CN110412796A - A kind of multiple light courcess backlight module, display and local controlled light method - Google Patents

A kind of multiple light courcess backlight module, display and local controlled light method Download PDF

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Publication number
CN110412796A
CN110412796A CN201910829221.2A CN201910829221A CN110412796A CN 110412796 A CN110412796 A CN 110412796A CN 201910829221 A CN201910829221 A CN 201910829221A CN 110412796 A CN110412796 A CN 110412796A
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China
Prior art keywords
reflector plate
light
several
hot spot
light source
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CN201910829221.2A
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Chinese (zh)
Inventor
王汉锋
涂明强
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Individual
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Individual
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Priority to CN201910829221.2A priority Critical patent/CN110412796A/en
Publication of CN110412796A publication Critical patent/CN110412796A/en
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    • 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
    • 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
    • G02F1/133605—Direct backlight including specially adapted reflectors
    • 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
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/3406—Control of illumination source
    • 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

Abstract

A kind of multiple light courcess backlight module, including several first light source components and a reflector plate, each first light source component includes first laser transmitter and the first extender lens, first extender lens is used to that the first light beam will to be formed after the laser beam expanding of corresponding first laser transmitter injection, length of first light beam along the section perpendicular to its exit direction is greater than width, first light beam irradiates to reflector plate from reflector plate side and forms the first hot spot on reflector plate, the area of first hot spot is greater than the area that the first light beam closes on the section of the first extender lens side, several first hot spots are covered with reflector plate surface, several first hot spots are covered with reflector plate surface；When carrying out local controlled light to liquid crystal display panel, can only light with to the corresponding first light source component of light control region, due to can be realized local controlled light, the power consumption of backlight module can not only be reduced in this way, and be conducive to improve the contrast and imaging results of image on liquid crystal display panel.

Description

A kind of multiple light courcess backlight module, display and local controlled light method
Technical field
The invention belongs to backlight technology field more particularly to a kind of multiple light courcess backlight modules, display and local controlled light Method.
Background technique
The implementation method of common side entering type local controlled light, the control of the part light source of the unilateral light source mainly used, by It is big in LED light emitting angle, it can be only formed a face, area is very big, causes the effect of local controlled light undesirable, under straight The local controlled light effect of formula is far short of what is expected, is unfavorable for improving backlight display effect.
Summary of the invention
It is an object of the invention to overcome above-mentioned the deficiencies in the prior art, provides and a kind of do not need to enter by the side of light guide plate Formula multiple light courcess backlight module, display and local controlled light method.
The invention is realized in this way a kind of multiple light courcess backlight module, including several first light source components and a reflector plate, Each first light source component includes first laser transmitter and is arranged in the first of first laser transmitter side Extender lens, first extender lens are used to be formed after the laser beam expanding of the corresponding first laser transmitter injection First light beam of reflector plate described in directive, length of first light beam along the section perpendicular to its exit direction are greater than width, First light beam irradiates to the reflector plate from the reflector plate side and forms the first hot spot on the reflector plate, described The length of first hot spot is greater than first light beam and closes on one lateral edge of the first extender lens cutting perpendicular to its exit direction The length in face, and the area of first hot spot be greater than first light beam close on one lateral edge of the first extender lens perpendicular to The area in the section of its exit direction, several first hot spots are covered with the reflector plate surface.
Specifically, the same side of the reflector plate, several first light sources are arranged in several first light source components Component is irradiated to several first hot spots obtained on the reflector plate and is sequentially connected；
Alternatively, the two opposite sides of the reflector plate are arranged in several first light source components, and two opposite sides is several The first light source component is symmetrical arranged, and several first light source components of the same side are irradiated to be obtained on the reflector plate Several first hot spots are sequentially connected；
Alternatively, the two opposite sides of the reflector plate are arranged in several first light source components, and two opposite sides is several The first light source component shifts to install, if several first light source components of side are irradiated to and are formed on the reflector plate Several first light source components for doing first hot spot and the other side irradiate several described formed on the reflector plate One hot spot is cross-linked setting.
It further, further include several second light source components, the first light source component and second light source component are set respectively It sets in two adjacent sides of the reflector plate, each second light source component includes second laser transmitter and is arranged in institute The second extender lens of second laser transmitter side is stated, second extender lens is used for the corresponding second laser The second light beam of reflector plate described in directive is formed after the laser beam expanding that transmitter projects, second light beam is along perpendicular to its outgoing The length in the section in direction is greater than width, and second light beam is irradiated from the reflector plate side to the reflector plate and described The second hot spot is formed on reflector plate, the length of second hot spot is greater than second light beam and closes on second extender lens one Lateral edge perpendicular to the section of its exit direction length, and the area of second hot spot be greater than second light beam close on it is described Area of second extender lens, one lateral edge perpendicular to the section of its exit direction, several second hot spots and several described first Hot spot intersection.
Specifically, the same side of the reflector plate, several second light sources are arranged in several second light source components Component is irradiated to several second hot spots obtained on the reflector plate and is sequentially connected；
Alternatively, the two opposite sides of the reflector plate are arranged in several second light source components, and two opposite sides is several The second light source component is symmetrical arranged, and several second light source components of the same side are irradiated to be obtained on the reflector plate Several second hot spots are sequentially connected；
Alternatively, the two opposite sides of the reflector plate are arranged in several second light source components, and two opposite sides is several The second light source component shifts to install, if several second light source components of side are irradiated to and are formed on the reflector plate Several second light source components for doing second hot spot and the other side irradiate several described formed on the reflector plate Two hot spots are cross-linked setting.
Further, the reflector plate side is equipped with diffuser plate for receiving the reflector plate reflection light, and described the One light beam and the second light beam diffuser plate described in directive after reflector plate reflection, and deviate from the reflection from the diffuser plate The side of piece is projected, and setting is spaced between the reflector plate and the diffuser plate.
Specifically, first extender lens is any one of spherical lens, free-form surface lens, ellipsoid lens； Second extender lens is any one of spherical lens, free-form surface lens, ellipsoid lens.
Specifically, the reflector plate is plane reflection piece, spheric reflection piece, ellipsoid reflector plate, free form surface reflector plate Any one of.
Further, be equipped with several light barriers on the outside of the reflector plate and diffuser plate, the reflector plate, diffuser plate with it is several Light barrier is enclosed a light mixing cavity.
Specifically, the diffuser plate be semi-transparent semi-reflecting plate, the diffuser plate with a thickness of 0.3mm-5mm, the diffuser plate The distance between reflector plate is 1mm-15mm.
Further, several support columns are connected between the reflector plate and diffuser plate, several support columns are transparent Support column or white support column；The position of two adjacent first hot spots connections partly overlaps setting；Or two-phase The position of adjacent second hot spot connection partly overlaps；The position of the two first hot spot overlappings is arranged in several support columns It sets or the position of two second hot spots overlapping.
The embodiment of the invention also provides a kind of displays, including foregoing multiple light courcess backlight module.
