WO2016169196A1 - 光源装置及其控制方法、背光模组和液晶显示装置 - Google Patents

光源装置及其控制方法、背光模组和液晶显示装置 Download PDF

Info

Publication number
WO2016169196A1
WO2016169196A1 PCT/CN2015/089725 CN2015089725W WO2016169196A1 WO 2016169196 A1 WO2016169196 A1 WO 2016169196A1 CN 2015089725 W CN2015089725 W CN 2015089725W WO 2016169196 A1 WO2016169196 A1 WO 2016169196A1
Authority
WO
WIPO (PCT)
Prior art keywords
light
energy ratio
color
visible light
ratio
Prior art date
Application number
PCT/CN2015/089725
Other languages
English (en)
French (fr)
Inventor
王晨如
董学
王光泉
孙海威
陈丽莉
董瑞君
曾智辉
Original Assignee
京东方科技集团股份有限公司
京东方（河北）移动显示技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 京东方科技集团股份有限公司, 京东方（河北）移动显示技术有限公司 filed Critical 京东方科技集团股份有限公司
Priority to US14/913,100 priority Critical patent/US10021750B2/en
Publication of WO2016169196A1 publication Critical patent/WO2016169196A1/zh

Links

Images

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • G02F1/133603—Direct backlight with LEDs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S8/00—Lighting devices intended for fixed installation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V19/00—Fastening of light sources or lamp holders
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V5/00—Refractors for light sources
    • F21V5/008—Combination of two or more successive refractors along an optical axis
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V5/00—Refractors for light sources
    • F21V5/04—Refractors for light sources of lens shape
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0081—Mechanical or electrical aspects of the light guide and light source in the lighting device peculiar to the adaptation to planar light guides, e.g. concerning packaging
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133509—Filters, e.g. light shielding masks
    • G02F1/133512—Light shielding layers, e.g. black matrix
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133509—Filters, e.g. light shielding masks
    • G02F1/133514—Colour filters
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • G02F1/133609—Direct backlight including means for improving the color mixing, e.g. white
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/20—Controlling the colour of the light
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
    • H05B47/10—Controlling the light source
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
    • G02B6/0023—Means for improving the coupling-in of light from the light source into the light guide provided by one optical element, or plurality thereof, placed between the light guide and the light source, or around the light source
    • G02B6/003—Lens or lenticular sheet or layer
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0066—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form characterised by the light source being coupled to the light guide
    • G02B6/0068—Arrangements of plural sources, e.g. multi-colour light sources
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0081—Mechanical or electrical aspects of the light guide and light source in the lighting device peculiar to the adaptation to planar light guides, e.g. concerning packaging
    • G02B6/0086—Positioning aspects
    • G02B6/0088—Positioning aspects of the light guide or other optical sheets in the package
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0081—Mechanical or electrical aspects of the light guide and light source in the lighting device peculiar to the adaptation to planar light guides, e.g. concerning packaging
    • G02B6/0086—Positioning aspects
    • G02B6/0091—Positioning aspects of the light source relative to the light guide
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
    • G02F1/133607—Direct backlight including a specially adapted diffusing, scattering or light controlling members the light controlling member including light directing or refracting elements, e.g. prisms or lenses
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • G02F1/133612—Electrical details
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133624—Illuminating devices characterised by their spectral emissions
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
    • H05B47/10—Controlling the light source
    • H05B47/165—Controlling the light source following a pre-assigned programmed sequence; Logic control [LC]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
    • Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]

