CN200989981Y - Brightness Improvement Structure of LCD Side Backlight - Google Patents
Brightness Improvement Structure of LCD Side Backlight Download PDFInfo
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- CN200989981Y CN200989981Y CN 200620123506 CN200620123506U CN200989981Y CN 200989981 Y CN200989981 Y CN 200989981Y CN 200620123506 CN200620123506 CN 200620123506 CN 200620123506 U CN200620123506 U CN 200620123506U CN 200989981 Y CN200989981 Y CN 200989981Y
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Abstract
本实用新型是一种液晶显示器侧式背光灯的亮度改善结构，其包含一条型罩体，所述的条型罩体的内侧壁具有一可见光层；至少一发光体罩体，所述的发光体罩体是由所述的条型罩体的一侧朝向所述的条型罩体的可见光层弯折而形成；至少一发光体，所述的发光体是由一可产生紫外光或蓝光的条型管体或发光二极管构成，其是设置在所述的发光体罩体内；如此，其反射的可见光是以所述的可见光层的荧光体或磷光体的表层发光为主，可避免因发光体阻挡而无法全反射的缺失，同时可避免光线因必须穿透可见光层而造成的损耗。
The utility model is a brightness improvement structure for a side backlight of a liquid crystal display, which comprises a strip cover body, the inner side wall of the strip cover body having a visible light layer; at least one luminous body cover body, the luminous body cover body being formed by bending one side of the strip cover body toward the visible light layer of the strip cover body; at least one luminous body, the luminous body being composed of a strip tube body or a light-emitting diode capable of generating ultraviolet light or blue light, and being arranged in the luminous body cover body; in this way, the reflected visible light is mainly emitted from the surface of the fluorescent body or phosphorescent body in the visible light layer, which can avoid the loss of total reflection due to the blocking of the luminous body, and at the same time avoid the loss of light due to the need to penetrate the visible light layer.
Description
Technical field
The present invention relates to LCD side formula backlight, is meant a kind of brightness improving structure of LCD side formula backlight especially.
Background technology
For light fixture, equipment and device, no matter be applied in the luminophor of lamp lighting, Graphic Panel, alarming device or various electronic installations, how its design focal point is no more than to promote its light utilization efficiency as far as possible, with regard to fluorescent tube, it is in its glass lamp medial surface coating fluorescent agent coat, rely on its two end electrodes discharge and inspire ultraviolet light, when ultraviolet lighting is mapped to the set fluorescent agent coat of described glass lamp, described fluorescent agent coat just can be excited and be sent light, yet, because of there are following two specific characters in fluorescer:
Fluorescent agent coat has certain thickness, its top layer no doubt can produce visible light when UV-irradiation, but because of described ultraviolet light from the top layer past more deep layer (or nexine) inject, then its ultraviolet ray intensity just can weaken gradually, and causing described deep layer to produce the visible light that is produced is a little less than more described surface layer person is, thereby it is luminous darker to become deep layer, and the luminous brighter ray structure in top layer, in other words, described fluorescer is to have past more deep layer, the problem that its brightness meeting is dark more.
Therefore fluorescent agent coat is not the good transparent body, for the penetrance of visible light the influence of certain degree is arranged, and then causes described visible light strength retrogression, makes visible light that the place, top layer produces when penetrating deep layer, its brightness meeting deepening gradually.
See also the backlight modular structure of conventional liquid crystal shown in Figure 1, described backlight module 1 mainly comprises the panel of from top to bottom repeatedly putting layer by layer 11, diffuser plate 12, light guide plate 13 and reflector plate 14, at described light guide plate 13 sides or bottom luminophor 15 is set, this diagram is that described luminophor 15 is arranged on described light guide plate 13 sides (also promptly general alleged side light type back light module), be provided with the lampshade 16 of semicircular in shape in described luminophor 15 outsides, because of stopping of lampshade 16 with reflective, the light emission direction that can adjust described luminophor 15 is towards described light guide plate 13, rely on again described reflector plate 14 and diffuser plate 12 effects with the light reflection and diffuse on the described panel 11 and make luminous; For make described panel 11 have certain brightness and brightness even, except that the luminosity that improves described luminophor 15, must take into account heating, problems such as heat radiation, therefore, described lampshade 16 has basic critical impact for the brightness of whole backlight module 1, if the light that described luminophor 15 is sent fully can't be reflected described lampshade 16, then can have a strong impact on the follow-up described light guide plate 13 that enters, the photoreduction process that goes out of described reflector plate 14 and described diffuser plate 12, so take a broad view of at present general dealer, it focuses on the improvement of luminophor brightness for the improvement overwhelming majority of backlight film group, or diffuser plate, light guide plate and reflector plate structure improvement, for example adopt light emitting diode as luminophor, or the wedge shape light guide plate is set, or on described diffuser plate, microstructure or the like is set, then do not see improvement for lampshade structure, with structure shown in Figure 1, the light that the described dorsad light guide plate 13 of described luminophor 15 is sent then can stopping because of described luminophor 15, inject described light guide plate 13, cause light utilization efficiency to promote and can't rely on described lampshade 16 to be all-trans.
