Abstract: A display device including: a light emitting unit including a plurality of light sources; a second panel configured to adjust transmittance of light from the light emitting unit; and a first panel configured to adjust transmittance of light from the second panel, further including: a first control unit configured to perform first control with respect to the first panel for controlling transmittance of each pixel on the basis of the image data; and a second control unit configured to perform, in a case where an image area of low brightness is adjacent to an image area of high brightness in the image data, second control for making transmittance of the second panel at a partial area corresponding to the image area of low brightness be lower than transmittance of the second panel at a partial area corresponding to the image area of high brightness.

Abstract: A display device including: a light emitting unit including a plurality of light sources; a second panel configured to adjust transmittance of light from the light emitting unit; and a first panel configured to adjust transmittance of light from the second panel, further including: a first control unit configured to perform first control with respect to the first panel for controlling transmittance of each pixel on the basis of the image data; and a second control unit configured to perform, in a case where an image area of low brightness is adjacent to an image area of high brightness in the image data, second control for making transmittance of the second panel at a partial area corresponding to the image area of low brightness be lower than transmittance of the second panel at a partial area corresponding to the image area of high brightness.

Abstract: A light emitting substrate configured to enhance luminance of an image display apparatus is disclosed. The light emitting substrate includes a transparent substrate, a photonic crystal structure, a transparent anode, a light emitting layer having a diffuse reflectance of 0.04% or less and having a side reflecting member at a side thereof. The photonic crystal structure, the transparent anode, and the light emitting layer are successively laminated in this order on the transparent substrate. The light emitting substrate satisfies the following Condition 1 or Condition 2: Condition 1: 95?c, and 40?a<100 Condition 2: 85?c<95, and 80?a<100 where a is a relative area of the photonic crystal structure to that of the light emitting layer, and c is a reflectance of the side reflecting member.

Abstract: An image display device includes a rear plate provided with an electron emitting element, a face plate provided with a transparent substrate, a transparent anode electrode formed on the transparent substrate, and a fluorescent layer provided on the anode electrode and including fluorescent particles. An average particle size of the fluorescent particles is equal to or less than 500 nm. The face plate has a light extraction means for extracting light emitted when the fluorescent layer is irradiated by electrons emitted from the electron emitting element to the substrate side.

Abstract: A light emitting substrate configured to enhance luminance of an image display apparatus is disclosed. The light emitting substrate includes a transparent substrate, a photonic crystal structure, a transparent anode, a light emitting layer having a diffuse reflectance of 0.04% or less and having a side reflecting member at a side thereof. The photonic crystal structure, the transparent anode, and the light emitting layer are successively laminated in this order on the transparent substrate. The light emitting substrate satisfies the following Condition 1 or Condition 2: Condition 1: 95?c, and 40?a<100 Condition 2: 85?c<95, and 80?a<100 where a is a relative area of the photonic crystal structure to that of the light emitting layer, and c is a reflectance of the side reflecting member.

Abstract: A novel phenanthroline compound is provided which is represented by the general formula [I]: (wherein R1, R2, R3, R4, R5 and R6 are the same or different and each is selected from a hydrogen atom, an unsubstituted or substituted alkyl group, an unsubstituted or substituted aralkyl group, an unsubstituted or substituted aryl group, an unsubstituted or substituted heterocyclic group, and a halogen atom; and Ar1 and Ar2 are the same or different and each is selected from an unsubstituted or substituted fluorenyl group, an unsubstituted or substituted fluoranthenyl group, an unsubstituted or substituted perylenyl group, and an unsubstituted or substituted carbazolyl group). An organic light emitting device using the phenanthroline compound is also provided that has a light output with a high efficiency and a high luminance and has a high long-term durability.

Abstract: An image display device includes a rear plate provided with an electron emitting element, a face plate provided with a transparent substrate, a transparent anode electrode formed on the transparent substrate, and a fluorescent layer provided on the anode electrode and including fluorescent particles. An average particle size of the fluorescent particles is equal to or less than 500 nm. The face plate has a light extraction means for extracting light emitted when the fluorescent layer is irradiated by electrons emitted from the electron emitting element to the substrate side.

Abstract: In an illumination device, a light guide is adapted to emit the light from a face thereof and is provided with an area, on a face opposite to the light emitting face, for diffusing and/or reflecting the light introduced into the light guide from an end face thereof or is provided with uneven light emitting characteristics along the longitudinal direction of the light guide, and the center of the light source positioned at the end of the light guide is placed at a position aberrated from the normal line to the area, whereby attained are compactness, a low cost, a low electric power consumption, a high efficiency of utilization of the light emitted by the light source, and excellent and uniform illumination characteristics. An image reading device and an information processing apparatus can also be equipped with the above-mentioned illumination device.

Abstract: In an illumination device, a light guide is adapted to emit the light from a face thereof and is provided with an area, on a face opposite to the light emitting face, for diffusing and/or reflecting the light introduced into the light guide from an end face thereof or is provided with uneven light emitting characteristics along the longitudinal direction of the light guide, and the center of the light source positioned at the end of the light guide is placed at a position aberrated from the normal line to the area, whereby attained are compactness, a low cost, a low electric power consumption, a high efficiency of utilization of the light emitted by the light source, and excellent and uniform illumination characteristics. An image reading device and an information processing apparatus can also be equipped with the above-mentioned illumination device.