Definitions

  • Embodiments of the present disclosure relate to a light source device and a control method thereof, a backlight module, and a liquid crystal display device.
  • the liquid crystal display device generally 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 displays the image normally.
  • the light source is usually a light emitting diode (English: Light Emitting Diode, referred to as: LED) light source, and the LED uses a blue light chip and a yellow phosphor to mix and emit white light.
  • the blue chip may be an electroluminescent chip, and after the power is applied to the blue chip, the blue chip emits blue light, and the blue light emitted by the blue chip excites yellow light emitted by the yellow phosphor, and the blue light is mixed with the yellow light. After that, white light is formed.
  • An embodiment of the present disclosure provides a control method of a light source device, wherein the light source device includes: a plurality of light emitting chips, the plurality of light emitting chips including a first light emitting chip capable of emitting visible light of a first color, the method comprising: Simultaneously emitting the plurality of light-emitting chips to obtain a working visible light spectrum; obtaining a first energy ratio of the first color visible light in the working visible spectrum; comparing the first energy ratio to the target energy ratio; In a case where the first energy ratio is different from the target energy ratio, the first energy ratio is adjusted to the target energy ratio.
  • the target energy ratio is an energy ratio of the first color visible light in the solar visible spectrum.
  • a current supplied to the first light emitting chip is changed to adjust the first energy ratio to the target energy ratio.
  • a light source device including: a plurality of light emitting chips and a control unit, wherein the plurality of light emitting chips include a first light emitting chip for emitting visible light of a first color, and the control unit is configured to Obtaining a first energy ratio of the first color visible light in the working visible light spectrum obtained when the plurality of light emitting chips emit light simultaneously; comparing the first energy ratio to the target energy ratio; at the first In the case where the energy ratio is different from the target energy ratio, the first energy ratio is adjusted to the target energy ratio.
  • the target energy ratio is an energy ratio of the first color visible light in the solar visible spectrum.
  • control unit is configured to change a current supplied to the first light emitting chip to adjust the first energy ratio to a condition that the first energy ratio is different from the target energy ratio The target energy ratio.
  • Another embodiment of the present disclosure provides a backlight module including the above light source device.
  • the backlight module further includes: a first lens and a second lens disposed on a light exiting side of the plurality of light emitting chips, wherein the first lens is disposed at the second lens and the second lens Between the plurality of light-emitting chips, the first lens is configured to condense light from the plurality of light-emitting chips, and the second lens is configured to convert light condensed via the first lens into parallel light.
  • the backlight module further includes: a light guide plate disposed on a back surface of the light guide plate; or the light source device is disposed at a side of the light guide plate.
  • Another embodiment of the present disclosure provides a liquid crystal display device including: a display panel and the backlight module described above.
  • the display panel includes a frame-shaped array substrate and a color filter substrate, the color film substrate includes a color film layer, and the color film layer includes a black matrix and an open region.
  • FIG. 1 is a schematic structural diagram of a light source according to an embodiment of the present disclosure
  • FIG. 2 is a schematic structural diagram of another light source according to an embodiment of the present disclosure.
  • FIG. 3 is an exploded view of a spectrum of standard solar visible light provided by an embodiment of the present disclosure
  • FIG. 4 is a flowchart of a method for controlling a light source according to an embodiment of the present disclosure
  • FIG. 5 is a flowchart of a method for controlling another light source according to an embodiment of the present disclosure
  • FIG. 6 is a schematic structural diagram of a backlight module according to an embodiment of the present disclosure.
  • FIG. 7 is a schematic diagram of a backlight module according to an embodiment of the present disclosure.
  • FIG. 8 is a schematic structural diagram of another backlight module according to an embodiment of the present disclosure.
  • FIG. 9 is a schematic structural diagram of still another backlight module according to an embodiment of the present disclosure.
  • FIG. 10 is a schematic structural diagram of a liquid crystal display device according to an embodiment of the present disclosure.
  • FIG. 11 is a schematic structural diagram of a display panel according to an embodiment of the present disclosure.
  • the inventors have found that the related art has at least the following problems: when a white light is formed by a blue LED, the proportion of blue light is high, and because the frequency of the blue light is high, the light with a high frequency is likely to cause visual fatigue of the human eye, and even cause the retina. damage.
  • 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 true color of the object, and is not easy to cause visual fatigue of the human eye.
  • the light emitted by the sun ranges from electromagnetic waves to ultraviolet rays, and the coverage is very wide.
  • the daylight spectrum referred to in the embodiments of the present disclosure refers to the daylight spectrum of visible light.
  • the wavelength range of visible light is between 770 and 350 nm (nanometer). In visible light, the light bands of different wavelength ranges give different perceptions to the human eye. When the wavelength range is 770-622 nm, the color perceived by the human eye is Red, when the wavelength range is 622 ⁇ 597nm, the color perceived by the human eye is orange. When the wavelength range is 597 ⁇ 577nm, the color perceived by the human eye is yellow.
  • the human eye feels The color is green, when the wavelength range is 492 ⁇ 455nm, the color perceived by the human eye is blue, when the wavelength range is 455 ⁇ 350nm, the color perceived by the human eye is purple, in the solar spectrum (standard solar visible In the spectrum), the proportions of light of various colors are evenly distributed.
  • FIG. 1 is a schematic structural diagram of a light source 01 according to an embodiment of the present disclosure.
  • the light source 01 includes a plurality of light emitting chips 011 and a control unit 012.
  • Each of the light-emitting chips 011 is connected to the control unit 012.
  • the control unit 012 is configured to obtain, according to the spectrum of the standard solar visible light, a wavelength corresponding to the peak value of the peak of the visible light of each color in the spectrum of the standard solar visible light, according to the wavelength corresponding to the peak value of the peak of the visible light of the first color, in a preset range
  • the ratio of the spectral energy of the first color visible light to the spectral energy of the standard solar visible light is determined, and the first light emitting chip is controlled to emit light according to the ratio of the spectral energy of the visible light of the first color to the spectral energy of the standard solar visible light, so that the first light emitting chip emits
  • the ratio of the luminous flux of the light to the luminous flux of the light emitted by the plurality of light-emitting chips is equal to the ratio of the spectral energy of the first color visible light to the spectral energy of the standard solar visible light.
  • the first color visible light is visible light of any one of the standard solar visible light spectrum
  • the first light emitting chip is a light emitting chip capable of emitting visible light of the first color
  • the wavelength of the light emitted by the plurality of light emitting chips is located in the standard solar visible light. Within the wavelength range.
  • 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 the plurality of light emitting chips that is, the light of the light emitted by the first light emitting chip
  • the ratio of energy to the light energy of the light emitted by the plurality of light-emitting chips is the ratio of energy to the light energy of the light emitted by the plurality of light-emitting chips.
  • the light source device controls the first light emitting chip to emit light according to the ratio of the spectral energy of the first color visible light in the spectrum of the standard solar visible light to the spectral energy of the standard solar visible light, so that the first The ratio of the luminous flux of the light emitted by the light emitting chip to the luminous flux of the light emitted by the plurality of light emitting chips is equal to the ratio of the spectral energy of the first color visible light to the spectral energy of the standard solar visible light, due to the luminous flux of the light emitted by the first light emitting chip and the plurality of The ratio of the light flux of the light emitted by the light-emitting chip is the ratio of the light energy of the light emitted by the first light-emitting chip to the light energy of the light emitted by the plurality of light-emitting chips.
  • the light source device provided by the embodiment of the present disclosure, various colors are used.
  • the uniform distribution of light solves the problem that the proportion of blue light in the LED light source is high, causing visual fatigue of the human eye and even damage of the retina, and achieving the effect of eye protection.
  • FIG. 2 is a schematic structural diagram of another light source 01 according to an embodiment of the present disclosure.
  • the light source 01 includes a plurality of light emitting chips 011, a control unit 012, and a heat dissipation bracket 013.
  • a plurality of light emitting chips 011 are uniformly disposed on the heat dissipation bracket 013, and each of the light emitting chips 011 is connected to the control unit 012.
  • the light emitting chip 011 can be an electroluminescent chip or a field emission
  • the embodiment of the present disclosure is described by taking the light-emitting chip 011 as an electroluminescent chip as an example.
  • the control unit 012 can be directly connected to each of the light-emitting chips 011 through wires, or can be connected to each of the light-emitting chips 011 through the heat-dissipating bracket 013. For example, as shown in FIG.
  • control unit 012 is respectively connected to each of the light emitting chips 011 through the heat dissipation bracket 013.
  • the control unit 012 is connected to the heat dissipation bracket 013, and the light emitting chip 011 is disposed in the heat dissipation.
  • the control unit 012 is connected to the light emitting chip 011.
  • the number of the light-emitting chips 011 may be set according to actual needs.
  • the number of the light-emitting chips 011 may be 6, that is, each of the light-emitting chips 011 corresponds to visible light of one color in the spectrum of the standard solar visible light.
  • the number of the light-emitting chips 011 may be greater than 6.
  • the visible light of one color in the spectrum of the standard solar visible light may correspond to the plurality of light-emitting chips 011.
  • the embodiment of the present disclosure uses the light-emitting chip 011.
  • the number of the numbers is 6 for illustration.
  • the spectrum of standard solar visible light can be the D65 solar spectrum.
  • the control unit 012 is configured to obtain, according to the spectrum of the standard solar visible light, a wavelength corresponding to the peak value of the peak of the visible light of each color in the spectrum of the standard solar visible light, according to the wavelength corresponding to the peak value of the peak of the visible light of the first color, in a preset range
  • the ratio of the spectral energy of the first color visible light to the spectral energy of the standard solar visible light is determined, and the first light emitting chip is controlled to emit light according to the ratio of the spectral energy of the visible light of the first color to the spectral energy of the standard solar visible light, so that the first light emitting chip emits
  • the ratio of the luminous flux of the light to the luminous flux of the light emitted by the plurality of light-emitting chips is equal to the ratio of the spectral energy of the first color visible light to the spectral energy of the standard solar visible light.
  • the visible light of the first color is visible light of any one of the spectra of the standard solar visible light
  • the first light emitting chip is a light emitting chip capable of emitting visible light of the first color
  • the wavelength of the light emitted by the plurality of light emitting chips is located in the standard sun. Within the wavelength range of visible light.
  • FIG. 3 which shows an exploded view of the spectrum of standard solar visible light
  • FIG. 3 shows an exploded view of the spectrum of standard solar visible light
  • the color of visible light appears as: red, Orange, yellow, green, blue enamel, purple.
  • the control unit 012 samples the spectrum of the standard solar visible light, and obtains peak sampling points of n partial peaks.
  • the peak sampling point of each partial peak corresponds to one wavelength, and the wavelength may be referred to as the dominant wavelength of the split peak.
