CN204945578U - Curved surface back light unit and display device - Google Patents
Curved surface back light unit and display device Download PDFInfo
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- CN204945578U CN204945578U CN201520790776.8U CN201520790776U CN204945578U CN 204945578 U CN204945578 U CN 204945578U CN 201520790776 U CN201520790776 U CN 201520790776U CN 204945578 U CN204945578 U CN 204945578U
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Abstract
A kind of curved surface back light unit, display device.Curved surface back light unit comprises light guide plate, one or more arc keeper; Described light guide plate, for extending the curved surface light guide plate formed to both sides along first direction from intermediate position, comprises intrados, extrados; Second direction vertical with described first direction in the intrados of described light guide plate and the face of extrados is rectilinear direction; At least one position of at least described centre position of described light guide plate and every side in described centre position is fixedly connected with the arcuate structure of at least same described arc keeper, and the cambered surface bending direction of described light guide plate is consistent with the bending direction of the described arcuate structure of this arc keeper.
Description
Technical field
The utility model relates to curved-surface display technical field, particularly a kind of curved surface back light unit and comprise the display device of this curved surface back light unit.
Background technology
The advantages such as it is low that curved-surface display has screen reflection, and contrast is high.At present, curved-surface display technology is more and more wider in the application in the field such as watch-dog and large screen television.The design of camber display screen mean camber back light unit and shaping difficulty are comparatively large, and it is also the key of producing camber display screen.The production of prior art mean camber back light unit adopts first shaping curved surface back light unit monomer, and then by the method that each monomer is assembled, not only complex procedures, and cost is higher.
Utility model content
An aspect of the present utility model provides a kind of curved surface back light unit, comprises light guide plate, one or more arc keeper; Described light guide plate, for extending the curved surface light guide plate formed to both sides along first direction from intermediate position, comprises intrados, extrados; Second direction vertical with described first direction in the intrados of described light guide plate and the face of extrados is rectilinear direction; At least one position of at least described centre position of described light guide plate and every side in described centre position is fixedly connected with the arcuate structure of at least same described arc keeper, and the cambered surface bending direction of described light guide plate is consistent with the bending direction of the described arcuate structure of this arc keeper.
Such as, described arc keeper at least comprises two ends are connected two ends main part with one, and described main part is the arcuate structure extended to two ends along described first direction; One of being at least fixedly connected with of the extrados of described main part and described light guide plate and intrados.
Such as, described curved surface back light unit also comprises at least one first backboard and at least two the second backboards; Wherein, the centre position of the extrados of described light guide plate is fixedly connected with described first backboard, and the both sides of the extrados of described light guide plate are fixedly connected with described second backboard; Described arc keeper is fixedly connected with described first backboard and described second backboard.
Such as, described arc keeper is string configuration.
Such as, described arc keeper at least comprises the first location structure be positioned in the middle of it and the second location structure being positioned at its two ends; Described first backboard at least comprises the first retaining structure matched with described first location structure, described second backboard at least comprises the second retaining structure matched with described second location structure.
Such as, described first location structure comprises pilot hole and grab, and described first retaining structure is projection; Or described first location structure is projection, described first retaining structure comprises pilot hole and grab.
Such as, described second location structure is groove, and described second retaining structure is projection; Or described second location structure is projection, described second retaining structure is groove.
Such as, the curvature of described arc keeper is identical with the curvature of described light guide plate.
Such as, the described intrados side of described light guide plate is also fitted with blooming piece; The described extrados side of described light guide plate is also fitted with reflector plate; The outside of described reflector plate is fitted with hard films; Described second backboard is provided with oneself and replys stator, and spooling is distinguished described from replying on stator in the two ends of described hard films; In described light guide plate generation deformation and when described reflector plate is exerted pressure, described hard films discharges from described from reply stator, to make described hard films compress described reflector plate all the time in described light guide plate deformation process, guarantee that described reflector plate and described light guide plate fit tightly.
Such as, described light guide plate comprises two sides and two curved ends respect to one another; Two described curved ends are moulded members of frame respectively by one first and are fixed on described first backboard, and two described sides are moulded members of frame respectively by one second and are fixed on described second backboard.
Such as, described first to mould members of frame be resilient material, and described second to mould members of frame be rigid material.
Such as, in described vulcanie doped with fine wire.
Another aspect of the present utility model provides a kind of display device comprising curved surface back light unit as above.
Such as, padded coaming is provided with between the edge of described back light unit and described array base palte edge.
Such as, the colored filter area on described color membrane substrates is greater than the elemental area described array base palte corresponding to described colored filter.
