The design of a large-sized directional backlight module based on a laser-ablated light guide plate

• Main Authors: Tseng Li-Wei, 曾立偉
• Other Authors: Teng Tun-Chien
• Format: Others
• Language: zh-TW
• Published: 2013
• Online Access: http://ndltd.ncl.edu.tw/handle/y7fg27

碩士 === 國立臺灣師範大學 === 機電工程學系 === 102 === This studyis to design a large-size directional backlight module based on a laser-ablated light guide platewith high collimation can be applied to3D Directional sequential backlight, and its advantages are can use full resolution of liquid panel and without energy consumption. We treat the surface of PMMA light guide plane(LGP)with CO2digital laser.The energy oflaser affectsthe size and shape of structure onLGP. The light emitted from the LGP with superficial structures(SMC LGP)on it which treated with low-energy laser is concentrated and away from normal directionof output surface.Due to the superficial structureson the LGP, we can overlap anotherSMC LGP on it without destroyingits concentration of output light.We build the model of directional sequential backlightmodule which hastwo SMC LGPsand a Multi-slope inverse prism film(MIPF) byLighttools. The simulation results show the intensity peak are at 5∘and -4∘; the full width half maximum(FWHM)are 13∘and 10.5∘; the crosstalk are 5% and 7%. The transverse width ofDSB module reaches 480 mm. It can provide more than 20 inches 3D monitor or 3D TV applications.