JPH07209513A - Production of color filter for liquid crystal display - Google Patents

Abstract

PURPOSE:To easily produce the color filter for a liq. crystal display by utilizing the optical shuttering function of each liq. crystal display picture element provided in a monochromatic liq. crystal display panel in the pattern exposure to form a color filter pattern. CONSTITUTION:A red pigment-dispersed photoresist is applied on the surface of the transparent electrode plate A2 of a monochromatic liq. crystal display panel A to form a photoresist layer 14. Every two liq. crystal picture elements Pc are driven in a light transmitting state, the photoresist layer is irradiated with UV from a light source B to form a photoset part 14a, the unset part 14b is developed and removed to form a first red filter pattern R on a transparent substrate 11, and second and third filter patterns G and B are successively formed in the same way on the substrate 11.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention provides a liquid crystal display device directly on the surface of the monochrome liquid crystal display panel by utilizing the optical shutter function of display pixels provided in the monochrome liquid crystal display panel used for the monochrome liquid crystal display device. The present invention relates to a method for manufacturing a color filter for a liquid crystal display device that forms a color filter.

[0002]

2. Description of the Related Art A conventional method for manufacturing a color filter for a liquid crystal display device uses an organic material or an inorganic material to produce a red (R
ed), green (Green), and blue (Blue) light three primary color filter patterns are formed on the transparent substrate. In particular, regarding organic materials, techniques for forming them by a pigment dispersion method, a dyeing method, a printing method, etc. have been established.

[0003]

However, in the colored formation of the filter pattern, an optical mask for pattern exposure is required, and the manufacturing of the optical mask and the register alignment in the exposure must be performed with high accuracy, which makes the manufacturing troublesome. Met.

The present invention uses a liquid crystal display panel for a monochrome liquid crystal display device without a color filter, or a liquid crystal display panel for a color liquid crystal display device but without a color filter itself. Then, the optical shutter function of each liquid crystal display pixel provided in the liquid crystal display panel is used for pattern exposure to form a color filter pattern to form a color filter pattern, and thus a color for a liquid crystal display device can be easily formed. It is in manufacturing filters.

[0005]

According to the present invention, a red (Re) is formed on the surface of the transparent electrode plate A ₂ on the front side of the monochrome liquid crystal display panel A.
d) a first photoresist layer forming step of forming a photoresist layer 14 by applying a pigment-dispersed photoresist having one of the color tones of each of the color pigments of green, green, and blue; A first display pixel driving step in which at least two display pixels arranged in the vertical direction or the horizontal direction out of all the display pixels of the monochrome liquid crystal display panel A which are regularly arranged in the vertical and horizontal directions are driven to the light transmission state; A light source unit E arranged on the back side of the monochrome liquid crystal display panel A
A first exposure and curing step of irradiating a predetermined amount of ultraviolet light on the photoresist layer 14 on the display pixel in the light transmitting state and exposing and driving the display pixel in the light transmitting state. A pixel filter release step, a first filter pattern forming step by a first developing and removing step of developing and removing an uncured portion of the photoresist layer 14, and a transparent electrode plate A ₂ surface on the front side of the monochrome liquid crystal display panel A. A second photoresist layer forming step of forming a photoresist layer 15 by applying a pigment-dispersed photoresist having any one of two color pigments other than the one color tone, A driving operation is performed such that at least two display pixels arranged in the vertical direction or the horizontal direction out of all display pixels other than the display pixels driven in the one display pixel driving step are driven to the light transmission state. Second step of driving the display pixel and exposing and curing the photoresist layer 15 on the display pixel in the light transmitting state by irradiating a predetermined amount of ultraviolet rays from the light source section E disposed on the back surface side of the monochrome liquid crystal display panel A. An exposure curing step, a second display pixel drive releasing step of releasing the drive of the display pixels in the light transmitting state, and the photoresist layer 15
On the transparent electrode plate A ₂ surface on the front side of the monochrome liquid crystal display panel A, and a pigment of one color tone other than the color tone. A third photoresist layer forming step of forming a photoresist layer 16 by applying a dispersion type photoresist, and a remaining portion other than the display pixels driven and operated in the first display pixel driving step and the second display pixel driving step. A third display pixel driving step of driving all display pixels into a light transmitting state, and irradiating a predetermined amount of ultraviolet rays from a light source section E arranged on the back side of the monochrome liquid crystal display panel A to display the light transmitting state. A third exposure and curing step of exposing and curing the photoresist layer 16 on the pixel; a third display pixel drive releasing step of releasing the drive of the display pixel in the light transmitting state; and the photoresist layer Third developing removing uncured portions of the 6
A method of manufacturing a color filter for a liquid crystal display device, which comprises a third filter pattern forming step by a development removing step.

