CN110706601A - High-transparency flexible display screen and manufacturing method thereof - Google Patents
High-transparency flexible display screen and manufacturing method thereof Download PDFInfo
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- CN110706601A CN110706601A CN201911122573.0A CN201911122573A CN110706601A CN 110706601 A CN110706601 A CN 110706601A CN 201911122573 A CN201911122573 A CN 201911122573A CN 110706601 A CN110706601 A CN 110706601A
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- 239000000758 substrate Substances 0.000 claims description 25
- 229920002120 photoresistant polymer Polymers 0.000 claims description 21
- 239000003292 glue Substances 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 13
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 10
- 229910052709 silver Inorganic materials 0.000 claims description 10
- 239000004332 silver Substances 0.000 claims description 10
- 239000000945 filler Substances 0.000 claims description 6
- 239000011248 coating agent Substances 0.000 claims description 5
- 238000000576 coating method Methods 0.000 claims description 5
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- 238000010438 heat treatment Methods 0.000 claims description 4
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- 238000003486 chemical etching Methods 0.000 claims description 3
- 238000005530 etching Methods 0.000 claims description 3
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- 238000003825 pressing Methods 0.000 claims description 3
- 229920005989 resin Polymers 0.000 claims description 3
- 239000011347 resin Substances 0.000 claims description 3
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- 239000010408 film Substances 0.000 claims 3
- 239000010409 thin film Substances 0.000 claims 1
- 238000002360 preparation method Methods 0.000 abstract description 4
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- 239000011521 glass Substances 0.000 description 3
- 229920000139 polyethylene terephthalate Polymers 0.000 description 2
- 229920002799 BoPET Polymers 0.000 description 1
- -1 acryl Chemical group 0.000 description 1
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- 230000001070 adhesive effect Effects 0.000 description 1
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- 238000011161 development Methods 0.000 description 1
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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
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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
- G09F9/33—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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Abstract
The invention provides a high-transparency flexible display screen and a manufacturing method thereof. The display screen of the invention comprises: the LED lamp comprises a transparent base material, a transparent conducting layer and LED lamps, wherein the transparent conducting layer is arranged on the transparent base material, the LED lamps are arranged on a transparent base material bonding pad with the transparent conducting layer, a conducting path is formed between the LED lamps and the transparent conducting layer, a filling material forming filling layer is arranged between the LED lamps, and a transparent flexible protective film is arranged on the filling layer. The invention also provides a manufacturing method of the high-transparency flexible display screen of the display screen, which has the advantages of low processing cost, simple used equipment, short preparation period, repeatable imprint template, capability of preparing nano-scale patterns in a large area and the like, and meanwhile, the display screen has the advantages of lightness, thinness, flexibility, high transparency and the like.
Description
Technical Field
The invention relates to the technical field of LED display screens, in particular to a high-transparency flexible display screen and a manufacturing method thereof.
Background
With the continuous progress and development of LED display technology, LED display screens are widely used in various industries. From the tradition base material that adopts hard materials such as glass, acryl board as LED display screen to using flexible materials such as FPC or PET as the flexible transparent screen of base material now, it has soft flexible, the quality is light, and is transparent, advantages such as simple to operate for LED display technology better is applied to in the middle of the human life.
In recent years, flexible transparent display screens are widely applied to positions such as glass curtain walls due to lightness, thinness and strong bending performance, and adhesive glue needs to be smeared when the flexible transparent display screens are installed on the glass curtain walls, so that the installation work is complicated; simultaneously, the current flexible transparent display screen still has the interference of external light source when using and leads to showing unclear scheduling problem. In addition, most flexible transparent screens at present adopt the traditional photoetching technology to further form a transparent conducting layer, the technology mainly utilizes electrons and photons to change the physical and chemical properties of photoresist so as to obtain corresponding nano patterns, and the technology is limited by photon diffraction and electron scattering, so that the nano patterns cannot be prepared in a large area.
