Liquid crystal display panel and related device

• US 8,692,944 B2
• Filed: 11/06/2012
• Issued: 04/08/2014
• Est. Priority Date: 09/04/2006
• Status: Active Grant

• Current Assignee: AU Optronics Corporation
• Original Assignee: AU Optronics Corporation
• Inventors: Wu, Jeng-Fang, Huang, Yi-Pai, Chang, Ting-Jui, Liao, Wei-Lung, Lien, Shui-Chih
• Primary Examiner(s): Robinson, Mark
• Assistant Examiner(s): Tavlykaev, Robert
• Application Number:
  US13/669,460
• Publication Number:
  US 20130057513A1
• Time in Patent Office: 518 Days
• Field of Search: 349/12, 349/199, 345173-175, 345/179
• US Class Current: 349/12
• CPC Class Codes: G02F 1/13338 Input devices, e.g. touch panels
• CPC Class Codes: G02F 1/134309 characterised by their geometrical arrangement
• CPC Class Codes: G06F 3/0412 Digitisers structurally integrated in a display
• CPC Class Codes: G06F 3/047 using sets of wires, e.g. crossed wires

Abstract

A liquid crystal display panel includes a first substrate, a second substrate, a first electrode, a second electrode, a third electrode, an isolating layer, and a conductor. The first electrode is disposed between the first substrate and the isolating layer, on which the conductor is disposed. Each of the second and third electrodes is disposed on the second substrate and includes a contact surface. The second and third electrodes are not in contact with each other and are separated by a gap. The conductor is disposed in accordance with the location of the gap.

Claims

1. A liquid crystal display (LCD) device comprising:

an LCD panel comprising;

a plurality of data lines for transmitting data signals corresponding to display images;

a first gate line for transmitting first scan signals;

a second gate line disposed in parallel to the first gate line to for transmitting second scan signals;

a sensor signal line;

a first display unit electrically coupled to the first gate line and a corresponding data line among the plurality of data lines for displaying images based on the first scan signals and data signals respectively received from the first gate line and the corresponding data line;

a second display unit electrically coupled to the second gate line and the corresponding data line for displaying images based on the second scan signals and the data signals respectively received from the second gate line and the corresponding data line; and

a detecting unit comprising;

a TFT switch including;

a control end electrically coupled to the second gate line;

a first end electrically coupled to the sensor signal line; and

a second end selectively coupled to a constant bias voltage based on a touch command; and

a storage capacitor electrically coupled between the first end and the second end of the TFT switch; and

a signal processing circuit electrically coupled to the sensor signal line for outputting corresponding output signals when output signals of the sensor signal line vary.

2. The LCD device of claim 1 wherein:

the first display unit comprises;

a TFT switch having a control end electrically coupled to the first gate line and a first end coupled to the corresponding data line;

a liquid crystal capacitor electrically coupled to a second end of the TFT switch of the first display unit; and

a storage capacitor electrically coupled to the second end of the TFT switch of the first display unit and a common voltage; and

the second display unit comprises;

a TFT switch having a control end electrically coupled to the second gate line and a first end coupled to the corresponding data line;

a liquid crystal capacitor electrically coupled to a second end of the TFT switch of the second display unit; and

a storage capacitor electrically coupled to the second end of the TFT switch of the second display unit and the common voltage.

3. The LCD device of claim 2 wherein the common voltage is equal to the bias voltage.

4. The LCD device of claim 1 wherein the signal processing circuit comprises an integrating circuit.

5. The LCD device of claim 1 wherein the first gate line is disposed adjacent to the second gate line.