Accompanying drawing explanation
Fig. 1 a is the structural representation of light guide plate in the curved surface back light unit of the utility model embodiment;
Fig. 1 b is the schematic three dimensional views of the utility model embodiment mean camber structure of backlight unit;
Fig. 1 c is the structural representation of the light guide plate extrados installation backboard of the utility model embodiment mean camber back light unit;
Fig. 2 is an embodiment mean camber back light unit arc keeper of the present utility model and backboard snap fit schematic diagram;
Fig. 3 a adopts tractive first backboard to prepare the view of each parts before tractive in curved surface back light unit method in an embodiment of the present utility model;
Fig. 3 b is the vertical view of Fig. 3 a;
Fig. 3 c adopts tractive first backboard to prepare the product final structure schematic diagram of curved surface back light unit method gained in an embodiment of the present utility model.
Embodiment
For making the object of the utility model embodiment, technical scheme and advantage clearly, below in conjunction with the accompanying drawing of the utility model embodiment, the technical scheme of the utility model embodiment is clearly and completely described.Obviously, described embodiment is a part of embodiment of the present utility model, instead of whole embodiments.Based on described embodiment of the present utility model, the every other embodiment that those of ordinary skill in the art obtain under without the need to the prerequisite of creative work, all belongs to the scope of the utility model protection.
With reference to Fig. 1 a, embodiment mean camber light guide plate of the present utility model comprises extrados 11 respect to one another and intrados 12, two curved ends 13 respect to one another and two sides 14; Intrados 12 and extrados 11 are and extend to two sides 14 from respective centre position along first direction and form cambered surface, and two curved ends 13 are basically identical with the bearing of trend of internal and external cambered surface; Described internal and external cambered surface also exists the second direction vertical with described first direction, and second direction is straight line, and the first direction along internal and external cambered surface is curve line; Those skilled in the art are known, and in the face of internal and external cambered surface, when meeting that first direction and second direction vertical with second direction is straight line, first direction is curve, first direction and second direction are well-determined direction.In order to hereafter be described clearly, two curved end 13 positions are defined as upper-lower position, and position, two sides 14 is defined as right position, and extrados 11 and the position of intrados 12 between described two sides 14 are centre position.Those skilled in the art are known, and two curved ends 13 of light guide plate form along extending with intrados 12 and the basically identical first direction of extrados 11.In fact, when this curved surface light guide plate being made curved-surface display device such as curved surface TV, beholder is positioned at the intrados side of curved-surface display device, and its right position, upper-lower position and centre position are consistent with above-mentioned definition, and the intrados of light guide plate is light emission side.Curved surface back light unit manufacture method part about the definition in upper-lower position, right position and centre position identical therewith.
Embodiment of the present utility model provides a kind of back light unit, may be used for the display device with side entering type light-source structure; Comprise light guide plate, one or more arc keeper; Described light guide plate, for extending the curved surface light guide plate formed to both sides along first direction from intermediate position, comprises intrados, extrados; Second direction vertical with described first direction in the intrados of described light guide plate and the face of extrados is rectilinear direction; At least one position of at least described centre position of described light guide plate and every side in described centre position is fixedly connected with the arcuate structure of at least same described arc keeper, and the cambered surface bending direction of described light guide plate is consistent with the bending direction of the described arcuate structure of this arc keeper.
The arc location structure of arc keeper and the centre position of curved surface light guide plate and the fixed connection point of both sides more, it is better to the locating effect of curved surface light guide plate, but should ensure at least to arrange a fixed connection point in the centre position of curved surface light guide plate, and a fixed connection point is at least respectively set in the both sides in centre position, and three fixed connection points are at least fixedly connected with same arc keeper, and when ensureing that the bending direction of arc keeper is consistent with the cambered surface bending direction of light guide plate, effective location can be carried out to curved surface light guide plate.It should be noted that, arc keeper is that the arcuate structure having rigidity by it is connected with being fixed to one another of curved surface light guide plate for the positioning principle of curved surface light guide plate, with the pulling force of the tension force and centre position of offsetting curved surface light guide plate both sides, prevent the curvature of curved surface light guide plate from changing, improve structural stability.
In one embodiment, described arc keeper at least comprises two ends are connected two ends main part with one, and described main part is the arcuate structure extended to two ends along described first direction; One of being at least fixedly connected with of the extrados of described main part and described light guide plate and intrados.The main part of arc keeper such as can form the structure of internal and external cambered surface, and the curvature of internal and external cambered surface is such as identical with the curvature of curved surface light guide plate.Its fixed form can be such as that the extrados of its intrados and curved surface light guide plate is fitted, and is fixedly connected with, and this connected mode is not high to the width requirement of arc keeper, can be strip structure, can be globoidal structure yet; Also can be that the intrados of its extrados and curved surface light guide plate is fitted, and be fixedly connected with, but now, the intrados due to curved surface light guide plate be its light emission side, such as, can adopt the strip structure that width is less, to avoid the lighting area affecting curved surface light guide plate; Or its end face is fixedly connected with two curved ends above and/or under curved surface light guide plate, this connected mode such as can adopt the thickness that thickness is basic and curved surface light guide plate is similar, and the end face of arc keeper such as can match with the curved end of light guide plate.
