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30results about How to "Light receiving efficiency" patented technology

Organic EL Display Device

The present invention provides an organic EL display device with high detection accuracy which can enhance both of light emission efficiency and light reception efficiency. In an organic EL display device which includes organic thin film elements, a power source line is connected to the organic thin film elements via drive TFTs, a signal line is connected to a gate of the drive TFT to supply a potential corresponding to a gray scale signal, a switch is provided for connecting the signal line and the organic thin film element, and the switch is controlled to allow an electric current which is obtained by photoelectric conversion with the organic thin film element to flow in the signal line and the organic thin film element during a period in which a gray scale signal is not applied to the signal line.
Owner:PANASONIC LIQUID CRYSTAL DISPLAY CO LTD +1

Light guide plate and support unit for the same

The light guide plate 32 has a light receiving portion 36 on one side thereof to receive light emitted by the LED 24 and a flexible light guide body 35 for transforming the light received by the light receiving portion 36 into planar light. The light guide body 35 is arranged along the liquid crystal panel 23 and has a plurality of light scattering portions 30 arranged on an outer surface thereof in a propagation direction of light emitted by the LED 24. Since the light guide plate 32 comprises a flexible member and thus can be arranged in a curved shape conforming to the liquid crystal panel 23 having a curved surface portion, the curved surface portion of the liquid crystal panel 23 can be illuminated uniformly. Further, the provision of the light scattering portions 30 can enhance a light reception efficiency and light emission efficiency even if the light guide plate 32 is thin.
Owner:CITIZEN ELECTRONICS CO LTD

Stacked solar cell device

This stacked solar battery device includes a plurality of solar battery units 4, an enclosure case made of a metal plate to house these solar battery units 4 therein, a cover glass having a partial cylindrical lens formed. The plurality of solar battery units 4 are housed in a plurality of recesses of the enclosure case, and are sealed with a sealing material of synthetic resin. The solar battery unit 4 has a planar light receiving solar battery module 10, and rod light receiving solar battery modules 30 and 50 stacked so that the module having a shorter center wavelength of the sensitivity wavelength band is positioned closer to the incident side of the sunlight. The solar battery module 10 is configured so that five planar light receiving solar-battery cells 11 are connected in parallel with four connection rods 20a and 20b, and the sunlight modules 30 and 50 are configured so that five sub modules 31 and 51 are connected in parallel respectively with the connection rods 40a, 40b, 60a and 60b. The sub modules 31 and 51 are configured so that a plurality of rod-shaped solar battery cells 32 and 52 respectively are connected in series.
Owner:SPHELAR POWER

Backside illuminated sensor and manufacturing method thereof

Disclosed is a backside illuminated image sensor including a light receiving element formed in a first substrate, an interlayer insulation layer formed on the first substrate including the light receiving element, a via hole formed through the interlayer insulation layer and the first substrate while being spaced apart from the light receiving element, a spacer formed on an inner sidewall of the via hole, an alignment key to fill the via hole, interconnection layers formed on the interlayer insulation layer in a multilayer structure in which a backside of a lowermost layer of the interconnection layers is connected to the alignment key, a passivation layer covering the interconnection layers, a pad locally formed on a backside of the first substrate and connected to a backside of the alignment key, and a color filter and a microlens formed on the backside of the first substrate corresponding to the light receiving element.
Owner:SK HYNIX INC

Solid-state imaging device and method for fabricating the same

A solid-state imaging device includes: an imaging area in which light receiving portions are disposed; an interconnect layer disposed on the light receiving portions, the interconnect layer including metal interconnects having openings and first insulating films; inner-layer lenses formed over the interconnect layer in one-to-one relationship with the light receiving portions; a transparent second insulating film formed on the interconnect layer and the inner-layer lenses; top lenses formed on the second insulating film in one-to-one relationship with the light receiving portions, an upper face of each of the top lenses being a convexly curved face; and a transparent film on the top lenses, the transparent film being formed of a material having a refractive index smaller than a refractive index of the top lenses. In this way, a focal point of at least part of incident light can be situated above a semiconductor substrate.
Owner:GK BRIDGE 1

Infrared sensor, infrared gas detector and infrared ray source

An infrared sensor includes a substrate, a membrane as a small-thickness portion formed on the substrate, a detecting element for generating a detection signal on the basis of temperature variation occurring when receiving infrared rays, at least a part thereof being formed on the membrane, and an infrared ray absorption film formed on the membrane so as to cover at least a part of the detecting element. The detecting element is externally electrically connected through a sensor pad portion provided at an end portion of the detecting element. A substrate surface including the sensor pad portion and the infrared ray absorption film is coated by a protection film made of parylene.
Owner:DENSO CORP +1

