TOUCH PANEL, DISPLAY, AND ELECTRONIC DEVICE

• US 20110134075A1
• Filed: 05/21/2009
• Published: 06/09/2011
• Est. Priority Date: 08/07/2008
• Status: Abandoned Application

• Current Assignee: Sharp Kabushiki Kaisha (Hon Hai Precision Industry Co., Ltd.)
• Original Assignee: Sharp Kabushiki Kaisha (Hon Hai Precision Industry Co., Ltd.)
• Inventors: Takusa, Yasunobu
• Application Number:
  US13/056,711
• Publication Number:
  US 20110134075A1
• Time in Patent Office: Days
• US Class Current: 345/174
• 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
• CPC Class Codes: H05K 1/189 characterised by the use of a flexible or folded printed circuit H05K3/326 takes precedence
• CPC Class Codes: H05K 2201/10128 Display
• CPC Class Codes: H05K 2201/10545 Related components mounted on both sides of the PCB

Abstract

A touch panel (20a) including: a touch detection electrode (11) provided on a first substrate (10); a lead line (13a, 13b) routed from the touch detection electrode (11) along a periphery of the first substrate (10) to an area along one side edge of the first substrate (10), the lead line including a connection terminal T formed in the area; and an external line (16) provided on a second substrate (15a) secured to the area along the one side edge of the first substrate (10) and connected to the connection terminal (T), wherein the connection terminal (T) of the lead line (13a, 13b) is formed in a linear pattern along the one side edge of the first substrate (10), and the external line (16) includes a connection portion (16a) provided so as to overlap the connection terminal (T), and a line portion (16b) bending from the connection portion (16a) to extend in a direction away from the touch detection electrode (11).

Claims

1. A touch panel comprising:

a touch detection electrode provided on a rectangular first substrate so as to be capable of touch detection;

a lead line routed from the touch detection electrode along a periphery of the first substrate to an area along one side edge of the first substrate, the lead line including a connection terminal formed in the area; and

an external line provided on a second substrate secured to the area along the one side edge of the first substrate and connected to the connection terminal, wherein

a touched position on the touch detection electrode is detected via the lead line and the external line,

the connection terminal of the lead line is formed in a linear pattern along the one side edge of the first substrate, and

the external line includes a connection portion provided so as to overlap the connection terminal, and a line portion bending from the connection portion to extend in a direction away from the touch detection electrode.

2. The touch panel of claim 1, wherein

the second substrate is a flexible substrate having flexibility.

3. The touch panel of claim 1, wherein

a plurality of lead lines are provided for the touch detection electrode, and

the connection terminals of the lead lines are provided so as to be next to each other.

4. The touch panel of claim 1, wherein

a plurality of lead lines are provided for the touch detection electrode, and

the plurality of lead lines include a first lead line routed from the touch detection electrode in one of a clockwise direction and a counterclockwise direction, and a second lead line routed from the touch detection electrode in the other one of the clockwise direction and the counterclockwise direction.

5. The touch panel of claim 4, wherein

an alignment mark for aligning the first substrate and the second substrate with each other is provided between a connection terminal of the first lead line and a connection terminal of the second lead line.

6. The touch panel of claim 5, wherein

a pair of alignment marks are provided so as to be spaced apart from each other along the one side edge of the first substrate.

7. The touch panel of claim 5, wherein

a pair of alignment marks are provided so as to be spaced apart from each other in a direction perpendicular to one side edge of the first substrate.

8. The touch panel of claim 1, wherein

a touched position on the touch detection electrode is detected by a capacitive system.

9. The touch panel of claim 8, wherein

the touch detection electrode is provided in a rectangular shape entirely across an area inside a frame area defined along the periphery of the first substrate.

10. A display device comprising the touch panel of claim 1.

11. The display device of claim 10, comprising:

a display panel including a pair of substrates arranged opposing each other,

wherein the first substrate is one of the pair of substrates.

12. An electronic device comprising the display device of claim 10.

13. The electronic device of claim 12, comprising:

a cover substrate for protecting a surface,

wherein the first substrate is the cover substrate.

14. An electronic device comprising the touch panel of claim 1.

15. The electronic device of claim 14, comprising:

a cover substrate for protecting a surface,

wherein the first substrate is the cover substrate.