WO2007132727A1

WO2007132727A1 - Method and apparatus for manufacturing color filter

Info

Publication number: WO2007132727A1
Application number: PCT/JP2007/059653
Authority: WO
Inventors: Shigeru Higashino; Toshio Yasuda; Shinya Izumida; Junichi Uehara; Takashi Iwade
Original assignee: Toray Engineering Co., Ltd.
Priority date: 2006-05-15
Filing date: 2007-05-10
Publication date: 2007-11-22
Also published as: CN101449186A; KR101214352B1; TWI398358B; JP5243954B2; JPWO2007132727A1; TW200906628A; KR20090021277A; CN101449186B

Abstract

[PROBLEMS] To apply a color material discharged from an ink jet nozzle on the center portion of a pixel region, irrespective of the screen sizes and size increase of a glass substrate. [MEANS FOR SOLVING PROBLEMS] A direction parallel to the longitudinal direction of an ink jet head bar (5) is set in the longitudinal direction of a pixel, and a relative moving direction of the inkjet head bar (5) is set in a direction orthogonally intersecting with the longitudinal direction of the pixel.

Description

Specification

Color filter manufacturing method and apparatus

Technical field

The present invention relates to a method and an apparatus for manufacturing a color filter on a glass substrate using an ink jet nozzle.

Background art

Conventionally, a method for producing a color filter on a glass substrate using an ink jet nozzle has been proposed (see Patent Document 1).

[0003] Specifically, at least a transparent colorant-receiving layer is provided on a transparent substrate, and regions that should be between pixels of different colors are made non-colored regions having color repellent properties and should have the same color. In a place where pixels are adjacent to each other, the color filter is manufactured by coloring the plurality of pixel portions that should have the same color, including the inter-pixel region, by adding a coloring material without any breaks.

[0004] In addition, a method of drawing the whole screen by linearly scanning in parallel is adopted, and the pixel arrangement is designed so that the pixel portions to be colored in the same color are aligned in the same direction as the main runner direction. Thus, full-surface drawing is achieved by linear main scanning along the pixel column.

In addition, in order to manufacture a color filter on a glass substrate using an inkjet nozzle, an inkjet head is driven in a first direction by a first moving mechanism, and a color filter substrate is placed by a second moving mechanism. In addition, the mounting table is moved in a second direction different from the first direction, and the first moving mechanism is moved along the column of nozzle force S filter elements so that the ink droplets discharged from the nozzles are discharged. There has been proposed a method for controlling the ejection cycle and the first moving mechanism and the second moving mechanism with the ejection cycle and the moving speed of the inkjet head that overlap in the filter element (see Patent Document 2).

Patent Document 1: JP-A-9 68611

Patent Document 2: Japanese Patent Laid-Open No. 10-260307

Disclosure of the invention

Problems to be solved by the invention [0006] When the method of Patent Document 1 is adopted and each of the different screen sizes is dealt with, since the pitch is different for each screen size, the probability that the inkjet nozzle and the center of the pixel coincide with each other As a result, there is a problem that the number of scans by the ink jet head increases, and the time required for coating as a whole becomes long.

[0007] In order to solve such a problem, there is a problem that it takes a lot of time to change the force that can be considered to change the pitch of the ink jet nozzle by rotating the inkjet head.

[0008] In addition, as a recent trend, there is an increase in the size of the color filter and an increase in the size of the glass substrate on which the color filter is formed. If the pixel arrangement is designed so that the pixel parts to be colored in the same color are aligned in the same direction as the main running direction, the whole screen is drawn in parallel by main scanning. It is difficult to position the color material discharged from the ink jet nozzle so that it is applied to the center of the pixel area over the entire main scanning range. There is also a problem that the color material is not applied, and as a result, there is a high possibility of producing a defective product.

