CN105278159A - Light source module - Google Patents
Light source module Download PDFInfo
- Publication number
- CN105278159A CN105278159A CN201510716868.6A CN201510716868A CN105278159A CN 105278159 A CN105278159 A CN 105278159A CN 201510716868 A CN201510716868 A CN 201510716868A CN 105278159 A CN105278159 A CN 105278159A
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- China
- Prior art keywords
- light source
- blooming
- poriness
- hole
- source module
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- 239000012788 optical film Substances 0.000 claims abstract description 25
- 238000009792 diffusion process Methods 0.000 claims abstract description 9
- 239000011247 coating layer Substances 0.000 claims description 44
- 239000000463 material Substances 0.000 claims description 29
- 239000002096 quantum dot Substances 0.000 claims description 6
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 4
- 239000003595 mist Substances 0.000 claims description 4
- 238000007788 roughening Methods 0.000 claims description 3
- 230000009466 transformation Effects 0.000 claims description 3
- 230000004075 alteration Effects 0.000 abstract description 14
- 239000004973 liquid crystal related substance Substances 0.000 abstract description 6
- 238000006243 chemical reaction Methods 0.000 abstract 2
- 230000002093 peripheral effect Effects 0.000 abstract 2
- 239000010408 film Substances 0.000 description 4
- 239000010410 layer Substances 0.000 description 4
- 230000007423 decrease Effects 0.000 description 3
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- XECAHXYUAAWDEL-UHFFFAOYSA-N acrylonitrile butadiene styrene Chemical compound C=CC=C.C=CC#N.C=CC1=CC=CC=C1 XECAHXYUAAWDEL-UHFFFAOYSA-N 0.000 description 2
- UHYPYGJEEGLRJD-UHFFFAOYSA-N cadmium(2+);selenium(2-) Chemical compound [Se-2].[Cd+2] UHYPYGJEEGLRJD-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000009977 dual effect Effects 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 2
- 239000004417 polycarbonate Substances 0.000 description 2
- 229920000515 polycarbonate Polymers 0.000 description 2
- 229920000139 polyethylene terephthalate Polymers 0.000 description 2
- 239000005020 polyethylene terephthalate Substances 0.000 description 2
- 239000004926 polymethyl methacrylate Substances 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 229910010413 TiO 2 Inorganic materials 0.000 description 1
- 239000005083 Zinc sulfide Substances 0.000 description 1
- 239000004676 acrylonitrile butadiene styrene Substances 0.000 description 1
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000007323 disproportionation reaction Methods 0.000 description 1
- 208000002173 dizziness Diseases 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- -1 polyethylene terephthalate Polymers 0.000 description 1
- 238000002310 reflectometry Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 230000001131 transforming effect Effects 0.000 description 1
- UQMZPFKLYHOJDL-UHFFFAOYSA-N zinc;cadmium(2+);disulfide Chemical compound [S-2].[S-2].[Zn+2].[Cd+2] UQMZPFKLYHOJDL-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133611—Direct backlight including means for improving the brightness uniformity
-
- 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
Landscapes
- 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)
- Liquid Crystal (AREA)
- Optical Elements Other Than Lenses (AREA)
Abstract
The invention discloses a light source module, which comprises a light source, a diffusion plate, a wavelength conversion optical film and a porous optical film. The diffusion plate is positioned above the light source, and the wavelength conversion optical film is positioned above the diffusion plate. The porous optical film is positioned between the light source and the diffusion plate, wherein the porous optical film is provided with a central area and a peripheral area positioned around the central area. The central area is arranged corresponding to the light source, wherein the central area is provided with a plurality of first holes. The peripheral area is provided with a plurality of second holes, and the aperture of the second holes is larger than that of the first holes. The area of the first holes accounts for 0.5-25% of the area of the central area. The invention can be used for uniformizing the brightness of the liquid crystal display and simultaneously reducing the problem of chromatic aberration.
Description
Technical field
The present invention relates to a kind of light source module, and relate to a kind of light source module with poriness blooming especially.
