Semiconductor device for rectifying memory defects

Details Semiconductor device for rectifying memory defects Semiconductor device for rectifying memory defects

2007-07-03

2007-07-03

Zarabian, Amir (Department: 2827)

Static information storage and retrieval

Read/write circuit

Bad bit

C365S201000, C714S729000

Reexamination Certificate

active

10989550

ABSTRACT:
The present invention provides a high-capacity and reliable semiconductor device which does not require additional circuits for use at power ON/OFF, additional steps nor high manufacturing cost, and which has a rectifier means for rectifying a defect easily. A semiconductor device comprises a first memory means including a memory cell and a redundant memory cell each including a memory element in the region where a bit line and a word line cross each other with an insulator interposed therebetween, a second memory means for storing an address of a defective memory in the first memory means, a rectifier means including a holding means and a replacement means, and an inspection means for writing data of the second memory means to the holding means. The replacement means replaces the defective memory cell with the redundant memory cell. In addition to the aforementioned four means, a display means for displaying images is provided as well.

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“Eight Character 5.0 mm (0.2 inch) Glass/Ceramic Intelligent 5×7 Alphanumeric Displays for Military Applications, Technical Data”, Jul. 19, 2004, Agilent Technologies.

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