The present invention also provides a monochrome liquid crystal display panel A.
A first photoresist layer forming step of forming a photoresist layer 14 by applying a transparent photoresist having a dyeing property on the surface of the transparent electrode plate A ₂ on the front surface side of the black and white, which is regularly arranged horizontally and vertically. A first display pixel driving step of driving at least two display pixels arranged in at least a vertical direction or a horizontal direction out of all display pixels of the liquid crystal display panel A into a light transmitting state, and a back surface of the monochrome liquid crystal display panel A. A first exposure-curing step of exposing and curing the photoresist layer 14 on the display pixels in the light transmitting state by irradiating a predetermined amount of ultraviolet rays with the light source section E disposed on the side; A first display pixel driving release step of releasing driving, a first development removing step of developing and removing an uncured portion of the photoresist layer 14, and a first dyeing step of dyeing an exposed cured portion with a first dyeing solution. And to That a first filter pattern forming step, the monochrome liquid crystal display panel front side transparent electrode plate A ₂ surface of A, a second photo of forming a photoresist layer 15 by coating a transparent photoresist with dyeability In the resist layer forming step and in all display pixels other than the display pixels driven and operated in the first display pixel driving step, at least two display pixels arranged in the vertical direction or the horizontal direction are driven to the light transmitting state. Second display pixel driving step in operation, and light source section E disposed on the back side of the monochrome liquid crystal display panel A
Second exposure and curing step of exposing and curing the photoresist layer 15 on the display pixel in the light transmitting state by irradiating a predetermined amount of ultraviolet light with the second display for releasing the driving of the display pixel in the light transmitting state. Second filter pattern formation by a pixel driving release step, a second development removal step of developing and removing an uncured portion of the photoresist layer 14, and a second dyeing step of dyeing an exposed cured portion with a second dyeing solution. A third photoresist layer forming step of forming a photoresist layer 14 by applying a transparent photoresist having a dyeing property on the surface of the transparent electrode plate A ₂ on the front side of the monochrome liquid crystal display panel A, A third display pixel driving step of driving all remaining display pixels other than the display pixels driven in the first display pixel driving step and the second display pixel driving step into a light transmitting state; A third exposure curing step of exposing and curing the photoresist layer 16 on the display pixels in the light transmitting state by irradiating a predetermined amount of ultraviolet rays with the light source unit E arranged on the back surface side of the display panel A, and in the light transmitting state. A third display pixel driving release step of releasing the drive of a certain display pixel, a third development removing step of developing and removing an uncured portion of the photoresist layer 16, and a dyeing of an exposure cured portion with a third dyeing solution. 3rd to do
A method of manufacturing a color filter for a liquid crystal display device, the method including a dyeing step and a third filter pattern forming step.

[0007]

According to the method of the present invention, red (Red) and green (Gr) are formed on the surface of the transparent electrode plate A ₂ on the front side of the monochrome liquid crystal display panel A.
een) or blue (Blue) color pigment, for example, red (Red) pigment-dispersed photoresist is applied to form a photoresist layer 14, which is regularly arranged in rows and columns. After all the display pixels of the monochrome liquid crystal display panel A, at least every two display pixels arranged in the vertical direction or the horizontal direction are driven to the light transmission state,
A predetermined amount of ultraviolet rays is irradiated from a light source section E arranged on the back surface side of the monochrome liquid crystal display panel A to expose and cure the photoresist layer 14 on the display pixels in the light transmitting state to form a cured section 14a. By developing and removing the uncured portion 14b of the photoresist layer 14, at least two of the display pixels of the monochrome liquid crystal display panel A which are regularly arranged vertically and horizontally are arranged in the vertical or horizontal direction.
The red first filter pattern R having the display pixel pattern shape arranged every other one is provided on the transparent substrate 1 of the transparent electrode plate A _2.
Can be formed on one.

