CN107024800B - The production method of quantum dot film, backlight module, display device and quantum dot film - Google Patents
The production method of quantum dot film, backlight module, display device and quantum dot film Download PDFInfo
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- CN107024800B CN107024800B CN201710124764.5A CN201710124764A CN107024800B CN 107024800 B CN107024800 B CN 107024800B CN 201710124764 A CN201710124764 A CN 201710124764A CN 107024800 B CN107024800 B CN 107024800B
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- 239000002096 quantum dot Substances 0.000 title claims abstract description 116
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 12
- 239000003292 glue Substances 0.000 claims abstract description 65
- 239000000565 sealant Substances 0.000 claims description 44
- 239000002994 raw material Substances 0.000 claims description 36
- 238000005520 cutting process Methods 0.000 claims description 18
- 239000000463 material Substances 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 9
- 239000002245 particle Substances 0.000 claims description 6
- 239000001052 yellow pigment Substances 0.000 claims description 6
- 239000011159 matrix material Substances 0.000 claims description 4
- 230000003287 optical effect Effects 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 2
- 239000000853 adhesive Substances 0.000 claims 1
- 230000001070 adhesive effect Effects 0.000 claims 1
- 239000011248 coating agent Substances 0.000 claims 1
- 210000002469 basement membrane Anatomy 0.000 abstract 6
- 239000010408 film Substances 0.000 description 117
- 239000010410 layer Substances 0.000 description 74
- 239000004973 liquid crystal related substance Substances 0.000 description 20
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 6
- 229910052760 oxygen Inorganic materials 0.000 description 6
- 239000001301 oxygen Substances 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- 239000012788 optical film Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000003698 laser cutting Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 239000011247 coating layer Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 208000003464 asthenopia Diseases 0.000 description 1
- 230000004438 eyesight Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 238000001721 transfer moulding Methods 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
Classifications
-
- 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)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Led Device Packages (AREA)
- Liquid Crystal (AREA)
Abstract
The invention discloses the production methods of a kind of quantum dot film, backlight module, display device and quantum dot film.The blue Bian Xianxiang that display device can be improved using the quantum dot film, realizes the narrow frame design of display device, improves the display quality of display device.Quantum dot film includes the first basement membrane and the second basement membrane being oppositely arranged, the frame glue of closed cavity is constituted between first basement membrane and second basement membrane and with first basement membrane and second basement membrane, and it is located at the intracorporal quantum dot layer of the closing chamber, wherein, the frame glue includes at least one layer of frame glue layer, includes yellow frame glue-line in at least one layer frame glue layer.
Description
Technical Field
The invention relates to the technical field of display, in particular to a quantum dot film, a backlight module, a display device and a manufacturing method of the quantum dot film.
Background
Among flat panel Display devices, a Thin Film Transistor liquid crystal Display (TFT-LCD) has the characteristics of small volume, low power consumption, relatively low manufacturing cost, no radiation, and the like, and occupies a leading position in the current flat panel Display market.
The lcd generally includes a liquid crystal module and a backlight module for providing backlight to the liquid crystal module, wherein the backlight module generally uses a light-emitting diode (LED) as a light source. In order to realize high color gamut display of the liquid crystal display device, a quantum dot technology is applied to the backlight module, specifically, the quantum dot film comprises two kinds of quantum dots with different grain diameters, and blue light emitted by the blue light LED excites the two kinds of quantum dots to generate red light and green light which are mixed with the blue light emitted by the blue light LED to form white light.
The quantum dot film 01 has a structure as shown in fig. 1, and includes two base films 011 and a quantum dot layer 012 located between the two base films 011. Because the influence of water vapor and oxygen on the quantum dots is large, the quantum dot film is generally cut by laser instead of a cutting die. The laser cutting can sinter the edge region of the quantum dot film, so as to prevent water vapor and oxygen from entering, but at the same time, the quantum dots located in the edge region can also be disabled (such as disabled quantum dots 013 in fig. 1), so that a "blue edge" appears at the edge of the display region of the backlight module. The "blue edge" not only affects the display effect of the liquid crystal display device, but also causes eye fatigue and thus causes a reduction in eyesight.
