CN2911707Y

CN2911707Y - Color absorber

Info

Publication number: CN2911707Y
Application number: CN 200620013248
Authority: CN
Inventors: 杨会良; 邱耀
Original assignee: BYD Co Ltd
Current assignee: Shenzhen Holitech Optoelectronics Co Ltd
Priority date: 2006-03-24
Filing date: 2006-03-24
Publication date: 2007-06-13
Anticipated expiration: 2016-03-24

Abstract

The utility model discloses a color filter plate used for liquid crystal display, which comprises a transparent base plate, a conductive light shielding layer, which is arranged on the transparent base plate; the conductive light shielding layer is composed of a plurality of first conductive light shielding lines which are parallel mutually and extend toward the first direction, and a plurality of second conductive light shielding lines which are parallel mutually and extend toward the first direction, a one-time pixel area is formed in the middle of every two adjacent first conductive light shielding line and second conductive light shielding line, and the both ends of the first conductive light shielding line penetrate the secondary pixel area and continue to extend outward; a color filtering area, formed in the secondary pixel area; a smooth layer, formed on the color filtering area, and covering the whole color filtering area; an electrode layer, formed on the upper part of the smooth layer, whose length is longer than the smooth layer, extends toward the first direction and covers the both end parts of the first conductive light shielding line penetrating the secondary pixel area, to connect the electrode layer and the first conductive light shielding line. The structure of the utility model is simple and the utility model improves the display effect of the liquid crystal display.

Description

Colored filter

[technical field]

The utility model relates to a kind of colored filter, particularly about a kind of colored filter that can be used for improving crosstalk phenomenon.

[background technology]

LCD is a kind of passive type display device, for reaching the colored effect that shows, one colored filter need be provided, its effect is that the white light that will pass through is converted into the Red Green Blue light beam, and (Thin FilmTransistor, TFT) layer and other assemblies such as liquid crystal therebetween are to reach the effect that shows the different color image to cooperate thin film transistor (TFT).The colored filter operated by rotary motion mainly comprises a black matrix and a dyed layer between upper substrate and indium-tin oxide electrode.

Seeing also Fig. 1, is prior art colorful filter structure synoptic diagram.This colored filter comprises a glass substrate 15, one black matrix 14, a dyed layer 13, a flatness layer 12 and an electrode layer 11.

This electrode layer 11 is to be made by the method for sputter, its material generally be nesa coating (as tin indium oxide, ITO), with counter electrode as pixel capacitors on the thin-film transistor array base-plate (figure do not show).

This flatness layer 12 by third rare be that resin is formed so that colored light filter membrane layer 13 flattening surfaces, have the effect of protection color filter film simultaneously.

This dyed layer 13 is made of red 131, green 132, blue 133 3 kinds of coloring units that organic colour-wash makes, on this glass substrate 15 recurring rule arrange these three kinds of coloring units with respectively by Red Green Blue light, stop that the light of other wavelength passes through.

Should be arranged between this three coloring units by black matrix 15, its effect is that the light between three coloring units is passed through in blocking, prevents leakage of light and stops coloured material to mix.

Because electrode layer 11 is comprehensive being formed on the colored filter substrate 15, along with panel of LCD develops towards the large scale direction, the area that the colored light filter membrane layer top forms pixel capacitors layer 11 constantly increases, thereby causes its resistance also constantly to increase.And then cause signal easily because of interference, noise etc. cause decay, and cause crosstalk phenomenon, cause the display frame quality bad, influence qualification rate.

For addressing the above problem, a kind of ITO of employing conductor wire colored filter in parallel with electrode layer disclosed for Chinese patent CN031234860 number, shown in Fig. 2 a, this colored filter 20 comprises a transparent glass substrate 27, a shading matrix district 26, a colored light filter membrane layer 25, a flatness layer 24, a transparent electrode layer 23, an insulated wire 22 and an electrode wires 21.Fig. 2 b is the cross section structure synoptic diagram of this colored filter, this shading matrix district 26 is arranged on the transparency carrier 27, be parallel to each other and form by the many first shading lines parallel to each other and that extend towards first direction and many, at the centre of adjacent two first shading lines and adjacent two second a shading lines formation pixel region (subpixel) towards the second shading line that second direction is extended; Colored light filter membrane layer 25 is formed in this time pixel region, is made of red 251, green 252, blue 253 3 kinds of coloring units; Electrode layer 23 is formed on this transparency carrier; This insulated wire 22 is formed on this electrode layer 23, and its below is corresponding to the shading matrix district; Conductor wire 21 is formed at insulated wire 22 tops, and its length is longer than insulated wire 22, and extends to these insulated wire 22 two ends and be connected with electrode layer 23.

