Analysis of Basic Knowledge of LED Display Screen
The positive and negative poles of the chip are connected to the positive and negative poles of the bracket with gold wires. 2. solid crystal / soldering line solid crystal finish welding wire finish product definition: dripping fluorescent gel into support bowl bowl. Dispensing gel dispensing finish 3. point glue 4. light package definition: classify products according to photoelectric parameters. The classified products are packed into the tape.
Threshing before threshing - LED production equipment brand name function after threshing, ASM SLS220P spectrophotometer, LED chip, color temperature zoning test brand name function ASM 862H welding machine for gold wire welding, LED electrode connecting LED substrate electrode LED production brand name Functional ASM 862H solid crystal machine for LED chip and support between the positioning and installation of brand name function ASM SLT400 automatic tape knitting machine for LED finished products, packaging, LED production equipment brand name function Musashi shotmaster300 dot glue machine used for phosphor glue coating LED detection equipment name function high temperature High humidity equipment gives a high temperature, high humidity, high temperature, high temperature, +85 degree, high temperature, high temperature, high temperature, high temperature, high temperature, high temperature and high temperature, which can be used to test the condition of the product in this kind of environment. High temperature equipment is given to a high temperature environment. It is used to test the condition of the product in this kind of environment. The name function of the product in this kind of environment is high and low temperature impact using high temperature and low temperature exchange test product reliability. 
Sexual equipment name function room temperature aging area for finished LED lamp post or lamps and lanterns at normal temperature aging first part LED lighting industry background, development status and trend directory CONTENTS second part LED lighting basic knowledge, lighting advantage third parts LED lighting industry chain fourth part LED lighting products application and common problems fourth Part LED product application and common problems one, how to identify the good and bad of LED products two, LED product sale question 1, the quality of chip quality LED light source excellent energy saving is that its luminous components are made of semiconductor materials, the chip is the core component of the LED lamp, which determines the energy saving and long life of the LED products. The energy saving advantage of LED is especially prominent in the place of high quality hotel, large business, and the place with long lamp time. The LED light source can bring more than 50% energy saving compared with the traditional energy saving lamp. (the main product line is CREE chip to ensure the quality of the product.) 2, driving power supply high quality drive power can make LED chip work efficiently, high quality drive power has the characteristics of stable, reliable, efficient and long life. The life of the power supply directly affects the life of the whole lamp. In theory, the LED chip is more than 50 thousand hours, the life of the power supply is 25000-30000 hours, and there is no good. It is impossible to guarantee the life of the LED light source. (Shanghai R & D center and Arcadia are working together to build a benchmark for Rex power supply industry). How to choose LED lamps and lanterns? 3. Heat sink radiator materials: all of them are high purity aluminum at present; the structure of the radiator: the contact area and tightness of the LED chip and the substrate, the outer aluminum shell and the tightness will affect the temperature and heat dissipation of the chip; the good heat dissipation structure can effectively improve the effect of convection heat transfer and help to reduce the work of the chip. Time temperature, improve the service life of the product; radiator area: the size of the radiator determines the effect of heat dissipation. If the heat dissipation is not good, the chip will have the effect of high light failure and short life in the work of high temperature. (Rex R & D system carefully designed the radiator structure to meet the heat dissipation requirements of different power lamps). How to choose LED lamps and lanterns? The higher the overall luminous efficiency of the LED lamp, the better the energy saving effect of the lamp. The more electricity is saved, the LED luminaire with lumen / watt height should be selected. The LED color rendering index is generally 70-90 (good color rendering), < 70, and the color rendering is poor. LED lamps should be selected for the high color index; when the life of the LED lamp falls to 70 of the initial luminous flux, that is, the life hours of the lamp, the better the longer the lamp life hours, the better the consistency of the color temperature; the LM-80 report of the reference light source and the maintenance rate of the energy star to 70% of the energy star. To ensure that the temperature of the test point of the LED is less than the test temperature of LM80 when the LED is used under the nominal maximum use environment temperature to ensure that the light source life is more than 25000 hours. Choose the LED light to choose the eyes without glare, light a little soft, that is, the eye will not feel uncomfortable with the light, it is better to have a milky white lampshade with the LED light is more soft; the LED lamp in use switch power does not cause any effect on the lamp, the number of switching lights will not affect life, this is with the fluorescent lamp. The biggest difference is also one of the advantages of the LED lamp. How to choose LED lamps and lanterns? * NVC your world brand * * LED industry introduction and basic knowledge - engineering channel department first part LED lighting industry background, development status and trend directory CONTENTS second part LED lighting basic knowledge, lighting advantages, LED lighting industry chain fourth part LED illuminating product application and common problems The first part of LED lighting industry background, development status and trend one, LED lighting development brief history two, LED lighting development status and trend four, LED lighting in China three, LED light source manufacturer introduction LED lighting development brief history since 1979 inventing the incandescent lamp, human lighting history formally entered the use of electricity as light light The age of the source. Although LED was invented at the beginning of twentieth Century, it was not officially commercialized until 1970s, and the initial brightness was low and the color was monotonous. It could only be used as an indicator for electronic equipment.