TOUCH SCREEN SYSTEM AND MANUFACTURING METHOD THEREOF

• US 20120092301A1
• Filed: 10/12/2011
• Published: 04/19/2012
• Est. Priority Date: 10/13/2010
• Status: Abandoned Application

• Current Assignee: ACTS Company Limited
• Original Assignee: ACTS Company Limited
• Inventors: Park, Jong Myoung, Han, Sang Hoon, Kim, Hoy Gun, Lee, Yeon Jong
• Application Number:
  US13/271,315
• Publication Number:
  US 20120092301A1
• Time in Patent Office: Days
• US Class Current: 345/175
• 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
• CPC Class Codes: Y10T 29/4998 Combined manufacture including applying or shaping of fluent material

Abstract

There is provided a touch screen system including: a sensor module including a light emitting unit configured to generate a light signal and a photo detection sensor configured to receive the light signal; a display panel including the sensor module; a front case including a reflection area configured to reflect the light signal generated from the light emitting unit to the photo detection sensor; and a back case connected to the front case with the display panel positioned therebetween. The front case is fixed and connected to the back case and the reflection area is placed at a predetermined position on the display panel.

Claims

1. A touch screen system comprising:

a sensor module including a light emitting unit configured to generate a light signal and a photo detection sensor configured to receive the light signal;

a display panel including the sensor module;

a front case including a reflection area configured to reflect the light signal generated from the light emitting unit to the photo detection sensor; and

a back case connected to the front case with the display panel positioned therebetween,

wherein the front case is fixed and connected to the back case and the reflection area is placed at a predetermined position on the display panel.

2. The touch screen system of claim 1,

wherein the reflection area includes a penetration section where the generated light signal penetrates and a retro-reflection section where the generated light signal is retro-reflected.

3. The touch screen system of claim 2,

wherein the retro-reflection section is formed in a bead shape, a pyramid shape, or a trigonal pyramid shape.

4. The touch screen system of claim 2,

wherein the retro-reflection section includes a retro-reflection sheet, a retro-reflection material or a retro-reflection film formed in a bead shape, a pyramid shape, or a trigonal pyramid shape.

5. The touch screen system of claim 1,

wherein the light signal includes an infrared light signal and the photo detection sensor receives an infrared light in a predetermined range.

6. The touch screen system of claim 5,

wherein a wavelength in the predetermined range is about 800 nm or more.

7. A front case of a touch screen system, the front case comprising:

a reflection area configured to reflect a light signal generated from a light emitting unit of the touch screen system to a photo detection sensor,

wherein the front case is connected to a back case of the touch screen system and the reflection area is placed at a predetermined position on a display panel.

8. The front case of claim 7,

wherein the reflection area includes a retro-reflection section formed in a bead shape, a pyramid shape, or a trigonal pyramid shape.

9. The front case of claim 7,

wherein the reflection area includes a retro-reflection sheet, a retro-reflection material or a retro-reflection film formed in a bead shape, a pyramid shape, or a trigonal pyramid shape.

10. A touch screen system manufacturing method comprising:

forming a reflection area including a reflection member inside a front case; and

connecting the front case to a back case with a sensor module and a display panel positioned therebetween,

wherein the front case is fixed and connected to the back case and the reflection area is placed at a predetermined position on the display panel.

11. The touch screen system manufacturing method of claim 10,

wherein the reflection area is formed by extrusion molding when the front case is formed.

12. The touch screen system manufacturing method of claim 10,

wherein the forming a reflection area including a reflection member inside a front case includes:

forming a retro-reflection section formed in a bead shape, a pyramid shape, or a trigonal pyramid shape.

13. The touch screen system manufacturing method of claim 10,

wherein the forming a reflection area including a reflection member inside a front case includes:

attaching a retro-reflection sheet, a retro-reflection material or a retro-reflection film formed in a bead shape, a pyramid shape, or a trigonal pyramid shape to the reflection area.