KR-102963138-B1 - DISPLAY DEVICE

KR102963138B1KR 102963138 B1KR102963138 B1KR 102963138B1KR-102963138-B1

Abstract

A display device is provided. A display device comprises: first electrodes including a first sub-electrode and a second sub-electrode spaced apart from each other on a substrate; a first insulating layer disposed on the substrate and including openings that expose a portion of the upper surface of the first electrode; a plurality of second electrodes disposed on the first insulating layer and arranged to overlap with the first electrodes; a plurality of light-emitting elements disposed on the first electrodes within the openings; a plurality of first connecting electrodes disposed within the openings and in contact with a first end of the light-emitting elements and the first electrode; a second insulating layer disposed within the openings and surrounding the light-emitting elements; and a plurality of second connecting electrodes disposed on the second electrode and the second insulating layer and in contact with the second electrode and the second end of the light-emitting elements, wherein the first connecting electrode includes a first electrode portion in contact with a first light-emitting element disposed on the first sub-electrode and a second electrode portion in contact with a second light-emitting element disposed on the second sub-electrode, and the second connecting electrode penetrates the first light-emitting element and the second insulating layer. It includes a third electrode part that contacts the second electrode part through a first contact hole, and a fourth electrode part that contacts the second light-emitting element.

Inventors

바슈르 베이더스
이현욱
이희근

Assignees

삼성디스플레이 주식회사

Dates

Publication Date: 20260511
Application Date: 20250512

Claims (20)

