CN103104858B - Backlight module and display device - Google Patents
Backlight module and display device Download PDFInfo
- Publication number
- CN103104858B CN103104858B CN201210099579.2A CN201210099579A CN103104858B CN 103104858 B CN103104858 B CN 103104858B CN 201210099579 A CN201210099579 A CN 201210099579A CN 103104858 B CN103104858 B CN 103104858B
- Authority
- CN
- China
- Prior art keywords
- light source
- spacing
- peeled
- region
- rhizoma dioscoreae
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Planar Illumination Modules (AREA)
Abstract
The present invention provides a kind of backlight module, and it includes a substrate, at least one Rhizoma Dioscoreae (peeled) and multiple optical element.Substrate has a first side.Rhizoma Dioscoreae (peeled) has multiple light source, and includes a first area and a second area.Adjacent first side, first area, the light source in first area has one first spacing.Second area adjacent first regions, the light source in second area has one second spacing, wherein first is smaller than the second spacing.Optical element is arranged at above each light source, the light sent in order to uniform source of light.
Description
Technical field
The present invention is about a kind of backlight module, especially with regard to one by light source arrangement mode, to improve
The backlight module of penumbra area phenomenon.
Background technology
It is typically employed in the liquid crystal display of massaging device, according to the demand of actual design, and profit can be selected
With the backlight module framework of straight-down negative or side-light type.In direct type backlight module, the corner of display device
Irradiate produced penumbra area in default of light, cause display quality to decline.
In known technology, generally use diffuser plate, make the uniform light passed through shed.Wherein, in order to add
Effect of high light diffusion and the uniformity of light mixing, the gap between light source and diffuser plate must increase, or
The usage quantity of diffuser plate must increase.But, it is fairly limited that structure so designs not only effect, and will
The thickness causing backlight module increases, and the design original intention lightening with liquid crystal display is disagreed.
It addition, in order to make display device receive more light from backlight module, the configuration of backlight module domestic demand is more
Luminous source.But, in the backlight module that an application light emitting diode is luminous source, the system of light emitting diode
Make cost intensive, by unfavorable economic considerations.
Summary of the invention
In view of this, a purpose of the present invention is to provide a kind of backlight module, by light source on backlight module
Arrangement change, strengthen display device corner light source supply.Another object of the present invention is to reduce light source
Quantity, to reduce production cost.
For reaching above-mentioned purpose, the present invention provides a kind of backlight module, and it includes a substrate, at least one Rhizoma Dioscoreae (peeled)
And multiple optical element.Substrate has a first side.Rhizoma Dioscoreae (peeled) has multiple light source, and includes a first area
And a second area.Adjacent first side, first area, the light source in first area has one first spacing.
Second area adjacent first regions, the light source in second area has one second spacing, and wherein the first spacing is little
In the second spacing.Optical element is arranged at above each light source, and the incidence surface of each of which optical element includes one
First concave curved faces away from the direction depression of light source, and the exiting surface of optical element includes one second concave curved surface court
The direction depression of light source.
The present invention also provides for a kind of display device applying above-mentioned backlight module, and wherein a display floater is arranged at
On above-mentioned backlight module.
Owing to being smaller than other districts near the spacing between substrate first side and the adjacent light source of second side
Spacing between the adjacent light source of territory, and through optical element, light source is the most uniformly spread, will make to show
The each region of showing device obtains the light source from backlight module fully.So, it is known that the brightness of display screen is not
Uniformly shortcoming can obtain improvement.
Accompanying drawing explanation
For the above-mentioned purpose of the present invention, feature and advantage can be become apparent, below in conjunction with accompanying drawing to this
Bright detailed description of the invention elaborates, wherein:
Fig. 1 shows the profile of the display device of presently preferred embodiments of the present invention；
Fig. 2 shows the top view of the subelement of Fig. 1；
Fig. 3 shows that the distribution of light sources density of the unit length of presently preferred embodiments of the present invention is relative to Rhizoma Dioscoreae (peeled) position
Curve chart；
Fig. 4 shows the top view of the subelement of the display device of another embodiment of the present invention；
Fig. 5 shows the top view of the subelement of the display device of another embodiment of the present invention；
Fig. 6 shows the enlarged drawing of subelement in Fig. 1；
The structure of the optical element of the different kenel of Fig. 7 A-7E display；
The structure of the optical element of the different kenel of Fig. 8 A-8B display；
The structure of the optical element of the different kenel of Fig. 9 A-9D display；
The light source of Figure 10 A display presently preferred embodiments of the present invention and the ground plan of optical element；And
The light source of Figure 10 B display another embodiment of the present invention and the ground plan of optical element.
Main element symbol description:
1～display device
10,10 '～backlight module
20～optical diaphragm layer
30～display floater
50～substrate
51～minor face side plate (first side)
52～minor face side plate (second side)
53,54～long side plate
531,541～midpoint
55～optical reflecting layer
56～base plate
100,100 '～Rhizoma Dioscoreae (peeled)
110,110 ', 210～light source
140,240～optical element
141,241～first concave curved surface
143,243～exiting surface
145,245～bottom surface
147～support member
240a-240e～optical element
241a-241e～the first concave curved surface
247d～projection
340a-340b～optical element
341a-341b～the first concave curved surface
345a-345b～bottom surface
440a-440b～optical element
445a-445d～bottom surface
449a-449d～micro structure
C～axis
D～unit length distribution of light sources density
D1-D4～width
E1～first width (short axle)
E2～second width (major axis)
H～height
L～long limit
L1～the first distance
L2～second distance
M～symmetrical centre
P1-p9～spacing
S1～the second concave curved surface
S2～convex surface
S21～the first light output surface
S22～the second light output surface
W～minor face
θ1、θ2、θ3～angle
I～first area
II～second area
III～the 3rd region
IV～the 4th region
V～the 5th region
VI～the 6th region
VII～SECTOR-SEVEN territory
VIII～the first district of intermediary
IX～the second district of intermediary
Detailed description of the invention
Now coordinate accompanying drawing explanation preferred embodiment.
