Touch Panel and Touch Panel Type Display Device

• US 20100321329A1
• Filed: 06/28/2008
• Published: 12/23/2010
• Est. Priority Date: 06/28/2007
• Status: Active Grant

• Current Assignee: Kyocera Corporation
• Original Assignee: Kyocera Corporation
• Inventors: Nozawa, Junichi
• Granted Patent: US 8,570,299 B2
• Time in Patent Office: Days
• US Class Current: 345/174
• CPC Class Codes: G06F 3/045 using resistive elements, e.g. a single continuous surface or two parallel surfaces put in contact

Abstract

The present invention is related to a touch panel comprising: a first base that includes a first resistance film; a second base that includes a second resistance film; a conductor that is electrically connected to at least one of the first resistance film and the second resistance film; and a spacer that is interposed in a first facing area where the first resistance film faces the second resistance film. The spacer is also interposed in a second facing area where at least one of the first resistance film and the second resistance film faces the conductor. The present invention may further include an insulating film interposed in the second facing area, instead of the spacer interposed in the second facing area. The component materials of the insulating film are the same as those of the spacers.

Claims

1. A touch panel comprising:

a first base that includes a first resistance film;

a second base that includes a second resistance film;

a conductor that is electrically connected to at least one of the first resistance film and the second resistance film; and

a spacer that is interposed in a first facing area where the first resistance film faces the second resistance film, wherein

the spacer is also interposed in at least a part of a second facing area where at least one of the first resistance film and the second resistance film faces the conductor.

2. The touch panel according to claim 1, wherein the spacer is provided to one of the first base and the second base.

3. The touch panel according to claim 1, wherein a component material of the spacer is one of a thermosetting resin and an ultraviolet curing resin.

4. The touch panel according to claim 1, wherein the spacer includes an insulating particle.

5. The touch panel according to claim 1, wherein the spacer comprises a plurality of dot spacers, and

an arrangement pitch of the dot spacers interposed in the second facing area is smaller than an arrangement pitch of the dot spacers interposed in the first facing area.

6. The touch panel according to claim 5, wherein the arrangement pitch of the dot spacers interposed in the second facing area is equal to or less than 200 micrometers.

7. The touch panel according to claim 1, wherein the conductor comprises a metal thin film.

8. The touch panel according to claim 7, wherein the metal thin film is an aluminum film, an aluminum alloy film, a multi-layered film of chromium and aluminum films, or a multi-layered film of chromium and aluminum alloy films.

15. A touch panel type display device comprising:

a display panel; and

a touch panel according to claim 1 that is arranged in such a manner that a principal surface of the first base or the second base faces a principal surface of the display panel.

9. A touch panel comprising:

a first base that includes a first resistance film;

a second base that includes a second resistance film;

a conductor that is electrically connected to at least one of the first resistance film and the second resistance film; and

a spacer that is interposed between the first resistance film and the second resistance film, wherein

the touch panel further comprises an insulating film that is interposed in at least a part of a facing area where at least one of the first resistance film and the second resistance film faces the conductor, and

a component material of the insulating film is same as a component material of the spacer.

10. The touch panel according to claim 9, wherein the insulating film as well as the spacer is provided to one of the first base and the second base.

11. The touch panel according to claim 9, wherein a component material of the spacer is one of a thermosetting resin and an ultraviolet curing resin.

12. The touch panel according to claim 9, wherein the spacer includes an insulating particle.

13. The touch panel according to claim 9, wherein the conductor comprises a metal thin film.

14. The touch panel according to claim 13, wherein the metal thin film is an aluminum film, an aluminum alloy film, a multi-layered film of chromium and aluminum films, or a multi-layered film of chromium and aluminum alloy films.)

16. A touch panel type display device comprising:

a display panel; and

a touch panel according to claim 9 that is arranged in such a manner that a principal surface of the first base or the second base faces a principal surface of the display panel.