  • the control unit 012 can obtain 6 dominant wavelengths.
  • the visible light of each color corresponds to one dominant wavelength, wherein the dominant wavelength of red light is a1, the dominant wavelength of orange light is a2, and the dominant wavelength of yellow light is a3.
  • the dominant wavelength of green light is a4, the dominant wavelength of blue-blue light is a5, and the dominant wavelength of purple light is a6.
  • n can also take a value greater than 6, in which case there may be multiple peaks in the visible light of each color.
  • the control unit 012 determines a ratio of the spectral energy of the first color visible light to the spectral energy of the standard solar visible light within a preset range, wherein the first color visible light is any one of the standard solar visible light spectra.
  • the preset range is a range in which the main wavelength of the visible light of the first color is centered, and m is left and right. For example, as shown in FIG. 3, if the visible light of the first color is red light, the preset range may be [a1-m, a1
  • the specific value of m is set according to the actual situation. The embodiment of the present disclosure does not limit this.
  • m may be 0.5.
  • the spectral energy of the visible light of the first color in the preset range may be: the area of the spectrum within the preset range, as shown in FIG. 3, assuming the area of the shadow portion A in the range of [a1-m, a1+m]
  • S1 is the spectral energy of visible light of the first color.
  • the ratio of the spectral energy of the first color visible light to the spectral energy of the standard solar visible light is S1/S.
  • the control unit 012 controls the first light emitting chip to emit light according to the ratio of the spectral energy of the visible light of the first color to the spectral energy of the standard solar visible light.
  • the first light emitting chip is a chip capable of emitting red light.
  • the control unit 012 is based on the spectral energy of the visible light of the first color and the spectral energy of the standard visible light of the sun.
  • the ratio of controlling the first light emitting chip to emit light may include:
  • the control unit 012 searches for a light-emitting chip corresponding to the dominant wavelength of the visible light of the first color according to the dominant wavelength of the visible light of the first color, and the light-emitting chip is the first light-emitting chip.
  • the control unit 012 can maintain the correspondence between the dominant wavelength and the light-emitting chip, wherein each of the light-emitting chips can be a chip capable of emitting light of a wavelength of a wavelength band to which the dominant wavelength belongs, for example, the first light-emitting chip can emit A chip having light of a band color of a dominant wavelength a1, referring to FIG. 3, the first light-emitting chip is a chip capable of emitting red light.
  • the control unit 012 can search for the corresponding relationship between the dominant wavelength and the light-emitting chip according to the dominant wavelength of the visible light of the first color, and obtain a light-emitting chip corresponding to the dominant wavelength of the visible light of the first color.
  • the control unit 012 After the control unit 012 finds the first light-emitting chip, the control unit 012 applies a current of a preset intensity to the first light-emitting chip to cause the first light-emitting chip to emit light, wherein the current of the preset intensity A current for which 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 the plurality of light-emitting chips is equal to the ratio of the spectral energy of the first color visible light to the spectral energy of the standard solar visible light.
  • the preset intensity current is determined experimentally in advance.
  • the number of the light emitting chips is 6.
  • the process of determining the current of the preset intensity may include:
  • the control unit 012 applies a current i1 to each of the light-emitting chips, and each of the light-emitting chips emits light. Assuming that the light flux p1 of the light emitted by the first light-emitting chip and the total light emitted by the six light-emitting chips are p, the first light is emitted. The ratio of the luminous flux of the light emitted by the chip to the luminous flux of the light emitted by the six light emitting chips is p1/p.
  • the current of the preset intensity corresponding to the other light-emitting chips can be obtained.
  • the wavelength of the light emitted by the plurality of light emitting chips is in the wavelength range of the standard solar visible light, that is, the wavelength of the light emitted by the plurality of light emitting chips ranges from 770 to 350 nm. between.
  • 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 the plurality of light emitting chips that is, the light of the light emitted by the first light emitting chip
  • the ratio of energy to the light energy of the light emitted by the plurality of light-emitting chips is the ratio of energy to the light energy of the light emitted by the plurality of light-emitting chips.
  • the light source device controls the first light emitting chip to emit light according to the ratio of the spectral energy of the first color visible light in the spectrum of the standard solar visible light to the spectral energy of the standard solar visible light, so that the first The ratio of the luminous flux of the light emitted by the light emitting chip to the luminous flux of the light emitted by the plurality of light emitting chips is equal to the ratio of the spectral energy of the first color visible light to the spectral energy of the standard solar visible light, due to the luminous flux of the light emitted by the first light emitting chip and the plurality of The ratio of the light flux of the light emitted by the light-emitting chip is the ratio of the light energy of the light emitted by the first light-emitting chip to the light energy of the light emitted by the plurality of light-emitting chips.
  • the light source device provided by the embodiment of the present disclosure, various colors are used.
  • the uniform distribution of light solves the problem that the proportion of blue light in the LED light source is high, causing visual fatigue of the human eye and even damage of the retina, and achieving the effect of eye protection.
  • the light source device provided by the embodiment of the present disclosure can operate using the following control method.
  • the control method of the light source device in the embodiment of the present disclosure can be referred to the description in the following embodiments.
  • FIG. 4 illustrates a method for controlling a light source according to an embodiment of the present disclosure.
  • the flow chart may be a light source as shown in FIG. 1 or FIG. 2, the light source includes: a plurality of light emitting chips and a control unit, each of the light emitting chips being connected to the control unit.
  • the method flow includes, for example:
  • Step 401 The control unit obtains a wavelength corresponding to a peak value of a peak of the visible light of each color according to a spectrum of the standard visible light of the sun.
  • Step 402 The control unit determines a ratio of a spectral energy of the first color visible light to a spectral energy of the standard solar visible light in a preset range according to a wavelength corresponding to a peak value of the peak of the visible light of the first color.
  • the visible light of the first color is visible light of any one of the spectra of the standard solar visible light.
  • Step 403 The control unit controls the first light emitting chip to emit light according to a ratio of the spectral energy of the visible light of the first color to the spectral energy of the standard visible light of the sun, such that the luminous flux of the light emitted by the first light emitting chip and the light flux of the light emitted by the plurality of light emitting chips The ratio is equal to the ratio of the spectral energy of the first color visible light to the spectral energy of the standard solar visible light.
  • the first light-emitting chip is a light-emitting chip capable of emitting visible light of a first color, and the wavelength of light emitted by the plurality of light-emitting chips is in a wavelength range of standard solar visible light.
  • the first light emitting chip is an electroluminescent chip.
  • Step 403 may include the control unit applying a current of a preset intensity to the first light emitting chip according to a ratio of a spectral energy of the first color visible light to a spectral energy of the standard solar visible light.
  • the current of the preset intensity is a current that makes the ratio of the spectral energy of the light emitted by the first light emitting chip to the light flux of the light emitted by the plurality of light emitting chips equal to the ratio of the spectral energy of the first color visible light to the spectral energy of the standard solar visible light. .
  • control method of the light source device controls the first light emitting chip to emit light according to the ratio of the spectral energy of the visible light of the first color in the spectrum of the standard solar visible light to the spectral energy of the standard visible light of the sun.
  • the ratio of the luminous flux of the light emitted by the first light-emitting chip to the light flux of the light emitted by the plurality of light-emitting chips is equal to the ratio of the spectral energy of the first color visible light to the spectral energy of the standard solar visible light, due to the luminous flux of the light emitted by the first light-emitting chip
  • the ratio of the light flux of the light emitted by the plurality of light-emitting chips is the ratio of the light energy of the light emitted by the first light-emitting chip to the light energy of the light emitted by the plurality of light-emitting chips.
  • the light distribution of various colors is uniform, which solves the high proportion of blue light in the LED light source, resulting in The visual fatigue of the human eye, and even the problem of retinal damage, achieves the effect of eye protection.
  • FIG. 5 is a flowchart of a method for controlling another light source according to an embodiment of the present disclosure, where the light source may be the light source shown in FIG. 1 or FIG. 2 , and the light source includes: multiple light emitting chips. And the control unit, the light source may further include: a heat dissipation bracket, the plurality of light emitting chips are evenly disposed on the heat dissipation bracket, and each of the light emitting chips is connected to the control unit.
  • the light emitting chip is an electroluminescent chip as an example for description.
  • the method flow includes, for example:
  • Step 501 The control unit obtains a wavelength corresponding to a peak value of a split peak of visible light of each color according to a spectrum of standard solar visible light.
  • the control unit samples the spectrum of the standard solar visible light, and obtains peak sampling points of n partial peaks, and the peak sampling point of each partial peak corresponds to one wavelength, and the wavelength may be referred to as The dominant wavelength of the partial peak, in the embodiment of the present disclosure, assuming that n is 6, the control unit can obtain 6 dominant wavelengths.
  • the visible light of each color corresponds to one dominant wavelength, wherein the dominant wavelength of red light is a1, the dominant wavelength of orange light is a2, the dominant wavelength of yellow light is a3, and the dominant wavelength of green light
  • the dominant wavelength of blue-blue light is a5, and the dominant wavelength of purple light is a6.
  • n can also take a value greater than 6, in which case there may be multiple peaks in the visible light of each color.
  • Step 502 The control unit determines a ratio of a spectral energy of the visible light of the first color to a spectral energy of the standard solar visible light according to a wavelength corresponding to a peak of the peak of the visible light of the first color.
  • the control unit determines the ratio of the spectral energy of the first color visible light to the spectral energy of the standard solar visible light in a preset range according to the wavelength corresponding to the peak value of the peak of the visible light of the first color, wherein
  • the first color visible light is visible light of any one of the spectra of the standard solar visible light.
  • the preset range is a range in which the main wavelength of the visible light of the first color is centered, and m is left and right. For example, as shown in FIG. 3, if the visible light of the first color is red light, the preset range may be [a1-m, a1 The specific value of m is set according to the actual situation. The embodiment of the present disclosure does not limit this. For example, m may be 0.5.
  • the spectral energy of the visible light of the first color in the preset range may be: the area of the spectrum within the preset range, as shown in FIG. 3, assuming the area of the shadow portion A in the range of [a1-m, a1+m]
  • S1 is the spectral energy of visible light of the first color.
  • the spectral energy of the visible light of the first color is visible to the standard sun.
  • the ratio of the spectral energy of light is S1/S.
  • the ratio S1/S is a target energy ratio, which may represent an energy ratio of the first color visible light in the standard solar visible light spectrum.
  • Step 503 The control unit applies a preset intensity current to the first light emitting chip according to a ratio of the spectral energy of the first color visible light to the spectral energy of the standard solar visible light, so that the light flux of the light emitted by the first light emitting chip and the plurality of light emitting chips
