CN206339809U - A kind of backlight module and liquid crystal display device - Google Patents
A kind of backlight module and liquid crystal display device Download PDFInfo
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- CN206339809U CN206339809U CN201621189821.5U CN201621189821U CN206339809U CN 206339809 U CN206339809 U CN 206339809U CN 201621189821 U CN201621189821 U CN 201621189821U CN 206339809 U CN206339809 U CN 206339809U
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- light
- backlight module
- guide plate
- light guide
- emission side
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Abstract
The utility model provides a kind of backlight module and liquid crystal display device, the backlight module includes light guide plate and light source, the light source is located at the side of the light guide plate, also including the reflecting layer for reflection light, and the reflecting layer is formed on the surface of the remote light emission side of the light guide plate.The light sent by the reflecting layer reflection source, so that the light is all sent from the light emission side of light guide plate, so as to set reflector plate without extra, and then reduces the thickness of backlight module itself, makes liquid crystal display device lightening.
Description
Technical field
The utility model is related to technical field of liquid crystal display, more particularly to a kind of backlight module and liquid crystal display device.
Background technology
With the development of liquid crystal display industry, more and more higher is required to the lightening of liquid crystal display device.Due to liquid crystal
Show that panel does not light, it is necessary to which the light source provided by backlight module carries out display image in itself, therefore, the thickness of backlight module is
The key factor for influenceing liquid crystal display device lightening.Backlight module is divided into side entrance back according to the different incoming positions of light source
Module and direct-insert backlight module, side entrance back module are that light source is arranged to the side of liquid crystal display panel, compared to general
Light source is arranged at the direct-insert backlight module behind liquid crystal display panel, it is possible to reduce the thickness of liquid crystal display device, therefore, gently
The liquid crystal display device that thinning requires higher uses side entrance back module mostly.
As shown in figure 1, side entrance back module includes：Light source (not illustrated in figure), diffusion sheet 5, upper prism 4, lower prism
3rd, light guide plate 2 and reflector plate 1, light source are located at the side of light guide plate 2, and light guide plate 2 is used to light source being converted to area source, reflected
Piece 1 is used to that light guide plate 2, upper prism 4 and lower prism will to be reflected back from the light of the outgoing of surface 21 of the remote light emission side of light guide plate
3 are used for convergence faces angular brightness from the light of the outgoing of surface 22 of the light emission side of light guide plate to improve, and diffusion sheet 5 is used for diverging light
Line is to improve display view angle.Therefore, this light guide plate adds the side entrance back module thickness of multilayer optical assembly thicker, is unfavorable for
Liquid crystal display device is lightening.
The content of the invention
The utility model is filled for above shortcomings in the prior art there is provided a kind of backlight module and liquid crystal display
Put, it is thicker at least partly to solve existing backlight module thickness, it is unfavorable for the problem of liquid crystal display device is lightening.
To achieve the above object, the utility model provides a kind of backlight module, including light guide plate and positioned at the light guide plate
The light source of side, also including the reflecting layer for reflection light, the reflecting layer forms the remote light emission side in the light guide plate
Surface on.
It is preferred that, the surface of the remote light emission side of the light guide plate is formed with multiple light guiding points for uniformly light-emitting.
It is preferred that, the light guiding points are concave point or salient point.
It is preferred that, the reflecting layer is formed on the surface of the light guiding points.
It is preferred that, the reflecting layer is also formed on the horizontal surface of remote light emission side of the light guide plate.
It is preferred that, from the neighbouring light source to the direction away from the light source, the diameter of each light guiding points is by small
To big.
It is preferred that, the diameter ranges of the light guiding points value between 10-50um.
It is preferred that, on from the neighbouring light source to the direction away from the light source, the distance between adjacent light guiding points by
Arrive greatly small.
It is preferred that, the surface of the light emission side of the light guide plate is formed with the striated structure for assembling light.
It is preferred that, the cross section of the striated structure is zigzag fashion or semi-circular shape.
A kind of liquid crystal display device, including backlight module as described above are also provided.
The utility model has the advantages that：
The utility model provides a kind of backlight module and liquid crystal display device, and the backlight module passes through in the remote of light guide plate
Surface from light emission side forms reflecting layer, the light sent to reflection source, so that whole the going out from light guide plate of the light
Light side is sent, and so as to set reflector plate without extra, and then is reduced the thickness of backlight module itself, is made liquid crystal display device
It is lightening.