At present, the quantum dot technology is mainly applied to large-size liquid crystal display products such as televisions, and is rarely applied to medium-size and small-size products such as mobile phones and tablet computers. This is because: the frame of the large-size liquid crystal display product is large in size, the blue edge can be shielded through the structural design of the frame, the frame of the medium-size and small-size liquid crystal display product is small in size, and the blue edge is difficult to shield through the structural design of the frame. Therefore, the quantum dot technology is difficult to be applied to small and medium sized liquid crystal display products such as mobile phones.
Disclosure of Invention
The embodiment of the invention aims to provide a quantum dot film, a backlight module, a display device and a manufacturing method of the quantum dot film. The quantum dot film can improve the blue edge phenomenon of the display device, realize the narrow frame design of the display device and improve the display quality of the display device.
The quantum dot film provided by the embodiment of the invention comprises a first base film and a second base film which are arranged oppositely, a sealant which is positioned between the first base film and the second base film and forms a closed cavity together with the first base film and the second base film, and a quantum dot layer positioned in the closed cavity, wherein the sealant comprises at least one sealant layer, and the at least one sealant layer comprises a yellow sealant layer.
Preferably, the quantum dot layer is a quantum dot coating layer disposed on one side of the first base film close to the second base film.
Preferably, the width of the frame glue is 0.2 +/-0.1 mm.
Preferably, the sealant includes a transparent optical sealant.
Optionally, the sealant only includes a yellow sealant layer, the yellow sealant layer includes a transparent substrate and yellow pigment particles doped in the transparent substrate, and the concentration of the yellow pigment particles is gradually reduced along a direction close to the closed cavity.
Optionally, the frame glue comprises two frame glue layers, namely a yellow frame glue layer and a colorless frame glue layer, and the thickness of the yellow frame glue layer is gradually reduced along the direction close to the closed cavity.
The quantum dot film adopts the structure of the embodiment, and the quantum dot layer is sealed in the sealed cavity and can be fully isolated from water vapor and oxygen, so that the quantum dot film can be cut by adopting a cutting die, and compared with the existing laser cutting technology, the quantum dot film cannot cause the failure of quantum dots; in addition, the overall yellow frame glue and the incident blue light can be mixed into white light. Therefore, the quantum dot film is adopted by the backlight module of the display device, the blue edge phenomenon can be effectively improved, the frame of the display device can be designed to be narrower, and the display quality is obviously improved. The quantum dot film structure can be suitable for display device products of various specifications and sizes, and is particularly suitable for medium and small-sized products with narrow frame design requirements.
The embodiment of the invention also provides a backlight module which comprises the blue light emitting diode lamp group and the quantum dot film in any technical scheme. Compared with the prior art, the quantum dot failure problem of the quantum dot film is solved, and the overall yellow frame glue of the quantum dot film can be mixed with the incident blue light to form white light, so that the blue edge phenomenon of the backlight module is effectively improved.
The embodiment of the invention also provides a display device which comprises the backlight module in the technical scheme. Compared with the prior art, the blue edge phenomenon of the display device is effectively improved, the frame of the display device can be designed to be narrower, and the display quality is obviously improved.
The embodiment of the present invention further provides a method for manufacturing a quantum dot film according to any one of the foregoing technical solutions, including:
forming a frame glue pattern on a first base film raw material, wherein the frame glue pattern and the first base film raw material form a plurality of cavities, the frame glue pattern comprises at least one pattern layer, and the at least one pattern layer comprises a yellow pattern layer;
forming a quantum dot layer on the surface of the first base film raw material corresponding to each cavity;
covering a second base film raw material on one side of the frame glue pattern, which is far away from the first base film raw material;
and cutting the structure which finishes the steps into a plurality of quantum dot films along a set cutting line, wherein the set cutting line is arranged corresponding to the frame glue pattern, and the orthographic projection of the set cutting line on the first base film raw material falls into the edge inner side of the orthographic projection of the frame glue pattern on the first base film raw material.
