30results about How to "Guaranteed luminous brightness" patented technology

The invention provides super fine grain size high light efficiency long lad fluorescent powder. The chemical structural formula of the fluorescent powder is Srm-pMepAl2O(3+m+q):Eux, Dyy, Rz, wherein Me is at least one of Ba and Mg; R is at least one of La and Gd; m is more than 1 and less than or equal to 0.3; p is more than or equal to 0.006 and less than 0.3; q is equal to x plus y plus z; x is more than or equal to 0.005 and less than or equal to 0.05; and z is more than or equal to 0.0001 and less than or equal to 0.01. The preparation method comprises the following steps: 1) by taking the chemical structural formula of target products as a measuring base, oxides of Sr, Ba, Mg, Eu, Dy, La and Gd and nitrate or carbonate are picked up as raw materials; 2) the raw materials are added with reaction auxiliary agent; 3) the mixed materials are placed in a high-temperature reducing atmosphere furnace, and subjected to high-temperature synthesis under the protection of N2H2 mixed gas; 4) the sintered fluorescent powder blocks are crushed to obtain super fine grain size long lad fluorescent powder; and 5) the crushed fluorescent powder is subjected to aftertreatment to obtain the finished product. The fluorescent powder has the advantages of super fine grain size and centralized distribution and higher brightness and longer afterglow time, and can be better applied to fields such as luminescent fiber, printing, coating material.

The invention discloses a skin core structure tombarthite strontium aluminate long afterglow luminescent fiber and preparation method thereof, by mass, the luminescent fiber is prepared from 70-85% of core layer, and 15-30% of skin layer; the core layer is prepared from 10-30% of tombarthite strontium aluminate luminescent powder, 0.02-0.05% of phosphite ester, 0.02-0.2% of antioxidant agent, 0.5-1% of silane coupling agent, the balance polyamide resin; the skin layer adopts the transparent polymethyl methacrylate, or polycarbonate or polystyrene resin with added toughening agent. The prepared luminescent fiber because of the tombarthite strontium aluminate luminescent material being all located on the core layer, effectively prevents the tombarthite strontium aluminate luminescent material from falling, ensures the luminescent brightness of fibers, and raises the water resistance and abrasion resistance of the luminescent fibers, meanwhile the skin layer adopts resins with excellent transparent degree, making the prepared luminescent fibers smooth on surface, and further enhancing the luminescent effect of the luminescent fibers.

The invention discloses an LED constant-current driving circuit of multi-path self-adaptive loads. The LED constant-current driving circuit comprises a booster circuit providing positive electrode driving voltage for LED string lamps, a control circuit, a closed loop constant-current mirror driving circuit and a sampling circuit. The closed loop constant-current mirror driving circuit comprises an operational amplifier, power MOS transistors and current limiting resistors R1. The output end of the booster circuit is connected with the positive electrodes of each path of LED string lamps, the negative electrodes of each path of LED string lamps are connected with a drain electrode of one corresponding power MOS transistor, the gate electrode of each power MOS transistor is connected with the output end of the operational amplifier, the source electrode of each power MOS transistor is grounded through one current limiting resistor R1, and one end, connected with the corresponding power MOS transistor, of each current limiting resistor R1 is connected with the reverse input end of the operational amplifier. The output end of the closed loop constant-current mirror driving circuit is connected with the sampling circuit, the control circuit is respectively connected with the sampling circuit and the booster circuit, and the control circuits controls the output voltage of the booster circuit according to the voltage value acquired by the sampling circuit. The LED constant-current driving circuit is high in constant-current precision and capable of automatically regulating the driving voltage and driving multiple paths of LED string lamps at the same time.

