CN-122003044-A - Display device

Abstract

Disclosed is a feature of a display device including an example of the display device including a substrate, a circuit portion disposed on the substrate, a connection electrode connected to the circuit portion and disposed on the first insulating layer, a second insulating layer disposed on the connection electrode, a first electrode pattern connected to the connection electrode and disposed on the second insulating layer, a third insulating layer disposed on the first electrode pattern, a second electrode pattern connected to the first electrode pattern and disposed on the third insulating layer and in a first through hole of the third insulating layer, a fourth insulating layer disposed on the second electrode pattern, and a third electrode pattern connected to the second electrode pattern and formed on the fourth insulating layer and in a second through hole of the fourth insulating layer, and the first through hole or the second through hole may include at least two inclined surfaces having slopes different from each other.

Inventors

• Xuan Yinghuan
• Lin Chenzhu
• LI YINGZHU
• LI ZHUXIANG

Assignees

• 爱思开海力士有限公司

Dates

Publication Date

20260508

Application Date

20250603

Priority Date

20241107

Claims (20)

1. 1. A display device, the display device comprising: a substrate; A first insulating layer disposed over the substrate; a circuit portion provided in the first insulating layer; A connection electrode provided on the first insulating layer and electrically connected to the circuit portion; A second insulating layer disposed on the connection electrode; A first electrode pattern disposed on the second insulating layer and electrically connected to the connection electrode; a third insulating layer disposed on the first electrode pattern; A second electrode pattern disposed on the third insulating layer and in the first via hole of the third insulating layer and electrically connected to the first electrode pattern; A fourth insulating layer disposed on the second electrode pattern, and A third electrode pattern disposed on the fourth insulating layer and in the second via hole of the fourth insulating layer, the third electrode pattern being electrically connected to the second electrode pattern, Wherein at least one of the first through hole or the second through hole includes at least two inclined surfaces having slopes different from each other.
2. 2. The display device according to claim 1, wherein the second via includes a first inclined surface provided on the second electrode pattern and a second inclined surface connected to the first inclined surface, and The slope of the first inclined surface of the second through hole is greater than the slope of the second inclined surface of the second through hole.
3. 3. The display device according to claim 2, wherein the second through hole further includes a third inclined surface provided on the second inclined surface of the second through hole, and a slope of the third inclined surface is larger than a slope of the second inclined surface of the second through hole.
4. 4. The display device according to claim 2, wherein the first via hole includes a first inclined surface provided on the first electrode pattern and a second inclined surface connected to the first inclined surface, and The slope of the first inclined surface of the first through hole is greater than the slope of the second inclined surface of the first through hole.
5. 5. The display device of claim 4, wherein the first via further comprises a third inclined surface located on the second inclined surface of the first via, and The slope of the third inclined surface of the first through hole is greater than the slope of the second inclined surface of the first through hole.
6. 6. The display device according to claim 1, wherein the second via includes a first inclined surface provided on the second electrode pattern, a second inclined surface connected to the first inclined surface, and a third inclined surface connected to the second inclined surface.
7. 7. The display device according to claim 6, wherein a slope of the first inclined surface of the second through hole is larger than a slope of the second inclined surface of the second through hole, and The slope of the second inclined surface of the second through hole is greater than the slope of the third inclined surface of the second through hole.
8. 8. The display device according to claim 1, wherein a thickness of the fourth insulating layer is greater than a thickness of the third insulating layer.
9. 9. The display device according to claim 1, wherein the second through hole includes three or more inclined surfaces having slopes different from each other, and The first through hole includes one inclined surface or two inclined surfaces having different slopes from each other.
10. 10. The display device of claim 1, wherein the first, second and third sub-pixels are disposed on the substrate, The first electrode pattern includes a first reflective electrode of the first sub-pixel and a first connection electrode of the first sub-pixel to the third sub-pixel, The second electrode pattern includes a second connection electrode of the first to third sub-pixels and a second reflection electrode of the second sub-pixel, and The third electrode pattern includes third connection electrodes of the first to third sub-pixels and third reflection electrodes of the third sub-pixels.
11. 11. The display device according to claim 10, wherein each of the first, second, and third sub-pixels includes a light-emitting region and a non-light-emitting region disposed adjacent to the light-emitting region, and The first, second and third reflective electrodes are disposed on the light emitting region of each sub-pixel.
12. 12. The display device according to claim 1, the display device further comprising: and a first electrode disposed on and in direct contact with the third electrode pattern.
13. 13. The display device according to claim 12, the display device further comprising: A common light emitting layer disposed on the first electrode, and And a second electrode disposed on the common light emitting layer.
14. 14. A display device, the display device comprising: a substrate; A first sub-pixel, a second sub-pixel, and a third sub-pixel, the first sub-pixel, the second sub-pixel, and the third sub-pixel being defined on the substrate, each of the first sub-pixel, the second sub-pixel, and the third sub-pixel emitting light of a respective color; A first reflective electrode disposed on the substrate of the first subpixel; a first connection electrode disposed on the substrate of the first to third sub-pixels; a first insulating layer disposed on the first reflective electrode and the first connection electrode; a second connection electrode disposed on the first insulating layer of the first to third sub-pixels; A second reflective electrode disposed on the first insulating layer of the second subpixel; a second insulating layer disposed on the second reflective electrode and the second connection electrode; A third connection electrode disposed on the second insulating layer of the first to third sub-pixels; a third reflective electrode disposed on the second insulating layer of the third subpixel; A first electrode disposed on the third connection electrode and the third reflection electrode; A common light emitting layer disposed on the first electrode, and A second electrode disposed on the common light emitting layer, Wherein a distance between the first reflective electrode and the second electrode is greater than a distance between the second reflective electrode and the second electrode, The distance between the second reflective electrode and the second electrode is greater than the distance between the third reflective electrode and the second electrode, The first insulating layer includes a first via and the second insulating layer includes a second via, and The first through hole or the second through hole includes at least two inclined surfaces having slopes different from each other.
15. 15. The display device according to claim 14, wherein the second through hole includes a first inclined surface provided on the second connection electrode and a second inclined surface connected to the first inclined surface, and The slope of the first inclined surface of the second through hole is greater than the slope of the second inclined surface of the second through hole.
16. 16. The display device according to claim 15, wherein the second through hole further includes a third inclined surface provided on the second inclined surface of the second through hole, and The slope of the third inclined surface is greater than the slope of the second inclined surface of the second through hole.
17. 17. The display device according to claim 15, wherein the first through hole includes a first inclined surface provided on the first connection electrode and a second inclined surface connected to the first inclined surface, and The slope of the first inclined surface of the first through hole is greater than the slope of the second inclined surface of the first through hole.
18. 18. The display device according to claim 17, wherein the first through hole further comprises a third inclined surface provided on the second inclined surface of the first through hole, and The slope of the third inclined surface of the first through hole is greater than the slope of the second inclined surface of the first through hole.
19. 19. The display device according to claim 14, wherein the second through hole includes a first inclined surface provided on the second connection electrode, a second inclined surface connected to the first inclined surface, and a third inclined surface connected to the second inclined surface, and The slope of the first inclined surface of the first through hole is greater than the slope of the second inclined surface of the second through hole, and the slope of the second inclined surface of the second through hole is greater than the slope of the third inclined surface of the second through hole.
20. 20. The display device according to claim 14, wherein a thickness of the second insulating layer is greater than a thickness of the first insulating layer.