Preferably, the forming of the sealant pattern on the first base film raw material includes:
forming a yellow pattern layer on the first base film raw material by using a first transfer mold, wherein the yellow pattern layer comprises a plurality of yellow frame glue layer units, each yellow frame glue layer unit is arranged corresponding to one cavity, and the thickness of each yellow frame glue layer unit is gradually reduced along the direction close to the cavity;
and forming a colorless pattern layer superposed and spliced with the yellow pattern layer on the first base film stock by using a second transfer die.
According to the quantum dot film manufactured by the method, the quantum dot layer is sealed in the sealed cavity and can be fully isolated from water vapor and oxygen, and the quantum dot film can be cut by a cutting die and cannot cause quantum dot failure; in addition, the overall yellow frame glue and the incident blue light can be mixed into white light. The backlight module of the display device adopts the quantum dot film, the blue edge phenomenon can be effectively improved, the frame of the display device can be designed to be narrower, and the display quality is obviously improved.
Drawings
FIG. 1 is a schematic cross-sectional view of a prior art quantum dot film;
FIG. 2 is a schematic cross-sectional view of a quantum dot film according to an embodiment of the invention;
FIG. 3 is a schematic cross-sectional view of a quantum dot film according to another embodiment of the invention;
FIG. 4 is a schematic view of a display device according to an embodiment of the present invention;
FIG. 5 is a schematic view of a display device according to another embodiment of the present invention;
FIG. 6 is a schematic flow chart of a method for fabricating a quantum dot film according to an embodiment of the invention;
FIG. 7a is a schematic diagram illustrating the embodiment of the present invention after completing step 101 in FIG. 6;
FIG. 7b is a schematic diagram illustrating the embodiment of the present invention after completing step 102 in FIG. 6;
FIG. 7c is a schematic diagram of the embodiment of the present invention after completing step 103 in FIG. 6;
FIG. 7d is a schematic diagram illustrating the method of FIG. 6 after step 104 is completed;
FIG. 8 is a schematic cross-sectional view of a first transfer mold employed in an embodiment of the present invention;
FIG. 9 is a schematic cross-sectional view of a second transfer mold used in one embodiment of the present invention.
Reference numerals:
the prior art comprises the following steps:
01-a quantum dot film; 011-base film; 012-quantum dot layer; 013-failure quantum dots;
the invention comprises the following parts:
2-a quantum dot film; 21-a first base film; 22-a second base film; 23-frame glue; 24-a quantum dot layer;
231-yellow frame glue layer; 232-colorless frame glue layer; 41-liquid crystal panel; 42-a backlight module;
43-a back plate; 44-a reflective sheet; 45-a light guide plate; 46-an optical film material; 47-light-shielding double-sided tape;
48-sealing glue; 71-first base film stock; 72-frame glue pattern; 73-cavity; 74-second base film stock;
75-cutting lines; 81-a first groove; 91-a second groove; 92-bump.
Detailed Description
In order to improve the blue edge phenomenon of a display device, realize the narrow frame design of the display device and improve the display quality of the display device, the embodiment of the invention provides a quantum dot film, a backlight module, a display device and a manufacturing method of the quantum dot film. In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail by referring to the following examples.
As shown in fig. 2, an embodiment of the present invention provides a quantum dot film 2, where the quantum dot film 2 includes a first base film 21 and a second base film 22 that are disposed opposite to each other, and a sealant 23 and a quantum dot layer 24 that are disposed between the first base film 21 and the second base film 22, where the sealant 23, the first base film 21 and the second base film 22 form a closed cavity, and the quantum dot layer 24 is disposed in the closed cavity; the sealant 23 includes at least one sealant layer, and the sealant layer includes a yellow sealant layer 231.
In the embodiment of the invention, the quantum dot film adopts the structure of the embodiment, and the quantum dot layer is sealed in the sealed cavity and can be fully isolated from water vapor and oxygen, so that the quantum dot film can be cut by adopting a cutting die, and compared with the existing laser cutting technology, the quantum dot film cannot cause the quantum dot to lose efficacy.
