149 results about "Age problems" patented technology

The invention discloses a remote discharging control system, a monitoring unit device and a detecting method of a storage battery pack. The detecting method comprises the steps of: in the discharging process of the storage battery pack, collecting a monomer voltage, a total voltage, a discharging current and a marked temperature of the storage battery pack so as to draw a discharging curve; calculating a capacity discharged by the storage battery pack under the current marked temperature in real time, and converting the capacity value into the capacity value under a reference temperature; comparing the discharging curve with a historic discharging curve drawn under the same load so as to update an aging ratio of the storage battery pack in real time; and calculating an actual total capacity of the storage battery pack at the beginning of the test when the discharging is finished, and obtaining the needed detecting data according to the actual total capacity, the discharging curve and the discharged capacity information. By adopting the method, the remote discharging test can be performed; the testing data of the storage battery pack can be rapidly inquired; the aging problem of the storage battery pack is solved; and the estimation accuracy is improved.

The invention discloses a test device and method for acquiring forming limit diagrams under the complicated loading condition and belongs to the technical field of forming processing of metal plates. The test device is formed by refitting a specially made male die on the premise that a multifunctional plate forming machine is included originally, and other devices and molds are original equipment; the specially made male die comprises a small male die and a large male die, a hoop interface is arranged at the lower end of the small male die and used for butt joint with a hydraulic ejection rod, and a cavity capable of being in sleeving connection with the small male die is formed in the large male die. By means of the provided test device and method, complicated loading can be further realized, corresponding predeformation on plates is not required before bulging, and the ageing problem and the relatively complicated test process are avoided. The plates in the same size are adopted, plates in various sizes are not required to be processed, batch processing can be performed, the test time is saved, and the test period is shortened.

The invention discloses a white LED light source and a manufacturing method of a phosphor thereof. The light source comprises a blue LED and a phosphor, wherein the phosphor is a rare-earth ion doped glass body containing metal nano particles. In the invention, germinate and borate or tellurate are used as matrixes, AgNO3 is used as a raw material, silver is added into glass; the growth of metal silver nano particles is realized through a heat treatment process; Eu<3+>, Sm<3+> or Pr<3+> is used as a red emitting and doping center, and Tb<3+>, Er<3+> or Ho<3+> is used as a green emitting and doping center; and the ions are singly doped or jointly doped into a glass matrix to match with the blue LED chip to emit out white light. In the invention, a single glass phosphor is used for replacing a traditional white LED fluorescent powder and a packaging material, thus the packaging process can be simplified; the ageing problem of a white LED device can be solved, and the stability of the device can be improved; and the excitation efficiency of rare-earth ions can be improved so as to realize high-brightness fluorescence-emission.

The invention discloses a conductive slurry and a method of using the same to form a net shaped carbon thermo-conductive electroconductive network current collector. The conductive slurry is preparedfrom the following raw materials in parts by weight: 4 to 6 parts of carbon nanotube, 8 to 12 parts of conductive carbon black, 1 to 3 parts of flake graphite, and 15 to 25 parts of polyvinyl alcohol.A highly thermo-conductive electroconductive carbon material with at least one dimension and highly thermo-conductive materials that can form a net shape material such as carbon nanotubes, graphene,and the like, are added into common conductive carbon black to form a continuous thermo-conductive electroconductive network coating on a current collector; the coating can provide a heat dissipationeffect for high-rate charge / discharge; at the same time, the electroconductive requirement is satisfied, the heat aging problem of an energy storage system is solved, and the service life of the system is prolonged.

The invention discloses a full-color emission glass phosphor for near ultraviolet or blue light stimulating white light LEDs (Light Emitting Diodes) and a preparation method thereof. The glass phosphor is a rare earth ion doped glass phosphor containing silver ion polymers. The preparation method comprises the following steps of: by using a glass system as a substrate and AgNO3 as a raw material, introducing silver ion polymers into the glass material; and by using rare earth ions such as Eu3+, Sm3+, Pr3+, Tb3+, Dy3+, Er3+ or Ho3+ as a luminescence center, singly or jointly doping the rear earth ions in the glass substrate to be matched with the silver ion polymers for giving out white lights. The single glass phosphor is used for replacing fluorescent powder for the traditional white light LED and encapsulating materials, thereby simplifying the packaging technology; and the full-color emission glass phosphor has the advantages of being capable of solving the aging problem of the while light LED devices, increasing the stability of the devices, increasing the stimulation efficiency on the rare earth ions and realizing the high brightness fluorescence-emission.