Background technology
Liquid crystal indicator typically includes display panels and light source module, and wherein light source module is mainly used to provide the display panels area source required when showing.Generally speaking, light source module can be divided into straight-down negative (directtype) and side-light type (edge-littype) two kinds according to the position set by its light source.The light source of directly-down light source module is configured at immediately below light source module, is generally used for the liquid crystal display of large-size, and the light source of side-light type light source module is then configured at the side of light source module, is generally used for the liquid crystal display of reduced size.
In order to prevent the brightness disproportionation of liquid crystal display, being generally use blooming piece to make the brightness uniformity of whole picture, and keeping the brightness of whole picture when not undermining light-source brightness.With regard to prior art, mainly reach the even object with concentrating of light with blooming pieces such as diffusion sheets (Diffuser).But, in order to reach the object of light uniformization, in existing method, the problem of aberration between light source from light source, can be produced because reflectivity is different.Therefore, how to keep the brightness uniformity of picture and reduce the problem of aberration, by present the theme of wish research.
Summary of the invention
The object of the present invention is to provide a kind of light source module, make it can in order to make the brightness uniformity of liquid crystal display and to reduce the problem of aberration simultaneously.
For achieving the above object, the invention provides a kind of light source module, comprise light source, diffuser plate, wavelength converting optical film and poriness blooming.Diffuser plate is positioned at the top of light source, and wavelength converting optical film is positioned at the top of diffuser plate.Poriness blooming is between light source and diffuser plate, and wherein, poriness blooming has middle section and is positioned at the neighboring area of its central area.Middle section is corresponding with light source to be arranged, and wherein, middle section has multiple first hole.Neighboring area has multiple second hole, and the aperture of the second hole is greater than the aperture of the first hole.The area of described first hole accounts for 0.5 ~ 25% of the area of middle section.
Wherein, the area of this first hole accounts for 0.5 ~ 15% of the area of this middle section.
Wherein, the vertical range between this poriness blooming and this light source is H1, and a vertical range of this poriness blooming and this diffuser plate is H2, and between H2/H1=0.5 ~ 1.5.
Wherein, in this poriness blooming, to should a central point of light source to the outermost horizontal range X of this middle section
0meet: X
0> (H1 × a
0)/t, H1 represents the vertical range between this poriness blooming and this light source, a
0represent the aperture of outermost described second hole leaned on into this middle section, t represents the thickness of this poriness blooming.
Wherein, the area of this middle section be with this light source for the center of circle and diameter for 2X
0areal extent.
Wherein, the aperture a of this first hole arbitrary meets: a≤(X*t)/H1, X represents in this poriness blooming, to should a central point of light source to a horizontal range of described this first hole arbitrary, H1 represents the vertical range between this poriness blooming and this light source, and t represents the thickness of this poriness blooming.
Wherein, more comprise a coating layer, be arranged on this middle section of this poriness blooming, wherein this coating layer comprises a material for transformation of wave length, a diffusion material or its combination.
Wherein, this coating layer is filled within this first hole.
Wherein, this poriness blooming has a first surface and a second surface, and this first surface is towards this diffuser plate, and this second surface is towards this light source, and this coating layer is positioned on this first surface.
Wherein, this coating layer to be positioned on this first surface and to insert this first hole.
Wherein, this poriness blooming has a first surface and a second surface, and this first surface is towards this diffuser plate, and this second surface is towards this light source, and this coating layer is positioned on this second surface.
Wherein, this coating layer to be positioned on this second surface and to insert this first hole.
Wherein, the surface of this coating layer has prism pattern, microlens pattern or roughening pattern.
Wherein, this coating layer more comprises and being arranged in this neighboring area of this poriness blooming.
Wherein, a center line of this light source extends through this first hole of this poriness blooming.
Wherein, the mist degree of this coating layer is 10% to 40%.
Wherein, the material of this wavelength converting optical film comprises quantum dot is bottom material or phosphor material.
Based on above-mentioned, light source module of the present invention includes poriness blooming, and poriness blooming has multiple first hole is arranged at middle section, and the second hole is arranged at neighboring area, therefore, can in order to the problem making the brightness uniformity of picture also reduce aberration simultaneously.
Describe the present invention below in conjunction with the drawings and specific embodiments, but not as a limitation of the invention.
