CN207301397U - Light guide plate, backlight module and display device - Google Patents
Light guide plate, backlight module and display device Download PDFInfo
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- CN207301397U CN207301397U CN201721390808.0U CN201721390808U CN207301397U CN 207301397 U CN207301397 U CN 207301397U CN 201721390808 U CN201721390808 U CN 201721390808U CN 207301397 U CN207301397 U CN 207301397U
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Abstract
It the utility model is related to light guide plate, backlight module and display device.Light guide plate includes main body and multiple prism portions.Main body has mutually perpendicular first extending direction and the second extending direction.Main body includes incidence surface and optical surface.Incidence surface extends along the first extending direction.Optical surface connects incidence surface, and with close to the second side of the first side of incidence surface and remote incidence surface.Extending direction of second extending direction parallel to the first side towards the second side.Optical surface has first area, second area and the 3rd region being arranged in order along the second extending direction.Prism portion is arranged on optical surface, and is extended along the second extending direction.Prism portion is located at the part occupied area in first area than the part occupied area ratio that is located at more than prism portion in second area, and is located at the part occupied area ratio in the 3rd region less than prism portion.
Description
Technical field
A kind of leaded light component and its application are the utility model is related to, and more particularly to light guide plate and the light guide plate is in backlight mould
Application in group and display device.
Background technology
Light guide plate has incidence surface, light-emitting surface and reflecting surface.The light that light source is provided from the incidence surface of light guide plate into
Enter in light guide plate, and projected from the light-emitting surface of light guide plate.In order to enable can more uniformly it be mixed by the light source inside light guide plate
Close, it will usually micro-structure is set in the light-emitting surface or reflecting surface of light guide plate, but general micro-structure is with sparse in incident side
And towards the gradual intensive linear distribution trend of anti-incident side, the linear distribution trend easily incident side produce bright dark line so as to
Influence the optical appearance of light guide plate.Therefore, there is an urgent need for a kind of light guide plate, to solve the above problems.
Utility model content
Therefore, the purpose of this utility model is to provide light guide plate, backlight module and display device, wherein, the light guide plate
Design with prism, it can control the amount of light of light guide plate everywhere respectively, so make backlight module and display device produce compared with
High degree and appearance taste together.
A kind of above-mentioned purpose according to the present utility model, it is proposed that light guide plate.The light guide plate includes main body and multiple ribs
Mirror portion.Main body has mutually perpendicular first extending direction and the second extending direction.Main body includes incidence surface and optical surface.
Incidence surface extends along the first extending direction.Optical surface connects incidence surface, wherein, optical surface has close to the first side of incidence surface
And the second side away from incidence surface.Extending direction of second extending direction parallel to the first side towards the second side.Moreover, optics
Face has first area, second area and the 3rd region being arranged in order along the second extending direction.Prism portion is arranged on light
On face, and each prism portion extends along the second extending direction, wherein, prism portion is located at shared by the part in first area
Area is located at less than prism portion the portion in the 3rd region than the part occupied area ratio that is located at more than prism portion in second area
Divide occupied area ratio.
Embodiment according to the present utility model, each prism portion have the first width positioned at first area, positioned at the
Second width and the 3rd width positioned at the 3rd region in two regions.Moreover, the first width is more than the second width, and first
Width is less than the 3rd width.
Embodiment according to the present utility model, each prism portion are arranged by multiple prism structures along the second extending direction
Formed, wherein, each prism structure in first area has the first width, each rib in second area
Mirror structure has the second width, and each prism structure in the 3rd region has the 3rd width.Wherein, the first width
More than the second width, and the first width is less than the 3rd width.
Embodiment according to the present utility model, each prism portion are arranged by multiple prism structures along the second extending direction
Formed.Wherein, the dense arrangement degree of the prism structure in first area is more than the prism structure in second area
Dense arrangement degree, but less than the dense arrangement degree for the prism structure being located in the 3rd region.
