CN205139529U - Display backlight unit - Google Patents
Display backlight unit Download PDFInfo
- Publication number
- CN205139529U CN205139529U CN201520937018.4U CN201520937018U CN205139529U CN 205139529 U CN205139529 U CN 205139529U CN 201520937018 U CN201520937018 U CN 201520937018U CN 205139529 U CN205139529 U CN 205139529U
- Authority
- CN
- China
- Prior art keywords
- guide plate
- light guide
- display backlight
- backlight module
- sealing frame
- 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.)
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Links
- 230000003287 optical effect Effects 0.000 claims abstract description 37
- 238000007789 sealing Methods 0.000 claims description 38
- 239000000463 material Substances 0.000 claims description 19
- 239000012788 optical film Substances 0.000 claims description 19
- 239000011248 coating agent Substances 0.000 claims description 13
- 238000000576 coating method Methods 0.000 claims description 13
- 239000006260 foam Substances 0.000 claims description 6
- 239000004973 liquid crystal related substance Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 238000009434 installation Methods 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000003760 hair shine Effects 0.000 description 1
- 238000005286 illumination Methods 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
Abstract
The utility model relates to a display backlight unit is including frame, optical components and light source. The frame has bottom and sealed frame, sealed frame is located the edge of bottom. Optical components includes the light guide plate, optical components sets up on the bottom, sealed frame with the light guide plate connect with the frame with form the confined cavity between the optical components. The light source sets up in the cavity, with the light guide plate is relative. The utility model provides a display backlight unit can prevent the light leak.
Description
Technical field
The utility model belongs to LCD Technology field, particularly, relates to a kind of display backlight module.
Background technology
Liquid crystal display has now become the display apparatus of main flow, and it is very extensive in the application of the electronic products such as computer, TV, mobile phone.Because liquid crystal itself is not luminous, in order to make the normal display map of liquid crystal display, in liquid crystal display, arrange backlight module is necessary.Backlight module can provide sufficient, uniform light for liquid crystal.
In existing liquid crystal display, those skilled in the art are normally used is edge-light-type backlight, and this backlight is arranged on light guide plate side by linear or point-like luminophor and is formed, and the light injected from the side can be guided to front injection by light guide plate.According to the performance requirement of reality, Double-edge type or three limit formula backlights can be made.Especially, in this backlight technology, luminophor needs relative with the center side of light guide plate usually, can ensure good optical effect like this, can not cause the problem such as light leak, insufficient light.If the installation site of luminophor deviate from the position just right with light guide plate, then easily there is light leakage phenomena.Fig. 1 shows a kind of edge-light-type backlight, comprising luminophor 01, because the installation site of luminophor 01 upwards offsets, does not aim at light guide plate, so make a part of light directly penetrate from the gap of framed structure, cannot enter light guide plate.Like this, there will be light leakage phenomena and reduce the utilization factor of light, the problem such as cause the backlight illumination of display screen to reduce, uneven.
So, be necessary to improve the structure of edge-light-type backlight, avoid light to spill, or prevent the installation site of luminophor from departing from, thus ensure that display has abundance, stable backlight, there will not be the problem of brightness deterioration or light and shade inequality.
Utility model content
A technical matters to be solved in the utility model avoids the light of backlight to spill.
According to an aspect of the present utility model, provide a kind of display backlight module, comprising:
Framework, described framework has bottom and sealing frame, and described sealing frame is positioned at the edge of described bottom;
Optical module, described optical module comprises light guide plate, and described optical module is arranged on said bottom, and described sealing frame is connected to form closed chamber between described framework and described optical module with described light guide plate;
Light source, described light source is arranged in the cavity, relative with described light guide plate.
Alternatively, described sealing frame can be connected with the upper surface of described light guide plate or side surface.
Preferably, the inside surface of described sealing frame can be coated with reflecting coating.
Especially, described framework can comprise heat sink, and described heat sink forms bottom and the sealing frame of described framework.
Alternatively, described framework can comprise top frame, and described top frame is overlying on above described optical module.Described top frame can form described sealing frame.
Preferably, described top frame can be provided with foam, and described foam is relative with the upper surface of described optical module.
Alternatively, described light source is LED lamp bar, and described LED lamp bar comprises lamp plate and lamp pearl, and the height of described chamber and the width of described lamp plate match, and described lamp pearl is relative with the side of described light guide plate.
Preferably, described optical module comprises reflectance coating and optical film material, and described reflectance coating is arranged on the lower surface of described light guide plate, and described optical film material is arranged on the upper surface of described light guide plate, and described reflectance coating contacts with the bottom of described framework.More preferably, described optical film material is positioned at outside described chamber completely.
