Liquid crystal display device and manufacturing method thereof
View Patent ↗Provided is an LCD having a liquid crystal panel including an active region serving as a display region and an outer region serving as a non-display region. The LCD includes a first substrate including an array unit and a color filter formed in the active region, an ESD (electrostatic discharge) circuit formed in the outer region, a pattern spacer formed on the ESD, a second substrate facing the first substrate, and a sealant for attaching the first and second substrates together.
1. An LCD (liquid crystal display device) having a liquid crystal panel including an active region serving as a display region and an outer region serving as a non-display region, the LCD comprising:
a first substrate including an array unit and a color filter formed in the active region;
an ESD (electrostatic discharge) circuit formed in the outer region;
a pattern spacer formed on the ESD;
a second substrate facing the first substrate; and
a sealant for attaching the first and second substrates together.
2. The LCD according to claim 1 , wherein a pattern spacer for maintaining a gap between the first and second substrates is further formed in the active region.
3. The LCD according to claim 1 , wherein the ESD comprises a plurality of TFTs (thin film transistors).
4. The LCD according to claim 1 , wherein the pattern spacer is formed on a partial surface or an entire surface of the ESD.
5. The LCD according to claim 1 , wherein the ESD is formed under the sealant.
6. The LCD according to claim 1 , wherein the ESD is formed inwardly from the sealant.
7. The LCD according to claim 1 , wherein the ESD is formed outwardly from the sealant.
8. The LCD according to claim 1 , wherein the first substrate comprises:
a gate line formed thereon in one direction;
a gate electrode formed thereon;
a gate pad formed at the outer region;
a gate insulating layer formed on the gate line;
a semiconductor layer formed on the gate insulating layer at a position corresponding to a TFT;
a data line intersected by the gate line to define a pixel region;
source and drain electrodes protruded from the semiconductor layer;
a black matrix formed on the TFT, the gate line and the data line;
a color filter formed in the pixel region;
an overcoat layer formed on the black matrix and the color filter; and
a pixel electrode formed on the overcoat layer to be connected to the drain electrode.
9. The LCD according to claim 8 , wherein an overcoat layer is further formed on the source and drain electrodes.
10. The LCD according to claim 8 , wherein a semiconductor layer is further formed beneath the data line.
11. The LCD according to claim 8 , wherein the overcoat layer is made of photo acryl or inorganic material.
12. The LCD according to claim 8 , wherein a pattern spacer is further formed on the gate pad.
13. The LCD according to claim 1 , wherein the first substrate comprises:
a color filter formed thereon;
a gate line formed thereon in one direction;
a gate electrode formed thereon;
a gate pad formed at the outer region;
a gate insulating layer formed on the gate line;
a semiconductor layer formed on the gate insulating layer at a position corresponding to a TFT;
a data line intersected by the gate line to define a pixel region;
source and drain electrodes protruded from the semiconductor layer;
a black matrix formed on the TFT, the gate line and the data line;
an overcoat layer formed on the black matrix; and
a pixel electrode formed on the overcoat layer to be connected to the drain electrode.
14. A method for manufacturing an LCD (liquid crystal display device), the method comprising:
forming an array unit, a color filter and a black matrix in a display region on a first substrate and forming an ESD (electrostatic discharge) circuit and an outer black matrix in a non-display region;
forming a pattern spacer in the display region and forming a pattern spacer on a partial surface or an entire surface of the ESD circuit;
attaching the first substrate and a second substrate facing the first substrate together using a sealant; and
forming a liquid crystal layer between the first and second substrates.
15. The method according to claim 14 , wherein the ESD comprises a plurality of TFTs (thin film transistors).
16. The method according to claim 14 , wherein the ESD is formed under the sealant.
17. The method according to claim 14 , wherein the ESD is formed inwardly from the sealant.
18. The method according to claim 14 , wherein the ESD is formed outwardly from the sealant.
19. The method according to claim 14 , wherein the forming of the first substrate comprises:
forming on a substrate a gate line, a gate pad, and a data line intersecting the gate line to define a pixel region;
forming a TFT (thin film transistor) at an intersection between the gate line and the data line, the TFT including a gate electrode and an active layer and source/drain electrodes;
forming a black matrix on the TFT, the gate line and the data line;
forming an R/G/B color filter in the pixel region; and
forming a pixel electrode on the color filter.
20. The method according to claim 14 , wherein the forming of the first substrate comprises:
forming a color filter on a substrate;
forming a TFT on the color filter in a pixel region defined by a gate line and a data line intersecting the gate line, the TFT including a gate electrode and an active layer and source/drain electrodes;
forming a black matrix on the TFT, the gate line and the data line; and
forming a pixel electrode on the pixel region.
21. The method according to claim 19 , wherein a pattern spacer is formed on the gate pad.