The invention provides a comprises a Micro-LED chip, a display device and a manufacturing method of micro-LED chip. The Micro-LED chip comprises a carrier plate and a plurality of light-emitting units connected with the carrier plate. Each light-emitting unit comprises an electrode group, an isolation layer, a third LED stack, a second LED stack and a first LED stack, wherein the electrode group, the isolation layer, the third LED stack, the second LED stack and the first LED stack are sequentially arranged on the surface of the carrier plate; the second LED stack is electrically connected with the third LED stack through a conductive channel; and the first LED stack is electrically connected with the second LED stack through a conductive channel. By configuring different material systems of the third LED stacks, the second LED stacks and the first LED stacks and combining a driving circuit to control the on / off of a first electrode bonding pad, a second electrode bonding pad, a third electrode bonding pad and a fourth electrode bonding pad and the magnitude of input current, a plurality of light emitting modes of independent control and color mixing control of a plurality of primary colors are realized, and light emitting of full light systems can be achieved only through one Micro-LED chip.

The embodiment of the invention discloses a display panel and a display device. The display panel comprises a substrate, a first electrode, a second electrode, a pixel definition layer and a third electrode, wherein the substrate is divided into a first display area and a second display area; the first electrode is located in the first display area on the substrate, the second electrode is locatedin the second display area on the substrate, and the light transmittance of the second electrode is larger than that of the first electrode; the pixel definition layer is located on the substrate, the pixel definition layer comprises an opening and a slope surrounding the opening, and the opening exposes the first electrode and the second electrode; the third electrode is located in the second display area and arranged on the slope surface of the pixel definition layer, and the third electrode is in lap joint with the second electrode. According to the technical scheme, the light emitting brightness of the second display area is improved, the display effect difference between the first display area and the second display area is reduced, the uniformity of the light emitting brightness andthe light color of the display panel is guaranteed, the screen-to-body ratio of the display device is improved, and implementation of full-screen display is facilitated.

The invention discloses a night-light plastic injection-molding part preparation method. The part comprises the raw materials of, by weight: 90-98 parts of plastic masterbatch, 2-10 parts of light-induced energy-storage long-effect night-light powder, and 1-5 parts of diffusion oil or white oil. The method is characterized in comprising the steps that: A, the plastic masterbatch is bake-dried for 2-4h under a temperature of 80-100 DEG C, and water content is controlled below 0.05%; B, the light-induced energy-storage long-effect night-light powder and nano-grade silica diffusion oil or white mineral oil with a certain formula are stirred into a paste; the paste is well mixed by stirring with plastic in a ceramic stirring mixing container; and C, the mixed raw material is placed into a feeding port of an injection molding machine; the raw material is molten, and is injected in to a mold cavity with high-pressure and high-speed under the thrust of a screw, such that injection molding is carried out. With the preparation method provided by the invention, the obtained night-light injection-molding part has the advantages of long luminescent time and high luminescence brightness. Also, the light-induced energy-storage night-light powder is adopted, such that luminescence is stable and environment-friendly, and no pollution is caused.

The invention discloses a method for machining an LED lamp with a flexible lamp belt. Firstly, the injection molding technology is used for machining raw plastic materials into a carrier of a corresponding object form and the carrier is composed of an outer frame which forms an object outline; secondly, continuous grooves are formed in the outer frame along the object outline and a mixture of glue and curing agents is used for potting the LED flexible lamp belt after the LED flexible lamp belt is put into the grooves; finally, the solidifying technology is used for condensing the mixture of the glue and the curing agents and the LED lamp composed of the carrier and the attached LED flexible lamp belt is obtained. The method for machining the LED lamp with the flexible lamp belt has the advantages that the automatic technology is used for machining and obtaining the LED lamp with the flexible lamp belt; the machining method is simple; when the LED flexible lamp belt emits light, the outline of the carrier can be represented through the light of the LED flexible lamp belt; the LED flexible lamp belt and the carrier can serve as a whole core to achieve decorativeness and the decoration effect is good.

The invention relates to the technical field of composite materials and in particular to a long-afterglow PE (polyethylene) master batch and a preparation method thereof, a PE plastic part and a preparation method thereof. The long-afterglow PE (polyethylene) master batch comprises the following raw materials in parts by weight: 28-68.5 parts of a PE resin, 0.3-1 part of a dispersant, 0.5-5 partsof a thermal stabilizer and 30-70 parts of luminous powder, and the luminous powder and the PE resin in the long-afterglow PE master batch are in bonding. The content of the luminous powder in the long-afterglow PE master batch is up to 30-70%, the luminous powder is uniformly dispersed, and the long-afterglow PE master batch is bright in color, long in light emission time and high in brightness.

