CN108445628A - Backing structure and display device for mounting on vehicle - Google Patents
Backing structure and display device for mounting on vehicle Download PDFInfo
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- CN108445628A CN108445628A CN201810169204.6A CN201810169204A CN108445628A CN 108445628 A CN108445628 A CN 108445628A CN 201810169204 A CN201810169204 A CN 201810169204A CN 108445628 A CN108445628 A CN 108445628A
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- light
- side wall
- high reflectance
- backing
- antiradar reflectivity
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
- G02B27/0101—Head-up displays characterised by optical features
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
- G02B27/0101—Head-up displays characterised by optical features
- G02B2027/0118—Head-up displays characterised by optical features comprising devices for improving the contrast of the display / brillance control visibility
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
- G02B27/0101—Head-up displays characterised by optical features
- G02B2027/0123—Head-up displays characterised by optical features comprising devices increasing the field of view
Abstract
The invention discloses a kind of backing structure and display device for mounting on vehicle, backing structure includes：Surface includes the substrate of multiple light sources, and multiple light sources region is luminous zone, and luminous zone region placed in the middle is light pooling zone；Glue frame around luminous zone setting is constituting a cavity with substrate；The intersection setting of multiple barricades forms multiple guide-lighting chambers in the cavities, and the bottom surface of each leaded light chamber has an at least one light source, guide-lighting top of chamber opening, and guide-lighting chamber includes bottom surface and the side wall that extends to open top around bottom surface and along bottom surface.Wherein, extending direction from open top to bottom surface is first direction, the side wall of guide-lighting chamber is alternately provided with high reflectance structure and antiradar reflectivity structure along first direction, so that the open-topped emergent ray is biased to light pooling zone, display effect is improved, vehicle-mounted HUD display devices luminance viewing angle specification is improved.
Description
Technical field
The present invention relates to display technology field, more particularly to a kind of backing structure and vehicle-mounted aobvious including the backing structure
Showing device.
Background technology
It comes back and shows (Head Up Display, hereinafter referred to as HUD), gradually applying in display device for mounting on vehicle at present,
The principle of vehicle-mounted HUD display systems in the prior art is will to show that content is projected by various devices by a display panel
On the windshield of automobile so that driver is in driving without bowing i.e. it can be seen that the every terms of information such as meter parameter.
Vehicle-mounted HUD is shown in standard specification for visual requirement, and the brightness opposite edges of intermediate display area is needed to show
The brightness in region is higher as possible, so that on windshield driver face part region show image be more clear.
And the backing structure of vehicle-mounted HUD display devices in the prior art is as shown in Figure 1, in order to realize that local backlight drives (Local
Dimming), luminous where the back light 3 on substrate 1 is distinguished into many blocks frequently by many barricades 2, but the gear
Wall 2 can only play the role of 3 subregion of back light, and the intensity of the emergent light of actually each subregion is almost the same, it is difficult to reach
To the requirement for visual angle in vehicle-mounted HUD displays standard.
Invention content
In view of this, a kind of backing structure of present invention offer and display device for mounting on vehicle, pass through and study light source in backing structure
The outgoing of build-in attribute combination light source optical path change, the side wall according to certain rule in the guide-lighting chamber of light extraction is arranged alternately region
High reflectance structure and antiradar reflectivity structure are set so that the emergent ray of backing structure is biased to the light of the luminous zone of backing structure
Congruence light harvesting line pooling zone.
The embodiment of the present invention provides a kind of backing structure, including：
Substrate, the substrate surface include multiple light sources, and the multiple light source region is luminous zone, the luminous zone
The region of light Relatively centralized is light pooling zone；
Glue frame, the glue frame are arranged around the luminous zone, and a cavity is just constituted on the substrate with the substrate；
Multiple barricades, the barricade intersection setting form multiple guide-lighting chambers in the cavity, each guide-lighting chamber
There is at least one light source, the leaded light chamber to have open top for bottom；The leaded light chamber includes bottom surface and surrounds described
Bottom surface and the side wall extended to the open top along the bottom surface；
It is characterized in that, be first direction from the open top to the extending direction of the bottom surface, it is at least partly described
Side wall along the first direction alternately is provided with high reflectance structure and antiradar reflectivity structure so that it is described it is open-topped go out
It penetrates light and is biased to the light pooling zone.
The embodiment of the present invention also provides a kind of display device for mounting on vehicle including above-mentioned backing structure.
Compared with prior art, backing structure and display device for mounting on vehicle provided by the invention at least have the following advantages that：
Light source all directions light intensity changing rule and the emergent ray of all directions in present invention combination backing structure
Optical path change rule is calculated by establishing model and simulates the shining to backing structure wherein after the reflection of guide-lighting chamber side wall
Reflection position of the convergent light path in light pooling zone in area on side wall, while wherein passing through guide-lighting chamber by calculating and simulating
Reflection position of the light path dissipated to the outside of the luminous zone of backing structure after side wall reflection on side wall is preferentially stronger in light intensity
And the side wall reflection position setting high reflectance structure that the light path of final convergent light is passed through, while it is preferentially relatively strong in light intensity and
Antiradar reflectivity structure is arranged in the side wall reflection position that the light path of the light finally dissipated is passed through, and in summary condition is alternately above-mentioned
The side wall of guide-lighting chamber is arranged alternately high reflectance structure and antiradar reflectivity structure on the extending direction from open top to bottom surface.
Under such structure, although the intensity of backing structure entirety emergent light is weakened, shine to backing structure
The convergent light overwhelming majority in light pooling zone in area can pass through high reflectance structure, and loss is smaller, and to backlight luminous zone outgoing
The overwhelming majority of scattered light can pass through antiradar reflectivity structure, and loss is more, eventually leads to light of the emergent light in luminous zone of backlight
The brightness of line pooling zone is relatively high, and the brightness of the fringe region of luminous zone is relatively low, and the display for improving display device is clear
Clear degree and safety coefficient improve vehicle-mounted HUD display devices luminance viewing angle specification.
