55results about How to "Extended glow time" patented technology

Disclosed is an improved light-emitting device for an AC power operation. A conventional light emitting device employs an AC light-emitting diode having arrays of light emitting cells connected in reverse parallel. The arrays in the prior art alternately repeat on / off in response to a phase change of an AC power source, resulting in short light emission time during a 1 / 2 cycle and the occurrence of a flicker effect. An AC light-emitting device according to the present invention employs a variety of means by which light emission time is prolonged during a 1 / 2 cycle in response to a phase changeof an AC power source and a flicker effect can be reduced. For example, the means may be switching blocks respectively connected to nodes between the light emitting cells, switching blocks connectedto a plurality of arrays, or a delay phosphor. Further, there is provided an AC light-emitting device, wherein a plurality of arrays having the different numbers of light emitting cells are employed to increase light emission time and to reduce a flicker effect.

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 display device and a pixel circuit and a display driving method thereof. According to the display device and the pixel circuit thereof, threshold voltage information of a driver transistor and a light-emitting element is extracted from a threshold extraction frame in a current bias manner, and data voltage is written into a driving frame in a capacitive coupling manner, so that driving current passing through the light-emitting element is irrelevant to the threshold voltage information, threshold voltage drift of both transistors and the light-emitting element or nonuniformity of threshold voltage of all the transistors of a display panel is accurately compensated, and grey information (data voltage) is written in a voltage programming manner to realize quick data input. Besides, in the display driving method, one display driving period is divided into one threshold extraction frame and a plurality of driving frames, so that the ratio of the lighting time to the threshold extraction time of the light-emitting element is increased.

The present invention relates to an OLED pixel driving circuit which has a data input unit for sending out controlling signals, a voltage storage unit for storing voltages from a first power source, a driving unit for receiving the controlling signals from the data input unit to selectively activate the voltage storage unit, a second power source providing a voltage to be stored in the voltage storage unit; and a switch connected to the second power source to offset potential loss of the first power source from the voltage stored in the voltage storage unit. The compensation circuit can not only compensate the non-uniformity of the threshold voltage but also eliminate the non-uniformity of the OLED display caused by the power IR drop, so that the effect of display of the OLED are maximally improved.

The embodiment of the invention provides a signal output circuit, a driving IC, a display device and a driving method thereof, relates to the technical field of display, and can improve the display effect. The signal output circuit comprises a receiving unit and an initial signal output unit; the receiving unit is configured to receive an indication signal indicating an image refresh frequency, wherein the refresh frequency is one of at least two set refresh frequencies; the initial signal output unit is configured to output initial signals in one-to-one correspondence with the refresh frequencies for different refresh frequencies according to the indication signal, wherein the initial signals comprise a pulse in each repetition duration, and the repetition durations of the different initial signals are the same; for different starting signals, the duty ratios of other pulses except the first pulse in each frame of time are the same fixed value; the refresh frequency of the first pulsein each frame of time is inversely proportional to the duty ratio under the condition that the low level is effective, and the refresh frequency is directly proportional to the duty ratio under the condition that the high level is effective.

A color sequential display and a light source control method of the color sequential display are provided. The light source control method includes the following steps. A frame data of a frame period is received, wherein the frame period includes a plurality of color sub-frame periods. The frame data is analyses to obtain gray distributions of a plurality of colors in the frame data. Whether all or a portion of a plurality of color light sources of the color sequential display are turned on in the frame period is determined according to the gray distributions of the colors. Wherein, a light emitting time of the turned on color light source is longer than any one of the color sub-frame periods. Therefore, the brightness displayed by the color sequential display can be enhanced.

The invention provides a frame scanning pixel display drive unit as well as a drive method and a display method thereof. The frame scanning pixel display drive unit comprises a drive transistor used for driving pixel display, a data writing module and a drive control module, wherein the drive control module is used for receiving a first frame data signal sent by the data writing module and controlling the drive transistor to drive the pixel display according to the first frame data signal; the data writing module is used for receiving, locking and storing a second frame data signal when the drive transistor drives the pixel display according to the first frame data signal and sending the second frame data signal to the drive control module after the first frame data signal is displayed; and the second frame data signal is a next frame data signal of the first frame data signal. The frame scanning pixel display drive unit forms a frame scanning display manner, so that the energy consumption can be reduced at a signal writing stage, and the power consumption for panel display is effectively reduced.

The purpose of the present invention is to provide an LED driving circuit with which it is possible to easily manage the color temperature by adjusting light. An LED driving circuit, characterized in having: a first LED group in which a plurality of first LEDs are serially connected, the first LED group contributing to emission of light having a first color temperature; a second LED group in which a plurality of second LEDs are serially connected, the second LED group contributing to emission of light having a second color temperature; a third LED group in which a plurality of second LEDs are serially connected, the second LED group contributing to emission of light having the second color temperature; and a control unit for switching, in response to an increase in a rectified output voltage, from illumination of only the first LED group to illumination of only the second LED group and then from illumination of only the second LED group to illumination of the second LED group and the third LED group, the number of first LEDs included in the first LED group being less than the number of second LEDs included in the second LED group.

