US 12,268,050 B2
Display panel
Zesheng Chen, Wuhan (CN); Yong Zhao, Wuhan (CN); and Wenxu Xianyu, Wuhan (CN)
Appl. No. 17/052,825
Filed by WUHAN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY CO., LTD., Wuhan (CN)
PCT Filed Jul. 20, 2020, PCT No. PCT/CN2020/103041
§ 371(c)(1), (2) Date Nov. 4, 2020,
PCT Pub. No. WO2021/258456, PCT Pub. Date Dec. 30, 2021.
Claims priority of application No. 202010574123.1 (CN), filed on Jun. 22, 2020.
Prior Publication US 2023/0099301 A1, Mar. 30, 2023
Int. Cl. H10K 50/86 (2023.01); H10K 59/38 (2023.01); H10K 59/12 (2023.01)
CPC H10K 50/865 (2023.02) [H10K 59/38 (2023.02); H10K 59/12 (2023.02)] 18 Claims
OG exemplary drawing
 
1. A display panel, comprising:
a substrate;
a thin film transistor array layer, disposed on the substrate;
a light-emitting device layer, disposed on the thin film transistor array layer and comprises light-emitting devices arranged at intervals, wherein each of the light-emitting devices comprises an anode, a light-emitting layer, and a cathode disposed in a stack;
a light-absorbing medium layer, disposed on a side of the cathode adjacent to and/or away from the light-emitting layer and comprising a first sublayer, a second sublayer, a third sublayer, and a fourth sublayer disposed in a stack;
a light shielding layer, disposed on the light-emitting device layer and provided with openings corresponding to positions of light-emitting areas of the light-emitting devices;
an organic protective layer disposed on the light shielding layer; and
a plurality of diffuse reflection structures, disposed on a light emitting side of the light-emitting devices and at least corresponding to the openings of the light shielding layer to perform a scattering treatment on ambient light,
wherein the plurality of diffuse reflection structures are distributed uniformly directly on a surface of the cathode;
the openings of the light shielding layer are filled with the organic protective layer, and the organic protective layer is a transparent material; and
the first sublayer is configured to absorb stray light with wavelengths ranging from 300 nm to a wavelength of blue light, the second sublayer is configured to absorb stray light with wavelengths ranging from a wavelength of green light to the wavelength of blue light, the third sublayer is configured to absorb stray light with wavelengths ranging from a wavelength of red light to the wavelength of green light, and the fourth sublayer is configured to absorb stray light with wavelengths ranging from 800 nm to the wavelength of red light.