CN102681084A - Light guide plate and light source module thereof - Google Patents
Light guide plate and light source module thereof Download PDFInfo
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- CN102681084A CN102681084A CN2012101380899A CN201210138089A CN102681084A CN 102681084 A CN102681084 A CN 102681084A CN 2012101380899 A CN2012101380899 A CN 2012101380899A CN 201210138089 A CN201210138089 A CN 201210138089A CN 102681084 A CN102681084 A CN 102681084A
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Abstract
The invention relates to a light guide plate and a light source module thereof. The light guide plate provided by the invention comprises an incidence face, at least one mirror face, at least one board face, a plurality of light guide microstructures, a light guide plate, and an area light source, wherein the at least one mirror face is adjacent to the incidence face; the at least one board face is adjacent to the incidence face and the mirror face; the light guide microstructures are arranged on the board face; luminance influence parameters of the light guide microstructures are different along with distances between the light guide microstructures and the incidence face; the board face is distinguished into a first area with the mirror face and a second area adjacent to the first area along a normal direction of the mirror face, and captures a first area block from the first area along an extending line parallel to the normal direction, and a second area block from the second area along the extending line; a numerical value of the luminance influence parameter of the first area block is less than a numerical value of the luminance influence parameter of the second area block; the light guide plate can improve the uniformity of emergent light; and the area light source can supply the uniform emergent light.
Description
Technical field
The present invention relates to a kind of light source module, relate in particular to the LGP in this light source module.
Background technology
Cooperate and to consult the first figure a, be the stereographic map of the light source module of prior art.This light source module 50 comprises an at least one light emitting diode 52 and a LGP 54.This light emitting diode 52 has an optical axis A; And the light distribution curve of the light that this light emitting diode 52 sends be along with optical axis A between angle different and different; Wherein light emitting diode 52 is arranged at the initial point (0 of the first figure b; 0) position, and the optical axis A of this light emitting diode 52 overlaps with the coordinate 0 degree position of the first figure b.The position of these light emitting diode 52 beam projectings and the angle between the optical axis A are bigger, and then its corresponding light distributes littler.Secondly, to distribute be to increase and decay along with irradiation distance to the light of this light emitting diode 52.In addition, corresponding respectively this light emitting diode 52 of indication of Ix, Iy that is indicated among the first figure b is at the light distribution curve of X-direction and Y direction.
Consult the first figure a again, this LGP 54 comprises the relative plate face 542 of an incidence surface 540, two, a rear end face 544 and two relative sides 546.In the present embodiment; This LGP 54 is that rectangle plate body and this incidence surface 540 are one of these LGP 54 short side directions (y direction of principal axis in the corresponding diagram) side; This light emitting diode 52 is arranged at this incidence surface 540 and emits beam towards this incidence surface 540; Those plate faces 542 are adjacent to this incidence surface 540 and have the side than large tracts of land for this LGP 54, and the bond length of those plate faces 542 is a, and long limit (x direction in the corresponding diagram) length is b.This rear end face 544 is in the face of this incidence surface 540 and be adjacent to these plate faces 542, and this rear end face 544 is even surface (or claiming minute surface).Those sides 546 are adjacent to this incidence surface 540, those plate faces 542 and this rear end face 544, and those sides 546 are even surface.
One of them plate face 542 is provided with a plurality of leaded light microstructures 5420; Guide to this rear end face 544 effectively with the light that will be incident in this LGP 54; Secondly, get into this LGP 54 light can via the plate face 542 that is provided with these leaded light microstructures 5420 to extraneous outgoing or via another plate face 542 that these leaded light microstructures 5420 are not set to extraneous outgoing.
Characteristic according to aforementioned light emitting diode; For making light source module reach the effect of even bright dipping; Then influencing parameter along the brightness of these leaded light microstructures 5420 of the x direction of principal axis setting of this LGP 54 is along with increasing progressively away from this incidence surface 540 gradually; Shown in the second figure a, make the light that gets into LGP 54 can be directed to rear end face 544 effectively.Secondly, influence parameter along the brightness of those leaded light microstructures 5420 of the y direction of principal axis setting of this LGP 54 must be along with the angle increase of the optical axis A of light emitting diode 52 and increase progressively; In the present embodiment; This light source module 50 is the example explanation to comprise a light emitting diode 52; And this light emitting diode 52 roughly is arranged at the middle of this incidence surface 540, therefore, the brightness of those leaded light microstructures 5420 of y direction of principal axis setting that should LGP 54 is influenced parameter shown in the second figure b; In order to adjust the outgoing light homogeneity of this LGP 54, in the hope of reaching the effect of even bright dipping.Wherein the brightness of those leaded light microstructures 5420 influence parameter can be for the distribution density of those leaded light microstructures 5420, the degree of depth or area are set; And the big zone of numerical value that brightness influences parameter is able to the more light of scattering, and the little zone of numerical value that brightness influences parameter is able to the less light of scattering.
Because this rear end face 544 is an even surface, therefore, the part light that is passed to rear end face 544 is to go out through these rear end face 544 refractions, and other part light is then via returning this LGP 54 after these rear end face 544 reflections, shown in the first figure c.
