IP Library Granted Patent US 8,497,961
Granted Patent B2
US 8,497,961 · App. 12/931,478 · Granted Jul 30, 2013

Liquid crystal display device and method of manufacturing the same

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Quick Facts
Patent No.
US 8,497,961
App. No.
12/931,478
Granted
Jul 30, 2013
Kind
B2
Abstract

A liquid crystal display device is provided that has improved compensation using a single type of wide view film. The liquid crystal display device includes a first substrate including a thin film transistor (TFT); a second substrate including a color filter; a first liquid crystal layer between the first and second substrates and including a plurality of pole-shaped liquid crystal molecules twisted in a first direction; a second liquid crystal layer including a plurality of disk-type liquid crystal molecules arranged to perform wide view compensation matching with the plurality of pole-shaped liquid crystal molecules; wherein a first rubbing direction of a first alignment layer and a second rubbing direction of a second alignment layer cross at a crossing angle greater than about 90 degrees and less than or equal to about 94 degrees.

Claims (15)

1. A liquid crystal display device comprising:

a first substrate comprising a thin film transistor (TFT);

a second substrate comprising a color filter;

a first liquid crystal layer between the first substrate and the second substrate and comprising a plurality of pole-shaped liquid crystal molecules twisted in a first direction;

a second liquid crystal layer on either the first substrate or the second substrate, the second liquid crystal layer comprising a plurality of disk-type liquid crystal molecules arranged to perform wide view compensation matching with the plurality of pole-shaped liquid crystal molecules;

a first alignment layer between the first liquid crystal layer and the first substrate; and

a second alignment layer between the first liquid crystal layer and the second substrate,

wherein a first rubbing direction of the first alignment layer and a second rubbing direction of the second alignment layer cross at a crossing angle greater than about 90 degrees and less than or equal to about 94 degrees.

2. The liquid crystal display device of claim 1 , wherein the crossing angle is between the first and second rubbing directions with respect to a main view direction.

3. The liquid crystal display device of claim 1 , wherein the second liquid crystal layer is designed to perform compensation matching with respect to the first liquid crystal layer twisted in a second direction opposite to the first direction at the crossing angle of 90 degrees.

4. The liquid crystal display device of claim 1 , wherein the first liquid crystal layer is a right handed (RH) liquid crystal layer in which a plurality of liquid crystal molecules are twisted clockwise from the first substrate to the second substrate.

5. The liquid crystal display device of claim 1 , further comprising: wide view films (WVFs) attached to outer surfaces of the first substrate and the second substrate,

wherein the WVFs comprise the second liquid crystal layer.

6. The liquid crystal display device of claim 1 , further comprising: a WVF attached to an outer surface of either the first substrate or the second substrate,

wherein the WVF comprises the second liquid crystal layer.

Assignments (2)
MERGER Recorded Aug 20, 2012
From: SAMSUNG MOBILE DISPLAY CO., LTD.
To: SAMSUNG DISPLAY CO., LTD.
Reel/Frame 028816/0306 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Feb 17, 2011
From: MIN, BYUNG-CHAN; MOON, HYOUNG-SIK
To: SAMSUNG MOBILE DISPLAY CO., LTD.
Reel/Frame 025828/0884 →