CN101749606B - Backlight module avoiding warping of membrane - Google Patents
Backlight module avoiding warping of membrane Download PDFInfo
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- CN101749606B CN101749606B CN2010101037382A CN201010103738A CN101749606B CN 101749606 B CN101749606 B CN 101749606B CN 2010101037382 A CN2010101037382 A CN 2010101037382A CN 201010103738 A CN201010103738 A CN 201010103738A CN 101749606 B CN101749606 B CN 101749606B
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Abstract
The invention discloses a backlight module avoiding warping of a membrane. The backlight module mainly comprises an outer frame and a first prism sheet. The outer frame mainly comprises side walls, and inner sides of the side walls enclose an internal region. The first prism sheet is arranged in the internal region and is provided with a plurality of prism columns which are parallel to each other side by side and extend towards the direction of a first prism. The first prism sheet is provided with a surrounding edge which comprises a first side edge and a second side edge that are connected and are mutually vertical. The prism columns comprise a center prism column which is positioned at the center of all prism columns. The center prism column has two points of intersection with the surrounding edge, and a first interval D1 exists between the points of intersection and the side walls of the outer frame. The surrounding edge is provided with an end point which is positioned at the position far away from the center prism column. A second interval D2 exists between the end point and the side walls of the outer frame, wherein the first interval D1 is more than the second interval D2.
Description
Technical field
The present invention relates to a kind of backlight module; Particularly, the present invention relates to a kind of backlight module that blooming piece produces warpage that reduces.
Background technology
The display apparatus of display panel and use display panel becomes the main flow of all kinds of display device gradually.The display screens of flat-plate type monitor, mobile phone and the digital camera of flat-surface television, PC and the kneetop computer of for example various panel display screen, family expenses etc. are the product of a large amount of use display panels.Particularly the market demand of liquid crystal indicator is significantly grown up in recent years, and for the fluid,matching crystal device reaches apparent requirement on function, the employed backlight module design of liquid crystal indicator also becomes more diversified.
Figure 1A and Figure 1B are depicted as the synoptic diagram of traditional backlight module.Traditional backlight module includes housing 10 and brightening piece 30.Brightening piece 30 is arranged in the housing 10, for changing the optical property that the below light source produces light, meets the backlight of display panel needs to produce.Be formed with a plurality of prism columns 31 on the brightening piece 30, and all move towards 33 and extend distribution along prism.When backlight module or the display device that comprises backlight module are heated, for example carry out environmental testing or actual space in poor heat radiation is used, then brightening piece 30 promptly can expanded by heating, and area is increased.Because brightening piece 30 is provided with a plurality of prism columns 31, so brightening piece 30 can be length than the spread length that vertical prism moves towards on 33 directions at the spread length that moves towards along prism on 33 directions.
Shown in Figure 1B, when brightening piece 30 moves towards 33 when expand stretching at the edge prism, promptly can with sidewall 11 interferences or the conflict of housing 10.Because housing 10 volume inside are limited, when brightening piece 30 and sidewall 11 are inconsistent, promptly can produce warpage or wavy, and then the processing of light is impacted, reduce the quality of output light.
Summary of the invention
A purpose of the present invention is to provide a kind of backlight module, can reduce its inner contained blooming piece and be heated and produce the situation of warpage.
A purpose of the present invention is to provide a kind of backlight module, can improve the quality backlight that it provides.
A purpose of the present invention is to provide a kind of backlight module, can adapt to the working environment of higher temperatures.