Accompanying drawing explanation
Figure 1A to 1C is the diagrammatic cross-section of the light source module of one embodiment of the invention.
Fig. 2 is the upper schematic diagram of the poriness blooming of one embodiment of the invention.
Fig. 3 A is the diagrammatic cross-section of the light source module of another embodiment of the present invention.
Fig. 3 B is the diagrammatic cross-section of the light source module of another embodiment of the present invention.
Fig. 4 A is the diagrammatic cross-section of the light source module of another embodiment of the present invention.
Fig. 4 B is the diagrammatic cross-section of the light source module of another embodiment of the present invention.
Fig. 5 is the diagrammatic cross-section of the light source module of another embodiment of the present invention.
Wherein, Reference numeral:
100,300A, 300B, 400A, 400B, 500: light source module
110: diffuser plate
120: wavelength converting optical film
130: poriness blooming
140: coating layer
LS: light source
Sub: substrate
FH: the first hole
SH: the second hole
CR: middle section
PR: neighboring area
Embodiment
Figure 1A to Fig. 1 C is the diagrammatic cross-section of the light source module of one embodiment of the invention.Fig. 2 is the upper schematic diagram of the poriness blooming of one embodiment of the invention.Please also refer to Figure 1A to Fig. 1 C and Fig. 2.In the present embodiment, light source module 100 includes light source LS, diffuser plate 110, wavelength converting optical film 120 and poriness blooming 130.In addition, light source module 100 also comprises metal backing, glue frame and circuit control system (not illustrating), and wherein, each light source LS driven by circuit control system.In the present embodiment, be only described for single light source LS, but it should be noted that the light source matrix that light source module 100 comprises in fact multiple light source LS and formed, be arranged on the substrate Sub of light source module 100.The configuration of light source LS collocation wavelength converting optical film 120 can blend together white light in order to make light.In addition, the color of light source LS is not particularly limited, and can be more than one color.
Please refer to Figure 1A to Fig. 1 C, diffuser plate 110 is the tops being positioned at light source LS, and can in order to promote the display brightness of light source module 100.Wavelength converting optical film 120 is positioned at the top of diffuser plate 110, and wherein the material of wavelength converting optical film 120 comprises quantum dot (quantumdots) for bottom material or phosphorescence (phosphor) material.The quantum dot of wavelength converting optical film 120 is such as cadmium selenide/zinc sulphide (CdSe/ZnS) or the material with similar characteristics.The materials such as in wavelength converting optical film 120, the material of main part as quanta point material can be such as polycarbonate (polycarbonate), polymethylmethacrylate (polymethylmethacrylate), acrylonitril butadiene styrene resin (acrylonitrile-butadiene-styrene), polyethylene terephthalate (polyethyleneterephthalate), epoxy resin or glass formed.In addition, wavelength converting optical film 120 can be arranged in pairs or groups titania (TiO
2) or aluminium oxide (Al
2o
3) etc. diffusion particle increase diffusivity.
In the present embodiment, one deck material water-proof material layer (not illustrating) can be covered again on wavelength converting optical film 120.Material water-proof material layer can in order to reduce the luminous intensity characteristic decline that aqueous vapor causes quantum dot or phosphor material.In addition, diffuser plate 110 is configured between wavelength converting optical film 120 and poriness blooming 130.Although the diffuser plate 110 that the embodiment of Figure 1A to Fig. 1 C only illustrates simple layer is configured between wavelength converting optical film 120 and poriness blooming 130, the present invention is not limited thereto.For example, in another embodiment, configurable multilayer diffuser plate 110 between wavelength converting optical film 120 and poriness blooming 130.Again, in another embodiment, the bloomings such as bright enhancement film (brightnessenhancementfilm), dual bright enhancement film (dualbrightnessenhancementfilm), lenticule sheet material (microlenssheet) can be replaced diffuser plate 110 to use, or combining above-mentioned rete uses.
