CN104181630A - Light guide plate, backlight module and liquid crystal display apparatus - Google Patents
Light guide plate, backlight module and liquid crystal display apparatus Download PDFInfo
- Publication number
- CN104181630A CN104181630A CN201310195488.3A CN201310195488A CN104181630A CN 104181630 A CN104181630 A CN 104181630A CN 201310195488 A CN201310195488 A CN 201310195488A CN 104181630 A CN104181630 A CN 104181630A
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- light
- guide plate
- incidence surface
- light guide
- joint face
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Abstract
The invention relates to a light guide plate, comprising a cuboid effective visual part and a light coupling part adjacent to the visual part. The visual part and the light coupling part are provided with a same bottom surface. The visual part comprises a light-out surface parallel with the bottom surface and a side surface vertically connected with the bottom surface and the light-out surface. The light coupling part comprises a first light-in surface, a second light-in surface, a first connection surface and a second connection surface. The first light-in surface is parallel with and opposite to the side surface. The second light-in surface is vertical to the first light-in surface and extends along a direction away from the side surface. The second light-in surface and the bottom surface are respectively arranged on two reverse terminals of the first light-in surface. The first connection surface extends along a direction from a reverse terminal of the second light-in surface and the first light-in surface near the side surface, and the first connection surface and the first light-in surface are respectively arranged on the two sides of the second light-in surface. The second connection surface is connected with the first connection surface and the light-out surface. The invention also relates to a backlight module and a liquid crystal display apparatus.
Description
Technical field
The present invention relates to demonstration field, relate in particular to a kind of light guide plate, a kind of backlight module and a kind of liquid crystal indicator with this backlight module with this light guide plate.
Background technology
Now, electronic product, particularly consumption electronic products, towards light, thin, short, little future development.For this reason, the various spare parts of electronic product, for example side direction light inlet light guide plate, is also developing to slimming.But, due to light source send only to all directions propagate, in the time of light guide plate attenuation, the part light that causes light source to send is spread in air, and can not enter light guide plate, cause light utilization efficiency low.
Summary of the invention
In view of this, be necessary to provide a kind of light guide plate, backlight module and liquid crystal indicator that can effectively improve light utilization efficiency.
A kind of light guide plate, comprises effective visible section of cuboid and the optically-coupled portion adjacent with this visible section of being.This visible section and this optically-coupled portion have common bottom surface.This visible section comprises opposing exiting surface parallel with this bottom surface and the vertical side that connects this bottom surface and this exiting surface.This optically-coupled portion comprises the first incidence surface, the second incidence surface, the first joint face and the second joint face.This first incidence surface and this parallel sided are opposing.Vertical this first incidence surface of this second incidence surface also extends towards the direction away from this side, and this second incidence surface and this bottom surface lay respectively at the opposing two ends of this first incidence surface.This first joint face extends towards the direction that approaches this side with the opposing one end of this first incidence surface from this second incidence surface, and this first joint face and this first incidence surface lay respectively at the both sides of this second incidence surface.This second joint face connects this first joint face and this exiting surface.
A kind of backlight module, comprises light guide plate as above and at least one light source.This at least one light source is positioned at the light-emitting area of this first incidence surface place and this at least one light source all towards this first incidence surface.This second incidence surface shelters from this at least one light source completely.
A kind of liquid crystal indicator, comprises backlight module as above and is arranged on the liquid crystal panel on this exiting surface.
Compared to prior art, light guide plate of the present invention, backlight module and liquid crystal indicator be provided with the first incidence surface and vertically this first incidence surface to this two incidence surface extending away from this side surface direction, and the light-emitting area that makes this at least one light source is towards this first incidence surface and make this second incidence surface shelter from this at least one light source completely, so that this optically-coupled portion can fully absorb the light that this at least one light source sends, thereby effectively improve light utilization efficiency.
Brief description of the drawings
Fig. 1 is the side view of liquid crystal indicator provided by the invention.
Fig. 2 is the vertical view of the liquid crystal indicator in Fig. 1.
Main element symbol description
| Liquid crystal indicator | 100 |
| Backlight module | 10 |
| Light guide plate | 12 |
| Visible section | 120 |
| Optically-coupled portion | 121 |
| Bottom surface | 122 |
| Exiting surface | 123 |
| Side | 124 |
| The first incidence surface | 125 |
| The second incidence surface | 126 |
| The first joint face | 127 |
| The second joint face | 128 |
| Reflection horizon | 129 |
| Light source | 14 |
| Optical diaphragm group | 16 |
| Reflecting plate | 162 |
| Diffusion sheet | 164 |
| Brightness enhancement film | 166 |
| Liquid crystal panel | 20 |
Following embodiment further illustrates the present invention in connection with above-mentioned accompanying drawing.
Embodiment
To be described in further detail embodiment of the present invention below in conjunction with accompanying drawing.
