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A backlight

A technology of backlight unit and light source, applied in optics, light source, electric light source, etc., can solve the problems of not meeting the color coordinate conditions and not being able to be used for backlighting, etc.

Inactive Publication Date: 2013-06-19
SAMSUNG DISPLAY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Consequently, a considerable portion of manufactured LEDs, which emit light that does not satisfy the color coordinate conditions, cannot be used for backlighting

Method used

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Examples

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Embodiment Construction

[0042] The invention will be described more fully hereinafter with reference to the accompanying drawings that illustrate various embodiments. However, this invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. Like reference numerals refer to like elements throughout.

[0043] It will be understood that when an element or layer is referred to as being "on," "connected to," or "coupled to" another element or layer, it can be directly on, "on," or "coupled to" another element or layer. Connected to" or "coupled to" another element or layer, or intervening elements or layers may be present. In contrast, when an element is referred to as being "directly on," "directly connected to," or "directly coupled to" another element or layer, there...

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Abstract

A back light unit includes a first light source which generates first light in a first wavelength range, a second light source which generates second light in a second wavelength range, and a first wavelength compensating part which adjusts a wavelength of the first light controlling a driving current, which is applied to the first light source.

Description

technical field [0001] Exemplary embodiments of the present invention relate to a backlight unit. More particularly, exemplary embodiments of the present invention relate to a backlight unit compensating for a wavelength of generated light. Background technique [0002] Because the LCD panel of a liquid crystal display ("LCD") device does not generate light itself, the LCD device generally includes a light source for displaying images, which has a predetermined brightness. The LCD device includes a light source such as a backlight. [0003] In conventional LCD devices, cold cathode fluorescent lamps ("CCFL") may be used as the light source for the backlight. In the CCFL, since light is generated by gas discharge, a peak wavelength is fixed, noise wavelengths exist, and color purity is low. [0004] More recently, light emitting diode ("LED") lamps have replaced CCFLs as the light source for backlighting. A backlight using LEDs includes at least two LEDs for light sources...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F21S8/00F21V19/00G02F1/13357F21Y101/02
CPCG02F1/133603H05B45/22G09G3/36G02F1/1333
Inventor 朴英民宋熙光南锡铉
Owner SAMSUNG DISPLAY CO LTD