JP4399899B2 - Toning method and toning apparatus for color resist for color filter - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to toning of a colored resist used for manufacturing a color filter for a color liquid crystal display device and a color filter for a color video camera, and in particular, a color filter that does not require trial and error toning work. The present invention relates to a color matching method and a color matching device for a colored resist.
[0002]
[Prior art]
In the color filter, picture elements are regularly arranged on a glass substrate using, for example, red, green, and blue colored resists.
The color characteristics of these picture elements are important characteristics that determine the color performance of devices such as color liquid crystal display devices and color video cameras.
This color characteristic is expressed and handled by colorimetric values such as chromaticity coordinate values (x, y) obtained from tristimulus values X, Y, and Z of the CIE display system. Data is also handled at the same time.
[0003]
Therefore, when a target chromaticity coordinate value (x, y) is given in the manufacture of the color filter, the spectral transmittance matches the target chromaticity coordinate value (x, y). If the color material is toned and used, a target color filter can be manufactured.
[0004]
However, even if a target chromaticity coordinate value (x, y) is given, the spectral transmittance is not uniquely determined from the chromaticity coordinate value. Toning the colored resist corresponding to the prototype of No. 1, and measuring the spectral transmittance of the colored resist corresponding to the toned first-stage prototype, tristimulus values X, Y, Z and chromaticity coordinate values x, Spectral transmittance data is created by trial and error such that y is calculated, compared with the target chromaticity coordinate values (x, y), and the prototype is repeated until they match.
For this reason, many materials and labor are required for the color matching of the colored resist.
[0005]
In addition, it is necessary to balance the three colors of red, green, and blue coloring resists used in the color filter, so even if the toning of one color is completed, the balance with the other colors is not good. Trial and error work such as redoing the colors may be continued.
[0006]
[Problems to be solved by the invention]
The present invention has been made in view of such a situation, and in the toning of the color resist for color filter, the value (x, y) (target value) of the chromaticity coordinate of the color resist for color filter that is a target. In order to create spectral transmittance data for the colored resist, the target color can be obtained without trial and error such as actually making a colored resist prototype and measuring the spectral transmittance data. A toning method and a toning apparatus for a color resist for a color filter, which can easily create spectral transmittance data of a color resist for a filter, and can easily create a blending ratio of the color resist for blending The issue is to provide.
[0007]
[Means for Solving the Problems]
The present invention relates to a color toner coloring method for color filters,
1) Create spectral transmittance data that has a relationship between the target chromaticity coordinate value (target value) of the color resist for color filter and the color of the condition, and the chromaticity coordinate value (setting value) of the spectral transmittance data. And
2) Using three types of blending color resists with known spectral transmittance data having chromaticity coordinate values in a relationship surrounding the chromaticity coordinate values (setting values) on the xy chromaticity diagram, Create a blending ratio of the three color resists for blending in order to obtain a color filter colored resist with a degree coordinate value (setting value),
3) The three types of coloring resists for blending are blended to the blending ratio,
Toning method of color resist for color filter characterized by toning color resist for color filter.
[0008]
Further, the present invention relates to a color filter color resist toning device for color filters,
1) Supply device for colored resist for blending,
2) Automatic weighing and mixing equipment,
3) Input device,
A color resist toning device for a color filter for color filters.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail.
FIG. 1 is a schematic view for explaining one embodiment of a color-tone adjustment method for a color filter coloring resist according to the present invention.
In FIG. 1, the value (x, y) (target value) of the chromaticity coordinate of the target colored resist is, for example, requested by the customer. Taking red as an example, this target color The value of the degree coordinate (red) (11) is not accompanied by spectral transmittance data.
[0010]
In FIG. 1, the corrected spectral transmittance data (red) (12) uses, for example, the spectral transmittance data of the coloring resist for compounding (red 1) as the initial value of the spectral transmittance data. This is corrected spectral transmittance data (red) obtained by correcting the numerical value of the transmittance at an arbitrary wavelength aiming at the chromaticity coordinate value (x, y) (target value) of the target colored resist.
[0011]
For example, in the visible light wavelength range from 400 nanometers to 700 nanometers, the numerical value of the spectral transmittance at each wavelength of every 10 nanometers is corrected, and 31 numerical values are corrected spectral transmittance data (red) (12) And Then, the tristimulus values X, Y, Z and the chromaticity coordinate values x, y of the corrected spectral transmittance data (red) (12) are obtained by the chromaticity calculator (13). Tristimulus values X, Y, Z (red) and chromaticity coordinate values (red) x, y obtained by calculation, and chromaticity coordinate values x, y (target values) of a given target color resist ) And the colorimetric value is determined (14).
[0012]
If the difference between the colorimetric values exceeds the allowable value, the corrected spectral transmittance data (red) (12) is corrected again. If the difference between the colorimetric values is within an allowable value, the chromaticity coordinate value (x, y) (target value) of the colored resist, which is the target value based on the corrected spectral transmittance data (red), and the condition color, etc. The relevant spectral transmittance data is used.
