CROSS-REFERENCE TO RELATED APPLICATION

This application is a National Stage Application of PCT International Patent Application No. PCT/CN2017/115784 filed on Dec. 13, 2017, under 35 U.S.C. § 371, which claims priority to and the benefit of Chinese Patent Application No. 201711007601.5, filed on Oct. 25, 2017, and the disclosures of which are incorporated herein in their entirety by reference.

BACKGROUND

1. Field

The present disclosure relates to a display technology field, more particularly to a display device and a method of driving the same.

2. Description of the Related Art

Most large-sized LCD devices apply vertical alignment (VA) liquid crystal technology or In-Plane Switching (IPS) technology. When being viewed under a large view angle, brightness values of the pixels of the VA type LCD device may be quickly saturated along with the drive voltage, and it causes a serious color shift phenomenon on the LCD device under the large view angle, and the display quality of the LCD device is also affected seriously.

The display panel may represent various hue combinations, and the color represented by entire display panel depends on the hue combination of the display panel. For example, when the display panel having the hue combination of red color is viewed under a front view angle, red components of the pixels of the display panel is more obvious than blue components and green components of the pixels; however, when the display panel is viewed under the large view angle (such as the view angle higher than 60 degrees), performance of the red components of the pixels of the display panel is worse than that of the blue components and the green components of the pixels of the display panel. When a ratio of the red components of the pixels among the all color components of the pixels is smaller, the color shown by the display panel is deviated from the red color more. When a difference between the color tones of the display panel under the large view angle and the front view angle is higher, the color shift problem of the display panel is more serious.

Furthermore, the ratio of the red components of the low grayscale pixels among the all color components of low grayscale pixels is lower than that of high grayscale pixels, and it means that the color shift problem of the low grayscale pixels is more serious.

SUMMARY

In order to solve above-mentioned problems, the present disclosure provides a display device and a method of driving the same to increase a ratio of grayscale value of a main color tone component among all other components, so as solve the color shift problem of the display panel under large view angle. Furthermore, the technical solution of the present disclosure can solve the problem that the difference between the ratios of grayscale values of main color tone components of the low grayscale pixels under the front view angle and the large view angle is higher than that of the high grayscale pixels.

According to an embodiment, the present disclosure provides a method of driving a display device. The method includes steps of dividing an original display image into a first display image and a second display image, and wherein each of pixels of the original display image, the first display image and the second display image comprises components corresponding a color space, and the components comprise a first component, a second component and a third component; acquiring a first mean value, a second mean value and a third mean value corresponding to the original display image, and wherein the first mean value, the second mean value and the third mean value are a mean value of the first components corresponding to the original display image, a mean value of the second components corresponding to the original display image, and a mean value of the third components corresponding to the original display image, respectively, and the first mean value is higher than the second mean value, and higher than the third mean value; setting the mean value of the first components corresponding to the first display image, the mean value of the second components corresponding to the first display image, and the mean value of the third components corresponding to the first display image to be equal to the second mean value, and setting the mean value of the first components corresponding to the second display image and the mean value of the third components corresponding to the second display image to be equal to a third mean value, and setting the mean value of the second components corresponding to the second display image to be equal to a preset mean value; regulating a brightness value of a backlight circuit according to the mean value of the first components corresponding to the original display image, the mean value of the second components corresponding to the original display image, and the mean value of the third components corresponding to the original display image, the mean value of the first components corresponding to the first display image, the mean value of the second components corresponding to the first display image, and the mean value of the third components corresponding to the first display image, and the mean value of the first components corresponding to the second display image, the mean value of the second components corresponding to the second display image, and the mean value of the third components corresponding to the second display image; acquiring a drive component corresponding to the pixel of the second display image according to the brightness value of the backlight circuit before regulation, the brightness value of the backlight circuit after regulation, the component corresponding to the pixel of the original display image, and a drive component corresponding to the pixel of the first display image, and wherein the drive component corresponding to the pixel of the first display image is equal to the second largest component corresponding to the pixel of the original display image; and driving the pixel units of the display device for display, according to the drive components corresponding to the pixels of the first display image and the drive components corresponding to the pixels of the second display image.