The quantum dot layer in the quantum dot film comprises two kinds of quantum dots with different grain diameters, and when blue light emitted by the blue light LED is incident into the quantum dot film, the two kinds of quanta in the quantum dot film are excited by the blue light to generate red light and green light which are mixed with the blue light to form white light; the overall yellow frame glue can be mixed with the incident blue light to form white light. Therefore, the quantum dot film is adopted by the backlight module of the display device, the blue edge phenomenon can be effectively improved, the frame of the display device can be designed to be narrower, and the display quality is obviously improved. The quantum dot film structure can be suitable for display device products of various specifications and sizes, and is particularly suitable for medium and small-sized products with narrow frame design requirements.
In an alternative embodiment of the present invention, the quantum dot layer in the quantum dot film is a quantum dot coating layer located on one side of the first base film close to the second base film, so that the quantum dot layer can be formed by a coating process, and the process is simple.
In an optional embodiment of the invention, the width c of the frame sealant is 0.2 ± 0.1mm, and the frame sealant with the width is adopted by the quantum dot film, so that the narrow frame design can be better realized under the condition of not influencing the isolation effect of the frame sealant. In addition, the frame glue can be made of transparent optical glue, and has good sealing performance and light transmittance.
The quantum dot film provided by the embodiment of the invention can be applied to a side light-entering type backlight module or a direct-down light-entering type backlight module. As shown in fig. 2, in the quantum dot film 2 applied to the side-entry backlight module according to an embodiment of the present invention, the sealant 23 of the quantum dot film 2 only includes one sealant layer, and the sealant layer is a yellow sealant layer 231. The yellow frame glue layer comprises a transparent matrix and yellow pigment particles mixed in the transparent matrix, and the concentration of the yellow pigment particles is gradually reduced along the direction close to the closed cavity. When the quantum dot film with the structure is applied to the side-in light type backlight module, the side, away from the sealed cavity, of the frame glue in the quantum dot film is close to the blue light LED, the blue light emitted by the blue light LED is injected into the frame glue in the quantum dot film, the intensity of the blue light is gradually weakened along the direction of the sealed cavity, and the yellow frame glue layer can enable the white light to be generated more uniformly.
As shown in fig. 3, in the quantum dot film 2 applied to the side-entry backlight module according to another embodiment of the present invention, the sealant 23 of the quantum dot film 2 includes two sealant layers, i.e., a yellow sealant layer 231 and a colorless sealant layer 232, and the thickness of the yellow sealant layer 231 is gradually reduced along a direction approaching the closed cavity, so that the sealant manufacturing process is simple and convenient, and the yellow sealant layer can generate more uniform white light.
The embodiment of the invention also provides a backlight module which comprises the blue light emitting diode lamp group and the quantum dot film in any one of the technical schemes. Compared with the prior art, the quantum dot failure problem of the quantum dot film is solved, and the overall yellow frame glue of the quantum dot film can be mixed with the incident blue light to form white light, so that the blue edge phenomenon of the backlight module is effectively improved.
The embodiment of the invention also provides a display device which comprises the backlight module in the technical scheme. Compared with the prior art, the blue edge phenomenon of the display device is effectively improved, the frame of the display device can be designed to be narrower, the display device is particularly suitable for medium and small-sized products with narrow frame design requirements, and the display quality is obviously improved.
As shown in fig. 4, in a display device provided in an embodiment of the present invention, the display device includes a liquid crystal panel 41, a backlight module 42, and a light-shielding double-sided tape 47 connecting the liquid crystal panel 41 and the backlight module 42, wherein: the backlight module 42 includes a back plate 43 having a receiving space, a reflective sheet 44, a light guide plate 45, a quantum dot film 2, and an optical film material 46 sequentially disposed in the back plate 43, and a blue LED lamp set (not shown) disposed on the light-incident end surface of the light guide plate 45, wherein the liquid crystal panel 41 is disposed on a side of the light-shielding double-sided tape 47 away from the optical film material 46. In the present embodiment, the liquid crystal panel 41 and the backlight module 42 are bonded by the light-shielding double-sided tape 47. By adopting the structural design, the frame of the display device can be designed to be narrower, and the display quality is further improved.
