CN111668275A - Display panel, manufacturing method thereof and display device - Google Patents
Display panel, manufacturing method thereof and display device Download PDFInfo
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- CN111668275A CN111668275A CN202010567447.2A CN202010567447A CN111668275A CN 111668275 A CN111668275 A CN 111668275A CN 202010567447 A CN202010567447 A CN 202010567447A CN 111668275 A CN111668275 A CN 111668275A
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 31
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 77
- 239000003292 glue Substances 0.000 claims abstract description 63
- 239000000758 substrate Substances 0.000 claims abstract description 58
- 239000000853 adhesive Substances 0.000 claims abstract description 51
- 230000001070 adhesive effect Effects 0.000 claims abstract description 51
- 239000002346 layers by function Substances 0.000 claims abstract description 49
- 239000010410 layer Substances 0.000 claims abstract description 39
- 238000005452 bending Methods 0.000 claims abstract description 35
- 238000000034 method Methods 0.000 claims description 28
- 239000011248 coating agent Substances 0.000 claims description 18
- 238000000576 coating method Methods 0.000 claims description 18
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 15
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 11
- 239000002245 particle Substances 0.000 claims description 10
- 230000005611 electricity Effects 0.000 claims description 6
- 238000000016 photochemical curing Methods 0.000 claims description 6
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 5
- 229910052759 nickel Inorganic materials 0.000 claims description 5
- 230000009993 protective function Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 9
- 238000010586 diagram Methods 0.000 description 5
- 239000004642 Polyimide Substances 0.000 description 4
- 229920000139 polyethylene terephthalate Polymers 0.000 description 4
- 239000005020 polyethylene terephthalate Substances 0.000 description 4
- 229920001721 polyimide Polymers 0.000 description 4
- 208000037656 Respiratory Sounds Diseases 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000001723 curing Methods 0.000 description 3
- 230000001965 increasing effect Effects 0.000 description 3
- 230000002787 reinforcement Effects 0.000 description 3
- -1 Polyethylene terephthalate Polymers 0.000 description 2
- 238000005034 decoration Methods 0.000 description 2
- 238000005538 encapsulation Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000002390 adhesive tape Substances 0.000 description 1
- 239000011889 copper foil Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
-
- 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
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K9/00—Screening of apparatus or components against electric or magnetic fields
- H05K9/0007—Casings
- H05K9/006—Casings specially adapted for signal processing applications, e.g. CATV, tuner, antennas amplifier
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
- H10K59/1201—Manufacture or treatment
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
- H10K59/126—Shielding, e.g. light-blocking means over the TFTs
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
The embodiment of the application provides a display panel, a manufacturing method thereof and a display device. The display panel comprises a substrate, a functional layer and a conductive auxiliary reinforcing adhesive, wherein the substrate comprises a first part and a second part which are separated from each other; the functional layer comprises a display part, a binding part and a bending part connected between the display part and the binding part, the display part covers the first part, the binding part covers the second part, the bending part comprises a plurality of signal wires, the bending part is bent towards one side far away from the light-emitting surface, and the light-emitting surface is the surface of the display part far away from the first part; the conductive reinforcing glue is attached to one side, far away from the substrate, of the functional layer, and at least covers the bent part and is grounded. In the display panel in this embodiment, the grounded conductive reinforcing adhesive can not only improve the strength of the bent portion of the protective function layer, but also can be tightly attached to the bent portion, so that signals on the signal lines of the bent portion can be effectively shielded.
Description
Technical Field
The application relates to the technical field of display, in particular to a display panel, a manufacturing method thereof and a display device.
Background
In order to narrow the lower frame, the current mobile phone using the organic light emitting display panel usually uses a display panel with a bent lower frame. When the organic light emitting display panel is bent, the display panel is very fragile, and the linear reinforcing glue is required to be added in the bending area to improve the strength of the bending area of the display panel, so that the purpose of protecting the circuit of the bending area is achieved. With the application of 5G, the more obvious the electromagnetic interference has on the high-frequency signal, the higher and higher electromagnetic shielding effect of the circuit in the mobile phone is required.
