Light source and control method thereof, backlight module and liquid crystal display device
A technology of backlight module and light source, applied in the fields of light source and its control, backlight module and liquid crystal display device, can solve the problems of human eye visual fatigue, retinal damage, etc., and achieve the effect of uniform light distribution
Active Publication Date: 2017-12-08
BOE TECH GRP CO LTD +1
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Problems solved by technology
[0005] In order to solve the problem that in the existing LED light source, the proportion of blue light is relatively high, it is easy to cause visual fatigue of the human eye, and even cause retinal damage. Embodiments of the present invention provide a light source and its control method, a backlight module and a liquid crystal display device
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[0048] In order to make the objectives, technical solutions and advantages of the present invention clearer, the embodiments of the present invention will be described in further detail below in conjunction with the accompanying drawings.
[0049] Before introducing the present invention in detail, a brief introduction to the sunlight and sunlight spectrum involved in the present invention will be given.
[0050] Daylight, that is, sunlight, the color temperature of daylight is generally 5700K (Kelvin), which can be regarded as warm color light, which can show the truest color of objects, and is not easy to cause visual fatigue of human eyes.
[0051] The light emitted by the sun covers a wide range from electromagnetic waves to ultraviolet rays. The sunlight spectrum involved in the present invention refers to the sunlight spectrum of visible light. The wavelength range of visible light is between 770nm and 350nm (nanometers). In visible light, light with different wavelength ranges...
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The invention discloses a light source and its control method, a backlight module and a liquid crystal display device, belonging to the technical field of liquid crystal display. The light source includes: a plurality of light-emitting chips and a control unit, the light-emitting chips are connected to the control unit; the control unit determines the ratio of the spectral energy of the first visible light to the spectral energy of the standard solar visible light according to the wavelength corresponding to the peak value of the sub-peak of the first visible light, And control the first light-emitting chip to emit light, so that the ratio of the luminous flux of the light emitted by the first light-emitting chip to the luminous flux of the light emitted by a plurality of light-emitting chips is equal to the ratio of the spectral energy of the first visible light to the spectral energy of the standard solar visible light; the present invention provides In the light source, the light distribution of various colors is uniform, which solves the problem that the high proportion of blue light in the LED light source causes visual fatigue of the human eye, and even damages the retina, and achieves the effect of eye protection.
Description
Technical field [0001] The present invention relates to the technical field of liquid crystal display, in particular to a light source and a control method thereof, a backlight module and a liquid crystal display device. Background technique [0002] With the continuous development of liquid crystal display technology, liquid crystal display devices are widely used in the fields of electric power, medical treatment, biochemistry, textiles, food testing, chromatographic analysis, electronic measurement, automotive electronics, and data acquisition. A liquid crystal display device usually includes a display panel and a backlight module. The backlight module includes a light source, and the backlight module can provide a light source for the display panel so that the display panel can display images normally. [0003] In the prior art, the light source is usually a light emitting diode (English: Light Emitting Diode, abbreviated as: LED) light source, and the LED uses a blue chip and ...
Claims
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IPC IPC(8): F21S8/00H05B37/02F21V19/00F21V29/50F21V5/04F21V8/00G02F1/13357H05B44/00
CPCF21S8/00F21V5/04F21V19/00G02F1/133606G02F1/133609H05B47/10G02B6/0068G02B6/0088G02B6/0091G02B6/003G02F1/133603H05B45/20Y02B20/30H05B47/165G02F1/133624G02F1/133607G02F1/133612F21Y2115/10F21V5/008G02B6/0081G02F1/133512G02F1/133514
Inventor 王晨如董学王光泉孙海威陈丽莉董瑞君曾智辉
Owner BOE TECH GRP CO LTD