Those leaded light microstructures 5420 that are adjacent to these rear end face 544 places not only scattering through these rear end face 544 light reflected; Side by side also the light of these LGPs 54 is sent and gets into through this incidence surface 540 in scattering by this light emitting diode 54; The numerical value that the brightness that adds those leaded light microstructures 5420 that are adjacent to these rear end face 544 places influences parameter is big; Cause this plate face 542 in the light in the zone that is adjacent to this rear end face 544 go out light intensity greater than other zone that is away from this rear end face 544, make this light source module 50 produce the problem of brightness disproportionations.Moreover because those sides 546 also are even surface, the zone that therefore is adjacent to those sides 546 also can produce the problem of brightness disproportionation as stated.
Summary of the invention
The technical issues that need to address of the present invention have provided a kind of LGP, are intended to solve the above problems.
The present invention also provides the light source module that adopts above-mentioned LGP.
In order to solve the problems of the technologies described above, the present invention realizes through following technical scheme:
LGP of the present invention comprises: an incidence surface; At least one minute surface; Said at least one minute surface is adjacent to this incidence surface; At least one plate face; Said at least one plate face is adjacent to this incidence surface and this minute surface; Plural number leaded light microstructure; Said plural leaded light microstructure is arranged at this plate face, and it is along with different with the distance of this incidence surface that the brightness of those leaded light microstructures influences parameter; This plate face along the normal direction of this minute surface divide into one have this minute surface a first area and a second area adjacent to this first area; And along one be parallel to this normal direction extension line capture one first block in this first area; And capturing one second block along this extension line in this second area, the numerical value that the brightness of this first block influences parameter influences the numerical value of parameter less than the brightness of this second block.
Light source module of the present invention comprises: at least one luminescence component; One LGP; Said LGP comprises: an incidence surface; This luminescence component is arranged at this incidence surface; At least one minute surface; Said at least one minute surface is adjacent to this incidence surface; At least one plate face; Said at least one plate face is adjacent to this incidence surface and this minute surface; Plural number leaded light microstructure; Said plural leaded light microstructure is arranged at this plate face, and it is along with different with the distance of this incidence surface that the brightness of those leaded light microstructures influences parameter; This plate face is divided into along the normal direction of this minute surface has one of this a minute surface first area and a second area adjacent to this first area; And along one be parallel to this normal direction extension line capture one first block in this first area; And capturing one second block along this extension line in this second area, the numerical value that the brightness of this first block influences parameter influences the numerical value of parameter less than the brightness of this second block.
Compared with prior art, the invention has the beneficial effects as follows: can promote the LGP of outgoing light homogeneity and the area source that even bright dipping can be provided.
Description of drawings
Fig. 1 a is the stereographic map of the light source module of prior art.
Fig. 1 b is the light distribution curve figure of light emitting diode.
Fig. 1 c is that light is in the inner bang path figure of this LGP.
Fig. 2 a is the curve map that the brightness of leaded light microstructure of y direction of principal axis of the LGP of prior art influences parameter.
Fig. 2 b is the curve map that the brightness of leaded light microstructure of x direction of principal axis of the LGP of prior art influences parameter.
Fig. 3 is the stereographic map of the light source module of first embodiment of the invention.
Fig. 4 is the vertical view of the light source module of first embodiment of the invention.
Fig. 5 is the curve map that the brightness of leaded light microstructure of y direction of principal axis of the LGP of first embodiment of the invention influences parameter.
Fig. 6 is the distribution density synoptic diagram of leaded light microstructure of the LGP of corresponding first embodiment of the invention.
Fig. 7 is provided with the depth profile synoptic diagram for the leaded light microstructure of the LGP of corresponding first embodiment of the invention.
Fig. 8 is the area distributions synoptic diagram of leaded light microstructure of the LGP of corresponding first embodiment of the invention.
Fig. 9 is the stereographic map of the light source module of second embodiment of the invention.
Figure 10 is the stereographic map of the light source module of third embodiment of the invention.
Figure 11 is the cut-open view of the light source module of third embodiment of the invention.
Figure 12 is the curve map that the brightness of leaded light microstructure of y direction of principal axis of the LGP of third embodiment of the invention influences parameter.
Figure 13 is the stereographic map of the light source module of fourth embodiment of the invention.
Figure 14 is the vertical view of the light source module of fourth embodiment of the invention.
Figure 15 is the curve map that the brightness of leaded light microstructure of x direction of principal axis of the LGP of fourth embodiment of the invention influences parameter.
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is described in further detail:
Said in view of prior art, one of the present invention purpose is to provide a kind of LGP that can promote outgoing light homogeneity.
Another object of the present invention is to provide a kind of light source module with above-mentioned LGP, and this light source module can provide the area source of even bright dipping.
