CN108563064B - Backlight module, assembling method thereof and display device - Google Patents
Backlight module, assembling method thereof and display device Download PDFInfo
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- CN108563064B CN108563064B CN201810012514.7A CN201810012514A CN108563064B CN 108563064 B CN108563064 B CN 108563064B CN 201810012514 A CN201810012514 A CN 201810012514A CN 108563064 B CN108563064 B CN 108563064B
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- 238000000034 method Methods 0.000 title claims abstract description 39
- 239000012788 optical film Substances 0.000 claims abstract description 73
- 239000000463 material Substances 0.000 claims abstract description 51
- 238000003825 pressing Methods 0.000 claims abstract description 16
- 239000002390 adhesive tape Substances 0.000 claims abstract description 15
- 238000010276 construction Methods 0.000 claims 1
- 230000008569 process Effects 0.000 description 11
- 238000009434 installation Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 230000009471 action Effects 0.000 description 5
- 238000009792 diffusion process Methods 0.000 description 5
- 239000011265 semifinished product Substances 0.000 description 5
- 239000004973 liquid crystal related substance Substances 0.000 description 3
- 239000010408 film Substances 0.000 description 2
- 230000004308 accommodation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 230000000873 masking effect Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133615—Edge-illuminating devices, i.e. illuminating from the side
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
- G02F1/133325—Assembling processes
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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Planar Illumination Modules (AREA)
- Liquid Crystal (AREA)
Abstract
The invention discloses a backlight module, an assembling method thereof and a display device, and belongs to the technical field of display. The method comprises the following steps: providing a back plate; the back plate is provided with a light guide plate and a frame body, the frame body is positioned on the side face of the light guide plate, the frame body comprises at least two positioning modules positioned between the light guide plate and a display panel bearing face of the frame body, each positioning module comprises an accommodating cavity and a positioning column which are arranged in a stacked mode, and one end, far away from the accommodating cavity, of each positioning column protrudes out of the bearing face of the display panel; arranging an optical film material on the light emergent side of the light guide plate; applying pressure to the positioning column by using a pressure head provided with a shading adhesive tape so as to press the positioning column into the accommodating cavity and attach the shading adhesive tape to the edge area of the optical film material and the bearing surface of the display panel; the positioning column pressed into the accommodating cavity does not protrude out of the bearing surface of the display panel. The invention solves the problem of low reliability of the display device caused by light leakage at the edge of the backlight module in the related art. The invention is used for assembling the backlight module.
Description
Technical Field
The invention relates to the technical field of display, in particular to a backlight module, an assembling method of the backlight module and a display device.
Background
A Liquid Crystal Display (LCD) includes a Liquid Crystal Display panel and a backlight module (Back Light) disposed on a Back surface of the Liquid Crystal Display panel, and the backlight module is generally divided into a direct type backlight module and a side type backlight module.
In the related art, in the assembly process of the side-in type backlight module, the assembly of the semi-finished product shown in fig. 1 is generally completed first, and the semi-finished product of the backlight module includes a back plate 11, a rubber frame 12, a light guide plate 13, a reflective tape 14 and a reflective sheet 15; and then putting the semi-finished product into automatic equipment to finish the assembly of the optical film material and the attachment of the shading adhesive tape, wherein the optical film material comprises a diffusion sheet and a brightness enhancement sheet which are sequentially arranged along the direction far away from the light guide plate. Due to the requirement of the thickness of the backlight module, after the optical film material is assembled by the automation equipment, the vertical distance between the upper surface of the brightness enhancement film and the bearing surface M of the display panel on the rubber frame 12 is very small, generally between 0.05 and 0.1 mm.
However, due to the warpage of the optical film material itself and the centrifugal force applied to the optical film material by the rotation of the automation device during the assembly process, the optical film material may climb (i.e. over the display panel carrying surface of the plastic frame), after the optical film material climbs, the automation device may not fix the optical film material when attaching the light-shielding tape, a gap may occur between the optical film material and the light-shielding tape, which causes the light leakage phenomenon at the edge of the backlight module, thereby causing the light leakage phenomenon at the edge of the display device at a large viewing angle, and thus the reliability of the display device is low.
Disclosure of Invention
The embodiment of the invention provides a backlight module, an assembling method thereof and a display device, which can solve the problem of low reliability of the display device caused by light leakage at the edge of the backlight module in the related art. The technical scheme is as follows:
in a first aspect, a method for assembling a backlight module is provided, the method comprising:
providing a back plate;
the back plate is provided with a light guide plate and a frame body, the frame body is positioned on the side face of the light guide plate, the frame body comprises at least two positioning modules positioned between the light guide plate and the bearing face of the display panel of the frame body, each positioning module comprises an accommodating cavity and a positioning column which are arranged in a stacked mode, and one end, far away from the accommodating cavity, of each positioning column protrudes out of the bearing face of the display panel;
arranging an optical film material on the light emergent side of the light guide plate;
applying pressure to the positioning column by using a pressure head provided with a shading adhesive tape so as to press the positioning column into the accommodating cavity and attach the shading adhesive tape to the edge area of the optical film material and the bearing surface of the display panel;
the positioning column pressed into the accommodating cavity does not protrude out of the bearing surface of the display panel.
Optionally, the accommodating cavity and the positioning column are of an integral structure,
the adoption is provided with the pressure head of shading sticky tape right the reference column exerts pressure, in order with the reference column is impressed hold the chamber, include:
and applying pressure to the positioning column by adopting the pressure head, so that the joint of the accommodating cavity and the positioning column is broken, and the positioning column is pressed into the accommodating cavity.
Optionally, the thickness range of the connecting part is 0.15-0.2 mm;
the height range of the positioning column protruding out of the bearing surface of the display panel is 0.2-0.3 mm;
the depth range of the accommodating cavity is 0.4-0.7 mm.
Optionally, the difference range between the size of the bottom surface of the accommodating cavity and the size of the bottom surface of the positioning column is 0.2-0.4 mm.
Optionally, an opening is formed in one side, facing the positioning column, of the accommodating cavity, and the positioning column is clamped at the opening;
the adoption is provided with the pressure head of shading sticky tape right the reference column exerts pressure, in order with the reference column is impressed hold the chamber, include:
and applying pressure to the positioning column by using the pressure head so as to press the positioning column into the accommodating cavity from the opening.
Optionally, the accommodating cavity is a cylindrical cavity, and the positioning column is of a cylindrical structure;
or, the accommodating cavity is a cubic cylinder-shaped cavity, and the positioning column is of a cubic cylinder structure.
Optionally, the optical film comprises a positioning lug,
the positioning modules and the positioning lugs are arranged in a one-to-one correspondence mode.
Optionally, the frame body is a rectangular frame body, the at least two positioning modules include four positioning modules,
the four positioning modules are respectively arranged at four right-angle positions of the frame body.
In a second aspect, a backlight module is provided, which includes:
the backlight module comprises a back plate, a frame body, a light guide plate, an optical film material and a shading adhesive tape, wherein the frame body and the light guide plate are arranged on the back plate, the frame body is arranged on the side surface of the light guide plate, the optical film material is arranged on the light emergent side of the light guide plate, and the shading adhesive tape is attached to the edge area of the optical film material and the bearing surface of a display panel of the frame body;
the frame body comprises at least two positioning modules, each positioning module comprises a containing cavity and a positioning column, the positioning modules are located between the light guide plate and the bearing surface of the display panel, each positioning module is located on the containing cavity, one end of each positioning module protrudes out of the bearing surface of the display panel, the positioning columns exert pressure, and the positioning columns are pressed into structures formed by the containing cavities.
In a third aspect, there is provided a display device including: the backlight module of the second aspect.
The technical scheme provided by the embodiment of the invention has the following beneficial effects:
the backlight module, the assembling method thereof and the display device provided by the embodiment of the invention have the advantages that the frame body comprises at least two positioning modules which are positioned on the light guide plate and the display panel bearing surface of the frame body, when the optical film is arranged, one end of the positioning column in the positioning module protrudes out of the bearing surface of the display panel of the frame body, even if the edge of the optical film material is warped or the automatic equipment rotates in the assembling process to enable the optical film material to be under the action of centrifugal force, the optical film material cannot cross the bearing surface of the display panel, namely, the optical film material can not climb, when the shading tape is attached, the pressure head applies pressure to the positioning column, so as to press the positioning column into the accommodating cavity, the positioning column after being pressed into the accommodating cavity does not protrude out of the bearing surface of the display panel, the positioning column can not influence the subsequent installation of the display panel, and the reliability of the backlight module is ensured, and the reliability of the display device is improved.
Drawings
Fig. 1 is a schematic view of a partial structure of a backlight module provided in the related art;
fig. 2 is a schematic structural diagram of a backlight module provided in the related art;
FIG. 3 is a flowchart illustrating a method for assembling a backlight module according to an embodiment of the present invention;
FIG. 4 is a flow chart of an assembly process of the backlight module according to the embodiment of the present invention;
fig. 5A is a schematic structural diagram of a positioning module according to an embodiment of the present invention;
fig. 5B is a schematic structural diagram of another positioning module according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a frame according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of a backlight module according to an embodiment of the invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
The backlight module can be divided into a direct type backlight module and a side type backlight module, fig. 2 is a schematic structural view of a side type backlight module in the related art, and as shown in fig. 2, the side type backlight module includes a back plate 11, a rubber frame 12, a light guide plate 13, a reflective tape 14, a reflective sheet 15, an optical film material 16 and a light-shielding tape 17. In the assembling process of the backlight module, the assembly of the semi-finished product shown in fig. 1 is generally completed first, that is, the assembly of the back plate 11, the rubber frame 12, the light guide plate 13, the reflective tape 14 and the reflective sheet 15 is completed first; and then putting the semi-finished product into an automatic device to complete the assembly of the optical film material 16 and the attachment of the shading tape 17, wherein the optical film material 16 comprises a diffusion sheet 161 and a brightness enhancement sheet 162 which are sequentially arranged along the direction far away from the light guide plate. Due to the requirement of the thickness of the backlight module, after the automatic device completes the assembly of the optical film 16, as shown in fig. 2, the vertical distance between the upper surface of the brightness enhancement film and the bearing surface of the display panel on the rubber frame 12 is very small, generally between 0.05 mm and 0.1 mm. Due to the warping problem of the optical film material and the centrifugal force applied to the optical film material by the rotation action of the automatic equipment in the assembling process, the optical film material may climb (i.e. cross over the bearing surface of the display panel of the rubber frame), after the optical film material climbs, the automatic equipment cannot fix the optical film material when the shading tape is attached, a gap may occur between the optical film material and the shading tape, so that the light leakage phenomenon occurs at the edge of the backlight module, and the edge light leakage phenomenon occurs when the display device is under a large viewing angle, so that the reliability of the display device is low; in addition, after the optical film material climbs a slope, when the display panel is installed, structural interference can occur at the position where the optical film material climbs the slope, so that the corner area of the display panel is jacked up, the display effect of the display panel is influenced, meanwhile, the thickness of the display device can exceed the specification, and structural interference occurs when the whole machine is assembled.
An embodiment of the present invention provides an assembly method of a backlight module, as shown in fig. 3, the method includes:
It should be noted that, an orthographic projection of the positioning column structure on the accommodating cavity is located in an area where the accommodating cavity is located.
And 304, applying pressure to the positioning column by using a pressure head provided with a shading adhesive tape so as to press the positioning column into the accommodating cavity, and attaching the shading adhesive tape to the edge area of the optical film material and the bearing surface of the display panel.
The positioning column pressed into the accommodating cavity does not protrude out of the bearing surface of the display panel.
In the embodiment of the present invention, the setting of the optical film material in the step 303 and the attaching of the light-shielding tape in the step 304 may be performed by an automated apparatus.
In summary, in the assembling method of the backlight module provided by the embodiment of the invention, the frame body includes at least two positioning modules located on the light guide plate and the display panel carrying surface of the frame body, when the optical film is arranged, one end of the positioning column in the positioning module protrudes out of the bearing surface of the display panel of the frame body, even if the edge of the optical film material is warped or the automatic equipment rotates in the assembling process to enable the optical film material to be under the action of centrifugal force, the optical film material cannot cross the bearing surface of the display panel, namely, the optical film material can not climb, when the shading tape is attached, the pressure head applies pressure to the positioning column, so as to press the positioning column into the accommodating cavity, the positioning column after being pressed into the accommodating cavity does not protrude out of the bearing surface of the display panel, the positioning column can not influence the subsequent installation of the display panel, and the reliability of the backlight module is ensured, and the reliability of the display device is improved.
Optionally, fig. 4 is a flowchart of an assembly process of the backlight module according to the embodiment of the present invention:
s1, providing a back plate 401.
Alternatively, the back plate may be a metal back plate.
S2, disposing the light guide plate 402 and the frame 403 on the back plate 401, where the frame 403 is located on a side surface of the light guide plate 402, the frame 403 includes at least two positioning modules located between the light guide plate 402 and the display panel carrying surface M of the frame 403, each positioning module includes an accommodating cavity 403a and a positioning column 403b, and one end of the positioning column 403b, which is far away from the accommodating cavity 403a, protrudes out of the display panel carrying surface M.
Optionally, the frame body may be a rubber frame, and the frame body may be manufactured by an injection molding process.
S3, the optical film 404 is disposed on the light exit side of the light guide plate 402.
Alternatively, the optical film 404 may include a diffusion sheet 4041 and a brightness enhancement sheet 4042 which are stacked in a direction away from the light guide plate 402. The diffusion sheet can be used for homogenizing the light emitted from the light-emitting surface of the light guide plate, and the brightness enhancement sheet can be used for improving the light brightness of a certain area.
S4, pressing the positioning post 403b with the pressing head a provided with the light shielding tape 405 to press the positioning post 403b into the accommodation cavity 403 a.
S5, attaching the masking tape 405 to the edge region of the optical film 404 and the display panel carrying surface.
In practical application, after the optical film is arranged, a pressure head may be used to apply pressure to the positioning column to press the positioning column into the accommodating cavity, and then the light-shielding tape is attached to the edge area of the optical film and the bearing surface of the display panel by an attaching tool.
In the embodiment of the invention, the positioning module can be an integrated structure or an assembly structure.
When the positioning module is an integrated structure, as shown in fig. 5A, the accommodating cavity 403a and the positioning column 403b are an integrated structure, and the method of applying pressure to the positioning column by using the pressing head provided with the light-shielding adhesive tape to press the positioning column into the accommodating cavity may include:
adopt the pressure head to exert pressure to the reference column for hold the chamber and split with the reference column junction, in order to press the reference column and hold the chamber.
It should be noted that the depth of the accommodating cavity is not less than the sum of the height of the positioning column protruding out of the bearing surface of the display panel and the thickness of the joint, so that after the positioning column is pressed into the accommodating cavity, the positioning column does not protrude out of the bearing surface of the display panel, and the attachment of the shading tape and the installation of the subsequent display panel are prevented from being affected.
Optionally, the thickness range of the joint is 0.15-0.2 mm; the height range of the positioning column protruding out of the bearing surface of the display panel is 0.2-0.3 mm; the depth range of the accommodating cavity is 0.4-0.7 mm, and the difference range between the depth of the optional accommodating cavity and the height of the positioning column protruding out of the bearing surface of the display panel is 0.2-0.4 mm.
As shown in fig. 5A, a difference between a bottom dimension L1 of the accommodating cavity 403a and a bottom dimension L2 of the positioning post 403b is in a range of 0.2-0.4 mm, the bottom of the accommodating cavity is a cross section in the AA' direction, and the bottom dimension of the accommodating cavity is larger than that of the positioning post, so as to ensure that the positioning post can be pressed into the accommodating cavity after the joint of the accommodating cavity and the positioning post is broken.
When the positioning module is an assembly structure, as shown in fig. 5B, an opening is formed in one side of the accommodating cavity 403a facing the positioning column 403B, and the positioning column 403B is clamped at the opening; the method for applying pressure to the positioning column by adopting the pressure head provided with the shading adhesive tape so as to press the positioning column into the accommodating cavity can comprise the following steps:
and applying pressure to the positioning column by using a pressure head so as to press the positioning column into the accommodating cavity from the opening.
It should be noted that the depth of the accommodating cavity is not less than the height of the positioning column protruding out of the bearing surface of the display panel, so that after the positioning column is pressed into the accommodating cavity, the positioning column does not protrude out of the bearing surface of the display panel, and the attachment of the shading tape and the installation of the subsequent display panel are prevented from being affected.
In the embodiment of the invention, the accommodating cavity and the positioning column have the same shape, so that the accommodating cavity is better matched with the positioning column, optionally, the accommodating cavity is a cylindrical cavity, and the positioning column is of a cylindrical structure; or the accommodating cavity is a cubic cylinder-shaped cavity, and the positioning column is of a cubic cylinder structure.
Optionally, the optical film includes positioning lugs, and the positioning modules may be disposed in one-to-one correspondence with the positioning lugs.
Alternatively, as shown in fig. 6, when the frame 403 is a rectangular frame, the at least two positioning modules may include four positioning modules X, and the four positioning modules X are respectively disposed at four right-angle positions of the frame.
It should be noted that, the sequence of the steps of the assembling method of the backlight module provided in the embodiment of the present invention may be appropriately adjusted, and the steps may be increased or decreased according to the circumstances, and any method that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention shall be included in the protection scope of the present invention, and therefore, no further description is given.
In summary, in the assembling method of the backlight module provided by the embodiment of the invention, the frame body includes at least two positioning modules located on the light guide plate and the display panel carrying surface of the frame body, when the optical film is arranged, one end of the positioning column in the positioning module protrudes out of the bearing surface of the display panel of the frame body, even if the edge of the optical film material is warped or the automatic equipment rotates in the assembling process to enable the optical film material to be under the action of centrifugal force, the optical film material cannot cross the bearing surface of the display panel, namely, the optical film material can not climb, when the shading tape is attached, the pressure head applies pressure to the positioning column, so as to press the positioning column into the accommodating cavity, the positioning column after being pressed into the accommodating cavity does not protrude out of the bearing surface of the display panel, the positioning column can not influence the subsequent installation of the display panel, and the reliability of the backlight module is ensured, and the reliability of the display device is improved.
Fig. 7 is a schematic structural diagram of a backlight module according to an embodiment of the present invention, and as shown in fig. 7, the backlight module may include:
the backlight module comprises a back plate 401, a frame body 403, a light guide plate 402, an optical film 404 and a light shielding tape 405, wherein the frame body 403 and the light guide plate 402 are arranged on the back plate 401, the frame body 403 is arranged on the side surface of the light guide plate 402, the optical film 404 is arranged on the light emergent side of the light guide plate 402, and the light shielding tape 405 is adhered to the edge area of the optical film 404 and the display panel bearing surface of the frame body 403.
The frame 403 includes at least two positioning modules, each positioning module includes an accommodating cavity and a positioning column, and each positioning module applies pressure to the positioning column, which is located on the accommodating cavity and has one end protruding out of the bearing surface of the display panel, so that the positioning column is pressed into the accommodating cavity to form a structure.
Alternatively, as shown in fig. 7, the optical film 404 may include a diffusion sheet 4041 and a brightness enhancement sheet 4042 which are stacked in a direction away from the light guide plate 402.
Further, as shown in fig. 7, the backlight module further includes a reflective sheet 406, the reflective sheet 406 is disposed between the light guide plate 402 and the back plate 401, and the reflective sheet can be used to reflect the light escaping from the light guide plate into the light guide plate, so as to improve the light utilization efficiency of the backlight module.
Optionally, the backlight module provided in the embodiment of the present invention is a side-in type backlight module, and the Light bar used in the backlight module may be a Light Emitting Diode (LED) or a Cold Cathode Fluorescent Lamp (CCFL), which is not limited in the embodiment of the present invention.
In summary, in the backlight module provided by the embodiment of the invention, the frame body includes at least two positioning modules located on the light guide plate and the display panel carrying surface of the frame body, when the optical film is arranged, one end of the positioning column in the positioning module protrudes out of the bearing surface of the display panel of the frame body, even if the edge of the optical film material is warped or the automatic equipment rotates in the assembling process to enable the optical film material to be under the action of centrifugal force, the optical film material cannot cross the bearing surface of the display panel, namely, the optical film material can not climb, when the shading tape is attached, the pressure head applies pressure to the positioning column, so as to press the positioning column into the accommodating cavity, the positioning column after being pressed into the accommodating cavity does not protrude out of the bearing surface of the display panel, the positioning column can not influence the subsequent installation of the display panel, and the reliability of the backlight module is ensured, and the reliability of the display device is improved.
An embodiment of the present invention provides a display device, which may include: such as the backlight module shown in fig. 7.
Optionally, the display device provided in the embodiment of the present invention may be any product or component having a display function, such as a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, and a navigator.
In summary, the display device provided in the embodiments of the invention includes a frame body in a backlight module, which includes at least two positioning modules located on the light guide plate and the display panel carrying surface of the frame body, when an optical film is disposed, because one end of a positioning column in the positioning modules protrudes out of the display panel carrying surface of the frame body, even if the edge of the optical film is warped, or an automatic device rotates during an assembly process to make the optical film subject to a centrifugal force, the optical film cannot cross over the display panel carrying surface, i.e. the optical film does not climb, when a light-shielding tape is attached, a pressure is applied to the positioning column by a pressure head to press the positioning column into an accommodating cavity, the positioning column pressed into the accommodating cavity does not protrude out of the display panel carrying surface, i.e. the positioning column does not affect the subsequent installation of the display panel, and the reliability of the backlight module is, the reliability of the display device is improved.
The invention is not to be considered as limited to the particular embodiments shown and described, but is to be understood that various modifications, equivalents, improvements and the like can be made without departing from the spirit and scope of the invention.
Claims (10)
1. A method for assembling a backlight module, the method comprising:
providing a back plate;
the back plate is provided with a light guide plate and a frame body, the frame body is positioned on the side face of the light guide plate, the frame body comprises at least two positioning modules positioned between the light guide plate and a display panel bearing face of the frame body, each positioning module comprises an accommodating cavity and a positioning column which are arranged in a stacked mode, one end, far away from the accommodating cavity, of the positioning column protrudes out of the display panel bearing face, the accommodating cavity and the positioning column are of an integrated structure, or one side, facing the positioning column, of the accommodating cavity is provided with an opening, and the positioning column is clamped at the opening;
arranging an optical film material on the light emergent side of the light guide plate;
applying pressure to the positioning column by using a pressure head provided with a shading adhesive tape so as to press the positioning column into the accommodating cavity and attach the shading adhesive tape to the edge area of the optical film material and the bearing surface of the display panel;
the positioning column pressed into the accommodating cavity does not protrude out of the bearing surface of the display panel.
2. The method of claim 1, wherein when the receiving cavity and the positioning post are of a unitary construction,
the adoption is provided with the pressure head of shading sticky tape right the reference column exerts pressure, in order with the reference column is impressed hold the chamber, include:
and applying pressure to the positioning column by adopting the pressure head, so that the joint of the accommodating cavity and the positioning column is broken, and the positioning column is pressed into the accommodating cavity.
3. The method of claim 2,
the thickness range of the connecting part is 0.15-0.2 mm;
the height range of the positioning column protruding out of the bearing surface of the display panel is 0.2-0.3 mm;
the depth range of the accommodating cavity is 0.4-0.7 mm.
4. The method of claim 2,
the difference range of the bottom surface size of the accommodating cavity and the bottom surface size of the positioning column is 0.2-0.4 mm.
5. The method as claimed in claim 1, wherein when the accommodating chamber is provided with an opening on a side facing the positioning column, the positioning column is clamped at the opening, and the pressing head provided with the light shielding tape is used for applying pressure to the positioning column so as to press the positioning column into the accommodating chamber, the method comprises:
and applying pressure to the positioning column by using the pressure head so as to press the positioning column into the accommodating cavity from the opening.
6. The method of claim 1,
the accommodating cavity is a cylindrical cavity, and the positioning column is of a cylindrical structure;
or, the accommodating cavity is a cubic cylinder-shaped cavity, and the positioning column is of a cubic cylinder structure.
7. The method of claim 1, wherein the optical film includes a positioning lug,
the positioning modules and the positioning lugs are arranged in a one-to-one correspondence mode.
8. The method of claim 1, wherein the frame is a rectangular frame, the at least two positioning modules comprise four positioning modules,
the four positioning modules are respectively arranged at four right-angle positions of the frame body.
9. A backlight module is characterized in that the backlight module comprises:
the backlight module comprises a back plate, a frame body, a light guide plate, an optical film material and a shading adhesive tape, wherein the frame body and the light guide plate are arranged on the back plate, the frame body is arranged on the side surface of the light guide plate, the optical film material is arranged on the light emergent side of the light guide plate, and the shading adhesive tape is attached to the edge area of the optical film material and the bearing surface of a display panel of the frame body;
wherein, the framework includes that at least two are located the light guide plate with location module between the display panel loading end, every location module is including holding chamber and reference column, location module through to with hold the integrative setting in chamber and one end protrusion in the display panel loading end the reference column exerts pressure, makes the reference column impresses hold the structure that the chamber formed, perhaps, location module is for putting through to the card hold the chamber the opening part and one end protrusion in the display panel loading end the reference column exerts pressure, makes the reference column impresses hold the structure that the chamber formed.
10. A display device, characterized in that the display device comprises: a backlight module as claimed in claim 9.
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| CN201810012514.7A CN108563064B (en) | 2018-01-05 | 2018-01-05 | Backlight module, assembling method thereof and display device |
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| CN201810012514.7A CN108563064B (en) | 2018-01-05 | 2018-01-05 | Backlight module, assembling method thereof and display device |
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| CN108563064B true CN108563064B (en) | 2021-04-13 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110264884B (en) * | 2019-06-28 | 2021-09-21 | 厦门天马微电子有限公司 | Backlight module and display device |
| CN112305799B (en) * | 2019-07-31 | 2025-03-07 | 京东方科技集团股份有限公司 | Display device and method of manufacturing the same |
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| CN108563064A (en) | 2018-09-21 |
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