See also the U.S. shown in Figure 2 patent of invention 5,739, No. 879 " Back lighting device for liquidcrystal displays ", it discloses and a kind of ultraviolet light to be projected to the back lighting device of the display panels of a LCD, comprising:
One can send the fluorescent tube 66 of ultraviolet light 63;
One is arranged on before the described ultraviolet tube 66 and can be through the light guide plate 60 of visible light, and described light guide plate 60 has a front surface, a rear surface and a proximal edges;
One inside surface is coated with the lamp door 67 of ultraviolet light reflectance coating 64, and described ultraviolet light reflectance coating 64 is the common described ultraviolet tubes 66 that surround with the proximal edges of aforementioned described light guide plate 60;
One can convert ultraviolet light 63 to the fluorescence coating 65 of visible light 62, and described fluorescence coating 65 is arranged between the proximal edges of the outside surface of described ultraviolet tube 66 and described light guide plate 60.
The characteristics of aforementioned structure are, described fluorescence coating 65 is arranged between the proximal edges of the outside surface of described ultraviolet tube 66 and described light guide plate 60, only when ultraviolet light 63 enters light guide plate 60, just can pass through described fluorescence coating 65, therefore can reduce the probability that described visible light 62 is absorbed by described fluorescence coating 65, improve light utilization efficiency, yet, the existing main disappearance of this case is, its structure only is to reduce described ultraviolet light 63 merely and enters the ratio of being consumed before the light guide plate 60, there is no any related with the structure or the reflective characteristic of described lamp door 67, moreover, its ultraviolet light 63 pass through described fluorescence coating 65 still for deep layer luminous with penetrate the bad transparent body, so still have the part can be, there is no apparent lifting for light utilization efficiency by 65 absorptions of described fluorescence coating.
Except that the fluorescent tube that can send ultraviolet light, light emitting diode is little owing to having volume, vibration resistance, power saving, advantage such as lower calorific value and long service life, also developed in a large number in recent years as light fixture, and the backlight liquid crystal display module is to be one of its application, see also TaiWan, China application for a patent for invention shown in Figure 3 number No. 94120669 " light-emitting diode (LED) backlight module " with fluorescent powder, this case proposes a kind of backlight module 40 that fluorescent powder 16 is arranged on the exiting surface 24 of light guide plate 12, described light-emitting diode chip for backlight unit 28, colloid 32 is encapsulated in the housing 30 forms a light-emitting diode component 14, be provided with lampshade 18 at described light-emitting diode component 14 away from the side of described light guide plate 12, after the exciting light that described light-emitting diode component 14 is sent enters body 22 by light inlet 20, part can be absorbed by fluorescent powder 16 and inspire emission light, mixes with remaining exciting light by described exiting surface 24 again and penetrates the white light (not shown); The purpose that this case proposes is to solve and existingly fluorescent powder is covered LED surface and causes fluorescent powder to be difficult for evenly covering, cause the not good problem of luminescence efficiency, though this case illustrates described fluorescent powder 16 and can be arranged on described exiting surface 24, reflecting surface 26, maybe can ooze in the assorted described body 22, yet, in any case described fluorescent powder 16 is arranged on the described body 22, it only can be at the excitation line LEX that injects described body 22, still be luminous a kind of of fluorescent powder deep layer, quite bad for luminescence efficiency.
In sum as can be known, the main reason that traditional backlight module light extraction efficiency can't effectively improve is, the deep layer that its bright dipping is behind the visible photosphere that constitutes by fluorescence or phosphorescence is luminous, described visible photosphere may be arranged on lamp tube wall, may be arranged on light guide plate, cause consume when causing light by visible photosphere.
Summary of the invention
Because the disappearance of prior art, fundamental purpose of the present invention is to propose a kind of brightness improving structure of LCD side formula backlight, the visible light of its reflection is luminous based on the top layer of the fluorophor of described visible photosphere or phosphor, the light intensity that can significantly promote light utilization efficiency and enter light guide plate.
For achieving the above object, the technical solution adopted in the utility model is:
A kind of brightness improving structure of LCD side formula backlight, it is characterized in that: it comprises: a stripe shape cover body, the madial wall of described stripe shape cover body have a visible photosphere; One luminophor cover body, described luminophor cover body are towards the visible photosphere bending of described stripe shape cover body and form by a side of described stripe shape cover body; One light out part, described light out part are located between described stripe shape cover body and described luminophor cover body, and its side also is provided with a clamping device, and described clamping device is connected with described stripe shape cover body and luminophor cover body respectively; One light guide plate, described light guide plate upper strata has an exiting surface, lower floor has a reflective surface, and the proximal edges of a contiguous described light out part, and the proximal edges of described light guide plate also is fixed on described clamping device place; And at least one luminophor, described luminophor are to be made of at least one stripe shape body that produces ultraviolet light or blue light, and it is arranged in the described luminophor cover body.
