Liquid crystal display and manufacturing method thereof

Patent metadata

Field	Value
Publication number	US-2016124261-A1
Application number	US-201614990946-A
Country	US
Kind code	A1
Filing date	Jan 8, 2016
Priority date	Mar 13, 2013
Publication date	May 5, 2016
Grant date	—

Abstract

A manufacturing method of a liquid crystal display includes: providing a pixel electrode on an insulation substrate; providing a sacrificial layer on the pixel electrode; providing a common electrode on the sacrificial layer; providing a photoresist layer on the common electrode; exposing a portion of the photoresist layer, common electrode and the sacrificial layer with light; developing the portion of the photoresist layer exposed with the light; etching a layer between the photoresist layer and the sacrificial layer using the developed photoresist layer as a mask to expose the portion of the sacrificial layer exposed with the light; removing the portion of the sacrificial layer exposed with the light; providing a roof layer on the insulation substrate and etching the roof layer to form a liquid crystal injection hole therein; and removing the sacrificial layer exposed through the liquid crystal injection hole to form a microcavity.

First claim

What is claimed is:

1 . A liquid crystal display comprising:
an insulation substrate; a pixel electrode disposed on the insulation substrate; a plurality of microcavities defined on the pixel electrode; a plurality of common electrodes disposed on the microcavities, respectively; a roof layer which covers the common electrodes and the microcavities and comprises a column portion; and a liquid crystal layer disposed in the microcavities, wherein adjacent microcavities are connected to each other.

2 . The liquid crystal display of claim 1 , wherein
the column portion of the roof layer extends substantially in a first direction and is disposed between the microcavities, and an empty space is defined in the column portion, and the microcavities are connected through the empty space in the column portion.

3 . The liquid crystal display of claim 2 , wherein
a liquid crystal injection hole is defined between the microcavities adjacent to each other in the first direction, and the liquid crystal injection hole is exposed by the roof layer.

4 . The liquid crystal display of claim 2 , wherein
the common electrodes adjacent to each other in a second direction, which is substantially perpendicular to the first direction, are connected to each other through the empty space in the column portion of the roof layer.

5 . The liquid crystal display of claim 4 , further comprising:
a lower insulating layer disposed between the roof layer and the common electrodes.

6 . The liquid crystal display of claim 5 , wherein
the lower insulating layer has a pattern corresponding to the common electrodes.

7 . The liquid crystal display of claim 5 , further comprising:
an additional lower insulating layer disposed between the lower insulating layer and the roof layer.

8 . The liquid crystal display of claim 4 , further comprising:
an upper insulating layer which encloses upper and side surfaces of the roof layer.

Assignees

• Samsung Display Co Ltd

Inventors

• Lim Tae Woo
• Chae Kyung Tae
• Won Sung Hwan
• Lee Seon Uk
• Lee Jun Heui

Classifications

• G02F1/1341 Primary

  Filling or closing of cells · CPC title

• G02F1/133377 Primary

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

• G02F1/133345

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

• G02F1/134309

  characterised by their geometrical arrangement · CPC title

• G02F2001/134318

  Physics · mapped topic