US 12,468,202 B2
Reflective display panel
Wei-Chih Hsu, Taichung (TW); Ding-Wei Liu, Kaohsiung (TW); Yen-Chung Chen, Taichung (TW); Cheng-Yen Yeh, Taichung (TW); and Chen-Hao Su, Taichung (TW)
Assigned to HannStar Display Corporation, Taipei (TW)
Filed by HannStar Display Corporation, Taipei (TW)
Filed on Dec. 4, 2023, as Appl. No. 18/527,393.
Claims priority of application No. 202310058414.9 (CN), filed on Jan. 17, 2023.
Prior Publication US 2024/0241414 A1, Jul. 18, 2024
Int. Cl. G02F 1/1368 (2006.01); G02F 1/1362 (2006.01)
CPC G02F 1/1368 (2013.01) [G02F 1/136222 (2021.01)] 6 Claims
OG exemplary drawing
 
1. A reflective display panel having a plurality of sub-pixel regions, wherein the reflective display panel comprises:
a first substrate;
a second substrate;
a thin film transistor disposed on the first substrate;
a first reflective layer and a second reflective layer disposed on the first substrate;
a color resist layer disposed on the second substrate, wherein the sub-pixel regions comprise a color sub-pixel region and a white sub-pixel region, the color sub-pixel region has the color resist layer, the white sub-pixel region does not have the color resist layer, and the color sub-pixel region is adjacent to the white sub-pixel region, and the entire planar area of the white sub-pixel region is greater than the entire planar area of the color sub-pixel region, wherein the first reflective layer is located in the color sub-pixel region, and the second reflective layer is located in the white sub-pixel region; and
a buffer layer disposed on the first substrate or the second substrate, wherein the buffer layer is located in the white sub-pixel region, there is a first cell gap between the first substrate and the second substrate in the white sub-pixel region, there is a second cell gap between the first substrate and the second substrate in the color sub-pixel region, and the first cell gap is less than the second cell gap, wherein a difference between the first cell gap and the second cell gap is greater than 0 micron and less than 0.9 microns, wherein the first cell gap is greater than or equal to 1.9 microns, and is less than or equal to 2.8 microns, wherein the second cell gap is greater than or equal to 2.4 microns, and is less than or equal to 2.8 microns.