Canon Kabushiki Kaisha

Naoto Nakamura

Hidetoshi Suzuki

Ichiro Nomura

Tetsuya Kaneko

Hideaki Mitsutake

Shinya Mishina

Yoshihisa Sano

Toshihiko Takeda

Yasue Sato

Yasuhiro Hamamoto

Shinichi Kawate

Toshihiko Miyazaki

Yoshiyuki Osada

Yoshikazu Banno

Masahiro Tagawa

Tadashi Kaneko

Hisaaki Kawade

Masato Yamanobe

Masami Iseki

Toshimitsu Kawase

Aoji Isono

Eiji Yamaguchi

Haruhito Ono

Toshinori Hasegawa

Nobutaka Mizuno

Kohei Nakata

Yuji Kasanuki

Hiroaki Toshima

Takashi Noma

Noritake Suzuki

Yasuyuki Todokoro

Rie Ueno

Masahito Niibe

Naoyuki Ito

Tomokazu Andoh

Masato Yajima

Yoshihisa Sanou

Ryota Watanabe

Provided is a stacked organic light-emitting device in which organic compound layers for respective emission colors are capable of separately emitting light. The stacked organic light-emitting device includes a first organic compound layer, a second organic compound layer, and a third organic compound layer, which have emission colors different from each other. The first organic compound layer is provided on one side of a common transparent electrode, and the second organic compound layer and the third organic compound layer are provided on another side thereof. The first organic compound layer has a polarity direction opposite to polarity directions of the second organic compound layer and the third organic compound layer.

Stacked organic light-emitting device, and image display apparatus and digital camera including the same

An organic light-emitting element includes a first electrode, a second electrode, and at least one organic compound layer disposed between the first electrode and the second electrode. The organic compound layer includes a light-emitting layer containing a light-emitting material and being configured to emit light toward the first electrode and the second electrode. The light emitted toward the first electrode is reflected from a reflection plane located at the first electrode to cause interference with the light emitted toward the second electrode. The interference provides an interference intensity distribution having a maximum peak at a wavelength &#x3bb;. The light-emitting material of the light-emitting layer exhibits a photoluminescence spectrum having a maximum peak at a wavelength &#x3bb;. The organic light-emitting element produces an electroluminescence spectrum having a maximum peak at a wavelength &#x3bb;. These wavelengths satisfy the relationships: &#x3bb;&#x2260;&#x3bb;and |&#x3bb;&#x2212;&#x3bb;|&#x3c;|&#x3bb;&#x2212;&#x3bb;|.

Organic light-emitting element and light-emitting device using the same

An organic light-emitting device has a substrate and a plurality of organic light-emitting elements formed on the substrate. The plurality of the organic light-emitting elements include a first light-emitting element emitting light of a first emission color, and a second light-emitting element emitting light of a different emission color. Each light-emitting element has, in sequence, a first electrode having a light reflection layer and a transparent conductive layer, an organic compound layer containing a light-emitting layer, and a second electrode on the substrate. The light reflection layer of the first element is between the substrate and the transparent conductive layer and the light reflection layer of the second element is between the transparent conductive layer and the organic compound layer. A thickness of the transparent conductive layer of the first and second organic light-emitting elements is the same.

Organic light-emitting elements of LED with light reflection layers in each spaced on opposite sides of transparent conductive layer

An image-forming device includes, in an envelope, an electron-emitting element for emitting an electron by applying a voltage between electrodes, an image-forming member for forming an image by irradiation with an electron beam emitted from the electron-emitting element, and a supporting member for supporting the envelope. The supporting member has an electroconductive film at an end portion and a side portion thereof, and is electrically connected through the electroconductive film to the electrode.

Image-forming device using electron-emitting elements

Provided is a multicolor organic light emitting apparatus having a plurality of organic light emitting devices formed on a substrate, for emitting two or more types of luminescent colors. A thickness of a layer formed between a light emitting layer and a reflection surface of a cathode is the same as that of each of first and second organic light emitting devices, and an optical distance between a light emitting surface of each of the light emitting layers and the reflection surface of the cathode is adjusted such that each thickness of the light emitting layers is varied to enhance light emitted from the light emitting layers by optical interference.