Embodiment according to the present utility model, each prism portion are arranged by multiple prism structures along the second extending direction
Formed.Wherein, in first area along between the adjacent prism structure of any two of the second extending direction have first
Spacing, along having the second spacing between the adjacent prism structure of any two of the second extending direction in second area,
Along having the 3rd spacing between the adjacent prism structure of any two of the second extending direction in the 3rd region.Between second
Away from more than the first spacing, and the first spacing is more than the 3rd spacing.
Embodiment according to the present utility model, each prism portion are arranged by multiple prism structures along the second extending direction
Formed, each prism structure interconnects.
Embodiment according to the present utility model, light guide plate further include multiple light-mixing structures.Light-mixing structure is arranged on optical surface
On, and light-mixing structure is between the first side and first area.
Embodiment according to the present utility model, each prism portion are arranged by multiple prism structures along the second extending direction
Formed.Each prism structure includes the first optical surface and the second optical surface.First optical surface is tilted with respect to incidence surface, and first
First inclination angle of the optical surface profile at the top of being extended to from bottom.Second optical surface with respect to incidence surface tilt, the second optical surface profile into
Second inclination angle at top is extended to from bottom.Wherein, the first inclination angle is less than the second inclination angle, and the first optical surface is close to entering light
Face, the second optical surface is away from the incidence surface.
Embodiment according to the present utility model, the first optical surface of each prism structure and the mutually interconnection of the second optical surface
Connect and form crestal line, and crestal line is substantially parallel to the first side.
A kind of above-mentioned purpose according to the present utility model, it is also proposed that backlight module.Backlight module include foregoing light guide plate with
And light source.Light source is adjacent to the incidence surface of light guide plate.
A kind of above-mentioned purpose according to the present utility model, it is also proposed that display device.Display device includes backlight module
And display panel.Display panel is arranged on the front of light guide plate.
It can be seen from the above, the light guide plate of the utility model has multiple prism portions, and each component prism is not close
Area shared by light guide plate incidence surface, remote light guide plate incidence surface (anti-incidence surface) and the centre of light guide plate is different, therefore can divide
Amount of light that Kong Zhi be at light guide plate diverse location, and then the light extraction that can lift overall light guide plate is spent together.
Brief description of the drawings
In order to more completely understand embodiment and its advantage, description below is made referring now to attached drawing, wherein：
Figure 1A shows the schematic device of the backlight module of first embodiment according to the present utility model；
Figure 1B shows that the prism portion of first embodiment according to the present utility model is different on the optical surface of light guide plate
At position occupied area than change curve；
Fig. 2A shows the partial schematic diagram of the backlight module of first embodiment according to the present utility model；
Fig. 2 B show the profile along the A-A hatchings institute cutting of Fig. 2A；
Fig. 3 shows the partial schematic diagram of the backlight module of second embodiment according to the present utility model；
Fig. 4 A show the partial schematic diagram of the backlight module of the 3rd embodiment according to the present utility model；
Fig. 4 B show the profile along the B-B hatchings institute cutting of Fig. 4 A；
Fig. 5 shows the partial schematic diagram of the backlight module of the 4th embodiment according to the present utility model；
Fig. 6 shows the partial schematic diagram of the backlight module of the 5th embodiment according to the present utility model；And
Fig. 7 shows the schematic device of the display device of embodiment according to the present utility model.
Embodiment
Figure 1A is refer to, it illustrates the device signal of the backlight module of first embodiment according to the present utility model
Figure.The backlight module 100 of present embodiment mainly includes light guide plate 200 and light source 300.Light guide plate 200 include main body 210 with
And multiple prism portions 220.These prism portions 220 are arranged in main body 210.By setting prism portion 220, light guide plate can adjust
200 optics trend, and the uniformity of the light extraction appearance of light guide plate 200 can be lifted.
