CN104501045B - Laterally-incoming-type backlight module and light guide plate thereof - Google Patents
Laterally-incoming-type backlight module and light guide plate thereof Download PDFInfo
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- CN104501045B CN104501045B CN201410811966.3A CN201410811966A CN104501045B CN 104501045 B CN104501045 B CN 104501045B CN 201410811966 A CN201410811966 A CN 201410811966A CN 104501045 B CN104501045 B CN 104501045B
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- structured pattern
- micro structured
- guide plate
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S8/00—Lighting devices intended for fixed installation
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
- G02B6/0015—Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0033—Means for improving the coupling-out of light from the light guide
- G02B6/0035—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Planar Illumination Modules (AREA)
Abstract
The invention discloses a laterally-incoming-type backlight module and a light guide plate thereof. The laterally-incoming-type backlight module comprises the light guide plate and a light source, the light source comprises a baseplate and a plurality of point light sources, the point light sources are linearly arranged on the baseplate and are opposite to a light incoming side face at surface intervals, the light guide plate comprises a light transmitting plate body, a first microstructure pattern and multiple second microstructure patterns, the light transmitting plate body comprises the light incoming side face, a face light source area and a transition area, the transition area is positioned between the face light source area and the light incoming side face, the first microstructure pattern is distributed in the face light source area, and the second microstructure patterns are projectile-shaped, positioned in the transition area and staggered with the point light sources arranged in the light incoming side face of the light transmitting plate body at intervals. When the point light sources emit light, each second microstructure pattern forms a pseudo light source between any two point light sources so as to fade optical spots.
Description
Technical field
The present invention relates to a kind of light guide plate, and particularly to a kind of light guide plate of side entrance back module.
Background technology
Demand with modern trend and restriction, many luminous product are towards short and small frivolous external form development so that lighting
Backlight module in product is also increasingly towards slimming and reduces the thickness of light guide plate.The light guide plate of backlight module comprises light
The face reflecting surface parallel with exiting surface several light incident sides vertical with exiting surface.The light source of backlight module comprises multiple
Optical diode.Light emitting diode is spaced in wherein one incidence surface, and the light of light emitting diode enters light guide plate from incidence surface,
And after being subject to the guiding of light guide plate, and it is distributed evenly in exiting surface, become the area source of backlight module.
However, because these spaced light emitting diodes have a predetermined light angle of divergence, and adjacent luminous two
There is gap, therefore, after light emitting diode transmitting light enters light guide plate, the exiting surface of light guide plate enters adjacent to it between pole pipe
Optics bright spot (the hot that the easy generation in relevant position at bright finish and corresponding each light emitting diode and each gap is substantially spaced
Spot) and dark space, lead to the optical effect of the area source of backlight module not good enough, and the fall of overall light utilization ratio and the uniformity
Low.
Common settling mode be luminous product correspondence position setting shading housing so that shading housing covers these
Optics bright spot and dark space.However, shading housing cannot comprehensively cover these optics bright spots and dark space, consumer still may send out
When light product is slightly made to tilt, see these optics bright spots and dark space from the side of shading housing.
As can be seen here, above-mentioned light guide plate still suffers from inconvenience and defect, and needs to be improved further.Therefore, how
Efficiently solve above-mentioned inconvenience and defect, real genus currently one of important research and development problem, also become currently associated field and need improvement badly
Target.
Content of the invention
The technical problem to be solved in the present invention is the light in order to overcome area source in traditional backlight module in prior art
Learn less effective, and the defect of overall light utilization ratio and the reduction of the uniformity, provide a kind of side entrance back module and its
Light guide plate.
The present invention is to solve above-mentioned technical problem by following technical proposals：
A kind of side entrance back module, its feature is, comprises：
One light guide plate, comprises：
One printing opacity plate body, comprises the exiting surface that light incident sides adjoin this light incident sides with, and this exiting surface is divided into one side
Source region and one is around this area source region around area；
One first micro structured pattern, is distributed in this area source region；And
Multiple second micro structured pattern, in this cincture area, and along this light incident sides linear arrangement；
And
One light source, comprises：
One substrate；And
Plurality of points light source, linear arrangement is on this substrate, and compartment of terrain is in the face of this light incident sides, any two of which phase
Between those adjacent point sources, definition has an interval region, and those second micro structured pattern each align those interval regions its
In one；
The external form of those the second micro structured pattern of each of which is to cut open shell type dril partly, this shell by an ellipse along its short axle
Shape has a straight line and a camber line, and two ends of this camber line connect two ends of this straight line respectively to form two relative ends respectively
End intersection point, a convex arc summit relatively those end intersection points of this camber line are closer to this first micro structured pattern, and the length of this straight line
The distance between those point sources adjacent equal to any two.
