A RED PHOTOSENSITIVE RESIN COMPOSITION A COLOR FILTER AND A DISPLAY DEVICE USING THE SAME

• Main Authors: YANG BYEONG DO, BAE JIN CHUL, KIM SUNG UK, YOO JEONG HO
• Format: Patent
• Language: English; Korean
• Published: 05.09.2022
• Subjects: APPARATUS SPECIALLY ADAPTED THEREFOR; CHEMISTRY; CINEMATOGRAPHY; COMPOSITIONS BASED THEREON; ELECTROGRAPHY; HOLOGRAPHY; MATERIALS THEREFOR; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; ORIGINALS THEREFOR; PHOTOGRAPHY; PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES,e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTORDEVICES; PHYSICS; THEIR PREPARATION OR CHEMICAL WORKING-UP; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS

The present invention relates to a red photosensitive resin composition containing a colorant, an alkali-soluble resin, a photopolymerizable compound, a photopolymerization initiator, an ultraviolet absorber, a polyfunctional thiol compound and a solvent, a color filter prepared using the same, and a display device including the color filter. The colorant includes red colorant. The ultraviolet absorber satisfies the condition that i) when the maximum absorption wavelength in the wavelength range of 270 nm to less than 330 nm is λmax1, and the maximum absorption wavelength in the wavelength range of 330 nm to less than 400 nm is λmax2, absorbance at λmax1/absorbance at λmax2>0.8, and that the absorbance at a wavelength of 365 nm is 0.3 or less when the absorbance of the maximum absorption wavelength (λmax) in the entire wavelength range is normalized to 1. The present invention can improve chemical resistance, undercut characteristics and adhesion of the color filter. 본 발명은 착색제, 알칼리 가용성 수지, 광중합성 화합물, 광중합 개시제, 자외선 흡수제, 다관능 티올 화합물 및 용제를 포함하는 적색 감광성 수지 조성물, 이를 이용하여 제조된 컬러필터, 및 상기 컬러필터를 포함하는 표시장치에 관한 것으로, 상기 착색제는 적색 착색제를 포함하며, 상기 자외선 흡수제는 i) 270 nm 이상 330 nm 미만의 파장범위에서의 극대 흡수 파장을 λmax1, 330 nm 이상 400 nm 미만의 파장범위에서의 극대 흡수 파장을 λmax2라 할 때, λmax1에서의 흡광도 / λmax2에서의 흡광도 > 0.8 및 ii) 전체 파장범위에서의 극대 흡수 파장(λmax)의 흡광도를 1로 정규화했을 때, 365 nm 파장에서의 흡광도가 0.3 이하의 조건을 만족하는 것을 특징으로 한다.