CN102042564B - Light guide plate and backlight module - Google Patents
Light guide plate and backlight module Download PDFInfo
- Publication number
- CN102042564B CN102042564B CN 200910206332 CN200910206332A CN102042564B CN 102042564 B CN102042564 B CN 102042564B CN 200910206332 CN200910206332 CN 200910206332 CN 200910206332 A CN200910206332 A CN 200910206332A CN 102042564 B CN102042564 B CN 102042564B
- Authority
- CN
- China
- Prior art keywords
- coating
- microstructures
- light
- microstructure
- transparent substrates
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Abstract
The invention relates to a light guide plate and a backlight module. The light guide plate comprises a transparent base plate and a plurality of microstructures, wherein the transparent base plate is provided with an underside, a light exit face and a light incidence face, wherein the light exit face and the light incidence face are opposite and the light exit face is connected to first surface and a second surface opposite to the first surface; the plurality of microstructures are separated mutually and at least arranged on the first surface of the transparentbase plate; each microstructure comprises a first coating and a second coating; the first coating is formed on the first surface and contains adhesive material; and the second coating is formed on atleast the partial surface of the first coating and contains photodiffusion material. The light guide plate and the backlight module, disclosed in the invention, have good light-emitting uniformity.
Description
[technical field]
The backlight module that the invention relates to a kind of light guide plate and have this kind light guide plate.
[background technology]
Fig. 1 is for showing the three-dimensional exploded view of an existing backlight module 20.As shown in Figure 1, backlight module 20 has a backboard 21, and is provided with a light guide plate 22, a reflector plate 23, a light source 24 and one group of blooming in the backboard 21, and blooming for example comprises a diffusion sheet 25, a brightness enhancement film 26 etc.The bright dipping side of diffusion sheet 25 contiguous light guide plate 22, the bottom surface 22a of reflector plate 23 contiguous light guide plate 22, and the light inlet side of light source 24 contiguous light guide plate 22.Light guide plate 22 is transparent substrates, light guide plate 22 can be guided the light beam that light source 24 sends, light beam is incident in the light guide plate 22 by the incidence surface of light guide plate 22, upper surface (light-emitting face) by light guide plate 22 penetrates again, and pass diffusion sheet 25, brightness enhancement film 26 in regular turn, to improve bright dipping briliancy and the uniformity coefficient of backlight module.In existing design, the bottom surface 11 of light guide plate 22 is formed with microstructure usually, to improve the outgoing light homogeneity of backlight module.For example, the TaiWan, China patent discloses a kind of optical element made from little drop ink-jet TWI294402 number, utilizes the mode of dripping little drop on the surface of transparency carrier to form microstructure.In addition, the TaiWan, China patent also discloses a kind of light guide plate TWM345244 number, and the bottom surface of this kind light guide plate is ink lay, and the surface of ink lay convexes with hemispherical leaded light line to form microstructure.In addition, No. 200732785 exposure of TaiWan, China patent publication No. is a kind of processes light guide plate with ink-jet or some glue processing procedure, to form the design of salient point microstructure.
Yet, microstructure form of above-mentioned each existing design, can't provide one can the local actual mechanism of adjusting the light guide plate emitting brightness, so be difficult to further improve the outgoing light homogeneity of light guide plate.
[summary of the invention]
The invention provides a kind of light guide plate and backlight module with good outgoing light homogeneity.
Other purposes of the present invention and advantage can be further understood from the disclosed technical characterictic of the present invention.
For reaching one of above-mentioned or partly or all purposes or other purposes, according to one embodiment of the invention, a kind of light guide plate comprises a transparent substrates and several microstructures.Transparent substrates has a bottom surface, a light-emitting face and an incidence surface, wherein this light-emitting face is relative with this bottom surface, and this incidence surface connects this bottom surface and this light-emitting face, and those microstructures are arranged on the bottom surface of transparent substrates at least, and those microstructures are separated from one another.Each microstructure comprises one first coating and one second coating, and first coating is formed on the bottom surface and comprises adhesive material, and second coating is formed at least part of surface of first coating and comprises photodiffusion material.
According to another embodiment of the present invention, a kind of light guide plate comprises a transparent substrates, several first microstructures, reaches several second microstructures.Transparent substrates has a bottom surface, a light-emitting face and an incidence surface, and wherein this light-emitting face is relative with this bottom surface, and this incidence surface connects this bottom surface and this light-emitting face.Each first microstructure comprises one first coating and one second coating, and first coating is formed on the bottom surface and comprises adhesive material, and second coating is formed at least part of surface of first coating and comprises photodiffusion material.Each second microstructure is made of adhesive material and is not had a photodiffusion material.
