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US-12628523-B2 - Display apparatus

US12628523B2US 12628523 B2US12628523 B2US 12628523B2US-12628523-B2

Abstract

A display apparatus for minimizing image quality deterioration occurring due to external light includes a first pixel electrode arranged on a substrate, a pixel-defining layer arranged on the substrate, covering an edge of the first pixel electrode, and including a 1-1 st pixel opening exposing a portion of the first pixel electrode, a spacer layer arranged on the pixel-defining layer and including a 2-1 st pixel opening corresponding to the 1-1 st pixel opening and exposing the portion of the first pixel electrode, and a first color filter layer arranged on the first pixel electrode and selectively transmitting light of a first wavelength range. In a plan view, a first length between an edge of the 1-1 st pixel opening and an edge of the 2-1 st pixel opening in a direction corresponds to the first wavelength range.

Inventors

  • Yeongho LEE
  • Haseok Jeon
  • Jihyun Kim
  • Junhee Lee
  • Choongyoul Im
  • Hyunduck CHO
  • Kookhyun CHOI
  • Seongyong HWANG

Assignees

  • SAMSUNG DISPLAY CO., LTD.

Dates

Publication Date
20260512
Application Date
20230802
Priority Date
20221027

Claims (20)

  1. 1 . A display apparatus comprising: a first pixel electrode arranged on a substrate; a pixel-defining layer arranged on the substrate, covering an edge of the first pixel electrode, and including a 1-1 st pixel opening exposing a portion of the first pixel electrode; a spacer layer arranged on the pixel-defining layer and including a 2-1 st pixel opening corresponding to the 1-1 st pixel opening and exposing the portion of the first pixel electrode; and a first color filter layer arranged on the first pixel electrode and selectively transmitting light of a first wavelength range, wherein in a plan view, a first length between an edge of the 1-1 st pixel opening and an edge of the 2-1 st pixel opening in a direction corresponds to the first wavelength range.
  2. 2 . The display apparatus of claim 1 , further comprising: a second pixel electrode arranged on the substrate spaced apart from the first pixel electrode; and a second color filter layer arranged on the second pixel electrode and selectively transmitting light of a second wavelength range that is different from the first wavelength range, wherein the first pixel electrode and the second pixel electrode are arranged on a same layer, the pixel-defining layer covers an edge of the second pixel electrode and further includes a 1-2 nd pixel opening exposing a portion of the second pixel electrode, the spacer layer further includes a 2-2 nd pixel opening corresponding to the 1-2 nd pixel opening and exposing the portion of the second pixel electrode, and in a plan view, a second length between an edge of the 1-2 nd pixel opening and an edge of the 2-2 nd pixel opening in the direction corresponds to the second wavelength range.
  3. 3 . The display apparatus of claim 2 , wherein the first wavelength range is greater than the second wavelength range, and the first length is greater than the second length.
  4. 4 . The display apparatus of claim 1 , wherein the first length is in a range of about 1.5 μm to about 2.5 μm.
  5. 5 . The display apparatus of claim 1 , wherein an area of the 2-1 st pixel opening is greater than an area of the 1-1 st pixel opening, in a plan view.
  6. 6 . The display apparatus of claim 2 , wherein the spacer layer covers at least a portion of a side surface of the 1-1 st pixel opening.
  7. 7 . The display apparatus of claim 6 , wherein the edge of the 2-1 st pixel opening overlaps the side surface of the 1-1 st pixel opening, in a plan view.
  8. 8 . The display apparatus of claim 6 , wherein an area of the 2-1 st pixel opening is greater than or equal to an area of the 1-1 st pixel opening, in a plan view.
  9. 9 . The display apparatus of claim 6 , wherein a 2-1 st acute angle formed between a side surface of the 2-1 st pixel opening and an upper surface of the substrate corresponds to the first wavelength range, and a 2-2 nd acute angle formed between a side surface of the 2-2 nd pixel opening and the upper surface of the substrate corresponds to the second wavelength range.
  10. 10 . The display apparatus of claim 9 , wherein the first wavelength range is greater than the second wavelength range, and the 2-1 st acute angle is less than the 2-2 nd acute angle.
  11. 11 . The display apparatus of claim 9 , wherein the 2-1 st acute angle is in a range of about 30 degrees to about 45 degrees.
  12. 12 . The display apparatus of claim 9 , wherein a 1-1 st acute angle formed between the side surface of the 1-1 st pixel opening and the upper surface of the substrate is less than the 2-1 st acute angle.
  13. 13 . The display apparatus of claim 1 , further comprising: a thin-film encapsulation layer arranged on the first pixel electrode, the pixel-defining layer, and the spacer layer; and a light-blocking layer arranged on the thin-film encapsulation layer along an edge of the first color filter layer, having at least a portion covered by the edge of the first color filter layer, and including a 3-1 st pixel opening arranged above the 2-1 st pixel opening and exposing an upper surface of the thin-film encapsulation layer.
  14. 14 . The display apparatus of claim 13 , wherein an area of the 3-1 st pixel opening is greater than an area of the 1-1 st pixel opening, in a plan view.
  15. 15 . The display apparatus of claim 13 , wherein the edge of the 2-1 st pixel opening overlaps the light-blocking layer, in a plan view.
  16. 16 . The display apparatus of claim 13 , wherein a side surface of the 2-1 st pixel opening overlaps the light-blocking layer, in a plan view.
  17. 17 . The display apparatus of claim 13 , wherein a thickness of the spacer layer in a thickness direction of the substrate is less than or equal to about 0.4 μm.
  18. 18 . The display apparatus of claim 1 , wherein a length from an upper surface of the pixel-defining layer to an upper surface of the substrate is less than or equal to about 1 μm.
  19. 19 . The display apparatus of claim 1 , wherein a 1-1 st acute angle formed between a side surface of the 1-1 st pixel opening and an upper surface of the substrate is greater than or equal to about 70 degrees.
  20. 20 . A display apparatus comprising: a first pixel electrode arranged on a substrate; a pixel-defining layer arranged on the substrate, covering an edge of the first pixel electrode, and including a 1-1 st pixel opening exposing at least a portion of the first pixel electrode; and a spacer layer arranged on the pixel-defining layer, including a 2-1 st pixel opening corresponding to the 1-1 st pixel opening and exposing at least the portion of the first pixel electrode, and covering at least a portion of a side surface of the 1-1 st pixel opening, wherein in a plan view, an area of the 2-1 st pixel opening is greater than or equal to an area of the 1-1 st pixel opening.

