CN102566139B - LED (Light-Emitting Diode) backlight display equipment - Google Patents
LED (Light-Emitting Diode) backlight display equipment Download PDFInfo
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- CN102566139B CN102566139B CN201010609610.3A CN201010609610A CN102566139B CN 102566139 B CN102566139 B CN 102566139B CN 201010609610 A CN201010609610 A CN 201010609610A CN 102566139 B CN102566139 B CN 102566139B
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Abstract
The invention provides LED (Light-Emitting Diode) backlight display equipment which comprises LED light emitting units, a light guide plate, a reflector, a diffuser, a liquid crystal display screen and a frame, wherein the LED light emitting units are used for providing a backlight source for the display equipment; the frame is used for accommodating and fixing the LED light emitting units, the light guide plate, the reflector, the diffuser and the liquid crystal display screen; an LED light bar is formed by a plurality of LED light emitting units; the frame is of a spliced structure; and a groove for accommodating the LED light bar is formed at the spliced position. Due to the utilization of the LED backlight display equipment, the weight and the thickness of the integral display equipment can be reduced; the using amount of LEDs is reduced; due to the adoption of the frame structure in a spliced mode, the display equipment can be ensured to be made into any size; and an LED light source is embedded at the spliced position, so that the aim of improving the brightness of backlight and the contrast ratio of a display by utilizing a regional control mode is fulfilled.
Description
Technical field
The present invention relates to LED backlight display technique field, more specifically, relate to a kind of spliced LED backlight display device.
Background technology
Along with the progress of society and the development of technology, the features such as the display device of LED (light-emittingdiode Light Emitting Diode) backlight is high with its reliability, long service life, adaptive capacity to environment are strong, cost performance is reasonable, use cost is low substitute the main product that the display device of traditional C CFL (cathode fluorescent tube Cold CathodeFluorescent Lamp) backlight becomes rapidly large flat display gradually, are widely used in field of information display.Huge market demand impels liquid crystal panel manufacturer and national governments activity investments to set up the LED product production line of a new generation, in this case, meets 55 inches and following liquid crystal panel 8.5 generation production line is built like the mushrooms after rain.When various countries actively build 8.5 generation lines, with leading panel vendors such as Korea S's Samsung and Japanese Sharps, positive to higher line generation especially---the 10 generations line investment of the application such as 65 inches and above HDTV, exhibition room display and billboard can be met.
55 inches of traditional LED backlight and the backing structure of following display device generally have following two kinds:
1, downward back photo structure
Fig. 1 is the principle of luminosity schematic diagram of downward back light device in conventional art, as shown in Figure 1, light sends from the array be made up of LED1, in order to reach the object of uniform area light source, in conjunction with LED self luminous characteristics, a diffuser plate 27 need be increased again above the air layer d of LED array certain distance.Although LED array can make infinity in principle, but due to the existence of air layer d, increase the thickness of whole display undoubtedly, simultaneously because this class display needs a large number of LED to support, too increase the energy consumption of display from another point of view, be unfavorable for the reduction of display use cost, therefore this backing structure cannot make superhuge display device.
2, side entrance back structure
Fig. 2 is the principle of luminosity schematic diagram of side entrance back equipment in conventional art, and as shown in Figure 2, light, from the lamp bar injection be made up of LED1, through light guide plate 28, forms uniform area source.But because current LED luminance scope limit, light guide plate width l also must be restricted as shown in Figure 3, and because this type of design LED luminescence unit 100 is positioned at the periphery of display, therefore be difficult to the dynamic contrast fundamentally improving whole display, thus make this backing structure cannot make superhuge display device equally.
Thus, need to design a kind of LED and can accomplish 65 inches of even larger display devices as backlight, size, and establish the performance requirement making this display device meet low cost, low energy consumption, high brightness and contrast.
