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OwnerMikiko Matsuo, Tetsuya Satou +2inventors
InventorsMikiko Matsuo, Tetsuya Satou, Hisanori Sugiura, Hitoshi Hisada
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The invention provides a luminescent material that has a wide optimum concentration range, makes the controlling of the concentration easy in mass production processes, and makes it easy to obtain uniformity and reproducibility within the device or between the devices The invention also provides a light-emitting device using the luminescent material and a system using the light-emitting device. In addition, a light-emitting device is provided which shows good color purity, does not reduce current efficiency in the high luminance region, and does not degrade the lifetime characteristics. The luminescent material includes an exciton-forming substance and a luminescent substance. The exciton-forming substance is such that the energy level difference between the excited singlet state and the excited triplet state is 2 eV or lower. The luminescent substance is such that the energy level of the excited singlet state is equal to or lower than the energy level of the excited triplet state of the exciton-forming substance.
An exciton-forming substance, wherein an energy level difference between an excited singlet state and an excited triplet state is 2 eV or lower.
An exciton-forming substance, wherein an energetically stable configuration in a cation radical state and an energetically stable configuration in an excited state resemble each other, and wherein a transition from the cation radical state to the excited state is energetically advantageous.
An exciton-forming substance, wherein an energetically stable configuration in a cation radical state and an energetically stable configuration in an excited triplet state resemble each other, and wherein a transition from the cation radical state to the excited triplet state is energetically advantageous.
A luminescent material, comprising:
A luminescent material, comprising:
A luminescent material, comprising:
A method of producing luminescence in a luminescent substance, comprising:
A method of producing luminescence in a luminescent substance, comprising:
A light-emitting device comprising an anode, a cathode, and a luminescent layer sandwiched between the anode and the cathode, wherein the luminescent layer contains a luminescent material, the luminescent material comprising:
A light-emitting device comprising an anode, a cathode, and a luminescent layer sandwiched between the anode and the cathode, wherein the luminescent layer contains a luminescent material, the luminescent material comprising:
A light-emitting device comprising an anode, a cathode, and a luminescent layer sandwiched between the anode and the cathode, wherein the luminescent layer contains a luminescent material, the luminescent material comprising:
A light-emitting device comprising an anode, a cathode, and a luminescent layer sandwiched between the anode and the cathode, wherein the luminescent layer is of a multilayer structure, the multilayer structure comprising:
A light-emitting device comprising an anode, a cathode, and a luminescent layer sandwiched between the anode and the cathode, wherein the luminescent layer is of a multilayer structure, the multilayer structure comprising:
A light-emitting device comprising an anode, a cathode, and a luminescent layer sandwiched between the anode and the cathode, wherein the luminescent layer is of a multilayer structure, the multilayer structure comprising:
A light-emitting device comprising an anode, a cathode, and a luminescent layer sandwiched between the anode and the cathode, the luminescent layer emitting light by electron-hole recombination, wherein:
A light-emitting device comprising an anode, a cathode, and a luminescent layer sandwiched between the anode and the cathode, wherein the luminescent layer comprises:
A light-emitting device comprising an anode, a cathode, and a luminescent layer sandwiched between the anode and the cathode, wherein the luminescent layer comprises:
A display device comprising an image signal output portion for generating image signals, a driving portion for generating an electric current in accordance with the image signals generated by the image signal output portion, and a luminescence portion for emitting light in accordance with the electric current generated by the driving portion, wherein:
A lighting system comprising a driving portion for generating an electric current and a luminescence portion for emitting light in accordance with the electric current generated by the driving portion, wherein:
Dependencies are inferred from the claim text.