For reaching above-mentioned purpose, the present invention provides a kind of LGP, and this LGP comprises an incidence surface, at least one minute surface, at least one plate face and plural leaded light microstructure.This minute surface is adjacent to this incidence surface, and this plate face is adjacent to this incidence surface and this minute surface.These leaded light microstructures are arranged at this plate face, and it is along with different with the distance of this incidence surface that the brightness of those leaded light microstructures influences parameter; Wherein, This plate face along the normal direction of this minute surface divide into one have this minute surface a first area and a second area adjacent to this first area; And along one be parallel to this normal direction extension line capture one first block in this first area; And capturing one second block along this extension line in this second area, the numerical value that the brightness of this first block influences parameter influences the numerical value of parameter less than the brightness of this second block.
According to a specific embodiment of the present invention, wherein the brightness of those leaded light microstructures influence parameter for the distribution density of those leaded light microstructures, wherein at least one of the degree of depth and area is set.
According to a specific embodiment of the present invention; Wherein otherwise this LGP comprises the two-phase minute surface; Be adjacent to this incidence surface and this plate face respectively; This plate face along normal direction of one of them minute surface etc. divide into two have this minute surface a first area and a second area adjacent to these first areas; And along one be parallel to this normal direction extension line capture one first block respectively in these first areas, and capture one second block along this extension line in this second area, the numerical value that the brightness of these first blocks influences parameter influences the numerical value of parameter less than the brightness of this second block.
According to a specific embodiment of the present invention, wherein this first block is measure-alike in the size of this second block.
The present invention more provides a kind of LGP, and this LGP comprises an incidence surface, a minute surface, at least one plate face and plural leaded light microstructure.This minute surface is in the face of this incidence surface, and this plate face is in abutting connection with this incidence surface and this minute surface.Those leaded light microstructures are arranged at this plate face, and it is along with different with the distance of this incidence surface that the brightness of those leaded light microstructures influences parameter; Wherein, Along a plurality of blocks that equidistantly distribute of one of the normal direction that is parallel to this minute surface extension line acquisition; The brightness of one of them block influences parameter and has a maximal value, and the numerical value that the brightness of another block of contiguous this minute surface influences parameter is less than this maximal value.
According to a specific embodiment of the present invention, wherein the brightness of those leaded light microstructures influence parameter for the distribution density of those leaded light microstructures, wherein at least one of the degree of depth and area is set.
According to a specific embodiment of the present invention, wherein the size of those blocks is all identical.
The present invention more provides a kind of light source module, and this light source module comprises an at least one luminescence component and a LGP, and this LGP comprises an incidence surface, at least one minute surface, at least one plate face and plural leaded light microstructure.This luminescence component is arranged at this incidence surface; This minute surface is adjacent to this incidence surface; This plate face is adjacent to this incidence surface and this minute surface, and those leaded light microstructures are arranged at this plate face, and it is along with different with the distance of this incidence surface that the brightness of those leaded light microstructures influences parameter; Wherein, This plate face is divided into along the normal direction of this minute surface has one of this a minute surface first area and a second area adjacent to this first area; And along one be parallel to this normal direction extension line capture one first block in this first area; And capturing one second block along this extension line in this second area, the numerical value that the brightness of this first block influences parameter influences the numerical value of parameter less than the brightness of this second block.
According to a specific embodiment of the present invention, wherein the brightness of those leaded light microstructures influence parameter for the distribution density of these leaded light microstructures, wherein at least one of the degree of depth and area is set.
According to a specific embodiment of the present invention; Wherein otherwise this LGP comprises the two-phase minute surface; Be adjacent to this incidence surface and this plate face respectively; This plate face along the normal direction of one of them minute surface divide into two have this minute surface a first area and a second area adjacent to these first areas; And along one be parallel to this normal direction extension line capture one first block respectively in those first areas, and capture one second block along this extension line in this second area, the numerical value that the brightness of these first blocks influences parameter influences the numerical value of parameter less than the brightness of this second block.
According to a specific embodiment of the present invention, wherein this first block is measure-alike in the size of this second block.
According to a specific embodiment of the present invention, more comprise a reflecting element, be arranged at one of this minute surface side.
The present invention more provides a kind of light source module, and this light source module comprises an at least one luminescence component and a LGP.This LGP comprises an incidence surface, a minute surface, at least one plate face and plural leaded light microstructure.This luminescence component is arranged at this incidence surface; This minute surface regards to this incidence surface; This plate face is adjacent to this incidence surface and this minute surface, and these leaded light microstructures are arranged at this plate face, and it is along with different with the distance of this incidence surface that the brightness of these leaded light microstructures influences parameter; Wherein, along a plurality of blocks that equidistantly distribute of one of the normal direction that is parallel to this minute surface extension line acquisition, the brightness of one of them block influences parameter and has a maximal value, and the numerical value that influences parameter of another block of contiguous this minute surface is less than this maximal value.
According to a specific embodiment of the present invention, wherein the brightness of those leaded light microstructures influence parameter for the distribution density of those leaded light microstructures, wherein at least one of the degree of depth and area is set.
According to a specific embodiment of the present invention, wherein the size of those blocks is all identical.
According to a specific embodiment of the present invention, more comprise a reflecting element, be arranged at one of this minute surface side.