[0009] When the method of Patent Document 2 is adopted, in order to deal with each of different screen sizes, since the pitch is different for each screen size, there is a probability that the inkjet nozzle and the central portion of the pixel match. As a result, the number of scans by the ink jet head increases, resulting in a problem that the time required for coating as a whole becomes longer.

In addition, as shown in FIG. 4 of Patent Document 2, the entire screen is drawn by performing main scanning in a straight line in parallel so that the pixel portions to be colored in the same color are arranged in the same direction as the main scanning direction. Since the pixel arrangement is designed in this way, when the color filter and the glass substrate are enlarged, the color material discharged from the inkjet nozzle is applied to the center of the pixel area over the entire main scanning range. It is difficult to position, and in fact, the desired color material is not applied to some pixel areas, resulting in a high possibility of producing defective products. There is.

[0011] Further, since both moving mechanisms require high accuracy, the cost increases as a whole. [0012] The present invention has been made in view of the above-described problems, and a color material discharged from an inkjet nozzle is disposed at the center of a pixel region regardless of the size of a glass substrate regardless of the screen size. It is an object of the present invention to provide a color filter manufacturing method and apparatus capable of being applied to the surface.

Means for solving the problem

[0013] In the color filter manufacturing method according to claim 1, the ink jet head bar in which a plurality of ink jet heads each having a plurality of ink jet nozzles are arranged and the glass substrate on which the black matrix is formed are relatively moved. In the color filter manufacturing method in which a color material is applied to the pixels of the black matrix by the inkjet nozzle, a direction parallel to the longitudinal direction of the inkjet head bar is set to the longitudinal direction of the pixels, and the color material for each inkjet nozzle In this method, ejection / non-ejection is set in advance, and ejection of the color material of the inkjet nozzle is controlled based on the relative position information of the glass substrate with respect to the ink jet nozzle and the setting information.

[0014] In the color filter manufacturing method of claim 2, the ink-jet head bar in which a plurality of ink-jet heads each having a plurality of ink-jet nozzles are arranged and the glass substrate on which the black matrix is formed are relatively moved. In the color filter manufacturing method in which a color material is applied to the pixels of the black matrix with the inkjet nozzles, the direction parallel to the longitudinal direction of the inkjet head bar is set as the arrangement direction of pixels of the same color, and the color for each inkjet nozzle is set. Material discharge Z is a method in which non-discharge Z is set in advance, and discharge of the color material of the ink jet nozzle is controlled based on the relative position information of the glass substrate with respect to the ink jet nozzle and the setting information.

The color filter manufacturing method according to claim 3 is a method in which the discharge / non-discharge setting is performed based on coordinates in the relative movement direction of the glass substrate.

[0016] In the color filter manufacturing method according to claim 4, the number N of inkjet nozzles facing one pixel is N.

The number of excess nozzles n, the amount Q per droplet of ink jet nozzle, Q, the number of ejections M within the pixel in the relative movement direction, and the amount V of color material applied to each pixel V It is the method which has.

[0017] [Equation 1] V≤M-(N-n)-Q (where n is an integer greater than 1)

The color filter manufacturing method according to claim 5 is a method in which the setting of ejection / non-ejection is performed based on coordinates in a longitudinal direction of the pixel of the glass substrate.

[0019] The color filter manufacturing method according to claim 6 is a method of moving the ink jet head bar (5) in the longitudinal direction every time the relative movement is finished, and the amount of movement in the longitudinal direction is the longitudinal direction. This is a value obtained by adding the amount of movement in which the color material application areas before and after the movement of each other do not overlap each other and the longitudinal pitch of the pixels.

[0020] The color filter manufacturing method according to claim 7 is a method of changing the discharge / non-discharge setting of the color material for each ink jet nozzle (52) for each relative movement.

[0021] The color filter manufacturing apparatus according to claim 8 is a glass substrate having a support member for supporting an ink jet head bar in which a plurality of ink jet heads each having a plurality of ink jet nozzles are arranged, and a black matrix formed on the surface. A suction table for sucking and holding, a first moving means for relatively moving the ink jet head bar and the glass substrate while maintaining a predetermined gap, and the inkjet head bar and the glass substrate. In a color filter manufacturing apparatus comprising: a second moving means for moving in a direction perpendicular to the moving direction by the moving means; and a first storage means for storing the dimension data by inputting the dimensions of the glass substrate and the ink jet nozzle.

The apparatus includes a detection unit that detects a relative position between the glass substrate and the inkjet bar, and a discharge control unit that controls the discharge of the color material for each inkjet nozzle based on the detected relative position.

[0022] In the color filter manufacturing apparatus according to claim 9, the coating region of the inkjet head bar in the direction orthogonal to the moving direction by the first moving means is orthogonal to the moving direction of the glass substrate by the first moving means. It is set larger than the coating area in the direction.

[0023] The color filter manufacturing apparatus according to claim 10, wherein the glass substrate pixel in the relative movement direction and the positional information of the inkjet nozzle are input, and the movement direction of the glass substrate and the inkjet head bar by the first moving means. The first calculation means for calculating / judging the discharge / non-discharge of the color material of each inkjet nozzle for each relative position in the first calculation means It further includes second storage means for storing the calculation / judgment result.

[0024] The color filter manufacturing apparatus according to claim 11 is orthogonal to the movement direction of each inkjet nozzle by the first moving means, based on the input glass substrate pixel and the inkjet nozzle position information in the relative movement direction. The image processing apparatus further includes second calculation means for calculating / determining discharge / non-discharge of the color material in the direction and third storage means for storing a calculation / determination result by the second calculation means.

The invention's effect

[0025] In the color filter manufacturing method according to claim 1, the color material discharged from the ink jet nozzle can be applied to a portion to be applied in a predetermined pixel region. In other words, it is possible to prevent the color material from being applied to the pixel to which other color material is to be applied and the black matrix around the pixel.

[0026] In the color filter manufacturing method according to claim 2, the color material discharged from the ink jet nozzle can be applied to a place where a predetermined pixel region is to be applied. In other words, it is possible to prevent the color material from being applied to the pixel to which other color material is to be applied and the black matrix around the pixel.

[0027] In the color filter manufacturing method according to claim 3, the color material discharged from the ink jet nozzle is substantially the center of the pixel width in the application direction of the predetermined pixel region in the relative movement direction of the ink jet head bar and the glass substrate. Can be applied.

[0028] According to the color filter manufacturing method of claim 4, the ink jet nozzles to be ejected can be selected and combined, and the coating unevenness can be dispersed.

[0029] In the color filter manufacturing method according to claim 5, the color material discharged from the inkjet nozzle is applied to a predetermined position in a direction orthogonal to the relative movement between the inkjet head bar and the glass substrate in the pixel region. be able to. In other words, it is possible to prevent the color material from being applied to the boundary between adjacent pixel regions of the same color, that is, the black matrix.

[0030] The color filter manufacturing method according to claim 6 can achieve uniform application of the color material in the pixel region by changing the application position of the color material by the inkjet nozzle over the pixel region. Yes, and by changing the combination of the pixel area and the nose hole, Color unevenness due to variations in ejection from the nozzle holes can be suppressed.

[0031] In the color filter manufacturing method according to claim 7, the relative position between the ink jet head bar and the glass substrate is changed for each relative movement, and the color material is applied to a desired position in the pixel region. it can.

[0032] The color filter manufacturing apparatus according to claim 8 can apply the color material discharged from the ink jet nozzle to the central portion of the pixel region regardless of the size of the glass substrate regardless of the screen size.

[0033] The color filter manufacturing apparatus according to claim 9 applies the color material to all the pixel regions even when the inkjet head bar is moved in a direction orthogonal to the relative movement with the glass substrate. Can do.

[0034] The color filter manufacturing apparatus according to claim 10 can apply the color material only to a predetermined pixel region in the application direction regardless of the size of the glass substrate regardless of the size of the glass substrate.

