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US 5,375,043 AGranted
Lighting unit
AssigneeInoue Denki Co., Inc.
InventorMakoto Tokunaga
Life of this patent
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AssigneeInoue Denki Co., Inc.
InventorMakoto Tokunaga
Estimating the term…
Disclosed is a lighting unit of an indirect type, capable of varying the luminance and color of illumination with respect to a target to be lit thereby ensuring an effective display of the target, and further capable of using itself as a display unit. The lighting unit comprises a light guide plate having one side fashioned into an uneven surface or a reflective surface; a plurality of light emitting diodes for supplying a light to the light guide plate, the light derived from the diodes being dispersed through the light guide plate; and a control section which controls actions including blinking of the light emitting diodes. At least a part of the diodes is intended to emit a light different in color from that of the others so that the color or blinking of illumination can be arbitrarily varied through the control by means of the control section.
A lighting unit of an indirect type for substantially uniform illumination, comprising:
A lighting unit for illuminating a liquid crystal display device of the type having a liquid crystal display panel and a control circuit connected to control the selective energization of said liquid crystal display panel, the improvement wherein said lighting unit comprises:
In a display system of the type having a liquid crystal display panel, a control circuit connected to control the selective energization of said liquid crystal display panel, and a lighting unit for supplying light to said liquid crystal display panel, the improvement wherein said lighting unit comprises:
Dependencies are inferred from the claim text.