JP2007033926A - Color filter substrate and method for forming color filter - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a color filter substrate which does not form a gap between respective ink layers having different colors, prevents light leakage from occurring when being used for a display element and is capable of improving visibility of the display element, and to provide a method for forming color filter. <P>SOLUTION: Plural colors of inks 7R, 7G, 7B are transferred according to a thermal transfer system, a plurality of dots 25 are formed by the inks 7R, 7G, 7B, a prescribed numbers of dots 25 are arranged in parallel every colors, each color of ink layer 5 is formed by an assembly of one color dot 25, and respective colors of ink layers 5 are successively arranged in parallel. When the number of the dots 25 in one ink layer 5, arranged in the parallel direction of respective ink layers 5 is (p) and the number of the colors of ink 7R, 7G, 7B is (q), the respective ink layers 5 are superimposed such that accumulation size of (q) pieces of ink layers 5 in the parallel direction comes to the size of (p)×(q)-1 dots. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a color filter substrate having a color filter formed by a thermal transfer method and a method for forming a color filter.

  Generally, a color filter substrate for a liquid crystal display element is a member for colorizing the liquid crystal display element, and three primary colors of red (R), green (G), and blue (B) on a transparent substrate such as glass or transparent resin. The color pixel is formed by coloring. Further, a black black matrix is formed between each color pixel as necessary.

  Conventionally, these color pixels and black matrix have been manufactured by a photolithographic method or an inkjet method (for example, see Patent Documents 1 to 4).

  In the case of forming color pixels or black matrix of the color filter substrate by such photolithography method or ink jet method, in the ink jet method, a partition wall is formed so that the inks of each color do not mix, or the ink thickness is uniform due to surface tension. There was a problem that it was difficult to become. In addition, the photolitho method has the disadvantage that the process management is complicated and the manufacturing cost is very high.

  In view of this, the inventors of the present invention have considered a technique for forming a color filter by transferring a plurality of colors of ink onto one surface of a transparent substrate by a thermal transfer method. According to the method of forming a color filter by this thermal transfer method, a color filter substrate having high-definition and high-resolution pixels, high reliability, and low cost can be manufactured.

  The color filter of the color filter substrate manufactured by this thermal transfer method uses, for example, a plurality of thermal heads provided corresponding to each ink ribbon for ink of each color ink ribbon such as R, G, B, etc. The ink is sequentially transferred by a thermal transfer method, and a predetermined number of dots are arranged in parallel for each color, and ink layers of respective colors formed by a set of dots of one color are sequentially arranged in parallel. In such a color filter substrate, if a gap is formed between the dots, light leakage occurs. When such a color filter substrate is used as a display element, the visibility of the display element is increased. It will decline. For this reason, the color filter is preferably formed so that there is no gap between the ink layers.

  However, when transferring ink of each color by the above-described thermal transfer method using the thermal head, since the transfer is performed separately for each color ink, the transfer position of the ink may be shifted for each color. In such a case, a gap may be formed between the ink layers composed of ink dots of different colors.

  For this reason, in the color filter substrate manufactured using the above-described thermal printer, there is a possibility that a gap is formed between the ink layers of different colors in the color filter. When used in the above, there is a problem in that light leakage occurs in the color filter and the visibility of the display element is lowered.

Japanese Patent Laid-Open No. 05-027115 JP 05-273407 A JP 09-043414 A Japanese Patent Laid-Open No. 10-104415

  The present invention has been made in view of these points, and no gaps are formed between the ink layers of different colors, reducing the occurrence of light leakage when used in a display element, and the display. It is an object of the present invention to provide a color filter substrate and a method for forming a color filter that can improve the visibility of an element.

  In order to achieve the above object, the color filter substrate according to the present invention is characterized in that a plurality of color inks are transferred by a thermal transfer method, a plurality of dots are formed by the ink, and a predetermined number of the dots are arranged in parallel for each color. The ink layer of each color is formed by the set of dots of one color, the ink layers of each color are sequentially arranged in parallel, and the ink layers of different colors adjacent to each other at the end of the ink layer It is in a point that is superimposed on.

  According to the color filter substrate of the present invention, since the edge portions of the adjacent ink layers are superimposed on the ink layers of different colors, gaps are formed between the ink layers of different colors. Can be prevented.

  Another feature of the color filter substrate according to the present invention is that when the number of dots arranged in the parallel direction of each ink layer in one ink layer is p and the number of colors of the ink is q, q The ink layers are overlapped so that the integrated dimension of the ink layers in the parallel direction becomes a dimension of p × q−1 dots.

