LED flash has a history of nearly ten years and is currently divided into three camps, namely the vertical structure represented by Osram, the flip-chip structure represented by Philips Lumileds and Jinko, and the formal structure represented by Everlight and Lite-On. Subsequently, Taiwanese manufacturers Epistar, New Century, etc. also rushed into the high-profit LED flash supply chain. Some major domestic packaging manufacturers are also targeting this fertile emerging market and have successively launched a series of LED flash products in the past two years. They have continuously improved the performance of LED flashes in terms of the brightness of the flash and the full spectrum of high color rendering of the light source.
Jinko Electronics, as the only company in China that can mass-produce "gold-wire-free packaging" products and has been in mass production for three years, took the lead in entering the LED flash market by taking advantage of its own flip-chip soldering technology and "package-free" R&D experience. At the end of 2012, it launched a white LED product designed specifically for flash applications - the gold-wire-free ceramic substrate packaged Flash LED light source "E-Flash LED", which has been updated to the third generation.
The technical parameters of EFG series products are:
Pulse current: 1000mA Limit pulse current: EFG@1500
Color temperature (K): 5000-7000K Luminous flux (Lm): 280-360
Color rendering index: 70 Forward voltage (V): 3.0-3.6
Illumination angle: 130° Quality certification: RoHS certification
Product specifications are as follows:
Compared with the formal and vertical structure LED flash products currently on the market, the flip-chip gold-wire-free ceramic substrate packaged Flash LED light source has many advantages:
1. The chip thrust can reach more than 2000g, which has higher reliability;
2. The electrical connection surface is a metal interface, with high thermal conductivity, low thermal resistance, and can withstand large current shocks;
3. No gold wire obstruction, high light color consistency, and more uniform light emission;
4. Gold wire-free packaging technology enables small size and ultra-thin packaging;
5. High brightness, the instantaneous output brightness can reach 300lm.
"The biggest feature of mobile phone flash is that it can use 1.5A high current to achieve instantaneous ultra-high brightness. From this aspect, using flip-chip soldering technology to make flash, because the gold wire is omitted, the electrical connection is made between gold and gold, which shows excellent reliability in withstanding large currents. At the same time, the phosphor is flat-coated, making the light emission more uniform." Jinko Electronics Product Director Ou Weineng further introduced. Compared with traditional packaging structures, LED flash products packaged with gold-wire-free packaging technology can better leverage the advantages of LEDs. The Easy Flash series flash will provide an efficient and high-quality product for various digital products and intelligent transportation systems that use flash.
However, the road to promote domestic LED flash products is not easy, because the market in this segment is mainly occupied by the four major manufacturers such as Osram, Philips, Everlight, and Samsung. It is currently difficult for domestic LED companies to enter the supply chain of mobile phone manufacturers. Moreover, domestic enterprises have a short development time in this area, and LED flash technology is still being explored and improved. This market presents both challenges and opportunities for domestic enterprises.
In this regard, Jinko Electronics product manager Wu Guofeng said, "Flashes require high performance, stability and reliability, and must also consider matching with optical lenses. These put forward many requirements for developers. However, thanks to Jinko Electronics' valuable experience accumulated in flip-chip soldering technology for many years and the business partnership established in close cooperation with customers, flash products are very popular among clients."
"As the shipments of smartphones and tablets continue to rise, the demand for LED flashlights continues to increase, and the profit margin is slightly better than that in the lighting field, which is a good business growth point." Ou Weineng is full of confidence. "Although domestic LED flash lamps have not been able to enter the international mobile phone market supply chain for the time being, as domestic LED companies continue to develop and mature in technology, localization of supply is an irreversible trend in the future." Jinko Electronics will always follow the path of localization development and occupy a certain market position.
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