Display device and method of manufacturing same

• US 9,791,951 B2
• Filed: 12/18/2014
• Issued: 10/17/2017
• Est. Priority Date: 02/24/2009
• Status: Active Grant

• Current Assignee: Japan Display Incorporated
• Original Assignee: Japan Display Incorporated
• Inventors: Ishizaki, Koji, Noguchi, Kouji
• Primary Examiner(s): Merlin, Jessica M
• Application Number:
  US14/575,092
• Publication Number:
  US 20150103277A1
• Time in Patent Office: 1,034 Days
• CPC Class Codes: G02F 1/13306 Circuit arrangements or driving methods for the control of single liquid crystal cells G02F1/132, G02F1/133382 take precedence
• CPC Class Codes: G02F 1/13338 Input devices, e.g. touch panels
• CPC Class Codes: G02F 1/133514 Colour filters
• CPC Class Codes: G02F 1/133528 Polarisers
• CPC Class Codes: G02F 1/134309 characterised by their geometrical arrangement
• CPC Class Codes: G06F 3/0412 Digitisers structurally integrated in a display
• CPC Class Codes: G06F 3/0445 using two or more layers of sensing electrodes, e.g. using two layers of electrodes separated by a dielectric layer
• 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 a display device including a substrate, a plurality of pixel electrodes arranged in a form of a matrix in a plane parallel with the substrate, a display functional layer exerting an image display function on a basis of an image signal supplied to the plurality of pixel electrodes, a driving electrode opposed to the plurality of pixel electrodes, and a plurality of detecting electrodes arranged in a form of a plane opposed to the driving electrode, separated and arranged at a pitch of a natural number multiple of an arrangement pitch of the pixel electrodes in one direction in the arrangement plane, and each capacitively coupled with the driving electrode.

Claims

1. A display device comprising:

a display layer including a plurality of pixels; and

a touch panel including (a) plurality of stripe-shaped first electrodes extending in a first direction, (b) a plurality of stripe-shaped second electrodes crossing the plurality of stripe-shaped first electrodes and extending in a second direction that crosses the first direction, (c) a plurality of floating electrodes arranged between the second electrodes, (d) a plurality of first slits extending in the first direction between the floating electrodes, and (e) a plurality of second slits extending in the second direction between the floating electrodes, each of the plurality of second slits being in communication with the plurality of first slits.

2. The display device according to claim 1, further comprising:

a driving circuit coupled to the plurality of stripe-shaped first electrodes; and

a detection circuit coupled to the plurality of stripe-shaped second electrodes.

3. The display device according to claim 2, wherein when an alternating current drive signal is applied to the plurality of stripe-shaped first electrodes by the driving circuit, a detection signal is output to the detection circuit from the plurality of stripe-shaped second electrodes.

4. A capacitive touch panel comprising:

(a) plurality of stripe-shaped first electrodes extending in a first direction;

(b) a plurality of stripe-shaped second electrodes crossing the plurality of stripe-shaped first electrodes and extending in a second direction that crosses the first direction;

(c) a plurality of floating electrodes arranged between the second electrodes;

(d) a plurality of first slits extending in the first direction between the floating electrodes; and

(e) a plurality of second slits extending in the second direction between the floating electrodes, each of the plurality of second slits being in communication with the plurality of first slits.

5. The capacitive touch panel according to claim 4, further comprising:

a driving circuit coupled to the plurality of stripe-shaped first electrodes;

a detection circuit coupled to the plurality of stripe-shaped second electrodes.

6. The capacitive touch panel according to claim 5, wherein, when an alternating current drive signal is applied to the plurality of stripe-shaped first electrodes by the driving circuit, a detection signal is output to the detection circuit from the plurality of stripe-shaped second electrodes on the basis of capacitance at each crossing area between the plurality of stripe-shaped first electrodes and the plurality of stripe-shaped second electrodes.