H ELECTRICITY
H01 ELECTRIC ELEMENTS
H01L SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
23/00 Details of semiconductor or other solid state devices
H01L23/28 Encapsulations, e.g. encapsulating layers, coatings,; e.g. for protection
H01L23/29 characterised by the material; , e.g. carbon
H01L23/293 Organic, e.g. plastic
H01L23/295 containing a filler