CN102213398B - Light guide plate and light source module - Google Patents
Light guide plate and light source module Download PDFInfo
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- CN102213398B CN102213398B CN 201010161864 CN201010161864A CN102213398B CN 102213398 B CN102213398 B CN 102213398B CN 201010161864 CN201010161864 CN 201010161864 CN 201010161864 A CN201010161864 A CN 201010161864A CN 102213398 B CN102213398 B CN 102213398B
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Abstract
The invention discloses a light guide plate and a light source module. The light guide plate comprises a first surface, a second surface, at least one light incidence surface and a plurality of groove groups, wherein the second surface is opposite to the first surface; the light incidence surface is connected with the first surface and the second surface; the groove groups are dispersedly formed on the second surface; each groove group comprises a plurality of bent grooves; each bent groove has a bent inclined reflecting surface and a bent backlight side surface which are connected with each other; the bent inclined reflecting surface is inclined relative to the first surface; the bent grooves in each groove group are bent towards the same direction; and the bent inclined reflecting surface of one of two adjacent bent grooves and the bent backlight side surface of the other one of the two adjacent bent grooves are connected with each other. A light source module is also provided.
Description
[technical field]
The invention relates to a kind of optical element and light source, and particularly relevant for a kind of light guide plate and light source module.
[background technology]
Existing side light-entering type light source module is to utilize light guide plate will be disposed at the front that light beam that the other light-emitting component of light guide plate sends is directed to light guide plate, to form area source.Generally speaking, after light beam that light-emitting component sends enters light guide plate via the side of light guide plate, can be constantly by the upper and lower surperficial total reflection of light guide plate, and be limited in the light guide plate.Yet, be located at the microstructure on the surface of light guide plate and can destroy total reflection, so that light beam is with the angle incident upper surface less than critical angle, and penetrate upper surface.
Although microstructure can reach the effect of destroying total reflection, most of light beam of the effect of process microstructure is the upper surface of oblique outgoing light guide plate, rather than from the outgoing of upper surface forward.In order to make the outgoing of light beam forward, usually can dispose prismatic lens on the upper surface of the light guide plate of existing light source module, with the driving direction guidance of light beam close to directly over direction.In addition, prismatic lens can return the light beam total reflection of part travel angle light guide plate and again utilize light beam.Yet, all can cause light loss when light beam is many when returning light guide plate by a slice prismatic lens and with the light beam total reflection, and the brightness reduction that the light source module can be provided.
The TaiWan, China patent has disclosed a kind of light guide board microstructure I282021 number, and this microstructure repeated arrangement is in the bottom surface of light guide plate.The TaiWan, China patent has disclosed the light guide plate with multi-layer annular structure I296352 number.This light guide plate has the first annular microstructure and the second annular microstructure.First and second annular microstructure has different bottom width.This microstructure can be positioned at the lower surface of light guide plate.United States Patent (USP) has disclosed bottom surface of light guide plate No. 6454452 and has had wedge-shaped impression, and the inclined-plane of its further groove and the angle of bottom surface can be 43 degree, 45 degree and 47 degree.The TaiWan, China patent has disclosed the light guide plate of the microstructure with certain arrangement regulation for M321111 number.United States Patent (USP) has disclosed the light guide plate with microstructure No. 6612722.The bottom surface that United States Patent (USP) has disclosed light guide plate for No. 6834973 has micro-reflection structure.
[summary of the invention]
The invention provides a kind of light guide plate, can reduce light loss.
The invention provides a kind of light source module, have higher light utilization efficiency.
Other purposes of the present invention and advantage can be further understood from the disclosed technical characterictic of the present invention.
For reaching one of above-mentioned or part or all purposes or other purposes, one of the present invention embodiment proposes a kind of light guide plate, comprises a first surface, a second surface, at least one incidence surface and several groove groups.Second surface is with respect to first surface.Incidence surface connects first surface and second surface.These groove groups are located on the second surface dispersedly.Each groove group comprises several bending grooves, and each bending groove has one of be connected bending sloping reflecter and bending side backlight, and the bending sloping reflecter tilts with respect to first surface.These bending grooves in each groove group are crooked toward same direction, and another bending side backlight of the bending sloping reflecter of one of adjacent two bending grooves and adjacent two bending grooves is connected.