However, because the bending region is very weak, the electromagnetic shielding of the current bending region is increased at the position of the corresponding middle frame, but the electromagnetic shielding structure increased at the middle frame has a poor shielding effect on the bending region.
Disclosure of Invention
The present application provides a display panel, a manufacturing method thereof and a display device, aiming at the disadvantages of the existing methods, so as to solve the technical problem in the prior art that the signal shielding effect of the bending region in the organic light emitting display panel is poor.
In a first aspect, an embodiment of the present application provides a display panel, including:
a substrate including a first portion and a second portion separated from each other;
the functional layer comprises a display part, a binding part and a bending part connected between the display part and the binding part, the display part covers the first part, the binding part covers the second part, the bending part comprises a plurality of signal wires, the bending part is bent towards one side away from a light-emitting surface, and the light-emitting surface is the surface of the display part away from the first part;
the electric conductivity is assisted and is glued, attached keep away from in the functional layer one side of substrate, electric conductivity is assisted and is glued and is covered at least bending portion and ground connection.
Optionally, the display panel further comprises: fix the part is kept away from the flexible line way board of second part one side is tied up, the flexible line way board includes ground structure, electrically conductive reinforcing glue with ground structure electricity is connected.
Optionally, the display panel further comprises: the flexible circuit board is attached to the signal shielding layer far away from one side of the binding part, the signal shielding layer is electrically connected with the grounding structure, and the conductive reinforcing glue is connected with the signal shielding layer.
Optionally, the conductive auxiliary adhesive further covers a side of the flexible circuit board away from the binding portion, so that the conductive auxiliary adhesive is electrically connected to the grounding structure.
Optionally, the conductive reinforcing glue includes a linear reinforcing glue and conductive particles uniformly distributed in the linear reinforcing glue; the material of the linear reinforcing adhesive comprises light-cured adhesive, and the conductive particles comprise one or more of nickel powder, copper powder, silver powder and nickel-coated copper powder.
In a second aspect, an embodiment of the present application provides a display device, which includes the display panel described above.
In a third aspect, an embodiment of the present application provides a method for manufacturing a display panel, where the method for manufacturing the display panel includes:
providing a display panel to be bent, wherein the display panel to be bent comprises a substrate and a functional layer positioned on one side of the substrate, the functional layer comprises a display part, a binding part and a part to be bent, the part to be bent is connected between the display part and the binding part, and the part to be bent comprises a plurality of signal lines;
coating conductive reinforcing glue on one side of the functional layer, which is far away from the substrate, and grounding the conductive reinforcing glue, wherein the orthographic projection of the conductive reinforcing glue on the substrate at least covers the orthographic projection of the part to be bent on the substrate;
removing the substrate covered by the portion to be bent so that only a first portion covered by the display portion and a second portion covered by the binding portion remain on the substrate;
and bending the part to be bent to one side departing from the light-emitting surface to obtain the bent display panel, wherein the light-emitting surface is the surface of the display part, which is far away from the first part.
Optionally, the manufacturing method of the display panel further includes: before the conductive auxiliary adhesive is coated, a flexible circuit board is provided and is fixed on one side, away from the second part, of the binding part, and the flexible circuit board comprises a grounding structure; coating conductive reinforcing glue on one side of the functional layer, which is far away from the substrate, and grounding the conductive reinforcing glue, wherein the method comprises the following steps: and coating the conductive reinforcing glue on one side of the functional layer, which is far away from the substrate, and electrically connecting the conductive reinforcing glue with the grounding structure of the flexible circuit board.
Optionally, coating the conductive auxiliary adhesive on a side of the functional layer away from the substrate, and electrically connecting the conductive auxiliary adhesive with the ground structure of the flexible circuit board, includes: coating the conductive reinforcing glue on one side of the functional layer, which is far away from the substrate, and carrying out photocuring on the conductive reinforcing glue; the flexible circuit board is kept away from the attached signal shielding layer of one side of functional layer, the signal shielding layer with ground structure electricity is connected, the signal shielding layer still covers at least part the gluey so that is assisted to electric conductivity the signal shielding layer with the gluey electricity of electric conductivity is assisted and is connected.