  • the ratio of the luminous flux of the emitted light is equal to the ratio of the spectral energy of the first color visible light to the spectral energy of the standard solar visible light.
  • the first light-emitting chip is a light-emitting chip capable of emitting visible light of a first color, and the wavelength of light emitted by the plurality of light-emitting chips is in a wavelength range of standard solar visible light.
  • the control unit searches for a light-emitting chip corresponding to the dominant wavelength of the visible light of the first color according to the dominant wavelength of the visible light of the first color, and the light-emitting chip is the first light-emitting chip.
  • the control unit may maintain a correspondence between the dominant wavelength and the light emitting chip, wherein each of the light emitting chips may be a chip capable of emitting light of a wavelength of a wavelength band to which the dominant wavelength belongs, for example, the first light emitting chip is capable of emitting the main A chip having light of a wavelength band of a wavelength a1, referring to FIG. 3, the first light-emitting chip is a chip capable of emitting red light.
  • the control unit may search for a corresponding relationship between the dominant wavelength and the light emitting chip according to the dominant wavelength of the visible light of the first color, and obtain a light emitting chip corresponding to the dominant wavelength of the visible light of the first color.
  • the control unit After the control unit finds the first light-emitting chip, the control unit applies a current of a preset intensity to the first light-emitting chip to cause the first light-emitting chip to emit light, wherein the current of the preset intensity is caused by the first light-emitting chip.
  • the ratio of the luminous flux of the light to the luminous flux of the light emitted by the plurality of light-emitting chips is equal to the current of the ratio of the spectral energy of the first color visible light to the spectral energy of the standard solar visible light.
  • the process of determining the current of the preset intensity may include:
  • the control unit 012 applies a current i1 to each of the light-emitting chips, and each of the light-emitting chips emits light. Assuming that the light flux p1 of the light emitted by the first light-emitting chip and the total light emitted by the six light-emitting chips are p, the first light is emitted. The ratio of the luminous flux of the light emitted by the chip to the luminous flux of the light emitted by the six light emitting chips is p1/p.
  • the current of the preset intensity corresponding to the other light-emitting chips can be obtained.
  • the wavelength of the light emitted by the plurality of light emitting chips is in the wavelength range of the standard solar visible light, that is, the wavelength of the light emitted by the plurality of light emitting chips.
  • the range is between 770 and 350 nm.
  • 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 the plurality of light emitting chips that is, the light of the light emitted by the first light emitting chip
  • the ratio of energy to the light energy of the light emitted by the plurality of light-emitting chips is the ratio of energy to the light energy of the light emitted by the plurality of light-emitting chips.
  • control method of the light source device controls the first light emitting chip to emit light according to the ratio of the spectral energy of the visible light of the first color in the spectrum of the standard solar visible light to the spectral energy of the standard visible light of the sun.
  • the ratio of the luminous flux of the light emitted by the first light-emitting chip to the light flux of the light emitted by the plurality of light-emitting chips is equal to the ratio of the spectral energy of the first color visible light to the spectral energy of the standard solar visible light, due to the luminous flux of the light emitted by the first light-emitting chip
  • the ratio of the light flux of the light emitted by the plurality of light-emitting chips is the ratio of the light energy of the light emitted by the first light-emitting chip to the light energy of the light emitted by the plurality of light-emitting chips.
  • the light distribution of various colors is uniform, which solves the problem that the proportion of blue light in the LED light source is high, causing visual fatigue of the human eye and even damage of the retina, and achieving the effect of eye protection.
  • An embodiment of the present disclosure provides a method of controlling a light source device, wherein the light source device 01 includes: a plurality of light emitting chips 011, the plurality of light emitting chips including a first light emitting chip 011 capable of emitting visible light of a first color,
  • the method includes: simultaneously emitting the plurality of light emitting chips 011 to obtain a working visible light spectrum; obtaining a first energy ratio of the first color visible light in the working visible spectrum; comparing the first energy ratio with a target energy ratio S1/S; in a case where the first energy ratio is different from the target energy ratio S1/S, the first energy ratio is adjusted to the target energy ratio.
  • the working visible light spectrum obtained by simultaneously emitting the plurality of light-emitting chips 011 to light can be obtained by a spectrometer disposed on the light-emitting path of the light source device.
  • a first energy ratio of the first color visible light in the working visible spectrum can be obtained by a method similar to obtaining the above target energy ratio S1/S.
  • the current supplied to the first light emitting chip is changed to adjust the first energy ratio to the target energy ratio.
  • FIG. 6 is a schematic structural diagram of a backlight module 02 according to an embodiment of the present disclosure.
  • the backlight module 02 includes the light source 01 illustrated in FIG. 2 .
  • the control unit in the light source 01 is not shown in FIG.
  • the backlight module 02 further includes a focusing lens 021.
  • Focusing lens 021 is disposed on a side of the heat dissipation bracket 013 of the light source 01 where the light emitting chip 011 is disposed.
  • the focusing lens 021 can focus the light emitted by the light source 01, improve the incident ability of the light, and enable the light of each color to be evenly distributed.
  • the backlight module 02 further includes: a collimating lens 022.
  • the collimator lens 022 is disposed on the side of the focus lens 021 away from the light source 01.
  • the arrangement of the focus lens 021 can make the light transmitted through the collimator lens 022 parallel, and improve the collimation of the light transmitted through the collimator lens 022.
  • the light rays of the light provided by the backlight module 02 are parallel to form a surface light source.
  • the light source 01, the focus lens 021, and the collimating lens 022 may be packaged together by the housing 023.
  • FIG. 7 shows a schematic diagram of the backlight module 02.
  • the light emitted by the light source 01 first enters the focusing lens 021, and the focusing lens 021 converges the light to converge a light at a point O, which may be referred to as the focus of the focusing lens 021;
  • the light passing through the focus O is incident on the collimating lens 022, and the collimating lens 022 can improve the collimation of the light transmitted through the collimating lens 022.
  • the rays passing through the collimating lens 022 are parallel, and the light is vertical. On the exit surface of the collimating lens 022.
  • the light source 01 may be a side-in type light source or a direct-type light source, wherein the side-in type light source is disposed on a side of the light guide plate, and the direct-type light source is disposed on a backlight surface of the light guide plate.
  • the backlight module 02 further includes: a light guide plate 024.
  • the light source 01 may be disposed on the backlight surface of the light guide plate 024; or the light source 01 may be disposed on the side of the light guide plate 024.
  • the backlight module 02 is as shown in FIG. 8.
  • the focus lens 021 and the collimator lens 022 are disposed on the side of the light guide plate 024 together with the light source 01.
  • 02 can be referred to as a side-entry backlight module.
  • the backlight module 02 is as shown in FIG. 9.
  • the focus lens 021 and the collimator lens 022 are disposed together with the light source 01.
  • the backlight module of the light guide plate 024 can be referred to as a direct type backlight module.
  • the backlight module controls the first light emitting chip to emit light according to the ratio of the spectral energy of the visible light of the first color in the spectrum of the standard solar visible light to the spectral energy of the standard visible light of the sun.
  • the ratio of the luminous flux of the light emitted by a light-emitting chip to the light flux of the light emitted by the plurality of light-emitting chips is equal to the ratio of the spectral energy of the visible light of the first color to the spectral energy of the visible light of the standard sun, due to the luminous flux of the light emitted by the first light-emitting chip.
  • the ratio of the luminous flux of the emitted light is the ratio of the light energy of the light emitted by the first light-emitting chip to the light energy of the light emitted by the plurality of light-emitting chips. Therefore, in the light source device provided by the embodiment of the present disclosure, light of various colors Uniform distribution, solves the high proportion of blue light in the LED light source, causing visual fatigue of the human eye, and even the problem of retinal damage, achieving the effect of eye protection.
  • FIG. 10 is a schematic structural diagram of a liquid crystal display device 03 according to an embodiment of the present disclosure.
  • the liquid crystal display device 03 includes a display panel 031 and a backlight module 02 .
  • 02 can be a backlight module as shown in any of FIG. 6, FIG. 8, or FIG.
  • FIG. 11 is a schematic structural view of the display panel 031.
  • the display panel 031 includes: an array substrate 0311 and a color filter substrate 0312 formed on the box, and the color filter substrate 0312 includes a color film layer 03121.
  • the film layer 03121 includes a black matrix M and an opening region N, and the opening region N is a portion through which the wiring portion of each color pixel and the transistor portion (usually hidden by a black matrix) pass.
  • the display panel 031 may further include: a liquid crystal 0313 filled between the array substrate 0311 and the color filter substrate 0312.
  • the spacer substrate 0314 is further disposed between the array substrate 0311 and the color filter substrate 0312, and the spacers 0314 are in contact with the array substrate 0311 and the color filter substrate 0312, respectively, for supporting the array substrate 0311 and the color filter substrate 0312, so that the array A space is formed between the substrate 0311 and the color filter substrate 0312, and the liquid crystal 0313 is located in the space.
  • the liquid crystal display device controls the first light emitting chip to emit light according to the ratio of the spectral energy of the visible light of the first color in the spectrum of the standard solar visible light to the spectral energy of the standard visible light of the sun.
  • the ratio of the luminous flux of the light emitted by a light-emitting chip to the light flux of the light emitted by the plurality of light-emitting chips is equal to the ratio of the spectral energy of the visible light of the first color to the spectral energy of the visible light of the standard sun, due to the luminous flux of the light emitted by the first light-emitting chip.
  • the ratio of the luminous flux of the light emitted by the light-emitting chip that is, the ratio of the light energy of the light emitted by the first light-emitting chip to the light energy of the light emitted by the plurality of light-emitting chips, is therefore various in the light source device provided by the embodiments of the present disclosure.
  • the uniform distribution of color light solves the problem that the proportion of blue light in the LED light source is high, causing visual fatigue of the human eye and even damage of the retina, and achieving the effect of eye protection.
  • the related black-and-white display device is manufactured by electrophoresis principle, usually without light source.
  • the black-and-white display device encapsulates black particles with negative charge and white particles with positive charge, and black particles and white particles are ordered by changing the charge.
  • the related black and white display device is difficult to achieve high resolution of the screen;
  • the color film substrate of the display panel includes a black matrix and an opening region, the display panel is a black-and-white display panel, and a high-resolution image can be realized by using a light source of a daylight spectrum.
  • the liquid crystal display device provided by the embodiment of the present disclosure has the characteristics of anti-fatigue and healthy eye protection, and is easy to realize high-resolution display, and is particularly suitable for a children's electronic reading display or an anti-fatigue eye-protecting e-book.
  • a person skilled in the art may understand that all or part of the steps of implementing the above embodiments may be completed by hardware, or may be instructed by a program to execute related hardware, and the program may be stored in a computer readable storage medium.
  • the storage medium mentioned may be a read only memory, a magnetic disk or an optical disk or the like.

