US-20260130059-A1 - DISPLAY PANEL AND ELECTRONIC DEVICE

Abstract

The present application provides a display panel and an electronic device. The display panel includes a substrate and a pixel defining layer. The pixel defining layer is disposed on one side of the substrate and has pixel openings. Sidewalls of the pixel openings are continuously arranged, and in a direction away from the substrate, the sidewalls of the pixel openings successively has a first taper angle and a second taper angle, the first taper angle and the second taper angle are angles formed between a tangent line at a point on the sidewalls of the pixel openings and a plane where the substrate is located, and the second taper angle is greater than or equal to the first taper angle.

Inventors

• Xingfeng Ren
• Yuan Yao
• Lin Huang
• Jui-Yang Tsai
• Chung-Chun Lee
• PENG QIN

Assignees

• VISIONOX TECHNOLOGY INC.
• Hefei Visionox Technology Co., Ltd.

Dates

Publication Date

20260507

Application Date

20251103

Priority Date

20241106

Claims (20)

1. 1 . A display panel, wherein the display panel comprises: a substrate; a pixel defining layer, disposed on one side of the substrate and provided with a plurality of pixel openings, wherein sidewalls of the pixel openings are arranged continuously, and in a direction away from the substrate, the sidewalls of the pixel openings sequentially have a first taper angle and a second taper angle, wherein the first taper angle and the second taper angle are angles formed between a tangent line at a point on the sidewall of the pixel opening and a plane where the substrate is located, and the second taper angle is greater than or equal to the first taper angle; and an isolation structure, disposed on a side of the pixel defining layer away from the substrate, wherein the isolation structure is enclosed to form isolation openings, and the isolation openings communicate with the pixel openings.
2. 2 . The display panel according to claim 1 , wherein the pixel defining layer comprises a first pixel defining sublayer and a second pixel defining sublayer arranged in a direction away from the substrate, wherein the first pixel defining sublayer is provided with first pixel sub-openings, the second pixel defining sublayer is provided with second pixel sub-openings, the sidewalls of the first pixel sub-opening have first sub-taper angles, the sidewalls of the second pixel sub-opening have second sub-taper angles, the second sub-taper angles on the second pixel defining sublayer are greater than or equal to the first sub-taper angles on the first pixel defining sublayer, and in a thickness direction of the substrate, regions of the second pixel sub-openings cover regions of the first pixel sub-openings.
3. 3 . The display panel according to claim 2 , wherein the pixel defining layer further comprises a third pixel defining sublayer disposed on the side of the second pixel defining sublayer away from the substrate, wherein the third pixel defining sublayer is provided with third pixel sub-openings, sidewalls of the third pixel sub-openings have third sub-taper angles, the third sub-taper angles on the third pixel defining sublayer are greater than or equal to the second sub-taper angles on the second pixel defining sublayer, and in the thickness direction of the substrate regions of the third pixel sub-openings cover regions of the second pixel sub-openings.
4. 4 . The display panel according to claim 3 , wherein etching selectivity ratios of materials of the first pixel defining sublayer, the second pixel defining sublayer and the third pixel defining sublayer decrease in sequence.
5. 5 . The display panel according to claim 4 , wherein densities of the first pixel defining sublayer, the second pixel defining sublayer and the third pixel defining sublayer decrease in sequence.
6. 6 . The display panel according to claim 4 , wherein a material of the first pixel defining sublayer comprises silicon nitride.
7. 7 . The display panel according to claim 4 , wherein in a direction from the first pixel defining sublayer to the third pixel defining sublayer, at least two layers of the pixel defining layer comprise an oxygen element, and the content of the oxygen element increases gradually; or, in the direction from the first pixel defining sublayer to the third pixel defining sublayer, the content of a nitrogen element in the pixel defining layer decreases gradually.
8. 8 . The display panel according to claim 4 , wherein in the thickness direction of the substrate, a thickness of the pixel defining layer is greater than or equal to 2000 Å and less than or equal to 6000 Å.
9. 9 . The display panel according to claim 1 , wherein the display panel further comprises: a light-emitting unit, at least partially disposed in the isolation openings; an encapsulation unit, disposed on a side of the light-emitting unit away from the substrate, wherein at least part of the encapsulation unit extends from a side surface of the isolation structure facing the isolation openings to a side of the isolation structure away from the substrate.
10. 10 . The display panel according to claim 9 , wherein adjacent encapsulation units are spaced apart or overlapped with each other on the side of the isolation structure away from the substrate.
11. 11 . The display panel according to claim 9 , wherein there is a gap between the encapsulation unit disposed on the side of the isolation structure away from the substrate and the side of the isolation structure away from the substrate.
12. 12 . The display panel according to claim 9 , wherein the display panel further comprises a second encapsulation layer disposed on a side of the encapsulation unit away from the substrate and a third encapsulation layer disposed on a side of the second encapsulation layer away from the substrate.
13. 13 . The display panel according to claim 12 , wherein materials of both the encapsulation unit and the third encapsulation layer comprise inorganic materials; a material of the second encapsulation layer comprises an organic material.
14. 14 . The display panel according to claim 12 , wherein the isolation structure comprises a first isolation portion and a second isolation portion stacked in sequence in the direction away from the substrate, wherein the second isolation portion is disposed on the first isolation portion and extends outward along a sidewall of the first isolation portion.
15. 15 . The display panel according to claim 12 , wherein the light-emitting unit comprises a first electrode, a light-emitting portion and a second electrode stacked in sequence in the direction away from the substrate, wherein the pixel openings expose part of the first electrode.
16. 16 . A display panel, wherein the display panel comprises: a substrate; a pixel defining layer, disposed on one side of the substrate; wherein the pixel defining layer comprises pixel openings, and in a direction away from the substrate, the pixel defining layer comprises a plurality of stacked pixel defining sublayers, wherein etching selectivity ratios of materials of the multiple pixel defining sublayers decrease in sequence in the direction away from the substrate; an isolation structure, disposed on a side of the pixel defining layer away from the substrate, wherein the isolation structure encloses to form isolation openings, and the isolation openings communicate with the pixel openings.
17. 17 . The display panel according to claim 16 , wherein the pixel defining layer comprises a first pixel defining sublayer, a second pixel defining sublayer and a third pixel defining sublayer stacked in sequence along the direction away from the substrate.
18. 18 . The display panel according to claim 17 , wherein densities of the first pixel defining sublayer, the second pixel defining sublayer and the third pixel defining sublayer decrease in sequence.
19. 19 . The display panel according to claim 18 , wherein in a direction from the first pixel defining sublayer to the third pixel defining sublayer, at least two layers in the pixel defining layer comprise an oxygen element, and a content of the oxygen element increases gradually; or, in the direction from the first pixel defining sublayer to the third pixel defining sublayer, at least two layers of the pixel defining layer comprise a nitrogen element, and a content of the nitrogen element decreases gradually.
20. 20 . An electronic device, wherein the electronic device comprises the display panel of claim 1 .

