TOUCH PANEL

• US 20130093723A1
• Filed: 10/12/2012
• Published: 04/18/2013
• Est. Priority Date: 10/13/2011
• Status: Active Grant

• Current Assignee: TPK Holding Co., Ltd.
• Original Assignee: Wintek China Technology Ltd., Wintek Corporation
• Inventors: Huang, Ping-Wen, Lin, Su-Ming, Wu, Jui-Wen, Lu, Chia-Ching, Tsai, Di-Shing, Yu, Peng-Chih
• Granted Patent: US 10,481,706 B2
• Time in Patent Office: Days
• US Class Current: 345/174
• CPC Class Codes: G06F 3/041 Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means

Abstract

A touch panel including a touch region, a border region, a signal transmission device, and a light transmission pattern is provided. The border region is disposed on at least one side of the touch region. The signal transmission device is disposed in the border region. The light transmission pattern is disposed in the border region. The light transmission pattern partially overlaps the signal transmission device along a vertical projection direction. The signal transmission device includes at least one transparent conducting line. The transparent conducting line overlaps partial the light transmission pattern in the vertical projection direction.

Claims

1. A touch panel, comprising:

a touch region;

a border region disposed on at least one side of said touch region;

a signal transmission device disposed in said border region; and

a light transmission pattern disposed in said border region and partially overlapping said signal transmission device along a vertical projection direction;

wherein said signal transmission device comprises at least one transparent conducting line overlapping partial said light transmission pattern along said vertical projection direction.

2. The touch panel of claim 1, further comprising a plurality touch units disposed in said touch region and partial said border region, wherein said signal transmission device is electrically connected to said touch units.

3. The touch panel of claim 1, wherein said signal transmission device further comprises a plurality of opaque conducting lines, and said transparent conducting lines are electrically connected to at least one of said opaque conducting lines.

4. The touch panel of claim 3, wherein said opaque conducting lines comprise metal conducting lines, printing silver paste or printing carbon paste.

5. The touch panel of claim 1, further comprising a transparent dummy line disposed in said border region and overlapping partial said light transmission pattern along said vertical projection direction.

6. The touch panel of claim 5, wherein said transparent dummy line is electrically isolated from said signal transmission device.

7. The touch panel of claim 5, wherein said transparent conducting line and said transparent dummy line are made of a patterned transparent conducting layer.

8. The touch panel of claim 7, wherein a material of said patterned transparent conducting layer comprises indium tin oxide (ITO), indium zinc oxide (IZO) or aluminum zinc oxide (AZO).

9. The touch panel of claim 1, wherein said light transmission pattern is a function indicating pattern.

10. The touch panel of claim 1, wherein said light transmission pattern is a logo.