Backlight module mainly comprises the housing and first prismatic lens.Housing is mainly surrounded by sidewall, and the inboard of sidewall is surrounded by interior zone.First prismatic lens is arranged in the interior zone, is formed with a plurality of prism columns on it.These a little prism columns are parallel to each other side by side, and move towards to extend along first prism jointly.First prismatic lens also has around the edge, wherein includes to join and orthogonal first lateral margin and second lateral margin.Include center prism column in the prism columns, essence is positioned at the central authorities of whole prism columns.Center prism column with around the edge two intersection points are arranged, be separated with first space D mutually between the sidewall of intersection point and housing
1Around an end points is arranged on the edge in addition, be positioned at position away from center prism column.Be separated with second space D mutually between the sidewall of end points and housing
2, first space D wherein
1Greater than second space D
2
When first prismatic lens be heated or through with the environmental testing of temperature correlation after, first prismatic lens is walked upwards to produce bigger heat expansion deformation at first prism.In other words, promptly can be at the deformation quantity that stretches out on the position of intersecting point greater than the deformation quantity that on endpoint location, stretches out around the edge.Because first space D
1Greater than second space D
2Therefore, can reduce by first prismatic lens and walk upwards because of deformation and housing interference produce warpage or lumpy situation, and can take into account simultaneously at vertical first prism and walk reliability of positioning upwards at first prism.
Description of drawings
Figure 1A and Figure 1B are depicted as the synoptic diagram of traditional backlight module;
Fig. 2 is the embodiment element exploded view of backlight module;
Fig. 3 A to Fig. 3 D has the embodiment synoptic diagram of different first prisms when moving towards;
Fig. 4 A and Fig. 4 B are with the embodiment synoptic diagram of locating adhesive tape as first locating device;
Fig. 5 A and Fig. 5 B are with the embodiment synoptic diagram of card ear as first locating device;
Fig. 6 is the embodiment synoptic diagram that has rescinded angle on first prismatic lens;
Fig. 7 A and Fig. 7 B are the embodiment synoptic diagram that adds second prismatic lens;
Fig. 8 is the embodiment cut-open view that adds polaroid;
Fig. 9 is provided with the embodiment cut-open view of uneven surface for polaroid.
The main element symbol description
100 housings
110 sidewalls
111 flanges
130 interior zones
300 first prismatic lenses
310 prism columns
311 center prism column
313 intersection points
330 first prisms trend
350 around the edge
351 first lateral margins
352 second lateral margins
359 end points
500 first locating devices
501 locating slots
510,511 sides
700 rescinded angles
800 second prismatic lenses
810 prism columns
830 second prisms trend
850 second locating devices
900 polaroids
910 uneven surfaces
Embodiment
The invention provides a kind of backlight module; With preferred embodiment, this backlight module feed flow crystal device uses.Yet in different embodiment, also can power brain keyboard, mobile phone button, billboard and other of this backlight module need the device of planar light source to use.In preferred embodiment, above-mentioned liquid crystal indicator comprises a color liquid crystal display arrangement.Yet in different embodiment, above-mentioned liquid crystal indicator also can comprise monochromatic liquid crystal indicator.In addition, liquid crystal indicator general reference is used the display device of liquid crystal panel, comprises the LCDs etc. of LCD monitor, mobile phone and digital camera of LCD TV, PC and the kneetop computer of family expenses.
Fig. 2 is the element exploded view of the embodiment of backlight module.As shown in Figure 2, backlight module comprises the housing 100 and first prismatic lens 300.Housing 100 is preferable to be formed by plastics; Yet in different embodiment, also can metal or the formation of other materials.Housing 100 mainly can be surrounded by the structure of sidewall 110 according to straight-flanked ring, and the inboard of sidewall 110 surrounds interior zone 130.Interior zone 130 can supply light source, light guide plate, various blooming piece etc. are set, but demand is adjusted required ccontaining element.In preferred embodiment, first prismatic lens 300 can be the blooming piece of microstructures such as tool prism, for example: brightening piece; Yet in different embodiment, first prismatic lens 300 also can comprise the blooming piece of other different microstructures; For example have prism microstructure and the diffusion blooming piece of layouting etc. simultaneously.Visual actual demand adjustment.
As shown in Figure 2, first prismatic lens 300 is arranged in the interior zone 130.The preferable flange 111 that is formed with of sidewall 110 inner faces of housing 100 is for the bottom edge that directly or indirectly supports first prismatic lens 300.In other words, the bottom edge of first prismatic lens 300 can directly be placed on the flange 111, also can be positioned on the flange 111 across light guide plate or other blooming pieces.As shown in Figure 2, be formed with a plurality of prism columns 310 on first prismatic lens 300; These a little prism columns 310 preferable being parallel to each other side by side, and move towards 330 along first prism jointly and extend, that is to say that these a little prism columns 310 can have one first prism and move towards 330.First prismatic lens 300 also has around edge 350, wherein can include to join and orthogonal first lateral margin 351 and second lateral margin 352.In this embodiment, first lateral margin 351 is the minor face lateral margin; Second lateral margin 352 then is the long side edge.