Figure 1A is continued referring to, in light guide plate 200, main body 210 can be light-transmitting plate or other equivalent transmission elements.At this
In embodiment, main body 210 has the first extending direction D1 and the second extending direction D2, and the first extending direction D1 vertical second
Extending direction D2.In addition, main body 210 mainly includes incidence surface 211 and optical surface 212.Wherein, incidence surface 211 along first
Extending direction D1 extends.Optical surface 212 connects incidence surface 211.In the present embodiment, optical surface 212 is light-emitting surface.In other realities
Apply in example, optical surface 212 also can be reflecting surface.Light source 300 is arranged on by incidence surface 211, and light caused by light source 300 can
Enter light guide plate 200 from incidence surface 211.
In one embodiment, optical surface 212 has opposite the first side 212a and the second side 212b, wherein, the first side
The closer incidence surfaces 211 of 212a, the second side 212b is further away from incidence surface 211.Wherein, the second extending direction D2 is parallel to the first side
Extending directions of the 212a towards the second side 212b.In one embodiment, optical surface 212 have along the second extending direction D2 according to
First area A1, second area A2 and the 3rd region A3 of secondary arrangement.It is to be understood that the dashed rectangle shown in Figure 1A is only used for showing
First area A1, second area A2 and the 3rd region A3 for the utility model meaning of anticipating, the dashed rectangle in itself and are not belonging to
The structure of the light guide plate 200 of the utility model.
Figure 1A is continued referring to, prism portion 220 is arranged on optical surface 212.In the present embodiment, each prism portion
220 extend along the second extending direction D2, and cross over first area A1, second area A2 and the 3rd region A3 at the same time.Please be same
When with reference to Figure 1B, it illustrates first embodiment according to the present utility model prism portion on the optical surface of light guide plate it is different
At position occupied area than change curve.Wherein, the 0mm of the longitudinal axis represents the position that optical surface 212 is connected with incidence surface 211
Put, and bigger to represent positional distance incidence surface 211 more remote for the numerical value of the longitudinal axis.As illustrated in figures 1A and ib, prism portion 220 is positioned at the
Part occupied area in one region A1 is and small than the part occupied area ratio that is located at more than prism portion 220 in second area A2
It is located at the part occupied area ratio in the 3rd region A3 in prism portion 220.Thereby, when light caused by light source 300 is from entering light
After face 211 enters light guide plate 200, it is located at the part in the A1 of first area by prism portion 220 respectively, prism portion 220 is located at second
The amount of light that the part that part and prism portion 220 in the A2 of region are located at the 3rd region A3 is projected is different, therefore can make overall light
The emitting brightness in face 212 is more homogeneous.
In one embodiment, each prism portion 220 has the first width W1, the second width W2 and the 3rd width W3.
Part of the prism portion 220 with the first width W1 is located in the A1 of first area, part position of the prism portion 220 with the second width W2
In second area A2, part of the prism portion 220 with the 3rd width W3 is located in the 3rd region A3.Wherein, the first width W1
More than the second width W2, and the first width W1 is less than the 3rd width W3, and prism portion 220 can thereby be located in the A1 of first area
Part occupied area is less than 220, prism portion than the part occupied area ratio that is located at more than prism portion 220 in second area A2
Part occupied area ratio in the 3rd region A3.It is to be understood that signified the first width W1, the second width W2 and the 3rd is wide herein
It is the maximum width that prism portion 220 is located at first area A1, second area A2 and the part in the 3rd region A3 respectively to spend W3.
Figure 1A is continued referring to, in the present embodiment, each prism portion 220 is by multiple prism structures (such as prism knot
Structure 221, prism structure 222 and prism structure 223) it is arranged in order to be formed along the second extending direction D2.Wherein, prism structure
221 are located in the A1 of first area, and prism structure 222 is located in second area A2, and prism structure 223 is located in the 3rd region A3.
Referring to Fig. 2A and Fig. 2 B, wherein, Fig. 2A shows first embodiment according to the present utility model, backlight module
Partial schematic diagram, Fig. 2 B show the profile along the A-A hatchings institute cutting of Fig. 2A.In the present embodiment, prism structure
221st, prism structure 222 is interconnected with prism structure 223 along the second extending direction D2.In the present embodiment, prism structure
221st, prism structure 222 and prism structure 223 are projective structure, and with identical length L1 and height H1.Moreover, prism
Structure 221, prism structure 222 and the structure of prism structure 223 are substantially the same, and difference is only that the first of prism structure 221
The 3rd width W3 ' of width W1 ', the second width W2 ' of prism structure 222 and prism structure 223 are different from each other.Therefore, rib
Mirror structure 221, prism structure 222 and the size of prism structure 223 are different from each other.
