JPH11326625A - Color filter, color liquid crystal display, and production thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To effectively prevent color omission at the filling of a light- transmitting area with ink by giving an approximately circular shape to a partitioning member surrounding the light-transmitting area. SOLUTION: A filter element 102b has a columnar shape, and its diameter is determined through its relation to the size of an ink drop. The ink drop is spherical due to surface tension, and since its diameter is within the range of 20 to 30 μm, the diameter of the filter element 102b is set within the range of 20 to 30 μm. However, the section of the filter element 102b may be formed into a taper having a wide aperture part. The shape of a partitioning member 102 is not limited to circle but may also be polygonal. The partitioning member 102 surrounding the filter element 102b is formed in accordance with the ink drop in this manner to uniformly color the filter element 102b as a whole. Thus, complicated control of ink discharge becomes unnecessary to simplify production processes.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a color filter used for a color liquid crystal display and the like.
The present invention relates to the shape of a partition (hereinafter, referred to as a “partition member” in this specification) that surrounds a light transmission region (hereinafter, referred to as a “filter element”) of a color filter. Specifically, the present invention relates to a shape of a partition member suitable for manufacturing a color filter by a piezo-type on-demand type inkjet printing technique.

[0002]

2. Description of the Related Art In recent years, the development of personal computers,
In particular, with the development of portable personal computers, the demand for color liquid crystal displays tends to increase. This color liquid crystal display is used in notebook personal computers, in-vehicle navigation systems, desktop personal computers, electronic still cameras, game machines, projectors, and the like.

A color filter is integrally formed with a display device of a liquid crystal display, and plays a role of improving image quality and giving each primary color of each pixel of the color liquid crystal display. For example, a color TFT (Thin Film Tr)
The screen of the ansistor is controlled by a bitmap method, and one point on the screen and the memory in the computer are displayed in one-to-one correspondence. In this case, the entire screen is subdivided into a lattice shape, and color and brightness information is given to each filter element. For example, in HDTV, 10
24 × 1536 × 3 filter elements are required.
Therefore, as the number of filter elements constituting a screen increases, a finer image can be displayed, and more accurate control of coloring of the filter elements is required.

For this reason, as a method of coloring a filter element in the production of a high-definition color filter, for example,
JP-A-8-292317, JP-A-8-27171
No. 5, JP-A-9-49921, etc., an inkjet printing technique is known. This technology stores the ink in the pressurized chamber of an ink jet recording head using a piezoelectric thin film element, and colors the filter element by discharging the ink by the volume change of the pressurized chamber due to the vibration of the piezoelectric element, This is to produce a color filter.

[0005]

However, since the conventional filter element has a rectangular shape, when the ink droplets are ejected by the ink jet printing technique, the entire filter element cannot be uniformly colored. This will be described with reference to FIG. As shown in the figure, four ink droplets 81 and 8 are provided in the filter element 7.
When ink droplets 2, 83 and 83 are ejected, each ink droplet becomes substantially spherical due to its surface tension.
The inside of the filter element could not be uniformly colored, and color missing occurred around the opening of the filter element 7. In a color filter, such a color loss is a major defect, and causes a great loss of image quality.

In view of such problems, for example, Japanese Patent Application Laid-Open No. 8-327816 discloses a technique for coloring a filter element by appropriately changing the discharge start position of ink droplets discharged to the filter element. . However, in this technology, as an ink jet recording head, ink is ejected by a heating jet method by volume expansion of the ink using thermal energy, so that the ejected ink has poor rectilinearity, and the ink droplet landing position is Even if it is adjusted appropriately, it is difficult to uniformly color the entire rectangular filter element.

In addition, Japanese Patent Application Laid-Open No. 8-271720,
JP-A-7-253510, JP-A-7-14640
Japanese Patent Application Laid-Open No. 6-204,887 discloses a technique for uniformly coloring the entire rectangular filter element with ink droplets. However, these techniques require complicated ink ejection control, which complicates the manufacturing process. In addition, there is a problem that the manufacturing cost is increased.

Accordingly, an object of the present invention is to provide a color filter suitable for coloring a color filter by an ink-jet printing technique, a color liquid crystal display provided with the color filter, and a method of manufacturing the same.