Fig. 3 A is that first prism moves towards the embodiment synoptic diagram that 330 essence are parallel to first lateral margin 351.Shown in Fig. 2 and Fig. 3 A, include center prism column 311 in the prism columns 310, essence is positioned at the central authorities of whole prism columns 310.This place says that substantial middle position does not limit one and is decided to be Centromedian prism columns 310 positions, also can be and is distributed in 50% position of the position of central authorities in whole prism columns 310.Center prism column 311 with around edge 350 two intersection points 313 are arranged, intersection point 313 is separated with first space D 1 mutually with 110 of the sidewalls of housing 100.Around an end points 359 is arranged on the edge 350 in addition, end points be around on the edge 350 away from center prism column 311 a bit.In preferred embodiment, end points 359 be around on the edge 350 with two intersection points 313 in along around the identical position of edge computed range; In other words, end points 359 is halved the distance of 313 edges of two intersection points around edge 350.So in different embodiment, also can adopt around on the edge 350 with center prism column 311 vertical ranges farthest a bit, or calculate with other different modes and to produce.End points 359 is separated with second space D mutually with 110 of the sidewalls of housing 100
2, first space D wherein
1Greater than second space D
2
In the embodiment shown in Fig. 3 A, first prism move towards that 330 essence are parallel to first lateral margin 351 and essence perpendicular to second lateral margin 352.In this embodiment, when first prismatic lens 300 be heated or through with the environmental testing of temperature correlation after, first prismatic lens 300 moves towards can produce bigger heat expansion deformation on 330 at first prism.In other words, i.e. the deformation quantity that stretches out to side of second lateral margin 352 deformation quantity that can stretch out up greater than first lateral margin 351.In Fig. 3 A illustrated embodiment, the angle that first prism moves towards 351 of 330 and first lateral margins is roughly 0 degree.Yet with first lateral margin, 351 forwards (right side) is that the starting point and first prism move towards 330 angle towards being timing counterclockwise, when angle circle that first prism moves towards 351 of 330 and first lateral margins was between 22.5 degree and-22.5 degree, first lateral margin 351 on first prismatic lens 300 and second lateral margin 352 all had similar above-mentioned deformation behavior and relation.
In this embodiment, center prism column 311 falls within on second lateral margin 352 with intersection point 313 around edge 350; End points 359 then is positioned on first lateral margin 351.First space D
1Be the spacing of 110 of second lateral margin 352 and sidewalls; And second space D
2It then is the spacing of first lateral margin 351 and sidewall 110.Because first space D
1Greater than second space D
2Therefore, can reduce by first prismatic lens 300 and move towards on 330 to produce warpage or lumpy situation, and can take into account simultaneously at vertical first prism and move towards reliability of positioning on 330 because of deformation and housing 100 interferences at first prism.
Fig. 3 B is that first prism moves towards the embodiment synoptic diagram of 330 essence perpendicular to first lateral margin 351.In the embodiment shown in Fig. 3 B, first prism moves towards 330 essence, and essence is parallel to second lateral margin 352 perpendicular to first lateral margin 351.In this embodiment, when first prismatic lens 300 be heated or through with the environmental testing of temperature correlation after, first prismatic lens 300 moves towards can produce bigger heat expansion deformation on 330 at first prism.In other words, i.e. the deformation quantity that stretches out to side of second lateral margin 352 deformation quantity that can stretch out up less than first lateral margin 351.In Fig. 3 B illustrated embodiment, the angle that first prism moves towards 351 of 330 and first lateral margins is roughly 90 degree.Yet with first lateral margin, 351 forwards (right side) is that the starting point and first prism move towards 330 angle towards being timing counterclockwise, when angle circle that first prism moves towards 351 of 330 and first lateral margins was between 67.5 degree and 112.5 degree, first lateral margin 351 on first prismatic lens 300 and second lateral margin 352 all had similar above-mentioned deformation behavior and relation.
