LIQUID CRYSTAL DISPLAY DEVICE

PURPOSE:To prevent the respective electrodes of thin-film transistors (TETRs) from being damaged by spacers by constituting a surface protective film of two layers; an insulating film and a film having the hardness higher than the hardness of the insulating film. CONSTITUTION:The liquid crystal disp...

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Bibliographische Detailangaben
1. Verfasser:	NOMOTO TSUTOMU
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:	PURPOSE:To prevent the respective electrodes of thin-film transistors (TETRs) from being damaged by spacers by constituting a surface protective film of two layers; an insulating film and a film having the hardness higher than the hardness of the insulating film. CONSTITUTION:The liquid crystal display device is formed with the TFTRs, matrix electrodes and the insulating film 12 consisting of SiNx so as to cover the surface of the respective constituting elements of picture element electrodes 11. The film 13 having the hardness higher than the hardness of the insulating film 12 is formed on the insulating film 12. The surface protective film is constituted of the insulating film 12 and the high-hardness film 13. The material to form the high-hardness film 13 is preferably exemplified by silicon carbide (SiC) or tantalum oxide (TaOx). An oriented film 14 consisting of a polyimide film subjected to a rubbing treatment is provided to cover the insulating film 12 and the high-hardness film 13. Then, the respective electrodes of the TFTRs are substantially prevented from being damaged by the spacers even if the spacers 3 are positioned on the TFTRs. The liquid crystal display device which has decreased display defects and excellent display quality is obtd.