CN114373394B - Display device and method for manufacturing display device - Google Patents
Display device and method for manufacturing display device Download PDFInfo
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- CN114373394B CN114373394B CN202210067775.5A CN202210067775A CN114373394B CN 114373394 B CN114373394 B CN 114373394B CN 202210067775 A CN202210067775 A CN 202210067775A CN 114373394 B CN114373394 B CN 114373394B
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 18
- 238000000034 method Methods 0.000 title claims description 22
- 239000002131 composite material Substances 0.000 claims abstract description 128
- 238000005452 bending Methods 0.000 claims abstract description 106
- 239000000463 material Substances 0.000 claims abstract description 58
- 239000010410 layer Substances 0.000 claims description 424
- 239000012790 adhesive layer Substances 0.000 claims description 94
- 239000002184 metal Substances 0.000 claims description 35
- 239000003292 glue Substances 0.000 claims description 22
- 239000004820 Pressure-sensitive adhesive Substances 0.000 claims description 13
- 230000003287 optical effect Effects 0.000 claims description 13
- 230000001681 protective effect Effects 0.000 claims description 10
- 239000011521 glass Substances 0.000 claims description 9
- 229920000728 polyester Polymers 0.000 claims description 7
- 229920001169 thermoplastic Polymers 0.000 claims description 7
- 239000004416 thermosoftening plastic Substances 0.000 claims description 7
- 238000002360 preparation method Methods 0.000 abstract description 7
- 238000010586 diagram Methods 0.000 description 12
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 6
- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 239000002390 adhesive tape Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229920001225 polyester resin Polymers 0.000 description 2
- 239000004645 polyester resin Substances 0.000 description 2
- -1 polyethylene terephthalate Polymers 0.000 description 2
- 229920000139 polyethylene terephthalate Polymers 0.000 description 2
- 239000005020 polyethylene terephthalate Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 239000006261 foam material Substances 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
Classifications
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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
-
- 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
- G09F9/33—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 being semiconductor devices, e.g. diodes
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/549—Organic PV cells
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
- Electroluminescent Light Sources (AREA)
Abstract
The embodiment of the application discloses a display device and a preparation method of the display device, wherein the display device comprises the following components: the display panel comprises a display area and a bending area, and the display area is connected with the bending area; the support layer is arranged on one side of the display panel and corresponds to the display area; the composite layer is arranged on one side of the display panel and corresponds to the bending area, the composite layer and the supporting layer are positioned on the same side of the display panel, and the composite layer is of an integrated structure; when the display panel is in an unbent state, the supporting layer and the composite layer are arranged at intervals, and the supporting layer and the composite layer have a section difference; when the display panel is in a bending state, the orthographic projection area of the support layer in the display area is partially overlapped with the orthographic projection area of the composite layer in the display area. According to the application, the composite layer is arranged in the bending area of the display panel, so that the supporting strength of the bending area of the display panel is improved, and the composite layer is of an integrated structure, so that the material and manufacturing cost can be reduced.
Description
Technical Field
The application belongs to the technical field of display devices, and particularly relates to a display device and a preparation method of the display device.
Background
With the continuous development of display technology, the manufacturing technology of display devices is also tending to mature, and currently, the mainstream display devices include organic light emitting display devices, liquid crystal display devices, plasma display devices, and the like. However, with the continual pursuit of display device performance, flexible display devices have been developed that can be mass produced and provide reliable support for development of foldable products.
In order to reduce the lower frame of the flexible display device, the lower side of the display panel is typically bent to the back of the display area of the display panel. Because the display panel of the flexible display device has poor stiffness, in order to prevent the display panel from being bad due to collapse in the process of manufacturing, the display panel is supported by the supporting layer, and the fixing and filling of the bending section difference are realized by the filling adhesive tape. However, the structure of the supporting layer and the bending region may occur in the bending region of the display panel, and this structural design not only reduces the supporting strength of the display panel, but also increases the risk of glue overflow.
Disclosure of Invention
The embodiment of the application provides a display device and a preparation method of the display device, which can improve the supporting strength of a bending area of a display panel and reduce the material and manufacturing cost.