[0035] The color filter manufacturing apparatus according to claim 11 avoids a predetermined non-application area in a direction orthogonal to the application direction, regardless of the size of the glass substrate, regardless of the screen size, and only the predetermined pixel area. A color material can be applied to the surface.

BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, embodiments of a color filter manufacturing method and apparatus according to the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a perspective view showing an embodiment of a color filter manufacturing apparatus of the present invention.

[0038] This color filter manufacturing apparatus supports a suction table 3, a coating gantry 4, a camera gantry 6 and the like on a machine base 1.

[0039] The suction table 3 holds the glass substrate 2 by suction. In order to achieve the positioning of the glass substrate 2, the suction table 3 is rotationally driven in the Θ direction by a drive mechanism and a guide mechanism (not shown). Driven in the Y direction.

[0040] The application gantry 4 holds the inkjet head bar 5, and is driven in the X direction by a drive mechanism and a guide mechanism (not shown) in order to apply a color material to the glass substrate 2. In addition, in order to adjust the relative position with respect to the glass substrate 2, The head bar 5 is driven in the Z direction and the Y direction by a drive mechanism and a guide mechanism (not shown).

[0041] The camera gantry 6 holds an alignment camera 7, 8 for alignment of the glass substrate 2 and a scan camera 9 for detecting the impact mark of the color material in the pixel region of the glass substrate 2. For alignment and pixel detection, it is driven in the X direction by a drive mechanism and guide mechanism (not shown). Further, the alignment cameras 7 and 8 and the scan camera 9 are driven in the Y direction by a drive mechanism and a guide mechanism (not shown).

[0042] The alignment cameras 7 and 8 detect marks (not shown) on the glass substrate 2, rotate the suction table 3 based on the mark detection results by the alignment cameras 7 and 8, and the Z or Y direction. It is possible to achieve the alignment S of the glass substrate 2 by moving it to the position S.

[0043] X and Y represent directions orthogonal to each other set to define a plane parallel to the upper surface of the glass substrate 2 held by suction by the suction table 3, and Z is defined by X and Y. This represents the direction perpendicular to the flat surface.

FIG. 2 is a schematic view showing the configuration of the inkjet head bar 5.

The inkjet head bar 5 is formed by aligning a plurality of inkjet heads 51, and each inkjet head 51 is formed by aligning a plurality of inkjet nozzles 52. The alignment of the plurality of inkjet heads 51 is set such that the intervals in the X direction and the Y direction of all the ink jet nozzles 52 are predetermined intervals.

[0046] Since the inkjet nozzles 52 are arranged in an oblique direction with a predetermined number as a unit, the inkjet nozzles 52 are sequentially operated while the coating gantry 4 is driven in the X direction, whereby the inkjet nozzle 52 is moved in the Y direction. Color material can be applied in a linear alignment.

[0047] The inkjet head bar 5 shown in FIG. 2 is for applying one of red (R), green (G), and blue (B) color materials, and is not particularly shown. Inkjet head bars are also provided for applying other color materials.

[0048] However, the inkjet head bar 5 for red (R), green (G), and blue (B) color materials May be lined up. Of course, only an inkjet head bar that discharges one color material is provided.

FIG. 8 is a view showing an example of the arrangement of the inkjet nozzles 52.

[0050] Fig. 8 shows an ink jet nodule determined by the nozzle lj and the nozzle number, where P is the ink jet nozzle pitch in the Y direction, and L1 to L5 are the ink jet nose row application direction intervals.

[0051] Next, the operation of the color filter manufacturing apparatus having the above configuration will be described.

FIG. 6 is a flowchart for explaining the color filter manufacturing process.