Fig. 2A and Fig. 2 B are continued referring to, in the present embodiment, the first width W1 ' is more than the second width W2 ', and first is wide
Degree W1 ' is less than the 3rd width W3 ', and the part occupied area ratio that prism structure 221 is located in the A1 of first area can thereby be more than
Prism structure 222 is located at the part occupied area ratio in second area A2, and is located at less than prism structure 223 in the 3rd region A3
Part occupied area ratio.Therefore, after light caused by light source 300 enters light guide plate 200 from incidence surface 211, from close
The amount of light that the prism structure 221 of incidence surface 211 projects can be obviously improved, to solve easily to produce in incident side in the prior art
The problem of raw bright dark line, therefore the emitting brightness of the optical surface 212 of light guide plate 200 can be made more homogeneous.
In an illustrative example, prism structure 222 includes the first optical surface 222a and the second optical surface 222b.Its
In, the closer incidence surfaces 211 of the first optical surface 222a, the second optical surface 222b is further away from incidence surface 211.First optical surface 222a
Optical surface 212 is connected, and opposite incidence surface 211 tilts, and is consequently formed the first inclination alpha.It is to be understood that the first optical surface 222a is the bottom of from
Portion extends to top, and the first inclination alpha is for the first optical surface 222a and by between the horizontal plane of the first optical surface 222a bottoms
Angle, wherein, the horizontal plane and optical surface 212 are same plane.
Second optical surface 222b connections optical surface 212 and the first optical surface 222a.Second optical surface 222b is with respect to incidence surface
211 tilt, and are consequently formed the second angle of inclination beta.It is to be understood that the second optical surface 222b extends to top from bottom, and the second angle of inclination beta is
Angle between second optical surface 222b and the horizontal plane for passing through the second optical surface 222b bottoms, wherein, the horizontal plane and optics
Face 212 is same plane.Wherein, it is crestal line 222c that the first optical surface 222a and the second optical surface 222b, which is connected with each other part, and
First side 212as of the crestal line 222c substantially parallel to optical surface 212.In certain embodiments, as shown in Figure 2 B, first inclines
Angle α is less than the second angle of inclination beta, and the first inclination alpha, towards incidence surface 211, the second angle of inclination beta is backwards to incidence surface 211.In the present embodiment
In, the first optical surface 222a and the second optical surface 222b are mainly used to change light from the direction that prism structure 222 projects.Ying Li
Solution, prism structure 221 and the structure and the structure of prism structure 222 of prism structure 223 are substantially the same, and include entering light relatively
Inclined first optical surface in face 211 and the second optical surface, to achieve the purpose that to change light directive property, therefore details are not described herein.
In other embodiments, light guide plate can also have other different structure designs.Fig. 3 is refer to, it illustrates basis
The partial schematic diagram of the backlight module of the second embodiment of the utility model.In the present embodiment, the structure of light guide plate 400 with
The light guide plate 200 of first embodiment is substantially the same, and difference is that there is different structures to set in the prism portion 420 of light guide plate 400
Meter.In the present embodiment, each prism portion 420 by multiple prism structures (such as prism structure 421, prism structure 422 and
Prism structure 423) it is arranged in order to be formed along the second extending direction D2.Wherein, prism structure 421 is located in the A1 of first area,
Prism structure 422 is located in second area A2, and prism structure 423 is located in the 3rd region A3.
