Optical member and method for manufacturing same, backlight unit using the optical member, and method for manufacturing the backlight unit
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United States of America Patent
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Sep 20, 2016
Grant Date -
Aug 15, 2013
app pub date -
Aug 30, 2011
filing date -
Nov 10, 2010
priority date (Note) -
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status (Latency Note)
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Abstract
The present invention relates to an optical member, comprising: a light incidence surface; and a light-emitting surface which comprises a patterned portion intended for adjusting the intensity of light and formed at an area corresponding to a light source, and an adhesive portion disposed in an area other than the patterned portion. When the optical member of the present invention is applied to a backlight unit, the patterned portion, which diffuses the light from the light source, is formed in the area corresponding to the light source so as to effectively diffuse the light from the light source into the peripheral area. Also, the optical member and a diffusion plate are stacked via an air layer in the area corresponding to the light source (the area in which the patterned portion is disposed), and the optical member and the diffusion plate closely contact each other without an air layer in the remaining area, such that the intensity of the light transmitted between a light source portion and the peripheral portion may be adjusted with an improvement in the balance of brightness and uniformity.
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