Further, the chromaticity coordinate value of the corrected spectral transmittance data (red) (12) is the chromaticity coordinate value (set value) (red) as shown in (15) of FIG.
[0013]
As described above, the chromaticity coordinate value (target value) of the color resist coloring resist for the target and the spectral transmittance data having the same color relationship as the condition, and the chromaticity coordinate value (setting of the spectral transmittance data) Value).
If a personal computer that has been popular in recent years is used, the tristimulus values X, Y, Z and the chromaticity coordinate values x, y can be calculated in about 1 second. It can be easily created while checking the transition of the tristimulus values X, Y, Z and the chromaticity coordinate values x, y by changing each one.
[0014]
Next, the coloring resists for compounding (red 1), (red 2), and (red 3) are mixed with a different red pigment, a dispersant, an adhesive, and a coating stabilizer in an organic solvent or water at a certain ratio. Liquid.
These color resists for blending are confirmed to cause no aggregation or separation even if they are mixed with each other in advance. For each color resist for blending, five to thirty kinds of color densities are determined, and a spectrum at that color density is determined. The transmittance is measured with a spectroscopic analyzer, and each is stored in a storage device as spectral transmittance data (16) of the colored resist for compounding (red 1), (red 2), and (red 3).
[0015]
For example, 0.1%, 0.2%, 0.3%, 0.5%, 0.7%, 1.0%, 2.0%, 3.0%, 5.0%, 7.0 %, Each spectral transmittance at a solid content ratio proportional to the color density is measured, and the spectral transmittance data (16) is stored in a storage device.
[0016]
FIG. 2 shows, for example, values of chromaticity coordinates (setting values) (red) (21) and coloring resists (red 1), (red 2), (red) on the xy chromaticity diagram of the CIE display system. FIG. 3 is a relationship diagram of chromaticity coordinate values (22), (23), and (24) in 3).
As the coloring resists (red 1), (red 2), and (red 3) for blending, the relationship of surrounding the chromaticity coordinate values (setting values) (red) (21) on the xy chromaticity diagram of the CIE display system Three types of coloring resists (red 1), (red 2), and (red 3) with known spectral transmittance data having chromaticity coordinate values (22), (23), and (24) are used.
Then, the composition of three types of color resists (red 1), (red 2), and (red 3) for obtaining color resists for color filters having chromaticity coordinate values (set values) (red) (21) The ratio is created using these spectral transmittance data (16).
[0017]
In the present invention, there are three types of coloring resists for blending, but any number may be selected as long as the number is three or more. However, since it takes much time to create the blending ratio, the accuracy hardly changes. Therefore, it is preferable in terms of processing time to create three blending ratios.
[0018]
As a method for preparing the blending ratio, if the blending amounts of the three types of blending colored resists (red 1), (red 2), and (red 3) are r1, r2, and r3, the three stimuli of the blended colored resists Values X, Y, and Z can be expressed as follows using functions fx, fy, and fz.
X = fx (r1, r2, r3)
Y = fy (r1, r2, r3)
Z = fz (r1, r2, r3)
R1, r2, and r3 satisfying these equations are obtained, but since the function has a high-order term and cannot be expressed by a clear equation, its solution is obtained by the scissors method, Newton-Raphson method, or the like.
[0019]
In this example, the spectral transmittance data (16) when the color density of the colored resist for blending (red 1), (red 2), and (red 3) is changed is measured in advance, and blending calculation is performed. Spectral transmittance data when r1, r2, and r3 are changed little by little on the device (17) are synthesized, and tristimulus values are calculated from the synthesized spectral transmittance data.
Then, the difference between the tristimulus values X, Y, and Z of the chromaticity coordinate values (setting values) (red) and (15) created earlier is obtained as ΔX, ΔY, and ΔZ, and the differences are within the allowable values. In this case, r1, r2, and r3 at that time are determined as blending amounts.
[0020]
This calculation may not converge. In this case, the corrected spectral transmittance data (red) (12) is re-corrected.
The blending amounts r1, r2, and r3 thus obtained are converted into blending ratios (18), and are combined with the tristimulus values and chromaticity coordinate values obtained at the end of the blending amount calculation (17 ) In the storage device.
[0021]
Hereinafter, similarly, for the green resist, the blending amounts g1, g2, and g3 of the coloring resist for blending are obtained, converted into blending ratios, and blended together with the tristimulus values and chromaticity coordinate values obtained at the end of the blending amount calculation. Store in the storage device of the computing device.
For the blue resist, the blending amounts b1, b2, and b3 of the color resist for blending are obtained and converted to the blending ratio, and the blending calculation is performed together with the tristimulus values and chromaticity coordinate values obtained at the end of the blending amount calculation. Store in the storage device of the device.
[0022]
The red, green, and blue resist chromaticity coordinate values are displayed on the display device of the blending calculator (17), the color balance of the red, green, and blue resists is confirmed, and if necessary, the corrected spectral transmittance is corrected. Data (12) will be recalculated after re-creation. If the color balance of the red, green, and blue resists is appropriate, the required resist amount is given, converted into the required amount of the colored resist for blending, sent to an automatic weighing / mixing device, and weighed / mixed. A color resist for color filter having spectral transmittance data having a relationship between a value of chromaticity coordinates (target value) to be performed and a color having the same condition is obtained.
