Input device and display device provided with same

• US 9,182,857 B2
• Filed: 12/25/2010
• Issued: 11/10/2015
• Est. Priority Date: 12/28/2009
• Status: Active Grant

• Current Assignee: Kyocera Corporation
• Original Assignee: Kyocera Corporation
• Inventors: Nagata, Yasunari, Minami, Takashi, Miyazaki, Yoshio
• Primary Examiner(s): Patel, Kumar
• Assistant Examiner(s): Sadio, Insa
• Application Number:
  US13/498,843
• Publication Number:
  US 20120182250A1
• Time in Patent Office: 1,781 Days
• Field of Search: 345173-184, 178 1801- 1809
• US Class Current: 1/1
• CPC Class Codes: G06F 2203/04103 Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices
• CPC Class Codes: G06F 2203/04111 Cross over in capacitive digitiser, i.e. details of structures for connecting electrodes of the sensing pattern where the connections cross each other, e.g. bridge structures comprising an insulating layer, or vias through substrate
• 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

An input device is provided with a substrate having a main surface, a first detecting electrode pattern provided on or above the main surface of the substrate, and a second detecting electrode pattern provided on or above the main surface of the substrate wherein a portion of the second detecting electrode pattern intersects the first detecting electrode pattern through an insulator; wherein the insulator, in cross-section taken along the second detecting electrode pattern, comprises a curved convex surface in a region from an end portion to an apex of the insulator.

Claims

1. An input device comprising:

a substrate having a main surface;

a first detection electrode pattern provided on or above the main surface of the substrate; and

a second detection electrode pattern provided on or above the main surface of the substrate, a portion of the second detection electrode pattern intersecting the first detection electrode pattern via an insulator, wherein

the first detection electrode pattern includes a plurality of first detection electrodes and a first connection electrode electrically connecting adjacent first detection electrodes of the plurality of first detection electrodes,

the second detection electrode pattern includes a plurality of second detection electrodes and a second connection electrode electrically connecting adjacent second detection electrodes of the plurality of second detection electrodes,

the first connection electrode intersects the second connection electrode via the insulator,

the adjacent first detection electrodes are connected to both end portions of the first connection electrode,

the end portions of the first connection electrode are exposed from the insulator,

the insulator has a convex curved surface on a cross section along the second detection electrode pattern and in a region from an end portion to an apex of the insulator, and

a tilt angle is formed between the substrate and the convex curved surface of the end portion of the insulator and is set within a range of 2 to 20 degrees.

2. The input device according to claim 1, wherein an upper surface of the insulator on a cross section perpendicular to the cross section along the second detection electrode pattern is more flat than the upper surface of the insulator on the cross section along the second detection electrode pattern.

3. The input device according to claim 1, the insulator is formed in a rectangular shape elongated in a direction along the second detection electrode pattern as viewed from above.

4. A display device comprising:

the input device according to claim 1; and

a display panel arranged to face the input device.

5. The display device according to claim 4, wherein the display panel is a liquid crystal display panel.

6. The input device according to claim 1, wherein the adjacent first detection electrodes are provided to cover the both end portions of the first connection electrode.

7. The input device according to claim 1, wherein a surface opposite to the main surface of the substrate is located close to an input operation side compared to the main surface of the substrate.