Photosensitive resin composition, color filter and manufacturing method thereof, and liquid crystal display device

By using a photosensitive resin composition of a triphenylmethane-based colorant within a specific g value range, the pattern linearity of the color filter pixel layer under low exposure is improved, and the problem of insufficient pattern linearity in the prior art is solved, thereby achieving higher precision and energy-saving and carbon reduction effects.

CN120428515APending Publication Date: 2025-08-05CHI MEI CORP
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Patent Information

Application Number
CN202510095515.2
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Priority Date
2024-02-05
Filing Date
2025-01-21
Publication Date
2025-08-05

AI Technical Summary

Technical Problem

The pixel layer pattern formed by the existing color filters at low exposure is poorly linear, especially when the gap between the mask and the coating film is reduced, resulting in insufficient linearity of the exposure pattern.

Method used

Using a photosensitive resin composition containing a triphenylmethane-based colorant, the characteristic peak g value with the greatest intensity in the electron spin resonance spectrum is controlled within the range of 1.8000 to 2.0400. By adjusting the free radical transfer and curing reaction speed, the low exposure linearity of the pattern is improved.

Benefits of technology

The low exposure linearity of the color filter pixel layer pattern is improved to meet the needs of higher precision and energy saving and carbon reduction.

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Abstract

The invention provides a photosensitive resin composition, a color filter and a manufacturing method thereof, and a liquid crystal display device. The photosensitive resin composition includes a colorant (A) including a triphenylmethane colorant (A-1), an alkali-soluble resin (B), a compound (C) having an ethylenically unsaturated group, a photoinitiator (D), and a solvent (E), in which in an electron spin resonance spectrogram of the photosensitive resin composition, a g value corresponding to a characteristic peak with the maximum intensity is 1.8000-2.0400.
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