CN103953875B - A kind of down straight aphototropism mode set and display unit - Google Patents
A kind of down straight aphototropism mode set and display unit Download PDFInfo
- Publication number
- CN103953875B CN103953875B CN201410158528.1A CN201410158528A CN103953875B CN 103953875 B CN103953875 B CN 103953875B CN 201410158528 A CN201410158528 A CN 201410158528A CN 103953875 B CN103953875 B CN 103953875B
- Authority
- CN
- China
- Prior art keywords
- support
- light
- lens
- mode set
- light source
- Prior art date
- Legal status (The legal status 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 status listed.)
- Active
Links
Landscapes
- Planar Illumination Modules (AREA)
Abstract
The embodiment of the present invention provides a kind of down straight aphototropism mode set and display unit, relate to Display Technique field, solved prior art in realizing backlight effect and stent support effect in, between spot center region and support top area, brightness value differs larger, the poor defect of light homogeneity of backlight, can improve the display effect of display unit. This down straight aphototropism mode set comprises backboard, light source, support, lens and optical module, described light source is arranged on described backboard, and described lens are arranged on described light source, described support is arranged on the exiting surface at described lens top, optical module described in the top braces of described support.
Description
Technical field
The present invention relates to Display Technique field, relate in particular to a kind of down straight aphototropism mode set and demonstrationDevice.
Background technology
Along with the development of Display Technique, the application of liquid crystal display in people's life moreCome more extensive. Liquid crystal display in liquid crystal display itself is non-luminous, shows effect in order to realizeFruit need to provide backlight to it, and in prior art, the backlight of liquid crystal display carried by backlight module conventionallyConfession, backlight module is divided into again according to the difference of light inlet mode: side-light backlight module and straight-down negativeBacklight module.
As shown in Figure 1, down straight aphototropism mode set structure of the prior art generally comprises relatively and establishesThe backboard 10 of putting and optical module 11, be arranged at support 12, light source 13 on backboard 10,Be arranged on the lens 14 on light source 13, the normal LED(that adopts is luminous for light source 13 of the prior artDiode) light source, support 12 is arranged between light source 13 and light source 13, for fear of propping upThe impact of frame on light, adopts transparent material to make support conventionally.
The inventor finds in enforcement prior art: the transparent material of support all has certainRefractive index, this causes light producing some deviations through in support, makes originally to penetrateLight to a top of the trellis can be to moving away from the direction of a top of the trellis, and this has just caused support topThe brightness in portion region is less than the brightness of neighboring area; Although adopted in prior art scheme thoroughlyMirror is dispersed the light of LED light source, and the exiting surface of lens is positioned at the top of lens, butAs shown in Figure 2, the light of dispersing out from lens still can form a hot spot 20, hot spot 20Central area brightness higher, therefore between the central area of hot spot and the top area of supportIt is larger that brightness value differs, and makes the light homogeneity of backlight poor, affects final display effect.
Summary of the invention
Embodiments of the invention provide a kind of down straight aphototropism mode set and display unit, by adoptingTechnical scheme in the present invention can be separated in realizing backlight effect and stent support effectCertainly in prior art, between spot center region and support top area, brightness value differs larger, the back of the bodyThe poor defect of light homogeneity of light source, can improve the display effect of display unit.
For achieving the above object, embodiments of the invention adopt following technical scheme:
Embodiments of the invention provide a kind of down straight aphototropism mode set, comprise backboard, light source,Frame, lens and optical module, described light source is arranged on described backboard, described lens settingOn described light source, described support is arranged on the exiting surface at described lens top, described supportTop braces described in optical module.
The side surface of described support is light reflection surface.
The bottom of described support is light tight portion.
The side surface of described support is elliptic curve in the cross section by support axis.
The side surface of described support is circular curve in the cross section by support axis.
Described support is cone.
The side surface of described support is hyperbola in the cross section by support axis, describedBetween the side surface of frame and the top of described support, it is rounding off.
The top of described support is curved surface.
Described light reflection surface is reflectance coating or reflector plate.
The embodiment of the present invention provides a kind of display unit, comprises liquid crystal panel and backlight module, instituteState liquid crystal panel and be fixed on described backlight module exiting surface, described backlight module is above-mentioned for havingThe down straight aphototropism mode set of arbitrary characteristics.
The embodiment of the present invention provides a kind of down straight aphototropism mode set and display unit, comprises backboard,Light source, support, lens and optical module, described light source is arranged on described backboard, described inLens are arranged on described light source, and described support is arranged on the exiting surface at described lens top,Optical module described in the top braces of described support. Because the light that LED light source sends is lambertDistribute, light is more concentrated directly over LED light source, so in LED light source sciopticsThe light that heart position is penetrated is higher than peripheral region, and these are from the light source of region, lens centre outgoingBe concentrated in the central area of hot spot, make the brightness in spot center region higher, in the present inventionIn down straight aphototropism mode set and display unit that technical scheme provides, by the exiting surface at lensThe support of upper setting, has stopped the light from the outgoing of lens exiting surface to spot center region originallyLine, this part light light path after a series of reflection and refraction changes and away from hot spotCentral area, thereby reduced the brightness in spot center region, and between lens and lensPosition support is not set, the brightness of the top area of former support can not be lowered, fromAnd improved the light homogeneity of backlight, make display unit have good display effect.
