Touch control display screen with a built-in electromagnet induction layer of septum array grids

• US 7,796,122 B2
• Filed: 09/27/2002
• Issued: 09/14/2010
• Est. Priority Date: 12/29/2001
• Status: Active Grant

• Current Assignee: Komate Industrial Co., Ltd., Morgan Touch Technology (HK) Co., Limited
• Original Assignee: Tai GUEN Technology Limited
• Inventors: Shih, Hsuan-Ming
• Primary Examiner(s): Mengistu; Amare
• Assistant Examiner(s): Chow; Yuk
• Application Number:
  US10/500,438
• Publication Number:
  US 20050062725A1
• Time in Patent Office: 2,909 Days
• Field of Search: 345/173, 345/174, 345/178, 345/179, 345/156, 178/18.03, 178/18.07, 178/19, 341/20, 343/867
• US Class Current: 345/173
• CPC Class Codes: G06F 3/046 by electromagnetic means

Abstract

A touch control display screen with built-in membrane antenna array lattice electromagnetic induction layer, including at least a display screen and a shell; wherein an induction layer is provided in the rear of the display screen, the output of the induction layer is connected to an induction control circuit, a display screen control circuit is also provided in the shell; the induction layer is the antenna array printed on the insulation membrane and arranged along the X, Y axes, therein the area enclosed by each lattice unit constitutes one induction cell. Because the electromagnetic induction layer is provided in the rear of the display screen and flexible membrane-type, printed electromagnetic induction array antenna is used as the identifying induction component according to the present invention, the manufacture is easy, the cost is low, and the advantage in cost-cut is prominent in comparison with the prior art when the area of the display screen is larger. The accuracy of identification is high, and the mouse information or handwriting information can be input exactly by means of brush strokes of finger strokes; as a touch screen, the display screen is covered by a protecting film to avoid the physical damage, so it has long operating life.

Claims

1. A touch control display screen with built-in membrane antenna array lattice electromagnetic induction layer, including at least a display screen and a shell;

wherein an induction layer is provided in the rear of the display screen, an output of the induction layer is connected to an induction control circuit, a display screen control circuit is also provided in the shell, wherein;

said induction layer is an antenna array formed by silver-plasm or mixture of silver-plasm and carbon-plasm which is printed on an insulation membrane and arranged along X, Y axes, therein the area enclosed by each lattice unit of the antenna array constitutes one induction cell;

said insulation membrane is made by film material;

there are two or more said induction layers, and the induction cells on respective induction layers are set to interlace each other;

a shield layer is provided after the induction layer; and

a buffering layer is further provided between the induction layer and the shield layer in order to keep a space between the induction layer and the shield layer.

2. The touch control display screen with built-in membrane antenna array lattice electromagnetic induction layer according to claim 1, wherein said induction layer is printed on two opposite surfaces of the insulation membrane, or printed on one surface of the insulation membrane, and there are two layers of the insulation membrane in which one is overlaid on the other.

3. The touch control display screen with built-in membrane antenna array lattice electromagnetic induction layer according to claim 1, the induction control circuit is mounted on a printed substrate which is separated from the induction layer, the output of the induction layer is connected to a corresponding input terminal on the printed substrate by means of pressure-connection, plug-in connection or welding-connection.

4. The touch control display screen with built-in membrane antenna array lattice electromagnetic induction layer according to claim 3, wherein said output of the induction layer is positioned between a hard sheet and the printed substrate;

the buffering layer is provided between the hard sheet and the output of the induction layer;

the hard sheet, the buffering layer and the output of the antenna array are overlaid on the printed substrate by means of the screwing-conjunction.

5. The touch control display screen with built-in membrane antenna array lattice electromagnetic induction layer according to claim 4, wherein said printed substrate is the printed substrate of the display screen control circuit in the body of the display screen.

6. The touch control display screen with built-in membrane antenna array lattice electromagnetic induction layer according to claim 4, wherein said printed substrate is the printed substrate of the display screen control circuit outside the body of the display screen, or a self contained unit.

7. The touch control display screen with built-in membrane antenna array lattice electromagnetic induction layer according to claim 1, wherein said induction control circuit is positioned outside the body of the display screen, and connected to the body of the display screen through electrical connection means;

the output of the induction layer is connected with an output interface of the induction layer by means of pressure connection, plug-in connection, or welding-connection;

an interface which matches the electrical connection means of the induction layer is provided on the control circuit.

8. The touch screen with built-in wire lattice electromagnetic induction layer according to claim 7, wherein said output interface of the induction layer and the interface of the control circuit are one of the followings:

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

9. The touch control display screen with built-in membrane antenna array lattice electromagnetic induction layer according to claim 1, a protecting layer is provided in front of said display screen.

10. The touch control display screen with built-in membrane antenna array lattice electromagnetic induction layer according to claim 1, characterized by:

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