1412results about How to "Improve luminous brightness" patented technology

An oxynitride phosphor consisting of a crystal containing at least one or more of Group II elements selected from the group consisting of Be, Mg, Ca, Sr, Ba and Zn, at least one or more of Group IV elements selected from the group consisting of C, Si, Ge, Sn, Ti, Zr and Hf, and a rare earth element being an activator R, thereby providing a phosphor which is excited by an excitation light source at an ultraviolet to visible light region and which has a blue green to yellow luminescence color that is wavelength converted.

An organic EL device having a low driving voltage and exhibiting high luminous brightness and superior durability, and a method of manufacturing the same. The organic EL device has an anode layer, an organic light-emitting layer, and a cathode layer. An inorganic thin layer, comprising an inorganic compound of Ge, Sn, Zn, Cd, etc. and an inorganic compound of an element of Group 5A to Group 8 in the periodic table in combination, is provided between the anode layer and the organic light-emitting layer and between the cathode layer and the organic light-emitting layer, or the anode layer or the cathode layer comprises a chalcogenide of Si, Ge, Sn, Pb, Ga, In, Zn, Cd, Mg, etc. and an inorganic compound of an element of Group 5A to Group 8 in the periodic table in combination.

Light color beams respectively from LEDs formed on an LED array substrate are allowed to enter one edge of second light guide plates for color mixing, which is arranged to either side of the LEDs. In each of the second light guide plates, color mixing of the respective color light beams occurs with increasing distance from this one edge, and thereby white light is obtained. This white light is guided out through the other edge of the second guide light plate, is reflected by a second reflection plate, and then is allowed to enter either of two opposite edges of a first light guide plate. The white light having entered the first light guide plate is radiated out from a front surface thereof.

Provided is a material for an organic EL device realizing an organic EL device capable of having a high current efficiency even at a low voltage. Provided is a derivative of heterocyclic compound having a nitrogen atom represented by the following general formula (A-1) or (A-2). In the formulae, R1a to R5a each represent a substituent, Ar1a to Ar3a each represent a single bond or a divalent connecting group, and HAr represents a group represented by a general formula (A-3) or (A-4). R6a to R10a each represent a substituent.

The invention discloses an organic electroluminescence touch control panel, a driving method thereof and a display device. On the basis that an original organic electroluminescence structure is not changed, a cathode layer of the organic electroluminescence structure is divided into multiple cathodes independent and insulated from each other, in the touch control stage, the cathodes serve as touch control electrodes to sense external touch control, touch control signals are transmitted to a touch control and display integrated chip via leads, and thus, the touch control function is integrated into organic electroluminescence display of a display panel; and in the reset stage, a pixel driving circuit is used to initialize a control end of a driving module; in the compensation stage, the threshold voltage of the driving module is compensated to avoid influence of the threshold voltage change of the driving module on the luminescence brightness of the organic electroluminescence structure; and in the touch control stage, signals of signal lines and external touch control signals sensed by the touch control electrodes are modulated synchronously to eliminate the parasitic capacitance of the touch control electrodes and improve the touch control performance of the touch control panel.

The invention relates to a niobate or tantalite fluorescent material used for a white light LED and a preparation method thereof. The material comprises the following components: non-doped niobate or tantalite, transition metal doped niobate or tantalite, T1 like ion doped niobate or tantalite with an s2 configuration, rare-earth element doped niobate or tantalite and T1 like ion and rear earth codoped niobate or tantalite. The materials in the invention can be used for the white light LED and related display and lighting devices. The invention has cheap and easy available materials, simple preparation process, stable material chemical property and excellent luminescence performance, and the prepared niobate or tantalite flourescent material is an ideal fluorescent powder candidate material for the white light LED.

The invention provides a large-power intelligent dimming multiple-output power supply for suppressing electric surge with a field-effect transistor. The power supply comprises an electric surge suppression unit, an LLC (Inductor-Inductor-Capacitor) resonance conversion unit, a synchronous rectification unit and more than one constant-current-output intelligent dimming unit, wherein a power resistor in the electric surge suppression unit is connected in parallel with the source electrode and the drain electrode of a field-effect transistor, and the loss of an electric surge suppression circuit is very low due to the extremely small on-resistance of the field-effect transistor so that the whole efficiency of the power supply is improved. The invention acquires the output efficiency up to 95 percent by the optimization design of parameters of an LLC resonance network, the constant-current-output intelligent dimming unit circuit of the invention increases the mean value of the output current by increasing the duty cycle of an output current when sensing infrared rays of a human body; and otherwise, the constant-current-output intelligent dimming unit circuit decreases the duty cycle of the output current but not decreases the peak value while no body passes by so as to ensure LED luminous power and prevent light from scattering over the ground.

