CN109521516B - Backlight module and manufacturing method thereof - Google Patents
Backlight module and manufacturing method thereof Download PDFInfo
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- CN109521516B CN109521516B CN201910065355.1A CN201910065355A CN109521516B CN 109521516 B CN109521516 B CN 109521516B CN 201910065355 A CN201910065355 A CN 201910065355A CN 109521516 B CN109521516 B CN 109521516B
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- 239000002096 quantum dot Substances 0.000 claims abstract description 53
- 239000012790 adhesive layer Substances 0.000 claims abstract description 44
- 239000010410 layer Substances 0.000 claims abstract description 44
- 230000004888 barrier function Effects 0.000 claims abstract description 24
- 239000000565 sealant Substances 0.000 claims description 14
- 230000002093 peripheral effect Effects 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 9
- 238000007639 printing Methods 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims description 4
- 230000008569 process Effects 0.000 claims description 3
- 239000010408 film Substances 0.000 description 18
- 239000004973 liquid crystal related substance Substances 0.000 description 11
- 239000000463 material Substances 0.000 description 9
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 8
- 229910052782 aluminium Inorganic materials 0.000 description 8
- 238000001125 extrusion Methods 0.000 description 8
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 4
- 239000012788 optical film Substances 0.000 description 4
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 4
- 239000004926 polymethyl methacrylate Substances 0.000 description 4
- 239000000758 substrate Substances 0.000 description 4
- 239000003292 glue Substances 0.000 description 3
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 description 2
- 229920000297 Rayon Polymers 0.000 description 2
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Classifications
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0033—Means for improving the coupling-out of light from the light guide
- G02B6/0035—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
- G02B6/004—Scattering dots or dot-like elements, e.g. microbeads, scattering particles, nanoparticles
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0065—Manufacturing aspects; Material aspects
-
- 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
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133614—Illuminating devices using photoluminescence, e.g. phosphors illuminated by UV or blue light
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Planar Illumination Modules (AREA)
Abstract
The invention provides a backlight module and a manufacturing method thereof. The backlight module comprises a light guide plate, a backlight source, a quantum dot layer, an adhesive layer and a barrier film; the top surface of the light guide plate is provided with a plurality of raised mesh points which are arranged at intervals, and the backlight source is arranged on one side of the light guide plate; the adhesive layer is arranged on the top surface of the light guide plate and is in contact with the raised mesh points, and gaps are formed between the adhesive layer and the light guide plate in areas corresponding to the adjacent raised mesh points; the quantum dot layer is arranged on the adhesive layer, the barrier film is arranged on the quantum dot layer, and a plurality of raised mesh points are arranged on the top surface of the light guide plate, so that the light-emitting uniformity of the backlight module can be improved, and the color gamut of the backlight module is improved.
Description
Technical Field
The invention relates to the technical field of display, in particular to a backlight module and a manufacturing method thereof.
Background
Thin Film Transistor-Liquid Crystal displays (TFT-LCDs) have many advantages such as Thin body, power saving, no radiation, and the like, and are widely used. Such as: liquid crystal televisions, mobile phones, Personal Digital Assistants (PDAs), digital cameras, computer screens, notebook computer screens, or the like, are dominant in the field of flat panel displays. Most of the liquid crystal displays in the existing market are backlight liquid crystal displays, which include a liquid crystal panel and a backlight Module (Ba ckligt ht Module). The liquid crystal panel operates on the principle that a driving voltage is applied to a Thin film transistor Array Substrate (TFT Array Substrate) and a Color Filter Substrate (CF) to control the rotation direction of liquid crystal molecules between the two substrates, so as to refract light of the backlight module to generate a picture.
Since the lcd panel does not emit light, the backlight module is one of the key components of the lcd because the backlight module needs to provide a light source to normally display images. The backlight module is divided into a side-in type backlight module and a direct type backlight module according to different incident positions of the light source. In the direct type backlight module, a Light source such as a Cathode Fluorescent Lamp (CCFL) or a Light Emitting Diode (LED) is disposed behind a liquid crystal panel to directly form a surface Light source to provide to the liquid crystal panel. The side-in backlight module is configured to use an LED Light bar (Light bar) disposed at the side rear of the liquid crystal panel as a backlight source.
