US 11,871,647 B2
Flexible substrate, manufacturing method for flexible substrate and display device
Wei Wang, Beijing (CN); Zhifeng Zhan, Beijing (CN); and Jiafan Shi, 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 May 20, 2022, as Appl. No. 17/749,918.
Application 17/749,918 is a continuation of application No. 16/337,731, granted, now 11,367,842, previously published as PCT/CN2018/112388, filed on Oct. 29, 2018.
Claims priority of application No. 201810162327.7 (CN), filed on Feb. 27, 2018.
Prior Publication US 2022/0278289 A1, Sep. 1, 2022
Int. Cl. H10K 77/10 (2023.01); H10K 50/842 (2023.01); H10K 71/20 (2023.01); H10K 102/00 (2023.01)
CPC H10K 77/111 (2023.02) [H10K 50/8426 (2023.02); H10K 71/231 (2023.02); H10K 2102/351 (2023.02)] 15 Claims
OG exemplary drawing
 
1. A display device comprising a display substrate obtained by bending a flexible substrate along a to-be-bent region of the flexible substrate, wherein the flexible substrate is divided into a display region, a binding region on a side of the display region, the to-be-bent region between the display region and the binding region, two transition regions between the to-be-bent region and the display region and between the to-be-bent region and the binding region respectively;
the transition regions comprise a plurality of transition sub-regions arranged in a first direction, the first direction is a direction from the display region to the binding region;
the flexible substrate comprises a flexible base and a back film disposed on the flexible base, a portion of the back film is located in the transition regions;
in any one of the transition regions, the amount of distribution per unit area of the back film in each of the transition sub-regions gradually decreases in a direction gradually approaching the to-be-bent region,
wherein a portion of the back film located outside the transition regions is disposed in the display region and the binding region, a thickness of the back film in both the display region and the binding region is greater than or equal to the thickness of the back film in the transition regions,
wherein both the two transition regions and the to-be-bent region have a bent structure after bending the flexible substrate.