JP2002318307A - Method and device for manufacturing color filter and color filter substrate - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method and a device for manufacturing a color filter for improving efficiency of an area on which ink is discharged in a preliminary discharge region, besides increasing total possible discharge amount in the preliminary discharge region with a definite area and further preventing a defective product and a color filter substrate. SOLUTION: A dummy cell 5 in the preliminary discharge region 4 is formed by surrounding an area larger than that of a cell 3 in an effective pixel region 2 and the preliminary discharge is carried out on the dummy cell 5 from an inkjet head. Thereby the efficiency of the area on which the ink 8 is discharged in the preliminary discharge region 4 is improved and the total possible discharge amount in the preliminary discharge region 4 with the definite area is increased. Also because the dummy cell 5 is surrounded by a black matrix 6, the ink 8 does not flow out to the side of the effective pixel region 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a method and an apparatus for manufacturing a color filter.

[0002]

2. Description of the Related Art In recent years, a method of manufacturing a color filter, which is a component of a liquid crystal display device, by drawing using an ink jet system has been realized. The color filter is
On a transparent substrate such as a glass substrate, R (red),
A filter element having three primary colors of G (green) and B (blue) light is formed. One color is used in a conventionally used dyeing method, pigment dispersion method, electrodeposition method, printing method, and the like. These steps need to be repeated at least three times in order to form a colored layer by coloring each time, and there is a disadvantage that the number of manufacturing steps becomes large. On the other hand, according to the ink jet method, three colors of ink can be ejected in parallel, so that the coloring step can be performed less than three times, and there is an advantage that the number of manufacturing steps can be reduced accordingly. .

In this type of color filter drawing apparatus, as shown in FIG. 25, a preliminary discharge area 4 is provided immediately before an effective pixel area 2 on the substrate 1 in order to secure ink ejection stability at the beginning of drawing. Is formed, a plurality of dummy cells 5 having the same shape as the cells 3 of the effective pixel area 2 are formed in the preliminary discharge area 4, and a preliminary discharge operation of discharging ink into the dummy cells 5 is performed in advance. In FIG. 25, reference numeral 6 denotes a black matrix which forms the frame portion and the inter-cell portion of the cell 3 in the effective pixel region 2, and is also formed as the frame portion and the inter-cell portion of the dummy cell 5 in the preliminary ejection region 4.

If the waiting time for not discharging ink continues before discharging ink to the cells in the effective pixel area, the viscosity of the ink on the nozzle surface of the ink jet head increases,
Ink is difficult to eject from an inkjet head or part of the head, or becomes unstable. Discharge and color mixing occur, and the yield in the product manufacturing process is reduced.
In order to prevent such problems, bending at the beginning of ejection and
To the extent that discharge failures such as non-discharge and discharge amount change disappear,
It is desirable that a sufficient preliminary discharge operation be performed on the dummy cell immediately before the drawing operation, and that the discharging operation be stabilized before drawing the effective pixel area.

Here, as a conventional preliminary discharge operation, as described above, a dummy cell 5 having the same shape as the cell 3 of the effective pixel region 2 is formed immediately before the effective pixel region 2 on the substrate 1 and the effective pixel region 2 is formed. The ink is ejected to the dummy cell 5 under the same condition as the ejection condition for the cell 3.

[0006]

However, in such a conventional preliminary discharge operation, as shown in FIGS. 25 and 26, the area ratio of the dummy cells 5 which can be preliminary-discharged in the preliminary discharge region 4 is small. The area efficiency at which the ink 8 can be ejected in the area 4 becomes low, and the total ejection amount that can be ejected in the preliminary ejection area 4 having a certain area must be relatively small. As a result, the effective pixel area 2
In some cases, sufficient ejection characteristics cannot be recovered before the ink 8 is ejected to the cell 3 of FIG. 26, and as shown in FIG. 26, a defect due to a small ejection amount and color mixing due to ejection bending (portion m in FIG. 26). Occurred and was bad.

In this way, when the dummy cells 5 each having a small area are preliminarily ejected with a sufficient amount of the ink 8 so as to recover good ejection characteristics, the thickness of the ejected ink 8 is reduced. If the height exceeds the height of the dummy cell 5 in the preliminary ejection region 4, the bonding occurs in the bonding step, and a good bonding operation cannot be performed.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and can improve the area efficiency at which ink can be ejected in a preliminary ejection region, and increase the total ejection amount that can be ejected in a preliminary ejection region having a fixed area. It is an object of the present invention to provide a color filter manufacturing method, a color filter manufacturing apparatus, and a color filter substrate, which can further prevent product defects.

[0009]

In order to solve the above-mentioned problems, a method of manufacturing a color filter according to the present invention is directed to a method of manufacturing a color filter, in which a filter material ink is applied to cells in an effective pixel area formed by a black matrix on a transparent substrate. A drawing step of discharging by an inkjet head, and a preliminary discharge step of discharging ink from the inkjet head in advance to a dummy cell in a preliminary discharge area arranged at a position before the effective pixel area in the head relative movement direction before the drawing step. In the method for manufacturing a color filter, a dummy cell is formed by surrounding the area of the preliminary discharge area larger than a cell of the effective pixel area by a black matrix, and preliminary discharge is performed in the dummy cell.

According to this method, the area efficiency at which ink can be ejected in the preliminary ejection area can be improved,
Further, it is possible to increase the total discharge amount that can be discharged in the preliminary discharge region having a fixed area, and to prevent product defects.

[0011]

According to the first aspect of the present invention, there is provided a drawing step in which an ink serving as a filter material is discharged from an ink jet head to cells in an effective pixel area formed by a black matrix on a transparent substrate, and the drawing step is performed. A preliminary ejection step of ejecting ink from an inkjet head in advance to a dummy cell in a preliminary ejection region arranged at a position before the effective pixel region relative to the head relative movement direction before the effective pixel region, the method comprising: The preliminary discharge region is characterized in that a dummy cell is formed by surrounding a larger area than the cells of the effective pixel region by a black matrix, and preliminary discharge is performed in the dummy cell.

According to a second aspect of the present invention, in the method of manufacturing a color filter according to the first aspect, the preliminary ejection region is divided into a plurality of portions in a nozzle arrangement direction of the ink jet head orthogonal to the head relative movement direction. By forming a black matrix, a plurality of dummy cells are formed in the nozzle arrangement direction, and preliminary discharge is performed on the dummy cells.

According to a third aspect of the present invention, in the color filter, cells of RGB filter colors are arranged in a delta, and the ink jet head is reciprocated relative to the substrate.
A method of manufacturing a color filter in which a filter element is formed by discharging ink to cells different from each other when a relative movement of a forward path and a relative movement of a return path by an ink jet head are performed, and a preliminary discharge area for a forward path and a method for a return path The preliminary discharge is provided to each of the dummy cells in the preliminary discharge area for the forward path when the ink jet head relatively moves the outward path, and the preliminary discharge for the backward path when the ink jet head relatively moves the return path. It is characterized in that preliminary discharge is performed to dummy cells in the region.

According to a fourth aspect of the present invention, in the method of manufacturing a color filter according to the third aspect, a position in the nozzle arrangement direction corresponding to a cell which is not ejected by the ink jet head in the forward movement relative movement in the forward ejection preliminary ejection area. By forming a black matrix, a dummy cell divided in the nozzle arrangement direction is formed, and a black matrix is formed at a position in the nozzle arrangement direction corresponding to a cell which is not ejected by the ink jet head in the backward movement of the preliminary ejection area for the backward movement. Is formed, dummy cells divided in the nozzle arrangement direction are formed, and preliminary discharge is performed on each of these dummy cells.