In a first aspect, an embodiment of the present application provides a display apparatus, including:
the display panel comprises a display area and a bending area, and the display area is connected with the bending area;
the support layer is arranged on one side of the display panel and corresponds to the display area;
the composite layer is arranged on one side of the display panel and corresponds to the bending area, the composite layer and the supporting layer are positioned on the same side of the display panel, and the composite layer is of an integrated structure;
when the display panel is in an unbent state, the supporting layer and the composite layer are arranged at intervals, and the supporting layer and the composite layer have a section difference;
when the display panel is in a bending state, the support layer is partially overlapped with the composite layer in the orthographic projection area of the display area.
Optionally, the composite layer includes a first glue layer, a material layer, and a second glue layer, and the material layer is disposed between the first glue layer and the second glue layer.
Optionally, the material of the first adhesive layer is a pressure-sensitive adhesive, the material of the material layer is thermoplastic polyester, and the material of the second adhesive layer is a pressure-sensitive adhesive.
Optionally, the display device further includes a metal layer, the metal layer is disposed on one side of the support layer away from the display panel, and a buffer layer is disposed between the metal layer and the support layer.
Optionally, when the display panel is in a bending state, a side of the composite layer away from the bending region is attached to the metal layer.
Optionally, a polarizer, an optical adhesive layer and a touch panel are sequentially stacked on one side, away from the supporting layer, of the display panel.
In a second aspect, an embodiment of the present application provides a method for manufacturing a display device, including:
providing a release film layer, a supporting layer, a composite layer, a glue-free filling film layer, a protective film layer and a display panel, wherein the composite layer is of an integrated structure, the display panel comprises a display area and a bending area, the display area is connected with the bending area, the supporting layer and the composite layer are respectively attached to the release film layer, the supporting layer and the composite layer are arranged at intervals, and the supporting layer and the composite layer have a section difference;
removing the release film layer, attaching the support layer to the display area, and attaching the composite layer to the bending area, wherein the composite layer and the support layer are positioned on the same side of the display panel;
and removing the glue-free filling film layer and the protective film layer, and bending the bending region until the orthographic projection region of the support layer in the display region is partially overlapped with the orthographic projection region of the composite layer in the display region.
Optionally, after removing the release film layer, the method further includes:
and removing glass on one side of the display panel, which is close to the supporting layer, in a laser stripping mode, attaching the supporting layer to the display area after glass removal, and attaching the composite layer to the bending area after glass removal.
Optionally, the method further comprises:
providing a metal layer and a buffer layer;
attaching the buffer layer to one side of the support layer far away from the display area;
and attaching the metal layer to one side of the buffer layer far away from the supporting layer.
Optionally, when the bending region is bent to a position where the orthographic projection region of the supporting layer in the display region is partially overlapped with the orthographic projection region of the composite layer in the display region, a side, away from the bending region, of the composite layer is attached to a side, away from the buffer layer, of the metal layer.
Optionally, the method further comprises:
providing a polaroid, an optical adhesive layer and a touch panel;
attaching the polaroid to one side of the display panel far away from the supporting layer;
attaching the optical adhesive layer to one side of the polaroid, which is far away from the display panel;
and attaching the touch panel to one side of the optical adhesive layer far away from the polaroid.
Optionally, the composite layer includes first glue film, material layer and second glue film, the material layer sets up first glue film with between the second glue film, the material of first glue film is pressure sensitive adhesive, the material of material layer is thermoplastic polyester, the material of second glue film is pressure sensitive adhesive.
The embodiment of the application provides a display device which comprises a display panel, wherein the display panel comprises a display area and a bending area, and the display area is connected with the bending area; the support layer is arranged on one side of the display panel and corresponds to the display area; the composite layer is arranged on one side of the display panel and corresponds to the bending area, the composite layer and the supporting layer are positioned on the same side of the display panel, and the composite layer is of an integrated structure; when the display panel is in an unbent state, the supporting layer and the composite layer are arranged at intervals, and the supporting layer and the composite layer have a section difference; when the display panel is in a bending state, the orthographic projection area of the support layer in the display area is partially overlapped with the orthographic projection area of the composite layer in the display area. According to the application, the composite layer is arranged in the bending area of the display panel, and the support thickness of the display panel is increased due to the section difference between the composite layer and the support layer, so that the support strength of the bending area of the display panel is improved, and the composite layer is of an integrated structure, so that the material and manufacturing cost can be reduced.
