Transflective liquid crystal display with bent electrodes

• US 20050243251A1
• Filed: 05/02/2005
• Published: 11/03/2005
• Est. Priority Date: 04/30/2004
• Status: Abandoned Application

• Current Assignee: InnoLux Corporation
• Original Assignee: Innolux Display Corporation (InnoLux Corporation)
• Inventors: Yang, Chiu-Lien, Pang, Jia-Pang, Chen, Chueh-Ju
• Application Number:
  US11/120,426
• Publication Number:
  US 20050243251A1
• Time in Patent Office: Days
• US Class Current: 349/114
• CPC Class Codes: G02F 1/133555 Transflectors
• CPC Class Codes: G02F 1/134363 for applying an electric field parallel to the substrate, i.e. in-plane switching [IPS]

Abstract

A transflective liquid crystal display (2) includes a transparent upper substrate (100), a lower substrate (200) opposite to the upper substrate, a liquid crystal layer (300) sandwiched between the two substrates, gate lines (170) and data lines (180) defining pixel units arranged in a matrix, pixel electrodes (210) and common electrodes (220) associated with one of the substrates to each pixel unit of one of the substrates, a transflective layer (250) formed at one side of one of the substrates. The pixel electrodes and the common electrodes have the same bent form, are disposed alternately, and are substantially parallel to each other. When a voltage is applied on the electrodes, an electric field in two directions is generated. Liquid crystal molecules of the liquid crystal layer are oriented in two directions in accordance with the electric field. Therefore, color shift is reduced.

Claims

1. A transflective liquid crystal display, comprising:

a transparent upper substrate;

a lower substrate opposite to the upper substrate;

a liquid crystal layer sandwiched between the two substrates;

a plurality of gate lines and data lines defining pixel units arranged in a matrix;

a plurality of pixel electrodes and a plurality of common electrodes associated with one of the substrates at each pixel unit of said one of the substrates, wherein the pixel electrodes and the common electrodes have substantially the same bent form, are disposed alternately, and are substantially parallel to each other.

2. The transflective liquid crystal display as claimed in claim 1, wherein the pixel electrodes and common electrodes have a rectilinearly bent shape.

3. The transflective liquid crystal display as claimed in claim 1, wherein the pixel electrodes and common electrodes are wave-shaped.

4. The transflective liquid crystal display as claimed in claim 1, further comprising a transflective layer formed at one side of one of the substrates.

5. The transflective liquid crystal display as claimed in claim 4, wherein the transflective layer comprises protrusions.

6. The transflective liquid crystal display as claimed in claim 4, wherein the transflective layer is at an outside of said one of the substrates.

7. The transflective liquid crystal display as claimed in claim 1, wherein each of the pixel electrodes includes a transmission electrode portion and a reflective electrode portion.

8. The transflective liquid crystal display as claimed in claim 1, wherein a shape of the data lines is similar to that of the pixel electrodes and common electrodes.

9. The transflective liquid crystal display as claimed in claim 1, further comprising a polarizer located at the inner side of one of the substrates.

10. The transflective liquid crystal display as claimed in claim 9, wherein the polarizer is an E-type polarizer.

19. The transflective liquid crystal display as claimed in claim 1, wherein liquid crystals in the liquid crystal layer are dimensioned differently.

20. The transflective liquid crystal display as claimed in claim 19, wherein the crystals located in a middle area is larger than those in a boundary area close to the substate.

11. A transflective liquid crystal display, comprising:

a transparent upper substrate;

a lower substrate opposite to the upper substrate;

a liquid crystal layer disposed between the two substrates;

a plurality of gate lines and data lines defining pixel units arranged in a matrix; and

pixel electrodes and common electrodes disposed parallel to each other at one of the substrates, each of the pixel electrodes and common electrodes being bent and comprising a first section and a second section, the first section being symmetrical to the second section.

12. The transflective liquid crystal display as claimed in claim 11, wherein the pixel electrodes and the common electrodes have a rectilinearly bent shape.

13. The transflective liquid crystal display as claimed in claim 11, wherein the pixel electrodes and common electrodes are wave-shaped.

14. The transflective liquid crystal display as claimed in claim 11, further comprising a transflective layer formed at one side of one of the substrates.

15. The transflective liquid crystal display as claimed in claim 14, wherein the transflective layer comprises protrusions.

16. The transflective liquid crystal display as claimed in claim 14, wherein the transflective layer is at an outside of said one of the substrates.

17. The transflective liquid crystal display as claimed in claim 11, wherein each of the pixel electrodes includes a transmission electrode portion and a reflective electrode portion.

18. The transflective liquid crystal display as claimed in claim 11, wherein a shape of the data lines is similar to that of the pixel electrodes and common electrodes.