128 results about "Dual emission" patented technology

In a conventional display device comprising a sub-display, the display device is increased in thickness and in the number of components as the number of displays is increased. In the present invention, a dual emission display device is used so that either surface of a display is used as a main display or a sub-display. Accordingly, the display device can be reduced in thickness and in the number of components. Further, mechanical reliability can be enhanced when the invention is applied to a tablet PC, a video camera and the like.

Disclosed is a display device including a pixel portion having a plurality of pixels which have a display element and a transmissive portion. The display element includes a light-emitting element which does not transmit external light, while the transmissive portion is arranged to transmit external light. In the display element, a top-emission or bottom-emission type light-emitting element is provided. On the other hand, no light-emitting element or a dual-emission type light-emitting element which possesses an EL layer interposed between two light-transmissive electrodes is provided to the transmissive portion. The emission color of the display element is controlled by a color filter which overlaps with the light-emitting element in the display element, while no color filter is given to the transmissive portion.

The invention relates to a dual emission rate type fluorescent probe for visually detecting carbon dots-Au nanoclusters of mercury ions and a preparation method. Dual-emission composite silicon dioxide nanoparticles are composite silicon dioxide nanoparticles formed by utilizing carbon dot covered silicon dioxide particles as cores and covalently coupling the surfaces of the carbon dot covered silicon dioxide particles with the Au nanoclusters after surface amination. The carbon dots located in the silicon dioxide nanoparticle cores are taken as reference fluorescence signals, the Au nanoclusters on the outer layers are taken as response fluorescence signals, and the signals are used for Hg<2+> selective recognition. The Au nanoclusters as the response fluorescence signals are connected to the surface of a silicon layer through covalent bond connection, and one stable nano-fluorescent probe is formed. When the dual-fluorescence composite nanoparticles are taken as the rate type fluorescent probes, the intensity of the carbon dot fluorescence signals in the cores basically keep unchanged, and the Au nanoclusters on the outer layers can be bonded with Hg<2+> selectively so as to result in fluorescence quenching of the Au nanoclusters on the outer layers.

There is a problem in a dual emission device emitting light out of both surfaces that an image on the surface and an image on the rear surface are different from each other (either image is mirror-reversed). A dual emission device is disclosed in which either light emitted from the light-emitting device is reflected by glass including a semi-transmissive film to display on glass an image same as another image obtained also from the light-emitting device, and simultaneously, external information can be viewed through the glass. A mirror can be arranged between the dual emission device and the glass including a semitransparent film.

An organic light-emitting display device and a method of manufacturing the organic light-emitting display device. The organic light-emitting display device is a dual emission display capable of displaying differing images on either side of the display, and includes a facing electrode that is selectively deposited in the first area but not in the second area, the selectivity being brought about by a varying an underlying material having differing adhesive forces with the material of the facing electrode. In addition, the underlying materials of the facing electrode and other intermediate layers of the organic light emitting diode device provide extra distance between the organic light emitting layer and a reflective electrode, so that exciton quenching is reduced, resulting in improved light emitting efficiency.

The invention discloses an oil-soluble Mn-doped CsPb(Cl/Br)3 dual-emission nanocrystal and a preparation method thereof. The preparation method comprises the following steps: (1) synthesizing an all-inorganic CsPbBr3 perovskite nanocrystal precursor; and (2) carrying out halide-ion-exchange-assisted Mn-to-Pb ion exchange. The preparation method is carried out at room temperature, is simple in process and easy to operate, has the advantages of convenient raw material supply and low raw material price, can be completed in a common chemical laboratory, and thus, is easy to popularize. The Mn-doped CsPb(Cl/Br)3 nanocrystal has two emission peaks (perovskite intrinsic emission and Mn ion emission). The Mn-doped CsPb(Cl/Br)3 dual-emission nanocrystal obtained by the preparation method has high 56% fluorescence quantum yield, and can be used for manufacturing ratiometric temperature probes by utilizing the dual-peak-intensity temperature dependence characteristic.

A dual emission display comprises a first substrate, a second substrate, a first electroluminescent device (ELD), a second electroluminescent device and a touch sensitive device. The first ELD and the second ELD are disposed on the first substrate and the second substrate, respectively. During assembly of the dual emission display, the first substrate is substantially opposite to the second substrate, and the touch sensitive device is integrated between the first ELD and the second ELD for providing the function of touch screen.

