LIQUID CRYSTAL DISPLAY DEVICE

• US 20110115739A1
• Filed: 06/30/2010
• Published: 05/19/2011
• Est. Priority Date: 11/18/2009
• Status: Abandoned Application

• Current Assignee: LG Display Co., Ltd.
• Original Assignee: LG Display Co., Ltd.
• Inventors: SONG, In Hyuk
• Application Number:
  US12/827,996
• Publication Number:
  US 20110115739A1
• Time in Patent Office: Days
• US Class Current: 345/174
• CPC Class Codes: G02F 1/133334 Electromagnetic shields
• CPC Class Codes: G02F 1/13338 Input devices, e.g. touch panels
• CPC Class Codes: G02F 1/134318 having a patterned common electrode
• CPC Class Codes: G02F 1/134363 for applying an electric field parallel to the substrate, i.e. in-plane switching [IPS]
• CPC Class Codes: G06F 2203/04107 Shielding in digitiser, i.e. guard or shielding arrangements, mostly for capacitive touchscreens, e.g. driven shields, driven grounds
• CPC Class Codes: G06F 3/041 Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
• CPC Class Codes: G06F 3/0412 Digitisers structurally integrated in a display
• CPC Class Codes: G06F 3/044 by capacitive means

Abstract

An LCD device is disclosed, which comprises first and second substrate confronting each other; a liquid crystal layer between the first and second substrates; and a transparent electrode pattern layer in a predetermined pattern on one surface of the first substrate, which is not confronting the second substrate, for prevention of static electricity and improvement of touch sensitivity, wherein the transparent electrode pattern layer is formed in a predetermined pattern on one surface of the first substrate, which enables to prevent the static electricity during the manufacturing process, and to improve the user'"'"'s touch sensitivity through the increased resistance of electrode.

Claims

1. An LCD device comprising:

first and second substrate confronting each other;

a liquid crystal layer between the first and second substrates; and

a transparent electrode pattern layer in a predetermined pattern on one surface of the first substrate, which is not confronting the second substrate, for prevention of static electricity and improvement of touch sensitivity.

2. The LCD device according to claim 1, wherein the transparent electrode pattern layer includes plural first patterns arranged at fixed intervals in a first direction.

3. The LCD device according to claim 2, wherein the first patterns are respectively connected to second patterns arranged in a second direction being different from the first direction.

4. The LCD device according to claim 2, wherein the first patterns include a region with a first width, and another region with a second width, wherein the first width is different from the second width.

5. The LCD device according to claim 1, wherein a pattern width of the transparent electrode pattern layer is 5˜

100 μ

m.

6. The LCD device according to claim 1, wherein the transparent electrode pattern layer is grounded while being connected to a ground pad on the second substrate.

7. The LCD device according to claim 6, wherein the transparent electrode pattern layer is connected to the ground pad through a conductive tape.

8. The LCD device according to claim 1, further comprising a sensing electrode for sensing a user'"'"'s touch on any one of the first and second substrates.

9. The LCD device according to claim 8, wherein pixel and common electrodes are formed in parallel on the second substrate, and the sensing electrode is formed of the common electrode on the second substrate.

10. The LCD device according to claim 8, wherein light-shielding layer and color filter layers are formed on the first substrate, and the sensing electrode is formed of the light-shielding layer on the first substrate.