CN105715984A - Backlight module and liquid crystal display device - Google Patents
Backlight module and liquid crystal display device Download PDFInfo
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- CN105715984A CN105715984A CN201410711163.0A CN201410711163A CN105715984A CN 105715984 A CN105715984 A CN 105715984A CN 201410711163 A CN201410711163 A CN 201410711163A CN 105715984 A CN105715984 A CN 105715984A
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- guide plate
- light guide
- supporting surface
- light source
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Abstract
The invention provides a liquid crystal display device. The liquid crystal display device comprises a backlight module and a display panel arranged on the backlight module. The backlight module comprises a light guide plate, a light source, an optical film and a rubber frame. The light source is arranged on the side face of the light guide plate. The optical film is arranged on the light guide plate. The rubber frame is defined by a plurality of side walls, and the light guide plate, the light source and the optical film are fixed in the rubber frame. One side wall of the side, close to the light source, of the rubber frame extends inwards to form an extension wall. The extension wall covers the light source and carries the display panel. The extension wall extends inwards to form an elastic arm. The elastic arm comprises a top surface and an abutting surface opposite to the top surface. The elastic arm deforms elastically when pressed, so that the abutting surface is made to abut against the light guide plate or the optical film.
Description
Technical field
The present invention relates to a kind of backlight module and use the liquid crystal indicator of this backlight module.
Background technology
A kind of backlight module, including backboard, it is located at the reflector plate in backboard, it is located at the light guide plate on reflector plate, it is located at the optical diaphragm group on light guide plate, it is located in backlight and the backlight that light guide plate is arranged relatively, it is located at the glue frame on backboard and is located at above backlight and light guide plate light inputting end and by filling in tightly, attach or be fastened on the elastic barricade on glue frame, this elasticity barricade includes bottom surface and the side with plane perpendicular, the upper surface of this bottom surface and this side and light guide plate and backlight close contact, thus luminous reflectance is returned in light guide plate, with the problem solving backlight module incident side light leak.So, this backlight module need to additionally arrange this elasticity barricade, increases hardware cost and assembling procedure.
Summary of the invention
In view of problem above, it is necessary to provide a kind of backlight module preventing light leak.
There is a need to provide a kind of liquid crystal indicator preventing light leak.
A kind of backlight module, this backlight module includes light guide plate, light source, blooming piece and glue frame.Described light source is located at described light guide plate side, and described blooming piece is located on described light guide plate, and described glue frame includes end to end multiple sidewall, and described light guide plate, described light source and described blooming piece are fixed in described glue frame.This glue frame wherein sidewall described near described light source side extends inwardly to form a wall extension, and this wall extension covers described light source.Described wall extension extends inwardly to form an elastic arm.Described elastic arm includes an end face and a supporting surface relative with described end face.Elastic deformation is there is, so that described supporting surface is held on described light guide plate or described blooming piece, to stop that the light that described light source sends spills from the lateral margin of described light guide plate or described blooming piece during described elastic arm pressurized.
A kind of liquid crystal indicator, this liquid crystal indicator includes backlight module and is located at the display floater on described backlight module.Described backlight module includes light guide plate, light source, blooming piece and glue frame.Described light source is located at described light guide plate side, and described blooming piece is located on described light guide plate, and described glue frame includes end to end multiple sidewall, and described light guide plate, described light source and described blooming piece are fixed in described glue frame.This glue frame wherein sidewall described near described light source side extends inwardly to form a wall extension, and this wall extension covers described light source and carries described display floater.Described wall extension extends inwardly to form an elastic arm.Described elastic arm includes an end face and a supporting surface relative with described end face.Elastic deformation is there is, so that described supporting surface is held on described light guide plate or described blooming piece, to stop that the light that described light source sends spills from the lateral margin of described light guide plate or described blooming piece during described elastic arm pressurized.
Compared to prior art, the backlight module of the present invention and liquid crystal indicator, utilize the elastic arm generation elastic deformation extended to form from glue frame to be held on light guide plate or blooming piece to reach to prevent the effect of light leak, it is not necessary to hardware is additionally set, advantageously reduce hardware cost and simplify assembling procedure.
Accompanying drawing explanation
Fig. 1 is the axonometric chart of the liquid crystal indicator that first embodiment of the invention provides；
Fig. 2 is the three-dimensional exploded view of Fig. 1；
Fig. 3 is the Fig. 1 profile along III-III direction；
Fig. 4 is the Fig. 3 partial enlarged drawing along IV place；
Fig. 5 is the profile of the liquid crystal indicator that second embodiment of the invention provides；
Fig. 6 is the profile of the liquid crystal indicator that third embodiment of the invention provides；
Fig. 7 is the profile of the liquid crystal indicator that four embodiment of the invention provides.