Description of the drawings
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for
For those of ordinary skill in the art, without creative efforts, other are can also be obtained according to these attached drawings
Attached drawing.
Fig. 1 is a kind of backing structure schematic diagram of the prior art；
Fig. 2 is a kind of backing structure schematic diagram provided in an embodiment of the present invention；
Fig. 3 is a kind of vertical view of backing structure provided in an embodiment of the present invention；
Fig. 4 is the B1B2 sectional views of backing structure in Fig. 3；
Fig. 5 is the optics illumination Yu visual angle relational graph of light source in a kind of backing structure provided in an embodiment of the present invention；
Fig. 6 is the enlarged drawing of the guide-lighting chamber in the regions M in Fig. 4；
Fig. 7 is a kind of optical path analysis figure of the guide-lighting chamber of Fig. 6；
Fig. 8 is another structure chart of luminous zone in Fig. 3；
Fig. 9 is another optical path analysis figure of the guide-lighting chamber of Fig. 6；
Figure 10 is the modeled analysis figure of the guide-lighting chamber of Fig. 6；
Figure 11 is another modeled analysis figure of the guide-lighting chamber of Fig. 6；
Figure 12 is a kind of light path comparison chart of the guide-lighting chamber of Fig. 6；
Figure 13 is the guide-lighting chamber schematic diagram of another backing structure provided in an embodiment of the present invention；
Figure 14 is also a kind of vertical view of backing structure provided in an embodiment of the present invention；
Figure 15 is the side view of backing structure provided in an embodiment of the present invention；
Figure 16 is the schematic diagram of display device for mounting on vehicle provided in an embodiment of the present invention.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other without creative efforts
Embodiment shall fall within the protection scope of the present invention.
The embodiment of the present invention provides a kind of backing structure, including：Substrate, the substrate surface includes multiple light sources, described
Multiple light sources region is luminous zone, and the region of the luminous zone light Relatively centralized is light pooling zone；Glue frame, the glue
Frame is arranged around the luminous zone, and a cavity is just constituted on the substrate with the substrate；Multiple barricades, the barricade phase
Setting is handed over to form multiple guide-lighting chambers in the cavity, the bottom of each guide-lighting chamber has at least one light source, institute
Stating guide-lighting chamber has open top；The leaded light chamber includes bottom surface and is opened around the bottom surface and along the bottom surface to the top
The side wall that mouth extends；It is first direction, at least partly described side wall edge from the open top to the extending direction of the bottom surface
Alternately it is provided with high reflectance structure and antiradar reflectivity structure on the first direction so that the open-topped emergent ray
It is biased to the light pooling zone.
The embodiment is illustrated with reference to Fig. 2, Fig. 3 and Fig. 4, Fig. 2 is a kind of backlight provided in an embodiment of the present invention
Structural schematic diagram, Fig. 3 are a kind of vertical views of backing structure provided in an embodiment of the present invention, and Fig. 4 is backing structure in Fig. 3
B1B2 sectional views.
Referring to Fig. 2, Fig. 3 and Fig. 4, backing structure provided in this embodiment includes substrate 101, includes multiple on substrate 101
Light source 103, it is possible to understand that be because backing structure in light source 103 also need to printed circuit board Print Circuit Bord,
Abbreviation PCB) etc. structures connection could be powered, so further including the structures such as printed circuit on substrate 101, wherein set on substrate 101
The region of light source 103 is equipped with as luminous zone 106, the region of light Relatively centralized is light pooling zone 107, light in luminous zone 106
The shapes and sizes of line pooling zone 107 determine that depending on specific design needs, due to the purpose of design of the backing structure be in order to
Light intensity of the light pooling zone 107 relative to 106 other fringe regions of luminous zone will be increased, so the reality of light pooling zone 107
Region of the design depending on specifically needing increase relative light intensity, the zonal ray Relatively centralized, usually, light pooling zone 107
The middle position (at least position of a symmetry axis region) for the luminous zone 106 that should be located at；The backing structure further includes glue
Frame 102, glue frame 102 are arranged in the top of substrate 101 around luminous zone 106, and shape made of glue frame 102 surrounds depends on shining
The shape of 106 demand of area, however it is not limited to which rectangle as shown in the figure, glue frame 102 form a cavity, cavity top with substrate 101
Opening, bottom surface are the luminous zone 106 on substrate 101, and side is glue frame 102；The gear of multiple intersections is also provided in cavity
Cavity is divided into multiple guide-lighting chambers 200 by wall 104, these barricades 104.The bottom of guide-lighting chamber 200 has at least one light source
103, it can also be multiple with one to need the light source according to design, and the quantity of light source 103 can be in each leaded light chamber 200
Identical can also be difference, not limit herein；Guide-lighting chamber 200 has open top 203 as can see from Figure 4, and in addition to base
Further include the side wall 201 extended to open top 203 around bottom surface outside the bottom surface that plate 101 is constituted, wherein side wall 201 is opened from top
Extending direction of the mouth 203 to bottom surface 302 is first direction, is alternately arranged in a first direction on the side wall 201 of guide-lighting chamber 200
High reflectance structure 105a and antiradar reflectivity structure 105b, the alternation method include on first direction for example " it is low-high-low-
The setting of the rule of height ... " or " high-low-high-is low ... ", does not do order qualifier, the height being arranged by this rule herein
Reflectivity texture 105a and antiradar reflectivity structure 105b makes light source 103 be biased to light from the emergent ray of open top 203 and converge
Collect 107 corresponding space of area.
Concrete principle combination Fig. 5 and Fig. 6 explanation, Fig. 5 is light source in a kind of backing structure provided in an embodiment of the present invention
Optics illumination and visual angle relational graph, Fig. 6 is the enlarged drawing of the guide-lighting chamber in the regions M in Fig. 4.
