CN201311532Y

CN201311532Y - Color filter

Info

Publication number: CN201311532Y
Application number: CNU2008202140478U
Authority: CN
Inventors: 朱保平
Original assignee: BYD Co Ltd
Current assignee: Shenzhen Holitech Optoelectronics Co Ltd
Priority date: 2008-11-27
Filing date: 2008-11-27
Publication date: 2009-09-16
Anticipated expiration: 2018-11-27

Abstract

The utility model discloses a color filter, which comprises a flat layer, coloring layers, black matrix, a light-transmitting substrate and a common electrode layer, wherein the black matrix is provided with a plurality of grid points arranged on the surface of the light-transmitting substrate, the coloring layers are arranged in the middle of the grid points of the black matrix, the flat layer is arranged on the coloring layers and the black matrix, and the common electrode layer is arranged on the flat surface provided by the flat layer. At least one of the light-transmitting areas of the three coloring layers is 1.1-1.6 times of that of one o f any other coloring layer, and the total of the light-transmitting areas of the coloring layers is equal to a designed pixel area value of a liquid crystal display. Because at least one of the light-transmitting areas of the three coloring layers is 1.1-1.6 times of that of one of any other coloring layer, light flux of at least one coloring layer is increased, and then the problem of disproportion of light flux transmitting through the three coloring layers caused by deviation of the backlight spectrum and three primary colors spectrum of the color filter can be controlled, thereby achieving the purpose of adjusting LCD white balance and avoiding LCD color cast.

Description

A kind of colored filter

[technical field]

The utility model relates to a kind of colored filter, relates in particular to a kind of colored filter that the LCD white balance is avoided the LCD colour cast that can be used for regulating.

[background technology]

LCD (Liquid Crystal Display, be called for short LCD) be a kind of passive type display device, the colorize of its panel generally is by colored filter (Colour Filter, be called for short CF) white light is converted into red, green, blue (being called for short R-G-B) three primary colors light beam, and cooperate other assemblies such as liquid crystal layer therebetween to reach the effect that shows the different color image.

In the structure of colored filter, dyed layer is disposed in the middle of the net point of black matrix", and the dot matrix that is made of one group of adjacent redness, green, blue-colored layer is called a pixel, and the arbitrary dyed layer that constitutes pixel is called a sub-pix of this pixel.Colored filter is made of plurality of pixels, and the area of each pixel drives way and the decision of functional areas area by LCD.Red in the existing colored filter one pixel, green, blue three sub-pixs are divided a pixel equally, the area ratio is 1: 1: 1, there is white balance colour cast (red partially, green partially or inclined to one side indigo plant) phenomenon in the LCD that uses existing colored filter to make under "on" position, the polaroid offset all can not be corrected about reaching by the adjusting liquid crystal retardation.Find after deliberation, white balance colour cast phenomenon takes place LCD is because LCD backlight spectrum and colored filter three primary colors spectrum generation deviation, causing has reinforcement to a certain or two kinds of colors, and other colors are had abated effect, causes to see through trichromatic flux ratio imbalance.

[summary of the invention]

The purpose of this utility model is to provide a kind of new colored filter, to overcome existing colored filter causes LCD white balance colour cast (red partially, green partially or inclined to one side indigo plant) phenomenon under "on" position problem.

In order to solve the problems of the technologies described above, the utility model is achieved through the following technical solutions:

A kind of colored filter, comprise flatness layer, the dyed layer that shows R-G-B three primary colors zone, black matrix", printing opacity substrate and common electrode layer, wherein black matrix" has a plurality of net points, be configured on the printing opacity substrate surface, dyed layer is disposed in the middle of the black matrix" net point, flatness layer is disposed at dyed layer and above the black matrix", common electrode layer is disposed on the flat surfaces that flatness layer provides, in the dyed layer in described demonstration three primary colors zone, have at least a dyed layer transmission region area be other arbitrary dyed layer transmission region areas 1.1-1.6 doubly, the elemental area value that the dyed layer transmission region area sum in described demonstration three primary colors zone designs for LCD.