Description

Display device Technical Field Embodiments of the disclosed technology relate to a display device. Background With the development of information society, various simplified demands for display devices displaying images are increasing, and various types of display devices such as liquid crystal displays and organic light emitting diode displays are being used. Among such display devices, the organic light emitting diode display is self-luminous and has superior viewing angle and contrast ratio compared to a liquid crystal display (i.e., LCD). The organic light emitting diode display does not require a separate backlight, so that it is light-weight and thin, and has the advantage of low power consumption. In addition, the organic light emitting display has advantages of being driven at a low direct current voltage, having a fast response speed, and being particularly low in manufacturing cost. Recently, there is an increasing demand for display devices for various applications including, for example, augmented reality (i.e., AR), virtual reality (i.e., VR) applications, and other applications where ultra-high display resolution may be desired by using a light emitting display device. Disclosure of Invention Some embodiments of the present disclosure may provide a display device including a first via or a second via having at least two inclined surfaces having different inclinations such that an electrode pattern deposited in the first via or the second via is not interrupted. Some implementations of the disclosed technology provide a display device in which dark absorption (dark sop) defects (or failures) of an organic light emitting element are ameliorated by ensuring that electrode patterns deposited within a first via or a second via are not damaged. Some implementations of the disclosed technology provide a display device that can induce efficient and accurate microcavities in each subpixel because a planarization process is omitted in depositing an electrode pattern within the first or second via. In one aspect, a display device may include a substrate, a circuit portion disposed on the substrate, a connection electrode connected to the circuit portion and disposed on a first insulating layer, a second insulating layer disposed on the connection electrode, a first electrode pattern connected to the connection electrode and disposed on the second insulating layer, a third insulating layer disposed on the first electrode pattern, a second electrode pattern connected to the first electrode pattern and disposed on the third insulating layer and in a first via of the third insulating layer, a fourth insulating layer disposed on the second electrode pattern, and a third electrode pattern connected to the second electrode pattern and formed on the fourth insulating layer and in a second via of the fourth insulating layer. The first through hole or the second through hole may include at least two inclined surfaces having slopes different from each other. In another aspect of the present disclosure, a display device may include a substrate on which a first sub-pixel, a second sub-pixel, and a third sub-pixel are defined, a first reflective electrode disposed on the substrate of the first sub-pixel, a first connection electrode disposed on the substrate of the first sub-pixel to the third sub-pixel, a first insulating layer disposed on the first reflective electrode and the first connection electrode, a second connection electrode disposed on the first insulating layer of the first sub-pixel to the third sub-pixel, a second reflective electrode disposed on the first insulating layer of the second sub-pixel, a second insulating layer disposed on the second reflective electrode and the second connection electrode, a third connection electrode disposed on the second insulating layer of the first sub-pixel to the third sub-pixel, a third reflective electrode disposed on the second insulating layer of the first sub-pixel, a third reflective electrode disposed on the third reflective electrode and the third common electrode, and a third reflective electrode disposed on the first reflective electrode and the third common electrode. The distance between the first reflective electrode and the second electrode may be greater than the distance between the second reflective electrode and the second electrode, the distance between the second reflective electrode and the second electrode is greater than the distance between the third reflective electrode and the second electrode, the first insulating layer may include a first via hole and the second insulating layer may include a second via hole, and the first via hole or the second via hole may include at least two inclined surfaces having slopes different from each other. According to an embodiment of the present disclosure, the display device may include a first through hole or a second through hole having at least two inclined surfaces having different inclinations. Thus,