In this embodiment, center prism column 311 falls within on first lateral margin 351 with intersection point 313 around edge 350; End points 359 then is positioned on second lateral margin 352.First space D
1Be the spacing of 110 of first lateral margin 351 and sidewalls; And second space D
2It then is the spacing of second lateral margin 352 and sidewall 110.Because first space D
1Greater than second space D
2Therefore, can reduce by first prismatic lens 300 and move towards on 330 to produce warpage or lumpy situation, and can take into account simultaneously at vertical first prism and move towards reliability of positioning on 330 because of deformation and housing 100 interferences at first prism.
Fig. 3 C moves towards 330 embodiment synoptic diagram for another first prism.In the embodiment shown in Fig. 3 C, the angle that first prism moves towards 351 of 330 and first lateral margins is roughly 45 degree.In this embodiment, when first prismatic lens 300 be heated or through with the environmental testing of temperature correlation after, first prismatic lens 300 moves towards can produce bigger heat expansion deformation on 330 at first prism.In other words, promptly can be at the deformation quantity that stretches out on intersection point 313 positions greater than the deformation quantity that on end points 359 positions, stretches out around edge 350.That is to say that to move towards diagonal angle lateral margin and 110 spacings of sidewall of 300 be second space D 2 to vertical first prism on first prismatic lens; The spacing that parallel first prism moves towards 110 of 300 diagonal angle lateral margin and sidewalls is first space D 1.Because first space D
1Greater than second space D
2Therefore, can reduce by first prismatic lens 300 and move towards on 330 to produce warpage or lumpy situation, and can take into account simultaneously at vertical first prism and move towards reliability of positioning on 330 because of deformation and housing 100 interferences at first prism.With first lateral margin 351 is that the starting point and first prism move towards 330 angle towards being timing counterclockwise, when angle circle that first prism moves towards 351 of 330 and first lateral margins was between 112.5 degree and 157.5 degree, first lateral margin 351 on first prismatic lens 300 and second lateral margin 352 all had similar above-mentioned deformation behavior and relation.
In this embodiment, center prism column 311 falls within around the position of edge 350 near diagonal angles with intersection point 313 around edge 350, and this diagonal angle line direction moves towards 330 near being parallel to first prism, that is moves towards 330 with first prism and differ smaller angle; End points 359 then is positioned at around the position of edge 350 near another group diagonal angle, and this group diagonal angle trend is then near moving towards 330 perpendicular to first prism.Shown in Fig. 3 C, the sidewall 110 of housing 100 tilts with respect to first lateral margin 351 and second lateral margin 352; When near intersection point 313, sidewall 110 and bigger around the spacing at 350 at edge, and when near end points 359, sidewall 110 and less around the spacing at 350 at edge.In addition, in different embodiment, sidewall 100 can be not linear inclination also, adopts cambered surface formula or stepped inclination and change.Because first space D
1Greater than second space D
2Therefore, can reduce by first prismatic lens 300 and move towards on 330 to produce warpage or lumpy situation, and can take into account simultaneously at vertical first prism and move towards reliability of positioning on 330 because of deformation and housing 100 interferences at first prism.
Fig. 3 D moves towards 330 embodiment synoptic diagram for another first prism.In the embodiment shown in Fig. 3 D, the angle that first prism moves towards 351 of 330 and first lateral margins is 135 degree.In this embodiment, when first prismatic lens 300 be heated or through with the environmental testing of temperature correlation after, first prismatic lens 300 moves towards can produce bigger heat expansion deformation on 330 at first prism.In other words, promptly can be at the deformation quantity that stretches out on intersection point 313 positions greater than the deformation quantity that on end points 359 positions, stretches out around edge 350.With first lateral margin 351 is that the starting point and first prism move towards 330 angle towards being timing counterclockwise, when angle circle that first prism moves towards 351 of 330 and first lateral margins was between 22.5 degree and 67.5 degree, first lateral margin 351 on first prismatic lens 300 and second lateral margin 352 all had similar above-mentioned deformation behavior and relation.