After forming the first filter pattern R, one of two color tones (green or blue) other than red, for example, green (Green) is formed on the surface of the transparent electrode plate A _2. Of the pigment-dispersed photoresist is applied to form a photoresist layer 15, and the photoresist layer 15 is arranged in at least the vertical direction or the horizontal direction of all display pixels other than the display pixels driven and operated in the pattern formation of the first filter pattern R. Every other two display pixels are driven into a light transmitting state, and exposed and cured in the same manner as above to form a cured portion 15a and an uncured portion 15b on the photoresist layer 15.
By removing 5b by development, at least the display pixels corresponding to at least the vertical or horizontal direction among all the display pixels of the monochrome liquid crystal display panel A regularly and horizontally arranged in the region other than the first filter pattern R. It is possible to form a green second filter pattern G having a display pixel pattern shape in which every two patterns are arranged on the transparent substrate 11 of the transparent electrode plate A ₂ .

Then, the red first filter pattern R,
After forming the second filter patterns G of green and green, a pigment dispersion type photoresist of one color tone other than red and green, for example, blue (Blue) is applied to the surface of the transparent electrode plate A ₂ to form the photoresist layer 16 And driving the remaining display pixels arranged in the vertical direction or the horizontal direction other than the display pixels driven and operated in the respective pattern formation of the first filter pattern R and the second filter pattern G to the light transmitting state. Then, the photoresist layer 16 is exposed and cured in the same manner as described above to form the cured portion 16a and the uncured portion 16b, and the uncured portion 16b is removed by development to remove the transparent electrode plate A ₂
The first filter pattern R on the transparent substrate 11 in
The blue third filter pattern B having the display pixel pattern shape can be formed in the display pixel region of the monochrome liquid crystal display panel A which is regularly arranged in the vertical and horizontal directions in the region other than the second filter pattern G.

In this way, the liquid crystal display pixel pattern shape is provided on the transparent substrate 11, and each color is red.
1st filter pattern R by and green (Green)
It is possible to form a color filter composed of the second filter pattern G of B and the third filter pattern B of blue.

[0011]

EXAMPLES The method of the present invention will be described in detail below with reference to the examples. FIG. 1 is a side sectional view of a monochrome liquid crystal display panel A used in the method of the present invention. Means a liquid crystal display panel assembled for a liquid crystal of a monochrome liquid crystal display device without a color filter, or a liquid crystal display panel for a color liquid crystal display device (provided with scanning electrodes and signal electrodes for color display, Although it is a color liquid crystal display panel including a liquid crystal driving circuit pattern), it is an assembled liquid crystal display panel that does not yet have the color filter itself.

The display mechanism of the monochrome liquid crystal display panel A used in the present invention is not particularly limited in the method of the present invention. For example, as shown in FIG. 1, a striped pattern is formed on the transparent substrate 1. A transparent backside electrode plate A _{1 in} which transparent electrodes 2 having a parallel line pattern are laminated and arranged, and a transparent substrate 1.
The front transparent electrode plate A ₂ on which the transparent electrodes 12 having a stripe-shaped parallel line pattern are laminated and arranged in a direction orthogonal to the transparent electrode 2 on 1 is spaced apart and opposed to each other in parallel, and at the separated opposing interval, It is aligned with the direction of transmitting light when an electric field is applied, and the orientation of liquid crystal molecules changes to the direction of scattering light (blocking light) when the application of an electric field is canceled. Cholesteric liquid crystal showing a regular spiral axis direction (liquid crystal molecules 4 arranged in a spiral shape)
a), or a liquid crystal in which a cholesteric liquid crystal and a nematic liquid crystal exhibiting irregular molecular orientation are mixed, or a colorant 4b (in the method of the present invention, a black colorant or a dark colorant having good light absorption performance) A liquid crystal layer 4 enclosing a liquid crystal such as a phase change type liquid crystal such as guest-host type liquid crystal mixed with) or a polymer dispersed liquid crystal in which a nematic liquid crystal is dispersed in a polymer solute.

In the case of the liquid crystal layer 4 using the above-mentioned phase transition type liquid crystal, the transparent substrates 1 on both side interfaces of the liquid crystal layer 4 are respectively formed.
On the 11 side, alignment films 3 and 13 (alignment films for cholesteric liquid crystal alignment) that align the phase transition liquid crystals in the same direction may be provided. Both the dispersion type liquid crystal does not require a polarizing plate that transmits light incident in one transmission axis direction and blocks light incident in a direction orthogonal to the transmission axis. One or both of the transparent substrates 1 and 11 are transparent glass plates or synthetic resin plates, or relatively thin synthetic resin films (for example, a thickness of 100 μm to 30 μm).
0 μm).