Disclosure of Invention
In light of the above-mentioned technical problems, a highly transparent flexible display panel and a method for manufacturing the same are provided. The invention has the advantages of low processing cost, simple used equipment, short preparation period, repeatable imprint template, capability of preparing nano-scale patterns in a large area and the like.
The technical means adopted by the invention are as follows:
a high-transparency flexible display screen comprising: transparent substrate, install transparent conducting layer on the transparent substrate and install the LED lamp on the transparent substrate pad that has transparent conducting layer, LED lamp and transparent conducting layer form the electrically conductive route, be provided with the filler between the LED lamp and form the filling layer be provided with transparent flexible protective film on the filling layer.
Furthermore, the transparent conducting layer comprises a printed circuit printed on the transparent conducting layer, and a plurality of pad pins electrically connected with the printed circuit are arranged on the transparent conducting layer.
Further, the pad pins comprise LED pad pins with a driving function and FPC connector pad pins, the LED lamp and the transparent conducting layer form a conducting path in a silver paste dispensing mode, the external controller is connected with the FPC connector, and the FPC connector pad pins and the transparent conducting layer form a conducting path after being reinforced through ACF glue and a bonding machine.
Furthermore, after the LED lamp forms a conductive path with the transparent conductive layer in a silver paste dispensing mode, UV glue needs to be added between the pins of the LED bonding pad, and firmness of the LED lamp and the transparent substrate is strengthened.
Further, the transparent base material is a film material of resin, PET or PE film.
The invention also provides a manufacturing method of the high-transparency flexible display screen, which comprises the following steps:
s1, manufacturing a transparent conducting layer, and coating the manufactured transparent conducting layer on a transparent substrate;
s2, installing an LED lamp on the bonding pads on the transparent substrate coated with the transparent conductive layer by silver paste dispensing, and adding UV glue between the bonding pads;
s3, after the LED lamp is installed, ultraviolet lamp illumination and high-temperature heating are carried out to form a stable display unit of the LED lamp, pad pins corresponding to the FPC connector are arranged on the transparent conducting layer, ACF glue is pasted on the pad pins of the FPC connector and is connected with the FPC connector through a bonding machine, and electrical testing is carried out;
s4, after no problem is detected, fillers are arranged between the LED lamps to form a filling layer, and a transparent flexible protective film is arranged on the filling layer to form a high-transparency flexible display screen.
Further, the specific process for manufacturing the transparent conductive layer is as follows:
s11, preparing a template on the substrate according to the circuit diagram;
s12, coating photoresist on the surface of the material to be processed, pressing the template on the photoresist, and transferring the pattern to the photoresist by pressurization;
and S13, curing the photoresist by adopting ultraviolet light, removing the template, corroding the photoresist by using corrosive liquid to expose the surface of the processing material, processing by using a chemical etching method, and removing all the photoresist to form the transparent conducting layer.
Compared with the prior art, the invention has the following advantages:
the display screen provided by the invention has the advantages of lightness, thinness, flexibility, high transparency, low processing cost, simple used equipment, short preparation period, capability of preparing nano-scale patterns in a large area and the like.
Based on the reason, the invention can be widely popularized in the fields of LED display screens and the like.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a high-transparency flexible display screen according to the present invention.
FIG. 2 is a schematic view of a process for fabricating a transparent conductive layer according to the present invention.
FIG. 3 is a schematic diagram of the transparent conductive layer wiring according to the present invention.
In the figure: 1. a transparent substrate; 2. a transparent conductive layer; 3. a transparent flexible protective film; 4. an LED lamp; 5. a filling layer; 6. a template; 7. photoresist; 8. a transparent substitute processing material; 9. ultraviolet light; 10. LED pad pins; 11. FPC connector pad pin.