[0053] After the glass substrate 2 is loaded onto the suction table 3 by a loading robot (not shown) in step SP1, the rough positioning of the glass substrate 2 is achieved by the outer shape regulating means (not shown) in step SP2. To do. In step SP3, the glass substrate 2 is sucked by the suction table 3, and then the camera gantry 6 is moved forward in step SP4. In step SP5, the alignment mark of the glass substrate 2 is detected by the alignment cameras 7 and 8. Alignment of the glass substrate 2 is achieved by positioning in the Y direction and Θ direction, and the camera gantry 6 is moved back in step SP6.

[0054] Next, in step SP7, the application gantry 4 is moved forward / backward, and the X coordinate value is output. In step SP8, it is determined whether or not the application has been performed to the end based on the X coordinate value. To do.

[0055] Separately from this process, in step SP16, the position information (coordinate values) of the holes of the ink jet nozzle 52 is input, and in step SP17, the position information (coordinate values) of all the pixels on the glass substrate 2 is input. In step SP18, input other parameters (for example, offset values determined in consideration of the discharge speed of the color material, relative movement speed, control system delay, etc.). In step SP19, the data table is calculated, and in step SP20, the calculation result is stored in the discharge data table.

FIG. 7 is a diagram showing an example of a discharge data table, in which the number of application strokes, application direction pixel numbers, application direction pixel positions, nozzle rows, application gantry X coordinate values, and discharge patterns for all nozzles are set. Has been. X0 is the initial movement amount, Pg is the pixel pitch in the Y direction, and L :! To Ln are intervals in the nose row application direction, and m is a pixel number in the application direction. The initial movement amount X 0 and the pixel pitch Pg are shown in FIG. Figure 3 shows a state where only the red (R) color material is applied, and the distance to the first pixel in the X direction is the initial movement amount X0, and the red (R) color in the X direction. The interval between the pixels to which the material is applied is the pixel pitch Pg.

[0057] If it is determined in step SP8 that the application has not been performed to the end, in step SP13, the X coordinate output value of the application gantry 4 is compared with the discharge data table, and step SP14 In step S15, it is determined whether or not the X coordinate value matches the ejection data. If they match, in step SP15, the ink jet nozzle 52 is operated to eject ink.

FIG. 5 is a schematic diagram for explaining the above processing.

[0059] By operating the inkjet nozzle 52 whose X-coordinate value matches the pixel area to be applied for ejection and not operating the other inkjet nozzles 52, the pixel area to be applied can be reduced. Apply ink. Specifically, the color material is applied while moving the inkjet nozzle 52 relative to the glass substrate 2, so the discharge speed of the color material, relative movement speed, control system delay, etc. are taken into consideration. The inkjet nozzle 52 for discharging is controlled in consideration of the offset value determined in this way.

FIG. 4 is a schematic diagram illustrating control of the inkjet nozzle 52 in the Y direction. This process is not shown in the flowchart, but is shown in FIG. At least a part of force is applied to the Y coordinate range that represents the width of the black matrix extending in the X direction on the glass substrate 2.The inkjet nozzle 52 that does not operate is not operated, and the entire Y coordinate range of the pixel area to be coated is Ink is applied to the pixel area to be applied by operating the ink jet nozzle 52 to enter for ejection.

If it is determined in step SP 14 that the X coordinate value and the discharge data do not match, or if the process of step SP15 is performed, the process of step SP7 is performed again.

[0062] If it is determined in step SP8 that the application has been performed to the end, it is determined in step SP9 whether or not a predetermined number of times of application has been performed.

[0063] If it is determined in step SP9 that the number of coatings has not reached the predetermined number, In step 12, the inkjet head bar 5 is moved in the Y direction, and the process of step SP7 is performed again. Note that the movement distance in the よい direction may be a distance determined by the number of droplets of color material applied to one pixel region, for example, but the pixel pitch in the Υ direction is relative to this distance. It may be a distance obtained by adding an integer multiple. In the latter case, since the ink jet nozzles eject ink to different pixels, even if there is a variation in the size of the landing marks for each inkjet nozzle, it can be averaged as a whole. Here, if the application area of the ink jet head bar 5 is set to be larger than the application area of the glass substrate 2, even if the inkjet head bar 5 is moved as in the latter case, all the pixels are aligned without any problem. Material can be applied.

