Hyundai Electronics Industries Co. Ltd.

Shin & Kim

Tae Kyu Kim

Jong Woo Kim

Min Kyu Kim

Ju Yeab Lee

Sheung Hee Park

Jum Soo Kim

Mun Hwa Lee

There is disclosed a method of fabricating a piezoelectric ceramics. It can obtain a small grain size and a fine grain phase by forming a combined powder being major components, stirring the combined powder with (COOH) water solution, dropping a Pb(NO ) water solution into the stirred powder, and forming a PZT powder by calcinations and sintering processes.

Method of fabricating a piezoelectric ceramic

There is disclosed a method of improving an electrostatic discharge (&ldquo;ESD&rdquo;) characteristic in a flash memory device. In order to prevent generation of leak current caused when charges generated upon a testing of the ESD are introduced into an internal circuit, the prevent can prevent a current fail in the internal circuit, by connecting a drain junction power supply terminal and a ground terminal line, in the connection of an internal circuit and a SDA input buffer in a flash memory device, to connection terminals spaced apart to each other.

Method of improving an electrostatic discharge characteristic in a flash memory device

There is disclosed a method of programming a flash memory cell, which is performed applying a given voltage a gate and a drain and maintaining a source and a substrate at a ground potential. The method variably applies a given voltage, with two or more steps, to one of the gate and drain terminals while applying a given voltage to the other of the gate and drain terminals, thus reducing the programming current per cell. Accordingly, the present invention can improve reliability and throughput of the flash memory cell.

Method of programming a flash memory cell

Growing community of inventors

Ichon, South Korea

Tae Kyu Kim