Taiwan Semiconductor Manufacturing Comp. Ltd.

Hsia-Wei Chen

Wen-Ting Chu

Yu-Wen Liao

Chih-Yang Chang

Chin-Chieh Yang

Kuo-Chi Tu

Sheng-Hung Shih

Wen-Chun You

Jen-Sheng Yang

Fa-Shen Jiang

Hai-Dang Trinh

Hsun-Chung Kuang

I-Ching Chen

Ching-Pei Hsieh

Tung-Sheng Hsiao

Cheng-Yuan Tsai

Fu-Ting Sung

Manish Kumar Singh

Chang-Sheng Liao

Chi-Tsai Chen

Harry-Hak-Lay Chuang

Hung Cho Wang

Feng-Jia Shiu

Chin-Wei Liang

Ching-Sen Kuo

Kuei-Hung Shen

Chih-Hsiang Chang

Wei-Chieh Huang

Jieh-Jang Chen

Chih-Hung Pan

Tzu-Hsuan Yeh

Shih-Chang Liu

Chih-Ming Chen

Hsing-Lien Lin

Chang-Ming Wu

Tzu Chung Tsai

Yan-Chi Chen

Various embodiments of the present disclosure are directed towards a memory device. The memory device has a first transistor having a first source/drain and a second source/drain, where the first source/drain and the second source/drain are disposed in a semiconductor substrate. A dielectric structure is disposed over the semiconductor substrate. A first memory cell is disposed in the dielectric structure and over the semiconductor substrate, where the first memory cell has a first electrode and a second electrode, where the first electrode of the first memory cell is electrically coupled to the first source/drain of the first transistor. A second memory cell is disposed in the dielectric structure and over the semiconductor substrate, where the second memory cell has a first electrode and a second electrode, where the first electrode of the second memory cell is electrically coupled to the second source/drain of the first transistor.

Circuit design and layout with high embedded memory density

A memory device includes a bottom electrode, a buffer element, a metal-containing oxide portion, a resistance switch element, and a top electrode. The buffer element is over the bottom electrode. The metal-containing oxide portion is over the buffer element, in which the metal-containing oxide portion has a same metal material as that of the buffer element. The resistance switch element is over the metal-containing oxide portion. The top electrode is over the resistance switch element.

Memory device with bottom electrode

A memory device includes a field effect transistor and a variable-capacitance capacitor. A gate structure includes a gate dielectric and an intermediate electrode. The variable-capacitance capacitor includes a lower capacitor plate comprising the intermediate electrode, an upper capacitor plate comprising a control gate electrode, and a variable-capacitance node dielectric and including an electrical-field-programmable metal oxide material. The electrical-field-programmable metal oxide material provides a variable effective dielectric constant, and a data bit may be stored as a dielectric state of the variable-capacitance node dielectric in the memory device. The variable-capacitance node dielectric provides reversible electrical field-dependent resistivity modulation, or reversible electrical field-dependent movement of metal atoms therein.

Threshold voltage-modulated memory device using variable-capacitance and methods of forming the same

An integrated circuit device includes an interconnect layer, a memory structure, a third conductive feature, and a fourth conductive feature. The interconnect layer includes a first conductive feature and a second conductive feature. The memory structure is over and in contact with the first conductive feature. The memory structure includes at least a resistance switching element over the first conductive feature. The third conductive feature, including a first conductive line, is over and in contact with the second conductive feature. The fourth conductive feature is over and in contact with the memory structure. The fourth conductive feature includes a second conductive line, a top surface of the first conductive line is substantially level with a top surface of the second conductive line, and a bottom surface of the first conductive line is lower than a bottommost portion of a bottom surface of the second conductive line.

Integrated circuit device

Various embodiments of the present application are directed towards an integrated chip comprising memory cells separated by a void-free dielectric structure. In some embodiments, a pair of memory cell structures is formed on a via dielectric layer, where the memory cell structures are separated by an inter-cell area. An inter-cell filler layer is formed covering the memory cell structures and the via dielectric layer, and further filling the inter-cell area. The inter-cell filler layer is recessed until a top surface of the inter-cell filler layer is below a top surface of the pair of memory cell structures and the inter-cell area is partially cleared. An interconnect dielectric layer is formed covering the memory cell structures and the inter-cell filler layer, and further filling a cleared portion of the inter-cell area.

Method to form memory cells separated by a void-free dielectric structure

A method for fabricating an integrated circuit device is provided. The method includes forming an interconnect layer over a substrate, wherein the interconnect layer has a first interlayer dielectric layer, a first conductive feature in a first portion of the first interlayer dielectric layer, and a second conductive feature in a second portion of the first interlayer dielectric layer; depositing a dielectric layer over the interconnect layer; removing a first portion of the dielectric layer over the first conductive feature and the first portion of the first interlayer dielectric layer, and remaining a second portion of the dielectric layer over the second conductive feature and the second portion of the first interlayer dielectric layer; and forming a memory structure over the first conductive feature.

Method for fabricating integrated circuit device

The present disclosure, in some embodiments, relates to an integrated chip. The integrated chip includes a first interconnect within a first inter-level dielectric (ILD) layer over a substrate. A memory device is disposed over the first interconnect and is surrounded by a second ILD layer. A sidewall spacer is arranged along opposing sides of the memory device and an etch stop layer is arranged on the sidewall spacer. The sidewall spacer and the etch stop layer have upper surfaces that are vertically offset from one another by a non-zero distance. A second interconnect extends from a top of the second ILD layer to an upper surface of the memory device.

Interconnect landing method for RRAM technology

A resistive random access memory (RRAM) structure includes a resistive memory element formed on a semiconductor substrate. The resistive element includes a top electrode, a bottom electrode, and a resistive material layer positioned between the top electrode and the bottom electrode. The RRAM structure further includes a field effect transistor (FET) formed on the semiconductor substrate, the FET having a source and a drain. The drain has a zero-tilt doping profile and the source has a tilted doping profile. The resistive memory element is coupled with the drain via a portion of an interconnect structure.

Resistive switching random access memory with asymmetric source and drain

Various embodiments of the present application are directed towards a method for forming a flat via top surface for memory, as well as an integrated circuit (IC) resulting from the method. In some embodiments, an etch is performed into a dielectric layer to form an opening. A liner layer is formed covering the dielectric layer and lining the opening. A lower body layer is formed covering the dielectric layer and filling a remainder of the opening over the liner layer. A top surface of the lower body layer and a top surface of the liner layer are recessed to below a top surface of the dielectric layer to partially clear the opening. A homogeneous upper body layer is formed covering the dielectric layer and partially filling the opening. A planarization is performed into the homogeneous upper body layer until the dielectric layer is reached.

Flat bottom electrode via (BEVA) top surface for memory

Memory cells separated by a void-free dielectric structure

Growing community of inventors

Taipei, Taiwan

Hsia-Wei Chen