摘要:
An active pixel sensor is proposed by the invention. The position of the gate of the reset transistor is kept away from the interface of the isolation region and the silicon so that the depletion region does not reach the isolation. Accordingly, dark currents caused by isolation region damages can be avoided.
摘要:
A method for fabricating a photo diode first involves providing a substrate. A doping area is then formed on the substrate. Afterwards, a dielectric layer, and a first poly-silicon layer are formed on the substrate. An opening is then formed to expose a surface of the doping area. A second poly-silicon layer is formed on the first poly-silicon layer and within the opening. The second poly-silicon layer is patterned to form a wire, while the first poly-silicon layer is patterned to form a gate. Finally, a source/drain is formed.
摘要:
An active pixel sensor is proposed by the invention. The position of the gate of the reset transistor is kept away from the interface of the isolation region and the silicon so that the depletion region does not reach the isolation. Accordingly, dark currents caused by isolation region damages can be avoided.
摘要:
A method for fabricating a photo diode first involves providing a substrate. A doping area is then formed on the substrate. Afterwards, a dielectric layer, and a first poly-silicon layer are formed on the substrate. An opening is then formed to expose a surface of the doping area. A second poly-silicon layer is formed on the first poly-silicon layer and within the opening. The second poly-silicon layer is patterned to form a wire, while the first poly-silicon layer is patterned to form a gate. Finally, a source/drain is formed.
摘要:
A method for fabricating a photo diode first involves providing a substrate. A doping area is then formed on the substrate. Afterwards, a dielectric layer, and a first poly-silicon layer are formed on the substrate. An opening is then formed to expose a surface of the doping area. A second poly-silicon layer is formed on the first poly-silicon layer and within the opening. The second poly-silicon layer is patterned to form a wire, while the first poly-silicon layer is patterned to form a gate. Finally, a source/drain is formed.
摘要:
A method for fabricating a photo diode first involves providing a substrate. A doping area is then formed on the substrate. Afterwards, a dielectric layer, and a first poly-silicon layer are formed on the substrate. An opening is then formed to expose a surface of the doping area. A second poly-silicon layer is formed on the first poly-silicon layer and within the opening. The second poly-silicon layer is patterned to form a wire, while the first poly-silicon layer is patterned to form a gate. Finally, a source/drain is formed.
摘要:
A method of manufacturing a self-aligned guard ring of a photo diode. The method includes defining a photo diode region on a semiconductor substrate and an isolation matter surrounding the photo diode region, forming a photo sensor in the photo diode region, covering a first mask on the photo sensor, forming a spacer around the first mask, covering a second mask on an edge of the isolation matter, and utilizing the first mask, the second mask, and the spacer to form a self-aligned guard ring surrounding the photo sensor.
摘要:
Transistors, methods of manufacturing thereof, and image sensor circuits with reduced random telegraph signal (RTS) noise are disclosed. In one embodiment, a transistor includes a channel disposed between two isolation regions in a workpiece. The channel has edge regions proximate the isolation regions and a central region between the edge regions. The transistor includes a gate dielectric disposed over the channel, and a gate disposed over the gate dielectric. The transistor includes a voltage threshold modification feature proximate the edge regions configured to increase a voltage threshold of the transistor proximate edge regions relative to the central region of the channel.
摘要:
A method of fabricating a complementary metal-oxide-semiconductor image sensor is provided. First, a substrate having a photo sensitive region and a transistor device region is provided. A p type well in the substrate of the transistor device region is formed. A dielectric layer and an un-doped polysilicon layer on the substrate are sequentially formed. A n type polysilicon layer on a first portion of the transistor device region and a p type polysilicon layer on the photo sensitive region and on a second portion of the transistor device region are formed. The dielectric layer, the n type polysilicon layer and the p type polysilicon layer are patterned to form a plurality of n type gate structures and a p type gate structure on the p type well of the transistor device region. A photo sensitive diode is formed in the substrate of the photo sensitive region.
摘要:
A method of generating a gain of an image frame according to a look up table of gain which is set up based on luminance sensitivity of human eyes is proposed. The method includes setting a gain of an image frame to 1, scanning images of a plurality of front rows of the image frame, averaging the images of the plurality of the front rows of the image frame to generate an average value of the images of the plurality of the front rows of the image frame, finding a gain from the look up table of gain according to the average value of the images of the plurality of the front rows of the image frame, and adjusting remaining rows of the image frame according to the gain to generate images of the remaining rows of the image frame.