The invention provides a graphene electroluminescence dot matrix display panel and a manufacturing method thereof. The graphene electroluminescence dot matrix display panel comprises an upper conductive layer, a transition layer, a lower conductive layer and a protection layer in sequence from top to bottom, wherein a light emitting material is printed on one side, adhered to the transition layer, of the upper conductive layer; the upper conductive layer is a graphene film; a light emitting dot matrix is formed on the surface of the upper conductive layer. According to the graphene electroluminescence dot matrix display panel and the manufacturing method thereof, a patterned display panel can be formed by uniformly coating the upper graphene conductive layer with the light emitting material of a matrix mode. Patterning can be achieved for the graphene electroluminescence dot matrix display panel, the problem that a conventional cold light piece is monotonous in display can be solved, and moreover due to the structure of two light emitting layers, the light emitting brightness of the graphene electroluminescence dot matrix display panel can be improved.

The invention discloses an LED chip, a display module and a display screen, and the LED chip comprises a current local injection layer which is used for enabling the ratio of the area of an effectivelight-emitting area to the area of a light-emitting area of the LED chip to be smaller than a preset value; the effective light-emitting area is located in the center of the LED chip, and the epitaxial layer of the non-electrode area around the light-emitting area of the LED chip is shaped according to the shape of the effective light-emitting area. The current local injection layer is arranged tocontrol the ratio of the area of the effective light-emitting area to the area of the light-emitting area of the LED chip to be smaller than the preset value, so that the LED chip works in a linear area while the light-emitting brightness of the chip is ensured; moreover, the effective light-emitting area is located in the center of the LED chip, and the epitaxial layer of the non-electrode areaaround the light-emitting area of the LED chip is shaped according to the shape of the effective light-emitting area, so that the effective light-emitting area is far away from the edge of the substrate as much as possible, the lateral light emission of the LED chip is reduced, and the application design and process complexity of the rear-end LED display module and display screen are simplified.

The invention discloses a composite noctilucent fiber with a skin-core structure and a preparation method of the composite noctilucent fiber. The composite noctilucent fiber comprises the following components by mass fraction: 50-75wt% of skin layer and 25-50wt% of core layer, wherein the skin layer comprises luminescent material and carrier resin, and the core layer is made from polyolefin resin. The carrier resin of the skin layer is the same as the resin used by the core layer or is different from the resin used by the core layer. The luminescent material in the skin layer is made of light-storage type rare earth long afterglow luminescent powder; the luminescent powder is dispersed into the carrier resin by a mixing pelletizing method, and noctilucent master batch can be formed; noctilucent polyester pre-oriented yarn (POY) is prepared by melting and carrying out skin-core composite spinning on the noctilucent master batch and polyolefin resin; finally, noctilucent fully drawn yarn (FDY) is obtained by a drafting technology. The noctilucent fiber with the skin-core composite structure is high in strength, good in flexibility and high in fiber comprehensive application performance.

The invention provides a drive circuit with current balance for CCFL (Cold Cathode Fluorescent Lamp) tubes. The drive circuit comprises a direct current-alternating current conversion circuit, a PWM (Pulse-Width Modulation) drive control circuit, a first high voltage transformer, a second high voltage transformer and a plurality of CCFL tube branches which are connected in parallel, wherein each CCFL tube branch comprises a first triode and a second triode; the emitter of the first triode is mutually connected with the emitter of the second triode, and the base electrode of the first triode and the base electrode of the second triode are connected with a current feedback circuit; the anode of a first diode is connected with the emitter of the first triode, and the cathode of the first diode is connected with the collector of the first triode; the anode of a second diode is connected with the emitter of the second triode, the cathode of the second diode is connected with the collector of the second triode; and the first CCFL tube is connected in series between a first capacitor and the collector of the first triode, and the second CCFL tube is connected in series between a second capacitor and the collector of the second triode. By adopting the drive circuit, currents flowing through the CCFL tubes are equal, and the circuit has a simple structure.