[0009]

A color filter according to the present invention includes a partition member for forming a plurality of rows and partitioning each of light transmitting regions (filter elements) formed on a transparent substrate at a predetermined arrangement pitch. A color filter,
The shape of the partition member surrounding the light transmitting region is substantially circular. By setting the shape of the partition member surrounding the light transmitting region to the shape of an ink droplet, that is, a substantially circular shape, it is possible to effectively prevent color loss when the light transmitting region is filled with ink. The size of the shape of the partition member surrounding the light transmitting area is set in accordance with the size of the ink droplet. Preferably, the diameter of the substantially circular shape is in a range of 20 μm to 30 μm. Also,
The shape of the partition member surrounding the light transmitting region may be polygonal. For example, a polygon such as a hexagon or a dodecagon is used.
Preferably, the sectional shape of the partition member surrounding the transmission region is a tapered shape with a wide opening. With this configuration, it is possible to more effectively prevent the coloring loss of the ink. Further, preferably, the predetermined arrangement pitch is set to be the same as the arrangement pitch of the nozzles of the ink jet recording head that discharges the ink for coloring the light transmitting region. Further, the interval between the rows of the light transmitting areas may be the same as the interval between the rows of the nozzles of the ink jet recording head that discharges the ink for coloring the light transmitting areas. According to this configuration, the arrangement size of the light transmitting region can be made the same as the arrangement size of the ink jet recording head, so that the ink ejection control becomes easy. Preferably, the partition member is made of a light-shielding material. in this case,
The partition member functions as a black matrix. The color liquid crystal display of the present invention is configured by sealing liquid crystal between a color filter and a second transparent substrate having a surface on which a pixel electrode and an alignment film are formed. ADVANTAGE OF THE INVENTION According to the color liquid crystal display of this invention, since there is no missing color of the color filter, a high quality and high definition color liquid crystal display can be provided.

In the method of manufacturing a color filter according to the present invention, a light transmitting region is formed by discharging ink droplets from an ink jet type recording head and divided into a plurality of rows at a predetermined arrangement pitch by a partition member formed on a transparent substrate. In the method for producing a color filter for coloring the ink, a step of filling each of the light transmitting areas defined by the partition member into a substantially circular shape with ink, and a step of drying each ink filled in the light transmitting areas, Forming a protective film covering the ink. Preferably, the substantially circular diameter,
The range is 20 μm to 30 μm. Further, the shape of the partition member surrounding the light transmitting region may be a polygon. Further, the predetermined arrangement pitch may be the same as the arrangement pitch of the nozzles of the ink jet recording head that discharges the ink for coloring the light transmitting region. Further, the interval between the rows of the light transmitting areas may be the same as the interval between the rows of the nozzles of the ink jet recording head that discharges the ink for coloring the light transmitting areas. The method for manufacturing a color filter of the present invention may further include a step of forming the partition member with a light-shielding material in addition to the above steps.
The step of filling the light transmitting region with ink is performed by an ink jet recording head using a piezoelectric thin film element functioning as an electromechanical transducer as a pressure source for ink ejection. The method for manufacturing a color liquid crystal display according to the present invention includes a method for manufacturing a color filter according to the present invention, a step of forming a pixel electrode and an alignment film on a second transparent substrate, and a method for forming a color filter and the second transparent substrate. Interposing a liquid crystal between them.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. 1 is an exploded perspective view of an ink jet recording head, FIG. 2 is an explanatory view of the operation principle of the ink jet recording head, FIG. 3 is a plan view of a partition member according to the present invention, and FIG. 4 is provided with a partition member according to the present invention. 5 and 6 are sectional views of a color filter manufacturing process, and FIGS. 7 and 8 are plan views of a partition member of another embodiment.

(Structure of Inkjet Recording Head) The exploded perspective view of the inkjet recording head 9 shown in FIG. 1 is of a type in which an ink supply flow path is formed in a pressure chamber substrate. As shown in FIG. 1, the ink jet recording head 9 mainly includes a pressure chamber substrate 1, a nozzle plate 5, and a base 3.

