Method for producing color filter, color filter, and reflection-type display device

A manufacturing method and technology of color filters, applied in the direction of copying/marking methods, instruments, optical filters, etc., can solve the problems of unfavorable cost, waste of resist material, and large number of processes, etc.

Inactive Publication Date: 2014-02-05
NIPPON STEEL CHEMICAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Generally speaking, it is said that the maximum diffuse reflectance using this electrophoretic method is less than 40%, but it is now required to further improve the reflective efficiency
However, in this patent document 4, a so-called photolithography method is adopted, that is, a resist material of a certain color is applied to a support base material for forming a color filter, and after drying, pattern exposure is performed using an exposure machine. Developed with an alkaline developer to form a colored region, and repeat it for each color to manufacture a color filter, so there are many steps, which is disadvantageous in terms of cost and wasteful of resist materials.

Method used

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  • Method for producing color filter, color filter, and reflection-type display device
  • Method for producing color filter, color filter, and reflection-type display device
  • Method for producing color filter, color filter, and reflection-type display device

Examples

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manufacture example 1

[0085] Image 6 It shows the manufacturing procedure of the mosaic-like color filter in which four colors of red (R), green (G), blue (B), and white (W) form a colored area of ​​a checked pattern. First, in Image 6 In the first inkjet coating shown in (A), the imaginary grid (longitudinal d) arranged in the x-y direction on the support substrate 1 × horizontal d 1 ), for a cell subgroup consisting of 4 cells (2d 1 ×2d 1 ) in the upper right cell of ) sprays the first ink composition containing ink repellent components and ultraviolet curable components and is mixed with a colorant to be colored red, and irradiates ultraviolet rays (UV1) to form a red colored coating film with surface ink repellency. In this way, in one inkjet coating, the ink compositions are not adjacent to each other with respect to the left, right, up and down directions of the lattice, so that a predetermined colored coating film can be accurately formed. At this time, the target lattice may be fille...

manufacture example 2

[0091] in addition, Figure 7 A manufacturing procedure of a mosaic-like color filter in which three colors of red (R), green (G), and blue (B) form a colored region of a checkered pattern is shown. In this example, in the first inkjet coating, for (x n ,y n ), (x n+1 ,y n ), (x n ,y n+1 ) and (x n+1 ,y n+1 ) in the cell subgroup a formed by these 4 grids is in the grid (x n ,y n ) and grid (x n+1 ,y n+1 ) in the positional relationship of 2 grids, respectively eject 4 drops of the first ink composition colored red, induce surface ink repellency by ultraviolet curing (UV1), and form a red colored coating film. Next, for pairs in the lattice (x n ,y n+1 ) and lattice (x n+1 ,y n+2 ) in the positional relationship of 2 grids, respectively eject 4 drops of the first ink composition colored green, induce surface ink repellency by ultraviolet curing (UV2), and form a green colored coating film.

[0092] By the above, for example lattice (x n ,y n+2 ) becomes the g...

manufacture example 3

[0094] in addition, Figure 8 It is another example showing the manufacturing procedure of the mosaic-like color filter forming the coloring area of ​​the grid pattern of three colors of red (R), green (G) and blue (B). Ink coating the respective first ink compositions of the 3 colors in the grid (x n ,y n ) and lattice (x n+1 ,y n+1 ) in the positional relationship of spraying and irradiating ultraviolet rays (UV1) to form a three-color colored coating film.

[0095] Next, in the second inkjet coating, such as grid (x n ,y n+1 ) and lattice (x n+1 ,y n ), spray the second ink composition of each of the three colors to the grid gap area formed by the first inkjet coating, and irradiate ultraviolet light (UV2) to form a three-color colored coating film to obtain a mosaic-like color filter. In this way, the four corners of the colored coating film filling the lattice do not touch, but contact the colored coating films adjacent to the four sides, thereby forming a color f...

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Abstract

Provided are a method for producing a color filter by an inkjet method without the need for a dividing wall or matrix, as well as a color filter obtained thereby and a reflection-type display device comprising the color filter. A first ink composition comprising an ink repellent component and an ultraviolet curable component is discharged by an inkjet method and cured by irradiation with ultraviolet light, thereby providing a predetermined gap region formed of a first coloring coating on a support substrate; a second ink composition comprising an ultraviolet curable component and having a static contact angle ?k of 35° or higher with respect to at least the first coloring coating is discharged by an inkjet method onto the gap region and cured by irradiation with ultraviolet light to form a second coloring coating, whereby a plurality of coloring regions comprising the coloring coatings are formed on a support substrate without there being a dividing wall or matrix interposed therebetween, thus obtaining the color filter.

Description

technical field [0001] The present invention relates to a method for manufacturing a color filter, a color filter, and a reflective display device, and specifically relates to a method for manufacturing a color filter suitable for performing color display on a reflective display device, and the color filter obtained thereby filter, and a reflective display device provided with the color filter. Background technique [0002] As an electronic medium that replaces paper, the development of display devices such as electronic paper is becoming more and more popular. Compared with CRT, liquid crystal display, and electronic paper, which belong to conventional types of displays, reflective display methods using display media composed of white particles, black particles, etc. are mainly used, and high white reflectivity and high contrast are required. Furthermore, it is required to have a memory effect for a displayed image, to be able to be driven at a low voltage, to be thinner, ...

Claims

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Application Information

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IPC IPC(8): B41M3/00G02B5/20B41M5/00C09D11/00C09D11/30
CPCB41M3/003C09D11/101B29D11/00634G02B5/201
Inventor 藤城光一吉冈敬裕斋藤亨浦野和久井口真介汲田健太郎泷田友春
Owner NIPPON STEEL CHEMICAL CO LTD
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