Disclosed herein is an AC light emitting diode. The light emitting diode comprises a plurality of light emitting cells two-dimensionally arranged on a single substrate. Wires electrically connect the light emitting cells to one another to thereby form a serial array of the light emitting cells. Further, the light emitting cells are spaced apart from one another by distances within a range of 10 to 30 D, and the serial array is operated while connected to an AC power source. Accordingly, the excellent operating characteristics and light output power can be secured in an AC light emitting diode with a limited size.

A solar spike lamp with long-lasting phosphor materials comprises a housing (1), the long-lasting phosphor materials (2), one or more LED light sources (3), a power storage element (4), a solar photovoltaic device (5), a control circuit board (6), optical elements (7), retroreflective materials (8) and package resin (9), wherein the control circuit board (6) intermittently supplies power to the one or more LED light sources (3) at a certain duty ratio or at a certain cycle. According to the solar spike lamp with the long-lasting phosphor materials, the stroboflash fluctuation depth is reduced by utilizing the long-lasting energy storage luminescence characteristic, and the power consumption of the power storage element (4) is reduced by reducing the duty ratio or lengthening the period; based on the principle, the novel all-weather solar spike lamp with stronger functions and higher safety and environmental protection property can be designed and manufactured, not only is the original function improved, but also the auxiliary illuminating lamp function is integrated under the condition of not increasing the power consumption, and thus the application range is expanded greatly.

A display apparatus is provided. The display apparatus includes a display configured to include a plurality of pixels and to display an image frame by emitting light from the plurality of pixels by pixel, and a controller configured to adjust one of pixel brightness and a light emitting time for at least a portion of the plurality of pixels according to properties of the input image frame, and compensate the luminance of the image frame by adjusting the other one of the pixel brightness and the light emitting time to correspond to the adjusted pixel brightness or adjusted light emitting time.

Methods for extending light-emitting time of a solution of a calcium-binding photoprotein that instantaneously emits light by binding to calcium ions are provided. In the light-emitting reaction system of a solution of a calcium-binding photoprotein, a light-emitting reaction is performed in the presence of an anion capable of binding to the calcium ion or the cation that can be substituted for the calcium ion and / or a cation that can bind to the calcium-binding site of the calcium-binding photoprotein with a lower affinity than the calcium ion or the cation that can be substituted for the calcium ion without activating the calcium-binding photoprotein.

To provide a novel light-emitting element or a highly reliable light-emitting element. To provide a light-emitting device, a display device, an electronic device, and a lighting device each of which can be manufactured at a low cost. To provide a light-emitting element including an anode, a cathode, and an EL layer between the anode and the cathode. The EL layer includes a light-emitting layer and an electron injection transport layer between the light-emitting layer and the cathode, and the amount of a halogen detected from a material forming the electron injection transport layer is less than or equal to 30 ppm.

A plasma display panel and a driving method thereof that are capable of improving the discharge efficiency and the brightness. In the panel, sustaining electrodes are formed at the boundary portions between the discharge cells. Trigger electrodes are formed at the inner sides of the discharge cells. Lattice-shaped barrier ribs are formed in such a manner to surround the discharge cells. The method of driving the panel includes a reset period, an address period and a sustaining period. In the method, a reset pulse is applied to the sustaining electrodes during the reset period. A scanning pulse is applied to the trigger electrodes during the address period. A first sustaining pulse is applied to the trigger electrodes during the sustaining period. A second sustaining pulse is applied to the sustaining electrodes in such a manner to be alternate with the first sustaining pulse. Accordingly, the PDP causes a sustaining discharge using three electrodes within the discharge cell to increase a discharge frequency per sustaining pulse into two time in comparison to the prior art and to make a long-distance discharge and an enlargement of light-emission area, thereby realizing a high efficiency and a high brightness.