The embodiment of the invention also provides a kind of local controlled light method of multiple light courcess backlight module using the foregoing description, packets Include following steps:
Input picture: the picture signal for being imaged by liquid crystal display panel is received；
Image zooming-out: carrying out data analysis to input picture, generates backlight value according to image classification and characteristic value；
It generates backlight subarea modulated signal: according to the backlight value and then generating corresponding backlight modulation signal, the back Light modulating signal includes at least backlight subarea modulated signal；
Backlight subarea is adjusted: the backlight subarea modulated signal being fed back to backlight control module, utilizes the backlight control Molding block carries out backlight subarea adjusting；
Backlight subarea adjusts and is adjusted according to preset backlight subarea unit backlighting requirements, and backlight subarea unit is default When, the region that one on the reflector plate first hot spot intersects with second hot spot is defined as backlight point Area's unit, each first hot spot and the second hot spot include several described backlight subarea units, several first light Several backlight subarea units that spot and several second hot spots are crossed to form are covered with the reflector plate towards liquid crystal display panel A side surface, several pixels on the corresponding liquid crystal display panel of each backlight subarea unit；
According to the corresponding backlight subarea signal, the corresponding backlight subarea unit is determined, and then determination is corresponding First hot spot perhaps/and the second hot spot according to corresponding first hot spot or the corresponding institute of the second hot spot opening State first light source component or second light source component；
Pixel compensation: according to image classification and characteristic value, pixel compensation is carried out to liquid crystal display panel.
Specifically, further include following steps in the backlight subarea regulating step:
It expands: laser beam expand to form the first light beam or the second light beam, first light beam is along vertical Length in the section of its exit direction is greater than width, and length of second light beam along the section perpendicular to its exit direction is big In width；
Side irradiation: first light beam or the second light beam is allowed to irradiate from the reflector plate side to the reflection Piece, first light beam or/and the second light beam project direction and the reflector plate surface in angle setting, first light beam It is irradiated to the reflector plate and forms the first hot spot, the length of first hot spot is greater than first light beam and closes on first expansion One lateral edge of beam lens perpendicular to the section of its exit direction length, and the area of first hot spot be greater than first light beam One lateral edge of the first extender lens is closed on perpendicular to the area in the section of its exit direction；Or second light beam shines It is mapped to reflector plate and forms the second hot spot, the length of second hot spot is greater than second light beam and closes on second extender lens One lateral edge perpendicular to the section of its exit direction length, and the area of second hot spot be greater than second light beam close on institute One lateral edge of the second extender lens is stated perpendicular to the area in the section of its exit direction, the backlight subarea unit is located at the institute formed It states in the first hot spot or the second spot area；
Reflection and light mixing: first hot spot or the second hot spot is allowed to be reflected towards by the reflector plate with interval The diffuser plate being arranged, the part reflected light that the reflector plate reflects are realized mixed between the reflector plate and diffuser plate Light, part reflected light and the light being irradiated on the diffuser plate after light mixing illuminate the diffuser plate towards described anti-jointly Penetrate the side position corresponding with the backlight subarea unit of piece；
Filtering and diffusion: the light for entering its inside is filtered and is spread using the diffuser plate；The reflector plate Reflected beam portion be directly over filtering and diffusion after project, and formed the first emergent ray；Other part is by light mixing, filtering It is projected with after diffusion, and forms the second emergent ray；First emergent ray and the second emergent ray collectively constitute directive institute State the incidence surface of liquid crystal display panel and the emergent ray of the backlight subarea unit face position.
Multiple light courcess backlight module provided in an embodiment of the present invention, by the first extender lens of first light source component by laser The first light beam is formed after being expanded, several first light beams are irradiated from reflector plate side to reflector plate, several first light beam irradiations Several first hot spots formed after on to reflector plate are covered with reflector plate surface, are advantageously ensured that on reflector plate in this way with enough Reflected light；What several second hot spots formed simultaneously using several second light source components can be formed several first light source components Several first hot spots are pointedly enhanced, to improve corresponding region on reflector plate (i.e. backlight subarea unit) reflective light intensity Degree forms the reflected light for being pointed into the plane of incidence of liquid crystal display panel after reflecting the first hot spot and the second hot spot using reflector plate, lead to It crosses to after the operation such as the further light mixing of reflected light, filtering and diffusion, so as to form the uniform light of high brightness, reaches Improve the effect of liquid crystal display panel corresponding region brightness of image；When needing to carry out local controlled light to liquid crystal display panel, can only light First light source component corresponding with the first hot spot to light control region, or/and only light and the second hot spot to light control region Corresponding second light source component, and can select to sexually revise as needed with to corresponding first hot spot of light control region or/and The brightness of second hot spot further increases the effect of local controlled light, and the brightness for changing the first hot spot of corresponding position can pass through The power of corresponding first laser transmitter is improved to realize, and the other positions in addition to corresponding position can be reduced simultaneously The brightness of the first hot spot improve the contrast effect of control optical position and other positions, reduce the other positions except corresponding position The brightness of first hot spot can be changed by reducing the power of the first laser transmitter of corresponding position or being turned off realizing The brightness for becoming the second hot spot of corresponding position can realize by improving the power of corresponding second laser transmitter, and can Control optical position and other positions are improved to reduce the brightness of the first hot spot of other positions in addition to corresponding position simultaneously Contrast effect, the brightness for reducing the first hot spot of the other positions except corresponding position can be swashed by reducing the first of corresponding position The power of optical transmitting set is turned off to realize, due to can be realized local controlled light, can not only reduce backlight mould in this way The power consumption of group, and be conducive to improve the contrast and imaging results of image on liquid crystal display panel.
Detailed description of the invention
Fig. 1 is that a kind of section of first light beam and the second light beam shows in multiple light courcess backlight module provided in an embodiment of the present invention It is intended to.
Fig. 2 is the structural schematic diagram one of multiple light courcess backlight module provided in an embodiment of the present invention.
Fig. 3 is the structural schematic diagram two of multiple light courcess backlight module provided in an embodiment of the present invention.
Fig. 4 is the structural schematic diagram three of multiple light courcess backlight module provided in an embodiment of the present invention.
Fig. 5 is the structural schematic diagram four of multiple light courcess backlight module provided in an embodiment of the present invention.
Fig. 6 is the structural schematic diagram of the multiple light courcess backlight module provided in an embodiment of the present invention with prism.
Fig. 7 is the structural schematic diagram of the multiple light courcess backlight module provided in an embodiment of the present invention with reflective mirror.
Fig. 8 is the signal that several first light sources illuminate reflector plate in multiple light courcess backlight module provided in an embodiment of the present invention Figure.
Fig. 9 is the schematic diagram one that multiple light courcess backlight module provided in an embodiment of the present invention realizes local controlled light.
Figure 10 is the schematic diagram two that multiple light courcess backlight module provided in an embodiment of the present invention realizes local controlled light.
Figure 11 is the schematic diagram three that multiple light courcess backlight module provided in an embodiment of the present invention realizes local controlled light.
Figure 12 is the schematic diagram four that multiple light courcess backlight module provided in an embodiment of the present invention realizes local controlled light.
Figure 13 is the schematic diagram five that multiple light courcess backlight module provided in an embodiment of the present invention realizes local controlled light.
Figure 14 is in the embodiment of the present invention using the schematic diagram of the local controlled light method of multiple light courcess mould group.
Figure 15 is to adjust schematic diagram using the backlight subarea of the local controlled light method of multiple light courcess mould group in the embodiment of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete Site preparation description.
