COLOR FILTER SUBSTRATE HAVING TOUCH-SENSING FUNCTION

• US 20140118419A1
• Filed: 10/25/2013
• Published: 05/01/2014
• Est. Priority Date: 10/26/2012
• Status: Abandoned Application

• Current Assignee: Wintek Corporation
• Original Assignee: Wintek Corporation
• Inventors: Wu, Yi-Chun, Liu, Yu-Chen, Shie, Wun-Yi
• Application Number:
  US14/062,908
• Publication Number:
  US 20140118419A1
• Time in Patent Office: Days
• US Class Current: 345/690
• CPC Class Codes: G02F 1/133514 Colour filters
• 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 3/0448 Details of the electrode shape, e.g. for enhancing the detection of touches, for generating specific electric field shapes, for enhancing display quality

Abstract

The present invention provides a color filter substrate with a touch-sensing function including a substrate, a black matrix, a plurality of color filters, and a patterned common electrode layer. The substrate has a plurality of pixel regions arranged as a matrix, and each pixel region includes a plurality of sub-pixel regions. The black matrix is disposed on the substrate, and has a plurality of openings exposing the substrate and corresponding to each sub-pixel region respectively. Each color filter covers the substrate exposed by each opening. The patterned common electrode layer is disposed on the black matrix and the color filters, and the patterned common electrode layer includes a plurality of integrated units respectively configured for touch sensing and transferring a common signal.

Claims

1. A color filter substrate with touch-sensing function, comprising:

a substrate having a plurality of pixel regions arranged as a matrix, wherein each pixel region comprises a plurality of sub-pixel regions;

a black matrix disposed on the substrate, wherein the black matrix comprises a plurality of openings exposing the substrate, and each opening corresponds to each sub-pixel region respectively;

a plurality of color filters, each of color filter covering the substrate exposed by each opening respectively; and

a patterned common electrode layer disposed on the black matrix and the color filters, wherein the patterned common electrode layer comprises a plurality of integrated units respectively configured for touch sensing and for transmitting a common signal.

2. The color filter substrate with touch-sensing function according to claim 1, wherein each integrated unit comprises a signal transmitting electrode for transmitting the common signal and a touch-sensing signal and a signal receiving electrode for sensing variation of the touch-sensing signal, and each signal receiving electrode partially surrounds each signal transmitting electrode.

3. The color filter substrate with touch-sensing function according to claim 2, wherein the black matrix shields the signal receiving electrode.

4. The color filter substrate with touch-sensing function according to claim 2, wherein each signal transmitting electrode covers the openings in each pixel region respectively.

5. The color filter substrate with touch-sensing function according to claim 4, wherein the signal transmitting electrodes covering the openings situated in the pixel regions of a same row are electrically connected to each other.

6. The color filter substrate with touch-sensing function according to claim 2, wherein each signal transmitting electrode covers the openings in at least two of the pixel regions adjacent to each other respectively.

7. The color filter substrate with touch-sensing function according to claim 2, wherein the signal receiving electrodes of the integrated units corresponding to the pixel regions of a same column are electrically connected to each other.

8. The color filter substrate with touch-sensing function according to claim 1, further comprising a planarization layer disposed between the patterned common electrode layer and the color filters.

9. The color filter substrate with touch-sensing function according to claim 1, wherein the pixel regions comprise a plurality of first pixel regions and a plurality of second pixel regions, wherein the first pixel regions are situated in the pixel regions of a plurality of first rows, the second pixel regions are situated in the pixel regions of a plurality of second rows, each first row and each second row are arranged alternately along a column direction, and each integrated unit is situated corresponding to at least one of the first pixel regions.

10. The color filter substrate with touch-sensing function according to claim 9, wherein the patterned common electrode layer further comprises a plurality of common electrodes electrically connected to each other and covering the openings in the second pixel regions.

11. A color filter substrate with touch-sensing function, comprising:

a substrate having a plurality of pixel regions arranged as a matrix, wherein each pixel region comprises a plurality of sub-pixel regions;

a black matrix disposed on the substrate, wherein the black matrix comprises a plurality of openings exposing the substrate, and each opening corresponds to each sub-pixel region respectively;

a plurality of color filters, each color filter covering the substrate exposed by each opening;

a patterned sensing electrode layer disposed on the black matrix and the color filters, and the patterned sensing electrode layer comprising a plurality of sensing units, wherein each sensing unit comprises a signal transmitting electrode for transmitting a touch-sensing signal and a signal receiving electrode for sensing variation of the touch-sensing signal, wherein each signal receiving electrode partially surrounds each signal transmitting electrode, and the black matrix shields the signal receiving electrodes;

an insulating layer covering the patterned sensing electrode layer; and

a common electrode layer disposed on the insulating layer for transmitting a common signal.

12. The color filter substrate with touch-sensing function according to claim 11, wherein each signal transmitting electrode covers the openings in each pixel region respectively.

13. The color filter substrate with touch-sensing function according to claim 12, wherein the signal transmitting electrodes covering the openings in the pixel regions of a same row are electrically connected to each other.

14. The color filter substrate with touch-sensing function according to claim 11, wherein each signal transmitting electrode covers the openings in at least two of the pixel regions adjacent to each other.

15. The color filter substrate with touch-sensing function according to claim 11, wherein the signal receiving electrodes of the sensing units corresponding to the pixel regions of a same column are electrically connected to each other.

16. The color filter substrate with touch-sensing function according to claim 11, further comprising a planarization layer disposed between the patterned sensing electrode layer and the color filters.