CN105116598B - A kind of backlight module, prismatic lens and television set - Google Patents
A kind of backlight module, prismatic lens and television set Download PDFInfo
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- CN105116598B CN105116598B CN201510578054.0A CN201510578054A CN105116598B CN 105116598 B CN105116598 B CN 105116598B CN 201510578054 A CN201510578054 A CN 201510578054A CN 105116598 B CN105116598 B CN 105116598B
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Classifications
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133504—Diffusing, scattering, diffracting elements
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133504—Diffusing, scattering, diffracting elements
- G02F1/133507—Films for enhancing the luminance
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
- G02F1/133607—Direct backlight including a specially adapted diffusing, scattering or light controlling members the light controlling member including light directing or refracting elements, e.g. prisms or lenses
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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Planar Illumination Modules (AREA)
Abstract
The present invention relates to a kind of display technology field more particularly to backlight module, prismatic lens and television sets.Micro-prism structure is gradually reduced from by close to sources to far from the gain effect from light source to projecting the light on the base material so that the brightness of entire display panel is more uniform.It overcomes to rely on net-pont design in the prior art and increase diaphragm quantity and the brightness uniformity of entire display panel is adjusted, the higher defect of cost of manufacture.The embodiment of the present invention provides a kind of backlight module, including：Light source；Prismatic lens, the light sent out for assembling light source, micro-prism structure on the prismatic lens includes from the strip V-groove opened up to the triangular prism micro-structure extended by close to sources and along the length direction of triangular prism micro-structure far from light source, it is formed with the triangular prism micro-structure of the first array arrangement and the triangular prism micro-structure arranged with the second array, it is equal with the cross section apex angle of triangular prism micro-structure arranged with the second array with the triangular prism micro-structure of the first array arrangement.
Description
Technical field
The present invention relates to a kind of display technology field more particularly to backlight module, prismatic lens and television sets.
Background technology
With the continuous renewal of display, liquid crystal display due to have the characteristics that light, thin, small and power consumption is low and by
To the favor of people, liquid crystal display panel itself does not shine, and in order to realize the menu display function of liquid crystal display panel, needs
Backlight module is arranged to provide light source in the rear of liquid crystal display panel.
Existing backlight module generally includes：Optical diaphragm (prismatic lens, upper diffusion barrier, lower diffusion barrier), light guide plate, reflection
Plate and light source, the light that light source is sent out, to light guide plate, lower diffusion barrier are emitted to from light guide plate upper surface by baffle reflection, it
By upper diffusion sheet is incident upon after prismatic lens refraction convergence, it is emitted from liquid crystal display panel after the scattering of upper diffusion sheet.
Wherein, prismatic lens are also known as brightness enhancement film, and effect is the inclined-plane using the prism structure being formed on substrate material
The emergent light in a certain angular range from lower diffusion barrier is set to deflect to positive direction outgoing, in this way, the light that light source is sent out
It is constantly recycled under the action of prism structure, the light dissipated originally to all directions is controlled after by prismatic lens
In positive view directions, to achieve the effect that axial brightness enhances.
Currently, backlight module is according to entering light mode difference and be divided into side to enter two kinds of light and straight-down negative, whether side enter light or
Down straight aphototropism mode set is when for various display panels, since light source is different at a distance from everywhere with the light-emitting surface of backlight module,
Outgoing brightness unevenness will be led to the problem of.Wherein, injection type backlight module in side usually relies on what light guide plate sent out light source
Light beam is oriented to, and increases net-pont design on the light guide plate to adjust the brightness of backlight module light-emitting surface everywhere, but this
Sample can directly contribute cost increase and technology is limited, and down straight aphototropism mode set is usually carried by increasing the quantity of optical diaphragm
The mist degree of high emergent ray influences the using effect of user in this way, the brightness of liquid crystal display can significantly be sacrificed.
Invention content
It is a primary object of the present invention to provide a kind of backlight module, prismatic lens and television set, wherein micro- rib
Mirror structure is gradually reduced from far from light source to the gain effect from close to sources to projecting the light on the base material, Neng Gouti
The brightness uniformity for rising emergent ray, is adjusted so as to the brightness uniformity to display panel, is set not against site
It counts and the brightness uniformity between each position of entire display panel can be carried out in the case of increasing diaphragm quantity
Corresponding to adjust, cost of manufacture is relatively low.
