JPH02156204A - Microcolor filter array and production thereof - Google Patents

Abstract

PURPOSE:To obtain the microcolor filter array having a high grade at a good yield by arranging the short pieces of colored fiber pieces regularly in such a manner that all of the cut faces of the fibers are flush with each other on the same plane and occupying the circumferences of the respective short fiber pieces with a light shieldable resin compsn. thereby forming the flat plate object fixed by the resin. CONSTITUTION:The short pieces of the fibers 1 and 3 which are respectively separately colored to the three primary colors of light, red (R), green (G) and blue (B) are so arranged regularly that the cut faces of the fibers are flush with each other on the same plane. The light shieldability is imparted to the colored fibers 1 to 3 by coating the surfaces thereof with a black epoxy resin 4. The fibers 1 to 3 imparted with the light shieldability are then arranged as specified and are further impregnated and fixed with the black epoxy resin 4. The good and sharp color image display having the excellent grade without having the drop-outs of picture elements by clogging, etc., is obtd. in this way and the formation of the display to the larger area is possible. The improvement in the mass productivity is attained as well.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to micro color filter arrays. For more details, see LCD (liquid crystal display), ECI
) (Electro Chromic Display), ELD
(electroluminescent display), CR
T (cathode ray tube) display, fluorescent display tube, LEI) (
image display elements such as light emitting diode displays),
The present invention relates to a micro color filter array used in image input devices such as image pickup tubes and solid-state image sensors (CCDs: charge coupled devices).

(Prior Art) Each pixel of an image display element capable of black and white display has three primary colors of light, namely red (R), green (G), and i? Color image display is realized by overlapping the filters in (B).

In addition, in an image sensor in which elements r capable of sensing the intensity of light are arranged in a matrix, each element of the matrix is marked with red (R).
), green (G), and 'f (B) filters to achieve color image input. These fine filters of the three primary colors of light, red (R), green (G), and blue (B), arranged in a mosaic or stripe pattern so as to correspond to each pixel, are called a micro color filter array. , various color 1TII image display devices, and color image display devices.

Conventionally, micro color filter arrays have been produced by printing methods, dyeing methods, electrophoretic coloring methods, and the like.

The printing method is a method in which ink with pigments dispersed therein (the three primary colors of light, namely red (R), green (G), and t'r (B)) is directly printed on the substrate using, for example, offset printing. .

The dyeing method involves processing photosensitive acrylic resin or gelatin coated onto a substrate into a predetermined shape using a photoringraph, dyeing and fixing it using dye, and dyeing it in each color (i.e., the three primary colors of light, red). R), green (G).

’t(B)).

In the electrophoretic coloring method, transparent electrodes that have been butter-printed into a predetermined shape by photolithography are used as materials 1-
red (
R), green (G), i! This is a method of coloring and dividing f (B).

(Problems to be Solved by the Invention) 11 As mentioned above, the micro color filter array is a matrix of fine filters, and even if a defect occurs in even one pixel, the quality of the product will be significantly affected. Shiri [11. The printing method has a problem in microfabrication, and it is difficult to produce high-quality microcolor filter arrays at a yield of <1.

Although it is possible to produce high-quality microcolor filter arrays using staining methods and electrophoretic coloring methods, they have the disadvantage that they are inferior in productivity and cannot easily be obtained with large areas due to the use of photolithography. .

In view of this situation, the present inventor conducted Kei Q research, and as a result,
We have arrived at our next invention.

(Means for Solving the Problems) That is, the present invention uses the three primary colors of light, namely red (R) and green (G).
), +W (B), short pieces of separately colored fibers (threads) are regularly arranged so that the cut surfaces of the threads are on the same plane,
The micro color filter array is characterized in that the periphery of each fiber strip is occupied by a light-shielding resin composition, and each fiber strip is fixed by the resin and is a plate-like material. Fibers colored separately in primary colors, namely red (R), green (G), and i'i (B) (
A large number of threads) are regularly embedded in a light-shielding resin composition, and the embedded material is then immersed in a direction substantially perpendicular to the length direction of the fibers.
A method for manufacturing a micro color filter array characterized by cutting (slicing) and forming into a plate-like product (R)
, green (G), and +lr (B) are natural fibers such as cotton, linen, η wool, and raw silk.
Regenerated fibers such as T, rayon, cupro, acetate,
16 synthetic fibers such as triacetate (, polyester, nylon/, acrylic, vinylon, poval, polyurethane, vinylidene, bi1/, gelatin/, casein, etc.) Monofilaments such as inorganic fibers such as glass Alternatively, multifilament can be used.However, from an industrial standpoint, it is preferable to use ++F raw fibers, ゛r-synthetic fibers, and synthetic fibers of stable quality.Furthermore, from the viewpoint of ease of dyeing, cellulose-based fibers are preferred. Among the ILF raw fibers, synthetic fibers, and synthetic fibers, vinylon, poval, gelatin, casein, etc. are preferable.Also, in order to improve mechanical and optical properties, N synthetic fibers made of a combination of multiple materials are used. Good too.

