Cob light source manufacturers have _cob light source manufacturers ranking

The COB light source is a high-efficiency integrated surface light source technology in which the LED chip is directly attached to a high-reflection mirror metal substrate. This technology eliminates the bracket concept, electroless plating, no reflow soldering, and no patching process, so the process is reduced by nearly three points. One of them, the cost is also saved by one third. The COB light source can be simply understood as a high-power integrated surface light source, and the light-emitting area and external dimensions of the light source can be designed according to the product outline structure.

Product features: cheap and convenient

Electrically stable, circuit design, optical design, heat dissipation design is scientific and reasonable;

The use of heat sink process technology ensures that the LED has an industry-leading heat lumen maintenance rate (95%).

It is convenient for secondary optical matching of products and improves lighting quality. ;

High color, uniform light, no spot, healthy and environmentally friendly.

The installation is simple, the use is convenient, the design difficulty of the lamp is reduced, and the processing of the lamp and the subsequent maintenance cost are saved.

The COB chip-on-chip (ChipOnBoard, COB) process first covers the wafer placement point with a thermally conductive epoxy resin (usually an epoxy resin doped with silver particles) on the surface of the substrate, and then directly places the silicon wafer on the surface of the substrate and heats it to The silicon wafer is firmly fixed to the substrate, and then an electrical connection is directly established between the silicon wafer and the substrate by wire bonding.

There are two main types of bare chip technology: one is COB technology and the other is flip chip technology (FlipChip). On-board chip package (COB), the semiconductor chip is placed on the printed circuit board, and the electrical connection between the chip and the substrate is realized by a wire stitching method and covered with a resin to ensure reliability.

Philips, founded in the Netherlands in 1891, produces lighting, home appliances and medical systems. Philips has a global workforce of 128,100 in 2007. It has production bases in 28 countries around the world, sales offices in 150 countries, and 80,000 patents. On July 11, 2011, Philips announced the acquisition of Pentium Electric (Shanghai) Co., Ltd., amounting to about 2.5 billion yuan.

Philips Electronics is one of the world's largest electronics brands, ranking first in Europe. Leading the world in color televisions, lighting, electric shavers, medical diagnostic imaging and patient monitoring instruments, and single-chip TV products. With 166,500 employees, Philips is active in lighting, consumer electronics, home appliances and medical systems in more than 60 countries. Philips is listed on the New York Stock Exchange (codenamed PHG), London, Frankfurt, Amsterdam and other stock exchanges. In 2003, the company's sales were 29,000,000,000 euros. In 2004, it was rated as an advanced quality enterprise by the Music Angel Organizing Committee. The company employs more than 164,000 employees in more than 60 countries. Philips is a comprehensive group that serves the professional and consumer markets through three cross-cutting sectors: healthcare, lighting and quality of life.

Op Lighting started in 1996 and is a comprehensive lighting company integrating R&D, production, sales and service. Opal Lighting successfully landed on the main board of the Shanghai Stock Exchange on August 19, 2016 and was officially listed. The stock is referred to as "Ou Pu Lighting", stock code: 603515.SH.

As the overall lighting solution provider in China's lighting industry benchmark, Op Lighting is not only committed to the rational use of light, providing intimate products, but also providing consumers with differentiated integrated lighting solutions and other professional supporting services to enhance the user experience. For different occasions, Op's lighting solutions can meet the needs of people at different times, different spatial physiological needs and psychological needs.

Established in 1918, Matsushita Electric Industrial Co., Ltd. is the founder of Matsushita Yukio, who is known as the "God of Management." At the beginning of the establishment was a small workshop consisting of three people, one of whom was later founder of Sanyo, Mr. Izuo. After several generations of efforts, it has become a world-famous international comprehensive electronic technology enterprise group, and has carried out business activities in various countries around the world.

Panasonic is a multinational company in Japan with more than 230 companies worldwide and more than 290,493 employees. Among them, there are more than 54,000 people in China. In 2001, the total sales volume was more than 61 billion US dollars, ranking 26th among the world's top 500 manufacturing companies.