A technique effect of the present utility model is, the light envelope that light source can penetrate by described display backlight module in the chamber, prevents light leakage phenomena, avoids the waste of light.
By referring to the detailed description of accompanying drawing to exemplary embodiment of the present utility model, further feature of the present utility model and advantage thereof will become clear.
Accompanying drawing explanation
What form a part for instructions drawings describes embodiment of the present utility model, and together with the description for explaining principle of the present utility model.
Fig. 1 is the fragmentary side cross-sectional view of edge-light-type backlight in prior art;
Fig. 2 is the side partial sectional view of display backlight module in the utility model specific embodiment;
Fig. 3 is the side partial sectional view of display backlight module in the utility model specific embodiment;
Fig. 4 is the enlarged drawing of Fig. 3 in the utility model specific embodiment.
Embodiment
Various exemplary embodiment of the present utility model is described in detail now with reference to accompanying drawing.It should be noted that: unless specifically stated otherwise, otherwise positioned opposite, the numerical expression of the parts of setting forth in these embodiments and step and numerical value do not limit scope of the present utility model.
Illustrative to the description only actually of at least one exemplary embodiment below, never as any restriction to the utility model and application or use.
The technology and equipment known for person of ordinary skill in the relevant may not discuss in detail, but in the appropriate case, described technology and equipment should be regarded as a part for instructions.
In all examples with discussing shown here, any occurrence should be construed as merely exemplary, instead of as restriction.Therefore, other example of exemplary embodiment can have different values.
It should be noted that: represent similar terms in similar label and letter accompanying drawing below, therefore, once be defined in an a certain Xiang Yi accompanying drawing, then do not need to be further discussed it in accompanying drawing subsequently.
The utility model provides a kind of display backlight module, comprising framework, optical module and light source.Described framework has bottom and sealing frame, and described sealing frame is positioned at the edge of described bottom and upwards extends from described bottom, and described optical module at least comprises light guide plate.Described framework is for carrying described optical module and light source, and described optical module is arranged on the bottom of described framework, and described optical module is near the edge of described bottom.The edge conjunction of described sealing frame and described optical module, thus closed chamber is formed between described framework and described optical module.Described light source is arranged in the cavity, and light source is towards the side of described light guide plate.Because described chamber is hermetically-sealed construction, so the light of light source injection can not spill from described chamber.If light source deviate from when loading chamber the position aligned with described light guide plate, the light that part penetrates from light source directly can not inject light guide plate, but described chamber is closed, and light also can be injected in described light guide plate through reflection.The utility model prevents light leakage phenomena by arranging closed cavity between framework and optical module, and, even if skew appears in the rigging position of light source, the amount of incident of light also can not be had a strong impact on.
Particularly, as shown in Figure 2, the bottom of described framework 11 is in plane, and described sealing frame 12 upwards extends from bottom 11 and surrounds a closed chamber 3 again with optical module.Described light source 4 paste be arranged on sealing frame 12 sidewall on and relative with light guide plate 21, light source 4 penetrate light usually can directly inject light guide plate 21 from the side of light guide plate 21.Light guide plate 21 changes the direction of light, and light penetrates from the upper side.In the embodiment illustrated in figure 2, described sealing frame 12 is distance contact with the upper surface of light guide plate 21 from the top of described light guide plate 21 to downward-extension one end, and like this, the space of described chamber 3 more greatly, is convenient to arrange light source 4.In other embodiment of the present utility model, described sealing frame 12 also directly can extend to the side of light guide plate 21, and also can be combined into the chamber 3 of sealing with light guide plate 21, in this case, the space of chamber 3 is less, and the space that sealing frame 12 takies is also less.Those skilled in the art according to the concrete condition of product and performance requirement, can select the planform of sealing frame.Another technique effect of this display backlight face mould group is, owing to being formed with closed chamber 3, chamber 3 can limit the position of light source 4, shown in Fig. 2 is that light source 4 is just to the situation of light guide plate 21, shown in Fig. 3 is the situation that light source 4 upwards offsets relative to light guide plate 21, visible light source 4 can not substantial deviation just to the position of light guide plate 21, so decrease the waste of light.In addition, shown in accompanying drawing of the present utility model is the partial sectional view of described display backlight module, the side of optical module is merely illustrated in figure, the utility model does not limit this backlight module and be provided with chamber and light source on several side, and those skilled in the art can select according to actual conditions.