The invention discloses a low-cost energy storage luminescent paint and a preparation method thereof. The low-cost energy storage luminescent paint is prepared from, by weight, 30-50 parts of silicondioxide microspheres, 2-3 parts of a coupling agent, 20-30 parts of luminous powder, 10-25 parts of polyvinyl alcohol, 15-25 parts of an acrylic acid emulsion, 10-20 parts of a styrene-acrylic emulsion, 0.5-1 part of a wetting agent, 1-5 parts of dihydroxypropane, 0.1-0.2 part of an antifoaming agent, 0.05-2 parts of a dispersing agent, 0.2-0.5 part of talcum powder, 0.1-0.5 part of a water repellent, 0.1-0.5 part of a coalescing agent, 0.1-0.5 part of a thickening agent, 0.1-0.5 part of a pH adjuster and 10-15 parts of water. The low-cost energy storage luminescent paint and the preparation method thereof have the advantages that fluorescent powder is embedded in the silicon dioxide microspheres, and the surfaces of the silicon dioxide microspheres are modified with the polyvinyl alcohol,so that not only is the luminous efficiency of the fluorescent powder improved, but also the stability of the fluorescent powder is improved, the service life and lighting time of the paint are prolonged, the environmental friendliness is achieved, the brightness of the coating is high, the persistence time is long, the adhesion and corrosion resistance are good, and the application prospects aregood.

The invention provides a polyester resin extruding light-emitting plate and a preparation method thereof. The polyester resin extruding light-emitting plate comprises the following components in percentage by weight: 60%-90% of thermoplastic polyester resin, 3%-15% of light-emitting agents, 5%-35% of high-refractive index superfine hollow glass microspheres, 1%-5% of silane coupling agents and 0.5%-4% of octadecanamide lubricating agents, wherein the thermoplastic polyester resin is polyethylene terephthalate; and the light-emitting agents are aluminate and / or silicate light-emitting agents activated by using rare-earth. The polyester resin extruding light-emitting plate provided by the invention overcomes the defects of the prior art, is optimized in formula component and reduced in cost, is a high-brightness and long-afterglow novel environment-friendly energy-saving product, has the characteristics of excellent light absorption, light storage and self illumination, has the advantages of good physical and chemical property, flame retardancy, weather resistance, corrosion resistance, nontoxicity, harmlessness and no radiation, greatly enhances the light-emitting brightness, greatly prolongs the afterglow time, has good cost advantage, can be produced on a large scale, is energy-saving and environment-friendly and wide in application range and has excellent social and economic value.

The invention discloses an energy-storage type long-lasting phosphor material and a preparation method thereof. According to the preparation method, after multiple metal oxides are respectively doped with manganese element, multiple oxide superfine particle powder raw materials are prepared; and then the multiple oxide superfine particle powder raw materials are uniformly mixed, and the obtained mixture is roasted so as to obtain an energy-storage type long-lasting phosphor material. The preparation process is low in energy consumption, and the prepared phosphor material is non-toxic, non-radioactive, low in excitation conditions, high in optical storage speed, high in afterglow brightness, long in afterglow time, stable in luminescence property, and wide in application scope.

The invention belongs to the technical field of application of fluorescent carbon nano materials, and particularly relates to application of a fluorescent material based on fluorescent carbon dots inchemiluminescence. The fluorescent material is a combination of fluorescent carbon dots and a bis(oxalate)-hydrogen peroxide system, replaces traditional fluorescent dye macromolecules to realize high-brightness and long-lifetime chemiluminescence of the bis(oxalate)-hydrogen peroxide system, avoids contact carcinogenicity of the fluorescent dye macromolecules, and has good biocompatibility and environmental safety. The fluorescent carbon dots can be prepared by a hydrothermal method or a microwave method, and the fluorescent material can be applied to chemiluminescence cold light sources, chemiluminescence analysis or chemiluminescence imaging, and has the advantages of low biotoxicity, high detection sensitivity and high imaging sensitivity.

A luminescent yarn and a manufacturing method thereof. The luminescent yarn is a multilayered structure, a cross-section of the yarn includes a main body and at least one luminescent surface layer having multiple luminescent particles and positioned on at least one surface of the main body. Accordingly, the luminescent surface layer is positioned on the surface of the luminescent yarn to directly absorb energy and emit luminescence, whereby the luminescent yarn has better luminance and longer luminescence-emitting time. The manufacturing method of the luminescent yarn includes steps of: manufacturing a film material, the film material having a substrate material and at least one luminescent layer disposed on at least one surface of the substrate material; and cutting the film material to form the luminescent yarn.

Disclosed are smoothing phosphors for AC LED lighting that are capable of prolonging the light emission time of an AC LED (or array of AC LEDs) during a ½ cycle response to a phase change of the alternating current to substantially reduce flicker. The smoothing phosphor of the present teachings comprises a matrix represented by the formula: M(1−k−r−v)X(m−p)Al2(n−0.5x−0.5y)O2(n−0.5x−0.5y):Mn(n+p)O(x+p), SiyO2y, Euk, Rr, Liv wherein M is at least one of La2O3, Ce2O3, Gd2O3, Lu2O3, Ba2OF2, Sr2OF2, Ca2OF2, Ba2OCl2, Sr2OCl2, Ca2OCl2, BaO, SrO, CaO, or ZnO; provided that when M comprises BaO, SrO, CaO, or ZnO, M does not comprise La2O3, Ce2O3, Gd2O3, Lu2O3, Ba2OF2, Sr2OF2, Ca2OF2, Ba2OCl2, Sr2OCl2, or Ca2OCl2; X is at least one of MgO or ZnO; R is at least one of Sm, Pr, Tb, Dy, Er, or Ho; m=0 to 2; n=4 to 11; x=0.005 to 1; y=0.005 to 1; p=0 to 1; k=0 to 0.2; r=0 to 0.2; and v=0 to 0.2.