In one embodiment, curved surface back light unit also comprises at least one first backboard and at least two the second backboards; Wherein, the centre position of the extrados of described light guide plate is fixedly connected with described first backboard, and the both sides of the extrados of described light guide plate are fixedly connected with described second backboard; Described arc keeper is fixedly connected with described first backboard and described second backboard.Such as, the intrados bending direction of arcuate structure and the cambered surface bending direction of light guide plate consistent.Such as, the curvature of arcuate structure is identical with the curvature of light guide plate.Such as, described arc keeper at least comprises two ends are connected two ends main part with one, and described arc keeper can for extending to the arcuate structure of two ends from its main part; Two ends of described arc keeper are fixedly connected with described second backboard being positioned at described light guide plate extrados both sides respectively, and the main part of described arc keeper is fixedly connected with described first backboard.
Fig. 1 b is the schematic three dimensional views of an embodiment mean camber back light unit of the present utility model; Fig. 1 c is that the light guide plate extrados of an embodiment mean camber back light unit of the present utility model installs back board structure schematic diagram.With reference to Fig. 1 b and Fig. 1 c, the extrados 11 of curved surface light guide plate 1 is fixed respectively by first backboard 2 in extrados 11 centre position and two two the second backboards 3 being positioned at extrados 11 both sides being positioned at light guide plate 1.With reference to Fig. 1 a, described curved surface light guide plate 1 comprises intrados 12 respect to one another and extrados 11, two curved ends 13 respect to one another and two sides 14, centre position is the position of extrados 11 about light guide plate between two sides 14 of described light guide plate 1, and both sides can be such as the position of extrados 11 near two sides 14 of light guide plate 1 (comprising this two sides) of light guide plate 2.With reference to Fig. 1 c, the direction that the first backboard 2 and the second backboard 3 such as can be substantially parallel along two sides with light guide plate 1 is arranged.Further, the first backboard 2 such as can be substantially identical with two sides of light guide plate 1 with the length of the second backboard 3, with while not increasing back light unit size, effectively fixes light guide plate 1.First backboard 2 and the second backboard 3 such as also can form a fixed connection simultaneously on the extrados 11 and upper and lower two curved ends 13 of light guide plate 1, to improve structural stability further, the mode that the extrados 11 of this backboard and light guide plate 1 and upper and lower two curved ends 13 are all fixed does not exceed scope of the present utility model.In addition, the first backboard 2 is fixedly connected with at least one arc keeper 4 with the second backboard 3.Two curved ends 13 up and down for light guide plate shown in Fig. 1 b are all fixedly connected with an arc keeper 4 by the first backboard 2 with the second backboard 3, and this mode being all fixedly connected with arc keeper at upper and lower two curved ends 13 of light guide plate can make the structure of whole back light unit more stable.First backboard 2, second backboard 3 and light guide plate 1 can be located by arc keeper 4, prevent light guide plate 1 from deformation occurring.The curvature of arc keeper 4 and cambered surface bending direction such as can with the curvature of curved surface light guide plate 1 and cambered surface bending direction substantially identical.In addition, also the extrados 11 of curved surface light guide plate 1 can be fixed by multiple backboard be separated from each other, such as 5 or 7.By increasing the number of backboard, the structure of curved surface light guide plate also can be made more stable.
In one embodiment, arc keeper can be string configuration.Continue with reference to Fig. 1 b, the arc keeper that Fig. 1 b exemplifies is string configuration.Described arc keeper 4 is the arcuate structure extended to two ends in the middle of it, intermediate portion arranges the first location structure 41, two ends respectively arrange second location structure 42, on the other side, first backboard 2 is arranged the second retaining structure 31 the first retaining structure 21, second backboard 3 matched with the first location structure 41 being arranged and matches with the second location structure 42.As shown in Figure 1, such as, two arc keepers 4 can be separately positioned on two curved ends 13 up and down of light guide plate 1.Specifically, arc keeper 4 is fixed on two curved ends 13 of light guide plate about 1 by the first backboard 2 and the second backboard 3.As previously mentioned, such as, the radian of arc keeper 4 can be substantially identical with the radian of light guide plate 1, and the bending direction of arc keeper is such as also identical with the cambered surface bending direction of curved surface light guide plate 1.
In one embodiment, arc keeper 4 also can be the structure extended along the first direction substantially parallel with light guide plate 1 extrados in the side away from described light guide plate 1 extrados of the first backboard 2 and the second backboard 3, many arc keepers 4 parallel to each other such as can be set, and fixed connection point is set at each arc keeper 4 and the first backboard 2 and the second backboard 3 intersection, by arranging multiple arc keeper 4, the structural strength of curved surface back light unit effectively can be improved.