Infrared frame detector

An infrared flame detector of the present invention has an infrared radiation receiving element accommodated in a package. In the infrared radiation receiving element, a set of two pyroelectric elements are arranged side by side and connected in anti-series on a pyroelectric element forming substrate. An infrared optical filter includes a filter forming substrate made of an infrared radiation transmitting material, a set of two narrowband transmission filter sections formed at positions respectively corresponding to positions of the pyroelectric elements on a first surface of the filter forming substrate and configured to transmit infrared radiation of a first selective wavelength and infrared radiation of a second selective wavelength, and a broadband blocking filter section formed on a second surface of the filter forming substrate and configured to absorb infrared radiation of a wavelength longer than an upper limit of an infrared reflection band.
Owner:PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD

Apparatus for measuring bio-information and a method for error compensation thereof

The present disclosure relates to an apparatus for measuring bio-information, the apparatus including a heart rate sensor unit configured to measure heart rates by receiving a light that has entered and come out from skin, an acceleration sensor unit configured to output a step count by measuring the step count of a wearer, a display unit configured to display the measured heart rates and step count, and a wrist-wearable connection unit configured to electrically connect the heart rate sensor, the acceleration sensor unit and the display unit, whereby heart rate can be accurately measured using a line light source instead of point light source, even if the apparatus is not fully attached to a wrist. The apparatus includes a heart rate sensor unit configured to improve a light receiving efficiency using four light receiving units.
Owner:LG ELECTRONICS INC

Solid-state image pickup device, image pickup apparatus including the same, and method of manufacturing the same

A solid-state image pickup device includes: a semiconductor substrate; and a plurality of pixel circuits formed on the semiconductor substrate; each of the plurality of pixel circuits formed on the semiconductor substrate including a photoelectric conversion element, a first buried gate electrode formed adjacent to the photoelectric conversion element, a second buried gate electrode formed away from each of the photoelectric conversion element and the first buried gate electrode, a first diffusion layer formed between the first buried gate electrode and the second buried gate electrode, and a second diffusion layer formed between the first buried gate electrode and the second buried gate electrode away from the first diffusion layer so as to overlap the first diffusion layer; wherein electric charges accumulated in the photodiode conversion element are transferred to the second diffusion layer through the first diffusion layer.
Owner:SONY CORP

Imaging element

An imaging element includes: a plurality of photoelectric converting elements that receive irradiation of light and convert the light into electrical charges; and a color filter layer which has a red filter, a green filter, and a blue filter which are respectively provided for the photoelectric converting elements. Partition walls having a lower refractive index than those of the red filter, the green filter, and the blue filter are provided only around the peripheries of the red filters.
Owner:FUJIFILM CORP

Backside illuminated sensor and manufacturing method thereof

Disclosed is a backside illuminated image sensor including a light receiving element formed in a first substrate, an interlayer insulation layer formed on the first substrate including the light receiving element, a via hole formed through the interlayer insulation layer and the first substrate while being spaced apart from the light receiving element, a spacer formed on an inner sidewall of the via hole, an alignment key to fill the via hole, interconnection layers formed on the interlayer insulation layer in a multilayer structure in which a backside of a lowermost layer of the interconnection layers is connected to the alignment key, a passivation layer covering the interconnection layers, a pad locally formed on a backside of the first substrate and connected to a backside of the alignment key, and a color filter and a microlens formed on the backside of the first substrate corresponding to the light receiving element.
Owner:SK HYNIX INC

Solid-state image pickup device, image pickup apparatus including the same, and method of manufacturing the same

A solid-state image pickup device in which electric charges accumulated in a photodiode conversion element are transferred to a second diffusion layer through a first diffusion layer.
Owner:SONY CORP

Confocal optical scanner

A confocal optical scanner of Nipkow disk type for measuring a sample, in which each component of two or more color pigments, has a high reflection mirror for separating an excited light to be radiated onto the sample and a fluorescence emitted from the sample, wherein a reflectance of the high reflection mirror is from 80% to 100% in a measured wavelength region including at least an excited light wavelength region and a fluorescence wavelength region. Thereby, the confocal optical scanner capable of measuring a polychromatic fluorescent image at the same time is realized with the enhanced light receiving efficiency of fluorescence, using one high reflection mirror without using a plurality of dichroic mirrors by exchange.
Owner:YOKOGAWA ELECTRIC CORP

