Patent ID: 6087007
Filing Date: 2000-07-11
Classification: B32B,C09K,G02F,Y10T

Abstract:
A photoelectronic element including a heat-resistant transparent electrically conductive substrate, comprising a laminate of a second layer and two first layers on both sides of the second layer, and an electrically conductive layer formed on a side of one of the first layers, the side being opposed to the second layer,said first layer being an optically transparent amorphous polymer obtained by a solvent casting method and having a glass transition temperature of not less than 180.degree. C.,said second layer polymer being an optically transparent amorphous polymer having a glass transition temperature of not less than 140.degree. C. which is lower by not less than 20.degree. C. than that of the glass transition temperature of said first layer polymer,said substrate having a retardation of not more than 50 nm and a ray transmission of not less than 80%.