CN110264884A - A kind of backlight module and display device - Google Patents
A kind of backlight module and display device Download PDFInfo
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- CN110264884A CN110264884A CN201910579239.1A CN201910579239A CN110264884A CN 110264884 A CN110264884 A CN 110264884A CN 201910579239 A CN201910579239 A CN 201910579239A CN 110264884 A CN110264884 A CN 110264884A
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- film layer
- limiting section
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- surface membrane
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
- G09F9/301—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements flexible foldable or roll-able electronic displays, e.g. thin LCD, OLED
Abstract
It includes curved surface membrane material that the present invention, which provides a kind of backlight module and display device, the backlight module, and curved surface membrane material includes the multiple film layers being stacked；Glue frame, the side of curved surface membrane material is arranged in glue frame, glue frame is hierarchic structure towards the side of curved surface membrane material, at least one stage portion is towards at least one limiting section is formed on the side of film layer in hierarchic structure, to limit displacement of the film layer on the stacking direction of film layer.In backlight module provided by the invention, by the way that hierarchic structure is arranged towards the side of curved surface film layer in glue frame, and limiting section is set at least one stage portion in hierarchic structure, so that the freedom degree of stacking direction of the film layer in glue frame along film layer is limited, guarantee that film layer is not limited along the displacement of the length direction of stage portion by glue frame simultaneously, when avoiding curved surface membrane material generation harmomegathus phenomenon, curved surface membrane material tilts, it ensure that the smooth of curved surface membrane material, it is shown so as to avoid curved-surface display device bad, improves the yield and display effect of display device.
Description
[technical field]
The present invention relates to field of display technology more particularly to a kind of backlight module and display devices.
[background technique]
In recent years, curved-surface display device with excellent visible angle and human eye vision due to experiencing, in TV, automobile
Equal fields have broad application prospects and good market potential, have obtained everybody extensive concern.
It is provided with curved surface backlight module in curved-surface display device, provides light source, curved surface backlight module for curved-surface display device
In have curved surface membrane material and glue frame, the edge of usual curved surface membrane material is Nian Jie with glue frame, to realize the connection of curved surface membrane material and glue frame,
But when carrying out reliability test to curved-surface display device, harmomegathus occurs for curved surface membrane material, but since curved surface membrane material and glue frame are bonded,
Lead to the phenomenon that curved surface membrane material harmomegathus is limited, and Yi Fasheng curved surface membrane material tilts, causes curved-surface display device to show bad.
[summary of the invention]
To solve the above-mentioned problems, the present invention provides a kind of backlight module and display device.
A kind of backlight module, comprising:
Curved surface membrane material, the curved surface membrane material include the multiple film layers being stacked；
Glue frame, the glue frame are arranged in the side of the curved surface membrane material, and the glue frame is towards the side of the curved surface membrane material
For hierarchic structure, at least one stage portion is towards being formed at least one limit on the side of the film layer in the hierarchic structure
Portion, to limit displacement of the film layer on the stacking direction of the film layer.
Optionally, the hierarchic structure includes first step portion and second step portion, the first step portion and second
It arranges along the direction that backlight is directed toward display panel in rank portion.
Optionally, the second step portion is equipped with multiple limiting sections.
Optionally, using the arragement direction of the limiting section formed in the second step portion as first direction, the glue
Frame includes two end regions and the central region between two end regions, the limit along the first direction
Position portion is at least formed in the central region.
Optionally, along the first direction, the distribution density of the limiting section increase with the curvature of the curved surface membrane material and
Increase.
Optionally, stacking is placed with multiple film layers at least one described stage portion, along the stacking side of the film layer
To, the thickness for multiple film layers that the height of the stage portion is greater than or equal to and.
Optionally, the limiting section is to be formed in the stage portion towards the protrusion on the side of the film layer, described
One stage portion is film layer loading end towards the surface of the display panel, and stacking is provided at least two on the film layer loading end
The film layer, the limiting section formed in the second step portion are oppositely arranged with the film layer loading end, and the film layer carries
The distance between face and the limiting section are greater than or equal to the thickness for the film layer being disposed proximate to the film layer loading end.
Optionally, along the stacking direction of the film layer, the thickness of the limiting section is greater than or equal to be held far from the film layer
The thickness of the film layer of section.
Optionally, the limiting section is to be formed in the stage portion towards the groove on the side of the film layer, the limit
Position portion is greater than or equal to the thickness of the film layer cooperated with the limiting section along the height of the stacking direction of the film layer.
Optionally, the hierarchic structure further includes third stage portion, and the second step portion is towards the display panel
At least one film layer is provided on surface, the height of stacking direction of the third stage portion along the film layer is greater than or equal to institute
State the thickness of film layer.