Refer to Fig. 1,2.The display device 1 of presently preferred embodiments of the present invention include a backlight module 10,
One optical diaphragm layer 20 and a display floater 30, wherein backlight module 10 includes substrate 50, optics
55, two, reflecting layer Rhizoma Dioscoreae (peeled) 100, multiple light source 110 and multiple optical element 140.
Substrate 50 in order to carry and to position the optical element in backlight module 10, it include two minor face side plates 51,
52, two long side plate 53, a 54 and base plate 56, in one embodiment, the length-width ratio of its base plate 56
For 16:9, wherein minor face side plate 51,52 is the vertical direction being defined in Fig. 2 drawing, long side plate 53,
54 is the horizontal direction being defined in Fig. 2 drawing, and minor face side plate 51,52 and long side plate 53,54 are and the end
Plate 56 is connected, and its planar process vector is mutually perpendicular to two-by-two or out of plumb all may be used.It is said that in general, when this
When bright display device 1 is uprightly furnished, minor face side plate 51,52 is the side, left and right two being positioned at user, long
Side plate 53,54 is that two sides up and down being positioned at user (will represent minor face with first side in following description
Side plate 51, second side represent minor face side plate 52).Optical reflecting layer 55 is arranged at the inner side of substrate 50,
With reflection light to increase light diffusion effect.Substrate 50 is furnished with driver circuit, can electrically connect other elements and make
Backlight module 10 operates.
Two Rhizoma Dioscoreae (peeled) 100 are arranged on base plate 56 with the direction being parallel to long side plate 53,54.Each light
Articles 100 include respectively a first area I, a second area II, one the 3rd region III, one the 4th region IV,
One the 5th region V, one the 6th region VI, a SECTOR-SEVEN territory VII, one first intermediary district VIII, one second
Intermediary district IX.Adjacent first side, first area I 51, second area II adjacent first regions I, the 3rd district
The adjacent second side of territory III 52, the 4th IV adjacent third section, region III, the 5th region V is between second
Between region II and the 4th region IV, between the 5th region V and second area II, there is the 6th region VI
And the first intermediary district VIII, between the 5th region V and the 4th region IV, there is SECTOR-SEVEN territory VII and second
Intermediary district IX.Additionally, in this embodiment, the 5th V essence middle position, region has an axis C
Being passed, wherein the distance of 100 liang of short sides of axis C and Rhizoma Dioscoreae (peeled) is equal, this Rhizoma Dioscoreae (peeled) 100 of decile, and
And each region is mirror image distribution along axis C, the namely corresponding 3rd region III of first area I, the secondth district
II corresponding 4th region IV, the 6th region VI correspondence SECTOR-SEVEN territory VII, first intermediary district VIII in territory is corresponding
Second intermediary district IX, the 5th corresponding 5th region V right part of region V left part.But, Yu Qi
In his embodiment, axis C not necessarily passes through the specific region of Rhizoma Dioscoreae (peeled) 100, and in Rhizoma Dioscoreae (peeled) 100, each region is also
Not necessarily along axis C be mirror image distribution.Rhizoma Dioscoreae (peeled) 100 e.g. printed circuit board (PCB) (PCB), has light source and drives
Moving-wire road, luminous after making light source 110 receive the signal of telecommunication.Light source 100 along Rhizoma Dioscoreae (peeled) 100 major axis substantially in one
Straight line is arranged, and single Rhizoma Dioscoreae (peeled) 100 can accommodate the array of source that one or more straight line is arranged.Additionally, it is single
Between the light source 110 of array of source, cording has a design of unequal-interval, but the light source 110 in same " region "
Spacing is identical, and namely the density d of light source 110 is identical, and light source 110 spacing in " district of intermediary " is not
The most identical, its light source 110 density d can be definite value or changing value, wherein the spacing (pitch) of light source 110,
Mean the beeline at two adjacent light sources 100 center, more than 0.
First area I is the region of the closest first side of Rhizoma Dioscoreae (peeled) 100 51, has multiple light source 110, that
Form more than one light source 110 spacing between this, but all there is common light source 110 spacing p1.Second
II adjacent first regions, region I, has multiple light source 110, forms more than one light source 110 each other
Spacing, but all there is common light source 110 spacing p2, wherein p1 is less than p2, in other words first area
I light source 110 density d is more than second area II light source 110 density d.First area I and second area II
Adjacent part system is shared light source 110, and this light source 110 center shared is spacing p1 and spacing
(switching boundary) is had a common boundary in the conversion of p2.