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Led Device Packages (AREA)
  • Circuit Arrangement For Electric Light Sources In General (AREA)

Abstract

一种光源装置(01)及其控制方法、背光模组和液晶显示装置。所述光源装置(01)包括多个发光芯片(011)，所述多个发光芯片(011)包括能够发出第一颜色可见光的第一发光芯片，所述光源装置(01)的控制方法包括：使所述多个发光芯片(011)同时发光以得到一工作可见光光谱；获得在所述工作可见光谱中所述第一颜色可见光所占的第一能量比值；比较所述第一能量比值与目标能量比值；在所述第一能量比值不同于所述目标能量比值的情况下，将所述第一能量比值调节为所述目标能量比值。这样，可以解决了LED光源中蓝色光的比例高的问题，从而实现护眼效果。

Description

光源装置及其控制方法、背光模组和液晶显示装置 技术领域
本公开实施例涉及一种光源装置及其控制方法、背光模组和液晶显示装置。
背景技术
随着液晶显示技术的不断发展，液晶显示装置广泛应用于电力、医疗、生化、纺织、食品检测、色谱分析、电子测量、汽车电子和数据采集等领域。液晶显示装置通常包括：显示面板和背光模组，其中，背光模组包括光源，背光模组能够为显示面板提供光源，使得显示面板正常显示影像。
相关技术中，光源通常为发光二极管(英文：Light Emitting Diode，简称：LED)光源，LED采用蓝光芯片配合黄色荧光粉，混合发出白光。示例地，蓝光芯片可以为电致发光芯片，在该蓝光芯片上加电后可以使得该蓝光芯片发出蓝色光，蓝光芯片发出的蓝色光激发黄色荧光粉发出的黄色光，蓝色光与黄色光混合后，形成白光。
发明内容
本公开实施例提供一种光源装置的控制方法，其中，所述光源装置包括：多个发光芯片，所述多个发光芯片包括能够发出第一颜色可见光的第一发光芯片，所述方法包括：使所述多个发光芯片同时发光以得到一工作可见光光谱；获得在所述工作可见光谱中所述第一颜色可见光所占的第一能量比值；比较所述第一能量比值与目标能量比值；在所述第一能量比值不同于所述目标能量比值的情况下，将所述第一能量比值调节为所述目标能量比值。
在一个示例中，所述目标能量比值为所述第一颜色可见光在太阳可见光光谱中所占的能量比值。
在一个示例中，在所述第一能量比值不同于所述目标能量比值的情况下，改变提供到所述第一发光芯片的电流以将所述第一能量比值调节为所述目标能量比值。
本公开另一实施例提供一种光源装置，包括：多个发光芯片和控制单元，其中，所述多个发光芯片包括用于发出第一颜色可见光的第一发光芯片，所述控制单元构造为获得在所述多个发光芯片同时发光的情况下得到的工作可见光光谱中所述第一颜色可见光所占的第一能量比值；比较所述第一能量比值与目标能量比值；在所述第一能量比值不同于所述目标能量比值的情况下，将所述第一能量比值调节为所述目标能量比值。
在一个示例中，所述目标能量比值为所述第一颜色可见光在太阳可见光光谱中所占的能量比值。
在一个示例中，所述控制单元构造为在所述第一能量比值不同于所述目标能量比值的情况下，改变提供到所述第一发光芯片的电流以将所述第一能量比值调节为所述目标能量比值。
本公开又一实施例提供一种背光模组，包括上述的光源装置。
在一个示例中，所述背光模组还包括：设置在所述多个发光芯片的出光侧的第一透镜和第二透镜，其中，所述第一透镜设置在所述第二透镜与所述多个发光芯片之间，第一透镜构造为会聚来自所述多个发光芯片的光线，所述第二透镜构造为将经由所述第一透镜会聚的光线变成平行光线。
在一个示例中，所述背光模组还包括：导光板，所述光源装置设置在所述导光板的背面；或者，所述光源装置设置在所述导光板的侧面。
本公开又一实施例提供一种液晶显示装置，包括：显示面板和上述的背光模组。
在一个示例中，所述显示面板包括对盒成形的阵列基板和彩膜基板，所述彩膜基板包括彩膜层，所述彩膜层包括黑矩阵及开口区域。
附图说明
为了更清楚地说明本公开实施例的技术方案，下面将对实施例或相关技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅涉及本公开的一些实施例，并非对本公开的限制。
图1是本公开实施例提供的一种光源的结构示意图；
图2是本公开实施例提供的另一种光源的结构示意图；
图3是本公开实施例提供的一种标准太阳可见光的光谱的分解图；
图4是本公开实施例提供的一种光源的控制方法的方法流程图；
图5是本公开实施例提供的另一种光源的控制方法的方法流程图；
图6是本公开实施例提供的一种背光模组的结构示意图；
图7本公开实施例提供的背光模组的原理图；
图8本公开实施例提供的另一种背光模组的结构示意图；
图9本公开实施例提供的再一种背光模组的结构示意图；
图10本公开实施例提供的一种液晶显示装置的结构示意图；
图11本公开实施例提供的一种显示面板的结构示意图。
具体实施方式
下面将结合附图，对本公开实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本公开一部分实施例，而不是全部的实施例。基于本公开中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本公开保护的范围。
发明人发现相关技术至少存在以下问题：在采用蓝光LED形成白光时，蓝色光的比例较高，而由于蓝色光的频率较高，频率较高的光线容易造成人眼的视觉疲劳，甚至导致视网膜损伤。
在对本公开实施例做详细介绍之前，先对本公开实施例中涉及到的日光以及日光光谱作简单介绍。
日光，即太阳光，日光的色温一般为5700K(开尔文)，其可以视为暖色光，能够显现物体最真实的颜色，不易造成人眼的视觉疲劳。
太阳发出的光线从电磁波到紫外线，覆盖范围非常广泛，本公开实施例中涉及到的日光光谱，指的是可见光的日光光谱。可见光的波长范围在770～350nm(纳米)之间，在可见光中，不同波长范围的光带给人眼的颜色感觉不同，其中，当波长范围为770～622nm时，人眼感觉到的颜色为红色，当波长范围为622～597nm时，人眼感觉到的颜色为橙色，当波长范围为597～577nm时，人眼感觉到的颜色为黄色，当波长范围为577～492nm时，人眼感觉到的颜色为绿色，当波长范围为492～455nm时，人眼感觉到的颜色为蓝靛色，当波长范围为455～350nm时，人眼感觉到的颜色为紫色，在日光光谱(标准太阳可见光的光谱)中，各种颜色的光的比例分布均匀。
请参考图1，其示出的是本公开实施例提供的一种光源01的结构示意图。参见图1，该光源01包括：多个发光芯片011和控制单元012。
每个发光芯片011都与控制单元012相连。
控制单元012用于根据标准太阳可见光的光谱，得到标准太阳可见光的光谱中各个颜色的可见光的分波峰的峰值对应的波长，根据第一颜色可见光的分波峰的峰值对应的波长，在预设范围内确定第一颜色可见光的光谱能量与标准太阳可见光的光谱能量的比值，根据第一颜色可见光的光谱能量与标准太阳可见光的光谱能量的比值，控制第一发光芯片发光，使得第一发光芯片发出的光的光通量与多个发光芯片发出的光的光通量的比值等于第一颜色可见光的光谱能量与标准太阳可见光的光谱能量的比值。
其中，第一颜色可见光为标准太阳可见光的光谱中的任意一种颜色可见光，第一发光芯片为能够发出第一颜色可见光的发光芯片，多个发光芯片发出的光的波长的范围位于标准太阳可见光的波长范围内。
由于光通量是单位时间内到达、离开或通过曲面的光能量，因此，第一发光芯片发出的光的光通量与多个发光芯片发出的光的光通量的比值也即第一发光芯片发出的光的光能量与多个发光芯片发出的光的光能量的比值。
综上所述，本公开实施例提供的光源装置，通过根据标准太阳可见光的光谱中的第一颜色可见光的光谱能量与标准太阳可见光的光谱能量的比值，控制第一发光芯片发光，使得第一发光芯片发出的光的光通量与多个发光芯片发出的光的光通量的比值等于第一颜色可见光的光谱能量与标准太阳可见光的光谱能量的比值，由于第一发光芯片发出的光的光通量与多个发光芯片发出的光的光通量的比值也即第一发光芯片发出的光的光能量与多个发光芯片发出的光的光能量的比值，因此，本公开实施例提供的光源装置中，各种颜色的光分布均匀，解决了LED光源中蓝色光的比例较高，造成人眼的视觉疲劳，甚至视网膜损伤的问题，达到了护眼的效果。
请参考图2，其示出的是本公开实施例提供的另一种光源01的结构示意图。参见图2，该光源01包括：多个发光芯片011、控制单元012和散热支架013。
多个发光芯片011均匀设置在散热支架013上，且每个发光芯片011都与控制单元012相连。其中，发光芯片011可以为电致发光芯片或者场致发 光芯片等，本公开实施例以发光芯片011为电致发光芯片为例进行说明。控制单元012可以通过电线直接与每个发光芯片011相连，也可以通过散热支架013与每个发光芯片011分别相连。示例地，如图2所示，其示出的是控制单元012通过散热支架013与每个发光芯片011分别相连的情况，例如，控制单元012连接在散热支架013上，发光芯片011设置在散热支架013上，控制单元012与发光芯片011连接。
其中，发光芯片011的个数可以根据实际需要设置，示例地，发光芯片011的个数可以为6，即，每一个发光芯片011对应于标准太阳可见光的光谱中的一种颜色的可见光。或者，发光芯片011的个数还可以大于6，此时，标准太阳可见光的光谱中的一种颜色的可见光可能对应多个发光芯片011，如图2所示，本公开实施例以发光芯片011的个数为6进行举例说明。标准太阳可见光的光谱可以为D65太阳光谱。