In this embodiment, center prism column 311 falls within around the position of edge 350 near diagonal angles with intersection point 313 around edge 350, and this diagonal angle line direction moves towards 330 near being parallel to first prism, that is moves towards 330 with first prism and differ smaller angle; End points 359 then is positioned at around the position of edge 350 near another group diagonal angle, and this group diagonal angle trend is then near moving towards 330 perpendicular to first prism.Shown in Fig. 3 D, the sidewall 110 of housing 100 tilts with respect to first lateral margin 351 and second lateral margin 352; When near intersection point 313, sidewall 110 and bigger around the spacing at 350 at edge, and when near end points 359, sidewall 110 and less around the spacing at 350 at edge.That is to say that to move towards diagonal angle lateral margin and 110 spacings of sidewall of 300 be second space D 2 to vertical first prism on first prismatic lens; The spacing that parallel first prism moves towards 110 of 300 diagonal angle lateral margin and sidewalls is first space D 1.In addition, in different embodiment, sidewall 100 can be not linear inclination also, adopts cambered surface formula or stepped inclination and change.Because first space D
1Greater than second space D
2Therefore, can reduce by first prismatic lens 300 and move towards on 330 to produce warpage or lumpy situation, and can take into account simultaneously at vertical first prism and move towards reliability of positioning on 330 because of deformation and housing 100 interferences at first prism.
Fig. 4 A and Fig. 4 B are with the embodiment synoptic diagram of locating adhesive tape as first locating device.Shown in Fig. 4 A, first prismatic lens 300 have first locating device 500 around edge 350, to locate first prismatic lens 300 on housing 100.The 500 preferable settings of first locating device are adjacent to the position of end points 359.Because first prismatic lens 300 is less in the deformation that end points 359 is produced when being heated, therefore be fit to be provided with first locating device 500.In this embodiment, first locating device 500 is a locating adhesive tape; One end of locating adhesive tape fits on first prismatic lens 300 position near end points 359, and the other end then fits on the housing 100 position corresponding to end points 359.In the embodiment shown in Fig. 4 A, end points 359 is positioned at the central authorities of first lateral margin 351, and the formed locating device 500 of locating adhesive tape then fits on first lateral margin 351.Yet in the embodiment shown in Fig. 4 B, end points 359 is positioned at the position around close diagonal angle on the edge 350, and the formed locating device 500 of locating adhesive tape promptly cooperates the position that is attached to the corner, diagonal angle.
Fig. 5 A and Fig. 5 B are with the embodiment synoptic diagram of card ear as first locating device.In the embodiment shown in Fig. 5 A, first locating device 500 is by being formed around the card ear on the edge 350.Be formed with corresponding locating slot 501 on the housing 100 this moment, for the card ear that holds as first locating device 500, to locate whole first prismatic lens 300.In preferred embodiment, shown in Fig. 5 A, the card ear has a plurality of sides 510,511, wherein moves towards the spacing d of the immediate side 511 of 330 orthogonal directions and locating slot 501 sides with first prism
1Bigger, and can be greater than the spacing d of other sides 510 with locating slot 501 sides
2In other words, direction is near moving towards 330 side 511 perpendicular to first prism on the card ear, and the spacing of itself and locating slot 501 sides can be big than the spacing of other sides 510.
Shown in Fig. 5 A, when first locating device 500 (card ear) when being formed at first lateral margin 351, first locating device 500 can form a rectangle.Remove outside the side that connects first prismatic lens 300, other has three sides 510,511; The side 511 that wherein is positioned at both sides promptly moves towards 330 perpendicular to first prism, therefore have and locating slot 501 sides between big spacing d
1Because first prismatic lens 300 is when being heated, first locating device 500 also can produce expansion deformation, therefore the default bigger spacing of preferable need think in response to.
