摘要:
Provided is an organic light emitting device with enhanced durability during continuous driving. The organic light emitting device includes: an anode, a cathode, and an organic compound layer being placed between the anode and the cathode and including at least a hole transport layer and an emission layer, in which: the emission layer contains a blue light emitting material; the hole transport layer contains a plurality of kinds of organic compounds; and an organic compound having the smallest ionization potential among the organic compounds includes a compound having no absorption spectrum peak in a blue color wavelength region in a radical cation state.
摘要:
An organic light-emitting device is provided which has an optical output with a high efficiency, a high luminance and a long life and which includes a pair of electrodes including an anode and a cathode, and at least one layer comprising an organic compound provided between the pair of electrodes, wherein at least one layer having a light-emitting region of the at least one layer comprising the organic compound comprises a first compound represented by the general formula (1): and a second compound having a bandgap larger than a bandgap of the first compound.
摘要:
It is an object of the present invention to provide an organic light emitting device having a long-life optical output. The organic light emitting device according to the present invention is provided with an emission layer including at least a host material, a light emitting material, and another material, wherein the another material has a smaller ionization potential than and almost the same hole mobility as or a greater hole mobility than an ionization potential and a hole mobility of a compound which forms an emission layer-side-interface.
摘要:
There is provided an organic electroluminescent display apparatus including a plurality of pixels constituting a display portion, each of the pixels includes sub-pixels of at least four colors, each of which includes an organic electroluminescent device having a pair of the electrodes and an organic compound layer formed between the pair of the electrodes, and the sub-pixels of at least four colors constitute a convex polygon containing a white color on CIE chromaticity coordinates, and includes the sub-pixels of two colors to be complementary colors with the white color interposed therebetween. In this case, the organic compound layers of the sub-pixels of two colors each contain a phosphorescent organic compound. The organic electroluminescent display apparatus can enlarge the color gamut and simultaneously can reduce the power consumption.
摘要:
There is provided an aminoanthryl derivative-substituted pyrene compound represented by the following general formula (1). The compound is useful as a compound for an organic light-emitting device exhibiting highly pure luminescent color, and an optical output with high efficiency, high luminance, and long life.
摘要:
It is an object of the present invention to provide an organic light emitting device having a long-life optical output. The organic light emitting device according to the present invention is provided with an emission layer including at least a host material, a light emitting material, and another material, wherein the another material has a smaller ionization potential than and almost the same hole mobility as or a greater hole mobility than an ionization potential and a hole mobility of a compound which forms an emission layer-side-interface.
摘要:
There is provided an organic electroluminescent display apparatus including a plurality of pixels constituting a display portion, each of the pixels includes sub-pixels of at least four colors, each of which includes an organic electroluminescent device having a pair of the electrodes and an organic compound layer formed between the pair of the electrodes, and the sub-pixels of at least four colors constitute a convex polygon containing a white color on CIE chromaticity coordinates, and includes the sub-pixels of two colors to be complementary colors with the white color interposed therebetween. In this case, the organic compound layers of the sub-pixels of two colors each contain a phosphorescent organic compound. The organic electroluminescent display apparatus can enlarge the color gamut and simultaneously can reduce the power consumption.
摘要:
A recording apparatus for forming a color image on the recording material. The recording apparatus includes a recording head having a plurality of recording elements; recording head driving units for driving the recording elements of the recording head in accordance with image data to form an image on the recording material; a plurality of supplementing units for effecting supplementations, in different manners, for supplementing defects in a recorded image resulting from a non-operating recording element of the recording elements; and control units for selectively operating the plurality of supplementing units depending on a record image to effect the supplementation.
摘要:
A recording system can take the form of a recording apparatus, a recording method or a program to control the recording apparatus for recording a color image on a recording medium by utilizing a recording head on which a plurality of recording elements are arranged. The recording system uses a plurality of compensation methods to compensate a position to be recorded by a recording element which does not execute a recording operation among the plurality of recording elements and selects an appropriate compensation method. Such recording system can resolve nonuniformity in the recorded image such as white streaks and the like generated by non-eject dots and can make the nonuniformity be unrecognized by the human eye. In addition, the recording system can suppress increase in costs of the recording head and can significantly increase recording rates.
摘要:
A printing apparatus and a printing method define an achromatic region and a chromatic region of image data. The image data is defined as an achromatic region when a difference between a maximum and a minimum values among R, G, B values corresponds to 1% to 10% of a range of values that R, G, B values are obtainable. In the achromatic region, the number of black and its derivative ink dots to be ejected per one pixel is 4 dots at the maximum. A chromatic region is defined as an area where does not satisfy the requirements of the achromatic region. In the chromatic region, the number of black and its derivative ink dots to be ejected per one pixel is 1 dots at the maximum.