One of the transparent electrodes 2 and the other transparent electrode 12 of the monochrome liquid crystal display panel A are formed as a stripe-shaped parallel linear pattern, which are arranged in directions orthogonal to each other and are spaced apart and face each other. Has been done. A large number of corresponding intersections where the transparent electrode 2 and the transparent electrode 12 are spaced apart from each other in the orthogonal direction and intersect with each other become the display pixels Pc which are regularly arranged. The monochrome liquid crystal display panel A may be a known monochrome liquid crystal display panel.

On the transparent electrode plate A ₁ side of the back surface of the liquid crystal display panel A, a light source section E for irradiating ultraviolet rays L is provided.
Is equipped with. The light source unit E may be a fluorescent white light source having a small spectral component of the ultraviolet wavelength, which is already assembled in the monochrome liquid crystal display device including the monochrome liquid crystal display panel A, but has a large spectral component in the ultraviolet region. In order to use a light source, it is appropriate to separately arrange a light source section E such as a metal halide lamp for ultraviolet exposure, an ultra-high pressure mercury lamp, a xenon lamp, a carbon arc lamp or the like.

The monochrome liquid crystal display panel A used in the method of the present invention uses a phase transition type liquid crystal or a polymer dispersion type liquid crystal as the liquid crystal 4, and the transparent substrates 1 and 11 are used.
In addition to the monochrome liquid crystal display panel shown in FIG. 1 of the display mechanism that does not use a polarizing plate on the outer surface of each of the above, a liquid crystal layer 4 is formed by using a nematic liquid crystal (not shown), and the transparent substrates 1 and 11 and the liquid crystal layer are formed. 4, liquid crystal alignment films 3 and 13 (alignment films for nematic liquid crystals) arranged in directions orthogonal to each other are arranged on both interfaces, and a polarizing plate is used on the outer surfaces of the transparent substrates 1 and 11, respectively. It may be a monochrome liquid crystal display panel, or a monochrome liquid crystal display panel of a display mechanism using a polarizing plate only on the outer surface of the transparent substrate 11, and the display format in this case is either normally white or normally black. May be

The method for producing a color filter of the present invention comprises a liquid crystal layer 4 made of a guest-host type liquid crystal in which a black colorant is mixed in a phase transition type liquid crystal (cholesteric liquid crystal,
2A to 2C and 3A to 3C in the case where the transparent substrates 1 and 11 are manufactured using the monochrome liquid crystal display panel A shown in FIG. The details will be described below with reference to (c) and FIGS.

First, of the three primary color (red, green, blue) filter patterns formed as the filter pattern of the color filter, for example, a step of forming a first filter pattern of red (Red) is shown in FIG. It will be described in detail in accordance with a) to (c).

As shown in FIG. 2A, first, in the first photoresist layer forming step, on the surface of the transparent substrate 11 of the transparent electrode plate A ₂ on the front side of the monochrome liquid crystal display panel A,
A pigment dispersion type photoresist containing a red (Red) color pigment is applied by a spin coating method such as a roll coating method or a spin coating method to form a photoresist layer 14.

Subsequently, as shown in FIG. 2B, in the first display pixel driving step, the monochrome liquid crystal display panel A is
Of all the display pixels Pc, Pc, Pc, ...
Of at least two display pixels Pc arranged in the vertical direction or the horizontal direction are selected and a drive voltage V is applied,
The liquid crystal molecules of the liquid crystal layer 4 of the selected display pixel Pc are oriented in the directions of the electrodes 2 and 12 and driven to operate in the light transmitting state, and the light transmitting for forming the first filter pattern R of red (Red) is transmitted. Form part TR. The liquid crystal layer 4 in the display pixel portion to which the drive voltage V is not applied is not oriented, and the light opaque portions SG and SB are formed while maintaining the state of the helical liquid crystal molecules 4a of the phase transition type liquid crystal.

Subsequently, as shown in FIG. 2B, the first
In the exposure curing step, the monochrome liquid crystal display panel A
A predetermined amount of ultraviolet light L is irradiated from the light source unit E arranged on the back side of the photoresist layer 14 on the light transmitting portion TR corresponding to the display pixel Pc in the light transmitting state to be exposed and cured to transmit the light. A patterned light curing portion 14a and an uncured portion 14b are formed on all unexposed display pixels Pc other than the light transmitting portion TR.

