TOUCH SCREEN

• US 20120162099A1
• Filed: 04/08/2011
• Published: 06/28/2012
• Est. Priority Date: 12/24/2010
• Status: Abandoned Application

• Current Assignee: Samsung Electro-Mechanics Co., Ltd. (Samsung Group)
• Original Assignee: Samsung Electro-Mechanics Co., Ltd. (Samsung Group)
• Inventors: YOO, Dong Sik, LEE, Hee Bum, OH, Yong Soo, HONG, Yun Ki, LEE, Jong Young, CHAE, Kyoung Soo
• Application Number:
  US13/083,404
• Publication Number:
  US 20120162099A1
• Time in Patent Office: Days
• US Class Current: 345/173
• CPC Class Codes: G06F 3/0412 Digitisers structurally integrated in a display
• CPC Class Codes: G06F 3/04164 Connections between sensors and controllers, e.g. routing lines between electrodes and connection pads
• CPC Class Codes: G06F 3/0443 using a single layer of sensing electrodes
• CPC Class Codes: G06F 3/0445 using two or more layers of sensing electrodes, e.g. using two layers of electrodes separated by a dielectric layer
• CPC Class Codes: G06F 3/0446 using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes

Abstract

Disclosed herein is a touch screen 100 designed to control an image displayed on image display units 140 and 150 on both-sides of the touch screen. The touch screen 100 according to the present invention may overcome an obscured screen problem caused by an input device, increase production yield while reducing a process time of the touch screen 100 by simultaneously forming transparent electrodes and electrode wires on a transparent substrate and, after forming an image display unit and an active region on the transparent substrate, folding the transparent substrate, and minimize an area of a bezel region.

Claims

1. A touch screen, comprising:

a first transparent substrate that is partitioned into a first region, a second region and a first bent region present between the first region and the second region, and is folded by the first bent region to allow one side of the first region to face one side of the second region;

first transparent electrodes formed on the other side of the first region in the first transparent substrate;

first electrode wires extending from the first transparent electrodes toward the first bent region;

second transparent electrodes formed on the other side of the second region in the first transparent substrate;

second electrode wires extending from the second transparent electrodes toward the first bent region;

a first image display unit formed on one side of the first region in the first transparent substrate; and

a second image display unit formed one side of the second region in the first transparent substrate.

2. The touch screen as set forth in claim 1, further comprising:

a protective layer formed on the other side of the first transparent substrate to be applied to the first transparent electrodes and the second transparent electrodes; and

an adhesive member interposed between the first image display unit and the second image display unit.

3. The touch screen as set forth in claim 1, further comprising:

a second transparent substrate that is partitioned into a third region corresponding to the first region, a fourth region corresponding to the second region, and a second bent region corresponding to the first bent region, which is interposed between the third region and the fourth region, and is stacked over the first transparent substrate to allow one side of the second transparent substrate to face the other side of the first transparent substrate;

third transparent electrodes formed on the other side of the third region in the second transparent substrate;

third electrode wires extending from the third transparent electrodes toward the second bent region;

fourth transparent electrodes formed on the other side of the fourth region in the second transparent substrate;

fourth electrode wires extending from the fourth transparent electrodes toward the second bent region; and

an adhesive layer bonding the other side of the first transparent substrate to one side of the second transparent substrate.

4. The touch screen as set forth in claim 1, wherein the first transparent electrodes have bar patterns, rectangular patterns or diamond-shaped patterns, which are repeatedly arranged.

5. The touch screen as set forth in claim 1, wherein the second transparent electrodes have bar patterns, rectangular patterns or diamond-shaped patterns, which are repeatedly arranged.

6. The touch screen as set forth in claim 1, wherein the first transparent electrodes and the second transparent electrodes are formed of a conductive polymer.

7. The touch screen as set forth in claim 6, wherein the conductive polymer includes poly-3,4-ethylenedioxythiophene/polystyrene sulfonate (PEDOT/PSS), polyaniline, polyacetylene or polyphenylenevinylene.

8. The touch screen as set forth in claim 3, wherein the third transparent electrodes have bar patterns, rectangular patterns or diamond-shaped patterns, which are repeatedly arranged.

9. The touch screen as set forth in claim 3, wherein the fourth transparent electrodes have bar patterns, rectangular patterns or diamond-shaped patterns, which are repeatedly arranged.

10. The touch screen as set forth in claim 3, wherein the third transparent electrodes and the fourth transparent electrodes are formed of a conductive polymer.

11. The touch screen as set forth in claim 10, wherein the conductive polymer includes poly-3,4-ethylenedioxythiophene/polystyrene sulfonate (PEDOT/PSS), polyaniline, polyacetylene or polyphenylenevinylene.

12. The touch screen as set forth in claim 1, wherein an image displayed on the first image display unit corresponds to an image displayed on the second image display unit.

13. The touch screen as set forth in claim 1, wherein the first transparent electrodes and the first electrode wires are simultaneously formed, while the second transparent electrodes and the second electrode wires are simultaneously formed.

14. The touch screen as set forth in claim 1, wherein the first electrode wires and the second electrode wires extend toward the first bent region and then are gathered at one end of the first bent region.

15. The touch screen as set forth in claim 3, wherein the third transparent electrodes and the third electrode wires are simultaneously formed, while the fourth transparent electrodes and the fourth electrode wires are simultaneously formed.

16. The touch screen as set forth in claim 3, wherein the third electrodes wires and the fourth electrode wires extend toward the second bent region, and then are gathered at one end of the second bent region.