Main element symbol description
Following detailed description of the invention will further illustrate the present invention in conjunction with above-mentioned accompanying drawing.
Detailed description of the invention
Please refer to the axonometric chart that Fig. 1 and Fig. 2, Fig. 1 are the liquid crystal displays 10 that first embodiment of the invention provides.Fig. 2 is the three-dimensional exploded view of Fig. 1.The liquid crystal display 10 of first embodiment of the invention includes display floater 170 and the backlight module 100 that stacking is arranged, and this backlight module 100 includes backboard 110, reflector plate 140, light guide plate 120, blooming piece 130, light source 150, light source strip 180 and glue frame 160.Described reflector plate 140 is contained in described backboard 110, described light guide plate 120 is arranged on described reflector plate 140, described blooming piece 130 is arranged on described light guide plate 120, described light source 150 is fixed on described light source strip 180, described glue frame 160 is contained in described backboard 110, and described glue frame 160 fixes described blooming piece 130, described light guide plate 120 and described light source strip 180, described display floater 170 is arranged on described blooming piece 130 and is accepted by described glue frame 160, the upper surface of described glue frame 160 and described display floater 170 are fixed together by glue or adhesive tape.
In the present embodiment, described blooming piece 130 includes diffusion sheet 131 and the two blast sheets 132 that set gradually from the bottom to top.In other embodiments, described blooming piece 130 can be only include blast sheet 132 described in diffusion sheet 131 and two described in two, can also be that described blooming piece 130 only includes diffusion sheet 131 described in two, it is also possible to be other collocation mode comprising at least one described diffusion sheet 131.Described light guide plate 120 has an incidence surface 121, the contiguous described incidence surface 121 of described light source 150 is arranged, the light that described light source 150 sends, sequentially pass through again after described diffusion sheet 131, described two blast sheets 132 through described incidence surface 121, change into the backlight that brightness is high and briliancy is homogeneous and inject described display floater 170.
It is the Fig. 1 profile along III-III direction please with reference to Fig. 3 and Fig. 4, Fig. 3.Fig. 4 is the Fig. 3 partial enlarged drawing along IV place.Described glue frame 160 has four sidewalls 161, and described four sidewalls 161 join end to end to enclose to set and form the square structure closed, and described light guide plate 120, described blooming piece 130 and described light source 150 are installed in described glue frame 160.Described glue frame 160 adopts the mode molding of injection mo(u)lding, and its color is white.The wherein sidewall 161 described in of contiguous described light source 150 extends inwardly to form a wall extension 1611, and the upper surface of this wall extension 1611 is fixed in the carrying of described display floater 170.In the present embodiment, described light source 150 is between the described sidewall 161 and described light guide plate 120 of described glue frame 160, and described wall extension 1611 is positioned at above described light source 150 and covers described light source 150.
The end of the contiguous described display floater 170 of described wall extension 1611 extends inwardly to form has elastic elastic arm 1612.Described elastic arm 1612 include an end face 1612a and with a described supporting surface 1612b relative for end face 1612a, the height of this supporting surface 1612b is lower than this wall extension 1611 lower surface height, described supporting surface 1612b is held on described light guide plate 120 to form trace interference, thus preventing the light that described light source 150 sends from spilling from described light guide plate 120 lateral margin, the utilization rate causing described light source 150 is low and reduces the optics taste of described backlight module 100.Wherein, when described supporting surface 1612b and described light guide plate 120 form trace interference, amount of interference is more than the assembling tolerance sum of the manufacturing tolerance of described blooming piece 130, the manufacturing tolerance of described light guide plate 120 and described backlight module 100, but described supporting surface 1612b and the amount of interference of described light guide plate 120 should be excessive and damage described light guide plate 120.Owing to described elastic arm 1612 is to be integrally formed from described glue frame 160, it is not necessary to additionally arrange hardware and form close contact with described light guide plate 120, advantageously reduce hardware cost.Additionally, this elastic arm 1612 is formed on described glue frame 160, therefore can assemble with described glue frame 160 simultaneously, be conducive to simplifying assembling procedure.
The face that described end face 1612a is an incline structure of described elastic arm 1612, its upper surface with described wall extension 1611 is stepped, and described end face 1612a is lower than the upper surface of described wall extension 1611, and is not connected with described display floater 170.Described end face 1612a is possible to prevent described elastic arm 1612 to conflict described display floater 170 when prepressing deformation lower than the upper surface of described wall extension 1611 and causes the damage of described display floater 170.Described supporting surface 1612b is also the face of incline structure, and the lower surface of described supporting surface 1612b and described wall extension 1611 is stepped, and described supporting surface 1612b is lower than the lower surface of described wall extension 1611.Described supporting surface 1612b, lower than the lower surface of described wall extension 1611, advantageously forms the described supporting surface 1612b structure contacted all the time with described light guide plate 120, thus preventing light leak.
