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Near-infrared-absorbing composition for solid-state imaging device, filter, and solid-state imaging device

A solid-state imaging element and near-infrared technology, which is applied in the direction of electric solid-state devices, optical components, electrical components, etc., can solve the problems of low pigment stability, failure to meet heat resistance or light resistance, etc., and achieve excellent patterning effect

Active Publication Date: 2021-04-13
TOYO INK SC HOLD CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the stability as a pigment is significantly lowered, and heat resistance or light resistance cannot be satisfied

Method used

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  • Near-infrared-absorbing composition for solid-state imaging device, filter, and solid-state imaging device
  • Near-infrared-absorbing composition for solid-state imaging device, filter, and solid-state imaging device
  • Near-infrared-absorbing composition for solid-state imaging device, filter, and solid-state imaging device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0386] The following mixture was uniformly stirred and mixed, and then filtered through a 1.0 μm filter to obtain a photosensitive near-infrared-absorbing composition (R-1).

[0387]

Embodiment 5

[0389] The following mixture was uniformly stirred and mixed, and then filtered through a 1.0 μm filter to obtain a photosensitive near-infrared-absorbing composition (R-5).

[0390]

Embodiment 6

[0392] The near-infrared-absorbing composition was changed to (D-6), the hindered phenolic antioxidant ("IRGANOX 1010" manufactured by BASF) was changed to an epoxy resin ("EX-611" manufactured by Nagase Chemical Co., Ltd.), except Otherwise, it carried out similarly to the photosensitive near-infrared-absorbing composition (R-5), and obtained the photosensitive near-infrared-absorbing composition (R-6).

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PUM

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Abstract

The present invention provides a device that has low absorption in the visible range (400nm to 700nm), has excellent near-infrared absorption performance, has high durability, and can form a fine pattern of less than 10 μm when used in a near-infrared absorption filter for a solid-state imaging device. A near-infrared-absorbing composition for a solid-state imaging device, a near-infrared cut filter for a solid-state imaging device formed of the near-infrared-absorbing composition, and a solid-state imaging device including the near-infrared cut filter. The problem is solved by including: a near infrared absorbing pigment [A] with a specific structure; a resin type dispersant [B1] having an amine value of 20 to 200 (mgKOH / g); and a weight average molecular weight of 5,000 to 40,000, And the solid-state imaging device of the binder resin [C] whose acid value is 130 mgKOH / g or less can be solved using the near-infrared-absorbing composition.

Description

technical field [0001] The present invention relates to a near-infrared-absorbing composition for a solid-state imaging device comprising a specific near-infrared-absorbing dye and a resin-type dispersant, a near-infrared cut filter for a solid-state imaging device comprising the near-infrared-absorbing composition, and Solid-state imaging elements. Background technique [0002] Solid-state imaging devices such as Charge-Coupled Devices (CCD) and Complementary Metal-Oxide-Semiconductors (CMOS) used in digital still cameras and the like have a range from the visible region to Spectral sensitivity in the near-infrared region around 1200nm. Therefore, good color reproducibility cannot be obtained in its own state, and thus the visual sensitivity is corrected using a near-infrared cut filter to which a specific substance that absorbs near-infrared rays is added. [0003] As typical near-infrared absorbing dyes, phthalocyanine-based materials, cyanine-based materials, and diimo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B5/22C09B57/00C09B67/20C09B67/46C09K3/00H01L27/14
CPCC09B57/007H01L27/1462G02B5/208G02B5/223C08F2/50C08F220/26C08K5/0041C08K5/13C08K5/3465C09K3/00G02B5/22H01L27/14C09B47/04C09B57/002G02B5/281
Inventor 原口一道山田和则久保正浩港浩一
Owner TOYO INK SC HOLD CO LTD