CN113112917A - Display device and method for manufacturing the same - Google Patents
Display device and method for manufacturing the same Download PDFInfo
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- CN113112917A CN113112917A CN202110380714.XA CN202110380714A CN113112917A CN 113112917 A CN113112917 A CN 113112917A CN 202110380714 A CN202110380714 A CN 202110380714A CN 113112917 A CN113112917 A CN 113112917A
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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
Abstract
The invention provides a display device which comprises a supporting layer, a first protective layer, a display panel and a composite layer. When the composite layer is attached, the first protective layer is torn off, and then the composite layer is attached to the attachment area of the support layer. Therefore, element transfer cannot occur in the adhesive layer of the first protective layer in the attachment area, the bonding force of the composite layer and the display panel binding area cannot be reduced, the film peeling phenomenon cannot occur when the second protective layer is torn off in the bending process, and the bending process yield of the display panel is finally improved.
Description
Technical Field
The invention relates to the technical field of display, in particular to a display device and a preparation method thereof.
Background
With the mature of flexible panel technology, the flexible panel can be produced in mass production, and provides reliable support for the development of foldable products. As shown in fig. 1, to increase the stiffness of the panel, a current screen manufacturer would add a supporting layer 11 on one side of the panel, and when performing the terminal area bending process, a composite material layer 12 (typically including thermoplastic polyester and a glue material) would be attached to the supporting layer 11 to fix the terminal area; as shown in fig. 2, since the support layer protective film 13 is torn off before the composite material layer 12 is attached (the composite material layer 12 is attached on the whole surface), the silicon of the glue material on the support layer protective film 13 is transferred to the surface of the support layer 11. This results in a reduction in the bonding force at the interface between the composite layer 12 and the support layer 11 after the composite layer (stiff) is applied. Therefore, the composite material layer 12 is peeled off when the supporting layer protection film 13 is peeled off, and the terminal region bending process is poor.
Therefore, it is desirable to develop a new display panel to retain the positive effects of the existing display panel and to eliminate the negative effects of the existing display panel.
Disclosure of Invention
The invention provides a novel display device, wherein the first glue layer of the first protective layer is only arranged in the display area, and the area of the first protective layer, which is not attached with the first glue layer, is the attachment area, so that the bonding force between the composite layer and the binding area of the display panel is not reduced.
In order to achieve the above object, the present invention provides a display device including: the display panel is defined with a display area and a bending area, and the bending area is connected with the display area; the supporting layer is arranged on one side of the display panel and corresponds to the display area, and an attaching area and a non-attaching area are defined on the supporting layer; the transfer printing layer is arranged on one side of the supporting layer, which is far away from the display panel, and corresponds to the non-attachment area; the composite layer and the transfer printing layer are arranged on the supporting layer in the same layer, and the composite layer corresponds to the attaching area; and the bending area of the display panel is bent and attached to the composite layer.
Further, the material of the transfer layer includes silicon.
Further, the composite layer includes: a first glue layer; the thermoplastic polyester is attached to the first adhesive layer; and the second adhesive layer is attached to the thermoplastic polyester.
Further, the material of the first adhesive layer comprises pressure-sensitive adhesive; the material of the second adhesive layer comprises pressure-sensitive adhesive.
Further, the display panel includes: a photoresist layer; the back plate is arranged on the photoresist layer; a flexible substrate disposed on the backplate; the driving layer is arranged on the flexible substrate; and the OLED device layer is arranged on the driving layer.
The invention also provides a preparation method of the display device, which comprises the following steps: providing a first protective layer, a supporting layer, a composite layer and a display panel, wherein the first protective layer comprises a first body and a third adhesive layer attached to one side of the first body; the display panel is defined with a display area and a bending area, the bending area is connected with the display area, and the supporting layer is defined with an attaching area and a non-attaching area; attaching the supporting layer to one side of the third adhesive layer, which is far away from the first body, wherein the third adhesive layer corresponds to a non-attachment area; removing the first protective layer, and transferring the third adhesive layer in the non-attaching area to form a transfer printing layer; attaching the composite layer and the transfer printing layer to the attachment area on the support layer in the same layer, wherein a second protective layer is arranged on the composite layer; and removing the second protective layer, and bending and attaching the bending area of the display panel to the composite layer.
