公开(公告)号：US20140239159A1

公开(公告)日：2014-08-28

申请号：US14017916

申请日：2013-09-04

Applicant: AU Optronics Corp.

Inventor： Yung-Da CHEN ,  Yueh-Hung CHUNG

IPC: G01J1/44

CPC classification number: G01J1/4204 ,  G01J1/46

Abstract: An optical sensing device includes a plurality of scanning lines having a plurality of first scanning lines and a plurality of second scanning lines, a plurality of sensing lines, a plurality of reading lines, and a plurality of optical sensing modules electrically connected to the scanning lines. Each optical sensing module includes a first optical sensing unit and a second optical sensing unit, each of which includes a sensing unit, a charge storage unit, and a reading unit. The optical sensing module further includes a plurality of differential amplifiers electrically connected to the corresponding reading lines, for determining the difference between the reading lines, wherein the difference indicates the ambient light variation. A first transistor of the sensing unit of the first optical sensing unit is different to a first transistor of the sensing unit of the second sensing unit in channel width.

Abstract translation: 一种光学感测装置，包括具有多个第一扫描线和多个第二扫描线的多条扫描线，多条感测线，多条读取线以及与扫描线电连接的多个光学感测模块 。 每个光学感测模块包括第一光学感测单元和第二光学感测单元，每个单元包括感测单元，电荷存储单元和读取单元。 光学传感模块还包括电连接到对应读取线的多个差分放大器，用于确定读取线之间的差异，其中差值表示环境光的变化。 第一光学感测单元的感测单元的第一晶体管与通道宽度中的第二感测单元的感测单元的第一晶体管不同。