It is preferred that those point sources each have the envelope of one 50% light intensity, those adjacent light of any two
Those envelopes in source have a smooth joining, and this light joining just passes through this convex arc summit of this shell type dril.
It is preferred that those point sources each have the envelope of one 50% light intensity, those adjacent light of any two
Those envelopes in source have a smooth joining, and this light joining just passes through a focus of this ellipse, and wherein this focus is located at and is somebody's turn to do
In shell type dril.
Present invention also offers a kind of light guide plate, its feature is, comprises：
One printing opacity plate body, comprises the exiting surface that light incident sides adjoin this light incident sides with, and this exiting surface is divided into one side
Source region and one is around this area source region around area；
One first micro structured pattern, is distributed in this area source region；And
A plurality of second micro structured pattern, in this cincture area, and along this light incident sides linear arrangement；
The external form of those the second micro structured pattern of each of which is to cut open shell type dril partly, this shell by an ellipse along its short axle
Shape has a straight line and a camber line, and two ends of this camber line connect two ends of this straight line respectively to form two relative ends respectively
End intersection point, a convex arc summit relatively those end intersection points of this camber line are closer to this first micro structured pattern, and the length of this straight line
Length equal to this oval short axle.
It is preferred that a width in this cincture area is equal to the half of a long axis length of this ellipse.
Present invention also offers a kind of light guide plate, receive a plurality of spaced point sources with light incident sides, and then
Constitute a side entrance back module, its feature is, this light guide plate includes：
One printing opacity plate body, including a face source region and a transitional region, this transitional region is in long and narrow, and is located at this face
Between source region and this light incident sides；
One first micro structured pattern, is distributed in this area source region；And
A plurality of second micro structured pattern, those second micro structured pattern each cut open half in by an ellipse along its short axle
Shell type dril, in this transitional region and interwoven with those point sources spaced；
Wherein, when those point light source light-emittings spaced, those second micro structured pattern are spaced row in any two
Form pseudo- light source between those point sources of row, and then desalinate optics bright spot.
It is preferred that those point sources of each of which have the envelope of one 50% light intensity, adjacent those of any two
Those envelopes of point source have a smooth joining, and this light joining just passes through the convex arc summit of this adjacent shell type dril.
It is preferred that those point sources of each of which have the envelope of one 50% light intensity, adjacent those of any two
Those envelopes of point source have a smooth joining, and this light joining just passes through a focus of this ellipse, wherein this focus position
In this shell type dril.
On the basis of meeting common sense in the field, above-mentioned each optimum condition, can combination in any, obtain final product each preferable reality of the present invention
Example.
The positive effect of the present invention is：
It is bright that second micro structured pattern of these shell type drils of the present invention can correspond to any two optics in transitional region
Pseudo- light source is provided between point, by the brightness of this homogenization transitional region, and then desalinates the obvious contrast of optics bright spot and dark space.
Brief description
Fig. 1 is the top view of the side entrance back module of an embodiment of the present invention.
Fig. 2A is the partial enlarged drawing of the local M of Fig. 1.
Fig. 2 B is the outline drawing of an ellipse.
Fig. 3 is the partial enlarged drawing of the side entrance back module of another embodiment of the present invention, and its profile position is with Fig. 1's
Local M is identical.
Fig. 4 A～Fig. 4 C is the partial enlarged drawing of other comparative examples of the present invention, and its profile position is identical with the local M of Fig. 1.
Description of reference numerals：
10、11：Side entrance back module
100：Light guide plate
110：Printing opacity plate body
111：Exiting surface
112：Light incident sides
120：First micro structured pattern
130：Second micro structured pattern
131：Optical microstructures
132：Straight line
132d：The length of straight line
133：Camber line
133p：Convex arc summit
133e：End intersection point
140：Oval
141：Short axle
142：Major axis
143：Focus
150：Second micro structured pattern
151：Triangle diagonal
152：The base of triangle
160：Second micro structured pattern
161：Del diagonal
162：The base of del
170：Second micro structured pattern
171、172：Foursquare two relative edges
200：Light source
210：Substrate
220：Point source
221：Side
222：Envelope
223：Light joining
224：Interval region
AA：Area source region
M：Locally
N：Around area
T：Transitional region
Td：The width of transitional region
Specific embodiment
A plurality of embodiments of the present invention will be disclosed below with schema, as clearly stated, thin in many practices
Section will be explained in the following description.It should be appreciated, however, that the details in these practices is not applied to limit the present invention.?