The pressure chamber substrate 1 is formed on a silicon single crystal substrate and then separated. The pressurizing chamber substrate 1 is provided with a plurality of strip-like pressurizing chambers 106, and all the pressurizing chambers 106 are provided.
And a common flow channel 110 for supplying ink to the printer. The pressurizing chambers 106 are separated by side walls 107. The pressurizing chambers 106 are arranged in two rows, and 128 are formed for each row, thereby realizing an ink jet recording head having a print density of 256 nozzles. On the substrate 3 side of the pressurizing chamber substrate 1, a diaphragm film and a piezoelectric thin film element are formed. The wiring from each piezoelectric thin film element is converged on a wiring board 4 which is a flexible cable, and is connected to an external circuit (not shown) of the base 3. An ink discharge timing for coloring the color filter is instructed to the external circuit, and the ink is discharged.

The nozzle plate 5 is joined to the pressure chamber substrate 1. A nozzle 51 for extracting an ink droplet is formed at a position corresponding to the pressurizing chamber 106 in the nozzle plate 5. The nozzles 51 are formed in two rows at a predetermined arrangement pitch. The interval between each row is 1/180 inch, that is, 141 μm, and the arrangement pitch of the nozzles 51 is 3
1/60 inch, or 70.5 μm.

The base 3 is a steel body such as plastic or metal, and serves as a mounting base for the pressurizing chamber substrate 1.

(Operation Principle of Inkjet Recording Head) FIG. 2 is an explanatory diagram of the operation principle of the ink-jet recording head 9. This figure shows an electrical connection relationship with the main part of the ink-jet type recording head 9.
One electrode of the drive voltage source 301 is connected to a lower electrode 303 of the ink-jet recording head via a wiring 302.
The other electrode of the drive voltage source 301 is connected to each of the pressurizing chambers 106a to 106a through the wiring 304 and the switches 306a to 306c.
6c is connected to the upper electrode 307.

In this figure, the switch 3 of the pressurizing chamber 106b is
06b is closed and the other switches 306a, 306
c is open. The pressurizing chambers 106a and 106c in which the switches 306a and 306c are open indicate a standby state of ink ejection. At the time of ink ejection, for example, a switch such as a switch 306b is closed, and the piezoelectric film 209 is closed.
Is applied with a voltage. This voltage is applied with the same polarity as the polarization direction of the piezoelectric film 309 indicated by the arrow A, in other words, the same voltage as the polarity of the applied voltage at the time of polarization. The piezoelectric film 309 expands in the thickness direction and contracts in the direction perpendicular to the thickness direction. This contraction causes the piezoelectric film 309 and the diaphragm 3
The stress acts on the interface of the piezoelectric film 309 and the diaphragm 3
10 bends downward. This bending causes the pressurizing chamber 106
The volume of b decreases and the ink droplet 23 is ejected from 51b. The filter element is colored by the ink droplet 23. Thereafter, when the switch 306b is opened again, the bent piezoelectric film 309 and the diaphragm 310 are restored, and the volume of the pressurizing chamber 106b expands, so that ink is supplied from the ink supply path (not shown) to the pressurizing chamber 106b. Will be filled. The vibration frequency of the piezoelectric film 309 is 7.2 kHz.

