Liquid crystal display panel, method for driving the same, and liquid crystal display apparatus using the same

• US 7,817,124 B2
• Filed: 09/19/2006
• Issued: 10/19/2010
• Est. Priority Date: 09/23/2005
• Status: Expired due to Fees

• Current Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Kim, Yeon Ju, Chang, Hak Sun, Do, Hee Wook, Yoo, Seung Hoo, Kim, Hyun Wuk, Shin, Kyoung Ju
• Primary Examiner(s): Dharia; Prabodh M
• Application Number:
  US11/524,022
• Publication Number:
  US 20070070008A1
• Time in Patent Office: 1,491 Days
• Field of Search: 345/77, 345 87-104, 345/173, 345/204, 345/208, 345/589, 345/590, 345/594, 345/690, 345/694, 345/698, 345/467, 345/469, 345/7, 345/695, 345/214, 438/30, 438/34, 257/350, 257/E21.121, 257/E21.632, 349/15, 349/37, 349/38, 349/39, 349/43, 349/48, 349/49, 349/61, 349/143, 349/147, 349/151, 349/114, 349/130, 349/152, 349/5, 348/771, 348/144, 315/169.3, 315/169.1, 313/506, 313/599, 382/261, 382/162, 382/199, 705/2, 359/292, 359/15, 358/425, 358/453, 428/1.1, 385/31, 385/147, 715/771, 715/169
• US Class Current: 345/87
• CPC Class Codes: G02F 1/134345 Subdivided pixels, e.g. for grey scale or redundancy
• CPC Class Codes: G09G 2300/0443 with several sub-pixels for the same colour in a pixel, not specifically used to display gradations G09G3/364 takes precedence
• CPC Class Codes: G09G 2300/0447 for multi-domain technique to improve the viewing angle in a liquid crystal display, such as multi-vertical alignment [MVA]
• CPC Class Codes: G09G 2320/0673 for control of gamma adjustment, e.g. selecting another gamma curve
• CPC Class Codes: G09G 3/3648 using an active matrix G09G3/367 - G09G3/3696 take precedence
• CPC Class Codes: G09G 3/3696 Generation of voltages supplied to electrode drivers

Abstract

A liquid crystal display panel includes a plurality of sub-pixels, a plurality of thin film transistors, a plurality of data lines, and a plurality of gate lines. Each of the sub-pixels have first and second gray scale regions which are split up and down and have different areas, the first and second gray scale regions of one sub-pixel having a staggered arrangement with respect to those of an adjacent sub-pixel. Thin film transistors are connected to the first and second gray scale regions so that the first gray scale regions are driven when one of gate lines is driven and the second gray scale regions are driven when another gate line is driven.

Claims

1. A liquid crystal display panel comprising:

a plurality of sub-pixels each having first and second gray scale regions which have different areas, the first and second gray scale regions of one sub-pixel having a staggered arrangement with respect to those of an adjacent sub-pixel;

a first thin film transistor to drive the first gray scale region;

a second thin film transistor to drive the second gray scale region;

a data line connected to the first and second thin film transistors, to supply first and second data signals to the first and second gray scale regions, respectively;

a first gate line to drive the first thin film transistor by a first horizontal period unit;

a second gate line to drive the second thin film transistor by a second horizontal period unit; and

a storage line disposed between the first and second gate lines and extended in parallel with the first and second gate lines,

wherein the first and second gray scale regions of each sub-pixel are arranged along a first direction parallel with the data line,

the second gray scale region of a second sub-pixel of three sub-pixels successively arranged along a second direction parallel with the first gate line is positioned between the first gray scale region of a first sub-pixel of the three sub-pixels and the first gray scale region of a third sub-pixel of the three sub-pixels, and

the first gray scale region of the second sub-pixel is positioned between the second gray scale region of the first sub-pixel and the second gray scale region of the third sub-pixel.

2. The liquid crystal display panel of claim 1, wherein the first and second gray scale regions are V-shaped and an apex of each of the V-shaped regions points in a common direction along an axis and further wherein sides have the same angle with respect to the axis.

3. The liquid crystal display panel of claim 2, wherein the first gate line overlaps apices of the first and second gray scale regions, and the second gate line overlaps a boundary between vertically adjacent sub-pixels.

4. The liquid crystal display panel of claim 3, wherein the storage line overlaps a boundary between vertically adjacent first and second gray scale regions, the first and second thin film transistors are respectively connected to sub-pixel electrodes of the first and second gray scale regions through a contact hole which overlaps the storage line or a contact hole adjacent to the storage line.

5. The liquid crystal display panel of claim 1, wherein the area of one of the first and second gray scale regions is one and half times to three times the area of rest gray scale regions.

6. The liquid crystal display panel of claim 1, wherein the first and second gray scale regions have a zigzag structure in a first direction parallel with the data line, and

each of the first and second gray scale regions is bent in a second direction parallel with the first gate line.