The region of the 3rd closest second side 52 of region III system Rhizoma Dioscoreae (peeled) 100, has multiple light source 110,
Form more than one light source 110 spacing each other, but all there is common light source 110 spacing p3.The
Four IV adjacent third section, region III, have multiple light source 110, form more than one light each other
Source 110 spacing, but all there is common light source 110 spacing p4, wherein p3 is less than p4, and in other words the
Three region III light source 110 density d are more than the 4th region IV light source 110 density d.3rd region III and
Part system adjacent for four region IV is shared light source 110, and this light source 110 center shared is spacing
P3 has a common boundary with the conversion of spacing p4.In this embodiment, first area I and the 3rd region III spacing number
Equal, and spacing p1 is equal to p3；Second area II and the 4th region IV spacing number are equal, and spacing
P2 is equal to p4, but does not limit as this.In other embodiments, spacing p1 and spacing p3 can be unequal,
Spacing p2 and spacing p4 can be unequal, or spacing p1 is different from spacing p2～p4.In short, along axis
Line C be mirror image distribution regional between can be identical or different away from number.It addition, Rhizoma Dioscoreae (peeled) 100
Second area II also can be combined with the 4th region IV, or Rhizoma Dioscoreae (peeled) 100 only includes first area I and second
Region II ... etc., hold depending on the design of overall optics.
5th region V system, between second area II and the 4th region IV, has multiple light source 110, each other
Between form more than one light source 110 spacing, but all there is common light source 110 spacing p5.Real in this
Execute in example, between the 5th region V and second area II and the 4th region IV between be separated with other regions, and
Five region V are positioned at Rhizoma Dioscoreae (peeled) 100 center, and axis C passes through the 5th region V central authorities, and spacing p5 is little
In spacing p2 and spacing p4, light source 110 density d of the 5th region V is more than second area II comparatively speaking
And the 4th region IV, light source 110 is substantially presented by the density d in direction, 51 to second side, first side 52
Close-to dredge-close-to dredge-close arrangement mode.In other embodiments, axis C does not pass through in the 5th region V
Centre, spacing p5 can be equal or different in spacing p1～p4, the 5th region V can be with second area II, the 4th districts
Territory IV is adjacent even to be combined, even without the 5th region V ... etc., hold depending on the design of overall optics.
6th region VI system, between second area II and the 5th region V, has multiple light source 110,
Form more than one light source 110 spacing each other, but all there is common light source 110 spacing p6, its
Middle spacing p6 is more than spacing p1 and spacing p2.SECTOR-SEVEN territory VII system is between the 4th region IV and the 5th district
Between the V of territory, there is multiple light source 110, form more than one light source 110 spacing each other, but all
Having common light source 110 spacing p7, wherein spacing p7 is more than spacing p3 and spacing p4.In this enforcement
In example, the 6th region VI is adjacent with second area II, and SECTOR-SEVEN territory VII and the 4th region IV phase are o-, m-
Away from p6 equal to spacing p7, and spacing p6 and spacing p7 are all more than spacing p1～p5, in other words, the 6th
Light source density d of region VI and SECTOR-SEVEN territory VII is big relative to other regions, and light source 110 is by first side
The density d in direction, 51 to second side 52 presents close-thin-close-thin-close arrangement mode equally.Real in other
Executing in example, the 6th region VI can be non-conterminous with second area II, and SECTOR-SEVEN territory VII and the 4th region IV can
Non-conterminous, spacing p6 and spacing p7 can be equal or unequal with the relation of other spacing p1～p5, the 6th district
Territory VI and SECTOR-SEVEN territory VII also can be in conjunction with other regions, even without the 6th region VI and SECTOR-SEVEN territory VII ...
Deng, hold depending on the design of overall optics.
First VIII system of district of intermediary, between the 5th region V and the 6th region VI, has multiple light source 110,
Form more than one light source 110 spacing each other, can have identical or different light source 110 spacing,
But away from for spacing p8 between average light source.Second IX system of district of intermediary is between the 5th region V and SECTOR-SEVEN territory VII
Between, there is multiple light source 110, form more than one light source 110 spacing each other, can have phase
With or different light source 110 spacing, but average space between light sources is spacing p9.In the present embodiment, the
Space between light sources in one intermediary district VIII and the second intermediary district IX is identical, and spacing p8 and spacing p9 are identical,
And the first adjacent 5th region V and the 6th region VI of intermediary district VIII, the second adjacent 5th district of intermediary district IX
Territory V and the 6th region VII.District of intermediary can be considered by the single interval of multiple region merging technique.Implement in other
In example, the spacing in the first intermediary district VIII and the second intermediary district IX can be change, the most cumulative,
Decrescence, equal or irregularly change, spacing p8 and spacing p9 there is no specific relation with spacing p1～p7,
Spacing in first intermediary district VIII or the second intermediary district IX can between adjacent area spacing p5～p7 or
Arbitrary value, the first intermediary district VIII or the second intermediary district IX also can be in conjunction with other regions, even without in first
Jie district VIII or the second intermediary district IX ... etc., hold depending on the design of overall optics.The concept in district of intermediary can
Extend, such as between second area II and the 6th region VI or the 4th region IV and SECTOR-SEVEN territory VII
Between insert a district of intermediary.
In one embodiment, the size of the display device 1 of application backlight module 10 is 31.5 inches,
Spacing p1 and spacing p3 be 40mm, spacing p2 and spacing p4 be 50mm, spacing p6 and spacing p7
Being 50mm for 60mm, spacing p8 and spacing p9, spacing p5 is 40mm, and light source 110 is by the first side
The density d in direction, 51 to second side, limit 52 presents close-thin-close-thin-close arrangement mode equally.But not
It is limited to this.It should be noted that in the present embodiment, although be positioned at axis C bis-side of Rhizoma Dioscoreae (peeled) 100
Spacing p1～p9 mirror one another, but and should not necessarily be limited to this.Those skilled in the art can be according to this reality
Execute the essence spirit of example, adjusted the spacing between adjacent light source.
