US 12,446,429 B2
Display panel and display device
Jing Liu, Guangdong (CN)
Assigned to TCL CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD., Guangdong (CN)
Appl. No. 17/758,016
Filed by TCL CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD., Guangdong (CN)
PCT Filed May 31, 2022, PCT No. PCT/CN2022/096197
§ 371(c)(1), (2) Date Jun. 26, 2022,
PCT Pub. No. WO2023/221167, PCT Pub. Date Nov. 23, 2023.
Claims priority of application No. 202210544092.4 (CN), filed on May 18, 2022.
Prior Publication US 2024/0196687 A1, Jun. 13, 2024
Int. Cl. H10K 59/35 (2023.01); G02F 1/13357 (2006.01); H10K 59/38 (2023.01)
CPC H10K 59/353 (2023.02) [G02F 1/133615 (2013.01); H10K 59/38 (2023.02)] 18 Claims
OG exemplary drawing
 
1. A display panel, comprising:
a display panel main body comprising a display region;
a backlight module positioned on a backlight side of the display panel main body and opposite to the display region, wherein the backlight module comprises:
a base substrate; and
an organic light-emitting diode disposed on a side of the base substrate close to the display panel main body, wherein the organic light-emitting diode comprises a first electrode, a second electrode oppositely to the first electrode, at least one light-emitting functional layer positioned between the first electrode and the second electrode, wherein the light-emitting functional layer comprises a plurality of light-emitting units, and wherein the light-emitting unit comprises at least one millimeter-scale sub-pixel;
wherein the light-emitting functional layer comprises a light-emitting layer, and wherein a material of the light-emitting layer comprises one of a red light-emitting material, a green light-emitting material, and a blue light-emitting material;
wherein the light-emitting unit comprises two millimeter-scale sub-pixels, and wherein the two sub-pixels have a same color;
wherein the display panel further comprises a light conversion layer positioned between the display panel main body and the backlight module, and wherein an orthographic projection of the light conversion layer on the base substrate covers the backlight module; and
wherein the light conversion layer comprises a base layer and different types of fluorescent materials uniformly dispersed on the base layer, and wherein the fluorescent materials comprise at least two of a red fluorescent material, a green fluorescent material, and a blue fluorescent material.