When described display floater 170 is installed on described glue frame 160, there is elastic described elastic arm 1612 and produce elastic deformation, make the described supporting surface 1612b upper surface being held in described light guide plate 120 form trace and interfere.And when described display floater 170 is not installed on described glue frame 160, there is not elastic deformation in described elastic arm 1612, in the raw, the front end of described supporting surface 1612b now just contacts with described light guide plate 120 or has certain interval, and the surface being in the described supporting surface 1216b under this naturalness and described light guide plate 120 is relative tilt state.In the present embodiment, the front end of described supporting surface 1612b is the upper surface being partially submerged into described light guide plate 120.Owing to described elastic arm 1612 has elasticity, it is possible to when installing described display floater 170 to described glue frame 160, reach the best prevent the effect of light leak by finely tuning the exposure of described elastic arm 1612 and described light guide plate 120.Owing to described elastic arm 1612 has elasticity, it is possible to when installing described display floater 170 to described glue frame 160, reach the best prevent the effect of light leak by finely tuning the exposure of described elastic arm 1612 and described light guide plate 120.
In other embodiments, described supporting surface 1612b can also be globoidal structure, when described supporting surface 1612b is globoidal structure, the center of circle of described supporting surface 1612b is in the side away from described light guide plate 120, and described light guide plate 120 forms tangent line with described supporting surface 1612b and intersects.Be there is elastic described elastic arm 1612 produce elastic deformation by then passing through and be held on described light guide plate 120, it can be ensured that the described supporting surface 1612b of described elastic arm 1612 and described light guide plate 120 are in close contact, thus reaching preferably light leakage effect.And owing to described supporting surface 1612b is inclined-plane or globoidal structure, therefore to the flatness of described supporting surface 1612b it is not strictly necessary that effect of light leak can be realized preventing, thus reducing product manufacture difficulty.
Referring to Fig. 5, Fig. 5 is the profile of the liquid crystal display 10 that second embodiment of the invention provides, the liquid crystal display 10 that second embodiment of the invention provides includes display floater 170 and backlight module 100, and this backlight module 100 includes backboard 110, reflector plate 140, light guide plate 120, blooming piece 130, light source 150, light source strip 180 and glue frame 160.Described reflector plate 140 is contained in described backboard 110, described light guide plate 120 is arranged on described reflector plate 140, described blooming piece 130 is arranged on described light guide plate 120, described light source 150 is fixed on described light source strip 180, described glue frame 160 is contained in described backboard 110, and described glue frame 160 fixes described blooming piece 130, described light guide plate 120 and described light source strip 180, described display floater 170 is arranged on described blooming piece 130, and accepted by described glue frame 160, the upper surface of described glue frame 160 and described display floater 170 are fixed together by glue or adhesive tape.
In the present embodiment, described blooming piece 130 includes diffusion sheet 131 and the two blast sheets 132 that set gradually from the bottom to top.In other embodiments, described blooming piece 130 can be only include blast sheet 132 described in diffusion sheet 131 and two described in two, can also be that described blooming piece 130 only includes diffusion sheet 131 described in two, it is also possible to be other collocation mode comprising at least one described diffusion sheet 131.Described light guide plate 120 has an incidence surface 121, the contiguous described incidence surface 121 of described light source 150 is arranged, the light that described light source 150 sends, sequentially pass through again after described diffusion sheet 131, described two blast sheets 132 through described incidence surface 121, change into the backlight that brightness is high and briliancy is homogeneous and inject described display floater 170.
Described glue frame 160 has four sidewalls 161, and described four sidewalls 161 join end to end to enclose to set and form the square structure closed, and described light guide plate 120, described blooming piece 130 and described light source 150 are installed in described glue frame 160.Described glue frame 160 adopts the mode molding of injection mo(u)lding, and its color is white.The wherein sidewall 161 described in of contiguous described light source 150 extends inwardly to form a wall extension 1611, and the upper surface of this wall extension 1611 is fixed in the carrying of described display floater 170.In the present embodiment, described light source 150 is between the described sidewall 161 and described light guide plate 120 of described glue frame 160, and described wall extension 1611 is positioned at above described light source 150 and covers described light source 150.
