Liquid crystal display

Patent metadata

Field	Value
Publication number	US-2016209718-A1
Application number	US-201514856088-A
Country	US
Kind code	A1
Filing date	Sep 16, 2015
Priority date	Jan 20, 2015
Publication date	Jul 21, 2016
Grant date	—

Abstract

A liquid crystal display includes: a first substrate; a gate conductor disposed on the first substrate; a gate insulating layer disposed on the gate conductor; a semiconductor layer disposed on the gate insulating layer; data line and drain electrodes disposed on the semiconductor layer, the data line including a source electrode; and a first passivation layer disposed on the data line and the drain electrode, the first passivation layer including a first contact hole. The first contact hole has a substantially circular planar shape, and wherein a first region of the drain electrode corresponding to the first contact hole has a substantially circular planar shape.

First claim

What is claimed is:

1 . A liquid crystal display comprising:
a first substrate; a gate conductor disposed on the first substrate; a gate insulating layer disposed on the gate conductor; a semiconductor layer disposed on the gate insulating layer; a data line and a drain electrode disposed on the semiconductor layer, the data line comprising a source electrode; and a first passivation layer disposed on the data line and the drain electrode, the first passivation layer comprising a first contact hole, wherein the first contact hole has a substantially circular planar shape, and wherein a first region of the drain electrode corresponding to the first contact hole has a substantially circular planar shape.

2 . The liquid crystal display of claim 1 , wherein an area of the first region is equal to or greater than an area of the first contact hole.

3 . The liquid crystal display of claim 1 , further comprising:
a color filter disposed on the first passivation layer, the color filter comprising a first opening corresponding to the first contact hole, wherein the first opening has a substantially circular planar shape.

4 . The liquid crystal display of claim 3 , wherein an area of the first opening is greater than an area of the first contact hole.

5 . The liquid crystal display of claim 3 , further comprising:
a first electrode disposed on the color filter, the first electrode comprising a second opening corresponding to the first contact hole, wherein the second opening has a substantially circular planar shape.

6 . The liquid crystal display of claim 5 , wherein an area of the second opening is greater than an area of the first contact hole.

7 . The liquid crystal display of claim 5 , wherein an area of the second opening is greater than an area of the first opening.

8 . The liquid crystal display of claim 5 , further comprising a second passivation layer disposed on the first electrode,
wherein the first contact hole is disposed through the second passivation layer.

9 . The liquid crystal display of claim 8 , further comprising:
a second electrode disposed on the second passivation layer, wherein the second electrode and the drain electrode are connected through the first contact hole.

10 . The liquid crystal display of claim 9 , further comprising:
a light blocking member disposed on the pixel electrode; a spacer disposed on the light blocking member; and a second substrate disposed facing the first substrate.

Assignees

• Samsung Display Co Ltd

Inventors

• Lee Jeong Ho
• Kim Hyang Yul
• Song Jun Ho
• Song Jean Ho
• Lee Su Jin
• Lee Ji Eun

Classifications

• G02F1/134309

  characterised by their geometrical arrangement · CPC title

• G02F1/136209 Primary

  Light shielding layers, e.g. black matrix, incorporated in the active matrix substrate, e.g. structurally associated with the switching element · CPC title

• G02F1/1368

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

• G02F1/136286

  Wiring, e.g. gate line, drain line · CPC title

• G02F2001/136222

  Physics · mapped topic