LIQUID CRYSTAL DISPLAY DEVICE

PROBLEM TO BE SOLVED: To improve an aperture ratio by increasing auxiliary capacitance and also downsizing a capacitance electrode in an active matrix type liquid crystal display device. SOLUTION: The active matrix type liquid crystal display device comprises TFTs arranged in a matrix form and auxil...

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Bibliographische Detailangaben
Hauptverfasser:	HIROTA SHIRO, MAJIMA NIWAJI
Format:	Patent
Sprache:	eng
Schlagworte:	BASIC ELECTRIC ELEMENTS DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH ISMODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THEDEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY,COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g.SWITCHING, GATING, MODULATING OR DEMODULATING ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR ELECTRICITY FREQUENCY-CHANGING NON-LINEAR OPTICS OPTICAL ANALOGUE/DIGITAL CONVERTERS OPTICAL LOGIC ELEMENTS OPTICS PHYSICS SEMICONDUCTOR DEVICES TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To improve an aperture ratio by increasing auxiliary capacitance and also downsizing a capacitance electrode in an active matrix type liquid crystal display device. SOLUTION: The active matrix type liquid crystal display device comprises TFTs arranged in a matrix form and auxiliary capacitance, and the TFT is provided with a gate electrode on the substrate, a gate insulating film covering the gate electrode, an operating layer on the gate insulating film, a source electrode and a drain electrode on the operating layer, and a protective film covering the source electrode and the drain electrode, and is constituted of an auxiliary capacitance electrode made of the same material as the gate electrode, a pixel electrode connected with the source electrode in an area where the protective film on the source electrode is removed, and a dielectric made of the same material as the gate insulating film.