CN206450929U - A kind of backlight module and display device - Google Patents
A kind of backlight module and display device Download PDFInfo
- Publication number
- CN206450929U CN206450929U CN201720101719.3U CN201720101719U CN206450929U CN 206450929 U CN206450929 U CN 206450929U CN 201720101719 U CN201720101719 U CN 201720101719U CN 206450929 U CN206450929 U CN 206450929U
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- diffusion sheet
- cut away
- backlight module
- glue
- away section
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Abstract
The utility model discloses a kind of backlight module, including：Backlight, light guide plate and diffusion sheet；The light guide plate includes incident side, the backlight is set relative to the incident side of the light guide plate, the diffusion sheet is covered on the light guide plate, and the diffusion sheet has the first side for the incident side for closing on the light guide plate, wherein, it is provided with the diffusion sheet at the first side and the region of first glue-line is closed on the first glue-line, and the diffusion sheet is provided with least one cut away section.Present invention also provides a kind of display device.The utility model solves the problem of diffusion sheet produces fold.
Description
Technical field
The utility model is related to display technology field, more particularly, to a kind of backlight module and display device.
Background technology
With the increasingly renewal of display science and technology, liquid crystal display is with it：Low in energy consumption, small volume, lightweight, ultra-thin etc. show
Write advantage and quickly instead of traditional monitor.Liquid crystal display is passive light-emitting component, and display screen does not light in itself, but by it
What the back light system of lower section illuminated.Backlight module is one of key part and component of panel of LCD, and function is that supply is filled
The brightness of foot and the light source being evenly distributed, can normally show image.
The backlight module main frame of current liquid crystal display is as shown in figure 1, Fig. 1 is the knot of backlight module in the prior art
Structure schematic diagram.Backlight module of the prior art includes：Backlight 101, light guide plate (Light Guide Plate, abbreviation：
LGP) 102 and diffusion sheet 103；Diffusion sheet 103 is posted in the upper surface of light guide plate 102, the upper surface of diffusion sheet 103 is to add lustre to
Plate (Brightness Enhancement Film, referred to as：BEF), add lustre plate is divided into lower add light plate 107 and upper add light plate 106.
Add lustre plate has one section of gap with the front end of light guide plate 102 close to the side of backlight 101, for laying black glue 104, is leaned in backing structure
The diffusion sheet edge of nearly LED sides posts one section of black one side glue, is conducive to improving the optical effect of LED sides.Shadow shield 105 is covered
The whole surface of backlight 101, the light that backlight 101 is sent is reflexed to diffusion sheet 103 by reflection diaphragm 108, so that backlight knot
Light in structure is uniformly distributed.
In the backlight module of prior art, the certain thickness black glue of selection is generally required, to reach preferably masking light
The effect of line, and diffusion sheet below black glue, than relatively thin, diffusion sheet and black glue are as made from different materials, by high temperature or height
Convergent-divergent has differences in the case of wet condition influence.It can also produce higher temperature in the backlight module course of work, therefore
Easily there is the situation of stress concentration in the position, and then causes the harmomegathus of diffusion sheet to be affected, so as to produce fold, has influence on the back of the body
The action effect of optical mode group.
Therefore it provides a kind of stress for discharging diffusion sheet and black glue correspondence position, to avoid diffusion sheet from producing the back of the body of fold
Optical mode group is this area urgent problem to be solved.
Utility model content
In view of this, the utility model provides a kind of backlight module and display device, solves in backlight module and spreads
Piece produces the technical problem of fold.
In order to solve the above-mentioned technical problem, the utility model proposes a kind of backlight module, including：
Backlight, light guide plate and diffusion sheet；
The light guide plate includes incident side, and the backlight is set relative to the incident side of the light guide plate, the diffusion
Piece is covered on the light guide plate, and the diffusion sheet has the first side for the incident side for closing on the light guide plate, wherein,
It is provided with the diffusion sheet on the first glue-line, and the diffusion sheet at the first side and closes on described the
The region of one glue-line is provided with least one cut away section.
Alternatively, wherein, first glue-line be black glue.
Alternatively, wherein, the first side of the cut away section parallel to the diffusion sheet.
Alternatively, wherein, the cut away section be cutting line.
Alternatively, wherein, the cut away section includes the multiple engraved structures for repeating to set, and the engraved structure is shaped as
Circular, ellipse, polygon or irregular shape.
Alternatively, wherein, the distance between the cut away section and described first glue-line scope are more than or equal to 0 and are less than
Or equal to 10mm.
Alternatively, wherein, the width on direction of the cut away section along the first side perpendicular to the diffusion sheet is small
In or equal to 2mm.
Alternatively, wherein, the diffusion sheet also include second side and the 3rd side, the second side and the described 3rd
Side is adjacent with the first side, second side described in the threshold value of the cut away section or the 3rd side away from
From more than or equal to 5mm.
Alternatively, wherein, the region that first glue-line is closed on the diffusion sheet is provided with least two cut away section, institute
State and be parallel to each other between at least two cut away section.
The utility model also provides a kind of display device, and above-mentioned backlight module is provided with the display device.
Compared with prior art, backlight module of the present utility model and display device, realize following beneficial effect：
(1) backlight module described in the utility model and display device, diffusion sheet is cut with being introduced in black glue in backlight module
The design in disconnected portion, improving diffusion sheet and black glue, stress concentration shows caused by the difference of convergent-divergent under the conditions of hot and humid
As solving the problem of diffusion sheet produces fold.
(2) backlight module described in the utility model and display device, cutting portion is set on diffusion sheet and black glue, is being made
It is the plastic cutting portion while diffusion sheet and black glue, simple to operate, saving cost and easily realization customization.Can be according to specific
Use condition adjusts the structure, quantity and position of cutting portion, can reach preferably stress release effect, so that more effectively
The problem of preventing diffusion sheet fold, it is ensured that the good display effect of backlight module.
Certainly, implement any product of the present utility model must not specific needs reach all the above technology effect simultaneously
Really.
It is of the present utility model other by referring to the drawings to the detailed description of exemplary embodiment of the present utility model
Feature and its advantage will be made apparent from.
Brief description of the drawings
The accompanying drawing for being combined in the description and constituting a part for specification shows embodiment of the present utility model, and
And be used to explain principle of the present utility model together with its explanation.
Fig. 1 is the structural representation of backlight module in the prior art；
Fig. 2 is the structural representation of backlight module described in the utility model embodiment；
Fig. 3 be the utility model embodiment on the diffusion sheet of backlight module set cut away section structural representation；
Fig. 4 is that set cut away section is the structure of cutting line on the diffusion sheet of backlight module in the utility model embodiment
Schematic diagram；
Fig. 5 A are that to set the engraved structure of cut away section in the utility model embodiment on the diffusion sheet of backlight module be round
The structural representation of shape；
Fig. 5 B are that to set the engraved structure of cut away section in the utility model embodiment on the diffusion sheet of backlight module be ellipse
Circular structural representation；
Fig. 5 C are that to set the engraved structure of cut away section in the utility model embodiment on the diffusion sheet of backlight module be many
The structural representation of side shape；
Fig. 6 is displaying cut away section and the schematic diagram of the distance between the first glue-line in the utility model embodiment；
Fig. 7 be in the utility model embodiment displaying cut away section along wide on the direction perpendicular to the first side of diffusion sheet
The schematic diagram of degree.
Embodiment
Various exemplary embodiments of the present utility model are described in detail now with reference to accompanying drawing.It should be noted that：Unless another
Illustrate outside, the part and the positioned opposite of step, numerical expression and numerical value otherwise illustrated in these embodiments is not limited
Make scope of the present utility model.
The description only actually at least one exemplary embodiment is illustrative below, never as to this practicality
New and its application or any limitation used.
It may be not discussed in detail for technology, method and apparatus known to person of ordinary skill in the relevant, but suitable
In the case of, the technology, method and apparatus should be considered as a part for specification.
In shown here and discussion all examples, any occurrence should be construed as merely exemplary, without
It is as limitation.Therefore, other examples of exemplary embodiment can have different values.
It should be noted that：Similar label and letter represents similar terms in following accompanying drawing, therefore, once a certain Xiang Yi
It is defined, then it need not be further discussed in subsequent accompanying drawing in individual accompanying drawing.
As shown in Figures 2 and 3, Fig. 2 is the structural representation of backlight module described in the present embodiment；Fig. 3 is in backlight module
Diffusion sheet on set cut away section structural representation.The backlight module includes：Backlight 201, light guide plate 202 and diffusion sheet
203。
Wherein, light guide plate 202 includes incident side 221, and backlight 201 is set relative to the incident side 221 of light guide plate 202,
Diffusion sheet 203 is covered on light guide plate 202, and diffusion sheet 203 has the first side for the incident side 221 for closing on light guide plate 202
231。
Light guide plate 202 can be acrylic/PC plate material using optical grade.
The first glue-line 204 is provided with first side 231 on diffusion sheet 203, and the first glue is closed on diffusion sheet 203
The region of layer 204 is provided with least one cut away section 205.
Compared with backlight module of the prior art, backlight module described in the present embodiment closes on the first glue-line on diffusion sheet
Region be provided with cut away section, diffusion sheet and the stress of black glue can be discharged so that fold will not occur for diffusion sheet.
In some optional embodiments, the first glue-line 204 is black glue.In above-mentioned backing structure, more can by
Paste one section of one side glue, the optical effect for improving backlight side in the diffusion sheet edge of the nearly side of backlight 201；And black glue relative to
Other colors being capable of preferably shield lights.Backlight 201 can be LED or other luminescent devices.
Add lustre plate is divided into lower add light plate 207 and upper add light plate 206.Add lustre plate is with the front end of light guide plate 202 close to backlight 201
There is one section of gap side, for laying black glue 204, and the diffusion sheet edge close to LED sides in backing structure posts one section of black list
Face glue, is conducive to improving the optical effect of LED sides.Shadow shield 208 covers the whole surface of backlight 201, and reflection diaphragm 209 will be carried on the back
The light that light source 201 is sent reflexes to diffusion sheet 203, so that the light in backing structure is uniformly distributed.
Preferably, in above-mentioned backlight module, the first glue-line 204 generally requires the slightly thick adhesive tape of selection, so
More preferable screening effect is can guarantee that, and diffusion sheet just adapts to light, thin and narrow frame the requirement of present backlight module than relatively thin,
Secret note is thicker, in such a configuration, and the situation of stress concentration, and two kinds of materials easily occurs in the corresponding position of diffusion secret note
Characteristic can inherently have some differences, so under the influence of high temperature or super-humid conditions, the harmomegathus of diffusion sheet be easy for by
To influence, so as to produce fold.The setting of cut away section just effectively improves this situation in the present embodiment.
In some optional embodiments, first side 231 of the cut away section 205 parallel to diffusion sheet 203.First glue-line
204 paste close to the diffusion sheet edge of the side of backlight 201, and the expansion-contraction degree of the first glue-line and diffusion sheet has differences, along first
Easily there is stress concentration in the diffusion sheet of the neighboring area of glue-line 204, and the first glue-line is pasted along diffusion sheet edge, parallel to diffusion
The first side 231 of piece 203 sets cut away section, that is, is set parallel to the bearing of trend of the first glue-line, is conducive to release to hang down
Directly in the stress (i.e. longitudinal stress) on the direction of first side 231.
In some optional embodiments, cut away section 205 is cutting line, as shown in Figure 4.In the present embodiment to cutting
The shape in portion is not limited, either the structure of cutting line or other middle hollow outs, as long as release the first glue-line week can be reached
The structure of side diffusion sheet upper stress all should be in the range of the present embodiment.And cut away section be cutting line when, making work can be simplified
Skill, is also convenient for setting the width of cutting line according to actual needs, and diffusion sheet is not being interfered with just while meeting release stress
Chang Gongneng.
In some optional embodiments, cut away section 205 includes the multiple engraved structures 251 for repeating to set, the hollow out
The shape of structure can be circular, ellipse, polygon or irregular shape, and as shown in Fig. 5 A, Fig. 5 B and Fig. 5 C, Fig. 5 A are
It is circular structural representation that the engraved structure 251 of cut away section is set on the diffusion sheet of backlight module；Fig. 5 B are in backlight mould
It is the structural representation of ellipse that the engraved structure 251 of cut away section is set on the diffusion sheet of group；Fig. 5 C are the expansion in backlight module
The engraved structure 251 that cut away section is set in discrete piece is polygonal structural representation.The present embodiment is to hollow out knot in cut away section 205
The distance between structure is not limited, and the distance between engraved structure both can be identical so that engraved structure is along cut away section 205
Bearing of trend on be uniformly distributed；The distance between engraved structure can also both be differed so that engraved structure is along cut away section
Uneven distribution on 205 bearing of trend；The distance between engraved structure distribution gradient can also be set, released as long as can reach
The engraved structure for putting the cut away section of the first glue-line periphery diffusion sheet upper stress sets form all should be in the range of the present embodiment.Circle
Shape, oval or polygonal engraved structure are conducive to release from the stress in all directions of periphery, further improve release
The effect of first glue-line periphery diffusion sheet upper stress.
In some optional embodiments, the distance between glue-line 204 of cut away section 205 and first H scopes to be more than or
Equal to 0 and less than or equal to 10mm.As shown in fig. 6, being the signal of the distance between cut away section in the present embodiment and the first glue-line
Figure.
The distance between the glue-line 204 of cut away section 205 and first is smaller to be more conducive to discharging stress, distance therebetween
More than certain limit, the release of stress is just influenced whether, is also just unfavorable for producing diffusion sheet 203 improvement of fold.This implementation
The distance between cut away section 205 and the first glue-line 204 H is not limited in example, any can reach discharges the first glue-line periphery
Diffusion sheet upper stress all should be in the range of the present embodiment apart from H.The distance between cut away section and the first glue-line H is set to be more than
Or equal to 0 and less than or equal to 10mm, ensure that the first glue-line periphery diffusion sheet upper stress of release, it is to avoid because cut away section away from
The problem of causing not reaching the first glue-line periphery diffusion sheet upper stress of release from the first glue-line too long-range guided missile.
In some optional embodiments, on direction of the cut away section 205 along the first side perpendicular to diffusion sheet 203
Width W be less than or equal to 2mm.As shown in fig. 7, being cut away section in the present embodiment 205 along perpendicular to the of diffusion sheet 203
The schematic diagram of width on the direction of one side.To cut away section 205 along the first side perpendicular to diffusion sheet 203 in the present embodiment
Width W on the direction on side is not limited, and any width W that can reach the first glue-line periphery diffusion sheet upper stress of release should
In the range of the present embodiment.Width W on direction of the cut away section 205 along the first side perpendicular to diffusion sheet 203 is set
Less than or equal to 2mm, on the premise of the first glue-line periphery diffusion sheet upper stress of release is ensured, additionally it is possible to avoid because of cut away section
Vacancy section cause greatly very much diffusion sheet produce fold the problem of.
The width of cut away section 205 influences whether greatly very much the normal function of diffusion sheet 203, meanwhile, it is provided with cut away section 205
Engraved structure, width too greatly, will also result in engraved structure and become big, at high temperature under high pressure, the edge of engraved structure also can shape
Into raised or fold, the function of diffusion sheet is so still influenced whether, therefore to cut away section 205 along perpendicular to diffusion sheet 203
The limitation of width on the direction of first side is conducive on the basis of ensureing that improvement diffusion sheet 203 produces fold, does not influence
To the normal function of diffusion sheet 203.
Longitudinal cutting portion is set on the first glue-line and the corresponding diffusion sheet of the first glue-line, is conducive to release is horizontal to answer
Power；On the diffusion sheet of the first glue-line plus horizontal cut away section, the stress of release longitudinal direction can be beneficial to, it is the length of cut away section, specific
Position and quantity can adjust according to the actual needs.
In some optional embodiments, diffusion sheet 203 also includes the side 233 of second side 232 and the 3rd, the second side
The side 233 of side 232 and the 3rd is adjacent with first side 231, the threshold value second side 232 or the 3rd of cut away section 205
The distance of side 233 is more than or equal to 5mm.
In some optional embodiments, the region that first glue-line 204 is closed on diffusion sheet 203 is provided with least
It is parallel to each other between two cut away section 205, at least two cut away section 205.
The present embodiment also provides a kind of display device for including above-mentioned backlight module, and the display device can be display
Screen, mobile phone, computer, TV etc..
By above-described embodiment, backlight module of the present utility model and display device have reached following beneficial effect
Really：
(1) backlight module described in the utility model and display device, diffusion sheet is cut with being introduced in black glue in backlight module
The design in disconnected portion, improving diffusion sheet and black glue, stress concentration shows caused by the difference of convergent-divergent under the conditions of hot and humid
As solving the problem of diffusion sheet produces fold.
(2) backlight module described in the utility model and display device, cutting portion is set on diffusion sheet and black glue, is being made
It is the plastic cutting portion while diffusion sheet and black glue, simple to operate, saving cost and easily realization customization.Can be according to specific
Use condition adjusts the structure, quantity and position of cutting portion, can reach preferably stress release effect, so that more effectively
The problem of preventing diffusion sheet fold, it is ensured that the good display effect of backlight module.
It should be understood by those skilled in the art that, embodiment of the present utility model can be provided as method, device or computer
Program product.Therefore, the utility model can use complete hardware embodiment, complete software embodiment or combine software and hardware
The form of the embodiment of aspect.
Although some specific embodiments of the present utility model are described in detail by example, this area
It is to be understood by the skilled artisans that example above is merely to illustrate, rather than in order to limit scope of the present utility model.This
Field it is to be understood by the skilled artisans that can be in the case where not departing from scope and spirit of the present utility model, to above example
Modify.Scope of the present utility model is defined by the following claims.
Claims (10)
1. a kind of backlight module, it is characterised in that including：
Backlight, light guide plate and diffusion sheet；
The light guide plate includes incident side, and the backlight is set relative to the incident side of the light guide plate, and the diffusion sheet covers
It is placed on the light guide plate, and the diffusion sheet has the first side for the incident side for closing on the light guide plate, wherein,
It is provided with the diffusion sheet at the first side on the first glue-line, and the diffusion sheet and closes on first glue
The region of layer is provided with least one cut away section.
2. backlight module according to claim 1, it is characterised in that first glue-line is black glue.
3. backlight module according to claim 1, it is characterised in that the cut away section is parallel to described in the diffusion sheet
First side.
4. backlight module according to claim 1, it is characterised in that the cut away section is cutting line.
5. backlight module according to claim 1, it is characterised in that the cut away section includes the multiple hollow outs for repeating to set
Structure, being shaped as the engraved structure is circular, ellipse, polygon or irregular shape.
6. the backlight module according to claim 1-5 any one, it is characterised in that the cut away section and first glue
The distance between layer scope is more than or equal to 0 and less than or equal to 10mm.
7. the backlight module according to claim 1-5 any one, it is characterised in that the cut away section is along perpendicular to institute
Width on the direction for the first side for stating diffusion sheet is less than or equal to 2mm.
8. backlight module according to claim 1, it is characterised in that the diffusion sheet also includes second side and the 3rd side
Side, the second side and the 3rd side are adjacent with the first side, described in the threshold value of the cut away section
The distance of dual side-edge or the 3rd side is more than or equal to 5mm.
9. backlight module according to claim 1, it is characterised in that the area of first glue-line is closed on the diffusion sheet
Domain is provided between at least two cut away section, at least two cut away section and is parallel to each other.
10. a kind of display device, it is characterised in that including the backlight module as described in claim 1-9 any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720101719.3U CN206450929U (en) | 2017-01-25 | 2017-01-25 | A kind of backlight module and display device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720101719.3U CN206450929U (en) | 2017-01-25 | 2017-01-25 | A kind of backlight module and display device |
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| CN206450929U true CN206450929U (en) | 2017-08-29 |
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| CN201720101719.3U Active CN206450929U (en) | 2017-01-25 | 2017-01-25 | A kind of backlight module and display device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112147735A (en) * | 2019-06-28 | 2020-12-29 | 北京小米移动软件有限公司 | Backlight module, display panel and display device |
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- 2017-01-25 CN CN201720101719.3U patent/CN206450929U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112147735A (en) * | 2019-06-28 | 2020-12-29 | 北京小米移动软件有限公司 | Backlight module, display panel and display device |
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