In order to achieve the above objectives, the present invention adopts the following technical scheme that：
On the one hand, the embodiment of the present invention provides a kind of backlight module, including：
Light source；
Prismatic lens, the prismatic lens include base material and are arranged in institute for assembling the light that light source is sent out, the prismatic lens
State the micro-prism structure on base material, the micro-prism structure include from far from light source to the micro- knot of triangular prism extended by close to sources
Structure, and along the strip V-groove that opens up of length direction of the triangular prism micro-structure, before the strip V-groove is far from light source
Edge point is in glut shape, and the triangular prism micro-structure is separated into far from the micro- knot of the triangular prism with the first array arrangement at light source
Structure and the triangular prism micro-structure arranged with the second array at close to sources, wherein the trigone with the first array arrangement
Column micro-structure is equal with the cross section apex angle of triangular prism micro-structure with the second array arrangement, described with the first array arrangement
The bottom edge length of cross section of triangular prism micro-structure be more than the cross section of the triangular prism micro-structure with the second array arrangement
Bottom edge length.
Optionally, the cross section apex angle of the triangular prism micro-structure with the first array arrangement be 80-100 degree, it is described with
The cross section apex angle of the triangular prism micro-structure of the second array arrangement is 80-100 degree.
Further, the cross section apex angle of the triangular prism micro-structure with the first array arrangement is 90 degree, described with the
The cross section apex angle of the triangular prism micro-structure of two array arrangements is 90 degree.
Preferably, described to be arranged with the second array along the width direction of the triangular prism micro-structure with the second array arrangement
The triangular prism micro-structure of cloth is closer from the light source, and the bottom edge length of cross section is smaller.
Optionally, it is described using the second array arrangement triangular prism micro-structure in the main cross section shape at close to sources as isosceles
Triangle, the main cross section shape using the triangular prism micro-structure of the first array arrangement at separate light source is isosceles triangle.
Optionally, the bottom edge length of the isosceles triangle is 15-60 μm.
Preferably, the triangular prism micro-structure with the first array arrangement and the triangular prism micro-structure arranged with the second array
Crest line it is curved in the projection of vertical direction.
Optionally, the lower section in the prismatic lens side or middle part is arranged in the light source.
On the other hand, the embodiment of the present invention provides a kind of prismatic lens, and the prismatic lens are prismatic lens described above.
In another aspect, the embodiment of the present invention provides a kind of television set, the television set includes backlight module described above.
The embodiment of the present invention provides a kind of backlight module, prismatic lens and television set, wherein by be arranged on base material from
Far from light source to the triangular prism micro-structure extended by close to sources, and the micro- knot of triangular prism described in the triangular prism micro-structure upper edge
The length direction of structure opens up strip V-groove, and the strip V-groove is in glut shape far from the leading edge portion at light source, and described three
Prism microstructures are divided into from far from micro- to the triangular prism with the first array arrangement arranged successively at close to sources from light source
Structure and the triangular prism micro-structure arranged with the second array so that the rib peak of the triangular prism micro-structure with the second array arrangement
Height is less than the rib peak heights of the triangular prism micro-structure with the first array arrangement, due to described with the three of the first array arrangement
The bottom edge length of the cross section of prism microstructures is more than the bottom of the cross section of the triangular prism micro-structure with the second array arrangement
Edge lengths, and the cross section apex angle of the triangular prism micro-structure with the first array arrangement and three to be arranged with the second array
The cross section apex angle of prism microstructures is equal, in this way, the triangular prism micro-structure with the first array arrangement is to emergent ray
Gain is larger so that is increased far from the emergent ray brightness at light source, the micro- knot of triangular prism arranged with the second array
Structure is smaller to the gain of emergent ray so that the emergent ray luminance gain at close to sources is smaller, the direct effect being achieved in that
Fruit is：The emergent ray brightness of the micro-prism structure is more uniform.Diaphragm quantity is not being increased not against net-pont design and
In the case of the brightness uniformity between each position of entire display panel can be adjusted accordingly, cost of manufacture compared with
It is low.It overcomes and relies on net-pont design cost higher when brightness uniformity is adjusted in the prior art, and pass through increase
Diaphragm quantity adjusts the brightness uniformity of display panel so that the defect that overall brightness reduces.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, embodiment will be described below
Needed in attached drawing be briefly described, it should be apparent that, the accompanying drawings in the following description be only the present invention some
Embodiment for those of ordinary skill in the art without creative efforts, can also be attached according to these
Figure obtains other attached drawings.