Another embodiment of the present invention proposes a kind of light source module, comprises above-mentioned light guide plate and at least one light-emitting component.Light-emitting component is disposed at by the incidence surface, and is suitable for sending a light beam, and wherein light beam is suitable for entering in the light guide plate via incidence surface, and is suitable for being passed to outside the light guide plate via first surface.The curved incline reflecting surface be suitable for from the beam reflection of incidence surface to first surface.
Accept above-mentionedly, the invention provides a kind of light guide plate, comprising:
One first surface;
One second surface is with respect to this first surface;
At least one incidence surface connects this first surface and this second surface; And
Several groove groups, be located at dispersedly on this second surface, wherein each this groove group comprises several bending grooves, each this bending groove has one of be connected bending sloping reflecter and bending side backlight, this bending sloping reflecter tilts with respect to this first surface, those bending grooves in each this groove group are crooked toward same direction, this bending side backlight of another of the adjacent two bending grooves with this of this bending sloping reflecter of one of adjacent two these bending grooves is connected, those bending sloping reflecters of those bending grooves of each this groove group are not identical in fact with respect to the average slope angle of this first surface, after those bending sloping reflecters of those bending grooves of each this groove group were sorted out according to order from large to small with respect to the average slope angle of this first surface, the difference of adjacent wantonly two these average slope angles was less than or equal to 10 degree on size order.
Described light guide plate is characterized in that: the average slope angle of each this bending sloping reflecter is for extremely spending less than or equal to 60 more than or equal to 30 degree.
Described light guide plate is characterized in that: each this bending groove is an arcuation groove, and this bending sloping reflecter of this arcuation groove is between this bending side backlight and this incidence surface.
Described light guide plate is characterized in that: each this bending groove is an annular recess.
Described light guide plate is characterized in that: this bending sloping reflecter of this bending groove is between a center of curvature of this bending side backlight of this bending groove and this bending groove.
Described light guide plate is characterized in that: this bending side backlight of this bending groove is between a center of curvature of this bending sloping reflecter of this bending groove and this bending groove.
The present invention also provides a kind of light source module, comprising:
One light guide plate comprises:
One first surface;
One second surface is with respect to this first surface;
At least one incidence surface connects this first surface and this second surface; And
Several groove groups, be located at dispersedly on this second surface, wherein each this groove group comprises several bending grooves, each this bending groove has one of be connected bending sloping reflecter and bending side backlight, this bending sloping reflecter tilts with respect to this first surface, those bending grooves in each this groove group are crooked toward same direction, this bending side backlight of another of the adjacent two bending grooves with this of this bending sloping reflecter of one of adjacent two these bending grooves is connected, those bending sloping reflecters of those bending grooves of each this groove group are not identical in fact with respect to the average slope angle of this first surface, and those bending sloping reflecters of those bending grooves of each this groove group are spent less than or equal to 10 with respect to the minimal difference between the average slope angle of this first surface; And
At least one light-emitting component, be disposed at by this incidence surface, and be suitable for sending a light beam, wherein this light beam is suitable for entering in this light guide plate via this incidence surface, and be suitable for being passed to outside this light guide plate via this first surface, this bending sloping reflecter be suitable for from this beam reflection of this incidence surface to this first surface.
Described light source module is characterized in that: the average slope angle of each this bending sloping reflecter is for extremely spending less than or equal to 60 more than or equal to 30 degree.
Described light source module is characterized in that: each this bending groove is an arcuation groove, and this bending sloping reflecter of this arcuation groove is between this bending side backlight and this incidence surface.
Described light source module is characterized in that: each this bending groove is an annular recess.
