Electrooptic device having input function

• US 8,994,668 B2
• Filed: 03/15/2011
• Issued: 03/31/2015
• Est. Priority Date: 03/19/2010
• Status: Active Grant

• Current Assignee: Japan Display West Incorporated (Japan Display Incorporated)
• Original Assignee: Japan Display West Incorporated (Japan Display Incorporated)
• Inventors: Yoshiyama, Atsushi
• Primary Examiner(s): Hicks, Charles V
• Application Number:
  US13/048,504
• Publication Number:
  US 20110227847A1
• Time in Patent Office: 1,477 Days
• Field of Search: 345/173
• US Class Current: 345/173
• CPC Class Codes: G06F 3/041 Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
• CPC Class Codes: G06F 3/0443 using a single layer of sensing electrodes
• 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

Abstract

Disclosed herein is an electrooptic device having an input function including: an electrooptic panel; a touch panel having an input position detecting electrode in an input area aligned to an image display area of the electrooptic panel; and a wiring board connected to any one of the electrooptic panel and the touch panel, the wiring board having a touch sensor located outside the input area of the touch panel as viewed from an input surface of the touch panel.

Claims

1. An electrooptic device having an input function comprising:

an electrooptic panel;

a touch panel having an input position detecting electrode in an input area aligned to an image display area of the electrooptic panel; and

a flexible wiring board connected to the touch panel, the flexible wiring board having a touch sensor located outside the input area of the touch panel as viewed from an input surface of the touch panel, wherein

the flexible wiring board includes

a first flexible wiring board connected to the touch panel and having a first touch sensor, and

a second flexible wiring board connected to the touch panel and having a second touch sensor;

the first and second flexible wiring boards are electrically connected to each other via a wiring that is provided to the touch panel and that carries a signal to and/or from the second touch sensor;

the wiring is located outside the input area;

a common driving IC is disposed on the first flexible wiring board; and

the signal between the second touch sensor and the common driving IC is transmitted via the wiring and the first flexible wiring board.

2. The electrooptic device having an input function according to claim 1, wherein:

the touch panel has a translucent board forming the input surface; and

the input position detecting electrode and the touch sensor are located on the back side of the translucent board opposite to the input surface.

3. The electrooptic device having an input function according to claim 1, wherein:

the first touch sensor is located along one end of the input area; and

the second touch sensor is located along the other end of the input area opposite to the first touch sensor.

4. The electrooptic device having an input function according to claim 1, wherein the first flexible wiring board is electrically connected to the input position detecting electrode.

5. The electrooptic device having an input function according to claim 1, wherein the first touch sensor and the second touch sensor are electrically connected to the common driving IC.

6. The electrooptic device having an input function according to claim 1, wherein a shape of the first flexible wiring board is different from a shape of the second flexible wiring board.