The invention provides a novel LED lamp bulb provided with a gallium nitride LED chip. The novel LED lamp bulb comprises an upper end part (1), a bulb (2), an inner frame (3), a light emitting device (4), a supporting device (5), a plugging device (6) and a reflecting device (7), wherein a filling part (11) and pins (12) are arranged at the upper end part (1); a baffle plate (21), a power supply (22), a first supporting bar (23) and a first through hole (24) are arranged on the bulb (2); a first fixing ring (31) is arranged on the inner frame (3); the light emitting device (4) comprises a heat dissipation frame (41), circuit boards (42), LED lamp beads (43), heat conducting bars (44) and a connecting tube (45); the supporting device (5) comprises a cushion block (51), a second supporting bar (52) and a reflecting ring (53); the plugging device (6) comprises a plugging block (61) and a holding part (62); the reflecting device (7) comprises a reflecting plate (71) and diagonal bars (72). Effective heat dissipation of the LED lamp bulb is realized, the heat dissipation efficiency is high, and the heat dissipation effect is good.

The invention discloses a high weather resistance polysiloxane type luminous paint and a preparation method thereof. A high-weather-resistant polysiloxane type luminous paint, in parts by mass, comprising the following components: 100 parts of methyl vinyl silicone oil, 10-20 parts of methyl hydrogen-containing silicone oil, and 30-60 parts of methyl MQ resin , 5-10 parts of vinyl MQ resin, 5-15 parts of luminous powder, 0.01-0.06 part of inhibitor and 0.1-0.2 part of curing agent. The polysiloxane matrix selected for the luminous paint prepared by the invention has a moderate viscosity, which can effectively prevent the luminous powder from settling after the viscosity is too low, so as to achieve uniform distribution of the luminous powder in the coating layer, so that the luminous intensity of the luminous paint film after molding has consistency.

The invention relates to the technical field of composite materials, in particular to a long afterglow PE masterbatch, a preparation method thereof, a PE plastic part and a preparation method thereof. Long afterglow PE masterbatch, in parts by weight, its raw materials include 28-68.5 parts of PE resin, 0.3-1 part of dispersant, 0.5-5 parts of heat stabilizer and 30-70 parts of luminous powder, and The luminous powder in the long afterglow PE masterbatch forms a bond with the PE resin. The content of luminous powder in the long afterglow PE masterbatch of the present invention can reach 30-70%, and the luminous powder is evenly dispersed, and the long afterglow PE masterbatch has bright color, long luminescence time and high brightness.

The present invention provides super fine grain size high light efficiency long lad fluorescent powder. The chemical structural formula of the fluorescent powder is Srm-pMepAl2O(3+m+q):Eux, Dyy, Rz, wherein Me is at least one of Ba and Mg; R is at least one of La and Gd; m is more than 1 and less than or equal to 0.3; p is more than or equal to 0.006 and less than 0.3; q is equal to x plus y plus z; x is more than or equal to 0.005 and less than or equal to 0.05; and z is more than or equal to 0.0001 and less than or equal to 0.01. The preparation method comprises the following steps: 1) by taking the chemical structural formula of target products as a measuring base, oxides of Sr, Ba, Mg, Eu, Dy, La and Gd and nitrate or carbonate are picked up as raw materials; 2) the raw materials are added with reaction auxiliary agent; 3) the mixed materials are placed in a high-temperature reducing atmosphere furnace, and subjected to high-temperature synthesis under the protection of N2H2 mixed gas; 4)the sintered fluorescent powder blocks are crushed to obtain super fine grain size long lad fluorescent powder; and 5) the crushed fluorescent powder is subjected to after treatment to obtain the finished product. The fluorescent powder has the advantages of super fine grain size and centralized distribution and higher brightness and longer afterglow time, and can be better applied to fields such as luminescent fiber, printing, coating material.

The invention relates to the technical field of display, in particular to a display panel and a display device.The display panel comprises a light-transmitting display area, the light-transmitting display area comprises a plurality of first light-emitting units and a plurality of second light-emitting units, and each first light-emitting unit comprises a first electrode deviating from the light-emitting face of the display panel; each second light-emitting unit comprises a second electrode deviating from the light-emitting surface of the display panel, the first electrode is a light-transmitting electrode, and the second electrode is a non-light-transmitting electrode. According to the display panel, full-screen display of the display panel can be achieved, display is uniform, and transition is natural.