The invention relates to the technical field of preparation of bio-functional materials, in particular to dual-emission fluorescent molecularly imprinted polymer nanoparticles and a preparation methodand application thereof. carbon quantum dots are coated with silica nanospheres to form a core of a ratio fluorescence probe; red cadmium telluride quantum dots are used as response signals, acrylamide and 4-vinylbenzeneboronic acid are used as bifunctional monomers, N,N-methylene bisacrylamide is used as a crosslinker, dopamine is used as templating molecules, dual-emission fluorescent molecularly imprinted polymer nanoparticles having specific recognition sites for dopamine are synthesized in an alcohol phase under initiating of azodiisobutyronitrile, and fluorescent detection test paper with visualizing effect is prepared then by means of impregnating so as to provide visual detection for DA (dopamine); the fluorescent detection test paper is applied to the detection of DA in a human serum sample, and the results prove that the fluorescent detection test paper prepared herein is suitable for half-quantitative detection of DA in actual complex samples.

The invention belongs to the field of composite functional materials and particularly relates to a color-tunable fluorescent carbon quantum dot/Eu<3+>/mesoporous alumina composite luminescent material, preparation thereof and application of the carbon quantum dot/Eu<3+>/mesoporous alumina composite luminescent material in the aspects of temperature sensing and optical devices. The composite luminescent material comprises fluorescent carbon quantum dots, of which surfaces contain hydroxyl or amino, and trivalent-europium-doped mesoporous alumina. According to the composite luminescent material, rare-earth trivalent europium, which emits red light under an ultraviolet lamp, and the fluorescent carbon quantum dots which emit blue light are doped into pore passages of the mesoporous alumina, then, composite fluorescent powder with dual emission peaks is obtained, and the ratio of fluorescence intensity of the two emission peaks in a relatively wide temperature range has a good linear relationship and stability, so that the rapid and effective detection and sensing of temperature can be excellently achieved, and the composite luminescent material can be applied to the aspect of temperature sensing. Due to a tunable color, the composite luminescent material can also be applied to the optical devices.

A kind of fluorescent powder is based on metal sulfoxide, Eu2+ and Cu2+ are co-activators, and other ions are sensitizers. aA, bB, cC, dD, eE. Among them: A is one or two of Y3+, La3+, Ce3+, Pr3+, Nd3+, Sm3+, Gd3+, Tb3+, Dy3+, Ho3+, Er3+, Tm3+, Yb3+, Lu3+; B is Bi3+, Sb3+, Mn2+, Pb2+ One or two; C is one or two of F-, Cl-, Br-, I-; D is one or two of Se2-, Te2-. E is one or more of Li+, Na+, K+, Rb+, Cs+, Ag+ and H3BO3. The phosphor has a broadband dual excitation spectrum and a broadband dual emission spectrum, the dual excitation band spectrum is located in the 200-425nm and 425-610nm area, and the dual emission band spectrum is located in the 400-550nm and 600-750nm area. Phosphors can be used in agricultural films, solar photovoltaic cells and LED devices.

A dual emission display includes a substrate, a first light emitter, a second light emitter and a cap. The two light emitters are disposed on the substrate. The first light emitter has a first light-emitting direction. The second light emitter is adjacent to the first light emitter, and has a second light-emitting direction. The cap is located on the first emitter and the second emitter, and is separated from one of the first emitter and the second emitter by a distance ranging from about 1 μm to 100 μm.

The invention discloses a dual-color fluorescence quantum dot embedded ratiometric probe and a preparation method thereof; the ratiometric probe takes red quantum dots as a core, the red quantum dots are embedded in silica nanoparticles, then the surface of the red quantum dot embedded silica nanoparticles is subjected to sulfhydrylation, then green quantum dots are grown in-situ on the sulfhydrylation silica surface, and composite nanoparticles with dual emission wavelengths are obtained; finally, the surface of the composite nanoparticles with the dual emission wavelengths is coated with a silica nanoparticle layer, and thus the dual-color fluorescence quantum dot embedded ratiometric probe is obtained. The red ray emitted quantum dot embedded silica nanoparticles are prepared by a reverse microemulsion method; compared with a stober method, the silica nanoparticles have better dispersion; moreover, the quantum dots are made into an alkali solution for incubation, the fluorescence properties are improved, and the silica nanoparticles coating the particle surface improve the specificity and stability of the dual-emission fluorescence ratiometric probe.