As shown in figure 1-9, a kind of multiple light courcess backlight module provided in an embodiment of the present invention, including several first light source groups Part 1 and a reflector plate 3, each first light source component 1 include first laser transmitter 11 and are arranged in first laser transmitter First extender lens 12 of 11 sides, the first extender lens 12 are used for the laser for projecting corresponding first laser transmitter 11 The first light beam of directive reflector plate 3 is formed after expanding, length of first light beam along the section perpendicular to its exit direction is greater than width Degree, in the present embodiment, expand light beam along the section perpendicular to its exit direction can in linear, bar shaped, rectangle, oblong, Any shape in elliptical shape etc., as long as its (expanding light beam along the section perpendicular to its exit direction) meets length and be greater than Its width, is not especially limited herein；The direction of illumination of first light beam and 3 surface of reflector plate are arranged in angle, the first light Beam irradiates from 3 side of reflector plate to reflector plate 3 and is formed on reflector plate 3 first hot spot, and the length of the first hot spot is greater than first Light beam closes on 12 1 lateral edge of the first extender lens perpendicular to the length in the section of its exit direction, and the area of the first hot spot is greater than First light beam closes on 12 1 lateral edge of the first extender lens perpendicular to the area in the section of its exit direction, and several first hot spots are covered with 3 surface of reflector plate.
Multiple light courcess backlight module provided in an embodiment of the present invention carries out laser to expand rear shape by the first extender lens 12 At the first light beam, several first light beams are irradiated from 3 side of reflector plate to reflector plate 3, and several first light beams are irradiated on reflector plate 3 Several first hot spots formed afterwards are covered with 3 surface of reflector plate, and advantageously ensure that has enough reflected lights in this way on reflector plate 3, Form the reflected light for being pointed into the plane of incidence of liquid crystal display panel, by reflection after several first light beams being reflected using reflector plate 3 After the operation such as the further light mixing of light, filtering and diffusion, so as to form the uniform light that can be used as backlight, and guarantee Emergent ray has enough intensity, has the function that improve LCD panel display effect；When needing to liquid crystal display panel carry out office When light is controlled in portion, first light source component 1 corresponding with the first hot spot to light control region can be only lighted, and can select as needed The effect for sexually revising with the brightness to corresponding first hot spot of light control region and further increasing local controlled light is selected, corresponding position is changed The brightness for the first hot spot set can realize by improving the power of corresponding first laser transmitter 11, and can be simultaneously The brightness of the first hot spot of the other positions in addition to corresponding position is reduced to improve the comparison of control optical position and other positions and imitate Fruit, the brightness for reducing the first hot spot of the other positions except corresponding position can be emitted by reducing the first laser of corresponding position The power of device 11 is turned off to realize, due to can be realized local controlled light, can not only reduce backlight module in this way Power consumption, and be conducive to improve the contrast and imaging results of image on liquid crystal display panel；Since several first light beams are from anti- 3 side directive reflector plate 3 of piece is penetrated, several first laser transmitters 11 and the first extender lens 12 are arranged at 3 side of reflector plate, I.e. the structure is side entering type, advantageously reduces product thickness in this way, simultaneously because not needing using light guide plate, thus will not draw Interiors of products device aging is sent out, the problem of deforming, influence product quality；And the multiple light courcess backlight module that the invention provides Internal first laser transmitter 11 can be obtained directly by buying, and the first extender lens 12 and 3 pairs of reflector plate production Environment and technique are required well below light guide plate, consequently facilitating production and processing, reaching reduces production cost, while significant The effect enhanced product performance.
As shown in Fig. 8,9,11, specifically, several first light source components 1 are arranged in the same side of reflector plate 3, and several first Light source assembly 1 be irradiated to several first hot spots obtained on reflector plate 3 be sequentially connected in this way convenient for wiring, facilitate route setting and Connection；
Alternatively, the two opposite sides of reflector plate 3, and several first light of two opposite sides are arranged in several first light source components 1 Source component 1 is symmetrical arranged, several first light source components 1 of the same side be irradiated to several first hot spots for being obtained on reflector plate 3 according to Secondary connection is convenient for improving the first hot spot of corresponding position by opening the first light source component 1 of two opposite sides simultaneously in this way Brightness, to enhance control light effect, and two first hot spots that several first light source components 1 of two opposite sides are formed can be realized Light and shade is complementary, convenient for guaranteeing each point brightness uniformity on reflector plate；
Alternatively, the two opposite sides of reflector plate 3, and several first light of two opposite sides are arranged in several first light source components 1 Source component 1 shifts to install, several first hot spots formed on several first light source components 1 of side irradiation reflector plate 3 with it is another Several first hot spots for being formed are cross-linked setting on several first light source components 1 irradiation reflector plate 3 of side, and such two adjacent the Certain spacing is kept between one light source assembly 1, is conducive to radiate, is easily installed simultaneously；
The set-up mode of three of the above first light source component 1 can fully ensure that the reflective light intensity of each point on reflector plate 3 Degree, while the local controlled light to liquid crystal display panel can also be realized by adjusting the first light source component 1 of corresponding position, to mention The display effect of high liquid crystal display panel.
As shown in Fig. 5,10,11,12,13, further, multiple light courcess backlight module provided in an embodiment of the present invention is also wrapped Several second light source components 2 are included, first light source component 1 and second light source component 2 are separately positioned on two sides adjacents of reflector plate 3 Side, each second light source component 2 include second laser transmitter 21 and are arranged in the second of 21 side of second laser transmitter Extender lens 22, the second extender lens 22 are used to be formed after laser beam expanding that corresponding second laser transmitter 21 projects and penetrate To the second light beam of reflector plate 3, length of first light beam along the section perpendicular to its exit direction is greater than width, the second light beam Direction of illumination and 3 surface of reflector plate are arranged in angle, and the second light beam is irradiated from 3 side of reflector plate to reflector plate 3 and in reflector plate 3 The second hot spot of upper formation, the length of the second hot spot are greater than the second light beam and close on 22 1 lateral edge of the second extender lens perpendicular to its outgoing The length in the section in direction, and the area of the second hot spot is greater than the second light beam and closes on 22 1 lateral edge of the second extender lens perpendicular to it The area in the section of exit direction, several second hot spots intersect with several first hot spots, after the second hot spot intersects with the first hot spot The brightness of intersecting area can enhance, in this way convenient for the brightness for improving corresponding position on liquid crystal display panel, consequently facilitating realizing local controlled Light function, it is especially convenient to be directed to the exigent image local backlight control of some brightness and contrasts.
In the present embodiment, second light source component 2 can play corresponding on enhancing reflector plate 3 with the cooperation of first light source component 1 The effect of region (i.e. backlight subarea unit) intensity of reflected light, first light source component 1 may be either same with second light source component 2 Light source assembly may be different light source assembly, i.e. first laser transmitter 11 and the first extender lens 12 is sent out with second laser Emitter 21 and the second extender lens 22 can be for identical laser emitter and extender lenses, or different laser hairs Emitter and extender lens, as long as second light source component 2 can be combined with first light source component 1 corresponds to area on realization enhancing reflector plate Domain (i.e. aftermentioned backlight subarea unit) intensity of reflected light.
Several second hot spots intersect vertically with several first hot spots, and first hot spot intersects position with the second hot spot on reflector plate 3 The hot spot set overlaps, and enters so that the reflected light of intersection location much stronger than other positions, is reflected into liquid crystal display panel in this way The light intensity for penetrating face is stronger relative to other positions, so as to reach the brightness of image for improving corresponding position on liquid crystal display panel Effect, realize to the local controlled light effect of liquid crystal display panel.
