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KR-102962085-B1 - DISPLAY DEVICE

KR102962085B1KR 102962085 B1KR102962085 B1KR 102962085B1KR-102962085-B1

Abstract

A display device is provided. The display device includes a bank layer extending in a first direction and a second direction intersecting the first direction and surrounding a plurality of subpixels, a first electrode disposed extending in the first direction from the subpixel, a plurality of second electrodes spaced apart from the first electrode in the second direction with the first electrode in between and extending in the first direction, a first light-emitting element disposed on any one of the first electrode and the plurality of second electrodes, and a plurality of light-emitting elements including a second light-emitting element with one end disposed on the other of the plurality of second electrodes, a first connecting electrode disposed on the first electrode and in contact with the first light-emitting element, and a second connecting electrode disposed on the second electrode and in contact with the second light-emitting element, wherein the second electrode is disposed on different subpixels and overlaps with the bank layer disposed between the subpixels.

Inventors

  • 이원준
  • 김동우

Assignees

  • 삼성디스플레이 주식회사

Dates

Publication Date
20260508
Application Date
20211220

Claims (20)

  1. A bank layer extending in a first direction and a second direction intersecting the first direction, and surrounding a plurality of subpixels; A first electrode arranged extending in the first direction from the above subpixel; A plurality of second electrodes spaced apart from the first electrode in the second direction with the first electrode in between, and extended in the first direction; A plurality of light-emitting elements disposed in each of the plurality of subpixels, comprising a first light-emitting element disposed on one of the first electrode and the plurality of second electrodes, and a second light-emitting element having one end disposed on the other of the plurality of second electrodes; A first connecting electrode disposed on the first electrode and in contact with the first light-emitting element; and It includes a second connecting electrode disposed on the second electrode and in contact with the second light-emitting element, A display device in which a portion extending in the first direction of the second electrode is disposed in different subpixels arranged in the second direction and overlaps with the bank layer disposed between the subpixels.
  2. In Article 1, A display device in which the maximum width of the second electrode is greater than the width of the portion disposed between the different subpixels in the bank layer.
  3. A bank layer extending in a first direction and a second direction intersecting the first direction, and surrounding a plurality of subpixels; A first electrode arranged extending in the first direction from the above subpixel; A plurality of second electrodes spaced apart from the first electrode in the second direction with the first electrode in between, and extended in the first direction; A plurality of light-emitting elements, each comprising a first light-emitting element disposed on any one of the first electrode and the plurality of second electrodes, and a second light-emitting element having one end disposed on the other of the plurality of second electrodes; A first connecting electrode disposed on the first electrode and in contact with the first light-emitting element; and It includes a second connecting electrode disposed on the second electrode and in contact with the second light-emitting element, The second electrode is disposed on different subpixels and overlaps with the bank layer disposed between the subpixels, and The maximum width of the second electrode is greater than the width of the portion disposed between the different subpixels in the bank layer, and A first bank pattern extending in the first direction from the above subpixel and overlapping with the first electrode; and It further includes second bank patterns arranged across different subpixels adjacent in the second direction with the first bank pattern in between, and A display device in which the second electrode overlaps with the second bank pattern and the maximum width of the second electrode is greater than the width of the second bank pattern.
  4. In Paragraph 3, The first light-emitting element is disposed between either the first bank pattern and the second bank pattern, and The second light-emitting element is a display device positioned between the first bank pattern and the other of the second bank patterns.
  5. In Article 2, A display device further comprising a lower electrode disposed to overlap with the bank layer and the second electrode, and disposed on a different layer from the second electrode.
  6. In Article 2, The second electrode above includes an electrode stem portion extending in the first direction; and It includes an electrode extension portion connected to the electrode stem portion and having a width greater than that of the electrode stem portion, The above electrode extension is a display device arranged across different subpixels.
  7. A bank layer extending in a first direction and a second direction intersecting the first direction, and surrounding a plurality of subpixels; A first electrode arranged extending in the first direction from the above subpixel; A plurality of second electrodes spaced apart from the first electrode in the second direction with the first electrode in between, and extended in the first direction; A plurality of light-emitting elements, each comprising a first light-emitting element disposed on any one of the first electrode and the plurality of second electrodes, and a second light-emitting element having one end disposed on the other of the plurality of second electrodes; A first connecting electrode disposed on the first electrode and in contact with the first light-emitting element; and It includes a second connecting electrode disposed on the second electrode and in contact with the second light-emitting element, The second electrode is disposed at different subpixels and overlaps with the bank layer disposed between the subpixels, and , The second electrode comprises a first electrode line on which the second light-emitting element is disposed, and a second electrode line on which the first light-emitting element is disposed. The second connecting electrode is disposed on the first electrode line of the second electrode, and A first extension portion disposed on the second electrode line and in contact with the first light-emitting element; A second extension portion disposed on the first electrode and in contact with the second light-emitting element; and A display device further comprising a third connecting electrode including a first connecting portion disposed on the bank layer, connecting the first extension portion and the second extension portion.
  8. In Article 7, The above subpixel includes a first subpixel and a second subpixel adjacent to the second direction of the first subpixel, and The first subpixel and the second subpixel share the second electrode line of the second electrode, and A display device in which the first light-emitting element of the first subpixel and the second light-emitting element of the second subpixel are disposed on the same second electrode.
  9. A bank layer extending in a first direction and a second direction intersecting the first direction, and surrounding a plurality of subpixels; A first electrode arranged extending in the first direction from the above subpixel; A plurality of second electrodes spaced apart from the first electrode in the second direction with the first electrode in between, and extended in the first direction; A plurality of light-emitting elements, each comprising a first light-emitting element disposed on any one of the first electrode and the plurality of second electrodes, and a second light-emitting element having one end disposed on the other of the plurality of second electrodes; A first connecting electrode disposed on the first electrode and in contact with the first light-emitting element; and It includes a second connecting electrode disposed on the second electrode and in contact with the second light-emitting element, The second electrode is disposed on different subpixels and overlaps with the bank layer disposed between the subpixels, and A display device comprising an electrode hole arranged to overlap with the bank layer between different subpixels, wherein the second electrode is arranged.
  10. In Article 9, It further includes a first insulating layer disposed on the first electrode and the second electrodes, and A display device comprising a first insulating layer arranged to overlap with the electrode hole.
