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Light source apparatus and display apparatus

A light source device and display device technology, applied in the direction of light source, measuring device, identification device, etc., can solve the problems of increasing the number of light-emitting diodes, increasing the cost, and deteriorating energy consumption efficiency

Inactive Publication Date: 2007-01-17
SONY CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0029] As a result, since color light with satisfactory luminous efficiency must be emitted at an emission luminance lower than the rated emission luminance, energy consumption efficiency deteriorates, and the number of light-emitting diodes required to obtain a desired white luminance value increases
In this way, there will inevitably be problems such as increased costs.

Method used

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  • Light source apparatus and display apparatus
  • Light source apparatus and display apparatus
  • Light source apparatus and display apparatus

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Embodiment Construction

[0071] The present invention will be described in detail with reference to the accompanying drawings.

[0072] image 3 is a plan view showing main parts of the light source device according to the first embodiment of the present invention.

[0073] Such as image 3 As shown, the light source device according to the present invention includes light-emitting diodes emitting light of three colors, that is, a red light-emitting diode R, a green light-emitting diode G and a blue light-emitting diode B constitute a set of light-emitting diode units 1 .

[0074] In addition, when driving light-emitting diodes of various colors with high luminous efficiency, in order to obtain ideal white chromaticity, the chip area of ​​the light-emitting diode used to emit color light with insufficient brightness is selected, that is, the chip area of ​​the green light-emitting diode G is larger than Chip area for light-emitting diodes R and B emitting other colors, ie red and blue.

[0075] Acc...

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PUM

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Abstract

A light source device, comprising light emitting devices for emitting light of at least more than two colors, and a light emitting device group composed of light emitting devices arranged close to each other, wherein each light emitting device group includes a plurality of light emitting devices for emitting Light-emitting devices for at least more than one color of light of two colors, the plurality of light-emitting devices are arranged such that the central positions of the light-emitting devices for emitting the respective colors substantially match each other.

Description

technical field [0001] The present invention relates to a light source device including a light-emitting device such as a light-emitting diode as its light source, and more particularly to a light source device suitable for an illumination source that uniformly scatters and excites R (red), G (green) ), B (blue) light-emitting diodes in three colors to obtain a white surface light source. The present invention also relates to a display device comprising a light source device for illuminating a display portion from behind. Background technique [0002] As an application of light-emitting diodes (LEDs), it is well known that white LEDs can emit white light by combining a plurality of light-emitting diodes with three colors of R (red), G (green), and B (blue) or light-emitting diodes of other colors. diodes (white LEDs) to emit white light. [0003] As light-emitting diodes have become more influential in recent years, the application of this white LED light source has become...

Claims

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Application Information

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IPC IPC(8): G09F9/30G01B17/00H01L33/00H01L33/48
CPCG02F1/133603G02F1/133611F21K9/00G02F1/133609G02F1/1335
Inventor 藤野丰美小野打一泰伊泽久隆太田真之
Owner SONY CORP