控制单元012用于根据标准太阳可见光的光谱，得到标准太阳可见光的光谱中各个颜色的可见光的分波峰的峰值对应的波长，根据第一颜色可见光的分波峰的峰值对应的波长，在预设范围内确定第一颜色可见光的光谱能量与标准太阳可见光的光谱能量的比值，根据第一颜色可见光的光谱能量与标准太阳可见光的光谱能量的比值，控制第一发光芯片发光，使得第一发光芯片发出的光的光通量与多个发光芯片发出的光的光通量的比值等于第一颜色可见光的光谱能量与标准太阳可见光的光谱能量的比值。其中，第一颜色可见光为标准太阳可见光的光谱中的任意一种颜色的可见光，第一发光芯片为能够发出第一颜色可见光的发光芯片，多个发光芯片发出的光的波长的范围位于标准太阳可见光的波长范围内。
例如，如图3所示，其示出的是标准太阳可见光的光谱的分解图，参见图3，在标准太阳可见光的光谱中，随着波长的减小，可见光的颜色依次表现为：红、橙、黄、绿、蓝靛、紫。
控制单元012对标准太阳可见光的光谱进行描点采样，可以得到n个分波峰的峰值采样点，每个分波峰的峰值采样点对应有1个波长，该波长可以称为分波峰的主波长，在本公开实施例中，假设n为6，则控制单元012可以得到6个主波长。如图3所示，每一种颜色的可见光对应有1个主波长，其中，红色光的主波长为a1，橙色光的主波长为a2，黄色光的主波长为a3， 绿色光的主波长为a4，蓝靛色光的主波长为a5，紫色光的主波长为a6。需要说明的是，n还可以取大于6的数值，此时，每一种颜色的可见光可能存在多个峰值。
控制单元012得到n个主波长之后，在预设范围内确定第一颜色可见光的光谱能量与标准太阳可见光的光谱能量的比值，其中，第一颜色可见光为标准太阳可见光的光谱中的任意一种颜色的可见光。预设范围为以第一颜色可见光的主波长为中心，左右浮动m的范围，比如，如图3所示，假设第一颜色可见光为红色光，则预设范围可以为[a1-m，a1+m]，m的具体数值可以根据实际情况设置，本公开实施例对此不做限定，示例地，m可以为0.5。
其中，预设范围内第一颜色可见光的光谱能量与可以为：预设范围内的光谱的面积，如图3所示，假设[a1-m，a1+m]范围内的阴影部分A的面积为S1，则S1即为第一颜色可见光的光谱能量。其中，假设图3所示的标准太阳可见光的光谱的面积为S，则第一颜色可见光的光谱能量与标准太阳可见光的光谱能量的比值为S1/S。
控制单元012得到第一颜色可见光的光谱能量与标准太阳可见光的光谱能量的比值之后，控制单元012根据第一颜色可见光的光谱能量与标准太阳可见光的光谱能量的比值，控制第一发光芯片发光，其中，假设第一颜色可见光例如为红色光，则第一发光芯片为能够发出红色光的芯片，在本公开实施例中，控制单元012根据第一颜色可见光的光谱能量与标准太阳可见光的光谱能量的比值，控制第一发光芯片发光可以包括：
控制单元012根据第一颜色可见光的主波长，查找第一颜色可见光的主波长对应的发光芯片，该发光芯片即为第一发光芯片。示例地，控制单元012可以维护主波长与发光芯片的对应关系，其中，每一个发光芯片可以是能够发出与其对应的主波长所属波段颜色的光的芯片，示例地，第一发光芯片是能够发出主波长a1所属波段颜色的光的芯片，参考图3，第一发光芯片是能够发出红色光的芯片。控制单元012可以根据第一颜色可见光的主波长，查找主波长与发光芯片的对应关系，得到第一颜色可见光的主波长对应的发光芯片。
当控制单元012查找到第一发光芯片后，控制单元012向该第一发光芯片施加预设强度的电流，使该第一发光芯片发光，其中，该预设强度的电流 为使第一发光芯片发出的光的光通量与多个发光芯片发出的光的光通量的比值等于第一颜色可见光的光谱能量与标准太阳可见光的光谱能量的比值的电流。
其中，预设强度的电流是预先通过实验确定的，在本公开实施例中，发光芯片的个数为6，确定预设强度的电流的过程可以包括：
控制单元012向每一个发光芯片施加电流i1，则每一个发光芯片都会发光，假设第一发光芯片发出的光的光通量p1，6个发光芯片发出的总的光的光通量为p，则第一发光芯片发出的光的光通量与6个发光芯片发出的光的光通量的比值为p1/p，若p1/p＝S1/S，则控制单元012确定预设强度的电流为i1，若p1/p不等于S1/S，则控制单元012向每一个发光芯片施加电流i2，继续重复上述过程，直至p1/p＝S1/S，控制单元120得到第一发光芯片对应的预设强度的电流。依次类推，可以得到其他的发光芯片对应的预设强度的电流。
需要说明的是，在本公开实施例中，多个发光芯片发出的光的波长的范围位于标准太阳可见光的波长范围内，也即，多个发光芯片发出的光的波长的范围在770～350nm之间。
由于光通量是单位时间内到达、离开或通过曲面的光能量，因此，第一发光芯片发出的光的光通量与多个发光芯片发出的光的光通量的比值也即第一发光芯片发出的光的光能量与多个发光芯片发出的光的光能量的比值。
综上所述，本公开实施例提供的光源装置，通过根据标准太阳可见光的光谱中的第一颜色可见光的光谱能量与标准太阳可见光的光谱能量的比值，控制第一发光芯片发光，使得第一发光芯片发出的光的光通量与多个发光芯片发出的光的光通量的比值等于第一颜色可见光的光谱能量与标准太阳可见光的光谱能量的比值，由于第一发光芯片发出的光的光通量与多个发光芯片发出的光的光通量的比值也即第一发光芯片发出的光的光能量与多个发光芯片发出的光的光能量的比值，因此，本公开实施例提供的光源装置中，各种颜色的光分布均匀，解决了LED光源中蓝色光的比例较高，造成人眼的视觉疲劳，甚至视网膜损伤的问题，达到了护眼的效果。
本公开实施例提供的光源装置可以采用下文的控制方法工作。本公开实施例中光源装置的控制方法可以参见下文各实施例中的描述。
请参考图4，其示出的是本公开实施例提供的一种光源的控制方法的方 法流程图，其中，光源可以为图1或图2所示的光源，光源包括：多个发光芯片和控制单元，每个发光芯片都与控制单元相连，参见图4，该方法流程例如包括：
步骤401、控制单元根据标准太阳可见光的光谱，得到各个颜色的可见光的分波峰的峰值对应的波长。
步骤402、控制单元根据第一颜色可见光的分波峰的峰值对应的波长，在预设范围内确定第一颜色可见光的光谱能量与标准太阳可见光的光谱能量的比值。
其中，第一颜色可见光为标准太阳可见光的光谱中的任意一种颜色的可见光。
步骤403、控制单元根据第一颜色可见光的光谱能量与标准太阳可见光的光谱能量的比值，控制第一发光芯片发光，使得第一发光芯片发出的光的光通量与多个发光芯片发出的光的光通量的比值等于第一颜色可见光的光谱能量与标准太阳可见光的光谱能量的比值。
其中，第一发光芯片为能够发出第一颜色可见光的发光芯片，多个发光芯片发出的光的波长的范围位于标准太阳可见光的波长范围内。
可选地，第一发光芯片为电致发光芯片。
步骤403可以包括：控制单元根据第一颜色可见光的光谱能量与标准太阳可见光的光谱能量的比值，向第一发光芯片施加预设强度的电流。
其中，预设强度的电流为使第一发光芯片发出的光的光谱能量与多个发光芯片发出的光的光通量的比值等于第一颜色可见光的光谱能量与标准太阳可见光的光谱能量的比值的电流。
综上所述，本公开实施例提供的光源装置的控制方法，通过根据标准太阳可见光的光谱中的第一颜色可见光的光谱能量与标准太阳可见光的光谱能量的比值，控制第一发光芯片发光，使得第一发光芯片发出的光的光通量与多个发光芯片发出的光的光通量的比值等于第一颜色可见光的光谱能量与标准太阳可见光的光谱能量的比值，由于第一发光芯片发出的光的光通量与多个发光芯片发出的光的光通量的比值也即第一发光芯片发出的光的光能量与多个发光芯片发出的光的光能量的比值，因此，本公开实施例提供的光源装置中，各种颜色的光分布均匀，解决了LED光源中蓝色光的比例较高，造成 人眼的视觉疲劳，甚至视网膜损伤的问题，达到了护眼的效果。
请参考图5，其示出的是本公开实施例提供的另一种光源的控制方法的方法流程图，其中，光源可以为图1或图2所示的光源，光源包括：多个发光芯片、和控制单元，光源还可以包括：散热支架，多个发光芯片均匀设置在散热支架上，且每个发光芯片都与控制单元相连。其中，本实施例以发光芯片为电致发光芯片为例进行说明。参见图5，该方法流程例如包括：
步骤501、控制单元根据标准太阳可见光的光谱，得到各个颜色的可见光的分波峰的峰值对应的波长。
例如，如图3所示，控制单元对标准太阳可见光的光谱进行描点采样，可以得到n个分波峰的峰值采样点，每个分波峰的峰值采样点对应有1个波长，该波长可以称为分波峰的主波长，在本公开实施例中，假设n为6，则控制单元可以得到6个主波长。如图3所示，每一种颜色的可见光对应有1个主波长，其中，红色光的主波长为a1，橙色光的主波长为a2，黄色光的主波长为a3，绿色光的主波长为a4，蓝靛色光的主波长为a5，紫色光的主波长为a6。需要说明的是，n还可以取大于6的数值，此时，每一种颜色的可见光可能存在多个峰值。
步骤502、控制单元根据第一颜色可见光的分波峰的峰值对应的波长，在预设范围内确定第一颜色可见光的光谱能量与标准太阳可见光的光谱能量的比值。
控制单元得到n个主波长之后，控制单元根据第一颜色可见光的分波峰的峰值对应的波长，在预设范围内确定第一颜色可见光的光谱能量与标准太阳可见光的光谱能量的比值，其中，第一颜色可见光为标准太阳可见光的光谱中的任意一种颜色的可见光。预设范围为以第一颜色可见光的主波长为中心，左右浮动m的范围，比如，如图3所示，假设第一颜色可见光为红色光，则预设范围可以为[a1-m，a1+m]，m的具体数值可以根据实际情况设置，本公开实施例对此不做限定，示例地，m可以为0.5。
其中，预设范围内第一颜色可见光的光谱能量与可以为：预设范围内的光谱的面积，如图3所示，假设[a1-m，a1+m]范围内的阴影部分A的面积为S1，则S1即为第一颜色可见光的光谱能量。其中，假设图3所示的标准太阳可见光的光谱的面积为S，则第一颜色可见光的光谱能量与标准太阳可见 光的光谱能量的比值为S1/S。所述比值为S1/S为一目标能量比值，其可以表示在所述标准太阳可见光光谱中所述第一颜色可见光所占的能量比值。