That is, in some embodiments of the present invention, the details in these practices is non-essential.Additionally, for the sake of simplifying schema,
Some known usual structures and assembly will be illustrated in the drawings in the way of simple signal.
Fig. 1 shows the top view of the side entrance back module 10 according to an embodiment of the present invention.Fig. 2A shows Fig. 1
Local M partial enlarged drawing.As shown in Fig. 1 and Fig. 2A, side entrance back module 10 comprises a light guide plate 100 and a light source
200.Light guide plate 100 includes a printing opacity plate body 110, one first micro structured pattern 120 and multiple second micro structured pattern 130.Thoroughly
The external form of light plate body 110 is substantially plate-shaped, and printing opacity plate body 110 at least includes an exiting surface 111 and multiple light incident sides 112.
The common each lateral margin adjoining around exiting surface 111 and respectively exiting surface 111 of these light incident sides 112.First micro structured pattern 120
On exiting surface 111, and a face source region AA is defined on exiting surface 111.First micro- knot is not had on exiting surface 111
The remaining area of structure pattern 120 is defined as one around area N.Around area N around area source region AA, and do not have in area N
First micro structured pattern 120.Around a long and narrow area between area source region AA and wherein one light incident sides 112 for the area N
Domain is referred to as transitional region T (transition area).Second micro structured pattern 130 is in shell type dril, in transitional region T,
Shell type dril is to cut open shape partly by an ellipse 140 (i.e. oval defined in mathematics, with reference to Fig. 2 B) along its short axle 141, also known as half
Oval.
Certainly, above-mentioned embodiment is only and illustrates, because light guide plate 100 is loaded onto it will usually there be an outside framework in group
(Frame) around its surrounding, therefore above-mentioned cincture area N will be defined as at outside framework and 100 4 edge overlappings of light guide plate.But in reality
In business running, for side entrance back module framework, because adopting the lamp bar (light bar) of multiple point source compositions to emulate
The line source of traditional cold-cathode tube, transitional region T is with the presence of its necessity, but other three sides are not necessarily present.Thus may be used
Know, the first micro structured pattern 120 can cover all areas in addition to transitional region T for printing opacity plate body 110 upper or lower surface.
Light source 200 comprises a substrate 210 and multiple point sources 220.Point source 220 is, for example, light emitting diode, linear rows
Be listed on substrate 210, and point source 220 compartment of terrain in the face of printing opacity plate body 110 closest to transitional region T light incident sides 112, with
Second micro structured pattern 130 is interwoven.In other words, defining between the adjacent point source of any two 220 has between one
Septal area domain 224, every one second micro structured pattern 130 is alignd one of interval region 224 in transitional region T.
So, when these spaced point sources 220 light to light incident sides 112 and then correspond in transitional region T
When point source 220 produces optics bright spot (hot spot), the second micro structured pattern 130 of these shell type drils above-mentioned can be in transition
Form pseudo- light source corresponding to the position between wantonly two optics bright spots (hot spot) on the T of region, allow these optics bright spots and these
Pseudo- light source produces mixing, by the brightness of this homogenization transitional region T, and then desalinates the obvious contrast of optics bright spot and dark space.
More specifically, the profile of the second micro structured pattern 130 of each shell type dril (half elliptic) is by a straight line 132 and an arc
Line 133 is formed.This straight line 132 is above-mentioned oval 140 short axle 141, close, or even alignment exiting surface 111 adjoins into light
The lateral margin of side 112.Camber line 133 is for example C-shaped or U-shaped, two ends of camber line 133 connect respectively two ends of straight line 132 with
Form two relative end intersection point 133e respectively.The convex arc summit 133p of camber line 133 is compared with this two end intersection point 133e closer to the
One micro structured pattern 120.It is emphasized that the lines that the definition of shell type dril is described camber line are that do not have turning point, round and smooth
Full curve.And its concrete shape can pass through half elliptic major axis, short axle and these three parameters of focal length to control.