Subsequently, in the first display pixel drive releasing step, the drive of the display pixel Pc in which the light transmitting portion TR of the monochrome liquid crystal display panel A is formed is released so that all the display pixels are in the light non-transmissive state. After that, the uncured portion 14b of the photoresist layer 14 is developed and removed, and as shown in FIG.
On the transparent substrate 11, a red (Red) first filter pattern R is formed by photocuring red (Red) pigment dispersion type photoresist.

Next, the step of forming a second filter pattern of, for example, green among the filter patterns of the three primary colors (red, green, blue) formed as the filter pattern of the color filter is shown in FIG. 3A, the transparent substrate 11 of the transparent electrode plate A ₂ on the front side of the monochrome liquid crystal display panel A is first formed in the second photoresist layer forming step, as shown in FIG. A pigment-dispersed photoresist containing a green color pigment is applied to the surface by a spin coating method such as a roll coating method or a spin coating method to form a photoresist layer 15.
To form.

Subsequently, as shown in FIG. 3B, in the second display pixel driving step, all the display pixels Pc, Pc, Pc, Pc, Pc, Pc, of the monochrome liquid crystal display panel A which are regularly arranged vertically and horizontally.
Of all the display pixels other than the display pixel (the light transmitting portion TR) driven and operated in the first display pixel driving step, at least two display pixels Pc arranged in the vertical direction or the horizontal direction are arranged. Alternately select the selected display pixel P
The c is driven into the light transmitting state to form the light transmitting portion TG for forming the green second filter pattern G.

Then, as shown in FIG. 3B, the second
In the exposure curing step, the monochrome liquid crystal display panel A
A predetermined amount of ultraviolet ray L is irradiated from the light source section E disposed on the back side of the photoresist layer 15 on the light transmitting section TG corresponding to the display pixel Pc in the light transmitting state to be exposed and cured to transmit the light. The TG-patterned light-cured portion 15a and the uncured portion 15b are formed on all the unexposed display pixels Pc other than the light-transmitting portion TG.

Subsequently, in the second display pixel drive releasing step, the drive of the display pixel Pc in which the light transmitting portion TG of the monochrome liquid crystal display panel A is formed is released, and all the display pixels are made into the light non-transmissive state. After that, the uncured portion 15b of the photoresist layer 15 is developed and removed, and as shown in FIG.
On the transparent substrate 11, a green second filter pattern G made of a photo-cured green pigment dispersion type photoresist is formed.

Next, the step of forming a third filter pattern which is the remaining blue out of the filter patterns of the three primary colors (red, green and blue) formed as the filter pattern of the color filter is shown in FIG. 4C, first, in the third photoresist layer forming step, the transparent substrate 11 of the transparent electrode plate A ₂ on the front side of the monochrome liquid crystal display panel A is first shown in FIG. 4A. On the surface,
A pigment-dispersed photoresist containing a blue (Blue) color pigment is applied by a spin coating method such as a roll coating method or a spin coating method to form a photoresist layer 16.

Subsequently, as shown in FIG. 4B, in the third display pixel driving step, the display pixels (each of which transmits light) are driven in the first display pixel driving step and the second display pixel driving step. All the display pixels Pc other than the pixels corresponding to the portions TR and TG) are driven to the light transmitting state to form the blue third filter pattern B.
To form.

Subsequently, as shown in FIG. 4B, the third
In the exposure curing step, the monochrome liquid crystal display panel A
The light transmitting section T corresponding to the display pixel in the light transmitting state by irradiating a predetermined amount of ultraviolet rays L from the light source section E disposed on the back side of the
The photoresist layer 16 on B is exposed and cured to form a light-cured portion TB pattern-shaped light-cured portion 16a and an uncured portion 16 on all unexposed display pixels Pc other than the light-transmitted portion TG.
and b.

Subsequently, in the third display pixel drive releasing step, the drive of the display pixel Pc in which the light transmitting portion TB of the monochrome liquid crystal display panel A is formed is released, and all the display pixels Pc,
After making Pc, Pc, ... In a non-light-transmitting state, the uncured portion 16b of the photoresist layer 16 is removed by development,
As shown in (c), the transparent third electrode pattern B and the liquid crystal alignment film are formed on the back surface by forming the blue third filter pattern B of the photocuring blue pigment dispersion photoresist on the transparent substrate 11. A transparent electrode plate A ₂ provided with
On the surface of the transparent substrate 11, the first filter pattern R of red (Red), the second filter pattern G of green (Green), and the third filter pattern of blue (Blue) of the array pattern shape of the liquid crystal display pixels Pc are formed. A color filter in which B is arranged can be manufactured.

