US 12,171,109 B2
Flexible display panel, flexible display device and method of forming flexible display panel
Myoungsoo Lee, Beijing (CN); Jaeho Lee, Beijing (CN); Qianshu Li, Beijing (CN); Zhen Sun, Beijing (CN); and Cheng Zeng, Beijing (CN)
Assigned to Beijing BOE Technology Development Co., Ltd., Beijing (CN); and Chengdu BOE Optoelectronics Technology Co., Ltd., Sichuan (CN)
Filed by Chengdu BOE Optoelectronics Technology Co., Ltd., Sichuan (CN); and BOE Technology Group Co., Ltd., Beijing (CN)
Filed on Nov. 10, 2021, as Appl. No. 17/523,517.
Claims priority of application No. 202011275712.6 (CN), filed on Nov. 16, 2020.
Prior Publication US 2022/0158109 A1, May 19, 2022
Int. Cl. H10K 50/115 (2023.01); H10K 50/86 (2023.01); H10K 59/12 (2023.01); H10K 59/122 (2023.01); H10K 59/35 (2023.01); H10K 59/38 (2023.01); H10K 71/00 (2023.01); H10K 77/10 (2023.01); H10K 102/00 (2023.01)
CPC H10K 50/115 (2023.02) [H10K 50/865 (2023.02); H10K 59/122 (2023.02); H10K 59/35 (2023.02); H10K 59/38 (2023.02); H10K 71/00 (2023.02); H10K 77/111 (2023.02); H10K 59/1201 (2023.02); H10K 2102/311 (2023.02)] 7 Claims
OG exemplary drawing
 
1. A flexible display panel, comprising:
a substrate;
thin film transistors arranged in an array on the substrate;
an electroluminescent device arranged on the thin film transistors and driven by the thin film transistors, comprising a pixel defining layer and an electroluminescent material defined by the pixel defining layer;
a thin film encapsulation layer on the electroluminescent device;
a quantum dot photoconversion layer on the thin film encapsulation layer, comprising an isolation portion and a quantum dot luminescent material surrounded by the isolation portion, wherein an orthographic projection of the isolation portion onto the substrate covers an orthographic projection of the pixel defining layer onto the substrate; and
a cover plate arranged on the quantum dot photoconversion layer;
wherein the electroluminescent material is a blue light material, and the electroluminescent device is configured to emit blue light;
wherein the quantum dot luminescent material is a first material configured to emit white light after being excited by the blue light emitted by the electroluminescent device;
the flexible display panel further comprises a color film layer on the quantum dot photoconversion layer and comprising a black matrix and a filter film defined by the black matrix, wherein
an orthographic projection of the black matrix onto the substrate covers the orthographic projection of the isolation portion on the substrate;
an orthographic projection of the filter film onto the substrate covers an orthographic projection of the quantum dot luminescent material onto the substrate, wherein the filter film comprises a red filter film, a green filter film and a blue filter film corresponding to three sub-pixels of each pixel of the flexible display panel.