The end of the contiguous described display floater 170 of described wall extension 1611 extends inwardly to form has elastic elastic arm 1612.Described elastic arm 1612 include an end face 1612a and with a described supporting surface 1612b relative for end face 1612a, the height of this supporting surface 1612b is lower than this wall extension 1611 lower surface height, described supporting surface 1612b is held on described light guide plate 120 to form trace interference, thus preventing the light that described light source 150 sends from spilling from described light guide plate 120 lateral margin, the utilization rate causing described light source 150 is low and reduces the optics taste of described backlight module 100.Wherein, when described supporting surface 1612b and described light guide plate 120 form trace interference, amount of interference is more than the assembling tolerance sum of the manufacturing tolerance of described blooming piece 130, the manufacturing tolerance of described light guide plate 120 and described backlight module 100, but described supporting surface 1612b and the amount of interference of described light guide plate 120 should be excessive and damage described light guide plate 120.Owing to described elastic arm 1612 is to be integrally formed from described glue frame 160, it is not necessary to additionally arrange hardware and form close contact with described light guide plate 120, advantageously reduce hardware cost.Additionally, this elastic arm 1612 is formed on described glue frame 160, therefore can assemble with described glue frame 160 simultaneously, be conducive to simplifying assembling procedure.
The face that described end face 1612a is an incline structure of described elastic arm 1612, its upper surface with described wall extension 1611 is stepped, and described end face 1612a is lower than the upper surface of described wall extension 1611, and is not connected with described display floater 170.Described end face 1612a is possible to prevent described elastic arm 1612 to conflict described display floater 170 when prepressing deformation lower than the upper surface of described wall extension 1611 and causes the damage of described display floater 170.Described supporting surface 1612b is also the face of incline structure, and the lower surface of described supporting surface 1612b and described wall extension 1611 is stepped, and described supporting surface 1612b is lower than the lower surface of described wall extension 1611.Described supporting surface 1612b, lower than the lower surface of described wall extension 1611, advantageously forms the described supporting surface 1612b structure contacted all the time with described light guide plate 120, thus preventing light leak.
When described display floater 170 is installed on described glue frame 160, there is elastic described elastic arm 1612 and produce elastic deformation, be held in the upper surface of described light guide plate 120.And when described display floater 170 is not installed on described glue frame 160, there is not elastic deformation in described elastic arm 1612, in the raw, the front end of described supporting surface 1612b now just contacts with described light guide plate 120 or has certain interval, and the surface being in the described supporting surface 1216b under this naturalness and described light guide plate 120 is relative tilt state.In the present embodiment, the front end of described supporting surface 1612b is the upper surface being partially submerged into described light guide plate 120.Owing to described elastic arm 1612 has elasticity, it is possible to when installing described display floater 170 to described glue frame 160, reach the best prevent the effect of light leak by finely tuning the exposure of described elastic arm 1612 and described light guide plate 120.In other embodiments, described supporting surface 1612b can also be globoidal structure, when described supporting surface 1612b is globoidal structure, the center of circle of described supporting surface 1612b is in the side away from described light guide plate 120, and described light guide plate 120 forms tangent line with described supporting surface 1612b and intersects.Be there is elastic described elastic arm 1612 produce elastic deformation by then passing through and be held on described light guide plate 120, it can be ensured that the described supporting surface 1612b of described elastic arm 1612 and described light guide plate 120 are in close contact, thus reaching preferably light leakage effect.And owing to described supporting surface 1612b is inclined-plane or globoidal structure, therefore to the flatness of described supporting surface 1612b it is not strictly necessary that effect of light leak can be realized preventing.
In the present embodiment, described elastic arm 1612 also includes connecting portion 1613, and described connecting portion 1613 connects described supporting surface 1612b and described wall extension 1611.Described connecting portion 1613 has at least one depressed part 1613a, to increase the elasticity of described elastic arm 1612.In the present embodiment, described connecting portion 1613 has a described depressed part 1613a and the described curved structure of depressed part 1613a.Preferably, described depressed part 1613a is the direction depression of the laterally closer described end face 1612a along described supporting surface 1612b.The curved depressed part of described connecting portion 1613 can be reduced or remitted described connecting portion 1613 and produce stress concentration phenomenon and cause described elastic arm 1612 to be easily broken off.
Refer to Fig. 6, Fig. 6 is the profile of the liquid crystal display 10 that third embodiment of the invention provides, the liquid crystal display 10 that third embodiment of the invention provides includes display floater 170 and backlight module 100, and this backlight module 100 includes backboard 110, reflector plate 140, light guide plate 120, blooming piece 130, light source 150, light source strip 180 and glue frame 160.Described reflector plate 140 is contained in described backboard 110, described light guide plate 120 is arranged on described reflector plate 140, described blooming piece 130 is arranged on described light guide plate 120, described light source 150 is fixed on described light source strip 180, described glue frame 160 is contained in described backboard 110, and described glue frame 160 fixes described blooming piece 130, described light guide plate 120 and described light source strip 180, described display floater 170 is arranged on described blooming piece 130, and accepted by described glue frame 160, the upper surface of described glue frame 160 and described display floater 170 are fixed together by glue or adhesive tape.
In the present embodiment, described blooming piece 130 includes diffusion sheet 131 and the two blast sheets 132 that set gradually from the bottom to top.In other embodiments, described blooming piece 130 can be only include blast sheet 132 described in diffusion sheet 131 and two described in two, can also be that described blooming piece 130 only includes diffusion sheet 131 described in two, it is also possible to be other collocation mode comprising at least one described diffusion sheet 131.Described light guide plate 120 has an incidence surface 121, the contiguous described incidence surface 121 of described light source 150 is arranged, the light that described light source 150 sends, sequentially pass through again after described diffusion sheet 131, described two blast sheets 132 through described incidence surface 121, change into the backlight that brightness is high and briliancy is homogeneous and inject described display floater 170.
Described glue frame 160 has four sidewalls 161, and described four sidewalls 161 join end to end to enclose to set and form the square structure closed, and described light guide plate 120, described blooming piece 130 and described light source 150 are installed in described glue frame 160.Described glue frame 160 adopts the mode molding of injection mo(u)lding, and its color is white.The wherein sidewall 161 described in of contiguous described light source 150 extends inwardly to form a wall extension 1611, and the upper surface of this wall extension 1611 is fixed in the carrying of described display floater 170.In the present embodiment, described light source 150 is between the described sidewall 161 and described light guide plate 120 of described glue frame 160, and described wall extension 1611 is positioned at above described light source 150 and covers described light source 150.
The end of the contiguous described display floater 170 of described wall extension 1611 extends inwardly to form has elastic elastic arm 1612.Described elastic arm 1612 include an end face 1612a and with a described supporting surface 1612b relative for end face 1612a, the height of this supporting surface 1612b is lower than this wall extension 1611 lower surface height, described supporting surface 1612b is held on described light guide plate 120 to form trace interference, thus preventing the light that described light source 150 sends from spilling from described light guide plate 120 lateral margin, the utilization rate causing described light source 150 is low and reduces the optics taste of described backlight module 100.Wherein, when described supporting surface 1612b and described light guide plate 120 form trace interference, amount of interference is more than the assembling tolerance sum of the manufacturing tolerance of described blooming piece 130, the manufacturing tolerance of described light guide plate 120 and described backlight module 100, but described supporting surface 1612b and the amount of interference of described light guide plate 120 should be excessive and damage described light guide plate 120.Owing to described elastic arm 1612 is to be integrally formed from described glue frame 160, it is not necessary to additionally arrange hardware and form close contact with described light guide plate 120, advantageously reduce hardware cost.Additionally, this elastic arm 1612 is formed on described glue frame 160, therefore can assemble with described glue frame 160 simultaneously, be conducive to simplifying assembling procedure.
The face that described end face 1612a is an incline structure of described elastic arm 1612, its upper surface with described wall extension 1611 is stepped, and described end face 1612a is lower than the upper surface of described wall extension 1611, and is not connected with described display floater 170.Described end face 1612a is possible to prevent described elastic arm 1612 to conflict described display floater 170 when prepressing deformation lower than the upper surface of described wall extension 1611 and causes the damage of described display floater 170.Described supporting surface 1612b is also the face of incline structure, and the lower surface of described supporting surface 1612b and described wall extension 1611 is stepped, and described supporting surface 1612b is lower than the lower surface of described wall extension 1611.Described supporting surface 1612b, lower than the lower surface of described wall extension 1611, advantageously forms the described supporting surface 1612b structure contacted all the time with described light guide plate 120, thus preventing light leak.
When described display floater 170 is installed on described glue frame 160, there is elastic described elastic arm 1612 and produce elastic deformation, be held in the upper surface of described light guide plate 120.And when described display floater 170 is not installed on described glue frame 160, there is not elastic deformation in described elastic arm 1612, in the raw, the front end of described supporting surface 1612b now just contacts with described light guide plate 120 or has certain interval, and the surface being in the described supporting surface 1216b under this naturalness and described light guide plate 120 is relative tilt state.In the present embodiment, the front end of described supporting surface 1612b is the upper surface being partially submerged into described light guide plate 120.Owing to described elastic arm 1612 has elasticity, it is possible to when installing described display floater 170 to described glue frame 160, reach the best prevent the effect of light leak by finely tuning the exposure of described elastic arm 1612 and described light guide plate 120.In other embodiments, described supporting surface 1612b can also be globoidal structure, when described supporting surface 1612b is globoidal structure, the center of circle of described supporting surface 1612b is in the side away from described light guide plate 120, and described light guide plate 120 forms tangent line with described supporting surface 1612b and intersects.Be there is elastic described elastic arm 1612 produce elastic deformation by then passing through and be held on described light guide plate 120, it can be ensured that the described supporting surface 1612b of described elastic arm 1612 and described light guide plate 120 are in close contact, thus reaching preferably light leakage effect.And owing to described supporting surface 1612b is inclined-plane or globoidal structure, therefore to the flatness of described supporting surface 1612b it is not strictly necessary that effect of light leak can be realized preventing.
In the present embodiment, described elastic arm 1612 also includes connecting portion 1613, and described connecting portion 1613 connects described supporting surface 1612b and described wall extension 1611.Described connecting portion 1613 has at least one depressed part 1613a, to increase the elasticity of described elastic arm 1612.In the present embodiment, described connecting portion 1613 has two described depressed part 1613a and the described curved structure of depressed part 1613a.Preferably, described two depressed part 1613a be described connecting portion 1613 two opposite sides in opposite directions cave in formed.The curved depressed part of described connecting portion 1613 can be reduced or remitted described connecting portion 1613 and produce stress concentration phenomenon and cause described elastic arm 1612 to be easily broken off.
Refer to Fig. 7, Fig. 7 is the profile of the liquid crystal display 10 that four embodiment of the invention provides, the liquid crystal display 10 that four embodiment of the invention provides includes display floater 170 and backlight module 100, and this backlight module 100 includes backboard 110, reflector plate 140, light guide plate 120, blooming piece 130, light source 150, light source strip 180 and glue frame 160.Described reflector plate 140 is contained in described backboard 110, described light guide plate 120 is arranged on described reflector plate 140, described blooming piece 130 is arranged on described light guide plate 120, described light source 150 is fixed on described light source strip 180, described glue frame 160 is contained in described backboard 110, and described glue frame 160 fixes described blooming piece 130, described light guide plate 120 and described light source strip 180, described display floater 170 is arranged on described blooming piece 130, and accepted by described glue frame 160, the upper surface of described glue frame 160 and described display floater 170 are fixed together by glue or adhesive tape.
In the present embodiment, described blooming piece 130 includes diffusion sheet 131 and the two blast sheets 132 that set gradually from the bottom to top.In other embodiments, described blooming piece 130 can be only include blast sheet 132 described in diffusion sheet 131 and two described in two, can also be that described blooming piece 130 only includes diffusion sheet 131 described in two, it is also possible to be other collocation mode comprising at least one described diffusion sheet 131.Described light guide plate 120 has an incidence surface 121, the contiguous described incidence surface 121 of described light source 150 is arranged, the light that described light source 150 sends, sequentially pass through again after described diffusion sheet 131, described two blast sheets 132 through described incidence surface 121, change into the backlight that brightness is high and briliancy is homogeneous and inject described display floater 170.
Described glue frame 160 has four sidewalls 161, and described four sidewalls 161 join end to end to enclose to set and form the square structure closed, and described light guide plate 120, described blooming piece 130 and described light source 150 are installed in described glue frame 160.Described glue frame 160 adopts the mode molding of injection mo(u)lding, and its color is white.The wherein sidewall 161 described in of contiguous described light source 150 extends inwardly to form a wall extension 1611, and the upper surface of this wall extension 1611 is fixed in the carrying of described display floater 170.In the present embodiment, described light source 150 is between the described sidewall 161 and described light guide plate 120 of described glue frame 160, and described wall extension 1611 is positioned at above described light source 150 and covers described light source 150.
The end of the contiguous described display floater 170 of described wall extension 1611 extends inwardly to form has elastic elastic arm 1612.Described elastic arm 1612 include an end face 1612a and with a described supporting surface 1612b relative for end face 1612a, the height of this supporting surface 1612b lower than this wall extension 1611 lower surface height,
Described supporting surface 1612b is held on described diffusion sheet 131 to interfere forming trace, thus preventing the light that described light source 150 sends from spilling from described diffusion sheet 131 lateral margin, the utilization rate causing described light source 150 is low and reduces the optics taste of described backlight module 100.Wherein, when described supporting surface 1612b and described diffusion sheet 131 form trace interference, amount of interference is more than the assembling tolerance sum of the manufacturing tolerance of described blooming piece 130, the manufacturing tolerance of described light guide plate 120 and described backlight module 100, but described supporting surface 1612b and the amount of interference of described diffusion sheet 131 should be excessive and damage described diffusion sheet 131.Owing to described elastic arm 1612 is to be integrally formed from described glue frame 160, it is not necessary to additionally arrange hardware and form close contact with described diffusion sheet 131, advantageously reduce hardware cost.Additionally, this elastic arm 1612 is formed on described glue frame 160, therefore can assemble with described glue frame 160 simultaneously, be conducive to simplifying assembling procedure.
The face that described end face 1612a is a planar structure of described elastic arm 1612, its upper surface with described wall extension 1611 is stepped, and described end face 1612a is lower than the upper surface of described wall extension 1611, and is not connected with described display floater 170.Described end face 1612a is possible to prevent described elastic arm 1612 to conflict described display floater 170 when prepressing deformation lower than the upper surface of described wall extension 1611 and causes the damage of described display floater 170.Described supporting surface 1612b is the face of incline structure, and the lower surface of described supporting surface 1612b and described wall extension 1611 is stepped, and described supporting surface 1612b is higher than the lower surface of described wall extension 1611.Described supporting surface 1612b, higher than the lower surface of described wall extension 1611, desirably prevents described supporting surface 1612b and excessively oppresses described diffusion sheet 131 and cause described diffusion sheet 131 compression.Described wall extension 1611 lower surface is lower than the upper surface of described diffusion sheet 131, the thickness making described wall extension 1611 is made to thicker and ensures the intensity of described wall extension 1611, but described wall extension 1611 lower surface is not less than the upper surface of described light guide plate 120, can be that just to contact with described light guide plate 120 can also be have certain interval with described light guide plate 120, to prevent the lower surface of described wall extension 1611 from described light guide plate 120 is caused compression.
When described display floater 170 is installed on described glue frame 160, there is elastic described elastic arm 1612 and produce elastic deformation, it is held in the upper surface on described diffusion sheet 131, and when described display floater 170 is not installed on described glue frame 160, there is not elastic deformation in described elastic arm 1612, in the raw, the front end of described supporting surface 1612b now just contacts with described diffusion sheet 131 or has certain interval, and the surface being in the described supporting surface 1216b under this naturalness and described diffusion sheet 131 is relative tilt state.In other embodiments, when the situation that quantity is two of described diffusion sheet 131, described supporting surface 1216b is held in wherein on diffusion sheet 131 described in, it is preferable that described supporting surface 1216b is held on the described diffusion sheet 131 of lower.In the present embodiment, the front end of described supporting surface 1612b is the upper surface being partially submerged into described diffusion sheet 131.Owing to described elastic arm 1612 has elasticity, it is possible to when installing described display floater 170 to described glue frame 160, reach the best prevent the effect of light leak by finely tuning the exposure of described elastic arm 1612 and described diffusion sheet 131.
In other embodiments, described supporting surface 1612b can also be globoidal structure, when described supporting surface 1612b is globoidal structure, the center of circle of described supporting surface 1612b is in the side away from described diffusion sheet 131, and described diffusion sheet 131 forms tangent line with described supporting surface 1612b and intersects.Be there is elastic described elastic arm 1612 produce elastic deformation by then passing through and be held on described diffusion sheet 131, it can be ensured that the described supporting surface 1612b of described elastic arm 1612 and described diffusion sheet 131 are in close contact, thus reaching preferably light leakage effect.And owing to described supporting surface 1612b is inclined-plane or globoidal structure, therefore to the flatness of described supporting surface 1612b it is not strictly necessary that effect of light leak can be realized preventing.
Described elastic arm 1612 also includes a junction 1613, and described connecting portion 1613 connects described supporting surface 1612b and described wall extension 1611.In order to increase the elasticity of described elastic arm 1612, described connecting portion 1613 is provided with at least one depressed part 1613a and each all curved structure of described depressed part 1613a.Preferably, described connecting portion 1613 forms a described depressed part 1613a along the direction depression of a laterally closer described end face 1612a of described supporting surface 1612b.In other embodiments, the two opposite sides of described connecting portion 1613, namely along the side of the side of described supporting surface 1612b and described end face 1612a, depression forms depressed part 1613a described in two in opposite directions.The described curved structure of depressed part 1613a, can reduce or remit described connecting portion 1613 and produce stress concentration phenomenon and cause described elastic arm 1612 to be easily broken off.
Embodiment of above is only in order to illustrate technical scheme and unrestricted, although the present invention being described in detail with reference to better embodiment, it will be understood by those within the art that, technical scheme can be modified or equivalent replacement, without deviating from the spirit and scope of technical solution of the present invention.
Claims (15)
1. a backlight module, it is characterised in that: include light guide plate, light source, blooming piece and glue frame；Described light source is located at described light guide plate side, and described blooming piece is located on described light guide plate, and described glue frame includes end to end multiple sidewall, and described light guide plate, described light source and described blooming piece are fixed in described glue frame；This glue frame wherein sidewall described near described light source side extends inwardly to form a wall extension, and this wall extension covers described light source；Described wall extension extends inwardly to form an elastic arm；Described elastic arm includes an end face and a supporting surface relative with described end face；Occur elastic deformation so that described supporting surface is held on described light guide plate or described blooming piece during described elastic arm pressurized.
2. backlight module as claimed in claim 1, it is characterised in that when elastic deformation does not occur described elastic arm, the relatively described inclined attitude of light guide plate of described supporting surface.
3. backlight module as claimed in claim 1, it is characterised in that described supporting surface is held on described light guide plate or described blooming piece, forms part contact.
4. backlight module as claimed in claim 1, it is characterised in that described supporting surface is globoidal structure or ramp structure.
5. backlight module as claimed in claim 1, it is characterised in that described elastic arm also includes a junction, and described connecting portion connects described supporting surface and described wall extension, and described connecting portion has at least one depressed part, to increase the elasticity of described elastic arm.
6. backlight module as claimed in claim 5, it is characterised in that described at least one depressed part is two, and being caved in opposite directions by described connecting portion two opposite side respectively is formed.
7. backlight module as claimed in claim 5, it is characterised in that all curved structure of each described depressed part.
8. backlight module as claimed in claim 1, it is characterised in that described blooming piece includes at least one diffusion sheet, and described supporting surface is held on described diffusion sheet.
9. backlight module as claimed in claim 1, it is characterised in that described end face is lower than the upper surface of described wall extension.
10. a liquid crystal indicator, including a backlight module and be located at the display floater on described backlight module；Described backlight module includes light guide plate, light source, blooming piece and glue frame；Described light source is located at described light guide plate side, and described blooming piece is located on described light guide plate, and described glue frame includes end to end multiple sidewall, and described light guide plate, described light source and described blooming piece are fixed in described glue frame；This glue frame wherein sidewall described near described light source side extends inwardly to form a wall extension, and this wall extension covers described light source and carries described display floater；Described wall extension extends inwardly to form an elastic arm；Described elastic arm includes an end face and a supporting surface relative with described end face；Elastic deformation is there is, so that described supporting surface is held on described light guide plate or described blooming piece during described elastic arm pressurized.
11. liquid crystal indicator as claimed in claim 10, it is characterised in that described supporting surface is globoidal structure or ramp structure.
12. liquid crystal indicator as claimed in claim 10, it is characterised in that described elastic arm also includes a junction, described connecting portion connects described supporting surface and described wall extension, and described connecting portion has at least one depressed part, to increase the elasticity of described elastic arm.
13. liquid crystal indicator as claimed in claim 10, it is characterised in that described at least one depressed part is two, and being caved in opposite directions by described connecting portion two opposite side respectively is formed.
14. liquid crystal indicator as claimed in claim 10, it is characterised in that described end face is lower than the upper surface of described wall extension.
15. liquid crystal indicator as claimed in claim 10, it is characterised in that when elastic deformation does not occur described elastic arm, the relatively described inclined attitude of light guide plate of described supporting surface.
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| CN201410711163.0A CN105715984B (en) | 2014-12-01 | 2014-12-01 | Backlight module and liquid crystal display device |
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| CN201410711163.0A CN105715984B (en) | 2014-12-01 | 2014-12-01 | Backlight module and liquid crystal display device |
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| CN105715984A true CN105715984A (en) | 2016-06-29 |
| CN105715984B CN105715984B (en) | 2018-03-23 |
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| CN110456568A (en) * | 2019-08-06 | 2019-11-15 | 深圳市利航电子有限公司 | Backlight removes bright border structure |
| CN113625387A (en) * | 2021-08-20 | 2021-11-09 | 业成科技（成都）有限公司 | Backlight module |
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| CN113625387B (en) * | 2021-08-20 | 2023-06-02 | 业成科技（成都）有限公司 | Backlight module |
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|---|---|
| CN105715984B (en) | 2018-03-23 |
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Effective date of registration: 20161201 Address after: Guangdong province Shenzhen city Baoan District town Longhua tenth Industrial Zone tabulaeformis East Ring Road No. 2 two Applicant after: Hongfujin Precise Industry (Shenzhen) Co., Ltd. Applicant after: Hon Hai Precision Industry Co., Ltd. Address before: Taiwan Hsinchu County Chinese jhubei City, Taiwan 1 yuan a Street No. 7 Building 1 Applicant before: YEXIN TECHNOLOGY CONSULATION CO., LTD. |
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