The transparent electrode plate A ₂ having the color filter pattern formed on the surface of the transparent substrate 11 manufactured as described above is used for the monochrome liquid crystal display panel A used in the method of the present invention as a color liquid crystal display panel. Can be a color filter.

Further, the transparent electrode plate A ₂ having the color filter pattern formed on the surface of the transparent substrate 11 manufactured as described above is separated from the transparent electrode plate A ₁ facing the monochrome liquid crystal display panel A, It can be separately used as a color filter for a color liquid crystal display panel.

The red color (R
The ed) pigment-dispersed photoresist is a negative photoresist (photo-curable photoresist) in which a red (Red) color pigment is dispersed and mixed, and a green (Gre)
en) is a negative-working photoresist (photo-curable photoresist) containing green (Green).
n) is a color pigment dispersed and mixed, and a blue (Blue) pigment-dispersed photoresist is a negative photoresist (photocurable photoresist) containing blue (Bl).
ue) is a color pigment dispersed and mixed.

As the negative type photoresist used for the above-mentioned pigment dispersion type photoresist, acrylic type negative type photoresist, styrene type negative type photoresist, styrene-maleic acid type negative type photoresist and azide type negative type photoresist are used. Can be used. Further, epoxy resin-based (meth) acrylate having a radical polymerizable unsaturated group, polyurethane-based (meth) acrylate, alkyd resin-based (meth) acrylate, saturated polyester-based (meth) acrylate, unsaturated polyester-based (meth) acrylate, Prepolymers such as polyhydric alcohol-based (meth) acrylates, polymerizable unsaturated monomers such as (meth) acrylic acid ester-based monomers and styrene-based monomers, and photopolymerization initiators such as allyl ketones, disulfides and benzoins A negative photoresist containing a sensitizer) can be used.

As the red, green and blue color pigments to be dispersed and mixed in the negative photoresist, heat resistant and weather resistant pigments are preferable, and examples thereof include barium sulfate, zinc oxide, lead sulfate and titanium oxide. , Inorganic pigments such as yellow lead, red iron oxide, ultramarine blue, dark blue, chrome oxide, carbon black, or benzidine yellow, benzidine yellow, resor fast orange, vulcan fast orange, pigment scarlet, thioindigo, green gold, malachite green Red, green, blue coloring by mixing any of organic pigments such as lake, riotogen red, lionogen orange, lionol green, lionogen yellow, lionol blue, and lionogen violet in an appropriate ratio. A pigment can be used.

400 nm corresponding to the three primary colors of light
-500 nm wavelength spectral range has a high spectral transmittance blue (Blue) tone pigment, 500 nm-600 nm wavelength region high wavelength spectral transmittance green pigment, and 600 nm-700 nm wavelength region spectral transmission The red (Red) color pigment having a high rate is obtained by blending any one of the above-mentioned inorganic pigments or organic pigments at an appropriate ratio.

Further, as a developing treatment solvent for dissolving the uncured portion, an alkali solution (for example, sodium carbonate 2-3% aqueous solution, sodium hydroxide 2-3% aqueous solution),
Alternatively, an alcohol-based or toluene-based organic solvent or a composite organic solvent thereof can be used.

In the above embodiment, the filter patterns are formed in the order of the first filter pattern R, the second filter pattern G, and the third filter pattern B, but in the method of the present invention, the order of formation is this. It is not limited.

The method of the present invention is not limited to the method of manufacturing a color filter by forming a color filter pattern using a pigment-dispersed photoresist on the transparent substrate 11 of the monochrome liquid crystal display panel A. On the transparent substrate 11 of A, gelatin which is easily dyed with a dye solution,
Casein, glue, polyacrylamide, polyvinyl alcohol, etc. are added with dichromate (potassium dichromate, sodium dichromate, etc.) and coated with a transparent photoresist (photosensitive material) to which photosensitivity is applied. 1, second and third photoresist layers 14, 15, 16
Is formed, exposed using each display pixel pattern of the monochrome liquid crystal display panel A and developed (water development) in the same manner as described above, and the first filter pattern R is sequentially formed on the transparent substrate 11.
An equivalent dyeing pattern, a dyeing pattern corresponding to the second filter pattern G, and a dyeing pattern corresponding to the third filter pattern B are sequentially formed, and a dyeing pattern corresponding to the first filter pattern R is first dyed. In the step, the dyeing pattern corresponding to the second filter pattern G is dyed with the red dyeing solution, the green dyeing solution is used in the second dyeing step, and the dyeing pattern corresponding to the third filter pattern B is dyed. It is also possible to manufacture by forming a color filter pattern by a dyeing method by dyeing with a blue dyeing solution in the third dyeing step.

