CN200983018Y

CN200983018Y - Color filtering slice

Info

Publication number: CN200983018Y
Application number: CN 200620017591
Authority: CN
Inventors: 杨会良; 邱耀; 陈学刚; 何志奇
Original assignee: BYD Co Ltd
Current assignee: Shenzhen Holitech Optoelectronics Co Ltd
Priority date: 2006-06-23
Filing date: 2006-06-23
Publication date: 2007-11-28
Anticipated expiration: 2016-06-23

Abstract

The utility model disclosed a colored light filter which comprises a transparent base plate, a colored filter layer and an electrode layer, the colored filter layer and the electrode layer are formed on the transparent base plate in sequence, transparent electrodes are included in the electrode layer, and at least a strip of conductive wire which is electrically connected with the transparent electrodes is also included in the electrode layer. Furthermore, the distributed position of the conductive wire is positively corresponding to the distributed position of a black matrix on a direction perpendicular to the transparent base plate. The colored light filter provided by the utility model improves crossfire phenomenon and increases the quality of displaying image due to electrical resistance reduction of the electrode layer through metal conductive wire, and meanwhile the patterns of the metal conductive wire and the black matrix are in squaring coincidence, thereby the shaded effect of the black matrix area is better, and the color contrast of the colored light filter is enhanced.

Description

Colored filter

[technical field]

The utility model relates to a kind of colored filter, particularly a kind of colored filter that is used for LCD.

[background technology]

LCD is a kind of passive type display device, for reaching the colored effect that shows, need provide colored filter for it, its effect is that the white light that will pass through is converted into the Red Green Blue light beam, and (Thin Film Transistor, 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 black matrix" district and time pixel (sub pixel) between upper substrate and indium-tin oxide electrode.

Fig. 1 is a prior art colorful filter structure synoptic diagram, and this colored filter comprises: glass substrate 15, black matrix" district 14, inferior pixel 13, flatness layer 12 and electrode layer 11.Inferior pixel 13 is to be made of red pixel 131, green pixel 132, blue time 133 3 kinds of optical filtering pixels of pixel that organic colour-wash makes, recurring rule is arranged these three kinds of optical filtering pixels to pass through Red Green Blue light respectively on this glass substrate 15, stops that the light of other wavelength passes through.Black matrix" district 14 is arranged between this three optical filterings pixel, its effect is that blocking is by the light between three optical filtering pixels, prevent leakage of light and stop coloured material to mix, electrode layer 11 then cooperates with tft array, control this time pixel 13 respectively filter the light of pixel by number to show different colors.

The general existing black matrix" district 14 that utilizes the metal/oxide structure, the shading rate deficiency, can't provide good light to cover to thin film transistor (TFT), make the background color of display pannel only present mazarine, can't utilize the background color of black to increase the comparative of color visually.

Simultaneously, when panel developed towards the large scale direction at present, because electrode layer 11 is formed on the colored filter substrate 15 comprehensively, panel size was big more, and resistance value is big more, and this moment, signal caused decay because of interference, noise etc. easily; When resistance value increases, reduce successively, for example, light back C point, add the voltage increase that A in front order, and the A point of not desiring to light is lighted along each picture element institute making alive of direction of current; Voltage when perhaps lighting owing to the A point is excessive, makes the B point corresponding liquid crystal generation part deflection adjacent with the A point to cause crosstalk phenomenon, and picture quality is bad when causing showing, influences qualification rate.

[summary of the invention]

For overcoming the shortcoming of above-mentioned prior art, fundamental purpose of the present invention is to provide a colored filter, and this colored filter can reduce the resistance value of electrode layer, improves the crosstalk phenomenon of LCD, and improves the display frame quality.

Another object of the present invention is to provide a colored filter, this colored filter can increase the optical concentration (OD value) of black matrix", to increase the color contrast of Red Green Blue.

For realizing above-mentioned fundamental purpose, the utility model provides a kind of colored filter, comprise: transparency carrier, chromatic filter layer and electrode layer, chromatic filter layer is arranged on the transparency carrier, inferior pixel in the chromatic filter layer is surrounded by the black matrix" district, electrode layer is positioned on the chromatic filter layer, comprises at least one conductor wire in the electrode layer.

