Display apparatus and method of manufacturing the same

Patent metadata

Field	Value
Publication number	US-10473985-B2
Application number	US-201715417691-A
Country	US
Kind code	B2
Filing date	Jan 27, 2017
Priority date	Jul 27, 2016
Publication date	Nov 12, 2019
Grant date	Nov 12, 2019

Abstract

A display apparatus includes a first substrate, a color filter, a gap maintaining pattern, a column spacer, and a blocking dam. The first substrate includes a display area and a peripheral area surrounding the display area. The color filter is disposed in the display area. The gap maintaining pattern is disposed in the peripheral area in a same layer as the color filter. The column spacer is disposed on the color filter. The blocking dam is disposed in a same layer as the column spacer and overlaps the gap maintaining pattern. The difference between the gap of the first and second substrates in the display area and the gap of the first and second substrates in the peripheral area may be decreased.

First claim

What is claimed is:

1. A display apparatus comprising:
a first substrate comprising a display area and a peripheral area surrounding the display area;
a color filter disposed in the display area;
a gap maintaining pattern disposed in the peripheral area in a same layer as the color filter;
a column spacer disposed on the color filter; and
a blocking dam disposed in a same layer as the column spacer and overlapping the gap maintaining pattern;
a second substrate facing the first substrate; and
a liquid crystal layer disposed between the first substrate and the second substrate,
wherein the blocking dam makes contact with the second substrate, and
wherein the blocking dam comprises:
a first blocking dam; and
a second blocking dam adjacent to the first blocking dam and extending in a direction parallel to the first blocking dam.

2. The display apparatus of claim 1 , further comprising a sealing member disposed between the first blocking dam and the second blocking dam.

3. The display apparatus of claim 2 , wherein a distance between the first blocking dam and the second blocking dam is equal to or greater than about 2.5 mm and equal to or less than about 3.5 mm.

4. The display apparatus of claim 1 , wherein the color filter comprises:
a first color filter including a red material;
a second color filter adjacent to the first color filter and including a green material; and
a third color filter adjacent to the second color filter and including a blue material.

5. The display apparatus of claim 4 , wherein the gap maintaining pattern includes a material substantially the same as the material of the first color filter.

6. The display apparatus of claim 5 , wherein a height of the gap maintaining pattern is equal to or greater than about 1.5 um and equal to or less than about 1.8 um.

7. The display apparatus of claim 4 , wherein the gap maintaining pattern includes a material substantially the same as the material of the second color filter.

8. The display apparatus of claim 7 , wherein a height of the gap maintaining pattern is equal to or greater than about 1.5 um and equal to or less than about 1.8 um.

9. The display apparatus of claim 4 , wherein the gap maintaining pattern includes a material substantially the same as the material of the third color filter.

10. The display apparatus of claim 9 , wherein a height of the gap maintaining pattern is equal to or greater than about 1.7 um and equal to or less than about 2.3 um.

11. The display apparatus of claim 1 , further comprising:
a gate electrode disposed on the second substrate;
a source electrode overlapping the gate electrode;
a drain electrode overlapping the gate electrode and spaced apart from the source electrode; and
a pixel electrode electrically connected to the drain electrode.

12. The display apparatus of claim 1 , further comprising an overcoating layer disposed between the color filter and the column spacer.

Assignees

• Samsung Display Co Ltd

Inventors

• Kim Hyoung-Joon
• Kim Sijin
• Kim Hyangyul
• Smith Matthew
• Jung Jae Hoon
• Choi Moon-Keun
• Choi Seungjoo

Classifications

• G02F1/133516

  Methods for their manufacture, e.g. printing, electro-deposition or photolithography · CPC title

• G02F1/13394 Primary

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

• G02F1/133514

  Colour filters · CPC title

• G02F1/1339

  Gaskets; Spacers; Sealing of cells · CPC title

• G02F1/1333 Primary

  Constructional arrangements; {Manufacturing methods}(G02F1/135, G02F1/136 take precedence) · CPC title