CN-122003040-A - Display device, method of manufacturing the same, and electronic device including the same

Abstract

A display device, a method of manufacturing the same, and an electronic device including the display device are provided. The display device includes a substrate, a pixel electrode disposed on the substrate, and a pixel defining layer defining an opening exposing a central portion of the pixel electrode and including a trench portion recessed in a direction toward the pixel electrode. The pixel defining layer includes a first pixel defining layer adjacent to the opening and a second pixel defining layer spaced apart from the first pixel defining layer.

Inventors

• LI RONGGAO
• LI JUNXI
• LI ZHENZHU
• Ren Zhonglie
• ZHANG YINQI
• Cui Fanluo
• HUANG XINGLONG

Assignees

• 三星显示有限公司

Dates

Publication Date

20260508

Application Date

20251103

Priority Date

20241101

Claims (20)

1. 1. A display device, comprising: a substrate; A pixel electrode disposed on the substrate, and A pixel defining layer defining an opening exposing a central portion of the pixel electrode and including a trench portion recessed in a direction toward the pixel electrode, Wherein the pixel defining layer comprises: A first pixel defining layer adjacent to the opening, and A second pixel defining layer spaced apart from the first pixel defining layer.
2. 2. The display device according to claim 1, wherein, The pixel defining layer includes a black pixel defining layer.
3. 3. The display device according to claim 1, wherein, The trench portion is disposed to expose at least a portion of the pixel electrode.
4. 4. The display device according to claim 1, wherein, The pixel electrode is disposed to overlap the entire region of the first pixel defining layer.
5. 5. The display device according to claim 1, wherein, The first pixel defining layer is formed in a shape in which a width of the first pixel defining layer is narrowed in a direction away from the pixel electrode.
6. 6. The display device according to claim 1, wherein, An inclination angle of a portion of the first pixel defining layer adjacent to the opening is greater than an inclination angle of a portion of the first pixel defining layer adjacent to the trench portion.
7. 7. The display device according to claim 1, wherein, The inclination angle of the portion of the first pixel defining layer adjacent to the trench portion is 11 ° to 45 °.
8. 8. The display device according to claim 1, wherein, The pixel electrode is disposed to overlap at least a portion of the second pixel defining layer.
9. 9. The display device according to claim 1, wherein, The first pixel defining layer and the second pixel defining layer are spaced apart from each other by a distance of 2.0 μm to 2.2 μm.
10. 10. The display device according to any one of claims 1 to 9, further comprising: an anti-reflection member disposed on the pixel defining layer to overlap at least a portion of the groove portion.
11. 11. An electronic device, comprising: a substrate; A pixel electrode disposed on the substrate; a pixel defining layer defining an opening exposing a central portion of the pixel electrode and including a trench portion recessed in a direction toward the pixel electrode, and And a capping layer disposed on the trench portion.
12. 12. The electronic device of claim 11, wherein, The capping layer includes a material different from a material of the pixel defining layer.
13. 13. The electronic device of claim 11, wherein, The trench portion is disposed to expose at least a portion of the pixel electrode.
14. 14. The electronic device of claim 13, wherein, The capping layer is disposed to cover the at least a portion of the pixel electrode that is exposed.
15. 15. The electronic device of claim 11, wherein the pixel defining layer comprises: A first pixel defining layer adjacent to the opening, and A second pixel defining layer spaced apart from the first pixel defining layer.
16. 16. The electronic device of claim 15, wherein, The capping layer is disposed so as not to cover an uppermost end of the first pixel defining layer.
17. 17. The electronic device of claim 15, wherein, The capping layer is disposed to cover an uppermost end of the second pixel defining layer.
18. 18. The electronic device of claim 15, wherein, The capping layer overlaps the first pixel defining layer by more than 0 μm and less than or equal to 2.0 μm.
19. 19. The electronic device of claim 11, wherein, The thickness of the capping layer is 0.4 μm to 0.8 μm.
20. 20. The electronic device of any of claims 11-19, further comprising: an anti-reflection member disposed on the pixel defining layer to overlap at least a portion of the groove portion.

