Patent ID: 6998287
Filing Date: 2006-02-14
Classification: G02F,H01L

Abstract:
1. A method for fabricating a polysilicon liquid crystal display (LCD) device, comprising: forming a buffer layer on a substrate; forming an active layer having at least one opening in the buffer layer for serving as a heat releasing part; forming a first, insulation layer on the active layer; forming a gate line on the first insulation layer; forming a second insulation layer on the gate line; forming at least one hole as a heat releasing path in an opening of the second insulation layer; forming at least one contact hole in the second insulation layer; forming source and drain electrodes connected to the active layer through the contact hole; and forming a passivation layer in the hole to connect to the buffer layer along the heat releasing path, wherein forming the heat releasing path and the contact hole in the second insulation layer comprises: forming a photoresist film on the second insulation layer; forming a heat-releasing-path forming region by partially removing the photoresist film to expose the second insulation layer; forming a contact-hole forming region by diffraction-exposing the photoresist film; removing the exposed second insulation layer and the diffraction-exposed photoresist film; and removing portions of the buffer layer and the first insulation layer that correspond to the heat-releasing-path forming region.