Brief description of the drawings
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, belowTo the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described, aobvious andEasily insight, the accompanying drawing in the following describes is only some embodiments of the present invention, for this areaThose of ordinary skill, is not paying under the prerequisite of creative work, can also be according to theseAccompanying drawing obtains other accompanying drawing.
Fig. 1 is down straight aphototropism mode set structural representation of the prior art;
Fig. 2 is light source hot spot schematic diagram of the prior art;
The down straight aphototropism mode set structural representation that Fig. 3 provides for the embodiment of the present invention;
The structural representation of the lens that Fig. 4 provides for the embodiment of the present invention;
The structural representation of the support that Fig. 5 provides for the embodiment of the present invention;
The lens that Fig. 6 provides for the embodiment of the present invention and the structural representation of holder combination;
The down straight aphototropism mode set light transmission schematic diagram one that Fig. 7 provides for the embodiment of the present invention;
The support axis schematic cross-section one excessively that Fig. 8 provides for the embodiment of the present invention;
The oval schematic diagram of the formation support that Fig. 9 provides for the embodiment of the present invention;
The not increase support simulation hot spot schematic diagram that Figure 10 provides for the embodiment of the present invention;
The increase support simulation hot spot schematic diagram one that Figure 11 provides for the embodiment of the present invention;
The support axis schematic cross-section two excessively that Figure 12 provides for the embodiment of the present invention;
Two round intersection signals of the formation support that Figure 13 provides for the embodiment of the present inventionFigure;
The increase support simulation hot spot schematic diagram two that Figure 14 provides for the embodiment of the present invention;
The support axis schematic cross-section three excessively that Figure 15 provides for the embodiment of the present invention;
The hyperbola schematic diagram of the formation support that Figure 16 provides for the embodiment of the present invention;
The increase support simulation hot spot schematic diagram three that Figure 17 provides for the embodiment of the present invention;
The down straight aphototropism mode set light transmission schematic diagram that Figure 18 provides for the embodiment of the present inventionTwo;
The down straight aphototropism mode set light transmission schematic diagram that Figure 19 provides for the embodiment of the present inventionThree;
The increase support simulation hot spot schematic diagram four that Figure 20 provides for the embodiment of the present invention.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, to the technical side in the embodiment of the present inventionCase is clearly and completely described, and obviously, described embodiment is only one of the present inventionDivide embodiment, instead of whole embodiment. Based on the embodiment in the present invention, this area is generalLogical technical staff is not making the every other embodiment obtaining under creative work prerequisite,All belong to the scope of protection of the invention.
Embodiment mono-
Embodiments of the invention provide a kind of down straight aphototropism mode set, as shown in Figure 3, comprise the back of the bodyPlate 30, light source 32, support 33, lens 34 and optical module 31, light source 32 is arranged onOn backboard 30, lens 34 are arranged on light source 32, and support 33 is arranged on going out of lens topOn light face 340, the top 331 support of optical assemblies 31 of support.
Wherein, optical module 31 comprises blooming piece and diffuser plate, support from top to bottom successivelyTop 331 inconsistent with support of optical assembly 31 with diffuser plate, describe for convenience in Fig. 3Marked.
Further, the side surface of support is light reflection surface.
Concrete, as shown in Figure 3, the side surface 332 of support is light reflection surface, to make photographBe mapped to the light reflection of the side surface 332 of support, the area of bottom 330 cross sections of support is largeIn the area of the top of support 331 cross sections.
Further, the bottom of support is light tight portion.
It should be noted that, the bottom 330 of support is that light tight portion can be by the bottom of supportBeing set to reflection layer, can be also that the bottom of support is set to light absorbing zone, can also beChoose opaque material and make support, to make the bottom of support light tight, the invention processExample is not done concrete restriction to this.
Wherein, as shown in Figure 4, lens 34 top concave surfaces are exiting surface to the structure of lens 34,Exiting surface can be free form surface; The structure of support 33 as shown in Figure 5; Lens 34 and supportAs shown in Figure 6, the bottom of support is connected with the exiting surface of lens the structure of 33 combinations,The bottom of frame can be by being adhesively fixed on lens, can be also that other mode is fixedOn lens, the embodiment of the present invention does not limit this.
Further, described light reflection surface is reflectance coating or reflector plate.
Concrete, the side surface of support is light reflection surface, this light reflection surface can be at supportOn side surface, applying reflectance coating, can be also that reflector plate is set, and can also be by the side of supportReflecting surface is directly made on surface, and the present embodiment does not limit this.
