Integrated LED (light-emitting diode) with balancing mechanism and manufacturing process thereof
An integrated and mechanism-based technology, applied to components of lighting devices, lighting and heating equipment, electrical components, etc., can solve problems such as unbalanced operating temperature and luminous efficiency, discounted LED service life, unbalanced current, etc., to achieve packaging The effects of stability, life guarantee, and current balance
Inactive Publication Date: 2012-12-19
SUZHOU JINKE XINHUI PHOTOELECTRIC TECH
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Problems solved by technology
[0002] At present, the cob integrated LED adopts polycrystalline series and parallel connection, but LED is a current element, and its voltage is not fixed, so each LED has a slight voltage difference (0-0.5V), but the voltage after multiple LEDs are connected in series The difference will accumulate and increase, and the direct parallel connection will cause the current imbalance of each channel. Even if it is sorted in advance, the LED will be unbalanced again due to the difference in operating temperature and luminous efficiency.
During use, most of the current part is small, which will cause accelerated aging of the branch circuit with large current. The problem of current imbalance can be solved by setting compensation resistors. If each string of pull wires is connected to a resistor to compensate the difference and limit the current, it can The degree of unbalance is controlled, but in the cob multi-series-parallel circuit, if it is necessary to pull out each series branch to connect compensation resistors, the product will become very complicated, so this problem has been ignored and adopted in the prior art. The attitude of inaction has greatly reduced the service life of LEDs, and the solution to this problem is still blank
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[0020] The present invention will be specifically introduced below in conjunction with the accompanying drawings and specific embodiments.
[0021] see figure 1 , the integrated LED with a balance mechanism of the present invention includes several parallel polycrystalline strings, wherein the polycrystalline strings are connected in the circuit, and their two ends are respectively connected to the positive and negative poles, including several LED chips 1 and one for The balance film 2 for adjusting the resistance value by laser is specifically a carbon film or a metal film. As a preference, we use the cob board to fill the carbon film or metal film with printing technology.
[0022] As a specific structure, the carbon film or metal film is filled in the position where the polycrystalline string is connected to the positive or negative electrode. Therefore, in the actual process, a jumper is reserved in advance at the position where the polycrystalline string is connected to...
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The invention discloses an integrated LED (light-emitting diode) with a balancing mechanism, which is characterized by comprising a plurality of polycrystalline strings which are connected in parallel. Two ends of each polycrystalline string are connected with a positive pole and a negative pole respectively. Each polycrystalline string comprises a plurality of LED chips and a carbon or metal film for adjusting resistance by laser. The invention further discloses a manufacturing process of the integrated LED with the balancing mechanism. The integrated LED with the balancing mechanism is stable in packaging and balance in current so that the service life is guaranteed. The manufacturing process of the integrated LED with the balancing mechanism is simple, practical and low in cost.
Description
technical field [0001] The invention relates to an LED and its manufacturing process, in particular to an integrated LED with a balance mechanism and its manufacturing process. Background technique [0002] At present, the cob integrated LED adopts polycrystalline series and parallel connection, but LED is a current element, and its voltage is not fixed, so each LED has a slight voltage difference (0-0.5V), but the voltage after multiple LEDs are connected in series The difference will accumulate and increase, and the direct parallel connection will cause the current imbalance of each channel. Even if the LEDs are sorted in advance, the LEDs will be unbalanced again due to the difference in operating temperature and luminous efficiency. During use, most of the current part is small, which will cause accelerated aging of the branch circuit with large current. The problem of current imbalance can be solved by setting compensation resistors. If each string of pull wires is conn...
Claims
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IPC IPC(8): F21V19/00H01L33/48F21Y101/02
Inventor 傅立铭
Owner SUZHOU JINKE XINHUI PHOTOELECTRIC TECH