Refer to Fig. 1 and Fig. 2, it has disclosed the liquid crystal indicator 100 that the present invention's one preferred implementation provides.This liquid crystal indicator 100 comprises a backlight module 10 and a liquid crystal panel 20.
This backlight module 10 comprises a light guide plate 12, multiple light source 14 and an optical diaphragm group 16.
This light guide plate 12 comprises an effective visible section 120 and an optically-coupled portion 121 adjacent with this visible section 120.This visible section 120 is cuboid tabular.This visible section 120 and this integrative-structure of optically-coupled portion 121 for making by injection molding method, and there is common bottom surface 122.In present embodiment, this light guide plate 12 is made up of resin material.
This visible section 120 comprises an exiting surface 123 and a side 124.This exiting surface 123 is parallel opposing with this bottom surface 122.Vertical this bottom surface 122 and this exiting surface 123 of connecting in this side 124.
This optically-coupled portion 121 comprises first incidence surface 125, one the second incidence surface 126, one the first joint face 127, the second joint face 128 and a reflection horizon 129.This first incidence surface 125 is parallel opposing with this side 124.Vertical this first incidence surface 125 of this second incidence surface 126 extends towards the direction away from this side 124, and this second incidence surface 126 and this bottom surface 122 lay respectively at the opposing two ends of this first incidence surface 125.This first joint face 127 extends towards the direction that approaches this side 124 with the opposing one end of this first incidence surface 125 from this second incidence surface 126, and this first joint face 127 and this first incidence surface 125 lay respectively at the both sides of this second incidence surface 126, and the angle between this first joint face 127 and this second incidence surface 126 is acute angle.This second joint face 128 connects this first joint face 127 and this exiting surface 123.In present embodiment, the angle between this second joint face 128 and this exiting surface 123 is obtuse angle.This reflection horizon 129 is formed on this first joint face 127 and this second joint face 128 by the mode of plated film, and this reflection horizon 129 covers this first joint face 127 and this second joint face 128 completely.This reflection horizon 129 is by highly reflective material, and for example aluminium or nickel are made.In other embodiments, this reflection horizon 129 also can be formed on a flexible PCB, and along with this flexible PCB sticks on this first joint face 127 and this second joint face 128 together.
The plurality of light source 14 is positioned at the light-emitting area of these the first incidence surface 125 places and the plurality of light source 14 all towards this first incidence surface 125.In present embodiment, the plurality of light source 14 is for being arranged in the light emitting diode (light emitting diode, LED) of straight line.This second incidence surface 126 shelters from the upper end of the plurality of light source 14 completely.Be understandable that, it is multiple in present embodiment that the quantity of light source 14 is not limited to, and can also be only one.When light source 14 is while being multiple, this backlight module 10 can make large scale, and in the time that light source 14 is only one, this backlight module 10 can make small size.
This optical diaphragm group 16 comprises a reflecting plate 162, diffusion sheet 164 and a brightness enhancement film 166.This reflecting plate 162 be positioned at this light guide plate 12 under and relative with this bottom surface 122 and the plurality of light source 14, this reflecting plate 162 blocks the lower end of the plurality of light source 14 completely.This reflecting plate 162 for light that the plurality of light source 14 is sent directly the part of this reflecting plate 162 of directive reflex in this light guide plate 12 and will return this light guide plate 12 from the light reflection of these bottom surface 122 outgoing.This diffusion sheet 164 is positioned on this exiting surface 123, and this brightness enhancement film 166 is positioned on this diffusion sheet 164.This diffusion sheet 164 and this brightness enhancement film 166 are made by resin material, in this diffusion sheet 164, are distributed with diffusion particle (not shown).This liquid crystal panel 20 is positioned in this brightness enhancement film 166.
When use, the light that the plurality of light source 14 sends is entered in this optically-coupled portion 121 by this first incidence surface 125 and this second incidence surface 126, this optically-coupled portion 121 imports light in this visible section 120, light is scattered and reflects or be reflected back to continue to be scattered and reflect finally after this visible section 120 by this reflecting plate 162 from these bottom surface 122 outgoing and penetrates from this exiting surface 123 in this visible section 120, the light penetrating from this exiting surface 123 spreads light through this diffusion sheet 164 and this brightness enhancement film 166 transfers the direction of propagation of light just to after liquid crystal panel 20 to, illuminate this liquid crystal panel 20.Be appreciated that this reflection horizon 129 can omit, now, entering light in this optically-coupled portion 121 can be entered in this visible section 120 and finally penetrate from this exiting surface 123 by this first joint face 127 and this second joint face 128 total reflections.
