Non-refrigeration infrared image sensor chip and preparation thereof
An image sensor and uncooled infrared technology, which is applied in the field of infrared image sensor preparation, can solve the problems of sensor unit and lead wire temperature rise, reduce the sensitivity of infrared image sensor, etc., and achieve high yield and low difficulty of the process method.
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[0035] Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:
[0036] The infrared-sensitive resonator is prepared by micro-electro-mechanical system (MEMS) technology. The infrared-sensitive resonator is composed of two layers of materials with different thermal expansion coefficients (CTE), and the infrared-facing layer is a material with good infrared absorption characteristics. The working principle of the infrared sensitive resonator is that an excitation voltage is applied between the electrodes of the resonator and the bottom electrode during operation, so that the resonator is in a resonant state. When the resonant structure is exposed to infrared radiation, the temperature rises, and the difference in thermal expansion coefficient causes stress on the dual material part on the resonator, that is, the Young's modulus of elasticity [E] changes. Since the resonant frequency [ω] is proportional to the ...
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