Fig. 1 is a kind of structural schematic diagram of backlight module provided in an embodiment of the present invention；
Fig. 2 is a kind of relevant parameter schematic diagram of micro-prism structure provided in an embodiment of the present invention；
Fig. 3 is refraction situation point of the triangular prism micro-structure to light of two kinds of structural parameters provided in an embodiment of the present invention
Analysis；
Fig. 4 is a kind of structural schematic diagram of prismatic lens provided in an embodiment of the present invention；
Fig. 5 is a kind of structural schematic diagram of side injection type backlight module provided in an embodiment of the present invention；
Fig. 6 is the structural schematic diagram of another side injection type backlight module provided in an embodiment of the present invention；
Fig. 7 is a kind of structural schematic diagram of down straight aphototropism mode set provided in an embodiment of the present invention.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that, term "center", "upper", "lower", "front", "rear", " left side ",
The orientation or positional relationship of the instructions such as " right side ", "vertical", "horizontal", "top", "bottom", "inner", "outside" is based on ... shown in the drawings
Orientation or positional relationship is merely for convenience of description of the present invention and simplification of the description, do not indicate or imply the indicated device or
Element must have a particular orientation, with specific azimuth configuration and operation, therefore be not considered as limiting the invention.
In description of the invention, unless otherwise indicated, the meaning of " plurality " is two or more.
It is a kind of structural schematic diagram of backlight module provided in an embodiment of the present invention referring to Fig. 1, including：
Light source 1；
Prismatic lens 2, the prismatic lens 2 include base material 21 and set for assembling the light that light source 1 is sent out, the prismatic lens 2
Set the micro-prism structure 22 on the base material 21, the micro-prism structure include from far from light source to three extended by close to sources
Prism microstructures 3, and along the strip V-groove 31 that opens up of length direction of the triangular prism micro-structure 3, the strip V-groove
31 leading edge portions far from light source 1 are in glut shape, by the triangular prism micro-structure 3 be separated into far from light source with the first array
The triangular prism micro-structure 32 of arrangement and the triangular prism micro-structure 33 arranged with the second array at close to sources, wherein described
It is pushed up with the triangular prism micro-structure 32 of the first array arrangement and the cross section of the triangular prism micro-structure 33 with the second array arrangement
Angle is equal, and the bottom edge length of the cross section of the triangular prism micro-structure 32 with the first array arrangement is more than described with the second array
The bottom edge length of the cross section of the triangular prism micro-structure 33 of arrangement.
Wherein, it should be noted that referring to Fig. 2, in embodiments of the present invention, the triangular prism with the first array arrangement
Micro-structure 32 includes mainly following parameter with the triangular prism micro-structure 33 with the second array arrangement：The each apex angle in cross section
Angle, the bottom edge length D and height of cross section.Wherein, with the cross section of the triangular prism micro-structure 32 of the first array arrangement with
Cross section with the triangular prism micro-structure 33 of the second array arrangement is triangle, illustratively, the angle of apex angle as shown in Figure 2
Spend the angle that α is the cross section apex angle of the triangular prism micro-structure 32 with the first array arrangement, and then β is then described with the
The angle of the cross section apex angle of the triangular prism micro-structure 33 of two array arrangements, the bottom edge length of cross section refer to the bottom edge of triangle
Length, illustratively, D1 as shown in Figure 2 are the bottom of the cross section of the triangular prism micro-structure 32 with the first array arrangement
Edge lengths, D2 are then the bottom edge length of the cross section for the triangular prism micro-structure 33 arranged with the second array.
Referring to Fig. 2 and Fig. 3, when the bottom edge length of the cross section of the triangular prism micro-structure is different, and the triangular prism
When the cross section apex angle of micro-structure is equal, the height of the triangular prism micro-structure is inevitable different, and according to triangular prism micro-structure
Refraction principle, illustratively, referring to Fig. 3, the equal triangular prism micro-structure of two cross section apex angles, one of micro- knot of triangular prism
The bottom edge length of the cross section of structure is less than the bottom edge length of the cross section of another triangular prism micro-structure, the bottom of corresponding cross section
The height of the small triangular prism micro-structure of edge lengths is relatively small, for convenience, by the different trigone of the two structural parameters
The small triangular prism micro-structure A for being known as first structure parameter of the bottom edge length of cross section in column micro-structure, by the bottom edge of cross section
The relatively large triangular prism micro-structure B for being known as the second structural parameters of length, in this way, when light l is incident at an angle,
It is definite value n, then 2/ θ 1=θ of θ, 4/ θ 3=n, the triangular prism micro-structure B energy of second structural parameters according to the refractive index of prismatic lens
It is enough to refract to the light l in positive apparent direction, and the triangular prism micro-structure A of the first structure parameter can not be by the light
Line l refracts to positive apparent direction, to cause to be lost, in this way, the triangular prism micro-structure A of first structure parameter is relative to described second
The gain of the triangular prism micro-structure B of structural parameters is smaller, it is possible thereby to learn：By the way that the micro- knot of Different structural parameters triangular prism is arranged
Structure, i.e., according in backlight module the distance of light source 1 structural parameters of triangular prism micro-structure are finely adjusted so that far from light
Emergent ray gain at source 1 is larger, and the emergent ray gain at close to sources is smaller, so that entire display panel is bright
Degree is more uniform.
