50 Questions and Answers on EL Sheets Technical Knowledge
50 questions and answers to understand all aspects of EL sheets
Q: How large can the size of luminescent EL sheets be? A: size of an single EL luminescent film depends on screen printing machine, Lighted-Glow’s maximum single sheet size is 80×160cm. EL luminescent sheets can be spliced together, so their area can be greater than 10 square meters.
Q: How many colors are there for EL sheets? A: Common colors of EL luminescence include green and blue-green. White light can be achieved by adding dyes and pigments. Other colors are obtained by printing on the outer surface of luminescent sheet or converting color of light.
Q: Can EL sheets be used outdoors? A: It is not recommended for users to use it outdoors, especially for long-term use. Its color will change and its service life will be greatly shortened.
Q: What is the reason for the decrease in EL chip brightness? A: Main reason for decrease in luminescent brightness of EL sheets is the aging of luminescent materials caused by moisture (water molecules) in the air.
Q: What are the features of EL sheets after aging? A: When not emitting light,its surface turns gray or black, and black spots (blocks) appear when emitting light.
Q: Is EL aging during non luminous operation? A: When EL is not working, it will not cause aging, including devices such as EL sheets(EL panels) and EL wires.
Q: EL luminescent electronic detection standard? A: International and domestic organizations have established EL detection standards AC115V, 400HZ.
Q: Will EL cold light suddenly turn off after reaching its service life? A: During EL aging, the brightness gradually decreases and sudden loss of brightness does not occur.
Q: EL cold light luminescence life index? A: EL life is divided into half life and full life concepts.
Q: Half life? A: The time when initial brightness decreases by half is half lifespan. Usually 3000 hours. Total lifespan is approximately 8000 hours.
Q: EL cold light emitting sheet flashing control? A: EL flashing control is achieved using the chip in driver, and its control time and multi channel multi segment are also determined by the circuit chip.
Q: Drive power supply voltage? A: Large area and size can be completed with DC12V and transformer. Clothing can be DC3V, 4.5V, etc
Q: Can I cut it? A: Within the design scope, it is possible to cut and cut, but it cannot be understood as ‘arbitrary ‘.
Q: EL luminescent thickness? A: After sealing the protective film, thickness is usually less than 0.5mm
Q: Can EL cold light luminescence be used with AC220V/110V? A: Specially processed EL sheets can be used directly under AC220V/110V (mains).
Q: How many colors are luminescent powders used for EL cold light emission? A: EL luminescent materials include red (toxic), orange (relatively low brightness), blue (short lifespan), and green. Green and blue-green are commonly used.
Q: What is the power of EL cold light emitting sheet? A: Production of different materials and factories is different. But it is usually less than 60W/square meter.
Q: How bright is EL cold light emitting? A: Normally, EL emits 70-90 Cd/square meter of light under standard test conditions of 115V and 400Hz.
Q: Is it good for EL cold light emitting device to be very bright? A: Brightness higher than 100 Cd/square meter will significantly reduce its service life.
Q: Why does production of EL cold light luminescence take a long time? A: Most EL manufacturers uses screen printing technology, and pattern making takes time. Generally, sampling takes 7 working days.
Q: Why is the price of sample EL luminescent sheet very expensive? A: Screen printing technology and pattern making require a large amount of material consumption, and only mass production costs can be reduced.
Q: Difference between fluorescence phosphorescence luminescence? A: From the perspective of luminescence physics, the meaning is basically the same. Difference in the original definition is: 1) Luminescence: the literal meaning is broader, referring to all bright phenomena; 2) Fluorescence: It refers to the luminescence caused by the passive action of a specific material itself; 3) Phosphorescence: The phenomenon of a material that emits light for a longer time than fluorescence. They can also be specifically classified as photoluminescence, electroluminescence, chemiluminescence, X-ray luminescence, and so on.