Then, please also refer to Figure 1A to Fig. 1 C and Fig. 2, poriness blooming 130 is between light source LS and diffuser plate 110, and poriness blooming 130 is such as comprising the reflecting materials such as metal.Poriness blooming 130 has middle section CR and is positioned at the neighboring area PR around middle section CR.Particularly, middle section CR is corresponding with light source LS to be arranged, and wherein, middle section CR has at least one first hole FH, and neighboring area PR has multiple second hole SH.Though the embodiment of Figure 1A only illustrates four the first hole FH and four the second hole SH, it should be noted that the first hole FH of Figure 1A is covered with middle section CR, and the second hole SH is covered with neighboring area PR.In the present embodiment, the aperture a of the second hole SH
0be the aperture a being greater than the first hole FH, wherein, the area of the first hole FH accounts for 0.5 ~ 25% of the area of middle section CR.It is preferred that the area of the first hole FH accounts for 0.5 ~ 15% of the area of middle section CR.
In the present embodiment as shown in Figure 1A, the center line of light source LS such as can extend through poriness blooming 130, but the center line of light source LS is not distributed with the first hole FH by part.As shown in Figure 1B and Fig. 1 C, the poriness blooming 130 that Figure 1B illustrates has multiple first hole FH equally, and the center line of light source LS can by one of them first hole FH of poriness blooming 130.In other words, central projection to the position (directly over position) of poriness blooming 130 of light source LS has the first hole FH.The poriness blooming 130 that Fig. 1 C illustrates only has a first hole FH, and the center line of light source LS can pass through this first hole FH.Particularly, the perforated area of the first hole FH is not more than 0.25mm
2.Because middle section CR is provided with the first hole FH, therefore, can improve because high reverse--bias region is excessive directly over light source LS, the light source penetrating capacity caused is not enough and partially yellow partially dark phenomenon occurs.That is, the first hole FH can change the penetrance of middle section CR, middle section CR is had simultaneously penetrate and the characteristic of reflection ray.
From the above, arranging of the first hole FH can make the aperture opening ratio of poriness blooming 130 produce one or more turning point.Particularly, the aperture opening ratio change turning point of poriness blooming 130 is within the region apart from 20mm directly over each light source LS.In more detail, the aperture opening ratio change turning point of poriness blooming 130 can be one or many places, presents mild decline to make the penetrance of poriness blooming 130 from neighboring area PR toward middle section CR.In other words, neighboring area PR has higher penetrance, and during the closer to middle section CR, then penetrance can decline gradually and tend towards stability.
In addition, the vertical range between poriness blooming 130 and light source LS is H1, and poriness blooming 130 is H2 with a vertical range of diffuser plate 110, and between H2/H1=0.5 ~ 1.5.Moreover in poriness blooming 130, the central point of corresponding light source LS is to an outermost horizontal range X of the middle section CR of poriness blooming 130
0need meet: X
0> (H1 × a
0)/t.From the above, H1 represents the vertical range between poriness blooming 130 and light source LS, a
0represent the aperture of the outermost described second hole SH leaned on into middle section CR, t represents the thickness of poriness blooming 130.In other words, the area of middle section CR is with light source LS for the center of circle, and diameter is 2X
0areal extent.
In more detail, the aperture a of arbitrary first hole FH need meet: a≤(X*t)/H1.From the above, X represents in poriness blooming 130, and the central point of corresponding light source LS is to a horizontal range of described arbitrary first hole FH, and H1 represents the vertical range between poriness blooming 130 and light source LS, and t represents the thickness of poriness blooming 130.In addition, as shown in Figure 2, the aperture a of the second hole SH
0along with away from light source LS, meeting is increasing.In poriness blooming 130, the area of the second hole SH is percentage of open area An relative to the ratio of the area of neighboring area PR.Particularly, percentage of open area An need meet: An=bX
n 2+ c, wherein X
nwith above-mentioned for X
0definition identical, and b, c are coefficient.About neighboring area PR, percentage of open area An can referenced patent document US8, and 272,772 define.In addition, in this enforcement, the perforation shape of the first hole FH can be taper, the external form such as cylindrical, trapezoidal, but is not limited thereto.
Based on above-mentioned, the light source module 100 shown in Figure 1A to Fig. 1 C includes poriness blooming 130, and poriness blooming 130 has multiple first hole FH is arranged at middle section CR, and the second hole SH is arranged at neighboring area PR.In addition, the hole configuration of poriness blooming 130 need meet above-mentioned condition.Therefore, light source module 100 can in order to the problem making the brightness uniformity of picture also reduce aberration simultaneously.
Fig. 3 A is the diagrammatic cross-section of the light source module of another embodiment of the present invention.Then, be described to the light source module 300A of Fig. 3 A.The light source module 100 of light source module 300A and Figure 1A of Fig. 3 A is similar, and therefore same components represents with identical label, and it will not go into details.The embodiment of Fig. 3 A and the embodiment difference of Figure 1A are, the light source module 300A of Fig. 3 A more comprises the middle section CR that coating layer 140 is arranged on poriness blooming 130.Coating layer 140 can comprise material for transformation of wave length, diffusion material or its combination.Specifically, the material of coating layer 140 can be selected from material and the combination thereof of above-mentioned diffuser plate 110 and wavelength converting optical film 120.In addition, the surface of coating layer 140 has prism pattern, microlens pattern or roughening pattern.In the embodiment in fig. 3 a, poriness blooming 130 has first surface and second surface, and first surface is towards diffuser plate 110, and second surface is towards light source LS, and wherein, coating layer 140 is positioned on first surface.
Based on above-mentioned, the light source module 300A shown in Fig. 3 A includes poriness blooming 130, and poriness blooming 130 has multiple first hole FH is arranged at middle section CR, and the second hole SH is arranged at neighboring area PR.In addition, the hole configuration of poriness blooming 130 also needs to meet above-mentioned condition.Therefore, light source module 300A can in order to the problem making the brightness uniformity of picture also reduce aberration simultaneously.
Fig. 3 B is the diagrammatic cross-section of the light source module of another embodiment of the present invention.Then, be described to the light source module 300B of Fig. 3 B.The light source module 300B of Fig. 3 B and the light source module 300A of Fig. 3 A is similar, and therefore same components represents with identical label, and it will not go into details.The embodiment of Fig. 3 B and the embodiment difference of Fig. 3 A are, the coating layer 140 of the light source module 300B of Fig. 3 B is positioned on the first surface of poriness blooming 130, and coating layer 140 inserts in the first hole FH.
Based on above-mentioned, the light source module 300B shown in Fig. 3 B includes poriness blooming 130, and poriness blooming 130 has multiple first hole FH is arranged at middle section CR, and the second hole SH is arranged at neighboring area PR.In addition, the hole configuration of poriness blooming 130 also needs to meet above-mentioned condition.Therefore, light source module 300B can in order to the problem making the brightness uniformity of picture also reduce aberration simultaneously.
Fig. 4 A is the diagrammatic cross-section of the light source module of another embodiment of the present invention.Then, be described to the light source module 400A of Fig. 4 A.The light source module 400A of Fig. 4 A and the light source module 300A of Fig. 3 A is similar, and therefore same components represents with identical label, and it will not go into details.The embodiment of Fig. 4 A and the embodiment difference of Fig. 3 A are, the coating layer 140 of the light source module 400A of Fig. 4 A is positioned on the second surface of poriness blooming 130.That is, coating layer 140 is arranged in poriness blooming 130 towards on the second surface of light source LS.
Based on above-mentioned, the light source module 400A shown in Fig. 4 A includes poriness blooming 130, and poriness blooming 130 has multiple first hole FH is arranged at middle section CR, and the second hole SH is arranged at neighboring area PR.In addition, the hole configuration of poriness blooming 130 also needs to meet above-mentioned condition.Therefore, light source module 400A can in order to the problem making the brightness uniformity of picture also reduce aberration simultaneously.
Fig. 4 B is the diagrammatic cross-section of the light source module of another embodiment of the present invention.Then, be described to the light source module 400B of Fig. 4 B.The light source module 400B of Fig. 4 B and the light source module 400A of Fig. 4 A is similar, and therefore same components represents with identical label, and it will not go into details.The embodiment of Fig. 4 B and the embodiment difference of Fig. 4 A are, the coating layer 140 of the light source module 400B of Fig. 4 B is positioned on the second surface of poriness blooming 130, and coating layer 140 inserts in the first hole FH.