Fig. 2 shows the schematic diagram arranging location structure on arc keeper.With reference to Fig. 2, the such as centre position of arc keeper 4 arranges first location structure 41, such as, be pilot hole; And the second location structure 42 is set at its two ends, such as the second location structure 42 is strip groove.Arc keeper 4 is fixed by the first retaining structure 21 on its first location structure 41 and the first backboard 2, and the first retaining structure 21 can be such as projection; The second location structure 42 that the two ends of arc keeper 4 are arranged by its two ends respectively be positioned at the second retaining structure 31 that second backboard 3 at two ends is arranged and fasten, the second retaining structure 31 also can be such as projection.Can also a grab be set further near the pilot hole of arc locking member 4, after entering its pilot hole to make projection, hooks projection further, prevent it from removing from pilot hole.In addition, those skilled in the art are known, are located at the location structure on arc keeper 4 and the retaining structure on backboard can exchange.
In one embodiment, the first location structure 41 of arc keeper 4 can also be a threaded hole, and the first retaining structure 21 on the first backboard 2 is the stud matched with described threaded hole.Snap fit is for be screwed into stud in threaded hole.First location structure 41 can be also a stud, and the first retaining structure 21 is designed to threaded hole.
With reference to Fig. 2, the second location structure 42 of arc keeper can be groove, the second retaining structure 31 of the second backboard 3 be can with a kind of projection of described groove match.Projection such as can snap in described groove, and then issuable relative motion between restriction arc keeper 4 and the second backboard 3; The second retaining structure 31 on second backboard 3 also can be designed as groove, and the second location structure 31 of arc keeper 4 is designed to projection, and then realizes the engaging of arc keeper 4 and the second backboard 3.Such as, the second location structure 42 can also be threaded hole, corresponding, and the second retaining structure 31 on the second backboard 3 is stud, and snap fit is be screwed into by the stud on the second backboard 3 in the threaded hole of arc keeper two ends setting; As mentioned above, the threaded hole on backboard and arc keeper and the setting of stud also interchangeable.
In one embodiment, arc keeper 4 also can be many, and the two ends of each are all connected with modes such as projections with stud or perforate by such as screw thread with the second backboard 3.And then after the first backboard 2 and the second backboard 3, form many along the first direction arc keeper 4 substantially parallel with described curved surface light guide plate 1.Corresponding, first backboard 2 arranges multiple retaining structure from top to bottom, and multiple retaining structure respectively with the arc keeper phase screens of correspondence position, screens mode can adopt prior art or the previously described mode of the utility model, to ensure the structural stability of curved surface light guide plate 1 further.
In one embodiment, arc keeper also can be the globoidal structure substantially covering light guide plate and backboard.The arc keeper with globoidal structure can be extend along the direction substantially parallel with light guide plate 1 extrados away from light guide plate 1 extrados side at the first backboard 2 and the second backboard 3.This arc keeper size with globoidal structure such as can be substantially identical with light guide plate 1.The intrados that can have an arc keeper of globoidal structure this and the first backboard 2 and the second backboard 3 intersection are arranged carries out multiple spot and fixes, and improves structural stability further.
In one embodiment, such as, light guide plate 1 can be fixed on backboard respectively by moulding frame.With reference to Fig. 1 b, such as, second can be adopted to mould members of frame 52 and to fix from the left and right sides by light guide plate 1 and the second backboard 3 respectively, adopt first to mould members of frame 51 and fix from upper and lower both sides by light guide plate 1 and described first backboard 2.Such as, described first to mould members of frame 51 can for resilient material, such as, be vulcanie part.Vulcanie to be defined as when such as tractive first backboard or the second backboard make light guide plate generation deformation vulcanie and synchronous bending only occurs with light guide plate in direction of draw, and can not produce and subside or the elastomeric material of other deformation; Described second to mould members of frame 52 can for rigid material, such as, be rigid plastic part.Such as, can also doped with fine wire in described vulcanie, to improve its one-dimensional linear bending strength.
In one embodiment, the intrados side of curved surface light guide plate 1 is also fitted with various blooming piece, such as diffusion barrier or prism film.The extrados side of curved surface light guide plate 1 is such as also fitted with reflector plate.The outside of reflector plate such as can also fit tightly a kind of hard films; And the second backboard is provided with from replying stator, spooling is distinguished described from replying on stator in the two ends of hard films; In described light guide plate generation deformation and when described reflector plate is exerted pressure, described hard films discharges from described from reply stator, to make described hard films compress described reflector plate all the time in described light guide plate deformation process, guarantee that described reflector plate and described light guide plate fit tightly.The flatness of light guide plate 1 extrados and/or reflector plate can be improved outward in light guide plate 1 extrados and/or reflector plate this hard films of fitting.Described hard films is defined as the thickness when being subject to the acting force that reflector plate applies and does not change and with described reflector plate, the diaphragm of synchronous deformation can occur.Such as hard films can be flexible membrane or rigid film.These blooming pieces such as can adopt hangers be positioned at above-mentioned first mould members of frame and/or second mould members of frame setting groove in, and be enclosed in first with adhesive tape and mould members of frame and/or second and mould in the groove of members of frame, or diaphragm hangers fulcrum or draw-in groove etc. are set on the first backboard 2 and/or the second backboard 3 fix these blooming pieces.