Concrete, for the light transmission that makes to stop through frame bottom is to optical module, conventionallyReflecting layer is set on backboard. As shown in Figure 7, light provides in the embodiment of the present invention straight underPropagation in formula backlight module, represents to propagate light with the line of arrow in figure, can from Fig. 7Find out, in the light by light source outgoing, a part can be from the light warp of region, lens centre outgoingThe stopping of bottom that crosses support is reflected, be transferred on reflecting layer 35, through reflecting layer 35After reflection, back into being mapped in lens 34, there is total reflection in the side of lens 34, finally fromOn the exiting surface of lens 34, reflect, in the time that light is irradiated to the side surface of support 33, processThe reflection of support 33 side surfaces departs from original direction, is finally irradiated on optical module 31;The light in another part directive spot center region is directly incident on lens from light source 33 sends34 side is also reflected, on the upper surface (being exiting surface) by lens 34, reflects,In the time that light is irradiated to the side surface of support 33, through the reflection of support 33 side surfaces, finalBe irradiated on optical module 31; In sum, because support stopped from region, lens centreThe light of outgoing, makes light through reflecting layer and the refraction of lens, reflection, then passes through bracket sideThe reflected illumination on surface, to optical module, has spread the light of light source outgoing, thereby has reduced lightThe brightness in the spot center region that the light of source outgoing forms, the side surface of described support is that light is anti-Penetrate face, the part of the effect simultaneously with reflection to directive spot center region in prior artLight reflects, and has further reduced the brightness in spot center region, has solved backlightThe poor problem of homogeneity, improved the display effect of display unit.
The side surface with light reflection surface of described support can will be radiated at hot spot inside originallyPart light reflection is to the periphery of hot spot, and then increased the area of hot spot, hot spot in embodimentThis point has well been described in the simulation drawing of effect, the hot spot that any two light sources produce itBetween the brightness in region be less than the brightness of spot area, facula area also can make when expansionThe brightness that obtains the region between two hot spots increases to some extent, can further improve like this light of backlightLine homogeneity, and then obtain better display effect.
It should be noted that, in figure, only provided the route of transmission of several exemplary light, itsThe propagation of its light can be with reference to above-mentioned explanation, and the present embodiment does not enumerate description at this.
In backlight module of the prior art in order to prevent that optical module from subsiding, need to backboard withAt least one supporting construction is set, in order not affect light in backlight module between optical modulePropagate and be conventionally set to transparent configuration, conventionally adopt transparent material to make support, but transparent materialMaterial all has certain refractive index, and this causes light inclined to one side through producing some in supportFolding, this makes directive originally prop up the light of top of the trellis can be to moving away from the direction of a top of the trellis,This has just caused the brightness of support top area to be less than the brightness of neighboring area, and the present invention is realExecuting example provides support in backlight module to be arranged on lens and is opaque structure, this supportCan support of optical assembly, in realizing supporting role, reduce spot center regionBrightness.
The embodiment of the present invention provides a kind of down straight aphototropism mode set, comprises backboard, light source, and support,Lens and optical module, described light source is arranged on described backboard, and described lens are arranged on instituteState on light source, described support is arranged on the exiting surface at described lens top, the top of described supportPortion supports described optical module. Because the light that LED light source sends is lambertian distribution, light existsMore concentrated directly over LED light source, so the ejaculation of LED light source scioptics centerLight is higher than peripheral region, and these light sources from the outgoing of region, lens centre are concentrated in hot spotCentral area, make the brightness in spot center region higher, provide in technical solution of the present inventionDown straight aphototropism mode set in, by the support arranging on the exiting surface of lens, stopped formerThis light from the outgoing of lens exiting surface to spot center region, this part light is through a series ofReflection and refraction after light path change and away from the central area of hot spot, thereby reduced lightThe brightness of spot central area, and position between lens and lens do not arrange support, makesThe brightness of the top area of former support can not be lowered, thereby has improved the light homogeneous of backlightProperty, make display unit have good display effect.
Embodiment bis-
Embodiments of the invention provide a kind of down straight aphototropism mode set, as shown in Figure 3, comprise the back of the bodyPlate 30, light source 32, support 33, lens 34 and optical module 31, light source 32 is arranged onOn backboard 30, lens 34 are arranged on light source 32, and support 33 is arranged on going out of lens topOn light face 340, the top 331 support of optical assemblies 31 of support.
Wherein, optical module 31 comprises blooming piece and diffuser plate, support from top to bottom successivelyTop 331 inconsistent with support of optical assembly 31 with diffuser plate, describe for convenience in Fig. 3Marked.
Further, the side surface of support is light reflection surface.
Concrete, as shown in Figure 3, the side surface 332 of support is light reflection surface, to make photographBe mapped to the light reflection of the side surface 332 of support, the area of bottom 330 cross sections of support is largeIn the area of the top of support 331 cross sections.
Further, the bottom of support is light tight portion.
It should be noted that, the bottom 330 of support is that light tight portion can be by the bottom of supportBeing set to reflection layer, can be also that the bottom of support is set to light absorbing zone, can also beChoose opaque material and make support, to make the bottom of support light tight, the invention processExample is not done concrete restriction to this.
In a kind of possible implementation, the side surface of described support is by support axisIn cross section, be elliptic curve.
Concrete, the side surface of described support at the sectional view by support axis as Fig. 8Shown in, the axis that in figure, dotted line is support, side surface is by the cross section of support axisBe elliptic curve 81. The top of this support is curved surface. Wherein, obtain the method for this support,As shown in Figure 9, get an ellipse, setting this oval semi-major axis is a, and semi-minor axis is b, figureThe heavy line part of middle ellipse is rotated around its major axis A B the structure forming for a weekFor support, the value of a is for being greater than 0 and be less than cavity thickness D; The value of b for be greater than 0 andBe less than lens place plane diameter of a circle r(as shown in Figure 4), cavity thickness D be backboard withVertical range (as shown in Figure 3) between optical module.