Preferably, transparency electrode is the ITO electrode, and described conductor wire is a chromium electrode.

Conductor wire is the conductor wire that is parallel to each other.

Further preferably, chromatic filter layer comprises pixel a plurality of times, is formed with black matrix" around described the pixel, and the distributing position of described conductor wire aligns on the direction perpendicular to transparency carrier mutually with the distributing position of black matrix".

For realizing another above-mentioned purpose, the utility model provides a kind of colored filter, comprise transparency carrier, chromatic filter layer and electrode layer, described chromatic filter layer and electrode layer are formed on the transparency carrier successively, described chromatic filter layer comprises pixel a plurality of times, be formed with black matrix" around described the pixel, comprise transparency electrode in the described electrode layer, also comprise at least one conductor wire that is electrically connected with transparency electrode in the described electrode layer, the distributing position of described conductor wire aligns on the direction perpendicular to transparency carrier mutually with the distributing position of black matrix".

Preferably, conductor wire is the light-proofness conductor wire.

Further preferably, the pattern of conductor wire overlaps with the pattern of black matrix".

Black matrix" comprises many of the first direction shading lines that are parallel to each other, and the distribution shape of described conductor wire is identical with black matrix" with size.

Black matrix" comprises the many shading lines that are parallel to each other of many of first direction shading lines that are parallel to each other and the second direction vertical with first direction, and the distribution shape of described conductor wire is identical with black matrix" with size.

Colored filter also comprises the flatness layer that is formed between chromatic filter layer and the electrode layer.

The beneficial effects of the utility model are:

Colored filter provided by the utility model owing to adopt metal conductive wire in the electrode layer, can reduce the resistance value of electrode layer, just can improve the crosstalk phenomenon of LCD, improves the display frame quality.

Colored filter provided by the utility model, owing to include with the pattern in black matrix" district in the electrode layer and align the conductor wire that overlaps up and down, and the material of metal conductive wire is that chromium etc. is the light-proofness material, therefore makes that the shaded effect in black matrix" district is better, has increased the color contrast of LCD.

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

[description of drawings]

Fig. 1 is the structural drawing of existing colored filter;

Fig. 2 is the structural drawing of the colored filter of the utility model embodiment one;

Fig. 3 is the structural drawing of electrode layer of the colored filter of the utility model embodiment two;

Fig. 4 is the another kind of structural drawing of electrode layer of the colored filter of the utility model embodiment two.

11. electrode layers among the figure, 12. flatness layers, 13. pixels, 14. black matrix" districts, 15. transparency carriers, 21. metal conductive wire, 22. transparency conducting layers, 131. red pixels, 132. green pixels, 133. blue pixels.

[embodiment]

Embodiment one, and as shown in Figure 2, the colored filter of the utility model embodiment one comprises: transparency carrier 15, black matrix" district 14, flatness layer 12, inferior pixel 13 and electrode layer 11.Transparency carrier 15 adopts transparent glass substrate in the present embodiment.Chromatic filter layer, be arranged on the transparency carrier 15, comprise the inferior pixel 13 that black matrix" district 14 and black matrix" district 14 are surrounded, black matrix" district 14 is made up of black light screening materials such as chromium or resins, mode by sputter or coating is formed on the clear glass, forms matrix pattern via operations such as exposure, developments again; Inferior pixel 13, by trichromatic red the pixels 131 of technological process sequentially built such as coating, exposure, development, green pixel 132,

blue time pixel

133,13 of inferior pixels stop that by Red Green Blue light the light of other wavelength passes through.Flatness layer 12 comprehensively is formed at the top of chromatic filter layer, is used to protect the optical filtering pixel of Red Green Blue, makes color filter surfaces be tending towards planarization simultaneously.Electrode layer 11, comprise metal conductive wire 21 and transparency conducting layer 22 (sull ITO), be covered on the flatness layer 12, transparency conducting layer 22 is arranged alternately in the same plane with metal conductive wire 21, has constituted electrode layer 11 jointly, and wherein the material of metal conductive wire 21 is a chromium, because transparency conducting layer 22 is a sull, its resistance is much larger than the resistance of metal, if metal conductive wire 21 is in parallel with transparency conducting layer 22, just can reduce the resistance of entire electrode layer 11.