This patented claim is to utilize ITO conductor wire 21 in parallel to reach the purpose that reduces electrode layer 23 resistance values with electrode layer 23.But, because this application need form an insulated wire 22 and an electrode wires 21 above electrode layer 23, thereby the flatness on electrode layer 23 surfaces is reduced, thereby the display effect that influences LCD is.And,, will inevitably increase figure cloth and photo-mask process, and then cause the complexity of production technology and the raising of production cost owing to need to increase an insulated wire 22 and an electrode wires 21.

[summary of the invention]

Technical problem to be solved in the utility model provides a kind of simple in structure and can effectively improve the colored filter of the crosstalk phenomenon of LCD.

The technical scheme that adopts for solving the problems of the technologies described above is as follows:

A kind of colored filter that is used for LCD comprises: a transparency carrier; One conductive shading, be arranged on this transparency carrier, this conductive shading is parallel to each other by many and the first conduction shading line that extends towards first direction and many are parallel to each other and are formed towards the second conduction shading line that second direction is extended, form a pixel region in the middle of adjacent two first conduction shading lines and the adjacent two second conduction shading lines, the two ends of the first conduction shading line are passed through time pixel region and are continued to stretch out; One colorized optical filtering district is formed at pixel region above-mentioned time; One flatness layer is formed in the colorized optical filtering district, covers whole colorized optical filtering district; One electrode layer is formed on this flatness layer top, and its length is longer than flatness layer, and extends and cover the two end portions that the first conduction shading line passes through time pixel region towards first direction, makes electrode layer and first conduct electricity the shading line and is connected.

Wherein, can also be coated with an insulation course on the described flatness layer, the material of this flatness layer be third rare be resin, this insulation course is silicon dioxide or silicon nitride, this transparency carrier is glass substrate or transparent polymer material substrate, the material of this first conduction shading line and the second conduction shade line is a chromium, and wherein this electrode layer is tin indium oxide or indium zinc oxide.

This first conduction shading line is vertical mutually with the second conduction shade line.

The beneficial effects of the utility model are: the structure that conductive layer is connected with conductive shading in the utility model not only can reduce the resistance value of the electrode layer of colored filter, be difficult for causing decay when making the signal transmission because of interference, noise, thereby avoid crosstalk phenomenon, improve the picture quality when showing, and the qualification rate of raising panel, and it is simple in structure, remove an insulated wire and the electrode wires of electrode layer of the prior art top, thereby improve the flatness of electrode layer surface, thereby improve the display effect of LCD.In addition, reduce the structure of insulated wire and electrode wires, can simplify production technology and reduce production costs.

Feature of the present utility model and advantage will be elaborated in conjunction with the accompanying drawings by embodiment.

[description of drawings]

Fig. 1 is the structural representation of existing colored filter.

Fig. 2 a can solve the structural representation of a kind of prior art colored filter of crosstalk phenomenon.

Fig. 2 b is the cross section structure synoptic diagram of colored filter among Fig. 2 a.

Fig. 3 a is the structural representation of the utility model colored filter.

Fig. 3 b is the cross section structure synoptic diagram of colored filter among Fig. 3 a.

Fig. 4 is that shading line structure synoptic diagram is conducted electricity in the present invention.

[embodiment]

Seeing also Fig. 3 a, is the structural representation of a kind of embodiment of the utility model colored filter.This colored filter comprises: a transparency carrier 36, a conductive shading 35 that on this transparency carrier 36, forms, the structure of conductive shading 35 will be explained below, one chromatic filter layer 34 is formed on the conductive shading 35, one flatness layer 33 is formed on the chromatic filter layer 34, one insulation course 32 is formed on flatness layer 33 tops, this flatness layer 33 and insulation course 32 cover the whole shading matrix zone and the chromatic filter layer 34 of conductive shading 35, contact with electrode layer 31 to reach blocking-up conduction shading matrix zone.This electrode layer 31 is formed on this insulation course top.

It needs to be noted that the effect of flatness layer is protection chromatic filter layer and smooth effect in the prior art, the material of the flatness layer 33 in the utility model be third rare be resin, have electric insulation functions, thereby also can make insulation course and use.At this moment, conductive layer 31 can be set directly on flatness layer 33, thereby reduce insulation course 32 these structures, make flatness layer possess the function of flatness layer and insulation course simultaneously.

