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

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 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 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 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 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 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.