Preferably, the preset mean value is equal to zero.

Preferably, after the step of acquiring the drive components corresponding to the pixels of the second display image, according to the brightness value of the backlight circuit before regulation, the brightness value of the backlight circuit after regulation, the component corresponding to the pixel of the original display image, and the drive component corresponding to the pixel of the first display image, the driving method further includes a step of determining a relationship between the acquired drive component corresponding to the pixel of the second display image and zero, and a relationship between the acquired drive component and the first component corresponding to the pixel of the original display image; wherein when the acquired drive component corresponding to the pixel of the second display image is lower than zero, the drive component corresponding to the pixel of the second display image is set to be equal to zero; wherein when the acquired drive component corresponding to the pixels of the second display image are higher than a maximum component corresponding to the pixel, the drive components corresponding to the pixel of the second display image is set to be equal to the maximum component corresponding to the pixel.

Preferably, the backlight circuit comprises a first backlight circuit, a second backlight circuits and a third backlight circuit, and the step of regulating the brightness value of the backlight circuit according to the mean value of the first components corresponding to the original display image, the mean value of the second components corresponding to the original display image, and the mean value of the third components corresponding to the original display image, the mean value of the first components corresponding to the first display image, the mean value of the second components corresponding to the first display image, and the mean value of the third components corresponding to the first display image, and the mean value of the first components corresponding to the second display image, the mean value of the second components corresponding to the second display image, and the mean value of the third components corresponding to the second display image, further comprises: regulating a brightness value of the first backlight circuit according to grayscale brightness values of the mean values of the first components corresponding to the original display image, the first display image and the second display image respectively; regulating a brightness value of the second backlight circuit according to grayscale brightness values of the mean values of the second components corresponding to the original display image, the first display image and the second display image respectively; and regulating a brightness value of the third backlight circuit according to grayscale brightness values of the mean values of the third components corresponding to the original display image, the first display image and the second display image, respectively.

Preferably, the backlight circuit comprise a first backlight circuit, a second backlight circuits and a third backlight circuit, and the step of acquiring the drive component corresponding to the pixel of the second display image according to the brightness value of the backlight circuit before regulation, brightness value of the backlight circuit after regulation, the component corresponding to the pixel of the original display image, and the drive component corresponding to the pixel of the first display image, further comprise: acquiring a drive component corresponding to the first component of the pixel of the second display image, according to the brightness value of the first backlight circuit before regulation, the brightness value of the first backlight circuit after regulation, and the first component corresponding to the pixel of the original display image, and the drive component corresponding to the pixel of the first display image; acquiring a drive component corresponding to the second component of the pixel of the second display image, according to the brightness value of the second backlight circuit before regulation, the brightness value of the second backlight circuits after regulation, and the second component corresponding to the pixel of the original display image, and the drive component corresponding to the pixel of the first display image; acquiring a drive component corresponding to the third component of the pixel of the second display image according to the brightness value of the third backlight circuit before regulation, the brightness value of the third backlight circuit after regulation, and the third component corresponding to the pixel of the original display image, and the drive component corresponding to the pixel of the first display image.

Preferably, the driving method further includes steps of dividing the pixels of the original display image into a plurality of areas, wherein each of the plurality of areas comprises pixels; dividing the frame original display image in one of the plurality of areas into a first display image and a second display image; acquiring a first mean value, a second mean value and a third mean value corresponding to the original display image in the area; setting a mean value of the first components corresponding to the first display image in the area, a mean value of the second components corresponding to the first display image in the area, and a mean value of the third components corresponding to the first display image in the area to be equal to the second mean value, and setting a mean value of the first components corresponding to the second display image in the area and a mean value of the third components corresponding to the second display image in the area to be equal to the third mean value, and setting a mean value of the second components corresponding to the second display image in the area to be equal to the preset mean value; regulating the brightness value of the backlight circuit corresponding to the area, according to the mean value of the first components corresponding to the original display image in the area, the mean value of the second components corresponding to the original display image in the area, and the mean value of the third components corresponding to the original display image in the area, the mean value of the first components corresponding to the first display image in the area, the mean value of the second components corresponding to the first display image in the area, and the mean value of the third components corresponding to the first display image in the area, and the mean value of the first components corresponding to the second display image in the area, the mean value of the second components corresponding to the second display image in the area, and the mean value of the third components corresponding to the second display image in the area; acquiring the drive component corresponding to the pixel of the second display image in the area, according to the brightness value of the backlight circuit corresponding to the area before regulation, the brightness value of the backlight circuit corresponding to the area after regulation, the component corresponding to the pixel of the original display image in the area, and the drive component corresponding to the pixel of the first display image in the area; and driving the pixel units corresponding to the area of the display device for display, according to the drive components corresponding to the pixels of the first display image in the area, the drive components corresponding to the pixels of the second display image in the area.