The section of described stripe shape cover body is one of them or its combination of arc, polygon.
The section of described luminophor cover body is one of them or its combination of arc, polygon.
Described visible photosphere be selected from by a fluorescent agent coat, a phosphorescent coating and within it the side reflector layer that is coated with fluorescent agent coat or phosphorescent coating one of formed in the group.
Described visible photosphere is to extend to be arranged on described luminophor cover body on the madial wall of luminophor.
When described luminophor was blue light, described visible photosphere was made of the visible point of light of plural spot distribution.
The distribution area of the visible point of light of described plural number or the density of distribution are to be increased gradually towards the side away from luminophor by the side near luminophor to increase.
Described visible point of light be selected from by a fluorescent agent coat, a phosphorescent coating and within it the side reflector layer that is coated with fluorescent agent coat or phosphorescent coating one of formed in the group.
The top layer of described luminophor cover body is reflector layer or adds a reflection shield.
Described light out part more is provided with a UV Absorption layer outward.
Described UV Absorption layer is to be transparent coating of titanium dioxide or transparent indium and tin oxide film coating, or is one of them or its combination such as a clear glass stripe shape thin slice that does not see through ultraviolet light, stripe shape glass blocks.
Described UV Absorption layer more comprises at least one lens, and described lens are arranged on outside the described light out part.
Described light guide plate is rectangle or wedge type light guide plate.
The exiting surface of described light guide plate and described light out part acutangulate or the obtuse angle.
Described clamping device is provided with visible photosphere towards the face of described light guide plate.
Described visible photosphere be selected from by a fluorescent agent coat, a phosphorescent coating and within it the side reflector layer that is coated with fluorescent agent coat or phosphorescent coating one of formed in the group.
More comprise at least one lens, described lens are arranged on the light travel path between described light out part and described luminophor.
For achieving the above object, the technical solution adopted in the utility model can also be:
A kind of brightness improving structure of LCD side formula backlight, it is characterized in that: it comprises: a stripe shape cover body, the madial wall of described stripe shape cover body have a visible photosphere; Two luminophor cover bodies, described two luminophor cover bodies are respectively towards described visible photosphere bending and form by the both sides of described stripe shape cover body; One light out part, described light out part are located between described stripe shape cover body and described luminophor cover body, and its side also is provided with a clamping device, and described clamping device is connected with described stripe shape cover body and luminophor cover body respectively; One light guide plate, described light guide plate upper strata has an exiting surface, lower floor has a reflective surface, and the proximal edges of a contiguous described light out part, and the proximal edges of described light guide plate also is fixed on described clamping device place; And at least one luminophor, described at least one luminophor are to be made of the stripe shape body that can produce ultraviolet light or blue light, and it is to be separately positioned in the described two luminophor cover bodies.
For achieving the above object, the technical solution adopted in the utility model can also be:
A kind of brightness improving structure of LCD side formula backlight, it is characterized in that: it comprises: a stripe shape cover body, the madial wall of described stripe shape cover body have a visible photosphere; One luminophor cover body, described luminophor cover body are towards the visible photosphere bending of described stripe shape cover body and form by a side of described stripe shape cover body; One light out part, described light out part are located between described stripe shape cover body and described luminophor cover body, and its side also is provided with a clamping device, and described clamping device is connected with described stripe shape cover body and luminophor cover body respectively; One light guide plate, described light guide plate upper strata has an exiting surface, lower floor has a reflective surface, and the proximal edges of a contiguous described light out part, and the proximal edges of described light guide plate also is fixed on described clamping device place; And at least one luminophor, described luminophor are made of a light emitting diode that can produce ultraviolet light or blue light, and it is arranged in the described luminophor cover body.
For achieving the above object, the technical solution adopted in the utility model can also be:
A kind of brightness improving structure of LCD side formula backlight, it is characterized in that: it comprises: a stripe shape cover body, the madial wall of described stripe shape cover body have a visible photosphere; Two luminophor cover bodies, described two luminophor cover bodies are respectively towards described visible photosphere bending and form by the both sides of described stripe shape cover body; One light out part, described light out part are located between described stripe shape cover body and described luminophor cover body, and its side also is provided with a clamping device, and described clamping device is connected with described stripe shape cover body and luminophor cover body respectively; One light guide plate, described light guide plate upper strata has an exiting surface, lower floor has a reflective surface, and the proximal edges of a contiguous described light out part, and the proximal edges of described light guide plate also is fixed on described clamping device place; And, at least one luminophor, described at least one luminophor is made of the light emitting diode that can produce ultraviolet light or blue light, and it is to be separately positioned in the described two luminophor cover bodies.
In the zone that ultraviolet light or blue light shone in above stripe shape cover body and the luminophor cover body, the part that includes stripe shape cover body, luminophor cover body and luminophor, further can be sealed and be vacuumized and the filling inert gas, this partly makes similar with existing fluorescent tube, this creation only illustrates partly that at the structure that its luminosity improves the encapsulation of inert gas just will not be given unnecessary details.