First electrodes including a first sub-electrode and a second sub-electrode spaced apart from each other on a substrate; A first insulating layer disposed on the substrate and including an opening that exposes a portion of the upper surface of the first electrode; A second electrode disposed on the first insulating layer and positioned to overlap with the first electrode; A plurality of light-emitting elements disposed on the first electrode within the above opening; A first connecting electrode disposed within the opening and in contact with the first electrode; A second insulating layer disposed within the opening and surrounding the light-emitting elements; and It includes a second connecting electrode disposed on the second electrode and the second insulating layer and in contact with the second electrode, The first connecting electrode comprises a first electrode portion in contact with a first light-emitting element disposed on the first sub-electrode among the light-emitting elements, and a second electrode portion in contact with a second light-emitting element disposed on the second sub-electrode among the light-emitting elements. The display device comprising the second connecting electrode, a third electrode portion in contact with the first light-emitting element and the second electrode portion, and a fourth electrode portion in contact with the second light-emitting element.
In Article 1, The above opening includes a first opening that overlaps with the first sub-electrode and the second sub-electrode, and A first contact hole penetrating the second insulating layer is disposed within the first opening, and A display device comprising a portion of the third electrode portion located within the first contact hole and in direct contact with the second electrode portion.
In Article 2, The above opening further includes a second opening spaced apart from the first opening and partially overlapping with the first sub-electrode, and a third opening spaced apart from the first opening and partially overlapping with the second sub-electrode. The above first light-emitting element is provided in multiple numbers, and One of the first light-emitting elements is disposed within the first opening, and the other of the first light-emitting elements is disposed within the second opening, and The above second light-emitting element is provided in multiple numbers, and A display device in which one of the second light-emitting elements is disposed within the first opening and the other of the second light-emitting elements is disposed within the third opening.
In Paragraph 3, A display device comprising a plurality of fifth electrode portions, each of which is disposed within the second opening and the third opening and contacts the light-emitting elements, wherein the first connecting electrode is further included.
In Article 2, The first electrode portion and the second electrode portion are each disposed on the first sub-electrode and the second sub-electrode, respectively, within the first opening, and A display device in which the second electrode portion has a wider width than the first electrode portion and a portion thereof is disposed between the first sub-electrode and the second sub-electrode.
In Article 2, The first electrode portion and the second electrode portion are spaced apart from each other below the second insulating layer, and A display device in which the third electrode portion and the fourth electrode portion are spaced apart from each other on the second insulating layer.
In Article 1, The first insulating layer is a display device comprising an insulating pattern portion disposed between the first electrode and the second electrode.
In Article 7, A display device in which the light-emitting elements have a shape extending in one direction and are arranged so that their sides are in contact with the sides of the insulating pattern portion.
In Article 8, The light-emitting element comprises a first semiconductor layer, a second semiconductor layer disposed on the first semiconductor layer, a light-emitting layer disposed between the first semiconductor layer and the second semiconductor layer, and an insulating film surrounding at least the outer surface of the light-emitting layer. A display device in which the length of the light-emitting element is longer than the length of the insulating film.
In Article 8, A display device in which the length of the light-emitting element is smaller than the thickness of the first insulating layer and larger than the thickness of the second insulating layer.
In Article 1, A via layer disposed between the substrate and the first electrode; and It further includes a conductive pattern and voltage wiring disposed between the via layer and the substrate, and The first sub-electrode contacts the conductive pattern through a second contact hole penetrating the via layer, and The above-mentioned fourth electrode portion is a display device that contacts the voltage wiring through a third contact hole penetrating the via layer.
In Article 11, It further includes a bank layer disposed on the first insulating layer and surrounding the region where the light-emitting elements are disposed, The second contact hole and the third contact hole are each display devices disposed on the outer edge of the bank layer.
In Article 12, The above-mentioned fourth electrode is a display device in which a portion thereof is disposed on the bank layer.
A first electrode comprising a first sub-electrode and a second sub-electrode spaced apart from each other and disposed within a pixel ; A first insulating layer including an opening that overlaps with the first electrode; A second electrode disposed on the first insulating layer to overlap with the first electrode; A plurality of light-emitting elements disposed within the opening and arranged along at least one side of the second electrode; A first connecting electrode having at least a portion disposed on the first electrode and in contact with the light-emitting elements within the opening; and It includes a second connecting electrode disposed on the second electrode and disposed to cover some of the light-emitting elements, The above first electrode is provided in multiple numbers, and The above opening includes a first opening that partially overlaps with two adjacent first electrodes among a plurality of first electrodes, and The first connecting electrode comprises a first electrode portion disposed on the first sub-electrode within the first opening, and a second electrode portion disposed on the second sub-electrode within the first opening. The second connecting electrode comprises a third electrode portion covering the first light-emitting elements among the second electrode disposed on the first sub-electrode and the light-emitting elements, and a fourth electrode portion covering the second light-emitting elements among the second electrode disposed on the second sub-electrode. The third electrode part and the second electrode part are in contact with each other, A display device in which the portion where the third electrode portion and the second electrode portion contact each other overlaps with the opening on a plane.
In Article 14, The above opening further includes a second opening spaced apart from the first opening with the second electrode disposed on the first sub-electrode in between, and a third opening spaced apart from the first opening with the second electrode disposed on the second sub-electrode in between. The first light-emitting elements are disposed within the first opening and the second opening, and The second light-emitting elements are a display device disposed within the first opening and the third opening.
In Article 15, The first opening, the second opening, and the third opening have a shape extending in a first direction, wherein the width of the first opening measured along a second direction intersecting the first direction is greater than the width of the second opening and the width of the third opening, and A display device in which the first light-emitting elements and the second light-emitting elements are each positioned adjacent to each other on both sides of the second electrode.
In Article 16, A display device in which the width of the first electrode measured along the first direction is greater than the width of the second electrode measured along the first direction.
In Article 14, The above pixels are provided in plurality and arranged in a first direction and a second direction intersecting the first direction, and The first electrode and the second electrode each have a shape extending in a third direction that intersects the first direction and the second direction, and The light-emitting elements are a display device arranged along the third direction.
In Article 14, The first electrode and the second electrode have a cross shape in a planar plane, The above opening includes main holes surrounding the second electrode and a hole connecting portion connected to the main hole, and A display device in which the third electrode portion and the second electrode portion are arranged so that a portion of them overlap each other within the hole connection portion.
In Article 14, The first electrode and the second electrode each have a shape including side sides extending in a first direction and a second direction intersecting the first direction, and The above opening is positioned to surround the second electrode, and The above light-emitting elements are arranged to surround the sides of the second electrode. A display device.