  11. In Article 9, The light-emitting element, and a second insulating layer disposed on the bank layer; and It further includes a third insulating layer disposed on the second insulating layer and disposed below the first connecting electrode and the second connecting electrode, and The second insulating layer comprises a plurality of second opening holes disposed on the bank layer, and The above third insulating layer is a display device comprising a plurality of third opening holes disposed on the bank layer.
  12. In Article 11, The second opening hole and the third opening hole are each a display device smaller in size than the electrode hole of the second electrode.
  13. In Article 11, The second opening hole and the third opening hole are each disposed on the bank layer disposed between the different subpixels, and A display device in which the second opening hole and the third opening hole do not overlap each other.
  14. In Article 1, It further includes a third electrode disposed between the first electrode and the second electrode and extended in the first direction, The first light-emitting element has a first end disposed on the first electrode and a second end disposed on any one of the second electrodes, and The above second light-emitting element is a display device in which a first end is disposed on the third electrode and a second end is disposed on the other of the second electrodes.
  15. A bank layer extending in a first direction and a second direction intersecting the first direction, and surrounding a plurality of subpixels; A first electrode arranged extending in the first direction from the above subpixel; A plurality of second electrodes spaced apart from the first electrode in the second direction with the first electrode in between, and extended in the first direction; A plurality of light-emitting elements, each comprising a first light-emitting element disposed on any one of the first electrode and the plurality of second electrodes, and a second light-emitting element having one end disposed on the other of the plurality of second electrodes; A first connecting electrode disposed on the first electrode and in contact with the first light-emitting element; and It includes a second connecting electrode disposed on the second electrode and in contact with the second light-emitting element, The second electrode is disposed on different subpixels and overlaps with the bank layer disposed between the subpixels, and It further includes a third electrode disposed between the first electrode and the second electrode and extended in the first direction, The first light-emitting element has a first end disposed on the first electrode and a second end disposed on any one of the second electrodes, and The second light-emitting element has a first end disposed on the third electrode and a second end disposed on the other of the second electrodes, and A first bank pattern extending in the first direction from the above subpixel and overlapping with the first electrode and the third electrode; and It further includes a plurality of second bank patterns spaced apart from the first bank pattern in the second direction with the first bank pattern in between, and Each of the plurality of second electrodes overlaps with different second bank patterns, and A display device in which one of the above-mentioned second electrodes overlaps with the second bank pattern disposed on each of the different above-mentioned subpixels.
  16. A bank layer extending in a first direction and a second direction intersecting the first direction, and surrounding a plurality of subpixels; A first electrode arranged extending in the first direction from the above subpixel; A plurality of second electrodes spaced apart from the first electrode in the second direction with the first electrode in between, and extended in the first direction; A plurality of light-emitting elements, each comprising a first light-emitting element disposed on any one of the first electrode and the plurality of second electrodes, and a second light-emitting element having one end disposed on the other of the plurality of second electrodes; A first connecting electrode disposed on the first electrode and in contact with the first light-emitting element; and It includes a second connecting electrode disposed on the second electrode and in contact with the second light-emitting element, The second electrode is disposed on different subpixels and overlaps with the bank layer disposed between the subpixels, and It further includes a third electrode disposed between the first electrode and the second electrode and extended in the first direction, The first light-emitting element has a first end disposed on the first electrode and a second end disposed on any one of the second electrodes, and The second light-emitting element has a first end disposed on the third electrode and a second end disposed on the other of the second electrodes, and A third connecting electrode comprising a first extension portion disposed on the third electrode and facing the second connecting electrode, and a second extension portion disposed on the second electrode and spaced apart from the second connecting electrode; A fourth connecting electrode comprising a third extension portion disposed on the second electrode and facing the first connecting electrode, and a fourth extension portion disposed on the first electrode and spaced apart from the first connecting electrode; and A display device further comprising a fifth connecting electrode including a fifth extension portion disposed on the third electrode and spaced apart from the first extension portion, and a sixth extension portion disposed on the second electrode and spaced apart from the third extension portion.
  17. A plurality of subpixels arranged in a first direction and a second direction intersecting the first direction and including a light-emitting region; A bank layer surrounding the above subpixels and the above light-emitting region; A portion extending in the first direction is disposed across different subpixels adjacent in the second direction, and a first electrode and a second electrode spaced apart from each other in the light-emitting region of the subpixel; A plurality of light-emitting elements disposed on the first electrode and the second electrode in the light-emitting region of the above subpixel; A first connecting electrode disposed on the first electrode and in contact with the first end of the light-emitting element; and It includes a second connecting electrode disposed on the second electrode and in contact with the second end of the light-emitting element, A display device in which the first electrode and the second electrode have a width measured in the second direction that is greater than the width of the bank layer and overlap with the bank layer disposed between the light-emitting regions of the subpixels adjacent in the second direction.
  18. A plurality of subpixels arranged in a first direction and a second direction intersecting the first direction and including a light-emitting region; A bank layer surrounding the above subpixels and the above light-emitting region; A first electrode and a second electrode spaced apart from each other in the light-emitting region of the subpixel, which are arranged across different subpixels adjacent in the second direction; A plurality of light-emitting elements disposed on the first electrode and the second electrode in the light-emitting region of the above subpixel; A first connecting electrode disposed on the first electrode and in contact with the first end of the light-emitting element; and It includes a second connecting electrode disposed on the second electrode and in contact with the second end of the light-emitting element, The first electrode and the second electrode have a width measured in the second direction that is greater than the width of the bank layer, and overlap with the bank layer disposed between the light-emitting regions of the subpixels adjacent in the second direction. It further includes a first bank pattern and a second bank pattern, each disposed in the light-emitting region of the subpixel and spaced apart from each other in the second direction, A display device wherein the first electrode and the second electrode are each disposed to cover the first bank pattern and the second bank pattern disposed on different subpixels.
  19. In Article 18, The light-emitting elements are each a display device disposed between the first bank pattern and the second bank pattern.
  20. In Article 17, The above subpixel includes a first subpixel and a second subpixel adjacent to the second direction of the first subpixel, and The first subpixel and the second subpixel share the second electrode, and The first electrode of the first subpixel is disposed on one side of the second direction of the second electrode, and The first electrode of the second subpixel is a display device disposed on the other side of the second direction of the second electrode.