Optical element 140 is arranged on each light source, light diffusion angle in order to increase, to reduce light source
Usage quantity, and adjust light light shape to reduce light mixing distance, reaching the effect of homogenization simultaneously, it is detailed
Feature will illustrate in rear.Optical diaphragm layer 20 is arranged at the top of substrate 50 relative to backlight module 10,
And display floater 30 is arranged at the top of optical diaphragm layer 20.Optical diaphragm layer 20, aobvious due to the present invention
Show the well known elements that panel 30 is this area, and the non-content emphasized by the present invention, do not gone to live in the household of one's in-laws on getting married at this
State.
Refer to Fig. 3.Fig. 3 shows in presently preferred embodiments of the present invention, distribution of light sources density in unit length
D is relative to the curve chart of Rhizoma Dioscoreae (peeled) 100 position.Overall View it, in the above embodiment of the present invention, unit is long
Degree distribution of light sources density d has change, wherein from the first side 51 of substrate 50 towards second side 52
Direction on, unit length distribution of light sources density d presents close, thin, close, thin, close change.Specifically
It, from first area I to the 6th region VI, unit length distribution of light sources density d is decrescence；From the 6th region
IV to the 5th region V, unit length distribution of light sources density d is cumulative；From the 5th region V to SECTOR-SEVEN territory
VII, unit length distribution of light sources density d is decrescence；From SECTOR-SEVEN territory VII to second area II, unit length
Distribution of light sources density d is cumulative.
It is indebted to the arrangement mode of light source 110 in two Rhizoma Dioscoreae (peeled) 100, during display floater 30 is except maintaining
Heart brightness, its four corner also can increase the light of reception.It is thus known that in technology, four corners have blanking bar
The situation in district can be improved.In an experimental data, the center brightness of display floater 30 is 105%, and all
Qi Du is 65%, and at this, all neat degree is defined as the ratio of display floater dim spot and bright spot.
Refer to Fig. 4.Fig. 4 shows the top view of the backlight module 10 ' of another embodiment of the present invention.For simplifying
Illustrating, backlight module 10 ' element same or analogous to backlight module 10 will bestow similar label, and its
Feature will not be described again.
The form of the light source in Rhizoma Dioscoreae (peeled) 100 ' is not limited by the embodiment institute shown in Fig. 2.In another embodiment
In, adjacent 5th region V is the 6th region VI and SECTOR-SEVEN territory VII, there is no the district of intermediary of previous embodiment
First intermediary district VIII and the second intermediary district IX.
In one embodiment, the size of the display device (being not shown in Fig. 4) of application backlight module 10 '
Be 31.5 inches, spacing p5 be 50mm, spacing p6 and spacing p7 be 70mm, spacing p2 and spacing
P4 be 40mm, spacing p1 and spacing p3 be 30mm, but be not restricted to this.It should be noted that
In the present embodiment, although the spacing of axis C bis-side being positioned at Rhizoma Dioscoreae (peeled) 100 ' is mutually symmetrical, but should not
It is limited to this.Those skilled in the art can be adjusted between adjacent light source according to the essence spirit of the present embodiment
Spacing.
In an experimental data, use the center of the display floater (being not shown in Fig. 4) of this backlight module 10 '
Brightness is 100%, and all neat degree is 70%, and at this, all neat degree is defined as display floater dim spot and bright spot
Ratio.
Refer to Fig. 5.Fig. 5 shows the backlight module 10 of another embodiment of the present invention " subelement upper
View.For simplifying explanation, backlight module 10 " element same or analogous to backlight module 10 will bestow similar
Label, and its feature will not be described again.
In order to improve application backlight module 10 further " display device (being not shown in Fig. 5) penumbra area
Situation, the axis C of two Rhizoma Dioscoreae (peeled) 100 is respectively from the midpoint 531,541 of two long side plates 53,54
Line offset to the left and to the right.As shown in Figure 5, it is positioned at the Rhizoma Dioscoreae (peeled) (the first Rhizoma Dioscoreae (peeled)) 100 above drawing
Axis C relative to the line left shift at midpoint 531,541, and be positioned at the Rhizoma Dioscoreae (peeled) (below drawing
Two Rhizoma Dioscoreae (peeled)) 100 axis C offset to the right relative to the line at midpoint 531,541.Then, it is positioned at figure
The short side of the Rhizoma Dioscoreae (peeled) (the first Rhizoma Dioscoreae (peeled)) 100 above face is relatively positioned at the Rhizoma Dioscoreae (peeled) (the second Rhizoma Dioscoreae (peeled)) below drawing
The short side of 100 near first side 51, the wherein short side of the Rhizoma Dioscoreae (peeled) (the first Rhizoma Dioscoreae (peeled)) 100 above drawing
There is between limit and first side 51 first distance L1, be positioned at Rhizoma Dioscoreae (peeled) 100 (the second Rhizoma Dioscoreae (peeled)) below drawing
Short side and first side 51 between there is second distance L2, wherein the first distance L1 is less than second distance
L2。
The architectural feature of the optical element 140 of the present invention will be further illustrated.Refer to Fig. 6, Fig. 6 show
The enlarged drawing of subelement in Fig. 1, the most only show single optical element 140, single light source 110 and
Part substrate 50.Optical element 140 includes one first concave curved surface 141, exiting surface 143, bottom surface 145
And the support member 147 of more than two.First concave curved surface 141, in the face of the exiting surface of light source 110, wherein comes
Enter in optical element 140 through the first concave curved surface 141 from the light of light source 110.That is, the first concave curved surface
141 is the incidence surface of optical element 140, but should not necessarily be limited to this.Light also may be through optical element 140
Bottom surface 145 enter in optical element 140.First concave curved surface 141 from bottom surface 145 towards away from light source 110
The direction depression of exiting surface, and as shown in Figure 6 as, the first concave curved surface 141 substantially has half long ellipse
External form.Additionally, symmetrical centre M of the first concave curved surface 141 opposing optical element 140 is axisymmetricly.Change
Sentence is talked about, and the cross section of the first concave curved surface 141 is a circular or oval (thin portion for the first concave curved surface 141
Feature will describe in detail in the explanation of Figure 10 A figure).
