Plane-like lighting units and display equipment provided therewith
AssigneesHitachi Displays, Ltd., Panasonic Liquid Crystal Display Co., Ltd.
InventorsMasaya ADACHI, Ikuo Hiyama, Makoto Tsumura, Shusuke Endo
Life of this patent
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Abstract
A light unit which includes a plurality of light-emitting diode (LED) light sources arranged in parallel, a light-guiding member arranged on said LED light sources, a light reflecting part for reflecting light from said LED light sources forward, a light diffusion part for outgoing light from the surface of said light-guiding member to outside, and an optical path changing part arranged above said light-diffusion part, wherein a side of said light-guiding member that faces said light diffusion part is flat.
Claims18
A display apparatus comprising:
- a display panel for adjusting transmittance of light;
- a light unit comprising a plurality of linear-shaped light sources;
- and
- a control means for independently controlling an activation and a deactivation of the plurality of linear-shaped light sources according to an operation of the display panel,
- wherein the light unit includes a light-guiding plate having thickness that decreases with an increase in a distance from the linear-shaped light sources and comprising thin portions which are distant from the linear-shaped light sources,
- wherein the light unit is constructed to light independently a plurality of display areas obtained by dividing the display panel into multiple sections at the thin portions of the light-guiding plate, and
- wherein the control means provides control so as to radiate light of the plurality of linear-shaped light sources according to the operation of the plurality of display areas.
A display apparatus comprising:
- a display panel for adjusting transmittance of light;
- a light unit comprising a plurality of linear-shaped light sources;
- and
- a control means for independently controlling an activation and a deactivation of the plurality of linear-shaped light sources according to an operation of the display panel,
- wherein the light unit includes a plurality of light-guiding plates having thickness that decreases with an increase in a distance from the linear-shaped light sources, each of the plurality of light-guiding plates including a thin portion which is distant from the linear-shaped light sources,
- wherein the light unit is constructed to light independently a plurality of display areas obtained by dividing the display panel into multiple sections at each of the thin portions of the plurality of light-guiding plates, and
- wherein the control means provides control so as to radiate light of the plurality of linear-shaped light sources according to the operation of the plurality of display areas.
Dependencies are inferred from the claim text.