TOUCH PANEL

• US 20150075960A1
• Filed: 09/12/2014
• Published: 03/19/2015
• Est. Priority Date: 09/14/2013
• Status: Abandoned Application

• Current Assignee: Wintek Corporation
• Original Assignee: Wintek Corporation
• Inventors: Hsieh, Chi-Ming, Chen, Shyh-Jeng, Huang, Chun-Ming, Chen, Kuo-Hsing, Su, Chen-Hao, Chang, Chia-Lun
• Application Number:
  US14/484,292
• Publication Number:
  US 20150075960A1
• Time in Patent Office: Days
• US Class Current: 200/600
• CPC Class Codes: G06F 1/1626 with a single-body enclosure integrating a flat display, e.g. Personal Digital Assistants [PDAs]
• CPC Class Codes: G06F 1/1684 Constructional details or arrangements related to integrated I/O peripherals not covered by groups G06F1/1635 - G06F1/1675
• CPC Class Codes: G06F 1/1692 the I/O peripheral being a secondary touch screen used as control interface, e.g. virtual buttons or sliders
• CPC Class Codes: G06F 3/03547 Touch pads, in which fingers can move on a surface
• CPC Class Codes: H03K 17/962 Capacitive touch switches
• CPC Class Codes: H03K 2017/9613 using two electrodes per touch switch
• CPC Class Codes: H03K 2217/960755 Constructional details of capacitive touch and proximity switches
• CPC Class Codes: H03K 2217/96077 comprising an electrode which is floating

Abstract

A touch panel including a substrate, at least one decoration layer, and a conductive electrode structure is provided. The decoration layer is disposed on at least one side of the substrate. The decoration layer has at least one hot key area. The hot key area includes a hot key pattern area and a hot key touching area. The hot key touching area is located on at least one side of the hot key pattern area without overlapping each other. The decoration layer has at least one recess disposed in the hot key pattern area. The conductive electrode structure is disposed on the decoration layer. The conductive electrode structure is located in the hot key touching area, and an orthogonal projection of the conductive electrode structure on the substrate and an orthogonal projection of the recess on the substrate do not overlap with each other.

Claims

1. A touch panel, comprising:

a substrate;

at least one decoration layer, disposed on at least one side of the substrate and having at least one hot key area, wherein the hot key area comprises a hot key pattern area and a hot key touching area, the hot key touching area is located on at least one side of the hot key pattern area without overlapping each other, and the decoration layer has at least one recess disposed in the hot key pattern area; and

a conductive electrode structure, disposed on the decoration layer and located in the hot key touching area, wherein an orthogonal projection of the conductive electrode structure on the substrate and an orthogonal projection of the recess on the substrate do not overlap with each other.

2. The touch panel according to claim 1, wherein the decoration layer comprises at least an ink layer, at least a photoresist layer, or a combination thereof.

3. The touch panel as claimed in claim 1, wherein the conductive electrode structure is formed by one layer electrode.

4. The touch panel as claimed in claim 1, wherein the recess is a hot key pattern opening.

5. The touch panel as claimed in claim 4, wherein the conductive electrode structure comprising a first electrodes and a second electrode, and the contour of the first electrode and the contour of the second electrode are at least partially complementary to each other.

6. The touch panel as claimed in claim 5, wherein each of the first electrode and the second electrode respectively comprises a main electrode and a plurality of sub electrodes connected to the main electrode, and the plurality of sub electrodes of the first electrode and the plurality of sub electrodes of the second electrode are arranged alternately.

7. The touch panel as claimed in claim 6, wherein each of the sub electrodes of the first electrode extends toward the second electrode, and each of the sub electrodes of the second electrode extends toward the first electrode.

8. The touch panel as claimed in claim 5, wherein the conductive electrode structure further comprises a first extending electrode connected to the first electrode and extending to the peripheral area of the hot key pattern area, and a part of the contour of the first extending electrode and the contour of the hot key pattern opening are complementary to each other.

9. The touch panel as claimed in claim 5, wherein the conductive electrode structure further comprises a second extending electrode connected to the second electrode and extending to the peripheral area of the hot key pattern area, and part of the contour of the second extending electrode and the hot key pattern opening are complementary to each other.

10. The touch panel as claimed in claim 5, wherein the conductive electrode structure comprising:

a first electrode and a second electrode, surrounding the hot key pattern area, and each comprising a main electrode and a plurality of sub electrodes connected to the main electrode; and

a virtual electrode, located between the first electrode and the second electrode and located in the hot key pattern area.

11. The touch panel as claimed in claim 10, wherein the virtual electrode has a plurality of virtual sub electrodes, wherein a part of the virtual sub electrodes extend toward the first electrode while the other part of the virtual sub electrodes extend toward the second electrode, and the plurality of virtual electrode is located outside of the hot key pattern area.

12. The touch panel as claimed in claim 11, wherein the part of the virtual sub electrodes are arranged alternately with the sub electrodes of the first electrode, while said the other part of the virtual sub electrodes are arranged alternately with the sub electrodes of the second electrode.

13. The touch panel as claimed in claim 11, wherein the contour of the part of the virtual sub electrodes and the contour of the hot key pattern opening are complementary to each other.

14. The touch panel as claimed in claim 1, wherein the conductive electrode structure is connected to an external circuit.

15. The touch panel as claimed in claim 1, wherein the recess comprises a colored ink layer therein.

16. The touch panel as claimed in claim 1, wherein the recess comprises an ink layer having a low optical density therein.

17. The touch panel as claimed in claim 16, wherein the ink layer having the low optical density has an optical density that is less than 2.5.

18. A touch panel, comprising:

a substrate;

at least one decoration layer, disposed on at least one side of the substrate and having at least one hot key area, wherein the hot key area comprises a hot key pattern area and a hot key touching area, the hot key touching area is located on at least one side of the hot key pattern area without overlapping each other, and the decoration layer has at least one recess disposed in the hot key pattern area; and

a conductive electrode structure, disposed on the decoration layer and located in the hot key touching area, wherein the conductive electrode structure is located out of the recess.

19. The touch panel as claimed in claim 18, wherein the recess is a hot key pattern opening.

20. The touch panel according to claim 18, wherein the decoration layer comprises at least an ink layer, at least a photoresist layer, or a combination thereof.