Compared with prior art, adopt the advantage that the utlity model has of technique scheme to be: the brightness improving structure of the LCD side formula backlight that the utility model proposed, the visible light of its reflection is luminous based on the top layer of the fluorophor of described visible photosphere or phosphor, not only can avoid traditional structure because of luminophor stops can't total reflection disappearance, can avoid the disappearance of light simultaneously because of necessary penetration phosphors loss.
Description of drawings
Fig. 1 is the backlight modular structure synoptic diagram of conventional liquid crystal;
Fig. 2 is the structural representation of No. 5,739,879, U.S.'s patent of invention;
Fig. 3 is the structural representation of TaiWan, China application for a patent for invention number No. 94120669;
Fig. 4 is a preferred embodiment figure of the present invention;
Fig. 5 is two kinds of multi-form structural representations that the present invention links light guide plate;
Fig. 5 A is the derivative form of Fig. 5 embodiment;
Fig. 6 is two kinds of multi-form structural representations that the present invention links light guide plate;
Fig. 7 is the structural representation of the invention process at multi-form luminophor;
Fig. 8 is the structural representation of the invention process at multi-form luminophor;
Fig. 9 is the structural representation of the invention process at multi-form luminophor;
Figure 10 is the structural representation of the different forms of implementation of backlight structures of the present invention;
Figure 11 is the structural representation of the different forms of implementation of backlight structures of the present invention;
Figure 12 is the structural representation of the different forms of implementation of backlight structures of the present invention;
Figure 13 is the structural representation of the different forms of implementation of backlight structures of the present invention;
Figure 14 is the structural representation of the different forms of implementation of backlight structures of the present invention;
Figure 15 is the structural representation of the different forms of implementation of backlight structures of the present invention;
Figure 16 is the derivative form of Figure 15 embodiment;
Figure 17 is the derivative form of Figure 16 embodiment;
Figure 18 is another derivative form of Figure 16 embodiment;
Figure 19 is the structural representation that the present invention is provided with the symmetric double luminophor;
Figure 20 is the derivative form of Figure 17 embodiment;
Figure 21 is the derivative form of Figure 20 embodiment.
Description of reference numerals: 2,2a, 2b, 2c, 2d, 2e, 2f, 20,120,220,320,420,520-backlight structures; 3,3a, 3b, 3c, 3d, 3e, 3f, 30,130,230,330,430,530-stripe shape cover body; 4,40,140,240,340-luminophor cover body; 5,5a, 5b, 5c, 5d, 5e, 50,150,250,350,450,550-luminophor; 6,60,160,260,360,311, the visible photosphere of 411-; 21,61,251-reflector layer; 461,561-fluorescence or phosphor dot; 351,421,480,580-reflection shield; 51,151-ultraviolet light or blue light; 422,522-UV-absorbing layer; The 52-visible light; 551-light center axle; 7,70,170,270,370,470,570-light out part; 8,280,380-light guide plate; The 81-proximal edges; The 82-reflective surface; The 83-exiting surface; The 84-far lateral side; 31,41,431,441,531,541-clamping device; 9,19,190,290,390-UV Absorption layer 191-reflecting piece; 91, the vertical normal of 200-lens L-; θ 1, θ 2-are provided with angle; θ 3-angle.
Embodiment
Describe the present invention for reaching employed technological means of purpose and effect hereinafter with reference to accompanying drawing, and following graphic cited embodiment only is an aid illustration, understands, but that the technological means of this case is not limited to is cited graphic in order to your juror.
See also shown in Figure 4, the brightness improving structure of a kind of LCD side formula backlight provided by the invention, described backlight structures 2 comprises a stripe shape cover body 3, a luminophor cover body 4 and a luminophor 5, madial wall at described stripe shape cover body 3 has a visible photosphere 6, described luminophor cover body 4 be by a side of described stripe shape cover body 3 towards visible photosphere 6 bendings of described stripe shape cover body 3 and form, described luminophor cover body 4 is provided with a reflector layer 21 in it; Described luminophor 5 is to be made of a stripe shape body that can produce ultraviolet light or blue light, it is arranged in the described luminophor cover body 4, because described stripe shape cover body 3, luminophor cover body 4 are long strip type with luminophor 5, represent explanation with section structure among the figure.