Specifically, the same side of reflector plate 3 is arranged in several second light source components 2, and several second light source components 2 are irradiated to Several second hot spots obtained on reflector plate 3 are sequentially connected in this way convenient for wiring, and route is facilitated to be arranged and connect；
Alternatively, the two opposite sides of reflector plate 3, and several second light of two opposite sides are arranged in several second light source components 2 Source component 2 is symmetrical arranged, several second light source components 2 of the same side be irradiated to several second hot spots for being obtained on reflector plate 3 according to Secondary connection is convenient for improving the second hot spot of corresponding position by opening the second light source component 2 of two opposite sides simultaneously in this way Brightness, to enhance control light effect, and two second hot spots that several second light source components 2 of two opposite sides are formed can be realized Light and shade is complementary, convenient for guaranteeing each point brightness uniformity on reflector plate 3；
Alternatively, the two opposite sides of reflector plate 3, and several second light of two opposite sides are arranged in several second light source components 2 Source component 2 shifts to install, several second hot spots formed on several second light source components 2 of side irradiation reflector plate 3 with it is another Several second hot spots for being formed are cross-linked setting on several second light source components 2 irradiation reflector plate 3 of side, and such two adjacent the Certain spacing is kept between two light source assemblies 2, is conducive to radiate, is easily installed simultaneously；
The intensity of reflected light of each point on reflector plate 3 can be fully ensured that in this way, while can also be by adjusting corresponding position First light source component 2 and second light source component 2, by the first hot spot for allowing the first light source component 1 of corresponding position to be formed with The second hot spot that second light source component 2 is formed intersects to improve the brightness of corresponding region on reflector plate 3, and then improves liquid crystal display panel The brightness of upper corresponding position image, consequently facilitating realize the local controlled light to liquid crystal display panel, it is especially convenient to be directed to some brightness Local backlight control is carried out with the exigent image of contrast.
As shown in Figures 6 and 7, specifically, first light beam irradiates after adjusting at least partially through optical path to reflector plate 3, And the first light beam irradiates after reflector plate 3 a part at least forming the first hot spot after optical path adjusts；Or the Two light beams irradiate after adjusting at least partially through optical path to reflector plate 3, and the second light beam is irradiated after optical path adjusts to anti- It penetrates after piece 3 and at least forms a part of the second hot spot.
Specifically, refering to Fig. 6, specifically, first light beam is irradiated to reflection after prism 3a carries out optical path adjustment On piece 3, prism 3a setting is in 12 side of the first extender lens, and prism 3a is for making the first light beam be biased to 3 side of reflector plate, and first Light beam irradiates the whole that the first hot spot is formed to reflector plate 3 after prism 3a carries out optical path adjustment, is conducive to diminution the in this way Angle and distance between one laser emitter 11 and the first extender lens 12 and reflector plate 3, consequently facilitating reducing backlight module Thickness, be easy to implement the ultrathin design of display；
Or second light beam by prism 3a carry out optical path adjustment after be irradiated on reflector plate 3, prism 3a setting exists Second extender lens, 22 side, for making the second light beam be biased to 3 side of reflector plate, the second light beam carries out prism 3a by prism 3a The whole for forming the second hot spot to reflector plate 3 is irradiated after optical path adjustment, is conducive to reduce second laser transmitter 21 and the in this way Angle and distance between two extender lenses 22 and reflector plate 3 are easy to implement imaging consequently facilitating reducing the thickness of backlight module The ultrathin design of device.
Specifically, refering to Fig. 7, first light beam at least partly light beam irradiates after reflective mirror 3b carries out optical path adjustment Onto reflector plate 3, reflective mirror 3b is arranged in side of the reflector plate 3 far from the first extender lens 12, reflective mirror 3b and reflector plate it Between angle less than 90 °, reflective mirror 3b closes on the first extender lens 12 at least partly the first light beam to be reflected towards reflector plate 3 Side, in the present embodiment, the first beam section is shone directly on reflector plate 3, and the first light beam shines directly on reflector plate 3 The second local hot spot that the first partial hot spot and part formed afterwards is formed after in reflected illumination to reflector plate 3 is collectively formed The first hot spot, caused by being conducive to due to overcoming the irradiating angle the first light beam, irradiation distance and expand degree etc. Closed on reflector plate 3 the position irradiation of first extender lens 12 less than defect, to be conducive to reduce laser emitter 1 and the Angle and distance between one extender lens 12 and reflector plate 3, while guaranteeing the exposure intensity of the first light beam as far as possible, convenient for reducing The thickness of backlight module, realizes the ultrathin design of display, while guaranteeing brightness and the effective fruit of backlight of the light beam of irradiation；
Or second light beam at least partly light beam by reflective mirror 3b carry out optical path adjustment after be irradiated to reflector plate 3 On, side of the reflector plate 3 far from the second extender lens 22 is arranged in reflective mirror 3b, and the angle between reflective mirror 3b and reflector plate is small In 90 °, reflective mirror 3b is used at least partly the second light beam being reflected towards the side that reflector plate 3 closes on the second extender lens 22, this In embodiment, the second beam section is shone directly on reflector plate 3, what the second light beam was formed after shining directly on reflector plate 3 The second light that the 4th local hot spot that third part hot spot and part are formed after in reflected illumination to reflector plate 3 is collectively formed Spot, caused by being conducive to due to overcoming the irradiating angle the second light beam, irradiation distance and expand degree etc. on reflector plate 3 Close on the second extender lens 22 position irradiation less than defect, thus be conducive to reduce laser emitter 1 and second expand Angle and distance between mirror 22 and reflector plate 3, while guaranteeing the exposure intensity of the second light beam as far as possible, convenient for reducing backlight module Thickness, realize the ultrathin design of display, at the same guarantee irradiation light beam brightness and the effective fruit of backlight.
Specifically, 2 power adjustable of several first light source components and/or second light source component, i.e., several first light source groups The intensity that part is irradiated to the first hot spot formed on reflector plate 3 is adjustable；And/or second light source component 2 is irradiated on reflector plate 3 The intensity of the second hot spot formed is adjustable, in this way convenient for according to the corresponding first light source component 1 of practical control light demand adjustment and/or The brightness of person's second light source component 2, to realize accurately local controlled light effect.
Such as Fig. 8~13, specifically, the reflector plate 3 is rectangular reflection piece 3, and several settings of first light source component 1 are being reflected The side or two opposite sides of the length direction of piece 3.
Specifically, the side or two of the width direction of reflector plate 3 is arranged in relatively in several second light source components 2 Side.