Summary of the invention
In view of the above problems, the object of this invention is to provide a kind of LED backlight display device, comprise for display device provides the LED luminescence unit of back light, light guide plate, reflector plate, diffusion sheet, LCDs and accommodation to fix the framework of above-mentioned each optical component, wherein, multiple described LED luminescence unit composition LED lamp bar, described framework is splicing construction, and forms the groove holding described LED lamp bar in described stitching portion.
Wherein, preferred structure is, described LED luminescence unit comprises the aluminium base being provided with P.e.c., LED package unit and the secondary lens that combine from bottom to top.
In addition, preferred structure is, the aluminium base that multiple LED package unit is welded on a strip forms described LED lamp bar, each LED package unit respectively correspondence in conjunction with an independently secondary lens.
Moreover preferred structure is, the aluminium base that multiple described LED package unit is welded on a strip forms described LED lamp bar; Described secondary lens is the lens bar corresponding with described LED lamp bar, and all LED package unit of described lens bar in described LED lamp bar are combined.
Moreover preferred structure is, described framework comprises the chassis with splicing construction;
Described chassis comprises chassis, at least two edges and at least one middle chassis, and stitching portion, described chassis forms the embedding groove of described LED lamp bar.
Moreover preferred structure is, described chassis comprises chassis, at least four edges, at least four middle chassis and at least one central chassis, and stitching portion, described chassis forms the embedding groove of described LED lamp bar.
Beneficial effect of the present invention is:
1, Embedded LED luminescence unit overcomes the air layer thickness between general direct-type backlight LED and diffuser plate, makes whole display device lighter and thin;
2, embedded LED luminescence unit is compared with direct-type backlight, decreases the use amount of LED, thus reduces energy consumption, has saved cost;
3, the embedded LED luminescence unit of Region control can be carried out, effectively can improve the contrast of display device, also can overcome the low feature of general side entering type display device brightness simultaneously;
4, the embedded LED luminescence unit of Region control can be carried out, can ensure that display device is made any large scale and do not reduce the brightness of backlight;
5, chassis is divided into edge metal chassis, intermetallic metal chassis and central metal chassis, and chassis can be spliced arbitrarily according to the needs of actual displayed device product, thus provides safeguard for any large scale made by whole display device.
Utilize technique scheme provided by the invention, display device can be accomplished infinity, ultra-thin in theory, and LED backlight display device brightness constructed in accordance is high, cost is low, dynamic contrast to, energy-conservation, the present invention adopts LED as backlight, go for 65 inches and above liquid crystal display, the display device that HDTV, showroom display and billboard etc. need high definition, giant-screen can be widely used in.
In order to realize above-mentioned and relevant object, will describe in detail and the feature particularly pointed out in the claims after one or more aspect of the present invention comprises.Explanation below and accompanying drawing describe some illustrative aspects of the present invention in detail.But what these aspects indicated is only some modes that can use in the various modes of principle of the present invention.In addition, the present invention is intended to comprise all these aspects and their equivalent.
Accompanying drawing explanation
By reference to the content below in conjunction with the description of the drawings and claims, and understand more comprehensively along with to of the present invention, other object of the present invention and result will be understood and easy to understand more.In the accompanying drawings:
Fig. 1 is conventional art downward back light device schematic diagram;
Fig. 2 is conventional art side entrance back equipment schematic diagram;
Fig. 3 is the concrete structure schematic diagram of LED backlight display device of the present invention;
Fig. 4 is the LED luminescence unit schematic diagram of LED of the present invention and lens and aluminium base composition;
Fig. 5 is the side view of the LED lamp bar that LED luminescence unit of the present invention combination is formed;
Fig. 6 is backlight package chassis of the present invention schematic diagram;
Fig. 7 is that backlight chassis connecting method of the present invention and LED embed schematic diagram;
Fig. 8 is LED embodiment two schematic diagram of the present invention;
Fig. 9 a and Fig. 9 b is the splicing embodiment schematic diagram of metal chassis of the present invention respectively;
Figure 10 is the another splicing embodiment schematic diagram of metal chassis of the present invention;
Figure 11 is backlight package schematic diagram of the present invention;
Figure 12 is diffusion sheet of the present invention printing embodiment schematic diagram.
