Liquid crystal display apparatus

• US 7,944,528 B2
• Filed: 01/15/2008
• Issued: 05/17/2011
• Est. Priority Date: 01/25/2002
• Status: Expired due to Term

• Current Assignee: TCL China Star Optoelectronics Technology Co. Ltd. (TCL Technology Group Corp.)
• Original Assignee: Samsung Electronics Co. Ltd. (Samsung Group)
• Inventors: Jang, Young-Kyu
• Primary Examiner(s): Caley; Michael H
• Application Number:
  US12/014,420
• Publication Number:
  US 20080180612A1
• Time in Patent Office: 1,218 Days
• Field of Search: 349/110, 349/128, 349/126, 349/106
• US Class Current: 349/110
• CPC Class Codes: G02F 1/133512 Light shielding layers, e.g. black matrix G02F1/136209 takes precedence
• CPC Class Codes: G02F 1/133753 with different alignment orientations or pretilt angles on a same surface, e.g. for grey scale or improved viewing angle
• CPC Class Codes: G02F 1/133757 with different alignment orientations
• CPC Class Codes: G02F 1/133784 by rubbing

Abstract

In an LCD apparatus, a non-effective display region disposed between pixel electrodes and a light leakage region disposed on the pixel electrodes are covered by means of a light-leakage preventing layer and by overlapping color filters of a color filter substrate, thereby preventing the light from being leaked through the non-effective display region and the light leakage region. Accordingly, it is possible to prevent brightness of the light from being decreased and images displayed through the LCD apparatus from being deteriorated in quality.

Claims

1. A liquid crystal display panel comprising:

a first pixel electrode;

a second pixel electrode adjacent to the first pixel electrode,

a gate line longitudinally extended in a first direction, and being disposed between the first and second pixel electrodes;

a third pixel electrode adjacent to the first pixel electrode,

a data line longitudinally extended in a second direction which is orthogonal to the first direction, and being disposed between the first and third pixel electrodes;

a first light-leakage preventing layer overlapping with the gate line, and including a first width extending from the first pixel electrode to a center line defined between the first and second pixel electrodes, and a second width extending from an edge of the second pixel electrode to the center line defined between the first and second pixel electrodes, the first width being different from the second width; and

a second light-leakage preventing layer overlapping with the data line, and including a third width extending from an edge of the first pixel electrode to a center line defined between the first and third pixel electrodes, and fourth width extending from the third pixel electrode to the center line defined between the first and third pixel electrodes, the third width being different from the fourth width,

wherein the first light-leakage preventing layer overlaps with only one of first edge portions of the first pixel and only one of edge portions of the second pixel, the first edge portions of the first pixel and the edge portions of the second pixel being substantially parallel with the gate line, and

wherein the second light-leakage preventing layer overlaps with only one of second edge portions of the first pixel and only one of edge portions of the third pixel, the second edge portions of the first pixel and the edge portions of the third pixel being substantially parallel with the date line.

2. The liquid crystal display panel of claim 1, wherein the first width is larger than the second width.

3. The liquid crystal display panel of claim 1, wherein the fourth width is larger than the third width.

4. A liquid crystal display panel comprising:

a first pixel electrode;

a second pixel electrode adjacent to the first pixel electrode,

a gate line longitudinally extended in a first direction, and being disposed between the first and second pixel electrodes;

a third pixel electrode adjacent to the first pixel electrode,

a data line being longitudinally extended in a second direction which is orthogonal to the first direction, and disposed between the first and third pixel electrodes; and

a light blocking region including;

a first light-leakage preventing layer overlapping with the gate line, and including a first width extending from the first pixel electrode to a center line defined between the first and second pixel electrodes, and a second width extending from an edge of the second pixel electrode to the center line defined between the first and second pixel electrodes, the first width being different from the second width; and

an overlapping area excluding the first light-leakage preventing layer in which at least two of red, green and blue color filters overlap with each other, overlap with the data line, and include a third width extending from an edge of the first pixel electrode to a center line defined between the first and third pixel electrodes, and a fourth width extending from the third pixel electrode to the center line defined between the first and third pixel electrodes, the third width being different from the fourth width.

5. The liquid crystal display panel of claim 4, wherein the first width is larger than the second width.

6. The liquid crystal display panel of claim 4, wherein the fourth width is larger than the third width.

7. A liquid crystal display panel comprising:

a first pixel electrode;

a second pixel electrode adjacent to the first pixel electrode,

a gate line longitudinally extended in a first direction, and being disposed between the first and second pixel electrodes;

a third pixel electrode adjacent to the first pixel electrode,

a data line longitudinally extended in a second direction which is orthogonal to the first direction, and being disposed between the first and third pixel electrodes; and

a light blocking region including;

a second light-leakage preventing layer overlapping with the data line, and including a first width extending from an edge of the first pixel electrode to a center line defined between the first and third pixel electrodes, and a second width extending from the third pixel electrode to the center line defined between the first and third pixel electrodes, the first width being different from the second width; and

an overlapping area excluding the second light-leakage preventing layer in which at least two of red, green and blue color filters overlap with each other, overlap with the gate line, and include a third width extending from the first pixel electrode to a center line defined between the first and second pixel electrodes, and a fourth width extending from an edge of the second pixel electrode to the center line defined between the first and second pixel electrodes, the third width being different from the fourth width.

8. The LCD panel of claim 7, wherein the second width is larger than the first width.

9. The LCD panel of claim 7, wherein the third width is larger than the fourth width.