Liquid crystal display

Patent metadata

Field	Value
Publication number	US-9715151-B2
Application number	US-201113241477-A
Country	US
Kind code	B2
Filing date	Sep 23, 2011
Priority date	Jan 28, 2011
Publication date	Jul 25, 2017
Grant date	Jul 25, 2017

Abstract

A liquid crystal display includes: first and second substrate opposite to each other; data lines on the first substrate which transmits a first voltage; a voltage transmitting line on the first substrate which transmits a second voltage; and first and second pixel electrodes on the first substrate and spaced apart from each other, where one of the first and second pixel electrodes is applied with the first voltage through the data lines, the other of the first and second pixel electrodes is applied with the second voltage through the voltage transmitting line, each of the first and second pixel electrodes includes a stem and branches electrodes extending from the stem, the branches of the first pixel electrode and the branches of the second pixel electrode are alternately disposed, and the stems of the first and second pixel electrodes overlap at least a portion of the voltage transmitting line.

First claim

What is claimed is:

1. A liquid crystal display comprising:
a first substrate;
a second substrate disposed opposite to the first substrate;
a liquid crystal layer interposed between the first substrate and the second substrate and including liquid crystal molecules;
a gate line disposed on the first substrate, wherein the gate line transmits a gate signal;
a plurality of data lines disposed on the first substrate, wherein the plurality of data lines transmits a first voltage;
a voltage transmitting line disposed on the first substrate, wherein the voltage transmitting line transmits a second voltage having one of two different voltages;
a plurality of pixels respectively comprising a first pixel electrode disposed on the first substrate; and a second pixel electrode disposed on the first substrate and spaced apart from the first pixel electrode,
wherein one of the first pixel electrode and the second pixel electrode is applied with the first voltage through one of the plurality of data lines, the other of the first pixel electrode and the second pixel electrode is applied with a second voltage through the voltage transmitting line,
wherein each of the first pixel electrode and the second pixel electrode includes a stem and a plurality of branches extending from the stem, and the branches of the first pixel electrode and the branches of the second pixel electrode are alternately disposed, and
the plurality of pixels includes a first pixel and a second pixel neighboring each other,
a data line of the plurality of data lines is disposed between the first pixel and the second pixel,
the stems of the first pixel electrode and the second pixel electrode of the first pixel include a first portion overlapping the data line disposed between the first pixel and the second pixel,
the stems of the first pixel electrode and the second pixel electrode of the second pixel include a second portion overlapping the data line disposed between the first pixel and the second pixel,
the first portion and the second portion are applied with the first voltage and are disposed opposite to each other with respect to the data line disposed between the first pixel and the second pixel, and
the voltage transmitting line is connected to three contiguous pixels of the plurality of pixels connected to the gate line.

2. The liquid crystal display of claim 1 , wherein
the stems of the first pixel electrode and the second pixel electrode of the first pixel include a third portion overlapping the data line disposed between the first pixel and the second pixel,
the stems of the first pixel electrode and the second pixel electrode of the second pixel include a fourth portion overlapping the data line disposed between the first pixel and the second pixel, and
the third portion and the fourth portion are applied with the second voltage and are disposed opposite to each other with respect to the data line disposed between the first pixel and the second pixel.

3. The liquid crystal display of claim 2 , wherein
wherein the stems of the first pixel electrode and the second pixel electrode overlap at least a portion of the voltage transmitting line.

4. The liquid crystal display of claim 3 , wherein
the stems of the first pixel electrode and the second pixel electrode cover at least two thirds of the voltage transmitting line.

5. The liquid crystal display of claim 4 , further comprising:
a first region including a first interval between the branches of the first pixel electrode and adjacent branches of the second pixel electrode; and
a second region including a second interval between the branches of the first pixel electrode and the adjacent branches of the second pixel electrode,
wherein the first interval is greater than the second interval, and
wherein the first region includes a region where the stems of the first and second pixel electrodes are not disposed at an edge of a pixel area.

6. The liquid crystal display of claim 5 , wherein
the liquid crystal molecules of the liquid crystal layer are substantially vertically aligned when no electric field is applied to the liquid crystal layer.

7. The liquid crystal display of claim 6 , wherein
the first pixel electrode and the second pixel electrode are applied with voltages having different polarities.

8. The liquid crystal display of claim 7 , further comprising:
an extension region including a third interval between the branches of the first pixel electrode and the adjacent branches of the second pixel electrode, wherein the third interval is greater than the first interval in the first region.

9. The liquid crystal display of claim 1 , wherein
wherein the stems of the first pixel electrode and the second pixel electrode overlap at least a portion of the voltage transmitting line.

10. The liquid crystal display of claim 9 , wherein
the stems of the first pixel electrode and the second pixel electrode cover at least two thirds of the voltage transmitting line.

11. The liquid crystal display of claim 10 , further comprising:
a first region including a first interval between the branches of the first pixel electrode and adjacent branches of the second pixel electrode; and
a second region including a second interval between the branches of the first pixel electrode and the adjacent branches of the second pixel electrode,
wherein the first interval is greater than the second interval, and
wherein the first region includes a region where the stems of the first pixel electrode and the second pixel electrode are not disposed at an edge of a pixel area.

12. The liquid crystal display of claim 11 , wherein the liquid crystal molecules of the liquid crystal layer are substantially vertically aligned when no electric field is applied to the liquid crystal layer.

13. The liquid crystal display of claim 12 , wherein
the first pixel electrode and the second pixel electrode are applied with voltages having different polarities.

14. The liquid crystal display of claim 13 , further comprising:
an extension region including a third interval between the branches of the first pixel electrode and the adjacent branches of the second pixel electrode, wherein the third interval is greater than the first interval in the first region.

15. The liquid crystal display of claim 1 , further comprising:
a first region including a first interval between the branches of the first pixel electrode and adjacent branches of the second pixel electrode; and
a second region including a second interval between the branches of the first pixel electrode and the adjacent branches of the second pixel electrode,
wherein the first interval is greater than the second interval, and
the first region includes a region where the stems of the first pixel electrode and the second pixel electrode are not disposed at an edge of a pixel area.

16. The liquid crystal display of claim 15 , wherein
the liquid crystal molecules of the liquid crystal layer are substantially vertically aligned when no electric field is applied to the liquid crystal layer.

17. The liquid crystal display of claim 16 , wherein
the first pixel electrode and the second pixel electrode are applied with voltages having different polarities.

18. The liquid crystal display of claim 17 , further comprising:
an extension region including a third interval between the branches of the first pixel electrode and the adjacent branches of the second pixel electrode, wherein the third interval is greater than the first interval in the first region.

19. Th

Assignees

• Jung Mee Hye
• Choi Kook Hyun
• Na Hye Seok
• Kim Dong Gyu
• Yoo Young Hoon
• Sohn Woo Sung
• Kim Sung Hoon
• Samsung Electronics Co Ltd
• Samsung Display Co Ltd

Inventors

• Jung Mee Hye
• Choi Kook Hyun
• Na Hye Seok
• Kim Dong Gyu
• Yoo Young Hoon
• Sohn Woo Sung
• Kim Sung Hoon

Classifications

• G02F1/13624

  having more than one switching element per pixel · CPC title

• G02F1/1395

  Optically compensated birefringence [OCB]- cells or PI- cells · CPC title

• G02F2201/40

  Arrangements for improving the aperture ratio · CPC title

• G02F2001/13606

  Physics · mapped topic

• G02F1/134363 Primary

  for applying an electric field parallel to the substrate, i.e. in-plane switching [IPS] · CPC title