As shown in fig. 6, for example, as light pooling zone 107 is located at the right side of guide-lighting chamber, then need high anti-by being arranged
It penetrates rate structure 105a and antiradar reflectivity structure 105b and makes the right side from the emergent ray deviation figure of open top 203 of light source 103.
There is the reflection that some light (such as emergent ray 301c) needs not move through side wall 201 to pass through top in the emergent ray of light source 103
Portion's opening 203 projects, and the embodiment of the present invention is not handled some light；For needing just to penetrate by the reflection of side wall 201
Go out the light (such as emergent ray 301a) of open top 203, it is to be appreciated that only emergent ray 301a projects top
(opposite the right side wall 201b collects the left side side wall 201a that last time reflection before opening 203 is happened in figure far from light
Area 107) it so that emergent ray 301a is biased to light pooling zone 107.
Referring back to Fig. 5, it is to be appreciated that the optics illumination that the angle in visual angle deviation perpendicular light source direction is smaller is bigger,
That is for light source 103, emergent ray 301a and the angle a of bottom surface 302 are bigger, and the light intensity that human eye receives corresponding light beam is got over
Greatly, i.e., the processing mode to the larger light of angle a should be paid the utmost attention to, therefore combines Fig. 7, Fig. 7 is a kind of light of the guide-lighting chamber of Fig. 6
Road analysis chart.The present embodiment analyzes the variation of the emergent ray 301a of light source 103 with angle a from 90 ° of gradually smaller processes
Rule.As angle a becomes smaller from 90 °, emergent ray 301a first reflections appear in left side side wall 201a close to open top
203 vertex T1 (such as light 301a (1)), emergent ray 301a are biased to light pooling zone 107；Later as angle a is gradual
Become smaller, reflection point positions of the emergent ray 301a in left side side wall 201a first times can continuously decrease, and the position of outgoing can be gradual
Close to the right side wall 201b (such as light 301a (2)), it is emitted as vertex T2 of the Exit positions close to the right side wall 201b
Light 301a can carry out primary event again and project guide-lighting chamber again, at this time emergent ray 301a can deviate from light pooling zone 107 (such as
Light 301a (3))；And then angle a continues to become smaller, and the emergent ray 301a away from light pooling zone 107 can be moved closer to again
Left side side wall 201b (such as light 301a (4)), the emergent ray as vertex T1 of the Exit positions close to left side side wall 201a
301a can carry out primary event and project guide-lighting chamber (such as light 301a (5)) again again, and emergent ray 301a is biased to light once again at this time
Line pooling zone 107；It can be understood that the light path feature in angle a from 90 ° of gradually smaller process emergent ray 301a can be such as
This reciprocation cycle.And light 301a angles a from 90 ° of gradually smaller processes be exactly of light 301a on the side wall 201a of the left side
Primary event point gradually moves down into the process of bottom 302 from vertex T1 along a first direction, and first reflection point is located at left side side
On wall 201a K1 sections of light 301a as the above analysis its be biased into light pooling zone 107, it is therefore desirable to setting is high anti-
Rate structure 105a is penetrated to maintain, and first reflection point is located at K2 sections on the side wall 201a of the left side of light 301a as the above analysis
It is away from light pooling zone 107, it is therefore desirable to antiradar reflectivity structure 105b is set and is weakened, later such cycle, institute so as to
It forms and has been alternately arranged high reflectance structure 105a and antiradar reflectivity structure on the side wall of guide-lighting chamber in a first direction
The set-up mode of 105b.The setting rule that the right side wall 201b can similarly be released is also to be arranged alternately high reflectance structure 105a
With antiradar reflectivity structure 105b.
In addition, the high reflectance structure 105a in the present embodiment is compared with antiradar reflectivity structure 105b, high reflectance structure
Reflectivity of the reflectivity of 105a more than antiradar reflectivity mechanism 105b, but and non-limiting high reflectance structure 105a or low anti-
The reflectivity for penetrating the whole last points of rate structure 105b is equal and forms one piece one piece interrupted of structure (coloring is only to show in figure
Meaning)；Reflectivity everywhere in actually from high reflectance structure 105a and antiradar reflectivity structure 105b can also be different or
It is consecutive variations, the reflectivity that need to only meet high reflectance structure 105a entirety is more than antiradar reflectivity structure 105b.
On the one hand the backing structure provided using above-described embodiment is preserved to the maximum extent by the way that high reflectance structure is arranged
Finally to the intensity of the convergent light in light pooling zone of backlight luminous zone, on the other hand by the way that antiradar reflectivity structure is arranged most
Weaken to limits the intensity of the light of the final light pooling zone away from backlight luminescence area so that the luminous zone of backlight is presented
Light intensity larger illumination mode in light pooling zone light intensity opposed edge sections improves display precision and using the backing structure
The safety coefficient of vehicle-mounted HUD display systems.
Further, in conjunction with Fig. 3 and Fig. 6, in backing structure provided in an embodiment of the present invention, the side wall of guide-lighting chamber 200
201 separate first part side wall 201a and second part side wall 201b according to the position relationship of itself and light pooling zone：
Wherein first part's side wall 201a and second part side wall 201b can be that two opposite faces (also have partial sidewall
Both it had been not belonging to first part side wall 201a or had been not belonging to second part side wall 201b), such as first part's side wall opposite in Fig. 3
201a and second part side wall 201b；
Additionally due to the shape of the orthographic projection on the substrate 101 of guide-lighting chamber 200 is uncertain, therefore can also be by first part
Side wall 201a and second part side wall 201b composition wholes side wall 200.Such as in Fig. 8, Fig. 8 is the another kind of luminous zone in Fig. 3
Structure chart, using axis D1 as boundary, side wall is divided into first part side wall 201a and second part side wall 201b.
Above-mentioned first part's side wall 201a is compared with second part side wall 201b, and second part side wall 201b is close to the light
Line pooling zone 107, first part side wall 201a deviate from the light pooling zone 107, actually should according in design it is required that
Ray convergence to the concrete structure of light pooling zone light pooling zone 107 and the structure of guide-lighting chamber 200 determine.