Described light source module, it is characterized in that: this at least one incidence surface is two relative incidence surfaces, this at least one light-emitting component is for being disposed at respectively the other two light emitting of this two incidence surface, this light source module more comprises a control module, be electrically connected to this two light emitting, to order about the alternately flicker of this two light emitting.
Described light source module is characterized in that: the average slope angle of each this bending sloping reflecter is for extremely spending less than or equal to 50 more than or equal to 30 degree.
Described light source module is characterized in that: the average slope angle of each this bending sloping reflecter is for extremely spending less than or equal to 60 more than or equal to 40 degree.
Described light source module is characterized in that: this bending sloping reflecter of this bending groove is between a center of curvature of this bending side backlight of this bending groove and this bending groove.
Described light source module is characterized in that: this bending side backlight of this bending groove is between a center of curvature of this bending sloping reflecter of this bending groove and this bending groove.
Described light source module is characterized in that: more comprise a reflector element, be disposed on this second surface.
Embodiments of the invention can have at least one of following advantages or effect.In the light guide plate and light source module of embodiments of the invention, second surface is provided with the bending sloping reflecter, and the bending sloping reflecter can reflex to light the direction of expection.Therefore, can reduce light guide plate first surface top blooming piece use amount or do not use blooming piece, so just can reduce light loss and Cost reduction.
For above-mentioned feature and advantage of the present invention can be become apparent, embodiment cited below particularly, and cooperate appended graphic being described in detail below.
[description of drawings]
Figure 1A is the diagrammatic cross-section of the light source module of one of the present invention embodiment.
Figure 1B is light guide plate among Figure 1A and the schematic perspective view of light-emitting component.
Fig. 1 C is the partial enlarged drawing of the second surface among Figure 1A.
Fig. 2 is the bright dipping distribution plan of the light source module of Figure 1A.
Fig. 3 is the partial enlarged drawing of second surface of the light source module of another embodiment of the present invention.
Fig. 4 A be another embodiment of the present invention the light source module on look synoptic diagram.
Fig. 4 B is that the light source module of Fig. 4 A is along the section of I-I line and be disposed at the synoptic diagram of the section of the display panels on the light source module.
Fig. 5 be an again embodiment of the present invention the light source module section and be disposed at the synoptic diagram of the section of the display panels on the light source module.
50: liquid crystal panel
52: active component array base board
54: liquid crystal layer
56: the subtend substrate
100,100i, 100j: light source module
110,110a, 110b: light-emitting component
112: light beam
120: reflector element
130: control module
200,200i: light guide plate
210: first surface
220: second surface
230,230a, 230b: incidence surface
240,240 ', 240i, 240j: groove group
242,242 ', 242a, 242a ', 242ai, 242aj, 242b, 242b ', 242bi, 242bj, 242c, 242c ', 242ci, 242cj, 242i, 242j: bending groove
243,243 ', 243i, 243j: bending sloping reflecter
245,245 ': bending side backlight
C, C ': the center of curvature
D1: first direction
D2: second direction
H1, H2, H3: the degree of depth
L: left eye
P1, P2, P3: width
R: right eye
θ, θ ", θ 1, θ 1 ', θ 2, θ 2 ', θ 3, θ 3 ': average slope angle
[embodiment]
About aforementioned and other technology contents, characteristics and effect of the present invention, in the following detailed description that cooperates with reference to one of graphic preferred embodiment, can clearly present.The direction term of mentioning in following examples such as: upper and lower, left and right, front or rear etc., only is the direction with reference to annexed drawings.Therefore, the direction term of use is to illustrate not to be to limit the present invention.
Figure 1A is the diagrammatic cross-section of the light source module of one of the present invention embodiment, and Figure 1B is light guide plate among Figure 1A and the schematic perspective view of light-emitting component, and Fig. 1 C is the partial enlarged drawing of the second surface among Figure 1A.Please refer to Figure 1A to Fig. 1 C, the light source module 100 of present embodiment comprises a light guide plate 200 and at least one light-emitting component 110 (being as example take several light-emitting components 110) in Figure 1B.Light guide plate 200 comprises a first surface 210, a second surface 220, at least one incidence surface 230 (being as example take an incidence surface 230) and several groove groups 240 in Figure 1A and Figure 1B.Second surface 220 is with respect to first surface 210.Incidence surface 230 connects first surface 210 and second surface 220.In the present embodiment, first surface 210 is parallel in fact second surface 220, and incidence surface 230 is in fact perpendicular to first surface 210 and second surface 220, but the present invention is not as limit.