Optionally, coating the conductive auxiliary adhesive on a side of the functional layer away from the substrate, and electrically connecting the conductive auxiliary adhesive with the ground structure of the flexible circuit board, includes: coating the conductive reinforcing glue on one side of the functional layer, which is far away from the substrate, wherein the conductive reinforcing glue covers the part to be bent and the flexible circuit board; and carrying out photocuring on the conductive reinforcing glue, and electrically connecting the cured conductive reinforcing glue with the grounding structure.
The technical scheme provided by the embodiment of the application has the following beneficial technical effects:
the display panel, its manufacturing method and display device that this application embodiment provided, at the attached electric conductivity of the part of buckling of functional layer and assist the glue, electric conductivity is assisted the glue and can be promoted the intensity of the part of buckling of protection functional layer to prevent that the part of buckling from producing the crackle and influencing display panel's performance, simultaneously, electric conductivity is assisted the glue and is grounded, and electric conductivity is assisted the glue and is closely laminated the part of buckling, can shield the signal on the signal line of the part of buckling, prevent signal interference.
Additional aspects and advantages of the present application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the present application.
Drawings
The foregoing and/or additional aspects and advantages of the present application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic structural diagram of a display panel according to an embodiment of the present disclosure;
fig. 2 is a schematic structural diagram of a part of a display panel according to an embodiment of the present disclosure;
fig. 3 is a partial schematic structural diagram of another display panel provided in an embodiment of the present application;
fig. 4 is a partial schematic structural diagram of another display panel provided in the embodiment of the present application;
fig. 5 is a schematic diagram of a frame structure of a display device according to an embodiment of the present disclosure;
fig. 6 is a schematic flowchart illustrating a manufacturing method of a display panel according to an embodiment of the present disclosure;
FIG. 7 is a flowchart illustrating a step S1 of the method for manufacturing the display panel shown in FIG. 6;
FIG. 8 is a flowchart illustrating a step S2 in the method for manufacturing the display panel shown in FIG. 6;
FIG. 9 is a flowchart illustrating a step S3 of the method for manufacturing the display panel shown in FIG. 6;
FIG. 10 is a flowchart illustrating a step S4 of the method for manufacturing the display panel shown in FIG. 6;
fig. 11 is a process flow chart of attaching a flexible circuit board in a method for manufacturing a display panel according to an embodiment of the present disclosure;
fig. 12 is a process flow chart illustrating an electrical connection between a conductive reinforcing adhesive and a grounding structure on a flexible printed circuit board in a method for manufacturing a display panel according to an embodiment of the present disclosure;
fig. 13 is a schematic flowchart of step S2 in the method for manufacturing the display panel shown in fig. 6;
fig. 14 is another schematic flow chart of step S2 in the manufacturing method of the display panel shown in fig. 6.
Reference numerals:
1-substrate, 11-first portion; 12-a second part;
2-a functional layer; 21-a display section; 22-a bent portion; 23-a binding moiety;
3-conductive auxiliary reinforcing glue;
4-a flexible circuit board; 41-a ground structure;
5-signal shielding layer.
Detailed Description
Reference will now be made in detail to the present application, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar parts or parts having the same or similar functions throughout. In addition, if a detailed description of the known art is not necessary for illustrating the features of the present application, it is omitted. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present application and are not to be construed as limiting the present application.
It will be understood by those within the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
As used herein, the singular forms "a", "an", "the" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
Because the bending area of the organic light-emitting display panel is very fragile, the electromagnetic shielding structure of the current bending area is added at the position of the corresponding middle frame, and the inventor of the application finds that the current electromagnetic shielding structure cannot be attached to the bending area of the display panel, so that the shielding effect is poor.
The application provides a display panel, a manufacturing method thereof and a display device, which aim to solve the above technical problems in the prior art.
