US 12,333,134 B2
Array substrate with NFC coil, handwriting tablet including the same, and method for driving handwriting tablet
Xiaojuan Wu, Beijing (CN); Jian Wang, Beijing (CN); Yu Zhao, Beijing (CN); Yang Ge, Beijing (CN); Xian Wang, Beijing (CN); Jiaxing Wang, Beijing (CN); Chunnan Feng, Beijing (CN); Jinshuai Duan, Beijing (CN); Xiuliang Wang, Beijing (CN); Biqi Li, Beijing (CN); and Feng Qu, Beijing (CN)
Assigned to Beijing BOE Optoelectronics Technology Co., Ltd., Beijing (CN); and BOE Technology Group Cp., Ltd., Beijing (CN)
Appl. No. 17/916,019
Filed by Beijing BOE Optoelectronics Technology Co., Ltd., Beijing (CN); and BOE Technology Group Co., Ltd., Beijing (CN)
PCT Filed Sep. 28, 2021, PCT No. PCT/CN2021/121359
§ 371(c)(1), (2) Date Sep. 29, 2022,
PCT Pub. No. WO2023/050067, PCT Pub. Date Apr. 6, 2023.
Prior Publication US 2024/0231603 A1, Jul. 11, 2024
Int. Cl. G06F 3/046 (2006.01); G02F 1/1333 (2006.01); G06F 3/041 (2006.01); G06F 3/04883 (2022.01); G02F 1/1343 (2006.01); G09G 3/36 (2006.01)
CPC G06F 3/04883 (2013.01) [G02F 1/13338 (2013.01); G06F 3/0412 (2013.01); G06F 3/046 (2013.01); G02F 1/133331 (2021.01); G02F 1/1343 (2013.01); G02F 1/134309 (2013.01); G06F 3/041 (2013.01); G09G 3/36 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An array substrate comprising a handwriting area and a peripheral area surrounding the handwriting area, wherein the handwriting area comprises at least one handwriting sub-area, and an NFC coil and an erasure unit are provided in the at least one handwriting sub-area; and
wherein the array substrate further comprises a base substrate, a bottom color layer, and a driving layer arranged in stack, the driving layer comprises a pixel electrode arranged in an array, the NFC coil comprises a first NFC coil, and the first NFC coil is arranged in the driving layer;
wherein the first NFC coil comprises a plurality of sub-electrodes, and orthographic projections of the plurality of sub-electrodes on the base substrate are all located between orthographic projections of the pixel electrodes on the base substrate;
wherein the array substrate further comprises a sensing layer, the NFC coil comprises a second NFC coil, and the second NFC coil is located in the sensing layer; and
wherein an orthographic projection of the wiring of the second NFC coil on the base substrate comprises an overlapping position, the overlapping position of the orthographic projection of the wiring of the second NFC coil is located within an orthographic projection of the pixel electrode on the base substrate, and the overlapping position of the orthographic projection of the wiring of the second NFC coil is bridged through the driving layer.