Light detection device and electronic equipment

Abstract

To make it possible to suppress color mixture and shading when fine structures are used.SOLUTION: A light detection device includes: a photoelectric conversion region having a plurality of pixels; a light control region that is arranged on a light incident direction side with respect to the photoelectric conversion region and has a fine structure to control a propagating direction of incident light; and a refraction direction adjustment member that is arranged between the light control region and the photoelectric conversion region and adjusts a refraction direction of light emitted from the light control region.SELECTED DRAWING: Figure 3

Claims

1. A photoelectric conversion region having multiple pixels, An optical control region is located on the side of the photoelectric conversion region that is in the direction of light incidence and has a microstructure that controls the propagation direction of incident light, The system includes a refractive direction adjusting member positioned between the optical control region and the photoelectric conversion region, which controls the refractive index of each pixel according to the wavelength of light emitted from the optical control region to adjust the refractive direction of the incident light, The refractive direction adjusting member has a laminate that adjusts the refractive direction according to the wavelength of incident light for each of the plurality of pixels. Light detection device.

2. A photoelectric conversion region having multiple pixels, An optical control region is located on the side of the photoelectric conversion region that is in the direction of light incidence and has a microstructure that controls the propagation direction of incident light, The system comprises a color filter region positioned between the optical control region and the photoelectric conversion region, The system includes a refractive direction adjusting member positioned between the light control region and the color filter region, which controls the refractive index of each pixel according to the wavelength of light emitted from the light control region to adjust the refractive direction of the incident light, The refractive direction adjusting member has a laminate that adjusts the refractive direction according to the wavelength of incident light for each of the plurality of pixels. Light detection device.

3. The refraction direction adjusting member has two or more laminates corresponding to two or more wavelengths of light incident on the light control region, The two or more laminates each have a different refractive index. The light detection device according to claim 1.

4. The photoelectric conversion region has multiple color pixels for each of the multiple pixels, The refraction direction adjusting member adjusts the refraction direction of light emitted from the light control region in correspondence with each of the plurality of color pixels. The light detection device according to claim 1.

5. The light control region has a pixel control region having the microstructure for each of the plurality of color pixels, The refraction direction adjusting member adjusts the refraction direction of light emitted from at least one of the pixel control regions corresponding to a color pixel among the plurality of pixel control regions corresponding to the plurality of color pixels. The light detection device according to claim 4.

6. The refraction direction adjusting member causes the refraction directions of light emitted from two or more pixel control regions corresponding to two or more color pixels of different colors, among the plurality of pixel control regions corresponding to the plurality of color pixels, to differ. The light detection device according to claim 5.

7. A photoelectric conversion region having a plurality of pixels, An optical control region is located on the side of the photoelectric conversion region that is in the direction of light incidence and has a microstructure that controls the propagation direction of incident light, The system includes a refractive direction adjusting member positioned between the optical control region and the photoelectric conversion region, which controls the refractive index of each pixel according to the wavelength of light emitted from the optical control region to adjust the refractive direction of the incident light, The photoelectric conversion region has multiple color pixels for each of the multiple pixels, The light control region has a pixel control region having the microstructure for each of the plurality of color pixels, The aforementioned bending direction adjusting member is The refraction direction of the light emitted from the light control region is adjusted in correspondence with each of the plurality of color pixels. Among the plurality of pixel control regions corresponding to the plurality of color pixels, the refraction directions of light emitted from two or more pixel control regions corresponding to two or more color pixels of different colors are made to be different for each of them. The region into which light emitted from the two or more pixel control regions is incident is arranged, and each of the two or more laminates includes two or more light-transmitting layers having different refractive indices, Each of the two or more laminates has at least one light-transmitting layer whose refractive index is different. Light detection device.

8. A photoelectric conversion region having a plurality of pixels, An optical control region is located on the side of the photoelectric conversion region that is in the direction of light incidence and has a microstructure that controls the propagation direction of incident light, The system comprises a color filter region positioned between the optical control region and the photoelectric conversion region, The system includes a refractive direction adjusting member positioned between the light control region and the color filter region, which controls the refractive index of each pixel according to the wavelength of light emitted from the light control region to adjust the refractive direction of the incident light, The photoelectric conversion region has multiple color pixels for each of the multiple pixels, The light control region has a pixel control region having the microstructure for each of the plurality of color pixels, The aforementioned bending direction adjusting member is The refraction direction of the light emitted from the light control region is adjusted in correspondence with each of the plurality of color pixels. Among the plurality of pixel control regions corresponding to the plurality of color pixels, the refraction directions of light emitted from two or more pixel control regions corresponding to two or more color pixels of different colors are made to be different for each of them. The region into which light emitted from the two or more pixel control regions is incident is arranged, and each of the two or more laminates includes two or more light-transmitting layers having different refractive indices, Each of the two or more laminates has at least one light-transmitting layer whose refractive index is different. Light detection device.

9. Each of the two or more laminates is A first light-transmitting layer having the same refractive index, Each having a different refractive index, and comprising a second light-transmitting layer laminated on the first light-transmitting layer, The light detection device according to claim 7.