It should be noted that, heavy line part oval in Fig. 9 can be oval half, alsoCan be 1/3rd oval places, can also be other value, and the present embodiment does not limit this.
Exemplary, be 12mm if get oval semi-major axis long, semi-minor axis is long is 2.5mm, shouldOval around its semi-major axis formation support that rotates a circle, in the situation that other condition is constant, shouldSupport is arranged on lens, and the bottom of support is connected with the exiting surface of lens, passes through optical modeIntend software and simulate with the hot spot increasing after support not increasing support on lens, as Figure 10,Shown in Figure 11, in figure, the scale in left side is illuminance value (W/m2) corresponding with the light and shade of hot spotRelation, darkness deepens for hot spot from top to bottom, and corresponding illuminance value is increasing, right side in figureFor hot spot coordinate figure, the unit of X, Y coordinate is millimeters(millimeter), Tu10WeiSimulation hot spot figure while not increasing support, darkness deepens by export-oriented center for hot spot, hot spot by outsideIlluminance value to center is increasing, and in figure, central point illuminance is 4200, Figure 11 to the maximumFor increasing the simulation hot spot figure after support, in figure, central point illuminance is 1900, with not increaseWhen support, compare, increase by obtaining increasing the diameter of hot spot after support after optics software simulationLarge 100%, central point illumination is reduced to 1900 by the analogue value 4200. Can obtain according to analog resultKnow: spot center brightness value reduces, it is large that facula area becomes, because arrange after support on lensBe subject to stopping of support from the light of region, lens centre outgoing, through lens and bracket side surfaceRefraction, reflection spread, make the brightness of hot spot zones of different carried out again pointJoin, the light reflection surface on bracket side surface also carries out a part of light in directive spot center regionReflection, further reduced the brightness in spot center region, thus solved backlight allThe poor problem of one property.
For this support is arranged on to the backlight module on lens, light is in this backlight moduleThe direction of propagation can reference example one in Fig. 7 and the above-mentioned description for light transmission in Fig. 7,The present embodiment does not repeat them here.
Embodiment tri-
Embodiments of the invention provide a kind of down straight aphototropism mode set, as shown in Figure 3, comprise the back of the bodyPlate 30, light source 32, support 33, lens 34 and optical module 31, light source 32 is arranged onOn backboard 30, lens 34 are arranged on light source 32, and support 33 is arranged on going out of lens topOn light face 340, the top 331 support of optical assemblies 31 of support.
Wherein, optical module 31 comprises blooming piece and diffuser plate, support from top to bottom successivelyTop 331 inconsistent with support of optical assembly 31 with diffuser plate, describe for convenience in Fig. 3Marked.
Further, the side surface of support is light reflection surface.
Concrete, as shown in Figure 3, the side surface 332 of support is light reflection surface, to make photographBe mapped to the light reflection of the side surface 332 of support, the area of bottom 330 cross sections of support is largeIn the area of the top of support 331 cross sections.
Further, the bottom of support is light tight portion.
It should be noted that, the bottom 330 of support is that light tight portion can be by the bottom of supportBeing set to reflection layer, can be also that the bottom of support is set to light absorbing zone, can also beChoose opaque material and make support, to make the bottom of support light tight, the invention processExample is not done concrete restriction to this.
In a kind of possible implementation, the side surface of described support is by support axisIn cross section, be circular curve.
Concrete, the side surface of described support at the sectional view by support axis as Figure 12Shown in, the axis that in figure, dotted line is support, the side surface of described support is passing through support axisIn the cross section of line, be circular curve 121. The top of this support is curved surface. Wherein, obtain this supportMethod, as shown in figure 13, get the circles that two radiuses are identical and intersect, get solid that it intersectsLine part is rotated around the axle EF perpendicular to two circle center line connectings the structure obtaining for a weekFor this support. Suppose that two radius of a circles are R, as shown in Figure 3, straight-down negative module cavity thicknessFor D, the thickness of the mid portion of lens is d, and the span of d is less than D for being greater than 0,Frame bottom transverse cross section diameter of a circle is H, and H is the distance between KL in Figure 13, cavity thicknessD is the vertical range between backboard and optical module, and the span of H is less than for being greater than 0Mirror place plane diameter of a circle r(as shown in Figure 4).
According to right angled triangle MEI, the pass on its three limit is, ME2=EI2+MI2
Can draw:
Above formula is simplified and can be obtained:
From above formula, if the thickness D of cavity is changeless, R is about in lensBetween the function of thickness d, frame bottom cross section diameter of a circle H. If the thick middle of known lensDegree is d, and the frame bottom cross section diameter of a circle H needing, and can calculate R,Two round intersection rotations of getting this radius and be R can obtain support.
It should be noted that, in Figure 13, two crossing heavy line parts of circle can be two circlesIntersection 1/2nd places, can be also 1/3rd places of two round intersection, also canTo be other value, the present embodiment does not limit this.