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. 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.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. Any specific values in all examples shown and discussed herein are to be construed as exemplary only and not as limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
In the description of the present invention, it is to be understood that the orientation or positional relationship indicated by the directional terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc., are generally based on the orientation or positional relationship shown in the drawings, and are used for convenience of description and simplicity of description only, and in the absence of any contrary indication, these directional terms are not intended to indicate and imply that the device or element so referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore should not be considered as limiting the scope of the present invention: the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.
Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, and therefore, the scope of the present invention should not be construed as being limited.
As shown in fig. 1, the present invention provides a high-transparency flexible display screen, comprising: transparent substrate 1, install transparent conducting layer 2 on transparent substrate 1 and install LED lamp 4 on the transparent substrate pad that has transparent conducting layer 2, LED lamp 4 and transparent conducting layer 2 form the electrically conductive route, are provided with filler formation filling layer 5 between LED lamp 4, are provided with transparent flexible protective film 3 on filling layer 5.
Further, as shown in fig. 2 and 3, as a preferred embodiment of the present invention, the transparent conductive layer 2 includes a printed circuit printed on the transparent conductive layer, and the transparent conductive layer 2 is provided with a plurality of pad pins electrically connected to the printed circuit. The dish pin is including taking drive function's LED pad pin 10, FPC connector pad pin 11, and LED lamp 4 forms the conducting path through some silver thick liquid modes and transparent conducting layer 2, realizes that LED lights, and the FPC connector is connected to external control ware, and FPC connector pad pin 11 passes through ACF glue and adopts bonding machine to consolidate the back and form the conducting path with transparent conducting layer 2, realizes the electrical connection test, and ACF glue has the conductivity through the hot pressing.
Further, as a preferred embodiment of the present invention, after the LED lamp 4 forms a conductive path with the transparent conductive layer 2 by a silver paste dispensing method, UV glue needs to be added between the LED pad pins 10 to reinforce the firmness between the LED lamp and the substrate.
Further, as a preferred embodiment of the present invention, the transparent substrate 1 is a film material having transparency, flexibility, lightness, thinness, and adhesiveness, such as a resin, a PET film, or a PE film.
The invention also provides a manufacturing method of the high-transparency flexible display screen, which comprises the following steps:
s1, manufacturing a transparent conducting layer 2, and applying the manufactured transparent conducting layer 2 on a transparent substrate 1;
the invention adopts the nano-imprinting technology to manufacture the transparent conducting layer, and comprises the procedures of template preparation, photoresist coating, die pressing, exposure, demolding, etching and the like, and the specific process is as follows:
s11, preparing a template 6 on the substrate according to the circuit diagram;
s12, coating photoresist on the surface of the transparent processing material 8, pressing the template 6 on the photoresist, and transferring the pattern to the photoresist 7 by pressurization;
s13, curing the photoresist 7 by adopting ultraviolet light 9, removing the template 6, etching the photoresist by using corrosive liquid to expose the transparent processing material 8, processing by using a chemical etching method, and removing all the photoresist to form the transparent conducting layer 2.
S2, installing the LED lamp 4 on the bonding pads of the transparent substrate 1 coated with the transparent conducting layer 2 by silver paste dispensing, and adding UV glue between the bonding pads; the method is used for reinforcing the firmness of the LED lamp and the base material.
S3, after the LED lamp 4 is installed, ultraviolet lamp illumination and high-temperature heating are carried out to form a stable display unit of the LED lamp, the stable display unit is connected with the FPC connector through a bonding machine, and electrical testing is carried out; the purpose of the UV light is to solidify the UV glue and further strengthen the connection between the LED lamp 4 and the transparent substrate 1. The purpose of high temperature heating is to strengthen the silver paste.
S4, after no problem is detected, fillers are arranged between the LED lamps 4 to form a filling layer 5, and the transparent flexible protective film 3 is arranged on the filling layer 5 to form the high-transparency flexible display screen.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (7)
1. A high-transparency flexible display screen is characterized by comprising: transparent substrate (1), install transparent conducting layer (2) on transparent substrate (1) and install LED lamp (4) on the transparent substrate pad with transparent conducting layer (2), LED lamp (4) and transparent conducting layer (2) form the conducting path, be provided with filler formation filling layer (5) between LED lamp (4) be provided with transparent flexible protective film (3) on filling layer (5).
