KR-20260064978-A - METHOD FOR MANUFACTURING DISPLAY DEVICE, AND ELECTRONIC DEVICE INCLUDING DISPLAY PANEL

Abstract

One embodiment of the present invention provides a method for manufacturing a display panel comprising a pixel region and a connection region surrounding the pixel region, comprising: a step of forming a lower layer including a substrate; a step of forming a pixel circuit layer including an inorganic insulating layer and a pixel circuit so as to overlap with the pixel region on the lower layer; a step of removing a portion of the inorganic insulating layer that overlaps with the connection region; a step of forming a light-emitting diode on the pixel circuit layer; a step of forming a connection wiring that overlaps with the connection region using a sacrificial layer; and a step of removing the sacrificial layer.

Inventors

• 김성원
• 김경호
• 박준수
• 박준형

Assignees

• 삼성디스플레이 주식회사

Dates

Publication Date

20260508

Application Date

20241030

Claims (20)

1. A method for manufacturing a display panel comprising a pixel region and a connecting region surrounding the pixel region, A step of forming a lower layer including a substrate; A step of forming a pixel circuit layer including an inorganic insulating layer and a pixel circuit so as to overlap with the pixel region on the lower layer; A step of removing a portion of the above-mentioned inorganic insulating layer that overlaps with the above-mentioned connection region; A step of forming a light-emitting diode on the pixel circuit layer; A step of forming a connection wiring that overlaps with the connection area using a sacrificial layer; and A method for manufacturing a display panel comprising the step of removing the sacrificial layer.
2. In Article 1, A method for manufacturing a display panel in which the sacrificial layer comprises a hydrophobic material.
3. In Article 1, A method for manufacturing a display panel, wherein the step of removing the sacrificial layer includes removing the sacrificial layer through a cleaning process using water.
4. In Article 1, The step of forming the pixel circuit layer above is, The method includes the step of forming a signal line electrically connected to the pixel circuit. A method for manufacturing a display panel in which the signal line disposed in the pixel area extends to the connection area and comes into direct contact with the connection wiring.
5. In Paragraph 4, The above signal line is, A method for manufacturing a display panel, wherein the gate line extending along a first direction or the data line extending along a second direction intersecting the first direction.
6. In Article 1, The step of forming a connecting wire that overlaps with the connecting area using the above sacrificial layer; is, A step of forming the sacrificial layer having a first opening defined that overlaps with the above connection area; and A method for manufacturing a display panel, comprising the step of forming a connecting wire in an area overlapping with the first opening.
7. In Article 6, Between the step of forming the light-emitting diode and the step of forming the connecting wire, A step of inverting the display panel so that the upper and lower surfaces of the display panel are inverted; and A method for manufacturing a display panel, further comprising the step of removing the lower layer.
8. In Article 7, A method for manufacturing a display panel, wherein the above sacrificial layer is formed on the bottom surface of the above pixel circuit layer.
9. In Article 7, Between the step of forming the light-emitting diode and the step of inverting the display panel, The method further includes the step of forming an upper elastomer layer to cover the light-emitting diode; and A method for manufacturing a display panel, wherein the above connecting wires are disposed on the bottom surface of the upper elastomer layer.
10. In Article 7, After the step of removing the above-mentioned sacrificial layer, A method for manufacturing a display panel, further comprising the step of forming a lower elastomer layer disposed on the bottom surface of the pixel circuit layer and covering the connection wiring.
11. In Article 6, The steps of forming a connection wiring that overlaps with the connection area using the sacrificial layer and removing the sacrificial layer are: A method for manufacturing a display panel, performed between the step of forming the pixel circuit layer and the step of forming the light-emitting diode.
12. In Article 11, A method for manufacturing a display panel, wherein the above sacrificial layer is formed on the upper surface of the above pixel circuit layer.
13. In Article 11, The step of forming the lower layer includes the step of forming a base layer on the substrate; and A method for manufacturing a display panel, wherein the above connecting wiring is defined in the base layer and disposed within a second opening that overlaps with the first opening.
14. In Article 13, A method for manufacturing a display panel, wherein the second opening exposes the upper surface of the substrate.
15. In Article 13, A step of detaching the above substrate; and A display panel further comprising the step of forming a lower elastomer layer on the bottom surface of the base layer and the bottom surface of the connecting wire.
16. In Article 13, The step of forming the lower layer further includes the step of forming a lower elastomer layer interposed between the substrate and the base layer. A method for manufacturing a display panel, wherein the second opening exposes the upper surface of the lower elastomer layer.
17. In Article 11, A method for manufacturing a display panel, further comprising the step of forming an upper elastomer layer to cover the light-emitting diode and the stretched wiring.
18. In Article 6, The steps of forming a connection wiring that overlaps with the connection area using the sacrificial layer and removing the sacrificial layer are: A method for manufacturing a display panel, performed between the step of forming the lower layer and the step of forming the pixel circuit layer.
19. In Article 18, The step of forming the lower layer comprises the step of forming a lower elastomer layer on the substrate; A method for manufacturing a display panel, wherein the sacrificial layer and the connecting wiring are formed on the lower elastomer layer.
20. In Article 18, A method for manufacturing a display panel, further comprising the step of forming an upper elastomer layer to cover the light-emitting diode and the stretched wiring.