Drawings
The technical solution of the present application and its advantageous effects will be made apparent by the following detailed description of the specific embodiments of the present application with reference to the accompanying drawings.
Fig. 1 is a schematic structural diagram of a display device in the prior art according to an embodiment of the present application.
Fig. 2 is a schematic structural diagram of a bending region of a display panel according to an embodiment of the present application.
Fig. 3 is a schematic diagram of a first structure of a display device according to an embodiment of the present application.
Fig. 4 is a schematic diagram of a second structure of a display device according to an embodiment of the present application.
Fig. 5 is a schematic structural diagram of a composite layer in a display device according to an embodiment of the present application.
Fig. 6 is a schematic flow chart of a method for manufacturing a display device according to an embodiment of the application.
Fig. 7 is a schematic diagram of a third structure of a display device according to an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. It will be apparent that the described embodiments are only some, but not all, embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to fall within the scope of the application.
In order to reduce the lower frame of the flexible display device, the lower side of the display panel is typically bent to the back of the display area of the display panel. Because the display panel of the flexible display device has poor stiffness, in order to prevent the display panel from being bad due to collapse in the process of manufacturing, the display panel is supported by the supporting layer, and the fixing and filling of the bending section difference are realized by the filling adhesive tape. However, the structure of the supporting layer and the bending region may occur in the bending region of the display panel, and this structural design not only reduces the supporting strength of the display panel, but also increases the risk of glue overflow.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a display device according to an embodiment of the application. The display device 100 may include a display panel 101, where the display panel 101 includes a display region 1011 and a bending region 1012. The display device 100 further includes a supporting layer 102 disposed on one side of the display panel 101, where the supporting layer 102 includes a first supporting layer 1021 disposed corresponding to the display area 1011 and a second supporting layer 1022 disposed corresponding to the bending area 1012, and the first supporting layer 1021 and the second supporting layer 1022 are made of the same material and have the same thickness.
The display device 100 further includes a buffer layer 103 and a metal layer 104 disposed on a side of the first support layer 1021 away from the display region 1011, wherein the buffer layer 103 is disposed between the first support layer 1021 and the metal layer 104. When the display panel 101 is in a bending state, a filling adhesive layer 105 is disposed between the second supporting layer 1022 and the metal layer 104, wherein the filling adhesive layer 105 has adhesion, one side of the second supporting layer 1022 away from the bending region 1012 is adhered to one side of the filling adhesive layer 105, one side of the metal layer 104 away from the buffer layer 103 is adhered to the other side of the filling adhesive layer 105, so as to achieve adhesion between the second supporting layer 1022 and the metal layer 104, and thus when the bending region 1012 of the display panel 101 is bent to the back of the display region 1011, fixing is achieved through the supporting layer 102, and filling bending step difference is achieved through the filling adhesive layer 105.
Please refer to fig. 2, fig. 2 is a schematic diagram illustrating a structure of a bending region of a display panel according to an embodiment of the present application. As shown in fig. 1, a second supporting layer 1022 and a filling adhesive layer 105 are disposed between the bending region 1012 of the display panel 101 and the metal layer 104. The structure of the filling adhesive layer 105 includes a first material layer 41 and a first adhesive layer 61 that are stacked, and the structure of the second supporting layer 1022 includes a second adhesive layer 62, a second material layer 42, and a third adhesive layer 63 that are stacked in sequence, where the first adhesive layer 61 is bonded to one side of the metal layer 104, the first material layer 41 is bonded to the second adhesive layer 62 on one side far from the first adhesive layer 61, and the third adhesive layer 63 is bonded to the bending area 1012 on one side far from the second material layer 42.