The following describes the technical solutions of the present application and how to solve the above technical problems with specific embodiments.
An embodiment of the present application provides a display panel, as shown in fig. 1, the display panel provided in this embodiment includes:
a substrate 1 comprising a first portion 11 and a second portion 12 separated from each other. Specifically, the substrate 1 may be a flexible substrate, which may be a Polyimide (PI) film or a Polyethylene terephthalate (PET) film; the rigid substrate may be a glass substrate.
The functional layer 2 includes a display portion 21, a binding portion 23, and a bending portion 22 connected between the display portion 21 and the binding portion 23, the display portion 21 covers the first portion 11, the binding portion 23 covers the second portion 12, the bending portion 22 includes a plurality of signal lines (not shown in the figure), the bending portion 22 is bent toward a side away from a light exit surface, and the light exit surface is a surface of the display portion 21 away from the first portion 11.
Specifically, in the display panel in the bent state, the display portion 21 is located on the side of the first portion 11 away from the second portion 12, and the binding portion 23 is located on the side of the second portion 12 away from the first portion 11.
Specifically, the functional layer 2 refers to a plurality of film layers formed on the substrate 1, and these film layers are used to form circuits including a pixel driving circuit, a gate driving circuit, and the like, and devices having specific functions such as an organic light emitting unit, an encapsulation structure, and the like.
And the conductive reinforcing glue 3 is attached to one side, far away from the substrate 1, of the functional layer 2, and the conductive reinforcing glue 3 at least covers the bent part 22 and is grounded.
In the present application, the "display portion" corresponds to the functional layer of the display region, the "bending portion" corresponds to the functional layer of the bending region, and the "binding portion" corresponds to the functional layer of the binding region.
The display panel that this embodiment provided, the attached electric conductivity of the bending part 22 of functional layer 2 is assisted and is glued 3, and electric conductivity is assisted and is glued 3 and can be promoted the intensity of the bending part 22 of protective layer 2 to prevent that bending part 22 from producing the crackle and influence display panel's performance, and simultaneously, electric conductivity is assisted and is glued 3 and ground connection, and electric conductivity is assisted and is glued 3 and closely laminate bending part 22, can shield the signal on bending part 22's the signal line, prevents to take place signal interference.
Further, as shown in fig. 1, the conductive reinforcement paste 3 includes a linear reinforcement paste and conductive particles uniformly distributed in the linear reinforcement paste. Specifically, the material of the linear reinforcing adhesive comprises a light-cured adhesive, and the conductive particles comprise one or more of nickel powder, copper powder, silver powder and nickel-coated copper powder.
In the display panel provided by the embodiment, the conductive reinforcing adhesive 3 is formed by using linear reinforcing adhesives such as a light-curing adhesive as a matrix and using nickel powder, copper powder, silver powder and nickel-coated copper powder as conductive particles, and the curing process is simple and suitable for enhancing the strength of the bent portion 22, and the conductive performance is good, so that the display panel has a good signal shielding effect.
Optionally, as shown in fig. 2, the display panel provided in this embodiment further includes a flexible printed circuit 4 fixed on a side of the binding portion 23 away from the first portion 11, the flexible printed circuit 4 includes a grounding structure 41, and the conductive auxiliary adhesive 3 is electrically connected to the grounding structure 41.
In the display panel shown in fig. 2, since the bending portion 22 is adjacent to the binding portion 23, and the flexible printed circuit 4 bound to the binding portion 23 is usually provided with the grounding structure 41, the conductive auxiliary strength adhesive 3 is electrically connected to the grounding structure 41, which not only can obtain a good electrical connection effect, but also has low connection difficulty.
Optionally, as shown in fig. 3, the display panel provided in this embodiment further includes: the signal shielding layer 5 attached to one side of the flexible circuit board 4, which is far away from the binding part 23, is electrically connected with the grounding structure 41, and the signal shielding layer 5 covers at least part of the conductive reinforcing glue 3 so that the signal shielding layer 5 is electrically connected with the conductive reinforcing glue 3.
