DISPLAY DEVICE

• US 20120182258A1
• Filed: 01/12/2012
• Published: 07/19/2012
• Est. Priority Date: 01/18/2011
• Status: Active Grant

• Current Assignee: Japan Display Incorporated
• Original Assignee: Japan Display Incorporated
• Inventors: Nishitani, Shigeyuki, KUBO, Masaki
• Granted Patent: US 9,052,757 B2
• Time in Patent Office: Days
• US Class Current: 345/174
• 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 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, and

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

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

in each of the plurality of detection areas, a first electrode and a second electrode for generating an electric field are arranged on a surface of the detection area,

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

the first electrodes are electrically connected to each other or the second electrodes are electrically connected to each other.

5. The display device according to claim 3, wherein

the touch panel is provided with a detection area in which a plurality of first electrodes and a plurality of second electrodes for generating an electric field are disposed together on a surface of the detection area and a detection area in which one first electrode and one second electrode for generating an electric field are disposed.

6. 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.

7. 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.

8. The display device according to claim 7, 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.

9. 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 two detection areas next to each other.

10. The display device according to claim 1, wherein

on a front surface of the touch panel, a front window having a transparent substrate and a light-shielding film which has openings at positions overlapping two or more detection areas of the plurality of detection areas is arranged.