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Substrate manufacturing method

A manufacturing method and substrate technology, which are applied in the manufacturing field of substrates, can solve the problems of high metal reflectivity, metal electrodes visually recognized by a touch panel, reflection of external light, etc.

Active Publication Date: 2022-02-25
TOKYO OHKA KOGYO CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when electrodes and wirings made of metal are formed on the display surface, there is a problem that the user of the touch panel can easily recognize the metal electrodes and metal wirings visually. Even if it is so fine that the human eye cannot visually recognize it, the following problems still arise: Reflection of external light due to the high reflectivity of the metal

Method used

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Examples

Experimental program
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preparation example Construction

[0237]

[0238] The first positive type composition can be prepared by blending the above-mentioned components in predetermined ratios, followed by mixing and stirring by a usual method. In addition, if necessary, further filtration may be performed using a mesh, a membrane filter, or the like.

[0239] [Second Positive Type Composition]

[0240] As described above, the second positive composition includes a resin (A2) that increases solubility in alkali by the action of an acid, and a compound (B2) that generates an acid by irradiation with active light or radiation.

[0241] Hereinafter, the resin (A2) whose solubility to alkali increases by the action of an acid is also referred to as "resin (A2)". Moreover, the compound (B2) which generates an acid by irradiation of an active ray or a radiation is also described as "acid generator (B2)".

[0242] Hereinafter, the essential components or optional components contained in the second positive type composition will be descr...

Embodiment 1

[0467] 100 parts by mass of Novolac resin, 13 parts by mass of a sensitizer, 22.6 parts by mass of a quinonediazide group-containing compound, and 27 mass % of a pigment relative to the mass of the total solid content were uniformly dissolved and dispersed in propylene glycol monomethyl In the base ether acetate, the solid content concentration was adjusted to 20% by mass to obtain a positive tone composition.

[0468] It should be noted that in the positive type composition, 1% by mass of 2-hydroxyethylpyridine and 0.4% by mass of silicon-based surfactant ( BYK-310, manufactured by BYK Chemie).

[0469] As the Novolac resin, a cresol-type Novolac resin having a weight average molecular weight of 4700 and a degree of dispersion of 4.5 was used.

[0470] As the sensitizer, a phenolic resin (trade name: TrisP-PA-MF, manufactured by Honshu Chemical Industry Co., Ltd.) was used.

[0471] As a compound containing a quinonediazide group, a product obtained by esterifying 2,3,4,4'-...

Embodiment 2

[0483] The Novolac resin was changed to a cresol-type Novolac resin with a weight average molecular weight of 4700 and a degree of dispersion of 10.0, except that a positive-type composition was prepared in the same manner as in Example 1, and it was operated in the same manner as in Example 1 to obtain A patterned metal layer and a coating resin layer are formed on the substrate.

[0484] The optical density of the formed covering resin layer was 0.60 / μm.

[0485] In addition, when the shape of the formed coating resin layer was observed with a microscope, the top of the pixel was not covered with the coating resin layer, the film thickness of the coating resin layer was substantially uniform, and no exposure of the patterned metal layer was observed.

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Abstract

An object of the present invention is to provide a method of manufacturing a substrate having a color filter on one main surface, a patterned metal layer formed directly on the color filter or via a transparent layer, and A substrate with a coating resin layer (reflectance control mechanism) coated with a patterned metal layer, by which the patterned metal layer can be easily uniformly coated with the coating resin layer on the substrate having a color filter, In addition, the portion where the metal layer is not formed is less likely to be covered with the coating resin layer. When manufacturing a substrate having a color filter on one principal surface, a patterned metal layer formed directly on the color filter or via a transparent layer, and a coating resin layer covering the patterned metal layer, The coating resin layer is formed using a positive-type photosensitive resin composition containing a matrix resin component (A) having a degree of dispersion (weight average molecular weight Mw / number average molecular weight Mn) of 1 to 20.

Description

technical field [0001] The present invention relates to a method of manufacturing a substrate having on one main surface: a color filter; a patterned metal layer formed directly on the color filter or via a transparent layer; and A covering resin layer covering the patterned metal layer. Background technique [0002] With the rapid spread of smartphones and tablet-type information communication terminals, the touch panel market is growing rapidly. [0003] In such a touch panel, electrodes and wiring made of metal may be formed on the display surface. For example, as such an electrode, a metal mesh electrode using Cu or Ag is mentioned. However, when electrodes and wirings made of metal are formed on the display surface, there is a problem that the user of the touch panel can easily recognize the metal electrodes and metal wirings visually. Even if it is so fine that the human eye cannot visually recognize it, there still arises the following problem: reflection of extern...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/1333G02F1/1335G03F7/20
CPCG02F1/1333G02F1/133514G02F1/133516G03F7/20
Inventor 铃木茂高桥和树
Owner TOKYO OHKA KOGYO CO LTD
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