Specifically, the signal shielding layer 5 can be directly attached to the flexible circuit board 4 by adopting a copper foil conductive adhesive tape, so that the attaching process is simple, and the signal shielding effect is good.
In the display panel shown in fig. 3, since the conductive auxiliary adhesive 3 is electrically connected to the signal shielding layer 5, the conductive auxiliary adhesive 3 can be grounded through the signal shielding layer 5, and in the prior art, the signal shielding layer 5 needs to be attached to the flexible circuit board 4 to shield signals on the flexible circuit board 4, so that the signals of the bent portion 22 can be shielded without adding process steps.
Alternatively, as shown in fig. 4, in the display panel provided in this embodiment, the conductive auxiliary adhesive 3 further covers a side of the flexible printed circuit board 4 away from the binding portion 23, so that the conductive auxiliary adhesive 3 is electrically connected to the grounding structure 41.
In the display panel shown in fig. 4, since the conductive reinforcing adhesive 3 also covers the flexible wiring board 4, the conductive reinforcing adhesive 3 is grounded by being in direct contact with the grounding structure 41 on the flexible wiring board 4; moreover, the conductive reinforcing adhesive 3 covering the flexible circuit board 4 can also shield the signal on the flexible circuit board 4, so that the signal shielding layer 5 does not need to be attached to the flexible circuit board 4, namely, the steps of attaching the signal shielding layer 5 to the flexible circuit board 4 can be reduced while shielding the signal of the bent part 22.
Based on the same inventive concept, an embodiment of the present application further provides a display device, as shown in fig. 5, the display device provided in the embodiment includes the display panel in the above embodiment, and has the beneficial effects of the display panel in the above embodiment, which are not described herein again.
Further, as shown in fig. 5, the display device provided in this embodiment further includes a driving chip, a power supply, and the like, specifically, the driving chip may be fixed on the flexible circuit board 4 to provide a driving signal for the display panel, and the power supply provides power for the display panel.
Based on the same inventive concept, an embodiment of the present application further provides a manufacturing method of a display panel, as shown in fig. 6, the manufacturing method of the display panel provided by the embodiment includes:
s1: a display panel to be bent is provided. As shown in fig. 7, the display panel to be bent includes a substrate 1 and a functional layer 2 on one side of the substrate 1, the functional layer 2 includes a display portion 21, a binding portion 23, and a portion-to-be-bent 22 'connected between the display portion 21 and the binding portion 23, and the portion-to-be-bent 22' includes a plurality of signal lines (not shown in the figure).
Specifically, the substrate 1 may be a flexible substrate 1 or a rigid substrate 1, and the flexible substrate 1 may be a Polyimide (PI) film or a Polyethylene terephthalate (PET) film; the rigid substrate 1 may be a glass substrate 1.
Specifically, the functional layer 2 refers to a plurality of film layers formed on the substrate 1, and these film layers are used to form circuits including a pixel driving circuit, a gate driving circuit, and the like, and devices having specific functions such as an organic light emitting unit, an encapsulation structure, and the like.
S2: coating conductive auxiliary glue 3 on one side of the functional layer 2, which is far away from the substrate 1, grounding the conductive auxiliary glue 3, and covering the orthographic projection of the cured conductive auxiliary glue 3 on the substrate 1 at least on the part 22' to be bent on the substrate 1.
Specifically, the conductive reinforcing paste 3 includes a linear reinforcing paste and conductive particles uniformly distributed in the linear reinforcing paste. Specifically, the material of the linear reinforcing adhesive comprises a light-cured adhesive, and the conductive particles comprise one or more of nickel powder, copper powder, silver powder and nickel-coated copper powder. When the conductive auxiliary strength adhesive 3 is prepared, only the conductive particles need to be uniformly doped in the liquid linear auxiliary strength adhesive.
S3: the substrate 1 covered by the portion to be bent 22' is removed so that only the first portion 11 covered by the display portion 21 and the second portion 12 covered by the bonding portion 23 remain on the substrate 1. Refer to fig. 9.