Photodetectors, optical modules, and optical transmission devices

A method is provided to provide a photodetector that can enhance the light receiving sensitivity with a relatively simple structure, and that can maintain a high speed responsiveness. A photodetector having a MSM (Metal-Semiconductor-Metal) structure, including a substrate, a multilayer film that is disposed over the substrate and includes a low refractive index layer and a high refractive index layer that are alternately laminated as a unit cycle. At least one of the low refractive index layer and the high refractive index layer is a photoabsorption layer composed of semiconductor, and a portion that is embedded in the multilayer film, the portion having at least one pair of opposing electrodes within the multilayer film. The multilayer film is formed such that a wavelength region corresponding to a band edge of a photonic band overlaps at least a part of an absorption band of the photoabsorption layer, to thereby delay a group velocity of incidence light Pin with a predetermined wavelength that belongs to the absorption band of the photoabsorption layer.
Owner:SEIKO EPSON CORP

Display illumination device with light sensor

An optical display device, including a light guiding plate, a light detecting sensor and at least two illuminants. The light detecting sensor and the illuminants are commonly mounted on a wiring board with the at least two or more illuminants disposed to face a light incidence surface of the light guiding plate. The light detecting sensor is disposed on the same side of the wiring board as the illuminants with respect to the light guiding plate.
Owner:JAPAN DISPLAY WEST

Ink jet printer

In an ink jet printer using an ink cartridge having an ink tank for storing ink therein and a recording head for ejecting the ink stored in the ink tank as ink drops and forming an image on a recording paper sheet, the detection accuracy of a displacement detection sensor for detecting a displacement of printing position is improved while reducing manufacturing costs of the displacement detection sensor. The displacement detection sensor is comprised of a light emitting device for emitting diffused light, a first lens for focusing the light emitted from the light emitting device on a recording paper sheet, a second lens for focusing the light reflected by the recording paper sheet and a light receiving device for receiving the light focused by the second lens. By focusing the diffused light emitted from the light emitting device by the first lens, the diameter of a beam spot projected on the recording paper sheet is made smaller than a longitudinal dimension and a width dimension of each component forming a displacement detection pattern.
Owner:FUNAI ELECTRIC CO LTD

Ink jet printer

In an ink jet printer using an ink cartridge having an ink tank for storing ink therein and a recording head for ejecting the ink stored in the ink tank as ink drops and forming an image on a recording paper sheet, the detection accuracy of a displacement detection sensor for detecting a displacement of printing position is improved while reducing manufacturing costs of the displacement detection sensor. The displacement detection sensor is comprised of a light emitting device for emitting diffused light, a first lens for focusing the light emitted from the light emitting device on a recording paper sheet, a second lens for focusing the light reflected by the recording paper sheet and a light receiving device for receiving the light focused by the second lens. By focusing the diffused light emitted from the light emitting device by the first lens, the diameter of a beam spot projected on the recording paper sheet is made smaller than a longitudinal dimension and a width dimension of each component forming a displacement detection pattern.
Owner:FUNAI ELECTRIC CO LTD

Organic light emitting display and method of manufacturing the same

An organic light emitting display includes an organic light emitting diode formed on a substrate, coupled to a transistor; a photodiode formed on the substrate and including a semiconductor layer including a high-concentration P doping region, an intrinsic region with defects and a high-concentration N doping region; and a controller that uniformly controls the luminance of light emitted from the organic light emitting diode by controlling a voltage applied to the first electrode and the second electrode according to the voltage outputted from the photodiode.
Owner:SAMSUNG DISPLAY CO LTD

Photodiode and manufacturing method of the same

A lateral photodiode with increased sensitivity. The lateral photodiode includes: a substrate, a semiconductor layer, formed on the substrate, for receiving input light, an insulation layer formed on the semiconductor layer, and electrodes formed within the insulation layer. A plurality of microlenses is formed over a surface of the insulation layer (or directly on the surface) within a light receiving area of the photodiode, and the input light is focused by the microlenses in a manner so as not to be directed toward the electrodes.
Owner:FUJIFILM CORP

Bi-directional optical communication module

An optical communication module includes a base substrate; a wavelength branching filter arranged on the base substrate, in which a light is allowed to go through or be reflected according to a wavelength thereof; a photodetector arranged on the base substrate to receive a light passed through the wavelength branching filter and to convert the light into an electric signal; and a light emitting device arranged on the base substrate to provide a transmission light. The transmission light is outputted through the wavelength branching filter. The optical detector comprises a light receiving portion which is formed to have a first length and a second length, which is shorter than the first length. The first length of the light receiving portion is perpendicular to an optical axis of an input light on a plane parallel to a surface of the substrate, and a second length of the light receiving portion is parallel to the optical axis of the input light.
Owner:LAPIS SEMICON CO LTD