And in the embodiment shown in Fig. 5 B, when cooperating the first different prisms to move towards 330 and when first locating device 500 is arranged at the corner of first prismatic lens 300, first locating device, the 500 preferable prominent shapes of point that form, and remove outside the side that connects first prismatic lens 300, still have four sides 510,511; Wherein projecting part divides to be extended by two orthogonal sides 510 and forms.The side 511 that forms the prominent shape of point can approach parallel first prism than other sides 510 and move towards 330.Form the side 511 of the prominent shape of point and the spacing d of locating slot 501 sides this moment
2Promptly can be less than the spacing d of other sides 510 with locating slot 501 sides
1
Fig. 6 is the embodiment synoptic diagram that has rescinded angle on first prismatic lens.In the embodiment shown in fig. 6, first prismatic lens 300 forms rectangle, therefore has four corners; Yet in different embodiment, first prismatic lens 300 also can have difformity, therefore forms the corner of varying number.As shown in Figure 6, the corner of close intersection point 313 can form rescinded angle 700, to increase by first prismatic lens 300 around the spacing of edge 350 at corner portions located and housing 100.After forming rescinded angle 700, can be greater than second space D 2 around edge 350 in the spacing of rescinded angle 700 locational ora terminalis and housing 100 sidewalls 110.By this design, can reduce by first prismatic lens 300 and on the corner, interfere the chance of conflicting with housing 100.
Fig. 7 A and Fig. 7 B are the embodiment synoptic diagram that adds second prismatic lens.Shown in Fig. 7 A, backlight module can further comprise second prismatic lens, 800 superimposed first prismatic lens, 300 belows that are arranged at.In preferred embodiment, have a plurality of prism columns 810 on second prismatic lens 800, and move towards 830 according to second prism and extend; Wherein second prism moves towards 830 preferable essence and is orthogonal to first prism and moves towards 330.Because first prism moves towards 330 preferable and second prisms and moves towards 830 essence quadratures, therefore can form rescinded angle near the center prism column of second prismatic lens 800 and corner around the intersection point at edge, to increase by second prismatic lens around the spacing of edge at corner portions located and housing 100, and second prismatic lens 800 can not form rescinded angle on the corner that forms rescinded angle 700 on first prismatic lens 300, but directly projection is exposed between rescinded angle 700 and the sidewall 110.
As also being provided with second locating device 850 on first locating device, 500, the second prismatic lenses 800 that can be provided with on aforementioned first prismatic lens 300.In the embodiment shown in Fig. 7 A, second locating device 850 is arranged on second prismatic lens 800 and is exposed to rescinded angle 700 part outward.Shown in Fig. 7 A, second locating device 850 is formed by locating adhesive tape, and fits in housing 100 and second prismatic lens 800 and be exposed to the outer part of rescinded angle 700.Yet in the embodiment shown in Fig. 7 B, second locating device 850 also can be formed by the card ear, and is contained in the locating slot 501 that forms on the housing 100.In present embodiment, the side of second locating device 850 (card ear) and the spacing relation object of locating slot 501 sides are like the spacing relation of the side and locating slot 501 sides of aforementioned first locating device 500 (card ear).Second locating device 850 (card ear) has a plurality of sides 801.In the side 801 with second prism move towards 830 orthogonal directions near the spacing of person and locating slot 501 sides greater than the spacing of other sides 801 with locating slot 501 sides.Shown in the embodiment of Fig. 7 B, second locating device 850 (card ear) is preferable to form the prominent shape of point, and removes outside the side that connects second prismatic lens 800, still has four sides 801; Wherein projecting part divides to be extended by two orthogonal sides 801 and forms.The side 801 that forms the prominent shape of point can approach parallel second prism than other sides 801 and move towards 830.Form the side 801 of the prominent shape of point and the spacing d of locating slot 501 sides this moment
2Promptly can be less than the spacing d of other sides 801 with locating slot 501 sides
1
Fig. 8 is the embodiment cut-open view that adds polaroid.In the embodiment shown in fig. 8, backlight module further includes polaroid 900 and is arranged at first prismatic lens, 300 tops, that is exiting surface one side of first prismatic lens 300.As shown in Figure 8, have a spacing X between the polaroid 900 and first prismatic lens 300, this spacing X is preferable less than 0.05mm.By this design, can reduce warpage or lumpy amplitude behind first prismatic lens, 300 expanded by heating.Fig. 9 is provided with the embodiment cut-open view of uneven surface for polaroid.In the embodiment shown in fig. 9, polaroid 900 forms uneven surface 910 towards the one side of first prismatic lens 300.By this design, can avoid the polaroid 900 and first prismatic lens 300 to adsorb mutually, and then solution is adsorbed the situation that makes first prismatic lens, 300 warpages mutually because of both.In addition, it should be noted that above-mentioned polaroid can be attached at the lower surface of display panel.