Exiting surface 143 is in the face of optical diaphragm layer 20 (Fig. 1), that is is positioned at optical element 140 in contrast to light
The side in source 110.Exiting surface 143 includes one second concave curved surface S1, a convex surface S2.In this embodiment
In, the second concave curved surface S1 and convex surface S2 system axial symmetry in symmetrical centre M, wherein symmetrical centre M
Through the center of light source 110 and the substantial center of optical element 140.Second concave curved surface S1 is towards light source 110
Direction depression, and the angle theta between its normal and direction X1It is 90 to 180 degree.Convex surface S2 ring
It is around in outside the second concave curved surface S1, and includes one first light output surface S21 and one second light output surface S22.
First light output surface S21 this second concave curved surface adjacent S1, the wherein normal of the first light output surface S21 and direction
Angle theta between X2It it is 0 to 90 degree.The adjacent first light output surface S21 of second light output surface S22 away from
The side of the second concave curved surface S1, the wherein angle theta between normal and the direction X of the second light output surface S223
Between angle be 0 to-90 degree, above-mentioned direction X system extends and parallel substrate outside optical element 140
The direction of 50, as shown in Figure 6 as.
Bottom surface 145 is between the first concave curved surface 141 and the second light output surface S22, and bottom surface 145 is by propping up
Support member 147 is linked to substrate 50.In order to make the light of light source 110 all can enter via the first concave curved surface 141
Among optical element 140, in this embodiment, the height H of support member 147 is equal to light source exiting surface to base
The distance of plate 50, makes bottom surface 145 be positioned at the plane at exiting surface place of light source 110.Additionally, support member
147 is a cylinder or vertebral body, its width D 1 between the 2% to 20% of the width D 2 of bottom surface 145,
But it is not restricted to this.Do not affect light diffusion principle under, support member 147 arrange position, shape,
Size all may be adjusted.
As it should be noted that as shown in Figure 6, the first concave curved surface 141 of optical element 140, exiting surface
143 are all the curved surface with continuous curvature, and the bottom surface 145 of optical element 140 is then substrate 50 faced by
Plane；Additionally, the first concave curved surface 141 is to be more than or equal in the face of the width D 3 of the opening of this light source 110
The width D 4 of light source 110, to avoid light source 110 to interfere with optical element 140.It is embodied as one
The width D 3 of the opening of example the first concave curved surface 141 is 100% to 150 of the width D 4 between light source 110
Between %.
From the light of light source 110 after above-mentioned optical element 140, its light shape will adjust, to improve
It is irradiated in the uniform light degree of optical diaphragm layer 20 (Fig. 1).Therefore the one-tenth of display device 1 (Fig. 1)
As quality will obtain improvement further.
The architectural feature of the optical element 140 of the present invention can be changed because of demand, carrying of following illustrative
For the embodiment that optical element is possible: refer to Fig. 7 A-Fig. 9, at the optical element shown in Fig. 7 A-Fig. 9
In, the element similar or corresponding with optical element 140 (Fig. 6) will bestow similar label, and say
Bright feature will be omitted in the following description.
The kenel of the first concave curved surface of optical element can have following change: the first of optical element 240a is recessed
Curved surface 241a substantially has semicircular external form (Fig. 7 A), first concave curved surface of optical element 240b
241b substantially has the external form (Fig. 7 B) of half flat ellipse, the first concave curved surface 241c of optical element 240c
Substantially there is corrugated external form (Fig. 7 C), or the first concave curved surface 241d of optical element 240d
Substantially having the external form of class bielliptic(al), wherein a protruding 247d is formed at its substantial center (Fig. 7 D).
In one embodiment, optical element 240d is applied to a 3D display device, and the first concave curved surface 241d
The light that two light sources 110 being relatively arranged on protruding 247d both sides are sent can be received.Need according to difference
Seek available different optical element, make light diffusion effect reach optimal.For example, in one embodiment,
When multiple light sources are arranged at single optical element inside, the optical element 240c of Fig. 7 C or the light of Fig. 7 D
Learning element 240d can make light diffusion effect reach optimal.
In another embodiment, the first concave curved surface 241e of optical element 240e is non-axis symmetry, such as Fig. 7 E
As Suo Shi, the external form of the first concave curved surface 241e is crooked towards a specific direction, goes out light creating left and right sides difference
Effect of amount.
The kenel of the bottom surface of optical element can have a following change:
In the embodiment shown in Fig. 8 A, the tangent line of the first concave curved surface 341a adjacent bottom surface 345a and light source
Angle α between the exiting surface place plane of 110 is equal to 90 degree, now, and the bottom surface of optical element 340a
345a system is aligned in the exiting surface place plane of light source 110.In the embodiment shown in Fig. 8 B, first is recessed
Angle α between tangent line and the exiting surface place plane of light source 110 of curved surface 341b adjacent bottom surface 345b is little
In 90 degree, now, the light leaving light source 110 with the maximum angle of emergence will pass through optics the most in the horizontal direction
Element 340b.Now, the exiting surface place plane of the bottom surface 345b of optical element 340b and light source 110 it
Between there is an angle β, to save the production material of optical element, reduce cost.
