IP Library Granted Patent US 7,830,488
Granted Patent B2
US 7,830,488 · App. 11/675,300 · Granted Nov 9, 2010

Liquid crystal display

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Quick Facts
Patent No.
US 7,830,488
App. No.
11/675,300
Granted
Nov 9, 2010
Kind
B2
Abstract

A liquid crystal display includes: a first substrate; a gate line formed on the first substrate; a data line intersecting the gate line; a thin film transistor connected to the gate line and to the data line; a pixel electrode electrically connected to the thin firm transistor, including first and second sub-electrodes, and overlapping with a portion of the data line; a storage electrode line formed on the first substrate, disposed between the first and second sub-electrodes, and including an overlapped portion with the pixel electrode; a second substrate arranged facing the first substrate; a common electrode formed on the second substrate and including a cutout corresponding to the first and second sub-electrodes; and a liquid crystal layer formed between the common electrode and the pixel electrode.

Claims (44)

1. A liquid crystal display comprising:

a first substrate;

a gate line disposed on the first substrate;

a data line disposed on the first substrate;

a thin film transistor electrically connected to the gate line and to the data line;

a pixel electrode electrically connected to the thin film transistor, including first and second sub-electrodes, and overlapping with a portion of the data line;

a storage electrode line formed on the first substrate, disposed between the first and second sub-electrodes, and including an overlapped portion with the pixel electrode;

a second substrate arranged facing the first substrate;

a light blocking member disposed on the second substrate;

a common electrode formed on the second substrate and including a cutout corresponding to the first and second sub-electrodes; and

a liquid crystal layer formed between the common electrode and the pixel electrode,

wherein the thin film transistor includes:

a gate electrode electrically connected to the gate line;

a semiconductor overlapping with the gate electrode;

a drain electrode formed on the semiconductor; and

a source electrode arranged facing the drain electrode and electrically connected to the data line, on the semiconductor;

wherein the drain electrode includes an extending portion overlapping with the storage electrode line;

wherein the first and second sub-electrodes are connected to each other by a connecting member, and the connecting member includes a substantially vertical portion connecting the first and second sub-electrodes in a row and a protruding portion leftwardly and rightwardly protruded from the substantially vertical portion and electrically connected to the extending portion of the drain electrode.

2. The liquid crystal display of claim 1 , wherein a shape of the first and second sub-electrodes is a quadrangle shape having rounded corners.

3. The liquid crystal display of claim 1 , wherein the light blocking member corresponds to the thin film transistor.

4. The liquid crystal display of claim 1 , wherein the light blocking member corresponds to the gate line.

5. The liquid crystal display of claim 1 , further comprising a column spacer formed on the second substrate and supporting the first and second substrates.

6. The liquid crystal display of claim 5 , further comprising an assistant light blocking member corresponding to the column spacer and formed on the second substrate.

7. The liquid crystal display of claim 6 , wherein a width of the assistant light blocking member is about 8 μm to about 10 μm greater than a largest width of the column spacer.

8. The liquid crystal display of claim 5 , wherein the column spacer is disposed on a portion in which the storage electrode line and the data line are intersected.

9. The liquid crystal display of claim 1 , further comprising a plurality of color filters disposed under the common electrode.

10. The liquid crystal display of claim 1 , wherein an area of the first sub-electrode is substantially identical to an area of the second sub-electrode.

11. The liquid crystal display of claim 1 , wherein a distance between adjacent pixel electrodes is about 4 μm to about 7 μm.

12. A liquid crystal display comprising:

a thin film transistor panel;

a common electrode panel arranged facing the thin film transistor panel; and

a liquid crystal layer formed between the common electrode panel and the thin film transistor panel,

wherein the thin film transistor panel includes a first substrate, a gate line disposed on the first substrate, a data line disposed on the first substrate, a thin film transistor electrically connected to the gate line and to the data line, and a pixel electrode electrically connected to the thin film transistor and including first and second sub-electrodes,

wherein the common electrode panel includes a second substrate arranged facing the first substrate, a light blocking member disposed on the second substrate, and a common electrode disposed on the second substrate and including a cutout corresponding to the first and second sub-electrodes, and

wherein the thin film transistor includes:

a gate electrode electrically connected to the gate line;

a semiconductor overlapping with the gate electrode;

a drain electrode formed on the semiconductor; and

a source electrode arranged facing the drain electrode and electrically connected to the data line, on the semiconductor;

wherein the drain electrode includes an extending portion overlapping with the storage electrode line;

wherein the first and second sub-electrodes are connected to each other by a connecting member, and the connecting member includes a substantially vertical portion connecting the first and second sub-electrodes in a row and a protruding portion leftwardly and rightwardly protruded from the substantially vertical portion and electrically connected to the extending portion of the drain electrode.

13. The liquid crystal display of claim 12 , further comprising a storage electrode line formed on the first substrate, disposed between the first and second sub-electrodes, and including an overlapped portion with the pixel electrode.

14. The liquid crystal display of claim 12 , wherein the light blocking member corresponds to the thin film transistor.

15. The liquid crystal display of claim 12 , wherein the light blocking member corresponds to the gate line.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Sep 17, 2012
From: SAMSUNG ELECTRONICS CO., LTD.
To: SAMSUNG DISPLAY CO., LTD.
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