Label identical in all of the figs indicates similar or corresponding feature or function.
Embodiment
Below with reference to accompanying drawing, specific embodiments of the invention are described in detail.
Fig. 3 is the concrete structure schematic diagram of LED backlight display device of the present invention, as shown in Figure 3, LED backlight display device provided by the invention comprises for display device provides the LED luminescence unit 100 of back light, light guide plate 7, reflector plate 9, diffusion sheet 10, prismatic lens 12, brightening piece 13, LCDs 15 and accommodation to fix the framework of above-mentioned each optical component.
Wherein LED luminescence unit 100 embeds in the groove of base of frame, and each LED luminescence unit comprises the aluminium base 2, LED package unit 110 and the secondary lens 6 that combine from bottom to top; LED package unit 110 comprises the packaging plastic 18 of LED light source 1 and this LED light source of encapsulation.
The light that LED light source 1 sends enters secondary lens 6 after packaging plastic 18, and enter light guide plate 7 after the reflection of a part via the upper surface of the secondary lens 6 relative with LED light source 1, a part directly goes out to inject diffusion sheet 10 from the upper surface of secondary lens 6.Light transmits in light guide plate 7, after running into the site 8 be arranged on bottom light guide plate 7, form scattering; Through the part of the light of site 8 scattering from the upper surface of light guide plate 7 and the light guide plate 7 one side outgoing relative with face, place, site 8, a part of light resumes defeated at light guide plate 7 relaying, until scattering again after again encountering site 8; When the incident angle of light directive light guide plate 7 upper surface after scattering is less than the angle of total reflection, light is from the upper surface outgoing of light guide plate 7.From the light of light guide plate 7 lower surface injection, enter light guide plate 7 after reflecting via the reflector plate 9 being arranged on light guide plate 7 bottom and again utilize, light guide plate 7 is carried by reflector plate 9.After light penetrates from light guide plate 7, enter diffusion sheet 10, light, after diffusion sheet 10 outgoing, namely defines the area source providing uniform source of light to LCDs 15.
Because light exists relaxation phenomenon in optical component transmitting procedure, therefore in a preferred embodiment of the present invention, in order to make as LCDs 15 provides the whole area source stable homogeneous of backlight, make LCDs 15 display frame more homogeneous soft, correspond to above LED luminescence unit 100 at diffusion sheet 10 and do grey printing (in Fig. 3 position shown in 11), this makes it possible to weaken and transmit and the direct brightness injecting this part light of diffusion sheet 10 from secondary lens 6 without light guide plate 7, the brightness that this part light is finally penetrated from diffusion sheet 10 is suitable with the brightness transmitting the light penetrated from diffusion sheet 10 again through light guide plate 7, thus reach the object of the area source stable homogeneous making finally to be supplied to LCDs 15.
In addition, the light sent to make LED light source 1 can more intensively directive LCDs 15 through packaging plastic 18, secondary lens 6, light guide plate 7 and diffusion sheet 10, prismatic lens 12 is also provided with, directive LCDs 15 again after concentrating in order to the light that penetrated by diffusion sheet 10 between diffusion sheet 10 and LCDs 15.Further, in order to improve the utilization factor of light, the brightening piece 13 with the two-way utilization of P, S is also provided with between prismatic lens 12 and LCDs 15, scientific utilization pointolite principle of reflection, and revise the optical curvature of improvement, LED light source utilization factor is performed to the limit of light output, thus promote brightness, Radiation intensity that LED light source 1 is finally supplied to the light of LCDs 15, save quantity and the power consumption of LED light source.
