CN202469772U - Direct-light-type backlight source and displaying device - Google Patents
Direct-light-type backlight source and displaying device Download PDFInfo
- Publication number
- CN202469772U CN202469772U CN2012201153354U CN201220115335U CN202469772U CN 202469772 U CN202469772 U CN 202469772U CN 2012201153354 U CN2012201153354 U CN 2012201153354U CN 201220115335 U CN201220115335 U CN 201220115335U CN 202469772 U CN202469772 U CN 202469772U
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- type backlight
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- 238000004020 luminiscence type Methods 0.000 claims description 10
- 239000002390 adhesive tape Substances 0.000 claims description 5
- 230000000694 effects Effects 0.000 abstract description 5
- 230000003287 optical effect Effects 0.000 abstract description 3
- 230000002035 prolonged effect Effects 0.000 abstract description 3
- 230000005855 radiation Effects 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 description 5
- 239000000203 mixture Substances 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 239000004973 liquid crystal related substance Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000012788 optical film Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Abstract
The utility model discloses a direct-light-type backlight source and a displaying device and relates to the technical field of display. The direct-light-type backlight source comprises a light source and a back plate, wherein the back plate is provided with a through hole and the light source is arranged in the through hole. According to the direct-light-type backlight source and the displaying device disclosed by the utility model, the light source is embedded into the back plate, so that the light mixing height is reduced and the effect that the thickness of the direct-light-type backlight source becomes thinner is realized; and therefore, the heat radiation is good and simultaneously the cost is reduced. According to the direct-light-type backlight source and the displaying device disclosed by the utility model, the light source is basically leveled with a bottom reflection sheet and the light mixing distance is effectively prolonged; and the mixed light is more uniform and a better optical effect can be obtained.
Description
Technical field
The utility model relates to the Display Technique field, relates in particular to a kind of direct-light-type backlight and display unit.
Background technology
At present, (Flat Panel Display, FPD) in the technology, (Liquid Crystal Display LCD) occupy dominant position, and transmission type LCD is again the main flow of current LCD technology in liquid crystal display in FPD.Because LCD itself is not luminous, so backlight is absolutely necessary for transmission type LCD.Traditional LCD adopts cold-cathode fluorescence lamp (Cold Cathode Fluorescent Lamps usually; CCFL) as light source; Along with light emitting diode (Light Emitting Diode; LED) develop rapidly of manufacturing and encapsulation technology, LED replaces the main flow that CCFL becomes backlight gradually because of advantages such as its luminous efficiency is high, the life-span is long, colour gamut is wide, no mercury.
According to the difference of distribution of light sources position, backlight can be divided into side-light type back light and direct-light-type backlight.The LED of side-light type back light is installed in the side of LGP plate, use LGP to carry out mixed light, colour mixture, and the white light that colour mixture is formed is coupled to panel.In this structure, efficient and brightness uniformity can reduce greatly during backlight oversize.And the LED of direct-light-type backlight is installed in the bottom surface of backlight module, and its bright dipping is coupled on the panel easily expeditiously, in large-scale LCD is used, can guarantee uniform Luminance Distribution, and obtain energy-conservation effect.
As depicted in figs. 1 and 2, direct-light-type backlight comprises compositions such as backboard 1, printed circuit board (PCB) 2, LED luminescence unit 3 and optical film material 4.The printed circuit board (PCB) 1 of typical direct-light-type backlight LED needs to fit or screw is fixed on the backboard 1, need be connected with heat conduction adhesive tape 5 usually between printed circuit board (PCB) 2 and the backboard 1, with better heat radiation.Certain mixed light height is provided with optical film materials 4 such as diffuser plate or the like.The bad processing of the thermal diffusivity of such direct-light-type backlight, mixed light height also are difficult to control, also do not reach ultra-thin effect, are difficult to satisfy existing display unit to ultra-thin Development Trend requirement.
The utility model content
The technical problem that (one) will solve
The technical problem that the utility model will solve is: provide a kind of and can realize ultra-thin, good heat dissipation and lower-cost direct-light-type backlight and display unit.
(2) technical scheme
For addressing the above problem, the utility model provides a kind of direct-light-type backlight, comprising: light source and backboard, said backboard is provided with through hole, places said through hole said light source.
Preferably, said backlight also comprises: printed circuit board (PCB), said light source is electrically connected with said printed circuit board (PCB).
Preferably, said printed circuit board (PCB) is fixed on the back side opposite with light-emitting face of said backboard.
Preferably, remove the part that is connected with said light source between said printed circuit board (PCB) and the said backboard and be outside equipped with the heat conduction adhesive tape.
Preferably, said light source is the LED luminescence unit.
The utility model also provides a kind of display unit, and this display unit comprises above-mentioned direct-light-type backlight.
(3) beneficial effect
Direct-light-type backlight of the utility model and display unit are embedded into light source in the backboard, when reducing the mixed light height, have realized the effect of direct-light-type backlight integral thickness attenuation, have reduced cost in the time of good heat dissipation again.In the direct-light-type backlight and display unit of the utility model, light source can flush with end reflector plate basically, has effectively prolonged light mixing distance, can make the light behind the mixed light more even, can reach better optical effect.