According to another embodiment of the present invention, a kind of backlight module comprises a light guide plate and a light source.Light guide plate comprises a transparent substrates and several microstructures.Light source is arranged at a side of transparent substrates and towards incidence surface.Transparent substrates has a bottom surface, a light-emitting face and an incidence surface, and light-emitting face is relative with the bottom surface, and incidence surface connects bottom surface and light-emitting face.Those microstructures are arranged on the bottom surface of transparent substrates, and each microstructure comprises one first coating and one second coating, first coating is formed on the bottom surface and comprises adhesive material, and second coating is formed at least part of surface of first coating and comprises photodiffusion material.Light source is suitable for sending a light beam, and light beam is suitable for being incident to transparent substrates by incidence surface, and by those microstructure deviations by being penetrated by light-emitting face.
In an embodiment, each microstructure has adhesive material differing from each other or photodiffusion material differing from each other.
In an embodiment, the refractive index of first coating and the refractive index of transparent substrates are roughly the same.
In an embodiment, the width of first coating or second coating is about 0.1 micron to 500 microns, and the thickness of first coating or second coating is about 0.1 micron to 50 microns.
The present invention also provides a kind of light guide plate, comprises:
One transparent substrates has a bottom surface, a light-emitting face and an incidence surface, and wherein this light-emitting face is relative with this bottom surface, and this incidence surface connects this bottom surface and this light-emitting face;
Several the 5th microstructures are arranged on this bottom surface of this transparent substrates at least, and separated from one another and each the 5th microstructure of those the 5th microstructures comprises:
One first coating is formed on this bottom surface and comprises adhesive material; And
One second coating is formed at least part of surface of this first coating and comprises photodiffusion material; And
Several the 6th microstructures are arranged on this bottom surface of this transparent substrates at least, and those the 6th microstructures are separated from one another, and each the 6th microstructure is made of adhesive material and does not have this photodiffusion material.
The present invention also provides a kind of backlight module, comprises:
One light guide plate comprises:
One transparent substrates, this transparent substrates have a bottom surface, a light-emitting face and an incidence surface, and wherein this light-emitting face is relative with this bottom surface, and this incidence surface connects this bottom surface and this light-emitting face; And
Several microstructures, at least be arranged on this bottom surface of this transparent substrates, separated from one another and each this microstructure of those microstructures has one first coating and one second coating, wherein this first coating is formed on this bottom surface and comprises adhesive material, and this second coating is formed at least part of surface of this first coating and comprises photodiffusion material; And
One light source is arranged at a side of this transparent substrates and towards this incidence surface, this light source is suitable for sending a light beam, this light beam be suitable for by this incidence surface be incident to this transparent substrates and by those microstructure deviations by being penetrated by this light-emitting face.
Design by above-mentioned each embodiment, in between each microstructure by second coating optionally is set, change first coating the adhesive material kind, change profile or the size of first coating or change the photodiffusion material kind of second coating, can form the microstructure with different expansion light characteristics, therefore can provide a kind of effective regional brightness to adjust mechanism, obtain the regional effect of adjusting the light guide plate emitting brightness, and improve the outgoing light homogeneity of light guide plate.
Other purposes of the present invention and advantage can be further understood from the disclosed technical characterictic of the present invention.For above-mentioned and other purposes, feature and advantage of the present invention can be become apparent, embodiment cited below particularly also cooperates appended graphicly, is described in detail below.
[description of drawings]
Fig. 1 is for showing the three-dimensional exploded view of an existing backlight module.
Fig. 2 A is the synoptic diagram of the backlight module of demonstration one embodiment of the invention.
Fig. 2 B is a synoptic diagram, shows the microstructure form of one embodiment of the invention.
Fig. 3 shows the process flow diagram of the microstructure that forms one embodiment of the invention.
Fig. 4 shows the sectional view of a plurality of microstructures.
Fig. 5 is the side view of the backlight module of demonstration one embodiment of the invention.
Fig. 6 is the synoptic diagram of the microstructure first coating profile of demonstration different embodiments of the invention.
Fig. 7 shows the process flow diagram of the microstructure that forms another embodiment of the present invention.
20 backlight modules
21 backboards
22 light guide plate
The 22a bottom surface
23 reflector plates
24 light sources
25 diffusion sheets
26 brightness enhancement film
200 light guide plate
201 backlight modules
The 201a backlight module
220 transparent substrates
221 incidence surfaces
222 bottom surfaces
223 light-emitting faces
230 reflector plates
240,240a, 240b, 240c first microstructure
245 light sources
260 second microstructures
341 first coatings
342 second coatings
The A1 contact angle
The B1 contact angle
The S1 zone
The S2 zone
[embodiment]
About aforementioned and other technology contents, characteristics and effect of the present invention, in the following detailed description that cooperates with reference to graphic embodiment, can clearly present.The direction term of mentioning in following examples, for example: upper and lower, left and right, front or rear etc. only are the directions with reference to annexed drawings.Therefore, the direction term of use is to illustrate not to be to limit the present invention.
Fig. 2 A is the synoptic diagram of the backlight module of demonstration one embodiment of the invention.Fig. 2 B is a synoptic diagram, shows the microstructure form of one embodiment of the invention.Please refer to Fig. 2 A and Fig. 2 B, backlight module 201 comprises a light guide plate 200 and a light source 245.Light guide plate 200 comprises a transparent substrates 220, and transparent substrates 220 has a bottom surface 222, a light-emitting face 223 and an incidence surface 221.Light-emitting face 223 is relative with bottom surface 222, and incidence surface 221 connects bottom surface 222 and light-emitting face 223.Light source 245 is arranged at a side of transparent substrates 220, and towards the incidence surface 221 of transparent substrates 220.Several microstructures are distributed in mode separated from one another on the bottom surface 222 of transparent substrates 220, and each aforesaid several microstructure can have different structures, profile or material, and following is the example explanation with first microstructure 240 and second microstructure 260.Shown in Fig. 2 B, first microstructure 240 comprises one first coating 341 and one second coating, 342, the first coatings 341 are formed on the bottom surface 222 of transparent substrates 220, and second coating 342 is formed at least part of surface of first coating 341.First coating 341 is for photic zone and have adhesive material, and so after first coating 341 was formed on the bottom surface 222, second coating 342 was adhered on first coating 341 and fixes.First coating 341 for example can utilize ejection, modes such as some glue etc. to form, and the refractive index of first coating 341 is substantially equal to the refractive index of transparent substrates 220, to reduce the energy loss after light beam penetrates transparent substrates 220.In an embodiment, the width range of first coating 341 can be 0.1 micron to 500 microns, and thickness range can be 0.1 micron to 50 microns.Second coating 342 has photodiffusion material, in order to beam spread,, can be penetrated by light-emitting face 223 again after superrefraction or reflection through the light beam of diffusion.Because second coating 342 is formed on first coating 341, so the distributed areas of second coating 342 are equal to or less than the distributed areas of first coating 341.In an embodiment, the width range of second coating 342 can be 0.1 micron to 500 microns, and thickness range can be 0.1 micron to 50 microns.Moreover second microstructure 260 only comprises first coating 341 and does not have second coating 342.In other words, be distributed in several microstructures on the transparent substrates bottom surface 222, second coating 342 optionally arranges or is not arranged on first coating 341.Therefore, first microstructure, 240 tool light diffusion effects and second microstructure 260 are not had a light diffusion effect, so by optionally distribute first microstructure 240 and second microstructure 260 in the zones of different of transparent substrates bottom surface 222, can obtain the regional effect of adjusting the light guide plate emitting brightness, and improve the outgoing light homogeneity of light guide plate.
Fig. 3 shows the process flow diagram of first microstructure 240 that forms one embodiment of the invention.Please refer to Fig. 3, at first 222 form first coating 341 in modes such as ink-jet, some glue, photoresistance processing procedure, chemical etchings in the bottom surface, again the drop that is about to form second coating 342, drip on first coating 341, this moment, second coating 342 was suitable for selecting formed different surfaces tension force according to the material of first coating 341, thereby had different distribution areas and profile.For example, shown in Fig. 2 B, the material of the cause first microstructure 240a, 240b and 240c three's first coating 341 is different each other, make second coating, the 342 shared scopes of the first microstructure 240b greater than second coating, the 342 shared scopes of the first microstructure 240c, and second coating, the 342 shared scopes of the first microstructure 240c are again greater than second coating, the 342 shared scopes of the first microstructure 240a.Similarly, when the material of the drop that forms second coating 342 not simultaneously, also can on first coating 341, form second coating 342 of different distributions area and profile.Therefore, select to change surface tension characteristics between the interface by the material of first coating 341 and second coating 342, and then can adjust distribution range and the profile of second coating 342 on first coating 341.As shown in Figure 4, when the material of the first microstructure 240a and both second coatings 342 of the first microstructure 240b is inequality, the thickness of second coating 342 of the first microstructure 240b is less than the thickness of second coating 342 of the first microstructure 240a, so the contact angle B1 of second coating 342 of the first microstructure 240b is less than the contact angle A1 of second coating 342 of the first microstructure 240a.Because the microstructure of the high contact angle of tool can provide higher light deflection amount, there is the different materials of selection can change the contact angle size of second coating 342 so borrow, and the different microstructures that expand the light path degree of tool respectively can be provided.Therefore, optionally be arranged at the zones of different of bottom surface of light guide plate 222 as the first microstructure 240a (high contact angle) and the first microstructure 240b (low contact angle), or adjust the first microstructure 240a and the first microstructure 240b respectively in the distribution density of a regional area, the regional effect of adjusting the light guide plate emitting brightness can be obtained, and the outgoing light homogeneity of light guide plate can be improved.
Fig. 5 is the side view of the backlight module of demonstration one embodiment of the invention.The backlight module 201a of Fig. 5 is similar to the backlight module 201 of Fig. 2 A, so the identical symbol of components identical use, and omits its related description.In present embodiment, backlight module 201a more comprises a reflector plate 230, in order to the light beam of reflection from light guide plate 200.Because the bottom surface 222 of light guide plate 200 is provided with the first different microstructure 240, because the first different microstructure 240 has different expansion light characteristics, therefore can provide a kind of effective regional brightness to adjust mechanism.
Refer again to Fig. 2 A, light source 245 can be for example light emitting diode (light emitting diode of a pointolite in an embodiment, LED), the regional S2 in the gap of the regional S1 of corresponding light source 245 and corresponding two adjacent light sources 245 for example can be divided in the bottom surface 222 of light guide plate 200.Because regional S1 is different with the brightness of regional S2, therefore can be in the microstructure of regional S1 and regional S2 distribution different shape, so that the brightness of regional S1 and regional S2 approaches.Microstructure in these different kenels can obtain by aforementioned each embodiment, for example first coating 341 uses identical materials and second coating 342 to use different material, and perhaps first coating 341 uses different material and second coating 342 to use identical materials.Perhaps, the microstructure of tool second coating 341 not also optionally is set to adjust brightness.
Moreover first coating, 341 profiles that are formed at each microstructure on the transparent substrates 220 do not limit, and for example can be circle shown in Figure 6, rectangle or triangle etc. and all can.In addition, in one embodiment, the different profiles of first coating 341 and big I limit distribution profile and the size of second coating 342.As shown in Figure 7, because first coating 341 is rectangle, when the drop that constitutes second coating 342, when dripping on first coating 341, this moment, second coating 342 can be subjected to the shape limitation of first coating 341, and had distribution shape, size and the thickness different with Fig. 3 (first coating 341 is for circular).
Design by above-mentioned each embodiment, in between each microstructure by second coating 342 optionally is set, change first coating 341 the adhesive material kind, change profile or the size of first coating 341 or change the photodiffusion material kind of second coating 342, can form the microstructure with different expansion light characteristics, therefore can provide a kind of effective regional brightness to adjust mechanism, obtain the regional effect of adjusting the light guide plate emitting brightness, improve the outgoing light homogeneity of light guide plate.
The above, it only is preferred embodiment of the present invention, when not limiting scope of the invention process with this, namely the simple equivalent of doing according to the present patent application claim and invention description content generally changes and modifies, and all still belongs in the scope that patent of the present invention contains.Arbitrary embodiment of the present invention or claim must not reached the disclosed whole purposes of the present invention or advantage or characteristics in addition.