As shown in Figure 4, described stripe shape cover body 3 is circular-arc with the section of luminophor cover body 4, described visible photosphere 6 is to be selected from by a fluorescent agent coat, one phosphorescent coating and the one side reflector layer that is coated with fluorescent agent coat or phosphorescent coating within it one of is formed in the group, in addition, in order to cooperate the light modulation of blue luminophor 5 and yellow powder, the coating of described visible photosphere 6 can be made of the visible point of light of plural spot distribution, ultraviolet light that described luminophor 5 is sent or blue light 51 are incident upon on the described visible photosphere 6, can be excited and be reflected into visible light 52, penetrate described stripe shape cover body 3 by formed light out part 7 between described stripe shape cover body 3 and the described luminophor cover body 4, generally for ultraviolet light and visible light, design good reflex reflector, its efficient is much larger than the penetrance of fluorophor, in view of the above, because described visible light 52 is luminous based on the top layer of the fluorophor of described visible photosphere 6 or phosphor, can avoid the luminous and inefficient disappearance of fluorophor deep layer, simultaneously can avoid light because of penetrating the loss that visible photosphere causes, therefore can significantly improve light utilization efficiency, make the brightness of backlight obtain obviously to improve.
See also shown in Figure 5, described embodiment shows the described light out part 7 outer light guide plate 8 that continue, described light guide plate 8 has the proximal edges 81 of a contiguous described light out part 7, one reflective surface 82, one exiting surface 83 and a far lateral side 84 away from described light out part 7, the proximal edges 81 of described light guide plate 8 is provided with a clamping device 31,41, described clamping device 31, the 41st, be connected with described luminophor cover body 4 with described stripe shape cover body 3, the proximal edges 81 of described light guide plate 8 can be fixed on outside the described light out part 7, between described proximal edges 81 and described light out part 7, be provided with a UV Absorption layer 9, described UV Absorption layer 9 is to be transparent titania (TiO2) coating or transparent indium tin oxide (ITO) film coating, or be one not see through the clear glass stripe shape thin slice of ultraviolet light, stripe shape glass blocks etc., its role is to absorb ultraviolet light, to avoid ultraviolet light to leak causing human body or object impaired, in addition, because described light guide plate 8 generally is to adopt resin to make, rely on the setting of described UV Absorption layer 9, also can avoid described light guide plate 8 to turn to be yellow because of a spot of ultraviolet light long term of remnants, if during the light guide plate 8 of right employing glass material, then described UV Absorption layer 9 can be set.
Further, described UV Absorption layer 9 shown in Figure 5 also can the convex cylindrical lens 91 substitutes, see also Fig. 5 A illustrated embodiment, enter described light guide plate 8 in the hope of reaching more total reflection light 52, other member of present embodiment is no longer given unnecessary details with embodiment illustrated in fig. 5 identical and act on identically.
Please consult Fig. 5 and Fig. 6 simultaneously, Fig. 6 is based on Fig. 5 embodiment, described backlight structures 2 comprises a stripe shape cover body 3, an one luminophor cover body 4 and a luminophor 5, madial wall at described stripe shape cover body 3 has a visible photosphere 6, be provided with a reflector layer 21 in the described luminophor cover body 4, by forming a light out part 7 between described stripe shape cover body 3 and the described luminophor cover body 4, the described light out part 7 outer light guide plate 8 that continue, described light guide plate 8 has a proximal edges 81, one reflective surface 82, one exiting surface 83 and a far lateral side 84, the proximal edges 81 of described light guide plate 8 is provided with a clamping device 31,41, described clamping device 31, the 41st, be connected with described luminophor cover body 4 with described stripe shape cover body 3, the proximal edges 81 of described light guide plate 8 can be fixed on outside the described light out part 7, between described proximal edges 81 and described light out part 7, be provided with a UV Absorption layer 19, the function of above-mentioned each member is identical with Fig. 5, will not describe in detail herein; The dissimilarity of Fig. 6 embodiment and Fig. 5 embodiment is, the described light out part 7 of Fig. 5 has a vertical angle θ 1 that is provided with, and the described light out part 7 of Fig. 6 has a non-perpendicular angle θ 2 that is provided with, for adapting to the described angle θ 2 that is provided with, therefore described UV Absorption layer 19 presents trapezoidal, secondly, described clamping device 31,41 faces towards described light guide plate 8 are provided with visible photosphere 311,411, and described visible photosphere 311,411 is a reflector layer; Fig. 6 embodiment is explanation, the angle that is provided with of described backlight structures 2, described light guide plate 8 can be according to actual required and change, the exiting surface 83 of described light guide plate 8 can be not orthogonal to described light out part 7, external form as for described light guide plate 8 can be rectangle or wedge type light guide plate, this is known by general personage, does not describe in detail one by one.