The manufacture method that embodiment still provides a kind of curved surface back light unit of the present utility model, comprises the steps:
Light guide plate and arc keeper are provided; Wherein, described light guide plate is planar lightguide, comprises the first plane respect to one another and the second plane, with the first plane and the second Plane intersects and two sides respect to one another and with the first plane and the second Plane intersects and two end faces respect to one another;
Make described light guide plate bending along described first plane to the direction of described second plane, formed with described first plane for intrados, described second plane is the light guide plate with curved-surface structure of extrados; Meanwhile, two described end faces are also bent to two curved ends;
By described arc keeper, the described light guide plate forming curved-surface structure is fixed, obtain curved surface light guide plate.
In one embodiment, the method also comprises provides at least one first backboard and at least two the second backboards; Wherein, described light guide plate is fixed from the centre position of described second plane of described light guide plate by described first backboard, and described light guide plate is fixed from the two ends of described second plane by two described second backboards respectively;
Described arc keeper at least comprises two ends and the main part being connected two ends, and described main part is the arcuate structure extended to two ends;
Two ends of described arc keeper are connected with described second backboard respectively; The described main body section of described arc keeper is in the described second plane side of described light guide plate; Make described first backboard drive described light guide plate to described main part one lateral movement of described arc keeper, and after described first backboard contacts with described arc keeper, described first backboard is fixedly connected with described arc keeper.
In one embodiment, the method also comprises provides at least one first backboard and at least two the second backboards; Wherein, described light guide plate is fixed from the centre position of described second plane of described light guide plate by described first backboard, and described light guide plate is fixed from the two ends of described second plane by two described second backboards respectively;
Described arc keeper at least comprises two ends and the main part being connected two ends, and described main part is the arcuate structure extended to two ends;
The described main part of described arc keeper is fixedly connected with along two curved ends of described light guide plate with described first backboard; Wherein, two ends of described arc keeper extend to outside described light guide plate to the third direction of the described first plane side of described light guide plate; Make described second backboard drive described light guide plate to move to described third direction, and after described second backboard contacts with described arc keeper, described second backboard is fixedly connected with described arc keeper.
Fig. 3 a-3c shows an embodiment of curved surface back light unit manufacture method of the present utility model.With reference to Fig. 3 a, second plane of planar lightguide is fixed respectively by first backboard 2 and two the second backboards 3, wherein, the first backboard 2 is fixed from the centre position of light guide plate second plane, and two the second backboards 3 are fixed from the two ends of this plane respectively.Adopt two arc keepers 4 with string configuration respectively from two end faces and the second backboard 3 phase screens up and down of the second backboard 3, Fig. 3 b is vertical view in this case.Tractive first backboard 2 makes it to drive light guide plate to move to arc keeper 4, even if arc light guide plate is bending along the first plane to the direction of the second plane, and when described first backboard contacts with described arc keeper, such as, when can be between upper and lower two arc keepers 4, be arranged at the first location structure location of the first retaining structure on the first backboard 2 by arc keeper 4.Fig. 3 c is the schematic diagram that in an embodiment, the first backboard engages the curved surface structure of backlight unit of rear gained with arc keeper.In Fig. 3 c, the first location structure is such as a kind of pilot hole, and the first retaining structure is projection, after projection enters pilot hole, then hooks projection by grab 43, prevents it from skidding off from pilot hole.This mode being driven planar lightguide motion acquisition curved surface light guide plate by tractive first backboard, only need be applied acting force to the first backboard, slowly change curved surface light guide plate into make planar lightguide.Adopt the curved surface light guide plate obtained in this way, the deformation quantity of planar lightguide reduces from intermediate portion gradually to two ends.
The mode of moving at the intrados adopting such as tractive first backboard drive light guide plate to arc keeper obtains in the method for curved surface back light unit, as mentioned above, first backboard 2 and the engaging of arc keeper 4 can be that screw thread and stud coordinate, and also can make coordinating of projection and through hole and grab.With reference to Fig. 3 b and 3c, second location structure 42 at the two ends of arc keeper 4 can be such as long strip type groove, and groove such as can comprise primary importance and the second place, and the second retaining structure 31 that the second backboard 3 fastens with groove can be such as projection.Before tractive first backboard 2, the projection on the second backboard 3 is sticked in the primary importance shown in Fig. 3 b; Along with the first backboard drives light guide plate to move to arc keeper 4, because light guide plate bends gradually, projection on two described second backboards 3 also can along long strip type concave slot sports, and the first backboard 2 move to contact with arc keeper time, such as, when can be the position between lower arcuate keeper, projection on second backboard 3 moves to the second place of groove shown in Fig. 3 c, and realizes the engaging of projection and groove in the second place.With reference to Fig. 3 b and 3c, on arc keeper 4 two ends, the primary importance of strip groove is positioned at outside relative to the second place, and two second places are positioned at inner side.This is because when light guide plate is flat state, the projection on two the second backboards is distant, therefore is sticked in the primary importance outside strip groove respectively, with reference to Fig. 3 b; Along with light guide plate bends gradually to arc keeper, distance between two projections reduces gradually, therefore two projections are all along respective strip groove move toward one another, and after light guide plate motion puts in place, finally be fastened on the second place inside strip groove, with reference to Fig. 3 c.