Claims (19)
1. light guide plate comprises:
One transparent substrates has a bottom surface, a light-emitting face and an incidence surface, and wherein this light-emitting face is relative with this bottom surface, and this incidence surface connects this bottom surface and this light-emitting face; And
Several microstructures are arranged on this bottom surface of this transparent substrates at least, and separated from one another and each this microstructure of those microstructures comprises:
One first coating is formed on this bottom surface and comprises adhesive material; And
One second coating is formed at least part of surface of this first coating and comprises photodiffusion material;
Wherein, those microstructures comprise several first microstructures and several second microstructures at least, this first coating of each this first microstructure comprises one first adhesive material, this first coating of each this second microstructure comprises one second adhesive material, and this first adhesive material is different with this second adhesive material;
Those microstructures comprise several the 3rd microstructures and several the 4th microstructures at least, this second coating of each the 3rd microstructure comprises one first photodiffusion material, this second coating of each the 4th microstructure comprises one second photodiffusion material, and this first photodiffusion material is different with this second photodiffusion material.
2. light guide plate as claimed in claim 1, it is characterized in that: those first microstructures are different in the distribution density of this transparent substrates with those second microstructures in the distribution density of this transparent substrates.
3. light guide plate as claimed in claim 1, it is characterized in that: those the 3rd microstructures are different in the distribution density of this transparent substrates with those the 4th microstructures in the distribution density of this transparent substrates.
4. light guide plate as claimed in claim 1, it is characterized in that: the refractive index of this first coating and the refractive index of this transparent substrates are roughly the same.
5. light guide plate as claimed in claim 1, it is characterized in that: the width of this first coating or this second coating is 0.1 micron to 500 microns.
6. light guide plate as claimed in claim 1, it is characterized in that: the thickness of this first coating or this second coating is 0.1 micron to 50 microns.
7. light guide plate comprises:
One transparent substrates has a bottom surface, a light-emitting face and an incidence surface, and wherein this light-emitting face is relative with this bottom surface, and this incidence surface connects this bottom surface and this light-emitting face;
Several the 5th microstructures are arranged on this bottom surface of this transparent substrates at least, and separated from one another and each the 5th microstructure of those the 5th microstructures comprises:
One first coating is formed on this bottom surface and comprises adhesive material; And
One second coating is formed at least part of surface of this first coating and comprises photodiffusion material; And
Several the 6th microstructures are arranged on this bottom surface of this transparent substrates at least, and those the 6th microstructures are separated from one another, and each the 6th microstructure is made of adhesive material and does not have this photodiffusion material.
8. light guide plate as claimed in claim 7, it is characterized in that: those the 5th microstructures are different in the distribution density of this transparent substrates with those the 6th microstructures in the distribution density of this transparent substrates.
9. light guide plate as claimed in claim 7, it is characterized in that: the refractive index of this first coating and the refractive index of this transparent substrates are roughly the same.
10. light guide plate as claimed in claim 7, it is characterized in that: the width of this first coating or this second coating is 0.1 micron to 500 microns.
11. light guide plate as claimed in claim 7 is characterized in that: the thickness of this first coating or this second coating is 0.1 micron to 50 microns.
12. a backlight module comprises:
One light guide plate comprises:
One transparent substrates, this transparent substrates have a bottom surface, a light-emitting face and an incidence surface, and wherein this light-emitting face is relative with this bottom surface, and this incidence surface connects this bottom surface and this light-emitting face; And
Several microstructures, at least be arranged on this bottom surface of this transparent substrates, separated from one another and each this microstructure of those microstructures has one first coating and one second coating, wherein this first coating is formed on this bottom surface and comprises adhesive material, and this second coating is formed at least part of surface of this first coating and comprises photodiffusion material; And
One light source is arranged at a side of this transparent substrates and towards this incidence surface, this light source is suitable for sending a light beam, this light beam be suitable for by this incidence surface be incident to this transparent substrates and by those microstructure deviations by being penetrated by this light-emitting face,
Wherein, those microstructures comprise several the 11 microstructures and several the 12 microstructures at least, and the profile of this first coating of each the 11 microstructure is different with the profile of this first coating of each the 12 microstructure,
Those microstructures comprise several the 13 microstructures and several the 14 microstructures at least, and the size of this first coating of each the 13 microstructure is different with the size of this first coating of each the 14 microstructure.
13. backlight module as claimed in claim 12, it is characterized in that: those microstructures comprise several the 7th microstructures and several the 8th microstructures at least, this first coating of each the 7th microstructure comprises one first adhesive material, this first coating of each the 8th microstructure comprises one second adhesive material, and this first adhesive material is different with this second adhesive material.
14. backlight module as claimed in claim 13 is characterized in that: those the 7th microstructures are different in the distribution density of this transparent substrates with those the 8th microstructures in the distribution density of this transparent substrates.