S4: the portion 22' to be bent is bent toward a side away from the light-emitting surface, which is a surface of the display portion away from the first portion, to obtain a bent display panel. Referring to fig. 10 and fig. 1, the portion to be bent 22' is a bent portion 22 of the bent display panel, in the bent display panel, the display portion 21 is located on a side of the first portion 11 away from the second portion 12, and the binding portion 23 is located on a side of the second portion 12 away from the first portion 11.
In the manufacturing method of the display panel provided by this embodiment, the conductive reinforcing glue 3 is formed on the portion 22' to be bent of the functional layer 2, the conductive reinforcing glue 3 can improve the strength of the bent portion 22 of the protective functional layer 2, so as to prevent the bent portion 22 from cracking and affecting the performance of the display panel, meanwhile, the conductive reinforcing glue 3 is grounded, and the conductive reinforcing glue 3 is tightly attached to the bent portion 22, so that signals on the signal lines of the bent portion 22 can be effectively shielded, and signal interference can be prevented.
Optionally, as shown in fig. 11 and 12, the method for manufacturing a square display panel provided in this embodiment further includes: prior to step S2, the flexible wiring board 4 is provided, and the flexible wiring board 4 is fixed to the side of the binding portion 23 away from the second portion 12, the flexible wiring board 4 including the ground structure 41. At this time, step S2 includes: and coating the conductive reinforcing glue 3 on one side of the functional layer 2, which is far away from the substrate 1, and electrically connecting the conductive reinforcing glue 3 with the grounding structure 41 of the flexible circuit board.
In the manufacturing method of the display panel provided by this embodiment, the conductive auxiliary adhesive 3 is electrically connected to the grounding structure 41, and since the bending portion 22 is adjacent to the binding portion 23, and the grounding structure 41 is usually disposed on the flexible circuit board 4 bound to the binding portion 23, not only a good electrical connection effect can be obtained, but also the connection difficulty is low.
Further, the electrically conductive auxiliary strength adhesive 3 and the grounding structure 41 can be electrically connected in different ways, which will be described in detail below.
Optionally, referring to fig. 13 and fig. 3, in the manufacturing method of the display panel provided in this embodiment, step S2 includes:
s201: and coating the conductive auxiliary adhesive 3 on one side of the functional layer 2, which is far away from the substrate 1, and carrying out photocuring on the conductive auxiliary adhesive 3. Specifically, the conductive reinforcing adhesive 3 may be cured by an ultraviolet curing method.
S202: the flexible circuit board is attached with a signal shielding layer 5 on one side far away from the functional layer 2, the signal shielding layer 5 is electrically connected with the grounding structure 41, and the signal shielding layer 5 also covers at least part of the conductive reinforcing glue 3 so that the conductive reinforcing glue 3 is electrically connected with the signal shielding layer 5.
That is, in the present embodiment, the signal shielding layer 5 serves as a conductive medium for realizing the conductive auxiliary strength adhesive 3 and the ground structure 41.
In the manufacturing method of the display panel provided in this embodiment, the conductive auxiliary adhesive 3 is electrically connected to the signal shielding layer 5, so that the conductive auxiliary adhesive 3 can be grounded through the signal shielding layer 5, and in the prior art, the signal shielding layer 5 needs to be attached to the flexible circuit board 4 to shield signals on the flexible circuit board 4, so that signals of the bent portion 22 can be shielded without increasing process steps.
Optionally, referring to fig. 14 and fig. 4, in the manufacturing method of the display panel provided in this embodiment, step S2 includes:
s201': and coating conductive auxiliary glue 3 on one side of the functional layer 2, which is far away from the substrate 1, wherein the conductive auxiliary glue 3 covers the part 22' to be bent and the flexible circuit board 4.
S202': and (3) carrying out photocuring on the conductive reinforcing glue 3, wherein the cured conductive reinforcing glue 3 is electrically connected with the grounding structure 41.