As shown in figure 3, in one embodiment, the structure of prism structure 421, prism structure 422 and prism structure 423
Size and shape is substantially the same.Moreover, the dense arrangement degree of the prism structure 421 of A1 is more than positioned at the in first area
The dense arrangement degree of prism structure 422 in two region A2, but less than the arrangement for the prism structure 423 being located in the 3rd region A3
Closeness, can thereby make the part occupied area ratio that prism portion 420 is located in the A1 of first area be more than prism portion 420 and be located at second
Part occupied area ratio in the A2 of region, and it is less than the part occupied area ratio that prism portion 420 is located in the 3rd region A3.Cause
This, after light caused by light source 300 enters light guide plate 400 from incidence surface 211, from the prism structure close to incidence surface 211
421 amount of lights projected can be obviously improved, to solve the problems, such as easily to produce bright dark line in incident side in the prior art, therefore
The emitting brightness of the optical surface 212 of light guide plate 400 can be made more homogeneous.
It is to be understood that the structure design of the prism structure 421 of present embodiment, prism structure 422 and prism structure 423 with
The structure design of prism structure 222 as shown in Figure 2 A and 2 B is substantially the same, therefore details are not described herein.On the other hand, originally
The prism structure 421 of embodiment, prism structure 422 and prism structure 423 are dimensioned to identical to be only used for demonstration and say
It is bright.In other embodiments, the size of prism structure 421, prism structure 422 and prism structure 423 also may be designed to difference.
For example, the width of prism structure 421 can be more than the width of prism structure 422 and less than the width of prism structure 423, use
Change the part occupied area ratio that prism portion 420 is located in first area A1, second area A2 and the 3rd region A3 respectively, into
And control amount of light of the light respectively from the first area A1 of light guide plate 400, second area A2 and the 3rd region A3.
Referring to Fig. 4 A and Fig. 4 B, wherein, Fig. 4 A show the back of the body of the 3rd embodiment according to the present utility model
The partial schematic diagram of optical mode group, Fig. 4 B show the profile along the B-B hatchings institute cutting of Fig. 4 A.In the present embodiment,
The structure of light guide plate 500 and the light guide plate 200 of first embodiment are substantially the same, and difference is the prism portion 520 of light guide plate 500
With different structure designs.In the present embodiment, each prism portion 520 is by multiple prism structures (such as prism structure
521st, prism structure 522 and prism structure 523) it is arranged in order to be formed along the second extending direction D2.Wherein, prism structure
521 are located in the A1 of first area, and prism structure 522 is located in second area A2, and prism structure 523 is located in the 3rd region A3.
As shown in fig. 4 a and fig. 4b, in one embodiment, prism structure 521, prism structure 522 and prism structure
523 structure size and shape are substantially the same.Wherein, along any the two of the second extending direction D2 in the A1 of first area
There is the first interval S 1, the appointing along the second extending direction D2 in second area A2 between a adjacent prism structure 521
There is the second interval S 2 between two adjacent prism structures 522 of meaning, and along the second extension side in the 3rd region A3
There is the 3rd interval S 3 between the prism structure 523 adjacent to any two of D2.Wherein, the second interval S 2 is more than the first spacing
S1, and the first interval S 1 is more than the 3rd interval S 3, the part occupied area that prism portion 520 can thereby be located in the A1 of first area
It is located at the 3rd region A3 than the part occupied area ratio being located at more than prism portion 520 in second area A2, and less than prism portion 520
In part occupied area ratio.Therefore, when light caused by light source 300 from incidence surface 211 enter light guide plate 500 after, from by
The amount of light that the prism structure 521 of nearly incidence surface 211 projects can be obviously improved, to solve in the prior art easily in incident side
The problem of producing bright dark line, can make the emitting brightness of the optical surface 212 of light guide plate 500 more homogeneous.
It is to be understood that the structure design of the prism structure 521 of present embodiment, prism structure 522 and prism structure 523 with
The structure design of prism structure 222 as shown in Figure 2 A and 2 B is substantially the same, therefore details are not described herein.On the other hand, originally
The prism structure 521 of embodiment, prism structure 522 and prism structure 523 are dimensioned to identical to be only used for demonstration and say
It is bright.In other embodiments, the size of prism structure 521, prism structure 522 and prism structure 523 also may be designed to difference.