The embodiment of the present invention provides a kind of backlight module, wherein by be arranged on base material 21 from far from light source 1 to close
The triangular prism micro-structure 3 that light source 1 extends, and the length side of the triangular prism micro-structure described in 3 upper edge of the triangular prism micro-structure
To opening up strip V-groove 31, and the strip V-groove 31 is in glut shape far from the leading edge portion at light source, and the triangular prism is micro-
Structure 3 is divided into from separate light source 1 to the triangular prism micro-structure with the first array arrangement arranged successively at close to sources 1
32 and with the second array arrange triangular prism micro-structure 33 so that it is described with the second array arrangement triangular prism micro-structure 33 rib
Peak heights are less than the rib peak heights of the triangular prism micro-structure 32 with the first array arrangement, due to described with the first array arrangement
The bottom edge length of cross section of triangular prism micro-structure 32 be more than the cross of the triangular prism micro-structure 33 with the second array arrangement
The bottom edge length in section, and the cross section apex angle of the triangular prism micro-structure 32 with the first array arrangement with it is described with second gust
The cross section apex angle for arranging the triangular prism micro-structure 33 of arrangement is equal, therefore, the triangular prism micro-structure with the first array arrangement
32 and with the relationship of triangular prism micro-structure 33 and the micro-prism structure B of the second structural parameters and the first structure of the second array arrangement
The relationship of the micro-prism structure A of parameter is similar, in this way, the triangular prism micro-structure 32 with the first array arrangement is to emergent ray
Gain it is larger so that increased far from the emergent ray brightness at light source 1, the triangular prism with the second array arrangement is micro-
Structure 33 is smaller to the gain of emergent ray so that the emergent ray luminance gain at close to sources 1 is smaller, and what is be achieved in that is straight
Connecing effect is：The emergent ray brightness of the micro-prism structure 22 is more uniform.Film is not being increased not against net-pont design and
The brightness uniformity between each position of entire display panel can be adjusted accordingly, be made in the case of piece quantity
Cost is relatively low.Overcome higher by net-pont design cost when brightness uniformity is adjusted in the prior art, Yi Jitong
It crosses and increases the brightness uniformity that diaphragm quantity adjusts display panel so that the defect that overall brightness reduces.
Wherein, the base material 21 of the prismatic lens 2 can be made of transparent resin material, such as PET (poly terephthalic acid second two
Ester) or PC (makrolon), micro-prism structure 22 can be made of PMMA (polymethyl methacrylate), certainly, be only herein
For example, not representing, the present invention is limited to this.
Wherein, the specific generation type of the micro-prism structure 22 is not limited, it is described with the three of the first array arrangement
Prism microstructures 32 and the triangular prism micro-structure 33 arranged with the second array can be to be process by mold, or note
It is moulded into type.
Wherein, to described with the triangular prism micro-structure 32 of the first array arrangement and the micro- knot of triangular prism arranged with the second array
The cross section apex angle of structure 33 does not limit, it is preferred that pushes up the cross section of the triangular prism micro-structure 32 with the first array arrangement
Angle is 80-100 degree, and the cross section apex angle of the triangular prism micro-structure 33 with the second array arrangement is 80-100 degree.Using this
Structure, in the case where not considering gain effect of the micro-prism structure 22 to different zones light, when the prismatic lens 2 exist
When being reflected for the light to certain brightness, the light utilization being incident on the prismatic lens 2, maximum journey can be improved
Fiber-loss is reduced on degree.
It is further preferred that the cross section apex angle of the triangular prism micro-structure 32 with the first array arrangement is 90 degree, institute
The cross section apex angle for stating the triangular prism micro-structure 33 arranged with the second array is 90 degree.
Wherein, to the triangular prism micro-structure 32 of the first array arrangement and the triangular prism micro-structure 33 arranged with the second array
Cross section apex angle it is specific setting do not limit, the cross section apex angle can be acute angle, or fillet.Preferably,
It is with the triangular prism micro-structure 32 of the first array arrangement and with the cross section apex angle of the triangular prism micro-structure 33 of the second array arrangement
Fillet.Using this structure so that the light of the left and right sides is dissipated to the both sides of triangular prism micro-structure described in each, to improve
The luminance viewing angle of left and right directions.
Wherein, it should be noted that when light source is point light source, the triangular prism arranged with the second array at close to sources
Micro-structure 33 along it is described with the second array arrangement triangular prism micro-structure 33 width direction from light source 1 distance can also exist it is poor
It is different.In a preferred embodiment of the present invention, referring to Fig. 5, along the width of the triangular prism micro-structure 33 with the second array arrangement
Direction, the triangular prism micro-structure 33 with the second array arrangement are closer from the light source 1, and the bottom edge length of cross section is smaller.