It is another optical path analysis figure of the guide-lighting chamber of Fig. 6 referring back to Fig. 9, Fig. 9, light source is known that by analysis before
It is biased to the light 301a on the left side at 103 when angle a is larger, first part side wall 201a can be passed through close to open top
203 one section of K1 is just directly biased to light pooling zone 107 (such as light 3011a) after carrying out primary event, and combines Fig. 5 can
To know that emergent ray 3011a is big so light intensity is relatively strong due to corresponding angle a, it is to be appreciated that first reflection point exists
K1 sections of emergent ray 3011a on first part's side wall 201a side walls is that light source 103 is reflected in first part side wall 201a
Emergent ray in the relatively high part of light intensity, therefore in first part side wall 201a along first since top open part 203
Direction, firstly the need of setting high reflectance structure 105a, is arranged alternately antiradar reflectivity structure as previously described again later toward next section of K1
105b and high reflectance structure 105a；And for the light 3011b on the right of being biased at light source 103 when angle b is larger, meeting
It is just directly away from light pooling zone after second part side wall 201b carries out primary event close to one section of K3 of open top 203
107 (such as light 3011b), and emergent ray 3011b due to corresponding angle b it is big so light intensity is relatively strong, therefore second
Antiradar reflectivity structure 105b should be arranged toward next section of K3 along first direction since top open part 203 in partial sidewall 201b,
It is arranged alternately high reflectance structure 105a and antiradar reflectivity structure 105b as previously described again later.
The backing structure provided using above-described embodiment, can be preferentially by the emergent ray of the larger angular range of illuminance
The emergent ray that middle light path can finally be biased to light pooling zone is reflected by high reflectance structure, keeps its loss smaller, and
Wherein light path can finally be reflected away from the emergent ray of light pooling zone through too low reflecting material structure, keep its loss very big,
It can even fully absorb.Such emergent ray entirety is to the convergent characteristic in light pooling zone with regard to more excellent.
With reference to the model of another backing structure provided in an embodiment of the present invention further to high on guide-lighting chamber side wall
Reflectivity texture and the matching optimization set-up mode of antiradar reflectivity structure are analyzed.Figure 10 is the modelling of the guide-lighting chamber of Fig. 6
Analysis chart, the specific practical composed structure of guide-lighting chamber is identical with Fig. 6 in Figure 10, and Figure 10 is substantially that be directed to side wall 201 in Fig. 6 vertical
The directly quantitative analysis figure in the case of bottom surface 302, in order to which that is analyzed in quantity facilitates part-structure to repeat no more.In conjunction with Fig. 6
And Figure 10, light source 103 can be equivalent to the point light source O at the geometric center of bottom surface, about symmetry axis S1 by the light of point light source O
Line is divided into the first part light 401a for being biased to left side and is biased to the second part light 401b on right side, and two parts light is deviateing
Light intensity is equal when symmetry axis S1 angles are identical.If 302 length of bottom surface is L, 200 height of guide-lighting chamber is H.
For first part light 401a, the actual size range of the angle a of light 401a and bottom surface 302 can be 0 °≤
A≤90 °, and it is as described above, it will without first part side wall 201a reflections for some light 4011a larger a
Guide-lighting chamber 200 is projected, the magnitude range that this some light corresponds to angle a is(within the scope of this most
Small angle a be first part light 4012a just for the first time contact open top 203 at first part's side wall 201).Therefore
It only needs to considerOptical path change situation when variation, if first part light 401a is at first
It is h to divide the first reflection point P1 height of side wall 201a1, then need to only consider 0≤h1The variation issue of light path in≤H variations.
Referring back to Figure 10, first part light 401a first part side wall 201a first reflection point P1 to and then
Next time the difference in height of the pip P2 of second part side wall 201b be h2, h is known that by the principle of reflection of light2=2*
h1, and the part that side wall reflection deviation light pooling zone 107 is eventually passed through in first part light 401a must satisfy last
Secondary reflection is happened on first part side wall 201a, and since incident light and reflected light are symmetrically known that first about normal
The h that the difference in height being divided between two pips adjacent on side wall 201a is 2 times2, so first part light 401a is first
The first reflection point P1 to open-topped difference in height S of partial sidewall 201a needs to meet difference in height S divided by h2Integer portion
It is divided into even number：
2(n-1)*h2≤ S ＜ (2n-1) h2(i.e. S divided by h2 roundings are even number)；
Wherein n is positive integer more than or equal to 1, and known S=H-h1, release
Above-mentioned h1For the height of the light 401a point P1 reflected for the first time on first part side wall 201a, and it is emitted
Light 401a is also possible to multiple reflections can occur on the side wall of the left side, since reflection light is symmetrical about normal with incident ray
, so the difference in height on P1 points between each pip should be 2 times of h2I.e. 4 times of h1, it can thus be appreciated that light at this time
The height h of correspondence all pips of the 401a on first part side wall 201aIt is leftFor with h1For first term, 4 times of h1For tolerance etc.
Each numerical value of difference series, but Sidewall Height H cannot be exceeded, therefore：hIt is left=4 (N-1) h1+h1, wherein N should be since 1 by
Gradually increased positive integer is to obtain the height of each pips of the first part light 401a on first part side wall 201a, i.e.,
For eligible h1First part light 401a need the first side wall 201a h1、5*h1、9*h1... until being no more than
The position of H is respectively provided with high reflectance structure.
And these light are corresponding also corresponding pip on second part side wall 201b, can similarly know, light
The height h of correspondence all pips of the 401a on second part side wall 201bIt is rightFor with P2 point heights 3*h1For first term, 4 times of h1
For each numerical value of the arithmetic progression of tolerance, but Sidewall Height H cannot be exceeded, therefore its height is hIt is right=(4N-1) h1Pair, i.e.,
In eligible h1First part light 401a, it is also necessary in the 3*h of second sidewall 201b1、7*h1、11*h1... until not
Position more than H is also respectively provided with high reflectance structure.