Description

CROSS-REFERENCE TO RELATED APPLICATIONS The present application claims priority to the Chinese Patent Application No. 202411574143.3, filed on Nov. 6, 2024, and the entire contents of the aforementioned application are hereby incorporated by reference in its entirety. FIELD The present application relates to the field of display technology, and more particularly to a display panel and an electronic device BACKGROUND Embodiments of the present application provide a display panel, and the display panel includes: a substrate; a pixel defining layer, disposed on one side of the substrate and provided with a plurality of pixel openings, and sidewalls of the pixel openings are arranged continuously, and in a direction away from the substrate, the sidewalls of the pixel openings sequentially have a first taper angle and a second taper angle, and the first taper angle and the second taper angle are angles formed between a tangent line at a point on the sidewall of the pixel opening and a plane where the substrate is located, and the second taper angle is greater than or equal to the first taper angle; an isolation structure, disposed on a side of the pixel defining layer away from the substrate, and the isolation structure is enclosed to form isolation openings, and the isolation openings communicate with the pixel openings. In some embodiments, the present application also provides a display panel, and the display panel includes: a substrate; a pixel defining layer, disposed on one side of the substrate; and the pixel defining layer includes pixel openings, and in a direction away from the substrate, the pixel defining layer includes a plurality of stacked pixel defining sublayers, and etching selectivity ratios of materials of the multiple pixel defining sublayers decrease in sequence in the direction away from the substrate; an isolation structure, disposed on a side of the pixel defining layer away from the substrate, and the isolation structure encloses to form isolation openings, and the isolation openings communicate with the pixel openings. In some embodiments, the present application also provides an electronic device, and the electronic device includes the display panel disclosed in the present application, or includes a display panel prepared by the preparation method of the display panel disclosed in the present application. The display panel and electronic device provided by the present application, by setting the second taper angle on the sidewall of the pixel opening to be greater than or equal to the first taper angle, can avoid damaging the light-emitting unit during the patterning process of the light-emitting unit, thereby improving the display effect of the display panel. BRIEF DESCRIPTION OF THE DRAWINGS To more clearly illustrate the embodiments of the present application, a brief introduction will be given to the drawings that need to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present application and therefore should not be considered as limiting the scope. FIG. 1 is a cross-sectional view of a display panel in the related technology provided by embodiments of the present application; FIG. 2a is one of the cross-sectional views showing the inclined arrangement of the pixel opening of the display panel provided by embodiments of the present application; FIG. 2b is another cross-sectional view showing the inclined arrangement of the pixel opening of the display panel provided by embodiments of the present application; FIG. 3a is one of the cross-sectional views showing the pixel defining layer including a stacked first pixel defining sublayer, second pixel defining sublayer and third pixel defining sublayer of the display panel provided by embodiments of the present application; FIG. 3b is another cross-sectional view showing the pixel defining layer including a stacked first pixel defining sublayer, second pixel defining sublayer and third pixel defining sublayer of the display panel provided by embodiments of the present application; FIG. 3c is a top view of a first pixel sub-opening, a second pixel sub-opening and a third pixel sub-opening provided by embodiments of the present application; FIG. 4 is a cross-sectional view of the display panel including an isolation structure provided by embodiments of the present application; FIG. 5 is a cross-sectional view of the display panel including an encapsulation unit provided by embodiments of the present application; FIG. 6 is a cross-sectional view of the display panel including a second encapsulation layer and a third encapsulation layer provided by embodiments of the present application; FIG. 7 is a flow diagram of a method for preparing a display panel provided by embodiments of the present application; FIG. 8 is a cross-sectional view showing the formation of a first electrode layer at one side of the substrate provided by embodiments of the present application; FIG. 9 is