Light-sensing apparatuses, methods of driving the light-sensing apparatuses, and optical touch screen apparatuses including the light-sensing apparatuses

摘要

A light-sensing apparatus in which a light sensor transistor in a light-sensing pixel is formed of an oxide semiconductor transistor for sensing light, a method of driving the light-sensing apparatus, and an optical touch screen apparatus including the light-sensing apparatus. The light-sensing apparatus includes a light-sensing pixel array having a plurality of light-sensing pixels arranged in rows and columns, and a plurality of gate lines which are arranged in a row direction and respectively provide a gate voltage to the light-sensing pixel. Each of the light-sensing pixels includes a light sensor transistor for sensing light and a switch transistor for outputting a light-sensing signal from the light sensor transistor, and gates of the light sensor transistors of the light-sensing pixels arranged in an arbitrary row are connected to a gate line arranged in a row previous or next to the arbitrary row.

主权项

1. A light-sensing apparatus, comprising:
a light-sensing pixel array including a plurality of light-sensing pixels in a plurality of rows and a plurality of columns, each of the light-sensing pixels including a light sensor transistor configured to sense light and a switch transistor configured to output a light-sensing signal from a source of the light sensor transistor; and a plurality of gate lines configured to apply a gate voltage to the light-sensing pixels, a gate of the light sensor transistor in a first row of the plurality of rows being connected directly to a gate line in a second row of the plurality of rows, wherein the switch transistor and the light sensor transistor are connected in series, and a drain of the light sensing transistor is connected to a driving voltage line.