Description

Display Device The present invention relates to a display device. The importance of display devices is increasing along with the development of multimedia. In response to this, various types of display devices, such as Organic Light Emitting Displays (OLEDs) and Liquid Crystal Displays (LCDs), are being used. There are self-luminous display devices that include a light-emitting element as a device for displaying images. Self-luminous display devices include organic light-emitting display devices that use organic materials as light-emitting materials as light-emitting elements, or inorganic light-emitting display devices that use inorganic materials as light-emitting materials. FIG. 1 is a schematic plan view of a display device according to one embodiment. FIG. 2 is a plan view showing one pixel of a display device according to one embodiment. FIG. 3 is a plan view showing the relative arrangement of electrodes and light-emitting elements in one pixel of FIG. 2. FIG. 4 is a plan view showing the relative arrangement of connecting electrodes and light-emitting elements in one pixel of FIG. 2. Figure 5 is a cross-sectional view taken along the line N1-N1' of Figure 2. Figure 6 is a cross-sectional view taken along the line N2-N2' of Figure 2. FIG. 7 is a schematic diagram of a light-emitting element according to one embodiment. Figure 8 is a cross-sectional view of the light-emitting element of Figure 7. FIG. 9 is a schematic diagram showing the light-emitting element of FIG. 8 placed within an opening. FIGS. 10 to 16 are cross-sectional views illustrating the manufacturing process of a display device according to one embodiment. FIG. 17 is a plan view showing one pixel of a display device according to another embodiment. Figure 18 is a cross-sectional view taken along the line N3-N3' of Figure 17. FIG. 19 is a plan view showing one pixel of a display device according to another embodiment. FIG. 20 is a cross-sectional view taken along the line N4-N4' of FIG. 19. FIGS. 21 and FIGS. 22 are plan views showing one pixel of a display device according to another embodiment. FIG. 23 is a plan view showing the relative arrangement of electrodes, an aperture, and light-emitting elements in one pixel of a display device according to another embodiment. FIG. 24 is a plan view showing the relative arrangement of some light-emitting element groups and connecting electrodes in the display device of FIG. 23. FIG. 25 is a plan view showing the relative arrangement of electrodes, an aperture, and light-emitting elements in one pixel of a display device according to another embodiment. FIG. 26 is a plan view showing the relative arrangement of some groups of light-emitting elements and connecting electrodes in the display device of FIG. 25. FIG. 27 is a plan view showing the relative arrangement of electrodes, an aperture, and light-emitting elements in one pixel of a display device according to another embodiment. FIG. 28 is a plan view showing the relative arrangement of some light-emitting element groups and connecting electrodes in the display device of FIG. 27. The advantages 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 accompanying drawings. However, the present invention is not limited to the embodiments disclosed below but may be implemented in various different forms. These embodiments are provided merely to ensure that the disclosure of the present invention is complete and to fully inform those skilled in the art of the scope of the invention, and the present invention is defined only by the scope of the claims. Elements or layers referred to as "on" another element or layer include cases where another layer or element is interposed directly above or in the middle of another element. Likewise, "below," "left," and "right" refer to cases where they are interposed immediately adjacent to another element or where another layer or material is interposed in the middle. Throughout the specification, the same reference numerals refer to the same components. Although terms such as "first," "second," etc., are used to describe various components, it goes without saying that these components are not limited by these terms. These terms are used merely to distinguish one component from another. Therefore, it goes without saying that the first component mentioned below may also be the second component within the technical scope of the present invention. Hereinafter, embodiments will be described with reference to the attached drawings. FIG. 1 is a schematic plan view of a display device according to one embodiment. Referring to FIG. 1, the display device (10) displays a video or a still image. The display device (10) may refer to any electronic device that provides a display screen. For example, a television, laptop, monitor, billboard, Internet of Things, mobile phone, smartphone, tablet PC (Personal Comput