Description

Method for manufacturing a display panel and an electronic device including a display panel The present invention relates to a method for manufacturing a display panel and a method for manufacturing an electronic device including a display panel. In general, as display panels that visually display electrical signals advance, various display panels with excellent characteristics such as thinness, lightness, and low power consumption, as well as electronic devices containing them, are being introduced. For example, research and development is actively underway on display panels of various structures, such as flexible display panels that can be folded or rolled into a roll shape, and stretchable display panels, as well as electronic devices containing them. FIG. 1a is a schematic perspective view of an electronic device according to one embodiment of the present invention. FIG. 1b is a block diagram schematically illustrating an electronic device according to one embodiment of the present invention. FIG. 2 is a schematic perspective view of a display panel according to one embodiment of the present invention. FIGS. 3A and FIGS. 3B are perspective views showing the display panel of FIG. 2 extended in the first direction. FIG. 3c is a perspective view showing the display panel of FIG. 2 extended in a second direction. FIG. 3d is a perspective view showing the display panel of FIG. 2 extended in the first direction and the second direction. FIG. 3e is a perspective view showing the display panel of FIG. 2 extended in a third direction. FIG. 4 is a schematic plan view of a display panel according to one embodiment of the present invention. FIG. 5 is a plan view schematically showing the arrangement of pixels of a display panel according to one embodiment of the present invention. FIG. 6 is a cross-sectional view schematically showing a part of a display panel according to one embodiment of the present invention. FIGS. 7a to 7c are each equivalent circuit diagrams of pixels of a display panel according to an embodiment of the present invention. FIGS. 8a to 8d are cross-sectional views schematically showing a light-emitting diode of a display panel according to one embodiment of the present invention. FIG. 9 is a schematic plan view showing a part of a display panel according to one embodiment of the present invention. FIG. 10 is a cross-sectional view schematically showing a part of a display panel according to one embodiment of the present invention. FIGS. 11a to 11j are cross-sectional views sequentially illustrating the steps of a method for manufacturing a display panel according to an embodiment of the present invention. FIG. 12 is a cross-sectional view schematically showing a part of a display panel according to another embodiment of the present invention. FIGS. 13a to 13j are cross-sectional views sequentially illustrating the steps of a method for manufacturing a display panel according to another embodiment of the present invention. FIGS. 14a to 14i are cross-sectional views sequentially illustrating the steps of a method for manufacturing a display panel according to another embodiment of the present invention. FIG. 15 is a cross-sectional view schematically showing a part of a display panel according to another embodiment of the present invention. FIGS. 16a to 16h are cross-sectional views sequentially illustrating the steps of a method for manufacturing a display panel according to another embodiment of the present invention. FIG. 17 is a cross-sectional view schematically showing a part of a display panel according to another embodiment of the present invention. FIGS. 18a to 18h are cross-sectional views sequentially illustrating the steps of a method for manufacturing a display panel according to another embodiment of the present invention. FIGS. 19a to 19g are schematic perspective views illustrating embodiments of an electronic device including a display panel according to one embodiment of the present invention. The present invention is capable of various modifications and may have various embodiments; specific embodiments are illustrated in the drawings and described in detail in the detailed description. The effects and features of the present invention, and the methods for achieving them, will become clear by referring to the embodiments described below in detail together with the drawings. However, the present invention is not limited to the embodiments disclosed below but can be implemented in various forms. Hereinafter, embodiments of the present invention will be described in detail with reference to the attached drawings. When describing with reference to the drawings, identical or corresponding components are given the same reference numerals, and redundant descriptions thereof will be omitted. In the following embodiments, terms such as first, second, etc. are used not in a limiting sense, but for the purpose of distinguishing one component from another component. In the following exampl