公开(公告)号：US5844647A

公开(公告)日：1998-12-01

申请号：US796522

申请日：1997-02-07

申请人： Motoshi Maruno ,  Hajime Sato ,  Hirohisa Tanaka

发明人： Motoshi Maruno ,  Hajime Sato ,  Hirohisa Tanaka

IPC分类号： G02F1/136 ,  G02F1/1335 ,  G02F1/1368 ,  H01L21/336 ,  H01L29/786 ,  G02F1/1333

CPC分类号： G02F1/1368 ,  G02F1/133512 ,  G02F2202/104

摘要： In the liquid crystal display element, the light incident upon the poly-crystal silicon serving as an active layer for forming a poly-crystal silicon thin film transistors can be shaded, and further the light leaking through the gaps between the lines and the pixel electrodes can be shaded, so that it is possible to prevent the display performance from being lowered at relatively low cost, without reducing the aperture ratio of the display device. The liquid crystal display device having a transparent insulating substrate (18); pixel electrodes (8) arranged on the insulating substrate in matrix pattern to drive liquid crystal; and poly-crystal silicon thin film transistors (6) each formed on an active layer (21) arranged in correspondence to each pixel electrode (8) to apply voltage to each pixel electrode (8) is characterized in that an amorphous silicon film (19) is formed under the active layer (21) via an insulating film (20) to shade light incident upon the active layer (21) and light leaking through the gaps between the lines (1 and 2) and the pixel electrodes (8).

摘要翻译： 在液晶显示元件中，入射到用作形成多晶硅薄膜晶体管的有源层的多晶硅的光可以被遮蔽，并且进一步通过线和像素电极之间的间隙漏出的光 可以被遮蔽，从而可以在不降低显示装置的开口率的情况下以相对低的成本来防止显示性能的降低。 具有透明绝缘基板（18）的液晶显示装置 以矩阵图案布置在绝缘基板上的像素电极（8）驱动液晶; 以及分别形成在与各像素电极（8）对应配置的有源层（21）上以对每个像素电极（8）施加电压的多晶硅薄膜晶体管（6）的特征在于，非晶硅膜（19） ）通过绝缘膜（20）形成在有源层（21）下方，以遮蔽入射在有源层（21）上的光和通过线（1和2）和像素电极（8）之间的间隙泄漏的光。