However, the laminated structure of the second supporting layer 1022 and the filling adhesive layer 105 is disposed in the bending area 1012 of the display panel 101, so that the bending area generates a structure of three adhesive layers and two material layers, the formed multi-layer adhesive layer weakens the supporting strength of the bending area 1012, resulting in the collapse of bending arc, resulting in the breakage of the bending area 1012, and the like, and the dislocation is easy to cause the step difference between the second supporting layer 1022 and the filling adhesive layer 105 due to the lower modulus of the adhesive layer, and the risk of adhesive overflow and the like is increased.
In order to solve the above problems, an embodiment of the present application provides a display device. Referring to fig. 3 and fig. 4, fig. 3 is a first structural schematic diagram of a display device according to an embodiment of the application, and fig. 4 is a second structural schematic diagram of the display device according to an embodiment of the application. The display device 200 may be an actively illuminated display device, such as an OLED display device, a micro_led display device, an LED display device, or the like. The display device 200 may include a display panel 201, a support layer 202, and a composite layer 203.
The display panel 201 may include a display area 2011 and a bending area 2012, where the display area 2011 and the bending area 2012 are connected to each other, the bending area 2012 may bend around a connection between the display area 2011 and the bending area 2012, and may bend to a back surface of the display area 2011, so that a portion of the orthographic projection area of the bending area 2012 falls on the display area 2011.
The supporting layer 202 is disposed on one side of the display panel 201, and the supporting layer 202 is disposed corresponding to the display area 2011, i.e. the front projection area of the supporting layer 202 coincides with the front projection area of the display area 2011.
The composite layer 203 is disposed on one side of the display panel 201, and the composite layer 203 is disposed corresponding to the bending region 2012, specifically, the composite layer 203 coincides with a portion of the orthographic projection region of the bending region 2012. The composite layer 203 and the supporting layer 202 are located on the same side of the display panel 201, and the composite layer 203 is an integrated structure.
In the prior art, when the display panel 101 is in an unbent state, a first supporting layer 1021 and a second supporting layer 1022 are respectively disposed on one side of the display area 1011 and one side of the bending area 1012 of the display panel 101, and the thicknesses of the first supporting layer 1021 and the second supporting layer 1022 are the same. When the display panel 101 is in a bending state, a filling adhesive layer 105 is added between the metal layer 104 and the second supporting layer 1022 to achieve bonding for fixing and filling the bending step. However, since the filling adhesive layer 105 and the second supporting layer 1022 are two separate structures, the two structures are directly bonded through the second adhesive layer 62 in the second supporting layer 1022, but three layers of adhesive layers are disposed between the filling adhesive layer 105 and the second supporting layer 1022, the multi-layer adhesive layers can reduce the supporting strength of the bending region 1012, and dislocation is easily caused, so that the risk of glue overflow is increased.
With continued reference to fig. 3 and 4, the display device 200 may further include a buffer layer 204 and a metal layer 205, wherein the metal layer 205 is disposed on a side of the support layer 202 away from the display panel 201, and the buffer layer 204 is disposed between the metal layer 205 and the support layer 202, i.e. the buffer layer 204 is disposed between the metal layer 205 and the support layer 202. The material of the buffer layer 204 may be a foam material or the like, and the material of the metal layer 205 may be a stainless steel material or the like. When the display panel 201 is in a folded state, a side of the composite layer 203 away from the folded region 2012 is attached to a side of the metal layer 205 away from the buffer layer 204.
The display panel 201 provided in the embodiment of the present application is different from the display panel 101 in the prior art in that: when the display panel 201 is in an unbent state, the supporting layer 202 and the composite layer 203 are disposed at intervals, and a step is present between the supporting layer 202 and the composite layer 203, specifically, the thickness of the composite layer 203 is greater than the thickness of the supporting layer 202. When the display panel 201 is in the bending state, since the thickness of the composite layer 203 is greater than the thickness of the supporting layer 202, and the composite layer 203 is of an integrated structure, the thickness of the composite layer 203 is equal to the sum of the thicknesses of the second supporting layer 1022 and the filling adhesive layer 105 in the prior art, so that the thickness of the composite layer 203 can meet the requirement that the composite layer 203 can be directly attached to the metal layer 205 when the display panel 201 is in the bending state, and the front projection area of the supporting layer 202 in the display area 2011 and the front projection area of the composite layer 203 are partially overlapped, the bending area 2012 of the display panel 201 is bent to the back of the display area 2011, and the lower frame of the flexible display device 200 is reduced.
