A few days later, Yang Jie returned to Tanzhou City, and as soon as he came back, he went directly to the laboratory building of Loongson Semiconductor Company.

"Yang Shao, this is a new idea based on the stacking skills you proposed, the image sensor has been redesigned, we will be close to the image sensor component of the circuit part of the blue print needs to be placed under the light sensor, this practice can make the whole component in the same size specifications to get more space to obtain a larger area of the light field, the previous large size of the image sensor due to the overall area is too large, need to add a substrate under the component to support the whole chip, after the use of this structure can cancel this substrate, greatly reduce the complexity of the component production。 ”

Han Chengmin, who is in charge of image sensor research and development, said that he is about 50 years old, and has been in charge of the research and development of CMOS image sensors at Yenching University, and also joined Loongson Semiconductor Company the year before last as the chief scientist.

After Han Chengmin joined the team, he proposed this technical plan, which was also approved by Yang Jie, and after more than a year of design and development, it is now also tape-out.

After the technical team passed the test, a large number of data were obtained, which confirmed that this chip has a lower signal-to-noise ratio, better image quality performance and even better depth of field performance due to the new technology in the larger photosensitive field, and this process improvement also brings positive sponsorship to the enhancement of dynamic field performance, and the image sensor has a faster processing speed and greatly reduced power consumption.

"Yang Shao, we need to optimize the circuit in the next step, and we can get a higher processing speed, so that we can get at least 60 frames per second. ”

Han Chengmin said.

"Well, your skill line is right, and in order to improve the acuity of the image sensor, my idea is that in the pixel coding skills, you can add a white sub-pixel to form the level of RGBOS process cost.

Since the 60s of the last century, the semiconductor industry has been pursuing Moore's Law, but the characteristic size of silicon crystals reaches the ultimate limit of atomic size in the material, and finally only a few of the world's largest and well-equipped semiconductor manufacturers can develop chips based on smaller geometries.

At that time, silicon products will continue to exist, the automotive electronics and Internet of Things equipment market, the mobile phone industry still needs standard chips and faster chips, and more new materials and new processes will be adopted, and gallium nitride, graphene These materials are also one of the seed players.

When the time comes, it will be up to who has a major breakthrough in these materials.

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