Exemplary, to get the circle that two radiuses are 150mm and intersect, intersection intercepts width and is5mm, the length of KL is 5mm, gets crossing part and is rotated and obtains support, backlightUnder the immovable prerequisite of module cavity thickness and lens shape, this support is arranged on lens,The bottom of support is connected with lens exiting surface, by optical simulation software to do not increase support withThe hot spot increasing after support is simulated, and as shown in figure 14, in figure, the scale in left side is illuminationDegree value (W/m2) with the light and shade corresponding relation of hot spot, darkness deepens for hot spot from top to bottom, correspondenceIlluminance value increasing, in figure, right side is hot spot coordinate figure, the unit of X, Y coordinate isMillimeters(millimeter), in figure, central point illuminance is 3400, when not increasing supportThe hot spot of Figure 10 compares, by obtaining increasing the hot spot after support after optics software simulationDiameter increases 30%, and central point illuminance reduces by 3400 by the analogue value 4200. According to simulation knotFruit can be learnt: spot center brightness value reduces, and it is large that facula area becomes, because arrange on lensAfter support, be subject to stopping of support from the light of region, lens centre outgoing, through lens and supportRefraction, the reflection of side surface are spread, and the brightness of hot spot zones of different is weighedNew distribution, the light reflection surface on bracket side surface is a part of light to directive spot center region alsoLine reflects, and has further reduced the brightness in spot center region, thereby has solved backlightThe poor problem of homogeneity in source.
For this support is arranged on to the backlight module on lens, light is in this backlight moduleThe direction of propagation can reference example one in Fig. 7 and for the description of light transmission in Fig. 7, this realityExecuting example does not repeat them here.
The embodiment of the present invention provides a kind of down straight aphototropism mode set, comprises backboard, light source, and support,Lens and optical module, described light source is arranged on described backboard, and described lens are arranged on instituteState on light source, described support is arranged on the exiting surface at described lens top, the top of described supportPortion supports described optical module. Because the light that LED light source sends is lambertian distribution, light existsMore concentrated directly over LED light source, so the ejaculation of LED light source scioptics centerLight is higher than peripheral region, and these light sources from the outgoing of region, lens centre are concentrated in hot spotCentral area, make the brightness in spot center region higher, provide in technical solution of the present inventionDown straight aphototropism mode set in, by the support arranging on the exiting surface of lens, stopped formerThis light from the outgoing of lens exiting surface to spot center region, this part light is through a series ofReflection and refraction after light path change and away from the central area of hot spot, thereby reduced lightThe brightness of spot central area, and position between lens and lens do not arrange support, makesThe brightness of the top area of former support can not be lowered, thereby has improved the light homogeneous of backlightProperty, make display unit have good display effect.
Embodiment tetra-
Embodiments of the invention provide a kind of down straight aphototropism mode set, as shown in Figure 3, comprise the back of the bodyPlate 30, light source 32, support 33, lens 34 and optical module 31, light source 32 is arranged onOn backboard 30, lens 34 are arranged on light source 32, and support 33 is arranged on going out of lens topOn light face 340, the top 331 support of optical assemblies 31 of support.
Wherein, optical module 31 comprises blooming piece and diffuser plate, support from top to bottom successivelyTop 331 inconsistent with support of optical assembly 31 with diffuser plate, describe for convenience in Fig. 3Marked.
Further, the side surface of support is light reflection surface.
Concrete, as shown in Figure 3, the side surface 332 of support is light reflection surface, to make photographBe mapped to the light reflection of the side surface 332 of support, the area of bottom 330 cross sections of support is largeIn the area of the top of support 331 cross sections.
Further, the bottom of support is light tight portion.
It should be noted that, the bottom 330 of support is that light tight portion can be by the bottom of supportBeing set to reflection layer, can be also that the bottom of support is set to light absorbing zone, can also beChoose opaque material and make support, to make the bottom of support light tight, the invention processExample is not done concrete restriction to this.
In a kind of possible implementation, the side surface of described support is by support axisIn cross section, be hyperbola.
Concrete, the side surface of described support at the sectional view by support axis as Figure 15Shown in, the axis that in figure, dotted line is support, side surface is by the cross section of support axisBe hyperbola 151. It between the side surface of this support and top, is rounding off. Wherein, obtainThe method of this support, as shown in figure 16, in hyperbola, heavy line part is entered around rotating shaft GHThe structure that row rotation obtains is support. The value of the cross-sectional diameter of the bottom of support is greater than 0And be less than lens place plane diameter of a circle r(as shown in Figure 4), the height of support is for being greater thanThe 0 cavity thickness D(that is less than module as shown in Figure 3).
It should be noted that, in Figure 16, hyp heavy line part can be hyp oneHalf, can be also hyp 1/3rd places, can also be other value, the present embodiment is to thisDo not limit.
