Patent ID: 7777230
Filing Date: 2010-08-17
Classification: G02F,H01L

Abstract:
1. A display device comprising: a substrate; thin film transistors which are formed on the substrate; gate signal lines; gate electrodes which are connected to the gate signal lines; semiconductor layers each of which is formed across the gate electrodes by way of an insulation film, each semiconductor layer being formed into a polysilicon layer by radiation of laser beams; a contact layer having a high impurity concentration and being formed above the semiconductor layers; drain signal lines; drain electrodes each of which is connected with the drain signal lines and is formed on the semiconductor layers by way of the contact layer; and source electrodes each of which is formed on the semiconductor layers by way of the contact layer in a state that a side of the source electrodes faces a side of the drain electrodes in an opposed manner, wherein a first side of the contact layer is formed between the semiconductor layers and the drain electrodes and does not overlap the gate electrodes as viewed in a plan view, and a first side of the contact layer is formed between the semiconductor layers and the source electrodes and does not overlap the gate electrodes as viewed in a plan view.