[0064] If it is determined in step SP9 that the coating has been performed a predetermined number of times, the coating process is terminated in step SP10, and in step SP11, the glass substrate 2 is unloaded by an unillustrated unloading outlet bot or the like. Then, the series of processing ends.

[0065] In summary,

After the glass substrate 2 is carried into the suction table 3, the camera gantry 6 is moved forward to detect the mark on the glass substrate 2, and the suction table 3 is operated in accordance with the detection result. Achieve alignment of 2. Then move camera gantry 6 back.

[0066] Next, the coating gantry 4 is moved forward to perform the first outbound coating.

[0067] After that, the coating gantry 4 is moved backward in a slightly moving direction to perform the first return coating, and during this time, the camera gantry 6 is moved forward to scan the camera.

9. Check the landing mark of the color material in the pixel area of the glass substrate 2 by 9 and then move the force mergantry 6 backward.

[0068] Thereafter, the second outward coating is performed by moving the coating gantry 4 in a state of being slightly moved in the heel direction.

[0069] Thereafter, the second return coating is performed by moving the coating gantry 4 backward in a state of being slightly moved in the heel direction.

Thereafter, the suction holding of the glass substrate 2 is stopped, and the glass substrate 2 is unloaded from the suction table 3. Thereafter, the above-described series of processing is repeatedly performed to manufacture a desired number of color filters. Ability to do S.

That is, when the color material is applied once, the color material adheres at an interval equal to the interval between the ink jet nozzles 52, so that the color material is not continuously applied.

However, in the case where the above-described series of processing is performed, since the coating is performed by slightly changing the position in the Y direction, finally, as shown in FIG. 3, on the glass substrate 2 The color S can be applied continuously in the corresponding pixel region 22 of the formed black matrix 21.

[0073] As can be seen from the above description, the operation timing of the inkjet nozzle 52 may be controlled while the inkjet head bar 5 is relatively moved, so that the black matrix 21 formed on the glass substrate 2 can be controlled. A color material can be reliably applied in the corresponding pixel region 22.

[0074] For example, the pitch of inkjet nozzle 52 is 80 μm, the pixel size is 70 to: 100 μm X 200 to 300 μm, the width of the black matrix is 30 μm, and the inkjet nozzle When applying a color material at a pitch of 300 μm {(70 μm + 30 zm) X 3} when the discharge cycle of 52 is 10 kHz or higher, the relative scanning speed should be 210 mm / s. All ink-jet nozzles 52 can be driven at 10 kHz to apply color material. Also, if the pixel size changes, it can be easily dealt with by adjusting the scan speed.

Furthermore, the pixel size in the direction orthogonal to the relative movement direction of the inkjet head bar 5 is 200 to 300 μm, ensuring a sufficiently large margin for the droplets of color material ejected from the inkjet nozzle 52. can do. In addition, the pixel size in the relative movement direction of the inkjet head bar 5 is 70 to 100 μm, and the inkjet nozzle 52 operates with a force that reduces the margin for the color material droplets ejected from the ink jet nozzle 52. The timing to be controlled is accurately controlled. As a result, the color material can be reliably applied in the corresponding pixel region 22 of the black matrix 21 formed on the glass substrate 2.

[0075] In the above, the application gantry 4 is moved in the X direction with respect to the suction table 2. However, the application gantry 4 can be fixed and the suction table 3 can be moved.

[0076] It is preferable to set one side of the suction table 3 to be larger than the longer side of the glass substrate 2. Regardless of the state in which the glass substrate 2 is loaded, the glass substrate 2 is securely attached to the suction table 3. Can be made.

