Four-color light source circuit board used for LED packaging

Abstract

The invention discloses a four-color light source circuit board used for LED packaging. The four-color light source circuit board comprises an insulating type PCB substrate and a circuit thereon; thePCB substrate consists of multiple square unit substrates; four regions are symmetrically formed on the front surface of each unit substrate on average; a common bonding region is arranged in the center of the four regions; non-common die-bonding bonding regions are arranged on the four regions respectively; a common-bonding bonding pad and non-common-bonding bonding pads are arranged on the backsurface of each unit substrate; the common bonding region is connected with the corresponding common-bonding bonding pad through a common conduction hole; and the non-common die-bonding bonding regions and the non-common-bonding bonding pads are connected in one-to-one correspondence manner through surface copper-clad conduction holes. Through the limiting structure, packaging of light emitting diode chips of four kinds of different colors is realized; meanwhile, the connecting circuit can be optimized to satisfy the LED thermal conduction requirement; and the four-color light source circuit board can be applied to LED display and packaging, and the color fidelity of the LED display screen can be highly improved.

Description

technical field [0001] The invention relates to the technology in the field of circuit boards, in particular to a four-color light source circuit board used for LED packaging. Background technique [0002] As a new type of high-efficiency solid light source, semiconductor lighting has significant advantages such as long life, energy saving, environmental protection, and safety. It will become another leap in the history of human lighting after incandescent lamps and fluorescent lamps. The upgrading of the industry and other industries has huge economic and social benefits. For this reason, semiconductor lighting is generally regarded as one of the most promising emerging industries in the 21st century, and it is also one of the most important commanding heights in the field of optoelectronics in the next few years. Due to its energy-saving, environmental protection, safety and other advantages, light-emitting diodes have been widely used in lighting, electronic devices and ...

AI Technical Summary

Problems solved by technology

For full-color displays, the traditional RGB three-primary color technology is commonly used. A display unit is packaged with red primary color, green primary color, and blue primary color light-emitting diode chips. Due to the limited color gamut of the RGB three primary colors, the traditional RGB-based Advanced LED display lamp beads are difficult to truly reproduce the original color, and there is a defect of lack of color fidelity

[0004] At present, as the light intensity of LED lights continues to increase, and the light color requirements are becoming more and more abundant, it is necessary to integrate LED chips with different light-emitting colors (red, green, blue, and white) into a small area. Optical LED chips are widely used in required fields due to their high luminous efficiency. In this way, single and double chips with different electrodes can be integrated in a small area. Ordinary circuit boards cannot meet the requirements of LED heat conduction and the coexistence of single and double electrode chips. need

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