[0023]
FIG. 3 is an explanatory diagram showing an embodiment of a color resist color matching device for color filter according to the present invention.
As shown in FIG. 3, the color filter color resist toning device includes a blending color resist supply device (35), an automatic metering / mixing device (36), and an input device (37). The compounding color resist supply device (35) includes a compounding color resist tank (32), a flow path (33), a discharge valve (34), and the like.
[0024]
【The invention's effect】
Conventionally, prototype work has been carried out ten times or more in order to color a colored resist having spectral transmittance data that has a relationship between a target chromaticity coordinate value (target value) and a condition color, etc. By utilizing the color filter color matching method according to the invention, the trial production can be completed once or twice.
That is, the present invention provides a color resist coloring method for color filters,
1) Create spectral transmittance data that has a relationship between the target chromaticity coordinate value (target value) of the color resist for color filter and the color of the condition, and the chromaticity coordinate value (setting value) of the spectral transmittance data. And
2) Using three types of blending color resists with known spectral transmittance data having chromaticity coordinate values in a relationship surrounding the chromaticity coordinate values (setting values) on the xy chromaticity diagram, Create a blending ratio of the three color resists for blending to obtain a color filter colored resist with a degree coordinate value (setting value),
3) Since the three color resists for blending are mixed to the blending ratio and the color resist for color filter is toned,
When the target chromaticity coordinate value (x, y) (target value) of the color resist for the color filter is given, in order to create spectral transmittance data of the color resist, a colored resist is actually manufactured as a prototype. Regardless of trial and error work such as measuring the spectral transmittance data, it is possible to easily create the spectral transmittance data of the target color resist for color resist, This is a toning method for a color resist for a color filter that can be easily produced.
[0025]
Further, the present invention relates to a color filter color resist toning device for color filters,
Since it is a color filter color resist toning device comprising 1) a colored resist supply device for blending, 2) an automatic metering / mixing device, and 3) an input device, the chromaticity of the target color resist for color filter When coordinate values (x, y) (target values) are given, trial and error such as actually producing a colored resist and measuring the spectral transmittance data in order to create spectral transmittance data of the colored resist. Color filter coloring that can easily create the spectral transmittance data of the target color filter coloring resist and easily create the blending ratio of the coloring resist for blending, regardless of the typical work It becomes a resist toning device.
[Brief description of the drawings]
FIG. 1 is a schematic view for explaining one embodiment of a color-tone adjusting method for a color resist for color filter according to the present invention.
FIG. 2 shows the values of chromaticity coordinates (set values) (red) on the xy chromaticity diagram and the chromaticity coordinate values of the coloring resists for compounding (red 1), (red 2), and (red 3). It is a relationship diagram.
FIG. 3 is an explanatory view showing an embodiment of a color resist color matching device for color filter according to the present invention.
[Explanation of symbols]
11 ... Target chromaticity coordinate value (red)
12 ... Corrected spectral transmittance data (red)
13 ... Chromaticity calculation device 14 ... Colorimetric value determination 15 ... Chromaticity coordinate value (setting value) (red)
16 ... Spectral transmittance data 17 of the coloring resists (red 1), (red 2), and (red 3) for blending 17 ... blending calculator 18 ... blending ratio 21 ... Value of chromaticity coordinates on xy chromaticity diagram (setting) Value) (red)
22, 23, 24... Color resist for blending (red 1), (red 2), (red 3) on the xy chromaticity diagram 32... Color resist tank for blending 33... ... Discharge valve 35 ... Colored resist supply device 36 for blending ... Automatic metering / mixing device 37 ... Input device

Claims (2)

In the toning method of the colored resist for the color filter,
1) Create spectral transmittance data that has a relationship between the target chromaticity coordinate value (target value) of the color resist for color filter and the color of the condition, and the chromaticity coordinate value (setting value) of the spectral transmittance data. And
2) Using three types of blending color resists with known spectral transmittance data having chromaticity coordinate values in a relationship surrounding the chromaticity coordinate values (setting values) on the xy chromaticity diagram, Create a blending ratio of the three color resists for blending in order to obtain a color filter colored resist with a degree coordinate value (setting value),
3) The three types of coloring resists for blending are blended to the blending ratio,
A method for toning a color resist for color filter, characterized by toning a color resist for color filter. A toning device for use in the toning method according to claim 1,
1) Supply device for colored resist for blending,
2) Automatic weighing and mixing equipment,
3) An input device for inputting arbitrary spectral transmittance data ;
4) A chromaticity calculation device that calculates a chromaticity coordinate value from arbitrary spectral transmittance data and compares it with a target chromaticity coordinate value given in advance.
5) A blending calculation device that calculates blending ratios of a plurality of colored resists by the toning method according to claim 1 by inputting chromaticity coordinate values.
A toning apparatus for a color resist for a color filter, comprising:

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