A transparent inorganic-oxide dispersion which contains inorganic oxide particles whose surface has been modified with a surface modifier having one or more reactive functional groups and, due to this, enables improvements in refractive index and mechanical properties and retention of transparency; and an inorganic-oxide-particle-containing resin composition obtained by combining and uniting this transparent inorganic-oxide dispersion with a resin through a polymerization reaction. Also provided are: a composition for encapsulating luminescent elements; a luminescent element; a process for producing the resin composition containing inorganic oxide particles; a hard coat and an optical functional film which have high transparency and can attain improvements in refractive index and toughness; an optical lens; and an optical part. The transparent inorganic-oxide dispersion is characterized by comprising a dispersion medium and inorganic oxide particles the surface of which has been modified with a surface modifier having one or more reactive functional groups and which have a dispersed-particle diameter of 1 to 20 nm. It is further characterized in that the surface modifier is one or more members selected from the group consisting of silane coupling agents, modified silicones, and surfactants.

The present invention provides a blue (blue-green) phosphor that has sufficient emission intensity in the wavelength region around 490 nm and that has high emission luminance at a temperature region reached during LED operation. The present invention also provides a white light-emitting device that uses a high-luminance green phosphor having an emission peak wavelength of 535 nm or greater and that has improved bright blue reproducibility.A phosphor having a chemical composition of general formula [1] has sufficient emission intensity in a wavelength region around 490 nm, and a white light-emitting device that uses such a phosphor has improved bright blue reproducibility.(Sr,Ca)aBabEux(PO4)cXd  [1](In general formula [1], X is Cl; c, d and x are numbers satisfying 2.7≦c≦3.3, 0.9≦d≦1.1 and 0.3≦x≦1.2; and a and b satisfy the conditions a+b=5−x and 0.12≦b / (a+b)≦0.4.).

The present invention is a new method and process of preparing long persistance phosphorescent material (noctilucent powder); its characteristic is that the melted thermoplastics is firstly used to enwarp the long persistance phosphorescent material (noctilucent powder), and in later processes, the friction between the long persistance phosphorescent material (noctilucent powder) and metal materials is reduced, the metal pollution is alleviated, and the high luminescent and light plastic master batch of the color long persistance phosphorescent material (noctilucent powder) will be acquired.

The embodiment of the invention provides a display device and a driving method thereof, relates to the technical field of display, and solves the problem that the aging decay of light-emitting components in sub-pixels in a fingerprint identification area is too quick in the prior art, so that the uniformity of display brightness is effectively improved. The display device comprises a display panel, wherein the display panel comprises a substrate, and at least partial area of the display area of the substrate is the fingerprint identification area; the display area is internally provided with aplurality of sub-pixels, and each sub-pixel comprises a first light-emitting component; a plurality of fingerprint identification units are arranged on the side, away from the first light-emitting components, of the substrate, and each fingerprint identification unit comprises a second light-emitting component and at least one light sensation sensor, wherein each second light-emitting component is a micro light-emitting diode, and the projections, on the substrate, of the second light-emitting diodes and the light sensation sensors are positioned in the fingerprint identification area. The display device is used for image display.

The invention related to a structure of luminous pet lead, comprising luminous collar and luminous lead, separately with multiple plastic optical fiber on outer layer and hollow tubule on inner layer, twisted into a long cable; one lamp box respectively connected to the both ends of the cable, and LED luminous source set in the box, LED light can shine through the cross section of plastic optical fiber; additionally, a battery holder set on the lamp box at one end, and battery holder power connected onto the lamp box at the other end through hollow tubule of twisting cable using electrical conductor so that single battery holder can enable LED at both ends of the cable luminous at the same time in order to enhance luminous brightness of plastic optical fiber, and enable pet collar or lead has lighting indication and decoration functions during night use.

A phosphor comprising a CaAlSiN3 group crystal as a host crystal and emitting highly-intense light, a manufacturing method and an application of the same are provided. In the present invention, the phosphor comprises at least lithium (Li), calcium (Ca), silicon (Si), aluminum (Al), oxygen (O), nitrogen (N), and cerium (Ce) elements, and has a CaAlSiN3 crystal or a crystal having the same crystal structure as CaAlSiN3. And a phosphor emitting yellow, orange, or red luminescence can be produced by controlling a composition thereof.