For example, the width of prism structure 521 can be more than the width of prism structure 522 and less than the width of prism structure 523, use
Change the part occupied area ratio that prism portion 520 is located at first area A1, second area A2 and the 3rd region A3 respectively.At it
In his embodiment, it can also change the dense arrangement degree of the prism structure 521 of A1 in first area, the rib in second area A2
The dense arrangement degree of mirror structure 522 and the dense arrangement degree of the prism structure 523 in the 3rd region A3, so as to change
Become the part occupied area ratio that prism portion 520 is located in first area A1, second area A2 and the 3rd region A3 respectively.
Fig. 5 is refer to, it illustrates the partial schematic diagram of the backlight module of the 4th embodiment according to the present utility model.
In the present embodiment, the light guide plate 200 of the structure of light guide plate 600 and first embodiment is substantially the same, and difference is light guide plate
600 further include light-mixing structure 601.As shown in figure 5, light-mixing structure 601 is arranged on optical surface 212, and positioned at incidence surface 211 with
And between the A1 of first area.In the present embodiment, light-mixing structure 601 is list structure, and the list structure can be from optical surface
The convex shaped part of 212 protrusions or the concave part of recessed optical surface 212.Moreover, light-mixing structure 601 prolongs along the second extending direction D2
Stretch.Thereby, the light emitted by light source 300 can first pass through light-mixing structure 601 and form uniform light after light guide plate 600 is entered
Line, and then the obvious bright secretly non-uniform problem of appearance caused by line that known light guide plate occurs in incident side can be improved.
It is to be understood that the light-mixing structure 601 of the light guide plate 600 of the embodiment of Fig. 5 is arranged in pairs or groups, prism portion 220 is only said as demonstration
It is bright.In other embodiments, the light-mixing structure 601 of light guide plate 600 also can arrange in pairs or groups as shown in Figure 3 prism portion 420 or such as Fig. 4 institutes
The prism portion 520 shown, to produce identical effect.
It is to be understood that foregoing prism structure is only used for demonstration explanation for convex architecture.In other embodiments, prism structure
Also can be concave architecture.Fig. 6 is refer to, it illustrates the part of the backlight module of the 5th embodiment according to the present utility model
Schematic diagram.In the present embodiment, the light guide plate 200 of the structure of light guide plate 700 and first embodiment is substantially the same, and difference is
The prism structure 721,722 and 723 of light guide plate 700 has different structure designs.In the present embodiment, prism structure 721,
722 and 723 be sunk structure.In an illustrative example, prism structure 722 includes the first optical surface 722a and the second optics
Face 722b.Wherein, the closer incidence surfaces 211 of the first optical surface 722a, the second optical surface 722b is further away from incidence surface 211.First
Optical surface 722a is tilted with respect to incidence surface 211, is consequently formed the first inclination alpha that top is extended to from bottom '.Second optical surface
722b is tilted with respect to incidence surface 211, is consequently formed the second angle of inclination beta that top is extended to from bottom '.In certain embodiments,
One inclination alpha ' it is less than the second angle of inclination beta '.In the present embodiment, the first optical surface 722a and the second optical surface 722b mainly can be used to
Change light from the direction that prism structure 722 projects.It is to be understood that the structure of prism structure 721 and prism structure 723 and prism knot
The structure of structure 722 is substantially the same, and includes opposite inclined first optical surface of incidence surface 211 and the second optical surface, to reach
Change the purpose of light directive property, therefore details are not described herein.