It, can be further according to far and near to the triangular prism micro-structure 33 with the second array arrangement apart from light source 1 using this structure
Structural parameters are adjusted so that the brightness of emergent ray is more uniformly distributed.
Specifically, the number to the triangular prism micro-structure 3 does not limit, the triangular prism micro-structure 3 can be one
Or it is multiple, the concrete structure of the strip V-groove 31 to being opened up on the triangular prism micro-structure 3 does not limit, for example, working as
When the triangular prism micro-structure 3 is one, the strip V-groove 31 can be the length for being opened in the triangular prism micro-structure 3
Direction it is one or more of, when the strip V-groove 31 be it is a plurality of when, a plurality of strip V-groove 31 can arrange successively,
Referring to Fig. 4, the micro-prism structure 22 includes triangular prism micro-structure 3 and is opened along the length direction of the triangular prism micro-structure 3
If three strip V-grooves 31, by the triangular prism micro-structure 3 be separated into the triangular prism micro-structure 32 of the first array arrangement with
With the triangular prism micro-structure 33 that the second array is arranged, the bottom of the cross section of the triangular prism micro-structure 33 with the second array arrangement
Edge lengths can be realized by opening up the strip V-groove 31 of different item numbers.It is conceivable that when the triangular prism micro-structure 3 is
When multiple, the strip V-shaped groove 31 of different item numbers can be opened up respectively on different triangular prism micro-structures 3, for example, can be more
Three strip V-grooves 31 are opened up on each triangular prism micro-structure 3 of close to sources 1, each triangular prism for being relatively distant from light source 1 is micro-
A strip V-groove 31 is opened up in structure 3, in this way, closer from light source 1 in the embodiment of the present invention, the bottom edge of cross section can be obtained
The smaller triangular prism micro-structure 33 arranged with the second array of length.
Wherein, it in order to enable the triangular prism micro-structure 3 has certain regularity, and in order to enable makes molding
There is certain rule with the triangular prism micro-structure 33 of the second array arrangement with the triangular prism micro-structure 32 of the first array arrangement
Property, it is easy to process in the production process.Preferably, the triangular prism micro-structure 33 with the second array arrangement is by close to sources 1
The main cross section shape at place is isosceles triangle, and the triangular prism micro-structure 32 with the first array arrangement is at far from light source 1
Main cross section shape is isosceles triangle.
Wherein, the bottom edge length of the isosceles triangle is not limited, the backlight module is being used for different productions
It when product, can be determined according to the size of product, for example, if the backlight module to be used for the production of small-medium size
When product, the bottom edge length of the isosceles triangle is usually at 10-40 μm.
In one embodiment of the invention, the bottom edge length of the isosceles triangle is 15-60 μm.Using this structure, obtained
Large-sized product has preferable effect during the prismatic lens 2 obtained are used for.
Wherein, it should be noted that due to the triangular prism micro-structure 32 with the first array arrangement and with the second array
The height of the triangular prism micro-structure 33 of arrangement differs, from far from the triangular prism micro-structure 32 with the first array arrangement from light source 1
It is gradually lower to the rib peak of the triangular prism micro-structure 33 arranged with the second array at close to sources 1, it is therefore, described with first gust
The triangular prism micro-structure 32 for arranging arrangement is moved towards with the rib peak of the triangular prism micro-structure 33 of the second array arrangement in the triangular prism
It is curved in the short transverse of micro-structure 3.
It is described to be arranged with the second array with the triangular prism micro-structure 32 of the first array arrangement in one embodiment of the invention
Triangular prism micro-structure 33 crest line it is curved in the projection of vertical direction.Using this structure, relative to described with the first array
The triangular prism micro-structure 32 of arrangement and the crest line for the triangular prism micro-structure 33 arranged with the second array are in the projection of vertical direction
Straight line can be deviateed with the orientation of pixel in liquid crystal display panel, be avoided described micro- with the triangular prism of the first array arrangement
Structure 32 and the pixel arrangement side in the arragement direction and liquid crystal display panel of the triangular prism micro-structure 33 arranged with the second array
To moire phenomenon caused by tending to be parallel, to influence the display quality of liquid crystal display panel.
Wherein, the position of the light source 1 is not limited, it is different according to light direction is entered in existing backlight module, it is main
To include two kinds of side entrance back module and down straight aphototropism mode set, illustratively, the light source 1 is arranged in the prismatic lens 2
The lower section at side or middle part.
