Color filter substrate and touch screen display device

• US 9,104,061 B2
• Filed: 03/18/2013
• Issued: 08/11/2015
• Est. Priority Date: 05/03/2012
• Status: Active Grant

• Current Assignee: InnoLux Corporation
• Original Assignee: InnoLux Corporation
• Inventors: Chang, Chih-Kuei
• Primary Examiner(s): Vu, Phu
• Application Number:
  US13/845,167
• Publication Number:
  US 20130293790A1
• Time in Patent Office: 876 Days
• Field of Search: 349/12, 349149-152
• US Class Current: 1/1
• CPC Class Codes: G02F 1/133308 Support structures for LCD panels, e.g. frames or bezels
• CPC Class Codes: G02F 1/133322 Mechanical guidance or alignment of LCD panel support components
• 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 2203/04101 2.5D-digitiser, i.e. digitiser detecting the X/Y position of the input means, finger or stylus, also when it does not touch, but is proximate to the digitiser's interaction surface and also measures the distance of the input means within a short range in the Z direction, possibly with a separate measurement setup
• CPC Class Codes: G06F 2203/04111 Cross over in capacitive digitiser, i.e. details of structures for connecting electrodes of the sensing pattern where the connections cross each other, e.g. bridge structures comprising an insulating layer, or vias through substrate
• CPC Class Codes: G06F 3/0412 Digitisers structurally integrated in a display
• CPC Class Codes: G06F 3/04164 Connections between sensors and controllers, e.g. routing lines between electrodes and connection pads
• 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: G06F 3/045 using resistive elements, e.g. a single continuous surface or two parallel surfaces put in contact
• CPC Class Codes: G09G 3/36 using liquid crystals

Abstract

A color filter substrate includes: a transparent substrate; a plurality of color filters which are separately disposed on the transparent substrate; a black matrix unit made of a non-transparent material and formed on the transparent substrate, the black matrix encircling the color filters; and at least one alignment unit that includes at least two alignment holes penetrating the black matrix to expose the transparent substrate.

Claims

1. A color filter substrate, comprising:

a transparent substrate having a first surface;

a plurality of color filters which are separately disposed on said first surface of said transparent substrate;

a black matrix made of a non-transparent material and formed on said first surface of said transparent substrate, said black matrix encircling said color filters; and

at least one alignment unit that includes at least two alignment holes penetrating said black matrix to expose said transparent substrate,

wherein said transparent substrate further has a second surface opposite to said first surface, said color filter substrate further comprising a touch sensor formed on said second surface;

wherein said color filter substrate further comprises at least one flexible circuit board electrically connected to said touch sensor; and

wherein said flexible circuit board includes a connecting region connected to said second surface, and at least two alignment patterns formed on said connecting region, each of said two alignment patterns being aligned with a respective one of said two alignment holes of said alignment unit, said alignment holes having an area larger than that of said alignment patterns.

2. The color filter substrate of claim 1, wherein said alignment unit further includes two alignment marks that are formed on said second surface, and each of said alignment marks corresponds in position to a respective one of said alignment holes.

3. The color filter substrate of claim 1, wherein each of said alignment holes is defined by an edge, a shortest distance between said edge of each of said alignment holes and the respective one of said alignment patterns being not smaller than 30 μ

m.

4. The color filter substrate of claim 1, wherein said flexible circuit board further includes a plurality of conductive wires electrically connected to said touch sensor, each of said alignment holes having a size sufficient to expose exposing the respective one of said alignment patterns and at least one of said conductive wires adjacent to the respective one of said alignment patterns.

5. A touch screen display device, comprising:

a liquid crystal display panel including a color filter substrate that includes a transparent substrate, a plurality of color filters, a black matrix, and at least one alignment unit, said transparent substrate having a first surface and a second surface opposite to said first surface, said color filters being separately disposed on said first surface, said black matrix being made of a non-transparent material and being formed on said first surface to encircle said color filters, said alignment unit including at least two alignment holes penetrating said black matrix to expose said transparent substrate;

a touch sensor formed on said second surface; and

at least one flexible circuit board formed on and connected to said second surface, and electrically connected to said touch sensor, said flexible circuit board including at least two alignment patterns each of which is aligned with a respective one of said alignment holes.

6. The touch screen display device as claimed in claim 5, wherein said flexible circuit board includes a connecting region for connecting to said second surface, and a plurality of conductive wires, said two alignment patterns being disposed on two opposite ends of said connecting region, said conductive wires being electrically connected with said touch sensor, each of said alignment holes having a size sufficient to expose the respective one of said alignment patterns and at least one of said conductive wires adjacent to the respective one of said alignment patterns.

7. The touch screen display device as claimed in claim 6, wherein each of said alignment holes is defined by an edge, a shortest distance between said edge of each of said alignment holes and the respective one of said alignment patterns being not smaller than 30 μ

m.

8. The touch screen display device as claimed in claim 5, wherein said touch sensor is one of a capacitive touch sensor and a resistive touch sensor.