Referring to Fig. 2 B and Fig. 6, since the prism structure 221,222 and 223 of the embodiment shown in Fig. 2 B is convex
Portion, therefore after most of light of the injection of light source 300 is from incidence surface 211 into light guide plate 200, the second optical surface of meeting directive (such as
Second optical surface 222b).That is, the second optical surface of prism structure 221,222 and 223 is direct smooth surface.Therefore, it is
Achieve the purpose that to guide light, in certain embodiments, the area of the second optical surface of prism structure 221,222 and 223 can
More than the area of the first optical surface, to lift the uniformity of the light extraction efficiency of light guide plate 200 and appearance.On the other hand, due to
The prism structure 721,722 and 723 of embodiment shown in Fig. 6 is concave part, therefore most of light that light source 300 projects is from entering light
Face 211 can the first optical surface of directive (such as first optical surface 722a) after entering light guide plate 700.That is, prism structure
721st, 722 and 723 the first optical surface is direct smooth surface.Therefore, in structure design, prism structure 721,722 and 723
The area of first optical surface can be more than the area of the second optical surface, to lift the equal of the light extraction efficiency of light guide plate 700 and appearance
Even property.
Fig. 7 is refer to, it illustrates the schematic device of the display device of embodiment according to the present utility model.This reality
Applying the display device 800 of mode includes backlight module 100 and display panel 810 as shown in Figure 2 A and 2 B.Such as Fig. 7 institutes
Showing, display panel 810 is arranged on the front of light guide plate 200 of backlight module 100, can reach purpose as hereinbefore, therefore herein
Repeat no more.It is to be understood that embodiments herein should with the backlight module 100 with light guide plate 200 shown in Fig. 2A and Fig. 2 B
For being only used for demonstration explanation in display device 800, and it is not used to limitation the utility model.The leaded light of foregoing other embodiment
Plate, such as light guide plate 400,500,600 and 700 are equally applicable in display device, to produce same effect.
From above-mentioned the utility model embodiment, the light guide plate of the utility model has multiple prism portions, and each
A component prism is not close to shared by light guide plate incidence surface, remote light guide plate incidence surface (anti-incidence surface) and the centre of light guide plate
Area it is different, therefore the amount of light at light guide plate diverse location can be controlled respectively, and then the light extraction that can lift overall light guide plate is equal
Once.
Although the utility model is as above disclosed by embodiment, so it is not limited to the utility model,
Any those skilled in the art, without departing from the spirit and scope of the utility model, be able to should make it is a little change and retouch,
Therefore the scope of protection of the utility model should be subject to the scope of which is defined in the appended claims.
【Symbol description】
100 backlight modules
200 light guide plates
210 main bodys
211 incidence surfaces
212 optical surfaces
The first sides of 212a
The second sides of 212b
220 prism portions
221 prism structures
222 prism structures
The first optical surfaces of 222a
The second optical surfaces of 222b
222c crestal lines
223 prism structures
300 light sources
400 light guide plates
420 prism portions
421 prism structures
422 prism structures
423 prism structures
500 light guide plates
520 prism portions
521 prism structures
522 prism structures
523 prism structures
600 light guide plates
601 light-mixing structures
700 light guide plates
721 prism structures
722 prism structures
The first optical surfaces of 722a
The second optical surfaces of 722b
723 prism structures
800 display devices
810 display panels
A1 first areas
A2 second areas
The 3rd regions of A3
The first extending directions of D1
The second extending directions of D2
H1 height
L1 length
The first width of W1
The first width of W1 '
The second width of W2
The second width of W2 '
The 3rd width of W3
The 3rd width of W3 '
The first spacing of S1
The second spacing of S2
The 3rd spacing of S3
The first inclination angles of α
The first inclination angles of α '
The second inclination angles of β
The second inclination angles of β '
Claims (11)
1. a kind of light guide plate, including：
Main body, its with mutually perpendicular first extending direction and the second extending direction, wherein, the main body includes：
Incidence surface, it extends along first extending direction；And
Optical surface, it connects described incidence surface, wherein, the optical surface has close to the first side of the incidence surface and remote
Second side of the incidence surface, wherein, extension of second extending direction parallel to first side towards second side
Direction, and the optical surface has the first area being arranged in order along second extending direction, second area and the 3rd
Region；And
Multiple prism portions, it is arranged on the optical surface, and each described prism portion prolongs along second extending direction
Stretch, wherein, the prism portion is located at part occupied area ratio in the first area and is more than the prism portion positioned at described the
Part occupied area ratio in two regions, and it is less than the part occupied area ratio that the prism portion is located in the 3rd region.
