LED integrated light source with high color rendering index and wide adjustable color temperature

• Main Authors: RAO CHAO, YU JINGJIE, ZHANG YANJIE, TIAN MAOLIN, LIANG RUNFA, ZHANG JINGHUI, CAO GUANYING
• Format: Patent
• Language: Chinese; English
• Published: 14.07.2020
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; SEMICONDUCTOR DEVICES

The invention provides an LED integrated light source with high color rendering index and wide adjustable color temperature. A transparent glue body or fluorescent powder for single packaging coats blue light LED chips, so that a red light source, a green light source, a yellow light source and a blue light source can be obtained; the light sources are packaged on a COB substrate in a certain regular arrangement mode; the driving parameters of each LED light-emitting channel are obtained through an optimization algorithm; finally, the LED integrated light source with the high color rendering index and wide color temperature adjustable range is realized. The color temperature range of the integrated light source can be continuously adjusted from 2000K to 10000K; and the color rendering indexes of the LED integrated light source are generally more than 95; and therefore, the lighting requirements of people on continuously adjustable color temperature, a wide color temperature adjustablerange and a high color re