Patents by Inventor Seng-Wah Liau
Seng-Wah Liau has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 10446689Abstract: An oxide semiconductor device includes a substrate, a first patterned oxide semiconductor layer, a source electrode, a drain electrode, and a sidewall spacer. The first patterned oxide semiconductor layer is disposed on the substrate. The source electrode and the drain electrode are disposed on the first patterned oxide semiconductor layer. The sidewall spacer is disposed on a sidewall of the first patterned oxide semiconductor layer. The sidewall spacer may be used to improve the performance of blocking impurities from entering the first patterned oxide semiconductor layer via the sidewall, and the electrical performance and the reliability of the oxide semiconductor device may be enhanced accordingly.Type: GrantFiled: February 12, 2019Date of Patent: October 15, 2019Assignee: UNITED MICROELECTRONICS CORP.Inventors: Jen-Po Huang, Chien-Ming Lai, Yen-Chen Chen, Sheng-Yao Huang, Hui-Ling Chen, Seng Wah Liau, Han Chuan Fang
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Patent number: 10446688Abstract: An oxide semiconductor device includes a substrate, a first patterned oxide semiconductor layer, a source electrode, a drain electrode, and a sidewall spacer. The first patterned oxide semiconductor layer is disposed on the substrate. The source electrode and the drain electrode are disposed on the first patterned oxide semiconductor layer. The sidewall spacer is disposed on a sidewall of the first patterned oxide semiconductor layer. The sidewall spacer may be used to improve the performance of blocking impurities from entering the first patterned oxide semiconductor layer via the sidewall, and the electrical performance and the reliability of the oxide semiconductor device may be enhanced accordingly.Type: GrantFiled: November 13, 2018Date of Patent: October 15, 2019Assignee: UNITED MICROELECTRONICS CORP.Inventors: Jen-Po Huang, Chien-Ming Lai, Yen-Chen Chen, Sheng-Yao Huang, Hui-Ling Chen, Seng Wah Liau, Han Chuan Fang
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Patent number: 9966425Abstract: A method for fabricating a metal-insulator-metal (MIM) capacitor includes the steps of: forming a capacitor bottom metal (CBM) layer on a material layer; forming a silicon layer on the CBM layer; forming a capacitor dielectric layer on the silicon layer; and forming a capacitor top metal (CTM) layer on the capacitor dielectric layer.Type: GrantFiled: February 28, 2017Date of Patent: May 8, 2018Assignee: UNITED MICROELECTRONICS CORP.Inventors: Jen-Po Huang, Chin-Fu Lin, Bin-Siang Tsai, Xu Yang Shen, Seng Wah Liau, Yen-Chen Chen, Ko-Wei Lin, Chun-Ling Lin, Kuo-Chih Lai, Ai-Sen Liu, Chun-Yuan Wu, Yang-Ju Lu
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Patent number: 9029265Abstract: A method for forming a semiconductor structure. A dielectric layer including adjacent first and second dielectric regions is formed on a substrate. The dielectric layer includes a curable material. The first dielectric region is cured. A portion of the second dielectric region is etched to form an opening and leave a remaining portion of the second dielectric region. After the etching step, the remaining portion of the second dielectric region is cured.Type: GrantFiled: October 15, 2013Date of Patent: May 12, 2015Assignee: United Microelectronics Corp.Inventors: Sun-Hoi Goh, Seng-Wah Liau, Zhen-Zhen Wang
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Publication number: 20150104943Abstract: A method for forming a semiconductor structure. A dielectric layer including adjacent first and second dielectric regions is formed on a substrate. The dielectric layer includes a curable material. The first dielectric region is cured. A portion of the second dielectric region is etched to form an opening and leave a remaining portion of the second dielectric region. After the etching step, the remaining portion of the second dielectric region is cured.Type: ApplicationFiled: October 15, 2013Publication date: April 16, 2015Applicant: United Microelectronics Corp.Inventors: Sun-Hoi Goh, Seng-Wah Liau, Zhen-Zhen Wang