In one embodiment, arc keeper is string configuration, adopt two arc keepers 4 respectively from two ends up and down and the first backboard 2 phase screens of the first backboard 2, the two ends of arc keeper 4 light direction from the both sides up and down of light guide plate to light guide plate stretches out outside light guide plate, then make it to drive light guide plate to move to arc keeper 4 by tractive second backboard 3, and then make the both sides of the second plane of light guide plate bending along the second plane to the direction of the first plane, and the second backboard move to contact with arc keeper time, such as, when can be between upper and lower two arc keepers 4, located by arc keeper 4.This tractive second backboard drives light guide plate motion to need on two the second backboards, to apply such as substantially identical acting force simultaneously, to make the both sides of planar lightguide simultaneously close to the two ends of arc keeper, and then planar lightguide slowly forms curved-surface structure from its both sides to centre.After planar lightguide changes curved surface light guide plate into, its deformation quantity for reducing gradually in the middle of two side direction.
Light guide plate is driven to obtain in the method for curved surface back light unit to the mode that arc keeper moves adopting such as tractive second backboard, as mentioned above, first backboard 2 and the snap-in structure of arc keeper 4 can be that screw thread and stud coordinate, also coordinating of projection and through hole and grab can be made, or other structure being fixed to one another or engaging; Second location structure at arc keeper 4 two ends can be such as through-hole structure, and corresponding, the retaining structure on the second backboard can be projection, and after tractive second backboard makes it contact with arc keeper, projection coordinates with through hole and realizes screens; Also further a grab can be respectively set at arc keeper 4 two ends, after entering through hole to make projection, fix with grab further, prevent to come off, improve structural stability further.Second location structure at the two ends of arc keeper 4 also can be screw thread or stud, and corresponding with it, the retaining structure on two the second backboards can be stud and screw thread.By coordinating of screw thread and stud, realize the fixing of arc keeper 4 and the second backboard 2.
In one embodiment, when adopting the mode as tractive first backboard to prepare the method for curved surface back light unit, such as the first backboard can be move to the position overlapping at least partly with arc keeper, to make both engagings more firm.Lap position refers in tractive light guide plate and after making it to be converted into curved-surface structure, the rectilinear direction on the intrados or extrados of curved surface light guide plate is watched the first backboard and overlaps with arc keeper at least partly.
In one embodiment, when adopting the mode of such as tractive second backboard to prepare the method for curved surface back light unit, the second backboard can be such as move to the position overlapping at least partly with described arc keeper, to make both engagings more firm.Here overlap refers at tractive second backboard and after making it to be converted into curved-surface structure, overlaps at least partly along the rectilinear direction on curved surface light guide plate intrados or extrados being watched the second backboard with arc keeper.
In one embodiment, when driving light guide plate motion to make backboard, the planarization of the reflector plate of the second plane that light guide plate is bending gradually and the laminating of this second plane of light guide plate is unaffected, can to fit outward hard films in light guide plate and reflector plate.As previously mentioned, described hard films is defined as the thickness when being subject to the acting force that reflector plate applies and does not change and can the diaphragm of deformation synchronous with described reflector plate, such as, be flexible membrane.Further, such as hard films can be rollable material, and arranges respect to one another from replying stator (being equivalent to rotating shaft) in the outer edge of the second backboard of both sides.The two ends of rollable hard films are wrapped on reply stator, the center section of hard films are fixed on the centre position of the first backboard simultaneously.Then this rigidity hard films can move at the first backboard and backward near arc keeper to when final screens is in arc keeper, and face is arc surfaced by plane deformation under slowly press against of light guide plate and reflector plate, and length also will be elongated.The change of hard films length can produce certain tension force, and this tension force can drive and rotate from replying stator, and then the part hard films be wrapped in from replying on stator is discharged.This hard films is wound in the pressing structure of freely replying stator can according to the radian of curved surface back light unit from Row sum-equal matrix burst size, and hard films can be prevented stressed excessive and be damaged.Such as, both can be arranged on the second backboard of both sides from reply stator and (be equivalent to respectively arrange a rotating shaft at two the second backboards away from the first backboard side), also will can be arranged at outside the second backboard from reply stator by transition pulley.Main Function from reply stator is the carrier be wound around as hard films, and tractive first backboard or the second backboard time the automatic hard films that is wound around of release portion as required, make hard films not only can closely pressing light guide plate and reflector plate, make the extrados of light guide plate and reflector plate more smooth in motion process, hard films also can be avoided stressed excessive and the infringement of hard films occurs.Hard films and certainly reply stator may reside among final products, also can be removed in the final product.
