Taiwan Semiconductor Manufacturing Comp. Ltd.

Gembedded Tech Ltd.

Chi-Tsai Chen

Wen-Ting Chu

Kuo-Chi Tu

Chih-Yang Chang

Hsia-Wei Chen

Chin-Chieh Yang

Sheng-Hung Shih

Jen-Sheng Yang

Manish Kumar Singh

Chang-Sheng Liao

Yu-Der Chih

Chia-Fu Lee

Meng-Chun Shih

Ching-Huang Wang

Wenhsien Kuo

The present disclosure, in some embodiments, relates to a method of operating a resistive random access memory (RRAM) array. The method includes applying a word-line voltage to a selected word-line during a read operation. A non-zero voltage is applied to a selected bit-line during the read operation. A first voltage is applied to a selected source-line during the read operation. The first voltage is smaller than a second voltage applied to an unselected source-line during the read operation.

Method and apparatus for reading RRAM cell

In some embodiments, the present disclosure relates to a resistive random access memory (RRAM) memory circuit. The memory circuit has a word-line decoder operably coupled to a first RRAM device and a second RRAM device by a word-line. A bit-line decoder is coupled to the first RRAM device by a first bit-line and to the second RRAM device by a second bit-line. A bias element is configured to apply a first non-zero bias voltage to the second bit-line concurrent to the bit-line decoder applying a non-zero voltage to the first bit-line.

In the present disclosure, a non-volatile memory cell comprises a data storage unit, a selection unit and a switching unit. The data storage unit is configured to store an information bit and has a first end and a second end. The first end is coupled to a bit line. The selection unit is configured to access the data storage unit, and the selection unit has a first end coupled to a select line, a second end coupled to the second end of the data storage unit, and a third end coupled to a source line. The switching unit is configured to perform a formation operation and has a first end coupled to a forming line and a second end coupled to the second end of the data storage unit.

Non-volatile memory device and structure thereof

The present disclosure relates to a method and apparatus for performing a read operation of an RRAM cell, which applies a non-zero bias voltage to unselected bit-lines and select-lines to increase a read current window without damaging corresponding access transistors. In some embodiments, the method may be performed by activating a word-line coupled to a row of RRAM cells comprising a selected RRAM device by applying a first read voltage to the word-line. A second read voltage is applied to a bit-line coupled to a first electrode of the selected RRAM device. One or more non-zero bias voltages are applied to bit-lines and select-lines coupled to RRAM cells, within the row of RRAM cells, having unselected RRAM devices.

A single-poly NVM cell includes a substrate having an isolation region separating a first OD region from a second OD region, a read transistor within the first OD region, and a coupling capacitor within the second OD region. A first ion well completely overlaps with the first oxide define region. The read transistor includes a drain region, a source region, a channel region, a single-poly floating gate overlying the channel region, and a gate dielectric layer between the floating gate and the channel region. The coupling capacitor includes a shallow ion well, a heavily-doped, ultra-shallow dopant region in the shallow ion well, a single-poly charge-storage floating gate overlying the heavily-doped, ultra-shallow dopant region, and a gate dielectric layer under the charge storage floating gate. The shallow ion well has a junction depth that is substantially equal to or shallower than a trench depth of the isolation region.

Single-poly non-volatile memory cell

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Taichung, Taiwan

Chi-Tsai Chen