The invention provides a preparation method of a pH-sensitive dual-emission carbon quantum dot, and belongs to the technical field of nanomaterials. The pH-sensitive dual-emission carbon quantum dot is prepared from a common organic micro-molecule by using a solvothermal reaction through changing a traditional production process, and has emission peaks at 445 nm and 555 nm respectively, the fluorescence intensity and the fluorescence peak position change with the pH environment, and when the pH value increases, the emission peak at 555 nm weakens, the emission peak at 445 nm strengthens, the fluorescence becomes blue from blue green, and the pH-sensitive dual-emission carbon quantum dot is easily applied to the fields of pH sensors and cell fluorescence imaging, and an organic composite film produced after compounding the pH-sensitive dual-emission carbon quantum dot with an organic polymeric matrix can be applied to fluorescence sensing of acidic and alkaline solvents or gases I orderto carry out food detection.

The invention relates to a preparation method of a dual-emission colorimetric fluorescence nano-microsphere and application of the nano-microsphere in bacterial detection, belonging to the technical field of colorimetric sensing. A SiO2 nano-microsphere loaded with blue fluorescence carbon dots (CDs) and red fluorescence Cu NCs prepared in situ by virtue of an assembling method and has a dual-emission fluorescence effect, namely that the nano-microsphere presents 450-nm blue fluorescence and 650-nm red fluorescence in a visible light region. The nano-microsphere has a specific response effectto the pH value, the red fluorescence of the nano-microsphere gradually weakens along the change of the pH value from 4.0 to 7.2, and meanwhile, the blue fluorescence remains unchanged, so that the visual colorimetric detection of the change of the pH value can be realized through the color change of compound light. A dual-emission colorimetric fluorescence nano-microsphere probe can be used for detecting the pH value of a bacterial metabolism system so as to acquire the breeding amount of bacteria, and the biofluorescence imaging of the bacteria can be realized in a relatively high signal tonoise ratio. The nano-microsphere can be separated from a detection system through a simple centrifugal operation, so that the environmental pollution caused by a probe material can be reduced.

The invention relates to a method for detecting phosphate ions based on a dual-emission europium metal organic framework material. The dual-emission lanthanide europium metal organic framework material is used as a ratio-type fluorescence probe for being applied to high-selectivity high-sensibility detection of the phosphate ions. The chemical general formula of the adopted dual-emission lanthanide europium metal organic framework material is [Eu2(L)2(H20)2(DMF)2], wherein a Eu2O2 cluster is used as an inorganic node, a rigid asymmetric tricarboxylic acid ligand terphenyl-3,4'',5-tricarboxylicacid (H3L) is used as an organic bridging ligand, and preparation is successfully conducted by means of a simple and convenient one-pot solvothermal technology. The invention further discloses application of the metal organic framework material in the aspect of selectively detecting phosphate anions. In a detecting process, along with increase of the content of the added phosphate anions, obviouscolor change from pink to purple which is easily observed with naked eyes is presented under radiation of an ultraviolet lamp, and thus the detecting process becomes more convenient and practical.

There is provided a microscope device comprising: means for creating a collimated beam of light collected from a sample and comprising at least a first spectral range and a second spectral range, means for separating the collimated beam into a first beam containing a higher percentage of light of the first spectral range than light of the second spectral range and a second beam containing a lower percentage of light of the first spectral range than light of the second spectral range, means for reflecting the first beam, means for reflecting the second beam, means for combining the first beam and the second beam, a detector, and means for imaging the combined first and second beam onto the detector in order to create an image of the sample on the detector, wherein the means for reflecting the first beam and the means for reflecting the second beam are arranged in such a manner that the image created by the first beam and the image created by the second beam are shifted relative to each other on the detector, wherein the means for reflecting the first beam is adapted to invert handedness of the first beam, and wherein the means for reflecting the second beam is adapted to preserve handedness of the second beam.

A dual emission type display panel has a front viewing surface and a rear viewing surface. The dual emission type display panel includes a substrate, first, second, and third top emission pixel units, and first, second, and third bottom emission pixel units. The substrate has first and second unit regions. The first, second, and third top emission pixel units, and the first, second, and third bottom emission pixel units are located on the substrate. A first top emission pixel unit, a first bottom emission pixel unit, a second top emission pixel unit, and a second bottom emission pixel unit are located in each first unit region. A third top emission pixel unit, a third bottom emission pixel unit, a second top emission pixel unit, and a second bottom emission pixel unit are located in each second unit region.