[0077] In the above embodiment, the number N of inkjet nozzles 52 facing one pixel, the number n of surplus nozzles, the amount Q per droplet of the inkjet nozzle 52, and the inside of the pixel in the relative movement direction It is preferable that the number M of ejections and the amount V of color material applied to one pixel have the relationship of number 1.

[0078] Further description will be made.

FIG. 9 schematically shows the relationship between the pixel region and the droplet.

[0080] In the figure, the inner dimensions of the pixel are represented by _a and b, the application area within the pixel is represented by c and d, and the number of droplets in the relative movement direction (number of droplets in the relative movement direction) is represented by M. The number of ink jet nozzles 52 facing one pixel (the number of opposing nozzles or the number of opposing nozzle droplets) is represented by N. Further, the total number of inkjet nozzles 52 corresponding to one pixel is a number one or more larger than the number N, and the difference between the total number and the number N is the number of surplus nozzles n. Therefore, the number i of the combination of inkjet nozzles 52 for applying a color material to one pixel is i = C.

N N-n

[0081] Then, by changing the combination of the ink jet nozzles 52 used to apply the color material to the pixels (the discharge state is selected), the application unevenness in the application direction can be dispersed, The coating unevenness can be conspicuous.

Example

Nozunore width force 25400 μ πι, Nozunore angle 军 image power S l440dpi, Nozunore pitch P force 25400/1 440 = 17.6 xm, pixel size force a = 300 μm, b = 100 ₁ m, coating area size force S _C = 220 zm, ά = 20 μ ηι Opposite nose, Nore number force N = c / P = 220 / l 7. 6 = 12, number of droplets in the moving direction M is 1, the amount applied in the pixel (pixel The coating test was conducted under the conditions that V was 300 pl and the amount Q per droplet was 40 pl.

[0082] Under this condition, the surplus nozzle number n satisfying the in-pixel coating amount is expressed by substituting a specific numerical value for Equation 1. The number of IJ nozzles n is 4 or less.

As a result, the number i of combinations of inkjet nozzles 52 is 495.

[0084] Therefore, the coating unevenness is dispersed by applying the color material (selecting the discharge state) using the ink jet nozzle 52 of 495 or less combinations (for example, 50 combinations). It was possible to make the coating unevenness conspicuous. Brief Description of Drawings

FIG. 1 is a perspective view showing an embodiment of a color filter manufacturing apparatus according to the present invention.

FIG. 2 is a schematic view showing a configuration of an inkjet head bar.

FIG. 3 is a schematic view showing a state where a color material is applied to an R pixel region.

FIG. 4 is a schematic diagram for explaining control of an inkjet nozzle in the Y direction.

FIG. 5 is a schematic diagram for explaining control of inkjet nozzles in the heel direction.

FIG. 6 is a flowchart illustrating a color filter manufacturing process.

FIG. 7 is a diagram showing an example of a discharge data table.

FIG. 8 is a diagram showing an example of an inkjet nozzle arrangement.

FIG. 9 is a diagram schematically showing a relationship between a pixel region and a droplet.

Explanation of symbols

[0086] 2 Glass substrate

3 Suction table

5 Ink shed head / one

51 ink shed head

52 Inkjet Nozure

Claims

The scope of the claims

[1] An inkjet head bar (5) in which a plurality of inkjet heads (51) having a plurality of inkjet nozzles (52) are arranged and a glass substrate (2) having a black matrix formed on the surface are relatively positioned. In the color filter manufacturing method in which a color material is applied to the black matrix pixels by the inkjet nozzle (52) while being moved.

A direction parallel to the longitudinal direction of the inkjet head bar (5) is set as the longitudinal direction of the pixel, and discharge / non-discharge of the color material for each inkjet nozzle (52) is set in advance, and the ink jet nozzle ( 52. A method for producing a color filter, characterized in that the discharge of the color material of the inkjet nozzle (52) is controlled based on the relative position information of the glass substrate (2) with respect to 52) and the setting information.

