CN206248879U - A kind of backlight module and display device - Google Patents
A kind of backlight module and display device Download PDFInfo
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- CN206248879U CN206248879U CN201621414271.2U CN201621414271U CN206248879U CN 206248879 U CN206248879 U CN 206248879U CN 201621414271 U CN201621414271 U CN 201621414271U CN 206248879 U CN206248879 U CN 206248879U
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- guide plate
- index layer
- backlight module
- light guide
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Abstract
The utility model discloses a kind of backlight module and display device, backlight module includes light source and optical diaphragm group, optical diaphragm group from top to bottom includes blooming piece, light guide plate, low-index layer and reflector plate, low-index layer is the coating or coating of light guide plate, on the dot surface of light guide plate, fitted between low-index layer and reflector plate, the refractive index of low-index layerWith the refractive index of light guide plateRelation be.The invention also discloses the display device of the above-mentioned backlight module of application.The utility model is applied to the design of ultra-thin display device, the intensity of module is increased using laminating type, it is ensured that low drain light rate, improves the total quality of backlight module.
Description
Technical field
The utility model is related to technical field of liquid crystal display, specially a kind of backlight module and display device.
Background technology
At present, TFT-LCD technologies are used the liquid crystal module of flat-panel screens application more.TFT-LCD is luminous for inactive mode
It has been shown that, generally by white light backlight module（Backlight Module）Uniform system brightness is provided, then through colored filter
（Color Filter）Obtain abundant color displays.Existing white light side entrance back module includes light source and blooming piece
Group.Light emitting diode（LED）One of because small volume, power consumption are few, therefore the light source used as LCD backlight module；
The spot light of LED is changed into by area source by the net-pont design of light guide plate.
The module of prior art its reflector plate, light guide plate are assembled by the way of stacking, this kind of reflecting light conductive plate
There is air layer between reflector plate.During ultrathin design, in order to increase intensity, module intensity is increased using laminating type.But mesh
Preceding existing coating technique produces light leakage phenomena serious.
The content of the invention
The purpose of this utility model is to provide a kind of backlight module and display device, to improve module intensity, reduces leakage
Optical phenomenon.To achieve the above object, the utility model uses following technical scheme：
A kind of backlight module, including light source and optical diaphragm group, it is characterised in that：Described optical diaphragm group is from top to bottom
Including blooming piece, light guide plate, low-index layer and reflector plate, described low-index layer is the coating or coating of light guide plate,
On the dot surface of light guide plate, fitted between described low-index layer and reflector plate, the folding of described low-index layer
Penetrate rateWith the refractive index of light guide plateRelation be 。
Preferably, the refractive index of described low-index layerWith the refractive index of light guide plateRelation be 。
Wherein, the material of described light guide plate is PMMA or MS or glass.Described low-index layer is optical lens finish
Matter, its light transmittance >=90 ﹪.
In one embodiment, the mode fitted between described low-index layer and reflector plate is that low-index layer is band
There is the coating of stickiness, apply shoe and be bonded on the dot surface of light guide plate, reflector plate is bonded with coating and fitted.
The thickness of above-mentioned coatingWith the thickness of light guide plate mesh pointRelation be＞。
In another embodiment, the mode fitted between described low-index layer and reflector plate is middle two-sided by one
Glue-line is fitted, and described low-index layer is the coating of light guide plate.
The thickness of above-mentioned coatingWith the thickness of light guide plate mesh pointRelation be≤, layers of two-sided
Thickness is。
Wherein, described layers of two-sided is optical material, its visible light transmittance rate >=90 ﹪.
The invention also discloses a kind of display device, including backlight module and display panel, it is characterised in that：It is described
Backlight module be the backlight module described in any one of claim 1~9.
As a result of above-mentioned structure, the utility model has the advantages that：The utility model is applied to ultra-thin
The design of display device, the intensity of module, the refractive index of low-index layer are increased using laminating typeWith light guide plate
Refractive indexRelation, it is ensured that low drain light rate, improve the total quality of backlight module.
Brief description of the drawings
Fig. 1 is the structural representation of the utility model embodiment one.
Fig. 2 is the structural representation of the utility model embodiment two.
Fig. 3 is close-up schematic view at the A of Fig. 2.
Fig. 4 is the light leak schematic diagram when refractive index that optical simulation software simulates low-index layer is 1.
Fig. 5 is the light leak schematic diagram when refractive index that optical simulation software simulates low-index layer is 1.1.
Fig. 6 is the light leak schematic diagram when refractive index that optical simulation software simulates low-index layer is 1.2.
Fig. 7 is the light leak schematic diagram when refractive index that optical simulation software simulates low-index layer is 1.24.
