Granted Patent B2

US 12,408,529 · App. 17/312,158 · Granted Sep 2, 2025

Inventor: Changjian Song (Wuhan, CN)

Assignee: Wuhan China Star Optoelectronics Semiconductor Display Technology Co., Ltd.

H10K59/35H10K59/38H10K59/70H10K59/877H10K59/8792H10K2101/90H10K2102/351

Abstract

Claims (31)

1. An organic light-emitting diode (OLED) display panel, comprising:

a plurality of pixel units comprising a red subpixel, a green subpixel, and a blue subpixel;

a substrate;

an array driving layer disposed on the substrate;

a light-emitting device layer disposed on the array driving layer and comprising a first light-emitting device emitting blue light disposed in a region of the blue subpixel, a second light-emitting device emitting red light disposed in a region of the red subpixel, and a third light-emitting device disposed in a region of the green subpixel;

a color conversion layer disposed on the light-emitting device layer, corresponding to the region of the green subpixel, and configured to convert light emitted by the third light-emitting device into green light;

a first black matrix layer, wherein the first black matrix layer is disposed in gap regions between the red subpixel, the green subpixel, and the blue subpixel, and is arranged in a same layer as the color conversion layer;

a transparent leveling layer disposed in gaps of the first black matrix layer corresponding to the region of the blue subpixel and the region of the red subpixel, wherein the transparent leveling layer is formed to have a same height as that of the first black matrix layer for planarization; and

a color resist layer disposed on the first black matrix layer, the transparent leveling layer, and the color conversion layer, wherein the color resist layer comprises a green color resist corresponding to the region of the green subpixel, a blue color resist corresponding to the region of the blue subpixel, and a red color resist corresponding to the region of the red subpixel.

2. The OLED display panel according to claim 1 , wherein the third light-emitting device comprises a light-emitting diode (LED) device.

3. The OLED display panel according to claim 1 , wherein the third light-emitting device comprises a blue OLED device or a white OLED device.

4. The OLED display panel according to claim 3 , wherein the blue OLED device comprises an anode layer, a hole injection layer, a hole transport layer, a blue light-emitting layer, an electron transport layer, an electron injection layer, and a cathode layer sequentially stacked.

5. The OLED display panel according to claim 4 , wherein the blue light-emitting layer comprises at least two blue light-emitting sublayers, and two adjacent blue light-emitting sublayers comprise different host light-emitting materials.

6. The OLED display panel according to claim 4 , wherein the blue light-emitting layer comprises at least two kinds of blue host light-emitting materials.

7. The OLED display panel according to claim 1 , wherein the color conversion layer comprises a green fluorescent material or a green quantum dot material.

8. The OLED display panel according to claim 1 , wherein the color conversion layer is doped with scattering particles.

9. A display device, comprising an organic light-emitting diode (OLED) display panel;

wherein the OLED display panel comprises:

a plurality of pixel units comprising a red subpixel, a green subpixel, and a blue subpixel;

a substrate;

an array driving layer disposed on the substrate;

a light-emitting device layer disposed on the array driving layer and comprising a first light-emitting device emitting blue light disposed in a region of the blue subpixel, a second light-emitting device emitting red light disposed in a region of the red subpixel, and a third light-emitting device disposed in a region of the green subpixel;

a color conversion layer disposed on the light-emitting device layer, corresponding to the region of the green subpixel, and configured to convert light emitted by the third light-emitting device into green light;

a first black matrix layer, wherein the first black matrix layer is disposed in gap regions between the red subpixel, the green subpixel, and the blue subpixel, and is arranged in a same layer as the color conversion layer;

a transparent leveling layer disposed in gaps of the first black matrix layer corresponding to the region of the blue subpixel and the region of the red subpixel, wherein the transparent leveling layer is formed to have a same height as that of the first black matrix layer for planarization; and

a color resist layer disposed on the first black matrix layer, the transparent leveling layer, and the color conversion layer, wherein the color resist layer comprises a green color resist corresponding to the region of the green subpixel, a blue color resist corresponding to the region of the blue subpixel, and a red color resist corresponding to the region of the red subpixel.

10. The display device according to claim 9 , wherein the third light-emitting device comprises a light-emitting diode (LED) device.

11. The display device according to claim 10 , wherein the blue OLED device comprises an anode layer, a hole injection layer, a hole transport layer, a blue light-emitting layer, an electron transport layer, an electron injection layer, and a cathode layer sequentially stacked.

12. The display device according to claim 11 , wherein the blue light-emitting layer comprises at least two blue light-emitting sublayers, and two adjacent blue light-emitting sublayers comprise different host light-emitting materials.

13. The display device according to claim 11 , wherein the blue light-emitting layer comprises at least two kinds of blue host light-emitting materials.

14. The display device according to claim 9 , wherein the color conversion layer comprises a green fluorescent material or a green quantum dot material.

Assignments (1)

Priority Claims (1)

Continuity (1)

References Cited (39)