These groove groups 240 are located on the second surface 220 dispersedly.Each groove group 240 comprises several bending grooves 242 (being as example take three bending groove 242a, 242b, 242c) in Figure 1A, each bending groove 242 has one of be connected bending sloping reflecter 243 and bending side 245 backlight, and wherein bending sloping reflecter 243 tilts with respect to first surface 210.In the present embodiment, bending sloping reflecter 243 and bending side 245 backlight are the surface of light guide plate 200.These bending grooves 242 in each groove group 240 are crooked toward same directions, and another bending side 245 backlight of the bending sloping reflecter 243 of one of adjacent two bending grooves 242 and adjacent two bending grooves 242 is connected.For example, the bending sloping reflecter 243 of bending groove 242b is connected with the side backlight 245 of bending groove 242a.
Light-emitting component 110 is disposed at by the incidence surface, and is suitable for sending a light beam 112.In the present embodiment, each light-emitting component 110 for example is a light emitting diode (light-emitting diode, LED).Yet, in other embodiments, can also replace these light emitting diodes 110 with a fluorescent tube (fluorescent lamp) or other suitable light-emitting components.Light beam 112 is suitable for entering in the light guide plate 200 via incidence surface 230, and is suitable for being passed to outside the light guide plate 200 via first surface 210.In addition, bending sloping reflecter 243 is suitable for the light beam 112 from incidence surface 230 is reflexed to first surface 210.
In the light guide plate 200 and light source module 100 of present embodiment, the bending sloping reflecter 243 that second surface 220 is provided with can reflex to light beam 112 direction of expection.Therefore, can reduce light guide plate 200 first surface 210 tops blooming piece use amount (for example using a lens arra film) or do not use blooming piece, so just can reduce light loss and Cost reduction.For example, when the inclined degree of bending sloping reflecter 243 after suitable design, bending sloping reflecter 243 can make light beam 112 penetrate from light guide plate 200 toward rough direction perpendicular to first surface 210, so first surface 210 tops just can dispose the direction of transfer that prismatic lens is revised light beam 112, and then reduce light loss and cost.
In the present embodiment, each bending groove 242 is an arcuation groove, and the bending sloping reflecter 243 of this arcuation groove is between bending side 245 backlight and incidence surface 230.In the present embodiment, the bending sloping reflecter 243 of bending groove 242 is in the bending of this bending groove 242 side 245 backlight therewith between the center of curvature C of bending groove 242.In addition, in the present embodiment, these bending grooves 242a in each groove group 240, the center of curvature C of 242b, 242c overlap in fact each other, that is these bending grooves 242 are concentric arcuation groove.
In addition, in the present embodiment, bending groove 242, bending sloping reflecter 243 and bending side 245 substantially are parallel on the direction of first surface 210 crooked.Thus, the light beam 112 that bending sloping reflecter 243 reflects just can launch in the direction that is parallel to first surface 210, and can not be confined to specific one party to.In addition, in the present embodiment, bending sloping reflecter 243 also is being bending (illustrating such as Figure 1A) along the transversal that cuts rear gained perpendicular to the direction of first surface 210, light beam 112 is being launched perpendicular to the plane of first surface 210, and can not be confined to specific one party to.Because bending sloping reflecter 243 can make light beam launch, therefore the light beam 112 by first surface 210 outgoing can have comparatively level and smooth light distribution, and can meet the demand than wide viewing angle, and be suitable for being used as the backlight of display panels, or level and smooth light distributed or the illumination of demand is arranged than wide viewing angle as other.Yet in other embodiments, bending sloping reflecter 243 is can also be linearly perpendicular to the transversal on the direction of first surface 210.
