Digital products market is currently at an alarming rate growth with the rapid development of digital technology, semiconductor manufacturing technology and network, composed of key parts of the video, audio and video products - image sensor (Sensor) to become the industry's current
The eyes are the visual image sources, while the image sensor device is the image of the video capture device accepts general there are two types: linear image sensor and face image sensor, image sensor morphological classification. Linear image sensor is used in scanners, copiers, fax machines, and other equipment; the face image sensor, a wide range of applications in the security monitoring camera, cell phone camera, car reversing video camera, tablet computers and other well-known products. Speaking of image sensor CCD and CMOS chip two early we usually think equipment with excellent image quality CCD sensor, and low-cost products use a CMOS sensor. The new CMOS chip technology has overcome the weaknesses of the early CMOS sensor technology, compared to the old products to enhance the performance of low according to the design of the sensor, such as exposure mode. Take the popular back-illuminated CMOS sensor, in the conventional CMOS image sensor, the light-sensitive diode is located in the rear of the circuit transistor, the light through the circuit between the micro-lens and the photodiode and the transistor, then the amount of light will be due to obstructions affected. Back-illuminated CMOS sensor on the internal structure of the original image sensor optimized, it photosensitive layer of the original reverses direction, so that the light from the back directly into the chip to increase the amount of light, so the back-illuminated CMOS image sensor than conventional CMOS qualitative leap sensor light sensitivity in low light conditions, the use of back-illuminated CMOS sensor HD network camera with a great ability to focus, the image quality performance, image noise control performance boost.