At present, the color gamut level of TFT liquid crystal display devices is generally about 72%, and Quantum Dot (Quantum Dot) backlight module technology is developed to further improve the color gamut level. Quantum dot luminescent materials obey quantum size effects, the properties of which vary with the size of the quantum dots. When stimulated by light or electricity, the quantum dots emit colored light, the color of the light is related to the properties of the light, and therefore the light emitted by the quantum dots can be controlled by changing the size of the light. The quantum dot luminescent material has the advantages of concentrated luminescent spectrum, high color purity and the like. The quantum dot light-emitting material is used in the technical field of display, so that the color gamut of the traditional display can be greatly improved, and the color reduction capability of the display is enhanced. The quantum dot backlight module utilizes the characteristic of quantum dots, and utilizes the irradiation of the LED backlight to irradiate the quantum dot layer to excite color lights with different colors, such that the color gamut of the display can be greatly improved, as shown in fig. 1, but the refractive index of the light guide plate 100 of the side-in type backlight module is greater than 1.49, so the light entering the light guide plate 100 can be totally internally reflected, and can be extracted only by arranging a plurality of dots 200 on the lower surface of the light guide plate 100, but when the quantum dot layer 300 is directly coated on the upper surface of the light guide plate 100, the light entering the light guide plate 100 from the backlight 400 can also enter the quantum dot layer 300 even though not scattered by the dots 200, and the light can excite the quantum dot layer 300, so that the quantum dot layer 300 emits light, and the dots 200 on the lower surface of the quantum dot light guide plate 100 cannot play a role of light extraction, and a large amount of light can be extracted from the side, the problem of taste seriously appears in the bright band of income light side, though prior art still provides through changing the light guide plate shape (for example form the chamfer in the upper and lower both sides of going into the light face) or directly sets up a low refracting index glue film at light guide plate and quantum dot layer, solves the technical scheme of income light side bright band, nevertheless changes the technical scheme technology of light guide plate shape very complicated, and the cost is higher, and low refracting index glue is expensive again and the supply chain is few, and then leads to this technical scheme's practicality to be lower.
Disclosure of Invention
The invention aims to provide a backlight module which can improve the light-emitting uniformity of the backlight module and improve the color gamut of the backlight module.
The invention also aims to provide a manufacturing method of the backlight module, which can improve the light-emitting uniformity of the backlight module and improve the color gamut of the backlight module.
In order to achieve the above object, the present invention provides a backlight module, which includes a light guide plate, a backlight source, a quantum dot layer, an adhesive layer and a barrier film;
the top surface of the light guide plate is provided with a plurality of raised mesh points which are arranged at intervals, and the backlight source is arranged on one side of the light guide plate;
the adhesive layer is arranged on the top surface of the light guide plate and is in contact with the raised mesh points, and gaps are formed between the adhesive layer and the light guide plate in areas corresponding to the adjacent raised mesh points; the quantum dot layer is arranged on the adhesive layer, and the barrier film is arranged on the quantum dot layer.
The convex dots are in a prism structure; the plurality of raised dots are uniformly arranged.
The light guide plate is cuboid.
The light emitted by the backlight source is blue light, and the quantum dot layer is used for converting the blue light into white light.
The backlight module further comprises a sealing rubber frame arranged at the peripheral edge of the top surface of the light guide plate, and the peripheral edge of the adhesive layer is in contact with the sealing rubber frame.
The invention also provides a manufacturing method of the backlight module, which comprises the following steps:
step S1, providing a light guide plate, and forming a plurality of raised dots arranged at intervals on the top surface of the light guide plate;
step S2, providing a barrier film, forming a quantum dot layer on the barrier film;
step S3, arranging an adhesive layer on the surface of the quantum dot layer far away from the barrier film;
step S4, adhering the adhesive layer to the top surface of the light guide plate, wherein the adhesive layer is in contact with the raised dots, and gaps are formed between the adhesive layer and the light guide plate in areas corresponding to the adjacent raised dots;
and step S5, arranging a backlight source on one side of the light guide plate.
The convex dots are in a prism structure; the plurality of raised dots are uniformly arranged; the light guide plate is cuboid.
The light emitted by the backlight source is blue light, and the quantum dot layer is used for converting the blue light into white light.
The step 3 further comprises: and a sealant frame at the peripheral edge of the top surface of the light guide plate, wherein the step S4 further includes attaching the peripheral edge of the adhesive layer to the sealant frame.
Step S1 is to form a plurality of raised dots arranged at intervals on the top surface of the light guide plate by dot printing, transfer printing or yellow light process.