As shown in fig. 5, in a display device provided by another embodiment of the present invention, the display device includes a liquid crystal panel 41, a backlight module 42, and a sealant 48 connecting an end surface of the liquid crystal panel 41 and an end surface of the backlight module 42, wherein: the backlight module 42 includes a back plate 43 having an accommodating space, and a reflective sheet 44, a light guide plate 45, the quantum dot film 2 and an optical film material 46 sequentially disposed in the back plate 43, wherein the liquid crystal panel 41 is disposed on a side of the optical film material 46 far away from the quantum dot film 2. In this embodiment, the sealant 48 connects the end surface of the liquid crystal panel 41 and the end surface of the backlight module 42, so that the frame of the display device can be designed to be narrower, thereby improving the display quality.
The specific type of the display device is not limited, and may be, for example, a liquid crystal television, a liquid crystal display, a digital photo frame, a tablet computer, electronic paper, a mobile phone, and the like.
As shown in fig. 6, an embodiment of the present invention further provides a method for manufacturing a quantum dot film according to any one of the foregoing technical solutions, where the method includes:
step 101, as shown in fig. 7a, forming a sealant pattern 72 on a first base film raw material 71, the sealant pattern 72 and the first base film raw material 71 forming a plurality of cavities 73, wherein the sealant pattern 72 includes at least one pattern layer, and the at least one pattern layer includes a yellow pattern layer;
step 102, as shown in fig. 7b, forming a quantum dot layer 24 on the surface of each cavity 73 on the first base film raw material 71 in the previous step;
step 103, as shown in fig. 7c, the second base film raw material 74 is covered on the side of the sealant pattern 72 away from the first base film raw material;
step 104, as shown in fig. 7c and 7d, the structure having completed the above steps is cut into a plurality of quantum dot films 2 along a set cutting line (e.g., the cutting line 75 in fig. 7 c), the set cutting line is disposed corresponding to the sealant pattern, and an orthographic projection of the set cutting line on the first base film material falls inside an edge of an orthographic projection of the sealant pattern on the first base film material.
According to the quantum dot film manufactured by the method, the quantum dot layer is sealed in the sealed cavity and can be fully isolated from water vapor and oxygen, and the quantum dot film can be cut by a cutting die and cannot cause quantum dot failure; in addition, the overall yellow frame glue and the incident blue light can be mixed into white light. The backlight module of the display device adopts the quantum dot film, the blue edge phenomenon can be effectively improved, the frame of the display device can be designed to be narrower, and the display quality is obviously improved.
In an alternative embodiment of the present invention, the forming of the sealant pattern on the first base film raw material in step 101 includes:
step 201, forming a yellow pattern layer on a first base film raw material by using a first transfer mold, wherein the yellow pattern layer comprises a plurality of yellow frame glue layer units, each yellow frame glue layer unit is arranged corresponding to one cavity, and the thickness of each yellow frame glue layer unit is gradually reduced along the direction close to the cavity;
step 202, forming a colorless pattern layer superposed and spliced with the yellow pattern layer on the first base film stock by using a second transfer mold.
In an embodiment of the present invention, the first transfer mold used in step 201 is as shown in fig. 8, the first transfer mold has a first groove 81 with the same pattern as the yellow pattern layer of the sealant pattern, first, a raw material forming the yellow pattern layer is filled into the first groove 81 of the first transfer mold, then, the side of the first transfer mold having the first groove 81 is attached to the side of the first base film raw material, so that the raw material in the first groove 81 of the first transfer mold is transferred to the first base film raw material, thereby transferring the yellow pattern layer to the first base film raw material;
the second transfer mold used in step 202 is shown in fig. 9, the second transfer mold has a second groove 91 with the same pattern as the colorless pattern layer of the seal pattern and a detachable protrusion 92 with the same pattern as the yellow pattern layer of the seal pattern, the raw material forming the colorless pattern layer is filled into the second groove 91 of the second transfer mold, the protrusion 92 of the second transfer mold is detached, the side of the second transfer mold with the second groove 91 is attached to the side of the first base film raw material with the yellow pattern layer, the raw material in the second groove 91 is attached to the yellow pattern layer, the raw material in the second groove 91 of the second transfer mold is transferred to the yellow pattern layer of the second base film raw material, and the colorless pattern layer is transferred to the first base film raw material and overlapped and spliced with the yellow pattern layer.