Above-mentioned each optical component is received and is fixed on a framework, as shown in Figure 3, this framework comprises metal chassis, plastic frame 14 and metal bead 16, metal chassis is splicing construction (display device is accomplished any large scale), comprise edge metal chassis 3 and intermetallic metal chassis 4, LCDs 15 is placed on plastic frame 14, and LCDs 15 pressing is fixed on plastic frame 14 by metal bead 16.In addition, between LCDs 15 and plastic frame 14, be also provided with the silicagel pad (not shown) supported, so that the pressing strengthened between LCDs 15 and plastic frame 14 and provide damping, anti-skidding effect for LCDs 15.
In addition, it should be noted that, in the metal chassis splicing construction shown in Fig. 3, the depression on chassis is along with being spliced to form, but the formation of depression is not limited to the form shown in Fig. 3, also can by concave design at inside chassis but not stitching portion, stitching portion just realizes the effect of simple chassis splicing.
Fig. 4 shows the structural representation according to LED luminescence unit 100 1 preferred embodiments in LED backlight display device of the present invention, as shown in Figure 4, LED luminescence unit 100 comprises the aluminium base 2 of LED package unit, secondary lens 6 and fixed L ED encapsulation unit, wherein secondary lens 6 is arranged in LED package unit, reflexes to light guide plate in order to light dispersion LED package unit sent.
In the preferred embodiment shown in Fig. 4, a LED package unit comprises two LEDs light sources, 1, two reverberation bowl cups 17 and encapsulates the packaging plastic 18 of this LED package unit.Whole LEDs encapsulation unit is welded on and arranges on the aluminium base 2 of P.e.c..Secondary lens 6 comprises reflecting surface 19 and exiting surface 20.
Illustrate three kinds of trends of the light sent by LED light source 1 in the diagram:
Part light as L1 reflected by reverberation bowl cup 17 after enter packaging plastic 18, then enter secondary lens 6, light after the reflecting surface 19 of lens, light by secondary reflection again, from exiting surface 20 outgoing;
A part light as L2, after packaging plastic 18, through reflecting surface 19 reflect after, directly from exiting surface 20 outgoing;
Part light, as L3, after packaging plastic 18, through reflecting surface 19, is gone out from reflecting surface 19 transmission.
Secondary lens 6 wherein can preferably transmittance be more than 90%, refractive index 1.46 ~ 1.53 silica-gel lens, be preferably refractive index about 1.48 silica-gel lens, the concrete structure of lens 6 and shape also can need to make various change according to actual optics.In the embodiment shown in Fig. 4, the tangent plane of secondary lens 6 is 1/4 circle, and wherein reflecting surface 19 is 1/4 circular arc, and exiting surface is perpendicular.
Fig. 5 is the side view that LED lamp bar that the LED luminescence unit 100 shown in several Fig. 4 combines formation is embedded in splicing chassis, as shown in Figure 5, LED luminescence unit 100 of the present invention is one and is fixed on by multiple LED package unit 110 with the secondary lens 6 that each LED package unit 110 matches the LED lamp bar that the aluminium base 2 of strip is formed, also can be considered as multiple LED luminescence unit 100 and be combined into the LED lamp bar embedded in the groove that formed of splicing chassis, gib screw 22 is for being fixed on the groove on chassis by LED lamp bar.In LED lamp bar, the quantity of LED luminescence unit can be determined flexibly according to the requirement of the difference of light source type and display device itself.
Fig. 6 and Fig. 7 is entirety and the details simplified schematic diagram of the connecting method encapsulating chassis in the present invention respectively, as shown in Figure 6 and Figure 7, the whole LED luminescence unit 100 of LED backlight display device of the present invention is screwed on chassis, edge 3 and middle chassis 4, in the connecting method shown in Fig. 6, metal chassis is divided into edge metal chassis 3 and intermetallic metal chassis 4, the place of chassis handing-over is the embedding groove of LED luminescence unit 100, the effect of groove is fixed LED luminescence unit 100 and two chassis, and LED is embedded in the middle of chassis.Chassis and LED luminescence unit are fixed by general employing screw, also can adopt as other modes such as high viscosity heat-conducting silicone grease fix the edge metal chassis of handing-over, central metal chassis and LED luminescence unit.