As shown in figure 13, further, the first light source component 1 or second light source component 2 are rotatably connected on rotation On rotation mechanism, rotating mechanism is used to adjust first light source component 1 and irradiates direction or second light source component 2 to reflector plate 3 The direction to reflector plate 3 is irradiated, and then adjusts the position of the first hot spot or the second hot spot on reflector plate 3；Just can in this way The first hot spot or the formation of several second light source components 2 that several first light source components 1 are formed enough are controlled by rotating mechanism The second hot spot the same area intersect, promote multiple tracks hot spot (the first hot spot or the second hot spot) superposition, to significantly mention The reflectance lightness of high intersecting area reaches the brightness for significantly increasing the image of corresponding position on liquid crystal display, to realize part Dimming effect；In the present embodiment, the rotating mechanism provided include by servo motor drive rotating seat, first light source component 1 or Person/and second light source component 2 be fixed on rotating seat, by servo motor drive rotating seat drive first light source component 1 or/ It rotates to reach the effect for changing first light source component 1 or 2 direction of illumination of second light source component with second light source component 2 Fruit, certainly in other embodiments, the structure of rotating mechanism can also be changed accordingly according to actual needs, as long as can It realizes and first light source component 1 or second light source component 2 is driven to rotate, and will not be described here in detail.
As shown in Fig. 2~7, further, 3 side of reflector plate is equipped with the expansion for receiving 3 reflection light of reflector plate It falls apart 4, setting is spaced between reflector plate 3 and diffuser plate 4, is conducive to light mixing after reflector plate 3 and the setting of the interval of diffuser plate 4, simultaneously Diffuser plate 4 itself has the function of filtering and being diffused reflected light, to advantageously ensure that final directive liquid crystal display panel The light of the plane of incidence is uniformly, to be conducive to improve imaging quality.
Specifically, it is arranged in parallel between the reflector plate 3 and diffusion sheet or is arranged in angle, reflector plate 3 and diffusion sheet When being arranged in angle, the spacing between reflector plate 3 and diffusion sheet is laterally away from the first expansion from close to the one of the first extender lens 12 The side of beam lens 12 is in tapered setting.
Specifically, first extender lens 12 is spherical lens, free-form surface lens, any in ellipsoid lens Kind；Second extender lens 22 is any one of spherical lens, free-form surface lens, ellipsoid lens.
Specifically, the reflector plate is plane reflection piece 3, spheric reflection piece 3, ellipsoid reflector plate 3, free form surface reflection Any one of piece 3.
Specifically, the first light beam and the second light beam the directive diffuser plate 4 after the reflection of reflector plate 3, and deviate from from diffuser plate 4 It uniformly projects the side of reflector plate 3.
Further, be equipped with several light barriers on the outside of reflector plate 3 and diffuser plate 4, reflector plate 3, diffuser plate 4 with it is several light-blocking Plate is enclosed a light mixing cavity, and light mixing cavity is conducive to the utilization rate of raising reflected light, intensity needed for guaranteeing backlight, and Be conducive to that diffuser plate 4 is allowed to be uniformly illuminated towards the side of reflector plate 3 by light mixing, such light is further by diffuser plate 4 It just can uniformly be projected from diffuser plate 4 away from the side of reflector plate 3 after diffusion, to meet the backlighting requirements of product；In another reality It applies in example, in order to further increase the utilization rate of reflected light, light barrier can also be set to diffusing reflection plate, pass through diffusing reflection plate The light for reflexing to thereon is reflexed on reflector plate 3 or diffuser plate 4, to further increase the utilization rate of reflected light.
Specifically, the diffuser plate 4 with a thickness of 0.3mm-5mm, the distance between diffuser plate 4 and reflector plate 3 are 1mm- 15mm；In the present embodiment, diffuser plate 4 with a thickness of 0.5mm-3mm, the distance between diffuser plate 4 and reflector plate 3 are 2mm- 12mm；Certainly, in other embodiments, diffuser plate 4 and the distance between diffuser plate 4 and reflector plate 3 can also be according to products Actual needs set, thickness and distance can not also be within above ranges, such as the thickness of diffuser plate 4 can also be small In 0.3mm, 0.3mm-0.5mm, 3mm-5mm or it is greater than 5mm；Similarly, the distance between diffuser plate 4 and reflector plate 3 can also be Less than 1mm, 1mm-2mm, 12mm-15mm or it is greater than 15mm, art technology person can be selected according to actual needs completely It selects, and will not be described here in detail.
Specifically, the diffuser plate 4 is semi-transparent semi-reflecting plate, and semi-transparent semi-reflecting plate can be improved light mixing effect, guarantees diffuser plate 4 Towards the side brightness uniformity of reflector plate 3, uniformly projected from diffuser plate 4 away from the side of reflector plate 3 to be conducive to light.
Further, several support columns 5 are connected between the reflector plate 3 and diffuser plate 4, several support columns 5 are transparent Support column or white support column.
Further, the position of two adjacent the first hot spot connections partly overlaps setting；Or two adjacent The position of two hot spots connection partly overlaps；Position or two second light of two first hot spots overlapping are arranged in several support columns 5 The position of spot overlapping；
Support column 5 can be improved the stability connected between reflector plate 3 and diffuser plate 4, while using transparent or white Support column so that support column 5 itself has preferable guide-lighting or reflecting effect, it is right after support column 5 is arranged to advantageously reduce Diffuser plate 4 is connected thereto the influence of the brightness of position, so that it is uniform away from the side of reflector plate 3 from diffuser plate 4 to be conducive to light It projects；It is several by the way that several support columns 5 are arranged in the position of the position that the first hot spot is overlapped or the overlapping of the second hot spot Dagger 5 is transparent support column or white support column, to reach the stability and the company that both can guarantee multiple light courcess back light module unit structure Intensity is connect, while using the effect of 5 weakened part of support column overlapping light, avoiding the first hot spot overlapping region or second The excessively high problem of 4 brightness of diffuser plate of hot spot overlapping region corresponding position, by support column 5 only by partly overlapping first hot spot Either/spread with the second hot spot or reflex to diffuser plate 4, it avoids being equipped with the position light mistake corresponding with support column 5 of diffuser plate 4 It is bright or excessively dark and the problem of influence local controlled light effect.
The embodiment of the invention also provides a kind of displays comprising such as preceding multiple light courcess backlight module.