Cooperate and to consult the 3rd figure and the 4th figure, be the stereographic map and the vertical view of the light source module of first embodiment of the invention.This light source module 10 comprises an at least one luminescence component 12 and a LGP 14.The quantity of this luminescence component 12 can be for one or more; In the present embodiment; This light source module 10 is the example explanation to comprise a luminescence component 12; And this luminescence component 12 preferably is that (light emitting diode LED), but must know that this is not to be the restriction to the present invention to light emitting diode.
This LGP 14 roughly is tabular, mainly in order to the scattering direction of control light, guides into a planar light source with the point source of light that this luminescence component 12 is sent.This LGP 14 is to use light-transmitting materials to process, as: the compound substance of polymethyl methacrylate (PMMA), synthetic resin, propylene (acryl), polycarbonate (PC), polyester (PET), polyolefin (Polyolefines), glass or above-mentioned material.
This LGP 14 comprises an incidence surface 140, at least one minute surface 142, at least one plate face 144 and plural leaded light microstructure 146.In present embodiment, this LGP 14 is the rectangle plate body, and this incidence surface 140 is one of these LGP 14 short side directions (y direction of principal axis in the corresponding diagram) side, but must know that this is not to be the restriction to the present invention; This luminescence component 12 is arranged at this incidence surface 140 and emits beam towards this incidence surface 140.This minute surface 142 is adjacent to this incidence surface 140, and wherein this minute surface 142 can for burnishing surface or through the polished surface of polishing, in present embodiment, this minute surface 142 be one of these LGP 14 long side directions (x direction of principal axis in the corresponding diagram) side.This plate face 144 is adjacent to this incidence surface 140 and this minute surface 142, and in present embodiment, this LGP 14 has two relative plate faces 144, and this two plates face 144 has than one of large tracts of land side for this LGP 14, and the axial length of the y of these plate faces 144 is a.
Those leaded light microstructures 146 are arranged at one of them at least one plate face 144, and the brightness of those leaded light microstructures 146 to influence parameter be along with different with the distance of this incidence surface 140.In present embodiment, those leaded light microstructures 146 are arranged at one of them plate face 144, and this plate face 144 is the exiting surface of this LGP 14 simultaneously; During actual enforcement; Those leaded light microstructures 146 can be arranged at one of them plate face 144, and the exiting surface of LGP 14 is another plate face 144, perhaps; Those leaded light microstructures 146 can side by side be arranged at this two plates face 144, and one of them plate face 144 is the exiting surface of LGP 140.Secondly; In present embodiment; The contour shape of those leaded light microstructures 146 is an example with regularly arranged circle; During actual enforcement, the contour shape of those leaded light microstructures 146 can or comprise above-mentioned multiple external form profile simultaneously for ellipse, polygon, any geometric figure, and can be regularly arranged or irregular alignment.
The brightness of those leaded light microstructures 146 influence parameter for the distribution density of those leaded light microstructures 146, wherein at least one of the degree of depth and area is set; And the high block of numerical value that brightness influences parameter is able to the more light quantity of scattering, and the little block of numerical value that brightness influences parameter is able to the less light quantity of scattering.
This plate face 144 is to divide into a first area 1440 and a second area 1442 adjacent to this first area 1440 along one of this minute surface 142 normal (normal) direction n, and this first area 1440 comprises this minute surface 142.The area of this first area 1440 can be same as the area of this second area 1442; Perhaps; The area of this first area 1440 can be inequality in the area of this second area 1442; In present embodiment, the area that is same as this second area 1442 with the area of this first area 1440 is the example explanation, but must know that this is not to be the restriction to the present invention.
Afterwards, along one be parallel to this normal direction n extension line L in this first area 1440, capture one first block 1441, this first block 1441 is adjacent to this minute surface 142 but does not comprise this minute surface 142.Side by side; In this second area 1442, capture one second block 1443 along this extension line L; The size of this second block 1443 must be same as the size of this first block 1441, and wherein this size is meant the external form profile and the area of this first block 1441 and this second block 1443.In present embodiment, the external form profile of this first block 1441 and this second block 1443 is the example explanation with the square, and during actual enforcement, this first block 1441 and this second block 1443 can be circle, polygon or other geometric configuration.
The numerical value that the brightness of this first block 1441 influences parameter influences the numerical value of parameter less than the brightness of this second block 1443, and the curve map that the brightness of those leaded light microstructures 146 of y direction of principal axis that should LGP 14 is influenced parameter is shown in the 5th figure; Wherein, the high block of numerical value that brightness influences parameter is able to the more light quantity of scattering, and the little block of numerical value that brightness influences parameter is able to the less light quantity of scattering.