The invention relates to a semitransparent fluorescent powder / glass composite luminescent ceramic wafer and a preparation method thereof. The semitransparent fluorescent powder / glass composite luminescent ceramic wafer is obtained by carrying out 'pelletizing, compression moulding and sintering' on fluorescent powder and low-melting-point glass powder, wherein content of the fluorescent powder is 30-85wt%, and the content of the low-melting-point glass powder is 70-15wt%. The preparation method of the semitransparent fluorescent powder / glass composite luminescent ceramic wafer comprises the following steps: firstly, uniformly mixing fluorescent powder with glass powder in certain proportion, and adding a binding agent required by pelletizing and demoulding, so that pelletized powder of 60-100 meshes is obtained; secondly, carrying out compression moulding on the obtained pelletized powder by virtue of a mould, so that a green body of a certain shape is obtained; thirdly, carrying out heat treatment, namely carrying out glue drainage on the green body for 2-4 hours at the temperature of 300-395 DEG C, and sintering for 1-2 hours at the temperature of 395-410 DEG C, wherein the whole heat treatment process is carried out in the air atmosphere; and finally the fluorescent powder / glass composite luminescent ceramic wafer is obtained.

The invention provides a nitride light-emitting diode (LED) epitaxial wafer and a growing method thereof and relates to the technical field of semiconductor optoelectronics. The nitride LED epitaxial wafer structurally and sequentially comprises a substrate, a low-temperature buffer layer, an unintentionally doped GaN, an N-shaped electron-injection layer, an InGaN / GaN inserting layer, an active area, an electron blocking layer, a u-GaN / p-GaN superlattice and a p-GaN hole-injection layer from bottom to top. The InGaN / GaN inserting layer is grown between the N-shaped electron-injection layer and the active area so as to effective relieve stress of the active area, lower polarization electric fields, reduce limitation of stark effect through a quantum well, and improve luminance and anti-static properties. The u-GaN / p-GaN superlattice is inserted between the electron blocking layer and the P-shaped hole-injection layer so as to improve current expansion capacity and lower chip operating voltage.

Quadreple epitaxial layer composed of first material layer, luminous layer and second material layer is formed on a semiconductor base plate. A euphotic base plate is fixed on surface of the second martial layer. With semiconductor base plate being removed, isolation groove and first extend groove are made under undersurface of first material to penetrate the first material layer and extend to part of volume of second material layer at least. First extend electrode is setup inside first extend groove. The first extend electrode is possible to connect with first electrode positioned at partial surface of the first material layer. Thus, the first electrode is located in nearly same level position to second electrode, which is on surface of other part of the first martial layer in order to carry out next processing easily. The invention increases luminescence are of PN interface, raises luminescence brightness and service life.

The invention relates to an OLED light-emitting device and a manufacturing method of the OLED light-emitting device. The OLED light-emitting device comprises a substrate, a planarization layer and a plurality of light-emitting units, wherein the planarization layer is located on the substrate and provided with a plurality of bending parts which are arranged at intervals; the light-emitting units are located on the planarization layer, and each light-emitting unit is located on the corresponding bending part and has a shape corresponding to that of the bending part. Each light-emitting unit comprises a first electrode, a light-emitting structure located on the first electrode and a second electrode located on the light-emitting structure. A cross section of each bending part has an arc-shaped outline as a whole. According to the OLED light-emitting device and the manufacturing method of the OLED light-emitting device, by arranging the bending parts in the contact positions of the light-emitting units and the planarization layer, the planar planes of the light-emitting units are turned into bending surfaces, the aperture rate of organic light-emitting diodes is substantially increased, light-emitting area is enlarged, and thus the luminance of the OLEDs is improved, power consumption is reduced, and the service life of the product is prolonged.

The invention discloses a multi-shell-structure quantum dot composite particle, and a high-fluorescent-brightness quantum dot probe and a preparation method thereof. The composite particle uses a quantum dot as a core, a semiconductor shell is coated outside the quantum dot, and a composite silicon dioxide shell is coated outside the semiconductor shell. A biological molecule can be connected to the composite silicon dioxide shell to form the probe. The composite particle and probe with required fluorescent wavelength can be obtained by controlling the reaction conditions. The method has strong operability. The obtained composite particle has favorable chemical and physical stability, biocompatibility and environmental stability. The formed probe has high stability and high fluorescent brightness, can have high application value in the fields of medicine and biology, and can be used as a common fluorescent probe, immunologic detection agent or any other biosensor.