Abstract: A novel phenanthroline compound is provided which is represented by the general formula [I]: (wherein R1, R2, R3, R4, R5 and R6 are the same or different and each is selected from a hydrogen atom, an unsubstituted or substituted alkyl group, an unsubstituted or substituted aralkyl group, an unsubstituted or substituted aryl group, an unsubstituted or substituted heterocyclic group, and a halogen atom; and Ar1 and Ar2 are the same or different and each is selected from an unsubstituted or substituted fluorenyl group, an unsubstituted or substituted fluoranthenyl group, an unsubstituted or substituted perylenyl group, and an unsubstituted or substituted carbazolyl group). An organic light emitting device using the phenanthroline compound is also provided that has a light output with a high efficiency and a high luminance and has a high long-term durability.

Abstract: A novel phenanthroline compound is provided which is represented by the general formula [I]: (wherein R1, R2, R3, R4, R5 and R6 are the same or different and each is selected from a hydrogen atom, an unsubstituted or substituted alkyl group, an unsubstituted or substituted aralkyl group, an unsubstituted or substituted aryl group, an unsubstituted or substituted heterocyclic group, and a halogen atom; and Ar1 and Ar2 are the same or different and each is selected from an unsubstituted or substituted fluorenyl group, an unsubstituted or substituted fluoranthenyl group, an unsubstituted or substituted perylenyl group, and an unsubstituted or substituted carbazolyl group). An organic light emitting device using the phenanthroline compound is also provided that has a light output with a high efficiency and a high luminance and has a high long-term durability.

Abstract: A new condensed polycyclic compound represented by general formula [I]: wherein R1 is hydrogen, halogen, cyano, a substituted amino or a group selected from the group consisting of alkyl, aralkyl, aryl, heterocyclic, each having no substituent or a substituent; and Ar1 to Ar5 are the same or different and are each independently a condensed polycyclic aromatic group or a condensed polycyclic heterocyclic group, each having no substituent or a substituent is used for an organic light-emitting device that is extremely efficient in a light output with high luminance and is extremely durable.

Abstract: In an illumination device, a light guide is adapted to emit the light from a face thereof and is provided with an area, on a face opposite to the light emitting face, for diffusing and/or reflecting the light introduced into the light guide from an end face thereof or is provided with uneven light emitting characteristics along the longitudinal direction of the light guide, and the center of the light source positioned at the end of the light guide is placed at a position aberrated from the normal line to the area, whereby attained are compactness, a low cost, a low electric power consumption, a high efficiency of utilization of the light emitted by the light source, and excellent and uniform illumination characteristics. An image reading device and an information processing apparatus can also be equipped with the above-mentioned illumination device.

Abstract: There is disclosed an illumination device in which a light guide is adapted to emit the light from a face thereof and is provided with an area, on a face opposite to the light emitting face, for diffusing and/or reflecting the light introduced into the light guide from an end face thereof or is provided with uneven light emitting characteristics along the longitudinal direction of the light guide, and the center of the light source positioned at the end of the light guide is placed at a position aberrated from the normal line to said area, whereby attained are compactness, a low cost, a low electric power consumption, a high efficiency of utilization of the light emitted by the light source, and excellent and uniform illumination characteristics. There are also disclosed an image reading device and an information processing apparatus, equipped with the above-mentioned illumination device.

Abstract: A novel phenanthroline compound is provided which is represented by the general formula [I]: (wherein R1, R2, R3, R4, R5 and R6 are the same or different and each is selected from a hydrogen atom, an unsubstituted or substituted alkyl group, an unsubstituted or substituted aralkyl group, an unsubstituted or substituted aryl group, an unsubstituted or substituted heterocyclic group, and a halogen atom; and Ar1 and Ar2 are the same or different and each is selected from an unsubstituted or substituted fluorenyl group, an unsubstituted or substituted fluoranthenyl group, an unsubstituted or substituted perylenyl group, and an unsubstituted or substituted carbazolyl group). An organic light emitting device using the phenanthroline compound is also provided that has a light output with a high efficiency and a high luminance and has a high long-term durability.

Abstract: There is provided an organic light emitting device to break through the limit of 25% of internal quantum efficiency and 5% of external quantum efficiency while using singlet luminescence.

Abstract: A new condensed polycyclic compound represented by general formula [I]: wherein R1 is hydrogen, halogen, cyano, a substituted amino or a group selected from the group consisting of alkyl, aralkyl, aryl, heterocyclic, each having no substituent or a substituent; and Ar1 to Ar5 are the same or different and are each independently a condensed polycyclic aromatic group or a condensed polycyclic heterocyclic group, each having no substituent or a substituent is used for an organic light-emitting device that is extremely efficient in a light output with high luminance and is extremely durable.

Abstract: There is provided an organic light emitting device to break through the limit of 25% of internal quantum efficiency and 5% of external quantum efficiency while using singlet luminescence.

Abstract: The present invention provides a very durable charge injection type light emitting device. In a charge injection type light emitting device comprising a positive electrode, a negative electrode, and an organic film sandwiched between the positive and negative electrodes and composed of one or more organic compounds, the organic film containing at least one light emitting layer, a potential barrier to electrons between the light emitting layer and a barrier layer defined as a member that contacts with the light emitting layer from the positive electrode side is 0.5 eV or more.

Abstract: There is disclosed a light guide for guiding light from a light source in a longitudinal direction and radiating the light to illuminate an object to be illuminated, which includes a diffuser for diffusing the light from the light source along the longitudinal direction of the light guide, and a radiator for radiating the light diffused by the diffuser in a predetermined direction. By arranging the diffuser and the radiator so that a normal line passing through the center of the width of the diffuser is different from the predetermined direction at least in the vicinity of the light source when viewed in the longitudinal direction of the light guide, the illuminance distribution of the longitudinal direction of the light guide is uniformed.