Display device and method of manufacturing the same

Patent metadata

Field	Value
Publication number	US-2016274428-A1
Application number	US-201514983095-A
Country	US
Kind code	A1
Filing date	Dec 29, 2015
Priority date	Mar 17, 2015
Publication date	Sep 22, 2016
Grant date	—

Abstract

A display device includes: a lower substrate including pixel regions and a light shielding area; an upper substrate opposed to the lower substrate; a liquid crystal layer between the lower substrate and the upper substrate; a gate line and a data line on the lower substrate; a thin film transistor connected to the gate line and the data line; color filters on the thin film transistor; and a pixel electrode on the color filters in the pixel region. The light shielding area may include a first light shielding area disposed with the gate line and the thin film transistor and a second light shielding area disposed with the data line; red and green color filters may be disposed in red and green pixel regions, respectively; and blue color filter may be disposed in blue pixel region and in the first light shielding area.

First claim

What is claimed is:

1 . A display device comprising:
a lower substrate comprising red, green, and blue pixel regions and a light shielding area; an upper substrate opposed to the lower substrate; a liquid crystal layer between the lower substrate and the upper substrate; a gate line and a data line on the lower substrate; a thin film transistor connected to the gate line and the data line; red, green, and blue color filters on the thin film transistor; and a pixel electrode on the red, green, and blue color filters in the pixel region, wherein the light shielding area comprises a first light shielding area disposed with the gate line and the thin film transistor and a second light shielding area disposed with the data line, wherein the red and green color filters are disposed in the red and green pixel regions, respectively, and wherein the blue color filter is disposed in the blue pixel region and in the first light shielding area.

2 . The display device of claim 1 , further comprising a light shielding member disposed on the blue color filter in the first light shielding area.

3 . The display device of claim 2 , wherein the light shielding member comprises a column spacer and a peripheral portion, that is, a part other than the column spacer.

4 . The display device of claim 2 , wherein the blue color filter disposed on the thin film transistor is directly in contact with the light shielding member.

5 . The display device of claim 2 , wherein the light shielding member disposed on the thin film transistor has a thickness greater than a thickness of the light shielding member disposed on a peripheral portion of the thin film transistor.

6 . The display device of claim 1 , further comprising a shielding electrode disposed on the red, green, and blue color filters and overlapping the data line.

7 . The display device of claim 6 , wherein the shielding electrode extends along the data line.

8 . A display device comprising:
a lower substrate comprising red, green, and blue pixel units; an upper substrate opposed to the lower substrate; a liquid crystal layer disposed between the lower substrate and the upper substrate; a gate line and a data line on the lower substrate; a thin film transistor connected to the gate line and the data line; red, green, and blue color filters on the thin film transistor; and a pixel electrode on the red, green, and blue color filters, wherein red, green, and blue pixel units respectively comprise a pixel region disposed with the pixel electrode, a first light shielding area disposed with the gate line and the thin film transistor, and a second light shielding area disposed with the data line, wherein the red and green color filters are disposed on the red and green pixel units, and wherein the blue color filter is disposed on the blue pixel unit and in at least a part of each corresponding first light shielding area of the red and green pixel units.

9 . The display device of claim 8 , wherein the at least a part of each corresponding first light shielding area of the red and green pixel units is disposed on the thin film transistor of the red and green pixel units.

10 . The display device of claim 9 , wherein the blue color filter disposed on the thin film transistor is directly in contact with the light shielding member.

11 . The display device of claim 9 , wherein the light shielding member disposed on the thin film transistor has a thickness greater than a thickness of the light shielding member disposed on a peripheral portion of the thin film transistor.

12 . The display device of claim 8 , further comprising a light shielding member disposed on the red, green, and blue color filters in the first light shielding area.

13 . The display device of claim 8 , wherein the light shielding member comprises a column spacer and a peripheral portion, that is, a part other than the column spacer.

14 . The display device of claim 8 , further comprising a shielding electrode disposed on the red, green, and blue color filters and overlapping the data line.

15 . The display device of claim 14 , wherein the shielding electrode extends along the data line.

16 . A method of manufacturing a display device comprising:
forming a thin film transistor in a light shielding area corresponding to red, green, and blue pixel regions on a lower substrate; forming red and green color filters on the thin film transistor corresponding to the red and green pixel regions; forming a blue color filter on the thin film transistor in the blue pixel region and in the light shielding area corresponding to red, green, and blue pixel regions; forming a planarization layer on the red, green, and blue color filters; and forming a light shielding member on the planarization layer in the light shielding area.

17 . The method of claim 16 , wherein the forming of the light shielding member further comprises: forming a degassing hole on the planarization layer disposed on the thin film transistor.

18 . The method of claim 16 , wherein the light shielding member disposed on the thin film transistor has a thickness greater than a thickness of the light shielding member disposed on a peripheral portion of the thin film transistor.

19 . The method of claim 16 , wherein the forming of the light shielding member comprises: simultaneously forming a column spacer and a pheripheral portion, that is, a part other than the column spacer, to each have different heights.

Assignees

• Samsung Display Co Ltd

Inventors

• Kim Swaehyun

Classifications

• H10D86/441

  Interconnections, e.g. scanning lines · CPC title

• H10D86/60

  wherein the TFTs are in active matrices · CPC title

• H10D86/021

  of multiple TFTs · CPC title

• H10D30/6723

  having light shields · CPC title

• H01L27/1259

  Electricity · mapped topic