As shown in figure 11, Figure 11 is another modeled analysis figure of the guide-lighting chamber of Fig. 6, in first part light 401a most
Last time reflection is then must satisfy away from the part of light pooling zone 107 be happened at second part side wall by side wall reflection eventually
On 201b, and since incident light and reflected light about normal are symmetrically known that adjacent second part side wall 201b on two instead
The h that difference in height between exit point is 2 times2, so P2 points should be the h of even-multiple to open-topped difference in height2, and P2 points arrive
Difference in height between P1 points is h2, so first part light 401a is arrived in the first reflection point P1 of first part side wall 201a
Open-topped difference in height S needs the h for meeting even-multiple2Along with 1 h2, i.e. S satisfactions：
(2n-1)*h2≤ S ＜ 2n*h2(i.e. S divided by h2 roundings are odd number)；
Wherein n is positive integer more than or equal to 1, and known S=H-h1, release
Similarly it is recognised that the height of all pips of correspondence on first part side wall 201a is h at this timeIt is left=4 (N-
1)h1+h1, wherein N should be since 1 gradual increased positive integer to obtain first part light 401a in first part's side wall
The height of each pip on 201a, i.e., for eligible h1First part light 401a need in the first side wall 201a
H1、5*h1、9*h1... until the position no more than H is respectively provided with antiradar reflectivity structure；And it is corresponding in second part side wall
Also there is corresponding pip on 201b, similarly its height is hIt is right=(4N-1) h1, i.e., for meeting above-mentioned condition h1First part's light
Line 401a, it is also necessary in the 3*h of second sidewall 201b1、7*h1、11*h1... it is set low instead until the position no more than H is also all provided with
Penetrate rate structure.
Again since Fig. 5 is known that the first part light 401a of light source 103 meets corresponding first part's light 401a
It is bigger in the light illuminance of the first reflection point P1 height h1 bigger (then angle a is bigger) of first part side wall 201a, it is right
Should high reflectance structure or antiradar reflectivity structure be set with higher priority, such as the leaded light that Figure 12, Figure 12 are Fig. 6
A kind of light path comparison chart of chamber, light 4011a compared with light 4012a, light 4011a on first part side wall 201a
The height of primary event point P11 is h11, the height of first reflection point P12s of the light 4012a on first part side wall 201a
For h12, and h11>h12(i.e. light 4011a and the angle a of bottom surface are greater than light 4012a), i.e. the illumination of light 4011a is more than
Light 4012a, and they are reflected at P11 points, being finally biased to light pooling zone 107 for light 4011a should be
High reflectance structure is arranged in P11 points, and finally deviating from light pooling zone 107 for light 4012a should be low anti-in the setting of P11 points
Rate structure is penetrated, the demand setting that should just carry out preferential light 4011a when such contradiction occurs according to intensity of illumination priority is high anti-
Penetrate rate structure.According to These characteristics and combine the formula derived before that can obtain the following table 1, table 1 is that first part's light corresponds to
(" (A, B) " is indicated from one section from floor height A to height B on side wall side wall construction table in table, and " convergence " indicates that light can be inclined
To light pooling zone 107, " diverging " indicates that light deviates from light pooling zone, and "high" indicates setting high reflectance structure, " low " table
Show setting antiradar reflectivity structure)：
For second part light 401b, be equivalent to compared with first part light 401a be equivalent to first part's side wall and
The condition of second part side wall to be met is opposed, similarly can obtain following table 2 by above-mentioned analysis, and table 2 is second part
Light corresponds to side wall construction table：
It is analyzed presently in connection with Tables 1 and 2, is corresponding h from top to bottom either in table 1 or table 21A height pass
The row that a height is successively decreased also is presented in the initial position of the arrangement subtracted, corresponding setting high reflectance structure and antiradar reflectivity structure
Cloth, according to reasoning before if occurring conflicting preferentially according to sequence upper demand be arranged corresponding high reflectance structure and
Antiradar reflectivity structure.
For first part side wall 201a, since the value of n can be different, such asWithWhen having overlapping, when as table 2 conflicts with table 1, at this timeCorresponding n
Certainly it is less thanCorresponding n's, and the smaller line numbers in Tables 1 and 2 of n are got over
Forward, priority is higher, therefore for first part side wall 201a, only it need to consider the conclusion of table 1, such as table 2, work as n=2
When,It is corresponding to beSection needs that antiradar reflectivity structure is arranged, stillDuan Yubiao
In 1 when n=1It is correspondingSection have it is overlapping andSection needs that high reflectance material is arranged
Material, and due toThe corresponding n values of section are small, priority height, therefore while clashing should pay the utmost attention to the conclusion in table 1；
Secondly, similarly in table 1 for exampleWithWhen having overlapping, at this time
Corresponding n is less than certainlyCorresponding n's, and the smaller line numbers in table 1 of n are more forward, priority is higher,
Interval structure where need to only considering first reflection point height h1 when clashing, such as table 1, when n=2It is corresponding to beSection needs that antiradar reflectivity structure is arranged, stillWork as n in Duan Yubiao 1
When=1It is correspondingSection have it is overlapping andSection need be arranged highly reflective material, and by
InThe corresponding n values of section are small, and priority is high, therefore occur that when such conflict first reflection in table 1 should be paid the utmost attention to
Point height h1Corresponding conclusion；In conclusion can obtain for first part side wall 201a, it should be in heightExtremely
High reflectance structure, height is arranged in the position of sectionExtremelyAntiradar reflectivity structure is arranged in the position of section, and wherein H is described
The height of side wall, n are the positive integer more than or equal to 1.
Similarly for second part side wall 201b, the conclusion of table 2, i.e. height need to be only consideredExtremelyThe position of section
Antiradar reflectivity structure, height are setExtremelyHigh reflectance structure is arranged in the position of section, and wherein H is the height of the side wall
Degree, n are the positive integer more than or equal to 1.