[2] An inkjet head bar (5) in which a plurality of inkjet heads (51) having a plurality of inkjet nozzles (52) are arranged and a glass substrate (2) having a black matrix formed on the surface are relatively positioned. In the color filter manufacturing method in which a color material is applied to the black matrix pixels by the inkjet nozzle (52) while being moved.

Set the direction parallel to the longitudinal direction of the inkjet head bar (5) as the arrangement direction of pixels of the same color, and set ejection / non-ejection of color material for each inkjet nozzle (52) in advance. 52. A method for producing a color filter, characterized in that the discharge of the color material of the inkjet nozzle (52) is controlled based on the relative position information of the glass substrate (2) relative to 52) and the setting information.

[3] The color filter manufacturing method according to claim 1 or 2, wherein the discharge / non-discharge setting is based on a coordinate in the relative movement direction of the glass substrate (2).

[4] Number of inkjet nozzles (52) facing one pixel N, number of surplus nozzles n, amount of inkjet nozzle nozzle (52) droplets per droplet Q, intra-pixel ejection in the relative movement direction 4. The method for producing a color filter according to claim 1, wherein the number M of times and the amount V of the color material applied to one pixel have a relation of number 1.

[Number 1]

V≤M-(N-n)-Q (where n is an integer greater than 1)

5. The color filter manufacturing method according to claim 1, wherein the ejection / non-ejection setting is based on a coordinate in a longitudinal direction of the pixel of the glass substrate (2).

[6] Each time the relative movement is completed, the inkjet head bar (5) is moved in the longitudinal direction, and the amount of movement in the longitudinal direction is such that the application region of the color material before and after the movement in the longitudinal direction is mutually different. 3. The color filter manufacturing method according to claim 1, wherein the color filter manufacturing method is a value obtained by adding a movement amount that does not overlap and a longitudinal pitch of a pixel.

[7] The color filter manufacturing method according to [6], wherein the setting of ejection of the color material and non-ejection of the color material for each inkjet nozzle (52) is changed for each relative movement.

[8] A support member for supporting an ink jet head bar (5) in which a plurality of ink jet heads (51) each having a plurality of ink jet nozzles (52) are arranged, and a glass substrate having a black matrix formed on the surface ( A suction table (3) for sucking and holding 2), a first moving means for relatively moving the inkjet head bar (5) and the glass substrate (2) while maintaining a predetermined gap; and an inkjet head bar The second moving means for moving (5) and the glass substrate (2) in a direction orthogonal to the moving direction by the first moving means, and the dimensions of the glass substrate (2) and the ink jet nozzle (52) are input. The color filter manufacturing apparatus including the first storage means for storing data,

Detection means for detecting a relative position between the glass substrate (2) and the ink jet bar (5), and a discharge control means for controlling discharge of the color material for each ink jet nozzle (52) based on the detected relative position. A color filter manufacturing apparatus.

[9] The application region of the inkjet head bar (5) in the direction orthogonal to the direction of movement of the glass substrate (2) by the first movement unit is perpendicular to the direction of movement of the glass substrate (2) by the first movement unit The color filter manufacturing apparatus according to claim 8, wherein the color filter manufacturing apparatus is larger.

[10] The movement of the glass substrate (2) and the inkjet head bar (5) by the first moving means based on the input positional information of the glass substrate pixel and the inkjet nozzle (52) in the relative movement direction. A first calculation means for calculating Z determination of the discharge / non-discharge of the color material of each inkjet nozzle (52) for each relative position in the direction, and a second storage means for storing the calculation / determination result by the first calculation means The color filter manufacturing apparatus according to claim 8. From the input positional information of the glass substrate pixel and the inkjet nozzle (52) in the relative movement direction, the discharge / non-discharge of the color material in the direction orthogonal to the movement direction by the first moving means of each inkjet nozzle (52). 9. The color filter manufacturing apparatus according to claim 8, further comprising second calculation means for calculating / determining discharge and third storage means for storing calculation / determination results by the second calculation means.