Patent ID: 8003987
Filing Date: 2011-08-23
Classification: G02F

Abstract:
1. A reflection type liquid crystal display apparatus comprising: a light transmitting substrate having a light transmitting electrode; and a first conduction type semiconductor substrate arranged in opposition to the light transmitting substrate sandwiching a liquid crystal between the light transmitting substrate and the first conduction type semiconductor substrate, and having a plurality of pixel electrodes arranged in a matrix, wherein the first conduction type semiconductor substrate has a pixel including a first semiconductor region which has a second conduction type being opposite to the first conduction type and acts as a main electrode region of a switch element electrically connected to the pixel electrodes, and a second semiconductor region which has the second conduction type and is provided separately from the switch element, and wherein the first semiconductor region is configured such that a voltage for an alternating current drive which has a reference value between a maximum voltage and a minimum voltage is applied to the first semiconductor region, a majority carrier of the second conduction type is an electron, and the second semiconductor region is configured such that a voltage higher than the reference value is applied to the second semiconductor region.