Integrated circuit for e.g. camera, has photodiode delivering electrical signal when it is attained by wavelength of visible spectrum, and electro-optical system including optical property modified by electrical control

摘要

#CMT# #/CMT# The circuit (1) has a photodiode (2) delivering an electrical signal when the photodiode is attained by a wavelength of visible spectrum, where the photodiode comprises polymorphous or amorphous hydrated silicon. An electro-optical system (20) is situated on a path of light rays reaching the photodiode and has an optical property e.g. transmission co-efficient, modified by an electrical control. The system filters 80 percent of large wavelength from the visible spectrum. #CMT# : #/CMT# An independent claim is also included for a method for forming an integrated circuit. #CMT#USE : #/CMT# Used for camera or digital sensor. #CMT#ADVANTAGE : #/CMT# The integrated circuit allows filtering wave lengths that provoke degradation of the photodiode, and improves the sensitivity and life duration of the photodiode. The design of the integrated circuit ensures detecting the image in a continuous manner while reducing the damage to the integrated circuit. The integrated circuit avoids a need for disposing glass substrate on both sides of the electro-optical system for ensuring its rigidity, thus reducing the weight and the encumbrance of the electro-optical system. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The drawing shows a sectional view of an integrated circuit. `(Drawing includes non-English language text)` 1 : Integrated circuit 2 : Photodiode 3 : Reference photodiode 4 : Conducting layer 5 : polymorphous or amorphous hydrated silicon layer 20 : Electro-optical system 30 : Interconnecting region 31, 33, 34 : Conductors #CMT#INORGANIC CHEMISTRY : #/CMT# The electro-optical system has an electro-optical material comprising tungsten oxide, and an electrolyte comprising a hydrated tantalum oxide layer.