The conclusion of above-mentioned side wall construction is obtained based on side wall 201 perpendicular to the case where bottom surface 302, is removed in actual design
Also generally approximately perpendicular to bottom surface, obtained design structure substantially also complies with the side wall other parts side wall of luminous area edge
Situation is stated, the width along first direction is d if each section of high reflectance structure 105a is in first part side wall 201a1, antiradar reflectivity
Structure 105b is d in width of the first part side wall 201a on first direction2；Each section of antiradar reflectivity structure 105b is at second
It is d to divide width of the side wall 201b on first direction3, high reflectance structure 105a is in second part side wall 201b along first direction
On high reflectance structure width be d4, then：
Wherein n be positive integer, H be side wall height, in conjunction with side wall construction before conclusion derive it is understood that
N gradual increased process, that is, high reflectance structure 105a or antiradar reflectivity structure 105b since 1 are opened along side wall 201 from top
Each section that the distribution of bottom surface 302 is gradually arrived at mouth 203, and n is bigger, d1、d2、d3、d4It is smaller, i.e. the height of first part's side wall 201a
The width of reflectivity texture 105a in a first direction is gradually reduced, and the antiradar reflectivity structure 105b of first part side wall 201a exists
Width on first direction tapers into；The width of the high reflectance structure 105a of second part side wall 201b in a first direction
It is gradually reduced, the width of the antiradar reflectivity structure 105b of second part side wall 201b in a first direction tapers into.
Equally, the high reflectance structure 105a in the present embodiment is compared with antiradar reflectivity structure 105b, high reflectance structure
The reflectivity of 105a is more than the reflectivity of antiradar reflectivity mechanism 105b, but also and non-limiting high reflectance structure 105a or low
The reflectivity of the whole last points of reflectivity texture 105b is equal and forms one piece one piece interrupted of structure and (coloured in figure and be only
Signal)；Reflectivity everywhere in actually from high reflectance structure 105a and antiradar reflectivity structure 105b can also be different or
Person is consecutive variations, and the reflectivity that need to only meet high reflectance structure 105a entirety is more than antiradar reflectivity structure 105b.
When high reflectance structure and antiradar reflectivity structure is arranged, since the light path of different emergent rays is in side wall
The point for inevitably having coincidence, there may be also have to deviate from by the light for being biased to light pooling zone existing simultaneously of the same point on side wall
The light of light pooling zone.And the backing structure for using aforesaid way to provide, by similar modeling analysis, in conjunction with source light
Characteristic distinguish priority when above-mentioned conflict occurs according to light intensity magnitude, solve such contradiction, thus promote light and converge
Ji Qu is more preferable relative to the effect of fringe region light intensity.
Further, it is that the guide-lighting chamber of another backing structure provided in an embodiment of the present invention shows referring to Figure 13, Figure 13
It is intended to, the height of side wall 201 is still H, for first part side wall 201a, in heightTo H sections of positions, high reflection is set
Rate structure 1051a, in heightExtremelyAntiradar reflectivity structure 1052b, first part's Sidewall Height is arranged in the position of sectionExtremelyThe position setting high reflectance structure 1053a of section；For second part side wall 201b, in heightIt is low to H sections of position settings
Reflectivity texture 1054b, in heightExtremelyHigh reflectance structure 1055a, first part's Sidewall Height is arranged in the position of sectionExtremelyThe position setting high reflectance structure 1056b of section.
The basis of said structure design is the conclusion for the side wall construction released before, i.e., n is arranged on the first side wall 201a
Value corresponding high reflectance structure 1051a and 1053a when being 1 and 2, setting n values corresponding antiradar reflectivity structure when being 1
1052b；Corresponding antiradar reflectivity structure 1054b and 1056b when n values are arranged on second sidewall 201b and are 1 and 2, setting n take
Value corresponding high reflectance structure when being 1.By taking a kind of backing structure of vehicle-mounted HUD display systems as an example, Sidewall Height H and bottom
The ratio of the length L in face 302 is generally in 3 or so, i.e. H=3L, then the equivalent point light source 103 of bottom surface 302 is sent out in Fig. 9 first
Secondary reflection is happened at height on side wall 200Point light and ground angleAnd light source
103 light sent out are gradually smaller as angle a becomes smaller, even if only adjusting angle a according to Fig. 5 at 40 ° to 90 °
Between light also correspond to have adjusted nearly 70% or more of 103 total illumination of light source, on the other hand, light smaller angle a
It must travel in multiple reflections on side wall and be set 1054b sections of antiradar reflectivity structure with high priority, even if so again
Continue to influence caused by antiradar reflectivity structure or high reflectance structure is arranged also less.
So using backing structure provided in this embodiment, just adjusted with less high reflectance structure and antiradar reflectivity structure
The light that whole most of light source is sent out is to reach the light pooling zone for increasing backing structure luminous zone relative to fringe region
Light intensity also saves cost while simplifying technique.
The embodiment of the present invention also provides a kind of backing structure, and referring to Figure 14, Figure 14 is provided in an embodiment of the present invention also one
The vertical view of kind backing structure.Aforementioned barricade 104 divides for the first barricade 104a and the second barricade 104b, wherein the first barricade 104a
Extend in a second direction and in third direction repeated arrangement, the second barricade 104b extends along third direction and repeated in second direction
Arrangement.Wherein light pooling zone 107 is the axis for passing through its geometric center A points on luminous zone 106 and extending along second direction
107, the first part side wall 201a of guide-lighting chamber 200 are to be located on the first barricade 104a adjacent with guide-lighting chamber 200 and separate axis
107 side wall, second part side wall 201b is adjacent with guide-lighting chamber 200 on the first barricade 104a and leans on axial ray 107
Side wall.Above-mentioned second direction intersects with third direction.