Preferably, in order to increase the utilization factor of light further, reducing light losing, the inside surface of described sealing frame 12 can be coated with reflecting coating.If do not have reflecting coating in sealing frame 12, the light that a part does not directly inject light guide plate 21 can be absorbed by sealing frame 12, only has remaining some light can enter light guide plate 21 through the reflection of sealing frame 12.If the inside surface of sealing frame 12 is coated with reflecting coating, as shown in Figure 4, then greatly can strengthen the reflecting effect of sealing frame 12, light finally can enter light guide plate 21 through the reflection of sealing frame 12.
Alternatively, as in Figure 2-4, in this embodiment, described framework comprises heat sink 5, and described heat sink 5 constitutes bottom 11 and the sealing frame 12 of described framework.Heat sink 5 can provide good radiating effect for display backlight module.Preferably, described framework can also comprise top frame 13, and described top frame 13 is overlying on the top of described optical module, to play a protective role to optical module.In the embodiment shown in Fig. 2-4, described top frame 13 is fixed on heat sink 5, and in other embodiment of the present utility model, when described framework also comprises other structure, described top frame 13 can also be fixed in other structure.Especially, described top frame 13 can replace heat sink to form described sealing frame 12.In this case, the bottom 11 of described framework is made up of heat sink, and described top frame 13 is arranged on described heat sink, and a part for top frame 13 is connected with described light guide plate 21, forms the chamber 3 of sealing.Another part of described top frame 13 can continue to think that the center of optical module extends one section, to play a protective role.
More preferably; described top frame 13 can be provided with foam 131, and to protect the upper surface of optical module, the upper surface of described optical module is often provided with optical film material 23; optical film material 23 is very responsive to extraneous contact such as impact, pressure, unstable properties.Foam 131 can alleviate the pressure that optical film material 23 is subject to when assembling, carrying, use, improves the stability of optical module.
Alternatively, as in Figure 2-4, light source 4 described in the utility model can be LED lamp bar, and described lamp bar comprises lamp plate 41 and lamp pearl 42.Described lamp plate 41 is provided with circuit and plays carrying effect to lamp pearl 42, described lamp pearl 42 is luminophor.The height of described chamber 3 can match with the width of described lamp plate 41, and when making lamp plate 41 penetrate chamber 3, position is substantially fixing, and play the positioning action to lamp pearl 42 and light guide plate 21, described lamp pearl 42 is relative with the side of described light guide plate 21.
In addition, as shown in Figure 2,3, described optical module can also comprise reflectance coating 22 and optical film material 23, and described reflectance coating 22 is positioned at the lower surface of described light guide plate 21, and it is set directly on the bottom 11 of described framework.Described optical film material 23 is arranged on the upper surface of described light guide plate 21.Especially, described sealing frame 12 does not contact with described optical film material 23, but direct contact with light guide plate 21 surrounds chamber 3, and reason is, optical film material 23 pairs of pressure are very responsive on the one hand, and sealing frame 12 contacts with optical film material 23 and likely impacts its optical property; On the other hand, if described light source 4 upwards offsets, then light likely shines directly on optical film material 23, and then causes the waste of light.So preferably, described optical film material 23 can be positioned at outside described chamber 3 completely, and sealing frame 12 does not contact with optical film material 23, avoids above-mentioned situation.Such as, as in Figure 2-4, the size of described optical film material 23 can be slightly less than described light guide plate 21, makes the edge of light guide plate 21 not cover optical film material 23, connects for sealing frame 12.
Although be described in detail specific embodiments more of the present utility model by example, it should be appreciated by those skilled in the art, above example is only to be described, instead of in order to limit scope of the present utility model.It should be appreciated by those skilled in the art, when not departing from scope and spirit of the present utility model, above embodiment can be modified.Scope of the present utility model is limited by claims.
Claims (10)
1. a display backlight module, is characterized in that, comprising:
Framework, described framework has bottom (11) and sealing frame (12), and described sealing frame (12) is positioned at the edge of described bottom (11);
Optical module, described optical module comprises light guide plate (21), described optical module is arranged on described bottom (11), and described sealing frame (12) is connected between described framework and described optical module, form closed chamber (3) with described light guide plate (21);
Light source (4), described light source (4) is arranged in described chamber (3), relative with described light guide plate (21).
2. display backlight module according to claim 1, is characterized in that, upper surface or the side surface of described sealing frame (12) and described light guide plate (21) are connected.
3. display backlight module according to claim 1, is characterized in that, the inside surface of described sealing frame (12) is coated with reflecting coating.
4. display backlight module according to claim 1, is characterized in that, described framework comprises heat sink (5), and described heat sink (5) forms bottom (11) and the sealing frame (12) of described framework.
