Panel display screen with touch control function

• US 20040239642A1
• Filed: 03/22/2004
• Published: 12/02/2004
• Est. Priority Date: 09/25/2001
• Status: Active Grant

• Current Assignee: Komate Industrial Co., Ltd., Morgan Touch Technology (HK) Co., Limited
• Original Assignee: Tai GUEN Technology Limited
• Inventors: Liu, Guangliang, Shi, Xuanming
• Granted Patent: US 7,268,771 B2
• Time in Patent Office: Days
• US Class Current: 345/173
• CPC Class Codes: G06F 3/046 by electromagnetic means

Abstract

A flat panel display screen having electromagnetic induction touch control function, including a flat panel display screen main unit and a touch control induction layer, the output of the touch control induction layer being connected to a recognition circuit, and touch control operation of the display screen being operated by an electromagnetic input pen. The touch control induction layer is placed behind the flat panel display screen, wherein the touch control induction layer is constituted by an electromagnetic induction generation layer and a bottom support bracket layer, wherein a base layer of the electromagnetic induction generation layer is an insulated flexible membrane, the surface of the membrane is printed with an electromagnetic induction antenna array, constituting a flexible membrane type electromagnetic induction generation layer, the output of that layer is connected to and controls the recognition circuit, and the input pen has an electromagnetic wave generation device. An insulating shielding isolating layer is provided behind the touch control induction layer, and a recognition circuit layer is provided behind the insulating shielding isolating layer. The present invention has a simple manufacturing technique, low cost, high precision, and long operating life.

Claims

1. A flat panel display screen having touch control function, including a flat panel display screen main unit and a touch control induction layer, the output of the touch control induction layer being connected to a recognition circuit, and touch control operation of the display screen being operated by an electromagnetic input pen, characterized in that:

said touch control induction layer is placed behind the flat panel display screen, wherein the touch control induction layer is constituted by an electromagnetic induction generation layer and a bottom support bracket layer, wherein a base layer of the electromagnetic induction generation layer is an insulated flexible membrane, the surface of the membrane is printed with an electromagnetic induction antenna array, constituting a flexible membrane type electromagnetic induction generation layer, the output of that layer is connected to and controls the recognition circuit, and the input pen has an electromagnetic wave generation device.

2. A flat panel display screen having touch control function as recited in claim 1, characterized in that:

the surface area of said touch control induction layer is the same as the surface area of the flat panel display screen.

3. A flat panel display screen having touch control function as recited in claim 1, characterized in that:

the surface area of said touch control induction layer is smaller than the surface area of the flat panel display screen.

4. A flat panel display screen having touch control function as recited in claim 3, characterized in that:

said touch control induction layer is placed on one side behind the flat panel display screen.

5. A flat panel display screen having touch control function as recited in claim 3, characterized in that:

said touch control induction layer is placed on one or more sides behind the flat panel display screen.

6. A flat panel display screen having touch control function as recited in claim 1, characterized in that:

the surface area of said touch control induction layer is larger than the surface area of the flat panel display screen.

7. A flat panel display screen having touch control function as recited in claim 1, characterized in that:

said flexible membrane is a film material.

8. A flat panel display screen having touch control function as recited in claim 1, characterized in that:

said electromagnetic induction generation layer is an electromagnetic induction antenna array distributed respectively following X and Y axes.

9. A flat panel display screen having touch control function as recited in claim 8, characterized in that:

said electromagnetic induction antenna array having a structure in which U-shaped antennas are arranged crosswise.

10. A flat panel display screen having touch control function as recited in claim 1, characterized in that:

said electromagnetic induction antenna array is an electromagnetic induction antenna array of silver paste or mixture of silver paste and carbon paste printed on the flexible membrane.

11. A flat panel display screen having touch control function as recited in claim 10, characterized in that:

said electromagnetic induction antenna array has a one-sided or two-sided printed circuit structure on the flexible membrane.

12. A flat panel display screen having touch control function as recited in claim 10, characterized in that:

said electromagnetic induction antenna array has one or more one-sided printed circuits superimposed.

13. A flat panel display screen having touch control function as recited in claim 1, characterized in that:

an insulating shielding isolating layer is provided behind said touch control induction layer, and a recognition circuit layer is provided behind the insulating shielding isolating layer.

14. A flat panel display screen having touch control function as recited in claim 13, characterized in that:

a spatial gap is provided between said insulating shielding isolating layer and recognition circuit layer.

15. A flat panel display screen having touch control function as recited in claim 1, characterized in that:

said display screen is a plasma display screen or a liquid crystal display screen.

16. A flat panel display screen having touch control function as recited in claim 1, characterized in that:

a protective layer is provided in front of said display screen.