Since under normal circumstances, the imaging of vehicle-mounted HUD display systems on the windshield is the projection of display module imaging,
And the image on windshield is generally required to converge at centre as possible in the upper and lower directions at driver visual angle, and at visual angle
Left and right directions on can not do too many requirement, can be achieved with the clear of head-up in this way and show.Requirement for backing structure
Also the center converged in one direction in this direction is only required, therefore for also only needing needing light in above-described embodiment
High reflectance structure and antiradar reflectivity structure are set on the convergent third direction of line in opposite two side walls.This is also needle
To a kind of optimization backing structure in general common vehicle-mounted product.
In addition, the reflectivity of high reflectance structure 105b is higher in backing structure provided in an embodiment of the present invention, then as before
Described, polarization-maintaining is got over to the loss of the light of light pooling zone 107 from the emergent ray of the open top 203 of backing structure
Small, then the intensity for being biased to the light of light pooling zone 107 is bigger (but being also less than light intensity when above structure not being arranged),
The exiting light beam intensity of open top 200 is also bigger.Therefore used high reflectance structure can be adjusted according to actual product demand
Used material reflectivity size to control open-topped exiting light beam intensity, this also provides a kind of control backlights to go out
Penetrate the mode of light intensity.Moreover, with the raising of high reflectance structure 105b reflectivity, it is biased to the light phase of light pooling zone 107
It is also bigger for the intensity of the light away from light pooling zone, raising display effect can be further increased, improves vehicle-mounted HUD and shows
Device luminance viewing angle specification.
Further, light source 103 is made of light emitting diode (LED) in backing structure provided in an embodiment of the present invention
's.LED light source operating voltage is very low (some only 1V or so), and work also electric current very little (10 had-1The mA orders of magnitude can shine),
Shock resistance and anti-seismic performance are good, and reliability is high, long lifespan, and the electric current power passed through by modulation can easily modulate luminous
It is strong and weak.Using LED as light source 103, the stability and reliability of backing structure can be improved.
In the backing structure that above-described embodiment provides, high reflectance structure 105a can be made by the anti-material of silver, metal
Silver have larger extinction coefficient, then when light beam by air incidence to metal surface when, decline rapidly into intrametallic light amplitude
Subtract so that the luminous energy into metal inside is accordingly reduced, and reflects luminous energy increase；Therefore extinction coefficient is bigger, light amplitude decaying
Rapider, the luminous energy into metal inside is fewer, and reflectivity is higher.Further for visible region, preferable metal material is exactly
Metallic silver or aluminium.And antiradar reflectivity structure then preferably fully absorbs the light beam by antiradar reflectivity structure, thus preferably
It is made of the black material for the light beam that can absorb each wavelength.
Further, the brightness of the light source 103 in backing structure leaded light chamber 200 provided in an embodiment of the present invention can be single
Solely control, such as in Fig. 3, guide-lighting chamber 200 divides all light sources 103 for multiple subregions, can pass through the circuit knot on substrate 101
The control of driving chip enables the brightness of the light source 103 in each subregion to control in structure and display module, and such one
Aspect can realize that local backlight drives (Local Dimming), and display effect more preferably, it is more abundant to be applicable in scene and occasion.
High reflectance structure and antiradar reflectivity mechanism in backing structure provided in an embodiment of the present invention commonly form work
Skill can be the high reflectance film layer structure formed on side wall 201 using spraying process and antiradar reflectivity film layer structure, in this way
Structure is not easy to fall off, stability is preferably and also relatively easy in process；In addition can also be first in advance according to model
It simulates relevant parameter and produces high-precision smooth patch, the high-precision patch is attached on side wall 201 later, in this way
Structure under the precision control higher of high reflectance structure and antiradar reflectivity structure, be easier control high reflectance structure and low anti-
Penetrate the detail design of rate structure.
In addition to this, it is the side view of backing structure provided in an embodiment of the present invention referring to Figure 15, Figure 15, the present invention is implemented
The backing structure that example provides further includes heat dissipating layer 501 and backlight pedestal 502, and wherein heat dissipating layer 501 can be below substrate 101
Radiate aluminum component, which can also be the palisade of diagram to further increase radiating efficiency；Backlight pedestal 502 is located at heat dissipation
501 lower section of layer is used to support backing structure, wherein also has fan 503 below pedestal, and lower section corresponding with fan 503, which also has, to be dissipated
Hot air outlet.
Due to often under sunlight, being needed for vehicle-mounted HUD display systems higher in running car environment
Backlight illumination, thus great heat is will produce, it can greatly be promoted using the structure of above-mentioned heat dissipating layer and fan combination scattered
Thermal energy power improves the stability of backing structure.
It includes above-mentioned backing structure display device for mounting on vehicle that the embodiment of the present invention, which also provides a kind of, which can be with
For in vehicle-mounted HUD display systems, referring to Figure 16, Figure 16 is the schematic diagram of display device for mounting on vehicle provided in an embodiment of the present invention,
The display device for mounting on vehicle 600 includes backing structure 601 provided in an embodiment of the present invention, in addition to this can also include liquid crystal display
Panel 602, reflective projection device 603 and windshield 604, wherein reflective projection device 603 may include a plane reflection
A mirror 603a and concave mirror 603b.Backing structure 601 shines passes through reflective projection after the imaging of display panel 602
The image of display panel 602 is transferred on windshield 604 by the reflection of device 603, wherein can be the reflection by such as figure
Two secondary reflections of the two-face mirror of projection arrangement 603 are not in thus since the image pattern of odd number secondary reflection is reverse
The case where, further last time reflection using concave mirror 603b also can as light more converge raising display light
The relative luminance of line pooling zone.
Above-mentioned display device for mounting on vehicle is improved to be projected in and be kept out the wind as a result of backing structure provided in an embodiment of the present invention
The brightness relative to peripheral regions of glass light line pooling zone so that the phase in the region (light pooling zone) of driver's eyes head-up
It is higher to brightness, it is easier to see display content clearly, also improve vehicle-mounted HUD display devices luminance viewing angle specification.