Description of drawings
Fig. 1 is the structural representation of traditional direct-light-type backlight;
Fig. 2 is the generalized section at direct-light-type backlight backboard place shown in Figure 1;
Fig. 3 is the generalized section according to the direct-light-type backlight of a kind of embodiment of the utility model.
The specific embodiment
Direct-light-type backlight that the utility model provides and display unit specify as follows in conjunction with accompanying drawing and embodiment.
According to the direct-light-type backlight of a kind of embodiment of the utility model, comprising: light source 3 and backboard 1, in the backlight of this embodiment, light source is preferably the LED luminescence unit.As shown in Figure 3, backboard 1 is provided with the through hole of ccontaining LED luminescence unit, and the LED luminescence unit places this through hole.
In the direct-light-type backlight of the utility model; Each LED luminescence unit all is embedded in the through hole on the backboard 1 from the lateral surface (back side of light-emitting face) of backboard 1 fully; Thereby, when reducing the height of mixed light, realized the effect of direct-light-type backlight integral thickness attenuation.
In addition, this backlight also comprises: printed circuit board (PCB) 2, and each LED luminescence unit all is electrically connected with printed circuit board (PCB) 2; And printed circuit board (PCB) 2 is fixed on the lateral surface of backboard 1; In order to dispel the heat, remove the part that is connected with the LED luminescence unit between printed circuit board (PCB) 2 and the backboard 1 and be outside equipped with heat conduction adhesive tape 5, not only solve the technical problem of backlight heat radiation difficulty; And need the not dispel the heat attaching of adhesive tape 5 of the corresponding part of LED luminescence unit, reduced cost.
The utility model also provides a kind of display unit, and this display unit comprises above-mentioned direct-light-type backlight, thereby; In this display unit, light source can flush with end reflector plate basically, has effectively prolonged light mixing distance; Can make the light behind the mixed light more even, can reach better optical effect.Said display unit can be any LCD that needs to use direct-light-type backlight such as mobile phone, DPF, panel computer, LCD TV etc., LCD, at this not as restriction to the utility model technical scheme.
Above embodiment only is used to explain the utility model; And be not the restriction to the utility model; The those of ordinary skill in relevant technologies field under the situation of spirit that does not break away from the utility model and scope, can also be made various variations and modification; Therefore all technical schemes that are equal to also belong to the category of the utility model, and the scope of patent protection of the utility model should be defined by the claims.
Claims (6)
1. direct-light-type backlight comprises: light source and backboard, it is characterized in that said backboard is provided with through hole, and said light source places said through hole.
2. direct-light-type backlight as claimed in claim 1 is characterized in that, said backlight also comprises: printed circuit board (PCB), said light source is electrically connected with said printed circuit board (PCB).
3. direct-light-type backlight as claimed in claim 2 is characterized in that, said printed circuit board (PCB) is fixed on the back side opposite with light-emitting face of said backboard.
4. direct-light-type backlight as claimed in claim 2 is characterized in that, removes the part that is connected with said light source between said printed circuit board (PCB) and the said backboard and is outside equipped with the heat conduction adhesive tape.
5. like each described direct-light-type backlight of claim 1-4, it is characterized in that said light source is the LED luminescence unit.
6. a display unit is characterized in that, comprises the described direct-light-type backlight of claim 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201153354U CN202469772U (en) | 2012-03-23 | 2012-03-23 | Direct-light-type backlight source and displaying device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201153354U CN202469772U (en) | 2012-03-23 | 2012-03-23 | Direct-light-type backlight source and displaying device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202469772U true CN202469772U (en) | 2012-10-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201153354U Expired - Lifetime CN202469772U (en) | 2012-03-23 | 2012-03-23 | Direct-light-type backlight source and displaying device |
Country Status (1)
| Country | Link |
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| CN (1) | CN202469772U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104279465A (en) * | 2014-10-28 | 2015-01-14 | 合肥京东方光电科技有限公司 | Backlight module and display device |
| CN104295973A (en) * | 2014-10-11 | 2015-01-21 | 京东方光科技有限公司 | Light bar manufacturing method |
| CN105892147A (en) * | 2016-05-24 | 2016-08-24 | 武汉华星光电技术有限公司 | Small-size direct-light display device and assembling method thereof |
| CN107390426A (en) * | 2017-06-20 | 2017-11-24 | 合肥市惠科精密模具有限公司 | A kind of TFT LCD display modules with noctilucence reflection backlight paper |
-
2012
- 2012-03-23 CN CN2012201153354U patent/CN202469772U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104295973A (en) * | 2014-10-11 | 2015-01-21 | 京东方光科技有限公司 | Light bar manufacturing method |
| CN104279465A (en) * | 2014-10-28 | 2015-01-14 | 合肥京东方光电科技有限公司 | Backlight module and display device |
| CN105892147A (en) * | 2016-05-24 | 2016-08-24 | 武汉华星光电技术有限公司 | Small-size direct-light display device and assembling method thereof |
| CN107390426A (en) * | 2017-06-20 | 2017-11-24 | 合肥市惠科精密模具有限公司 | A kind of TFT LCD display modules with noctilucence reflection backlight paper |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121003 |