FORCE TOUCH LIQUID CRYSTAL DISPLAY AND METHOD OF FABRICATING THE SAME

• US 20180180917A1
• Filed: 08/03/2016
• Published: 06/28/2018
• Est. Priority Date: 06/06/2016
• Status: Abandoned Application

• Current Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd. (TCL Technology Group Corp.), Wuhan China Star Optoelectronics Technology Co., Ltd. (TCL Technology Group Corp.)
• Original Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd. (TCL Technology Group Corp.), Wuhan China Star Optoelectronics Technology Co., Ltd. (TCL Technology Group Corp.)
• Inventors: LI, Man, HUANG, Yao-Li, GUO, Xingling
• Application Number:
  US15/304,517
• Publication Number:
  US 20180180917A1
• Time in Patent Office: Days
• CPC Class Codes: G02F 1/133302 Rigid substrates, e.g. inorganic substrates
• CPC Class Codes: G02F 1/13338 Input devices, e.g. touch panels
• CPC Class Codes: G02F 1/133514 Colour filters
• CPC Class Codes: G02F 1/13439 characterised by their electrical, optical, physical properties; materials therefor; method of making
• CPC Class Codes: G02F 2201/121 common or background
• CPC Class Codes: G02F 2202/28 Adhesive materials or arrangements
• CPC Class Codes: G06F 2203/04105 Pressure sensors for measuring the pressure or force exerted on the touch surface without providing the touch position
• CPC Class Codes: G06F 3/0412 Digitisers structurally integrated in a display
• CPC Class Codes: G06F 3/045 using resistive elements, e.g. a single continuous surface or two parallel surfaces put in contact

Abstract

A force touch liquid crystal display (LCD) includes: a touch panel configured to undertake a touch operation, a display module arranged on one side of the touch panel opposite to the touch panel, and a force film formed on a surface of the touch panel opposite to the display module. A method of fabricating the force touch LCD includes: forming a force film on one surface of a touch panel, and arranging the force film to face the display module, and attaching the touch panel to the display module. By using the force touch LCD, the problems that a force film is easily damaged because of backlight heat and force touch imbalance easily occurs are solved effectively and further the quality of force touch is well improved.

Claims

1. A force touch liquid crystal display (LCD), comprising:

a touch panel, configured to undertake a touch operation;

a display module, arranged on one side of the touch panel opposite to the touch panel;

and a force film, formed on a surface of the touch panel opposite to the display module.

2. The force touch LCD of claim 1, wherein the touch panel is attached to the display module through an adhesive arranged on a periphery of the touch panel, and an air layer is formed between the touch panel and the display module.

3. The force touch LCD of claim 2, wherein the display module comprises a color filter glass (CF glass), a liquid crystal layer, a common electrode, an array substrate, and a backlight module which are layered subsequently;

a pressure capacitor is formed between the force film and the common electrode;

the force film and the common electrode form two electrodes of the pressure capacitor.

4. The force touch LCD of claim 1, wherein the force film is formed on the surface of the touch panel with a technique of silk screen printing.

5. The force touch LCD of claim 1, wherein an indium tin oxide (ITO) pattern is formed on the force film on the surface of the touch panel with a technique of silk screen printing.

6. The force touch LCD of claim 1, wherein the LCD is a twisted nematic (TN) LCD, a vertical alignment (VA) LCD, or an in-plane switching (IPS) LCD.

7. The force touch LCD of claim 2, wherein the LCD is a twisted nematic (TN) LCD, a vertical alignment (VA) LCD, or an in-plane switching (IPS) LCD.

8. The force touch LCD of claim 3, wherein the LCD is a twisted nematic (TN) LCD, a vertical alignment (VA) LCD, or an in-plane switching (IPS) LCD.

9. The force touch LCD of claim 4, wherein the LCD is a twisted nematic (TN) LCD, a vertical alignment (VA) LCD, or an in-plane switching (IPS) LCD.

10. The force touch LCD of claim 5, wherein the LCD is a twisted nematic (TN) LCD, a vertical alignment (VA) LCD, or an in-plane switching (IPS) LCD.

11. A method of fabricating a force touch liquid crystal display (LCD), comprising steps of:

forming a force film on one surface of a touch panel;

arranging the force film to face the display module, and attaching the touch panel to the display module.

12. The method of claim 11, wherein the display module comprises a color filter glass (CF glass), a liquid crystal layer, a common electrode, an array substrate, and a backlight module which are layered subsequently;

a pressure capacitor is formed between the force film and the common electrode;

the force film and the common electrode form two electrodes of the pressure capacitor.

13. The method of claim 11, wherein the touch panel is attached to the display module through an adhesive arranged on a periphery of the touch panel, and an air layer is formed between the touch panel and the display module.

14. The method of claim 12, wherein the touch panel is attached to the display module through an adhesive arranged on a periphery of the touch panel, and an air layer is formed between the touch panel and the display module.

15. The method of claim 11, wherein the force film is formed on the surface of the touch panel with a technique of silk screen printing.

16. The method of claim 12, wherein the force film is formed on the surface of the touch panel with a technique of silk screen printing.