Exemplary, if hyperbola isThis hyperbola is entered around rotating shaft GHThe structure that row rotation obtains is support, at backlight module cavity thickness and lens shape notUnder the prerequisite changing, this support is arranged on lens to the bottom of support and lens exiting surface phaseConnect, carry out mould to not increasing support with the hot spot increasing after support by optical simulation softwareIntend, as shown in figure 17, in figure, the scale in left side is illuminance value (W/m2) bright with hot spotDark corresponding relation, darkness deepens for hot spot from top to bottom, and corresponding illuminance value is increasing, figureMiddle right side is hot spot coordinate figure, and the unit of X, Y coordinate is millimeters(millimeter), figureMiddle central point illuminance is 3200, and the hot spot of Figure 10 compares when not increasing support, logicalCross the diameter that obtains hot spot after optics software simulation and increase 30%, central point illumination is by the analogue value4200 are reduced to 3200. Can learn according to analog result: spot center brightness value reduces, lightIt is large that spot area becomes, because be subject to from the light of region, lens centre outgoing after support is set on lensTo stopping of support, spread through refraction, the reflection on lens and bracket side surface, makeDistribution has again been carried out in the brightness that obtains hot spot zones of different, and the light reflection surface on bracket side surface alsoA part of light to directive spot center region reflects, and has further reduced in hot spotThe brightness in heart region, thus the poor problem of homogeneity of backlight solved.
Concrete, for the light transmission that makes to stop through frame bottom is to optical module, conventionallyReflecting layer is set on backboard. As shown in figure 18, in figure, represent to propagate light with the line of arrow,As can be seen from Figure 18,, in the light by light source outgoing, a part can be from lens centre districtThe light of territory outgoing was reflected through the stopping of bottom of support, is transferred on reflecting layer 35,After the reflection in reflecting layer 35, back into being mapped in lens 34, send out in the side of lens 34Raw total reflection, finally reflects from the upper surface of lens 34, when light is irradiated to support 33Side surface time, depart from original direction through the reflection of support 33 side surfaces, finally irradiateTo optical module 31; The light in another part directive spot center region sends from light source 33After be directly incident on lens 34 side and reflect, on the upper surface by lens 34, reflectGo out, in the time that light is irradiated to the side surface of support 33, through the reflection of support 33 side surfaces,Finally be irradiated on optical module 31; In sum, light when thering is no supportOutgoing has larger shooting angle, because support has stopped from the light of region, lens centre outgoingLine, makes light through reflecting layer and the refraction of lens, reflection, then passes through the anti-of bracket side surfacePenetrate and expose to optical module, spread the light of light source outgoing, thereby reduced light source outgoingThe brightness in the spot center region that light forms, the light reflection surface on bracket side surface is also to directive lightA part of light of spot central area reflects, and further reduced spot center regionBrightness, has solved the poor problem of homogeneity of backlight, the demonstration that can improve display unitEffect.
It should be noted that, in figure, only provided the route of transmission of several exemplary light, itsThe propagation of its light can be with reference to above-mentioned explanation, and the present embodiment will not enumerate and retouches at thisState.
It should be noted that, the side surface of described support can in the cross section by support axisThinking elliptic curve, circular curve or hyperbola, can be also free form surface.
The embodiment of the present invention provides a kind of down straight aphototropism mode set, comprises backboard, light source, and support,Lens and optical module, described light source is arranged on described backboard, and described lens are arranged on instituteState on light source, described support is arranged on the exiting surface at described lens top, the top of described supportPortion supports described optical module. Because the light that LED light source sends is lambertian distribution, light existsMore concentrated directly over LED light source, so the ejaculation of LED light source scioptics centerLight is higher than peripheral region, and these light sources from the outgoing of region, lens centre are concentrated in hot spotCentral area, make the brightness in spot center region higher, provide in technical solution of the present inventionDown straight aphototropism mode set in, by the support arranging on the exiting surface of lens, stopped formerThis light from the outgoing of lens exiting surface to spot center region, this part light is through a series ofReflection and refraction after light path change and away from the central area of hot spot, thereby reduced lightThe brightness of spot central area, and position between lens and lens do not arrange support, makesThe brightness of the top area of former support can not be lowered, thereby has improved the light homogeneous of backlightProperty, make display unit have good display effect.
Embodiment five
Embodiments of the invention provide a kind of down straight aphototropism mode set, as shown in Figure 3, comprise the back of the bodyPlate 30, light source 32, support 33, lens 34 and optical module 31, light source 32 is arranged onOn backboard 30, lens 34 are arranged on light source 32, and support 33 is arranged on going out of lens topOn light face 340, the top 331 support of optical assemblies 31 of support.
Wherein, optical module 31 comprises blooming piece and diffuser plate, support from top to bottom successivelyTop 331 inconsistent with support of optical assembly 31 with diffuser plate, describe for convenience in Fig. 3Marked.
Further, the side surface of support is light reflection surface.
Concrete, as shown in Figure 3, the side surface 332 of support is light reflection surface, to make photographBe mapped to the light reflection of the side surface 332 of support, the area of bottom 330 cross sections of support is largeIn the area of the top of support 331 cross sections.
Further, the bottom of support is light tight portion.
It should be noted that, the bottom 330 of support is that light tight portion can be by the bottom of supportBeing set to reflection layer, can be also that the bottom of support is set to light absorbing zone, can also beChoose opaque material and make support, to make the bottom of support light tight, the invention processExample is not done concrete restriction to this.
In a kind of possible implementation, described support is cone.
