IP Library › Granted Patent US 7,733,430
Granted Patent B2
US 7,733,430 · App. 11/783,219 · Granted Jun 8, 2010

LCD panel having two pixel electrodes, coupling capacitance Cx, and satisfying Cst1/Clc1 = Cst2/Clc2

Assignee: AU Optronics Corp.
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Quick Facts
Patent No.
US 7,733,430
App. No.
11/783,219
Granted
Jun 8, 2010
Kind
B2
Abstract

An LCD panel includes a pixel unit having a first and a second pixel electrodes. The method includes: providing a first and a second curing voltages V curing1 , V curing2 based on V 1 =[Cst 1 /(Cst 1 +Clc 1 )]×V curing1 and V 2 =[Cst 2 /(Cst 2 +Clc 2 )]×V curing2 , in which, V 1 =a voltage of the first pixel electrode and V 2 =a voltage of the second pixel electrode, Clc 1 =a first liquid crystal capacitor formed by the first pixel electrode, a liquid crystal layer and a first common electrode, Cst 1 =a first storage capacitor formed by a first capacitor electrode, a dielectric layer and a second common electrode, Clc 2 =a second liquid crystal capacitor formed by the second pixel electrode, the liquid crystal layer and the first common electrode, Cst 2 =a second storage capacitor formed by a second capacitor electrode, the dielectric layer and a third common electrode, and applying the first and the second curing voltages simultaneously onto the second and the third common electrodes of the pixel unit to result in a ratio of the voltage of the first pixel electrode to the voltage of the second pixel electrode ranging from 0.9 to 1.1.

Claims (13)

1. An LCD panel comprising:

a first pixel electrode, a liquid crystal layer, a first common electrode, a first capacitor electrode, a first dielectric layer, a second common electrode, a second pixel electrode, a second capacitor electrode and a third common electrode, wherein:

the first pixel electrode, the liquid crystal layer and the first common electrode form a first liquid crystal capacitor;

the first capacitor electrode, the first dielectric layer and the second common electrode form a first storage capacitor Cst 1 coupled to the first liquid crystal capacitor Clc 1 in parallel;

the second pixel electrode, the liquid crystal layer and the first common electrode form a second liquid crystal capacitor Clc 2 , and the first and second pixel electrodes being separated from each other;

the second capacitor electrode, the first dielectric layer and the third common electrode form a second storage capacitor Cst 2 coupled to the second liquid crystal capacitor Clc 2 in parallel, wherein the second common electrode and the third common electrode are separated from each other;

a coupling capacitor Cx formed by the first capacitor electrode and the second pixel electrode; and

the first liquid crystal capacitor Clc 1 , the first storage capacitor Cst 1 , the second liquid crystal capacitor Clc 2 and the second storage capacitor Cst 2 are satisfying to an equation Cst 1 /Clc 1 =Cst 2 /Clc 2 .

2. The LCD panel according to claim 1 , wherein the first and second capacitor electrodes have surface areas different from each other.

3. The LCD panel according to claim 1 , wherein the second and third common electrodes have surface areas different from each other.

4. The LCD panel according to claim 1 , wherein the first and second pixel electrodes have surface areas different from each other.

5. The LCD panel according to claim 1 , wherein the first pixel electrode has a pattern scattered from a center in such a manner to form four domains, each of the four domains of the first pixel electrode including a plurality of parallel ribs extending in a predetermined inclined direction.

6. The LCD panel according to claim 1 , wherein the second pixel electrode has a pattern scattered from a center in such a manner to form four domains, each of the four domains of the second pixel electrode including a plurality of parallel ribs extending in a predetermined inclined direction.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Apr 6, 2007
From: HUANG, YI-PAI; CHAN, TE-WEI; CHEN, YEN-TING
To: AU OPTRONICS CORP.
Reel/Frame 019205/0420 →
Priority Claims (1)
TW 95128211 A · Aug 1, 2006 · national
Continuity (1)
Related Publication 20080030636A1 · Feb 7, 2008