Description

Display device, method of manufacturing the same, and electronic device including the same The present application claims priority from korean patent application No. 10-2024-0153621, which was filed on 1 st 11 th 2024, to korean intellectual property office, and korean patent application No. 10-2025-007474, which was filed on 5 th 6 th 2025, to korean intellectual property office, the disclosures of which are incorporated herein by reference in their entirety. Technical Field One or more embodiments relate to a display device, a method of manufacturing the display device, and an electronic device including the display device. Background As the demand for display devices has increased, the demand for display devices for various uses has also increased. Due to this trend, display devices tend to be made larger or thinner. Accordingly, there is also an increasing demand for larger and thinner display devices that provide precise and vivid colors. Disclosure of Invention One or more embodiments include a display device having improved optical characteristics, a method of manufacturing the display device, and an electronic device including the display device. However, this is merely an example, and technical features of the present disclosure are not limited thereto. According to one aspect of the present disclosure, a display device includes a substrate, a pixel electrode disposed on the substrate, and a pixel defining layer defining an opening exposing a central portion of the pixel electrode and including a groove portion recessed in a direction toward the pixel electrode. The pixel defining layer includes a first pixel defining layer adjacent to the opening, and a second pixel defining layer spaced apart from the first pixel defining layer. In some embodiments, the pixel defining layer may include a black pixel defining layer. In some embodiments, the trench portion may be configured to expose at least a portion of the pixel electrode. In some embodiments, the pixel electrode may be disposed to overlap the entire region of the first pixel defining layer. In some embodiments, the first pixel defining layer may be formed in a shape in which a width of the first pixel defining layer is narrowed in a direction away from the pixel electrode. In some embodiments, a portion of the first pixel defining layer adjacent to the opening may have a tilt angle greater than a tilt angle of a portion of the first pixel defining layer adjacent to the trench portion. In some embodiments, the inclination angle of the portion of the first pixel defining layer adjacent to the trench portion may be 11 ° to 45 °. In some embodiments, the pixel electrode may be disposed to overlap at least a portion of the second pixel defining layer. In some embodiments, the first pixel defining layer and the second pixel defining layer may be spaced apart from each other by a distance of 2.0 μm to 2.2 μm. In some embodiments, the display device may further include an anti-reflection member disposed on the pixel defining layer to overlap at least a portion of the trench portion. According to another aspect of the present disclosure, an electronic device includes a substrate, a pixel electrode disposed on the substrate, a pixel defining layer defining an opening exposing a central portion of the pixel electrode and including a trench portion recessed in a direction toward the pixel electrode, and a capping layer disposed on the trench portion. In some embodiments, the capping layer may include a material different from that of the pixel defining layer. In some embodiments, the trench portion may be configured to expose at least a portion of the pixel electrode. In some embodiments, a capping layer may be disposed to cover at least a portion of the pixel electrode that is exposed. In some embodiments, the pixel defining layer may include a first pixel defining layer adjacent to the opening and a second pixel defining layer spaced apart from the first pixel defining layer. In some embodiments, the capping layer may be disposed so as not to cover the uppermost end of the first pixel defining layer. In some embodiments, a capping layer may be disposed to cover an uppermost end of the second pixel defining layer. In some embodiments, the capping layer may overlap the first pixel defining layer by more than 0 μm and less than or equal to 2.0 μm. In some embodiments, the capping layer may have a thickness of 0.4 μm to 0.8 μm. In some embodiments, the electronic device may further include an anti-reflection member disposed on the pixel defining layer to overlap at least a portion of the trench portion. Drawings These and/or other aspects will become apparent from and more readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings. Fig. 1 is a schematic perspective view of a display device according to an embodiment. Fig. 2 is a sectional view schematically illustrating an example of the I-I' se