Referring to fig. 5, fig. 5 is a schematic structural diagram of a composite layer in a display device according to an embodiment of the application. The composite layer 203 includes a first glue layer 51, a material layer 31, and a second glue layer 52, and the material layer 31 is disposed between the first glue layer 51 and the second glue layer 52. The material of the first adhesive layer 51 may be a pressure sensitive adhesive, and the material of the second adhesive layer 52 may be a pressure sensitive adhesive. The material of the material layer 31 is a thermoplastic polyester containing polyethylene terephthalate, also referred to as polyester resin, which is a polycondensate of terephthalic acid and ethylene glycol.
It will be appreciated that the integrated composite layer 203 replaces the original combined structure of the second supporting layer 1022 and the filling adhesive layer 105, specifically, the thickness of the first adhesive layer 51 and the first adhesive layer 61 may be the same, the thickness of the second adhesive layer 52 and the third adhesive layer 63 may be the same, and the thickness of the material layer 31 corresponds to the sum of the thicknesses of the second adhesive layer 62, the first material layer 41 and the second material layer 42. By arranging the integrated composite layer 203, only two layers of adhesive layers are needed to be respectively adhered to the metal layer 205 and the bending region 2012 at the bending region 2012, the adhesive layer between the second supporting layer 1022 and the filling adhesive layer 105, namely the second adhesive layer 62, is omitted, and the step difference between the second supporting layer 1022 and the filling adhesive layer 105 is avoided, so that the supporting strength of the bending region 2012 is increased, and the supporting strength of the display panel 201 in the process is also improved. In addition, by providing the integrated composite layer 203, compared with the existing second support layer 1022 and the filling adhesive layer 105 which need to be adhered to each other, the adhesive layer between the second support layer 1022 and the filling adhesive layer 105 is reduced, so that the adhesion process between the second support layer 1022 and the filling adhesive layer 105 is reduced, and the cost of materials and processes is further reduced.
In addition, the display device 200 may further include a polarizer 206, an optical adhesive layer 207, and a touch panel 208. The polarizer 206, the optical adhesive layer 207 and the touch panel 208 are sequentially stacked on the side of the display panel 201 far away from the supporting layer 202, that is, the polarizer 206 is disposed on the side of the display panel 201 far away from the supporting layer 202, the optical adhesive layer 207 is disposed on the polarizer 206, and the touch panel 208 is disposed on the optical adhesive layer 207, so to speak, the polarizer 206 and the touch panel 208 are bonded by the adhesion of the optical adhesive layer 207.
As can be seen from the above, the display device 200 of the present embodiment includes: the display panel 201, the display panel 201 includes a display area 2011 and a bending area 2012, and the display area 2011 is connected with the bending area 2012; a supporting layer 202, wherein the supporting layer 202 is disposed on one side of the display panel 201 and corresponds to the display area 2011; the composite layer 203, the composite layer 203 is arranged on one side of the display panel 201 and corresponds to the bending region 2012, the composite layer 203 and the supporting layer 202 are positioned on the same side of the display panel 201, and the composite layer 203 is of an integrated structure; when the display panel 201 is in an unbent state, the supporting layer 202 and the composite layer 203 are arranged at intervals, and a step difference exists between the supporting layer 202 and the composite layer 203; when the display panel 201 is in a folded state, the front projection area of the support layer 202 in the display area 2011 and the front projection area of the composite layer 203 in the display area 2011 are partially overlapped. In this embodiment, the composite layer 203 is disposed in the bending region 2012 of the display panel 201, so as to improve the supporting strength of the bending region 2012 of the display panel 201, and the composite layer 203 is an integrated structure, so that the material and manufacturing cost can be reduced.