The present invention is described by above-mentioned related embodiment, yet the foregoing description is only for implementing example of the present invention.It must be noted that the embodiment that has disclosed does not limit the scope of the invention.On the contrary, being contained in the modification of the spirit of claim and scope and equalization is provided with and all is contained in the scope of the present invention.
Claims (18)
1. backlight module comprises:
Housing has a sidewall to surround an interior zone; And
First prismatic lens is arranged in this interior zone, is formed with a plurality of prism columns on this first prismatic lens, and those prism columns have one first prism trend, and this first prismatic lens includes one in addition around the edge;
Wherein, comprise a center prism column in those prism columns, this center prism column is positioned at the central authorities of those prism columns, this center prism column of this first prismatic lens and should have one first spacing between this sidewall around the intersection point at edge and this housing; Away from this center prism column and be positioned at this end points, has one second spacing between this sidewall of this end points and this housing around the edge; This first spacing is greater than this second spacing.
2. backlight module as claimed in claim 1 wherein should have one first locating device adjacent to this end points around the edge, and this first locating device is located this first prismatic lens on this housing.
3. backlight module as claimed in claim 2, wherein this first locating device comprises a location adhesive tape, and this locating adhesive tape fits in the zone of this end points of vicinity of this housing and this first prismatic lens.
4. backlight module as claimed in claim 2, wherein this first locating device comprises a card ear, is formed with a locating slot on this housing, and this card ear is contained in this locating slot.
5. backlight module as claimed in claim 4, wherein this card ear has a plurality of sides, in those sides with the orthogonal directions of this first prism trend near the spacing of person and this locating slot side spacing greater than other sides and this locating slot side.
6. backlight module as claimed in claim 1, wherein be formed with a plurality of corners on this first prismatic lens, this corner near this intersection point forms a rescinded angle, and wherein said first space D 1 replaces with this around the spacing of edge between this sidewall of the locational ora terminalis of this rescinded angle and this housing.
7. backlight module as claimed in claim 6 further comprises superimposed this first prismatic lens below that is arranged at of one second prismatic lens, wherein is formed with a corner on this second prismatic lens and is exposed between this rescinded angle and this sidewall.
8. backlight module as claimed in claim 7, wherein this corner on this second prismatic lens comprises one second locating device and locatees this second prismatic lens on this housing.
9. backlight module as claimed in claim 8, wherein this second locating device comprises a location adhesive tape, and this locating adhesive tape fits in housing and this second prismatic lens is exposed to the outer part of this rescinded angle.
10. backlight module as claimed in claim 8, wherein this second locating device comprises a card ear, is formed with a locating slot on this housing, and this card ear is contained in this locating slot.
11. backlight module as claimed in claim 7, wherein this second prismatic lens has one second prism trend and is orthogonal to this first prism trend.
12. backlight module as claimed in claim 10, wherein this card ear has a plurality of sides, this second prismatic lens has one second prism trend, in those sides with the orthogonal directions of this second prism trend near the spacing of person and this locating slot side spacing greater than other sides and this locating slot side.
13. backlight module as claimed in claim 1, wherein should comprise and join and orthogonal one first lateral margin and one second lateral margin around the edge, when angle circle of this first prism trend and this first lateral margin was between 22.5 degree and-22.5 are spent, the spacing between this first lateral margin and this sidewall was this second spacing; Spacing between this second lateral margin and this sidewall is this first spacing.
