1. Field
Exemplary embodiments relate to display technology, and more particularly, to a display apparatus configured to improve display quality.
2. Discussion
A conventional display apparatus may be configured to realize a full color image using a space (or spatial) division scheme, such as a spatial color dithering scheme. To this end, a display panel of the display device may include red, green, and blue color filters arranged, such as repeatedly arranged, to correspond to sub-pixels in a one-to-one correspondence. In this manner, a combination of the red, green, and blue color filters may serve as a minimum unit to realize a color, and the full color image may be realized by a transmittance difference between the sub-pixels of the display panel and the color combination of the red, green, and blue color filters. In other words, spatial diffusion may be achieved by presenting various available colors (via the color filters) at a plurality of differently disposed pixels (or sub-pixels) to approximate a non-native color (i.e., colors not in the “color space” of the display apparatus) over the region occupied by the plurality of differently disposed pixels/sub-pixels. As described above, an arrangement in which the red, green, and blue color filters are arranged in different spaces may be referred to as a space (or spatial) division scheme.
Alternatively (or additionally), a time (or temporal) division scheme (or a field sequential scheme), configured to realize the full color image with high transmittance and low manufacturing cost, may be used, such as a temporal color dithering technique. In a time division scheme, the color filters may be omitted from the display panel and a backlight unit disposed at a rear side of the display panel may include red, green, and blue light sources respectively configured to emit red, green, and blue color lights. It is noted that the backlight unit may include one or more light emitters disposed at one or more sides of the display panel. In addition, a frame may be divided into a plurality of fields (or sub-frames), such as three fields, separated in time from each other, and the red, green, and blue light sources may be lit in the three fields, respectively. In this manner, the display device may sequentially (or otherwise) display red, green, and blue color images. An observer may autonomically perceive the full color image obtained by combining the red, green, and blue color images by a physiological visual sensation. In other words, temporal diffusion may be achieved by rapidly alternating the color value of one or more pixels and/or sub-pixels between various native colors (i.e., colors associated with the red, green, and blue light sources) to approximate a non-native color in a region corresponding to the one or more pixels and/or sub-pixels.
Typically, utilization of a time division scheme to create the illusion of color depth may be associated with a “color breakup” effect, in which the red, green and blue color images are separately perceived by an observer in addition to (or instead of) the intended color mixture. This color breakup effect momentarily occurs when, for instance, a viewpoint is changed due to an observer blinking their eyes or the movement of the observer, which may occur regardless of high transmittance and/or low manufacturing cost.
Therefore, there is a need for an approach that provides efficient, cost effective techniques to improve display quality.
The above information disclosed in this Background section is only for enhancement of understanding of the background of the present disclosure, and, therefore, it may contain information that does not form the prior art that is already known in this country to a person of ordinary skill in the art.