The embodiment of the application also provides a preparation method of the display device, referring to fig. 6, fig. 6 is a flow chart of the preparation method of the display device provided by the embodiment of the application. The display device may be an actively illuminated display device, such as an OLED display device, micro_led display device, LED display device, or the like.
The preparation method of the display device specifically comprises the following steps:
301. providing a release film layer, a supporting layer, a composite layer, a glue-free filling film layer, a protective film layer and a display panel.
Referring to fig. 7, fig. 7 is a schematic diagram of a third structure of a display device according to an embodiment of the application. In the manufacturing process of the display device, firstly, the supporting layer is attached to one side of the release film layer, then the composite layer is attached to one side of the release film layer, the supporting layer and the composite layer are arranged on the same side of the release film layer, wherein the supporting layer and the composite layer are arranged at intervals, a step difference exists between the supporting layer and the composite layer, then, the step difference between the supporting layer and the composite layer is filled by using the glue-free filling film layer, so that one side of the glue-free filling film layer, which is far away from the supporting layer, and one side of the composite layer, which is far away from the release film layer, are positioned on the same plane, and then, the protective film layer is attached to the plane, on which one side of the glue-free filling film layer is far away from the supporting layer and one side of the composite layer, which is far away from the release film layer, and defoamed and discharged.
The display panel comprises a display area and a bending area, wherein the display area is connected with the bending area, the bending area can bend around the connection part of the display area and the bending area and can bend to the back surface of the display area, so that a part of orthographic projection area of the bending area falls on the display area.
The support layer and the composite layer are respectively attached to the release film layer, the support layer and the composite layer are arranged at intervals, and the support layer and the composite layer have a section difference.
The composite layer is an integrated structure, and the composite layer comprises a first adhesive layer, a material layer and a second adhesive layer, wherein the material layer is arranged between the first adhesive layer and the second adhesive layer. The material of the first adhesive layer is pressure-sensitive adhesive, and the material of the second adhesive layer can also be pressure-sensitive adhesive, wherein the pressure-sensitive adhesive is sensitive adhesive. The material of the material layer is thermoplastic polyester, and the thermoplastic polyester contains polyethylene terephthalate, is also called polyester resin, and is polycondensate of terephthalic acid and ethylene glycol.
302. And removing the release film layer, attaching the support layer to the display area, and attaching the composite layer to the bending area.
In order to realize the lamination of the composite layer and the supporting layer with the display panel, the release film layer is firstly removed, then the supporting layer is attached to one side of the display area of the display panel, and the composite layer is attached to one side of the bending area of the display panel, wherein the composite layer and the supporting layer are positioned on the same side of the display panel.
After the release film layer is removed, the display panel needs to be processed, specifically, glass on one side of the display panel, which is close to the supporting layer, is removed by a laser peeling mode, the supporting layer is attached to a display area after the glass is removed, and the composite layer is attached to a bending area after the glass is removed.
303. And removing the glue-free filling film layer and the protective film layer, and bending the bending region until the orthographic projection region of the support layer in the display region is overlapped with the orthographic projection region of the composite layer in the display region.
The glue-free filling film layer and the protective film layer are removed first, so that the composite layer and the supporting layer are exposed to the outside. In this embodiment, a metal layer and a buffer layer are further provided, the buffer layer is attached to a side of the exposed support layer away from the display area, and the metal layer is attached to a side of the exposed buffer layer away from the support layer.
When the bending region of the display panel is bent to the position, in the front projection region of the display region, of the supporting layer and the position, in the front projection region of the display region, of the composite layer are partially overlapped, one side, away from the bending region, of the composite layer is attached to one side, away from the buffer layer, of the metal layer, so that the bending region of the display panel in the display device is bent to the back surface of the display region, and the lower frame of the flexible display device is reduced.
