SMD light and color adjusting LED lamp and manufacturing method thereof

Abstract

The invention discloses an SMD light and color adjusting LED lamp and a manufacturing method thereof. The SMD light and color adjusting LED lamp comprises a first substrate, LED chips which are uniformly arranged on the upper surface of the first substrate at intervals and are different in color temperature, and a second substrate connected with the lower surface of the first substrate; the secondsubstrate is provided with a circuit connection layer for electric conduction, and guiding-out bonding pads which are connected with the circuit connection layer and used for being connected with anexternal power source; and circuits corresponding to the LED chips with different color temperatures are distributed on the upper surface of the first substrate, and the positions where the circuits on the upper surface of the first substrate intersect are provided with through holes which are used for guiding the circuits to the lower surface of the first substrate so that the circuits can be connected with the circuit connection layer. According to the technical scheme disclosed by the invention, the first substrate is provided with the through holes, the LED chips different in color temperature are uniformly arranged on the surface of the first substrate at intervals, accordingly, wire jumping is not needed, the light emitting effect of the light and color adjusting LED lamp is good, and light spots are uniform.

Description

technical field [0001] The invention relates to the field of lighting technology, more specifically, to a chip-type dimming and color-adjusting LED lamp and a preparation method thereof. Background technique [0002] LEDs (Light Emitting Diodes, Light Emitting Diodes) whose brightness and color temperature can be adjusted freely are favored by users because of their high efficiency, energy saving, long service life, and environmental protection. [0003] At present, the common dimming and color LED lights are divided into two structures: COB (Chip On Board, chip on board) and SMD LED. For dimming and color-adjusting COB, in order to achieve mutual switching between different color temperatures, at least two LED chip circuits need to be integrated in the light-emitting surface, which will make the circuit on the surface of the substrate more complicated, and there will be differences between different circuits. In order to avoid the mutual influence between different lines, ...

AI Technical Summary

Problems solved by technology

However, the jumper will not only increase the preparation cost of the product, but also may cause dead lights, thereby reducing the reliability of the product

For patch-type dimming and color-changing LEDs, the LED chips of different color temperatures are placed separately to avoid the use of jumpers. However, the arrangement of LED chips with different color temperatures is relatively rigid, which will lead to poor light output and light spots. Inhomogeneity, its specific structure can be found in figure 1 , which shows a schematic structural diagram of an existing patch-type dimming and color-adjusting LED, wherein the left and right sides are LED chips with different color temperatures

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