Preferably, the preset mean value is equal to zero.

Preferably, after acquiring the drive component corresponding to the pixel of the second display image in the area according to the brightness value of the backlight circuit corresponding to the area before regulation, the brightness value of the backlight circuit corresponding to the area after regulation, the component corresponding to the pixel of the original display image in the area, and the drive component corresponding to the pixel of the first display image in the area, the method further includes steps of determining a relationship between the acquired drive component corresponding to the pixel of the second display image in the area and zero, and a relationship between the acquired drive component and the first component corresponding to the pixel of the original display image in the area; setting the drive component corresponding to the pixel of the second display image in the area to be equal to zero when the acquired drive component corresponding to the pixel of the second display image in the area is lower than zero; and setting the drive component corresponding to the pixel of the second display image in the area to be equal to the maximum component corresponding to the pixel when the acquired drive component corresponding to the pixel of the second display image in the area is higher than the maximum component corresponding to the pixel.

Preferably, the backlight circuit corresponding to the area comprises a first backlight circuit, a second backlight circuit and a third backlight circuit, and the step of regulating the brightness value of the backlight circuit corresponding to the area according to the mean value of the first components corresponding to the original display image in the area, the mean value of the second components corresponding to the original display image in the area, and the mean value of the third components corresponding to the original display image in the area, the mean value of the first components corresponding to the first display image, the mean value of the second components corresponding to the first display image, and the mean value of the third components corresponding to the first display image, and the mean value of the first components corresponding to the second display image, the mean value of the second components corresponding to the second display image, and the mean value of the third components corresponding to the second display image, further comprises: regulating a brightness value of the first backlight circuit corresponding to the area according to the grayscale brightness values of the mean values of the first components corresponding to the original display image, the first display image and the second display image in the area respectively; regulating a brightness value of the second backlight circuit corresponding to the area according to the grayscale brightness values of the mean values of the second components corresponding to the original display image, the first display image and the second display image in the area respectively; regulating a brightness value of the third backlight circuit corresponding to the area according to the grayscale brightness values of the mean values of the third components corresponding to the original display image, the first display image and the second display image in the area respectively.

Preferably, the backlight circuit corresponding to the area comprises a first backlight circuit, a second backlight circuits and a third backlight circuit, and the step of acquiring the drive component corresponding to the pixel of the second display image in the area according to the brightness value of the backlight circuit corresponding to the area before regulation, the brightness value of the backlight circuit corresponding to the area after regulation, the components corresponding to the pixels of the original display image in the area, and the drive component corresponding to the pixel of the first display image in the area, further comprises: acquiring the drive component of the first component corresponding to the pixel of the second display image in the area, according to the brightness value of the first backlight circuit corresponding to the area before regulation, the brightness value of the second backlight circuit corresponding to the area after regulation, the first component corresponding to the pixel of the original display image in the area, and the drive component corresponding to the pixel of the first display image in the area; acquiring the drive component of the second component corresponding to the pixel of the second display image in the area, according to the brightness value of the second backlight circuits corresponding to the area before regulation, the brightness value of the second backlight circuits corresponding to the area after regulation, the second component corresponding to the pixel of the original display image in the area, and the drive component corresponding to the pixel of the first display image in the area; and acquiring the drive component of the third component corresponding to the pixel of the second display image in the area, according to the brightness value of the third backlight circuit corresponding to the area before regulation, the brightness value of the third backlight circuit corresponding to the area after regulation, the third component corresponding to the pixel of the original display image in the area, and the drive component corresponding to the pixel of the first display image in the area.