Lidar sensing device

A LiDAR sensing device may include: a sensing light source unit configured to radiate sensing light; a light transmitting reflector configured to reflect the sensing light radiated from the sensing light source unit; a scanner unit configured to reflect the sensing light reflected from the light transmitting reflector into a target, and to reflect incident light reflected from the target; a light receiving lens configured to pass the incident light reflected from the scanner unit, and integrated with the light transmitting reflector; a light receiving reflector configured to reflect the incident light passing through the light receiving lens; and an optical detecting unit into which the incident light reflected from the light receiving reflector is incident.
Owner:HYUNDAI MOBIS CO LTD

Lidar sensing device

A LiDAR sensing device including: a sensing light source unit configured to radiate sensing light; a light transmitting reflector configured to reflect the sensing light radiated from the sensing light source unit; a scanner unit configured to reflect the sensing light reflected from the light transmitting reflector into a target, and to reflect incident light reflected from the target; a light receiving lens configured to pass the incident light reflected from the scanner unit, and integrated with the light transmitting reflector; a light receiving reflector configured to reflect the incident light passing through the light receiving lens; and an optical detecting unit into which the incident light reflected from the light receiving reflector is incident.
Owner:HYUNDAI MOBIS CO LTD

Bi-directional optical communication module

An optical communication module includes a base substrate; a wavelength branching filter arranged on the base substrate, in which a light is allowed to go through or be reflected according to a wavelength thereof; a photodetector arranged on the base substrate to receive a light passed through the wavelength branching filter and to convert the light into an electric signal; and a light emitting device arranged on the base substrate to provide a transmission light. The transmission light is outputted through the wavelength branching filter. The optical detector comprises a light receiving portion which is formed to have a first length and a second length, which is shorter than the first length. The first length of the light receiving portion is perpendicular to an optical axis of an input light on a plane parallel to a surface of the substrate, and a second length of the light receiving portion is parallel to the optical axis of the input light.
Owner:LAPIS SEMICON CO LTD

Illumination system and projection device

The disclosure provides an illumination system and a projection device applying the illumination system. The illumination system includes a laser light source, a wavelength conversion module, and a spot region modulation module configured to shift a transmission path of a laser beam. When the wavelength conversion module rotates, the spot region modulation module moves, in a first period of time, the laser beam in a wavelength conversion region of the wavelength conversion module along a first shift path, so that the laser beam forms a first spot region in an irradiation region in the wavelength conversion region. The spot region modulation module causes, in a second period of time, the laser beam to form a second spot region in an irradiation region in a non-conversion region of the wavelength conversion module. A size of the first spot region is greater than a size of the second spot region.
Owner:CORETRONIC

Optical device and method for manufacturing optical device

Provided are an optical device that is a small and thin optical device including a redistribution layer and has high light emitting efficiency and light receiving efficiency, and a method for manufacturing the optical device. An optical device includes: a photoelectric conversion element configured to include a semiconductor substrate, a semiconductor layer capable of receiving or emitting light, and electrodes; a sealing portion configured to expose a surface of the photoelectric conversion element on the opposite side to an electrode-formed surface of the photoelectric conversion element on which the electrodes are formed; a redistribution layer configured to include a reflecting portion disposed in a region in which, when viewed in plan, the semiconductor layer and the electrodes do not overlap each other and configured to reflect the light to a side on which the semiconductor layer is located; and external connection terminals configured to be coupled to the redistributions.
Owner:ASAHI KASEI ELECTRONICS CO LTD

Organic light emitting display and method of manufacturing the same

An organic light emitting display includes an organic light emitting diode formed on a substrate, coupled to a transistor; a photodiode formed on the substrate and including a semiconductor layer including a high-concentration P doping region, an intrinsic region with defects and a high-concentration N doping region; and a controller that uniformly controls the luminance of light emitted from the organic light emitting diode by controlling a voltage applied to the first electrode and the second electrode according to the voltage outputted from the photodiode.
Owner:SAMSUNG DISPLAY CO LTD

Optical device and method for manufacturing optical device

Provided are an optical device that is a small and thin optical device including a redistribution layer and has high light emitting efficiency and light receiving efficiency, and a method for manufacturing the optical device. An optical device includes: a photoelectric conversion element configured to include a semiconductor substrate, a semiconductor layer capable of receiving or emitting light, and electrodes; a sealing portion configured to expose a surface of the photoelectric conversion element on the opposite side to an electrode-formed surface of the photoelectric conversion element on which the electrodes are formed; a redistribution layer configured to include a reflecting portion disposed in a region in which, when viewed in plan, the semiconductor layer and the electrodes do not overlap each other and configured to reflect the light to a side on which the semiconductor layer is located; and external connection terminals configured to be coupled to the redistributions.
Owner:ASAHI KASEI ELECTRONICS CO LTD
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