Oxime ester compound, photopolymerizable composition and color filter using the same

Abstract

An oxime ester compound of specified structure. In particular, in a photopolymerizable composition comprising (a) black color material, (b) organic binder and (c) photopolymerization initiator, the oxime ester compound constitutes the component (c). The oxime ester compound can be used as a highly sensitive photopolymerization initiator. The photopolymerizable composition containing the oxime ester compound in the form of a thin film excels in sensitivity and resolving power while exhibiting high light shielding capability, so that it is capable of forming a resin black matrix (BM) of low cost but high quality. The color filter utilizing this resin BM excels in precision, flatness and durability, so that it is capable of enhancing the display quality of liquid crystal device. Moreover, the production process and color filter per se do not involve any hazardous substances, so that the danger to human body can be reduced and environmental safety can be enhanced. Application thereof can be made to usages in which no color material is used, such as photospacer and rib (liquid crystal divided-alignment protrusion).

Description

This application is a divisional application. The international application number of the original application is PCT / JP2005 / 002818, the Chinese national application number is 200580005604.4, and the application date is February 22, 2005. The invention name is "oxime ester compound, photopolymerizable combination objects and color filters using the composition". technical field The present invention relates to an oxime ester compound used as a photopolymerization initiator and a photopolymerizable composition containing the oxime ester compound. More specifically, the present invention is effective for photopolymerizable compositions for color filters used in the manufacture of, for example, color televisions, liquid crystal displays, Optical color filters for solid-state image sensors, cameras, etc.; The present invention relates to a photopolymerizable composition for color filters, which is suitable for producing a black matrix (black matrix, hereinafter abbreviated as BM...

AI Technical Summary

Problems solved by technology

However, since the method is complicated and the adhesion will be reduced due to the accumulation of twists when the film shrinks, it is difficult to use this resin practically.

Therefore, there is a problem that it is obviously contradictory to carry out the photoreaction under light-shielding conditions that originally conflict with the photoreaction, so it is difficult to realize a practical resin BM

However, the image characteristics required for resin BM, that is, sensitivity and resolution, cannot be improved merely by replacing the initiator (such as bisimidazole or triazine initiator) used for conventional resin BM with an oxime compound.

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