Patent ID: 9698180
Date: 2017-07-04
CPC Classifications: G02F,G06F,H01L

Claim:
1. A method of fabricating an optical sensor device and a thin film transistor device, comprising: providing a substrate, the substrate having a switching device region and an optical sensor device region; forming a first patterned metal layer on the substrate, wherein the first patterned metal layer comprises a common line, a gate electrode disposed in the switching device region, and a bottom electrode disposed in the optical sensor device region; forming a first insulating layer on the first patterned metal layer, the first insulating layer covering the gate electrode, and the first insulating layer at least partially exposing the bottom electrode; forming an optical sensing pattern on the bottom electrode; forming a patterned transparent semiconductor layer on the first insulating layer, wherein the patterned transparent semiconductor layer comprises a first transparent semiconductor pattern covering the gate electrode, and a second transparent semiconductor pattern covering the optical sensing pattern; forming a second patterned metal layer on the patterned transparent semiconductor layer, wherein the second patterned metal layer comprises a connection electrode connected to the common line, and a source electrode and a drain electrode partially covering the first transparent semiconductor pattern respectively, and the second patterned metal layer at least partially exposes the second transparent semiconductor pattern; and performing a modification process on the second transparent semiconductor pattern, the modification process comprising introducing at least one gas to transfer the second transparent semiconductor pattern into a transparent top electrode with electrical conductibility; and forming a second insulating layer and a first patterned transparent conductive layer sequentially on the second patterned metal layer, wherein the second insulating layer and the first patterned transparent conductive layer at least partially exposes the transparent top electrode; and forming a third insulating layer and a second patterned transparent conductive layer sequentially on the first patterned transparent conductive layer, wherein the third insulating layer and the second patterned transparent conductive layer expose the transparent top electrode, the first patterned transparent conductive layer comprises a first electrode, the second patterned transparent conductive layer comprises a second electrode, one of the first electrode and the second electrode is connected to the drain electrode, and the other one of the first electrode and the second electrode is connected to the connection electrode.