Based on above-mentioned, the light source module 400B shown in Fig. 4 B includes poriness blooming 130, and poriness blooming 130 has multiple first hole FH is arranged at middle section CR, and the second hole SH is arranged at neighboring area PR.In addition, the hole configuration of poriness blooming 130 also needs to meet above-mentioned condition.Therefore, light source module 400A can in order to the problem making the brightness uniformity of picture also reduce aberration simultaneously.
Fig. 5 is the diagrammatic cross-section of the light source module of another embodiment of the present invention.Then, be described to the light source module 500 of Fig. 5.The light source module 500 of Fig. 5 is similar with the light source module 400B of Fig. 4 B, and therefore same components represents with identical label, and it will not go into details.The embodiment of Fig. 5 and the embodiment difference of Fig. 4 B are, the coating layer 140 of the light source module 500 of Fig. 5 inserts in the first hole FH, but do not cover described first surface or second surface.
Based on above-mentioned, the light source module 500 shown in Fig. 5 includes poriness blooming 130, and poriness blooming 130 has multiple first hole FH is arranged at middle section CR, and the second hole SH is arranged at neighboring area PR.In addition, the hole configuration of poriness blooming 130 also needs to meet above-mentioned condition.Therefore, light source module 500 can in order to the problem making the brightness uniformity of picture also reduce aberration simultaneously.
In the embodiment of Fig. 3 A to Fig. 5, coating layer 140 is only arranged in the middle section CR of poriness blooming 130, but the present invention is not limited thereto.For example, in another embodiment, coating layer 140 more comprises and being arranged in the neighboring area PR of poriness blooming 130.Identical, coating layer 140 can change with reference to the embodiment of figure 3A to Fig. 5 in the configuration of neighboring area PR.In addition, in the present embodiment, if the thickness of poriness blooming 130 is t, then the thickness being positioned at the upper surface of poriness blooming 130 or the coating layer 140 of lower surface is 0.14t ~ 0.26t.
[example]
Next, as shown in table 1 to table 3, define to poriness blooming 130 in the relation between the perforated area and above-mentioned H1/H2 of middle section CR.
Table 1
Table 2
Table 3
Can be found by the example of table 1 to table 3, when the distance that H1 and H2 is added reduces, then the perforated area ratio of A2/A1 can increase.Contrary, if when the distance that H1 and H2 is added increases, then the perforated area ratio of A2/A1 can diminish.Experimental result finds, in middle section, when the perforated area ratio of A2/A1 is 0.5% ~ 25%, then aberration transforming numerical can be controlled in the scope of 0.001 ~ 0.020.That is, when the hole configuration of poriness blooming 130 and the distance of H1 and H2 meet the condition of above-mentioned table 1 ~ table 3, the picture brightness homogenising that light source module can be made to present also reduces the problem of aberration simultaneously.But when the perforated area of A2/A1 is than when the scope of 0.5% ~ 25% is outer, then the energy distribution of light source module or light and shade brightness easily have the generation of uneven phenomenon.
In addition, in the example in table 1 to table 3, coating layer 140 can in order to fill up the first hole FH, and wherein, the mist degree of coating layer 140 is in the scope of 10% ~ 40%.Specifically, when coating layer 140 fills up the first hole FH, its thickness is 0.75 millimeter.In other words, the thickness of coating layer 140 can be identical with the thickness of poriness blooming 130.If coating layer 140 is when being positioned on the first surface of poriness blooming 130 or second surface, then the thickness of thin layer of coating layer 140 is 0.15 ± 0.05 millimeter.From the above, when the mist degree of coating layer 140 and thickness be control in above-mentioned scope time, the brightness uniformity of picture can be made further, and difference band of can not checking colors affects.
Moreover experimental result finds, above wavelength converting optical film 120 or when below increases blooming, then can in order to improve yellow dizzy problem.Therefore, those skilled in the art with reference to the present invention, can increase in the top of wavelength converting optical film 120 or below and arrange as blooming pieces such as bright enhancement film, dual bright enhancement film, lenticule sheet materials, to strengthen effect of the present invention further.