According to a fifth aspect of the present invention, in the method of manufacturing a color filter according to any one of the first to fourth aspects, an ejection state test is provided between the effective pixel area and the preliminary ejection area by the inkjet head. The method is characterized in that ink is ejected to a region and the ejection state is inspected.

According to a sixth aspect of the present invention, there is provided an ink jet head for ejecting an ink serving as a filter material to a substrate, and a moving means for moving the ink jet head relative to the substrate. Before discharging the ink serving as the filter material to the cells of the formed effective pixel region by the inkjet head,
An apparatus for manufacturing a color filter for ejecting ink from an ink jet head in advance to dummy cells in a preliminary ejection region arranged at a position before the effective pixel region in the head relative movement direction, wherein the preliminary ejection region is provided with a dummy cell in the preliminary ejection region in comparison with a cell in the effective pixel region. A dummy cell is formed by enclosing a large area with a black matrix, and a control unit is provided for controlling an ink jet head to perform preliminary ejection into the dummy cell.

According to a seventh aspect of the present invention, in the color filter manufacturing apparatus of the sixth aspect, the preliminary discharge area is divided into a plurality of parts in a nozzle arrangement direction of the ink jet head orthogonal to the head relative movement direction. By forming a black matrix, the preliminary discharge region is configured to form a plurality of dummy cells divided in the nozzle arrangement direction.

The invention according to claim 8 is the invention according to claim 6 or 7.
Wherein the cells of the RGB filter colors in the color filter are arranged in a delta, the ink jet head is reciprocated relative to the substrate, and the ink jet head is relatively moved in the forward path and in the return path. A color filter manufacturing apparatus for forming a filter element by discharging ink to cells different from each other when forming a preliminary discharge area for a forward path and a preliminary discharge area for a return path using a black matrix. Features.

According to a ninth aspect of the present invention, in the color filter manufacturing apparatus of the eighth aspect, the position in the nozzle arrangement direction corresponding to a cell which is not ejected by the ink jet head in the forward movement relative movement in the forward movement preliminary ejection area. And a black matrix is formed at a position in the nozzle arrangement direction corresponding to a cell which is not ejected by the inkjet head during the relative movement of the return path in the preliminary discharge area for the return path.

According to a tenth aspect of the present invention, in the color filter manufacturing apparatus according to any one of the sixth to ninth aspects, the discharge is performed to the discharge state inspection area provided between the effective pixel area and the preliminary discharge area. And an inspection means for inspecting the ink discharge state.

According to an eleventh aspect of the present invention, there is provided a color filter substrate in which a filter element is formed by discharging ink serving as a filter material onto a substrate on which a black matrix is formed by an ink jet head, and functions as a color filter. An effective pixel area and a preliminary ejection area where ink is ejected and do not function as a color filter are provided. Dummy cells provided in the preliminary ejection area and ejecting ink have a larger area than cells in the effective pixel area. It is characterized by being formed by being surrounded by a matrix.

According to a twelfth aspect of the present invention, in the color filter substrate according to the eleventh aspect, the preliminary discharge area is divided into a plurality of parts by a black matrix in a nozzle arrangement direction of the ink jet head orthogonal to the head relative movement direction. , A plurality of dummy cells are formed in the nozzle arrangement direction.

According to a thirteenth aspect of the present invention, in the color filter, cells of RGB filter colors are arranged in a delta,
A color filter substrate on which a filter element is formed by ejecting ink to cells different from each other when the inkjet head is reciprocated relative to the substrate, and when the inkjet head is relatively moved on the outward path and when the inkjet head is relatively moved on the return path. And by the black matrix,
It is characterized in that the preliminary discharge area for the forward path and the preliminary discharge area for the return path are surrounded and formed.

According to a fourteenth aspect of the present invention, in the color filter substrate according to the thirteenth aspect, the black matrix is provided at a position in the nozzle arrangement direction corresponding to a cell which is not ejected by the ink jet head in the outward movement relative to the preliminary ejection area for the outward movement. Is formed, a dummy cell divided in the nozzle arrangement direction is formed, and a black matrix is formed at a position in the nozzle arrangement direction corresponding to a cell which is not ejected by the inkjet head during the backward movement in the preliminary ejection area for the backward movement. Thereby, a dummy cell divided in the nozzle arrangement direction is formed.

The invention according to claim 15 is the invention according to claims 11 to 1
5. In the color filter substrate according to any one of the aspects 4, an ejection state inspection area for confirming an ejection state is provided between the effective pixel area and the preliminary ejection area.

According to the first, sixth and eleventh aspects of the present invention,
A dummy cell of the preliminary ejection region was formed so as to surround an area larger than the cell of the effective pixel region, and preliminary ejection was performed on the dummy cell, so that the dummy cell of the preliminary ejection region was formed to have the same area as the cell of the effective pixel region. As compared with the case, the area efficiency at which ink can be ejected in the preliminary ejection region can be improved, and the total ejection amount that can be ejected in the preliminary ejection region having a fixed area can be increased. Further, since the dummy cells are surrounded by the black matrix, the ink does not flow to the effective pixel area side.
Further, in consideration of the occurrence of ejection bending in the initial stage of the preliminary ejection, the black matrix is formed so that the preliminary ejection area is slightly wider than the ink ejection setting position from the inkjet head, so that the ink is applied to the black matrix. Therefore, it is possible to prevent a defect in the bonding process due to the adhesion of the ink onto the black matrix.

According to the second, seventh and twelfth aspects of the invention,
Since the dummy cells in the preliminary ejection area are divided into a plurality of parts by the black matrix in the nozzle arrangement direction of the inkjet head orthogonal to the head moving direction, when the black matrix or the substrate has high liquid repellency to ink, As compared with the case where the preliminary ejection area is not divided in the nozzle arrangement direction, the height of the swelling at the center of the ink is smaller, and in the subsequent step of attaching the color filter substrate, a bounce occurs and a bonding failure occurs. Is prevented.

That is, when the black matrix has high liquid repellency to the ink, the component having the liquid repellency of the black matrix elutes well onto the substrate, and the substrate surface also has strong liquid repellency. Become. When the influence of the liquid repellency increases, the ink is repelled on the substrate surface and the ink is a large lump, so that the height of the center of the ink becomes large. On the other hand, when the dummy cells in the preliminary ejection area are divided into a plurality of parts by the black matrix in the direction in which the nozzles of the ink jet head are arranged, the width of the ink is reduced by being separated, so that the ink becomes the black matrix. Upon contact, flipping on the substrate surface is less likely to occur, the swell height is reduced, and bonding failure is reduced.

According to the third, eighth and thirteenth aspects of the invention,
Since the preliminary discharge area for the forward path and the preliminary discharge area for the return path are separately formed, the preliminary discharge operation is performed at a suitable timing and position when the ink jet head moves on the forward path and when moving on the return path. It can be performed.

According to the fourth, ninth and fourteenth aspects of the invention,
In the pre-discharge area for the forward pass and the return pass, the black matrix for dividing the pre-discharge area is provided in a slit shape at the position in the nozzle arrangement direction corresponding to the cell that does not discharge, that is, at the position where the pre-discharge is not performed. in this way,
By forming a slit by the black matrix in the non-ejection area in the preliminary ejection area, it is possible to prevent ink from spreading in the lateral direction where the liquid repellency is weak in the preliminary ejection area, and ink repelling occurs near the black matrix. Since it disappears, the swelling of the ink can be suppressed. Thereby, it is possible to further reduce defective bonding due to an increase in the height of ink swelling.