This liquid crystal indicator 100 be provided with this first incidence surface 125 and vertically this first incidence surface to this second incidence surface 126 extending away from this side 124 directions, and the light-emitting area that makes light source 14 is towards this first incidence surface 125 and make this second incidence surface 126 fully shading light sources 14, so that this optically-coupled portion 121 can fully absorb the light that light source 14 sends, thereby effectively improve light utilization efficiency.In addition, in the light that this reflecting plate 162 can send light source 14, do not enter in light guide plate 12 and directly the part of this reflecting plate 162 of directive reflex in this light guide plate 12, these light are finally from these exiting surface 123 outgoing, thereby further improve light utilization efficiency.And, the setting in this reflection horizon 129 can will directly be returned this optically-coupled portion 121 or this visible section 120 and finally make it penetrate from this exiting surface 123 from the light reflection of this first joint face 127 and these the second joint face 128 outgoing, thereby further improves light utilization efficiency.
Be understandable that, for the person of ordinary skill of the art, can make other various corresponding changes and distortion by technical conceive according to the present invention, and all these change the protection domain that all should belong to the claims in the present invention with distortion.
Claims (10)
1. a light guide plate, comprise effective visible section of cuboid and the optically-coupled portion adjacent with this visible section of being, this visible section and this optically-coupled portion have common bottom surface, this visible section comprises opposing exiting surface parallel with this bottom surface and the vertical side that connects this bottom surface and this exiting surface, this optically-coupled portion comprises the first incidence surface, the second incidence surface, the first joint face and the second joint face, this first incidence surface and this parallel sided are opposing, vertical this first incidence surface of this second incidence surface also extends towards the direction away from this side, this second incidence surface and this bottom surface lay respectively at the opposing two ends of this first incidence surface, this first joint face extends towards the direction that approaches this side with the opposing one end of this first incidence surface from this second incidence surface, and this first joint face and this first incidence surface lay respectively at the both sides of this second incidence surface, this second joint face connects this first joint face and this exiting surface.
2. light guide plate as claimed in claim 1, is characterized in that, this light guide plate is made up of resin material.
3. light guide plate as claimed in claim 1, is characterized in that, this optically-coupled portion and this visible section are the integrative-structure making by injection molding method.
4. light guide plate as claimed in claim 3, is characterized in that, this light guide plate also comprises reflection horizon, and this reflection horizon is formed on this first joint face and this second joint face and covers this first joint face and this second joint face completely.
5. a backlight module, comprise light guide plate and at least one light source as described in any one in claim 1 to 4, this at least one light source is positioned at the light-emitting area of this first incidence surface place and this at least one light source all towards this first incidence surface, and this second incidence surface shelters from this at least one light source completely.
6. backlight module as claimed in claim 5, it is characterized in that, this backlight module also comprises reflecting plate, this reflecting plate is relative with this bottom surface and this at least one light source, this reflecting plate for light that this at least one light source is sent directly the part light reflection of this reflecting plate of directive to this light guide plate and will return this light guide plate from the light reflection of this bottom surface outgoing.
7. backlight module as claimed in claim 6, is characterized in that, this backlight module also comprises and is arranged on the diffusion sheet on this exiting surface and is arranged on the brightness enhancement film on this diffusion sheet.
8. a liquid crystal indicator, comprises backlight module as claimed in claim 5 and is arranged on the liquid crystal panel on this exiting surface.
9. liquid crystal indicator as claimed in claim 8, it is characterized in that, this liquid crystal indicator also comprises reflecting plate, this reflecting plate is relative with this bottom surface and this at least one light source, this reflecting plate for light that this at least one light source is sent directly the part light reflection of this reflecting plate of directive to this light guide plate and will return this light guide plate from the light reflection of this bottom surface outgoing.
10. liquid crystal indicator as claimed in claim 9, it is characterized in that, this liquid crystal indicator is also provided with diffusion sheet and brightness enhancement film, this diffusion sheet and this brightness enhancement film are between this exiting surface and this liquid crystal panel, and this diffusion sheet and the direction of this brightness enhancement film along this exiting surface to this liquid crystal panel are arranged in order.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310195488.3A CN104181630A (en) | 2013-05-24 | 2013-05-24 | Light guide plate, backlight module and liquid crystal display apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310195488.3A CN104181630A (en) | 2013-05-24 | 2013-05-24 | Light guide plate, backlight module and liquid crystal display apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104181630A true CN104181630A (en) | 2014-12-03 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310195488.3A Pending CN104181630A (en) | 2013-05-24 | 2013-05-24 | Light guide plate, backlight module and liquid crystal display apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104181630A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106094076A (en) * | 2016-08-19 | 2016-11-09 | 武汉华星光电技术有限公司 | Brightness enhancement film and backlight module |
| US10520660B2 (en) | 2015-10-06 | 2019-12-31 | Corning Incorporated | Spatial multiplexing coupler for light guide plates |
-
2013
- 2013-05-24 CN CN201310195488.3A patent/CN104181630A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10520660B2 (en) | 2015-10-06 | 2019-12-31 | Corning Incorporated | Spatial multiplexing coupler for light guide plates |
| CN106094076A (en) * | 2016-08-19 | 2016-11-09 | 武汉华星光电技术有限公司 | Brightness enhancement film and backlight module |
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| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20141203 |