Display device

• US 9,052,757 B2
• Filed: 01/12/2012
• Issued: 06/09/2015
• Est. Priority Date: 01/18/2011
• Status: Active Grant

• Current Assignee: Japan Display Incorporated
• Original Assignee: Japan Display Incorporated
• Inventors: Nishitani, Shigeyuki, Kubo, Masaki
• Primary Examiner(s): NGUYEN, KIMNHUNG T
• Application Number:
  US13/348,680
• Publication Number:
  US 20120182258A1
• Time in Patent Office: 1,244 Days
• Field of Search: 345/156, 345173-179, 349/56
• US Class Current: 1/1
• CPC Class Codes: G06F 2203/0339 Touch strips, e.g. orthogonal touch strips to control cursor movement or scrolling; single touch strip to adjust parameter or to implement a row of soft keys
• CPC Class Codes: G06F 2203/04103 Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices
• CPC Class Codes: G06F 2203/04107 Shielding in digitiser, i.e. guard or shielding arrangements, mostly for capacitive touchscreens, e.g. driven shields, driven grounds
• 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 3/03547 Touch pads, in which fingers can move on a surface
• CPC Class Codes: G06F 3/0412 Digitisers structurally integrated in a display
• CPC Class Codes: G06F 3/0418 for error correction or compensation, e.g. based on parallax, calibration or alignment
• CPC Class Codes: G06F 3/044 by capacitive 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

A display device which can achieve compatibility between the simplicity of the configuration or control of electronic equipment and the maintaining of its high operability includes: a display panel and a touch panel arranged on a front surface side of the display panel as viewed from a viewer. The touch panel includes one transparent substrate and a conductive pattern disposed on the substrate. A plurality of detection areas in each of which a touch position can be detected are provided in the touch panel. A non-detection area in which the touch position is not detected is provided between two detection areas next to each other.

Claims

1. A display device comprising:

a display panel; and

a touch panel arranged on a front surface side of the display panel as viewed from a viewer;

wherein

the touch panel comprises one transparent substrate, a conductive pattern disposed on the substrate, and a light-shielding layer;

a plurality of detection areas in each of which a touch position can be detected are provided in the touch panel;

a non-detection area in which the touch position is not detected is provided between two detection areas next to each other out of the plurality of detection areas;

each of the two detection areas includes a plurality of first electrodes and a plurality of second electrodes; and

the non-detection area includes a plurality of extended wires, each of the plurality of extended wires in the non-detection area connecting one of the plurality of first electrodes in one of the two detection areas and one of the plurality of first electrodes in the other of the two detection areas.

2. The display device according to claim 1, wherein

in all the plurality of detection areas, the same detection system of the touch position is adopted.

3. The display device according to claim 2, wherein

the detection system is an electrostatic capacitive coupling system.

4. The display device according to claim 3, wherein

a planar shape and arrangement rule of the first electrode and the second electrode are the same in the two detection areas of the plurality of detection areas.

5. The display device according to claim 1, wherein

there are two or more detection systems of the touch position in the plurality of detection areas.

6. The display device according to claim 1, wherein

the touch panel is provided with a detection area overlapping a display area in the display panel and a detection area not overlapping the display area.

7. The display device according to claim 6, wherein

a light source emitting light to the viewer side through the detection area not overlapping the display area is arranged behind the detection area as viewed from the viewer.

8. The display device according to claim 1, wherein

the touch panel has an external connection terminal for inputting and outputting electric signals, and

the external connection terminal is disposed in the non-detection area located between the two detection areas next to each other.

9. The display device according to claim 1, wherein the light-shielding layer covers the non-detection area and has at least an opening in the one of the two detection areas configured as an operation button for the display device.

10. The display device according to claim 9, wherein a transparent front window is arranged on a front surface side of the transparent substrate of the touch panel, the light-shielding layer being formed as a light-shielding film on a rear side of the front window facing the front surface side of the touch panel.

11. The display device according to claim 10, wherein the light-shielding film has one opening in the other of the two detection areas and has a plurality of openings in the one of the two detection areas corresponding to respective operation buttons in the one of the two detection areas, the light-shielding film covering the non-detection area between respective openings wherein wires connecting one of the plurality of first electrodes in the one of the two detection areas and one of the plurality of first electrodes in the other of the two detection areas exist.