According to an embodiment, the present disclosure provides a display device comprising: an image dividing circuit configured to divide an original display image into a first display image and a second display image, wherein each of pixels of the original display image, the first display image and the second display image comprises components corresponding to a color space, and the components comprise a first component, a second components and a third component; a mean value acquisition circuit electrically connected to the image dividing circuit, and configured to acquire a first mean value, a second mean value and a third mean value corresponding to the original display image, and wherein the first mean value, the second mean value and the third mean value are a mean value of the first components corresponding to the original display image, a mean value of the second components corresponding to the original display image, and a mean value of the third components corresponding to the original display image, respectively, and the first mean value is higher than the second mean values, and higher than the third mean value; a component setting circuit electrically connected to the mean value acquisition circuit, and configured to set the mean value of the first components corresponding to the first display image, the mean value of the second components corresponding to the first display image, and the mean value of the third components corresponding to the first display image to be equal to a second mean value, and set the mean value of the first components corresponding to the second display image and the mean value of the third components corresponding to the second display image to be equal to the third mean value, and set the mean value of the second components corresponding to the second display image to be equal to the preset mean value; a backlight regulation circuit electrically connected to the component setting circuit, and configured to regulate a brightness value of a backlight circuit according to the mean value of the first components corresponding to the original display image, the mean value of the second components corresponding to the original display image, and the mean value of the third components corresponding to the original display image, the mean value of the first components corresponding to the first display image, the mean value of the second components corresponding to the first display image, and the mean value of the third components corresponding to the first display image, and the mean value of the first components corresponding to the second display image, the mean value of the second components corresponding to the second display image, and the mean value of the third components corresponding to the second display image; a drive component acquisition circuit electrically connected to the backlight regulation circuit, configured to acquire a drive component corresponding to the pixel of the second display image according to the brightness value of the backlight circuit before regulation, the brightness value of the backlight circuit after regulation, the component corresponding to the pixel of the original display image, and the drive component corresponding to the pixel of the first display image, and wherein the drive components corresponding to the pixel of the first display image is equal to the second largest component corresponding to the pixel of the original display image; and a driver circuit electrically connected to the drive component acquisition circuit, and configured to according to the drive components corresponding to the pixels of the first display image, and the drive components corresponding to the pixels of the second display image, driving the pixel unit of the display device for display.

Preferably, the preset mean value is equal to zero.

Preferably, the display device further includes a relationship determination circuit electrically connected to the drive component acquisition circuit, and configured to determine a relationship between the acquired drive component corresponding to the pixel of the second display image and zero, and a relationship between the acquired drive component and the first component corresponding to the pixel of the original display image; and a drive component setting circuit electrically connected to the relationship determination circuit, and configured to set the drive component corresponding to the pixel of the second display image to be equal to zero when the acquired drive component corresponding to the pixel of the second display image is lower than zero, and set the drive component corresponding to the pixel of the second display image to be equal to the maximum component corresponding to the pixel when the acquired drive component corresponding to the pixel of the second display image is higher than the maximum component corresponding to the pixel.

Preferably, the backlight circuit comprise a first backlight circuit, a second backlight circuits and a third backlight circuit, and the backlight regulation circuit is configured to regulate a brightness value of the first backlight circuit according to grayscale brightness values of the mean values of the first components corresponding to the original display image, the first display image and the second display image respectively; regulate a brightness value of the second backlight circuit according to grayscale brightness values of the mean values of the second components corresponding to the original display image, the first display image and the second display image respectively; and regulate a brightness value of the third backlight circuit according to grayscale brightness values of the mean values of the third components corresponding to the original display image, the first display image and the second display image, respectively.

