Introduction to COB light type improvement scheme

As LED products production release, prices decreased significantly, and continue to improve product performance and perfect, cost-effective leds become our choice of all kinds of lighting, high efficiency and energy saving advantages of market recognition. Throughout the LED the status quo, serious product homogeneity, the breakthrough of the iconic few and far between. Released from government subsidies to the chip production capacity, the cost-effective packaging material localization, encapsulation equipment expansion and efficiency improvement, greatly small lamps factory labor intensive processing and so on, by 5 ~ 10 years of explosive growth of production capacity,

LED from original tall, the semiconductor industry has become very traditional lighting industry today, LED enterprise seems to have assumed step of difficult, sales channel development investment, better meet customer demand, to expand market share has become each LED manufacturers, at the same time looking for differences into each LED manufacturers survival tool. Optical quality requirements gradually increase as customers, products are light color, light type will be promoted to a high effect. In the introduction to COB product light type improvement scheme. The images were focused on COB product design and development of the typical cases of the same party type photoelectric light recently improved: COB lamp bead is mainly used for tube light, bulb lamp, wall lamp,

PAR lamp, ceiling lamp, lamp, table lamp, etc. , is a universal problem at present the industry product of lamps and lanterns light spot, macular, yellow, blue, dark space, uneven light type and so on questions, most of the customers can only reluctantly accepted. Spot problem the main reason is that COB lights and lamps and lanterns lens ( Reflective cup) Matching problems: 1. Lamp bead design is not reasonable, do small wattage products with smooth surface, less number of chips, uneven, there is dark area; 2. Lens ( Reflective cup) The secondary optical design is unreasonable, lamp beads emit light can not be used to obtain a uniform ( Lens problem does not make the discussion) 。 Type lamp bead light to improve the initial solution: now in the fierce competition in the industry environment, double increase the cost of lamp bead is not an option, simple repeated trials will consume a large amount of manpower material resources. A lot of cold and hot shock experiments show that gold wire is too long, light a greater risk of death, welding line poor stability, wire arc shape deviation related technical indicators. So in the related product design lamp bead stability first, then both product light type design, but this plan cannot meet the demand of market to light quality. Is there a more perfect solution? one Suit products to improve light type. Suits the product temporarily ignore the gold thread length ( According to the type of light effect to increase the number of chips as appropriate) , by reasonable chip arrangement with customer secondary optical lens ( Reflective cup) And complete the best type of light effect. This solution product gold line length, product design is unreasonable, the failure risk, not mass production. Success stories: 2. Flip chip stents and formal design perfect combination inversion new stents, its specific requirements are as follows: 1. Stent size and shiny surface matching and formal stent; 2. Flip chip bonding pad and formal chip location. The flip chip product arrangement copy dress chip arrangement. Forming of flip chip product homogeneous light, no obvious yellow circle, dark space, use a simple and quick way to solve product light type solution experiments, save time, improve the cost is low. But this scheme has been limited and stable customer orders, if customer change lamps and lanterns, may need to customize the new board. Success stories: about COB product light type improvement scheme, the same party photoelectric technology personnel research to focus on this problem, by phosphors related adjustment, arrange adjusting chip, adhesive surface adjustment has given specific customer related light type improvement solution. For customers to provide first-class technical service is our tenet.