Patent ID: 7671365

Claim:
A reflection type liquid crystal display apparatus comprising: a light transmitting substrate having a light transmitting electrode; and a first conduction type semiconductor substrate being 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 semiconductor substrate has a pixel including a first semiconductor region which acts as a main electrode region of a switch element electrically connected to the pixel electrodes and which has a second conduction type being opposite to the first conduction type, and a second semiconductor region which has the second conduction type, and when the unit electric charge of a second conduction type majority carrier, in the first and second type semiconductor regions, is defined as Q, the product of the voltage of the second semiconductor region and the Q is smaller than the product of the voltage of the first semiconductor region and the Q.