Display panel

Patent metadata

Field	Value
Publication number	US-10914979-B2
Application number	US-201916687560-A
Country	US
Kind code	B2
Filing date	Nov 18, 2019
Priority date	Apr 30, 2015
Publication date	Feb 9, 2021
Grant date	Feb 9, 2021

Abstract

A display panel may include the following elements: a substrate; a first-color filter, which overlaps the substrate and may include a first-color portion and a first-color part; a second-color filter, which may include a second-color portion and a second-color part; a third-color filter, which may include a third-color portion and a third-color part; a light-blocking structure, which may be positioned between the first-color part and the second-color part in a plan view of the display panel and may include the first-color portion, the second-color portion, and the third-color portion, wherein the first-color portion, the second-color portion, and the third-color portion are stacked in a direction perpendicular to the substrate.

First claim

What is claimed is:

1. A display panel comprising:
a substrate including a display area, the display area comprising a plurality of pixels, each of the pixels including a transmitting area;
a first-color filter disposed on the substrate, the first-color filter comprising a first pixel portion disposed in the transmitting area of a first pixel, and a first overlap portion;
a second-color filter disposed on the substrate, the second-color filter comprising a second pixel portion disposed in the transmitting area of a second pixel, and a second overlap portion; and
a third-color filter disposed on the substrate, the third-color filter comprising a third pixel portion disposed in the transmitting area of a third pixel, and a third overlap portion,
wherein:
the first overlap portion, the second overlap portion, and the third overlap portion are stacked in a direction perpendicular to a surface of the substrate to form a light-blocking stack structure,
the transmitting area of the first pixel has two edges respectively extending in different directions and connected to each other in a plan view, and
the light-blocking stack structure includes two stack structure portions in the plan view, wherein the two stack structure portions respectively continuously extend along the two edges of the transmitting area of the first pixel in the plan view.

2. The display panel of claim 1 , wherein the light-blocking stack structure displays a black color through subtractive mixing of colors of the first overlap portion, the second overlap portion, and the third overlap portion.

3. The display panel of claim 1 , wherein a maximum thickness of the first overlap portion is less than a maximum thickness of the first pixel portion.

4. The display panel of claim 1 , wherein:
the third overlap portion is separated from the third pixel portion.

5. The display panel of claim 1 , further comprising:
a transparent member including a colorless or white insulating material, wherein the second overlap portion is positioned between the first overlap portion and the transparent member in the direction perpendicular to the surface of the substrate.

6. The display panel of claim 5 , further comprising:
an electrode; and
a passivation layer positioned between the electrode and the transparent member and directly contacting each of the electrode and the transparent member.

7. The display panel of claim 5 , further comprising:
a spacer, wherein the transparent member is positioned between the second overlap portion and the spacer in the direction perpendicular to the surface of the substrate and is wider than the spacer in a direction parallel to the surface of the substrate.

8. The display panel of claim 5 , further comprising:
an electrode; and
a spacer directly contacting the electrode, positioned between the electrode and the substrate, spaced from the transparent member in a direction parallel to the surface of the substrate, and being narrower than the transparent member in the direction parallel to the surface of the substrate.

9. The display panel of claim 8 , wherein the first pixel portion is positioned between the spacer and the substrate.

10. The display panel of claim 8 , wherein a thickness of a combination of the spacer, a passivation layer, and the first pixel portion is greater or less than a thickness of a combination of the transparent member and the light-blocking stack structure by a margin that is in a range of 0.3 micrometer to 0.5 micrometer.

11. The display panel of claim 8 , wherein a liquid crystal layer is positioned between the electrode and one of the transparent member and the spacer in the direction perpendicular to the surface of the substrate.

12. The display panel of claim 5 , further comprising:
a common electrode overlapping the substrate; and
a shielding electrode positioned between the common electrode and the transparent member.

13. The display panel of claim 12 , further comprising:
a pixel electrode overlapping the first pixel portion, wherein the pixel electrode and the shielding electrode are disposed in a same layer as each other.

14. The display panel of claim 1 , further comprising:
a common electrode overlapping the substrate;
a shielding electrode positioned between the common electrode and the second overlap portion; and
a pixel electrode overlapping the first pixel portion, wherein the pixel electrode and the shielding electrode are disposed in a same layer as each other.

15. The display panel of claim 14 , further comprising:
a spacer positioned between the common electrode and the first pixel portion and directly contacting at least one of the common electrode and the first pixel portion.

16. The display panel of claim 1 , further comprising:
a signal line overlapping the substrate; and
a transistor electrically connected to the signal line, wherein at least one of the signal line and the transistor overlaps each of the first overlap portion, the second overlap portion, and the third overlap portion in the direction perpendicular to the surface of the substrate.

17. The display panel of claim 1 , further comprising:
a common electrode, wherein a portion of the common electrode is positioned between the second overlap portion and the third overlap portion in the direction perpendicular to the surface of the substrate.

18. The display panel of claim 17 , further comprising:
a transparent member including a colorless or white insulating material, wherein the third overlap portion is positioned between the transparent member and the portion of the common electrode in the direction perpendicular to the surface of the substrate.

19. The display panel of claim 1 , further comprising:
a passivation layer, wherein a portion of the passivation layer is positioned between the second overlap portion and the third overlap portion in the direction perpendicular to the surface of the substrate.

20. The display panel of claim 19 , further comprising:
a transparent member including a colorless or white insulating material, wherein the third overlap portion is positioned between the transparent member and the portion of the passivation layer in the direction perpendicular to the surface of the substrate.

21. The display panel of claim 1 , wherein:
the second pixel portion is positioned closer to the substrate than the second overlap portion is, and
the third overlap portion is positioned between the second overlap portion and the substrate, and directly contacts each of the first overlap portion, the second overlap portion, and the second pixel portion.

22. A display panel comprising:
a substrate including a display area, the display area comprising a plurality of pixels, each of the pixels including a transmitting area;
transistors disposed on the substrate;
a first-color filter disposed on the substrate, the first-color filter comprising a first pixel portion disposed in the transmitting area of a first pixel, and a first overlap portion connected to the first pixel portion; and
a second-color filter disposed on the substrate, the second-color filter comprising a second pixel portion disposed in the transmitting area of a second pixel, and a second overlap portion connected to the second pixel portion,
wherein:
the first overlap portion and the second overlap portion are stacked in a direction perpendicular to a surface of the display area to form a stack structure extending along a boundary between the transmitting areas

Assignees

• Samsung Display Co Ltd

Inventors

• Hwang Min Ha
• Yang Seung-Suk
• Jeong You Hyun
• Kim Joong Tae
• Lee Da Young
• Hong Kweon Sam

Classifications

• G02F1/133514 Primary

  Colour filters · CPC title

• G02F1/1368

  in which the switching element is a three-electrode device {(G02F1/136277 takes precedence)} · CPC title

• G02F1/13394

  spacers regularly patterned on the cell subtrate, e.g. walls, pillars (G02F1/133377 takes precedence) · CPC title

• G02F1/133345

  Insulating layers (G02F1/1335, G02F1/1337, G02F1/135, G02F1/136 take precedence) · CPC title

• G02F1/136222

  Colour filters incorporated in the active matrix substrate · CPC title