Specifically, referring to Fig. 5, the prismatic lens 2 include the first side a and the second side b being oppositely arranged, when the light source 1
It is arranged at the lower section of the first side a, the micro-prism structure 22 includes extending from the second side b to the first side a
Triangular prism micro-structure 3 and the strip V-groove 31 that opens up of length direction along the triangular prism micro-structure 3, the strip V-type
Leading edge portion of the slot 31 at the second side a is in glut shape, and the triangular prism micro-structure 3 is separated into close to the second side
With the triangular prism of the second array arrangement at the triangular prism micro-structure 32 and close first side a with the first array arrangement at b
Micro-structure 33.Using this structure, when the light that light source 1 is sent out projects on the base material 21 of the prismatic lens 2, due to light source 1
Positioned at the lower section of the first side a, therefore, project light luminance on the base material 21 of the prismatic lens 2 from by close to sources 1 i.e.
First side a is tapered at far from light source 1 i.e. the second side b, and the micro-prism structure 22 of this structure is to projecting the base material
Light on 21 is gradually reduced from far from gain effect of the light source 1 to from by close to sources 1, in this way so that at light source 1 with
The triangular prism micro-structure 33 of the second array arrangement is lost larger when being converged to the stronger light of brightness, and gain is smaller, and
Far from the triangular prism micro-structure 32 with the first array arrangement at light source 1 be lost when the light weaker to brightness converges compared with
Small, gain is larger, so that the brightness at the entire each position of display panel is more uniform.
Wherein, it should be noted that the specific size of the light source 1 is not limited, when the light source 1 be linear light source,
And it is arranged in the lower section of the first side a and corresponding with the first side a, when the light source 1 is point light source or the light
Source 1 is the linear light source that size is less than the first side a, and when the linear light source is located at the side of the first side a, described with the
The bottom edge length of the cross section of the triangular prism micro-structure 33 of two array arrangements can be accordingly adjusted so that the first side a
Gain effect at close to sources is smaller, larger far from the gain effect at light source.
Illustratively, referring to Fig. 6, the prismatic lens 2 further include respectively adjacent with the first side a and the second side b
Three side c and the 4th side d, the third side c and the 4th side d are oppositely arranged, when the light source 1 is arranged close to the third side c,
The bottom edge length of the cross section for the triangular prism micro-structure 33 arrange with the second array close to the third side c is less than close described the
The bottom edge length of the cross section for the triangular prism micro-structure 33 that four side d are arranged with the second array.
Specifically, referring to Fig. 7, when the light source 1 is arranged in the lower section at 2 middle part of prismatic lens, the micro-prism structure 22
Include the triangular prism micro-structure 3 extended from two side of the prismatic lens to the middle part and the length along the triangular prism micro-structure 3
The strip V-groove 31 that degree direction opens up, leading edge portion of the strip V-groove 31 at the first side a and the second side b is in point
The triangular prism micro-structure 3 is separated at the first side a and the second side b with the trigone of the first array arrangement by wedge shape
Column micro-structure 32, and the triangular prism micro-structure 33 arranged with the second array close to the center.Using this structure, when light source 1
When the light sent out is projected on the base material 21 of the prismatic lens 2, since light source 1 is located at the lower section at the middle part, projection
Light luminance on to the base material 21 of the prismatic lens 2 is from being center to far from light source 1 first side a and second by close to sources 1
Side b is tapered into, and the micro-prism structure 22 of this structure to project the light on the base material 21 from far from light source 1 to close
Gain effect at light source 1 is gradually reduced, in this way so that the triangular prism micro-structure arranged with the second array at light source 1
33 are lost larger when being converged to the stronger light of brightness, and gain is smaller, and far from light source 1 with the first array arrangement
Triangular prism micro-structure 32 be lost when the light weaker to brightness converges smaller, gain is larger, so that entire aobvious
Show that the brightness at each position of panel is more uniform.
Wherein, similar with side injection type backlight module, when the light source 1 is point light source or the light source 1 is size
Less than the linear light source at the middle part, and when the linear light source is located at the middle part close to third side c or the 4th side d, it is described with
The bottom edge length of the cross section of the triangular prism micro-structure 33 of the second array arrangement can be accordingly adjusted so that the middle part
Gain effect is smaller, larger far from the gain effect at light source 1.
Illustratively, it when the light source 1 is arranged close to the third side c, is arranged with the second array close to the third side c
The bottom edge length of the cross section of the triangular prism micro-structure 33 of cloth is less than the triangular prism arranged with the second array close to the 4th side d
The bottom edge length of the cross section of micro-structure 33.