Fig. 7 is the details simplified schematic diagram of chassis connecting method and LED luminescence unit embedded mode, as shown in Figure 7, LED luminescence unit is had to embed region 23 and 24 between chassis, edge 3 and middle chassis 4, wherein 23 be LED luminescence unit 100 aluminium base embed region, 24 is the embedding region of the LED package unit of LED luminescence unit, and 25 is the screw of fixed underpan and LED luminescence unit.Whole design of the present invention both ensure that the area of dissipation of LED aluminum base plate, can well fix LED luminescence unit again simultaneously, guaranteed that bending can not in use appear in LED luminescence unit and caused image quality bad, thus guarantee the reliability of product quality.
So far, can find out, structure shown in Fig. 3 and Fig. 6 be of the present invention one include be made up of chassis, two edges and middle chassis there are two grooves, the structure schematically illustrated of two LED luminescence units can be embedded, those skilled in the art are to be understood that, according to the statement of technique scheme, chassis, edge wherein, middle chassis and LED luminescence unit can make the length and width size required for any display device product, the mode increasing middle chassis can also be adopted to reach the length and width size required for display device product simultaneously, connecting method between middle chassis is identical with the connecting method on chassis, edge with middle chassis, in this way, the present invention just can realize any splicing of chassis and LED luminescence unit, thus provide safeguard for any large scale made by whole display device.
In the above-described embodiments, the top of every LEDs light source is provided with a secondary lens 6, and certainly, secondary lens also can be a lens bar, is applicable to the whole LED lamp bar of bar shaped.In addition, the concrete structure of secondary lens and shape mode also can need to make various amendment according to actual optics, these amendment all belong to those skilled in the art know the mode known.
Fig. 8 is the structural representation of LED luminescence unit embodiment two in the present invention, as shown in Figure 8, in a preferred embodiment of the present invention, secondary lens can also directly and LED package unit by gummed patten's design be structure as a whole, be fixed on aluminium base 2 and form LED luminescence unit 100 '.
Fig. 9 a and Fig. 9 b is the schematic diagram of metal chassis two embodiments in the present invention respectively, metal chassis in Fig. 9 a only comprises the edge metal chassis 3 that an intermetallic metal chassis 4 and two and the metal chassis in edge metal chassis 3, Fig. 9 b of its splicing comprise two metal chassis 4 and two and its splicing.As previously mentioned, intermetallic metal chassis 4 also can the splicing of any amount, thus provides safeguard for whole display device can make any large scale.
Corresponding with the splicing construction of metal chassis, diffusion sheet 10 and light guide plate 7 also can be designed as the splicing construction of edge-diffusion sheet, edge light guide plate, middle diffusion sheet and middle light guide plate (not shown) herein, wherein corresponding light guide plate mesh point layout distributes according to actual conditions, and principle increases gradually to away from light source dot density from light source.Equally, reflector plate 9 also can be designed as the reflector plate of the splicing construction corresponding with chassis splicing construction.
In addition, in another preferred implementation of the present invention, Reflective adhesive tape (not shown) is being posted herein away from the side of LED with the light guide plate 7 corresponding to edge metal chassis, to reflect re-using by from light guide plate 7 away from the light of the side outgoing of LED, thus improve the utilization factor of light.
Reflective adhesive tape material can be that the nanometer of SiO2, TiO2, SnO2, CaCO2, Nb2O5, ZnO2, MgF2, CeO2, Al2O3, HfO2, Na3LaF6, LaF6TiO2 at least one material is wherein tied to micron powder or other nanometers to the micro-foaming material of micron order high index of refraction and the binder of high transmission rate, is pasted on the base materials such as PET form by the mode of roll extrusion or compound.
