Light device and its light emitting diode module

A light emitting diode module, comprising:

• a substrate, comprising a positive pole and a negative pole;
• an arrayed light emitting group, comprising a plurality of light emitting strings electrically coupled to the positive pole and the negative pole in parallel, each one of the light emitting strings comprising:
• N number of blue light emitting diode chips for emitting a blue light with a luminescence wavelength range from 445 to 460 nm;
• and
• M number of red light emitting diode chips for emitting a red light with a luminescence wavelength range from 600 to 630 nm, the red light emitting diode chips and the blue light emitting diode chips disposed on the substrate in series, the red light emitting diode chips in an interlaced arrangement between the blue light emitting diode chips, wherein N number and M number are positive integers, and M>N≧1;
• and
• a single sealant body for covering all of the light emitting strings, and being uniformly dispersed with a plurality of phosphors with a luminescence wavelength range from 520 to 570 nm,
• wherein the phosphors in the single sealant body are excited by a part of the blue light and then generate a yellow green light, and a white light with a color temperature range between 10000K to 2500K is mixed by the yellow green light, the red light and the other part of the blue light.