The invention relates to an LED constant current drive circuit using a step-down constant current drive unit and an LED automotive lighting device including the circuit. The DC power supply of the LED constant current drive circuit provides two kinds of power supplies, a far light end power supply and a near light end power supply. The reverse polarity protection unit performs reverse polarity protection on the LED constant current drive circuit. The far light end power supply or the near light end power supply after voltage and constant current is provided to the LED lighting unit to drive the LED lighting unit. Switch between high beam end and low beam end. The LED constant current driving circuit and the LED automobile lighting device including the circuit of the present invention can realize the far and near light adjustment of the LED lighting module, and have the characteristics of simple structure and stable performance.

The invention provides an inorganic energy-storage ceramic luminous material and a preparation method thereof: the inorganic energy-storage ceramic luminous material is composed of 50-90 parts of glass powder and 10-50 The total weight of the glass powder and the luminescent material is 100 parts; the glass powder is selected from glass powder with a melting point of 400-800°C; the luminescent material is a rare earth luminescent material. The inorganic energy-storing ceramic luminous material of the present invention can realize self-luminescence after having good light-absorbing energy storage and heat-absorbing energy storage, and can absorb heat above 38° in the external environment for energy storage and self-luminescence.

The invention provides a low-voltage-driven flexible light-emitting device and a preparation method and application thereof. The preparation method comprises the following steps of: (1) spraying a silver nanowire solution on hydrophobic glass, and drying to complete the setting of a conductive silver layer; (2) spin-coating a substrate solution on the surface of the conductive silver layer obtained in the step (1), and drying to complete the arrangement of a flexible substrate layer; (3) spin-coating luminous layer slurry on the surface of the conductive silver layer relative to the flexible substrate layer, and performing heat treatment to obtain a luminous layer; and (4) spraying the silver nanowire solution on the surface of the luminescent layer obtained in the step (3), and drying to complete the setting of the conductive silver layer. According to the flexible light-emitting device prepared by the invention, the driving voltage can be greatly reduced under the condition of the same light-emitting brightness, and the safety of the flexible light-emitting device when the flexible light-emitting device is applied to wearable equipment is ensured.

The invention discloses a high-weather-resistance polysiloxane type noctilucent coating and a preparation method thereof. The high-weather-resistance polysiloxane type noctilucent coating is prepared from the following components in parts by mass: 100 parts of methyl vinyl silicone oil, 10 to 20 parts of methyl hydrogen silicone oil, 30 to 60 parts of methyl MQ resin, 5 to 10 parts of vinyl MQ resin, 5 to 15 parts of noctilucent powder, 0.01 to 0.06 part of an inhibitor and 0.1 to 0.2 part of a curing agent. According to the prepared noctilucent coating, the selected polysiloxane matrix is moderate in viscosity, and the noctilucent powder can be effectively prevented from settling after the viscosity is too low, so that the uniform distribution of the noctilucent powder in a coating layer is achieved, and the luminous intensity of a formed noctilucent coating film is consistent.

The invention discloses a skin core structure tombarthite strontium aluminate long afterglow luminescent fiber and preparation method thereof, by mass, the luminescent fiber is prepared from 70-85% of core layer, and 15-30% of skin layer; the core layer is prepared from 10-30% of tombarthite strontium aluminate luminescent powder, 0.02-0.05% of phosphite ester, 0.02-0.2% of antioxidant agent, 0.5-1% of silane coupling agent, the balance polyamide resin; the skin layer adopts the transparent polymethyl methacrylate, or polycarbonate or polystyrene resin with added toughening agent. The prepared luminescent fiber because of the tombarthite strontium aluminate luminescent material being all located on the core layer, effectively prevents the tombarthite strontium aluminate luminescent material from falling, ensures the luminescent brightness of fibers, and raises the water resistance and abrasion resistance of the luminescent fibers, meanwhile the skin layer adopts resins with excellent transparent degree, making the prepared luminescent fibers smooth on surface, and further enhancing the luminescent effect of the luminescent fibers.

