US 11,706,872 B2
Flexible display module and manufacturing method thereof
Jiafan Shi, Beijing (CN); Liqiang Chen, Beijing (CN); Changbo Liu, Beijing (CN); Zuojia Wang, Beijing (CN); Qingsong Wang, Beijing (CN); Chao Zhou, Beijing (CN); Yongchun Jiang, Beijing (CN); Qian Yin, Beijing (CN); and Ziqi Song, Beijing (CN)
Assigned to Chengdu BOE Optoelectronics Technology Co., Ltd., Sichuan (CN); and BOE Technology Group Co., Ltd., Beijing (CN)
Filed by Chengdu BOE Optoelectronics Technology Co., Ltd., Sichuan (CN); and BOE Technology Group Co., Ltd., Beijing (CN)
Filed on Dec. 1, 2021, as Appl. No. 17/539,549.
Claims priority of application No. 202110126902.X (CN), filed on Jan. 29, 2021; and application No. 202110349782.X (CN), filed on Mar. 31, 2021.
Prior Publication US 2022/0248534 A1, Aug. 4, 2022
Int. Cl. H05K 1/02 (2006.01); H05K 1/14 (2006.01)
CPC H05K 1/147 (2013.01) [H05K 1/0203 (2013.01); H05K 1/028 (2013.01); H05K 1/0298 (2013.01); H05K 2201/10128 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A flexible display module, comprising a flexible display panel, and a driving chip and a circuit board arranged on the flexible display panel, wherein the flexible display panel comprises a display region and a bonding region arranged at a side of the display region opposite to a light-exiting side, and the driving chip and the circuit board are arranged at the bonding region;
the circuit board comprises a first flexible printed circuit, and a first printed circuit board provided with an electronic element and coupled to one end of the first flexible printed circuit, and the first flexible printed circuit comprises a bonded portion coupled to the bonding region of the flexible display panel; and
a first space is defined by the first flexible printed circuit, the first printed circuit board and the flexible display panel through bending the first flexible printed circuit, and the electronic element is received in the first space;
wherein the first printed circuit board is arranged at a side of the driving chip away from the flexible display panel, the electronic element is arranged at a surface of the first printed circuit board facing the flexible display panel, and the driving chip is received in the first space;
wherein the circuit board further comprises a second flexible printed circuit and a second printed circuit board, the second flexible printed circuit is coupled to one end of the first printed circuit board away from the first flexible printed circuit, a second space is defined by the second printed circuit board, the second flexible printed circuit and the first printed circuit board through bending the second flexible printed circuit, and an electronic element of the second printed circuit board is received in the second space;
wherein the second printed circuit board comprises an adhesive arranged on a surface where the electronic element is located, and the second printed circuit board is adhered to the first printed circuit board through the adhesive.