The invention discloses a low-temperature non-glue packaging process for an FBG (fiber brag grating) high-temperature sensor. According to the process, a heat resisting fiber brag grating is sealed with a semi-cylindrical stainless steel pipe by a glass solder with a low melting point, the solder is heated by an electric soldering iron until fused, then, the solder is sealed with the fiber brag grating and the semi-cylindrical stainless steel pipe, due to the heat resisting characteristic of the heat resisting fiber brag grating with a polyimide coating, the fiber brag grating is protected and prevented from being broken off when being sealed, besides the characteristic of a traditional fiber brag grating temperature sensor, a novel packaging technology of the fiber brag grating sensor is provided, the non-glue packaging is hardly affected by stress or strain, the grating part is completely sealed and cannot be affected by ambient humidity, there is no need to worry about the aging problem or to carry out the metallization treatment, no laser welding is required, the cost is low, the operating temperature is low, the stability is high, and the structural process and the treatment process are simple.

The invention provides a neutral point grounding resistor integrated device for a power system, belonging to the field of power system distribution network technology. The integrated device comprises a grounding transformer, an isolation switch, a voltage transformer, a circuit breaker, a controller, a grounding resistor and a current transformer. When the grounding does not occur, the grounding resistor is not accessed and no current passes by the grounding resistor, thus completely solving the ageing problem caused by the temperature increment during the normal running process and greatly prolonging the service life of the equipment; and after the grounding occurs, the grounding resistor is accessed with time delay, thus avoiding the transient grounding. Compared with the prior art, the integrated device can reduce the shutdown time by about a half; after the grounding resistor is accessed, the grounding resistor is cut off after a certain time, thus preventing the grounding resistor from being burned and ensuring the safety of the equipment.

The invention relates to a device used to solidify and thermally compose politef film, wherein it uses contact solidification method; it has heating roller to heat via internal several electric heating tubes; the surface temperature of roller can be adjusted until 450Deg. C; the politef film or polyurethane- politef can be drawn together to compose the politef above the heating roller. The invention can solidify film uniformly, with low energy consumption. And it arranges one high-temperature resistant rubber roller above the roller; when roller rotates, it will rotate the high-temperature resistant rubber roller, to thermally compose the politef film and support material at certain temperature and pressure. The invention can avoid the aging problem of adhesive to reduce the cost.

The invention relates to a cake modifying agent. The cake modifying agent comprises, by weight, 3-20% of emulsifying agent, 2-15% of thickening agent, 65-94.9% of food raw materials, and 0.1-2% of enzyme preparation, wherein the emulsifying agent is one or more of single / double-glycerin fatty acid ester, sucrose fatty acid ester, sodium caseinate, and polyglycerin fatty acid ester; the thickening agent is one or more of hydroxypropyl di-starch phosphate and xanthan gum; the enzyme preparation is one or more of maltogenic amylase and alpha-amylase. The cake modifying agent is suitable for being applied to black rice cake manufacturing, the water-prevention and moisture-retaining performance of the black rice cake can be intensified, the ageing problem like product spalling and scaling are postponed, and thus soft, delicate and wet mouthfeel of the cake is maintained.

The embodiment of the invention discloses an organic light-emitting diode packaging structure and a display device. The packaging structure comprises an organic light-emitting diode substrate and a packaging substrate, an organic light-emitting diode device is arranged on the surface of the organic light-emitting diode substrate, an active metal film layer used for absorbing oxygen inside the packaging structure is arranged on the surface of the packaging substrate, the organic light-emitting diode substrate and the edge of the packaging substrate are fixed in a bonding mode through sealing adhesive so that a sealed cavity can be formed, and the organic light-emitting diode device and the active metal film layer are located in the sealed cavity. According to the organic light-emitting diode packaging structure and the display device, the active metal film layer absorbs residual oxygen in the sealed cavity or oxygen which seeps in from the outside, the requirement of the organic light-emitting diode device for oxygen permeability can be met, the ageing problem of an organic light-emitting diode can be solved to some extent, and the service life of the organic light-emitting diode device and the service life of the display device can be prolonged.