Therefore see also Fig. 7～Fig. 9 and show the multi-form of luminophor set-up mode of the present invention, it all is the structures based on Fig. 6, can consult description for Fig. 6 for the effect of identical components, only explains at its dissimilarity herein; As shown in Figure 7, its dissimilarity is to be provided with two luminophor 5a, 5b side by side, and described two luminophor 5a, 5b are all outer to be exposed at described luminophor cover body 4, and the ultraviolet light that two luminophor 5a, 5b are sent can directly be incident upon on the described visible photosphere 6; As shown in Figure 8, its dissimilarity is to have only described luminophor 5c to be exposed at described luminophor cover body 4 outward among its two luminophor 5c, 5d that is arranged side by side, and also is that the ultraviolet light that described luminophor 5c is sent is directly to be incident upon on the described visible photosphere 6; Again as shown in Figure 9, its dissimilarity is that described luminophor 5e is a light emitting diode, should be noted that, but when the light emitting diode that adopts blue light-emitting during as luminophor 5e, the UV Absorption layer 19 of Fig. 6 then needn't be set, the proximal edges 81 of described light guide plate 8 can be extended directly and join with described light out part 7,6 fluorescent powder that are set to inspire gold-tinted of described visible photosphere are to form white light; Comprehensive as can be known above-mentioned, the present invention can adopt different types of luminescence component as luminophor, except that above-mentioned described ultraviolet lamp tube or light emitting diode, also can be wire type light emitting diode or surface-mounting LED one of them or its combination, according to actual required with the luminophor array that adopts in described luminophor cover body 4, the external form of described luminophor cover body 4 is then different and change according to set luminophor kind difference or quantity.
See also the structural representation of the different forms of implementation of Figure 10～backlight structures 2a of the present invention shown in Figure 15～2f, it all is the structures based on Fig. 4, therefore can consult description for the effect of identical components, only explain herein at its dissimilarity for Fig. 4; By icon as can be known, the dissimilarity of described backlight structures 2a～2f is to have the stripe shape cover body 3a～3f of different section, described stripe shape cover body 3a, para-curve contracts in 3b presents respectively, extend out parabolic type, described stripe shape cover body 3c～3e presents triangle respectively, rectangle, trapezoidal, described stripe shape cover body 3f then is the combination of curve and straight flange, in view of the above as can be known, the section of described stripe shape cover body 3a～3f provided by the present invention can be arc, polygon one of them or its combination, and Figure 10 can make up to the described different luminophors that form is set shown in Figure 9 with Fig. 7 mutually to embodiment illustrated in fig. 15, therefore, the section of described luminophor cover body 4 also can be arc, polygon one of them or its combination.
See also shown in Figure 16, described embodiment is the derivative form for Figure 15 embodiment, described backlight structures 20 comprises a stripe shape cover body 30, an one luminophor cover body 40 and a luminophor 50, madial wall at described stripe shape cover body 30 has a visible photosphere 60, by forming a light out part 70 between described stripe shape cover body 30 and the described luminophor cover body 40, the described light out part 70 light guide plate (not shown) that can continue again, the characteristics of present embodiment are, be provided with a visible reflector layer 61 between described luminophor 50 and the described luminophor cover body 40, described visible reflector layer 61 can be extended and upward setting by described visible photosphere 60, similarly, described visible photosphere 60 optional free fluorescent agent coat, one phosphorescent coating and the one side reflector layer that is coated with fluorescent agent coat or phosphorescent coating is within it formed one in the group.
Embodiment as shown in figure 17, it is the derivative form for Figure 16 embodiment, described backlight structures 120 comprises a stripe shape cover body 130, a luminophor cover body 140 and a luminophor 150, madial wall at described stripe shape cover body 130 has a visible photosphere 160, by forming a light out part 170 between described stripe shape cover body 130 and the described luminophor cover body 140, the characteristics of present embodiment are:
Described visible photosphere 160 optional free fluorescent agent coat, a phosphorescent coating and the side reflector layer that is coated with fluorescent agent coat or phosphorescent coating are within it formed one in the group.
It comprises that one has the louvered reflecting piece structure that reflexive reflecting piece 191 constitutes by plural number, the reflecting piece 191 of described plural number is arranged on described light out part 170, it is, in order to the light that reflects described luminophor 150 and receive described visible photosphere 160, similarly, the density that described plural reflecting piece is 191 is to be enlarged gradually towards the side away from described luminophor 150 by the side near described luminophor 150, so, because distance between the described reflecting piece 191 at the luminous place of described luminophor 150 deep layers has greatly, therefore the more light of tolerable passes through, anti-, more near the described reflecting piece 191 of described luminophor 150 because of have less between distance, therefore can stop that light passes through, so can reach and adjust irradiant purpose, make the reflected light that penetrates described light out part 170 more even.
It comprises lens 200, described lens 200 are arranged on the light travel path of 150 of described light out part 170 and described luminophors, described lens 200 can be illustrated two-sided projection face lens, lens one of them or its combination of also can be single face projection face lens or having a plurality of projections, the effect of described lens 200 is to be that ultraviolet light or blue light 151 that described luminophor 150 is produced focus on, and make the described lens 200 of even ejaculation and the described visible photosphere 160 of directive.
Except that These characteristics, similarly, on described light out part 170, be provided with a UV Absorption layer 190, and the described outer light absorbing zone 190 outer light guide plate (not shown)s that can continue again, its effect is extremely embodiment illustrated in fig. 9 identical with Fig. 5; With in like manner embodiment illustrated in fig. 5, because the luminophor 150 of present embodiment be the UV-light luminous body, and described lens 200 are arranged in the described light out part 170, so the described lens 200 quartzy material that must adopt ultraviolet light to see through.