The invention has the beneficial effects that: the invention provides a backlight module, which comprises a light guide plate, a backlight source, a quantum dot layer, an adhesive layer and a barrier film, wherein the quantum dot layer is arranged on the light guide plate; the top surface of the light guide plate is provided with a plurality of raised mesh points which are arranged at intervals, and the backlight source is arranged on one side of the light guide plate; the adhesive layer is arranged on the top surface of the light guide plate and is in contact with the raised mesh points, and gaps are formed between the adhesive layer and the light guide plate in areas corresponding to the adjacent raised mesh points; the quantum dot layer is arranged on the adhesive layer, the barrier film is arranged on the quantum dot layer, and a plurality of raised mesh points are arranged on the top surface of the light guide plate, so that the light-emitting uniformity of the backlight module can be improved, and the color gamut of the backlight module is improved. The invention also provides a manufacturing method of the backlight module, which can improve the light-emitting uniformity of the backlight module and improve the color gamut of the backlight module.
Drawings
For a better understanding of the nature and technical aspects of the present invention, reference should be made to the following detailed description of the invention, taken in conjunction with the accompanying drawings, which are provided for purposes of illustration and description and are not intended to limit the invention.
In the drawings, there is shown in the drawings,
FIG. 1 is a diagram of a conventional backlight module;
FIG. 2 is a structural diagram of a backlight module according to the present invention;
FIG. 3 is a flowchart illustrating a method for fabricating a backlight module according to the present invention.
Detailed Description
To further illustrate the technical means and effects of the present invention, the following detailed description is given with reference to the preferred embodiments of the present invention and the accompanying drawings.
Referring to fig. 2, the present invention provides a backlight module, which includes a light guide plate 1, a backlight source 2, a quantum dot layer 3, an adhesive layer 4 and a barrier film 5;
the top surface of the light guide plate 1 is provided with a plurality of raised mesh points 11 which are arranged at intervals, and the backlight source 2 is arranged on one side of the light guide plate 1;
the adhesive layer 4 is arranged on the top surface of the light guide plate 1, the adhesive layer 4 is in contact with the raised mesh points 11, and gaps 12 are formed between the adhesive layer 4 and the light guide plate 1 in the areas corresponding to the adjacent raised mesh points 11; quantum dot layer 3 is located on viscose layer 4, barrier film 5 is located on quantum dot layer 3.
In particular, the raised dots 11 are prism structures, and the specific shape of the prism structures can be selected according to the needs, such as semi-cylindrical or pyramidal prism structures.
Preferably, the plurality of raised dots 11 are uniformly arranged, and more preferably, the plurality of raised dots 11 are arranged in an array
Specifically, the light guide plate 1 is in the shape of a cuboid, the light incident surface of the light guide plate is a vertical plane, complex structures such as chamfers do not need to be manufactured, and the light guide plate is simple to manufacture and low in cost.
Preferably, the light emitted from the backlight 2 is blue light, and the quantum dot layer 3 is used for converting the blue light into white light.
Specifically, backlight unit is still including locating the frame is glued to the sealant 6 of the top surface edge all around of light guide plate 1, the edge all around of viscose layer 4 with frame 6 contact is glued to the sealant, frame 6 adopts water proof material to the sealant.
Further, the backlight module further includes a back plate 71, an aluminum extrusion 72, a printed circuit board 73, a rubber frame 74 and a reflective sheet 75, the aluminum extrusion 72 is fixed on the back plate 71 through a bolt 76, the printed circuit board 73 is disposed on the aluminum extrusion 72, the backlight source 2 is disposed on the printed circuit board 73, the rubber frame 74 is disposed on the back plate and the aluminum extrusion 72, the light guide plate 1 is disposed on the back plate 71, and the reflective sheet 75 is disposed between the back plate 71 and the light guide plate 1.
Further, an optical film group (not shown) including optical films such as a prism sheet and a diffusion sheet is provided on the barrier film 5.
Specifically, the material of the light guide plate 1 is a resin material such as polymethyl methacrylate (PMMA) or a copolymer (MS) of methyl methacrylate and styrene.
It should be noted that, in the present invention, the raised dots 11 are formed between the quantum dot layer 3 and the light guide plate 1, and the light can uniformly exit from the light guide plate 1 into the quantum dot layer 3 through the raised dots 11, so that the color gamut of the backlight module can be improved, the light exit uniformity of the backlight module can be improved, the bright band on the light entrance side can be avoided, and the product quality can be improved, and the gap 12 is formed between the adhesive layer 4 and the light guide plate 1 to meet the requirement of total internal reflection, and meanwhile, the sealant frame 6 on the peripheral edge of the top surface of the light guide plate 1 seals the periphery of the top surface of the light guide plate 1 through the sealant frame 6 and the barrier film 5 is disposed on the quantum dot layer 3, so that the reliability of the backlight module can be increased, and the low refractive index adhesive is not required to modify the shape of the light guide plate 1, and.
