US 12,292,667 B2
Electronic paper, method for manufacturing the same, and display device thereof
Zhiwei Zhou, Beijing (CN); Xin Fang, Beijing (CN); Wenchao Wang, Beijing (CN); Pei Hu, Beijing (CN); and Jinliang Wang, Beijing (CN)
Assigned to FUZHOU BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., Fujian (CN); and BOE TECHNOLOGY GROUP CO., LTD., Beijing (CN)
Appl. No. 17/630,365
Filed by Fuzhou BOE Optoelectronics Technology Co., Ltd., Fujian (CN); and BOE Technology Group Co., Ltd., Beijing (CN)
PCT Filed Mar. 18, 2021, PCT No. PCT/CN2021/081570
§ 371(c)(1), (2) Date Jan. 26, 2022,
PCT Pub. No. WO2022/193239, PCT Pub. Date Sep. 22, 2022.
Prior Publication US 2023/0375892 A1, Nov. 23, 2023
Int. Cl. G02F 1/167 (2019.01); G02F 1/1362 (2006.01); G02F 1/1368 (2006.01); G02F 1/16766 (2019.01); G02F 1/1685 (2019.01); G02F 1/16756 (2019.01)
CPC G02F 1/167 (2013.01) [G02F 1/13624 (2013.01); G02F 1/136295 (2021.01); G02F 1/1368 (2013.01); G02F 1/16766 (2019.01); G02F 1/1685 (2019.01); G02F 1/16756 (2019.01)] 17 Claims
OG exemplary drawing
 
1. An electronic paper, comprising: an array substrate, a cell substrate, and electrophoresis solution provided between the array substrate and the cell substrate, and the electrophoresis solution contains black charged particles and white charged particles;
the array substrate includes a plurality of sub-pixel regions defined by intersections of a plurality of grid lines and a plurality of data lines, each of the sub-pixel region comprises: an auxiliary electrode provided on one side of a first substrate, a first switch unit connected to the auxiliary electrode, a pixel electrode, and a second switch unit connected to the pixel electrode;
the cell substrate is provided with a first common electrode, electric field is formed between the first common electrode and the pixel electrode, controlling the black charged particles and the white charged particles in the electrophoresis solution to move to achieve displaying different pictures;
wherein, a control end and an input end of the first switch unit are respectively connected to the grid line, and an output end of the first switch unit is connected to the auxiliary electrode; and
the auxiliary electrode is located on one side of the first switch unit away from the first substrate, and an orthographic projection of the auxiliary electrode on the first substrate at least covers the orthographic projection of the channel region of the second switch unit on the first substrate;
wherein the second switch unit comprises a fourth transistor and a fifth transistor connected in series;
a grid electrode of the fourth transistor is connected with a grid electrode of the fifth transistor, and the grid electrode of the fourth transistor and the grid electrode of the fifth transistor are the control end of the second switch unit; and
a first electrode of the fourth transistor is the input end of the second switch unit, a second electrode of the fourth transistor is connected with the first electrode of the fifth transistor, the second electrode of the fifth transistor is the output end of the second switch unit;
wherein the orthographic projection of the auxiliary electrode on the first substrate further covers the orthographic projection of the first electrode of the fourth transistor, the orthographic projection of the second electrode of the fourth transistor, the orthographic projection of the first electrode of the fifth transistor and the orthographic projection of part of the second electrode of the fifth transistor on the first substrate.