Color filtering substrate and display apparatus

• US 10,503,290 B2
• Filed: 07/28/2015
• Issued: 12/10/2019
• Est. Priority Date: 02/06/2015
• Status: Active Grant

• Current Assignee: Beijing BOE Optoelectronics Technology Co Ltd. (BOE Technology Group Co., Ltd.), BOE Technology Group Co., Ltd.
• Original Assignee: BOE Technology Group Co., Ltd.
• Inventors: Qu, Lianjie, Yang, Li
• Primary Examiner(s): Eisen, Alexander
• Assistant Examiner(s): Teshome, Kebede T
• Application Number:
  US15/022,507
• Publication Number:
  US 20160357278A1
• Time in Patent Office: 1,596 Days
• Field of Search: None
• CPC Class Codes: G02F 1/13338 Input devices, e.g. touch panels
• CPC Class Codes: G02F 1/133512 Light shielding layers, e.g. black matrix G02F1/136209 takes precedence
• CPC Class Codes: G02F 1/133514 Colour filters
• CPC Class Codes: G06F 2203/04103 Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices
• CPC Class Codes: G06F 3/041 Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
• 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

Embodiments of the present invention provide a color filtering substrate and a display apparatus. The color filtering substrate includes: a base substrate; and a black matrix layer and a color filtering layer arranged on the base substrate. The base substrate is further provided with a first touch electrode and a second touch electrode configured to form a touch electrical field. The color filtering substrate provided by the present disclosure causes the touch electrical field produced by the first touch electrode and the second touch electrode to be away from the liquid crystal layer by forming both the first touch electrode and the second touch electrode on the color filtering substrate so as to reduce the mutual effects between the touch electrical field and the display electrical field.

Claims

1. A color filtering substrate, comprising:

a base substrate; and

a black matrix layer for shielding a light and a color filtering layer arranged on the base substrate,

wherein the base substrate is further provided thereon with a first touch electrode and a second touch electrode configured to form a touch electrical field to sense a touch operation, wherein the black matrix is divided into areas, and one of the areas is used as one of the first touch electrode and the second touch electrode and is electrically insulated from other areas of the black matrix layer, and wherein the black matrix layer is produced by electrically conductive materials, and

wherein the first touch electrode is composed of a part of the black matrix layer, and the color filtering layer comprises a first color filter layer which is located in a first color sub-pixel region and is electrically conductive, and the second touch electrode is composed of a part of the first color filter layer and is electrically insulated from other parts of the first color filter layer, and in the second touch electrode, the first color filter layer is also formed at a position corresponding to a black matrix in the black matrix layer such that respective first color sub-pixel regions are connected with each other.

2. The color filtering substrate according to claim 1, wherein the black matrix layer and the color filtering layer are formed on one same side of the base substrate, the color filtering layer further comprising a second color filter layer which is located in a second color sub-pixel region and is electrically insulated, and in the second touch electrode, the second color filter layer is also formed on the black matrix in the black matrix layer and is located between the black matrix layer and the first color filter layer as an insulating layer between the first touch electrode and the second touch electrode.

3. The color filtering substrate according to claim 1, wherein the black matrix layer and the color filtering layer are formed on two opposite sides of the base substrate respectively.

4. The color filtering substrate according to claim 1, wherein the black matrix layer is made from black metal or black resin doped with electrically conductive materials and the first color filter layer is made from colored resin doped with electrically conductive materials.

5. The color filtering substrate according to claim 4, wherein the electrically conductive materials doped in the black resin and the colored resin comprise at least one of silver nanolines, carbon nanotubes and indium tin oxide.

6. The color filtering substrate according to claim 1, further comprising a protective layer which is formed on the color filtering layer and is electrically conductive, wherein the first touch electrode is composed of a part of the protective layer and is electrically insulated from other parts of the protective layer.

7. The color filtering substrate according to claim 6, wherein the black matrix layer, the color filtering layer and the protective layer are sequentially arranged on the color filtering substrate, and the second touch electrode is composed of the one area of the black matrix layer and is electrically insulated from other areas of the black matrix layer, the color filtering layer being formed as an insulating layer between the first touch electrode and the second touch electrode.

8. A display apparatus comprising the color filtering substrate according to claim 1.