Further, the material of the first body comprises polypropylene fibers; the material of the third adhesive layer comprises pressure-sensitive adhesive.
Further, the composite layer includes: a first glue layer; the thermoplastic polyester is attached to the first adhesive layer; and the second adhesive layer is attached to the thermoplastic polyester.
Further, the second protective layer includes: the fourth adhesive layer is attached to the composite layer; the second body is attached to the fourth adhesive layer.
Further, the material of the second body comprises polypropylene fibers; the material of the fourth adhesive layer comprises pressure-sensitive adhesive.
The invention has the beneficial effects that: the invention provides a display device and a preparation method thereof. When the composite layer is attached, the first protective layer is torn off, and then the composite layer is attached to the attachment area of the support layer. Therefore, element transfer cannot occur in the adhesive layer of the first protective layer in the attachment area, the bonding force of the composite layer and the display panel binding area cannot be reduced, the film peeling phenomenon cannot occur when the second protective layer is torn off in the bending process, and the bending process yield of the display panel is finally improved.
Drawings
The technical solution and other advantages of the present invention will become apparent from the following detailed description of specific embodiments of the present invention, which is to be read in connection with the accompanying drawings.
FIG. 1 is a partial schematic view of a prior art display panel attachment structure;
FIG. 2 is a partial schematic view of a prior art display panel attachment structure;
fig. 3 is a schematic structural diagram of a display panel according to an embodiment of the present invention after being bent;
fig. 4 is a schematic structural diagram of a display panel according to an embodiment of the invention
Fig. 5 is a partial schematic view of a display panel attaching structure according to an embodiment of the invention;
fig. 6 is a partial schematic view of a display panel attaching structure according to an embodiment of the invention.
Reference numerals
A support layer 101; an attachment area 1011; a non-attachment region 1012;
a first protective layer 102; a third glue layer 1021; a first body 1022;
a display panel 103; a display area 1031; a bend region 1032; a photoresist layer 1033; a back plate 1034; a flexible substrate 1035; a drive layer 1036; OLED device layer 1037;
a composite layer 104;
a second protective layer 105; and a transfer layer 106.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 3, the present invention provides a display device including: support layer 101, display panel 103 composite layer 104, and transfer layer 106.
The display panel 103 defines a display region 1031 and a bending region 1032, and the bending region 1032 connects the display region 1031
The support layer 101 is disposed on one side of the display panel 103 and corresponds to the display area 1031, and the support layer 101 defines an attachment area 1011 and a non-attachment area 1012.
The transfer layer 106 is disposed on a side of the support layer 101 away from the display panel 103 and corresponds to the non-attachment region 1012; the material of the transfer layer 106 includes silicon, in this embodiment, the transfer layer 106 is formed by a protective layer of the support layer 101 contacting the surface of the support layer 101, and the protective layer of the support layer 101 is processed without glue in the attachment region 1011, so that the transfer layer 106 is formed in the non-attachment region 1012 and no transfer layer is formed in the attachment region 1011, and thus the bonding force between the support layer 101 and the composite layer 104 is not affected.
The composite layer 104 and the transfer layer 106 are disposed on the support layer in the same layer, and the composite layer 104 corresponds to the attachment region. The composite layer 104 includes: the adhesive comprises a first adhesive layer, thermoplastic polyester and a second adhesive layer; the thermoplastic polyester is attached to the second adhesive layer; the third adhesive layer is attached to the thermoplastic polyester. The material of the first adhesive layer comprises pressure-sensitive adhesive; the material of the second adhesive layer comprises pressure-sensitive adhesive.
