Display panel, display apparatus and manufacturing method for display panel

Patent metadata

Field	Value
Publication number	US-2026020439-A1
Application number	US-202418992818-A
Country	US
Kind code	A1
Filing date	May 29, 2024
Priority date	Jun 13, 2023
Publication date	Jan 15, 2026
Grant date	—

Abstract

A display panel, a display apparatus and a method for manufacturing the display panel, which is related to the technical field of display. Including a back plate, wherein a planarization layer is arranged on the back plate; and the planarization layer is provided with a pixel defining layer setting area, and the pixel defining layer setting area includes a lyophilic area and a lyophobic area, wherein the lyophilic area and the lyophobic area are criss-cross arranged; the planarization layer is provided with a groove at a position where the lyophilic area is located; the groove is provided with a lyophilic pixel defining layer; and the lyophobic area is provided with a lyophobic pixel defining layer.

First claim

1 . A display panel, comprising a back plate, wherein a planarization layer is arranged on the back plate; and
the planarization layer is provided with a pixel defining layer setting area, and the pixel defining layer setting area comprises a lyophilic area and a lyophobic area, wherein the lyophilic area and the lyophobic area are criss-cross arranged; the planarization layer is provided with a groove at a position where the lyophilic area is located; the groove is provided with a lyophilic pixel defining layer; and the lyophobic area is provided with a lyophobic pixel defining layer.

2 . The display panel according to claim 1 , wherein an orthographic projection of the groove on the back plate is not less than an orthographic projection of the lyophilic pixel defining layer on the back plate.

3 . The display panel according to claim 1 , wherein the lyophilic pixel defining layer is arranged higher than the planarization layer.

4 . The display panel according to claim 3 , wherein a height of the lyophilic pixel defining layer above the planarization layer is H 1 , wherein, 0.6 μm≥H 1 ≥0.3 μm.

5 . The display panel according to claim 1 , wherein the lyophobic pixel defining layer forms a channel for ink to circulate.

6 . The display panel according to claim 3 , wherein a thickness of the lyophilic pixel defining layer is H 2 , wherein, 3 μm≥H 2 ≥2 μm.

7 . The display panel according to claim 1 , wherein pixel electrodes are arranged between adjacent lyophilic areas and adjacent lyophobic areas.

8 . The display panel according to claim 1 , wherein a thickness of the lyophobic pixel defining layer is H 3 , wherein, 1.5 μm≥H 3 ≥1 μm.

9 . The display panel according to claim 6 , wherein a depth of the groove of the planarization layer is H 2 -H 1 .

10 . The display panel according to claim 1 , wherein the lyophobic pixel defining layer comprises a plurality of first parts arranged along a first direction and at least two second parts arranged along a second direction, and a through area is arranged between adjacent first parts, and the through area is configured to accommodate ink drops, wherein the first direction and the second direction are not parallel.

11 . The display panel according to claim 10 , wherein the lyophilic pixel defining layer is arranged in the through area.

12 . The display panel according to claim 11 , wherein the lyophilic pixel defining layer extends along the second direction.

13 . The display panel according to claim 11 , wherein a height of the lyophobic pixel defining layer is higher than that of the lyophilic pixel defining layer.

14 . The display panel according to claim 10 , wherein the first direction and the second direction are not perpendicular.

15 . The display panel according to claim 1 , wherein the back plane comprises a substrate and a driving circuit structure arranged on the substrate.

16 . A display apparatus comprising the display panel according to claim 1 .

17 . A manufacturing method of a display panel according to claim 1 , comprising steps of:
providing the back plane; opening the groove at the position of the lyophilic area on the planarization layer; and arranging the lyophilic pixel defining layer in the groove, and arranging the lyophobic pixel defining layer in the lyophobic area.

18 . The manufacturing method according to claim 17 , wherein the lyophilic pixel defining layer is arranged beyond an upper surface of the planarization layer.

19 . The manufacturing method according to claim 17 , wherein after a step of arranging the lyophilic pixel defining layer in the groove and arranging the lyophilic pixel defining layer beyond the upper surface of the planarization layer, and arranging the lyophobic pixel defining layer in the lyophobic area, the method further comprises:
arranging pixel electrodes between the adjacent lyophilic areas and the adjacent lyophobic areas.

20 . The manufacturing method according to claim 19 , wherein after a step of arranging pixel electrodes between the adjacent lyophilic areas and the adjacent lyophobic areas, the method further comprises:
arranging print ink and/or other parts of the display panel between the adjacent lyophilic areas and the adjacent lyophobic areas.

Assignees

• Hefei Boe Joint Tech Co Ltd
• Boe Technology Group Co Ltd
• Beijing Boe Technology Dev Co Ltd

Inventors

• Jia Wenbin

Classifications

• H10K2102/351

  Thickness · CPC title

• H10K59/1201

  Manufacture or treatment · CPC title

• H10K59/122 Primary

  Pixel-defining structures or layers, e.g. banks · CPC title

• Y02E10/549

  Organic PV cells · CPC title

• H10K71/135

  using ink-jet printing · CPC title