The light that is sent by this luminescence component 12 is to get into this LGP 14 through this incidence surface 140, and these leaded light microstructure 146 guiding get into the light of this LGP 14, make light be able to be passed to arbitrary corner of this LGP 14; Wherein, the part light that is passed to this minute surface 142 is directly to refract to the external world, and part light is then by these minute surface 142 reflections and return this LGP 14 inside; Add that this first area 1440 is adjacent to this minute surface 142, therefore, the most of light that returns this LGP 140 after 142 reflections of this minute surface be through after these leaded light microstructure 146 scatterings of this first area 1440 by these plate face 144 bright dippings.Know by aforementioned; Those leaded light microstructure 146 scatterings side by side of this first area 1440 are through these incidence surface 140 light and pass through the part light that this minute surface 142 reflects; For avoiding the light intensity that goes out that 144 pairs in this plate face should 1440 places, first area to make this light source module 10 produce the uneven situation of bright dippings greater than second area 1442, then the brightness of first block 1441 influences parameter and must influence parameter less than the brightness of this second block 1443.Cooperate and consult the 5th figure; The numerical value that the brightness of those leaded light microstructures 146 influences parameter little by little successively decreases in being adjacent to these minute surface 142 places (being a place in the neighborhood graph); And the brightness near those leaded light microstructures 146 at these minute surface 142 places influences parameter for minimum; Reach even bright dipping to adjust the amount of light of this LGP 14, to make.
It is to influence this LGP outgoing light homogeneity that the brightness of those leaded light microstructures 146 influences parameter, below respectively with regard to the distribution density of these leaded light microstructures 146, the degree of depth and area are set in the set-up mode narration of LGP 14; Wherein the brightness of the LGP 14 shown in the 3rd figure influences the distribution density of parameter for those leaded light microstructures 146.During actual enforcement, the brightness of those leaded light microstructures 146 influences distribution density that parameter can comprise these leaded light microstructures 146 simultaneously, the degree of depth and area is set.
Cooperate and to consult the 6th figure, be the distribution density synoptic diagram of the leaded light microstructure of the LGP of corresponding first embodiment of the invention.The distribution density of those leaded light microstructures 146 is meant the area that is distributed in the block of these leaded light microstructures 146 respectively at same size.Shown in the 6th figure; The distribution area of those leaded light microstructures 146 in this first block 1441 is significantly less than the distribution area of those leaded light microstructures 146 of this second block 1443; Therefore, the distribution density of those leaded light microstructures 146 in this first block 1441 certainly will be less than the distribution density of those leaded light microstructures 146 in this second block 1443.Moreover; This second area 1443 that those leaded light microstructure 146 distribution densities are big is able to the more light quantity of scattering; This first block 1441 that those leaded light microstructure 146 distribution densities are little is able to the less light quantity of scattering, uses so that this LGP 14 reaches the effect of even bright dipping.
Cooperate and to consult the 7th figure, the depth profile synoptic diagram is set for the leaded light microstructure of the LGP of corresponding first embodiment of the invention.Those leaded light microstructures 146 the height that the degree of depth is meant the degree of depth of those leaded light microstructures 146 recessed these plate faces 144 or protrudes from this plate face 144 is set, in present embodiment, be the example explanation with the degree of depth of those leaded light microstructures 146 recessed these plate faces 144.Shown in the 7th figure, these leaded light microstructures 146 in this first block 1441 the degree of depth is set significantly less than the degree of depth that is provided with of these leaded light microstructures 146 in this second block 1443.Moreover, those dark leaded light microstructures 146 of the degree of depth being set being able to the more light quantity of scattering, these leaded light microstructures 146 that depth as shallow is set are able to the less light quantity of scattering, use so that this LGP 14 reaches the effect of even bright dipping.
Cooperate and to consult the 8th figure, be the area distributions synoptic diagram of the leaded light microstructure of the LGP of corresponding first embodiment of the invention.The area of those leaded light microstructures 146 is meant the range size that the type profile is surrounded outside those leaded light microstructures 146.Shown in the 8th figure, the area of those leaded light microstructures 146 in this first block 1441 is significantly less than the area of these leaded light microstructures 146 in this second block 1443.Moreover those leaded light microstructures 146 that area is big are able to the more light quantity of scattering, and those leaded light microstructures 146 that area is little are able to the less light quantity of scattering, so that this LGP 14 reaches the effect of even bright dipping.
Cooperate and to consult the 9th figure, be the stereographic map of the light source module of second embodiment of the invention.The light source module 10a of present embodiment is similar with the light source module 10 of first embodiment, and identical assembly indicates with identical symbol.Difference that it should be noted that both is: the light source module 10a shown in the 9th figure more comprises a reflecting element 16, is arranged at one of this minute surface 142 side.This reflecting element 16 can be through sticking together the reflector plate that part (figure does not show) fits in one of this minute surface 142 side; Perhaps this reflecting element 16 also can be formed at the reflectance coating of these minute surface 142 1 sides through film-plating process; And this reflecting element 16 can be white in color or silver color etc. has the color of preferable reflecting effect; When reality is implemented, can adjust the color of reflection subassembly 16 according to actual demand or restriction.This reflecting element 16 is mainly in order to the light of reflection through this minute surface 142, to promote the service efficiency of light.The function and the related description of each assembly of this luminescence component 12 and this LGP 14, in fact the LGP 14 with first embodiment is identical, does not repeat them here.
Cooperate and consult the tenth figure and the 11 figure, be respectively the stereographic map and the vertical view of the light source module of third embodiment of the invention.This light source module 20 comprises an at least one luminescence component 22 and a LGP 24, and this LGP 24 is to use light-transmitting materials one of to process roughly rectangular plate body and comprises an incidence surface 240, two minute surfaces 242, at least one plate face 244 and plural leaded light microstructure 246.