The bending region 1032 of the display panel 103 is bent and attached to the composite layer 104. As shown in fig. 3, the display panel 103 includes an OLED display panel. The display panel 103 includes: photoresist layer 1033, backplane 1034, flexible substrate 1035, drive layer 1036, and OLED device layer 1037.
The back plate 1034 is disposed on the photoresist layer 1033; the flexible substrate 1035 is disposed on the back plate 1034; the driver layer 1036 is disposed on the flexible substrate 1035; the OLED device layer 1037 is disposed on the driving layer 1036.
The invention provides a display panel, wherein the transfer printing layer 106 is formed by the contact of the protective layer of the support layer 101 and the surface of the support layer 101, the protective layer of the support layer 101 is subjected to glue-free treatment in the attachment area 1011, the transfer printing layer 106 is further formed in the non-attachment area 1012, and the transfer printing layer is not arranged in the attachment area 1011, so that the bonding force between the support layer 101 and the composite layer 104 is not influenced.
The invention also provides a preparation method of the display device, which is used for preparing the display device and comprises the following steps S1-S3.
S1, as shown in fig. 5 and 6, providing a first protective layer 102, a support layer 101, a composite layer 104, and a display panel 103, where the first protective layer 102 includes a first body 1022 and a third glue layer 1021 attached to one side of the first body 1022; the material of the first body 1022 includes polypropylene fibers; and the material of the third glue layer 1021 comprises a pressure sensitive glue. The display panel 103 defines a display region 1031 and a bending region 1032, the bending region 1032 is connected to the display region 1031, and the support layer 101 defines an attaching region 1011 and a non-attaching region 1012.
S2, attaching the support layer 101 to a side of the third adhesive layer 1021 away from the first body 1022, where the third adhesive layer 1021 corresponds to the non-attachment region 1012.
S3, removing the first protection layer 102, and transferring the third glue layer 1021 in the non-attaching region 1012 to form a transfer layer 106.
S4, attaching the composite layer 104 and the transfer layer 106 to the attachment region 1011 on the support layer 101 in the same layer, wherein a second passivation layer 105 is disposed on the composite layer 104. The second protective layer 105 includes: a fourth glue layer and a second body. The fourth adhesive layer is attached to the composite layer; the third body is attached to the fourth adhesive layer. The material of the second body comprises polypropylene fibers; the material of the fourth adhesive layer comprises pressure-sensitive adhesive. The composite layer 104 is attached to the support layer 101 and corresponds to an attachment region; when the composite layer 104 is attached, the first protective layer 102 is firstly torn off, and then the composite layer 104 is attached to the attachment region of the support layer 101. Thus, the adhesive layer of the first protection layer 102 will not generate element (silicon) transfer in the attachment region, and will not cause the bonding force between the composite layer 104 and the bonding region of the display panel 103 to be reduced, as shown in fig. 5, when the display panel is bent, the peeling phenomenon of the film layer will not occur when the second protection layer 105 is torn off, and the yield of the bending process of the display panel 103 is finally improved.
S5, removing the second passivation layer 105, and bending the bending region 1032 of the display panel 103 to attach to the composite layer 104 (as shown in fig. 3).
The invention further provides a preparation method of the display device, the third glue layer 1021 of the first protection layer 102 is only arranged in the display area 1031, and the area of the first protection layer 102 where the third glue layer 1021 is not attached is an attachment area. When the composite layer 104 is attached, the first protective layer 102 is firstly torn off, and then the composite layer 104 is attached to the attachment region of the support layer 101. Therefore, the element transfer of the glue layer of the first protection layer 102 will not occur in the attachment region, and the bonding force between the composite layer 104 and the display panel bonding region will not be reduced, so that the peeling phenomenon of the film layer will not occur when the second protection layer 105 is torn off during bending, and the yield of the bending process of the display panel is finally improved.