In this embodiment, the yellow pattern layer on the first transfer mold and the colorless pattern layer on the second transfer mold are sequentially transferred onto the first base film material, and finally the required sealant pattern is formed. In the embodiment, the frame glue pattern is formed by transfer molding, so that the frame glue pattern is simple and convenient to manufacture, and the frame glue pattern layer can be uniformly arranged on the first base film raw material and forms a closed cavity together with the first base film and the second base film.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (8)
1. The quantum dot film is characterized by comprising a first base film and a second base film which are arranged oppositely, frame glue which is positioned between the first base film and the second base film and forms a closed cavity together with the first base film and the second base film, and a quantum dot layer which is positioned in the closed cavity, wherein the frame glue comprises at least one frame glue layer, and the at least one frame glue layer comprises a yellow frame glue layer;
the frame glue only comprises a yellow frame glue layer, the yellow frame glue layer comprises a transparent matrix and yellow pigment particles doped in the transparent matrix, and the concentration of the yellow pigment particles is gradually reduced along the direction close to the closed cavity; or,
the frame glue comprises two frame glue layers, namely a yellow frame glue layer and a colorless frame glue layer, wherein the thickness of the yellow frame glue layer is gradually reduced along the direction close to the closed cavity.
2. The quantum dot film of claim 1, wherein the quantum dot layer is a quantum dot coating disposed on a side of the first base film adjacent to the second base film.
3. The quantum dot film of claim 1, wherein the frame glue has a width of 0.2 ± 0.1 mm.
4. The quantum dot film of claim 1, wherein the sealant comprises a transparent optical adhesive.
5. A backlight module comprising a blue light emitting diode lamp set and the quantum dot film of any one of claims 1 to 4.
6. A display device comprising the backlight module according to claim 5.
7. A method of making the quantum dot film of claim 1, comprising:
forming a frame glue pattern on a first base film raw material, wherein the frame glue pattern and the first base film raw material form a plurality of cavities, the frame glue pattern comprises at least one pattern layer, and the at least one pattern layer comprises a yellow pattern layer;
forming a quantum dot layer on the surface of the first base film raw material corresponding to each cavity;
covering a second base film raw material on one side of the frame glue pattern, which is far away from the first base film raw material;
and cutting the structure which finishes the steps into a plurality of quantum dot films along a set cutting line, wherein the set cutting line is arranged corresponding to the frame glue pattern, and the orthographic projection of the set cutting line on the first base film raw material falls into the edge inner side of the orthographic projection of the frame glue pattern on the first base film raw material.
8. The method according to claim 7, wherein the forming of the sealant pattern on the first base film material comprises:
forming a yellow pattern layer on the first base film raw material by using a first transfer mold, wherein the yellow pattern layer comprises a plurality of yellow frame glue layer units, each yellow frame glue layer unit is arranged corresponding to one cavity, and the thickness of each yellow frame glue layer unit is gradually reduced along the direction close to the cavity;
and forming a colorless pattern layer superposed and spliced with the yellow pattern layer on the first base film stock by using a second transfer die.
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| CN201710124764.5A CN107024800B (en) | 2017-03-03 | 2017-03-03 | The production method of quantum dot film, backlight module, display device and quantum dot film |
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| KR102439084B1 (en) * | 2017-08-29 | 2022-09-02 | 삼성디스플레이 주식회사 | Method of manufacturing a display device |
| CN107420804A (en) * | 2017-09-07 | 2017-12-01 | 合肥惠科金扬科技有限公司 | Quantum dot backlight module and display device |
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