In the embodiment shown in Fig. 9 A, the bottom surface 445a of optical element 440a also includes multiple depression
Micro structure 449a, each micro structure has a semicircular appearance.In the embodiment shown in Fig. 9 B, light
The bottom surface 445b learning element 440b also includes micro structure 449b of multiple projection, and each micro structure has half
Circular appearance.In the embodiment shown in Fig. 9 C, the bottom surface 445c of optical element 440c also includes many
Micro structure 449c of individual depression, each micro structure has a semi-hexagonal appearance.In the reality shown in Fig. 9 D
Executing in example, the bottom surface 445d of optical element 440d also includes micro structure 449d of multiple projection, each micro-knot
Structure has a semi-hexagonal appearance.The moulding of raised or sunken micro structure can be arbitrary shape, is not subject to
It is limited to above-described embodiment.In one embodiment, above-mentioned raised or sunken micro structure the degree of depth or height
Smaller than the 10% of the width of the bottom surface of optical element.Although it addition, in the above-described embodiments, adjacent protrusion
Or the micro structure of depression is all equidistantly, but raised or sunken micro structure can also irregular fractions distribution.
Refer to light source 110 and the optical element of Figure 10 A, Figure 10 A display presently preferred embodiments of the present invention
The ground plan of 140.In this embodiment, light source 110 is a square, therefore from the light of light source 110
To penetrate towards all directions equably.For coordinating the light shape of the light of light source 110, the first concave curved surface 141 is preferable
Ground is that axial symmetry is in the symmetrical centre of optical element 140.Refer to Figure 10 B, Figure 10 B display present invention's
The light source 210 of another embodiment and the ground plan of optical element 240.In this embodiment, light source 210 is
One rectangle with width W and length L, therefore will provide relatively in the side of length L from light source 210
Many light, and less light is provided in the side of width W.For coordinating the light shape of the light of light source 210,
First concave curved surface 241 is preferably in the symmetrical centre of optical element 140 for non-axis symmetry, with relative to light
Length L side, source 210 provides bigger light-receiving area, and provides relative to light source 210 width W side
Less light-receiving area.In one embodiment, the opening of the first concave curved surface 241 is one to have short axle
(the first width) E1And major axis (the second width) E2Ellipse, wherein the one of light source 210 width W
Side corresponds to major axis (the second width) E2, and the side of light source 210 length L is corresponding to short axle (the first width
Degree) E1.More specifically, the side of light source 210 width W is along major axis (the second width) E2Arrange, and
The side of light source 210 length L is along short axle (the first width) E1Arrange.Referring to Figure 10 A, 10B,
It was found by the inventors of the present invention that the light shape emitted beam according to light source 110,210 adjust optical element 140,
The shape of the incidence surface 141,241 of 240, can be further up to the purpose of uniform in light emission.
By the arrangement of light source of backlight module, being positioned at that the light of display device four corner spends the most together can be effectively
It is enhanced, contributes to improving the image quality of display floater.On the other hand, by optical element diffusion from
The light of light source, the quantity of light source of backlight module can reduce further, to reduce production cost.
Although the present invention discloses as above with preferred embodiment, so it is not limited to the present invention, Ren Heben
Skilled person, without departing from the spirit and scope of the present invention, when making a little amendment and perfect,
Therefore protection scope of the present invention is when with being as the criterion that claims are defined.
Claims (27)
1. a backlight module, including:
One substrate, has a first side, and this first side is a minor face side plate of this substrate；
One first Rhizoma Dioscoreae (peeled) and one second Rhizoma Dioscoreae (peeled), this first Rhizoma Dioscoreae (peeled) and this second Rhizoma Dioscoreae (peeled) are adjacent and are perpendicular to
This first side, this first Rhizoma Dioscoreae (peeled) and this second Rhizoma Dioscoreae (peeled) have multiple light source, and include respectively:
One first area, this first side adjacent, the light source in this first area has between one first
Away from；And
One second area, this first area adjacent, the light source in this second area has between one second
Away from, wherein this first is smaller than this second spacing；And
Multiple optical elements, are arranged at above each described light source, optical element described in each of which
Face away from the direction depression of light source including one first concave curved, and described optical element includes that one second is recessed
Curved surface caves in towards the direction of light source,
Wherein having one first distance between this first Rhizoma Dioscoreae (peeled) and this first side, this first distance is
This first Rhizoma Dioscoreae (peeled) and the beeline of this first side, have between this second Rhizoma Dioscoreae (peeled) and this first side
One second distance, this second distance is the beeline of this second Rhizoma Dioscoreae (peeled) and this first side, and this
One distance less than this second distance,
It is characterized in that, the cross section of this first concave curved surface include one first width and one more than this
Second width of one width, wherein the long limit of the exiting surface of this light source corresponds to this first width, and should
The minor face of the exiting surface of light source corresponds to this second width.
2. backlight module as claimed in claim 1, it is characterised in that this substrate has one second side
Limit, this second side is relative with this first side, and this first Rhizoma Dioscoreae (peeled) and this second Rhizoma Dioscoreae (peeled) include respectively:
One the 3rd region, this second side adjacent, the light source in the 3rd region has one the 3rd spacing；
And
One the 4th region, adjacent 3rd region, the light source in the 4th region has one the 4th spacing,
Wherein the 3rd it is smaller than the 4th spacing.
3. backlight module as claimed in claim 2, it is characterised in that this first spacing is equal to the 3rd
Spacing.
4. backlight module as claimed in claim 2, it is characterised in that this second spacing is equal to the 4th
Spacing.