Because the resistivity of metal less than the resistivity of transparent metal oxide film, makes the resistance of electrode layer 11 descend, thereby can reach the crosstalk phenomenon that improves LCD, and improves the effect of display frame quality.

Embodiment two, be with the difference of embodiment one, metal conductive wire 21 is the light-proofness conductor wire, its distributing position aligns on the direction perpendicular to transparency carrier mutually with the distributing position in black matrix" district 14, and the shape of metal conductive wire 21 and big or small identical with the black matrix" district 14 that aligns.

The shading line in black matrix" district 14 is parallel lines, and as shown in Figure 3, metal conductive wire 21 is arranged into parallel lines in this electrode layer 11, and its below is aligned with the shading line in black matrix" district 14, and shape is all identical with size.Be transparency conducting layer 22 between the metal conductive wire 21, the formation order of metal conductive wire 21 and transparency conducting layer 22 is unqualified, all finishes by conventional steps such as coating, exposure, developments.

Because the resistivity of metal less than the resistivity of transparency conducting layer 22, makes the resistance of electrode layer 11 descend, thereby can reach the crosstalk phenomenon that improves LCD, and improves the effect of display frame quality; Simultaneously, because metal conductive wire 21 is made up of the black light screening material, its below is aligned with black matrix" district 14, owing to increase one deck black light shield layer, makes that the shaded effect in black matrix" district 14 is better, thereby makes that the contrast of color is higher.

The shading line in black matrix" district 14 also can be made into latticed, then in this electrode layer 11, as shown in Figure 4, metal conductive wire 21 is designed to latticed, its below is aligned with black matrix" district 14, and shape is all identical with size, and transparency conducting layer 22 is filled between the grid of metal conductive wire 21 compositions.

Colored filter provided by the utility model, owing to adopt metal conductive wire 21 in the electrode layer 11, and the material of metal conductive wire 21 is the light-proofness material, and align up and down with the pattern in black matrix" district 14 and to overlap, so not only can reduce the resistance value of electrode layer 11, improve the crosstalk phenomenon of LCD, improve the display frame quality, and make that the shaded effect in black matrix" district 14 is better, increased the color contrast of LCD.

Above content be in conjunction with concrete preferred implementation to further describing that the present invention did, can not assert that concrete enforcement of the present invention is confined to these explanations.For the general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, can also make some simple deduction or replace, all should be considered as belonging to the scope of patent protection that the present invention is determined by claims of being submitted to.

Claims

1. colored filter that is used for LCD, comprise: transparency carrier, chromatic filter layer and electrode layer, described chromatic filter layer and electrode layer are formed on the transparency carrier successively, comprise transparency electrode in the described electrode layer, it is characterized in that: also comprise at least one conductor wire that is electrically connected with transparency electrode in the described electrode layer.

2. colored filter as claimed in claim 1 is characterized in that: described transparency electrode is the ITO electrode, and described conductor wire is a chromium electrode.

3. colored filter as claimed in claim 1 or 2 is characterized in that: described conductor wire is the conductor wire that is parallel to each other.

4. colored filter as claimed in claim 2, it is characterized in that: described chromatic filter layer comprises pixel a plurality of times, be formed with black matrix" around described the pixel, the distributing position of described conductor wire aligns on the direction perpendicular to transparency carrier mutually with the distributing position of black matrix".

5. colored filter as claimed in claim 4 is characterized in that: described conductor wire is the light-proofness conductor wire.

6. colored filter as claimed in claim 5 is characterized in that: the pattern of described conductor wire overlaps with the pattern of black matrix".

7. colored filter as claimed in claim 6 is characterized in that: described black matrix" comprises many of the first direction shading lines that are parallel to each other, and the distribution shape of described conductor wire is identical with black matrix" with size.

8. colored filter as claimed in claim 6, it is characterized in that: described black matrix" comprises the many shading lines that are parallel to each other of many of first direction shading lines that are parallel to each other and the second direction vertical with first direction, and the distribution shape of described conductor wire is identical with black matrix" with size.

9. as each described colored filter among the claim 4-8, it is characterized in that: also comprise the flatness layer that is formed between chromatic filter layer and the electrode layer.