According to the fifth, tenth, and fifteenth aspects of the present invention, since the ejection state inspection area for checking the ejection state is provided between the effective pixel area and the preliminary ejection area, the preliminary ejection is effective. The ejection state immediately before the ejection to the pixel area can be confirmed, and the ejection state in the effective pixel area can be estimated.

According to a sixteenth aspect of the present invention, before the ink serving as the filter material is ejected to the cells of the effective pixel area by the ink jet head, the preliminary ejection area disposed before the effective pixel area in the head relative movement direction. A method of manufacturing a color filter comprising a step of previously discharging ink from an inkjet head to a dummy cell, wherein the discharge force of the inkjet head to a preliminary discharge region is set to be larger than the discharge force to an effective pixel region. It is characterized by ejecting ink.

According to a seventeenth aspect of the present invention, in the method of manufacturing a color filter according to the sixteenth aspect, when the ink is ejected to the preliminary ejection region by the ink jet head, the ejection frequency of the ink jet head is adjusted to the effective pixel region. By making the ejection frequency different from the ejection frequency, the ejection force of the inkjet head to the preliminary ejection region is made larger than the ejection force to the effective pixel region.

According to an eighteenth aspect of the present invention, in the method of manufacturing a color filter according to the sixteenth aspect, when the ink is ejected to the preliminary ejection area by the ink jet head, the amplitude of the control signal of the ejection actuator in the ink jet head is set to an effective pixel. The discharge force of the inkjet head to the preliminary discharge region is made larger than the discharge force to the effective pixel region by making the amplitude larger than that at the time of discharge to the region.

According to a nineteenth aspect of the present invention, in the method for manufacturing a color filter according to the sixteenth aspect, when the ink is ejected to the preliminary ejection area by the inkjet head, the pulse width of the control signal of the ejection actuator in the inkjet head is made effective. By making the pulse width larger than the pulse width at the time of ejection to the pixel region, the ejection force of the inkjet head to the preliminary ejection region is made larger than the ejection force to the effective pixel region.

According to a twentieth aspect of the present invention, there is provided an ink-jet head for discharging ink serving as a filter material to a substrate, and a moving means for relatively moving the ink-jet head with respect to the substrate. An apparatus for manufacturing a color filter for ejecting ink from an inkjet head in advance to dummy cells in a preliminary ejection area, which is located at a position before the effective pixel area in the head relative movement direction, before ejecting ink serving as a filter material to cells. Further, a control means for controlling the ejection force of the ink jet head to the preliminary ejection region to be greater than the ejection force to the effective pixel region is provided.

According to a twenty-first aspect of the present invention, in the color filter manufacturing apparatus according to the twentieth aspect, the control means sets the ejection frequency of the ink jet head to the effective pixel area when the ink is ejected to the preliminary ejection area by the ink jet head. The ejection frequency of the inkjet head to the preliminary ejection area is controlled to be larger than the ejection power to the effective pixel area by making the ejection frequency different from the ejection frequency of the inkjet head.

According to a twenty-second aspect of the present invention, in the color filter manufacturing apparatus according to the twentieth aspect, the control means controls a discharge actuator control signal in the ink jet head when the ink is discharged from the ink jet head to the preliminary discharge area. Is controlled so that the ejection force of the inkjet head to the preliminary ejection region becomes larger than the ejection force to the effective pixel region by making the amplitude of the ejection to the effective pixel region larger than the amplitude of the ejection to the effective pixel region.

According to a twenty-third aspect of the present invention, in the color filter manufacturing apparatus according to the twentieth aspect, the control means controls the ejection actuator of the inkjet head when the inkjet head ejects ink to the preliminary ejection area. Is controlled so that the ejection force of the inkjet head to the preliminary ejection region is larger than the ejection force to the effective pixel region by making the pulse width larger than the pulse width at the time of ejection to the effective pixel region. .

According to the sixteenth and twentieth aspects of the present invention, the ink is ejected by setting the ejection force of the ink jet head to the preliminary ejection region to be greater than the ejection force to the effective pixel region. Even if the area is relatively small, the thickened ink can be reliably ejected at the time of preliminary ejection, and the transition to a favorable ejection state can be quickly performed.

The invention according to claim 24 is the invention according to claims 11 to 1
5. In the color filter substrate according to any one of the items 5, a filter element is formed by ejecting ink serving as a filter material to a substrate on which a black matrix is formed by an inkjet head, and an effective pixel region corresponding to the color filter is vertically and horizontally. A color filter substrate in which a plurality of color filters are arranged in a matrix, and a preliminary discharge area is formed only at a position near an end in a head relative movement direction of the multi-area removal area, and is provided between effective pixel areas of the color filter. It is characterized by not being done.

According to the twenty-fifth aspect of the present invention,
20. The method for manufacturing a color filter according to any one of 16 to 19, wherein an ink serving as a filter material is discharged by an inkjet head onto a substrate on which a black matrix is formed to form a filter element. What is claimed is: 1. A method of manufacturing a color filter, in which pixel regions are arranged vertically and horizontally on a substrate, and a color filter is formed on a plurality of planes. It is characterized in that the ink is preliminarily ejected to a preliminary ejection area not provided between them.

The invention according to claim 26 is the invention according to claims 6-1.
In the apparatus for manufacturing a color filter according to any one of 0, 20 to 23, a filter element is formed by ejecting an ink serving as a filter material to a substrate on which a black matrix is formed by an inkjet head to form a filter element. An apparatus for producing a color filter, in which effective pixel regions are arranged vertically and horizontally on a substrate and a plurality of color filters are formed. Black matrix forming means is provided which surrounds a preliminary discharge area not provided between pixel areas with a black matrix.

According to the twenty-fourth, twenty-fifth, and thirty-sixth aspects of the present invention, no preliminary ejection area is provided between the effective pixel areas of the color filter. Improving the occupancy of the effective pixel area on the substrate by the amount that the preliminary ejection area is not provided between the effective pixel areas while the ink can be favorably ejected to the cells of the next effective pixel area before the state changes. Can be.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. As schematically shown in FIGS. 1 and 2, the color filter 7 is designed to be multi-faced from one color filter substrate 20, for example, 25 (= 5 × 5).

The color filter manufacturing apparatus uses a known method such as a printing method to form three colors (R) on a transparent substrate 1 such as a glass substrate on which a black matrix 6 is formed.
(Red), G (green), B (blue)) ink 8 (8R, 8
G, 8B) for discharging and coloring (FIG. 3
Reference).

The coloring apparatus 10 of the color filter manufacturing apparatus includes a moving stage 11 that can move in the XYθ directions while the substrate 1 is placed, an ink jet head 12 that is disposed above the position where the substrate is placed, and a moving stage. And a positioning camera 13 for recognizing a positioning mark of the substrate 1 placed on the substrate 11 and positioning the substrate 1 at an appropriate position. Then, the substrate 1 is placed on the moving stage 11.
In this state, the ink is ejected from the inkjet head 12 while the moving stage 11 is moved in the X direction, and the coloring operation is performed.

