HIGH-VOLTAGE GENERATOR FOR SEMICONDUCTOR MEMORY DEVICE ELEMENT

PROBLEM TO BE SOLVED: To provide a high-voltage generator used for semiconductor memory devices, which prevents breakdown of joints resulting from breakdown of gate oxide film of a transistor and improve reliability. SOLUTION: The high-voltage generator includes: a level sensing means which senses a...

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Hauptverfasser:	GU KIHO, KYO BYONSHU, KAN EISEI, KIN KEIEN, BOKU KOJUN, KIN EIHI, BOKU SHOTAI
Format:	Patent
Sprache:	eng
Schlagworte:	APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS CONTROL OR REGULATION THEREOF CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRICITY GENERATION INFORMATION STORAGE PHYSICS STATIC STORES
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a high-voltage generator used for semiconductor memory devices, which prevents breakdown of joints resulting from breakdown of gate oxide film of a transistor and improve reliability. SOLUTION: The high-voltage generator includes: a level sensing means which senses a voltage level of a high-voltage signal and generates a high-voltage enable signal when the voltage level of the high-voltage signal reaches a predetermined target value; an oscillating means of generating a plurality of clocks including first to fourth clocks responding to the high-voltage enable signal; a high-voltage charge pump means of raising a voltage level of an external voltage signal responding to the clock signal and generating a high-voltage signal by a high-voltage node; and a power-on precharge means of initializing the high-voltage node to a predetermined level by responding to a control signal. COPYRIGHT: (C)2011,JPO&INPIT