Concrete, if support is cone, the top of this cone support is curved surface. In order to makeThe light transmission that must stop through frame bottom, to optical module, arranges reflection conventionally on backboardLayer. As shown in figure 19, the propagation in the down straight aphototropism mode set that light provides at the present embodiment,In figure, represent to propagate light with the line of arrow, as can be seen from Figure 19, by light source outgoingIn light, a part can stopping from the bottom of the light process support of region, lens centre outgoingBe reflected, be transferred on reflecting layer 35, after the reflection in reflecting layer 35 back into being mapped toIn mirror 34, there is total reflection in the side of lens 34, final from the upper surface of lens 34Reflect, in the time that light is irradiated to the side surface of support 33, pass through the anti-of support 33 side surfacesPenetrate and depart from original direction, be finally irradiated on optical module 31; Another part directive hot spotThe light of central area is directly incident on the side of lens 34 and occurs anti-from light source 33 sendsPenetrate, on the upper surface by lens 34, reflect, in the time that light is irradiated to the side surface of support 33,Through the reflection of support 33 side surfaces, be finally irradiated on optical module 31; In sum,Because support stopped from the light of region, lens centre outgoing, make light through reflecting layer and thoroughlyThe refraction of mirror, reflection, then the reflected illumination of passing through bracket side surface is to optical module, has spreadThe light of light source outgoing, thus the spot center region that the light of light source outgoing forms reducedBrightness, the light reflection surface on bracket side surface also enters a part of light in directive spot center regionGo reflection, further reduced the brightness in spot center region, solved the homogeneous of backlightThe problem that property is poor, can improve the display effect of display unit.
It should be noted that, in figure, only provided the route of transmission of several exemplary light, itsThe propagation of its light can be with reference to above-mentioned explanation, and the present embodiment will not enumerate and retouches at thisState.
Exemplary, if taper cone angle is 10 °, in backlight module cavity thickness and lens shapedUnder the immovable prerequisite of shape, this cone support is arranged on lens, the bottom of support is with saturatingMirror exiting surface is connected, by optical simulation software to not increasing support and the light increasing after supportSpot is simulated, and as shown in figure 20, in figure, the scale in left side is illuminance value (W/m2) withThe light and shade corresponding relation of hot spot, darkness deepens for hot spot from top to bottom, and corresponding illuminance value is more nextLarger, in figure, right side is hot spot coordinate figure, and the unit of X, Y coordinate is millimeters(milliRice), in figure, central point illuminance is 1900, the hot spot of Figure 10 carries out when not increasing supportRelatively, it is large that the diameter of hot spot becomes, and central point illumination has the analogue value to reduce. Can according to analog resultLearn: spot center brightness value reduces, it is large that facula area becomes, because support is set on lensAfter be subject to stopping of support from the light of region, lens centre outgoing, through lens and bracket side tableThe refraction of face, reflection are spread, and the brightness of hot spot zones of different has been carried out againDistribute, the light reflection surface on bracket side surface also enters a part of light in directive spot center regionGo reflection, further reduced the brightness in spot center region, thereby solved backlightThe problem that homogeneity is poor.
The embodiment of the present invention provides a kind of down straight aphototropism mode set, comprises backboard, light source, and support,Lens and optical module, described light source is arranged on described backboard, and described lens are arranged on instituteState on light source, described support is arranged on the exiting surface at described lens top, the top of described supportPortion supports described optical module. Because the light that LED light source sends is lambertian distribution, light existsMore concentrated directly over LED light source, so the ejaculation of LED light source scioptics centerLight is higher than peripheral region, and these light sources from the outgoing of region, lens centre are concentrated in hot spotCentral area, make the brightness in spot center region higher, provide in technical solution of the present inventionDown straight aphototropism mode set in, by the support arranging on the exiting surface of lens, stopped formerThis light from the outgoing of lens exiting surface to spot center region, this part light is through a series ofReflection and refraction after light path change and away from the central area of hot spot, thereby reduced lightThe brightness of spot central area, and position between lens and lens do not arrange support, makesThe brightness of the top area of former support can not be lowered, thereby has improved the light homogeneous of backlightProperty, make display unit have good display effect.
Embodiment six
The embodiment of the present invention provides a kind of display unit, comprises liquid crystal panel and backlight module, instituteState liquid crystal panel and be fixed on described backlight module exiting surface, described backlight module is above-mentioned for havingThe down straight aphototropism mode set of arbitrary characteristics.
The display unit that the embodiment of the present invention provides can be liquid crystal display, LCD TV, numberCode photo frame, mobile phone, panel computer etc. have the product of Presentation Function or other, and the present invention is realExecuting example does not limit.
The display unit providing based on the embodiment of the present invention, by the center of the exiting surface at lensPosition arranges support, has stopped the light from the outgoing of lens exiting surface to spot center region originallyLine, this part light is understood the central area away from hot spot after a series of reflection and refraction,Thereby reduce the brightness in spot center region, improved the light homogeneity of backlight, made to showShowing device has good display effect.
The above be only the specific embodiment of the present invention, but protection scope of the present invention alsoBe not limited to this, any be familiar with those skilled in the art the present invention disclose technology modelIn enclosing, can expect easily changing or replacing, within all should being encompassed in protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of described claim.
Claims (8)
1. a down straight aphototropism mode set, comprises backboard, light source, support, lens and opticsAssembly, described light source is arranged on described backboard, and described lens are arranged on described light source, itsBe characterised in that, described support is arranged on the exiting surface at described lens top, the top of described supportPortion supports described optical module, and the side surface of described support is light reflection surface, the end of described supportPortion is light tight portion.
