Image sensor, image capturing system, and production method of image sensor

Abstract

There is provided an imaging device, an electronic apparatus including an imaging device, and an automotive vehicle including an electronic apparatus including an imaging device, including: a first substrate including a first set of photoelectric conversion units; a second substrate including a second set of photoelectric conversion units; and an insulating layer between the first substrate and the second substrate; where the insulating layer has a capability to reflect a first wavelength range of light and transmit a second wavelength range of light that is longer than the first wavelength range of light.

1 . An imaging device, comprising:
 a first pixel unit that converts light of a first wavelength range into a first charge;   a second pixel unit that converts light of a second wavelength range into a second charge; and   a layer,   wherein the first wavelength range includes a shorter wavelength than the second wavelength range,   wherein the layer is formed between the first pixel unit and the second pixel unit in a depth direction,   wherein the layer allows the light of the second wavelength to transmit through, and   wherein a first photoelectric conversion material used in the first pixel unit and a second photoelectric conversion material used in the second pixel unit are different from each other.   
     
     
         2 . The imaging device according to  claim 1 , wherein at least two second pixel units correspond to one first pixel unit. 
     
     
         3 . The imaging device according to  claim 1 , further comprising:
 a first wiring layer between the first pixel unit and the layer in the depth direction; and   a second wiring layer under the second pixel unit in the depth direction.   
     
     
         4 . The imaging device according to  claim 3 , wherein the first wiring layer includes a first wire electrically connected with a second wire of the second wiring layer by a through electrode. 
     
     
         5 . The imaging device according to  claim 1 , wherein the layer comprises a multilayer film. 
     
     
         6 . The imaging device according to  claim 3 , further comprising:
 an optical filter on top of the first pixel unit in the depth direction.   
     
     
         7 . The imaging device according to  claim 3 , further comprising:
 a semiconductor layer under the second wiring layer in the depth direction.   
     
     
         8 . The imaging device according to  claim 1 , wherein the light of the first wavelength range comprises visible light, and wherein the light of the second wavelength range comprises infrared light. 
     
     
         9 . The imaging device according to  claim 1 , further comprising:
 at least one of a logic circuit and a memory circuit.   
     
     
         10 . The imaging device according to  claim 1 , further comprising:
 a control unit that controls an overall drive state of the imaging device.   
     
     
         11 . The imaging device according to  claim 1 , wherein the first pixel unit is formed so as to extend under a plurality of light collection structural elements. 
     
     
         12 . The imaging device according to  claim 11 , wherein the plurality of light collection structural elements are on chip lenses. 
     
     
         13 . The imaging device according to  claim 1 , further comprising:
 a plurality of color filters formed above the first pixel unit, wherein the second pixel unit is formed so as to extend under the plurality of color filters.   
     
     
         14 . An electronic apparatus, comprising:
 an imaging device, comprising:
 a first pixel unit that converts light of a first wavelength range into a first charge; 
 a second pixel unit that converts light of a second wavelength range into a second charge; and 
 a layer, 
 wherein the first wavelength range includes a shorter wavelength than the second wavelength range, 
 wherein the layer is formed between the first pixel unit and the second pixel unit in a depth direction, 
 wherein the layer allows the light of the second wavelength to transmit through, and 
 wherein a first photoelectric conversion material used in the first pixel unit and a second photoelectric conversion material used in the second pixel unit are different from each other. 
   
     
     
         15 . The electronic apparatus according to  claim 14 , wherein at least two second pixel units correspond to one first pixel unit. 
     
     
         16 . The electronic apparatus according to  claim 14 , further comprising:
 a first wiring layer between the first pixel unit and the layer in the depth direction; and   a second wiring layer under the second pixel unit in the depth direction.   
     
     
         17 . The electronic apparatus according to  claim 16 , wherein the first wiring layer includes a first wire electrically connected with a second wire of the second wiring layer by a through electrode. 
     
     
         18 . The electronic apparatus according to  claim 14 , wherein the layer comprises a multilayer film. 
     
     
         19 . The electronic apparatus according to  claim 14 , further comprising:
 an optical filter on top of the first pixel unit in the depth direction.   
     
     
         20 . The electronic apparatus according to  claim 16 , further comprising:
 a semiconductor layer under the second wiring layer in the depth direction.