Seven-primary-color LED mixed light source and driving control circuit thereof

Abstract

The invention discloses a seven-primary-color LED mixed light source and a driving control circuit thereof, and the seven-primary-color LED mixed light source comprises a main control module which isused for receiving a dimming control signal and converting the dimming control signal into seven PWM signals with corresponding duty ratios; a constant-current driving module which is composed of seven constant-current driving boosted circuits, is used for converting the direct-current 24V voltage of a direct-current power supply into a direct-current voltage not exceeding 36V, is adjustable in output current, and is used for driving a backward-stage seven-color LED array; and the seven-color LED array which is composed of seven groups of independently configured monochromatic light LED sub-arrays, is connected with the corresponding constant-current driving boosted circuits respectively, and is used for emitting the specified colors according to the specified duty ratios and under the control of the LED sub-array control voltages output by the constant-current driving boosted circuits.

Description

technical field [0001] The invention relates to the technical field of LED (Light Emitting Diode, light emitting diode) display, in particular to a seven-primary-color LED mixed light source and a driving control circuit thereof. Background technique [0002] At present, common white light LEDs have poor spectral continuity and insufficient color gamut, especially the low R9 (special color rendering index), which cannot express certain colors, and the colors cannot be adjusted. The "rich blue" blue light damage is even more harmful Human physiology, psychology and optic nerves bring a series of negative effects. [0003] In order to solve this problem, the industry also proposes to use full-spectrum LEDs. Although it can make up for the shortcomings of the above-mentioned insufficient white light quality, they are all based on three primary colors, purple light that does not have a bactericidal effect, blue-green light at 480-505nm, and blue-green light at 560-590nm. Yellow...

AI Technical Summary

Problems solved by technology

[0002] At present, common white light LEDs have poor spectral continuity and insufficient color gamut, especially the low R9 (special color rendering index), which cannot express certain colors, and the colors cannot be adjusted. The "rich blue" blue light damage is even more harmful A series of negative effects on human physiology, psychology and optic nerve

[0003] In order to solve this problem, the industry also proposes to use full-spectrum LEDs. Although it can make up for the shortcomings of the above-mentioned insufficient white light quality, they are all based on three primary colors, purple light that does not have a bactericidal effect, blue-green light at 480-505nm, and blue-green light at 560-590nm. Yellow-orange light in between, and deep red light at 630nm and above

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