步骤503、控制单元根据第一颜色可见光的光谱能量与标准太阳可见光的光谱能量的比值，向第一发光芯片施加预设强度的电流，使得第一发光芯片发出的光的光通量与多个发光芯片发出的光的光通量的比值等于第一颜色可见光的光谱能量与标准太阳可见光的光谱能量的比值。
其中，第一发光芯片为能够发出第一颜色可见光的发光芯片，多个发光芯片发出的光的波长的范围位于标准太阳可见光的波长范围内。
例如，控制单元根据第一颜色可见光的主波长，查找第一颜色可见光的主波长对应的发光芯片，该发光芯片即为第一发光芯片。示例地，控制单元可以维护主波长与发光芯片的对应关系，其中，每一个发光芯片可以是能够发出与其对应的主波长所属波段颜色的光的芯片，示例地，第一发光芯片是能够发出主波长a1所属波段颜色的光的芯片，参考图3，第一发光芯片是能够发出红色光的芯片。控制单元可以根据第一颜色可见光的主波长，查找主波长与发光芯片的对应关系，得到第一颜色可见光的主波长对应的发光芯片。
当控制单元查找到第一发光芯片后，控制单元向该第一发光芯片施加预设强度的电流，使该第一发光芯片发光，其中，该预设强度的电流为使第一发光芯片发出的光的光通量与多个发光芯片发出的光的光通量的比值等于第一颜色可见光的光谱能量与标准太阳可见光的光谱能量的比值的电流。
其中，预设强度的电流是预先通过实验确定的，在本公开实施例中，发光芯片的个数为6，则确定预设强度的电流的过程可以包括：
控制单元012向每一个发光芯片施加电流i1，则每一个发光芯片都会发光，假设第一发光芯片发出的光的光通量p1，6个发光芯片发出的总的光的光通量为p，则第一发光芯片发出的光的光通量与6个发光芯片发出的光的光通量的比值为p1/p，若p1/p＝S1/S，则控制单元012确定预设强度的电流为i1，若p1/p不等于S1/S，则控制单元012向每一个发光芯片施加电流i2，继续重复上述过程，直至p1/p＝S1/S，控制单元120得到第一发光芯片对应的预设强度的电流。依次类推，可以得到其他的发光芯片对应的预设强度的电流。
需要说明的是，在本公开实施例中，多个发光芯片发出的光的波长的范围位于标准太阳可见光的波长范围内，也即，多个发光芯片发出的光的波长 的范围在770～350nm之间。
由于光通量是单位时间内到达、离开或通过曲面的光能量，因此，第一发光芯片发出的光的光通量与多个发光芯片发出的光的光通量的比值也即第一发光芯片发出的光的光能量与多个发光芯片发出的光的光能量的比值。
综上所述，本公开实施例提供的光源装置的控制方法，通过根据标准太阳可见光的光谱中的第一颜色可见光的光谱能量与标准太阳可见光的光谱能量的比值，控制第一发光芯片发光，使得第一发光芯片发出的光的光通量与多个发光芯片发出的光的光通量的比值等于第一颜色可见光的光谱能量与标准太阳可见光的光谱能量的比值，由于第一发光芯片发出的光的光通量与多个发光芯片发出的光的光通量的比值也即第一发光芯片发出的光的光能量与多个发光芯片发出的光的光能量的比值，因此，本公开实施例提供的光源装置中，各种颜色的光分布均匀，解决了LED光源中蓝色光的比例较高，造成人眼的视觉疲劳，甚至视网膜损伤的问题，达到了护眼的效果。
本公开实施例提供一种光源装置的控制方法，其中，所述光源装置01包括：多个发光芯片011，所述多个发光芯片包括能够发出第一颜色可见光的第一发光芯片011，所述方法包括：使所述多个发光芯片011同时发光以得到一工作可见光光谱；获得在所述工作可见光谱中所述第一颜色可见光所占的第一能量比值；比较所述第一能量比值与目标能量比值S1/S；在所述第一能量比值不同于所述目标能量比值S1/S的情况下，将所述第一能量比值调节为所述目标能量比值。
在上述实施例中，使所述多个发光芯片011同时发光以得到的工作可见光光谱可通过设置在所述光源装置的出光路径上的光谱仪获得。对于获得的工作可见光光谱，可以采用与获得上述目标能量比值S1/S类似的方法，得到在所述工作可见光谱中所述第一颜色可见光所占的第一能量比值。
在所述第一能量比值不同于所述目标能量比值的情况下，改变提供到所述第一发光芯片的电流以将所述第一能量比值调节为所述目标能量比值。
请参考图6，其示出的是本公开实施例提供的一种背光模组02的结构示意图，参见图6，该背光模组02包括：图2所示的光源01。其中，图6中未示出光源01中的控制单元。
进一步地，参见图6，该背光模组02还包括：聚焦透镜021。聚焦透镜 021设置在光源01的散热支架013设置有发光芯片011的一侧。其中，聚焦透镜021能够对光源01发出的光线进行聚焦，提高光线的入射能力，并使得各色光线能够均匀分布。
进一步地，背光模组02还包括：准直透镜022。准直透镜022设置在聚焦透镜021远离光源01的一侧。其中，聚焦透镜021的设置能够使透过准直透镜022的光线平行，提高透过准直透镜022的光线的准直性。从而使得背光模组02提供的光的光线平行，形成面光源。
需要说明的是，如图6所示，光源01、聚焦透镜021和准直透镜022可以采用壳体023封装在一起。
例如，请参考图7，其示出的是背光模组02的原理图。参见图7，光源01发出的光线首先射入聚焦透镜021，聚焦透镜021对光线进行汇聚，使个光线汇聚于点O，该点O可以称为聚焦透镜021的焦点；透过聚焦透镜021并经过焦点O的光线射入准直透镜022，准直透镜022能够提高透过准直透镜022的光线的准直性，参见图7，透过准直透镜022的各条光线平行，且光线垂直于准直透镜022的出射面。
需要说明的是，在本公开实施例中，光源01可以为侧入式光源或者直下式光源，其中，侧入式光源设置在导光板的侧面，直下式光源设置在导光板的背光面。可选地，背光模组02还包括：导光板024。
光源01可以设置在导光板024的背光面；或者，光源01还可以设置在导光板024的侧面。其中，光源01设置在导光板024的侧面时，背光模组02如图8所示，此时，聚焦透镜021和准直透镜022与光源01一起设置在导光板024的侧面，该背光模组02可以称为侧入式背光模组，光源01设置在导光板024的背光面时，背光模组02如图9所示，此时，聚焦透镜021和准直透镜022与光源01一起设置在导光板024的背光面，该背光模组02可以称为直下式背光模组。
综上所述，本公开实施例提供的背光模组，通过根据标准太阳可见光的光谱中的第一颜色可见光的光谱能量与标准太阳可见光的光谱能量的比值，控制第一发光芯片发光，使得第一发光芯片发出的光的光通量与多个发光芯片发出的光的光通量的比值等于第一颜色可见光的光谱能量与标准太阳可见光的光谱能量的比值，由于第一发光芯片发出的光的光通量与多个发光芯片 发出的光的光通量的比值也即第一发光芯片发出的光的光能量与多个发光芯片发出的光的光能量的比值，因此，本公开实施例提供的光源装置中，各种颜色的光分布均匀，解决了LED光源中蓝色光的比例较高，造成人眼的视觉疲劳，甚至视网膜损伤的问题，达到了护眼的效果。
请参考图10，其示出的是本公开实施例提供的一种液晶显示装置03的结构示意图，参见图10，该液晶显示装置03包括：显示面板031和背光模组02，该背光模组02可以为图6、图8或图9任一所示的背光模组。
请参考图11，其示出的是显示面板031的结构示意图，参见图11，显示面板031包括：对盒成形的阵列基0311和彩膜基板0312，彩膜基板0312包括彩膜层03121，彩膜层03121包括黑矩阵M及开口区域N，开口区域N为除去每一个彩色像素的配线部、晶体管部(通常采用黑色矩阵隐藏)后的光线通过的部分。
其中，显示面板031还可以包括：填充在阵列基板0311和彩膜基板0312之间的液晶0313。该阵列基板0311和彩膜基板0312之间还具有隔垫物0314，该隔垫物0314分别与阵列基板0311和彩膜基板0312相接触，用于支撑阵列基板0311和彩膜基板0312，使得阵列基板0311和彩膜基板0312之间形成空间，液晶0313位于该空间内。
综上所述，本公开实施例提供的液晶显示装置，通过根据标准太阳可见光的光谱中的第一颜色可见光的光谱能量与标准太阳可见光的光谱能量的比值，控制第一发光芯片发光，使得第一发光芯片发出的光的光通量与多个发光芯片发出的光的光通量的比值等于第一颜色可见光的光谱能量与标准太阳可见光的光谱能量的比值，由于第一发光芯片发出的光的光通量与多个发光芯片发出的光的光通量的比值也即第一发光芯片发出的光的光能量与多个发光芯片发出的光的光能量的比值，因此，本公开实施例提供的光源装置中，各种颜色的光分布均匀，解决了LED光源中蓝色光的比例较高，造成人眼的视觉疲劳，甚至视网膜损伤的问题，达到了护眼的效果。
相关的黑白显示装置采用电泳原理制造而成，通常无光源，黑白显示装置内封装带有负性电荷的黑色颗粒和带有正性电荷的白色颗粒，通过改变电荷使黑色颗粒和白色颗粒有序排列，从而实现黑白分明的可视化效果，受到材料和制造工艺的限制，相关的黑白显示装置难以实现屏幕的高分辨率；本 公开实施例提供的液晶显示装置，由于显示面板的彩膜基板上包括黑矩阵及开口区域，因此，显示面板为黑白显示面板，而由于采用了日光光谱的光源，能够实现高分辨率。
本公开实施例提供的液晶显示装置，具有抗疲劳、健康护眼的特点，而且容易实现高分辨率显示，尤其适用于儿童电子读物显示屏或者抗疲劳护眼型电子书等。
本领域普通技术人员可以理解实现上述实施例的全部或部分步骤可以通过硬件来完成，也可以通过程序来指令相关的硬件完成，所述的程序可以存储于一种计算机可读存储介质中，上述提到的存储介质可以是只读存储器，磁盘或光盘等。
虽然上文中已经用一般性说明及具体实施方式，对本公开作了详尽的描述，但在本公开基础上，可以对之作一些修改或改进，这对本领域技术人员而言是显而易见的。因此，在不偏离本公开精神的基础上所做的这些修改或改进，均属于本公开要求保护的范围。
本申请要求于2015年4月22日递交的中国专利申请第201510194968.7号的优先权，在此全文引用上述中国专利申请公开的内容以作为本申请的一部分。