Q: What are the 3 primary color luminescent powders? A: Red blue green 3 color luminescent material is simply referred to as 3 primary color powder. It can be luminescent materials for lamps, display luminescent materials, etc. Its main goal is to achieve white luminescence in a proportional manner.
Q: Does EL emit ultraviolet light? Classification of UV luminescent materials? A: Most luminescent materials emit light under ultraviolet radiation. It is the fundamental point of photoluminescence materials, specifically: organic/inorganic, long wave/short wave, etc.
Q: What are the forms of EL luminescent sheets? A: There are 4 types: EL plastic screen, EL enamel screen, EL glass screen, and EL luminescent cloth.
Q: Can EL cool white glow be as white as paper? A: EL white luminescence is achieved using dyes, which vary in temperature, diluent ratio, and other factors that can affect the color.
Q: Can EL cold light sheets be bent? A: It can be completely bent, but it can only be an arc.
Q: Can EL cold light sheets be connected by themselves? A: Do not connect and modify the controller on your own.
Q: Can the EL cold light sheet be repaired on its own if it is damaged? A: No way.
Q: EL sheet price calculation method? A: EL price is calculated in square centimeters, and whether it includes the driver needs to be separately specified.
Q: Can EL have brightness changes? A: Ordinary EL cannot achieve brightness changes.
Q: What are the categories of EL drivers? A: EL drivers are divided into general and specialized categories (specially designed), and the general category is suitable for testing or experimental use.
Q: What are the main correspondence indicators between EL drivers and luminescent chips? A:Driving area and flashing state (multi-channel and time) should be equipped with a dedicated driver for each type of LED.
Q: EL luminous sheet visible distance? A: 0.1 square meters at night with a visible distance of over 200 meters.
Q: How many types of EL driver are there? A: There are mainly 3 types: 1) Transformer type drive (commonly used, with a large area, mainly used in advertising); 2) Chip based driver (with small driving area, mainly used in electronic supporting products); 3) No driver (not commonly used, low brightness, mainly used in simple dark lighting.
Q: What data do you need to provide before processing customized EL sheets? A: Size, pattern, flash time (GIF file or flash), controller voltage used, and wire length.
Q: Will EL cold light film and EL wire generate heat when used? A: EL devices that work normally do not generate heat, but when the driver does not match the LED line, it will generate heat. Long term use can damage the driver or light emitting device, and even lead to combustion.
Q: Will there be noise when EL devices are working? A: Most EL devices produce sound during operation, except for chip based drivers.
Q: Why does EL advertising sheet gradually change color? A: EL backlight is mainly produced in white, which is matched with fluorescent dyes. Fluorescent dyes will gradually fade after a certain period of time or under ultraviolet radiation.
Q: What are the types of electroluminescence? A: Organic light-emitting devices (large/small molecules), inorganic thin film devices, inorganic thick film devices, inorganic powder devices (this product)
Q: What are the voltage types of electroluminescent devices? A: High field voltage devices (this product), low field voltage devices (LED, OEL).
Q: What are the determining factors for the softness of plastic EL sheets? A: Softness determines thickness of PET film, which becomes very soft when it is less than 0.1 millimeters.
Q: Can clothing be used? A: Clothing can be used, but EL sheets cannot be washed.
Q: What is the brightest color of EL? A: Blue green or green
Q: Can EL devices have a color change effect? A: EL devices are controlled through processes, and the outer surface is masked to visually achieve color change.
Q: What is the principle of EL devices flashing and emitting light to create a delicate flowing water effect? A:Realized through delicate line printing and circuit by circuit control
Q: Can the EL device button battery be used。 A: A small area of EL sheet and twisted button battery can be used.
Q: Is there a method to improve the brightness of EL luminescent plates? A: Increasing voltage and frequency can improve brightness, but with limited limitations, brightness can be above 150 Cd/m2.
Q: Is there an international patent restriction for EL luminescent sheet? A:There are no international patent restrictions on devices, but there are restrictions on long-life EL materials, and China Lighted-Glow has its own intellectual property rights.
