CROSS REFERENCE TO RELATED APPLICATIONS

This Non-provisional application claims priority under 35 U.S.C. § 119(a) on Patent Application No(s). 201710329662.7, entitled “DISPLAY DEVICE AND DRIVING METHOD OF DISPLAY PANEL”, filed in People's Republic of China on May 10, 2017, the entire contents of which are hereby incorporated by reference.

BACKGROUND

Technical Field

This disclosure relates to a technical field of a display, and more particularly to a driving method of a display panel, and a display device.

Related Art

Most of current large size LCD display panels adopt the negative type vertical alignment (VA) liquid crystal or in-plane switching (IPS) liquid crystal technology. Compared with the IPS liquid crystal technology, the VA type liquid crystal technology has the advantages of the higher production efficiency and the low manufacturing cost, but the optical property has the more obvious defects. More particularly, the commercial application of the large-size panel needs the presentation of the larger viewing angle, and the VA type liquid crystal is driven to have the brightness fast saturated with the voltage at the large viewing angle, thereby seriously deteriorating the picture quality contrast at the viewing angle and the color shift as compared with the front-view picture quality.

SUMMARY

In view of this, it is necessary to provide a driving method of a display panel and a display device capable of solving the viewing-angle color shift.

The present disclosure provides a driving method of a display panel, comprising: dividing pixels on the display panel into a plurality of pairs of pixel sets; wherein each of the pairs of the pixel sets comprise a first pixel set and a second pixel set neighboring each other, and the first pixel set and the second pixel set respectively comprise different color sub-pixels; acquiring a first voltage signal and a second voltage signal corresponding to each of the sub-pixels according to a frame input signal corresponding to a frame and a predetermined rule; wherein the first voltage signal is unequal to the second voltage signal, and the first voltage signal and the second voltage signal alternately drive the sub-pixel to reach a positive viewing-angle mixed brightness equivalent to a positive viewing-angle brightness of the sub-pixel driven by the frame input signal; and the frame comprises a first frame and a second frame at neighboring timings; adopting the first voltage signals for the color sub-pixels corresponding to the first pixel set to respectively drive the color sub-pixels of the first pixel set, and adopting the second voltage signals for the color sub-pixels corresponding to the first pixel set to respectively drive the color sub-pixels of the second pixel set upon displaying the first frame; and adopting the second voltage signals for the color sub-pixels corresponding to the second pixel set to respectively drive the color sub-pixels of the first pixel set, and adopting the first voltage signals for the color sub-pixels corresponding to the second pixel set to respectively drive the color sub-pixels of the second pixel set upon displaying the second frame.

The present disclosure provides a display device comprising a display panel and a drive chip. The pixels on the display panel are divided into a plurality of pairs of pixel sets. Each of the pairs of the pixel sets comprise a first pixel set and a second pixel set neighboring each other, and the first pixel set and the second pixel set respectively comprise different color sub-pixels. The drive chip acquires a first voltage signal and a second voltage signal corresponding to each of the sub-pixels according to a frame input signal corresponding to a frame and a predetermined rule. The frame comprises a first frame and a second frame at neighboring timings. Upon displaying the first frame, the drive chip further adopts the first voltage signals for the color sub-pixels corresponding to the first pixel set to respectively drive the color sub-pixels of the first pixel set, and adopts the second voltage signals for the color sub-pixels corresponding to the first pixel set to respectively drive the color sub-pixels of the second pixel set. Upon displaying the second frame, the drive chip further adopts the second voltage signals for the color sub-pixels corresponding to the second pixel set to respectively drive the color sub-pixels of the first pixel set, and adopts the first voltage signals for the color sub-pixels corresponding to the second pixel set to respectively drive the color sub-pixels of the second pixel set. The first voltage signal is unequal to the second voltage signal, and the first voltage signal and the second voltage signal alternately drive the sub-pixel to reach a positive viewing-angle mixed brightness equivalent to a positive viewing-angle brightness of the sub-pixel driven by the frame input signal.

The present disclosure also provides a driving method of a display panel, comprising: dividing pixels on the display panel into a plurality of pairs of pixel sets; wherein each of the pairs of the pixel sets comprise a first pixel set and a second pixel set neighboring each other, and the first pixel set and the second pixel set respectively comprise different color sub-pixels; wherein the first pixel set and the second pixel set are disposed in the same row and neighbor upon each other or disposed in the same column and neighbor upon each other; wherein the first pixel set in one pair of the pixel sets of the neighboring two pairs of the pixel sets and the second pixel set in the other pair of the pixel sets of the neighboring two pairs of the pixel sets neighbor upon each other; acquiring a first voltage signal and a second voltage signal corresponding to each of the sub-pixels according to a frame input signal corresponding to a frame and a predetermined rule; wherein the first voltage signal is unequal to the second voltage signal, and the first voltage signal and the second voltage signal alternately drive the sub-pixel to reach a positive viewing-angle mixed brightness equivalent to a positive viewing-angle brightness of the sub-pixel driven by the frame input signal; and the frame comprises a first frame and a second frame at neighboring timings; adopting the first voltage signals for the color sub-pixels corresponding to the first pixel set to respectively drive the color sub-pixels of the first pixel set, and adopting the second voltage signals for the color sub-pixels corresponding to the first pixel set to respectively drive the color sub-pixels of the second pixel set upon displaying the first frame; and adopting the second voltage signals for the color sub-pixels corresponding to the second pixel set to respectively drive the color sub-pixels of the first pixel set, and adopting the first voltage signals for the color sub-pixels corresponding to the second pixel set to respectively drive the color sub-pixels of the second pixel set upon displaying the second frame.

In the above-mentioned driving method and display device, the color sub-pixels of the first pixel set and the second pixel set of the first frame are respectively driven by one high voltage signal and one low voltage signal, and the color sub-pixels of the first pixel set and the second pixel set of the second frame are respectively driven by one low voltage signal and one high voltage signal. The low voltage signal improves the drawback of the color difference caused by the refractivity mismatch of the large viewing angle of the display panel, and the high voltage signal keeps the frame resolution. Although each of the first frame and the second frame sacrifices one half of the original frame signal, the equivalent effect of the resolution seen in the space is not sacrificed due to the ordered presentation of the original frame signals on the timings at neighboring positions. This disclosure is particularly applicable to the TN, OCB and the VA type liquid crystal display panel, wherein the processes of this method are simple, and the production yield is high.

