US 12,033,593 B2
Electrophoretic display device and driving method of electrophoretic display device
Ian French, Hsinchu (TW); Po-Yuan Lo, Hsinchu (TW); and Xian-Teng Chung, Hsinchu (TW)
Assigned to E Ink Holdings Inc., Hsinchu (TW)
Filed by E Ink Holdings Inc., Hsinchu (TW)
Filed on Jan. 21, 2022, as Appl. No. 17/581,837.
Claims priority of application No. 110111461 (TW), filed on Mar. 30, 2021.
Prior Publication US 2022/0319445 A1, Oct. 6, 2022
Int. Cl. G09G 3/34 (2006.01); G02F 1/167 (2019.01)
CPC G09G 3/344 (2013.01) [G02F 1/167 (2013.01); G09G 3/3413 (2013.01); G09G 2300/0452 (2013.01)] 3 Claims
OG exemplary drawing
 
1. An electrophoretic display device, comprising:
an electrophoretic display panel; and
a display driving module, coupled to the electrophoretic display panel and used for driving the electrophoretic display panel, wherein
the display driving module generates a plurality of first grayscale images according to a plurality color pixel values of a plurality of color pixels corresponding to a plurality of colors of a color image,
the display driving module captures a plurality of grayscale values of a plurality of locations of a plurality of first sub-pixels corresponding to a plurality of first grayscale images according to a plurality of locations of a plurality of mask sub-pixels corresponding to the colors in a mask image to generate a plurality of second grayscale images,
the display driving module synthesizes the second grayscale images to generate a synthesized image, and
the display driving module drives the electrophoretic display panel according to the synthesized image; and
a color filter array, disposed on the electrophoretic display panel and comprising a plurality of filter patterns, and the plurality of filter patterns form a plurality of pattern units, wherein the filter patterns of the pattern units of the color filter array and the mask sub-pixels of a plurality of mask pixels of the mask image have a same arrangement, so that the mask pixels of the mask image respectively correspond to the pattern units of the color filter array, and the mask sub-pixels of the mask image respectively correspond to the filter patterns of the color filter array, wherein the mask sub-pixels have red, blue, and green colors,
wherein the display driving module uses the color pixel values of the color pixels corresponding to each of the colors of the color image as a plurality of first grayscale values of the first sub-pixels of the respective first grayscale images corresponding to the different colors,
wherein the display driving module captures the first grayscale values of different portions of the first grayscale images corresponding to the different colors according to the locations of the mask sub-pixels corresponding to the respective colors in the mask image to respectively generate the second grayscale images corresponding to the different colors, wherein
a plurality of respective grayscale values of the locations of the mask sub pixels with non-corresponding colors in the second grayscale images are 0.