In the present embodiment, these bending sloping reflecters 243 of these bending grooves 242 of each groove group 240 are not identical in fact with respect to the average slope angle θ of first surface 210, for example, the average slope angle θ 1 of the sloping reflecter 243 of bending groove 242a, 242b, 242c, θ 2, θ 3 are unequal mutually each other.Because bending sloping reflecter 243 is being bending (the bending transversal that illustrates such as Figure 1A) perpendicular to the transversal on the direction of first surface 210, therefore the tangential direction on the difference on this transversal also may be different with respect to the pitch angle of first surface 210.Average slope angle is defined as after the pitch angle addition of the tangential direction on the every bit on this transversal with respect to first surface 210, again divided by the number of the point on these transversals.Because average slope angle θ 1, θ 2, θ 3 are unequal mutually, therefore the direct of travel that is bent the light beam 112 that the bending sloping reflecter 243 of shape groove 242a, 242b, 242c reflects also can launch perpendicular to the plane of first surface 210, so can make outgoing beam 112 have comparatively level and smooth light distribution, and meet the demand than wide viewing angle.
In the present embodiment, after these bending sloping reflecters 243 of these bending grooves 242 of each groove group 240 were sorted out according to order from large to small with respect to the average slope angle θ of first surface 210, the difference of adjacent wantonly two average slope angle θ was spent less than or equal to 10 on size order.For example, average slope angle θ 1, average slope angle θ 2 for example is 44 degree, 50 degree and 56 degree with the size of average slope angle θ 3, and the differences of 44 degree and 50 degree are less than or equal to 10 degree, and the differences of 50 degree and 56 degree are also less than or equal to 10 degree.In addition, the size that the present invention does not limit average slope angle θ 1, θ 2, θ 3 is ascending, and it can also be descending or random alignment.
In the present embodiment, the average slope angle θ of each bending sloping reflecter 243 extremely spends less than or equal to 60 more than or equal to 30 degree, so can make light beam 210 toward the direction outgoing that approach perpendicular to first surface 210.In the present embodiment, the material of light guide plate 200 is plastic cement (for example acryl).Yet in other embodiments, light guide plate 200 can also be glass, other plastic cement or other suitable light-transmitting materials.In addition, in the present embodiment, bending side 245 backlight can be in fact perpendicular to first surface 210, approaching perpendicular to first surface 210 or relatively first surface 210 inclinations.
These bending grooves 242a of each groove group 240, width P1, P2, the P3 that 242b, 242c make progress in the footpath that gives off from center of curvature C can equate in fact, part is equal or entirely unequal.In addition, these bending grooves 242a of each groove group 240, the depth H 1 of 242b, 242c, H2, H3 can also be equal in fact, and part equates or be entirely unequal.It should be noted that the present invention does not limit each groove group 240 and comprises 3 bending grooves 242, in other embodiments, each groove group 240 can also comprise 2 bending grooves 242 or comprise bending groove 242 more than 4.
In addition, in the present embodiment, the width of each groove group 240 for example is extremely less than or equal to 100 microns more than or equal to 10 microns.Moreover the distribution density of these groove groups 240 on second surface 220 can through design, distribute and make from the light beam 112 of first surface 210 outgoing equably.For example, the number density of these groove groups 240 can be from close incidence surface 230 toward increasing progressively away from incidence surface 230 places.
In the present embodiment, light source module 100 more comprises a reflector element 120, is disposed on the second surface 220.Reflector element 120 for example is one to be suitable for the reflector plate of folded light beam 112.Yet in other embodiments, light source module 100 can also not comprise reflector element 120.
Fig. 2 is the bright dipping distribution plan of the light source module of Figure 1A, and wherein first direction D1 is the direction that is parallel to incidence surface 230, and second direction D2 is the direction perpendicular to incidence surface 230.In the present embodiment, second direction D2 also is parallel to the symmetrical plane by center of curvature C of these bending grooves 242 of groove group 240, but the present invention is not as limit.As shown in Figure 2, no matter the light intensity distributions on first direction D1 or second direction D2 all has certain level and smooth degree, namely along with the visual angle on first direction D1 or the second direction D2 slowly changes, and does not have rapid variation.So light intensity distributions meets the demand of liquid crystal display.