The ink-jet head 12 includes a blue head group 12B for discharging a blue filter material ink, a red head group 12R for discharging a red filter material ink, and a green head group for discharging a green filter material ink. 12G, and each of the head groups 12B, 12R, 12G is arranged substantially in the Y direction. In this embodiment, the head groups 12B, 12R, and 12G are arranged in a staggered position with a slight shift in the X direction, which is the head relative movement direction, due to the positional relationship, but by changing the ejection timing. The driving control operation is substantially the same as that in the case of being arranged in a line in the Y direction. Note that, for ease of understanding, in the following description,
Each of the head groups 12B, 12R, and 12G is in the Y direction 1
The description will be made assuming that they are arranged in a column.

As shown in FIGS. 1 and 2, in this embodiment, the head relative movement direction (X) corresponds to each effective pixel region (a region which is finally cut and becomes a color filter 7). The preliminary ejection region 4 is provided at a position just before (direction). In particular, the black matrix 6 is formed so as to surround a large area of the entire preliminary ejection area 4 (an area much larger than the cell 3 of the effective pixel area 2), and a frame of the dummy cell 5 is formed. And the effective pixel area 2
Of ink 8 (8R, 8G, 8
Before ejecting B), the ink 8 is ejected from the inkjet head 12 to the dummy cells 5 in the preliminary ejection area 4 in advance.

In the color filter substrate 20 shown in FIG. 1, the cells 3 (3R,
3G, 3B) are arranged in a delta arrangement (arrangement in which three colors have a substantially triangular shape). Then, the inkjet head 12
The three colors are almost simultaneously colored while reciprocating relative to the substrate 1. On the other hand, when the ink jet head 12 relatively moves the forward path and the backward path, the different cells 3 are used. The ink 8 is ejected. That is, as shown in FIG.
Head nozzles 12R-1,1 displaced by 5 pixels
2B-1, 12G-1 (the head nozzle 12
B-1 and the head nozzles 12R-1 and 12G-1 are displaced by one pixel), and ink is ejected to the set of triangular cells 3 indicated by the dotted line on the outward path,
In the return path, the substrate 1 is moved in the Y direction by 1.5 pixel pitches by the moving stage 11 and then moved in the return direction along the X direction while ink is applied to the cells 3 in a set of triangular portions as indicated by the two-dot chain line. Is ejected to draw. (In FIG. 4,
For simplicity, arrows indicate the relative movement direction of the inkjet head 12 with respect to the substrate 1 during the forward movement. In practice, the inkjet head 12 is fixed, and the substrate 1 side moves. In response to this, each of the preliminary discharge areas 4
At (4A, 4B), the ink 8 is ejected in advance.

As described above, the dummy cell 5 having a large area surrounding the entire pre-ejection area 4 is formed, and the pre-ejection is performed on the dummy cell 5 so that the dummy cell 5 in the pre-ejection area 4 is replaced with the cell in the effective pixel area 2. Since the preliminary ejection area 4 is wider than when formed in the same area as the area 3, a large amount of the ink 8 can be ejected to the preliminary ejection area 4.

As a result, the dummy cell 5 in the preliminary ejection area 4 is replaced with the effective pixel area 2 as in the prior art (see FIG. 25).
When the dummy cell 5 is formed in the same area as the cell 3,
Since only a small amount of ink can be ejected to the ink jet head, a large preliminary ejection area 4 is required. However, according to the present invention, since the ink 8 can be ejected to the entire preliminary ejection area 4, Even if only the preliminary ejection region 4 having an area smaller than the conventionally required preliminary ejection region 4 is provided, the preliminary ejection can be sufficiently performed. As a result, the ink 8 can be satisfactorily ejected to the cells 3 of the effective pixel area 2 and the preliminary ejection area 4 can be reduced in area, so that the area efficiency can be improved accordingly. Further, since the dummy cells 5 are surrounded by the black matrix 6, the ink does not flow out to the effective pixel region 2 side or the like.

Further, in consideration of the occurrence of ejection bending at the beginning of the preliminary ejection, the preliminary ejection area 4 is widened by a distance L (see FIG. 1) from the end of the ink ejection setting position from the ink jet head 12. By forming the black matrix 6 so that the ink 8 can be prevented from being discharged onto the black matrix 6, it is possible to prevent a defect in the bonding process due to the discharge of the ink 8 onto the black matrix 6. Can be.

In the example shown in FIG. 4, while using the head nozzles 12B-1, 12R-1, and 12G-1, the dummy cells 5 in the preliminary ejection area 4A and the triangular portions indicated by the dotted lines are used on the outward path. Ink 8 (8
R, 8G, 8B), and the preliminary ejection area 4B
Has been described in which the ink 8 (8R, 8G, 8B) is ejected and drawn on the dummy cell 5 and the cell 3 of the set of triangular portions as indicated by the two-dot chain line, but the present invention is not limited to this. As shown in FIG. 5 and FIG.
Head nozzles 12B-2, 12R-2, and 12G displaced by the pixel pitch (completely aligned in the X direction)
In the outward path, the dummy cell 5 in the preliminary ejection area 4A and the cell 3 in the column indicated by the dotted line in the effective pixel area 2 are used.
(Cells 3 in every other row in the X direction) to perform drawing, and on the return path, move the substrate 1 by the moving stage 11.
After moving by 5 pixel pitches, the preliminary ejection area 4B
The same operation and effect can be obtained by applying the present invention to a structure in which the remaining cells 3 indicated by two-dot chain lines in the dummy cell 5 and the effective pixel region 2 are ejected.

In the above embodiment, the case where the ink jet head 12 is relatively reciprocated has been described. Alternatively, the ink jet head 12 may be provided with two systems of head nozzles 12B, 12R, and 12G (head nozzles). Needless to say, the present invention can also be applied to a configuration in which ink is ejected only on the outward path while using a set in which the sets are shifted from each other by 1.5 pixel pitches in the Y direction. In this case, , The preliminary ejection area 4 is assigned to each effective pixel area 2
May be provided only on one side (a position before the head moving direction).

Further, as shown in FIG. 7, the cells 3 of the three colors in the color filter 7 are arranged in stripes, and the head nozzles 12B-3, 3B which are shifted from each other by one pixel in the Y direction. A similar effect can be obtained by applying the present invention to a configuration in which the cells 12 are sequentially discharged while using 12R-3 and 12G-3. In this case, 3
Since the color cells 3 are merely arranged in the X direction with the same arrangement, when ink is ejected in the forward path and the return path in the same manner as described above, both sides of each effective pixel area 2 (for the forward path and the return path). The pre-discharge area 4 may be provided in the pre-discharge area 4, but the pre-discharge area 4 may be discharged to all the cells 3 only on the outward path. In this case, as shown in FIG. Only one side of the pixel area 2 (only one preliminary ejection area 4 between the effective pixel areas 2) may be provided.

FIGS. 8 to 11 relate to another embodiment of the present invention. In this embodiment, in the black matrix forming step, the preliminary ejection region 4 is moved with respect to the Y direction (the nozzle arrangement direction). The black matrix 6 is formed so as to be divided into a plurality. As a result, the preliminary discharge area 4 is divided into a plurality of parts in the Y direction, and the dummy cells 5 are formed. 8 to 11, ink from one set of nozzle groups (one set of RGB nozzles) is stored in one dummy cell 5.
A black matrix 6 is formed at an intermediate position between the nozzle group discharge position and the adjacent nozzle group discharge position in the Y direction.

As described above, the preliminary discharge area 4 is divided into a plurality of parts by the black matrix 6 and the dummy cells 5 are divided.
In some cases, the height of the center of the ink 8 can be reduced as compared with the case where the preliminary ejection area 4 is not divided, as described below.