It is provided for the embodiments of the invention backing structure above and display device for mounting on vehicle is described in detail, herein
Applying specific case, principle and implementation of the present invention are described, and the explanation of above example is only intended to help
Understand the method and its core concept of the present invention；Meanwhile for those of ordinary skill in the art, according to the thought of the present invention,
There will be changes in the specific implementation manner and application range, in conclusion the content of the present specification should not be construed as to this
The limitation of invention.
Claims (15)
1. a kind of backing structure, including：
Substrate, the substrate surface include multiple light sources, and the multiple light source region is luminous zone, the luminous zone light
The region of Relatively centralized is light pooling zone；
Glue frame, the glue frame are arranged around the luminous zone, and a cavity is just constituted on the substrate with the substrate；
Multiple barricades, the barricade intersection setting form multiple guide-lighting chambers, the bottom of each guide-lighting chamber in the cavity
With at least one light source, the leaded light chamber has open top；It is described leaded light chamber include bottom surface and surround the bottom surface
And the side wall extended to the open top along the bottom surface；
It is characterized in that, being first direction, at least partly described side wall from the open top to the extending direction of the bottom surface
Alternately it is provided with high reflectance structure and antiradar reflectivity structure along the first direction so that the open-topped emergent light
Line is biased to the light pooling zone.
2. backing structure as described in claim 1, which is characterized in that the side wall is divided into first part's side wall and second part
Side wall, the second part side wall deviate from the light pooling zone, institute close to the light pooling zone, first part's side wall
It includes one section of high reflectance structure that first part's side wall, which is stated, since the top open part, later in the first direction
On be arranged alternately the antiradar reflectivity structure and the high reflectance structure successively；Second side wall is from the open top
Place starts to include one section of antiradar reflectivity structure, is arranged alternately the high reflectance knot successively in said first direction later
Structure and the antiradar reflectivity structure；The reflectivity of the high reflectance structure is higher than the antiradar reflectivity structure.
3. backing structure as claimed in claim 2, it is characterised in that
The width of the high reflectance structure of first part's side wall in said first direction is gradually reduced, and described first
The width of the antiradar reflectivity structure of partial sidewall in said first direction tapers into；
The width of the high reflectance structure of the second part side wall in said first direction is gradually reduced, and described second
The width of the antiradar reflectivity structure of partial sidewall in said first direction tapers into.
4. backing structure as claimed in claim 2, which is characterized in that the side wall is arranged perpendicular to the substrate,
First part's Sidewall HeightExtremelyHigh reflectance structure is arranged in the position of section, and first part's side wall is high
DegreeExtremelyAntiradar reflectivity structure is arranged in the position of section；
The second part Sidewall HeightExtremelyAntiradar reflectivity structure is arranged in the position of section, and first part's side wall is high
DegreeExtremelyLow high refractive index structure is arranged in the position of section；
Wherein H is the height of the side wall, and n is the positive integer more than or equal to 1.
5. backing structure as claimed in claim 4, which is characterized in that
First part's Sidewall HeightTo H sections of positions, the high reflectance structure, first part's Sidewall Height are setExtremelyThe antiradar reflectivity structure, first part's Sidewall Height is arranged in the position of sectionExtremelyThe height is arranged in the position of section
Reflectivity texture；
The second part Sidewall HeightTo H sections of positions, the antiradar reflectivity structure, the second part Sidewall Height are setExtremelyThe high reflectance structure, the second part Sidewall Height is arranged in the position of sectionExtremelyThe position setting of section is described low
Reflectivity texture.
6. the backing structure as shown in claim 2, which is characterized in that the barricade includes extending in a second direction and in third
First barricade of direction repeated arrangement and extend along third direction and in the second barricade of second direction repeated arrangement, described first
Direction and second direction intersection；The light pooling zone is to pass through the geometric center of the luminous zone simultaneously on the luminous zone
Along the axis that the second direction extends, first part's side wall and shown second part side wall are located at and the leaded light
On the first adjacent barricade of chamber.
7. backing structure as claimed in claim 2, which is characterized in that the reflectivity of the high reflectance structure and the light
The intensity positive correlation of the emergent light of pooling zone, the reflectivity size by adjusting the high reflectance structure can control the light
The intensity of the emergent light of pooling zone.
8. backing structure as described in claim 1, which is characterized in that the brightness of the light source of each guide-lighting intracavitary can
Individually to control.
9. backing structure as described in claim 1, which is characterized in that the light source is made of light emitting diode.
10. backing structure as described in claim 1, which is characterized in that the high reflection structure and the low catoptric arrangement are
Film layer structure on the side wall is arranged using spraying process.
11. backing structure as described in claim 1, which is characterized in that the high reflectance structure and the antiradar reflectivity knot
Structure is the smooth patch of high-precision being attached on the side wall.
12. backing structure as described in claim 1, which is characterized in that the anti-rate of height is penetrated structure and is made of the anti-material of silver, institute
Antiradar reflectivity structure is stated to be made of black material.
13. backing structure as described in claim 1, which is characterized in that the backing structure further includes：
Heat dissipating layer, the heat dissipating layer are located at below the substrate；
Backlight pedestal, the backlight pedestal are located at the lower section of the heat dissipating layer, and also have below the backlight pedestal fan and
Heat radiation air outlet.
14. a kind of display device for mounting on vehicle, it is characterised in that including backing structure described in claim 1 to 12 any one.
15. display device for mounting on vehicle as claimed in claim 14, it is characterised in that the display device for mounting on vehicle further includes liquid crystal
Show panel, reflective projection device and windshield.
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| CN201810169204.6A CN108445628B (en) | 2018-02-28 | 2018-02-28 | Backlight structure and vehicle-mounted display device |
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|---|---|---|---|
| CN201810169204.6A CN108445628B (en) | 2018-02-28 | 2018-02-28 | Backlight structure and vehicle-mounted display device |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN108445628B (en) | 2020-05-22 |
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