Negative photoresist composition, color filter and display device
A negative photoresist composition with specific dyes and resins addresses the issue of low light transmittance in magenta filters, achieving improved performance in liquid crystal display devices.
TWI933799BActive Publication Date: 2026-08-01SUMITOMO CHEM CO LTD
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Patent Information
- Application Number
- TW110110555
- Authority / Receiving Office
- TW · TW
- Patent Type
- Patents
- Current Assignee / Owner
- Priority Date
- 2020-03-31
- Filing Date
- 2021-03-24
- Publication Date
- 2026-08-01
- Estimated Expiration
- 2041-03-23
AI Technical Summary
Technical Problem
Existing magenta color filters in liquid crystal display devices have insufficient light transmittance at a wavelength of 440 nm.
Method used
A negative photoresist composition comprising a colorant and a resin, where the colorant contains dyes with specific spectroscopic properties, achieving high transmittance at wavelengths of 440 nm and 620 nm, and optionally including a polymerizable compound and a polymerization initiator.
Benefits of technology
The composition produces color filters with high light transmittance at 440 nm and 620 nm, enhancing the performance of liquid crystal display devices.
✦ Generated by Eureka AI based on patent content.
Abstract
The present invention provides a negative photoresist composition that can be used to manufacture color filters with high transmittance of light at a wavelength of 440 nm. The negative photoresist composition of the present invention comprises a colorant and a resin, wherein the colorant contains a dye, and the spectroscopic spectrum of the hardened film formed by the negative photoresist composition satisfies the following condition 1. [Condition 1] It has a maximum absorption wavelength in the wavelength range of 500nm to 580nm. When the transmittance of this wavelength is set to 5%, the transmittance of the wavelength 440nm is more than 80%, and the transmittance of the wavelength 620nm is more than 80%.
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