As shown in FIG. 14 and 15, foregoing multiple light courcess backlight module is applied the embodiment of the invention also provides a kind of Local controlled light method, includes the following steps:
Input picture: the picture signal for being imaged by liquid crystal display panel is received；
Image zooming-out: carrying out data analysis to input picture, generates backlight value according to image classification and characteristic value；
It generates backlight subarea modulated signal: corresponding backlight modulation signal being generated according to backlight value, backlight modulation signal is extremely It less include backlight subarea modulated signal and backlight brightness modulation signal；
Backlight subarea is adjusted: backlight subarea modulated signal and backlight brightness modulation signal are fed back into backlight control module, Backlight subarea adjusting is carried out using backlight control module；
Backlight subarea adjusts and is adjusted according to preset backlight subarea unit backlighting requirements, and backlight subarea unit is default When: the region that first hot spot intersects with second hot spot on reflector plate 3 is defined as a backlight subarea unit, each First hot spot and the second hot spot include several backlight subarea units, and several first hot spots are crossed to form with several second hot spots Several backlight subarea units be covered with a side surface of the reflector plate 3 towards liquid crystal display panel, the corresponding liquid of each backlight subarea unit Several pixels in crystal panel；
According to corresponding backlight subarea signal, corresponding backlight subarea unit is determined, and then determine corresponding first hot spot Perhaps/and the second hot spot according to corresponding first hot spot or the second hot spot corresponding first light source component 1 of opening or/ With second light source component 2, illuminate after corresponding first light source component 1 or the unlatching of second light source component 2 according to backlight subarea The backlight subarea unit that signal determines, to realize local controlled light effect；
Backlight illumination is adjusted: according to corresponding backlight illumination signal, determine the brightness of corresponding each backlight subarea unit, into And determine corresponding first hot spot brightness perhaps/and the second hot spot brightness according to corresponding first hot spot brightness or second Hot spot brightness controls the brightness of corresponding first light source component 1 or second light source component 2, by backlight subarea unit brightness It is divided into low bright, normal and highlighted three ranks；
When corresponding backlight subarea brightness requirement be no more than it is normal when, open corresponding first light source component 1 or the Two light source assemblies 2, corresponding first light source component 1 are irradiated to the backlight subarea unit in the first hot spot formed on reflector plate 3 Correspondence (corresponds to the area with light image to be controlled on liquid crystal display for realizing the backlight subarea of local controlled light i.e. on reflector plate 3 Domain)；It is corresponded to alternatively, corresponding second light source component 2 is irradiated to the backlight subarea unit in the second hot spot formed on reflector plate 3 For realizing the backlight subarea (the corresponding region with light image to be controlled on liquid crystal display i.e. on reflector plate 3) of local controlled light；
When corresponding backlight subarea brightness requirement is highlighted, corresponding first light source component 1 and second light source component are opened 2, corresponding first light source component 1 is irradiated to the first hot spot formed on reflector plate 3 and second light source component 2 is irradiated to reflector plate The backlight subarea unit correspondence of the second hot spot overlapping region formed on 3 (reflects for realizing the backlight subarea of local controlled light The corresponding region with light image to be controlled on liquid crystal display on piece 3).
Pixel compensation: corresponding pixel compensation value or function are generated according to image classification and characteristic value, mended using pixel It repays system or control module and pixel compensation is carried out to liquid crystal display panel.
The control light Method And Principle base of local controlled light method provided in an embodiment of the present invention and existing straight-down negative LED display This is consistent, is all that local controlled light is realized by lighting backlight subarea corresponding with image, and difference is only that: existing LED Display screen realizes local controlled light function by lighting the corresponding LED light to light control region, and passes through in the embodiment of the present invention The first hot spot that control is formed with the first light source component 1 to light control region corresponding position or/and the formation of second light source component 2 The second hot spot realize local controlled light function, so when carrying out local controlled light to the backlight module that provides in the embodiment of the present invention, It can be using the backlight control system (including backlight control module and control program) of traditional straight-down negative LED display come real It is existing, it is only necessary to turn the control object of corresponding backlight control system (including backlight control module and control program) by LED light Turn to first light source component 1 or second light source component 2, and local controlled light method provided in an embodiment of the present invention In to image zooming-out and carry out pixel compensation when mode it is consistent with existing LED display, it is provided in an embodiment of the present invention in this way Backlight module just can compatible with existing straight-down negative LED display backlight control system (including backlight control module and Control program), to reduce the difficulty of implementation, fully ensure that the feasibility of its technology.
Also, since in the embodiment of the present invention, the first hot spot and the second light spot shape are relative in normal LED display The hot spot that generates of single led lamp it is more regular, and area coverage is larger, is considerably reduced object to be controlled (i.e. the in this way One light source assembly 1 and second light source component 2) quantity, while also allowing for the backlight module provided in the embodiment of the present invention In first light source component 1 and second light source component 2 control difficulty well below the LED lamp bead in traditional LED display Control difficulty, convenient for improve control program the speed of service and control efficiency；
Since in the embodiment of the present invention, backlight module uses the structure of side illuminaton, it uses similar straight in addition The local controlled light mode of following formula LED display, allows for backlight module provided in an embodiment of the present invention in this way and not only enters with side Formula display screen is convenient for doing its thickness into thin advantage as far as possible, that is, is easy to implement ultra-thin screen design；And it can be as straight-down negative LED Display screen equally realizes good local controlled light effect, so as to play the role of reducing power consumption and improve imaging results.
Specifically, further include following steps in the regulating step of backlight subarea:
It expands: laser beam expand to form the first light beam or the second light beam, and the first light beam edge formed It is greater than width perpendicular to the length in the section of its exit direction, or the second light beam formed is along perpendicular to its exit direction Section length be greater than width；
Side irradiation: the first light beam or the second light beam is allowed to irradiate from 3 side of reflector plate to reflector plate 3, the first light beam Or/and the second light beam projects direction and 3 surface of reflector plate and is arranged in angle, the first light beam is irradiated to the formation of reflector plate 3 first Hot spot, the length of the first hot spot are greater than the first light beam and close on 12 1 lateral edge of the first extender lens perpendicular to the section of its exit direction Length, and the area of the first hot spot be greater than the first light beam close on 12 1 lateral edge of the first extender lens perpendicular to its exit direction The area in section；Or second light beam be irradiated to reflector plate 3 and form the second hot spot, the length of the second hot spot is greater than the second light Beam closes on 22 1 lateral edge of the second extender lens perpendicular to the length in the section of its exit direction, and the area of the second hot spot is greater than the Two light beams close on 22 1 lateral edge of the second extender lens perpendicular to the area in the section of its exit direction, and backlight subarea unit is located at shape At the first hot spot or the second spot area in；
It is understood that when backlight subarea brightness requirement be no more than it is normal when, backlight subarea be predominantly located at one or When in a plurality of first spot area, the first light beam is allowed to irradiate from 3 one side of reflector plate to reflector plate 3, the first light beam projects direction It is arranged with 3 surface of reflector plate in angle, the first light beam is irradiated to reflector plate 3 and forms the first hot spot, and the length of the first hot spot is greater than First light beam closes on 12 1 lateral edge of the first extender lens perpendicular to the length in the section of its exit direction, and the area of the first hot spot 12 1 lateral edge of the first extender lens is closed on perpendicular to the area in the section of its exit direction, backlight subarea unit greater than the first light beam In the first spot area of formation；
Alternatively, backlight subarea is predominantly located at one or more of second when backlight subarea brightness requirement is no more than normal When in spot area, the first hot spot is allowed to irradiate from 3 one side of reflector plate to reflector plate 3, the first hot spot projects direction and reflector plate 3 Surface is arranged in angle, and the second light beam is irradiated to reflector plate 3 and forms the second hot spot, and the length of the second hot spot is greater than the second light beam and faces Nearly second extender lens, 22 1 lateral edge perpendicular to the section of its exit direction length, and the area of the second hot spot be greater than the second light Beam closes on 22 1 lateral edge of the second extender lens perpendicular to the area in the section of its exit direction, and backlight subarea unit, which is located at, to be formed In second spot area；
