TOUCH PANEL SYSTEM

• US 20110141061A1
• Filed: 12/07/2010
• Published: 06/16/2011
• Est. Priority Date: 12/14/2009
• Status: Abandoned Application

• Current Assignee: Nuribom Co.
• Original Assignee: Nuribom Co.
• Inventors: LEE, Kee Wan
• Application Number:
  US12/961,822
• Publication Number:
  US 20110141061A1
• Time in Patent Office: Days
• US Class Current: 345/175
• CPC Class Codes: G06F 3/0325 using a plurality of light emitters or reflectors or a plurality of detectors forming a reference frame from which to derive the orientation of the object, e.g. by triangulation or on the basis of reference deformation in the picked up image
• CPC Class Codes: G06F 3/0428 by sensing at the edges of the touch surface the interruption of optical paths, e.g. an illumination plane, parallel to the touch surface which may be virtual sensing beam interruptions in a planar beam grid of an optical touch-screen G06F3/0421

Abstract

Provided is a touch panel system. The touch panel system includes: a light emitting module disposed on a portion other than the same plane as a screen structure and emitting light on a screen recognizing surface; and a image pickup module sensing a touch signal of the screen structure, wherein the system further includes a reflective module having at least one reflective mirror to allow the emitted by the light emitting module to be emitted onto the screen recognizing surface of the screen structure. Therefore, it is possible to implement a system of a thinner touch panel while maintaining a touch recognizing efficiency. Further, it is possible to efficiently recognize positions of two or more multi touch objects which are simultaneously inputted.

Claims

1. A touch panel system, comprising:

a light emitting module disposed on a position other than the same plane as a screen structure and emitting light on a recognizing surface; and

an image pickup module sensing a touch signal of the screen structure,

wherein the system further includes a reflective module having at least one reflective mirror to allow the light emitted by the light emitting module to be emitted onto the recognizing surface of the screen structure.

2. The system of claim 1, wherein the reflective module includes a first reflective mirror disposed on the same plane as the recognizing surface of the screen structure and a light emitted from the light emitting module is emitted onto the recognizing surface of the screen structure through the first reflective mirror.

3. The system of claim 1, wherein the reflective module includes:

a first reflective mirror disposed on the same plane as the recognizing surface of the screen structure; and

a second reflective mirror reflecting the light emitted from the light emitting module that is disposed on the bottom of the screen structure to the first reflective mirror.

4. The system of claim 1, wherein the reflective module includes:

a first reflective mirror disposed on the same plane as the recognizing surface of the screen structure; and

second and third mirrors guiding the light emitted from the light emitting module disposed on the lateral surface of the screen structure to the screen recognizing surface.

5. The system of claim 1, wherein the light emitting module includes at least two reflective mirrors disposed on the lateral surface of the screen structure so that the light emitted from the light emitting module penetrate the screen structure and the penetrated light is guided to the screen recognizing surface.

6. The system of claim 5, wherein the reflective mirror includes:

a first mirror disposed on the same plane as the recognizing surface of the screen structure; and

a fourth mirror reflecting the light to the first mirror and disposed on the same plane as the screen structure.

7. A system of touch panel, comprising:

a light emitting module emitting light onto a recognizing surface of a screen structure; and

an image pickup module sensing a touch signal of the screen structure,

wherein the image pickup module includes two camera modules and the camera modules are disposed at positions other than the same plane of the screen structure and pick up the recognizing surface of the screen structure through at least one reflective mirror.

8. A system of touch panel, comprising:

two or more light emitting modules emitting light on a recognizing surface of a screen structure; and

an image pickup module sensing a touch signal of the screen structure,

wherein a reflective surface is formed in a pickup direction of the image pickup module.

9. The system of claim 8, wherein the image pickup module includes one camera unit and the light emitting module includes two light emitting modules in a direction adjacent to the camera unit.

10. The system of claim 9, wherein the image pickup module includes two camera units and the light emitting module includes three light emitting modules in a direction adjacent to the camera unit.