Fig. 3 is the partial enlarged drawing of second surface of the light source module of another embodiment of the present invention.Please refer to Figure 1A, Fig. 1 C and Fig. 3, the light source module of present embodiment and the light source die category of Figure 1A seemingly, and both difference is as described below.In the light source module of present embodiment, the bending sloping reflecter 243 ' that the bending side 245 ' backlight of each bending groove 242 ' of groove group 240 ' (for example bending groove 242a ', 242b ', 242c ') is positioned at this bending groove 242 ' is therewith between the center of curvature C ' of bending groove.So the bending direction of bending sloping reflecter 243 ' also can reach the effect that light beam 112 is launched.
Fig. 4 A be another embodiment of the present invention the light source module on look synoptic diagram, and Fig. 4 B is that the light source module of Fig. 4 A is along the section of I-I line and be disposed at the synoptic diagram of the section of the display panels on the light source module.Please refer to Fig. 4 A and Fig. 4 B, the light source module 100i of present embodiment and the light source module 100 of Figure 1A are similar, and both difference is as described below.In the light source module 100i of present embodiment, each bending groove 242i (for example bending groove 242ai, 242bi, 242ci) of each groove group 240i is an annular recess.It is the extension of the bending groove 242 ' that is arcuation of Fig. 3 and coiled one circle forms that bending groove 242i in the form of a ring can be considered.In the present embodiment, light guide plate 200i has two relative incidence surfaces 230 (for example incidence surface 230a and 230b), and light-emitting component 110 can be divided into light-emitting component 110a and 110b, and light-emitting component 110a and light-emitting component 110b are disposed at respectively by this two incidence surfaces 230a and the 230b.In the present embodiment, light source module 100i more comprises a control module 130, is electrically connected to light-emitting component 110a and 110b, to order about alternately flicker of light-emitting component 110a and 110b.In other words, when light-emitting component 110a sent light beam 112a, light-emitting component 110b did not send light beam 112b, and when light-emitting component 110b sent light beam 112b, light-emitting component 110a did not send light beam 112a.
In the present embodiment, the average slope angle of each bending sloping reflecter 243i is to spending less than or equal to 60 more than or equal to 40 degree.For example, average slope angle θ 1 ', the θ 2 ' of the sloping reflecter 243i of bending groove 242ai, 242bi, 242ci, θ 3 ' can be unequal mutually, but the present invention is not as limit.The configurable liquid crystal panel 50 in light source module 100i top of present embodiment is to form a three-dimensional display.In the present embodiment, liquid crystal panel 50 comprises active component array base board 52, liquid crystal layer 54 and the subtend substrate 56 of from bottom to top sequentially arranging, wherein active component array base board 52 is electric crystal array film substrate for example, and subtend substrate 56 for example is colorful filter array substrate.The light beam 112b that the design of above-mentioned average slope angle can make light-emitting component 110b send is bent shape sloping reflecter 243i toward the upper left side reflection of Fig. 4 B, and after carrying the image of liquid crystal panel 50, be passed to user's left eye L, and the light beam 112a that light-emitting component 110a is sent is bent shape sloping reflecter 243i toward the upper right side reflection of Fig. 4 B, and is passed to user's right eye R behind the image that carries liquid crystal panel 50.Alternately carry left-eye images and right-eye image by light beam 112a and 112b, just can form stereopsis in user's the brain.