Referring to fig. 3, the present invention further provides a method for manufacturing a backlight module, including the following steps:
step S1, providing a light guide plate 1, and forming a plurality of raised dots 11 arranged at intervals on the top surface of the light guide plate 1.
Specifically, the step S1 forms a plurality of raised dots 11 arranged at intervals on the top surface of the light guide plate 1 through a dot printing, transferring or yellow printing process.
In particular, the raised dots 11 are prism structures, and the specific shape of the prism structures can be selected according to the needs, such as semi-cylindrical or pyramidal prism structures.
Preferably, the plurality of raised dots 11 are uniformly arranged, and more preferably, the plurality of raised dots 11 are arranged in an array
Specifically, the light guide plate 1 is in the shape of a cuboid, the light incident surface of the light guide plate is a vertical plane, complex structures such as chamfers do not need to be manufactured, and the light guide plate is simple to manufacture and low in cost.
Specifically, the material of the light guide plate 1 is a resin material such as polymethyl methacrylate (PMMA) or a copolymer (MS) of methyl methacrylate and styrene.
Step S2, providing a barrier film 5, and forming a quantum dot layer 3 on the barrier film 5;
step S3 is to provide an adhesive layer 4 on the surface of the quantum dot layer 3 away from the barrier film 5.
Step S4, attaching the adhesive layer 4 to the top surface of the light guide plate 1, wherein the adhesive layer 4 contacts the raised dots 11, and gaps 12 are formed between the adhesive layer 4 and the light guide plate 1 in the areas corresponding to the adjacent raised dots 11.
Specifically, step S3 further includes a sealant frame 6 at the peripheral edge of the top surface of the light guide plate 1, step S4 further includes attaching the peripheral edge of the adhesive layer 4 to the sealant frame 6, and the sealant frame 6 is made of a water-blocking material.
Step S5, disposing a backlight 2 on one side of the light guide plate 1;
preferably, the light emitted from the backlight 2 is blue light, and the quantum dot layer 3 is used for converting the blue light into white light.
Further, the backlight module further includes a back plate 71, an aluminum extrusion 72, a printed circuit board 73, a rubber frame 74 and a reflective sheet 75, the aluminum extrusion 72 is fixed on the back plate 71 through a bolt 76, the printed circuit board 73 is disposed on the aluminum extrusion 72, the backlight source 2 is disposed on the printed circuit board 73, the rubber frame 74 is disposed on the back plate and the aluminum extrusion 72, the light guide plate 1 is disposed on the back plate 71, and the reflective sheet 75 is disposed between the back plate 71 and the light guide plate 1.
Further, an optical film group (not shown) including optical films such as a prism sheet and a diffusion sheet is provided on the barrier film 5.
It should be noted that, in the present invention, the raised dots 11 are formed between the quantum dot layer 3 and the light guide plate 1, and the light can uniformly exit from the light guide plate 1 into the quantum dot layer 3 through the raised dots 11, so that the color gamut of the backlight module can be improved, the light exit uniformity of the backlight module can be improved, the bright band on the light entrance side can be avoided, and the product quality can be improved, and the gap 12 is formed between the adhesive layer 4 and the light guide plate 1 to meet the requirement of total internal reflection, and meanwhile, the sealant frame 6 on the peripheral edge of the top surface of the light guide plate 1 seals the periphery of the top surface of the light guide plate 1 through the sealant frame 6, so that the reliability of the backlight module can be increased, and the low refractive index glue is not needed to be used, and the shape of the light guide plate 1 is.
In summary, the present invention provides a backlight module, which includes a light guide plate, a backlight source, a quantum dot layer, an adhesive layer and a barrier film; the top surface of the light guide plate is provided with a plurality of raised mesh points which are arranged at intervals, and the backlight source is arranged on one side of the light guide plate; the adhesive layer is arranged on the top surface of the light guide plate and is in contact with the raised mesh points, and gaps are formed between the adhesive layer and the light guide plate in areas corresponding to the adjacent raised mesh points; the quantum dot layer is arranged on the adhesive layer, the barrier film is arranged on the quantum dot layer, and a plurality of raised mesh points are arranged on the top surface of the light guide plate, so that the light-emitting uniformity of the backlight module can be improved, and the color gamut of the backlight module is improved. The invention also provides a manufacturing method of the backlight module, which can improve the light-emitting uniformity of the backlight module and improve the color gamut of the backlight module.
