Color sensor for vehicle and method for manufacturing the same
First Claim
Patent Images
1. A color sensor comprising:
- a substrate;
first to third light receiving elements disposed on a surface of the substrate, wherein each of the first to third light receiving elements outputs an electric signal corresponding to an amount of light in an ultraviolet light range, a visible light range and a near infrared light range;
a red light filter for selectively passing a red light;
a first near infrared light block filter for blocking a near infrared light, wherein the first near infrared light block filter and the red light filter are disposed on the first light receiving element in this order;
a green light filter for selectively passing a green light;
a second near infrared light block filter for blocking the near infrared light, wherein the second near infrared light block filter and the green light filter are disposed on the second light receiving element in this order;
a visible light block filter for blocking a visible light, wherein the visible light block filter is disposed on the third receiving element; and
an ultraviolet light block plate disposed over the first and second near infrared light block filters and the visible light block filter.
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Abstract
A color sensor includes: a substrate; first to third light receiving elements on the substrate; a red light filter for passing a red light and a first near infrared light block filter for blocking a near infrared light on the first light receiving element; a green light filter for passing a green light and a second near infrared light block filter on the second light receiving element; a visible light block filter for blocking a visible light on the third receiving element; and an ultraviolet light block plate disposed over the first and second near infrared light block filters and the visible light block filter.
38 Citations
22 Claims
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1. A color sensor comprising:
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a substrate; first to third light receiving elements disposed on a surface of the substrate, wherein each of the first to third light receiving elements outputs an electric signal corresponding to an amount of light in an ultraviolet light range, a visible light range and a near infrared light range; a red light filter for selectively passing a red light; a first near infrared light block filter for blocking a near infrared light, wherein the first near infrared light block filter and the red light filter are disposed on the first light receiving element in this order; a green light filter for selectively passing a green light; a second near infrared light block filter for blocking the near infrared light, wherein the second near infrared light block filter and the green light filter are disposed on the second light receiving element in this order; a visible light block filter for blocking a visible light, wherein the visible light block filter is disposed on the third receiving element; and an ultraviolet light block plate disposed over the first and second near infrared light block filters and the visible light block filter. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A color sensor comprising:
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a silicon substrate having a first conductive type; a first impurity diffusion region having a second conductive type and disposed on a surface portion of the substrate; a second impurity diffusion region having the first conductive type and disposed on a surface portion of the first impurity diffusion region; and a third impurity diffusion region having the second conductive type and disposed on a surface portion of the second impurity diffusion region, wherein a boundary between the first impurity diffusion region and the substrate provides a first PN junction for photoelectric converting a near infrared light at the first PN junction, a boundary between the second impurity diffusion region and the first impurity diffusion region provides a second PN junction for photoelectric converting a red light at the second PN junction, and a boundary between the third impurity diffusion region and the second impurity diffusion region provides a third PN junction for photoelectric converting a green light at the second PN junction. - View Dependent Claims (12)
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13. A color sensor comprising:
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a color image element including a substrate, a plurality of light receiving elements and a color filter, wherein each light receiving element is disposed on a surface of the substrate, and the color filter is disposed over the plurality of light receiving elements, and wherein each light receiving element outputs an electric signal corresponding to amount of light; a lead frame, on which the color image element is disposed; a bonding wire for electrically bonding the color image element and the lead frame; a ultraviolet light block plate for blocking an ultraviolet light and made of glass, wherein the ultraviolet light block plate is bonded to a light receiving surface of the color image element with a visible light curing adhesion member; and a resin mold for molding the bonding wire and the color image element other than the light receiving surface of the color image element. - View Dependent Claims (14, 15, 16, 17, 18)
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19. A color sensor comprising:
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a color image element including a substrate, a plurality of light receiving elements and a color filter, wherein each light receiving element is disposed on a surface of the substrate, and the color filter is disposed over the plurality of light receiving elements, and wherein each light receiving element outputs an electric signal corresponding to amount of light; a lead frame, on which the color image element is disposed; a bonding wire for electrically bonding the color image element and the lead frame; a transparent resin mold for molding the bonding wire and the color image element; and a ultraviolet light block filter for blocking an ultraviolet light, wherein the ultraviolet light block filter is disposed on the transparent resin mold over a light receiving surface of the color image element. - View Dependent Claims (20)
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21. A color sensor comprising:
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a color image element including a substrate, a plurality of light receiving elements and a color filter, wherein each light receiving element is disposed on a surface of the substrate, and the color filter is disposed over the plurality of light receiving elements, and wherein each light receiving element outputs an electric signal corresponding to amount of light; a lead frame, on which the color image element is disposed; a bonding wire for electrically bonding the color image element and the lead frame; a ultraviolet light block filter for blocking an ultraviolet light, wherein the ultraviolet light block filter is disposed on a light receiving surface of the color image element through a SOG film; and a resin mold for molding the bonding wire and the color image element other than the light receiving surface of the color image element. - View Dependent Claims (22)
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Specification