Patent ID: 7064351
Filing Date: 2006-06-20
Classification: G02F,H01L

Abstract:
1. A circuit array substrate, comprising: an optically transparent substrate; a thin-film transistor formed on said transparent substrate having a first semiconductor layer, a gate insulation film and a gate line; and a second semiconductor layer formed on said transparent substrate, wherein said gate line is overlapped with said first and second semiconductor layers through said gate insulation film, and an equation Ca/(Ca+Cb)<Cc/(Cc+Cd) is satisfied, where Ca is a capacitor defined between said first semiconductor layer and a reference potential through said transparent substrate, Cb is a capacitor defined between said first semiconductor layer and said gate line through said gate insulation film, Cc is a capacitor defined between said second semiconductor layer and said reference potential through said transparent substrate, and Cd is a capacitor defined between said second semiconductor layer and said gate line.