Display device and method of manufacturing same

• US 9,459,718 B2
• Filed: 02/17/2010
• Issued: 10/04/2016
• 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:
  US12/706,808
• Publication Number:
  US 20100214262A1
• Time in Patent Office: 2,421 Days
• Field of Search: 349/12
• US Class Current: 1/1
• 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 substrate;

a plurality of pixel electrodes arranged in a matrix in a plane parallel with said substrate;

a display functional layer configured to display an image as a result of an image signal supplied to said plurality of pixel electrodes;

a driving electrode opposed to said plurality of pixel electrodes; and

a plurality of detecting electrodes arranged in a plane opposed to said driving electrode, each detecting electrode extending in a first direction of the matrix and each having a predetermined width in a second direction of the matrix, the first direction being perpendicular to the second direction, and said detecting electrodes being arranged in parallel to each other with a predetermined pitch,

wherein,

each of the plurality of detecting electrodes is connected to a detecting circuit through a wire across an end of the plane in the first direction of the matrix,

the predetermined width and the predetermined pitch of each detecting electrode correspond to a multiple other than 1 of the pixel pitch, where the predetermined width and pixel pitch are the same or different,

the plurality of pixel electrodes arranged such that a direction in which pixel electrodes of the same color are located adjacent to one another is aligned with the first direction,

the predetermined widths of the detecting electrodes correlate with pixel size and pixel pitch, and

the detecting electrodes are arranged to overlay only pixels having the same color.

2. The display device according to claim 1, wherein said plurality of detecting electrodes are substantially transparent.

3. The display device according to claim 1 further comprising a color filter layer and wherein:

the substrate includes a first and a second substrate,

said plurality of pixel electrodes are on a first plane of said first substrate,

said color filter layer on a first plane of said second substrate, and

said plurality of detecting electrodes on a second plane of a said second substrate.

4. The display device according to claim 1, wherein said display device is configured to detect touch.

5. The display device according to claim 1, wherein the first direction is a longitudinal direction of the matrix.

6. The display device according to claim 1, wherein the second direction is a longitudinal direction of the matrix.

7. A display device comprising:

a substrate;

a plurality of pixel electrodes arranged in a matrix in a plane parallel with said substrate;

a display functional layer configured to display an image as a result of an image signal supplied to said plurality of pixel electrodes;

a driving electrode opposed to said plurality of pixel electrodes;

a plurality of detecting electrodes arranged in a plane opposed to said driving electrode, each detecting electrode extending in a first direction of the matrix and each having a predetermined width in a second direction of the matrix, the first direction being perpendicular to the second direction, and said detecting electrodes being arranged in parallel to each other with a predetermined pitch;

a color filter layer between said driving electrode and said detecting electrodes,

wherein,

said color filter layer comprises at least a plurality of color regions including at least a red, a green and a blue color region,

said detecting electrodes arranged at a natural number multiple of an arrangement pitch of said color regions in at least one direction,

each of the plurality of detecting electrodes is connected to a detecting circuit through a wire across an end of the plane in the first direction of the matrix,

the predetermined width and the predetermined pitch of each detecting electrode corresponds to a multiple other than 1 of the pixel pitch where the predetermined width and pixel pitch are the same or different,

the plurality of pixel electrodes arranged such that a direction in which pixel electrodes of the same color are located adjacent to one another is aligned with the first direction,

the predetermined widths of the detecting electrodes correlate with pixel size and pixel pitch, and

the detecting electrodes are arranged to overlay only pixels having the same color.

8. The display device according to claim 7, wherein the first direction is a longitudinal direction of the matrix.

9. The display device according to claim 7, wherein the second direction is a longitudinal direction of the matrix.