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Journal of Display Technology

Journal of Display Technology


  • Vol. 9, Iss. 12 — Dec. 1, 2013
  • pp: 965–971

Design of a Hybrid Light Guiding Plate With High Luminance for Backlight System Application

Jui-Wen Pan and Ya-Wen Hu

Journal of Display Technology, Vol. 9, Issue 12, pp. 965-971 (2013)

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We proposed a novel backlight system, which consisted of a hybrid light guide plate (LGP) and one diffuser sheet. The hybrid LGP contains a flat plate without any microstructures and one layer of optically patterned film (OPF). Comparing with the conventional edge-lit backlight system, the on-axis luminance could be improved to 6.1 $\times$ by using the novel backlight system and the half-luminance angle decreased from 21 deg to 10 deg in vertical direction, and decreased from 21 deg to 6 deg in horizontal direction. At the same time, this design also achieved a uniformity of illumination of 89%. The design can predigest the fabrication and reduce the number of components. Moreover, since the microstructures arrangement was periodical, user could use light-emitting diodes (LEDs) on the both sides. When user turned on both side LEDs, the on-axis luminance were improved 1.7 $\times$ comparing with turning on single side LEDs.

© 2013 IEEE

Jui-Wen Pan and Ya-Wen Hu, "Design of a Hybrid Light Guiding Plate With High Luminance for Backlight System Application," J. Display Technol. 9, 965-971 (2013)

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