Preferably, the backlight circuit comprises a first backlight circuit, a second backlight circuits and a third backlight circuit, and the drive component acquisition circuit is configured to acquire a drive component corresponding to the first component of the pixel of the second display image according to the brightness value of the first backlight circuit before regulation, the brightness value of the first backlight circuit after regulation, and the first component corresponding to the pixel of the original display image, and the drive component corresponding to the pixel of the first display image; acquire a drive component corresponding to the second components of the pixel of the second display image according to the brightness value of the second backlight circuits before regulation, the brightness value of the second backlight circuits after regulation, and the second components corresponding to the pixel of the original display image, and the drive component corresponding to the pixel of the first display image; acquire a drive component corresponding to the third component of the pixel of the second display image according to the brightness value of the third backlight circuit before regulation, the brightness value of the third backlight circuit after regulation, and the third component corresponding to the pixel of the original display image, and the drive component corresponding to the pixel of the first display image.

Preferably, the display device further includes an area dividing circuit configured to divide the pixels of the original display image into a plurality of areas, wherein each of the plurality of area comprises pixels; an image dividing circuit electrically connected to the area dividing circuit, and configured to divide the original display image in one of the plurality of area into the first display image and the second display image; a mean value acquisition circuit configured to acquire the first mean value, the second mean value and the third mean value corresponding to the original display image in the area; a component setting circuit electrically connected to the mean value acquisition circuit, and configured to set the mean value of the first components corresponding to the first display image in the area, the mean value of the second components corresponding to the first display image in the area, and the mean value of the third components corresponding to the first display image in the area to be equal to the second mean values, and set the mean value of the first components corresponding to the second display image in the area and the mean value of the third components corresponding to the second display image in the area to be equal to the third mean value, and set the mean value of the second components corresponding to the second display image to be equal to the preset mean value; a backlight regulation circuit electrically connected to the component setting circuit, and configured to regulate the brightness value of the backlight circuit corresponding to the area, according to the mean value of the first components corresponding to the original display image in the area, the mean value of the second components corresponding to the original display image in the area, and the mean value of the third components corresponding to the original display image in the area, the mean value of the first components corresponding to the first display image in the area, the mean value of the second components corresponding to the first display image in the area, and the mean value of the third components corresponding to the first display image in the area, and the mean value of the first components corresponding to the second display image in the area, the mean value of the second components corresponding to the second display image in the area, and the mean value of the third components corresponding to the second display image in the area; a drive component acquisition circuit, electrically connected to the backlight regulation circuit, and configured to acquire the drive component corresponding to the pixel of the second display image in the area according to the brightness value of the backlight circuit corresponding to the area before regulation, the brightness value of the backlight circuit corresponding to the area after regulation, the component corresponding to the pixel of the original display image in the area, and the drive component corresponding to the pixel of the first display image in the area; a driver circuit electrically connected to the drive component acquisition circuit, and configured to drive the pixel units corresponding to the area of the display device for display, according to the drive components corresponding to the pixels of the first display image in the area, the drive components corresponding to the pixels of the second display image in the area.

Preferably, the backlight circuit corresponding to the area comprises a first backlight circuit, a second backlight circuit and a third backlight circuit, and the backlight regulation circuit configured to regulate the brightness value of the first backlight circuit corresponding to the area according to grayscale brightness values of the mean values of the first components corresponding to the original display image, the first display image and the second display image in the area respectively; regulate a brightness value of the second backlight circuit corresponding to the area according to the grayscale brightness values of the mean values of the second components corresponding to the original display image, the first display image and the second display image in the area respectively; and regulate a brightness value of the third backlight circuit corresponding to the area according to grayscale brightness values of the mean values of the third components corresponding to the original display image, the first display image and the second display image in the area respectively.

The display device according to claim11, wherein the backlight circuit corresponding to the area comprises a first backlight circuit, a second backlight circuit and a third backlight circuit, and the drive component acquisition circuit configured to acquire drive component of the first component corresponding to the pixel of the second display image in the area according to the brightness value of the first backlight circuit corresponding to the area before regulation, the brightness value of the first backlight circuit corresponding to the area after regulation, the first component corresponding to the pixel of the original display image in the area, and the drive component corresponding to the pixel of the first display image in the area;

acquire a drive component of the second components corresponding to the pixel of the second display image in the area, according to the brightness value of the second backlight circuits corresponding to the area before regulation, the brightness value of the second backlight circuits corresponding to the area after regulation, the second components corresponding to the pixel of the original display image in the area, and the drive component corresponding to the pixel of the first display image in the area, and acquire a drive component of the third component corresponding to the pixel of the second display image in the area according to the brightness value of the third backlight circuit corresponding to the area before regulation, the brightness value of the third backlight circuit corresponding to the area after regulation, the third component corresponding to the pixel of the original display image in the area, and the drive component corresponding to the pixel of the first display image in the area.