See also shown in Figure 180, described embodiment is another derivative form features simple structure for Figure 16 embodiment, described backlight structures 220 comprises a stripe shape cover body 230, an one luminophor cover body 240 and a luminophor 250, madial wall at described stripe shape cover body 230 has a visible photosphere 260, by forming a light out part 270 between described stripe shape cover body 230 and the described luminophor cover body 240, one reflector layer 251 is set in the described luminophor cover body 240, described light out part 270 is provided with UV Absorption layer 290 and continues a light guide plate 280, the light that described luminophor 250 is sent is luminous based on the top layer of the fluorophor of described visible photosphere 260 or phosphor, can reflect fully and enter described light guide plate 280, not only can avoid traditional structure because of luminophor stops can't total reflection disappearance, can avoid the disappearance of light simultaneously because of necessary penetration phosphors loss.
See also shown in Figure 19, described embodiment is based on embodiment illustrated in fig. 5, described backlight structures 320 comprises a stripe shape cover body 330, the upper and lower sides symmetry of described stripe shape cover body 330 is respectively equipped with a luminophor cover body 340, in described luminophor cover body 340, be provided with a reflection shield 351 and luminophor 350, madial wall at described stripe shape cover body 330 has a visible photosphere 360, by forming a light out part 370 between described stripe shape cover body 330 and the described luminophor cover body 340, described light out part 370 is provided with UV Absorption layer 390 and continues a light guide plate 380, similarly, described pair of luminophor 350 can be provided with the A as Fig. 5, Fig. 6 is provided with form to different luminophor shown in Figure 9, and the Figure 10 that also can arrange in pairs or groups extremely different outer outlet body shown in Figure 17 is provided with form.
See also Figure 20, described backlight structures 420 comprises a stripe shape luminophor cover body 430 and a luminophor 450, in the described luminophor cover body 430 reflection shield 421 is set, described luminophor 450 is to constitute for a stripe shape body that can produce ultraviolet light or blue light, the top is provided with a UV-absorbing layer 422, described stripe shape cover body 430 has a light out part 470, described light out part 470 is outer with clamping device 431,441 light guide plate 8 that continue, described light guide plate 8 is to be quartzy material, it has a proximal edges 81, one reflective surface 82, one exiting surface 83 and a far lateral side 84, outside the reflective surface 82 of described light guide plate 8 and far lateral side 84, be covered with reflection shield 480, between described reflective surface 82 bottoms and described reflection shield 480, be provided with fluorescence or phosphor dot 461, the distribution mode of described fluorescence or phosphor dot 461, be proximal edges 81 by described light guide plate 8 towards described far lateral side 84 by thin and close setting, in addition, can be to strengthen gradually also with the size of described fluorescence or phosphor dot 461, so, because the distribution area of described fluorescence or phosphor dot 461 or the density of distribution are to be increased gradually towards the side away from described luminophor 450 by the side near described luminophor 450 to increase, so the luminous place of described luminophor 450 deep layers is had than large tracts of land, make the light that penetrates described exiting surface 83 more even.
See also Figure 21, described embodiment is to be basic framework with Figure 20 embodiment, described backlight structures 520 comprises a stripe shape cover body 530 and sends out the luminophor 550 of ultraviolet light or blue light with at least one, described stripe shape cover body 530 has a light out part 570, described light out part 570 is outer with clamping device 531,541 light guide plate 8 that continue, the top is provided with a UV-absorbing layer 522, described light guide plate 8 has a proximal edges 81, there is a reflective surface 82 in lower floor, there are an exiting surface 83 and a far lateral side 84 in the upper strata, outside the reflective surface 82 of described light guide plate 8 and far lateral side 84, be covered with reflection shield 580, between described reflective surface 82 bottoms and described reflection shield 580, be provided with fluorescence or phosphor dot 561, the function of above-mentioned member is identical with Figure 20, will not give unnecessary details herein, the characteristics of present embodiment are, but described luminophor 550 is the light emitting diodes at least one blue light-emitting, the light center axle 551 of described luminophor 550 has an angle theta 3 with the vertical normal L of described reflective surface 82, rely on the setting of described angle theta 3, it is luminous to make that 550 pairs of described light guide plate 8 of described luminophor produce oblique formula, cooperate described again by thin and close fluorescence or phosphor dot 561 settings, can form more total reflection light, make the light that penetrates described exiting surface 83 more even.Mandatory declaration is in addition, the stripe shape body luminophor 450 of Figure 20, and the light-emitting diodes form of tubes luminophor 550 of Figure 21, both interchangeable application, also be, the luminophor 550 of Figure 21 may be implemented in the stripe shape cover body 430 of Figure 20, and the luminophor 450 of Figure 20 is also eccentric to be arranged in the stripe shape cover body 530 of Figure 21, all can reach identical effect.