The invention discloses a pixel drive circuit and a driving method thereof, and an organic light-emitting display panel. The pixel drive circuit comprises a light-emitting device, a pixel compensation circuit connected with the light-emitting device, a signal input module, and a leakage suppression module. A reset signal terminal is connected with a control electrode of an initialized transistor by the signal input module. The signal input module is used for providing a signal of the reset signal terminal for the control electrode of the initialized transistor under control of the reset signal terminal; and the leakage suppression module is used for increasing a voltage difference between the control electrode of the initialized transistor and a second electrode of the initialized transistor under control of a leakage control signal terminal. On the basis of mutual cooperation of the modules, the signal inputted into an initialized signal terminal by the initialized transistor can be controlled; and the initialized transistor enters a cut-off state by increasing the voltage difference between the control electrode and the second electrode of the initialized transistor. Therefore, formation of a leakage current path of the initialized transistor can be avoided; the brightness of the light-emitting device can be improved; and the scintillation phenomenon can be improved.

The invention relates to an optical conversion luminous film and a preparation method thereof. The optical conversion luminous film is formed by a diffusion film and a mixed paint layer on the diffusion film; the optical conversion luminous film has the thickness of 30-200mum, wherein, the thickness of the diffusion film is 20-70mum; the mixed paint layer is made of 10.000-30.000% of yellow luminous fluorescent material, 0.001-2.000% of red luminous fluorescent material, 60.000-89.000% of polymer resin, 1.000-5.000% of bi-amino silane, 0.000-20.000% of diluting agent and 0.000-5.000% of accessory ingredient. By combining the yellow luminous fluorescent material and the red luminous fluorescent material, the invention can realize the aim of regulating chromaticity coordinate, color temperature and color rendering index, thus preparing the optical conversion luminous film which is made of the fluorescent materials and has the advantages of high color rendering index of the photodiffusion effect, good property of uniform light, anti-dazzle, high light conversion efficiency, low cost, excellent aging characteristic and simple production technique.

The invention relates to the technical field of display and particularly relates to a special-shaped display panel and a display device. <0}{0><}0{>A display area of the special-shaped display panel comprises a special-shaped edge display area close to a non-display area and also comprises a shading structure arranged in the special-shaped edge display area; <0}{0><}0{>the shading structure comprises at least one shading unit which is used for covering an opening area and is positioned at the light emission side of each sub-pixel; <0}{0><}0{>and along the direction from the non-display area tothe display area, the luminous brightness of a plurality of sub-pixels in the special-shaped edge display area is gradually increased. <0}{0><}0{>By virtue of the gradually increased luminous brightness of the sub-pixels in the special-shaped edge display area, poor saw tooth display and color difference of marginal areas of the special-shaped display panel can be improved.

The invention relates to a quantum dot optical film of a multi-layer structure. The quantum dot optical film comprises one or more green quantum dot layers, one or more red quantum dot layers, and separating layers or dichroic mirrors, wherein the green quantum dot layers and the red quantum dot layers are alternatively arranged, and the separating layers or dichroic mirrors are arranged between the green quantum dot layers and the red quantum dot layers. The invention further relates to a preparation method and application of the quantum dot optical film.

The invention provides an LED (Light-Emitting Diode) encapsulated lens with a reflective film. The LED encapsulated lens comprises a plane-convex lens, wherein a reflective film is plated on the bottom plane of the plane-convex lens; and a groove is formed at the center of the bottom plane, so that the groove can be used for containing the LED when the plane-convex lens is encapsulated on a carrier plate of the LED. The reflective film is located on the bottom plane of the LED encapsulated lens, so that the light-emitting luminance of the LED is improved. The encapsulated lens can be matched with an optical filter to select light source wavebands. Furthermore, the encapsulated lens can be matched with an anti-reflection film to increase the light transmittance of the LED.

The invention belongs to the technical filed of conductive thin films, in particular relates to a surface modifying method for improving the surface power function of an indium tin oxide transparent conductive film. The surface modifying method comprises the following steps: a large volume of plasma, containing oxygen, chlorine, or fluorine strong electric negative elements, is generated in a vacuum chamber in a radio frequency or microwave discharge excitation way; sheet glass coated with an indium tin oxide (ITO) thin film is placed on a metal substrate bench which is dipped in the plasma; high voltage negative pulses are applied on the substrate bench, thus forming a negative voltage sheath layer between the ITO thin film and the plasma; oxygen ions are accelerated by an electric field to move toward the surface of the ITO thin film in the sheath layer; and high-energy oxygen ions are injected to the surface of the ITO thin film and reserved in a surface layer of the ITO thin film, so that O / (Sn+In) atom proportion of the surface of the ITO thin film is increased, and then the surface power function of the ITO thin film is improved. The ITO thin film modified by the surface modifying method provided by the invention is applied as an anode of an organic light emitting diode (OLED), in this way, the drive voltage of a component is reduced greatly, the current stability of the component is improved, the light efficiency and brightness are enhanced, and the service life of the component is prolonged.

