Method for preparing light conducting plate three-dimensional optical structure through heat pressing process
The present invention is hot pressing process of producing light guiding board in stereo optical structure. The hot pressing process includes the following steps: installing the metal mold including upper and lower mold to form mold cavity with stereo optical structure in its one or two surfaces on...
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Zusammenfassung: | The present invention is hot pressing process of producing light guiding board in stereo optical structure. The hot pressing process includes the following steps: installing the metal mold including upper and lower mold to form mold cavity with stereo optical structure in its one or two surfaces on the machine; setting acrylate resin board or polycarbonate resin board inside the metal mold, closing the mold with pressure of 2-20 MPa, heating to 100-200 deg.c, raising the mold locking pressure to 5-20 MPan and maintaining for 1-5 sec, cooling, curing; and demolding at temperature lower than 80 deg.c to take out the light guiding board. The light guiding board thus produced has the advantages of high brightness, homogeneous light scattering and low cost, and may be used in assembling excellent back lighting device. |
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