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| The structure of LED lamp beads |
| Time:2022-10-09 00:00:00 | view： |
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LED lamp beads are mainly composed of five materials: bracket, silver glue, chip, gold thread, and epoxy resin. ? LED lamp bead bracket 1. The role of brackets: conductivity and support 2. The composition of the bracket: The bracket material is formed by electroplating the material, from the inside to the outside, the material, copper, nickel, copper, silver, silver, silver These five layers are composed of. 3, the type of bracket: Bring a cup bracket for a concentricity type, and the flat head bracket as a large angle of astigmatism. 2, LED lamp bead silver glue 1. The role of silver gum: fixed chip and conductivity. 2. The main ingredients of silver glue: silver powder accounts for 75-80%, Epoxy (epoxy resin) accounts for 10-15%, additives account for 5-10%. 3, the use of silver glue: refrigerated, you need to thaw and stir well before use. After the silver gum is placed for a long time, the silver powder will precipitate. WeChat public account: Shenzhen LED Chamber of Commerce 3, LED lamp bead chips 1, chip function: chip is the main component material of LEDLAMP, which is a glowing semiconductor material. 2. The composition of the chip: The chip is composed of phosphorurate (GAP), aluminum arsenic (Gaalas) or arsenide (GaaS), nitride (GAN) and other materials. Its internal structure is unidirectional conductivity Essence 3, the structure of the chip: welding single line positive polarity (P/N structure) chip, dual -line chip. The size unit of the chip: MIL, the welding pads of the chip are generally gold or aluminum pads. Its welding pads are round, square, cross shape, etc.4. The luminous color of the chip: The luminous color of the chip depends on the wavelength. The commonly visible category is roughly: dark red (700nm), dark red (640-660nm), red (615-635nm), amber (amber (amber (amber (amber ( 600-610nm), yellow (580-595nm), yellow-green (565-575nm), pure green (500-540nm), blue (450-480nm), purple (380-430nm). white light and pink light are a mixed effect of light. The most common is a mix of blue light+yellow fluorescent powder and blue light+red fluorescent powder. 5. The main technical parameters of the LED lamp bead chip: A, chip's ambush characteristic diagram; B, forward voltage (VF): Apply to both ends of the chip to make the voltage of the chip forward direction. This voltage has a corresponding relationship with the chip itself and the test current. VF is too large to break the chip.C. Positive current (IF): After the chip is applied to a certain voltage, the positive direction current generates. The size of the IF is related to the size of the positive voltage. The working current of the chip is about 10-20mA. D, reverse voltage (VR): The reverse voltage applied to the chip.E, reverse current (IR): It refers to a leakage current generated by the chip after applying the reverse voltage. The smaller the current, the better. Because the current is large, it is easy to cause the chip to be penetrated. WeChat public account: Shenzhen LED Chamber of Commerce F, brightness (IV): refers to the brightness of light sources. Unit conversion: 1cd \u003d 1000mcd 單, wavelength: reflect the luminous color of the chip. Different wavelength chips have different glowing colors.單位：nm四、LED燈珠金線金線的作用：連接晶片PAD(焊墊)與支架，并使其能夠?qū)ā?The purity of the golden line is 99.99%AU; the extension rate is 2-6%, and the size of the gold wire is: 0.9mil, 1.0mil, 1.1mil, etc. Five, LED lamp beads epoxy resin Epoxy resin: protect the internal structure of LAMP, which can slightly change the luminous color, brightness and angle of LAMP; make LAMP forming. package resin includes: A glue (main agent), B glue (hardening agent), DP (diffusion agent), and CP (color agent). Its main ingredients are epoxyresin, acid anhydrials, anhydride, and high -gloss diffusion fillers (LightDIFFUSION) and thermal staple dyes (Dye). |