In other parts of present embodiment, the width Td of transitional region T is more than above-mentioned second micro structured pattern 130
Length 132d of straight line 132 is that is to say, that transitional region T is more than from light incident sides 112 to the beeline of area source region AA
Length 132d of the straight line 132 of above-mentioned second micro structured pattern 130, the second micro structured pattern 130 making aforementioned each shell type dril is in
A half elliptic now ellipse half-and-half cut open along short axle.Certainly, the restriction of this non-invention.
In other parts of present embodiment, length 132d of this straight line 132 is equal to the adjacent point source of any two
The distance between 220, in other words, the adjacent point source of any two 220, i.e. light emitting diode, it is respectively provided with and face each other
Side 221, and these sides 221 align the end intersection point 133e of above-mentioned shell type dril (half elliptic) respectively.However, the present invention
Not limited to this, in other embodiment, have the people of usual knowledge in the technical field of the invention, are also visually actually needed,
The length changing setting straight line is less than the distance between adjacent point source of any two.
In the present embodiment of part, each second micro structured pattern 130 is by multiple 131 groups of optical microstructures
Become, these optical microstructures 131 compartment of terrains are distributed.For giving an actual example, at 32 inches to 49 inches, the light guide plate of 2mm thickness sets
On meter example, with 30 microns of depth, above-mentioned optical microstructures 131, the second micro structured pattern 130 are realized in the site that 50 microns of radius
Its distribution density can be selected according to case between 30%～70%, and described distribution density refers to the total of multiple optical microstructures 131
Area and the area ratio of the second micro structured pattern 130；If this is because the brightness of point source 220 is stronger, utilize second
When micro structured pattern 130 emulates pseudo- light source, need closeer or deeper optical microstructures 131；Vice versa.Through actual fabrication sample
Product verify, it can make the optical uniformity of transitional region T reach more than 75%.However, the invention is not restricted to this, other embodiment
In, there is the people of usual knowledge in the technical field of the invention, be also visually actually needed, change and set distribution density as other models
In enclosing.
In the present embodiment of part, the profile design parameter of described shell type dril puppet light source can be done into one by following conditions
Walk estimates：With the envelope 222 of 50% light intensity of each point source 220 as basis reference, the adjacent point source of any two
220 envelope 222 has a smooth joining 223, and this light joining 223 may be defined as the shell type dril (half elliptic) of corresponding position
The convex arc summit 133p of pseudo- light source.In the above-mentioned 32 inches light guide plate actual design cases with 49 inches, point source 220 is choosing
On the basis of the envelope 222 of 50% light intensity；Certainly, the invention is not restricted to this, it is also possible to select a little in other embodiment
The envelope of other light intensities of light source, such as 40% or 60% light intensity is design the second micro structured pattern 130 scope
Foundation.
In above-mentioned 32 inches with 49 inches of light guide plate actual design case, the width Td of transitional region T is equal to above-mentioned
The half of oval 140 major axis 142 length；That is, transitional region T is from light incident sides 112 to the beeline of area source region AA
Equal to camber line 133 convex arc summit 133p to straight line 132 beeline.However, the invention is not restricted to this, other embodiment
In, there is the people of usual knowledge in the technical field of the invention, be also visually actually needed, change the width setting transitional region
Can be more than the half of above-mentioned oval long axis length.
Fig. 3 is partial enlarged drawing, its profile position and Fig. 1 of the side entrance back module 11 of another embodiment of the present invention
Local M identical.As shown in figure 3, the construction of the light guide plate of present embodiment is big with the construction of the light guide plate of above-mentioned embodiment
Cause identical, one of its difference is that the light joining 223 of the adjacent point source of any two 220 is just located at shell type dril (semiellipse
Shape) in one of specified point, be equivalent to the above-mentioned focus 143 cuing open the ellipse 140 before half.
However, the invention is not restricted to this, in other embodiment, there is usual knowledge in the technical field of the invention
Person, is also visually actually needed, and changes the light joining setting the adjacent point source of any two positioned at above-mentioned specified point and shell type dril
Between the straight line of (half elliptic), or between the convex arc summit of above-mentioned specified point and shell type dril (half elliptic).
Fig. 4 A～Fig. 4 C is the partial enlarged drawing of other comparative examples of the present invention, and its profile position is identical with the local M of Fig. 1.