14. backlight module as claimed in claim 1, wherein should comprise and join and orthogonal one first lateral margin and one second lateral margin around the edge, when angle circle of this first prism trend and this first lateral margin was between 67.5 degree and 112.5 are spent, the spacing between this first lateral margin and this sidewall was this first spacing; Spacing between this second lateral margin and this sidewall is this second spacing.
15. backlight module as claimed in claim 1, wherein should comprise and join and orthogonal one first lateral margin and one second lateral margin around the edge, when angle circle of this first prism trend and this first lateral margin was between 22.5 degree and 67.5 degree, spacing was this second spacing between the diagonal angle lateral margin that vertical this first prism moves towards on this first prismatic lens and this sidewall; The diagonal angle lateral margin and the spacing between this sidewall of parallel this first prism trend are this first spacing.
16. backlight module as claimed in claim 1, wherein should comprise and join and orthogonal one first lateral margin and one second lateral margin around the edge, when angle circle of this first prism trend and this first lateral margin was between 112.5 degree and 157.5 degree, spacing was this second spacing between the diagonal angle lateral margin that vertical this first prism moves towards on this first prismatic lens and this sidewall; The diagonal angle lateral margin and the spacing between this sidewall of parallel this first prism trend are this first spacing.
17. backlight module as claimed in claim 1 further comprises a polaroid and is arranged at this first prismatic lens top; Wherein the spacing between this polaroid and this first prismatic lens is smaller or equal to 0.05mm.
18. backlight module as claimed in claim 1 further comprises a polaroid and is arranged at this first prismatic lens top; Wherein this polaroid forms a uneven surface towards the one side of this first prismatic lens.
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| CN2010101037382A CN101749606B (en) | 2010-01-25 | 2010-01-25 | Backlight module avoiding warping of membrane |
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|---|---|---|---|
| CN2010101037382A CN101749606B (en) | 2010-01-25 | 2010-01-25 | Backlight module avoiding warping of membrane |
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| CN101749606B true CN101749606B (en) | 2011-11-09 |
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| CN102853340A (en) * | 2012-09-06 | 2013-01-02 | 深圳市华星光电技术有限公司 | Backlight module suitable for transportation |
| JP6410223B2 (en) * | 2014-06-02 | 2018-10-24 | シーシーエス株式会社 | Connected prism sheet and line light irradiation device with prism sheet |
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|---|---|---|---|---|
| KR20040037606A (en) * | 2002-10-29 | 2004-05-07 | 엘지.필립스 엘시디 주식회사 | Liquid crystal display module and assembling method thereof |
| CN1866057A (en) * | 2005-05-20 | 2006-11-22 | 三星电子株式会社 | Optical plate, backlight assembly and display device having the optical plate |
| CN1959489A (en) * | 2006-12-04 | 2007-05-09 | 友达光电股份有限公司 | Backlight module, and supporting set for optical sheet subassembly |
| CN101008732A (en) * | 2006-01-18 | 2007-08-01 | 友达光电股份有限公司 | Panel display module |
| JP2008112663A (en) * | 2006-10-31 | 2008-05-15 | Epson Imaging Devices Corp | Backlight unit and liquid crystal display having the same |
-
2010
- 2010-01-25 CN CN2010101037382A patent/CN101749606B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20040037606A (en) * | 2002-10-29 | 2004-05-07 | 엘지.필립스 엘시디 주식회사 | Liquid crystal display module and assembling method thereof |
| CN1866057A (en) * | 2005-05-20 | 2006-11-22 | 三星电子株式会社 | Optical plate, backlight assembly and display device having the optical plate |
| CN101008732A (en) * | 2006-01-18 | 2007-08-01 | 友达光电股份有限公司 | Panel display module |
| JP2008112663A (en) * | 2006-10-31 | 2008-05-15 | Epson Imaging Devices Corp | Backlight unit and liquid crystal display having the same |
| CN1959489A (en) * | 2006-12-04 | 2007-05-09 | 友达光电股份有限公司 | Backlight module, and supporting set for optical sheet subassembly |
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| Publication number | Publication date |
|---|---|
| CN101749606A (en) | 2010-06-23 |
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