Touch panel assembly and electronic device

Patent metadata

Field	Value
Publication number	US-9367155-B2
Application number	US-201314043809-A
Country	US
Kind code	B2
Filing date	Oct 1, 2013
Priority date	Oct 1, 2013
Publication date	Jun 14, 2016
Grant date	Jun 14, 2016

Abstract

A touch panel assembly including a touch panel and a flexible printed circuit board is provided. The touch panel includes a sensing area, at least one input element, a bonding area, a plurality of first connecting traces and a plurality of second connecting traces. The sensing area has a sensing array. The input element is located at a side of the sensing area. The bonding area is located between the sensing area and the input element. The first connecting traces and the second connecting traces are connected with the sensing array and the input element respectively and extend into bonding area. The flexible printed circuit board has a bonding portion. The flexible printed circuit board is attached to the bonding area through the bonding portion, and is electrically connected to the first connecting traces and the second connecting traces. An electronic device is also provided.

First claim

What is claimed is:

1. A touch panel assembly comprising:
a touch panel comprising:
a sensing area having a sensing array;
at least one input element located at a side of the sensing area;
a bonding area located between the sensing area and the input element; and
a plurality of first connecting traces connected with the sensing array respectively and extending into the bonding area;
a plurality of second connecting traces connected with the input element respectively and extending into the bonding area; and

a flexible printed circuit board having a bonding portion, wherein the flexible printed circuit board is attached to the bonding area through the bonding portion, and is electrically connected to the first connecting traces and the second connecting traces.

2. The touch panel assembly as recited in claim 1 , wherein the bonding area has a plurality of pads disposed within the bonding area and electrically connect to the corresponding first connecting traces and second connecting traces respectively, and the bonding portion of the flexible printed circuit board has a plurality of terminals correspondingly connected to the pads.

3. The touch panel assembly as recited in claim 1 , wherein the at least one input element comprises two input elements substantially arranged along a direction parallel to a side of the touch panel.

4. The touch panel assembly as recited in claim 1 , wherein the at least one input element is a virtual key, and the virtual key is connected to the bonding area through the corresponding second connecting trace.

5. The touch panel assembly as recited in claim 1 , wherein the touch panel further comprises a clearance zone, wherein the clearance zone is substantially not overlapped with the sensing area, the at least one input element, the bonding area, the first connecting traces, the second connecting traces and the bonding portion of the flexible printed circuit board.

6. The touch panel assembly as recited in claim 5 , wherein the flexible printed circuit board has a main body connected with the bonding portion, the main body is bended toward a direction opposite to an extending direction thereof and faces the bonding portion, so that an orthogonal projection of the flexible printed circuit board on the touch panel is substantially not overlapped with the clearance zone.

7. The touch panel assembly as recited in claim 5 , wherein a width of the clearance zone is greater than 0.5 mm and less than 3.0 mm, and a length of the clearance zone is greater than 30 mm and less than 100 mm.

8. An electronic device comprising:
a casing having an opening;
a display module disposed within the casing, the opening exposing a display surface of the display module; and
a touch panel assembly disposed within the casing, the touch panel assembly comprising:
a touch panel disposed on the display surface, the touch panel comprising:
a sensing area having a sensing array;
at least one input element located at a side of the sensing area;
a bonding area located between the sensing area and the input element; and
a plurality of first connecting traces connected with the sensing array respectively and extending into the bonding area;
a plurality of second connecting traces connected with the input element respectively and extending into the bonding area; and

a flexible printed circuit board having a bonding portion, wherein the flexible printed circuit board is attached to the bonding area through the bonding portion, and is electrically connected to the first connecting traces and the second connecting traces.

9. The electronic device as recited in claim 8 , wherein the bonding area has a plurality of pads disposed within the bonding area and electrically connected with the corresponding first connecting traces and second connecting traces respectively, and the bonding portion of the flexible printed circuit board has a plurality of terminals correspondingly connected to the pads.

10. The electronic device as recited in claim 8 , wherein the at least one input element comprises two input elements substantially arranged along a direction parallel to a side of the touch panel.

11. The electronic device as recited in claim 8 , wherein the flexible printed circuit board has a main body connected with the bonding portion, and the main body is bended toward a direction opposite to an extending direction thereof and faces the bonding portion, and bypassing the display module.

12. The electronic device as recited in claim 8 , wherein the at least one input element is a virtual key, and the virtual key is connected to the bonding area through the corresponding second connecting trace.

13. The electronic device as recited in claim 8 further comprising:
a transparent cover disposed on the touch panel assembly and covering the opening.

14. The electronic device as recited in claim 8 , wherein the touch panel further comprising a clearance zone, wherein the clearance zone is substantially not overlapped with the sensing area, the at least one input element, the bonding area, the first connecting traces, the second connecting traces and the bonding portion of the flexible printed circuit board.

15. The electronic device as recited in claim 8 further comprising:
an antenna disposed within the casing, wherein an orthogonal projection of the antenna on the touch panel is located between the at least one input element and the side of the touch panel.

16. The electronic device as recited in claim 8 further comprising:
an antenna disposed within the casing, wherein an orthogonal projection of the antenna on the touch panel is located between the at least one input element and the bonding area.

17. The electronic device as recited in claim 14 , wherein the flexible printed circuit board has a main body connected with the bonding portion, and the main body is bended toward a direction opposite to an extending direction thereof and faces the bonding portion, so that an orthogonal projection of the flexible printed circuit board on the touch panel is substantially not overlapped with the clearance zone.

18. The electronic device as recited in claim 14 , wherein a width of the clearance zone is greater than 0.5 mm and less than 3.0 mm, and a length of the clearance zone is greater than 30 mm and less than 100 mm.

19. The electronic device as recited in claim 14 further comprising:
an antenna disposed on the casing of the electronic device, wherein the casing has a gap, and the gap is disposed at a location corresponding to the clearance zone.

20. The electronic device as recited in claim 14 further comprising:
an antenna disposed within the casing and corresponded to the clearance zone.

Assignees

• Htc Corp

Inventors

• Wang Chi-Jer
• Chien Shih-Po
• Lo Pi-Lin

Classifications

• H04M1/0266

  for a display module assembly · CPC title

• G06F3/041 Primary

  Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means · CPC title

• G06F1/1643 Primary

  the display being associated to a digitizer, e.g. laptops that can be used as penpads (details related to the relative motion of the display enclosure with respect to the body enclosure, e.g. to move between laptop and tablet PC configuration G06F1/1615) · CPC title

• G06F3/04164

  Connections between sensors and controllers, e.g. routing lines between electrodes and connection pads · CPC title