Claims (11)

  1. 一种光源装置的控制方法，其中，所述光源装置包括：多个发光芯片，所述多个发光芯片包括能够发出第一颜色可见光的第一发光芯片，所述方法包括：
    使所述多个发光芯片同时发光以得到一工作可见光光谱；
    获得在所述工作可见光谱中所述第一颜色可见光所占的第一能量比值；
    比较所述第一能量比值与目标能量比值；
    在所述第一能量比值不同于所述目标能量比值的情况下，将所述第一能量比值调节为所述目标能量比值。
  2. 根据权利要求1所述的控制方法，其中，所述目标能量比值为所述第一颜色可见光在太阳可见光光谱中所占的能量比值。
  3. 根据权利要求1或2所述的控制方法，其中，在所述第一能量比值不同于所述目标能量比值的情况下，改变提供到所述第一发光芯片的电流以将所述第一能量比值调节为所述目标能量比值。
  4. 一种光源装置，包括：多个发光芯片和控制单元，其中，所述多个发光芯片包括用于发出第一颜色可见光的第一发光芯片，所述控制单元构造为获得在所述多个发光芯片同时发光的情况下得到的工作可见光光谱中所述第一颜色可见光所占的第一能量比值；比较所述第一能量比值与目标能量比值；在所述第一能量比值不同于所述目标能量比值的情况下，将所述第一能量比值调节为所述目标能量比值。
  5. 根据权利要求4所述的光源装置，其中，所述目标能量比值为所述第一颜色可见光在太阳可见光光谱中所占的能量比值。
  6. 根据权利要求4或5所述的光源装置，其中，所述控制单元构造为在所述第一能量比值不同于所述目标能量比值的情况下，改变提供到所述第一发光芯片的电流以将所述第一能量比值调节为所述目标能量比值。
  7. 一种背光模组，包括：权利要求4至6任意一项所述的光源装置。
  8. 根据权利要求7所述的背光模组，还包括：设置在所述多个发光芯片的出光侧的第一透镜和第二透镜，其中，所述第一透镜设置在所述第二透镜与所述多个发光芯片之间，第一透镜构造为会聚来自所述多个发光芯片的光 线，所述第二透镜构造为将经由所述第一透镜会聚的光线变成平行光线。
  9. 根据权利要求8所述的背光模组，其中，所述背光模组还包括：导光板，所述光源装置设置在所述导光板的背面；或者，所述光源装置设置在所述导光板的侧面。
  10. 一种液晶显示装置，包括：显示面板和权利要求7至9任意一项所述的背光模组。
  11. 根据权利要求10所述的液晶显示装置，其中，
    所述显示面板包括对盒成形的阵列基板和彩膜基板，所述彩膜基板包括彩膜层，所述彩膜层包括黑矩阵及开口区域。
PCT/CN2015/089725 2015-04-22 2015-09-16 光源装置及其控制方法、背光模组和液晶显示装置 WO2016169196A1 (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US14/913,100 US10021750B2 (en) 2015-04-22 2015-09-16 Light source device and control method thereof, backlight module and liquid crystal display device

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201510194968.7A CN104879681B (zh) 2015-04-22 2015-04-22 光源及其控制方法、背光模组和液晶显示装置
CN201510194968.7 2015-04-22

Publications (1)

Publication Number Publication Date
WO2016169196A1 true WO2016169196A1 (zh) 2016-10-27

Family

ID=53947285

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2015/089725 WO2016169196A1 (zh) 2015-04-22 2015-09-16 光源装置及其控制方法、背光模组和液晶显示装置

Country Status (3)

Country Link
US (1) US10021750B2 (zh)
CN (1) CN104879681B (zh)
WO (1) WO2016169196A1 (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112004280A (zh) * 2019-05-27 2020-11-27 厦门赢科光电有限公司 一种led发光系统和灯具

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104879681B (zh) * 2015-04-22 2017-12-08 京东方科技集团股份有限公司 光源及其控制方法、背光模组和液晶显示装置
CN106764691A (zh) * 2016-12-31 2017-05-31 复旦大学 一种基于量子点led的太阳光谱及黑体辐射光谱模拟系统
CN107342066B (zh) * 2017-06-19 2019-07-23 Oppo广东移动通信有限公司 屏幕亮度调节方法、装置及其设备
CN111048052A (zh) * 2019-12-30 2020-04-21 深圳Tcl新技术有限公司 显示控制方法、装置、设备及计算机存储介质
CN113112948B (zh) * 2021-04-26 2022-11-04 Tcl通讯（宁波）有限公司 蓝光滤镜强度的调节方法、装置、显示设备及存储介质
KR102446742B1 (ko) * 2021-11-03 2022-09-26 주식회사 에스씨엘 청색광이 저감된 고효율 조명 장치

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090140669A1 (en) * 2007-11-27 2009-06-04 Masten Jr James W Highly Directed, Adjustable Intensity Reading/Keyboard Light with Optimized Spectral Output
US8111023B2 (en) * 2008-12-18 2012-02-07 National Chi Nan University Control system for different colors of light emitting diodes
CN102573229A (zh) * 2011-12-27 2012-07-11 杭州浙大三色仪器有限公司 一种保护眼睛的led照明灯
CN202488805U (zh) * 2011-12-27 2012-10-10 杭州浙大三色仪器有限公司 一种保护眼睛的led照明灯
CN103268039A (zh) * 2013-05-13 2013-08-28 北京京东方光电科技有限公司 一种背光模组及显示装置
CN104879681A (zh) * 2015-04-22 2015-09-02 京东方科技集团股份有限公司 光源及其控制方法、背光模组和液晶显示装置

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009072296A1 (ja) * 2007-12-06 2009-06-11 Panasonic Corporation 面状照明装置およびそれを用いた液晶表示装置
CN201344389Y (zh) * 2008-12-31 2009-11-11 楼满娥 低色温发光二极管
US8558782B2 (en) * 2009-03-24 2013-10-15 Apple Inc. LED selection for white point control in backlights
CN101790264B (zh) * 2009-12-24 2013-04-17 复旦大学 一种类太阳光谱led的调光方法
TWI468810B (zh) * 2012-11-05 2015-01-11 Innocom Tech Shenzhen Co Ltd 背光模組
CN103413495A (zh) * 2013-07-17 2013-11-27 京东方科技集团股份有限公司 一种显示装置

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090140669A1 (en) * 2007-11-27 2009-06-04 Masten Jr James W Highly Directed, Adjustable Intensity Reading/Keyboard Light with Optimized Spectral Output
US8111023B2 (en) * 2008-12-18 2012-02-07 National Chi Nan University Control system for different colors of light emitting diodes
CN102573229A (zh) * 2011-12-27 2012-07-11 杭州浙大三色仪器有限公司 一种保护眼睛的led照明灯
CN202488805U (zh) * 2011-12-27 2012-10-10 杭州浙大三色仪器有限公司 一种保护眼睛的led照明灯
CN103268039A (zh) * 2013-05-13 2013-08-28 北京京东方光电科技有限公司 一种背光模组及显示装置
CN104879681A (zh) * 2015-04-22 2015-09-02 京东方科技集团股份有限公司 光源及其控制方法、背光模组和液晶显示装置

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112004280A (zh) * 2019-05-27 2020-11-27 厦门赢科光电有限公司 一种led发光系统和灯具

Also Published As

Publication number Publication date
US10021750B2 (en) 2018-07-10
US20170064789A1 (en) 2017-03-02
CN104879681B (zh) 2017-12-08
CN104879681A (zh) 2015-09-02

Similar Documents

Publication Publication Date Title
WO2016169196A1 (zh) 光源装置及其控制方法、背光模组和液晶显示装置
US20230330383A1 (en) Circadian-friendly led light sources
KR101126478B1 (ko) 액정표시장치
US9658381B2 (en) Backlight module and liquid crystal display including same
EP2965308B1 (en) Techniques for dual modulation display with light conversion
US8757808B2 (en) Projector having light emission devices
JP2012022028A (ja) 液晶ディスプレイ
US20150221258A1 (en) Backlight driving circuit, driving method and backlight module
JP2004193029A (ja) 光源装置及び表示装置
US9356204B2 (en) Using quantum dots for extending the color gamut of LCD displays
US20230156883A1 (en) Melanopic light system using cyan pumped white leds
US11367811B2 (en) White light emitting diode and backlight module
CN109473457A (zh) 用于减少环境光在发射显示器中的反射的方法和系统
RU2633800C2 (ru) Способ скрининга оптической пленки на основе фосфора, используемой в модуле фоновой подсветки, и модуль фоновой подсветки с такой пленкой
US20230189411A1 (en) Melanopic light system with high cri using cyan direct emitters
Erdem et al. Color Science and Photometry for Lighting with LEDs and Semiconductor Nanocrystals
JP2007087995A (ja) 発光ダイオード用色度及び輝度調整用液晶フィルタ
Huang et al. Liquid-crystal-modulated correlated color temperature tunable light-emitting diode with highly accurate regulation
TW202120868A (zh) 具有受控制色溫之動態照明裝置
JP6452739B2 (ja) 液晶ディスプレイ
TWI391743B (zh) 高色彩表現之顯示裝置及其製造方法
JP6727257B2 (ja) 液晶ディスプレイ
JP2016026315A (ja) 液晶ディスプレイ
TWI801848B (zh) 反射式顯示器及其白光源
US9897746B2 (en) Liquid crystal display device

Legal Events

Date Code Title Description
WWE Wipo information: entry into national phase

Ref document number: 14913100

Country of ref document: US

121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 15889682

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 15889682

Country of ref document: EP

Kind code of ref document: A1

32PN Ep: public notification in the ep bulletin as address of the adressee cannot be established

Free format text: NOTING OF LOSS OF RIGHTS PURSUANT TO RULE 112(1) EPC (EPO FORM 1205A DATED 23/04/2018)

122 Ep: pct application non-entry in european phase

Ref document number: 15889682

Country of ref document: EP

Kind code of ref document: A1