As for the method of coloring, +! There are methods such as spinning using r'F4, and removing power for dyeing after spinning. The use of colored glass fibers is also a preferred method. Furthermore, a method of slitting an LR color film is also effective.

The three primary colors of light used in the present invention are red (R) and green (
G), l'l' (B) respectively? As the colored yarn, a yarn with light-shielding properties added to the side surface can be used. 15. As a method of imparting 89 properties, light-shielding properties are added to the rough lr isoiro by inorganic stains 1 or face f1. A method of spinning the raw material colored in a predetermined color by disposing it on the outside of 1, a method of dyeing only the surface to light-blocking after spinning, a method of dyeing only the surface with light-blocking properties, a beating machine, or 11! (There are methods of coating the thread surface with resin colored in four colors using machine dyes or pigments, methods of using a thin film method such as pale blue, and sputtering.

these? The cross-sectional shape of the HQ yarn or the single-color yarn with light-shielding properties on the sides is not particularly limited, but it is preferably circular or rectangular.

The diameter of these 'a

As the light-shielding adhesive used in the present invention, for example, a curable resin composition imparted with light-shielding P1 mi can be used. Examples of the curable resin composition include, but are not limited to, thermosetting resins such as epoxy resins and phenol resins, active energy ray curable resins such as acrylic esters, polyethylene, polyvinyl chloride, and polycarbonate. Q + iJ plastic resins such as , polymethyl methacrylate, etc. can be used.

Fibers colored in the three primary colors are regularly embedded in light-shielding resin, and the fixed embeddings are sliced in a direction perpendicular to the length of the fibers) to form thin flat plates. Although the thickness of this flat plate is not particularly limited, it is preferably 5 to 500, more preferably 10 to 200/jj. These flat plates may be made in a small area by equally dividing the required area, and several flat plates of the small area are arranged, May be used.

The micro color filter array in the present invention may be attached to a substrate such as quartz glass according to the method. Furthermore, it is also possible to perform polishing according to the 7th approval. Also,
The surface may be further coated with a protective coating agent.

The micro color filter array in the present invention includes:
Annealing treatment can be applied depending on the knob.

In the present invention, the three primary colors of light, namely red (R).

Green (G), +'? In (B), each of the four colored threads is arranged in a regular manner to form a microcolor film array.

The light-shielding resin hard material maintains a regular arrangement of 77 colored threads and forms a stain-proof 1L mask on the image display element! To run away.

The use of threads with light-shielding properties on the sides improves the bleed-proof effect.

Polishing treatment and annealing treatment improve dimensional stability.
In particular, the annealing process improves the optical characteristics of the micro color filter array.

As is clear from its configuration, the micro color filter array according to the present invention is capable of large-area production, easy production, and has a high degree of freedom in color determination. Therefore, it is easy to achieve vivid colors and has excellent light resistance! It has excellent characteristics such as 1p il and the ability to replace the deposited F1 once.

EXAMPLES Hereinafter, the present invention will be specifically explained with reference to Examples, but the present invention is not limited to these in any way.

(Example) Ir IIFffl! ! By dispersing and mixing mechanical pigment fine powder, the three primary colors of light, namely red (R), green (G),
Colored yarns with a diameter of 90 mm were obtained by melt spinning from polyester resins colored in four colors (B). The surface of the obtained colored yarn was coated with black epoxy resin 5- to provide light-shielding properties. Next, the light-shielding yarn was given a predetermined arrangement, and further impregnated and fixed with black epoxy resin.

The obtained impregnated fixed material was sliced in a direction perpendicular to the thread direction to form a micro color filter array as shown in FIG.

Obtained microfilter array solution, 1'8
Did you get a good color image as a result of using the display element Y-? )Ta.

j! 1 micro color filter array to white E
LI) (electroluminescent display)
As a result, good and clear color images were obtained.

(Effects of the Invention) As described above, the striped color filter of the present invention has excellent quality without missing pixels due to clogging, enables good and clear color image display, and has a large area. It has excellent characteristics such as easy production and excellent productivity.

[Brief explanation of the drawing]

FIG. 1-a is a diagram showing the embedding material for the micro color filter array in Example-1, and FIG. - face the figure. Patent applicant: TOTR Boseki Co., Ltd.

Claims (2)

[Claims] (1) The three primary colors of light are red (R), green (G), and blue (B).
), strips of differently colored fibers (threads) are regularly arranged so that the cut surfaces of the fibers are all on the same plane, and the periphery of each strip of fiber is occupied by a light-shielding resin composition, and each A micro color filter array characterized in that the fiber strips are flat plate-like objects fixed by the resin. (2) The three primary colors of light are red (R), green (G), and blue (B).
), each individually colored fiber (thread) is regularly embedded in a light-shielding resin composition in large numbers, and then the encapsulated product is cut (sliced) in a direction substantially perpendicular to the length direction of the fiber. ) A method for manufacturing a micro color filter array characterized by forming it into a flat plate-like object.