Liquid crystal display in-plane structure and method of manufacturing the same

• US 6,421,039 B1
• Filed: 01/21/1998
• Issued: 07/16/2002
• Est. Priority Date: 01/22/1997
• Status: Expired due to Term

• Current Assignee: LG Display Co., Ltd.
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Ha, Yong Min, Moon, Beom Jin
• Primary Examiner(s): Saras, Steven
• Assistant Examiner(s): Kumar, Srilakshmi K.
• Application Number:
  US09/010,138
• Time in Patent Office: 1,637 Days
• Field of Search: 327/269, 345/96, 345/100, 359/55
• US Class Current: 345/100
• CPC Class Codes: G02F 1/134363 for applying an electric field parallel to the substrate, i.e. in-plane switching [IPS]
• CPC Class Codes: G09G 2300/0434 Flat panel display in which a field is applied parallel to the display plane
• CPC Class Codes: G09G 3/3648 using an active matrix G09G3/367 - G09G3/3696 take precedence

Abstract

A liquid crystal display device includes a substrate, a plurality of scan lines on the substrate, a plurality of data lines crossing the plurality of scan lines on the substrate, a plurality of pixel electrodes, each of the plurality of pixel electrodes formed near the crossing of a respective data line and a scan lines, a plurality of thin film transistors, wherein each of the plurality of thin film transistors includes a gate electrode connected to a corresponding scan line, a source electrode connected to a corresponding data line, and a drain electrode connected to a corresponding pixel electrode, a plurality of common electrodes each located near the corresponding pixel electrode, and a plurality of common lines connecting the corresponding common electrodes, wherein the plurality of common lines are parallel to the plurality of data lines.

Claims

1. A method for driving a liquid crystal display device with an in-plane structure mode, comprising the steps of:

applying a scan signal sequentially to a plurality of scan lines;

applying a first data signal to a plurality of odd data lines;

applying a second data signal having reversed polarity relative to the first data signal to a plurality of even data lines;

applying a first common signal to a plurality of odd common lines, wherein the plurality of odd common lines are parallel to the odd data lines; and

applying a second common signal to a plurality of even common lines, wherein the plurality of even common lines are parallel to the plurality of even data lines,

wherein during the step of applying the first common signal a signal is applied with a same cycle rate as a signal applied in the step of applying the first data signal, and during the step of applying the second common signal a signal is applied with a same cycle rate as a signal applied in the step of applying the second data signal.

2. The method of claim 1, wherein the step of applying the first and second data signals applies AC voltages to the even and odd data lines.

3. The method of claim 2, wherein the steps of applying the first and second common signals applies signals 180 degrees out of phase with each other.

4. The method of claim 1, wherein the steps of applying the first and second common signals applies AC voltages to the plurality of even and odd common lines.

5. The method of claim 1, wherein the steps of applying the first and second common signals applies signals having voltages 180 degrees out of phase with the first and second data signals, respectively.