Fig. 8 is the light leak schematic diagram when refractive index that optical simulation software simulates low-index layer is 1.3.
Fig. 9 is the light leak schematic diagram when refractive index that optical simulation software simulates low-index layer is 1.4.
Primary clustering symbol description：
1：Light source, 2：Blooming piece, 3：Light guide plate, 31：Site, 4：Low-index layer, 5：Reflector plate, 6：Layers of two-sided.
Specific embodiment
In order that those skilled in the art more fully understands the technical solution of the utility model, below in conjunction with the accompanying drawings and tool
Body embodiment is described in further detail to the utility model.
Embodiment one
As shown in figure 1, the utility model discloses a kind of backlight module, including light source 1 and optical diaphragm group, blooming piece
Group from top to bottom includes blooming piece 2, light guide plate 3, low-index layer 4 and reflector plate 5.Low-index layer 4 is the painting of light guide plate 3
Layer, the coating is the coating with stickiness, applies shoe and is bonded on the dot surface of light guide plate 3, makes low-index layer 4 and reflector plate 5
Between fit.
The material of light guide plate 3 is PMMA (polymethyl methacrylate), MS (styrene-methyl methacrylate
), backlight intensity during for enhancing ultrathin design, the material of light guide plate 3 is glass.Low-index layer 4 is optics light-transmitting materials, and its is saturating
Light rate >=90 ﹪.
The refractive index of low-index layer 4With the refractive index of light guide plate 3Relation be 。
Low-index layer 4 is the thickness of the coating of light guide plate 3With the thickness of light guide plate mesh point 31Relation be＞。
Embodiment two
As shown in Figure 2 and Figure 3, the utility model discloses a kind of backlight module, including light source 1 and optical diaphragm group, optics
Diaphragm group from top to bottom includes blooming piece 2, light guide plate 3, low-index layer 4, layers of two-sided 6, reflector plate 5.Low-index layer 4
It is the coating of light guide plate 3, layers of two-sided 6 bonds low-index layer 4 and reflector plate 5, makes between low-index layer 4 and reflector plate 5
Fit.
The material of light guide plate 3 is PMMA (polymethyl methacrylate), MS (styrene-methyl methacrylate
), backlight intensity during for enhancing ultrathin design, the material of light guide plate 3 is glass.Low-index layer 4 is optics light-transmitting materials, and its is saturating
Light rate >=90 ﹪.Layers of two-sided 6 is optical material, its visible light transmittance rate >=90 ﹪.
Low-index layer 4 is the thickness of the coating of light guide plate 3With the thickness of light guide plate mesh point 31Relation be≤, the thickness of layers of two-sided 6 is.Make effectively bonding light guide plate 3 and the reflector plate of layers of two-sided 6
5。
The principle of both examples above is：When the light of LED enters light guide plate 3, most of light is incident to light guide plate 3
During with 4 interface of low-index layer, it is totally reflected, is reflected back light guide plate 3.When light is incident to the site 31 on light guide plate 3,
Light is reflected by site 31, appearance face light extraction of the light from light guide plate 3.Thus, adjusted by the site 31 on light guide plate, can be with
The backlight that light is evenly distributed is obtained, without the phenomenon of light leak.In this coating technique, light guide plate low-index layer 4
Refractive index have to be lower than the refractive index of light guide plate 3, when the refractive index of low-index layer 4 is higher than certain numerical value, incident side meeting
Produce light leakage phenomena.The light leak data produced using optical simulation software simulation, as shown in Fig. 4~9, the leaded light of analog use
The refractive index of plate 3 is 1.24.Light leak ratio data during 4 different refractivity of low-index layer is as shown in table 1.
Light leak ratio during 1 low-index layer different refractivity of table
| The refractive index of low-index layer | Light leak ratio |
| 1 | 0 |
| 1.1 | 0 |
| 1.2 | 0.31% |
| 1.24 | 1.20% |
| 1.3 | 4.36% |
| 1.4 | 17.34% |
Research shows：When the refractive index of low-index layer 4 is less than or equal to 1.1, total reflection is met, do not have light leak, less than etc.
There is light bias when 1.24, light leak is more serious during more than or equal to 1.24.When refractive index is more than 1.24, the more difficult adjustment in site 31
To the state of uniform in light emission.So when the refractive index of light guide plate 3 is 1.49, the refractive index of low-index layer 4 need to be less than or equal to
1.24。
Assuming that the refractive index of low-index layer 4 is, the refractive index of light guide plate 3 is, it is all if necessary to ensure
Light total reflection needs to meet, i.e.,。
Through experiment, more low-refraction, its technique is more difficult to, and the productibility and even back for considering coating or coating can
Tonality, then meet, both。
When i.e. light guide plate 3 is from unlike material, the alternation rule of the material of available low-index layer 4 is as follows：
Light guide plate 3 is PMMA (polymethyl methacrylate), and refractive index is 1.49, then the refractive index of low-index layer 4
≤ 0.83 × 1.49, i.e., must select the coating or coating material less than or equal to 1.2367.
Light guide plate 3 is MS (styrene-methyl methacrylate), and refractive index is 1.56, then the folding of low-index layer 4
Rate≤0.83 × 1.56 are penetrated, i.e., must select the coating or coating material less than or equal to 1.2948.
Light guide plate 3 is glass, and refractive index is 1.6, then refractive index≤0.83 × 1.6 of low-index layer 4, i.e., must select small
In or equal to 1.328 coating or coating material.
The above, only the utility model preferably specific embodiment, but protection domain of the present utility model is not
This is confined to, any one skilled in the art can readily occur in the technical scope that the utility model is disclosed
Change or replacement, should all cover within protection domain of the present utility model.
Claims (10)
1. a kind of backlight module, including light source and optical diaphragm group, it is characterised in that：Described optical diaphragm group is from top to bottom wrapped
Blooming piece, light guide plate, low-index layer and reflector plate are included, described low-index layer is the coating or coating of light guide plate, position
In on the dot surface of light guide plate, fitted between described low-index layer and reflector plate, the refraction of described low-index layer
RateWith the refractive index of light guide plateRelation be 。
2. backlight module as claimed in claim 1, it is characterised in that：The refractive index of described low-index layerWith leaded light
The refractive index of plateRelation be 。
3. backlight module as claimed in claim 1, it is characterised in that：The material of described light guide plate is PMMA or MS or glass
Glass.
4. backlight module as claimed in claim 1, it is characterised in that：Described low-index layer is optics light-transmitting materials, its
Light transmittance >=90 ﹪.
5. backlight module as claimed in claim 1, it is characterised in that：Fitted between described low-index layer and reflector plate
Mode be that low-index layer is the coating with stickiness, apply to carry out and be bonded on the dot surface of light guide plate, reflector plate and coating glue
Knot laminating.
6. backlight module as claimed in claim 5, it is characterised in that：The thickness of coatingWith the thickness of light guide plate mesh pointRelation be＞。
7. backlight module as claimed in claim 1, it is characterised in that：Fitted between described low-index layer and reflector plate
Mode fitted by a layers of two-sided for middle, described low-index layer is the coating of light guide plate.
8. backlight module as claimed in claim 7, it is characterised in that：The thickness of coatingWith the thickness of light guide plate mesh pointRelation be≤, the thickness of layers of two-sided is。
9. backlight module as claimed in claim 7 or 8, it is characterised in that：Described layers of two-sided is optical material, and its is visible
Light light transmittance >=90 ﹪.
10. a kind of display device, including backlight module and display panel, it is characterised in that：Described backlight module will for right
Seek the backlight module described in 1~9 any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621414271.2U CN206248879U (en) | 2016-12-22 | 2016-12-22 | A kind of backlight module and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621414271.2U CN206248879U (en) | 2016-12-22 | 2016-12-22 | A kind of backlight module and display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206248879U true CN206248879U (en) | 2017-06-13 |
Family
ID=59008820
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621414271.2U Active CN206248879U (en) | 2016-12-22 | 2016-12-22 | A kind of backlight module and display device |
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| Country | Link |
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| CN (1) | CN206248879U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106772759A (en) * | 2016-12-22 | 2017-05-31 | 鸿汉（厦门）科技有限公司 | A kind of backlight module and display device |
| CN108398829A (en) * | 2018-02-27 | 2018-08-14 | 惠州市华星光电技术有限公司 | Backlight module and preparation method thereof based on quantum dot |
-
2016
- 2016-12-22 CN CN201621414271.2U patent/CN206248879U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106772759A (en) * | 2016-12-22 | 2017-05-31 | 鸿汉（厦门）科技有限公司 | A kind of backlight module and display device |
| CN106772759B (en) * | 2016-12-22 | 2023-09-01 | 鸿汉（厦门）科技有限公司 | Backlight module and display device |
| CN108398829A (en) * | 2018-02-27 | 2018-08-14 | 惠州市华星光电技术有限公司 | Backlight module and preparation method thereof based on quantum dot |
| CN108398829B (en) * | 2018-02-27 | 2021-03-02 | 惠州市华星光电技术有限公司 | Backlight module based on quantum dots and manufacturing method thereof |
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