Wherein, it should be noted that with the increasingly rising of curved face product, due to the special design feature of curved face product,
When side injection type backlight module and down straight aphototropism mode set are used for curved face product, the problem of brightness disproportionation, becomes apparent, and shows
Example property, when the down straight aphototropism mode set is applied to curved face product, the prismatic lens 2 in two such as Fig. 6 can be set, and
And arranged with orthogonal form, in this way, the triangular prism micro-structure 33 with the second array arrangement at i.e. middle part exists at close to sources 1
It is lost larger when being converged to the stronger light of brightness, gain is smaller, and far from i.e. the first side a at light source 1, the second side b, the
The triangular prism micro-structure 32 with the first array arrangement of three side c and the 4th side d is when the light weaker to brightness converges
Loss is smaller, and gain is larger, enables to the lateral luminance of curved face product to tend to be uniform with front face brightness, overcomes the prior art
Mean camber product side is shaded, and limited defect is developed.
Likewise, when side injection type backlight module is applied to curved face product, it can also be by being rationally arranged as in Fig. 4
Prismatic lens 2 so that the fiber-loss at the close to sources 1 is larger, smaller far from the fiber-loss at light source 1, so that bent
The lateral luminance of face product tends to be uniform with front face brightness, specifically can according to the curved face product to the brightness at each position come
Rationally it is arranged.
Other compositions of backlight module about the embodiment of the present invention etc. have been well known to those skilled in the art, herein
No longer it is described in detail.
On the other hand, the embodiment of the present invention provides a kind of prismatic lens, and the prismatic lens are prismatic lens described above.
The embodiment of the present invention provides a kind of prismatic lens, wherein by being arranged on base material from separate light source to by close to sources
The triangular prism micro-structure of extension, and the length direction of triangular prism micro-structure described in the triangular prism micro-structure upper edge opens up item
Shape V-groove, and the strip V-groove is in glut shape far from the leading edge portion at light source, the triangular prism micro-structure is divided into
From far from from light source to being arranged at close to sources with the triangular prism micro-structure of the first array arrangement and arranged with the second array successively
The triangular prism micro-structure of cloth so that the rib peak heights of the triangular prism micro-structure with the second array arrangement are less than described with first
The rib peak heights of the triangular prism micro-structure of array arrangement, due to the cross section of the triangular prism micro-structure with the first array arrangement
Bottom edge length be more than the triangular prism micro-structure with the second array arrangement cross section bottom edge length, and it is described with first
The cross section of the cross section apex angle of the triangular prism micro-structure of array arrangement and the triangular prism micro-structure with the second array arrangement
Apex angle is equal, therefore, described with the triangular prism micro-structure of the first array arrangement and the triangular prism micro-structure arranged with the second array
Relationship it is similar with the relationship of the micro-prism structure of the second structural parameters and the micro-prism structure of first structure parameter, in this way, institute
It states larger to the gain of emergent ray with the triangular prism micro-structure of the first array arrangement so that bright far from the emergent ray at light source
Degree is increased, and the triangular prism micro-structure with the second array arrangement is smaller to the gain of emergent ray so that leans on close to sources
The emergent ray luminance gain at place is smaller, and the direct effect being achieved in that is：The emergent ray brightness of the micro-prism structure compared with
It is uniform.Can be to each position of entire display panel not against net-pont design and in the case of increasing diaphragm quantity
Between brightness uniformity adjusted accordingly, cost of manufacture is relatively low.Overcome in the prior art to brightness uniformity into
It is higher by net-pont design cost when row is adjusted, and the brightness uniformity by increasing diaphragm quantity adjusting display panel, make
Obtain the defect that overall brightness reduces.
In another aspect, the embodiment of the present invention provides a kind of television set, the television set includes backlight mould as described above
Group.
The embodiment of the present invention provides a kind of television set, wherein when backlight module described above is used for television set, leads to
It crosses and is arranged on the base material of prismatic lens from separate light source to the triangular prism micro-structure extended by close to sources, and in the triangular prism
The length direction of triangular prism micro-structure described in micro-structure upper edge opens up strip V-groove, and the strip V-groove far from light source at
Leading edge portion is in glut shape, the triangular prism micro-structure be divided into from far from from light source to arrange successively at close to sources with
The triangular prism micro-structure of first array arrangement and the triangular prism micro-structure arranged with the second array so that described to be arranged with the second array
The rib peak heights of the triangular prism micro-structure of cloth are less than the rib peak heights of the triangular prism micro-structure with the first array arrangement, due to
The bottom edge length of the cross section of the triangular prism micro-structure with the first array arrangement is more than described with the three of the second array arrangement
The bottom edge length of the cross section of prism microstructures, and the cross section apex angle of the triangular prism micro-structure with the first array arrangement with
The cross section apex angle of the triangular prism micro-structure with the second array arrangement is equal, in this way, described with the three of the first array arrangement
Prism microstructures are larger to the gain of emergent ray so that increased far from the emergent ray brightness at light source, it is described with the
The triangular prism micro-structure of two array arrangements is smaller to the gain of emergent ray so that the emergent ray luminance gain at close to sources
Smaller, the direct effect being achieved in that is：Emergent ray brightness after micro-prism structure refraction is more uniform；Not
It can be to the brightness between each position of entire display panel by net-pont design and in the case of increasing diaphragm quantity
Uniformity is adjusted accordingly, and cost of manufacture is relatively low.Overcome in the prior art when brightness uniformity is adjusted according to
It is higher by net-pont design cost, and the brightness uniformity by increasing diaphragm quantity adjusting display panel so that overall brightness
The defect of reduction.