The invention discloses a preparation method of a composite luminescent fiber nanomaterial. The preparation method comprises the steps: reacting a rare earth complex or a rare-earth-doped nanocrystal with a polymer monomer to form a core-shell structured compound; demulsifying, separating and drying the compound to obtain a rare-earth complex-polymer or rare-earth-doped nanocrystal-polymer composite nanoparticle powder; and preparing the composite nanoparticle power into an electrospinning solution, and preparing the electrospinning solution into the composite luminescent fiber nanomaterial with an electrospining method. The invention provides a new approach to preparation of a rare-earth organic-inorganic composite fiber nanomaterial with good dispersity, high orientation property, strong chemical stability and high luminous efficiency. The composite luminescent fiber nanomaterial is about to achieve important application values in the fields of optical communication, laser, communication and transportation, sailing fire fighting, raining working, bioinstrumentation and biochip, submarine signal transmission and solar photovoltaic cells.

The invention provides a pixel circuit, a display panel and a display device and belongs to the technical field of display. The pixel circuit comprises an adjustment sub-circuit and a drive sub-circuit. The adjustment sub-circuit is connected with a target power end and a drive power end of the drive sub-circuit. The adjustment sub-circuit is used for providing a second drive voltage for the drivepower end of the drive sub-circuit according to a first drive voltage provided by the target power end. The drive sub-circuit is also connected with a data signal end and a light emitting element. The drive sub-circuit is used for outputting a drive current to the light emitting element under the drive of a data voltage provided by the data signal end and the second drive voltage. According to the pixel circuit provided by the invention, light emitting brightness of each pixel in a first display area can be improved, brightness difference between the first display area and a second display area is reduced, and brightness uniformity of the display panel is improved.

The invention discloses a large-size active organic light emitting display panel and voltage driving organic light emitting pixel thereof, which comprise an organic light emitting diode, a data writing circuit, a capacitor, a first transistor, a second transistor, a third transistor and a first switch; among which, the data writing circuit comprises a second switch and a third switch. Compared with the prior structure, the voltage driving organic light emitting pixel of the invention can make up for the deficiency that the difference of the critical voltages between the thin film transistors (TFT) in the low-temperature poly-silicon (LPS) causes the picture to be displayed with Mura on the active organic electroluminescence display, and can improve the deficiency that the IR drop on the panel causes the Mura on the display of the picture and can enhance the stability of the circuit and has larger aperture ratio.

A method of fabricating a LED module by: bonding one or multiple LED chips and multiple conducting terminals to a circuit substrate, and then molding a packing cup on the circuit substrate over by over molding for enabling the LED chip(s) and the conducting terminals to be exposed to the outside of the packing cup, and then molding a lens on the packing cup and the LED chip(s) by over-molding. By means of directly molding the lens on the packing cup and the LED chip(s), no any gap is left in the lens, avoiding deflection, total reflection or light attenuation and enhancing luminous brightness and assuring uniform distribution of output light.

The present invention provides a preparation method of an uniform-size nanoparticle fluorescent microsphere. The density of fluorescent nanoparticle colloidal aqueous solution of the microsphere is adjusted to the micro-mol level so as to obtain the colloidal solution evenly scattered in the aqueous solution; the evenly scattered colloidal solution in the aqueous solution is injected into oil-phase solvent through capillary at the speed of 0.5 to 1.25 percent Vs / min so as to form droplets and Vs is the volume of the oil-phase solvent; the oil-phase solvent adopts bi- or multi-mixture with the solubility between 2 to 10 percent and the density equal to the density of water; containers and reflux pipes adopt the hydrophobic material; the water in droplets is absorbed by the oil phase and the nanoparticles form a dense sphere; an absorbent continuously absorbs the water dissolved in the oil phase, so that the water content in the oil phase is far lower than the saturation; the nanoparticle polymer with the size from dozens of nano to hundreds of nano, the spherical height higher than 5 percent and the size error less than 10 percent is obtained through regulating the density of the quantum pot colloidal solution and the velocity of the reflux pipe.