The invention discloses a detergent and hot water solution soakage-resistance polypropylene composite, which comprises the following components in percentage by weight: polypropylene resin 50-80, flexibilizer 0-15, filler 5-40, composite antioxidant 0.5-1.5 and processing aid 0.2-0.8, wherein the melt index of the polypropylene resin under test conditions of a temperature of 230 DEG C and a mass of 2.16KG is 2 to 40g / 10min; and the composite antioxygen is a composite of a triazine antioxygen, a phosphite ester antioxygen and a thioether antioxygen. Compared with the prior art, the detergent and hot water solution soakage-resistance polypropylene composite has obviously improved heat resistance, aging resistance and oxidization resistance under the condition of the same detergent and hot water solution soakage time and has a service life prolonged by 5 to 12 times. The easy aging problem of the plastic parts, needing to contact detergent directly, of a washing machine, a dish-washing machine and the like in the prior art is solved.

The invention provides a high-temperature and high-radiation inorganic shielding material. The high-temperature and high-radiation inorganic shielding material comprises an inorganic gelling material and a shielding function component, and the shielding function component is any one of or the combination of two or more of hydroxide, a neutron absorption component, a gamma ray shielding component and the like. According to the high-temperature and high-radiation inorganic shielding material, the inorganic gelling material, hydroxide and the neutron absorption component are used as main components, the long-term using temperature can reach 230 DEG C, the shielding material has high shielding efficiency on fast neutrons, intermediate neutrons and thermal neutrons, increases the using temperature of neutron shielding materials, is a powerful supplement for the types of the neutron shielding materials, improves the flexibility of reactor shielding system design, and solves the radiation aging and thermal aging problem faced by traditional organic shielding materials in service and the problem that no neutron shielding material is available under a high temperature environment.

The invention discloses an artificial accelerated aging test method aiming at basin-type insulators of a Gas Insulated Switchgear (GIS). The method includes the steps of: aiming at the condition that the basin-type insulators of the GIS frequently break down, combining an aging factor of the basin-type insulators possibly met in the work environment, designing a reasonable artificial accelerated aging test for epoxy resin materials in a laboratory condition; and on this basis, analyzing test data, finding characteristic quantity reflecting the degree of aging, and drawing an insulating-aging characteristic curve of the epoxy resin materials. The artificial accelerated aging test method designs a test platform and an electrode structure in accordance with the aging environment of the basin-type insulators, gives out a determination mode of the temperature and the voltage in the artificial accelerated aging, and ensures the equivalence, the repeatability and the reproducibility of the aging test. The test method of the invention fills the gap of the artificial accelerated aging test method of the epoxy resin in the laboratory condition, and has great guidance significance for solving the aging problem of the basin-type insulators.

The invention provides a breathing machine and a proportional valve. The proportional valve comprises a shell body and a valve seat. The shell body comprises a cavity body, an inlet, an outlet and a valve port are formed in the valve seat, the shell body is connected with the valve seat in a sealing mode, and the inlet is communicated with the valve port. A coil, a first soft magnet, an armature, a first elastic element and a seal cover plate are arranged inside the shell body. The coil is wound on the outer periphery of the first soft magnet, the first magnet is arranged on an axial first side of the armature, the seal cover plate is connected with an axial second side of the armature, the first elastic element is arranged on the second side of the armature, and the first soft magnet drives the armature to enable the surface of the seal cover plate to contact with or separate from the end face of the valve port. Flow control of the proportional valve is realized through the opening and the closing between the seal cover plate and the end face of the valve port, wherein the opening and the closing are controlled in an electromagnetic mode. Therefore, the aging problem of a seal ring when the seal ring is used for sealing does not exist, and the proportional valve has the advantages of being good in sealing effect, high in response speed, low in cost, convenient to repair, and capable of reducing hysteresis phenomenon.

A welding method for foamed aluminum and alloy is characterized in that the welding steps include: coating processing, preheating processing, secondary foaming behavior and cooling processing. The invention needs not to use any brazing filler metal on the welded foamed aluminum and alloy; thereby the method is simple and easy to carry out, the processing cost is low and the invention can acquire welded foamed aluminum and alloy material with oversize, high combining degree as well as excellent processing performances and mechanical property. The invention needs not to carry out fine processing on a welding interface of the foamed aluminum and alloy and only needs to remove an oxide layer, can reduce cost, simplify the working procedures. Through using a locating iron sheet to coat the foamed aluminum and alloy and lead a small amount of deformation and higher precision during the welding process. The welding combining rate can reach 95 percent. The invention relates to the joint among metals and has no aging problem under the space ray conditions like ultraviolet radiation and has a reliable connection compared with splicing.