[0040]

According to the method of manufacturing a color filter for a liquid crystal display device of the present invention, a liquid crystal display pixel of a monochrome liquid crystal display panel is provided with an optical mask used for pattern exposure in coloring and forming a filter pattern. Using a shutter mechanism for switching between light transmission (increasing the amount of transmitted light) and blocking light (decreasing the amount of transmitted light) and an array pattern of the display pixels of the panel, a pigment-dispersed photo applied on a transparent substrate of a transparent electrode plate. A color filter pattern can be easily formed by pattern-exposing a resist or a colorless and transparent photoresist with good dyeing property, and development process or development process and dyeing process can be easily performed. By using the optical shutter function of the display pixel that can be solved, and is equipped with a monochrome liquid crystal display panel,
There is an effect that a color filter for a liquid crystal display device can be manufactured relatively easily.

[Brief description of drawings]

FIG. 1 is a side sectional view of a monochrome liquid crystal display panel used in the method of the present invention.

2 (a) to 2 (c) are side sectional views illustrating a step of forming a first filter pattern in the method of the present invention.

3 (a) to 3 (c) are side cross-sectional views illustrating a step of forming a second filter pattern in the method of the present invention.

4 (a) to 4 (c) are side cross-sectional views illustrating a step of forming a third filter pattern in the method of the present invention.

[Explanation of sign]

A: Monochrome liquid crystal display panel A ₁ ... Transparent electrode plate A ₂
... Transparent electrode plate E ... Light source part e ... White light lamp L ... Exposure 1 ... Transparent substrate 2 ... Transparent electrode 3 ... Liquid crystal alignment film 4 ... Liquid crystal 4a ... Liquid crystal molecular arrangement 4b ... Colorant 11 ... Transparent substrate 12 ... Transparent electrode 13 ... Liquid crystal alignment film 14 ... First photoresist layer 14a ... Photocured portion 14
b ... uncured portion 15 ... second photoresist layer 15a ... photocured portion 15
b ... uncured portion 16 ... third photoresist layer 16a ... photocured portion 16
b ... Uncured portion Pc ... Liquid crystal display pixel TR ... Light transmitting portion (transmitted light amount increasing portion) TG corresponding to the first filter pattern R TG ... Light transmitting portion (transmitted light amount increasing portion) TB corresponding to the second filter pattern G TB ... Light-transmitting portion (transmitted light amount increasing portion) SR corresponding to the third filter pattern B ... Light non-transmitting portion (transmitted light amount decreasing portion) SG corresponding to first filter pattern R SG ... Light non-transmitting portion corresponding to second filter pattern G Part (transmitted light amount reducing part) SB ... Light non-transmitting part (transmitted light amount reducing part) corresponding to the third filter pattern B R ... Red first filter pattern G ... Green second
Filter pattern B: third filter pattern in blue

Claims (2)

