Ns Materials Inc.

Toppan Inc.

Akiharu Miyanaga

Eiichi Kanaumi

Yoshikazu Nageno

Tetsuji Ito

Shingo Kokudo

Mayuko Watanabe

Yamashita Kazuyuki

Kazuyuki Yamashita

An object is to provide an infrared sensor with a quantum dot optimized. The present invention provides an infrared sensor () including a light absorption layer () that absorbs an infrared ray, wherein the light absorption layer includes a plurality of spherical quantum dots (). Alternatively, the present invention provides an infrared sensor including a light absorption layer that absorbs an infrared ray, wherein the light absorption layer includes a plurality of quantum dots and the quantum dot includes at least one kind of PbS, PbSe, CdHgTe, AgS, AgSe, AgTe, AgInSe, AgInTe, CuInSe, CuInTe, and InAs.

Infrared sensor and manufacturing method for the same

A resin molded product is provided and capable of increasing a degree of freedom of a shape compared to prior arts, further provided with increased durability against environmental changes and improved reliability, a manufacturing method thereof, and a wavelength conversion member and an illumination member. The resin molded product is implemented by molding resin in which quantum dots are dispersed. The resin preferably contains a dispersant composed of metal soap. For example, a wavelength conversion bar (fluorescent bar) interposed between a light-emitting device such as an LED and a light-guiding board is molded using quantum-dot-containing resin.

Resin molded product and manufacturing method thereof, and wavelength conversion member and illumination member

Provided is a display device containing quantum dots. A display device includes a display area. The display area has a light emitting device in which a first electrode, a layer between the first electrode and an emitting layer, the emitting layer, a layer between the emitting layer and a second electrode, and the second electrode are stacked in this order on a substrate. The emitting layer is formed of an inorganic layer containing quantum dots, and the light emitting device is a top emission device. A thin film transistor connected to the light emitting device is preferably an n-ch TFT.

Display device

A method of producing a wavelength converting member is provided. The method includes forming a quantum dot layer on a bottom organic layer, and forming a top organic layer on the quantum dot layer. The quantum dot layer includes quantum dots. A moisture vapor transmission rate of the top organic layer and the bottom organic layer is at least 0.006 g/(m&#xb7;day) and less than 9 g/(m&#xb7;day).

Wavelength converting member and method of producing the same

A quantum dot has a property that, when subjected to a GC-MS qualitative analysis at 350&#xb0; C., octadecene (ODE) is present while oleylamine (OLA) is absent. A light emitting apparatus has a fluorescent layer covering and disposed immediately above a light emitting side of a light emitting device. The fluorescent layer, which is disposed immediately above the light emitting device, is formed of a resin with quantum dots dispersed therein. Deteriorations of light emission intensities at respective RGB peak wavelengths of the light emitting device after light emission for 1000 hours at 85&#xb0; C. are all within 30% of a light emission intensity of the light emitting device before the light emission. Black discoloration caused by the deteriorations of the light emission intensities at the respective RGB peak wavelengths of the light emitting device does not occur in the resin.

Quantum dot, manufacturing method of the dot, and compact, sheet member, wavelength conversion member and light emitting apparatus using the quantum dot

To provide a quantum dot and manufacturing method of the dot particularly capable of reducing organic residues adhering to the quantum dot surface and of suppressing the black discoloration occurrence of a layer including the quantum dot positioned immediately above a light emitting device, and a compact, sheet member, wavelength conversion member and light emitting apparatus with high luminous efficiency using the quantum dot, a quantum dot of the present invention has a core portion including a semiconductor particle, and a shell portion with which the surface of the core portion is coated, and is characterized in that a weight reduction up to 490&#xb0; C. is within 75% in a TG-DTA profile. Further, the quantum dot of the invention is characterized in that oleylamine (OLA) is not observed in GC-MS qualitative analysis at 350&#xb0; C.

A wavelength conversion member having quantum dots is provided. The wavelength conversion member includes a quantum dot layer including quantum dots, and an organic film on a surface of the quantum dot layer. The quantum dot layer includes a first layer disposed on a first side of the wavelength conversion member that is closest to a light emitting device or on a light input surface side, and a second layer disposed on a second side of the wavelength conversion member that is farthest from the light emitting device or on a light output surface side. A light scattering agent is included in the first layer and the second layer. The quantum dots are not included in the first layer and are included in the second layer.

Wavelength conversion member, molded body, wavelength conversion apparatus, sheet member, light emitting apparatus, light guide apparatus and display apparatus

To provide a wavelength converting member that allows for improved yield, in which air bubbles can be prevented from being left in a resin containing a wavelength converting material; a light emitting device, a light emitting element, a light source unit, a display device, and a light guide member using the wavelength converting member; and a method of producing the wavelength converting member. A wavelength converting member has a receptacle provided with a receiving space; and a molding containing a wavelength converting material, placed in the receiving space. This allows air bubbles from being left in the wavelength converting material and improves the yield.

Method of producing wavelength converting member

It is an object of the present invention to provide a wavelength conversion member capable of appropriately performing color conversion compared to the prior arts and a light-emitting apparatus, a light-emitting element, a light source apparatus, and a display apparatus using the wavelength conversion member. A wavelength conversion member of the present invention includes a light incident surface, a light emission surface and a side face that connects between the light incident surface and the light emission surface, and includes a container provided with a storage space inside the side face, a wavelength conversion substance that fills the inside of the storage space and a colored layer formed on the side face.

Wavelength conversion member, and light-emitting apparatus, light-emitting element, light source apparatus, and display apparatus using same

To provide a light guide member which has less components than conventional ones and has stable wavelength conversion efficiency; and a light source unit using the light guide member. A light guide member includes: a light guide plate; a receiving space formed in the light guide plate to face a light entrance plane; and a wavelength converting material placed in the receiving space. With the use of the light guide member, the number of components can be reduced and stable wavelength conversion efficiency can be achieved. Further, the production process can be facilitated and the production cost can be reduced.

Light guide member and light source unit using the same

To provide a wavelength conversion member, molded body, wavelength conversion apparatus, sheet member, light emitting apparatus, light guide apparatus and display apparatus particularly capable of suppressing the black discoloration occurrence of a resin layer positioned immediately above a light emitting device as compared with conventional techniques, the present invention provides an LED apparatus having a storage portion, an LED chip disposed inside the storage portion, and a resin layer filled inside the storage portion, the resin layer is comprised by having a first resin layer on the side close to an LED device, and a second resin layer on the side far from the LED device, a light scattering agent is included in at least the first resin layer, and quantum dots are not included in the first resin layer and are included in the second resin layer.

To provide a wavelength converting member in which the occurrence of blackening can be suppressed compared to the prior art; and a light emitting device, a light emitting element, a light source unit, and a display device using the wavelength converting member. The wavelength converting member includes: a receptacle including a light entrance plane and a light exit plane opposite to the light entrance plane and provided with a receiving space inside the light entrance plane and the light exit plane; and a wavelength conversion layer having quantum dots that is placed in the receiving space. The distance between the light entrance plane and the wavelength conversion layer is longer than the distance between the light exit plane and the wavelength conversion layer.

Wavelength converting member, and light emitting device, light emitting element, light source unit, and display device using wavelength converting member

Growing community of inventors

Fukuoka, Japan

Akiharu Miyanaga