Description

CROSS-REFERENCE TO RELATED APPLICATION(S) This application claims priority to and benefits of Korean Patent Application No. 10-2022-0140505 under 35 U.S.C. § 119, filed on Oct. 27, 2022, in the Korean Intellectual Property Office (KIPO), the entire contents of which are incorporated herein by reference. BACKGROUND 1. Technical Field The disclosure relates to a display apparatus for minimizing deterioration of image quality which may occur due to external light. 2. Description of the Related Art A display apparatus displays an image by receiving information about the image. When external light is irradiated to a display apparatus, a so-called rainbow phenomenon in which light is emitted with colors separating according to a wavelength may occur. The rainbow phenomenon may cause deterioration of image quality of a display apparatus, when a user uses the display apparatus in an external environment. SUMMARY The disclosure includes a display apparatus for minimizing image-quality deterioration caused by external light. However, this objective is an example and does not limit the scope of the disclosure. Additional aspects will be set forth in part in the description which follows and, in part, will be apparent from the description, or may be learned by practice of the presented embodiments of the disclosure. According to an embodiment, a display apparatus may include a first pixel electrode arranged on a substrate, a pixel-defining layer arranged on the substrate, covering an edge of the first pixel electrode, and including a 1-1st pixel opening exposing a portion of the first pixel electrode, a spacer layer arranged on the pixel-defining layer and including a 2-1st pixel opening corresponding to the 1-1st pixel opening and exposing the portion of the first pixel electrode, and a first color filter layer arranged on the first pixel electrode and selectively transmitting light of a first wavelength range. In a plan view, a first length between an edge of the 1-1st pixel opening and an edge of the 2-1st pixel opening in a direction may correspond to the first wavelength range. The display apparatus may further include a second pixel electrode arranged on the substrate spaced apart from the first pixel electrode, and a second color filter layer arranged on the second pixel electrode and selectively transmitting light of a second wavelength range that is different from the first wavelength range. The first pixel electrode and the second pixel electrode may be arranged on a same layer. The pixel-defining layer may cover an edge of the second pixel electrode and further include a 1-2nd pixel opening exposing a portion of the second pixel electrode. The spacer layer may further include a 2-2nd pixel opening corresponding to the 1-2nd pixel opening and exposing the portion of the second pixel electrode. In a plan view, a second length between an edge of the 1-2nd pixel opening and an edge of the 2-2nd pixel opening in the direction may correspond to the second wavelength range. The first wavelength range may be greater than the second wavelength range, and the first length may be greater than the second length. The first length may be in a range of about 1.5 μm to about 2.5 μm. An area of the 2-1st pixel opening may be greater than an area of the 1-1st pixel opening, in a plan view. The spacer layer may cover at least a portion of a side surface of the 1-1st pixel opening. The edge of the 2-1st pixel opening may overlap the side surface of the 1-1st pixel opening, in a plan view. An area of the 2-1st pixel opening may be greater than or equal to an area of the 1-1st pixel opening, in a plan view. A 2-1st acute angle formed between a side surface of the 2-1st pixel opening and an upper surface of the substrate may correspond to the first wavelength range, and a 2-2nd acute angle formed between a side surface of the 2-2nd pixel opening and the upper surface of the substrate may correspond to the second wavelength range. The first wavelength range may be greater than the second wavelength range, and the 2-1st acute angle may be less than the 2-2nd acute angle. The 2-1st acute angle may be in a range of about 30 degrees to about 45 degrees. A 1-1st acute angle formed between the side surface of the 1-1st pixel opening and the upper surface of the substrate may be less than the 2-1st acute angle. The display apparatus may further include a thin-film encapsulation layer arranged on the first pixel electrode, the pixel-defining layer, and the spacer layer, and a light-blocking layer arranged on the thin-film encapsulation layer along an edge of the first color filter layer, having at least a portion covered by the edge of the first color filter layer, and including a 3-1st pixel opening arranged above the 2-1st pixel opening and exposing an upper surface of the thin-film encapsulation layer. An area of the 3-1st pixel opening may be greater than an area of the 1-1st pixel opening, in a plan view. The edge of the 2-1st pixel o