KR-20260062196-A - DISPLAY PANEL, METHOD FOR MANUFACTURING THE SAME AND ELECTRONIC DEVICE INCLUDING DISPLAY PANEL

Abstract

The present invention comprises: a base layer having a first surface and a second surface facing the first surface; a first pixel circuit layer disposed on the first surface of the base layer and including insulating layers, a first wiring, and a first electrode pad; a second pixel circuit layer disposed on the first surface of the base layer and spaced apart from the first pixel circuit layer, and including insulating layers, a second wiring, and a second electrode pad; a first light-emitting diode disposed on the first pixel circuit layer and electrically connected to the first electrode pad; a second light-emitting diode disposed on the second pixel circuit layer and electrically connected to the second electrode pad; and a connecting wire disposed on the first surface of the base layer and electrically connecting the first wiring and the second wiring; wherein each of the connecting wire, the first electrode pad, and the second electrode pad has a lower surface facing the base layer and an upper surface facing the lower surface, and the upper surface of the connecting wire is the The present invention provides a display panel protruding from the upper surface of a first electrode pad and the upper surface of a second electrode pad, a method for manufacturing the same, and an electronic device including the display panel.

Inventors

• 김성원
• 박종화
• 박준수
• 박준형
• 조만규

Assignees

• 삼성디스플레이 주식회사

Dates

Publication Date

20260507

Application Date

20241025

Claims (20)

1. A base layer having a first surface and a second surface opposite to the first surface; A first pixel circuit layer disposed on the first surface of the base layer and comprising insulating layers, a first wiring, and a first electrode pad; A second pixel circuit layer disposed on the first surface of the base layer, spaced apart from the first pixel circuit layer, and comprising insulating layers, a second wiring, and a second electrode pad; A first light-emitting diode disposed on the first pixel circuit layer and electrically connected to the first electrode pad; A second light-emitting diode disposed on the second pixel circuit layer and electrically connected to the second electrode pad; and A connecting wire disposed on the first surface of the base layer and electrically connecting the first wire and the second wire; comprising Each of the above connecting wire, the first electrode pad, and the second electrode pad has a lower surface facing the base layer and an upper surface facing the lower surface, and The upper surface of the above connecting wire is a display panel protruding from the upper surface of the first electrode pad and the upper surface of the second electrode pad.
2. In paragraph 1, A display panel in which the above connecting wiring becomes thicker in the thickness direction as it moves away from the first light-emitting diode and the second light-emitting diode.
3. In paragraph 1, A display panel in which the connecting wire on a plane becomes thicker in a direction intersecting the extension direction of the connecting wire as it moves further away from the first light-emitting diode and the second light-emitting diode.
4. In paragraph 1, A display panel in which the base layer fills an opening defined by the first pixel circuit layer and the second pixel circuit layer.
5. In paragraph 1, A display panel in which the above connecting wires fill a portion of the opening defined by the first pixel circuit layer and the second pixel circuit layer.
6. In paragraph 5, A display panel having a stepped shape on the side of the above-mentioned opening.
7. In paragraph 1, A display panel having a bonding layer interposed between the first light-emitting diode and the first electrode pad and between the second light-emitting diode and the second electrode pad.
8. In paragraph 1, Each of the above first wiring and the above second wiring is, A display panel comprising a first part, a second part spaced apart from the first part, and a bridge line connecting the first part and the second part.
9. In paragraph 1, The device further comprises a cover layer located on the first light-emitting diode, the second light-emitting diode, and the connecting wire. A display panel comprising the above base layer and the above cover layer, wherein the above base layer and the above cover layer include an elastic material.
10. In Paragraph 9, A display panel in which the lower surface of the connecting wire contacts the base layer and the upper surface of the connecting wire contacts the cover layer.
11. A step of forming a pixel circuit layer on a first substrate, comprising insulating layers, a first wiring, a second wiring, a first electrode pad electrically connected to the first wiring, and a second electrode pad electrically connected to the second wiring; A step of forming a bonding layer so as to overlap each of the first electrode pad and the second electrode pad; A step of forming a connecting wire that electrically connects the first wiring and the second wiring; A step of attaching a first light-emitting diode to the first electrode pad and attaching a second light-emitting diode to the second electrode pad; A step of forming a cover layer on the first light-emitting diode, the second light-emitting diode, and the connecting wiring; A step of separating the first substrate and the pixel circuit layer; A step of removing a portion of the pixel circuit layer to form an opening and a first pixel circuit layer and a second pixel circuit layer spaced apart with the opening in between; and A method for manufacturing a display panel, comprising the step of forming a base layer that supports the first pixel circuit layer and the second pixel circuit layer.
12. In Paragraph 11, The step of attaching a first light-emitting diode to the first electrode pad and attaching a second light-emitting diode to the second electrode pad is A step of preparing a second substrate having a first surface facing the first substrate and a second surface opposite to the first surface, a resin layer disposed on the first surface of the second substrate, the first light-emitting diode and the second light-emitting diode attached to the resin layer; and A method for manufacturing a display panel comprising the step of applying pressure to the second substrate to attach the first light-emitting diode to the first electrode pad and attach the second light-emitting diode to the second electrode pad.
13. In Paragraph 12, A method for manufacturing a display panel in which, when the second substrate is pressed, the connecting wire contacts the resin layer.
14. In Paragraph 11, A method for manufacturing a display panel, wherein the above connecting wiring is formed to be thicker in the thickness direction as it moves away from the first light-emitting diode and the second light-emitting diode.
15. In Paragraph 11, A method for manufacturing a display panel, wherein the above connecting wire is formed thicker in a direction intersecting the extension direction of the connecting wire as it moves further away from the first light-emitting diode and the second light-emitting diode on a plane.
16. A step of forming a pixel circuit layer on a first substrate, comprising insulating layers, a first wiring, a second wiring, a first electrode pad electrically connected to the first wiring, and a second electrode pad electrically connected to the second wiring; A step of removing a portion of the pixel circuit layer to form an opening and a first pixel circuit layer and a second pixel circuit layer spaced apart with the opening in between; A step of patterning a bonding layer to overlap each of the first electrode pad and the second electrode pad; A step of forming a connecting wire that electrically connects the first wiring and the second wiring; A step of attaching a first light-emitting diode to the first electrode pad and attaching a second light-emitting diode to the second electrode pad; A step of forming a cover layer on the first light-emitting diode, the second light-emitting diode, and the connecting wiring; A step of separating the first substrate, the first pixel circuit layer, the second pixel circuit layer, and the cover layer; and A method for manufacturing a display panel, comprising the step of forming a base layer that supports the first pixel circuit layer and the second pixel circuit layer.
17. In Paragraph 11, The step of attaching a first light-emitting diode to the first electrode pad and attaching a second light-emitting diode to the second electrode pad is A step of preparing a second substrate having a first surface facing the first substrate and a second surface opposite to the first surface, a resin layer disposed on the first surface of the second substrate, the first light-emitting diode and the second light-emitting diode attached to the resin layer; and A method for manufacturing a display panel comprising the step of applying pressure to the second carrier substrate to attach the first light-emitting diode to the first electrode pad and attach the second light-emitting diode to the second electrode pad.
18. In Paragraph 17, A method for manufacturing a display panel in which, when the second substrate is pressed, the connecting wire contacts the resin layer.
19. In Paragraph 16, A method for manufacturing a display panel, wherein the above connecting wiring is formed to fill a portion of the above opening.
20. In Paragraph 16, A method for manufacturing a display panel, wherein the above connecting wiring is formed to be thicker in the thickness direction as it moves away from the first light-emitting diode and the second light-emitting diode.