The application relates to the technical field of display, in particular to a fingerprint operation prompting method, a display panel and a display device, in order to solve the problem in the prior art that there will be ghost shadow in the in-display fingerprint identification area due to long-time display of the same static graph. The method comprises the following steps: detecting whether a display device receives a fingerprint recognition instruction; and when a fingerprint recognition instruction for the display device is detected, dynamically displaying a first image used to prompt fingerprint operation in a preset target area, wherein the preset target area is within the display area of the display device. Thus, the problem of ghost shadow caused by the fact that the light emittingsub pixels in the preset target area always display a static image can be avoided. Moreover, the light emission duration of the light emitting sub pixels is reduced to a certain extent, the aging problem of the light emitting sub pixels is alleviated, and the display quality is improved.

A pottery electric rice cooker, comprising: housing, upper cover, pottery inner cover, pottery inner container, heating device, temperature sensor, and circuit control device, the pottery inner cover is equipped with air gate, the temperature sensor is installed inside the housing near connection with upper cover, the upper cover is equipped with air gate relative to steam passage and air inlet of steam passage, the air gate of steam passage is relative to temperature sensor. The way of temperature measuring inside avoids abrasion and aging problem of wiring connecting temperature measuring element caused by frequent open on upper cover, and the pottery electric rice cooker is characterized by rational assembly and safer usage.

The invention discloses a skin care cosmetic taking an American wild yam extract as a main component and a preparation method thereof. The skin care cosmetic taking the American wild yam extract as the main component is prepared by five phases of materials, wherein the most important two components by weight percent are as follows: the American wild yam extract accounts for 2.0-8.0% and a rhEGF (recombinant human epidermal growth factor) accounts for 1-0.10%. The skin care cosmetic organically combines the rhEGF with American wild yam essence from Mexico, on the one hand, damaged cells can be repaired, and senile cells can be activated, thereby enabling skin cells to have sufficient vitality to absorb and utilize nutritional substances and promoting regeneration and health of the cells; on the other hand, a sufficient quantity of hormone precursor can be provided for skin, and the endogenous aging problem of the skin can be effectively suppressed and prevented after skin absorption and utilization, thereby being the skin care cosmetic which can realize percutaneous absorption through in vitro application and play a comprehensive skin care effect.

The invention discloses a drug composition for treating neurasthenia and preventing senile dementia. The drug composition comprises the following raw materials in percentage by mass: 1%-10% of malania oleifera nervonic acid, 1%-10% of helicid, 1%-10% of semen coicis lactone and the balance of auxiliary materials. The drug provided by the invention is helpful for prolonging the sleeping time of old people; the semen coicis lactone is capable of preventing cancers and inhibiting proliferation of various cancer cells; malania oleifera nervonic acid, helicid and semen coicis lactone are combined for effectively preventing and controlling the occurrence of the senile dementia and healing the senile dementia; a safe and effective plant composition extracted from pure plants is provided for the whole world with increasingly severe aging problems. According to the drug composition, the raw materials are reasonable in medicine compatibility and are all from natural plants; meanwhile, a preparation method of the drug composition provided by the invention is strong in operability; especially, an extraction process is involved according to the chemical properties of the effective ingredients of various Chinese herbal medicines, and the effective ingredient content of obtained extract is high; the drug composition has the advantages of high drug effect, low clinical dosage and the like, and the process is stable and suitable for industrial mass production.

The invention discloses an air conditioning unit system and a control method of an air conditioning unit. The air conditioning unit system comprises multiple air conditioning units and a wireless gateway, wherein the wireless gateway is used for composing the multiple air conditioning units into a wireless local area network, so that the multiple air conditioning units communicate through the wireless local area network and / or the multiple air conditioning units are wirelessly connected with an external device through the wireless gateway. As the technical scheme is adopted, wire connection among air conditioners is simplified, the fussy wiring problem is avoided, manpower and material resources for wiring are saved, and the aesthetic sense of buildings also can be prevented from being destroyed; furthermore, as a wireless networking form is adopted, the aging problem of communication lines of wired communication does not exist, the maintaining difficulty of the air conditioning unit is reduced, and the remote control is realized conveniently.