In sum, light source module of the present invention includes poriness blooming, and poriness blooming has multiple first hole is arranged at middle section, and the second hole is arranged at neighboring area.In addition, the configuration of the hole of poriness blooming, and the distance between itself and diffuser plate and light source need meet specified conditions.Therefore, light source module of the present invention can in order to the problem making the brightness uniformity of picture also reduce aberration simultaneously.
Certainly; the present invention also can have other various embodiments; when not deviating from the present invention's spirit and essence thereof; those of ordinary skill in the art can make various corresponding change and distortion according to the present invention, but these change accordingly and are out of shape the protection domain that all should belong to the claims in the present invention.
Claims (17)
1. a light source module, is characterized in that, comprising:
One light source;
One diffuser plate, is positioned at the top of this light source;
One wavelength converting optical film, is positioned at the top of this diffuser plate; And
One poriness blooming, between this light source and this diffuser plate, this poriness blooming has a middle section and is positioned at a neighboring area of this its central area, this middle section is corresponding with this light source to be arranged, wherein this middle section has at least one first hole, this neighboring area has multiple second hole, and the aperture of the plurality of second hole is greater than the aperture of this first hole, and wherein the area of this first hole accounts for 0.5 ~ 25% of the area of this middle section.
2. light source module according to claim 1, is characterized in that, the area of this first hole accounts for 0.5 ~ 15% of the area of this middle section.
3. light source module according to claim 1, is characterized in that, the vertical range between this poriness blooming and this light source is H1, and a vertical range of this poriness blooming and this diffuser plate is H2, and between H2/H1=0.5 ~ 1.5.
4. light source module according to claim 1, is characterized in that, in this poriness blooming, to should a central point of light source to the outermost horizontal range X of this middle section
0meet: X
0> (H1 × a
0)/t, H1 represents the vertical range between this poriness blooming and this light source, a
0represent the aperture of outermost described second hole leaned on into this middle section, t represents the thickness of this poriness blooming.
5. light source module according to claim 4, is characterized in that, the area of this middle section be with this light source for the center of circle and diameter for 2X
0areal extent.
6. light source module according to claim 1, it is characterized in that, the aperture a of this first hole arbitrary meets: a≤(X*t)/H1, X represents in this poriness blooming, to should a central point of light source to a horizontal range of described this first hole arbitrary, H1 represents the vertical range between this poriness blooming and this light source, and t represents the thickness of this poriness blooming.
7. light source module according to claim 1, is characterized in that, more comprises a coating layer, is arranged on this middle section of this poriness blooming, and wherein this coating layer comprises a material for transformation of wave length, a diffusion material or its combination.
8. light source module according to claim 7, is characterized in that, this coating layer is filled within this first hole.
9. light source module according to claim 7, is characterized in that, this poriness blooming has a first surface and a second surface, and this first surface is towards this diffuser plate, and this second surface is towards this light source, and this coating layer is positioned on this first surface.
10. light source module according to claim 9, is characterized in that, this coating layer to be positioned on this first surface and to insert this first hole.
11. light source modules according to claim 7, is characterized in that, this poriness blooming has a first surface and a second surface, and this first surface is towards this diffuser plate, and this second surface is towards this light source, and this coating layer is positioned on this second surface.
12. light source modules according to claim 11, is characterized in that, this coating layer to be positioned on this second surface and to insert this first hole.
13. light source modules according to claim 7, is characterized in that, the surface of this coating layer has prism pattern, microlens pattern or roughening pattern.
14. light source modules according to claim 7, is characterized in that, this coating layer more comprises and being arranged in this neighboring area of this poriness blooming.
15. light source modules according to claim 1, is characterized in that, a center line of this light source extends through this first hole of this poriness blooming.
16. light source modules according to claim 7, is characterized in that, the mist degree of this coating layer is 10% to 40%.
17. light source modules according to claim 1, is characterized in that, it is bottom material or phosphor material that the material of this wavelength converting optical film comprises quantum dot.
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| TW104127570A TWI542929B (en) | 2015-08-24 | 2015-08-24 | Light source module |
| TW104127570 | 2015-08-24 |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN105278159B (en) | 2018-06-15 |
| TW201708907A (en) | 2017-03-01 |
| TWI542929B (en) | 2016-07-21 |
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