Liquid crystal display panel with unit pixels sharing common white area

Patent metadata

Field	Value
Publication number	US-9536481-B2
Application number	US-201414338499-A
Country	US
Kind code	B2
Filing date	Jul 23, 2014
Priority date	Dec 30, 2013
Publication date	Jan 3, 2017
Grant date	Jan 3, 2017

Abstract

A liquid crystal display panel includes unit pixels including a first unit pixel and a second unit pixel, each of the first unit pixel and the second unit pixel including a first white area and first to third color areas, gate lines which extend in a first direction, cross the unit pixels and include a first gate line and a second gate line, data lines which extend in a second direction, and pixel electrodes which are electrically connected to the data lines and include first to seventh pixel electrodes, where the first to third pixel electrodes overlap the first to third color areas of the first unit pixel, respectively, the fourth to sixth pixel electrodes overlap the first to third color areas of the second unit pixel, respectively, and the seventh pixel electrode overlaps the first white areas of the first and second unit pixels.

First claim

What is claimed is:

1. A liquid crystal display panel comprising:
a plurality of unit pixels which comprises:
a first unit pixel and a second unit pixel which are adjacent to each other,
each of the first unit pixel and the second unit pixel comprising a first white area, a first color area, a second color area and a third color area different from each other;

a plurality of gate lines which extends in a first direction, crosses the plurality of unit pixels and comprises:
a first gate line and a second gate line adjacent to each other;
a plurality of data lines which extends in a second direction which crosses the first direction; and
a plurality of pixel electrodes which is electrically connected to the plurality of data lines and comprises a first pixel electrode, a second pixel electrode, a third pixel electrode, a fourth pixel electrode, a fifth pixel electrode, a sixth pixel electrode and a seventh pixel electrode,
wherein:
the first to the third pixel electrodes overlap the first to the third color areas of the first unit pixel, respectively,
the fourth to the sixth pixel electrodes overlap the first to the third color areas of the second unit pixel, respectively,
the seventh pixel electrode is disposed between the first gate line and the second gate line and overlaps the first white area of the first unit pixel and the first white area of the second unit pixel,
the second unit pixel is adjacent to the first unit pixel in the second direction,
the plurality of unit pixels further comprises a third unit pixel adjacent to the first unit pixel in the first direction and a fourth unit pixel adjacent to the third unit pixel in the second direction, and each of the third unit pixel and the fourth unit pixel comprises a first color area, a second color area and a third color area,
the first unit pixel further comprises a second white area adjacent to the first white area thereof in the first direction, and
the second white area overlaps an eighth pixel electrode which partially overlaps the second unit pixel, the third unit pixel and the fourth unit pixel, the eighth pixel electrode being adjacent to the seventh pixel electrode in the first direction.

2. The liquid crystal display panel of claim 1 , wherein the first to the third pixel electrodes are arranged along the first direction, and
wherein dispositions of the fourth to the sixth pixel electrodes are substantially symmetrical to dispositions of the first to the third pixel electrodes with respect to the seventh pixel electrode.

3. The liquid crystal display panel of claim 1 , wherein a second size of the seventh pixel electrode is substantially greater than a first size of one of the first pixel electrode, the second pixel electrode and the third pixel electrode.

4. The liquid crystal display panel of claim 3 , wherein the second size is greater than two times the first size and less than three times the first size.

5. The liquid crystal display panel of claim 1 , wherein a plurality of slits tilted from the first direction and the second direction is defined in the plurality of pixel electrodes, respectively, and
wherein a first width of each of the plurality of slits of one of the first pixel electrode, the second pixel electrode and the third pixel electrode is substantially equal to or less than a second width of each of the plurality of slits of the seventh pixel electrode.

6. The liquid crystal display panel of claim 1 , wherein the first to the third color areas of the first unit pixel is disposed at a first side of the first gate line, and the first white area of the first unit pixel is disposed at a second side of the first gate line opposite to the first side of the first gate line, and
wherein the first to the third color areas of the second unit pixel is disposed at a first side of the second gate line, and the first white area of the second unit pixel is disposed at a second side of the second gate line opposite to the first side of the second gate line.

