Display apparatus and method of manufacturing the same

Patent metadata

Field	Value
Publication number	US-9768209-B2
Application number	US-201514964042-A
Country	US
Kind code	B2
Filing date	Dec 9, 2015
Priority date	May 18, 2012
Publication date	Sep 19, 2017
Grant date	Sep 19, 2017

Abstract

A display apparatus includes a base substrate, a pixel on the base substrate, and a color filter part between the base substrate and the pixel. The pixel includes a cover layer defining a TSC (Tunnel Shaped Cavity) on the base substrate, an image display part provided in the TSC, and first and second electrodes which apply an electric field to the image display part.

First claim

What is claimed is:

1. A method of manufacturing a display apparatus, the method comprising:
forming a first electrode on a base substrate;
forming a sacrificial layer extending in a first direction on the first electrode;
forming a second electrode on the sacrificial layer, the second electrode extending in a second direction crossing the first direction;
forming a cover layer on the second electrode;
wet-etching the sacrificial layer to form a cavity;
forming an image display part in the cavity; and
forming an insulating layer on the second electrode, wherein the insulating layer is configured to seal the cavity.

2. The method of claim 1 , further comprising forming a color filter part, the color filter part comprising a color filter and a black matrix.

3. The method of claim 1 , wherein the forming the second electrode comprises:
forming a conductive layer on the sacrificial layer;
forming a positive type photo-resist on the conductive layer;
exposing and developing the photo-resist to form a photo-resist pattern;
patterning the conductive layer using the photo-resist pattern as a mask; and
removing the photo-resist pattern.

4. The method of claim 3 , wherein the sacrificial layer comprises a negative type photo-resist.

5. The method of claim 4 , wherein the cover layer comprises a positive type photo-resist.

6. The method of claim 3 , further comprising soft-baking the cover layer.

7. A method of manufacturing a display apparatus, the method comprising:
forming a color filter part comprising a color filter and a black matrix;
forming a pixel on the color filter part;
forming an electrode part comprising first and second electrodes insulated from each other;
forming a sacrificial layer extending in a first direction on the electrode part;
forming a cover layer on the sacrificial layer, the cover layer extending in a second direction crossing the first direction;
wet-etching the sacrificial layer to form a cavity between the electrode part and the cover layer;
forming an image display part in the cavity; and
forming a sealing layer to cover the cover layer and to seal the cavity.

8. The method of claim 7 , wherein the sacrificial layer comprises a positive type photo-resist.

9. The method of claim 8 , wherein the cover layer comprises a negative type photo-resist.

10. The method of claim 9 , further comprising hard-baking the sealing layer.

Assignees

• Samsung Display Co Ltd

Inventors

• Kim Yeun Tae
• Kong Hyang-Shik
• Roh Namseok
• Park Hongsick
• Jeong Changoh
• Ju Jinho
• Lee Byeong-Jin
• Chae Kyungtae
• Yang Jiseong

Classifications

• G02F1/133377

  Cells with plural compartments or having plurality of liquid crystal microcells partitioned by walls, e.g. one microcell per pixel · CPC title

• G02F1/133509

  Filters, e.g. light shielding masks · CPC title

• G02F1/133512

  Light shielding layers, e.g. black matrix (G02F1/136209 takes precedence) · CPC title

• G02F2001/13793

  Physics · mapped topic

• G02F1/1341

  Filling or closing of cells · CPC title