TOUCH CONTROL DISPLAY SCREEN APPARATUS WITH A BUILT-IN ELECTROMAGNETIC INDUCTION LAYER OF WIRE LATTICE

• US 20090231299A1
• Filed: 04/30/2009
• Published: 09/17/2009
• Est. Priority Date: 09/16/2002
• Status: Abandoned Application

• Current Assignee: Tai GUEN Technology Limited
• Original Assignee: Tai GUEN Technology Limited
• Inventors: SHI, XUANMING
• Application Number:
  US12/433,578
• Publication Number:
  US 20090231299A1
• Time in Patent Office: Days
• US Class Current: 345/173
• CPC Class Codes: G06F 3/04164 Connections between sensors and controllers, e.g. routing lines between electrodes and connection pads
• CPC Class Codes: G06F 3/046 by electromagnetic means

Abstract

A touch control display screen with a built-in electromagnetic induction layer of wire lattice includes at least a display screen and a housing. An induction layer is provided behind the display screen and is connected to the induction collection control circuit by its output. A control circuit of display screen is provided in the housing. The induction layer is a wire lattice winded and interlaced separately by the wires along the X and Y axes. The wires are insulated with each other at the crossing points. The space within each lattice unit constitutes one induction cell. Because the electromagnetic induction layer is placed behind the display screen and a printed electromagnetic induction antenna array with flexible membrane is adopted as a recognition induction element, it is easy to manufacture and the cost is low.

Claims

1. A touch control display screen with a built-in electromagnetic induction layer of wire lattice, comprising:

a display screen and a housing;

one or more electromagnetic induction layer being provided behind the display screen, each said electromagnetic induction layer including a wire lattice and position reference columns provided around said electromagnetic induction layer, said wire lattice being formed by a first wire winded around said position reference columns along a first direction with longitudes across the display screen and a second wire winded around said position reference columns along a second direction orthogonal to said first direction with latitudes across the display screen, said first and second wires being interlaced separately with said longitudes crossing said latitudes to form a plurality of induction cells, and the wire lattices of respective electromagnetic induction layers being set to interlace each other;

an induction control circuit connected to an output of said wire lattice of said electromagnetic induction layer; and

a display screen control circuit being provided in the housing;

wherein said first and second wires have respective reference positions and are insulated with each other at crossing points of said first and second wires.

2. The touch control display screen with a built-in electromagnetic induction layer of wire lattice according to claim 1, wherein a shield layer is provided behind said electromagnetic induction layer in order to enhance anti-interference ability of said touch control display screen.

3. The touch control display screen with a built-in electromagnetic induction layer of wire lattice according to claim 2, wherein a buffering layer is provided between said electromagnetic induction layer and said shielding layer.

4. The touch control display screen with a built-in electromagnetic induction layer of wire lattice according to claim 3, wherein a spatial gap is kept between said shielding layer and said display screen control circuit.

5. The touch control display screen with a built-in electromagnetic induction layer of wire lattice according to claim 1, wherein said first and second wires are enameled wires that are coated with an insulated layer.

6. The touch control display screen with a built-in electromagnetic induction layer of wire lattice according to claim 1, wherein said induction control circuit and said electromagnetic induction layer are integrated by direct connection, components of said induction control circuit are directly positioned at said output of said wire lattice, and said induction control circuit is positioned in said housing.

7. The touch control display screen with a built-in electromagnetic induction layer of wire lattice according to claim 1, wherein components of said induction control circuit are mounted on a printed circuit board that is separated from said electromagnetic induction layer;

said output of said wire lattice of said electromagnetic induction layer is connected to a corresponding input terminal on said printed circuit board by means of pressure-connection, plug-in connection or welding connection.

8. The touch control display screen with a built-in electromagnetic induction layer of wire lattice according to claim 7, wherein said output of said wire lattice of said electromagnetic induction layer is positioned between a hard sheet and said printed circuit board;

a buffering layer is positioned between said hard sheet and said output of said wire lattice;

said hard sheet, said buffering layer and said output of said wire lattice are overlaid on said printed circuit board by means of screwing and pressing connection; and

said output of said wire lattice is connected to said corresponding input terminal on said printed circuit board.

9. The touch control display screen with a built-in electromagnetic induction layer of wire lattice according to claim 7, wherein said printed circuit board is a printed circuit board of said display screen control circuit located inside said housing of said touch control display screen.

10. The touch control display screen with a built-in electromagnetic induction layer of wire lattice according to claim 1, wherein said display screen control circuit is located outside said touch control display screen.

11. The touch control display screen with a built-in electromagnetic induction layer of wire lattice according to claim 1, wherein said induction control circuit is positioned outside said touch control display screen and connected to said touch control display screen through an electrical connection means;

said output of said wire lattice of said electromagnetic induction layer is connected with an output interface of said electromagnetic induction layer by means of pressure-connection, plug-in connection or welding-connection; and

an interface matching said output interface of said electromagnetic induction layer is provided on said induction control circuit.

12. The touch control display screen with a built-in electromagnetic induction layer of wire lattice according to claim 11, wherein said output interface of said electromagnetic induction layer and said interface of said induction control circuit are one of the following connection types:

pin-type connection means, flexible printed circuit means, PIN-PIN connection means, welding spot (VGA) thermal-melted connection means, ultrasonic welding device, solder-plate welding device, or puncture-type connection means.

13. The touch control display screen with a built-in electromagnetic induction layer of wire lattice according to claim 1, wherein a protective layer is provided on a front surface of said display screen.

14. The touch control display screen with a built-in electromagnetic induction layer of wire lattice according to claim 1, wherein said display screen is a plasma panel or LCD.

15. The touch control display screen with a built-in electromagnetic induction layer of wire lattice according to claim 1, wherein the induction cells formed by the wire lattices on different electromagnetic induction layers have different sizes.

16. The touch control display screen with a built-in electromagnetic induction layer of wire lattice according to claim 1, wherein said position reference column intercrosses around said electromagnetic induction layer.

17. The touch control display screen with a built-in electromagnetic induction layer of wire lattice according to claim 1, wherein said position reference column comprises a first section for winding said wires, and a second section for preventing said wires from falling off from said position reference columns.

18. The touch control display screen with a built-in electromagnetic induction layer of wire lattice according to claim 1, wherein said position reference column has an inverted conical structure.