The principle and the implementation of the present invention are explained in the present text by applying specific examples, and the above description of the examples is only used to help understanding the technical solution and the core idea of the present invention; those of ordinary skill in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A display device, comprising:
the display panel is defined with a display area and a bending area, and the bending area is connected with the display area;
the supporting layer is arranged on one side of the display panel and corresponds to the display area, and an attaching area and a non-attaching area are defined on the supporting layer;
the transfer printing layer is arranged on one side of the supporting layer, which is far away from the display panel, and corresponds to the non-attachment area; and
the composite layer and the transfer printing layer are arranged on the supporting layer in the same layer, and the composite layer corresponds to the attaching area;
and the bending area of the display panel is bent and attached to the composite layer.
2. The display device of claim 1,
the material of the transfer layer includes silicon.
3. The display device of claim 1, wherein the composite layer comprises:
a first glue layer;
the thermoplastic polyester is attached to the first adhesive layer; and
and the second adhesive layer is attached to the thermoplastic polyester.
4. The display device of claim 3,
the material of the first adhesive layer comprises pressure-sensitive adhesive;
the material of the second adhesive layer comprises pressure-sensitive adhesive.
5. The display device of claim 1,
the display panel includes:
a photoresist layer;
the back plate is arranged on the photoresist layer;
a flexible substrate disposed on the backplate;
the driving layer is arranged on the flexible substrate; and
and the OLED device layer is arranged on the driving layer.
6. A method for manufacturing a display device, comprising the steps of,
providing a first protective layer, a support layer, a composite layer and a display panel, wherein the first protective layer comprises
The first adhesive layer is attached to one side of the first body; the display panel is defined with a display area and a bending area, the bending area is connected with the display area, and the supporting layer is defined with an attaching area and a non-attaching area;
attaching the supporting layer to one side of the third adhesive layer, which is far away from the first body, wherein the third adhesive layer corresponds to a non-attachment area;
removing the first protective layer, and transferring the third adhesive layer in the non-attaching area to form a transfer printing layer;
attaching the composite layer and the transfer printing layer to the attachment area on the support layer in the same layer, wherein a second protective layer is arranged on the composite layer;
and removing the second protective layer, and bending and attaching the bending area of the display panel to the composite layer.
7. The method of manufacturing a display device according to claim 6,
the material of the first body comprises polypropylene fibers;
the material of the third adhesive layer comprises pressure-sensitive adhesive.
8. The method of manufacturing a display device according to claim 6, wherein the composite layer comprises:
a first glue layer;
the thermoplastic polyester is attached to the first adhesive layer; and
and the second adhesive layer is attached to the thermoplastic polyester. .
9. The method of manufacturing a display device according to claim 6,
the second protective layer includes:
the fourth adhesive layer is attached to the composite layer;
the second body is attached to the fourth adhesive layer.
10. The method of manufacturing a display device according to claim 6,
the material of the second body comprises polypropylene fibers;
the material of the fourth adhesive layer comprises pressure-sensitive adhesive.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110380714.XA CN113112917B (en) | 2021-04-09 | 2021-04-09 | Display device and method for manufacturing the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110380714.XA CN113112917B (en) | 2021-04-09 | 2021-04-09 | Display device and method for manufacturing the same |
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| Publication Number | Publication Date |
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| CN113112917A true CN113112917A (en) | 2021-07-13 |
| CN113112917B CN113112917B (en) | 2022-04-26 |
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| CN202110380714.XA Active CN113112917B (en) | 2021-04-09 | 2021-04-09 | Display device and method for manufacturing the same |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114373394A (en) * | 2022-01-20 | 2022-04-19 | 武汉华星光电半导体显示技术有限公司 | Display device and manufacturing method thereof |
| CN114373395A (en) * | 2022-01-24 | 2022-04-19 | 武汉华星光电半导体显示技术有限公司 | Display device and manufacturing method thereof |
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| CN113112917B (en) | 2022-04-26 |
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