15. backlight module as claimed in claim 12, it is characterized in that: those microstructures comprise several the 9th microstructures and several the tenth microstructures at least, this second coating of each the 9th microstructure comprises one first photodiffusion material, this second coating of each the tenth microstructure comprises one second photodiffusion material, and this first photodiffusion material is different with this second photodiffusion material.
16. backlight module as claimed in claim 15 is characterized in that: those the 9th microstructures are different in the distribution density of this transparent substrates with those the tenth microstructures in the distribution density of this transparent substrates.
17. backlight module as claimed in claim 12 is characterized in that: the refractive index of this first coating and the refractive index of this transparent substrates are roughly the same.
18. backlight module as claimed in claim 12 is characterized in that: the width of this first coating or this second coating is 0.1 micron to 500 microns.
19. backlight module as claimed in claim 12 is characterized in that: the thickness of this first coating or this second coating is 0.1 micron to 50 microns.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN 200910206332 CN102042564B (en) | 2009-10-15 | 2009-10-15 | Light guide plate and backlight module |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN 200910206332 CN102042564B (en) | 2009-10-15 | 2009-10-15 | Light guide plate and backlight module |
Publications (2)
Publication Number | Publication Date |
---|---|
CN102042564A CN102042564A (en) | 2011-05-04 |
CN102042564B true CN102042564B (en) | 2013-08-14 |
Family
ID=43908946
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN 200910206332 Expired - Fee Related CN102042564B (en) | 2009-10-15 | 2009-10-15 | Light guide plate and backlight module |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN102042564B (en) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1512199A (en) * | 2002-12-28 | 2004-07-14 | 鸿富锦精密工业(深圳)有限公司 | Light conducting plate and area source device |
US6827456B2 (en) * | 1999-02-23 | 2004-12-07 | Solid State Opto Limited | Transreflectors, transreflector systems and displays and methods of making transreflectors |
-
2009
- 2009-10-15 CN CN 200910206332 patent/CN102042564B/en not_active Expired - Fee Related
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6827456B2 (en) * | 1999-02-23 | 2004-12-07 | Solid State Opto Limited | Transreflectors, transreflector systems and displays and methods of making transreflectors |
CN1512199A (en) * | 2002-12-28 | 2004-07-14 | 鸿富锦精密工业(深圳)有限公司 | Light conducting plate and area source device |
Also Published As
Publication number | Publication date |
---|---|
CN102042564A (en) | 2011-05-04 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
TWI794456B (en) | optical device | |
US10838255B2 (en) | Direct view display device and light unit for direct view display device | |
US20080158912A1 (en) | Light guide plate | |
EP2530515A2 (en) | Optical film and method for manufacturing the same and liquid crystal display device using the same | |
CN101221265A (en) | Light guiding plate | |
US8351119B2 (en) | Multi-coated hybrid optical film structure | |
GB2463913A (en) | Light guide with cladding layers | |
JP2007283601A (en) | Optical sheet, backlight device, and liquid crystal display | |
TW201323949A (en) | Planar front illumination system having a light guide with micro scattering features formed thereon and method of manufacturing the same | |
US10816853B2 (en) | Backlight module and liquid crystal display device | |
CN101295101A (en) | Multifunctional optical multilayer film using micro-patterning | |
KR101676901B1 (en) | Optical films laminate and backlight unit having enhanced optical performance | |
CN101178506A (en) | Backlight module | |
CN201159778Y (en) | Light conducting plate and side light type backlight module with the same | |
CN100437154C (en) | Light source diffusion plate and backlight module | |
TW201015159A (en) | Structure for multi-layer coating composite optical film | |
JP2013097876A (en) | Light diffusion member, light guide plate and surface light source device | |
US8308338B2 (en) | Light guide plate and backlight module | |
CN114114499A (en) | Polarization-maintaining optical film, polarization-maintaining diffusion film and double-sided fog polarization-maintaining diffusion film | |
CN103336387A (en) | Edge-light backlight and liquid crystal display provided with same | |
CN112180497A (en) | Glass light guide plate and glass diffusion plate fuse structure in a poor light | |
CN109976037B (en) | Lateral backlight source and display device thereof | |
CN102042564B (en) | Light guide plate and backlight module | |
CN201859228U (en) | Light diffusion plate | |
CN209624820U (en) | Light guiding film, light guide plate, backlight module and display device |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
C06 | Publication | ||
PB01 | Publication | ||
C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
CF01 | Termination of patent right due to non-payment of annual fee | ||
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130814 Termination date: 20181015 |