Wherein, the television set can be LCD TV, LED television, plasm TV etc..
Other compositions of television set about the embodiment of the present invention etc. have been well known to those skilled in the art, herein not
It is described in detail again.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all contain
Lid is within protection scope of the present invention.Therefore, protection scope of the present invention should be based on the protection scope of the described claims.
Claims (10)
1. a kind of backlight module, which is characterized in that including：
Light source；
Prismatic lens, the prismatic lens include base material and are arranged in the base for assembling the light that light source is sent out, the prismatic lens
Micro-prism structure on material, the micro-prism structure include from far from light source to the triangular prism micro-structure extended by close to sources, with
And the strip V-groove that opens up of length direction along the triangular prism micro-structure, the leading edge portion of the strip V-groove far from light source
In glut shape, by the triangular prism micro-structure be separated into far from light source with the triangular prism micro-structure of the first array arrangement and
The triangular prism micro-structure arranged with the second array at close to sources, wherein the micro- knot of the triangular prism with the first array arrangement
Structure is equal with the cross section apex angle of triangular prism micro-structure with the second array arrangement, the trigone with the first array arrangement
The bottom edge length of the cross section of column micro-structure is more than the bottom edge of the cross section of the triangular prism micro-structure with the second array arrangement
Length.
2. backlight module according to claim 1, which is characterized in that the triangular prism micro-structure with the first array arrangement
Cross section apex angle be 80-100 degree, the cross section apex angle of triangular prism micro-structure with the second array arrangement is 80-100
Degree.
3. backlight module according to claim 2, which is characterized in that the triangular prism micro-structure with the first array arrangement
Cross section apex angle be 90 degree, it is described with the second array arrangement triangular prism micro-structure cross section apex angle be 90 degree.
4. backlight module according to claim 1, which is characterized in that along the micro- knot of triangular prism arranged with the second array
The width direction of structure, the triangular prism micro-structure with the second array arrangement are closer from the light source, the cross of triangular prism micro-structure
The bottom edge length in section is smaller.
5. backlight module according to claim 1, which is characterized in that the triangular prism micro-structure arranged with the second array
It is isosceles triangle in the main cross section shape at close to sources, the triangular prism micro-structure with the first array arrangement is far from light
Main cross section shape at source is isosceles triangle.
6. backlight module according to claim 5, which is characterized in that the bottom edge length of the isosceles triangle is 15-60 μ
m。
7. backlight module according to claim 2, which is characterized in that the triangular prism micro-structure with the first array arrangement
It is curved in the projection of vertical direction with the crest line for the triangular prism micro-structure arranged with the second array.
8. according to claim 1-7 any one of them backlight modules, which is characterized in that the light source is arranged in the prismatic lens
The lower section at side or middle part.
9. a kind of prismatic lens, which is characterized in that the prismatic lens are such as claim 1-8 any one of them prismatic lens.
10. a kind of television set, which is characterized in that the television set includes such as claim 1-8 any one of them backlight modules.
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| CN201510578054.0A CN105116598B (en) | 2015-09-11 | 2015-09-11 | A kind of backlight module, prismatic lens and television set |
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| CN201510578054.0A CN105116598B (en) | 2015-09-11 | 2015-09-11 | A kind of backlight module, prismatic lens and television set |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107013827A (en) * | 2016-12-29 | 2017-08-04 | 中山市光大光学仪器有限公司 | Anti-dazzle lighting apparatus |
| CN110133910A (en) * | 2019-04-25 | 2019-08-16 | 昆山龙腾光电有限公司 | Concentration module, backlight module and display device |
| JP7562988B2 (en) * | 2020-05-11 | 2024-10-08 | 船井電機株式会社 | Surface light source device, display device, and method for manufacturing optical sheet |
| CN116125704A (en) * | 2022-12-29 | 2023-05-16 | 惠州华星光电显示有限公司 | Prism sheet and display module |
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Address after: 266100 Zhuzhou Road, Laoshan District, Shandong, No. 151, No. Patentee after: Hisense Visual Technology Co., Ltd. Address before: 266100 Zhuzhou Road, Laoshan District, Shandong, No. 151, No. Patentee before: QINGDAO HISENSE ELECTRONICS Co.,Ltd. |
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