(Shape of Partition Member) Next, the shape of the partition member 102 according to the present invention will be described with reference to FIG. FIG.
2A is a plan view of the partition member 102. FIG. Filter element 10 formed on partition member 102 according to the present invention
The arrangement pitch X of 2b and the interval Y between the rows of the filter elements 102b are the same as the arrangement pitch of the nozzles 51 and the interval between the rows of nozzles 51 of the ink jet recording head. That is, the arrangement pitch X of the filter elements 102b is 36
1/0 inch, or 70.5 μm. The interval Y between the rows of the filter elements 102b is 1/180.
Inches, or 141 μm. FIG.
FIG. 3A is a sectional view taken along the line AA of FIG. As shown in the figure,
The filter element 102b has a columnar shape, and its diameter is determined depending on the size of the ink droplet. Since the ink droplet has a spherical shape due to its surface tension and has a diameter in the range of 20 μm to 30 μm, the diameter of the filter element 102 b is in the range of 20 μm to 30 μm. However, the cross-sectional shape of the filter element 102b may be formed in a tapered shape with a wide opening as shown in FIG. In addition, the shape of the partition member is not limited to the above-described circular shape, and may be a polygon (for example, a hexagon, a dodecagon, etc.).
When the shape of the partition member 102 surrounding the filter element 102b is adjusted to the shape of the ink droplets, the filter element 102b can be uniformly colored as a whole, and there is no missing color. For this reason, complicated control of ink ejection, which is required when coloring a rectangular filter element as in the related art, becomes unnecessary, and the manufacturing process of the color filter can be simplified. Further, since there is no missing color of the filter element 102b, a high quality color filter can be provided. Further, since the arrangement pitch of the filter elements 102b and the interval between the rows of the filter elements 102b are the same as those of the nozzles 51 of the ink jet recording head, the control of the ink jet recording head 9 becomes easy. That is, the arrangement pitch of the nozzles 51 is 70.5 μm, and the vibration frequency of the piezoelectric film 309 is 7.2 kHz.
By scanning the partition member 102 along the filter element 102b at a speed of s (= 70.5 μm × 7.2 kHz), the filter element 102b can be colored.

(Structure of Color Liquid Crystal Display) The structure of a color liquid crystal display having a partition member according to the present invention will be described with reference to FIG. FIG. 1 is a sectional view of a TFT color liquid crystal display in which a color filter 10 is incorporated. Color LCD display is color filter 1
It is formed by providing a glass substrate 207 opposed to the liquid crystal layer 0 and sealing the liquid crystal layer 204 therebetween. Liquid crystal layer 204
Is composed of polarized liquid crystal molecules, and the arrangement direction of the liquid crystal molecules can be controlled by the direction in which the voltage is applied. This liquid crystal layer 204 adjusts its characteristics by mixing several types of nematic liquid crystals. The color filter 10 is provided on a glass substrate 101 with colored pattern layers 20, 21 and 22, respectively dyed in red, green and blue, corresponding to the display elements of each primary color of the liquid crystal display. This is an indispensable filter for displaying. When the color liquid crystal display is of the VGA specification, the number of color pixels is 640 columns × 480 rows, so that a total of 640 × 480 × 3 filter elements are provided. Each colored pattern layer is partitioned by a grid-like partition member 102 to prevent mixing of coloring materials. The partition member 102 is made of a light-shielding material and functions as a black matrix. Further, a protective layer 103 and a common electrode 202 are sequentially formed on each colored pattern layer. On the other hand, a transparent pixel electrode 206 and a TFT (not shown) are formed on a matrix inside a glass substrate 207. Alignment films 203 and 205 are formed in the planes of the two glass substrates 101 and 207, and by subjecting them to rubbing treatment, liquid crystal molecules can be arranged in a certain direction. The alignment films 203 and 205 are made of an organic thin film such as a polyimide thin film, and have a film strength corresponding to the Rabin tool treatment and a good adhesion to an ITO (Indium Thin Oxide) film or the like. By irradiating the liquid crystal display with backlight light and causing the liquid crystal layer 204 to function as an optical shutter for changing the transmittance of the backlight light, color display can be performed. The backlight light has a brightness of the liquid crystal display of 400 c
d / m ² , the liquid crystal transmittance (3% to 6 in color)
%) Is set to 13000 cd / m ² or more.

(Manufacturing Process of Color Liquid Crystal Display) Next, the manufacturing process of the color liquid crystal display will be described with reference to FIGS. FIG. 4 is a sectional view of a color liquid crystal display during a manufacturing process.

Partition Member Precursor Forming Step (FIG. 5A) A partition member precursor 102 a is formed on the glass substrate 101. As the glass substrate 101, for example, 370 mm ×
A flat transparent glass substrate having a dimension of 470 mm and a thickness of about 1.1 mm is prepared. This transparent glass substrate has a temperature of 350 ° C.
It is preferably a material that can withstand the heat of the above, is not easily attacked by chemicals such as acids and alkalis, and can be mass-produced.

Although various compositions can be used for the partition member 102, the present embodiment describes a case where the partition member 102 functions as a black matrix. As the partition member precursor 102a, an appropriate material can be appropriately selected and used as long as it is a material having no light transmission property and durability. Specifically, a resin obtained by dissolving a black resin such as a negative resin black manufactured by Fuji Hunt Co., a resist HRB- # 01 for high insulation black matrix manufactured by Toppan Printing Co., Ltd. Can be used. These resins have a predetermined thickness, for example, 1%, by spin coating, dipping, spray coating, roll coating, bar coating, or the like.
A film is formed in a range of μm to 2 μm.

In addition to these resins, resin black in which chromium metal, carbon or titanium is dispersed in a photoresist, nickel, a two-layer structure of chromium and chromium oxide, or the like can be used. In this case, the partition member precursor 102a is formed by a sputtering film forming method, a vapor deposition method, or the like.

Partition Member Forming Step (FIG. 5B) A resist (not shown) is applied on the partition member precursor 102a, and is exposed and developed into a desired pattern. Next, using the resist as a mask, the partition member precursor 102a is etched. The etching of the partition member precursor 102a includes:
As shown in FIG. 3, cylindrical filter elements 102b having a diameter of 20 μm to 30 μm are formed at a pitch of 70.5 μm. Further, the interval between the rows of the filter elements 102b is 141 μm. In addition, as shown in FIG. 3C, in the case where the cross-sectional shape of the partition member 102 is tapered, it is possible to appropriately set etching conditions.

However, the arrangement pitch of the filter elements 102b and the interval between the rows of the filter elements 102b are not limited to the above values, and may be the same as the arrangement pitch of the nozzles of the ink jet recording head and the interval between the nozzle rows.

Ink Filling Step (FIG. 5 (C)) Each filter element 102b is colored by discharging ink onto the filter elements 102b partitioned and formed in a grid by the partition member 102, and filled with ink.
In the figure, red ink 20a, blue ink 21a,
The state where the green ink 22a is ejected toward the filter element 102b is shown. The ink jet recording head 9 scans the partition member 102 along the filter element 102b at a speed of 508 mm / s.
After coloring one row of filter elements 102b, it returns to the original position again and colors the next row of filter elements 102b.

In this case, the ink jet recording head 9
The ink ejected from the filter element 10
It is desired to land on 2b. For this reason, the composition of the ink is such that a pigment or dye as a coloring material is 1% to 40%.
Containing 1% to 40% of resin or surfactant as a dispersant
%, Polyhydric alcohol as humectant from 1% to 40%
Contains 1% to 40% of lower alcohol as penetrant and 5% to 95% of water or water-soluble organic solvent as solvent
It is preferred to include. By making the ink this composition,
The contact angle with the material constituting the nozzle surface of the ink jet recording head can be set in the range of 30 deg to 170 deg. Further, the viscosity of the ink can be set in the range of 1 cp to 20 cp, and the surface tension of the ink can be set to 20 dyne to 7 cp.
It can be set in the range of 0 dyne. For this reason, the straightness of the ink is excellent, and the circular filter element 102b is formed.
Can be reliably landed. Further, with the above composition, the time until the ink dries on the surface of the nozzle 51 and the solid component precipitates can be lengthened, so that the ink on the surface of the nozzle 51 can be made fresh. For example, the ink for coloring the red coloring pattern layer 20 contains 2% to 5% of Lake Red C as a coloring material and 1% to 30% of an acrylic resin as a dispersant.
It is preferable to use an ink containing 1% to 20% of glycerin as a wetting agent, 3% to 10% of ethanol as a penetrant, and 10% to 80% of water as a solvent.

Firing Step (FIG. 6D) After the ink is filled in the filter element, a heat treatment is performed to volatilize the solvent component in the ink and obtain solidified colored pattern layers 20, 21 and 22. Heat treatment is
For example, it is performed by using a heater, and is performed by heating the whole to a predetermined temperature, for example, 110 ° C. When the solvent of the ink volatilizes, the volume of the ink decreases, but when the volume phenomenon is remarkable, the ink filling step and the baking step are repeated until a sufficient thickness is obtained as a color filter. By this treatment, the solvent component of the ink evaporates, and a colored pattern layer having a desired thickness is formed.

After the colored pattern layer is formed, heating is performed at a predetermined temperature, for example, 180 ° C. for a predetermined time, for example, one hour, in order to completely dry the ink droplets.

Protective Film Forming Step (FIG. 6E) In this step, a desired resin is used to cover the formed colored pattern layer to protect the colored pattern layer and to flatten the filter surface. Then, a protective film 103 is formed. As the protective film 103, a material that can be cured by any of light, heat, or both energy of light and heat can be used. According to such a material, a general-purpose exposure apparatus, a baking furnace, a hot plate, or the like can be used, and the cost of the equipment can be reduced. Specifically, acrylates such as epoxy acrylates, urethane acrylates, polyester acrylates, polyether acrylates, spiroacetal acrylates, epoxy methacrylates, urethane methacrylates, polyesters as UV-curable acrylic resins Methacrylates such as methacrylates and polyether methacrylates can be used. There are many UV-curable acrylic resins on the market, and photosensitive agents are easily available.
These resins are applied to a predetermined thickness, for example, 2 μm by spin coating or the like. When an inorganic film is used, the film is formed by an evaporation method, a sputtering method, or the like.

Common electrode forming step (FIG. 6 (F)) In this step, a light-transmitting conductive material, for example, ITO, a composite oxide of indium oxide and zinc oxide, or the like is formed on the protective film 103 by a sputtering method or the like. At a predetermined thickness, for example, 0.1
A film is formed to a thickness of 5 μm.

After the color filter 10 is formed by the above steps, the glass substrate 20 on which the pixel electrode 206 is disposed is separately provided.
7, an alignment film 203, a liquid crystal layer 204, and an alignment film 205 are further formed, and polarizing plates 201 and 208 are attached to manufacture a color liquid crystal display.

(Modification of Partition Member) In the above description, the filter element 1 formed on the partition member 102 has been described.
02b is a lattice mosaic type, but may be a delta type as shown in FIG. 7 or a stripe type as shown in FIG. In the case of the stripe type shown in FIG. 8, the shape of the filter element 102b is not circular, but each circular region overlaps each other while shifting the center. Therefore, this type of filter element 1
When coloring 02b, the respective inks ejected overlap with each other to form a colored pattern layer. According to this type of filter element 102b, a color filter can be formed without reducing the aperture ratio of the liquid crystal display.

Further, the partition member of the present invention can be applied to a display device utilizing a light emission phenomenon in which an electric field is applied to a phosphor such as an EL (electroluminescent) to emit light in addition to a color filter. In particular, it is suitable for a partition member of an active matrix display device.

As described above, according to the present embodiment, since the shape of the partition member surrounding the filter element is a shape corresponding to the ink droplet, that is, a circular shape, complicated ink ejection control is not required. In addition, color loss of the filter element can be easily suppressed. In addition, since the ink jet recording head uses a piezoelectric thin film element that performs an electromechanical conversion function, and the filter element is colored using ink excellent in ink ejection straightness, flight bending in ink ejection does not occur, Since the ink can be surely landed on the filter element, it is possible to prevent color omission. Further, since the arrangement pitch of the filter elements is the same as the arrangement pitch of the nozzles of the ink jet recording head, control of the ink jet recording head in coloring the filter elements becomes easy.

[0036]

According to the color filter of the present invention, since the shape of the partition member surrounding the filter element is made circular in accordance with the ink droplets, the color loss of the filter element can be easily performed without complicated ink ejection control. Can be suppressed.

According to the color filter manufacturing method of the present invention, the arrangement pitch of the filter elements and the interval between the filter element rows are the same as the arrangement pitch of the nozzles and the interval between the nozzle rows of the ink jet recording head.
It becomes easy to control the ink jet recording head in coloring the filter element.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of an ink jet recording head.

FIG. 2 is an explanatory diagram of the operation principle of an ink jet recording head.

FIG. 3 is a plan view and a sectional view of a partition member according to the present invention.

FIG. 4 is a sectional view of a color liquid crystal display according to the present invention.

FIG. 5 is a cross-sectional view showing a manufacturing process of the color filter according to the present invention.

