COLOR FILTER SUBSTRATE FOR IN-CELL TOUCH PANEL AND MANUFACTURING METHOD THEREOF

• US 20140168541A1
• Filed: 12/13/2013
• Published: 06/19/2014
• Est. Priority Date: 12/14/2012
• Status: Active Grant

• Current Assignee: Shanghai Tianma Micro-Electronics Company Limited (Tianma Microelectronics Company Limited)
• Original Assignee: Shanghai Tianma Micro-Electronics Company Limited (Tianma Microelectronics Company Limited)
• Inventors: ZHAO, Lijun, MA, Jun
• Granted Patent: US 9,104,056 B2
• Time in Patent Office: Days
• US Class Current: 349/12
• CPC Class Codes: G02F 1/13338 Input devices, e.g. touch panels
• CPC Class Codes: G02F 1/133514 Colour filters
• CPC Class Codes: G02F 1/133516 Methods for their manufacture, e.g. printing, electro-deposition or photolithography
• 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

Abstract

An in-cell touch color filter substrate is disclosed. The color filter substrate includes a substrate including a plurality of display areas and a plurality of non-display areas, where each non-display area surrounds one of the display areas. The color filter substrate also includes a first metal layer, a first organic film layer, a second metal layer including a plurality of conductive pads provided in the non-display areas, and a second organic film layer, successively formed on the substrate. In addition, a plurality of through holes or through slots are formed on the first organic film layer in the non-display areas, where the conductive pads electrically connect with the first metal layer via the through holes or through slots, and where the conductive pads are exposed through the second organic film layer.

Claims

1. An in-cell touch color filter substrate, comprising:

a substrate comprising a plurality of display areas and a plurality of non-display areas, wherein each non-display area surrounds one of the display areas; and

a first metal layer, a first organic film layer, a second metal layer comprising a plurality of conductive pads provided in the non-display areas, and a second organic film layer, successively formed on the substrate,

wherein a plurality of through holes or through slots are formed on the first organic film layer in the non-display areas, wherein the conductive pads electrically connect with the first metal layer via the through holes or through slots, and wherein the conductive pads are exposed through the second organic film layer.

2. The in-cell touch color filter substrate of claim 1, wherein the second metal layer in the non-display areas is completely uncovered by the second organic film layer.

3. The in-cell touch color filter substrate of claim 1, wherein the plurality of conductive pads in each of the non-display areas are all located on the same side of the non-display area and are arranged linearly.

4. The in-cell touch color filter substrate of claim 3, wherein the substrate comprises at least one row and at least one column of display areas.

5. The in-cell touch color filter substrate of claim 4, wherein the plurality of conductive pads in each row or column of display areas are all located on the same side of the non-display area for the row or column of display areas and are arranged linearly.

6. The in-cell touch color filter substrate of claim 1, wherein the thicknesses of the first organic film layer and the thickness of the second organic film layer are between 1.5 μ

m and 2.5 μ

m.

7. An in-cell touch panel comprising:

an in-cell color filter substrate, comprising;

a substrate comprising a plurality of display areas and a plurality of non-display areas, wherein each non-display area surrounds one of the display areas, and

a first metal layer, a first organic film layer, a second metal layer comprising a plurality of conductive pads provided in the non-display areas, and a second organic film layer, successively formed on the substrate,

wherein a plurality of through holes or through slots are formed on the first organic film layer in the non-display areas, wherein the conductive pads electrically connect with the first metal layer via the through holes or through slots, and wherein the conductive pads are exposed through the second organic film layer;

an array substrate, and

a liquid crystal layer disposed between the in-cell touch color filter substrate and the array substrate.

8. A method of manufacturing an in-cell touch color filter substrate, the method comprising:

providing a substrate comprising at least one display area and at least one non-display area surrounding the at least one display area;

forming a first metal layer on the substrate;

forming a first organic film layer on the first metal layer;

etching off a part of the first organic film layer to form at least one through hole or one through slot;

forming, on the first organic film layer, a second metal layer comprising at least one conductive pad in the non-display area and electrically connected with the first metal layer through the through hole or through slot;

forming a second organic film layer on the second metal layer; and

etching off a part of the second organic film layer to uncover the conductive pad.

9. The method for manufacturing the in-cell touch color filter substrate of claim 8, wherein each non-display area is uncovered after a part of the second organic film layer is etched off

10. The method for manufacturing the in-cell touch color filter substrate of claim 8, wherein the plurality of conductive pads in each of the non-display area are located on the same side of the non-display area and arranged linearly.

11. The method for manufacturing the in-cell touch color filter substrate of claim 10, wherein the substrate comprises at least one row and at least one column of display areas, wherein each of the non-display areas surround one of the display areas.

12. The method for manufacturing the in-cell touch color filter substrate of claim 11, wherein the plurality of conductive pads in each row or column of display areas are located on the same side of the non-display area for the row or column of display areas and are arranged linearly.

13. The method for manufacturing the in-cell touch color filter substrate of claim 8, wherein the thicknesses of the first organic film layer and the thickness of the second organic film layer are between 1.5 μ

m and 2.5 μ

m.