Lg Semicon Co., Ltd.

Hyundai Electronics Industries Co. Ltd.

Ha Zoong Kim

A Time Dependent Dielectric Breakdown (TDDB) test pattern circuit, which can reduce testing time and statistically improve a precision of measurement as well as a method for testing the test pattern circuit are discussed. Typically, a test pattern circuit includes in plurality of unit test patterns. Each unit test pattern includes a capacitor connected to a stress voltage. The stress voltage is applied to the capacitor and the current flowing from the capacitor is measured over time. The dielectric in the capacitor breaks down over time and at a certain point, the current from the capacitor changes suddenly. Unfortunately, the convention test pattern circuit requires serial testing of each unit cell, and therefore, the measuring time is significant when there are many unit cells involved. The circuit allows for the measurements to take place simultaneously for all unit cells within the test pattern circuit. This greatly reduces the testing time, allows for greater amount of data to be obtained which improves the statistically accuracy, and reduces costs as well.

TDDB test pattern and method for testing TDDB of MOS capacitor dielectric

A semiconductor device and method of manufacturing the semiconductor device including a semiconductor substrate of a first conductivity type. A scribe lane area formed in the substrate to define chip formation areas. A deep well area formed in each chip formation area. The deep well area has a second conductivity type which is opposite the first conductivity type. Also, at least one well area is formed within the deep well area.

Semiconductor device for reducing plasma charging damage

Semiconductor device and method for manufacturing the same

TDDB test pattern which can reduce a test time period and improve a precision of a measurement result statistically; and a method for testing TDDBs of MOS capacitor dielectric films using the same, the TDDB test pattern including a plurality of unit test pattern cells each having an MOS capacitor, an MOS transistor, and a fuse for controlling operations of the MOS capacitor and the MOS transistor, a first voltage supplying unit for supplying a stress voltage to the MOS capacitor and the MOS transistor in each unit test pattern cell on the same time, an ammeter for continuous measurement of a total current from the plurality of unit test pattern cells, to measure a total time to breakdown of the plurality of unit test pattern cells, a plurality of VFN's (Voltage Forcing Nodes) each positioned between the first voltage supplying unit and the fuse in the unit test pattern cell, a DCMN (Drain Current Measuring Node) positioned between the ammeter and a drain terminal of the MOS transistor in each of the plurality of unit test pattern cells, and a second voltage supplying unit for applying a voltage to the drain terminal of the MOS transistor.

Growing community of inventors

Kyonggi-do, South Korea

Ha Zoong Kim