The conductive shading of the utility model colored filter such as Fig. 3 a, Fig. 3 b and shown in Figure 4, comprise some first conduction shading lines 42 that are parallel to each other and some second conduction shading lines 43 that is parallel to each other, this the first conduction shading line 42 and the second conduction shading line 43 are vertical mutually and form some matrix pattern 41, be called black matrix" (being 35 among Fig. 3 b), the effect of this black matrix" is shading and is used for separating the continuous down chromatic filter layer of making, to increase the comparative of color.Simultaneously, continue to stretch out in the two ends that the first conduction shading line 42 passes through black matrix" 41, make the length of the first conduction shading line 42 longer than insulation course 32, and its two ends extend to insulated wire 32 two ends respectively and are connected with electrode layer 31, thereby forming one is the parallel circuit of contact with insulated wire 32 two ends, can reduce the original resistance value of electrode layer 31.

The manufacturing process of the utility model colored filter is as follows: a glass substrate 36 at first is provided, and forms a conductive shading 35 thereon, its material can be a crome metal, then utilizes photoetching to form the first conduction shading line 42 and second conductive shading 43.The first conduction shading line and the second conduction shading line form matrix pattern 41, and simultaneously, continue to stretch out and be connected with electrode layer 31 in the two ends of the first conduction shading line 42.Pixel region 44, one colorized optical filtering districts 34 of adjacent two first conduction shading lines 42 and adjacent two second conduction shading lines, 43 middle formation are formed at this time pixel region 44.This time pixel region 44 is that the optical filtering pixel by the sequentially built Red Green Blue forms, utilization is revolved the figure mode and is formed a red pigment photoresist on the surface of substrate 36, follow mode with exposure imaging, stay red pigment photoresist 341 at the predetermined inferior pixel region that forms red pixel, and remove the red pigment photoresist of all the other positions.With the same manner, order forms green 342 and blue 343 optical filtering pixel respectively on substrate 36 surfaces in the inferior pixel region 44 that black matrix" 41 is separated.

Then at the flatness layer 33 of black matrix" 41 surface coverage layer of transparent, its material be third rare be resin.Form a layer insulating 32, its material such as silicon dioxide, silicon nitride on flatness layer 33 surfaces again.This flatness layer 33 and insulation course 32 cover the whole shading matrix zone 44 and the chromatic filter layer 34 of conductive shading 35, but will reserve the two end portions of the first conduction shading line 42.At last, form one deck electrode layer 31 on insulation course 32, and cover the exposed part of the first conduction shading line 42, its material generally is a nesa coating, for example is ITO or IZO, is used for driving the arrangement of liquid crystal molecule.

Claims

1. a colored filter is used for panel of LCD, it is characterized in that comprising: a transparency carrier;

One conductive shading, be arranged on this transparency carrier, this conductive shading is parallel to each other by many and the first conduction shading line that extends towards first direction and many are parallel to each other and are formed towards the second conduction shading line that second direction is extended, form a pixel region in the middle of adjacent two first conduction shading lines and the adjacent two second conduction shading lines, the two ends of the first conduction shading line are passed through time pixel region and are continued to stretch out;

One colorized optical filtering district is formed at pixel region above-mentioned time;

One flatness layer is formed in the colorized optical filtering district, covers whole colorized optical filtering district;

One electrode layer is formed on this flatness layer top, and its length is longer than flatness layer, and extends and cover the two end portions that the first conduction shading line passes through time pixel region towards first direction, makes electrode layer and first conduct electricity the shading line and is connected.

2. colored filter as claimed in claim 1 is characterized in that: also be coated with an insulation course on the described flatness layer.

3. colored filter according to claim 1 and 2 is characterized in that: the material of this flatness layer be third rare be resin.

4. colored filter according to claim 2 is characterized in that: this insulation course is silicon dioxide or silicon nitride.

5. colored filter as claimed in claim 1 or 2 is characterized in that: this transparency carrier is glass substrate or transparent polymer material substrate.

6. colored filter according to claim 1 and 2 is characterized in that: the material of this first conduction shading line and the second conduction shade line is a chromium.

7. colored filter according to claim 1 and 2 is characterized in that: this electrode layer is tin indium oxide or indium zinc oxide.

8. colored filter according to claim 1 and 2 is characterized in that: above-mentioned first direction is vertical with second direction.