Patent ID: 8865093

Claim:
A polymorph preparing and screening method, comprising the following steps: providing a plurality of substrates each made of different materials; disposing an organic material in a environment with temperature about 60-100° C., and continuously adding a solvent slowly into the organic material in order to dissolve the organic material, so as to produce a high-temperature saturated solution; applying the high-temperature saturated solution to the plurality of substrates and then disposing the plurality of substrates under room temperature to cool down the high-temperature saturated solution on the plurality of substrates, and then allowing the solvent to volatilize to make the organic material crystallize on the plurality of substrates each made of different materials, thereby forming a plurality of polymorphs having different characteristics; and using a characteristic analyzing unit comprising a differential scanning calorimeter, an optical microscope, a Fourier transform infrared spectroscope, or a X-ray diffractometer to screen the plurality of polymorphs to obtain polymorphs with a desired characteristic; wherein the plurality of substrates are selected from the group consisting of a semiconductor wafer substrate, a polymeric substrate, and a plastic substrate; wherein the plurality of substrates each made of different materials are disposed on a same base plate.