Formation of colored image

Abstract

Abstract PURPOSE:To obtain a transparent colored image superior in heat and light resistances without using any dye preventing film by exposing a photosensitive polyimide film contg. a pigment specified in size distribution formed on a support, developing it to form a colored image, and repeating it to form images having plural color patterns. CONSTITUTION:The photosensitive polyimide (P1) film 2 contg. a dispersed pigment having a distribution of particles of >=1mum diameter amounting to <=10wt% of the total particles, is formed on the support 1, then, the P1 film 2 is patternwise exposed and developed to form a patternwise colored images 2a (red). When needed, this operation is repeated to form patternwise colored images 2a, 2b (green), and 2c (blue) having plural colors. A transparent electrically conductive film having a prescribed pattern is formed on the support 1 or on the images 2a-2c. It is desirable for obtaining better light transmittance to use the pigment having a size distribution of particles having >=1mum diameter amounting to <=5wt% of the total pigment particles and at the same time, a distribution of paticles having 0.01-0.7mum diameter amounting to >=30wt% of the total particles. As a result of such a constitution, the obtained transparent colored image is superior in heat and light resistances and need not form a dye preventing film.

Inventors

• 👤 Akira Okazaki
• 👤 岡崎　暁

Bibliographic Details