5. backlight module as claimed in claim 2, it is characterised in that between this second area and the 4th
Being situated between away from and have one the 5th region, the light source in the 5th region has one the 5th spacing.
6. backlight module as claimed in claim 5, it is characterised in that the 5th region and this secondth district
Territory and the 4th region are adjacent.
7. backlight module as claimed in claim 5, it is characterised in that the 5th region and this secondth district
Being situated between territory and have one the 6th region, the light source in the 6th region has one the 6th spacing, and the 6th spacing is big
In this second spacing and the 5th spacing.
8. backlight module as claimed in claim 7, it is characterised in that the 6th region and this secondth district
Territory and the 5th region are adjacent.
9. backlight module as claimed in claim 7, it is characterised in that the 5th region and the 6th district
It is situated between territory and has one first district of intermediary.
10. backlight module as claimed in claim 7, it is characterised in that the 5th region and the 4th region
Between be situated between have a SECTOR-SEVEN territory, the light source in this SECTOR-SEVEN territory has one the 7th spacing, and the 7th spacing is more than
4th spacing and the 5th spacing.
11. backlight modules as claimed in claim 10, it is characterised in that this SECTOR-SEVEN territory and the 4th district
Territory and the 5th region are adjacent.
12. backlight modules as claimed in claim 10, it is characterised in that the 6th spacing is equal to the 7th
Spacing.
13. backlight modules as claimed in claim 10, it is characterised in that the 5th region and this SECTOR-SEVEN
It is situated between territory and has one second district of intermediary.
14. backlight modules as claimed in claim 1, it is characterised in that this substrate has a second side,
This second side is relative with this first side, and this second side is another minor face side plate of this substrate, and this base
Plate also includes the two long side plates being linked to this two minor faces side plate, and wherein this first Rhizoma Dioscoreae (peeled) and this second Rhizoma Dioscoreae (peeled) are put down
Row is in this two long sides plate.
15. backlight modules as claimed in claim 1, it is characterised in that this optical element also includes an end
Face, this first concave curved surface faces away from the direction depression of light source, wherein this first concave curved surface and this end from this end
The confluce in face is in the exiting surface place plane of light source.
16. backlight modules as claimed in claim 15, it is characterised in that this bottom surface includes multiple micro structure,
Raised or sunken from this bottom surface.
17. backlight modules as claimed in claim 15, it is characterised in that this first concave curved surface this end adjacent
Angle between tangent line and the exiting surface place plane of light source in face is less than or equal to 90 degree.
18. backlight modules as claimed in claim 15, it is characterised in that this optical element also includes one
Support member, this support member of this underrun is linked to this substrate, and wherein the height of this support member is equal to this light source
Exiting surface is to the height of this substrate.
19. backlight modules as claimed in claim 15, it is characterised in that this optical element also includes one
Support member, the width of this support member is between the 2% to 20% of the width of this bottom surface.
20. backlight modules as claimed in claim 1, it is characterised in that the normal of this second concave curved surface with
It is 90 to 180 degree that this substrate extends the angle between plane.
21. backlight modules as claimed in claim 1, it is characterised in that this optical element also includes that one is convex
Curved surface, around this second concave curved surface, this convex surface is to protrude towards the direction away from adjacent light source.
22. backlight modules as claimed in claim 21, it is characterised in that this convex surface includes:
One first light output surface, this second concave curved surface adjacent, the wherein normal of this first light output surface and this base
It is 0 to 90 degree that plate extends the angle between plane；And
One second light output surface, this first light output surface adjacent, away from the side of this second concave curved surface, wherein should
It is 0 to-90 degree that the normal of the second light output surface and this substrate extend the angle between plane.
23. backlight modules as claimed in claim 21, it is characterised in that this second concave curved surface and this is convex
Curved surface is that axial symmetry is in the line of this light source center Yu the substantial center of this optical element on a tangent plane.
24. backlight modules as claimed in claim 1, it is characterised in that the exiting surface of this light source is horizontal one
On tangent plane be axial symmetry in a symmetrical center line of this optical element, and this first concave curved surface is in this cross section
Upper shaft is symmetrical in this symmetrical center line of this optical element.
25. backlight modules as claimed in claim 1, it is characterised in that the exiting surface of this light source is horizontal one
On tangent plane be non-axis symmetry in a symmetrical center line of this optical element, and this first concave curved surface is in this cross section
On be that non-axis symmetry is in this symmetrical center line of this optical element.
26. backlight modules as claimed in claim 1, it is characterised in that this first concave curved surface is in the face of this light
The width of the opening in source is between the 100% to 150% of the width of this light source.