Assuming that the black matrix 6 has no liquid repellency or surface tension with respect to the ink 8, FIG.
As shown in (a) and (b), since the liquid level of the ink 8 in the dummy cell 5 is constant at any place, the black matrix 6 is divided so as to be divided in the nozzle arrangement direction of the preliminary ejection area 4. As shown in FIG. 12B, the liquid level of the ink 8 is increased only by the amount of the ink.

In the case where the black matrix 6 has a small liquid repellency to the ink 8, FIG.
As shown in (d), in the dummy cell 5, the liquid surface height decreases at a portion in contact with the black matrix 6, and the liquid surface height increases at the center. In this case, as shown in FIG. 12C, when the black matrix 6 is not formed so as to be divided in the pre-ejection area 4 in the nozzle arrangement direction, the center of the wide dummy cell 5 is entirely raised. Therefore, as shown in FIG. 12D, the black matrix 6 is formed so as to be divided in the nozzle arrangement direction of the preliminary ejection region 4, and the height of the swelling is smaller by the divided amount. The swell height will be slightly reduced. However, since the height of the swell is small and does not exceed the height of the black matrix 6, there is no problem in the subsequent laminating process.

However, when the black matrix 6 has high liquid repellency to the ink 8, the black matrix 6
The component having lyophobic property of elutes well onto the substrate 1 and the substrate 1
The surface also has strong liquid repellency. As shown in FIG. 12E, the influence of the liquid repellency increases as the surface of the substrate 1 also has a strong liquid repellency, and the black matrix is divided in the pre-discharge area 4 in the nozzle arrangement direction. When the black matrix 6 is not formed and has a certain large area, the center is greatly raised beyond the height of the black matrix 6 so that the entire volume in the preliminary ejection area 4 can be used effectively. Otherwise, a large step is generated, and good bonding cannot be performed in the subsequent bonding process, resulting in defective products.

On the other hand, as shown in FIG. 12F, even if the influence of the liquid repellency increases as the surface of the substrate 1 also has a strong liquid repellency, as shown in FIG. In the case where the black matrix 6 is formed so as to be divided in the nozzle arrangement direction of No. 4, since the width divided by the black matrix 6 is narrow, the rising inclination angle at the end of the ink 8 is the same. Also, the end of the ink 8 must contact the black matrix 6,
As described above, even if the volume reduction due to the black matrix 6 is anticipated, the space volume between the black matrices 6 can be used relatively effectively, and although the center rises in the divided dummy cells 5, the height of the rise is small. The height does not exceed the height of the black matrix 6 and, as a result, no trouble occurs in the subsequent laminating step.

As described above, by forming the dummy cells 5 by dividing the preliminary ejection area 4 into a plurality of parts by the black matrix 6, even if the black matrix 6 has high liquid repellency to the ink 8, The bonding process can be performed well. Note that, even when the substrate 1 has high liquid repellency to the ink 8, the same operation and effect can be obtained.

Further, as shown in FIG. 1, the cells 3 of three colors in the color filter 7 are arranged in a delta arrangement.
As shown in (1), when the ink 8 is ejected to different cells 3 (a group of biased cells 3) when the ink jet head 12 relatively moves the forward path and the backward path, the preliminary ejection area If the black matrix 6 that divides the inside of the area 4 is not provided, a non-predischarged place b is formed between the predischarged places a in the predischarge areas 4A and 4B for the forward path and the return path. 4 (see FIG. 4), the ink 8 spreads at this location b, and ink repelling occurs around the black matrix 6. In this case, the central portion of the preliminary ejection area 4 may rise beyond the height of the black matrix 6,
Thereafter, there is a possibility that a bonding defect may occur.

On the other hand, as described above, as shown in FIGS. 8 and 9, the nozzles are set so that ink from one set of nozzle groups (one set of RGB nozzles) is stored in one dummy cell 5. The black matrix 6 is formed at an intermediate position between the nozzle group discharge position and the adjacent nozzle group discharge position in the arrangement direction (Y direction), that is, the black matrix 6 that divides the preliminary discharge regions 4A and 4B.
Is provided at a position in the nozzle arrangement direction corresponding to the cell 3 that does not discharge, that is, at a position where the preliminary discharge is not performed.
The places a where the ink 8 is preliminarily ejected and the places c where the black matrix 6 is formed are arranged alternately (see FIG. 9), so that the ink 8 is diffused to the place where the preliminary ejection is not performed. Can be prevented, and repelling around the black matrix 6 can be prevented, which can also prevent a trouble in the subsequent laminating step.

In these embodiments, the case where the black matrix 6 is formed at all the intermediate positions between the nozzle group discharge positions and the adjacent nozzle group discharge positions has been described. However, the present invention is not limited to this. Even when the inside of the ejection region 4 is divided into two or four, the above-described effects can be obtained.

FIGS. 13 to 15 relate to another embodiment of the present invention. In this embodiment, an ejection state between the effective pixel area 2 and the preliminary ejection area 4 is checked. An ejection state inspection area 30 is provided. That is, in this embodiment, in the black matrix forming step, the dummy cells 31 having the same shape as the cells 3 in the effective pixel area 2 are formed by the black matrix 6 at the locations corresponding to the ejection state inspection areas 30. After the preliminary ejection operation is performed in the preliminary ejection region 4, the ink 8 is ejected from the ink jet head 12 to the dummy cells 31 in the ejection state inspection region 30 one by one, so that the ejection state can be inspected. I have.

As shown in FIG. 16, an inspection camera 32 for inspecting the discharge state is provided in the coloring device 10 of the color filter manufacturing apparatus. In this configuration,
After the ejection state is stabilized to some extent by preliminary ejection, ink is ejected drop by drop to the dummy cells 31 in the ejection state inspection area 30. Then, in the inspection step, by detecting the ejection coordinates, it is determined whether or not the ejection is bent and whether or not there is an unejected nozzle. Then, the discharge state at the start of drawing and the discharge state at the end of drawing are checked. If both of these discharge states are good, it is determined that the discharge state between them is also a stable good state. it can.

In this case, as the inspection cycle, it is also possible to perform an all-in-one inspection. However, since the number of inspection steps increases by performing the total inspection, and the production efficiency decreases, a fixed number of inspections may be performed. If it is determined that the inspection result is defective, a staff member is notified and an adjustment operation for recovery is performed, and then the drawing operation is immediately restarted.

Next, the ejection strength of the ink during the preliminary ejection in the above embodiment will be described below. When the ejection force of the ink jet head 12 to the preliminary ejection area 4 is equal to the ejection force to the effective pixel area 2, the ink droplets are ejected when the viscosity of the ink in the nozzles of the inkjet head 12 increases. It is not possible to apply a sufficient stress to cause this. Therefore, in such a case, the drawing operation must be temporarily stopped and the cleaning operation must be performed, resulting in increased wasteful time and reduced production efficiency.

To cope with this, in the present invention, the ink 8 is ejected by setting the ejection force of the ink jet head 12 to the preliminary ejection area 4 to be larger than the ejection force to the effective pixel area 2.

As the ink jet head 12, FIG.
As shown in FIG. 7, a piezo element 42 is provided between ink layers 41. In FIG. 17, 43 is a nozzle, 4
4 is an air layer, and 45 is an ink supply port. Then, by energizing the piezo element 42, the piezo element 42 is deformed, the capacity of the ink layer 41 is changed, and the ink 8 is ejected.

There are the following control methods for making the ejection force to the preliminary ejection area 4 larger than the ejection force to the effective pixel area 2 by the ink jet head 12.

First, as a first method, the stress generated in the piezo element 32 used in the ink jet head 12 varies depending on the magnitude of the driving voltage.
As shown in FIG. 8, the amplitude is increased by setting a higher drive voltage for discharging to the preliminary discharge area 4 than when drawing to the effective pixel area 2. As a result, a sufficient stress is generated to push out the ink 8 having the increased viscosity, and the ejection state is restored to a good state.

As a second method, as shown in FIG. 19, the driving force of the piezo element 42 is changed so that the discharging force to the preliminary discharging region 4 is larger than the discharging force to the effective pixel region 2. That is, as shown in FIG. 20, for example, at the time of drawing in the effective pixel area 2, as the driving frequency of the piezo element 42, for example, a frequency band of about 8 KHz where the ejection force is stable is used. Discharge force (discharge amount) increases, for example, 4 to 7 KHz or 9 to 12 KH
A drive frequency of z is used. As a result, although the ejection force becomes slightly unstable, the preliminary ejection can be performed with a large ejection force. Note that since only preliminary ejection is performed, there is no problem even if the ejection force becomes slightly unstable.

As a third method, as shown in FIG. 21, instead of the first and second methods, the drive pulse width of the piezo element 32 is set to a smaller value than when drawing in the effective pixel area 2. Control is performed such that the discharge time to the discharge area 4 is larger.

As described above, by setting the ejection force of the inkjet head 12 to the preliminary ejection region 4 to be greater than the ejection force to the effective pixel region 2 and ejecting the ink 8, the nozzles of the inkjet head 12 Thus, even when the viscosity of the ink 8 increases, a sufficient stress for discharging the ink 8 droplets can be applied.
Therefore, it is not necessary to temporarily stop the drawing operation to perform the cleaning operation, and it is possible to save unnecessary time and improve the production efficiency.
Further, even if the preliminary ejection area 4 has a relatively small area, the ink 8 thickened at the time of the preliminary ejection can be reliably ejected, and the transition to a favorable ejection state can be quickly performed.

The ink jet head 12 is not limited to the piezo type, but can be applied to a heat type ink jet head. In each of the above-described embodiments, the preliminary ejection region 4 is provided in correspondence with each of the effective pixel regions 2, whereby the preliminary ejection region 4 is provided between the effective pixel regions 2 in the X direction which is the head relative movement direction. Although the case where the preliminary ejection area 4 is always provided is described, the invention is not limited to this.

That is, as shown in FIGS.
The preliminary discharge area 4 is formed only in the vicinity of the end in the head relative movement direction of the multi-chamfered area of the substrate 1 so that the effective pixel area 2
You may comprise so that it may mutually approach. FIG. 22, FIG.
As shown in FIG. 3, when the ink-jet head 12 is relatively reciprocated, the preliminary discharge area 4A for the forward path is provided at one end of the substrate 1 and the preliminary discharge area 4B for the return path is provided at the other end of the substrate 1. Provide. Further, as shown in FIG. 24, when the inkjet head 12 is relatively moved only on the outward path, a preliminary discharge area 4A for the outward path is provided only on one end side of the substrate 1, and the preliminary discharge area 4A is provided on the other end side of the substrate 1. 4B is not provided.

According to this configuration, before the state of the nozzle surface of the ink jet head 12 changes, ink can be satisfactorily ejected to the next cell of the effective pixel area 2 while the preliminary ejection area 4 is formed between the effective pixel areas 2. The occupancy of the effective pixel region 2 on the substrate 1 can be improved by the amount not provided. As a result, the preliminary ejection region 4 can be made smaller in area, and the area efficiency can be further improved.

In this structure, as shown in FIGS. 8 to 11, the black matrix 6 is formed so as to divide the preliminary ejection area 4 into a plurality in the Y direction (the nozzle arrangement direction). The present invention is applied to the case where an ejection state inspection area 30 for confirming the ejection state is provided between the effective pixel area 2 and the preliminary ejection area 4 as shown in FIGS. Of course, it is also possible.

Further, in each of the above-described embodiments, the case where a plurality of color filters 7 are formed from one color filter substrate 20 has been described. However, the present invention is not limited to this. Needless to say, the above configuration and method can be applied to the case of a color filter substrate 20 configured to remove one color filter 7 from the substrate 20.

[0083]

As described above, according to the present invention, dummy discharge cells are formed in the preliminary discharge region so as to surround a larger area than the cells in the effective pixel region, and the preliminary discharge is performed on the dummy cells. It is possible to improve the area efficiency at which ink can be ejected in the area, and it is possible to increase the total ejection amount that can be ejected in the preliminary ejection area having a fixed area. Further, since the dummy cells are surrounded by the black matrix, the ink does not flow to the effective pixel area side. Also, when there is nothing surrounding the dummy cell and the ink has high liquid repellency to the substrate or the like,
Although the ink may rise to a high level, surrounding the dummy cell with a black matrix also has the effect of suppressing the rise. Furthermore, by forming the black matrix so that the preliminary ejection area is slightly wider than the ink ejection setting position from the inkjet head,
Since it is possible to prevent the ink from adhering on the black matrix, it is possible to prevent a defect in the bonding step due to the ink adhering onto the black matrix.

Further, by dividing the dummy cells in the preliminary ejection area into a plurality of parts by the black matrix in the nozzle arrangement direction of the ink jet head orthogonal to the head moving direction, the substrate and the black matrix have high liquid repellency to ink. Even in the case where the color filter substrate is provided, the height of the raised portion at the center of the ink can be reduced, so that it is possible to prevent the occurrence of a bonding failure due to the generation of a bound in the step of bonding the color filter substrate to the TFT array substrate, thereby improving the yield.

Further, by forming the preliminary discharge area for the forward path and the preliminary discharge area for the return path separately, the timing and position suitable for moving the forward path and moving the return path by the ink jet head are respectively suitable. Can perform the preliminary ejection operation, and the reliability is improved.

Further, by forming the black matrix at a position where the preliminary discharge is not performed in the preliminary discharge region for the forward path or the return path, it is possible to prevent the ink from being diffused to the portion where the preliminary discharge is not performed, and to prevent the ink from being spread around the black matrix. Can be prevented from being repelled, which can also be prevented from causing trouble in the subsequent laminating step.

Further, by providing an ejection state inspection area for confirming the ejection state between the effective pixel area and the preliminary ejection area, the most suitable state immediately before the preliminary ejection and ejection to the cells of the effective pixel area is performed. The ejection state can be inspected at the timing, which also improves the reliability.

Further, by setting the ejection force of the ink jet head to the preliminary ejection area to be larger than the ejection force to the effective pixel area and ejecting the ink, the viscosity of the ink in the nozzle of the ink jet head increases. In this case, it is possible to apply a sufficient stress for ejecting ink droplets, to save unnecessary time such as a cleaning operation, and to improve production efficiency.
Further, even if the preliminary ejection area has a relatively small area, a large amount of ink can be ejected at the time of preliminary ejection, and a transition to a favorable ejection state can be quickly performed.

Further, since the preliminary ejection area is formed only in the vicinity of the multi-chamfering area in the head relative movement direction and is not provided between the effective pixel areas of the color filter, the ink in the cells of each effective pixel area can be favorably provided. While the ejection can be performed, the occupancy of the effective pixel region on the substrate can be improved by the amount that the preliminary ejection region is not provided between the effective pixel regions.

[Brief description of the drawings]

FIGS. 1A and 1B are a schematic partial plan view and a main part plan view of a color filter substrate according to an embodiment of the present invention.

2A is a schematic plan view of a color filter substrate and an apparatus for manufacturing the same according to an embodiment of the present invention, and FIGS. 2B to 2E each illustrate a color filter manufacturing process (drawing process). It is a side view which shows schematically.

FIG. 3 is a schematic perspective view of the manufacturing apparatus.

FIG. 4 is a plan view showing the color filter substrate during drawing.

FIGS. 5A and 5B are a schematic partial plan view and a main part plan view of a color filter substrate according to another embodiment of the present invention.

FIG. 6 is a plan view showing the color filter substrate during drawing.

FIGS. 7A and 7B are a schematic partial plan view and a main part plan view of a color filter substrate according to another embodiment of the present invention.

FIG. 8 is a schematic plan view of a principal part of a color filter substrate according to another embodiment of the present invention.

FIG. 9 is a plan view showing the color filter substrate during drawing.

FIG. 10 is a schematic plan view of a main part of a color filter substrate according to another embodiment of the present invention.

FIG. 11 is a schematic plan view of a principal part of a color filter substrate according to another embodiment of the present invention.

FIGS. 12A to 12F are schematic cross-sectional views illustrating the operation of a color filter substrate according to another embodiment of the present invention.

FIGS. 13A and 13B are a schematic partial plan view and a main part plan view of a color filter substrate according to another embodiment of the present invention.

FIGS. 14A and 14B are a schematic partial plan view and a main part plan view of a color filter substrate according to another embodiment of the present invention.

FIGS. 15A and 15B are a schematic partial plan view and a main part plan view of a color filter substrate according to another embodiment of the present invention.

FIG. 16 is a schematic perspective view of an apparatus for manufacturing a color filter substrate according to another embodiment of the present invention.

FIGS. 17 (a) and (b) are a perspective view of an ink jet head of the manufacturing apparatus and a diagram for explaining the operation thereof.

FIGS. 18A and 18B are diagrams schematically showing states of drive signals of an ink jet head in a color filter substrate manufacturing apparatus according to an embodiment of the present invention.

FIGS. 19A and 19B are diagrams schematically showing states of driving signals of an ink jet head in the color filter substrate manufacturing apparatus according to the embodiment of the present invention. FIGS.

FIG. 20 is a diagram schematically showing a relationship between a driving frequency and an ejection amount of the inkjet head according to the embodiment of the present invention.

FIGS. 21A and 21B are diagrams schematically showing states of driving signals of an inkjet head in a color filter substrate manufacturing apparatus according to an embodiment of the present invention.

FIGS. 22A and 22B are a schematic partial plan view and a main part plan view of a color filter substrate according to another embodiment of the present invention.

FIGS. 23A and 23B are a schematic partial plan view and a main part plan view of a color filter substrate according to another embodiment of the present invention.

FIGS. 24A and 24B are a schematic partial plan view and a main part plan view of a color filter substrate according to another embodiment of the present invention.

FIGS. 25A and 25B are a schematic partial plan view and a main part plan view of a conventional color filter substrate.

FIG. 26 is a schematic plan view of a main part of a conventional color filter substrate.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Substrate 2 Effective pixel area 3, 3R, 3G, 3B cell 4 Preliminary discharge area 5 Dummy cell 6 Black matrix 7 Color filter 8, 8R, 8G, 8B Ink 10 Coloring device 11 Moving stage (moving means) 12, 12B, 12R, 12G inkjet head 20 color filter substrate 30 discharge state inspection area 31 dummy cell

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Eiji Okuda, Inventor Eiji Koshincho, Takamatsu-shi, Kagawa Prefecture One within Matsushita Hisashi Denshi Kogyo Co., Ltd. (72) Inventor Yutaka Kinoshita Eighth, Koshinmachi, Takamatsu-shi, Kagawa Prefecture Hisashi Matsushita (72) Inventor Hirofumi Sugimoto 8-1, Koshinmachi, Takamatsu City, Kagawa Prefecture Matsushita Hisashi Denka Kogyo Co., Ltd. F-term (reference) 2C056 EC24 EC54 FA10 FB01 2H048 BA11 BA64 BB02 BB42

Claims (26)

