US 12,144,117 B2
Flexible circuit board and display device
Fan Li, Beijing (CN); Wenxiao Niu, Beijing (CN); Ji Wang, Beijing (CN); Yunhan Xiao, Beijing (CN); and Hengzhen Liang, Beijing (CN)
Assigned to Chengdu BOE Optoelectronics Technology Co., Ltd., Chengdu (CN); and BOE Technology Group Co., Ltd., Beijing (CN)
Appl. No. 17/603,395
Filed by Chengdu BOE Optoelectronics Technology Co., Ltd., Chengdu (CN); and BOE Technology Group Co., Ltd., Beijing (CN)
PCT Filed Dec. 25, 2020, PCT No. PCT/CN2020/139459
§ 371(c)(1), (2) Date Oct. 13, 2021,
PCT Pub. No. WO2022/134013, PCT Pub. Date Jun. 30, 2022.
Prior Publication US 2022/0240386 A1, Jul. 28, 2022
Int. Cl. H05K 1/18 (2006.01); H05K 1/11 (2006.01)
CPC H05K 1/189 (2013.01) [H05K 1/118 (2013.01); H05K 2201/10136 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A display device, wherein the display device comprises:
a display panel;
a flexible circuit board; and
a battery,
wherein the flexible circuit board comprises:
a body area comprising at least one driving device and a plurality of wirings;
a bonding area combined with a first side of the body area, and the bonding area comprises a plurality of bonding pins; and
an extension area combined with a second side of the body area, and the first side and the second side are two opposite sides of the body area,
wherein the body area comprises a first sub-body area and a second sub-body area, and the second sub-body area is located on a side of the first sub-body area close to the extension area; the plurality of wirings at least comprise a first wiring, a second wiring and a third wiring, each of the first wiring, the second wiring and the third wiring extends in the first sub-body area, and the first wiring and the second wiring extend in the second sub-body area;
the first sub-body area comprises a multi-layer board structure, the second sub-body area comprises a single-layer board structure or a double-layer board structure, and a thickness of the second sub-body area is smaller than a thickness of the first sub-body area; and
the at least one driving device is arranged in the first sub-body area;
wherein the bonding area of the flexible circuit board is connected to the display panel, and the flexible circuit board is located on a non-display side of the display panel; and
the battery is located on a side of the flexible circuit board away from the display panel.