Alternatively, backlight subarea is predominantly located at one or more of first when backlight subarea brightness requirement is no more than normal When in the region that hot spot and the second hot spot are collectively formed, the first light beam is allowed to irradiate from 3 one side of reflector plate to reflector plate 3, first Light beam projects direction and 3 surface of reflector plate and is arranged in angle, and the first light beam is irradiated to reflector plate 3 and forms the first hot spot, the first light The length of spot is greater than the first light beam and closes on 12 1 lateral edge of the first extender lens perpendicular to the length in the section of its exit direction, and the The area of one hot spot is greater than the first light beam and closes on 12 1 lateral edge of the first extender lens perpendicular to the area in the section of its exit direction； Meanwhile the first hot spot being allowed to irradiate from 3 one side of reflector plate to reflector plate 3, the first hot spot projects direction and 3 surface of reflector plate in folder Angle setting, the second light beam are irradiated to reflector plate 3 and form the second hot spot, and the length of the second hot spot is greater than the second light beam and closes on the second expansion 22 1 lateral edge of beam lens is perpendicular to the length in the section of its exit direction, and the area of the second hot spot is greater than the second light beam and closes on the Two extender lenses, 22 1 lateral edge is perpendicular to the area in the section of its exit direction, and backlight subarea unit is positioned at the first hot spot formed In the second spot area；
Alternatively, when backlight subarea unit requires highlighted, backlight subarea be predominantly located at one or more of first hot spots and When in the region of the second hot spot intersection, the first light beam and the second light beam is allowed neither to be irradiated from reflector plate 3 with side to reflector plate 3, First light beam projects direction and 3 surface of reflector plate and is arranged in angle, and the first light beam is irradiated to reflector plate 3 and forms the first hot spot, the The length of one hot spot is greater than the first light beam and closes on 12 1 lateral edge of the first extender lens perpendicular to the length in the section of its exit direction, And first the area of hot spot be greater than the section that the first light beam closes on the first extender lens 12 1 lateral edge perpendicular to its exit direction Area；Meanwhile first hot spot project direction and 3 surface of reflector plate and be arranged in angle, the second light beam is irradiated to the formation of reflector plate 3 the Two hot spots, the length of the second hot spot are greater than the second light beam and close on 22 1 lateral edge of the second extender lens cutting perpendicular to its exit direction The length in face, and the area of the second hot spot is greater than the second light beam and closes on 22 1 lateral edge of the second extender lens perpendicular to its exit direction Section area, backlight subarea unit is located in the region of the first hot spot for being formed and the intersection of the second hot spot；Utilize the first light Spot intersects with the second hot spot to improve the brightness of corresponding backlight subarea；
Reflection and light mixing: the first hot spot or the second hot spot is allowed to be reflected towards the expansion of setting with interval by reflector plate 3 Fall apart 4, the part reflected light that reflector plate 3 reflects realizes light mixing, part reflected light and warp between reflector plate 3 and diffuser plate 4 It crosses the light being irradiated on diffuser plate 4 after light mixing and illuminates side and corresponding backlight subarea of the diffuser plate 4 towards reflector plate 3 jointly The corresponding position of unit；
Filtering and diffusion: the light for entering its inside using 4 pairs of diffuser plate is filtered and spreads；The reflection of reflector plate 3 Light part is projected after being directly over filtering and diffusion, and forms the first emergent ray；Light mixing, filtering and diffusion are passed through in other part After project, and formed the second emergent ray；First emergent ray and the second emergent ray collectively constitute entering for directive liquid crystal display panel The emergent ray of smooth surface and backlight subarea unit face position.
Multiple light courcess backlight module provided in an embodiment of the present invention, will by the first extender lens 12 of first light source component 1 Laser forms the first light beam after being expanded, several first light beams are irradiated from 3 side of reflector plate to reflector plate 3, several first light Several first hot spots that beam is formed after being irradiated on reflector plate 3 are covered with 3 surface of reflector plate, are advantageously ensured that on reflector plate 3 in this way With enough reflected lights；It simultaneously can be to several first light using several second hot spots that several second light source components 2 are formed Several first hot spots that source component is formed pointedly are enhanced, and to improve corresponding region on reflector plate 3, (i.e. backlight subarea is single Member) intensity of reflected light, form the plane of incidence for being pointed into liquid crystal display panel after the first hot spot and the second hot spot being reflected using reflector plate 3 Reflected light, by the further light mixing of reflected light, filtering and diffusion etc. operation after, so as to formed high brightness uniformly go out Light is penetrated, has the function that improve liquid crystal display panel corresponding region brightness of image；When needing to carry out local controlled light to liquid crystal display panel, First light source component 1 corresponding with the first hot spot to light control region can be only lighted, or/and is only lighted and to light control region The corresponding second light source component 2 of the second hot spot, and can select to sexually revise as needed with to light control region corresponding first The brightness of hot spot or the second hot spot further increases the effect of local controlled light, changes the first hot spot of corresponding position Brightness can be realized by improving the power of corresponding first laser transmitter 11, and can be reduced simultaneously except corresponding position The contrast effect of optical position and other positions is controlled in the brightness of first hot spot of other positions in addition to improve, and is reduced except corresponding position The brightness of first hot spot of the other positions set can by reduce corresponding position first laser transmitter 11 power or The brightness for being turned off changing to realize the second hot spot of corresponding position can be by improving corresponding second laser transmitter 21 Power realize that and the brightness that can reduce the first hot spot of other positions in addition to corresponding position simultaneously improves control The contrast effect of optical position and other positions, the brightness for reducing the first hot spot of the other positions except corresponding position can pass through drop The power of the first laser transmitter 21 of low corresponding position is turned off to realize, due to can be realized local controlled light, this Sample can not only reduce the power consumption of backlight module, and be conducive to improve the contrast and imaging results of image on liquid crystal display panel； Since the first light beam is from 3 side directive reflector plate 3 of reflector plate, first light source component and second light source component 2 are arranged at instead Penetrate 3 side of piece, i.e., the structure is side entering type, product thickness is advantageously reduced in this way, simultaneously because do not need using light guide plate, because And the problem of interiors of products device aging will not be caused, deform, influence product quality；And the mostly light that the invention provides The first laser transmitter 11 and second laser transmitter 21 of source backlight unit can be obtained directly by buying, and first The environment and technique that extender lens 12, the second extender lens 22 and 3 pairs of reflector plate make are required well below light guide plate, thus just In production and processing, reaching reduces production cost, while significantly improving the effect of properties of product.
The above is a preferred embodiment of the present invention, it is noted that for those skilled in the art For, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also considered as Protection scope of the present invention.

Claims (13)

1. a kind of multiple light courcess backlight module, which is characterized in that including several first light source components and a reflector plate, each described first Light source assembly includes first laser transmitter and the first extender lens that first laser transmitter side is arranged in, institute It is formed described in directive instead after stating laser beam expanding of first extender lens for projecting the corresponding first laser transmitter The first light beam of piece is penetrated, length of first light beam along the section perpendicular to its exit direction is greater than width, first light Beam irradiates to the reflector plate from the reflector plate side and forms the first hot spot on the reflector plate, first hot spot Length is greater than first light beam and closes on one lateral edge of the first extender lens perpendicular to the length in the section of its exit direction, and The area of first hot spot is greater than first light beam and closes on one lateral edge of the first extender lens perpendicular to its exit direction Section area, several first hot spots are covered with the reflector plate surface.
2. multiple light courcess backlight module according to claim 1, which is characterized in that several first light source component settings exist The same side of the reflector plate, several first light source components are irradiated to several first light obtained on the reflector plate Spot is sequentially connected；
Alternatively, the two opposite sides of the reflector plate are arranged in several first light source components, and two opposite sides is several described First light source component be symmetrical arranged, several first light source components of the same side be irradiated to obtained on the reflector plate it is several First hot spot is sequentially connected；
Alternatively, the two opposite sides of the reflector plate are arranged in several first light source components, and two opposite sides is several described First light source component shifts to install, and several first light source components of side are irradiated to several institutes formed on the reflector plate Several first light source components for stating the first hot spot and the other side irradiate several first light formed on the reflector plate Spot is cross-linked setting.