In Figure 4 A, the construction of the light guide plate of this comparative example is roughly the same with the construction of above-mentioned light guide plate, and one of its difference is micro- for second
Structure plan 150 is triangular in shape, the substantially aligned light incident sides 112 in base 152 of triangle, a pair of the base 152 of triangle
Angle 151 is just located at the edge of area source region AA.If during with the second micro structured pattern 150 for triangle, inventor is according to triangle
Second micro structured pattern 150 of shape, on above-mentioned 32 inches with 49 inches of light guide plate implementation, the optics of detecting transitional region T
The uniformity, about between 50%～70%.Through comparing, compared to the second micro structured pattern 150 of triangle, when the second micro structure figure
When case is shell type dril, can get preferably light uniform results.
In figure 4b, construction, its difference one of roughly the same with the construction of above-mentioned light guide plate of the light guide plate of this comparative example
It is in del for the second micro structured pattern 160, the base 162 of triangle is located substantially at the edge of area source region AA, triangle
The pair of horns 161 on the base 162 of shape just aligns the light incident sides 112 of light guide plate 100.Likewise, with 32 inches with 49 inches
Light guide plate implementation sample test, if during with the second micro structured pattern 160 for del, the optical uniformity of transitional region T is not
Foot 50%.It follows that compared to the second micro structured pattern 160 of del, when the second micro structured pattern 160 is shell type dril
When, can get preferably light uniform results.
Finally, in figure 4 c, still with this comparative example of light guide plate implementation of above-mentioned 32 inches and 49 inches, one of its difference is
Second micro structured pattern 170 is square, and two relative edges 171,172 of square are located substantially at the side of area source region AA respectively
Edge and light incident sides 112.Inventor obtains the optical-quality homogeneous of transitional region T according to foursquare second micro structured pattern 170
Degree, about between 60%～75%.It follows that compared to foursquare second micro structured pattern 170, when the second micro structured pattern
170 when being shell type dril, can get preferably light uniform results.
So, because shell type dril is closer to the light bag shape of point source 220, add knowable to above-mentioned each comparative example, only
Second micro structured pattern of shell type dril (half elliptic) just can show preferably light uniform results in the exiting surface of light guide plate.Cause
This, the shape of the second micro structured pattern not can be with equivalent replacement by arbitrary graphic pattern.
Although the foregoing describing the specific embodiment of the present invention, it will be appreciated by those of skill in the art that this is only
It is to illustrate, protection scope of the present invention is defined by the appended claims.Those skilled in the art without departing substantially from
On the premise of the principle of the present invention and essence, various changes or modifications can be made to these embodiments, but these change and
Modification each falls within protection scope of the present invention.
Claims (8)
1. a kind of side entrance back module, comprises：
One light guide plate, comprises：
One printing opacity plate body, comprises the exiting surface that light incident sides adjoin this light incident sides with, and this exiting surface is divided into an area source
Region and one is around this area source region around area；
One first micro structured pattern, is distributed in this area source region；And
Multiple second micro structured pattern, in this cincture area, and along this light incident sides linear arrangement；And
One light source, comprises：
One substrate；And
Plurality of points light source, linear arrangement is on this substrate, and this light incident sides faced by compartment of terrain, and any two of which is adjacent
Between those point sources, definition has an interval region, and those second micro structured pattern each are alignd those interval regions wherein
Individual；It is characterized in that,
The external form of those the second micro structured pattern of each of which is to cut open shell type dril partly by an ellipse along its short axle, and this shell type dril has
There are a straight line and a camber line, two ends of this camber line connect two ends of this straight line respectively to form two relative ends friendships respectively
Point, a convex arc summit relatively those end intersection points of this camber line are closer to this first micro structured pattern, and the length of this straight line is equal to
The distance between those adjacent point sources of any two.
2. side entrance back module as claimed in claim 1 is it is characterised in that those point sources each have one 50% light intensity
The envelope of degree, those envelopes of those adjacent point sources of any two have a smooth joining, and this light joining is just logical
Cross this convex arc summit of this shell type dril.
3. side entrance back module as claimed in claim 1 is it is characterised in that those point sources each have one 50% light intensity
The envelope of degree, those envelopes of those adjacent point sources of any two have a smooth joining, and this light joining is just logical
Cross a focus of this ellipse, wherein this focus is located in this shell type dril.