Optionally, multiple limiting sections are formed in the third stage portion, multiple limiting sections are along the first direction
Arrangement.
Optionally, the first direction is formed with gap between limiting section described in each adjacent two,
When the limiting section is protrusion, the film layer with limiting section same layer setting is towards the one of the limiting section
Side is formed with extension, the extension and the clearance fit；
When the limiting section is groove, the film layer with limiting section same layer setting is towards the one of the limiting section
Side is formed with recessed portion, the recessed portion and the clearance fit.
Optionally, between the cooperation between the first direction, the extension or the recessed portion and the limiting section
The range of gap is more than or equal to 0.1mm and to be less than or equal to 0.5mm.
Optionally, the curved surface membrane material includes the diffusion sheet being stacked, lower brightening piece and upper brightening piece.
The present invention also provides a kind of display devices, including above-mentioned backlight module.
It include layer in curved surface membrane material in a kind of backlight module provided in an embodiment of the present invention, including curved surface membrane material and glue frame
Multiple film layers of folded setting, glue frame are arranged in the side of curved surface membrane material, and glue frame towards the side of curved surface membrane material be hierarchic structure,
Be provided at least one limiting section in hierarchic structure at least one stage portion, and limiting section setting in stage portion towards curved surface film
On the side of material, to play the role of limit to the film layer in curved surface membrane material, prevent film layer from generating position along the stacking direction of film layer
It moves, film layer is caused to tilt, by the way that hierarchic structure is arranged towards the side of curved surface film layer in glue frame, and in hierarchic structure at least
At least one limiting section is set in one stage portion, so that the freedom degree of stacking direction of the film layer in glue frame along film layer is limited
System, while guaranteeing that film layer is not limited along the displacement of the length direction of stage portion by glue frame, it avoids curved surface membrane material and generates harmomegathus
When phenomenon, curved surface membrane material is tilted, that is, when doing reliability test to display device or in the use process of display device, curved surface
When harmomegathus occurs for membrane material, since the direction that harmomegathus occurs for curved surface membrane material is the length direction along stage portion, glue frame is to curved surface membrane material
Not generating interference on the length direction along stage portion, curved surface membrane material has the freedom degree that the length direction along stage portion moves,
To effectively avoid when harmomegathus occurs for curved surface membrane material, curved surface membrane material is led since the freedom degree of the length direction of stage portion is limited
The curved surface membrane material of cause tilts phenomenon, ensure that the smooth of curved surface membrane material, and bad, raising is shown so as to avoid curved-surface display device
The yield and display effect of display device.
[Detailed description of the invention]
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be to needed in the embodiment attached
Figure is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for this field
For those of ordinary skill, without creative efforts, it can also be obtained according to these attached drawings other attached drawings.
Fig. 1 is a kind of structural schematic diagram when limiting section is protrusion in backlight module provided in an embodiment of the present invention；
Fig. 2 is another structural schematic diagram when limiting section is protrusion in backlight module provided in an embodiment of the present invention；
Fig. 3 is another structural schematic diagram when limiting section is protrusion in backlight module provided in an embodiment of the present invention；
Fig. 4 is to place a tunic in first step portion when limiting section is raised in backlight module provided in an embodiment of the present invention
The structural schematic diagram of layer；
Fig. 5 is to place two membranes in first step portion when limiting section is raised in backlight module provided in an embodiment of the present invention
The structural schematic diagram of layer；
Fig. 6 is a kind of structural schematic diagram when limiting section is groove in backlight module provided in an embodiment of the present invention；
The one kind for hierarchic structure that Fig. 7 is backlight module mean camber membrane material provided in an embodiment of the present invention when including 3 tunic layer
Structural schematic diagram；
Hierarchic structure that Fig. 8 is backlight module mean camber membrane material provided in an embodiment of the present invention when including 3 tunic layer it is another
A kind of structural schematic diagram；
Fig. 9 is that two groups of limits are arranged in second step portion when limiting section is groove in backlight module provided in an embodiment of the present invention
The structural schematic diagram in position portion；
Figure 10 is another structural schematic diagram when limiting section is groove in backlight module provided in an embodiment of the present invention；
Figure 11 is provided in two stage portions when limiting section is groove in backlight module provided in an embodiment of the present invention
The structural schematic diagram of limiting section；
Figure 12 is provided in two stage portions when limiting section is groove in backlight module provided in an embodiment of the present invention
The structural schematic diagram of two groups of limiting sections；
Figure 13 is to place one layer when limiting section is groove in backlight module provided in an embodiment of the present invention in first step portion
The structural schematic diagram of film layer；
Figure 14 is placed two layers in first step portion when limiting section is groove in backlight module provided in an embodiment of the present invention
The structural schematic diagram of film layer；
Figure 15 is to place trilamellar membrane layer when limiting section is groove in backlight module provided in an embodiment of the present invention in stage portion
Structural schematic diagram；
Figure 16 is to place four tunic layers in stage portion when limiting section is groove in backlight module provided in an embodiment of the present invention
Structural schematic diagram；
Figure 17 is the structural schematic diagram of display device provided in an embodiment of the present invention.
Appended drawing reference:
1- backlight module；11- curved surface membrane material；Diffusion sheet under 111-；Brightening piece under 112-；The upper brightening piece of 113-；On 114-
Diffusion sheet；12- glue frame；121- first step portion；122- second step portion；123- third stage portion；13- limiting section；2- is shown
Panel.
[specific embodiment]
For a better understanding of the technical solution of the present invention, being retouched in detail to the embodiment of the present invention with reference to the accompanying drawing
It states.
It will be appreciated that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Base
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts it is all its
Its embodiment, shall fall within the protection scope of the present invention.
The term used in embodiments of the present invention is only to be not intended to be limiting merely for for the purpose of describing particular embodiments
The present invention.In the embodiment of the present invention and the "an" of singular used in the attached claims, " described " and "the"
It is also intended to including most forms, unless the context clearly indicates other meaning.
It should be appreciated that term "and/or" used herein is only a kind of incidence relation for describing affiliated partner, indicate
There may be three kinds of relationships, for example, A and/or B, can indicate: individualism A, exist simultaneously A and B, individualism B these three
Situation.In addition, character "/" herein, typicallys represent the relationship that forward-backward correlation object is a kind of "or".
In embodiments of the present invention, a kind of backlight module 1 is provided, comprising:
Curved surface membrane material 11, curved surface membrane material 11 include the multiple film layers being stacked；
Glue frame 12, glue frame 12 are arranged in the side of curved surface membrane material 11, glue frame 12 towards the side of curved surface membrane material 11 be ladder
Structure, at least one stage portion is towards at least one limiting section 13 is formed on the side of film layer in hierarchic structure, to limit
Displacement of the film layer on the stacking direction of film layer.
In curved surface membrane material, including the lower diffusion sheet, lower brightening piece and upper brightening piece being cascading, wherein lower diffusion
Piece is for the light issued in backlight luminous board to be atomized, due to being provided with multiple LED point light sources on backlight luminous board, therefore, backlight
The light issued on lamp plate need to carry out atomization and form area source, so that backlight module shines uniformly；Lower brightening piece and upper brightening piece are equal
For prismatic lens, the light of diffusion can be subjected to optically focused in certain angle, to improve the brightness of display device.
Glue frame is made of colloidal materials, and the surrounding of curved surface membrane material is arranged in, and forms closed cyclic structure, and glue frame deviates from
The side of display panel is provided with backlight luminous board, and the hierarchic structure overlap joint in the edge and glue frame of curved surface membrane material, i.e., glue frame is to song
Facial mask material plays supporting role, so that there are mixed light heights between the light-emitting surface of backlight luminous board and curved surface membrane material, so that backlight
The light out of mould group is more uniform.
Hierarchic structure is the bulge-structure that glue frame is formed towards curved surface membrane material direction, for taking with the edge of curved surface membrane material
It connects, plays a supporting role to curved surface membrane material.
Limiting section can limit the freedom degree for the curved surface membrane material being overlapped in hierarchic structure, in the embodiment of the present invention,
Curved surface membrane material tilts in order to prevent, and limiting section limits curved surface membrane material along the freedom degree of the stacking direction of film layer.
In a kind of backlight module 1 provided in an embodiment of the present invention, including curved surface membrane material 11 and glue frame 12, in curved surface membrane material 11
Including the multiple film layers being stacked, glue frame 12 is arranged in the side of curved surface membrane material 11, and glue frame 12 is towards curved surface membrane material 11
Side is hierarchic structure, is provided at least one limiting section 13 in hierarchic structure at least one stage portion, and limiting section 13 is set
It sets in stage portion towards on the side of curved surface membrane material 11, to play the role of limit to the film layer in curved surface membrane material 11, prevents film
Layer generates displacement along the stacking direction of film layer, and film layer is caused to tilt, by the way that rank is arranged towards the side of curved surface film layer in glue frame 12
Terraced structure, and at least one limiting section 13 is set at least one stage portion in hierarchic structure, so that film layer is in glue frame 12
On limited along the freedom degree of the stacking direction of film layer, while guaranteeing displacement of the film layer along the length direction of stage portion not by glue
The limitation of frame 12, when avoiding the generation harmomegathus phenomenon of curved surface membrane material 11, curved surface membrane material 11 is tilted, that is, can when doing to display device
By property test or in the use process of display device, when harmomegathus occurs for curved surface membrane material 11, since harmomegathus occurs for curved surface membrane material 11
Direction be along stage portion length direction, glue frame 12 does not generate curved surface membrane material 11 dry on the length direction along stage portion
It relates to, curved surface membrane material 11 has the freedom degree that the length direction along stage portion moves, to effectively avoid occurring in curved surface membrane material 11
When harmomegathus, curved surface membrane material 11 tilts phenomenon caused by curved surface membrane material 11 is limited due to the freedom degree of the length direction of stage portion,
Ensure that the smooth of curved surface membrane material 11, shown so as to avoid curved-surface display device it is bad, improve display device yield and
Display effect.
Hierarchic structure includes first step portion 121 and second step portion 122, first step portion 121 and second step portion 122
It arranges along the direction that backlight is directed toward display panel 2, second step portion 122 is equipped with multiple limiting sections 13.
Fig. 1 is a kind of structural schematic diagram when limiting section is protrusion in backlight module provided in an embodiment of the present invention, and Fig. 6 is
A kind of structural schematic diagram when limiting section is groove in backlight module provided in an embodiment of the present invention, as shown in figures 1 to 6, when
When hierarchic structure includes first step portion 121 and second step portion 122, in first step portion 121 towards 2 panel of display panel
Surface is film layer loading end, and curved surface membrane material 11 is placed on film layer loading end, and limiting section 13 is formed in second step portion 122,
Curved surface membrane material 11 and limiting section 13 cooperate, to realize to curved surface membrane material 11 along the limitation of the freedom degree of the stacking direction of film layer.
In order to improve the limit effect to curved surface membrane material 11, the quantity of limiting section 13 is more than or equal to two, along limit
The arragement direction in portion 13, the distance between each adjacent two limiting section 13 range are more than or equal to 1mm and to be less than or equal to
10mm, when the distance between two neighboring limiting section is less than 1mm, the preparation process difficulty of limiting section is larger, so that limiting section
Preparation cost it is higher, when the distance between two adjacent limiting sections be greater than 10mm when, the distance between adjacent limiting section compared with
Greatly, when harmomegathus phenomenon occurs for curved surface film layer, curved surface membrane material is easily tilted, therefore, comprehensively consider, both having can guarantee limiting section, cost is relatively low
It can play good position-limiting action to curved surface membrane material again, in the embodiment of the present invention, choose between two adjacent limiting sections
Distance range is more than or equal to 1mm and to be less than or equal to 10mm；For the preparation difficulty for further decreasing limiting section, and guarantee limit
Limit effect of the position portion 13 to curved surface membrane material 11, curved surface membrane material 11 when preventing the distance between two neighboring limiting section 13 larger
Tilting is generated, can choose the distance between each adjacent two limiting section 13 range is more than or equal to 4mm and to be less than or equal to
6mm, may further ensure that limiting section, cost is relatively low and good position-limiting action can be played to curved surface membrane material.
Using the arragement direction of the limiting section 13 formed in second step portion 122 as first direction, glue frame 12 is along first direction
Central region including two end regions and between two end regions, above-mentioned limiting section 13 is at least formed on middle part
In region.
It should be noted that the length direction of above-mentioned stage portion is parallel with above-mentioned first direction.
Due to display device and curved-surface display device, and it is gradually increased along the curvature of first direction display device and reduces again,
That is the curvature of two end regions of the display device curvature that is less than central region, and in a display device, the biggish region of curvature
In, curved surface membrane material 11 is easier to the phenomenon that tilting, therefore, curved surface membrane material 11 tilts in order to prevent, in the present embodiment, at least in
Limiting section 13 is arranged in portion region, that is, limiting section 13 is arranged at least in the biggish region of curvature.
In the specific implementation process, the curvature range of curvature large area can be according to the size dimension of actual display panel 2
Value is carried out, does not do any restriction in the embodiment of the present invention.
It is worth noting that in order to further increase the yield of display device, it can be in two end regions in glue frame 12
Interior setting limiting section 13, that is, limiting section 13 is set in the lesser region of curvature in a display device, to further prevent curved surface film
Material 11 tilts.
Since the curvature of two end regions of glue frame 12 is less than the curvature of central region, in order to prevent curved surface film in realization
While material 11 tilts, the preparation cost of limiting section 13 is reduced, in the embodiment of the present invention, along first direction, limiting section 13
Distribution density with curved surface membrane material 11 curvature increase and increase, i.e., in embodiments of the present invention, 12 two ends of glue frame
The density of limiting section 13 is smaller, and the density of the limiting section 13 of central region is larger, by the end of glue frame 12 and central region
It is inside respectively provided with limiting section 13, limiting section 13 is improved to the limit effect of curved surface membrane material 11, further avoids curved surface membrane material 11
The problem of tilting.
Good position-limiting action, layer of the second step along film layer are played to curved surface membrane material 11 in order to which second step portion 122 is enough
The height in folded direction not less than the film layer placed on the film layer loading end in first step portion 121 thickness and, thus second step
Portion 122 to the film layer being placed in first step portion 121, to be directed toward by curved surface membrane material 11 one-movement-freedom-degree in 12 direction of glue frame into
Row limitation, to play the role of limit to curved surface membrane material 11, prevents curved surface membrane material 11 from shifting.
Two film layers, and the limit by being formed in second step portion 122 are placed on the film layer loading end in first step portion 121
Position portion 13 limits the film layer close to film layer loading end, to prevent the film layer from moving in the stacking direction along film layer, works as song
When facial mask material includes multiple film layers, hierarchic structure further includes third stage portion 123, to rise to each film layer in curved surface membrane material 11
To good position-limiting action.
The size of the size of middle display screen and actual use need curved surface membrane material 11 according to the display device, curved surface membrane material
11 include 3 tunic layers or 4 tunic layers, when curved surface membrane material 11 include 3 tunic layer when, curved surface membrane material 11 successively include diffusion sheet, under
Brightening piece 112 and upper brightening piece 113, when curved surface membrane material 11 includes 4 tunic layer, curved surface membrane material 11 successively includes lower diffusion sheet
111, lower brightening piece 112, upper brightening piece 113 and upper diffusion sheet 114.
When curved surface membrane material 11 includes 3 tunic layer, second step portion 122 is towards being provided with one on the surface of display panel 2
A film layer, i.e., upper brightening piece 113 are placed in second step portion 122 towards on the surface of display panel 2, at this point, third stage portion
123 height is greater than or equal to the thickness of upper brightening piece 113.
When curved surface membrane material 11 includes 4 tunic layer, second step portion 122 is towards being stacked on the surface of display panel 2
There are two film layer, i.e., surface setting of the upper brightening piece 113 close to second step portion 122 towards display panel 2, upper diffusion sheet 114
It is arranged close to upper brightening piece 113, at this point, the height of third stage portion 123 is greater than or equal to upper brightening piece 113 and upper diffusion sheet
114 thickness and, and formed in third stage portion 123 along first direction multiple for limiting upper brightening piece 113 along the layer of film layer
The limiting section 13 of folded direction movement.
The displacement of stacking direction of the restricted curved surface membrane material 11 along film layer is used for according to above-mentioned limiting section 13, limiting section 13 can be with
For the bulge-structure or groove structure being formed in stage portion.
Fig. 2 is another structural schematic diagram when limiting section is protrusion in backlight module provided in an embodiment of the present invention；Fig. 3
It is another structural schematic diagram when limiting section is protrusion in backlight module provided in an embodiment of the present invention；Fig. 4 is of the invention real
Apply the structural schematic diagram for placing a tunic layer when limiting section is protrusion in the backlight module of example offer in first step portion；Fig. 5 is
The structural representation of two layers of film layer is placed when limiting section is protrusion in backlight module provided in an embodiment of the present invention in first step portion
Figure.
As shown in Figures 1 to 5, firstly, by taking limiting section 13 is bulge-structure as an example.
The side of second step portion 122 towards curved surface membrane material 11 is formed with limiting section 13, and limiting section 13 is towards display surface
The surface co-planar of the surface of plate 2 and second step portion 122 towards display panel 2, the limiting section 13 being arranged in second step portion 122
The distance between the film layer loading end in first step portion 121 is greater than or equal to the thickness of lower diffusion sheet 111, and is less than lower diffusion
The thickness of piece 111 and lower brightening piece 112 and, and the limiting section 13 in second step portion 122 is big along the thickness of the stacking direction of film layer
In or equal to the thickness of lower brightening piece 112 can be by lower brightening piece 112 and the limit in second step portion 122 in the embodiment of the present invention
The setting of 13 same layer of position portion.
As shown in Fig. 2, it can be not provided with limiting section 13 in third stage portion 123 when curved surface membrane material 11 includes 3 tunic layer,
When in third stage portion 123 towards when shading glue is arranged on the surface of display panel 2, can be by shading glue to upper brightening piece 113
Limit, to prevent upper brightening piece 113 from tilting.
As shown in Figures 3 to 5, when curved surface membrane material 11 includes 4 tunic layer, third stage portion 123 is towards curved surface membrane material 11
Side be provided with limiting section 13, and limiting section 13 is towards the side of display panel 2 and third stage portion 123 towards display panel
2 side is coplanar, and the limiting section 13 in third stage portion 123 and second step portion 122 are towards shape between the surface of display panel 2
At gap distance be greater than or equal to upper brightening piece 113 thickness, and be less than upper brightening piece 113 and upper diffusion sheet 114 thickness
Degree and, and the limiting section 13 formed in third stage portion 123 along the stacking direction of film layer thickness be greater than or equal to upper diffusion sheet
114 thickness, the limiting section 13 formed in the embodiment of the present invention in third stage portion 123 and upper 114 same layer of diffusion sheet are arranged.
In addition, being formed with gap, lower lustre adding layer and upper diffusion sheet between each adjacent two limiting section 13 along first direction
114 are each formed with the extension with clearance fit towards the side of limiting section 13, and lower brightening piece 112 passes through with upper diffusion sheet 114
With the clearance fit between limiting section 13, lower brightening piece 112 and upper diffusion sheet 114 are limited along the displacement of first direction, effectively
Prevent the position of lower brightening piece 112 and upper diffusion sheet 114 from generating offset.
It is worth noting that when clearance fit between extension and limiting section 13, there are fit clearance, fit clearance
Size is related to the coefficient of expansion of film layer, when the coefficient of expansion for the film layer that the gap formed between limiting section 13 is cooperated is got over
When big, the fit clearance between extension and limiting section 13 is bigger, and specifically, the range of fit clearance can be greater than or equal to
0.1mm and be less than or equal to 0.5mm, when the size of fit clearance be less than 0.1mm when, when curved surface membrane material occur harmomegathus phenomenon when,
The size of fit clearance is less than the size of curved surface membrane material expansion, the tilting of curved surface membrane material is easily led to, when the size of fit clearance is greater than
When 0.5mm, since the size of fit clearance is larger, prevent limiting section is good from playing along the displacement of first direction to curved surface membrane material
Good limitation easily makes curved surface membrane material generate offset, influences the display effect of display device, therefore, comprehensively consider, in order to both can guarantee
Curved surface membrane material has good harmomegathus space, and can prevent curved surface membrane material from deviating, and in the embodiment of the present invention, chooses fit clearance
Range can be greater than or equal to 0.1mm and be less than or equal to 0.5mm, in order to further prevent curved surface membrane material deviate, can choose and match
The range for closing gap is more than or equal to 0.1mm and to be less than or equal to 0.25mm, further can both can guarantee that curved surface membrane material had
There is good harmomegathus space, and can prevent curved surface membrane material from deviating.
The one kind for hierarchic structure that Fig. 7 is backlight module mean camber membrane material provided in an embodiment of the present invention when including 3 tunic layer
Structural schematic diagram；Hierarchic structure when including 3 tunic layer that Fig. 8 is backlight module mean camber membrane material provided in an embodiment of the present invention
Another structural schematic diagram；Fig. 9 be in backlight module provided in an embodiment of the present invention limiting section be groove when second step portion on
The structural schematic diagram of two groups of limiting sections is set；When Figure 10 is that limiting section is groove in backlight module provided in an embodiment of the present invention
Another structural schematic diagram；Figure 11 be in backlight module provided in an embodiment of the present invention limiting section be groove when two stage portions on
It is provided with the structural schematic diagram of limiting section；Figure 12 is two when limiting section is groove in backlight module provided in an embodiment of the present invention
The structural schematic diagram of two groups of limiting sections is provided in a stage portion；Figure 13 is limited in backlight module provided in an embodiment of the present invention
The structural schematic diagram of a tunic layer is placed when position portion is groove in first step portion；Figure 14 is backlight provided in an embodiment of the present invention
The structural schematic diagram of two layers of film layer is placed when limiting section is groove in mould group in first step portion；Figure 15 is that the embodiment of the present invention mentions
The structural schematic diagram of trilamellar membrane layer is placed when limiting section is groove in the backlight module of confession in stage portion；Figure 16 is implementation of the present invention
The structural schematic diagram of four tunic layers is placed when limiting section is groove in the backlight module that example provides in stage portion.
As shown in Fig. 6 to Figure 16, by taking limiting section 13 is groove structure as an example.
Second step portion 122 forms groove, as limiting section 13, limiting section 13 and lower expansion towards the side of curved surface membrane material 11
Discrete piece 111 cooperates, and limiting section 13 is greater than or equal to the thickness of lower diffusion sheet 111 along the height of the stacking direction of film layer, and small
In lower diffusion sheet 111 and lower brightening piece 112 thickness and, can be by lower diffusion sheet 111 and second step portion in the embodiment of the present invention
13 same layer of limiting section setting on 122.
As shown in fig. 7, it can be not provided with limiting section 13 in third stage portion 123 when curved surface membrane material 11 includes 3 tunic layer,
When in third stage portion 123 towards when shading glue is arranged on the surface of display panel 2, can be by shading glue to upper brightening piece 113
Limit, to prevent upper brightening piece 113 from tilting；Alternatively,
As shown in figure 8, forming groove towards the side of curved surface membrane material 11 in third stage portion 123, that is, form limiting section
13, for cooperating with upper lustre adding layer, to limit upper displacement of the lustre adding layer along the stacking direction of film layer, the limit of third stage portion 123
Position portion 13 is greater than or equal to the thickness of upper brightening piece 113 along the height of the stacking direction of film layer.
As shown in figure 11, when curved surface membrane material 11 include 4 tunic layer when, third stage portion 123 towards curved surface membrane material 11 one
Side forms groove, that is, limiting section 13 is formed, for cooperating with upper lustre adding layer, to limit upper lustre adding layer along the stacking direction of film layer
Displacement, the limiting section 13 of third stage portion 123 is greater than or equal to the thickness of upper brightening piece 113 along the height of the stacking direction of film layer
Degree, also, third stage portion along the height of the stacking direction of film layer be greater than or equal to upper brightening piece and upper diffusion sheet thickness and,
In order to which the optical device to curved surface membrane material away from backlight luminous board side assembles, while occurring prevented also from light leakage phenomena.
As shown in figure 12, it in order to limit upper diffusion sheet 114 along the displacement of first direction, can be set in third stage portion 123
Limiting section 13 corresponding with upper diffusion sheet 114 is set, to prevent upper diffusion sheet 114 from deviating.
As shown in Fig. 9, Figure 10 and Figure 12, when curved surface membrane material 11 includes 3 tunic layers or 4 tunic layer, second step portion 122
On it is settable for limiting the limiting section 13 of lower brightening piece 112, realize the limit of the displacement to lower brightening piece 112 along first direction
System, to prevent lower brightening piece 112 from deviating.
In addition, gap is formed between each adjacent two limiting section 13 along first direction, with the setting of 13 same layer of limiting section
The side of film layer towards limiting section 13 is formed with recessed portion, recessed portion and clearance fit.The gap that is formed between limiting section 13 with
Recessed portion cooperation limits the displacement with the film layer of 13 same layer of limiting section setting along first direction, so that it is inclined to prevent film layer from occurring
It moves.
As shown in Figure 13 to 16, by taking curved surface membrane material includes 4 tunic layers as an example, two film layers are set in the first adjustment portion,
In, lower diffusion sheet is provided on the film layer loading end in first step portion, lower diffusion sheet and limiting section cooperate, to limit lower diffusion sheet
Displacement along the stacking direction of film layer and the displacement along first direction effectively prevent lower diffusion sheet and occur to tilt and deviate,
Lower brightening piece is arranged away from the side of film layer loading end in lower diffusion sheet, and lower brightening piece and limiting section cooperate, to limit lower brightening piece
Upper brightening piece is set along the displacement of first direction, on lower brightening piece, and the limiting section formed on upper brightening piece and third stage portion is matched
It closes, to limit the displacement of upper stacking direction of the brightening piece along first direction and along film layer, upper brightening piece is limited by limiting section
Displacement along the stacking direction of film layer, it can be achieved that limit the displacement of lower stacking direction of the brightening piece along film layer by upper brightening piece,
Finally, upper diffusion sheet is arranged on upper brightening piece, upper diffusion sheet and limiting section cooperate, to limit upper diffusion sheet along first direction
Displacement, when backlight module is connect with display panel, shading glue, the setting of shading glue is arranged away from the side of backlight luminous board in glue frame
Upper diffusion sheet can be limited along the displacement of the stacking direction of film layer, to prevent upper diffusion sheet from tilting.
It is worth noting that limiting section 13 and when cooperating with the film layer of its same layer setting and recessed portion and limiting section 13
Between clearance fit when, there are fit clearance, the size of fit clearance and the coefficient of expansion of film layer are related, when with limiting section 13
Or the coefficient of expansion of film layer that is cooperated of the gap formed between limiting section 13 it is bigger when, fit clearance is bigger, specifically, matches
The range for closing gap can be greater than or equal to 0.1mm and be less than or equal to 0.5mm, when the size of fit clearance is less than 0.1mm, when
When harmomegathus phenomenon occurs for curved surface membrane material, the size of fit clearance is less than the size of curved surface membrane material expansion, easily leads to curved surface membrane material and sticks up
It rises, when the size of fit clearance is greater than 0.5mm, since the size of fit clearance is larger, so that limiting section is to curved surface membrane material edge
The displacement of first direction cannot play good limitation, so that curved surface membrane material is generated offset, influence the display effect of display device,
Therefore comprehensively consider, in order to not only can guarantee that curved surface membrane material has good harmomegathus space, but also it can prevent curved surface membrane material from deviating, this
In inventive embodiments, the range for choosing fit clearance can be greater than or equal to 0.1mm and be less than or equal to 0.5mm, in order to further
Prevent curved surface membrane material from deviating, the range that can choose fit clearance is more than or equal to 0.1mm and to be less than or equal to 0.25mm, can be with
It further not only can guarantee that curved surface membrane material had good harmomegathus space, but also can prevent curved surface membrane material from deviating.
Figure 17 is a kind of structural schematic diagram of display device provided in an embodiment of the present invention, and as shown in figure 17, the present invention is real
It applies example and additionally provides a kind of display device, including above-mentioned backlight module 1 and display panel 2.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent substitution, improvement and etc. done be should be included within the scope of the present invention.
Claims (15)
1. a kind of backlight module characterized by comprising
Curved surface membrane material, the curved surface membrane material include the multiple film layers being stacked；
Glue frame, the glue frame are arranged in the side of the curved surface membrane material, the glue frame towards the side of the curved surface membrane material be rank
Terraced structure, in the hierarchic structure at least one stage portion towards being formed at least one limiting section on the side of the film layer,
To limit displacement of the film layer on the stacking direction of the film layer.
2. backlight module according to claim 1, which is characterized in that the hierarchic structure includes first step portion and second
Stage portion, the first step portion and the second step portion arrange along the direction that backlight is directed toward display panel.
3. backlight module according to claim 2, which is characterized in that the second step portion is equipped with multiple limits
Portion.
4. backlight module according to claim 3, which is characterized in that with the limit formed in the second step portion
The arragement direction in portion is first direction, and the glue frame includes two end regions along the first direction and is located at described in two
Central region between end regions, the limiting section is at least formed in the central region.
5. backlight module according to claim 4, which is characterized in that along the first direction, the distribution of the limiting section
Density increases with the curvature of the curved surface membrane material and is increased.
6. backlight module according to claim 5, which is characterized in that stacking is placed with more at least one described stage portion
A film layer, along the stacking direction of the film layer, the thickness for multiple film layers that the height of the stage portion is greater than or equal to
Degree and.
7. backlight module according to claim 6, which is characterized in that the limiting section is to be formed in the stage portion direction
Protrusion on the side of the film layer, the first step portion towards the surface of the display panel be film layer loading end, it is described
Stacking is provided at least two film layers, the limiting section formed in the second step portion and the film layer on film layer loading end
Loading end is oppositely arranged, and the distance between the film layer loading end and the limiting section are greater than or equal to and film layer carrying
The thickness for the film layer that face is disposed proximate to.
8. backlight module according to claim 7, which is characterized in that along the stacking direction of the film layer, the limiting section
Thickness be greater than or equal to far from the film layer loading end the film layer thickness.
9. backlight module according to claim 6, which is characterized in that the limiting section is to be formed in the stage portion direction
Groove on the side of the film layer, the limiting section are greater than or equal to and the limit along the height of the stacking direction of the film layer
The thickness of the film layer of position portion cooperation.
10. according to the described in any item backlight modules of claim 8 or 9, which is characterized in that the hierarchic structure further includes third
Stage portion, the second step portion is towards being provided at least one film layer, the third step on the surface of the display panel
Portion is greater than or equal to the thickness of the film layer along the height of the stacking direction of the film layer.
11. backlight module according to claim 10, which is characterized in that be formed with multiple limits in the third stage portion
Portion, multiple limiting sections are arranged along the first direction.
12. backlight module according to claim 11, which is characterized in that along the first direction, described in each adjacent two
Gap is formed between limiting section,
When the limiting section be protrusion when, with the limiting section same layer setting the film layer towards the limiting section side shape
At there is an extension, the extension and the clearance fit；
When the limiting section be groove when, with the limiting section same layer setting the film layer towards the limiting section side shape
At there is a recessed portion, the recessed portion and the clearance fit.
13. backlight module according to claim 12, which is characterized in that along the first direction, the extension or institute
The range for stating the fit clearance between recessed portion and the limiting section is more than or equal to 0.1mm and to be less than or equal to 0.5mm.
14. backlight module according to claim 1, which is characterized in that the curved surface membrane material includes the diffusion being stacked
Piece, lower brightening piece and upper brightening piece.
15. a kind of display device, which is characterized in that including such as described in any item backlight modules of claim 1-14.
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| CN110264884B (en) | 2021-09-21 |
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