As described above, it will be apparent to those skilled in the art that other various changes and modifications may be made based on the technical solution and concept of the present invention, and all such changes and modifications are intended to fall within the scope of the appended claims.
Claims (8)
1. A backlight module is characterized by comprising a light guide plate (1), a backlight source (2), a quantum dot layer (3), an adhesive layer (4) and a barrier film (5);
the top surface of the light guide plate (1) is provided with a plurality of raised mesh points (11) which are arranged at intervals, and the backlight source (2) is arranged on one side of the light guide plate (1);
the adhesive layer (4) is arranged on the top surface of the light guide plate (1), the adhesive layer (4) is in contact with the raised mesh points (11), and gaps (12) are formed between the adhesive layer (4) and the light guide plate (1) in areas corresponding to the space between every two adjacent raised mesh points (11); the quantum dot layer (3) is arranged on the adhesive layer (4), and the barrier film (5) is arranged on the quantum dot layer (3);
the light guide plate is characterized by further comprising a sealing rubber frame (6) arranged on the peripheral edge of the top surface of the light guide plate (1), and the peripheral edge of the adhesive layer (4) is in contact with the sealing rubber frame (6).
2. A backlight module as claimed in claim 1, characterized in that the raised dots (11) are prismatic structures; the plurality of raised screen dots (11) are uniformly arranged.
3. A backlight module according to claim 1, wherein the light guide plate (1) has a rectangular parallelepiped shape.
4. The backlight module as claimed in claim 1, wherein the light emitted from the backlight source (2) is blue light, and the quantum dot layer (3) is used for converting the blue light into white light.
5. A method for manufacturing a backlight module is characterized by comprising the following steps:
step S1, providing a light guide plate (1), and forming a plurality of raised screen dots (11) arranged at intervals on the top surface of the light guide plate (1);
step S2, providing a barrier film (5), and forming a quantum dot layer (3) on the barrier film (5);
step S3, arranging an adhesive layer (4) on the surface of the quantum dot layer (3) far away from the barrier film (5);
step S4, adhering the adhesive layer (4) to the top surface of the light guide plate (1), wherein the adhesive layer (4) is in contact with the raised mesh points (11), and gaps (12) are formed between the adhesive layer (4) and the light guide plate (1) in the areas corresponding to the adjacent raised mesh points (11);
step S5, arranging a backlight source (2) on one side of the light guide plate (1);
the step S3 further includes: and a sealant frame (6) at the peripheral edge of the top surface of the light guide plate (1), wherein the step S4 further includes attaching the peripheral edge of the adhesive layer (4) to the sealant frame (6).
6. The method for manufacturing a backlight module as claimed in claim 5, wherein the raised dots (11) are prism structures; the plurality of raised screen dots (11) are uniformly arranged; the light guide plate (1) is cuboid.
7. The method as claimed in claim 5, wherein the light emitted from the backlight source (2) is blue light, and the quantum dot layer (3) is used for converting the blue light into white light.
8. The method of claim 5, wherein the step S1 forms a plurality of raised dots (11) arranged at intervals on the top surface of the light guide plate (1) by dot printing, transferring or yellow light process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910065355.1A CN109521516B (en) | 2019-01-23 | 2019-01-23 | Backlight module and manufacturing method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910065355.1A CN109521516B (en) | 2019-01-23 | 2019-01-23 | Backlight module and manufacturing method thereof |
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| CN109521516A CN109521516A (en) | 2019-03-26 |
| CN109521516B true CN109521516B (en) | 2020-09-01 |
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| CN111665664B (en) * | 2020-06-29 | 2022-12-06 | 武汉华星光电技术有限公司 | Flexible display device |
| CN111856815B (en) * | 2020-08-10 | 2021-07-02 | 深圳市宝明科技股份有限公司 | Backlight module and display device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20060032863A (en) * | 2004-10-13 | 2006-04-18 | 엘지.필립스 엘시디 주식회사 | Backlight unit |
| CN108919560A (en) * | 2018-06-25 | 2018-11-30 | 福州大学 | A kind of quantum stippling film backing structure |
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| KR102557311B1 (en) * | 2016-08-08 | 2023-07-20 | 삼성디스플레이 주식회사 | Display apparatus |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR20060032863A (en) * | 2004-10-13 | 2006-04-18 | 엘지.필립스 엘시디 주식회사 | Backlight unit |
| CN108919560A (en) * | 2018-06-25 | 2018-11-30 | 福州大学 | A kind of quantum stippling film backing structure |
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