Description

Display panel, method for manufacturing the same, and electronic device including a display panel The present invention relates to a display panel, a method for manufacturing the same, and an electronic device comprising a display panel. Embodiments of the present invention disclose a display panel, a method for manufacturing a display panel, and an electronic device comprising 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. 1 is a schematic perspective view of a display panel according to one embodiment of the present invention. FIGS. 2A and FIGS. 2B are perspective views showing the display panel of FIG. 1 extended in a first direction. FIG. 2c is a perspective view showing the display panel of FIG. 1 extended in a second direction. FIG. 2d is a perspective view showing the display panel of FIG. 1 extended in the first direction and the second direction. FIG. 2e is a perspective view showing the display panel of FIG. 1 extended in a third direction. FIGS. 3a and FIGS. 3b are each schematic plan views showing the display area of a display panel according to one embodiment of the present invention. FIG. 4 is a schematic diagram showing an electronic device according to one embodiment of the present invention. FIGS. 5a to 5d are equivalent circuit diagrams of pixels of a display panel according to one embodiment of the present invention. FIGS. 6a and FIGS. 6d are cross-sectional views schematically showing a light-emitting diode of a display panel according to one embodiment of the present invention. FIG. 7 is a schematic plan view showing a part of the display area of a display panel according to one embodiment of the present invention. FIG. 8 is a cross-sectional view along line I-I' of the display panel of FIG. 7. FIGS. 9a to 9h are cross-sectional views illustrating a process according to a method for manufacturing a display panel according to an embodiment of the present invention. FIG. 10 is a schematic plan view showing a part of the display area of a display panel according to one embodiment of the present invention. FIG. 11 is a cross-sectional view schematically showing a part of a display panel according to one embodiment of the present invention. FIG. 12 is a schematic plan view showing a part of the display area of a display panel according to one embodiment of the present invention. FIGS. 13a to 13d are cross-sectional views illustrating a process according to a method for manufacturing a display panel according to an embodiment of the present invention. FIG. 14 is a cross-sectional view schematically showing a part of a display panel according to one embodiment of the present invention. FIG. 15a is a schematic perspective view of an electronic device including a display panel according to one embodiment of the present invention. FIG. 15b is a block diagram showing an electronic device including a display panel according to one embodiment of the present invention. FIGS. 16a to 16d are schematic perspective views illustrating embodiments of an electronic device including a display panel according to one embodiment of the present invention. FIGS. 17a to 17e 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 this specification, terms such as first, second, etc. are used not in a limiting sense, but for the purpose of distinguishing one component from another. In this specification, singular expressions include plural expressions unless the context clearly indicates otherwise. In this specification, terms such as "include" or "have" mean that the features or components described in the specification exist, and do