The invention discloses a wall-mounted LED lamp which is convenient for adjusting the illumination angle. A number of bolts are fixed on the fixed base, a worm is installed on one side of the fixed plate, a rotating shaft is installed on both ends of the worm, and a bearing seat matching the rotating shaft is installed on both ends of the worm, and one of the bearing seats Both sides are fixed on the fixed plate, one end of the rotating shaft and the end away from the worm are all sleeved with a matching ring, one end of the rotating shaft at the bottom of the worm is equipped with a rotating rod one, and the connecting rod one and the rotating shaft are connected by a connecting mechanism. Beneficial effects: the present invention is provided with an adjustment mechanism, so that it can adjust the illumination angle of the LED lamp according to the user's use requirements, so that it can better provide convenience for the user's lighting.

The invention relates to a lamp panel and a ceiling lamp. The lamp panel comprises a plurality of lamp panel assemblies, wherein an annular structure is defined by the plurality of lamp panel assemblies, and the light-emitting brightness can be guaranteed. In the prior art, a lamp panel material of a circular structure is adopted, the middle part is cut off, and a whole annular lamp panel is formed. The cut part cannot be used for manufacturing a lamp panel, so that the lamp panel material is wasted. Compared with the prior art, the lamp panel assembly does not contain a closed space, waste of the annular middle material is avoided, and the utilization rate of the lamp panel material is increased.

The invention provides an inorganic energy storage ceramic noctilucent material and a preparation method thereof. The inorganic energy storage ceramic noctilucent material is prepared from the following components in parts by weight: 50-90 parts of glass powder and 10-50 parts of a luminescent material, wherein the total weight of the glass powder and the luminescent material is 100 parts, the glass powder is selected from glass powder with a melting point of 400-800 DEG C, and the luminescent material is a rare earth luminescent material. The inorganic energy storage ceramic noctilucent material disclosed by the invention has good light absorption and energy storage and heat absorption and energy storage, then realizes self-luminous capacity, and can absorb heat at 38 DEG C or above in an external environment for energy storage and self-luminous.

The invention discloses an LED constant-current driving circuit of multi-path self-adaptive loads. The LED constant-current driving circuit comprises a booster circuit providing positive electrode driving voltage for LED string lamps, a control circuit, a closed loop constant-current mirror driving circuit and a sampling circuit. The closed loop constant-current mirror driving circuit comprises an operational amplifier, power MOS transistors and current limiting resistors R1. The output end of the booster circuit is connected with the positive electrodes of each path of LED string lamps, the negative electrodes of each path of LED string lamps are connected with a drain electrode of one corresponding power MOS transistor, the gate electrode of each power MOS transistor is connected with the output end of the operational amplifier, the source electrode of each power MOS transistor is grounded through one current limiting resistor R1, and one end, connected with the corresponding power MOS transistor, of each current limiting resistor R1 is connected with the reverse input end of the operational amplifier. The output end of the closed loop constant-current mirror driving circuit is connected with the sampling circuit, the control circuit is respectively connected with the sampling circuit and the booster circuit, and the control circuits controls the output voltage of the booster circuit according to the voltage value acquired by the sampling circuit. The LED constant-current driving circuit is high in constant-current precision and capable of automatically regulating the driving voltage and driving multiple paths of LED string lamps at the same time.

The invention provides an organic electroluminescence element, an array substrate and a preparation method thereof and a display panel. The organic electroluminescence element a first electrode, a luminescent function layer and a second electrode, and the luminescent function layer is clamped between the first and second electrodes and is of a curved plate structure. Compared with an organic electroluminescence element with a luminescent function layer of a planar plate structure with the same large light emitting area, the organic electroluminescence element of the invention can broaden the light emitting area of the organic electroluminescence element, and ensures that the voltage loaded by the organic electroluminescence element of the curved plate structure is obviously lower than thatloaded by the organic electroluminescence of the planar plate structure under the condition that the light emitting brightness of the organic electroluminescence element is not changed; and further heat radiation of the organic electroluminescence element is reduced, an exciton quenching phenomenon caused by higher temperature is solved to certain extent, exciton ageing is slowed, and the servicelife of the organic electroluminescence element is prolonged.