US 12,253,772 B2
Display panel and display device
Chengzhi Luo, Wuhan (CN)
Assigned to Wuhan China Star Optoelectronics Technology Co., Ltd., Wuhan (CN)
Appl. No. 17/924,412
Filed by Wuhan China Star Optoelectronics Technology Co., Ltd., Wuhan (CN)
PCT Filed Nov. 3, 2022, PCT No. PCT/CN2022/129583
§ 371(c)(1), (2) Date Nov. 10, 2022,
PCT Pub. No. WO2024/040746, PCT Pub. Date Feb. 29, 2024.
Claims priority of application No. 202211037704.7 (CN), filed on Aug. 26, 2022.
Prior Publication US 2024/0219784 A1, Jul. 4, 2024
Int. Cl. G02F 1/1362 (2006.01); G02F 1/1333 (2006.01); G02F 1/1335 (2006.01)
CPC G02F 1/136209 (2013.01) [G02F 1/133302 (2021.01); G02F 1/133507 (2021.01)] 18 Claims
OG exemplary drawing
 
1. A display panel, comprising a non-opening region and a plurality of opening regions, wherein the non-opening region is located between adjacent opening regions, the display panel comprises a substrate, the substrate is located on a side of the display panel away from a light-exiting surface; wherein the substrate comprises:
a first base layer;
a second base layer located on the first base layer, wherein a first interface is formed between the second base layer and the first base layer, and a refractive index of the second base layer is greater than a refractive index of the first base layer; and
a third base layer located on the second base layer, wherein a second interface is formed between the third base layer and the second base layer, and a refractive index of the third base layer is less than the refractive index of the second base layer;
wherein at least one of the first interface or the second interface forms a first concave surface in the non-opening region, and a concave direction of the first concave surface is toward a side with a larger refractive index in two sides of the first concave surface; and
wherein at least other one of the first interface or the second interface forms a second concave surface in the plurality of opening regions, and a concave direction of the second concave surface is toward a side with a smaller refractive index in two sides of the second concave surface.