According to an embodiment, the present disclosure provides a method of driving a display device comprising steps of dividing an original display image into a first display image and a second display image, wherein each of the pixels of the original display image, the first display image and the second display image comprises components corresponding to a color space, and the components comprise a first component, a second components and a third component; acquiring a first mean value, a second mean value and a third mean value corresponding to the original display image, wherein the first mean value, the second mean values and the third mean value are a mean value of the first components corresponding to the original display image, a mean value of the second components corresponding to the original display image, and a mean value of the third components corresponding to the original display image, respectively, wherein the first mean value is higher than the second mean value, and higher than the third mean value; setting the mean value of the first components corresponding to the first display image, the mean value of the second components corresponding to the first display image, and the mean value of the third components corresponding to the first display image to be equal to the second mean values, setting the mean value of the first components corresponding to the second display image and the mean value of the third components corresponding to the second display image to be equal to the third mean value, and setting the mean value of the second components corresponding to the second display image to be equal to the preset mean value; regulating a brightness value of the first backlight circuit according to grayscale brightness values of the mean values of the first components corresponding to the original display image, the first display image and the second display image respectively; regulating a brightness value of the second backlight circuit according to grayscale brightness values of the mean values of the second components corresponding to the original display image, the first display image and the second display image respectively; regulating a brightness value of the third backlight circuit according to grayscale brightness values of the mean values of the third components corresponding to the original display image, the first display image and the second display image, respectively;

acquiring a drive component corresponding to the first component of the pixel of the second display image according to the brightness value of the first backlight circuit before regulation, the brightness value of the first backlight circuit after regulation, and the first component corresponding to the pixel of the original display image, and the drive components corresponding to the pixels of the first display image; acquiring a drive component corresponding to the second component of the pixel of the second display image according to the brightness value of the second backlight circuits before regulation, the brightness value of the second backlight circuits after regulation, and the second component corresponding to the pixel of the original display image, and the drive components corresponding to the pixels of the first display image; acquiring a drive component corresponding to the third component of the pixel of the second display image according to the brightness value of the third backlight circuit before regulation, the brightness value of the third backlight circuit after regulation, and the third component corresponding to the pixel of the original display image, and the drive components corresponding to the pixels of the first display image; acquiring a drive component corresponding to the first component of the pixel of the second display image according to the brightness value of the first backlight circuit before regulation, the brightness value of the first backlight circuit after regulation, and the first component of a pixel of the original display image, and the drive component of the pixel of the first display image; acquiring a drive component corresponding to the second component of the pixel of the second display image according to the brightness value of the second backlight circuit before regulation, the brightness value of the second backlight circuits after regulation, and the second components of a pixel of the original display image, and the drive component of the pixel of the first display image; acquiring the drive component corresponding to the third component of the pixel of the second display image according to the brightness value of the third backlight circuit before regulation, the brightness value of the third backlight circuit after regulation, and the third component of a pixel of the original display image, and the drive component of the pixel of the first display image, wherein the first component the second component and the third component corresponding to the pixel of the first display image are equal to a second largest component corresponding to the pixel of the original display image; and driving the pixel units of the display device to display, according to the drive components of the first components, the second components and the third components of the pixels of the first display image, and the first components, the second components and the third components corresponding to the pixels of the second display image.

According to above content, the present disclosure provides a display device and a method of driving the same to increase the ratio of the grayscale value of the main color tone component of the pixel, so as to increase a ratio of grayscale value of the main color tone component among all other components, to make the color presented on the display panel closer to the main color tone, thereby solving the color shift problem of the display panel under large view angle. Furthermore, the problem that the difference between the ratios of grayscale values of main color tone components of the low grayscale pixels under the front view angle and the large view angle is higher than that of the high grayscale pixels can also be solved, and the color shift problem of the display panel under large view angle can also be solved.