  According to the color filter substrate of the present invention, the ink layers are overlapped so that the integrated dimension of the q ink layers in the parallel direction becomes a dimension of p × q−1 dots. That is, it is possible to reliably overlap adjacent colors without increasing the resolution more than necessary at a finite head resolution. If this overlapping portion is performed by dot addressing, the resolution becomes head pitch × p × q times, which is not realistic. Further, if such a control is not performed and only one simple color is printed with one dot and the printing position of each color is simply shifted, a gap is opened for each cycle corresponding to the overlapping, and this is not realized. That is, it is possible to superimpose ink most effectively and surely within a limited head resolution.

  Another feature of the color filter substrate according to the present invention is that a black matrix layer is formed in a portion where the ink layers are overlaid.

  According to the color filter substrate of the present invention, since the black matrix layer is formed in the portion where the end portions of the respective ink layers are overlapped, the boundary portion between the ink layers of the respective colors is formed. This can be clarified, and when the color filter substrate is used as a display element, the luminance of the display element can be improved.

  The other color filter substrate according to the present invention is characterized in that the ink layers are overlapped by the size of 1 / q of the one dot.

  According to the color filter substrate of the present invention, the edge portions of the ink layers adjacent to the ink layers of different colors are overlapped by the 1 / q size of the one dot, so It is possible to prevent a gap from being formed between the ink layers.

Further, the color filter forming method according to the present invention is characterized in that a plurality of colors of ink are transferred by a thermal transfer method, and a plurality of dots are formed by the ink.
A predetermined number of the dots are arranged in parallel for each color to form an ink layer of each color that is a set of dots of one color, and the ink layers of each color are sequentially arranged in parallel,
The ink layers are formed so as to overlap the ink layers of different colors adjacent to the end portions of the ink layers.

  According to the color filter forming method of the present invention, the end portions of the adjacent ink layers are overlapped with the ink layers of different colors, so that gaps are formed between the ink layers of different colors. Can be prevented.

  Further, another color filter forming method according to the present invention is characterized in that the number of dots arranged in the parallel direction of the ink layers in the one ink layer is p, and the number of colors of the ink is q. In this case, the ink layers are arranged so that the integrated dimension in the parallel direction of the q ink layers is p × q−1 dots.

  According to the color filter forming method of the present invention, the ink layers are overlapped so that the integrated dimension of the q ink layers in the parallel direction becomes a dimension of p × q−1 dots. For this reason, even if it has a finite head resolution, each ink can be reliably stacked without any gap.

  As described above, according to the color filter substrate and the color filter forming method of the present invention, it is possible to prevent a gap from being formed between the ink layers 5. As a result, when this color filter substrate is used for a display element, light leakage can be prevented, and the visibility of the display element can be improved.

  Hereinafter, an embodiment of a color filter substrate and a color filter forming method according to the present invention will be described with reference to FIGS.

  1 to 4 show an embodiment of a color filter substrate according to the present invention, and FIG. 5 shows an embodiment of a manufacturing apparatus for manufacturing the color filter substrate of FIG.

  The color filter substrate of the present embodiment is formed using inks of four different colors of red (R), green (G), blue (B), and black (BK).

  As shown in FIG. 1A, the color filter substrate 4 has a plurality of color filters 3 arranged on an upper surface of a glass substrate 2 as an example of a transparent substrate on which a large rectangular mother substrate 1 is formed. Formed by aligning n columns (6 rows × 6 columns in this embodiment), and then cutting the mother substrate 1 into a plurality of individual color filter substrates 4 as shown in FIG. It is manufactured by separating.

  Each color filter substrate 4 has, for example, a color filter 3 on the upper surface of the glass substrate 2 as shown in FIG. 2 showing a cross-sectional view of FIG. 1B and FIG. 3 showing a partially enlarged plane of FIG. The color filter 3 is formed by thermally transferring and forming the ink layer 5 on the upper surface of the glass substrate 2 and further forming the overcoat layer 6 on the ink layer 5 by thermal transfer. The ink layer 5 is formed using inks 7R, 7G, and 7B having three primary colors R, G, and B that form color pixels. In the ink layer 5, each of the ink layers 7R, 7G, and 7B is formed. The dots 25 are repeatedly arranged in the row direction for each of the dots 25 of each color and continuously arranged in the column direction, and are arranged in parallel in stripes extending in the column direction for each color. Ink layers 5R, 5G, and 5B, which are aggregates, are respectively formed.