7. The liquid crystal display panel of claim 1 , wherein the seventh pixel electrode is electrically connected to the first gate line.

8. The liquid crystal display panel of claim 1 , wherein
the seventh pixel electrode is electrically connected to the second gate line, and
the first gate line and the second gate line are configured to receive synchronized gate signals.

9. The liquid crystal display panel of claim 1 , wherein the plurality of data lines comprises:
a first data line electrically connected to the first pixel electrode and the fourth pixel electrode;
a second data line electrically connected to the second pixel electrode and the fifth pixel electrode;
a third data line electrically connected to the third pixel electrode and the sixth pixel electrode; and
a fourth data line electrically connected to the seventh pixel electrode.

10. The liquid crystal display panel of claim 9 , wherein at least one of the first data line, the second data line, the third data line and the fourth data line is disposed between two pixel electrodes among the first pixel electrode, the second pixel electrode and the third pixel electrode.

11. The liquid crystal display panel of claim 9 , wherein the second unit pixel is adjacent to the first unit pixel in the second direction, and
wherein a seventh data voltage applied to the seventh pixel electrode via the fourth data line is determined based on first to sixth data voltages respectively applied to the first to the sixth pixel electrodes.

12. The liquid crystal display panel of claim 11 , wherein the seventh data voltage is one of a minimum value, a maximum value and an average value among the first to the sixth data voltages.

13. The liquid crystal display panel of claim 1 , wherein the plurality of pixel electrodes further comprises:
a ninth pixel electrode, a tenth pixel electrode and an eleventh pixel electrode overlapping the first color area, the second color area and the third color area of the third unit pixel respectively; and
a twelfth pixel electrode, a thirteenth pixel electrode and a fourteenth pixel electrode overlapping the first color area, the second color area and the third color area of the fourth unit pixel respectively, and
wherein an eighth data voltage applied to the eighth pixel electrode is one of a minimum value, a maximum value and an average value among first to sixth data voltages respectively applied to the first to the sixth pixel electrodes and ninth to fourteenth data voltages respectively applied to the ninth to the fourteenth pixel electrodes.

14. The liquid crystal display panel of claim 1 , further comprising:
a light blocking pattern overlapping the plurality of gate lines and the plurality of data lines, and
a plurality of opening areas defined in the light blocking pattern.

15. The liquid crystal display panel of claim 14 , wherein the light blocking pattern comprises:
a plurality of first opening areas respectively overlapping the first color areas, the second color areas and the third color areas of the first and the second unit pixels; and
a second opening area overlapping the first white areas of the first and the second unit pixels, and
wherein the second opening area is disposed between the first gate line and the second gate line.

16. The liquid crystal display panel of claim 15 , wherein a first area of the first opening area overlapping the first unit pixel is substantially the same as a second area of the second opening area.

17. A liquid crystal display panel comprising:
a plurality of unit pixels which comprises:
a fir

Assignees

• Samsung Display Co Ltd

Inventors

• Yoon Seon-Tae
• Park Jae-Byung
• Park Hae-Il
• Lee Kwang-Keun
• Lee Baek-Hee
• Sim Mun-Ki
• Lee Jun-Han

Classifications

• G09G2300/0452

  Details of colour pixel setup, e.g. pixel composed of a red, a blue and two green components · CPC title

• G09G2300/0465

  Improved aperture ratio, e.g. by size reduction of the pixel circuit, e.g. for improving the pixel density or the maximum displayable luminance or brightness · CPC title

• G09G3/36 Primary

  using liquid crystals · CPC title

• G02F1/1362 Primary

  Active matrix addressed cells {(G02F1/134336, G02F1/134363 take precedence)} · CPC title

• G02F1/1343

  Electrodes {(reflective electrodes G02F1/133553)} · CPC title