Figure 10 is the structural representation of metal chassis embodiment two in the present invention, and according to the design shown in Figure 10, chassis comprises chassis, edge D1, middle chassis D2 and central chassis D3 tri-kinds, and LED luminescence unit is embedded in the groove of splicing place, chassis formation.The splicing of any amount of chassis, four edges and some middle chassis D2, central chassis D3, can ensure that any large scale made by whole display device.Can certainly arrange the groove holding LED luminescence unit by three kinds of inside chassis shown in Figure 10, splicing is only done at the edge on chassis.
Equally, corresponding with the splicing construction of metal chassis, diffusion sheet and light guide plate are also divided into edge-diffusion sheet, edge light guide plate, middle diffusion sheet, middle light guide plate, central diffusion sheet, central light guide plate (not shown) herein.Corresponding light guide plate mesh point layout distributes according to actual conditions, and principle increases gradually to away from light source dot density from light source.
In addition, side outgoing in order to avoid light from light guide plate 7 away from LED causes waste, Reflective adhesive tape (not shown) is posted herein away from the side of LED in edge light guide plate and middle light guide plate, re-using is reflected, to improve the utilization factor of light away from the light of the side outgoing of LED by from light guide plate.Central authorities' light guide plate all has LED due to its surrounding, and therefore this light guide plate surrounding does not need to paste Reflective adhesive tape.
Reflective adhesive tape material can be that the nanometer of SiO2, TiO2, SnO2, CaCO2, Nb2O5, ZnO2, MgF2, CeO2, Al2O3, HfO2, Na3LaF6, LaF6TiO2 at least one material is wherein tied to micron powder or other nanometers to the micro-foaming material of micron order high index of refraction and the binder of high transmission rate, is pasted on the base materials such as PET form by the mode of roll extrusion or compound.
In design proposal of the present invention, because LED luminescence unit is embedded in the groove of splicing place, chassis formation, therefore, in order to improve the brightness and contrast of whole display device, the splicing quantity of middle chassis D2 and central chassis D3 can be increased, thus increase the number of recesses of stitching portion, to ensure to embed the quantity of LED light-emitting section wherein and LED luminescence unit 100.And, due to the natural division of embedded groove, the brightness of each LED light-emitting section can be controlled separately, thus whole display device is divided into some each regions by LED light-emitting section, so just achieve the Region control of display device, thus improve the contrast of display device.
Figure 11 is the structural representation of the backlight package of LED backlight display device of the present invention, as shown in figure 11, metal chassis, LED luminescence unit 100, secondary lens 6, reflector plate 9 and light guide plate 7 are combined, and form the backlight package 120 of LED backlight display device.
With the backlight package shown in Figure 11 correspondingly, metal chassis also can adopt the embodiment shown in Fig. 9 or Figure 10, and LED luminescence unit 100 also can adopt the embodiment shown in Fig. 4, and secondary lens 6 also can adopt the embodiment shown in Fig. 4 or Fig. 8.
In addition, reflector plate and light guide plate also can adopt the division corresponding to metal chassis shown in Fig. 9 or Figure 10, namely edge-diffusion sheet and light guide plate are also divided into edge-diffusion sheet, edge light guide plate, middle diffusion sheet, middle light guide plate, central diffusion sheet, central light guide plate.
In order to prevent occurring dark portion or speck above LED luminescence unit 100, first-selected mode is the shape of the curved surface 19 of adjustment lens 6.By using optical simulation and the Optimization Softwares such as Light tools or Zmex or CodeV, according to the characteristics of luminescence and the lens material of LED, optimize lens-shape.
In addition, in order to prevent occurring bright band above LED luminescence unit 100, diffusion sheet 10 as shown in Figure 1 can be done grey printing treatment in described LED luminescence unit 100 corresponding position.
Figure 12 is the embodiment of described diffusion sheet printing, and as shown in figure 12, the corresponding position of LED luminescence unit 100 on diffusion sheet 10, does grey printing as indicated at 11, and the color depth of grey can be determined according to actual conditions.