This luminescence component 22 is arranged at this incidence surface 240 and emits beam towards this incidence surface 240, and those minute surfaces 242 are adjacent to this incidence surface 240, and this plate face 244 is adjacent to this incidence surface 240 and those minute surfaces 242.In present embodiment; This incidence surface 240 is one of these LGP 24 short side directions (y direction of principal axis in the corresponding diagram) side; This minute surface 242 is one of these LGP 24 long side directions (x direction of principal axis in the corresponding diagram) side; This plate face 244 has than one of large tracts of land side for this LGP 24, and the axial length of the y of this plate face 244 is a, but must know that this is not to be the restriction to the present invention.The quantity of this luminescence component 22 can be for one or more, and in present embodiment, the quantity of this luminescence component 22 is example with one, and preferably, this luminescence component 22 is a light emitting diode.
Those leaded light microstructures 246 are arranged at this plate face 244, and the brightness of those leaded light microstructures 246 to influence parameter be along with different with the distance of this incidence surface 240.In present embodiment, the contour shape of those leaded light microstructures 246 is an example with regularly arranged circle, does not then limit with this during actual enforcement.
The brightness of those leaded light microstructures 246 influences parameter can be for the distribution density of those leaded light microstructures 246 (shown in the tenth figure), one of at least person wherein of the degree of depth and area is set; Perhaps, the brightness of these leaded light microstructures 246 influence parameter can be simultaneously for the distribution density of these leaded light microstructures 246, the degree of depth and area are set.Secondly, the high block of numerical value that brightness influences parameter is able to the more light quantity of scattering, and the little block of numerical value that brightness influences parameter is able to the less light quantity of scattering.
This plate face 244 be the normal direction n along one of them minute surface 242 divide into two have this minute surface 242 a first area 2440 and a second area 2442 adjacent to these first areas 2440.The area of these first areas 2440 can be same as the area of this second area 2442; Perhaps; The area of these first areas 2440 can be inequality in the area of this second area 2442; In present embodiment, the area that is same as this second area 2442 with the area of these first areas 2440 is the example explanation, but must know that this is not to be the restriction to the present invention.
Afterwards; Along one be parallel to this normal direction n extension line L capture one first block 2441 respectively in these first areas 2440; Side by side; In this second area 2442 acquisitions one second block 2443, the size of this second block 2443 must be same as the size of this first block 2441 along this extension line L, and wherein above-mentioned size is meant the external form profile and the area of this first area 2441 and this second block 2443.In present embodiment, the external form profile of this first block 2441 and this second block 2443 is the example explanation with the square, does not then limit with this during actual enforcement.
Because respectively those leaded light microstructure 246 scatterings side by side of this first area 2440 are through the light of these incidence surface 240 these LGPs 24 of entering and through returning the part light of this LGP 24 after respectively this minute surface 242 reflects; The light intensity that goes out for fear of these plate face 244 corresponding those 2440 places, first area causes the uneven problem of bright dipping greater than second area 2442; Then the brightness of those leaded light microstructures 246 numerical value that influences parameter in be adjacent to these minute surface 242 places (be in the neighborhood graph 0 and a shown in) little by little successively decrease; And the brightness near those leaded light microstructures 246 at these minute surface 242 places influences parameter for minimum; Shown in the 12 figure; Influence the curve map of parameter for brightness to those leaded light microstructures 246 of y direction of principal axis that should LGP 24; Influence parameter through the brightness of adjusting those leaded light microstructures 246 and reach even bright dipping to adjust the amount of light of this LGP 24, to make.
Consult the tenth figure again; The distribution area of those leaded light microstructures 246 in these first blocks 2441 is significantly less than the distribution area of these leaded light microstructures 246 of this second block 2443; Therefore, the distribution density of those leaded light microstructures 246 in these first blocks 2441 certainly will be less than the distribution density of these leaded light microstructures 246 in this second block 2443.Moreover; This second area 2443 that those leaded light microstructure 246 distribution densities are big is able to the more light quantity of scattering; These first blocks 2441 that those leaded light microstructure 246 distribution densities are little are able to the less light quantity of scattering, so that this LGP 24 reaches the effect of even bright dipping.
Likewise; When the brightness of those leaded light microstructures 246 influence parameter for these leaded light microstructures 246 the degree of depth is set the time, the degree of depth that is provided with of these leaded light microstructures 246 in those first blocks 2441 must be less than the degree of depth that is provided with of those leaded light microstructures 246 in this second block 2443.And when the brightness of those leaded light microstructures 246 influenced parameter for the area of those leaded light microstructures 246, the area of those leaded light microstructures 246 in those first blocks 2441 must be less than the area of these leaded light microstructures 246 in this second block 2443.Thus, just can reduce light in being adjacent to the probability that these minute surface 242 places are scattered, so that this LGP 24 reaches the effect of even bright dipping.