Fig. 5 be an again embodiment of the present invention the light source module section and be disposed at the synoptic diagram of the section of the display panels on the light source module.Please refer to Fig. 5, the light source module 100i of the light source module 100j of present embodiment and Fig. 4 B is similar, and both Main Differences are the setting difference of the average slope angle of bending sloping reflecter.In the light source module 100j of present embodiment, the average slope angle θ of the bending sloping reflecter 243j of each bending groove 242j (for example bending groove 242aj, 242bj, 242cj) of each groove group 240j " be to spending less than or equal to 50 more than or equal to 30 degree.So the setting of average slope angle light beam 112b that light-emitting component 110b is sent is bent shape sloping reflecter 243j toward the upper right side reflection of Fig. 5, and after carrying the image of liquid crystal panel 50, be passed to user's right eye R, and the light beam 112a that light-emitting component 110a is sent is bent shape sloping reflecter 243j toward the upper left side reflection of Fig. 5, and is passed to user's left eye L behind the image that carries liquid crystal panel 50.Alternately carry left-eye images and right-eye image by light beam 112a and 112b, just can form stereopsis in user's the brain.In the present embodiment, bending sloping reflecter 243j is being straight line perpendicular to the transversal on the direction of first surface 210, yet can also be curve in other embodiments.
In sum, embodiments of the invention can have at least one of following advantages or effect.In the light guide plate and light source module of the present invention's embodiment, second surface is provided with the bending sloping reflecter, and the bending sloping reflecter can reflex to light the direction of expection.Therefore, the use amount of the blooming piece of the first surface of light guide plate top can reduce or not use blooming piece, so just can reduce light loss and Cost reduction.
The above, it only is preferred embodiment of the present invention, when the scope that can not limit with this invention process, the simple equivalence of namely generally being done according to the present patent application claim and invention description content changes and modifies, and all still belongs in the scope that patent of the present invention contains.Arbitrary embodiment of the present invention or claim must not reached whole purposes or advantage or the characteristics that the present invention discloses in addition.
Claims (16)
1. light guide plate comprises:
One first surface;
One second surface is with respect to this first surface;
At least one incidence surface connects this first surface and this second surface; And
Several groove groups, be located at dispersedly on this second surface, wherein each this groove group comprises several bending grooves, each this bending groove has one of be connected bending sloping reflecter and bending side backlight, this bending sloping reflecter tilts with respect to this first surface, those bending grooves in each this groove group are crooked toward same direction, this bending side backlight of another of the adjacent two bending grooves with this of this bending sloping reflecter of one of adjacent two these bending grooves is connected, those bending sloping reflecters of those bending grooves of each this groove group are not identical in fact with respect to the average slope angle of this first surface, after those bending sloping reflecters of those bending grooves of each this groove group were sorted out according to order from large to small with respect to the average slope angle of this first surface, the difference of adjacent wantonly two these average slope angles was less than or equal to 10 degree on size order.
2. light guide plate as claimed in claim 1 is characterized in that: the average slope angle of each this bending sloping reflecter for more than or equal to 30 degree to less than or equal to 60 degree.
3. light guide plate as claimed in claim 1, it is characterized in that: each this bending groove is an arcuation groove, and this bending sloping reflecter of this arcuation groove is between this bending side backlight and this incidence surface.
4. light guide plate as claimed in claim 1, it is characterized in that: each this bending groove is an annular recess.
5. light guide plate as claimed in claim 1 is characterized in that: this bending sloping reflecter of this bending groove is between a center of curvature of this bending side backlight of this bending groove and this bending groove.
6. light guide plate as claimed in claim 1 is characterized in that: this bending side backlight of this bending groove is between a center of curvature of this bending sloping reflecter of this bending groove and this bending groove.
7. light source module comprises:
One light guide plate comprises:
One first surface;
One second surface is with respect to this first surface;
At least one incidence surface connects this first surface and this second surface; And
Several groove groups, be located at dispersedly on this second surface, wherein each this groove group comprises several bending grooves, each this bending groove has one of be connected bending sloping reflecter and bending side backlight, this bending sloping reflecter tilts with respect to this first surface, those bending grooves in each this groove group are crooked toward same direction, this bending side backlight of another of the adjacent two bending grooves with this of this bending sloping reflecter of one of adjacent two these bending grooves is connected, those bending sloping reflecters of those bending grooves of each this groove group are not identical in fact with respect to the average slope angle of this first surface, and those bending sloping reflecters of those bending grooves of each this groove group are spent less than or equal to 10 with respect to the minimal difference between the average slope angle of this first surface; And
At least one light-emitting component, be disposed at by this incidence surface, and be suitable for sending a light beam, wherein this light beam is suitable for entering in this light guide plate via this incidence surface, and be suitable for being passed to outside this light guide plate via this first surface, this bending sloping reflecter be suitable for from this beam reflection of this incidence surface to this first surface.