27. 1 kinds of display devices, including:
One backlight module, including:
One substrate, has a first side, and this first side is a minor face side plate of this substrate；
One first Rhizoma Dioscoreae (peeled) and one second Rhizoma Dioscoreae (peeled), this first Rhizoma Dioscoreae (peeled) and this second Rhizoma Dioscoreae (peeled) adjacent and be perpendicular to this
One side, this first Rhizoma Dioscoreae (peeled) and this second Rhizoma Dioscoreae (peeled) have multiple light source, including:
One first area, this first side adjacent, the light source in this first area has one first spacing；
One second area, this first area adjacent, the light source in this second area has one second spacing,
Wherein this first is smaller than this second spacing；And
Multiple optical elements, are arranged at above each described light source, entering of optical element described in each of which
Bright finish includes that one first concave curved faces away from the direction depression of light source, and the exiting surface of described optical element includes
One second concave curved surface caves in towards the direction of light source；And
One display floater, is arranged on this backlight module,
Wherein there is between this first Rhizoma Dioscoreae (peeled) and this first side one first distance, this first distance be this first
The beeline of Rhizoma Dioscoreae (peeled) and this first side, have between this second Rhizoma Dioscoreae (peeled) and this first side one second away from
From, this second distance is the beeline of this second Rhizoma Dioscoreae (peeled) and this first side, and this first distance is less than being somebody's turn to do
Second distance,
It is characterized in that, the cross section of this first concave curved surface includes that one first width and is more than this first width
The second width, wherein the long limit of the exiting surface of this light source correspond to this first width, and this light source go out light
The minor face in face corresponds to this second width.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210099579.2A CN103104858B (en) | 2011-11-15 | 2012-04-06 | Backlight module and display device |
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110391588 | 2011-11-15 | ||
| CN2011103915884 | 2011-11-15 | ||
| CN201110391588.4 | 2011-11-15 | ||
| CN201210099579.2A CN103104858B (en) | 2011-11-15 | 2012-04-06 | Backlight module and display device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103104858A CN103104858A (en) | 2013-05-15 |
| CN103104858B true CN103104858B (en) | 2016-08-31 |
Family
ID=48312935
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210099579.2A Expired - Fee Related CN103104858B (en) | 2011-11-15 | 2012-04-06 | Backlight module and display device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103104858B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015204159A (en) * | 2014-04-11 | 2015-11-16 | パナソニックＩｐマネジメント株式会社 | Led circuit board and led lighting fixture using the same |
| TWI556041B (en) * | 2015-12-11 | 2016-11-01 | 友達光電股份有限公司 | Light source module |
| CN108072997A (en) * | 2016-11-17 | 2018-05-25 | 鸿富锦精密工业（深圳）有限公司 | Down straight aphototropism mode set and liquid crystal display |
| US10824024B2 (en) * | 2018-08-23 | 2020-11-03 | Innolux Corporation | Electronic apparatus |
| US11256133B2 (en) | 2019-01-21 | 2022-02-22 | Beijing Boe Display Technology Co., Ltd. | Direct-lit backlight source and manufacturing method thereof, display device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1873503A (en) * | 2005-05-31 | 2006-12-06 | Lg.菲利浦Lcd株式会社 | Backlight assembly for liquid crystal display device and liquid crystal display device using the same |
| CN1963289A (en) * | 2005-11-11 | 2007-05-16 | 株式会社日立显示器 | Illuminating device and liquid-crystal display device using the same |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI281074B (en) * | 2005-06-27 | 2007-05-11 | Au Optronics Corp | A direct type backlight |
| US20120057097A1 (en) * | 2009-06-15 | 2012-03-08 | Sharp Kabushiki Kaisha | Lighting device, display device and television receiver |
-
2012
- 2012-04-06 CN CN201210099579.2A patent/CN103104858B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1873503A (en) * | 2005-05-31 | 2006-12-06 | Lg.菲利浦Lcd株式会社 | Backlight assembly for liquid crystal display device and liquid crystal display device using the same |
| CN1963289A (en) * | 2005-11-11 | 2007-05-16 | 株式会社日立显示器 | Illuminating device and liquid-crystal display device using the same |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103104858A (en) | 2013-05-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111983850B (en) | display device | |
| US8520150B2 (en) | Lighting device, display device and television receiver | |
| US10228589B2 (en) | Backlight unit and liquid crystal display device including the same | |
| KR101493706B1 (en) | Backlight unit for liquid crystal display device | |
| CN101196649B (en) | Display device | |
| KR101651927B1 (en) | Display Apparatus and Display Module | |
| CN103104858B (en) | Backlight module and display device | |
| US20070008740A1 (en) | Surface light source and backlight unit having the same | |
| CN203250042U (en) | Light guide plate (LGP) and liquid crystal display device | |
| US20110221785A1 (en) | Backlight unit and display apparatus including the same | |
| US20170160582A1 (en) | Wide viewing film and wide viewing tft-lcd having the same | |
| CN102866536B (en) | Liquid crystal display | |
| CN102016390A (en) | Illuminating device, display device and light guide plate | |
| US9864231B2 (en) | Backlight unit and liquid crystal display device including the same | |
| CN210514884U (en) | Light emitting diode lamp strip, backlight module and display device | |
| US20220113591A1 (en) | Diffusion plate and backlight module | |
| TW201300900A (en) | Backlight unit and display apparatus using the same | |
| CN106200114B (en) | Liquid crystal display and its back light unit with multiple display areas | |
| CN105629567A (en) | Light source module and light source unit | |
| CN107991810A (en) | Backlight and liquid crystal display | |
| KR20160051292A (en) | lens,light emitting apparatus including the lens, and backlight unit including the apparatus | |
| US10078244B2 (en) | Direct-lit type backlight source and liquid crystal television | |
| CN109870849B (en) | Backlight module and display device | |
| CN109212833B (en) | Curved surface display device | |
| KR20110054304A (en) | Backlight unit and image forming apparatus having the same |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: 518100 Longhua, Shenzhen, town, Foxconn science and Technology Industrial Park E District, building 4, building 1, building Applicant after: Qunkang Technology (Shenzhen) Co., Ltd. Applicant after: Innolux Display Group Address before: 518100 Longhua, Shenzhen, town, Foxconn science and Technology Industrial Park E District, building 4, building 1, building Applicant before: Qunkang Technology (Shenzhen) Co., Ltd. Applicant before: Chimei Optoelectronics Co., Ltd. |
|
| COR | Change of bibliographic data | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160831 Termination date: 20210406 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |