TFD LCD device with high aperture ratio

Details TFD LCD device with high aperture ratio TFD LCD device with high aperture ratio

2005-09-26

2009-06-09

Qi, Mike (Department: 2871)

Liquid crystal cells, elements and systems

Particular excitation of liquid crystal

Electrical excitation of liquid crystal

C349S051000, C349S139000

Reexamination Certificate

active

07545452

ABSTRACT:
Metal-Insulator-Metal (MIM) diodes in back-to-back thin film diode (TFD) liquid crystal display (LCD) device are formed on dual selective lines respectively. A transparent conductive layer on a first substrate comprises a pixel electrode, a first bottom layer, a second bottom layer, a third bottom layer, and a fourth bottom layer. A semiconductor insulator layer with a first contact hole on the first bottom layer and a second contact hole on the third bottom layer covers the first substrate and the transparent conductive layer. A metal conductive layer comprises a first selective line, a second selective line, a first top layer, and a second top layer, wherein an overlapped region between the first bottom layer and the first top layer is a first MIM diode, an overlapped region between the second bottom layer and the first top layer is a second MIM diode, an overlapped region between the third bottom layer and the second top layer is a third MIM diode, and an overlapped region between the fourth bottom layer and the second top layer is a fourth MIM diode. The first selective line electrically connects to the first bottom layer via the first contact hole, and the second selective line electrically connects to the third bottom layer via the first contact hole. The first and second top layers respectively isolated to the first and second selective lines are in the conformation of the first and second selective lines respectively.

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