The invention relates to a permanent waterproof layer of a building roof. The invention adopts ultra-high-performance concrete, and the integral roof waterproof layer is laid in one or more pouring constructions. The obtained waterproof layer body and seams have reliable functions of anti-crack, anti-seepage, waterproof and thermal insulation layer protection, and can simultaneously improve the strength and rigidity of the roof structure. The waterproof layer is durable and long-lasting, and the working life is the same as that of the building. The construction joint bonding joint and strengthening method of the invention can ensure the crack resistance, seepage resistance and waterproof performance of the joint interface. The permanent waterproof layer of the present invention has relatively simple laying and construction, and is suitable for waterproofing and maintenance of new building roofs and old building roofs of different structures, especially for flat roofs with relatively high loads such as planting, water storage, and parking. The waterproof layer of the cement-based composite material with both toughness and rigidity has no aging problem, and the waterproof and seepage-proof reliability of construction joints is high, which can permanently solve the problem of easy leakage of building roofs.

The invention relates to a disinfection cabinet structure. The disinfection cabinet structure comprises a housing, and an inner container (2) and a disinfection source generator (3) which are arrangedin the housing (1); a wind channel (4) is arranged in a gap between the housing (1) and the inner container (2); a wind outlet (41) and a wind inlet (42) of the wind channel (4) are communicated withthe internal cavity of the inner container (2); a heating device (5) and a blower fan (6) are arranged in the wind channel (4); and the disinfection source generator (3) is arranged in the wind channel (4). The disinfection cabinet structure is capable of solving problems in the prior art; the disinfection source generator is arranged in the inner container; disinfection and heating processes arecombined; energy saving effect is excellent; aging problem caused by direct action of the disinfection source on the components and the articles to be disinfected in the inner container is solved; the disinfection cabinet structure is safe, is friendly to the environment, is good for health; requirements on materials of the components and the articles to be disinfected in the inner container arereduced greatly; application range is wider; no disinfection blind angle is left; and drying temperature is more uniform.

The invention discloses an ultraviolet light-emitting diode, comprising a light-emitting chip for emitting ultraviolet lights, wherein a separation layer is adhered to the light-emitting face of a light-emitting chip; the refractive index of the separation layer is more than 1.3 within an ultraviolet band, and the transmissivity of the separation layer is more than 50% within the ultraviolet band; a lens is adhered to the separation layer; and the transmissivity of the lens is more than 50% within the ultraviolet band. According to the ultraviolet light-emitting diode according to the invention, the separation layer and the lens, which have the high transmissivity within the ultraviolet band, are tightly adhered to the light-emitting face of the light-emitting chip, so as to greatly improve the light-emitting efficiency of the ultraviolet LED (Light-Emitting Diode), reduce the light decay speed, avoid the ageing problem of the ultraviolet light-emitting diode and prolong the service life of the ultraviolet light-emitting diode.

The invention discloses a rod type solid particle friction damper. The rod type solid particle friction damper comprises a cylinder body and a piston rod. End covers are arranged at the two ends of the cylinder body, and the two ends of the piston rod stretch out of the end covers. A piston body is fixed to the middle portion of the piston rod, the piston body is located in the cylinder body to divide the cylinder body into a first cavity and a second cavity, and multiple damping holes for communicating the first cavity with the second cavity are formed in the piston body; and the first cavity and the second cavity of the cylinder body are filled with multiple spherical solid particles, and when the piston body moves in the cylinder body, the solid particles can mutually flow in the first cavity and the second cavity through the damping holes. The solid particles are adopted as a damping medium, the solid particles have the beneficial effects of resisting high-temperature and low-temperature environments, no energy needs to be additionally added, and especially no oil leakage problem or aging problem exists; and the service life is long, and installation and maintenance are convenient.

The invention relates to a gas sensor based on selective wave bands and a detection method thereof. The gas sensor based on the selective wave bands provided by the invention comprises a metal oxide sensor array and a light source. The light source is a light source with variable wavelengths. The wave bands of the light source comprise 180-254nm wave band, 300-320nm wave band, 340-360nm wave band, 365-400nm wave band and 500-600nm wave band. Different oxide sensitive materials are arranged on the metal oxide sensor array. Irradiated by light in some wave band, at least one metal oxide sensor is relatively high in sensitivity to one of to-be-detected gas and is relatively low in sensitivity to other to-be-detected gas. The sensor has the beneficial effects that compared with an existing conventional heating type gas sensor array technology, on the one hand, the gas sensor can work at room temperature to reduce the ageing problem of a sensitive material and improve the stability of the sensor, and on the other hand, improves the selectivity on gas recognition by changing the wavelengths of the light.