That is, in the present embodiment, when the conductive reinforcing adhesive 3 is coated, not only the conductive reinforcing adhesive 3 is coated on the portion 22' to be bent, but also the conductive reinforcing adhesive 3 is coated on the flexible circuit board 4, and since the cured conductive reinforcing adhesive 3 has stable conductive performance, the cured conductive reinforcing adhesive 3 is electrically connected to the grounding structure 41.
In the manufacturing method of the display panel provided in this embodiment, since the conductive reinforcing adhesive 3 also covers the flexible printed circuit 4, the conductive reinforcing adhesive 3 is grounded by directly contacting the grounding structure 41 on the flexible printed circuit 4; moreover, the conductive reinforcing adhesive 3 covering the flexible circuit board 4 can also shield the signal on the flexible circuit board 4, so that the signal shielding layer 5 does not need to be attached to the flexible circuit board 4, namely, the steps of attaching the signal shielding layer 5 to the flexible circuit board 4 can be reduced while shielding the signal of the bent part 22.
By applying the embodiment of the application, at least the following beneficial effects can be realized:
the display panel, its manufacturing method and display device that this application embodiment provided, at the attached electric conductivity of the part of buckling of functional layer and assist the glue, electric conductivity is assisted the glue and can be promoted the intensity of the part of buckling of protection functional layer to prevent that the part of buckling from producing the crackle and influencing display panel's performance, simultaneously, electric conductivity is assisted the glue and is grounded, and electric conductivity is assisted the glue and is closely laminated the part of buckling, can shield the signal on the signal line of the part of buckling, prevent signal interference.
Those of skill in the art will appreciate that the various operations, methods, steps in the processes, acts, or solutions discussed in this application can be interchanged, modified, combined, or eliminated. Further, other steps, measures, or schemes in various operations, methods, or flows that have been discussed in this application can be alternated, altered, rearranged, broken down, combined, or deleted. Further, steps, measures, schemes in the prior art having various operations, methods, procedures disclosed in the present application may also be alternated, modified, rearranged, decomposed, combined, or deleted.
In the description of the present application, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present application.
The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless otherwise specified.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
In the description herein, particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.
It should be understood that, although the steps in the flowcharts of the figures are shown in order as indicated by the arrows, the steps are not necessarily performed in order as indicated by the arrows. The steps are not performed in the exact order shown and may be performed in other orders unless explicitly stated herein. Moreover, at least a portion of the steps in the flow chart of the figure may include multiple sub-steps or multiple stages, which are not necessarily performed at the same time, but may be performed at different times, which are not necessarily performed in sequence, but may be performed alternately or alternately with other steps or at least a portion of the sub-steps or stages of other steps.
The foregoing is only a partial embodiment of the present application, and it should be noted that, for those skilled in the art, several modifications and decorations can be made without departing from the principle of the present application, and these modifications and decorations should also be regarded as the protection scope of the present application.
Claims (10)
1. A display panel, comprising:
a substrate including a first portion and a second portion separated from each other;
the functional layer comprises a display part, a binding part and a bending part connected between the display part and the binding part, the display part covers the first part, the binding part covers the second part, the bending part comprises a plurality of signal wires, the bending part is bent towards one side away from a light-emitting surface, and the light-emitting surface is the surface of the display part away from the first part;
the electric conductivity is assisted and is glued, attached keep away from in the functional layer one side of substrate, electric conductivity is assisted and is glued and is covered at least bending portion and ground connection.
2. The display panel according to claim 1, further comprising:
fix the part is kept away from the flexible line way board of second part one side is tied up, the flexible line way board includes ground structure, electrically conductive reinforcing glue with ground structure electricity is connected.
3. The display panel according to claim 2, further comprising:
the flexible circuit board is attached to the signal shielding layer far away from one side of the binding part, the signal shielding layer is electrically connected with the grounding structure, and the conductive reinforcing glue is connected with the signal shielding layer.
4. The display panel of claim 2, wherein the conductive auxiliary adhesive further covers a side of the flexible circuit board away from the bonding portion, so that the conductive auxiliary adhesive is electrically connected to the grounding structure.
