RESUMO
In this study, a blue photoresist with the hybrid dye-pigment system was developed by mixing xanthene-based dye (XPDIA) and blue pigment 15:6 (1:1, 5 wt% of total mixture amount) in order to develop high-performance image sensors with high thermal and chemical stability. The colorant used in this study has the nano-sized particle of around 100 nm and the physical property is related with the photonic property in image sensor application such as the cameras of mobile phone, car black box, security, etc. The hybrid dye-pigment system showed a high transmittance of more than 90% at 450 nm, and Δab showed very low color difference of 0.52. In solvent resistance, high transmittance of 90% was perfectly maintained, and Δab showed low color difference of 1.08. Migration test result exhibited no change at all after dipping in PGMEA transmittance spectrum. These results are due to the high absorption optical properties of XPDIA dye in the HDPS and the high thermal and chemical stability properties of the PB15:6 pigment. As a result, it was confirmed that the mixed blue hybrid spin coating film exhibited excellent thermal and chemical stability as well as good optical property.
Assuntos
Corantes , Óptica e Fotônica , SolventesRESUMO
New violet colorant, XPDIA was synthesized by using Acid Red 52 to develop a high-performance image sensor. Solubility of XPDIA was more than 5 wt% in PGMEA which is the main solvent in the color filter preparation process. â³Eab value of XPDIA showed a very low color difference of 2.17 after thermal treatment. In solvent resistance, transmittance was not changed and â³Eab showed a low color difference of 1.55 before and after solvent dipping. As a result of the migration test, there was no change at all after dipping in the PGMEA transmittance spectrum. The newly synthesized violet colorant, XPDIA exhibited excellent thermal-chemical stability, and good solubility and it can be applied to image sensor color filter application.