The invention discloses a noctilucent tire and a processing technology thereof. Belonging to the field of tire materials, the invention aims to provide a luminous tire firstly. The key point of the technical scheme is that the medicine is prepared from, by weight, wherein the raw materials comprise 25-35 parts of isoprene rubber; 20-40 parts of natural rubber, 15-25 parts of butadiene rubber, 15-25 parts of ethylene propylene diene monomer, 30-50 parts of white carbon black, 8-14 parts of rubber operating oil, 2-6 parts of zinc oxide, 1-5 parts of stearic acid, 1-3 parts of a white carbon black active agent PEG, 0.8-3.2 parts of protective wax, 0.5-1.5 parts of an anti-aging agent, 55-75 parts of fluorescent powder, 1.8-5.0 parts of an accelerant and 1.4-2.2 parts of sulfur. The effect offully emitting light at night is achieved. Secondly, the invention is to provide the processing technology of the noctilucent tire. The processing technology comprises the following steps: S1, mixingprocess; s2, extrusion; s3, calendering; s4, tire bead forming; s5, cord fabric cutting; s6, bead filler pasting; s7, belt ply shaping; s8, tire forming; and S9, vulcanization to form the finished tire. The effects that the tire can emit light at night, and the tire can keep good wear resistance are achieved.

To provide a novel light-emitting element or a highly reliable light-emitting element. To provide a light-emitting device, a display device, an electronic device, and a lighting device each of which can be manufactured at a low cost. To provide a light-emitting element including an anode, a cathode, and an EL layer between the anode and the cathode. The EL layer includes a light-emitting layer and an electron injection transport layer between the light-emitting layer and the cathode, and the amount of a halogen detected from a material forming the electron injection transport layer is less than or equal to 30 ppm.

The invention discloses a manufacturing method for a lasting high-brightness fluorescent fishing rod. The manufacturing method comprises the following steps: manufacturing a blank fishing rod: uniformly mixing fluorescent powder and varnish according to a certain mass ratio to prepare a fluorescent paint; manufacturing an annular rubber baffle and mounting the annular rubber baffle on a paint pulling device; putting the fluorescent paint into a paint box of the paint pulling device; inserting one thin end of the blank fishing rod into a paint pulling hole from the paint box; rotating the paint pulling device to deposit the fluorescent paint on the blank fishing rod; pulling out the blank fishing rod from the paint pulling hole at the speed of 30cm-50cm per second and painting; and drying and assembling to obtain the lasting high-brightness fluorescent fishing rod. The fluorescent fishing rod manufactured by the method is long in luminous time and commonly can be luminous for eight to nine hours; the fluorescent brightness is high.

The present invention is to provide an LED driver circuit which includes a capacitor and at least one LED respectively connected in parallel to a power source through a switch device, and a controller having an input end connected to a line between the switch device and the power source and being configured for detecting an input voltage applied to the LED. When the controller detected that the input voltage is unable to drive the LED to emit light, the controller activates the switch device to make only the connection between the capacitor and the at least one LED, such that the capacitor discharges a voltage stored therein to the at least one LED to continuously emit light. Since the driver circuit only needs a small-capacity, low-cost capacitor for increasing the light emission time of the at least one LED, the cost of the driver circuit can be lowered effectively.

The invention discloses a novel waterborne luminescent coating and a preparation method thereof. The coating comprises acrylic emulsion, styrene-butadiene emulsion, an anti-settling agent, a wetting dispersant, a defoaming agent, a coalescing agent, deionized water, luminescent powder and a filler. The preparation process comprises the following steps of: firstly, adding the acrylic emulsion, styrene-butadiene emulsion, anti-settling agent and wetting dispersant into a container, and uniformly stirring the materials at a rotating speed of 300 revolutions per minute; then, slowly adding the luminescent powder at the same stirring rate, and carrying out stirring at a rotating speed of 2000rpm until the materials are uniformly mixed; and finally, reducing the rotating speed to 300rpm, addingthe defoaming agent, coalescing agent and filler in sequence, then fully stirring the materials until the materials are completely and uniformly mixed, and finally adjusting the viscosity and the solid content with deionized water. According to the novel waterborne luminescent coating provided by the invention, solid glass micro-spheres are used as a filler, so that the luminous efficiency and afterglow time of the coating are greatly improved, and the service time of the paint film of the coating is prolonged.