Patent ID: 9322710
Filing Date: 2016-04-26
CPC Classification: G01J

Claim Text:
1. An optical sensing device, comprising: a plurality of scanning lines, comprising a plurality of first scanning lines and a plurality of second scanning lines; a plurality of sensing lines; a plurality of reading lines; a plurality of optical sensing modules, electrically coupled to corresponding scanning lines, wherein each optical sensing module comprises a first optical sensing unit and a second optical sensing unit, and each of the first optical sensing unit and the second optical sensing unit comprises: a plurality of differential amplifiers, electrically coupled to the reading lines correspondingly, wherein each differential amplifier has two input terminals respectively and electrically coupled to the corresponding reading line in the first optical sensing unit and the corresponding reading line in the second optical sensing unit, and is used for computing an ambient light variation related to the optical sensing module; wherein an equivalent transistor channel width of the plurality of sensing units in the first optical sensing unit is different from an equivalent transistor channel width of the plurality of sensing units in the second optical sensing unit.