4. a kind of light guide plate, comprises：
One printing opacity plate body, comprises the exiting surface that light incident sides adjoin this light incident sides with, and this exiting surface is divided into an area source
Region and one is around this area source region around area；
One first micro structured pattern, is distributed in this area source region；And
A plurality of second micro structured pattern, in this cincture area, and along this light incident sides linear arrangement；It is characterized in that,
The external form of those the second micro structured pattern of each of which is to cut open shell type dril partly by an ellipse along its short axle, and this shell type dril has
There are a straight line and a camber line, two ends of this camber line connect two ends of this straight line respectively to form two relative ends friendships respectively
Point, a convex arc summit relatively those end intersection points of this camber line are closer to this first micro structured pattern, and the length of this straight line is equal to
The length of this oval short axle.
5. light guide plate as claimed in claim 4 is it is characterised in that a width in this cincture area is equal to a long axial length of this ellipse
The half of degree.
6. a kind of light guide plate, receives a plurality of spaced point sources with light incident sides, and then constitutes a side entrance back
Module, this light guide plate includes：
One printing opacity plate body, including a face source region and a transitional region, this transitional region is in long and narrow, and is located at this area source
Between region and this light incident sides；
One first micro structured pattern, is distributed in this area source region；And
A plurality of second micro structured pattern, it is characterised in that those second micro structured pattern each are in this transitional region
In the shell type dril that an ellipse is cutd open along its short axle half and interwoven with those point sources spaced；
Wherein, when those point light source light-emittings spaced, those second micro structured pattern are spaced in any two
Form pseudo- light source between those point sources, and then desalinate optics bright spot.
7. light guide plate as claimed in claim 6 is it is characterised in that those point sources of each of which have one 50% light intensity
Envelope, those envelopes of those adjacent point sources of any two have a smooth joining, and this light joining just passes through phase
The convex arc summit of this adjacent shell type dril.
8. light guide plate as claimed in claim 6 is it is characterised in that those point sources of each of which have one 50% light intensity
Envelope, those envelopes of those adjacent point sources of any two have a smooth joining, and this light joining is just passed through should
An oval focus, wherein this focus are located in this shell type dril.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410811966.3A CN104501045B (en) | 2014-12-23 | 2014-12-23 | Laterally-incoming-type backlight module and light guide plate thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410811966.3A CN104501045B (en) | 2014-12-23 | 2014-12-23 | Laterally-incoming-type backlight module and light guide plate thereof |
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| Publication Number | Publication Date |
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| CN104501045A CN104501045A (en) | 2015-04-08 |
| CN104501045B true CN104501045B (en) | 2017-02-22 |
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| CN105929481A (en) * | 2016-07-15 | 2016-09-07 | 周翠敏 | Backlight module and light guide plate thereof |
| CN109738981A (en) * | 2018-12-28 | 2019-05-10 | 深圳市高美福电子有限公司 | The site arrangement and backlight module of lamp shadow phenomenon can be eliminated |
| CN110187430B (en) * | 2019-05-29 | 2024-02-06 | 重庆翰博光电有限公司 | Light guide plate mesh point arrangement structure and design method thereof |
| CN112099257B (en) * | 2020-09-29 | 2022-08-12 | 厦门天马微电子有限公司 | Display module, display device and application method of display module |
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| JP3834152B2 (en) * | 1998-05-01 | 2006-10-18 | 三和興産株式会社 | Method for producing L-arabinose by acid hydrolysis method |
| CN100419528C (en) * | 2003-08-14 | 2008-09-17 | 鸿富锦精密工业（深圳）有限公司 | Back light assembly and its light guide board |
| KR20060093892A (en) * | 2005-02-23 | 2006-08-28 | 주식회사 이라이콤 | Back light unit |
| CN2800298Y (en) * | 2005-05-28 | 2006-07-26 | 群康科技(深圳)有限公司 | Light guide plate and back light module |
| CN101852363B (en) * | 2009-03-31 | 2013-01-16 | 展晶科技(深圳)有限公司 | Back light module |
| CN102997123B (en) * | 2011-09-13 | 2014-12-10 | 扬升照明股份有限公司 | Backlight module |
-
2014
- 2014-12-23 CN CN201410811966.3A patent/CN104501045B/en active Active
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| CN104501045A (en) | 2015-04-08 |
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