  In the color filter 3, as shown in FIG. 3, when the number of dots arranged in the parallel direction of each ink layer 5 in one ink layer 5 is p and the number of ink colors is q, q Arranged so that the end of each ink layer 5 overlaps the end of the adjacent ink layer 5 of different color so that the integrated dimension of the ink layers 5 in the parallel direction becomes the size of p × q−1 dots. Has been. In the present embodiment, the number of dots arranged in the width direction of one ink layer 5 is three, and the colors of the inks 7R, 7G, and 7B are three colors of R, G, and B. The end portions of the ink layers 5 are overlapped with the end portions of the ink layers 5 of different colors adjacent to each other so that the integrated width size of the layers 5R, 5G, and 5B is 3 × 3-1 = 8 dots. Has been placed. Thereby, the edge part of the ink layer 5 of each color is overlaid by 1 / q of the width dimension of 1 dot 25, and 1/3 according to this embodiment.

  Further, as shown in FIG. 4, a black matrix layer 28 formed of BK ink 7BK is formed in a portion where the end portions of the ink layers 5 are overlapped.

  In the present embodiment, the ink layers 5 of the respective colors formed by the dots 25 of the respective inks 7R, 7G, and 7B are arranged in parallel in a stripe shape extending in the column direction. The ink layers 5 of each color may be arranged in parallel in a stripe shape extending in the row direction, and the end portions of the ink layers 5 may be overlapped with the end portions of the ink layers 5 of different colors adjacent to each other.

  Further, in the present embodiment, the black matrix layer 28 is formed in the portion where the end portions of the ink layers 5 are overlapped, but the black matrix layer 28 may not be formed. .

  Subsequently, a manufacturing apparatus 10 for manufacturing the color filter substrate 4 of the present embodiment will be described with reference to FIG.

  The apparatus 10 for manufacturing the color filter substrate 4 manufactures a color filter substrate using inks of four different colors of red (R), green (G), blue (B), and black (BK). Yes.

  As shown in FIG. 5, the color filter substrate manufacturing apparatus 10 transfers the color filter 3 to the glass substrate 2 by an intermediate transfer method to form the color filter substrate 4.

  The color filter substrate 4 manufacturing apparatus 10 includes an intermediate transfer body 11 that is used for intermediate transfer. The intermediate transfer body 11 is wound around a feed roll 12 in a roll shape, and is fed from the feed roll 12. The intermediate heat transfer platen 13 is wound around the intermediate heat transfer platen 13, passes through the first thermal transfer means 14, then passes through the second thermal transfer means 15, and is wound around the take-up roll 16. ing. The intermediate transfer member 11 is formed of a resin film made of polyester such as thin paper such as dalasin paper condenser paper, polyethylene terephthalate, polyphenylene sulfide, polyether ether ketone, polyether sulfone, etc. On the outer surface in the radial direction of the transfer platen 13, a release receiving layer 17 that becomes the overcoat layer 6 when transferred to the glass substrate 2 is laminated in advance. The material of the release receiving layer 17 is, for example, a thermosetting epoxy resin / acrylic resin.

  The width of the intermediate transfer member 11 is formed to be equal to the width dimension (the length in the m row direction) of the glass substrate 2 constituting the mother substrate 1. Around the intermediate transfer platen 13, four first head units 18 </ b> R serving as first thermal transfer means 14 for transferring the ink layer 5 of the color filter 3 sequentially to the surface of the release receiving layer 17 of the intermediate transfer body 11, second The head unit 18G, the third head unit 18B, and the fourth head unit 18BK are sequentially arranged so as to be parallel to the conveyance direction of the intermediate transfer body 11.

  Each of the head units 18R, 18G, 18B, and 18BK has an ink ribbon 19 to which inks 7R, 7G, 7B, and 7BK having different colors are applied (the same reference numerals are used since the configuration is the same). . Each of the inks 7R, 7G, 7B, and 7BK is formed of heat-resistant ink so as to withstand the thermal transfer temperature (up to about 250 ° C.) in the first thermal transfer unit 14 and the second thermal transfer unit 15 part, and the second thermal transfer unit In order to ensure smoothness by overcoating in the means 15 part, it is formed to a thickness of 1 to 5 μm. Each ink ribbon 19 is wound around a pair of ink ribbon rolls 20 and is guided by a plurality of ribbon guide rollers 21 so that the application surfaces of the inks 7R, 7G, 7B, and 7BK are opposed to the intermediate transfer member 11, respectively. It is arrange | positioned so that it may be conveyed.