The invention discloses a refrigerator container threading structure. The refrigerator container threading structure is characterized in that a section of extended harness sleeve is integrally arranged in an external sleeve; a wiring harness penetrates through central holes of the harness sleeve; the harness sleeve is parallel and level, and connected with the external sleeve at the external end; and the inner end of the harness sleeve is pre-buried in a foaming layer of the refrigerator. By the refrigerator container threading structure, the threading structure is more reasonable; the technological process is simplified, the working efficiency is improved, the aging problem caused by using 502 glue is eliminated, and the working environment of operators is purified.

The invention discloses a repairing facial mask containing high-concentration human mesenchymal stem cells secreting active factors and a preparation method thereof. Human mesenchymal stem cells secrete various and large amounts of cytokines during the culture process, and these cytokines can penetrate deep into the basal layer of the skin to promote Skin tissue differentiation, angiogenesis, and growth of granulation tissue promote structural reconstruction and regeneration of damaged skin tissue, promote the removal of aging cells and regeneration of cells, prevent the loss of skin moisture, and thus maintain and restore the youthful state of the skin. Compared with the traditional mask, the repair mask based on the active factors secreted by mesenchymal stem cells can fundamentally solve the aging problem of the skin, and does not contain any chemical repair ingredients, and has no toxic side effects. In the present invention, the human mesenchymal stem cell secretion is extracted after repeated starvation culture, and contains compound electrolyte injection and other components. It can be used to relieve and repair skin dryness and aging problems caused by various reasons.

The invention relates to the field of building waterproofing and discloses a water stop belt and a pipe gallery deformation joint waterproof structure. The water stop belt comprises a waterproof layerand a lining layer in the thickness direction and an extending-and-retracting portion and connection portions in the width direction, wherein the waterproof layer is arranged on one or more faces ofthe lining layer in a covering manner; and the extending-and-retracting portion is located in the middle, and the connection portions are located at the two sides. The extending-and-retracting portionis folded, so that an extendable-and-retractable structure is formed. The strength and rigidity of the material of the lining layer are greater than those of the waterproof layer. The waterproof layer and the lining layer are compounded in the water stop belt; the stress generated by the vast majority of self weight on the extending-and-retracting portion of the water stop belt is borne by the lining layer, and thus the fatigue and aging problems of the waterproof layer are avoided to a great extent; the service life of the water stop belt can be prolonged; by means of physical deformation ofthe extending-and-retracting portion of the water stop belt, deformation, caused by differential settlement, of a pipe gallery can be resisted against; after deformation is generated, the strength, sealing performance and material performance are not affected; the waterproof effect can be achieved better; and the water stop belt is particularly applicable to deformation joint waterproofing of thecomprehensive pipe gallery.

The invention relates to a conversion current and over-voltage protection technology of electric equipment, in particular to a protector for preventing interception over-voltage and arc reignition over-voltage of a vacuum circuit breaker. A valve body of the protector is assembled by mutual series-parallel connection of a column-type valve plate RN1 of a ZnO non-linear resistor, a ring-type valveplate RN2of a Sic non-linear resistor, and a column-type valve plate RN3 of a ZnO non-linear resistor ; then output ends are connected to both ends of DL movable and stationary main contacts in parallel. The vacuum circuit breaker has the ability of converting current and limiting voltage when the large current is switched on and off, and the function of preventing the interception over-voltage and the arc reignition over-voltage when the low current is switched on and off. When the circuit breaker closes the switch, the current flows from both ends of the main contacts and does not flow in the protector, thus the protector can not have the aging problem, a loop can not cause the reignition over-voltage in the process of switching on and off, thereby protecting the main contact against burning or shortening the service life due to the arc reignition.

The invention discloses a mapping display system, which is used to ease the ageing problems which are produced in non-positive region of output images. When the mapping display system displays the images with different proportion of screen frame, the images extends to the positive region of display frame. The display system sets the lightness and / or chrominance of pixel in non-positive region to accord with the average lightness and / or average chrominance of pixel in positive region. Thereby the phosphorescence in positive region and non-positive region can have same aging speed with other materials to avoid the ghost phenomena.