8. light source module as claimed in claim 7 is characterized in that: the average slope angle of each this bending sloping reflecter for more than or equal to 30 degree to less than or equal to 60 degree.
9. light source module as claimed in claim 7, it is characterized in that: each this bending groove is an arcuation groove, and this bending sloping reflecter of this arcuation groove is between this bending side backlight and this incidence surface.
10. light source module as claimed in claim 7, it is characterized in that: each this bending groove is an annular recess.
11. light source module as claimed in claim 10, it is characterized in that: this at least one incidence surface is two relative incidence surfaces, this at least one light-emitting component is for being disposed at respectively the other two light emitting of this two incidence surface, this light source module more comprises a control module, be electrically connected to this two light emitting, to order about the alternately flicker of this two light emitting.
12. light source module as claimed in claim 11 is characterized in that: the average slope angle of each this bending sloping reflecter is for extremely spending less than or equal to 50 more than or equal to 30 degree.
13. light source module as claimed in claim 11 is characterized in that: the average slope angle of each this bending sloping reflecter is for extremely spending less than or equal to 60 more than or equal to 40 degree.
14. light source module as claimed in claim 7 is characterized in that: this bending sloping reflecter of this bending groove is between a center of curvature of this bending side backlight of this bending groove and this bending groove.
15. light source module as claimed in claim 7 is characterized in that: this bending side backlight of this bending groove is between a center of curvature of this bending sloping reflecter of this bending groove and this bending groove.
16. light source module as claimed in claim 7 is characterized in that: more comprise a reflector element, be disposed on this second surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010161864 CN102213398B (en) | 2010-04-08 | 2010-04-08 | Light guide plate and light source module |
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| CN 201010161864 CN102213398B (en) | 2010-04-08 | 2010-04-08 | Light guide plate and light source module |
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| CN102213398B true CN102213398B (en) | 2013-03-06 |
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| CN104375235B (en) * | 2014-11-26 | 2017-03-08 | 深圳市华星光电技术有限公司 | Light guide plate, backlight module and display |
| CN114263869B (en) * | 2021-12-29 | 2023-06-06 | 重庆长安汽车股份有限公司 | Automobile atmosphere lamp and vehicle |
Citations (4)
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|---|---|---|---|---|
| CN2862089Y (en) * | 2005-12-15 | 2007-01-24 | 比亚迪股份有限公司 | Light conducting board and back light module unit |
| CN1908764A (en) * | 2005-08-01 | 2007-02-07 | 欧姆龙株式会社 | Area light source device |
| CN101393298A (en) * | 2007-09-18 | 2009-03-25 | 中强光电股份有限公司 | Light conducting plate and backlight module |
| CN101634726A (en) * | 2008-07-21 | 2010-01-27 | 鸿富锦精密工业（深圳）有限公司 | Light panel and manufacturing method as well as backlight module adopting same |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1908764A (en) * | 2005-08-01 | 2007-02-07 | 欧姆龙株式会社 | Area light source device |
| CN2862089Y (en) * | 2005-12-15 | 2007-01-24 | 比亚迪股份有限公司 | Light conducting board and back light module unit |
| CN101393298A (en) * | 2007-09-18 | 2009-03-25 | 中强光电股份有限公司 | Light conducting plate and backlight module |
| CN101634726A (en) * | 2008-07-21 | 2010-01-27 | 鸿富锦精密工业（深圳）有限公司 | Light panel and manufacturing method as well as backlight module adopting same |
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| CN102213398A (en) | 2011-10-12 |
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