  Furthermore, each head unit 18R, 18G, 18B, 18BK has thermal heads 8R, 8G, 8B, 8BK, respectively, and is arranged along the conveyance direction of the intermediate transfer body 11. Each thermal head 8R, 8G, 8B, 8BK is formed in a length (length in the m-row direction) corresponding to the width dimension of one color filter 3, and each thermal head 8R, 8G, 8B, 8BK is formed. A plurality of heating elements 9 corresponding to the width dimension of the color filter 3 are arranged in parallel in a position facing each ink ribbon 19 in FIG. In the present embodiment, each heater element 9 has a width dimension of 25 μm and a high-definition arrangement of about 1000 dpi.

  The head units 18R, 18G, 18B, and 18BK are provided so as to be movable in a direction orthogonal to the conveyance direction of the intermediate transfer body 11. As a result, the thermal head 8G can be disposed at a position where the end of the ink layer 5G is formed by being overlapped with the end of the ink layer 5R by the size of 1/3 of the width of one dot 25, and The thermal head 8B can be disposed at a position where the end of the ink layer 5B is formed to overlap the end of the ink layers 5R and 5G by the size of 1/3 of the width of one dot 25. ing.

  The second thermal transfer means 15 has a heating roll 22 and a pressure-bonding roll 23 that sandwich the glass substrate 2. The heating roll 22 heats the ink layer 5 formed on the intermediate transfer body 11 from below through the glass substrate 2, and the pressure roll 23 thermally transfers the ink layer 5 transferred to the intermediate transfer body 11 to the glass substrate 2. For this purpose, pressure is applied to the intermediate transfer member 11 from above.

  Next, the operation of the color filter substrate 4 manufacturing apparatus 10 according to the present embodiment, that is, the method for forming the color filter 3 will be described.

  When recording data for forming the color filter 3 having the pattern shown in FIG. 4 is input to the color filter substrate manufacturing apparatus 10, first, the color filter substrate manufacturing apparatus 10 starts conveyance of the intermediate transfer body 11. At the same time, the thermal heads 8R, 8G, and 8B of the head units 18R, 18G, and 18B are lowered, and the thermal heads 8R, 8G, and 8B and the intermediate transfer platen 13 are connected to the intermediate transfer body 11 and the ink ribbons 19 respectively. Pressure contact. Then, predetermined heat generating elements 9 of the thermal heads 8R, 8G, and 8B (heat generating elements 9 corresponding to the arrangement of the inks 7R, 7G, and 7B in FIG. The inks 7R, 7G, and 7B are transferred to predetermined portions on the surface of the release receiving layer 17.

  Specifically, first, the thermal head 8R is lowered, and a predetermined heating element 9 of the thermal head 8R (in this embodiment, the heating element 9 corresponding to the arrangement of the ink 7R in FIG. 3) is heated to generate a predetermined value. The ink 7R is transferred to the portion to form the dots 25, thereby forming the R ink layer 5R.

  Subsequently, the thermal head 8G is disposed at a position where the end of the ink layer 5G is formed so as to overlap the end of the ink layer 5R by 1/3 of the width of one dot 25, and then the thermal head 8G is placed. The head 8G is lowered, and a predetermined heating element 9 of the thermal head 8G (in this embodiment, the heating element 9 corresponding to the arrangement of the ink 7G in FIG. 3) generates heat. Then, the thermal head 8G transfers the ink 7G to the position where the end of the ink layer 5G overlaps the end of the ink layer 5R to form the dots 25, thereby forming the G ink layer 5G.

  Further, the thermal head 8G is arranged at a position where the end of the ink layer 5G is formed to be overlapped with the end of the ink layer 5R by the size of 1/3 of the width of 1 dot 25, and then the thermal head 8G is disposed. 8B is lowered, and a predetermined heating element 9 (in this embodiment, the heating element 9 corresponding to the arrangement of the ink 7B in FIG. 3) of the thermal head 8B is caused to generate heat. Then, the thermal head 8B transfers the ink 7B to a position where the end of the ink layer 5B overlaps the end of the ink layers 5R and 5G to form the dots 25, thereby forming the B ink layer 5B.