Brief description of the drawings
The cross section structure schematic diagram for the backlight module that Fig. 1 provides for prior art；
The cross section structure schematic diagram one for the backlight module that Fig. 2 provides for the present embodiment；
The cross section structure schematic diagram two for the backlight module that Fig. 3 provides for the present embodiment；
Fig. 4 a are the light extraction distribution schematic diagram on the surface of the light emission side of the light guide plate of backlight module shown in Fig. 1；
Fig. 4 b are the light extraction distribution schematic diagram on the surface of the light emission side of the light guide plate of backlight module shown in Fig. 2.
Marginal data：
1st, reflector plate 2, light guide plate 3, lower prism 4, upper prism 5, diffusion sheet
6th, light guiding points 7, reflecting layer 8, light source 10, list structure
21st, the surface 22 of the remote light emission side of light guide plate, the surface of the light emission side of light guide plate
Embodiment
To make those skilled in the art more fully understand the technical solution of the utility model, below in conjunction with the accompanying drawings to this reality
It is described in detail with a kind of backlight module of new offer.
The utility model embodiment provides a kind of backlight module, as shown in Fig. 2 the backlight module includes：The He of light guide plate 2
Light source 8, light source 8 is located at the side of light guide plate 2.The backlight module also includes the reflecting layer 7 for reflection light, reflecting layer 7
Formed on the surface 21 of the remote light emission side of light guide plate.
The backlight module that the utility model is provided, by forming reflecting layer on the surface 21 of the remote light emission side of light guide plate
7, the light sent to reflection source 8 makes light all be sent from the surface 22 of the light emission side of light guide plate, so as to without
It is extra that reflector plate is set, and then reduce the thickness of backlight module itself, make liquid crystal display device lightening.
It should be noted that reflecting layer 7 can be by the formation of sputtering technology, evaporation process or typography in light guide plate
On surface 21 away from light emission side, to replace traditional reflector plate reflection light.For the light extraction of the light emission side that ensures light guide plate 2
Brightness, the material in reflecting layer 7 can select the aluminium that reflectivity is 85%, or, reflectivity is 90% silver.
As shown in Fig. 2 the surface 21 of the remote light emission side of light guide plate is formed with multiple light guiding points 6 for uniformly light-emitting.
Light guiding points 6 can be formed by method physically or chemically, and when light is transmitted in light guide plate 2, light is irradiated to light guiding points 6
On, light guiding points 6 scatter light so that change light be irradiated to light guide plate light emission side surface 22 incident angle,
Avoid light from producing total reflection effect, light is sent from the surface 22 of the light emission side of light guide plate.
The diameter range of light guiding points 6 value between 10-50um, is certainly not limited to this, and those skilled in the art can root
Debugged according to actual conditions.
Light guiding points 6 can be concave point or salient point, it is preferred that light guiding points 6 are concave point.In the present embodiment, it is with light guiding points 6
Illustrated exemplified by concave point.
It is preferred that, reflecting layer 7 is formed on the surface in light guiding points 6, in the embodiment shown in Figure 2, and reflecting layer 7 is only formed
On the curved surfaces of light guiding points 6.When light is irradiated to the horizontal surface (table of i.e. non-light guiding points of the remote light emission side of light guide plate
Face) on when, in the presence of total reflection effect, light continue to away from light source 8 direction transmit；When light is irradiated to light guiding points
When on 6 curved surfaces, reflecting layer 7 can increase the reflectivity for the light being irradiated on the curved surfaces of light guiding points 6, after reflection
Light sent from the surface 22 of the light emission side of light guide plate.So that the light of the light sent from the surface 22 of the light emission side of light guide plate
It is strong stronger, so as to improve the emitting brightness of light guide plate 2.
Further, reflecting layer 7 is additionally formed on the horizontal surface of remote light emission side of light guide plate, that is to say, that
Reflecting layer 7 is formed in the whole surface (i.e. including curved surfaces and horizontal surface) of the remote light emission side of light guide plate.But,
Skilled person will appreciate that, it is optimal case to form reflecting layer 7 only on the surface of light guiding points 6, this way it is possible to avoid part
Light is absorbed by the horizontal surface of the remote light emission side of light guide plate, so as to increase the light intensity for the light being totally reflected, it is ensured that lead
Emitting brightness on tabula rasa 2 at the position away from light source 8.