[Claims] 1. A drawing step in which an ink serving as a filter material is ejected by an inkjet head onto cells of an effective pixel area formed by a black matrix on a transparent substrate; A preliminary ejection step of ejecting ink from an inkjet head in advance to dummy cells in a preliminary ejection region arranged at a position before the relative movement direction, wherein the preliminary ejection region is located at a position closer to the dummy pixel in the effective pixel region. A dummy cell formed by surrounding a large area with a black matrix, and performing preliminary discharge in the dummy cell. 2. A black matrix is formed so as to divide a preliminary ejection area into a plurality of nozzles in an ink jet head which is orthogonal to a direction of relative movement of the head. 2. The method according to claim 1, wherein dummy cells are formed, and preliminary discharge is performed on the dummy cells. 3. The cells of RGB filter colors in the color filter are arranged in a delta, and the ink-jet head is reciprocated relative to the substrate, so that when the ink-jet head relatively moves on the outward path and on the return path, it moves relative to each other. A method for manufacturing a color filter in which ink is ejected to different cells to form a filter element, wherein a preliminary discharge area for a forward path and a preliminary discharge area for a return path are provided, and the forward path is relatively moved by an inkjet head. 3. A preliminary discharge to dummy cells in a preliminary discharge area for a forward path, and preliminary discharge to dummy cells in a preliminary discharge area for a return path when the ink jet head relatively moves the return path. Method for manufacturing a color filter. 4. A dummy matrix divided in a nozzle arrangement direction by forming a black matrix at a position in a nozzle arrangement direction corresponding to a cell which is not ejected by an ink jet head during a forward movement relative movement in a forward ejection preliminary ejection area. By forming a black matrix at a position in the nozzle arrangement direction corresponding to a cell which is not ejected by the inkjet head during the relative movement of the return path in the preliminary ejection area for the return path, a dummy cell divided in the nozzle arrangement direction is formed. 4. The method according to claim 3, wherein preliminary discharge is performed on each of the dummy cells. 5. The ink jet head according to claim 1, wherein the ink is ejected to an ejection state inspection area provided between the effective pixel area and the preliminary ejection area, and the ejection state is inspected. A method for producing a color filter according to any one of the above. 6. An effective pixel area formed by a black matrix on a transparent substrate, comprising: an inkjet head for discharging ink serving as a filter material onto the substrate; and a moving unit for relatively moving the inkjet head relative to the substrate. Manufacturing of a color filter that discharges ink from an ink jet head in advance to dummy cells in a preliminary discharge area that is disposed at a position closer to the head relative movement direction than an effective pixel area before the ink serving as a filter material is discharged to the cells of the ink jet head. An apparatus, wherein a control unit is provided for forming a dummy cell by surrounding a larger area of a cell of an effective pixel region in the preliminary discharge region with a black matrix, and performing a preliminary discharge into the dummy cell by an inkjet head. The manufacture of a color filter characterized by that Manufacturing equipment. 7. A black matrix is formed so as to divide a preliminary ejection region into a plurality of nozzles arranged in a direction perpendicular to the direction of relative movement of the ink jet head. 7. The apparatus for manufacturing a color filter according to claim 6, wherein a plurality of divided dummy cells are formed. 8. An RGB filter color cell in a color filter is arranged in a delta, and an ink jet head is reciprocated relative to a substrate, and when an ink jet head makes a relative movement on a forward path and a relative movement on a return path, it moves relative to each other. An apparatus for manufacturing a color filter for forming a filter element by discharging ink to different cells, wherein a preliminary discharge area for a forward path and a preliminary discharge area for a return path are formed by a black matrix. 8. The apparatus for manufacturing a color filter according to 6 or 7. 9. A position in a nozzle arrangement direction corresponding to a cell which is not ejected by the ink jet head during the relative movement of the forward path in the preliminary discharge area for the forward path, and is not ejected by the ink jet head during the relative movement of the backward path in the preliminary discharge area for the backward path. 9. The color filter manufacturing apparatus according to claim 8, wherein a black matrix is formed at a position in the nozzle arrangement direction corresponding to the cell. 10. The apparatus according to claim 6, further comprising an inspection unit configured to inspect an ink ejection state ejected in an ejection state inspection area provided between the effective pixel area and the preliminary ejection area. An apparatus for manufacturing a color filter according to any one of the above. 11. A color filter substrate in which a filter element is formed by ejecting ink serving as a filter material to a substrate on which a black matrix is formed by an ink jet head, wherein an effective pixel region functioning as a color filter is provided. And a preliminary ejection area that does not function as a color filter while being ejected is provided,
A color filter substrate, wherein dummy cells provided in a preliminary ejection region and ejected with ink are formed so as to be surrounded by a black matrix with a larger area than cells in an effective pixel region. 12. A preliminary discharge area is formed by a black matrix so as to be divided into a plurality of portions in a nozzle arrangement direction of an ink jet head orthogonal to a head relative movement direction. 12. The color filter substrate according to claim 11, wherein a dummy cell is formed. 13. A color filter in which cells of RGB filter colors are arranged in a delta, and an ink-jet head is reciprocated relative to a substrate, so that the ink-jet head relatively moves in a forward path and a backward path. A color filter substrate in which filter elements are formed by discharging ink to different cells, wherein a black matrix surrounds and forms a preliminary discharge area for the forward path and a preliminary discharge area for the return path. The color filter substrate according to claim 11, wherein the color filter substrate is a color filter substrate. 14. A dummy matrix divided in the nozzle arrangement direction by forming a black matrix at a position in the nozzle arrangement direction corresponding to a cell which is not ejected by the ink jet head during the relative movement in the outward movement in the preliminary ejection area for the outward movement. Dummy cells divided in the nozzle arrangement direction are formed by forming a black matrix at a position in the nozzle arrangement direction corresponding to a cell that is not ejected by the inkjet head during the backward movement relative movement in the formed preliminary ejection area for the backward movement. 14. The color filter substrate according to claim 13, wherein: 15. The color according to claim 11, wherein an ejection state inspection area for confirming an ejection state is provided between the effective pixel area and the preliminary ejection area. Filter substrate. 16. Before discharging ink serving as a filter material to cells in an effective pixel area by an ink jet head,
A method of manufacturing a color filter comprising a step of previously discharging ink from an inkjet head to a dummy cell in a preliminary discharge area disposed at a position before the effective pixel region in a head relative movement direction, the method including: Wherein the discharge force is set to be larger than the discharge force to the effective pixel area to discharge ink. 17. When an ink is ejected to a preliminary ejection area by an inkjet head, the ejection frequency of the inkjet head is made different from the ejection frequency of the inkjet head to an effective pixel area, thereby ejecting the ink to the preliminary ejection area. 17. The method for manufacturing a color filter according to claim 16, wherein the force is set to be larger than the discharge force to the effective pixel area. 18. When the ink is ejected to the preliminary ejection area by the ink jet head, the amplitude of the control signal of the ejection actuator in the ink jet head is made larger than the amplitude at the time of ejection to the effective pixel area, whereby the preliminary ejection by the ink jet head is performed. 17. The method for manufacturing a color filter according to claim 16, wherein the discharge force to the region is made larger than the discharge force to the effective pixel region. 19. When an ink-jet head discharges ink to a preliminary discharge area, the pulse width of a control signal of a discharge actuator in the ink-jet head is set to be larger than the pulse width at the time of discharging to an effective pixel area. 17. The method for manufacturing a color filter according to claim 16, wherein the discharge force to the preliminary discharge region is made larger than the discharge force to the effective pixel region. 20. An ink jet head that discharges ink serving as a filter material to a substrate, and moving means for moving the ink jet head relative to the substrate,
Before the inkjet head ejects the ink serving as the filter material to the cells of the effective pixel region, the ink is previously ejected from the inkjet head to dummy cells in the preliminary ejection region arranged at a position before the effective pixel region in the head relative movement direction. An apparatus for manufacturing a color filter,
An apparatus for manufacturing a color filter, further comprising control means for controlling an ejection force of an inkjet head to a preliminary ejection region to be greater than an ejection force to an effective pixel region. 21. A control unit, wherein, when ink is ejected from the inkjet head to a preliminary ejection area, the ejection frequency of the inkjet head is made different from the ejection frequency of the inkjet head to an effective pixel area.
21. The color filter manufacturing apparatus according to claim 20, wherein an ejection force of the inkjet head to the preliminary ejection area is controlled to be larger than an ejection force to the effective pixel area. 22. A control unit, wherein, when ink is ejected to a preliminary ejection area by an inkjet head, the amplitude of a control signal of an ejection actuator in the inkjet head is made larger than the amplitude at the time of ejection to an effective pixel area. 21. The color filter manufacturing apparatus according to claim 20, wherein an ejection force of the inkjet head to the preliminary ejection area is controlled to be larger than an ejection force to the effective pixel area. 23. A control unit, wherein, when ink is ejected to a preliminary ejection area by an inkjet head, a pulse width of a control signal of an ejection actuator in the inkjet head is larger than a pulse width at the time of ejection to an effective pixel area. 21. The color filter manufacturing apparatus according to claim 20, wherein the control unit controls the ejection force of the inkjet head to the preliminary ejection region to be larger than the ejection force to the effective pixel region. 24. A filter element is formed by ejecting an ink serving as a filter material to a substrate on which a black matrix is formed by an ink jet head, and effective pixel regions corresponding to the color filters are arranged vertically and horizontally to form a color filter. A color filter substrate to be multi-faced, wherein the preliminary discharge area is formed only at a position near an end of the multi-faced area in the head relative movement direction, and is not provided between the effective pixel areas of the color filter. The color filter substrate according to any one of claims 11 to 15, wherein 25. A filter element is formed by ejecting ink serving as a filter material to a substrate on which a black matrix is formed by an inkjet head, and effective pixel regions corresponding to color filters are arranged vertically and horizontally on the substrate. A method of manufacturing a color filter in which a color filter is multi-faced, wherein the color filter is formed only in a portion near an end in a head relative movement direction of a multi-shape area, and in a preliminary ejection area not provided between effective pixel areas of the color filter. And pre-discharging ink.
20. The method for manufacturing a color filter according to any one of 6 to 19. 26. A filter element is formed by ejecting ink serving as a filter material to a substrate on which a black matrix is formed by an ink jet head, and effective pixel regions corresponding to color filters are arranged vertically and horizontally on the substrate. An apparatus for manufacturing a color filter in which a plurality of color filters are formed, and a preliminary discharge area which is formed only at a position near an end portion in a head relative movement direction of a multi-plane area and is not provided between effective pixel areas of the color filter. 24. The apparatus for manufacturing a color filter according to claim 6, further comprising a black matrix forming unit that is surrounded by a black matrix.