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Patent number: 8779484Abstract: An image sensor includes a plurality of color filters and an anti-reflective layer. The color filters are located on a substrate. The anti-reflective layer is located between the substrate and the color filters, and parts of the anti-reflective layer corresponding to at least two of the color filters have different thicknesses. Moreover, an image sensing process including the following steps is also provided. An anti-reflective layer is formed on a substrate. A plurality of color filters is formed on the anti-reflective layer, wherein parts of the anti-reflective layer right below at least two of the color filters have different thicknesses.Type: GrantFiled: November 29, 2012Date of Patent: July 15, 2014Assignee: United Microelectronics Corp.Inventors: Xu Yang Shen, Seng Wah Liau, Yuheng Liu, Qin Li, Kiet Houng Chow
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Publication number: 20140145282Abstract: An image sensor includes a plurality of color filters and an anti-reflective layer. The color filters are located on a substrate. The anti-reflective layer is located between the substrate and the color filters, and parts of the anti-reflective layer corresponding to at least two of the color filters have different thicknesses. Moreover, an image sensing process including the following steps is also provided. An anti-reflective layer is formed on a substrate. A plurality of color filters is formed on the anti-reflective layer, wherein parts of the anti-reflective layer right below at least two of the color filters have different thicknesses.Type: ApplicationFiled: November 29, 2012Publication date: May 29, 2014Applicant: UNITED MICROELECTRONICS CORP.Inventors: Xu Yang Shen, Seng Wah Liau, Yuheng Liu, Qin Li, Kiet Houng Chow
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Publication number: 20140087559Abstract: A method for forming a semiconductor structure and a method for patterning a dielectric layer are provided. The method comprises following steps. An upper cap layer is formed on and physically contacted with a dielectric layer. The dielectric layer has a dielectric thickness having a range of 1000 ?˜5000 ?. A patterned mask layer is formed on and physically contacted with the upper cap layer. A part of the upper cap layer is removed to form a patterned upper cap layer by using the patterned mask layer as an etching mask. A part of the dielectric layer is removed to form a dielectric opening in the dielectric layer by using the patterned upper cap layer as an etching mask.Type: ApplicationFiled: September 27, 2012Publication date: March 27, 2014Applicant: UNITED MICROELECTRONICS CORP.Inventors: Xu-Yang Shen, Seng-Wah Liau, Jian-Jun Zhang, Han-Chuan Fang
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Patent number: 8647991Abstract: A method for forming a dual damascene opening includes the following steps. Firstly, a first hard mask layer with a trench pattern is formed over a material layer. Then, a dielectric layer is formed over the first hard mask layer and filled into an opening of the trench pattern. Then, a second hard mask layer with a via opening pattern is formed over the first hard mask layer and the dielectric layer. Then, a first etching process is performed, so that a via opening is at least formed in the dielectric layer. After the second hard mask layer is removed, a second etching process is performed. Consequently, a trench opening is formed in the material layer and the via opening is further extended into the material layer, wherein the via opening is located within the trench opening.Type: GrantFiled: July 30, 2012Date of Patent: February 11, 2014Assignee: United Microelectronics Corp.Inventors: Yu-Heng Liu, Seng-Wah Liau
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Publication number: 20140030885Abstract: A method for forming a dual damascene opening includes the following steps. Firstly, a first hard mask layer with a trench pattern is formed over a material layer. Then, a dielectric layer is formed over the first hard mask layer and filled into an opening of the trench pattern. Then, a second hard mask layer with a via opening pattern is formed over the first hard mask layer and the dielectric layer. Then, a first etching process is performed, so that a via opening is at least formed in the dielectric layer. After the second hard mask layer is removed, a second etching process is performed. Consequently, a trench opening is formed in the material layer and the via opening is further extended into the material layer, wherein the via opening is located within the trench opening.Type: ApplicationFiled: July 30, 2012Publication date: January 30, 2014Inventors: Yu-Heng Liu, Seng-Wah Liau