Above-mentioned all component is fixed on the assembled chassis in edge metal chassis 3 and intermetallic metal chassis 4 by plastic frame 14, LCDs 15 is placed on plastic frame 14 by the support of silicagel pad (not shown), finally by metal bead/frame 16 immobile liquid crystal display screen 15.
Above with reference to accompanying drawing, the structure according to LED backlight display device of the present invention is described in an illustrative manner.But, it will be appreciated by those skilled in the art that the LED backlight display device that the invention described above is proposed, various improvement can also be made on the basis not departing from content of the present invention.Therefore, protection scope of the present invention should be determined by the content of appending claims.
Claims (9)
1. a LED backlight display device, comprises for display device provides the LED luminescence unit of back light, light guide plate, reflector plate, diffusion sheet, LCDs and accommodation to fix the framework of above-mentioned each optical component, it is characterized in that,
Multiple described LED luminescence unit composition LED lamp bar, wherein,
Described LED luminescence unit comprises the aluminium base being provided with P.e.c., LED package unit and the secondary lens that combine from bottom to top;
Described secondary lens is arranged in described LED package unit, reflexes to described light guide plate in order to the light dispersion described LED package unit sent;
Described LED package unit comprises the packaging plastic of LED light source and the described LED light source of encapsulation;
The light that described LED light source sends enters described secondary lens after the packaging plastic of described LED light source, enter described light guide plate after the reflection of the light part that described LED light source sends via the upper surface of the described secondary lens relative with described LED light source, the light part that described LED light source sends directly goes out to inject described diffusion sheet from the upper surface of described secondary lens;
Described framework is splicing construction, comprises the chassis with splicing construction, and forms the groove holding described LED lamp bar in stitching portion, described chassis, wherein,
Described reflector plate, light guide plate and diffusion sheet are the splicing construction corresponding with the splicing construction on described chassis.
2. LED backlight display device as claimed in claim 1, wherein,
The aluminium base that multiple LED package unit is welded on a strip forms described LED lamp bar, each LED package unit respectively correspondence in conjunction with an independently secondary lens.
3. LED backlight display device as claimed in claim 1, wherein,
The aluminium base that multiple described LED package unit is welded on a strip forms described LED lamp bar;
Described secondary lens is the lens bar corresponding with described LED lamp bar, and all LED package unit of described lens bar in described LED lamp bar are combined.
4. LED backlight display device as claimed in claim 2 or claim 3, wherein,
Described LED package unit comprises two LEDs light sources, two reverberation bowl cups and encapsulates the packaging plastic of described LED package unit, described two reverberation bowl cups are separately positioned on the outside of described two LEDs light sources, thus the whole directive of the light that described LED light source is penetrated is arranged on the secondary lens above LED package unit.
5. LED backlight display device as claimed in claim 4, wherein,
The prismatic lens of the light be also provided with in order to described diffusion sheet is penetrated LCDs described in directive again after concentrating between described diffusion sheet and LCDs.
6. LED backlight display device as claimed in claim 5, wherein,
Correspond to above described LED luminescence unit at described diffusion sheet and do grey printing, for weakening injection light luminance.
7. LED backlight display device as claimed in claim 6, wherein,
Described secondary lens selects transmittance to be more than 90%, refractive index 1.46 ~ 1.53 silica-gel lens.
8. LED backlight display device as claimed in claim 1, wherein,
Described chassis comprises chassis, at least two edges and at least one middle chassis, and stitching portion, described chassis forms the embedding groove of described LED lamp bar.
9. LED backlight display device as claimed in claim 1, wherein,
Described chassis comprises chassis, at least four edges, at least four middle chassis and at least one central chassis, and stitching portion, described chassis forms the embedding groove of described LED lamp bar.
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| CN201010609610.3A CN102566139B (en) | 2010-12-28 | 2010-12-28 | LED (Light-Emitting Diode) backlight display equipment |
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| CN201010609610.3A CN102566139B (en) | 2010-12-28 | 2010-12-28 | LED (Light-Emitting Diode) backlight display equipment |
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