3. multiple light courcess backlight module according to claim 1 or 2, which is characterized in that further include several second light source groups Part, the first light source component and second light source component are separately positioned on two adjacent sides of the reflector plate, and each described second Light source assembly includes second laser transmitter and the second extender lens that second laser transmitter side is arranged in, institute It is formed described in directive instead after stating laser beam expanding of second extender lens for projecting the corresponding second laser transmitter The second light beam of piece is penetrated, length of second light beam along the section perpendicular to its exit direction is greater than width, second light Beam irradiates to the reflector plate from the reflector plate side and forms the second hot spot on the reflector plate, second hot spot Length is greater than second light beam and closes on one lateral edge of the second extender lens perpendicular to the length in the section of its exit direction, and The area of second hot spot is greater than second light beam and closes on one lateral edge of the second extender lens perpendicular to its exit direction Section area, several second hot spots intersect with several first hot spots.
4. multiple light courcess backlight module according to claim 3, which is characterized in that several second light source component settings exist The same side of the reflector plate, several second light source components are irradiated to several second light obtained on the reflector plate Spot is sequentially connected；
Alternatively, the two opposite sides of the reflector plate are arranged in several second light source components, and two opposite sides is several described Second light source component be symmetrical arranged, several second light source components of the same side be irradiated to obtained on the reflector plate it is several Second hot spot is sequentially connected；
Alternatively, the two opposite sides of the reflector plate are arranged in several second light source components, and two opposite sides is several described Second light source component shifts to install, and several second light source components of side are irradiated to several institutes formed on the reflector plate Several second light source components for stating the second hot spot and the other side irradiate several second light formed on the reflector plate Spot is cross-linked setting.
5. multiple light courcess backlight module according to claim 3, which is characterized in that the reflector plate side is equipped with for receiving The diffuser plate of the reflector plate reflection light, first light beam and the second light beam are after reflector plate reflection described in directive Diffuser plate, and projected from the diffuser plate away from the side of the reflector plate, it is spaced between the reflector plate and the diffuser plate Setting.
6. multiple light courcess backlight module according to claim 3, which is characterized in that first extender lens is that spherical surface is saturating Any one of mirror, free-form surface lens, ellipsoid lens；Second extender lens be spherical lens, free-form surface lens, Any one of ellipsoid lens.
7. multiple light courcess backlight module according to claim 3, which is characterized in that the reflector plate is plane reflection piece, ball Any one of face reflector plate, ellipsoid reflector plate, free form surface reflector plate.
8. multiple light courcess backlight module according to claim 5, which is characterized in that be equipped on the outside of the reflector plate and diffuser plate Several light barriers, the reflector plate, diffuser plate and several light barriers are enclosed a light mixing cavity.
9. multiple light courcess backlight module according to claim 5, which is characterized in that the diffuser plate is semi-transparent semi-reflecting plate, institute State diffuser plate with a thickness of 0.3mm-5mm, the distance between the diffuser plate and reflector plate are 1mm-15mm.
10. multiple light courcess backlight module according to claim 5, which is characterized in that connect between the reflector plate and diffuser plate Several support columns are connected to, several support columns are transparent support column or white support column；Two adjacent first hot spots The position of connection partly overlaps setting；Or two the position of adjacent second hot spot connection partly overlap；Several institutes It states support column and the position of the two first hot spot overlappings or the position of the two second hot spot overlappings is set.
11. a kind of display, which is characterized in that including the described in any item multiple light courcess backlight modules of claim 1~10.
12. a kind of local controlled light method using the described in any item multiple light courcess backlight modules of claim 1~11, feature exist In including the following steps:
Input picture: the picture signal for being imaged by liquid crystal display panel is received；
Image zooming-out: carrying out data analysis to input picture, generates backlight value according to image classification and characteristic value；
It generates backlight subarea modulated signal: according to the backlight value and then generating corresponding backlight modulation signal, the backlight tune Signal processed includes at least backlight subarea modulated signal；
Backlight subarea is adjusted: the backlight subarea modulated signal being fed back to backlight control module, utilizes the backlight control mould Block carries out backlight subarea adjusting；
Backlight subarea adjusts and is adjusted according to preset backlight subarea unit backlighting requirements, will when backlight subarea unit is preset The region that first hot spot intersects with second hot spot on the reflector plate is defined as a backlight subarea list Member, each first hot spot and the second hot spot include several described backlight subarea units, several first hot spots with Several backlight subarea units that several second hot spots are crossed to form are covered with the reflector plate one towards liquid crystal display panel Side surface, several pixels on the corresponding liquid crystal display panel of each backlight subarea unit；
According to the corresponding backlight subarea signal, the corresponding backlight subarea unit is determined, and then determine corresponding described First hot spot perhaps/and the second hot spot according to corresponding first hot spot or the second hot spot opening corresponding described the One light source assembly or second light source component；
Pixel compensation: according to image classification and characteristic value, pixel compensation is carried out to liquid crystal display panel.
13. local controlled light method according to claim 12, which is characterized in that in the backlight subarea regulating step also Include the following steps:
It expands: laser beam expand to form the first light beam or the second light beam, first light beam is along perpendicular to it The length in the section of exit direction is greater than width, and length of second light beam along the section perpendicular to its exit direction is greater than width Degree；
Side irradiation: first light beam or the second light beam is allowed to irradiate from the reflector plate side to the reflector plate, institute It states the first light beam or/and the second light beam projects direction and the reflector plate surface in angle setting, the first light beam irradiation The first hot spot is formed to the reflector plate, the length of first hot spot is closed on described first greater than first light beam and expanded One lateral edge of mirror perpendicular to the section of its exit direction length, and the area of first hot spot be greater than first light beam close on Area of first extender lens, one lateral edge perpendicular to the section of its exit direction；Or second light beam is irradiated to Reflector plate forms the second hot spot, and the length of second hot spot is greater than second light beam and closes on second extender lens side Length along the section perpendicular to its exit direction, and the area of second hot spot is greater than second light beam and closes on described the For two extender lenses, one lateral edge perpendicular to the area in the section of its exit direction, the backlight subarea unit is located at described the formed In one hot spot or the second spot area；
Reflection and light mixing: first hot spot or the second hot spot is allowed to be reflected towards setting with interval by the reflector plate The diffuser plate, the part reflected light that the reflector plate reflects realizes light mixing, portion between the reflector plate and diffuser plate Point reflected light and the light being irradiated on the diffuser plate after light mixing illuminate the diffuser plate towards the reflector plate jointly Side position corresponding with the backlight subarea unit；
Filtering and diffusion: the light for entering its inside is filtered and is spread using the diffuser plate；The reflector plate it is anti- Light-emitting parts point project after being directly over filtering and diffusion, and form the first emergent ray；Light mixing, filtering and expansion are passed through in other part It is projected after dissipating, and forms the second emergent ray；First emergent ray and the second emergent ray collectively constitute liquid described in directive The emergent ray of the incidence surface of crystal panel and the backlight subarea unit face position.
CN201910829221.2A 2019-09-03 2019-09-03 A kind of multiple light courcess backlight module, display and local controlled light method Pending CN110412796A (en)

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Application publication date: 20191105