Cooperate and consult the 13 figure and the 14 figure, be respectively the stereographic map and the vertical view of the light source module of fourth embodiment of the invention.This light source module 30 comprises an at least one luminescence component 32 and a LGP 34, and this LGP 34 is to use light-transmitting materials one of to process roughly rectangular plate body and comprises an incidence surface 340, a minute surface 342, at least one plate face 344 and plural leaded light microstructure 346.
This luminescence component 32 is arranged at this incidence surface 340 and emits beam towards this incidence surface 340, and this minute surface 342 is in the face of this incidence surface 340, and this plate face 344 is in abutting connection with this incidence surface 340 and this minute surface 342.In present embodiment; This incidence surface 340 is one of these LGP 34 short side directions (y direction of principal axis in the corresponding diagram) side; This plate face 344 has than one of large tracts of land side for this LGP 34, and the axial length of the x of this plate face 344 is b, but must know that this is not to be the restriction to the present invention.The quantity of this luminescence component 32 can be for one or more, and in present embodiment, the quantity of this luminescence component 32 is example with one, and preferably, this luminescence component 32 is a light emitting diode.
Those leaded light microstructures 346 are arranged at this plate face 344, and the brightness of those leaded light microstructures 346 to influence parameter be along with different with the distance of this incidence surface 340.In present embodiment, the contour shape of those leaded light microstructures 346 is an example with regularly arranged circle, does not then limit with this during actual enforcement.
The brightness image parameters of those leaded light microstructures 346 can be for the distribution density of these leaded light microstructures 346 (shown in the 13 figure), one of at least person wherein of the degree of depth and area is set; Perhaps, the brightness of these leaded light microstructures 346 influence parameter can be simultaneously for the distribution density of those leaded light microstructures 346, the degree of depth and area are set.Secondly, the high block 3440 of numerical value that brightness influences parameter is able to the more light quantity of scattering, and the little block 3440 of numerical value that brightness influences parameter is able to the less light quantity of scattering.
This plate face 344 is along a plurality of blocks that equidistantly distribute 3440 of one of normal direction n that is parallel to this minute surface 342 extension line L acquisition, and the size of those blocks 3440 is all identical, and wherein above-mentioned size is meant the external form profile and the area in those zones 3440.In present embodiment, this plate face 344 comprises six blocks 3440, and the external form profile of those blocks 3440 is the example explanation with the square, does not then limit with this during actual enforcement.The brightness of one of them block 3440 of these blocks 3440 influences parameter and has a maximal value.Because these these leaded light microstructure 346 scatterings side by side that are adjacent to this minute surface 342 are through the light of these incidence surface 340 these LGPs 34 of entering and through returning the part light of this LGP 34 after these minute surface 342 reflections; Go out light intensity greater than other zone for fear of this plate face 344 in what be adjacent to these minute surface 342 places; Then the brightness of those leaded light microstructures 346 numerical value that influences parameter must successively decrease along with contiguous this minute surface 342 little by little (be in the neighborhood graph shown in the b); Make brightness influence parameter influences parameter less than brightness maximal value near those leaded light microstructures 346 at these minute surface 342 places; Shown in the 15 figure; Brightness through these leaded light microstructures 346 influences parameter and reaches even bright dipping to adjust the amount of light of this LGP 34, to make.
Consult the 13 figure again; The distribution density of those leaded light microstructures 346 of one of them block has maximal value (second block 3440 calculated in the right side), and the distribution density of these leaded light microstructures 346 of block 3440 (first block 3440 is calculated in the right side) that is adjacent to this minute surface 342 is less than this maximal value.Moreover what those leaded light microstructure 346 distribution densities were big should be able to the more light quantity of scattering in zone 3440, and this block 3440 that those leaded light microstructure 346 distribution densities are little is able to the less light quantity of scattering, so that this LGP 34 reaches the effect of even bright dipping.
Likewise; When the brightness of those leaded light microstructures 346 influence parameter for those leaded light microstructures 346 the degree of depth is set the time; Those of this one of them block 3440 are provided with the degree of depth and have a maximal value, and be adjacent to this minute surface 342 block 3440 those leaded light microstructures 346 the degree of depth is set less than this maximal value.And when the brightness of those leaded light microstructures 346 influences parameter for the area of those leaded light microstructures 346; The area of these leaded light microstructures 346 of one of them block 3440 has a maximal value, and the area of these leaded light microstructures 346 of block 3440 that is adjacent to this minute surface 342 is less than this maximal value.Thus, just can reduce light in being adjacent to the probability that these minute surface 342 places are scattered, so that this LGP 34 reaches the effect of even bright dipping.
Right the above; Be merely the present invention's preferred embodiment; When the scope that can not limit the present invention's enforcement, promptly all equalizations of doing according to claim of the present invention change and modify etc., all should still belong in the category of claim of the present invention institute covering scope intention protection.
Claims (9)
1. a LGP comprises: an incidence surface; It is characterized in that also comprising: at least one minute surface; Said at least one minute surface is adjacent to this incidence surface; At least one plate face; Said at least one plate face is adjacent to this incidence surface and this minute surface; Plural number leaded light microstructure; Said plural leaded light microstructure is arranged at this plate face, and it is along with different with the distance of this incidence surface that the brightness of those leaded light microstructures influences parameter; This plate face along the normal direction of this minute surface divide into one have this minute surface a first area and a second area adjacent to this first area; And along one be parallel to this normal direction extension line capture one first block in this first area; And capturing one second block along this extension line in this second area, the numerical value that the brightness of this first block influences parameter influences the numerical value of parameter less than the brightness of this second block.