In addition, in this case among all embodiment, the zone that ultraviolet light or blue light shone in stripe shape cover body and luminophor cover body, the part that comprises stripe shape cover body, luminophor cover body and luminophor, can be sealed and be vacuumized and the filling inert gas, this is partly similar with existing fluorescent tube making, just repeats no more at this.
In sum, the brightness improving structure of the LCD side formula backlight that the utility model proposed, the visible light of its reflection is luminous based on the top layer of the fluorophor of described visible photosphere or phosphor, not only can avoid traditional structure because of luminophor stops can't total reflection disappearance, can avoid simultaneously the disappearance of light, be useful in any light fixture, equipment and device and use and the manufacturing association area because of necessary penetration phosphors loss.
More than explanation is just illustrative for the utility model, and it is nonrestrictive, those of ordinary skills understand, under the situation of the spirit and scope that do not break away from claim and limited, can make many modifications, variation or equivalence, but but all will fall within the claim restricted portion of the present utility model.
Claims (73)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620123506 CN200989981Y (en) | 2006-08-01 | 2006-08-01 | Brightness Improvement Structure of LCD Side Backlight |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620123506 CN200989981Y (en) | 2006-08-01 | 2006-08-01 | Brightness Improvement Structure of LCD Side Backlight |
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| CN200989981Y true CN200989981Y (en) | 2007-12-12 |
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| CN 200620123506 Expired - Fee Related CN200989981Y (en) | 2006-08-01 | 2006-08-01 | Brightness Improvement Structure of LCD Side Backlight |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2009067844A1 (en) * | 2007-11-28 | 2009-06-04 | Chihua Shieh | A light emitting diode illuminator |
| WO2013155933A1 (en) * | 2012-04-16 | 2013-10-24 | 山东新北洋信息技术股份有限公司 | Slice medium detector and slice medium processor |
| CN102187146B (en) * | 2008-10-15 | 2013-12-11 | 夏普株式会社 | Lighting devices, display devices and television receivers |
| CN103994367A (en) * | 2014-05-08 | 2014-08-20 | 杭州杭科光电股份有限公司 | Side-in type LED backlight source module |
| CN104460098A (en) * | 2013-09-22 | 2015-03-25 | 联想(北京)有限公司 | Liquid crystal display method and device |
| WO2015085548A1 (en) * | 2013-12-12 | 2015-06-18 | 华为终端有限公司 | Light guide plate, manufacturing method therefor, and terminal device having same |
| CN104848089A (en) * | 2015-05-14 | 2015-08-19 | 武汉华星光电技术有限公司 | Backlight module and display device |
| CN110501848A (en) * | 2018-05-18 | 2019-11-26 | 胜利仕科技股份有限公司 | Liquid crystal display device |
| CN112162436A (en) * | 2020-11-13 | 2021-01-01 | 福州大学 | A kind of quantum dot backlight module structure |
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- 2006-08-01 CN CN 200620123506 patent/CN200989981Y/en not_active Expired - Fee Related
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009067844A1 (en) * | 2007-11-28 | 2009-06-04 | Chihua Shieh | A light emitting diode illuminator |
| CN102187146B (en) * | 2008-10-15 | 2013-12-11 | 夏普株式会社 | Lighting devices, display devices and television receivers |
| CN103376476B (en) * | 2012-04-16 | 2016-06-08 | 山东新北洋信息技术股份有限公司 | Flaky medium detecting device and laminated medium processing unit |
| WO2013155933A1 (en) * | 2012-04-16 | 2013-10-24 | 山东新北洋信息技术股份有限公司 | Slice medium detector and slice medium processor |
| CN103376476A (en) * | 2012-04-16 | 2013-10-30 | 山东新北洋信息技术股份有限公司 | Sheet type medium detecting device and sheet type medium processing device |
| CN104460098B (en) * | 2013-09-22 | 2018-07-06 | 联想(北京)有限公司 | Liquid crystal display method and liquid crystal display |
| CN104460098A (en) * | 2013-09-22 | 2015-03-25 | 联想(北京)有限公司 | Liquid crystal display method and device |
| WO2015085548A1 (en) * | 2013-12-12 | 2015-06-18 | 华为终端有限公司 | Light guide plate, manufacturing method therefor, and terminal device having same |
| CN103994367A (en) * | 2014-05-08 | 2014-08-20 | 杭州杭科光电股份有限公司 | Side-in type LED backlight source module |
| CN104848089A (en) * | 2015-05-14 | 2015-08-19 | 武汉华星光电技术有限公司 | Backlight module and display device |
| CN110501848A (en) * | 2018-05-18 | 2019-11-26 | 胜利仕科技股份有限公司 | Liquid crystal display device |
| CN112162436A (en) * | 2020-11-13 | 2021-01-01 | 福州大学 | A kind of quantum dot backlight module structure |
| CN112162436B (en) * | 2020-11-13 | 2022-04-08 | 福州大学 | A quantum dot backlight module structure |
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