In the prior art, when the display panel 101 is in an unbent state, a first supporting layer 1021 and a second supporting layer 1022 are respectively disposed on one side of the display area 1011 and one side of the bending area 1012 of the display panel 101, and the thicknesses of the first supporting layer 1021 and the second supporting layer 1022 are the same. When the display panel 101 is in a bending state, a filling adhesive layer 105 is added between the metal layer 104 and the second supporting layer 1022 to achieve bonding for fixing and filling the bending step. However, since the filling adhesive layer 105 and the second supporting layer 1022 are two separate structures, the two structures are directly bonded through the second adhesive layer 62 in the second supporting layer 1022, but three layers of adhesive layers are disposed between the filling adhesive layer 105 and the second supporting layer 1022, the multi-layer adhesive layers can reduce the supporting strength of the bending region 1012, and dislocation is easily caused, so that the risk of glue overflow is increased.
The display panel provided by the embodiment of the application is different from the display panel in the prior art in that: when the display panel is in an unbent state, the supporting layer and the composite layer are arranged at intervals, and a step difference exists between the supporting layer and the composite layer, specifically, the thickness of the composite layer is larger than that of the supporting layer. And when the display panel is in the state of buckling, because the thickness of the composite layer is greater than the thickness of the supporting layer, and the composite layer is of an integrated structure, then the thickness of the composite layer is equivalent to the sum of the thicknesses of the second supporting layer 1022 and the filling adhesive layer 105 in the prior art, so that the thickness of the composite layer can meet the requirement that the composite layer can be directly attached to the metal layer when the display panel is in the state of buckling, and the supporting layer is partially overlapped with the composite layer in the orthographic projection area of the display area, the buckling area of the display panel is buckled to the back of the display area, and the lower frame of the flexible display device is reduced.
It will be appreciated that the integrated composite layer replaces the original combined structure of the second supporting layer 1022 and the filling adhesive layer 105, specifically, the thickness of the first adhesive layer and the first adhesive layer 61 may be the same, the thickness of the second adhesive layer and the third adhesive layer 63 may be the same, and the thickness of the material layers corresponds to the sum of the thicknesses of the second adhesive layer 62, the first material layer 41 and the second material layer 42. By arranging the integrated composite layer, only two layers of adhesive layers are needed to be respectively adhered to the metal layer and the bending region at the bending region, the adhesive layer between the second supporting layer 1022 and the filling adhesive layer 105, namely the second adhesive layer 62, is omitted, and the step difference between the second supporting layer 1022 and the filling adhesive layer 105 is avoided, so that the supporting strength of the bending region is increased, and the supporting strength of the display panel 201 in the process is also improved. In addition, by providing the integrated composite layer, compared with the existing second support layer 1022 and the filling adhesive layer 105 which need to be adhered to each other, the adhesive layer between the second support layer 1022 and the filling adhesive layer 105 is reduced, so that the adhesion process between the second support layer 1022 and the filling adhesive layer 105 is reduced, and the cost of materials and processes is further reduced.
As can be seen from the above, in this embodiment, a release film layer, a supporting layer, a composite layer, a non-adhesive filling film layer, a protective film layer and a display panel are provided, the release film layer is removed, the supporting layer is attached to the display area, and the composite layer is attached to the bending area, and the bending area is bent until the orthographic projection area of the supporting layer in the display area and the orthographic projection area of the composite layer in the display area are partially overlapped, thereby completing the preparation of the display device. In this embodiment, the composite layer is disposed in the bending region of the display panel, so as to improve the supporting strength of the bending region in the display panel, and the composite layer is an integrated structure, so that the material and manufacturing cost can be reduced.
In the foregoing embodiments, the descriptions of the embodiments are emphasized, and for parts of one embodiment that are not described in detail, reference may be made to related descriptions of other embodiments.
The display device, the control method of the display device and the electronic device provided by the embodiments of the present application are described in detail, and specific examples are applied to the description of the principles and the embodiments of the present application, where the description of the above embodiments is only used to help understand the method and the core idea of the present application; meanwhile, as those skilled in the art will vary in the specific embodiments and application scope according to the ideas of the present application, the present description should not be construed as limiting the present application in summary.