5. display backlight module according to claim 1, is characterized in that, described framework comprises top frame (6), and described top frame (6) is overlying on above described optical module.
6. display backlight module according to claim 5, is characterized in that, described top frame (6) forms described sealing frame (12).
7. display backlight module according to claim 5, is characterized in that, described top frame (6) is provided with foam (131), and described foam (131) is relative with the upper surface of described optical module.
8. display backlight module according to claim 1, it is characterized in that, described light source (4) is LED lamp bar, described LED lamp bar comprises lamp plate (41) and lamp pearl (42), the height of described chamber (3) and the width of described lamp plate (41) match, and described lamp pearl (42) is relative with the side of described light guide plate (21).
9. display backlight module according to claim 1, it is characterized in that, described optical module comprises reflectance coating (22) and optical film material (23), described reflectance coating (22) is arranged on the lower surface of described light guide plate (21), described optical film material (23) is arranged on the upper surface of described light guide plate (21), and described reflectance coating (22) contacts with the bottom (11) of described framework.
10. display backlight module according to claim 9, is characterized in that, described optical film material (23) is positioned at outside described chamber (3) completely.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520937018.4U CN205139529U (en) | 2015-11-20 | 2015-11-20 | Display backlight unit |
| PCT/CN2016/088629 WO2017084355A1 (en) | 2015-11-20 | 2016-07-05 | Display backlight module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520937018.4U CN205139529U (en) | 2015-11-20 | 2015-11-20 | Display backlight unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205139529U true CN205139529U (en) | 2016-04-06 |
Family
ID=55625305
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520937018.4U Active CN205139529U (en) | 2015-11-20 | 2015-11-20 | Display backlight unit |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN205139529U (en) |
| WO (1) | WO2017084355A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017084355A1 (en) * | 2015-11-20 | 2017-05-26 | 乐视控股（北京）有限公司 | Display backlight module |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101671182B1 (en) * | 2010-04-12 | 2016-11-02 | 삼성디스플레이 주식회사 | A backlight unit and an lcd module having the same |
| KR101750386B1 (en) * | 2010-12-22 | 2017-06-26 | 삼성디스플레이 주식회사 | Light emitting diode package, light source module having the same and backlight assembly having the same |
| CN102313209A (en) * | 2011-09-09 | 2012-01-11 | 深圳市华星光电技术有限公司 | Backlight module group and liquid crystal display |
| CN102691934B (en) * | 2012-05-21 | 2014-09-24 | 深圳市华星光电技术有限公司 | Backlight module and corresponding liquid crystal liquid device |
| CN102798093B (en) * | 2012-07-17 | 2015-06-10 | 深圳市华星光电技术有限公司 | Rear panel, backlight module and liquid crystal display device |
| CN102767762B (en) * | 2012-07-27 | 2014-10-29 | 深圳市华星光电技术有限公司 | Backlight module |
| CN205139529U (en) * | 2015-11-20 | 2016-04-06 | 乐视致新电子科技（天津）有限公司 | Display backlight unit |
-
2015
- 2015-11-20 CN CN201520937018.4U patent/CN205139529U/en active Active
-
2016
- 2016-07-05 WO PCT/CN2016/088629 patent/WO2017084355A1/en active Application Filing
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017084355A1 (en) * | 2015-11-20 | 2017-05-26 | 乐视控股（北京）有限公司 | Display backlight module |
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| Publication number | Publication date |
|---|---|
| WO2017084355A1 (en) | 2017-05-26 |
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Address after: 300453 Tianjin Binhai New Area, Tianjin Eco-city, No. 126 Animation and Animation Center Road, Area B1, Second Floor 201-427 Patentee after: Xinle Visual Intelligent Electronic Technology (Tianjin) Co.,Ltd. Address before: 300467, Tianjin Binhai New Area eco city road 126 anime Road, B1 District, 2 floor, 201-427 Patentee before: LE SHI ZHI XIN ELECTRONIC TECHNOLOGY (TIANJIN) Ltd. Address after: Room 301-1, Room 301-3, Area B2, Animation Building, No. 126 Animation Road, Zhongxin Eco-city, Tianjin Binhai New Area, Tianjin Patentee after: LE SHI ZHI XIN ELECTRONIC TECHNOLOGY (TIANJIN) Ltd. Address before: 300453 Tianjin Binhai New Area, Tianjin Eco-city, No. 126 Animation and Animation Center Road, Area B1, Second Floor 201-427 Patentee before: Xinle Visual Intelligent Electronic Technology (Tianjin) Co.,Ltd. |
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Effective date of registration: 20210201 Granted publication date: 20160406 |
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