  Thereby, the integrated dimension of the ink layers 5 of the three inks 7R, 7G, and 7B of R, G, and B in the parallel direction can be set to a dimension of 3 × 3-1 = 8 dots.

  The cueing of the print start position of each ink 7R, 7G, 7B as the color filter 3 is performed by energizing each heating element 9 by aligning with a sensor (not shown). When the formation of the ink layer 5 having the length in the column direction of one color filter 3 is completed, the thermal heads 8R, 8G, and 8B are raised for a predetermined time until printing of the next color filter 3 is started, and printing is interrupted. Thereafter, the thermal heads 8R, 8G, and 8B are lowered again at the printing start position of the next color filter 3 to form the ink layer 5 in the same manner, whereby the ink of the color filter 3 of 1 column × m row is formed. The layer 5 is transferred to the intermediate transfer member 11.

  When the transfer of the ink layer 5 constituting the color filter 3 of 1 column × m row to the intermediate transfer body 11 is completed, the intermediate transfer body 11 is conveyed in the reverse direction and each head unit 18R, 18G, 18B is moved. The ink layer 5 which is moved to a predetermined position in the row direction and forms the color filter 3 of the next column of 1 column × m rows is adjacent to the ink layer 5 of the first column, like the ink layer 5 of the first row. To transfer to the intermediate transfer member 11. Then, the ink layer 5 constituting the color filter 3 in the row direction is sequentially transferred to the intermediate transfer body 11.

  In addition, when the respective inks 7R, 7G, and 7B are thermally transferred, the adjacent inks 7R, 7G, and 7B are thermally transferred after a predetermined drying time has elapsed after any one of the inks 7R, 7G, and 7B is thermally transferred to the release receiving layer 17. In this case, one of the thermal heads 8R, 8G, and 8B causes one ink 7R, 7G, and 7B to be thermally transferred to the release receiving layer 16 over the entire length of the color filter 3 in the column direction, and then intermediate transfer is performed. The body 11 may be reversely rotated to return to its original state, and then the adjacent inks 7R, 7G, and 7B may be thermally transferred to the peeling receiving layer 16 over the entire length of the color filter 3 in the column direction.

  Further, the color filter substrate manufacturing apparatus 10 lowers the thermal head 8BK of the head unit 18BK, and presses the thermal head 8BK and the intermediate transfer platen 13 through the intermediate transfer body 11 and each ink ribbon 19. Then, a predetermined heating element 9 of the thermal head 8BK is heated to transfer the ink 7BK to a predetermined portion of the surface of each ink layer 5, thereby forming a black matrix layer 28.

  Subsequently, when the ink layer 5 formed on the surface of the peel-receiving layer 17 of the intermediate transfer body 11 proceeds to the position of the second thermal transfer means 15, the glass substrate 2, the ink layer 5, The peeling receiving layer 17 and the intermediate transfer member 11 are sandwiched with a predetermined pressure and heated to about 250 ° C. As a result, the ink layer 5 is welded to the upper surface of the glass substrate 2, and the thermosetting resin that forms the release-receiving layer 17 is thermally cured and converted into a thermal oxide film by annealing. . Thereafter, in a peeling means portion (not shown) disposed on the downstream side of the second thermal transfer means 16, the release receiving layer 17 that is thermally cured and formed into a thermal oxide film is peeled off from the intermediate transfer body 11, and the ink layer 5. Is transferred onto the upper surface of the glass substrate 2 as the color filter 3, and the release receiving layer 17 peeled off from the intermediate transfer body 11 is used as the overcoat layer 6. This overcoat layer 6 has the surface smoothness of the intermediate transfer body 11 transferred, and the surface has smoothness with extremely low roughness.

  Here, in the second thermal transfer means 15, the color filter 3 and the overcoat layer 6 for the glass substrate 2 are one of the ink layers 5 of the m-row × n-column color filter 3 formed on the intermediate transfer body 11. The transfer may be performed for each row, or may be performed simultaneously for a plurality of rows or all rows.

  Thereby, the color filter 3 and the overcoat layer 6 can be formed on the upper surface of the glass substrate 2, and the mother substrate is formed by forming all the color filters 3 and the overcoat layer 6 at predetermined positions on the glass substrate 2. 1 is formed.

  Thereafter, the mother substrate 1 is individually cut and separated, whereby a unit of color filter substrate 4 is manufactured.

