substrate 1 where the cover plate shield 5 is secured to its place by the use of clips or clamps 6 in this depiction the cover plate 5 covers the area of the insulation 4 and that of the two electrodes 3 a and 3 b so that during vacuum deposition coating process the insulation area 4 is free from accidental coating with metal from this perspective it is clear that the clips or clamps 6 can interfere with the vacuum deposition coating of the reflection unit 2 depicted in fig4 is a cross section view of fig3 where the clips or clamps 6 are clearly in the way of obstructing vacuum deposition coating of reflector unit 2 also depicted here is the shield member 5 covering the insulation material 4 and the two electrodes 3 a and 3 b in accordance with one embodiment of present invention fig5 discloses both the top view and cross section view of a led chip substrate 1 with a shield member exhibiting ferromagnetic property 10 covering the insulation material 4 and the two electrodes 3 a and 3 b further consistent with one of the embodiment of present invention the cover plate 5 can be changed in its thickness 8 and its shape 7 here the magnet 9 is not disclosed depending on what the desired result.