In one embodiment, in order to make the better effects if of the Bending Deformation of light guide plate, can give light guide plate its certain pre-deformation.Such as when adopting the mode of tractive first backboard or tractive second backboard to prepare curved surface back light unit, before tractive, light guide plate first can be made to produce certain pre-deformation to its direction of motion, to reduce the possibility of light guide plate in traction process generation defect, and then make the cambered surface curvature transition of final curved surface light guide plate more level and smooth.
In one embodiment, can be concave inward structure by the net-pont design of light guide plate.This is because planar backlight unit is in curved surface back light unit transition process, light guide plate can produce relative displacement with other parts, and this relative displacement can make to produce between light guide plate and other parts to rub, and may damage the site that light guide plate designs.In light guide plate, the infringement of site can produce the unexpected reflection of light, can cause the problems such as light leak or brightness disproportionation, can be therefore concave inward structure by the net-pont design in light guide plate.
In one embodiment, with reference to Fig. 3 a, the left and right sides of light guide plate 1 can be moulded members of frame 52 respectively by second and is fixed on the second backboard 3, and the both sides up and down of light guide plate 1 can be moulded members of frame 51 by first and are fixed on the first backboard 2.Be curved surface state because light guide plate 1 needs from the basic state transfer for plane, in the process, be positioned at first of light guide plate about 1 both sides and mould members of frame 51 and also to bend deformation.Therefore, first moulds that members of frame 51 should adopt can the resilient material of deformation, such as, can adopt vulcanie.In order to improve the bending strength that first moulds members of frame 51 further, tinsel can be added in rubber, such as steel wire, can better coordinate the first backboard 2, second backboard 3, light guide plate 1 and arc keeper 4 etc. to realize the transformation of planar backlight unit to curved surface back light unit.Second moulds members of frame 52 such as can adopt rigid plastic.
One of the present utility model embodiment still provides a kind of curved-surface display device comprising curved surface back light unit of the present utility model.
The method manufacturing curved-surface display device can comprise the preparation method of above-described curved surface back light unit.Concrete example is as comprised two kinds of preparation methods.A kind of for adopting above-described method to prepare curved surface back light unit, simultaneously, adopt the shaping front end display screen matched with this curved surface back light unit of prior art, and the curved surface back light unit adopting the utility model method to prepare is combined with the front end display part adopting prior art to prepare, obtain curved-surface display device.
Another method is: will substantially combine for the back light unit of planar structure mates with the display screen fore-end being substantially flat shape, such as front end display screen can carry out snap-fit with the grab on the sectional type backboard of sectional type chase and back light unit, fixes to make display screen fore-end and back light unit.After the manufacture of flat-faced screen completes, such as, adopt the mode of above-mentioned tractive first backboard, display screen front end is together bent backward with back light unit, and navigate in the screens groove of such as arc keeper after tractive puts in place, form camber display screen.
In order to improve the display effect of display device prepared by the method further, such as chase inside surface and display screen contact portion can attach with siliceous rubber strip, hinder display screen to prevent from squeezing in traction process.In addition, the left and right sides of display screen mould members of frame and display screen contact position arranges soft rubber material, to wear and tear in traction process display screen to prevent from moulding members of frame.
In one embodiment, also can when tractive such as the first backboard, the outer rim of tractive display screen simultaneously, can follow display screen together deformation.This is that deformation is comparatively difficult, may be caused the infringement of display screen by the mode of independent tractive backboard because traction force is excessive because the intensity of frame is general comparatively large.
In one embodiment, such as can adjust the design of the color membrane substrates in display screen, be the TFT elemental area being a bit larger tham correspondence position by the colored filter RGB area design on color membrane substrates, prevent from, in display screen bending deformation process, contraposition light leak occurs.In addition, the polystyrene thick for liquid crystal cell box in support displays should have higher intensity, light leak can not occur during to ensure that display is stressed.
Mutually can combine between above specific embodiment, not exceed scope of the present utility model, and better combined effect can be brought.
Claims (16)
1. a curved surface back light unit, comprises light guide plate, one or more arc keeper; Described light guide plate, for extending the curved surface light guide plate formed to both sides along first direction from intermediate position, comprises intrados, extrados; Second direction vertical with described first direction in the intrados of described light guide plate and the face of extrados is rectilinear direction; At least one position of at least described centre position of described light guide plate and every side in described centre position is fixedly connected with the arcuate structure of at least same described arc keeper, and the cambered surface bending direction of described light guide plate is consistent with the bending direction of the described arcuate structure of this arc keeper.