[Claims] 1. A first photoresist layer forming step of forming a photoresist layer 14 by coating a pigment dispersion type photoresist on the surface of a transparent electrode plate A ₂ on the front side of a monochrome liquid crystal display panel A, and a rule. A first display pixel driving step in which at least two display pixels arranged in the vertical direction or the horizontal direction out of all the display pixels of the monochrome liquid crystal display panel A which are vertically and horizontally arranged are driven to the light transmission state. A first exposure-curing step of exposing and curing the photoresist layer 14 on the display pixels in the light-transmitting state by irradiating a predetermined amount of ultraviolet rays with a light source section E arranged on the back surface side of the monochrome liquid crystal display panel A; A first display pixel driving canceling step of canceling driving of the display pixels in a transmissive state; and the photoresist layer 14.
A first filter pattern forming step by a first developing / removing step of developing and removing the uncured portion of 2), and 2) applying a pigment-dispersed photoresist to the surface of the transparent electrode plate A ₂ on the front side of the monochrome liquid crystal display panel A. And a second photoresist layer forming step of forming the photoresist layer 15 and all the display pixels other than the display pixels driven and operated in the first display pixel driving step are arranged in at least the vertical direction or the horizontal direction. A second display pixel driving step of driving every other two display pixels in a light transmitting state, and irradiating a predetermined amount of ultraviolet rays with a light source section E arranged on the back surface side of the monochrome liquid crystal display panel A to transmit the light. A second exposure curing step of exposing and curing the photoresist layer 15 on the display pixels in the state, a second display pixel drive releasing step of releasing the drive of the display pixels in the light transmitting state, Resist layer 14
A second filter pattern forming step by a second developing and removing step of developing and removing the uncured portion of 3), 3) applying a pigment dispersion type photoresist to the surface of the transparent electrode plate A ₂ on the front side of the monochrome liquid crystal display panel A And a third photoresist layer forming step of forming the photoresist layer 14, and light transmission through all the remaining display pixels other than the display pixels driven in the first display pixel driving step and the second display pixel driving step. Third display pixel driving step of driving to a state, and a photoresist layer on the display pixel in the light transmitting state by irradiating a predetermined amount of ultraviolet rays with a light source section E arranged on the back surface side of the monochrome liquid crystal display panel A. A third exposure and curing step of exposing and curing 16; a third display pixel drive releasing step of releasing the drive of the display pixels in a light transmitting state; and developing an uncured portion of the photoresist layer 16. The third developing step of removing the third filter pattern forming step in the method of manufacturing the color liquid crystal display device filter which comprises a by that support. 2. A _first photoresist layer for forming a photoresist layer 14 by coating a transparent photoresist having a dyeing property on the surface of the transparent electrode plate A ₂ on the front side of the monochrome liquid crystal display panel A. Step, and first display pixel that drives at least two display pixels arranged in the vertical direction or the horizontal direction out of all the display pixels of the monochrome liquid crystal display panel A that are regularly arranged in the vertical and horizontal directions to drive in a light transmitting state. Driving step and first exposure curing for exposing and curing the photoresist layer 14 on the display pixel in the light transmitting state by irradiating a predetermined amount of ultraviolet rays from the light source section E arranged on the back surface side of the monochrome liquid crystal display panel A. A process, a first display pixel drive release process for releasing the drive of the display pixel in the light transmitting state, a first development removal process for developing and removing an uncured portion of the photoresist layer 14, and an exposure cured portion. A first filter pattern forming process according to a first dyeing step of dyeing by first dyeing liquid, 2) on the monochrome liquid crystal display panel front side transparent electrode plate A ₂ surface of the A, transparent with dyeability A second photoresist layer forming step of applying a photoresist to form a photoresist layer 15, and at least a vertical direction or a horizontal direction of all display pixels other than the display pixels driven and operated in the first display pixel driving step. A second display pixel driving step of driving every other two display pixels arranged in a light transmitting state, and a light source section E arranged on the back surface side of the monochrome liquid crystal display panel A.
Second exposure and curing step of exposing and curing the photoresist layer 15 on the display pixel in the light transmitting state by irradiating a predetermined amount of ultraviolet light with the second display for releasing the driving of the display pixel in the light transmitting state. Second filter pattern formation by a pixel driving release step, a second development removal step of developing and removing an uncured portion of the photoresist layer 14, and a second dyeing step of dyeing an exposed cured portion with a second dyeing solution. And 3) a third photoresist layer forming step of forming a photoresist layer 14 by applying a dyeable transparent photoresist on the surface of the transparent electrode plate A ₂ on the front side of the monochrome liquid crystal display panel A. And the first display pixel driving step and the second
A third display pixel driving step of driving all the remaining display pixels other than the display pixels driven in the display pixel driving step into a light transmitting state, and a light source unit E arranged on the back surface side of the monochrome liquid crystal display panel A. Third exposure and curing step of irradiating a predetermined amount of ultraviolet light on the photoresist layer 16 on the display pixel in the light transmitting state and exposing the display pixel in the light transmitting state to a third display Pixel drive cancellation process,
A third filter pattern forming step including a third developing and removing step of developing and removing an uncured portion of the photoresist layer 16 and a third dyeing step of dyeing an exposed and cured portion with a third dyeing solution. A method for manufacturing a characteristic color filter for a liquid crystal display device.