MAKING DISPLAY DEVICE WITH PIXEL-ALIGNED ELECTRODE

• US 20140082934A1
• Filed: 09/26/2012
• Published: 03/27/2014
• Est. Priority Date: 08/16/2012
• Status: Active Grant

• Current Assignee: Eastman Kodak Company
• Original Assignee: Eastman Kodak Company
• Inventors: Cok, Ronald Steven
• Granted Patent: US 9,134,860 B2
• Time in Patent Office: Days
• US Class Current: 29/825
• CPC Class Codes: G02F 1/13338 Input devices, e.g. touch panels
• CPC Class Codes: G06F 3/0412 Digitisers structurally integrated in a display
• CPC Class Codes: G06F 3/0443 using a single layer of sensing electrodes
• 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
• CPC Class Codes: Y10T 29/49117 Conductor or circuit manufacturing

Abstract

A method of making a display device includes providing a display substrate having a first display substrate side, a second display substrate side opposed to the first display substrate side, and an array of pixels formed in rows and columns on or over the first display substrate side. A transparent dielectric layer is located over the display, the transparent dielectric layer having a row side and an opposed column side. Row electrodes are provided on the row side and column electrodes are provided on the column side. Each row electrode extends exclusively over all of the pixels in a row and each column electrode extends exclusively over all of the pixels in a column.

Claims

1. A method of making a display device, comprising:

providing a display substrate having a first display substrate side, a second display substrate side opposed to the first display substrate side, and an array of pixels formed in rows and columns on or over the first display substrate side;

locating a transparent dielectric layer over the display, the transparent dielectric layer having a row side and an opposed column side;

providing row electrodes on the row side and column electrodes on the column side; and

wherein each row electrode in a layer extends exclusively over all of the pixels in a row and each column electrode in a layer extends exclusively over all of the pixels in a column.

2. The method of claim 1, wherein each row electrode extends exclusively over all of the pixels in multiple adjacent rows or each column electrode extends exclusively over all of the pixels in multiple adjacent columns, or both.

3. The method of claim 1, further including forming the row electrodes or column electrodes with micro-wires.

4. The method of claim 1, wherein the row electrodes or column electrodes are partially transparent.

5. The method of claim 1, further including forming the transparent dielectric layer on or over the display substrate.

6. The method of claim 1, further including forming the row electrodes or column electrodes on or over the display substrate.

7. The method of claim 6, further including forming the row electrodes or column electrodes on the second display substrate side or on layers formed or located on the second display substrate side.

8. The method of claim 6, further including forming the row electrodes or column electrodes on the first display substrate side or on layers formed or located on the first display substrate side.

9. The method of claim 1, further including forming or locating a display cover over the pixels on first display substrate side and forming the row electrodes or column electrodes on the display cover.

10. The method of claim 1, further including forming the row electrodes on the row side or forming the column electrodes on the column side.

11. The method of claim 1, further including laminating the transparent dielectric layer to the display substrate.

12. The method of claim 1, wherein adjacent rows or columns of pixels are offset.

13. The method of claim 12, further including forming one or more row or column electrodes in a shape that is not rectangular.

14. The method of claim 12, further including forming one or more row or column electrodes in a crenellated pattern.