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 the arrangement of wiring of a display device according to one embodiment. FIGS. 3 and FIGS. 4 are pixel circuit diagrams of a display device according to one embodiment. FIG. 5 is a plan view showing one pixel of a display device according to one embodiment. FIG. 6 is a plan view showing the arrangement of electrodes placed in one pixel of FIG. 5 and the bank layer. FIG. 7 is a plan view showing the arrangement of connecting electrodes and light-emitting elements placed in one pixel of FIG. 5. FIGS. 8 to 10 are plan views showing the arrangement of the first to third insulating layers placed in one pixel of FIG. 5. Figure 11 is a cross-sectional view taken along the line N1-N1' of Figure 5. Figure 12 is a cross-sectional view taken along the line N2-N2' of Figure 5. Figure 13 is a cross-sectional view taken along the line N3-N3' of Figure 5. FIG. 14 is a plan view showing a portion disposed between adjacent subpixels among the second electrodes of a display device according to one embodiment. FIG. 15 is a plan view showing the arrangement of opening holes formed in the second insulating layer and the third insulating layer of a display device according to one embodiment. Figure 16 is a cross-sectional view taken along the N4-N4' line of Figures 14 and 15. Figure 17 is a cross-sectional view taken along the N5-N5' line of Figures 14 and 15. FIG. 18 is a schematic diagram of a light-emitting element according to one embodiment. FIG. 19 is a plan view showing electrodes and a bank layer disposed in one pixel of a display device according to another embodiment. FIG. 20 is a plan view showing one subpixel of a display device according to another embodiment. FIG. 21 is a cross-sectional view taken along the line E1-E1' of FIG. 20. FIG. 22 is a cross-sectional view taken along the line E2-E2' of FIG. 20. FIG. 23 is a cross-sectional view taken along the line E3-E3' of FIG. 20. FIG. 24 is a plan view showing one pixel of a display device according to another embodiment. FIG. 25 is a cross-sectional view taken along the line E4-E4' of FIG. 24. Figure 26 is a cross-sectional view taken along the line E5-E5' of Figure 24. FIG. 27 is a cross-sectional view taken along the line E6-E6' of FIG. 24. 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 Computer), electronic watch, smart watch, watch phone, head-mounted display, mobile commu