2. LGP according to claim 1 is characterized in that: the brightness of those leaded light microstructures influence parameter for the distribution density of those leaded light microstructures, wherein at least one of the degree of depth and area is set.
3. LGP according to claim 1 is characterized in that: this LGP comprises: on the contrary the two-phase minute surface; Otherwise said two-phase minute surface is adjacent to this incidence surface and this plate face respectively; This plate face along the normal direction of one of them minute surface divide into two have this minute surface a first area and a second area adjacent to those first areas; And along one be parallel to this normal direction extension line capture one first block respectively in those first areas; And capturing one second block along this extension line in this second area, the numerical value that the brightness of those first blocks influences parameter influences the numerical value of parameter less than the brightness of this second block.
4. according to claim 1 or 3 described LGPs, it is characterized in that: this first block measure-alike in the size of this second block.
5. a light source module comprises: at least one luminescence component; One LGP; It is characterized in that: said LGP comprises: an incidence surface; This luminescence component is arranged at this incidence surface; At least one minute surface; Said at least one minute surface is adjacent to this incidence surface; At least one plate face; Said at least one plate face is adjacent to this incidence surface and this minute surface; Plural number leaded light microstructure; Said plural leaded light microstructure is arranged at this plate face, and it is along with different with the distance of this incidence surface that the brightness of those leaded light microstructures influences parameter; This plate face is divided into along the normal direction of this minute surface has one of this a minute surface first area and a second area adjacent to this first area; And along one be parallel to this normal direction extension line capture one first block in this first area; And capturing one second block along this extension line in this second area, the numerical value that the brightness of this first block influences parameter influences the numerical value of parameter less than the brightness of this second block.
6. light source module according to claim 5 is characterized in that: the brightness of those leaded light microstructures influence parameter for the distribution density of these leaded light microstructures, wherein at least one of the degree of depth and area is set.
7. light source module according to claim 5 is characterized in that: this LGP comprises: on the contrary the two-phase minute surface; Otherwise said two-phase minute surface is adjacent to this incidence surface and this plate face respectively; This plate face along the normal direction of one of them minute surface divide into two have this minute surface a first area and a second area adjacent to those first areas; And along one be parallel to this normal direction extension line capture one first block respectively in these first areas; And capturing one second block along this extension line in this second area, the numerical value that the brightness of these first blocks influences parameter influences the numerical value of parameter less than the brightness of this second block.
8. according to claim 5 or 7 described light source modules, it is characterized in that: this first block measure-alike in the size of this second block.
9. light source module according to claim 5 is characterized in that also comprising: a reflecting element; Said reflecting element is arranged at one of this minute surface side.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012101380899A CN102681084A (en) | 2012-05-04 | 2012-05-04 | Light guide plate and light source module thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012101380899A CN102681084A (en) | 2012-05-04 | 2012-05-04 | Light guide plate and light source module thereof |
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| CN102681084A true CN102681084A (en) | 2012-09-19 |
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| CN2012101380899A Pending CN102681084A (en) | 2012-05-04 | 2012-05-04 | Light guide plate and light source module thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103901522A (en) * | 2012-12-27 | 2014-07-02 | 鸿富锦精密工业（深圳）有限公司 | Light guide plate and backlight module |
| CN104614801A (en) * | 2015-02-26 | 2015-05-13 | 苏州茂立光电科技有限公司 | Lateral-entrance backlight module and lateral-entrance light guide plate |
| CN114815298A (en) * | 2022-04-28 | 2022-07-29 | 浙江大学 | Waveguide type high-uniformity directional backlight system for naked eye three-dimensional display |
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| CN1508572A (en) * | 2002-12-20 | 2004-06-30 | 鸿富锦精密工业（深圳）有限公司 | Light board and planar light-emitting device |
| CN101025517A (en) * | 2006-02-24 | 2007-08-29 | 鸿富锦精密工业（深圳）有限公司 | Backlight module |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1508572A (en) * | 2002-12-20 | 2004-06-30 | 鸿富锦精密工业（深圳）有限公司 | Light board and planar light-emitting device |
| CN101025517A (en) * | 2006-02-24 | 2007-08-29 | 鸿富锦精密工业（深圳）有限公司 | Backlight module |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103901522A (en) * | 2012-12-27 | 2014-07-02 | 鸿富锦精密工业（深圳）有限公司 | Light guide plate and backlight module |
| CN104614801A (en) * | 2015-02-26 | 2015-05-13 | 苏州茂立光电科技有限公司 | Lateral-entrance backlight module and lateral-entrance light guide plate |
| CN114815298A (en) * | 2022-04-28 | 2022-07-29 | 浙江大学 | Waveguide type high-uniformity directional backlight system for naked eye three-dimensional display |
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Application publication date: 20120919 |