It is preferred that, on neighbouring light source 8 to the direction away from light source 8, the diameter of each light guiding points 6 is ascending.Neighbouring
Light source 8 to away from light source 8 direction on, the distance between adjacent light guiding points 6 are descending.When light is in the neighbouring position of light source 8
Light guide plate 2 in transmit when, light intensity is stronger, and the diameter of light guiding points 6 is smaller, and the distance between adjacent light guiding points 6 are larger, this
Sample, it is possible to reduce light guide plate 2 and enables light by being traveled to close to the side of light source 8 away from light in the amount of light of the position
The side in source 8；When light is transmitted in the light guide plate 2 away from light source 8 position, light intensity is weaker, and light guiding points 6 are relatively large in diameter,
The distance between adjacent light guiding points 6 are smaller, so, can increase amount of light of the light guide plate 2 in the position, so as to improve leaded light
The emitting brightness uniformity of plate 2.
As shown in figure 3, further, the surface 22 of the light emission side of light guide plate is also formed with the striped knot for assembling light
Structure 10, with the emitting brightness for the light emission side for increasing light guide plate 2.It is preferred that, the cross section of striated structure 10 is zigzag fashion or half
Toroidal.
Set anti-on striated structure 10, the curved surfaces through light guiding points 6 by the surface 22 of the light emission side in light guide plate
Penetrate the light after layer 7 reflects to be irradiated on list structure 10, list structure 10 reflects light to the center of light guide plate 2, can be with
Convergence is played a part of to light, further the emitting brightness of lifting light guide plate 2.
Using SPEOS optical simulation softwares by the backlight module shown in the backlight module and Fig. 2 shown in Fig. 1 as a comparison
Group, carries out the light extraction simulated test on the surface of the light emission side of light guide plate.Fig. 4 b are going out for the light guide plate of the backlight module shown in Fig. 2
The distribution schematic diagram of luminous point on the surface of light side, Fig. 4 a are on the surface of the light emission side of the light guide plate of the backlight module shown in Fig. 1
The distribution schematic diagram of luminous point, with reference to shown in Fig. 4 a and Fig. 4 b, the backlight module shown in backlight module and Fig. 1 shown in Fig. 2 is being led
The light distribution that goes out on tabula rasa y-axis direction is similar, i.e., the backlight module visual angle level shown in the backlight module and Fig. 1 shown in Fig. 2
Quite.
The density of luminous point is more than the backlight shown in Fig. 1 on the surface of the light emission side of the light guide plate of backlight module shown in Fig. 2
The density of luminous point on the surface of the light emission side of the light guide plate of module, i.e., the positive visual angle mean flow rate of the backlight module shown in Fig. 2 is big
In the positive visual angle mean flow rate of the backlight module shown in Fig. 1.
The analog reslt of positive visual angle mean flow rate is as shown in table 1：
Table 1
| Scheme | Backlight module shown in Fig. 1 | Backlight module shown in Fig. 2 |
| Positive visual angle mean flow rate | 1232nit | 1485nit |
It can be seen from Table 1 that, the positive visual angle mean flow rate of the backlight module shown in Fig. 1 is 1232nit, shown in Fig. 2
The positive visual angle mean flow rate of backlight module is 1485nit, that is to say, that backlight module of the present utility model is compared to the existing back of the body
Optical mode group, positive visual angle mean flow rate improves a lot.
The positive visual angle that the positive visual angle mean flow rate of backlight module shown in Fig. 2 is more than the backlight module shown in Fig. 1 is average bright
Degree, and then on the premise of emitting brightness and visual angle is ensured, the light such as upper prism, lower prism and diffusion barrier can be set without extra
Component is learned, makes liquid crystal display device further lightening, furthermore, it is also possible to solve because setting upper prism, lower prism and diffusion barrier
Fold, Newton's ring, moire fringes and the hickie brought is bad, so as to lift the yield of liquid crystal display device.
The utility model also provides a kind of display device, including above-mentioned backlight module.Display device can be liquid crystal display
Any product or part with display function such as panel, Electronic Paper, mobile phone, panel computer, television set, DPF.
It is understood that the principle that embodiment of above is intended to be merely illustrative of the present and the exemplary implementation that uses
Mode, but the invention is not limited in this.For those skilled in the art, the essence of the present invention is not being departed from
In the case of refreshing and essence, various changes and modifications can be made therein, and these variations and modifications are also considered as protection scope of the present invention.