Claims (11)
1. A method of manufacturing a display device, comprising:
providing a release film layer, a supporting layer, a composite layer, a glue-free filling film layer, a protective film layer and a display panel after defoamation shipment, wherein the composite layer is of an integrated structure, the display panel comprises a display area and a bending area, the display area is connected with the bending area, the supporting layer and the composite layer are respectively attached to the same side of the release film layer, the supporting layer and the composite layer are arranged at intervals, and the supporting layer and the composite layer have a section difference, then the glue-free filling film layer is used for filling the section difference between the supporting layer and the composite layer, so that one side of the glue-free filling film layer, which is far away from the supporting layer, is far away from the release film layer, is in the same plane, and then the protective film layer is attached to the plane where one side of the glue-free filling film layer, which is far away from the supporting layer, is far away from the release film layer, is located, and shipment is carried out, so that the release film, the support layer, the glue-free filling film layer, the composite layer and the defoamation filling film layer are obtained;
removing the release film layer, removing glass on one side of the display panel, which is close to the support layer, in a laser stripping mode, attaching the support layer to the display area after glass removal, and attaching the composite layer to the bending area after glass removal, wherein the composite layer and the support layer are positioned on the same side of the display panel;
and removing the glue-free filling film layer and the protective film layer, and bending the bending region until the orthographic projection region of the support layer in the display region is partially overlapped with the orthographic projection region of the composite layer in the display region.
2. The method of manufacturing a display device according to claim 1, wherein the method further comprises:
providing a metal layer and a buffer layer;
attaching the buffer layer to one side of the support layer far away from the display area;
and attaching the metal layer to one side of the buffer layer far away from the supporting layer.
3. The method according to claim 2, wherein when the bending region is bent to a position where the forward projection region of the supporting layer in the display region partially overlaps the forward projection region of the composite layer in the display region, a side of the composite layer away from the bending region is attached to a side of the metal layer away from the buffer layer.
4. The method of manufacturing a display device according to claim 1, wherein the method further comprises:
providing a polaroid, an optical adhesive layer and a touch panel;
attaching the polaroid to one side of the display panel far away from the supporting layer;
attaching the optical adhesive layer to one side of the polaroid, which is far away from the display panel;
and attaching the touch panel to one side of the optical adhesive layer far away from the polaroid.
5. The method for manufacturing a display device according to claim 1, wherein the composite layer comprises a first adhesive layer, a material layer and a second adhesive layer, the material layer is arranged between the first adhesive layer and the second adhesive layer, the material of the first adhesive layer is a pressure-sensitive adhesive, the material of the material layer is thermoplastic polyester, and the material of the second adhesive layer is a pressure-sensitive adhesive.
6. A display device, characterized in that the display device is obtained based on the method for manufacturing a display device according to any one of claims 1 to 5, comprising:
the display panel comprises a display area and a bending area, and the display area is connected with the bending area;
the support layer is arranged on one side of the display panel and corresponds to the display area;
the composite layer is arranged on one side of the display panel and corresponds to the bending area, the composite layer and the supporting layer are positioned on the same side of the display panel, and the composite layer is of an integrated structure;
when the display panel is in an unbent state, the supporting layer and the composite layer are arranged at intervals, and the supporting layer and the composite layer have a section difference;
when the display panel is in a bending state, the support layer is partially overlapped with the composite layer in the orthographic projection area of the display area.
7. The display device of claim 6, wherein the composite layer comprises a first glue layer, a material layer, and a second glue layer, the material layer being disposed between the first glue layer and the second glue layer.
8. The display device of claim 7, wherein the material of the first adhesive layer is a pressure sensitive adhesive, the material of the material layer is a thermoplastic polyester, and the material of the second adhesive layer is a pressure sensitive adhesive.
9. The display device according to claim 6, further comprising a metal layer provided on a side of the support layer away from the display panel, wherein a buffer layer is provided between the metal layer and the support layer.
10. The display device of claim 9, wherein a side of the composite layer away from the bending region is bonded to the metal layer when the display panel is in a bent state.
11. The display device according to claim 6, wherein a polarizer, an optical adhesive layer and a touch panel are sequentially stacked on a side of the display panel away from the supporting layer.
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