2. light guide plate according to claim 1, wherein, each described prism portion has the positioned at the first area
One width, the second width positioned at the second area and the 3rd width positioned at the 3rd region, and it is described first wide
Degree is more than second width, and first width is less than the 3rd width.
3. light guide plate according to claim 1, wherein, each described prism portion is by multiple prism structures along described
Two extending direction arrangement forms, wherein, each described prism structure in the first area has the first width, position
Each described prism structure in the second area has the second width, and each in the 3rd region
The prism structure has the 3rd width, wherein, first width is more than second width, and first width is less than
3rd width.
4. light guide plate according to claim 1, wherein, each described prism portion is by multiple prism structures along described
Two extending direction arrangement forms, wherein, the dense arrangement degree of the prism structure in the first area, which is more than, to be located at
The dense arrangement degree of the prism structure in the second area, but less than the prism knot being located in the 3rd region
The dense arrangement degree of structure.
5. light guide plate according to claim 1, wherein, each described prism portion is by multiple prism structures along described
Two extending direction arrangement forms, wherein, it is adjacent along any two of second extending direction in the first area
Prism structure between there is the first spacing, along any two phase of second extending direction in the second area
There is the second spacing between adjacent prism structure, along any two of second extending direction in the 3rd region
There is the 3rd spacing between adjacent prism structure, wherein, second spacing is more than first spacing, and between described first
Away from more than the 3rd spacing.
6. light guide plate according to claim 1, wherein, each described prism portion is by multiple prism structures along described
Two extending direction arrangement forms, each described prism structure interconnect.
7. light guide plate according to claim 1, further includes multiple light-mixing structures, it is arranged on the optical surface, and institute
Light-mixing structure is stated between first side and the first area.
8. light guide plate according to claim 1, wherein, each described prism portion is by multiple prism structures along described
Two extending direction arrangement forms, and each described prism structure includes：
First optical surface, its relatively described incidence surface tilt, and first optical surface profile extends to the first of top into from bottom
Inclination angle；And
Second optical surface, its relatively described incidence surface tilt, and second optical surface profile extends to the second of top into from bottom
Inclination angle, wherein, first inclination angle is less than second inclination angle, and first optical surface is close to the incidence surface, and described
Two optical surfaces are away from the incidence surface.
9. light guide plate according to claim 8, wherein, first optical surface of each prism structure with it is described
Second optical surface has been interconnected to form crestal line, and the crestal line is parallel to first side.
10. a kind of backlight module, including：
Light guide plate according to any one of claim 1 to 9；And
Light source, it is adjacent to the incidence surface.
11. a kind of display device, including：
Backlight module according to claim 10；And
Display panel, it is arranged in front of the light guide plate.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201721390808.0U CN207301397U (en) | 2017-10-26 | 2017-10-26 | Light guide plate, backlight module and display device |
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| CN201721390808.0U CN207301397U (en) | 2017-10-26 | 2017-10-26 | Light guide plate, backlight module and display device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019080027A1 (en) * | 2017-10-26 | 2019-05-02 | 瑞仪(广州)光电子器件有限公司 | Light guide plate, backlight module and display device |
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2017
- 2017-10-26 CN CN201721390808.0U patent/CN207301397U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019080027A1 (en) * | 2017-10-26 | 2019-05-02 | 瑞仪(广州)光电子器件有限公司 | Light guide plate, backlight module and display device |
| KR20200091393A (en) * | 2017-10-26 | 2020-07-30 | 라디안트 (광저우) 옵토-엘렉트로닉스 컴퍼니 리미티드 | Light guide plate, backlight module and display device |
| US10816715B2 (en) | 2017-10-26 | 2020-10-27 | Radiant (Guangzhou) Opto-Electronics Co., Ltd. | Light guide plate, backlight module and display device |
| KR102460679B1 (en) | 2017-10-26 | 2022-10-28 | 라디안트 (광저우) 옵토-엘렉트로닉스 컴퍼니 리미티드 | Light guide plate, backlight module and display device |
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