2. a kind of curved surface back light unit according to claim 1, wherein, described arc keeper at least comprises two ends are connected two ends main part with one, and described main part is the arcuate structure extended to two ends along described first direction; One of being at least fixedly connected with of the extrados of described main part and described light guide plate and intrados.
3. curved surface back light unit according to claim 1, also comprises at least one first backboard and at least two the second backboards; Wherein, the centre position of the described extrados of described light guide plate is fixedly connected with described first backboard, and the both sides of the described extrados of described light guide plate are fixedly connected with described second backboard; Described arc keeper is fixedly connected with described first backboard and described second backboard.
4. curved surface back light unit according to claim 3, wherein, described arc keeper is string configuration.
5. curved surface back light unit according to claim 4, wherein, described arc keeper at least comprises the first location structure be positioned in the middle of it and the second location structure being positioned at its two ends; Described first backboard at least comprises the first retaining structure matched with described first location structure, described second backboard at least comprises the second retaining structure matched with described second location structure.
6. curved surface back light unit according to claim 5, wherein, described first location structure comprises pilot hole and grab, and described first retaining structure is projection; Or described first location structure is projection, described first retaining structure comprises pilot hole and grab.
7. curved surface back light unit according to claim 6, wherein, described second location structure is groove, and described second retaining structure is projection; Or described second location structure is projection, described second retaining structure is groove.
8. the curved surface back light unit according to claim 1-7 any one, wherein, the curvature of described arc keeper is identical with the curvature of described light guide plate.
9. the curved surface back light unit according to claim 3-7 any one, wherein, the described intrados side of described light guide plate is also fitted with blooming piece; The described extrados side of described light guide plate is also fitted with reflector plate; The outside of described reflector plate is fitted with hard films; Described second backboard is provided with oneself and replys stator, and spooling is distinguished described from replying on stator in the two ends of described hard films; In described light guide plate generation deformation and when described reflector plate is exerted pressure, described hard films discharges from described from reply stator, to make described hard films compress described reflector plate all the time in described light guide plate deformation process, guarantee that described reflector plate and described light guide plate fit tightly.
10. curved surface back light unit according to claim 3, wherein, described light guide plate also comprises two sides and two and extends and curved end respect to one another along described first direction; Described two curved ends are moulded members of frame respectively by one first and are fixed on described first backboard, and described two sides are moulded members of frame respectively by one second and are fixed on described second backboard.
11. curved surface back light units according to claim 10, wherein, described first to mould members of frame be resilient material, and described second to mould members of frame be rigid material.
12. curved surface back light units according to claim 11, wherein, described resilient material is vulcanie, and doped with fine wire in described vulcanie.
13. curved surface back light units according to claim 1, also comprise second and mould members of frame and at least one first backboard; Wherein, the centre position of the described extrados of described light guide plate is fixedly connected with described first backboard, and the both sides of the described extrados of described light guide plate described with one second are moulded members of frame and are fixedly connected with respectively; Described arc keeper is moulded members of frame with described first backboard and described second in said first direction and is fixedly connected with.
14. 1 kinds of display device comprised as the curved surface back light unit in claim 1-13 as described in any one.
15. display device according to claim 14, comprise array base palte, wherein, are provided with padded coaming between the edge of described back light unit and described array base palte edge.
16. display device according to claim 15, also comprise color membrane substrates, and wherein, the colored filter area on described color membrane substrates is greater than the elemental area described array base palte corresponding to described colored filter.
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| CN201520790776.8U CN204945578U (en) | 2015-10-12 | 2015-10-12 | Curved surface back light unit and display device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105259607A (en) * | 2015-10-12 | 2016-01-20 | 京东方科技集团股份有限公司 | Curved surface backlight unit, display device, and manufacture method |
| CN110264884A (en) * | 2019-06-28 | 2019-09-20 | 厦门天马微电子有限公司 | A kind of backlight module and display device |
| CN113066383A (en) * | 2021-03-31 | 2021-07-02 | 深圳创维－Rgb电子有限公司 | Display device |
-
2015
- 2015-10-12 CN CN201520790776.8U patent/CN204945578U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105259607A (en) * | 2015-10-12 | 2016-01-20 | 京东方科技集团股份有限公司 | Curved surface backlight unit, display device, and manufacture method |
| WO2017063494A1 (en) * | 2015-10-12 | 2017-04-20 | 京东方科技集团股份有限公司 | Curved surface backlight unit, manufacturing method and display device |
| US10108035B2 (en) | 2015-10-12 | 2018-10-23 | Boe Technology Group Co., Ltd. | Curved backlight unit, manufacturing method thereof and display device |
| CN110264884A (en) * | 2019-06-28 | 2019-09-20 | 厦门天马微电子有限公司 | A kind of backlight module and display device |
| CN113066383A (en) * | 2021-03-31 | 2021-07-02 | 深圳创维－Rgb电子有限公司 | Display device |
| CN113066383B (en) * | 2021-03-31 | 2023-04-07 | 深圳创维－Rgb电子有限公司 | Display device |
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