Multicolor organic light emitting apparatus

An electron beam apparatus includes an electron source having an electron-emitting device, an electrode for controlling an electron beam emitted from the electron source, a target to be irradiated with an electron beam emitted from the electron source and a spacer arranged between the electron source and the electrode. The spacer has a semiconductor film on the surface thereof that is electrically connected to the electron source and the electrode.

Electron beam apparatus and image forming apparatus

An image-forming device having, in an envelope, an electron-emitting element, an image-forming member for forming an image by irradiation of an electron beam emitted from the electron-emitting element, and an electroconductive supporting member for supporting the envelope. The potential of the supporting member is controlled to not be higher than the maximum potential applied to the electron-emitting element. The electron-emitting element and the image-forming member can be placed in juxtaposition on the same substrate, an electro-conductive substrate can be additionally provided in opposition to the face of the substrate, and the supporting member can be connected electrically to one of the electrodes and also to the electro-conductive substrate.

Image-forming device

An electron source comprises a plurality of electron-emitting devices and a drive means for driving the devices. The drive means applies a voltage above a threshold level to selected ones of the plurality of electron-emitting devices according to an image signal to cause the selected devices to emit electrons. The drive means also applies a voltage pulse for bringing the plurality of electron-emitting devices into a high resistance state. The voltage pulse for bringing into a high resistance state has a polarity reverse to that of the voltage for causing electron emission and has a voltage rising rate of greater than 10 V/sec.

Electron source, image-forming apparatus comprising the same and method of driving such an image-forming apparatus

An electron-emitting device having an electron-emitting region between electrodes on a substrate where the electron-emitting region contains fine particles dispersed therein at an areal occupation ratio of the fine particles ranging from 20% to 75% of the electron-emitting region is disclosed. The other electron-emitting device where the electron-emitting region contains fine particles being arranged at gaps of from 5 &angst; to 100 &angst; and having average particle diameter of from 5 &angst; to 1000 &angst; is also disclosed. Electron beam-generating apparatus and image-forming apparatus comprise one of the electron-emitting regions and a modulation means for modulating the electron beams emitted from the electron-emitting devices in accordance with information signals.

Electron-emitting device, and electron beam-generating apparatus and image-forming apparatus employing the device

An electron source comprises a plurality of electron-emitting devices and a drive means for driving the devices. The drive means applies a voltage above a threshold level to selected ones of the plurality of electron-emitting devices according to an image signal to cause the selected devices to emit electrons. The drive means also applies a voltage pulse for bringing the plurality of electron-emitting devices into a high resistance state. The voltage pulse for bringing into a high resistance state has a polarity reverse to that of the voltage for causing electron emission and has a voltage rising rate of greater than 10V/sec.

This invention discloses an image forming apparatus having an electron source on which a plurality of electron-emitting devices are arranged, an image forming member on which an image is formed by electrons emitted by the electron-emitting devices, and a structure for maintaining an interval between the electron source and the image forming member, in which an interval between two electron-emitting devices adjacent to each other via the structure is larger than an interval between two electron-emitting devices adjacent to each other without the mediacy of the structure, and electrons emitted by the electron-emitting devices are deflected toward the structure.

Image forming apparatus for forming image by electron irradiation from electron-emitting device

An image-forming device having, in an envelope, an electron-emitting element, an image-forming member for forming an image by irradiation of an electron beam emitted from the electron-emitting element, and an electroconductive supporting member for supporting the envelope. The potential of the supporting member is controlled to not be higher than the maximum potential applied to the electron-emitting element. The electron-emitting element and the image-forming member can be placed in juxtaposition on the same substrate, an electroconductive substrate can be additionally provided in opposition to the face of the substrate, and the supporting member can be connected electrically to one of the electrodes and also to the electroconductive substrate.

An image display apparatus includes a panel type light source including a plurality of cold-cathode devices arranged two-dimensionally on a substrate and a phosphor member contained in a same vacuum container for emitting visible light upon irradiation of electron beams by the cold-cathode devices. In addition, a transmission type optical modulation panel using the panel type light source as a back light source.

Growing community of inventors

Isehara, Japan

Naoto Nakamura