IP Library Granted Patent US 7,633,589
Granted Patent B2
US 7,633,589 · App. 11/387,267 · Granted Dec 15, 2009

Liquid crystal display

View Patent ↗
Loading inventors, assignments & file history…
Monitor This Case
Get email alerts when status or documents change.
Order Certified Copies
Most orders are placed with the USPTO same day — all within 24 business hours.
Order via The Patent Place →
Pre-filled with this patent's details
Quick Facts
Patent No.
US 7,633,589
App. No.
11/387,267
Granted
Dec 15, 2009
Kind
B2
Abstract

A liquid crystal display is provided. The liquid crystal display includes: a first substrate, a first electric field generating electrode which is located on the first substrate and which has a plurality of cut portions, a direction control electrode located on the first substrate and overlapping at least one of the cut portions, a second substrate facing the first substrate, a second electric field generating electrode located on the second substrate and opposite to the first electric field generating electrode. The liquid crystal display further includes a liquid crystal layer interposed between the first electric field generating electrode and the second electric field generating electrode, and a slope member located on one of the first and second substrate and having a ridge and a slope. The ridge corresponds to the direction control electrode.

Claims (34)

1. A liquid crystal display comprising:

a first substrate;

a first electric field generating electrode which is located on the first substrate and which has a plurality of cut portions;

a direction control electrode located on the first substrate and overlapping at least one of the cut portions;

a second substrate facing the first substrate;

a second electric field generating electrode located on the second substrate opposite to the first electric field generating electrode;

a liquid crystal layer interposed between the first electric field generating electrode and the second electric field generating electrode; and

at least one slope member located on the second electric field generating electrode and having a ridge and a slope,

wherein the ridge is formed along a direction toward which the direction control electrode extends.

2. The liquid crystal display of claim 1 , wherein the second electric field generating electrode has one body covering at least a portion of the second substrate.

3. The liquid crystal display of claim 1 , wherein the slope angle of the slope is in the range of about 1° to about 10°.

4. The liquid crystal display of claim 1 , wherein the at least one slope member occupies at least half of a total area of the second electric field generating electrode.

5. The liquid crystal display of claim 1 , wherein the cut portions include a first cut portion overlapping the direction control electrode and a second cut portion which does not overlap the direction control electrode.

6. The liquid crystal display of claim 5 , further comprising a storage electrode located on the first substrate, wherein the storage electrode overlaps with the second cut portion.

7. The liquid crystal display of claim 1 , further comprising:

first and second gate lines formed on the first substrate;

first and second data lines intersecting the first and second gate lines;

a first thin film transistor connected to the first gate line, the first data line, and the direction control electrode; and

a second thin film transistor connected to the second gate line, the second data line, and the first electric field generating electrode.

8. The liquid crystal display of claim 7 , wherein the second thin film transistor is turned on immediately after the first thin film transistor is turned off.

9. The liquid crystal display of claim 7 , wherein the at least one slope member and the cut portions form an angle of about 45° about the gate lines.

10. The liquid crystal display of claim 1 , further comprising a plurality of color filters formed under one of the first electric field generating electrode and the second electric field generating electrode.

11. The liquid crystal display of claim 10 , further comprising an overcoat layer formed between the second electric field generating electrode and the color filters.

12. The liquid crystal display of claim 1 , wherein the slope member has double slope angles.

13. The liquid crystal display of claim 1 , wherein the at least one slope member comprises a plurality of slope members located on the second electric field generating electrode.

14. A liquid crystal display device comprising:

a thin film transistor panel;

a first electric field generating electrode which is located on the thin film transistor panel and which has a plurality of cut portions;

a direction control electrode located on the thin film transistor panel and overlapping at least one of the cut portions;

a common electrode panel facing the thin film transistor panel;

a second electric field generating electrode located on the common electrode panel opposite to the first electric field generating electrode;

a liquid crystal layer interposed between the first electric field generating electrode and the second electric field generating electrode;

at least one slope member located on the second electric field generating electrode and having a ridge and a slope, wherein the ridge is formed along a direction toward which the direction control electrode extends; and

a backlight unit for supplying light to the liquid crystal layer.

Assignments (2)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Sep 17, 2012
From: SAMSUNG ELECTRONICS CO., LTD.
To: SAMSUNG DISPLAY CO., LTD.
Reel/Frame 029045/0860 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Mar 23, 2006
From: CHOI, NAK-CHO; SOHN, JI-WON; CHAI, CHONG-CHUL; KIM, HEE-SEOP
To: SAMSUNG ELECTRONICS CO., LTD.
Reel/Frame 017721/0986 →