FIG. 6 is a cross-sectional view illustrating a manufacturing process of the color filter according to the present invention.

FIG. 7 is a plan view of a partition member according to the present invention.

FIG. 8 is a plan view of a partition member according to the present invention.

FIG. 9 is an explanatory diagram for coloring a conventional rectangular color filter with ink droplets.

[Explanation of symbols]

 Reference Signs List 1 pressure chamber substrate 106 pressure chamber 107 side wall 110 common flow path 5 nozzle plate 51 nozzle 4 wiring board 3 base 102 partition member 102b filter element 101 glass substrate 103 protective film 202 common electrode 203 alignment film 204 liquid crystal layer 205 alignment film 206 Pixel electrode 207 Glass substrate 208 Polarizing plate 201 Polarizing plate 10 Color filter 2 Color liquid crystal display 20 Colored pattern layer (red) 21 Colored pattern layer (blue) 22 Colored pattern layer (green)

 ──────────────────────────────────────────────────の Continuation of the front page (72) Inventor Shunichi Seki 3-5-5 Yamato, Suwa City, Nagano Prefecture Inside Seiko Epson Corporation

Claims (16)

[Claims] 1. A color filter having a plurality of rows and a partition member for partitioning each of light transmitting regions formed on a transparent substrate at a predetermined arrangement pitch, wherein a planar shape of the partition member surrounding the light transmitting region is provided. A color filter having a substantially circular shape. 2. The method according to claim 1, wherein the diameter of the substantially circular shape is 20 μm to 30 μm.
The color filter according to claim 1, wherein the color filter has a range of μm. 3. The color filter according to claim 1, wherein the color filter is replaced by a “polygon” instead of the “substantially circular”. 4. The color filter according to claim 1, wherein a sectional shape of the partition member surrounding the light transmitting region is a tapered shape having a wide opening. 5. The ink jet recording head according to claim 1, wherein the predetermined arrangement pitch is the same as an arrangement pitch of nozzles of an ink jet recording head for discharging ink for coloring the light transmitting region. The color filter according to 1. 6. The space between the rows of the light transmitting areas is the same as the space between the rows of the nozzles of the ink jet recording head that ejects ink for coloring the light transmitting areas. The color filter according to any one of the above. 7. The color filter according to claim 1, wherein the partition member is made of a light-shielding material. 8. A liquid crystal is sealed between the color filter according to claim 1 and a second transparent substrate having a pixel electrode and an alignment film formed on a surface thereof. A composed color liquid crystal display. 9. A method of manufacturing a color filter for ejecting ink droplets from an ink jet recording head and coloring light transmitting regions defined in a plurality of rows at a predetermined arrangement pitch by a partition member formed on a transparent substrate. A step of filling each of the light transmitting areas defined by the partition member with a substantially circular shape with ink, a step of drying each ink filled in the light transmitting areas, and a step of protecting the dried ink. Forming a film. 10. The method according to claim 1, wherein the diameter of the substantially circular shape is 20 μm to 3 μm.
The method for producing a color filter according to claim 9, wherein the thickness is in a range of 0 µm. 11. The method for manufacturing a color filter according to claim 8, wherein a “polygon” is used instead of the “substantially circular” described in claim 9. 12. The color filter according to claim 9, wherein the predetermined arrangement pitch is the same as the arrangement pitch of the nozzles of the ink jet recording head that discharges the ink for coloring the light transmitting region. Production method. 13. The space between the rows of the light transmitting areas is the same as the space between the rows of the nozzles of the ink jet recording head that ejects ink for coloring the light transmitting areas.
The method of manufacturing a color filter according to claim 9. 14. The method for manufacturing a color filter according to claim 9, further comprising a step of forming the partition member with a light-shielding material. 15. The method according to claim 9, wherein the step of filling the light transmitting region with ink is performed by an ink jet recording head using a piezoelectric thin film element functioning as an electromechanical conversion element as a pressure source for discharging ink. 15. The method for producing a color filter according to any one of 14. 16. The method for manufacturing a color filter according to claim 9, wherein a pixel electrode and an alignment film are formed on a second transparent substrate. Sealing a liquid crystal between the second transparent substrate and the second transparent substrate.