Claims (9)
1. a kind of backlight module, including light guide plate and the light source positioned at the light guide plate side, it is characterised in that also including for
The reflecting layer of reflection light, the reflecting layer is formed on the surface of the remote light emission side of light guide plate；
The surface of the remote light emission side of the light guide plate is formed with multiple light guiding points for uniformly light-emitting.
2. backlight module according to claim 1, it is characterised in that the light guiding points are concave point or salient point.
3. backlight module according to claim 2, it is characterised in that the reflecting layer is formed on the surface of the light guiding points
On.
4. backlight module according to claim 3, it is characterised in that the reflecting layer is also formed in the remote of the light guide plate
From on the horizontal surface of light emission side.
5. backlight module according to claim 1, it is characterised in that from the neighbouring light source to the remote light source
On direction, the diameter of each light guiding points is ascending.
6. backlight module according to claim 2, it is characterised in that from the neighbouring light source to the remote light source
On direction, the distance between adjacent light guiding points are descending.
7. the backlight module according to claim 1-6 any one, it is characterised in that the table of the light emission side of the light guide plate
Face is formed with the striated structure for assembling light.
8. backlight module according to claim 7, it is characterised in that the cross section of the striated structure be zigzag fashion or
Semi-circular shape.
9. a kind of liquid crystal display device, including the backlight module as described in claim 1-8 any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621189821.5U CN206339809U (en) | 2016-11-04 | 2016-11-04 | A kind of backlight module and liquid crystal display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621189821.5U CN206339809U (en) | 2016-11-04 | 2016-11-04 | A kind of backlight module and liquid crystal display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206339809U true CN206339809U (en) | 2017-07-18 |
Family
ID=59299878
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621189821.5U Active CN206339809U (en) | 2016-11-04 | 2016-11-04 | A kind of backlight module and liquid crystal display device |
Country Status (1)
| Country | Link |
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| CN (1) | CN206339809U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107807477A (en) * | 2017-11-28 | 2018-03-16 | 合肥泰沃达智能装备有限公司 | A kind of backlight module with wedge-shaped light-strip |
| CN108873476A (en) * | 2018-07-11 | 2018-11-23 | 深圳市华星光电半导体显示技术有限公司 | Backlight module and preparation method thereof and transparent liquid crystal display device |
| CN109869665A (en) * | 2019-04-24 | 2019-06-11 | 上海奉天电子股份有限公司 | A kind of uniform backlight ring of light of novel USB interface |
| CN112417933A (en) * | 2019-08-23 | 2021-02-26 | 华为技术有限公司 | Backlight module and electronic equipment |
| CN114185192A (en) * | 2021-12-09 | 2022-03-15 | 武汉华星光电技术有限公司 | Light-emitting panel and display device |
| WO2023226542A1 (en) * | 2022-05-24 | 2023-11-30 | 惠州视维新技术有限公司 | Backlight module, light guide plate, and display device |
-
2016
- 2016-11-04 CN CN201621189821.5U patent/CN206339809U/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107807477A (en) * | 2017-11-28 | 2018-03-16 | 合肥泰沃达智能装备有限公司 | A kind of backlight module with wedge-shaped light-strip |
| CN107807477B (en) * | 2017-11-28 | 2024-03-22 | 合肥泰沃达智能装备有限公司 | Backlight module with wedge-shaped light guide strip |
| CN108873476A (en) * | 2018-07-11 | 2018-11-23 | 深圳市华星光电半导体显示技术有限公司 | Backlight module and preparation method thereof and transparent liquid crystal display device |
| CN109869665A (en) * | 2019-04-24 | 2019-06-11 | 上海奉天电子股份有限公司 | A kind of uniform backlight ring of light of novel USB interface |
| CN112417933A (en) * | 2019-08-23 | 2021-02-26 | 华为技术有限公司 | Backlight module and electronic equipment |
| WO2021036586A1 (en) * | 2019-08-23 | 2021-03-04 | 华为技术有限公司 | Backlight module and electronic device |
| CN114185192A (en) * | 2021-12-09 | 2022-03-15 | 武汉华星光电技术有限公司 | Light-emitting panel and display device |
| WO2023226542A1 (en) * | 2022-05-24 | 2023-11-30 | 惠州视维新技术有限公司 | Backlight module, light guide plate, and display device |
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