10. The refraction direction adjusting member emits light from the pixel control region corresponding to a specific color pixel among the plurality of color pixels without changing its refraction direction, and adjusts the refraction direction of light emitted from the pixel control region corresponding to a color pixel other than the specific color separately for each color. The light detection device according to claim 5.

11. The refraction direction adjusting member adjusts the refraction direction of light emitted from at least some of the pixel control regions so that the focal lengths of the light emitted from the plurality of pixel control regions corresponding to the plurality of color pixels become equal. The light detection device according to claim 5.

12. The refraction direction adjusting member adjusts the refraction direction of light emitted from at least some of the pixel control regions so that the beam diameters of the light emitted from the plurality of pixel control regions corresponding to the plurality of color pixels are equal on the photoelectric conversion region. The light detection device according to claim 11.

13. The refractive direction adjusting member includes a material having a refractive index n such that the focal position f, expressed as f = φ × D × n / (c × λ), is equal for all wavelengths λ, where λ is the wavelength of light emitted from the optical control region, n is the refractive index of the refractive direction adjusting member, D is the beam diameter at the light incident surface of the optical control region, φ is the beam diameter at the light receiving surface of the photoelectric conversion region, f is the focal position of the light emitted from the refractive direction adjusting member, and c is a predetermined real number coefficient. The light detection device according to claim 4.

14. A photoelectric conversion region having a plurality of pixels, An optical control region is located on the side of the photoelectric conversion region that is in the direction of light incidence and has a microstructure that controls the propagation direction of incident light, The system includes a refractive direction adjusting member positioned between the optical control region and the photoelectric conversion region, which controls the refractive index of each pixel according to the wavelength of light emitted from the optical control region to adjust the refractive direction of the incident light, The photoelectric conversion region has multiple color pixels for each of the multiple pixels, The light control region has a pixel control region having the microstructure for each of the plurality of color pixels, The aforementioned bending direction adjusting member is The refraction direction of the light emitted from the light control region is adjusted in correspondence with each of the plurality of color pixels. The refraction direction of light emitted from at least one of the pixel control regions corresponding to a color pixel among the plurality of pixel control regions corresponding to the plurality of color pixels is adjusted. The laminate comprises two or more light-transmitting layers, each with a different refractive index, and a separate microstructure whose structure is different from the microstructure in the light-control region. The separate microstructure adjusts the refraction direction of light emitted from at least some of the pixel control regions so that the focal lengths of the light emitted from the plurality of pixel control regions corresponding to the plurality of color pixels are equal, and is positioned in locations where pupil correction is required to perform pupil correction. The laminate is placed in a location where pupil correction is not required. Light detection device.

15. A photoelectric conversion region having a plurality of pixels, An optical control region is located on the side of the photoelectric conversion region that is in the direction of light incidence and has a microstructure that controls the propagation direction of incident light, The system comprises a color filter region positioned between the optical control region and the photoelectric conversion region, The system includes a refractive direction adjusting member positioned between the light control region and the color filter region, which controls the refractive index of each pixel according to the wavelength of light emitted from the light control region to adjust the refractive direction of the incident light, The photoelectric conversion region has multiple color pixels for each of the multiple pixels, The light control region has a pixel control region having the microstructure for each of the plurality of color pixels, The refraction direction adjusting member adjusts the refraction direction of the light emitted from the light control region in correspondence with each of the plurality of color pixels. The refraction direction of light emitted from at least one of the pixel control regions corresponding to a color pixel among the plurality of pixel control regions corresponding to the plurality of color pixels is adjusted. A laminate comprising two or more light-transmitting layers, each with a different refractive index, and a separate microstructure having a structure different from the microstructure in the light-control region, The separate microstructure adjusts the refraction direction of light emitted from at least some of the pixel control regions so that the focal lengths of the light emitted from the plurality of pixel control regions corresponding to the plurality of color pixels are equal, and is positioned where pupil correction is required to perform pupil correction. The laminate is placed in a location where pupil correction is not required. Light detection device.

16. The plurality of color pixels have red, green, and blue color pixels, The aforementioned bending direction adjusting member is A first region that refracts light incident on a red color pixel, A second region that refracts the light incident on the green color pixels, A third region that refracts light incident on the blue color pixels, It has, The refractive index of the second region is made greater than the refractive index of the first region. The refractive index of the third region is made greater than the refractive index of the second region. The light detection device according to claim 4.

17. A light detection device that outputs the light-detected pixel signal, An electronic device comprising a signal processing unit that performs signal processing on the aforementioned pixel signals, The aforementioned light detection device is A photoelectric conversion region having multiple pixels, An optical control region is located on the side of the photoelectric conversion region that is in the direction of light incidence and has a microstructure that controls the propagation direction of incident light, The system includes a refractive direction adjusting member positioned between the optical control region and the photoelectric conversion region, which controls the refractive index of each pixel according to the wavelength of light emitted from the optical control region to adjust the refractive direction of the incident light, The refractive direction adjusting member has a laminate that adjusts the refractive direction according to the wavelength of incident light for each of the plurality of pixels. electronic equipment.

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