  The color filter substrate 4 formed in this way can form the ink layer 5 by thermal transfer by forming the size of the heating element 9 of the thermal head 8 to a small size of, for example, 25 μm square. A color filter substrate having high resolution pixels, extremely high resolution, and low cost.

  Thus, according to the color filter substrate 4 of the present embodiment, the end portions of the ink layers 5 are respectively arranged so that the integrated dimension of the q ink layers in the parallel direction becomes a dimension of p × q−1 dots. It is piled up. For this reason, even if it has a finite head resolution, each ink can be reliably stacked without any gap.

  Therefore, by preventing the gaps from being formed between the ink layers 5 as described above, light leakage occurs when the color filter substrate 4 of the present embodiment is used as a display element. Can be prevented, and the visibility of the display element can be improved.

  Further, since the black matrix layer 28 is formed in the portion where the end portions of the ink layers 5 are overlapped, the boundary portion of the ink layers 5 of each color can be clarified, and the color When the filter substrate 4 is used for a display element, the luminance of the display element can be improved.

  In addition, this invention is not limited to the said embodiment, A various change is possible as needed.

  For example, instead of forming the release receiving layer 16 on the intermediate transfer body 11 in advance, the release receiving layer 17 is also transferred to the intermediate transfer body in the same manner as the other inks 7R, 7G, 7B by the head units 18R, 18G, 18B. 11 may be printed. In addition, although a film-shaped intermediate transfer body 11 is used, the present invention is not limited to this, and a drum-shaped intermediate transfer body 11 may be used.

  In the present embodiment, the head units 18R, 18G, and 18B move in the direction orthogonal to the transport direction of the intermediate transfer body 11 to transfer the inks 7R, 7G, and 7B of the respective colors, whereby the ink layers 5 are transferred. However, the present invention is not limited to this. For example, each ink layer 5 is formed so as to overlap by moving the medium side to which each ink 7R, 7G, 7B is transferred. Also good.

(A) is a plan view showing a mother substrate on which a number of color filter substrates according to the present invention are formed, and (b) is a plan view of a state in which a part of the color filter substrate of (a) is separated. Enlarged sectional view along line AA in FIG. FIG. 1B is an enlarged plan view showing a part of the R, G, and B ink layers of the color filter substrate. FIG. 3 is an enlarged plan view showing a color filter in which a black matrix layer is formed on each ink layer in FIG. 1 is a block diagram showing a manufacturing apparatus for manufacturing the color filter substrate of FIGS.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Mother board | substrate 2 Glass substrate 3 Color filter 4 Color filter board | substrate 5 Ink layer 6 Overcoat layer 7R, 7G, 7B Ink 8R, 8G, 8B Thermal head 9 Heating element 10 Color filter board manufacturing apparatus 11 Intermediate transfer body 14 1st Thermal transfer means 15 Second thermal transfer means 17 Peeling receiving layer 19 Ink ribbon 25 Dot 28 Black matrix layer

Claims (6)

Multiple colors of ink are transferred by the thermal transfer method,
A plurality of dots are formed by the ink,
A predetermined number of the dots are arranged in parallel for each color, and an ink layer of each color is formed by a set of dots of one color,
The ink layers of the respective colors are sequentially arranged in parallel,
A color filter substrate, wherein an end portion of the ink layer is overlaid on the adjacent ink layers of different colors.   When the number of dots arranged in the parallel direction of each ink layer in one ink layer is p and the number of colors of the ink is q, the cumulative dimension in the parallel direction of q ink layers is p × q. The color filter substrate according to claim 1, wherein each of the ink layers is overlapped so as to have a dimension of −1 dot.   The color filter substrate according to claim 1, wherein a black matrix layer is formed in a portion where the ink layers are overlapped.   4. The color filter substrate according to claim 1, wherein each of the ink layers is overlapped by a size of 1 / q of the one dot. 5. Transfer multiple colors of ink by thermal transfer method,
Forming a plurality of dots with the ink;
A predetermined number of the dots are arranged in parallel for each color to form an ink layer of each color that is a set of dots of one color,
The ink layers of each color are sequentially arranged in parallel,
A method of forming a color filter, wherein the ink layer is formed so as to overlap with an ink layer of a different color adjacent to an end of each ink layer. When the number of dots arranged in the parallel direction of each ink layer in the one ink layer is p and the number of colors of the ink is q, the cumulative dimension in the parallel direction of the q ink layers is p ×. A method for forming a color filter, wherein the ink layers are arranged so as to have a size of q-1 dots.

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