2. down straight aphototropism mode set according to claim 1, is characterized in that, describedThe side surface of frame is elliptic curve in the cross section by support axis.
3. down straight aphototropism mode set according to claim 1, is characterized in that, describedThe side surface of frame is circular curve in the cross section by support axis.
4. down straight aphototropism mode set according to claim 1, is characterized in that, describedFrame is cone.
5. down straight aphototropism mode set according to claim 1, is characterized in that, describedThe side surface of frame is hyperbola in the cross section by support axis, the side surface of described supportAnd between the top of described support, be rounding off.
6. according to the down straight aphototropism mode set described in claim 2-4 any one, it is characterized in that,The top of described support is curved surface.
7. down straight aphototropism mode set according to claim 1, is characterized in that, described lightReflecting surface is reflectance coating or reflector plate.
8. a display unit, comprises liquid crystal panel and backlight module, and described liquid crystal panel is fixedOn described backlight module exiting surface, it is characterized in that, described backlight module is claim 1-7Down straight aphototropism mode set described in any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410158528.1A CN103953875B (en) | 2014-04-18 | 2014-04-18 | A kind of down straight aphototropism mode set and display unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410158528.1A CN103953875B (en) | 2014-04-18 | 2014-04-18 | A kind of down straight aphototropism mode set and display unit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103953875A CN103953875A (en) | 2014-07-30 |
| CN103953875B true CN103953875B (en) | 2016-05-11 |
Family
ID=51331187
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410158528.1A Active CN103953875B (en) | 2014-04-18 | 2014-04-18 | A kind of down straight aphototropism mode set and display unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103953875B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109163227B (en) * | 2018-08-31 | 2021-05-28 | 惠州市华星光电技术有限公司 | Direct type backlight module and light emitting diode array |
| CN110111681A (en) * | 2019-04-08 | 2019-08-09 | 惠州市华星光电技术有限公司 | Backlight module preparation method and system |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006310640A (en) * | 2005-04-28 | 2006-11-09 | Sony Corp | Light emitting diode, backlight device, and liquid crystal display device |
| CN201054060Y (en) * | 2007-05-14 | 2008-04-30 | 中华映管股份有限公司 | Backlight module |
| CN101393349B (en) * | 2007-09-21 | 2011-12-21 | 群康科技(深圳)有限公司 | Directly-down back light module unit and LCD device |
| CN102472447A (en) * | 2009-07-21 | 2012-05-23 | 夏普株式会社 | Lens unit, light emitting module, illumination device, display device, and television receiving device |
| US8908123B2 (en) * | 2012-04-16 | 2014-12-09 | Shenzhen China Star Optoelectronics Technology Co., Ltd. | Direct-light type backlight module and liquid crystal display |
-
2014
- 2014-04-18 CN CN201410158528.1A patent/CN103953875B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN103953875A (en) | 2014-07-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20140168999A1 (en) | Optical Lens | |
| CN104317100B (en) | Luminescent device and backlight source | |
| CN203907479U (en) | LED lens with straight-down type backlight module | |
| CN103148449B (en) | LED (light emitting diode) lens with direct-lit type liquid crystal backlight | |
| CN103163576A (en) | Light-emitting diode lens and light-emitting device thereof | |
| WO2019161629A1 (en) | Backlight module and display device | |
| CN103062707A (en) | Light-emitting diode lens and light source device thereof | |
| CN203052397U (en) | Straight-down type backlight module, liquid crystal module and liquid crystal displaying device | |
| CN203784831U (en) | Novel reflective lens | |
| CN103912820B (en) | Light-emitting device and its relevant display system | |
| CN105572967A (en) | Lens, light emitting apparatus including the lens, and backlight unit including the apparatus | |
| CN102798908A (en) | Diffuser plate, direct-type backlight module and display device | |
| CN107092133A (en) | A kind of straight-down negative LED light source component, backlight module and display panel | |
| CN103953875B (en) | A kind of down straight aphototropism mode set and display unit | |
| CN106019430A (en) | Nanometer peep-proof film and display apparatus | |
| CN103822139A (en) | Backlight source module and display device | |
| CN103995311A (en) | Light guide plate, backlight module and display device | |
| CN103148417B (en) | LED (light emitting diode) backlight module for direct-lit type liquid crystal backlight | |
| CN104316984B (en) | A kind of non-sym lens | |
| KR100380855B1 (en) | A Backlight System for Liquid Crystal Display Devices | |
| CN103234172B (en) | Diffusion plate structure and application thereof in backlight module | |
| CN202629915U (en) | Secondary lens with bottom surface in curved surface structure | |
| CN202992930U (en) | Backlight module and liquid crystal display device | |
| CN104090423A (en) | Transparent display device | |
| CN202256735U (en) | Composite structure brightness enhancing film |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 266100 Zhuzhou Road, Laoshan District, Shandong, No. 151, No. Patentee after: Hisense Video Technology Co.,Ltd. Address before: 266100 Zhuzhou Road, Laoshan District, Shandong, No. 151, No. Patentee before: HISENSE ELECTRIC Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder |