CN108181756B - Curved surface display device, backlight module and assembling method thereof - Google Patents
Curved surface display device, backlight module and assembling method thereof Download PDFInfo
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- CN108181756B CN108181756B CN201810233593.4A CN201810233593A CN108181756B CN 108181756 B CN108181756 B CN 108181756B CN 201810233593 A CN201810233593 A CN 201810233593A CN 108181756 B CN108181756 B CN 108181756B
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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
- G02F1/133382—Heating or cooling of liquid crystal cells other than for activation, e.g. circuits or arrangements for temperature control, stabilisation or uniform distribution over the cell
- G02F1/133385—Heating or cooling of liquid crystal cells other than for activation, e.g. circuits or arrangements for temperature control, stabilisation or uniform distribution over the cell with cooling means, e.g. fans
-
- 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
-
- 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
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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
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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
- G02F1/133628—Illuminating devices with cooling means
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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- General Physics & Mathematics (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Planar Illumination Modules (AREA)
Abstract
The invention provides a curved surface display device, a backlight module and an assembling method thereof, wherein the backlight module comprises a backlight source, a light guide component, an adhesive layer and a heat dissipation plate, the backlight source is arranged opposite to a light incoming surface of the light guide component, the heat dissipation plate comprises a bottom plate, the adhesive layer is arranged between the bottom plate and the light guide component, a plurality of through holes are formed in the bottom plate and used for accommodating a plurality of positioning blocks, and the length of each positioning block in the direction vertical to a light outgoing surface is greater than the sum of the length of the bottom plate in the direction vertical to the light outgoing surface and the length of the adhesive. According to the invention, the through holes are formed in the heat dissipation plate, the positioning blocks are formed in the through holes in an extrusion forming mode, the positioning blocks are higher than the glue layer, in the assembling process, the positioning blocks are used for supporting the light guide assembly, and after the light guide assembly is aligned with the backlight source, the light guide assembly is pressed and is attached to the glue layer, so that the assembling sequence of positioning first and attaching second is realized, and the yield and the assembling efficiency of products are improved.
Description
Technical Field
The invention relates to the technical field of curved surface display, in particular to a curved surface display device, a backlight module and an assembling method thereof.
Background
The curved-surface liquid crystal display has the characteristics of ultrathin thickness, light weight, flexibility, high design freedom degree and the like, and has wide market prospect in the fields of wearable, mobile phone communication, televisions, commercial advertisements and military application. The thickness requirement of all-in-one on the market at present is more and more thin, because the backplate in the traditional module can be omitted in the module design of laminating entirely, consequently, the module design of laminating entirely has embodied very big advantage in the aspect of thickness, but in the assembling process of the module of laminating entirely, need laminate light guide component and heating panel laminating entirely together, to the curved surface module, this equipment is hardly accomplished, bad problems such as deviation appear very easily in the assembling process, and rework is more difficult, greatly reduced the yield and the packaging efficiency of product.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides the curved surface display device, the backlight module and the assembling method thereof, which can realize the assembling sequence of positioning and attaching, and improve the yield and the assembling efficiency of products.
The specific technical scheme provided by the invention is as follows: the utility model provides a backlight module, backlight module includes backlight, leaded light subassembly, glue film and heating panel, the backlight with leaded light subassembly's income plain noodles sets up relatively, the heating panel includes the bottom plate, the glue film is located the bottom plate with between the leaded light subassembly, be provided with a plurality of through-holes on the bottom plate, a plurality of through-holes are used for acceping a plurality of locating pieces, the locating piece is in following the perpendicular to go out ascending length in plain noodles direction and the bottom plate is in following the perpendicular to go out the ascending length in plain noodles direction with the glue film is in following the perpendicular to go out the ascending length sum in plain noodles direction.
Further, be provided with a plurality of via holes on the glue film, a plurality of via holes with a plurality of through-hole one-to-one.
Further, the through holes are evenly distributed on the bottom plate.
Further, the cross-sectional shape of the positioning block is trapezoidal.
Furthermore, the heat dissipation plate further comprises a side plate, the side plate is opposite to the light incident surface of the light guide assembly, and the backlight source is arranged on one surface, facing the light guide assembly, of the side plate.
Further, the light guide assembly comprises a light guide plate and a reflector plate, and the reflector plate is attached to one surface, facing the glue layer, of the light guide plate.
The invention also provides a curved surface display device which comprises the backlight module.
The invention also provides an assembling method of the backlight module, which comprises the following steps:
providing a heat dissipation plate attached with a glue layer, wherein the heat dissipation plate comprises a bottom plate, and a plurality of through holes are formed in the bottom plate;
forming a plurality of positioning blocks in the through holes through an extrusion forming process, wherein the positioning blocks are higher than the adhesive layer;
installing a backlight source;
and after aligning the light guide assembly with the backlight source, pressing the light guide assembly to enable the light guide assembly to be attached to the adhesive layer, and enabling the positioning block to fall off from the through hole.
According to the backlight module and the assembling method thereof, the through holes are formed in the heat dissipation plate, the positioning blocks are formed in the through holes in an extrusion forming mode, the positioning blocks are higher than the glue layer, in the assembling process, the positioning blocks are used for supporting the light guide assembly, after the light guide assembly is aligned with the backlight source, the light guide assembly is pressed and is attached to the glue layer, therefore, the assembling sequence of positioning and attaching is achieved, deviation between the light guide assembly and the backlight source is avoided, and the yield and the assembling efficiency of products are improved.
Drawings
The technical solution and other advantages of the present invention will become apparent from the following detailed description of specific embodiments of the present invention, which is to be read in connection with the accompanying drawings.
FIG. 1 is a schematic structural diagram of a backlight module according to a first embodiment;
FIG. 2 is a schematic structural diagram of a curved display device according to a first embodiment;
FIGS. 3 to 5 are flow charts of a method for assembling a backlight module according to a first embodiment;
fig. 6 is a schematic structural diagram of a backlight module according to a second embodiment.
Detailed Description
Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the specific embodiments set forth herein. Rather, these embodiments are provided to explain the principles of the invention and its practical application to thereby enable others skilled in the art to understand the invention for various embodiments and with various modifications as are suited to the particular use contemplated. In the drawings, like reference numerals will be used to refer to like elements throughout.
Referring to fig. 1, the backlight module provided in this embodiment includes a backlight source 11, a light guide assembly 12, an adhesive layer 13 and a heat dissipation plate, wherein the backlight source 11 is disposed opposite to the light incident surface of the light guide assembly 12, the heat dissipation plate includes a bottom plate 14a, the adhesive layer 13 is disposed between the bottom plate 14a and the light guide assembly 12, the bottom plate 14a is provided with a plurality of through holes 140, the through holes 140 are used for accommodating a plurality of positioning blocks, and the length of the positioning blocks along the direction perpendicular to the light emergent surface is greater than the sum of the length of the bottom plate 14a along the direction perpendicular to the light emergent surface and the.
The backlight module in this embodiment is a side-in type backlight module, the side surface of the light guide assembly 12 is a light incident surface, the backlight source 11 is disposed on the side surface of the light guide assembly 12, the top surface of the light guide assembly 12 is a light emitting surface, and light emitted from the backlight source 11 enters the light guide assembly 12 from the light incident surface and is emitted from the top surface of the light guide assembly 12, i.e., the light emitting surface, after being reflected for multiple times in the light guide assembly 12.
The cross-sectional shape of locating piece is trapezoidal, and the shape of through-hole 140 is funnel-shaped, and wherein, the opening diameter of the one end that through-hole 140 kept away from glue film 13 is greater than the opening diameter of the one end that is close to glue film 13.
The light guide assembly 12 includes a light guide plate 12a and a reflective sheet 12b, and the reflective sheet 12b is attached to a surface of the light guide plate 12a facing the adhesive layer 13. The light incident surface refers to a side surface of the light guide plate 12a, and the top surface of the light guide plate 12a is a light emitting surface. The reflective sheet 12b serves to reflect light incident on the bottom of the light guide plate 12a into the light guide plate 12 a.
The heat dissipation plate further includes a side plate 14b, the side plate 14b is perpendicular to the bottom plate 14a, the side plate 14b is disposed opposite to the light incident surface of the light guide assembly 12, and the backlight 11 is disposed on one surface of the side plate 14b facing the light guide assembly 12.
The backlight source 11 includes a main board 11a and an LED light bar 11b, the main board 11a is fixed on the side board 14b, and the LED light bar 11b is disposed on the main board 11a and corresponds to the center of the light incident surface of the light guide plate 12a, so that light emitted from the LED light bar 11b uniformly enters from the light incident surface of the light guide plate 12 a.
In the first embodiment of this embodiment, the through holes 140 are disposed at the edge of the bottom plate 14a and around the adhesive layer 13, the through holes 140 located at two opposite sides of the adhesive layer 13 are symmetrical with respect to the adhesive layer 13, and the number of the through holes 140 corresponding to the long side of the adhesive layer 13 is greater than the number of the through holes 140 corresponding to the short side of the adhesive layer 13.
Referring to fig. 2, in the first embodiment, a curved surface display device is further provided, which includes a display panel 2, an outer frame 3 and the backlight module. The outer frame 3 includes a side frame 31 and a middle frame 32 bent and extended from the side frame 31, the side frame 31 is attached to the outer surface of the side plate 14b, the backlight module further includes an optical film set 16, the middle frame 32 is step-shaped and includes a first table surface 32a and a second table surface 32b, the first table surface 32a is higher than the second table surface 32b, the first table surface 32a is used for supporting the display panel 2, and the second table surface 32b is used for supporting the optical film set 16.
Referring to fig. 3 to 5, in a first embodiment, there is further provided an assembling method of the backlight module, the assembling method including the steps of:
s1, providing a heat dissipation plate attached with an adhesive layer 13, where the heat dissipation plate includes a bottom plate 14a, the bottom plate 14a is provided with a plurality of through holes 140, the through holes 140 are disposed at the edge of the bottom plate 14a and surround the adhesive layer 13, the through holes 140 located at two opposite sides of the adhesive layer 13 are symmetrical with respect to the adhesive layer 13, the number of the through holes 140 corresponding to the long side of the adhesive layer 13 is greater than the number of the through holes 140 corresponding to the short side of the adhesive layer 13, and the bottom plate 14a has a curved surface structure with a certain curvature;
s2, forming a plurality of positioning blocks 15 in the through holes 140 through an extrusion forming process, wherein the positioning blocks 15 are higher than the rubber layer 13, the positioning blocks 15 are made of rubber, and the shapes of the positioning blocks 15 correspond to the shapes of the through holes 140, namely the positioning blocks 15 are round tables;
s3, installing the backlight 11 on the side plate 14b facing the light guide plate 12a (as shown in fig. 3);
s4, aligning the light guide assembly 12 with the backlight 11 (as shown in fig. 4), pressing the light guide assembly 12 to make the light guide assembly 12 fit to the adhesive layer 13, and the positioning block 15 falls off from the through hole 140 (as shown in fig. 5).
In step S4, the LED light bar 11b and the light guide plate 12a are aligned, so that the light emitted from the LED light bar 11b is uniformly incident into the light guide plate 12 a. The light guide member 12 is bent downward by its own weight to form a curved structure having the same curvature as that of the bottom plate 14 a. When the light guide assembly 12 is pressed, the reflective sheet 12b is attached to the adhesive layer 13, and the positioning block 15 is made of rubber and shaped like a circular truncated cone, so that the positioning block 15 can easily fall off from the through hole 140 under the extrusion of the reflective sheet 12b, and the assembly between the light guide assembly 12 and the heat dissipation plate is completed.
Because locating piece 15 highly is higher than glue film 13, at the in-process of counterpointing, locating piece 15 can be fine support light guide component 12, light guide component 12 can not contact with glue film 13, laminate light guide component 12 and glue film 13 after the completion of counterpointing again to realize the equipment order of fixing a position earlier the back and laminating, avoid taking place the deviation between light guide component 12 and the backlight 11, promote the yield and the packaging efficiency of product.
In addition, the through holes 140 are disposed on the bottom plate 14a, so that stress generated during the bending process of the bottom plate 14a can be reduced, the bottom plate 14a can be bent more easily, and the reduction of product yield due to separation after assembly can be avoided.
Referring to fig. 6, in the second embodiment of this embodiment, a plurality of via holes 130 are further disposed on the adhesive layer 13, the via holes 130 correspond to the through holes 140 one by one, the via holes 130 communicate with the through holes 140, and the shape of the via holes 130 is consistent with the shape of the through holes 140. The through holes 140 are uniformly distributed on the bottom plate 14a, and the through holes 130 are uniformly distributed on the adhesive layer 13.
The structures of the display panel 2 and the outer frame 3 of the curved display device in the second embodiment are the same as those of the display panel 2 and the outer frame 3 of the curved display device in the first embodiment, and are not described again.
The assembling method of the backlight module in the second embodiment is the same as that of the backlight module in the first embodiment, and is not described herein again.
In the second embodiment, since the positioning blocks 15 are uniformly distributed on the bottom plate 14a, the stress on the light guide assembly 12 can be uniform in the attaching process, so that the light guide assembly 12 can be better attached.
The foregoing is directed to embodiments of the present application and it is noted that numerous modifications and adaptations may be made by those skilled in the art without departing from the principles of the present application and are intended to be within the scope of the present application.
Claims (8)
1. The utility model provides a backlight module, its characterized in that, includes backlight, leaded light subassembly, glue film and heating panel, the backlight with leaded light subassembly's income plain noodles sets up relatively, the heating panel includes the bottom plate, the glue film is located the bottom plate with between the leaded light subassembly, be provided with a plurality of through-holes on the bottom plate, a plurality of locating pieces are used for acceping a plurality of locating pieces, the locating piece is in the edge perpendicular to leaded light subassembly's length on the play plain noodles direction is greater than the bottom plate is in the edge perpendicular to leaded light subassembly's length on the play plain noodles direction with the glue film is in the edge perpendicular to leaded light subassembly's the ascending sum of length on the.
2. The backlight module according to claim 1, wherein the adhesive layer is provided with a plurality of via holes, and the via holes correspond to the through holes one by one.
3. The backlight module according to claim 2, wherein the plurality of through holes are uniformly distributed on the bottom plate.
4. The backlight module as claimed in claim 1, wherein the positioning block has a trapezoidal cross-sectional shape.
5. The backlight module according to claim 1, wherein the heat dissipation plate further comprises a side plate, the side plate is disposed opposite to the light incident surface of the light guide assembly, and the backlight source is disposed on a surface of the side plate facing the light guide assembly.
6. The backlight module according to claim 1, wherein the light guide assembly comprises a light guide plate and a reflective sheet, and the reflective sheet is attached to a surface of the light guide plate facing the adhesive layer.
7. A curved display device, comprising the backlight module according to any one of claims 1-6.
8. A method for assembling a backlight module is characterized by comprising the following steps:
providing a heat dissipation plate attached with a glue layer, wherein the heat dissipation plate comprises a bottom plate, and a plurality of through holes are formed in the bottom plate;
forming a plurality of positioning blocks in the through holes through an extrusion forming process, wherein the positioning blocks are higher than the adhesive layer;
installing a backlight source;
and after aligning the light guide assembly with the backlight source, pressing the light guide assembly to enable the light guide assembly to be attached to the adhesive layer, and enabling the positioning block to fall off from the through hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810233593.4A CN108181756B (en) | 2018-03-21 | 2018-03-21 | Curved surface display device, backlight module and assembling method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810233593.4A CN108181756B (en) | 2018-03-21 | 2018-03-21 | Curved surface display device, backlight module and assembling method thereof |
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| Publication Number | Publication Date |
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| CN108181756A CN108181756A (en) | 2018-06-19 |
| CN108181756B true CN108181756B (en) | 2020-08-28 |
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| CN201810233593.4A Active CN108181756B (en) | 2018-03-21 | 2018-03-21 | Curved surface display device, backlight module and assembling method thereof |
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| WO2024000334A1 (en) * | 2022-06-29 | 2024-01-04 | 京东方科技集团股份有限公司 | Curved optical plate and manufacturing method therefor, backlight module, and display device |
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