Company Filing History:
Years Active: 2018-2020
Title: Siguang Ma: Innovator in Image Sensor Technology
Introduction
Siguang Ma is a prominent inventor based in Mountain View, California, known for his contributions to image sensor technology. With a total of four patents to his name, he has made significant advancements in the field, particularly while working at Omnivision Technologies, Inc.
Latest Patents
One of Siguang Ma's latest patents is titled "Source follower contact." This invention describes an image sensor that includes a photodiode made from a first semiconductor material, which absorbs photons and generates image charge. A floating diffusion is also included, positioned to receive the image charge from the photodiode. A transfer transistor is coupled between the photodiode and the floating diffusion, facilitating the transfer of image charge in response to a transfer signal. Additionally, a source follower transistor is connected to the floating diffusion to output an amplified signal of the image charge. The gate terminal of this transistor features a second semiconductor material in contact with the floating diffusion, with a gate oxide partially disposed between the two semiconductor materials.
Another notable patent is for a "Silicon photosensor array integrated circuit on [110] substrate with deep, anisotropically-etched, trench isolation." This method involves fabricating a photosensor array integrated circuit by forming an isolation trench through a series of precise steps, including the use of a hard mask layer and dry plasma etching. The trenches are lined with P-type silicon and filled with tungsten, showcasing innovative techniques in semiconductor fabrication.
Career Highlights
Siguang Ma has established himself as a key figure in the field of image sensors, particularly through his work at Omnivision Technologies, Inc. His innovative patents reflect his expertise and commitment to advancing technology in this area.
Collaborations
Throughout his career, Siguang Ma has collaborated with notable colleagues, including Dajiang Yang and Duli Mao. These collaborations have likely contributed to the successful development of his patents and innovations.
Conclusion
Siguang Ma's work in image sensor technology has led to significant advancements, as evidenced by his patents and contributions at Omnivision Technologies, Inc. His innovative spirit continues to drive progress in the field, making him a noteworthy inventor in the industry.