5. The display panel according to any one of claims 1 to 4, wherein the conductive reinforcing paste comprises a linear reinforcing paste and conductive particles uniformly distributed in the linear reinforcing paste;
the material of the linear reinforcing adhesive comprises light-cured adhesive, and the conductive particles comprise one or more of nickel powder, copper powder, silver powder and nickel-coated copper powder.
6. A display device characterized by comprising the display panel according to any one of claims 1 to 5.
7. A method for manufacturing a display panel is characterized by comprising the following steps:
providing a display panel to be bent, wherein the display panel to be bent comprises a substrate and a functional layer positioned on one side of the substrate, the functional layer comprises a display part, a binding part and a part to be bent, the part to be bent is connected between the display part and the binding part, and the part to be bent comprises a plurality of signal lines;
coating conductive reinforcing glue on one side of the functional layer, which is far away from the substrate, and grounding the conductive reinforcing glue, wherein the orthographic projection of the conductive reinforcing glue on the substrate at least covers the orthographic projection of the part to be bent on the substrate;
removing the substrate covered by the portion to be bent so that only a first portion covered by the display portion and a second portion covered by the binding portion remain on the substrate;
and bending the part to be bent to one side departing from the light-emitting surface to obtain the bent display panel, wherein the light-emitting surface is the surface of the display part, which is far away from the first part.
8. The method for manufacturing a display panel according to claim 7, further comprising: before the conductive auxiliary adhesive is coated, a flexible circuit board is provided and is fixed on one side, away from the second part, of the binding part, and the flexible circuit board comprises a grounding structure;
coating conductive reinforcing glue on one side of the functional layer, which is far away from the substrate, and grounding the conductive reinforcing glue, wherein the method comprises the following steps:
and coating the conductive reinforcing glue on one side of the functional layer, which is far away from the substrate, and electrically connecting the conductive reinforcing glue with the grounding structure of the flexible circuit board.
9. The method of claim 8, wherein coating the conductive paste on a side of the functional layer away from the substrate and electrically connecting the conductive paste to the ground structure of the flexible circuit board comprises:
coating the conductive reinforcing glue on one side of the functional layer, which is far away from the substrate, and carrying out photocuring on the conductive reinforcing glue;
the flexible circuit board is kept away from the attached signal shielding layer of one side of functional layer, the signal shielding layer with ground structure electricity is connected, the signal shielding layer still covers at least part the gluey so that is assisted to electric conductivity the signal shielding layer with the gluey electricity of electric conductivity is assisted and is connected.
10. The method of claim 8, wherein coating the conductive paste on a side of the functional layer away from the substrate and electrically connecting the conductive paste to the ground structure of the flexible circuit board comprises:
coating the conductive reinforcing glue on one side of the functional layer, which is far away from the substrate, wherein the conductive reinforcing glue covers the part to be bent and the flexible circuit board;
and carrying out photocuring on the conductive reinforcing glue, and electrically connecting the cured conductive reinforcing glue with the grounding structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010567447.2A CN111668275A (en) | 2020-06-19 | 2020-06-19 | Display panel, manufacturing method thereof and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010567447.2A CN111668275A (en) | 2020-06-19 | 2020-06-19 | Display panel, manufacturing method thereof and display device |
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| CN111668275A true CN111668275A (en) | 2020-09-15 |
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| CN202010567447.2A Pending CN111668275A (en) | 2020-06-19 | 2020-06-19 | Display panel, manufacturing method thereof and display device |
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| CN113161401A (en) * | 2021-04-22 | 2021-07-23 | 武汉天马微电子有限公司 | Display panel and display device |
| CN113270039A (en) * | 2021-05-20 | 2021-08-17 | 昆山国显光电有限公司 | Display module |
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| WO2023142021A1 (en) * | 2022-01-29 | 2023-08-03 | 京东方科技集团股份有限公司 | Display panel and display device |
| WO2024067417A1 (en) * | 2022-09-28 | 2024-04-04 | 华为技术有限公司 | Display module and electronic device |
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