Advantages and disadvantages of 5050LED lamp white light

There are three main ways to achieve white light with 5050LED lamp beads. Zhengbang Optoelectronics will analyze them one by one for you.

1. Synthesize white light through the red, green, and blue primary color multi-chip set of LED lamp beads and the luminous body.
Advantages: high efficiency, controllable color temperature, and good color rendering.
Disadvantages: The different light attenuation of the three primary colors leads to unstable color temperature, the control circuit is complex, and the cost is high.

2. The blue LED lamp bead chip excites the yellow phosphor, and the LED blue light and the yellow-green light emitted by the phosphor synthesize white light. In order to improve the color performance, a small amount of red phosphor can be added or an appropriate amount of green and red phosphor can be added at the same time.
Advantages: high efficiency, simple preparation, good temperature stability, and good color rendering.
Disadvantages: Poor consistency, color temperature changes with angle.

3. 3. The phosphor excited by the UV LED chip emits three-color synthetic white light.
Advantages: good color rendering and simple preparation.
Disadvantages: At present, the 5050LED chip has low efficiency, UV light leakage problems, and the problem of phosphor temperature stability needs to be solved.

5050 RGB LED Strip Lights

Features of UV LED+RGB three-color fluorescence solution
Advantages: The white coordinate point is only determined by the phosphor itself and has nothing to do with the excitation chip (the discrete nature of the LED chip can be tolerated). It can achieve a very high color reproduction index RI and is theoretically the simplest manufacturing solution. The stability of the color light only depends on the phosphor, which can be very stable.
weakness is. Leaked UV light can damage the LED sealant, causing equipment life issues. The light conversion efficiency is not high, and it has its own problems such as absorption and light transmission.

Features of 5050 LED (blue) + phosphor (yellow) solution
advantage. With only a single phosphor, manufacturing is relatively simple. Phosphors for blue light alone are mature and abundant. The color reproduction of white light is moderate (RI?75%). The stability of phosphors can already meet the requirements for color restoration.
The disadvantages are: low light conversion efficiency, low self-absorption, poor light transmittance, etc. Color reproduction is not high enough. Color stability is greatly affected by temperature and driving current. The color changes as the viewing angle changes.

5050 RGB LED Strip Lights

Features of 5050 RGB three-primary color LED color mixing solution
advantage. Highest photoelectric efficiency. From a long-term development perspective, this solution will be the mainstream solution. Any color adjustment can be made. Excellent color rendering ability (RI). Very wide color gamut range.
Disadvantages: Complex color feedback control is required to compensate for the changes in LED5050 material properties with temperature and the light attenuation characteristics of the LED. The color adjustments are very weird and variable. Therefore, the white light implementation method of 5050 LED lamp beads