2. The high-transparency flexible display screen according to claim 1, wherein the transparent conductive layer (2) comprises a printed circuit printed on the transparent conductive layer, and the transparent conductive layer (2) is provided with a plurality of pad pins electrically connected with the printed circuit.
3. The high-transparency flexible display screen according to claim 2, wherein the pad pins comprise LED pad pins (10) with a driving function and FPC connector pad pins (11), the LED lamp (4) forms a conductive path with the transparent conductive layer (2) through a silver paste dispensing manner, the external controller is connected with the FPC connector, and the FPC connector pad pins (11) form a conductive path with the transparent conductive layer (2) after being reinforced through ACF glue and a bonding machine.
4. The high-transparency flexible display screen according to claim 3, wherein after the LED lamp (4) forms a conductive path with the transparent conductive layer (2) by means of silver paste, UV glue is added between the LED pad pins (10) to reinforce the firmness of the LED lamp (4) and the transparent substrate (1).
5. The high-transparency flexible display screen according to claim 1, wherein the transparent substrate (1) is a thin film material of resin, PET or PE film.
6. A manufacturing method of a high-transparency flexible display screen is characterized by comprising the following steps:
s1, manufacturing a transparent conducting layer (2), and applying the manufactured transparent conducting layer (2) on a transparent substrate (1);
s2, mounting the LED lamp (4) on the bonding pads of the transparent substrate (1) coated with the transparent conductive layer (2) by silver paste, and adding UV glue between the bonding pads;
s3, after the LED lamp (4) is installed, ultraviolet lamp illumination and high-temperature heating are carried out to form a stable display unit of the LED lamp, pad pins corresponding to the FPC connector are arranged on the transparent conducting layer (2), ACF glue is pasted on the pad pins (11) of the FPC connector and is connected with the FPC connector through a bonding machine to carry out electrical testing;
s4, after no problem is detected, fillers are arranged between the LED lamps (4) to form a filling layer (5), and a transparent flexible protective film (3) is arranged on the filling layer (5) to form a high-transparency flexible display screen.
7. The manufacturing method of the high-transparency flexible display screen according to claim 6, wherein the specific process of manufacturing the transparent conductive layer is as follows:
s11, preparing a template (6) on the substrate according to the circuit diagram;
s12, coating photoresist on the surface of the transparent processing material (8), pressing the template (6) on the photoresist, and transferring the pattern to the photoresist (7) by pressurization;
s13, curing the photoresist (7) by adopting ultraviolet light (9), removing the template (6), etching the photoresist by using corrosive liquid to expose the transparent processing material (8), processing by using a chemical etching method, and removing all the photoresist to form the transparent conducting layer (2).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911122573.0A CN110706601A (en) | 2019-11-15 | 2019-11-15 | High-transparency flexible display screen and manufacturing method thereof |
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Cited By (5)
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| CN110796956A (en) * | 2019-11-15 | 2020-02-14 | 大连集思特科技有限公司 | Flexible transparent display screen and manufacturing method thereof |
| CN112530294A (en) * | 2020-12-25 | 2021-03-19 | 河南达斯莱博传媒科技有限公司 | Flexible transparent display screen and manufacturing method thereof |
| CN113129774A (en) * | 2021-04-23 | 2021-07-16 | 大连集思特科技有限公司 | LED intelligent glass bidirectional display based on grouting method and manufacturing method thereof |
| CN114187850A (en) * | 2021-12-17 | 2022-03-15 | 合肥达视光电科技有限公司 | Film-attached display screen with high permeability and production process |
| CN115095805A (en) * | 2022-06-29 | 2022-09-23 | 广州市安旭特电子有限公司 | LED light bar and lead wire connection method and LED chip |
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