In the technical solution of the utility model, since have at least in red in the described colored filter, green, blue three dyed layers dyed layer transmission region area be other arbitrary dyed layer transmission region areas 1.1-1.6 doubly, increased the luminous flux of at least one dyed layer, can regulate because the flux ratio imbalance that sees through three dyed layers that backlight spectrum and colored filter three primary colors spectrum generation deviation cause is regulated the purpose that the LCD white balance is avoided the LCD colour cast thereby reach.

[description of drawings]

Fig. 1 is the structural representation of a kind of preferred embodiment of the utility model;

[embodiment]

In order to make the purpose of this utility model, technical scheme and advantage clearer,, the utility model is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.

When white balance colour cast phenomenon took place LCD, utilization YC tester (is the tester of BM-7 such as model) or other instruments were measured the chromaticity coordinate value and the white picture brightness of full frame redness, green, blueness.Chromaticity coordinate value and brightness with the corresponding colored filter redness of spectrophotometer measurement, green, blueness.Then LCD chromaticity coordinate and colored filter chromaticity coordinate are compared, calculate chromaticity coordinate and change.The variation of forward shows that backlight has booster action to this chromatograph, and the variation of negative sense shows that backlight has abated effect to this chromatograph.The degree that changes shows the power of backlight to the chromatograph influence.Dyed layer area with chromaticity coordinate positive change maximum is 1, according to backlight to the strong and weak degree of dyed layer influence design other dyed layer areas be 1.1-1.6 doubly.

Please refer to shown in Figure 1, a kind of preferred embodiment of colored filter, comprise printing opacity substrate 1, black matrix" 2, red colored layer 3, green coloring layer 4, blue-colored layer 5, flatness layer 6, common electrode layer 7, wherein black matrix" 2 has a plurality of net points, be configured on printing opacity substrate 1 surface, dyed layer is disposed in the middle of black matrix" 2 net points, flatness layer 6 is disposed at dyed layer and above the black matrix" 2, common electrode layer 7 is disposed on the flat surfaces that flatness layer 6 provided, in the dyed layer in described demonstration three primary colors zone, red, green, blue three dyed layer transmission region area ratios are designed to 1.3: 1: 1.1, the elemental area value that the dyed layer transmission region area sum in demonstration three primary colors zone designs for LCD, described common electrode layer 7 is the drive electrode of LCD, adopt tin indium oxide (Indium-tin Oxide, be called for short ITO) electrode, described black matrix" 2 plays the effect that shading prevents that photocurrent from revealing, and described flatness layer 6 plays and prevents that material is excessive, improve the effect of surface.

Although top detailed description preferred embodiment of the present utility model, but should be understood that many distortion of basic inventive concept clearly, that tell about to those skilled in the art and modification all drop within the spirit and scope of the present utility model of claims qualification here.

Claims

1, a kind of colored filter, comprise flatness layer, the dyed layer that shows R-G-B three primary colors zone, black matrix", printing opacity substrate and common electrode layer, wherein black matrix" has a plurality of net points, be configured on the printing opacity substrate surface, dyed layer is disposed in the middle of the black matrix" net point, flatness layer is disposed at dyed layer and above the black matrix", common electrode layer is disposed on the flat surfaces that flatness layer provides, it is characterized in that, in the dyed layer in described demonstration three primary colors zone, have at least a dyed layer transmission region area be other arbitrary dyed layer transmission region areas 1.1-1.6 doubly, the elemental area value that the dyed layer transmission region area sum in described demonstration three primary colors zone designs for LCD.

2, colored filter according to claim 1 is characterized in that, comprises at least one red piece, green block and blue piece in the described dyed layer.

3, colored filter according to claim 1 and 2 is characterized in that, Red Green Blue transmission region area ratio is 1.3: 1: 1.1 in the described dyed layer.

4, colored filter according to claim 1 is characterized in that, described common electrode layer is the ITO electrode.