Patent ID: 8421943
Filing Date: 2013-04-16
Classification: G02F,H01L

Abstract:
1. A display device comprising: a substrate; a pair of gate lines formed over the substrate; a first insulating film formed over the substrate; a data line formed over the first insulating film; a thin film transistor including a semiconductor layer comprising an i-type semiconductor and an impurity doped semiconductor laminated over the first insulating film, a first electrode formed over the semiconductor layer, and a second electrode formed by a part of the data line; a second insulating film formed over the data line and the thin film transistor; a third electrode formed over the second insulating film, and overlapped with one of the pair of gate lines; and a transparent conductive film, being coupled to the data line via an opening formed in the second insulating film, wherein the transparent conductive film, extending from the opening, includes a first portion, and none of the first insulating film and the second insulating film exist between the substrate and the first portion, and wherein, in a cross section of an end portion of the first electrode in a direction of a length of a channel of the thin film transistor, the impurity doped semiconductor is configured to extend a minimum distance of 0.2 μm beyond the first electrode in the direction of the length of the channel, and the i-type semiconductor is configured to extend beyond the impurity doped semiconductor in the direction of the length of the channel.