CN113269291A - Electronic shelf label and manufacturing method thereof - Google Patents
Electronic shelf label and manufacturing method thereof Download PDFInfo
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- CN113269291A CN113269291A CN202010093641.1A CN202010093641A CN113269291A CN 113269291 A CN113269291 A CN 113269291A CN 202010093641 A CN202010093641 A CN 202010093641A CN 113269291 A CN113269291 A CN 113269291A
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- cover plate
- shelf label
- electronic shelf
- display screen
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Images
Classifications
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
- G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
- G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
- G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
- G06K19/077—Constructional details, e.g. mounting of circuits in the carrier
- G06K19/07701—Constructional details, e.g. mounting of circuits in the carrier the record carrier comprising an interface suitable for human interaction
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
- G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
- G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
- G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
- G06K19/077—Constructional details, e.g. mounting of circuits in the carrier
- G06K19/0772—Physical layout of the record carrier
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- Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Display Racks (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
The invention provides an electronic shelf label and a manufacturing method thereof, wherein the manufacturing method of the electronic shelf label comprises the following steps: the front cover plate and the electronic paper display screen are attached through an optically transparent adhesive OCA, and after the attachment is finished, the side edge of the electronic paper display screen is sealed through waterproof sealing glue to form a display assembly; the front cover plate is made of transparent plastic; pressing the assembled printed circuit board PCBA and the display component, and welding the battery and the PCBA together to form an electrical component after the pressing is finished; bonding the peripheral edge of the rear shell with the peripheral edge of the front cover plate, wherein after the bonding is finished, an accommodating space is formed by the front cover plate and the part of the rear shell, which is back to the electric component and protrudes; and injecting epoxy resin glue into the accommodating space, and curing the epoxy resin glue to form a complete machine. The electronic shelf label provided by the technical scheme has the advantages of long service life, thin thickness and good display effect.
Description
Technical Field
The invention relates to the technical field of electronic shelf labels, in particular to an electronic shelf label and a manufacturing method thereof.
Background
As shown in fig. 1, the conventional Electronic Shelf Label (ESL) is, from left to right: protective lenses (Lens), electronic paper display screens (Screen), silicone gel (Silica gel), assembled Printed Circuit Boards (PCBA), housings (Frame), and Battery packs (Battery). Wherein the functions of each part are as follows: the protective lens and the silica gel provide protection for the electronic paper display screen, and the electronic paper display screen is prevented from being damaged by external force impact and falling; the assembled printed circuit board realizes the related functions of the electronic shelf label; and a button battery in the battery box supplies power for the electronic shelf label. The manufacturing process of the electronic shelf label comprises the following steps: the welded circuit board is fixed on the shell through a buckle; the protective lens is fixed with the shell through hot melt adhesive or ultrasonic welding. Disadvantages of this electronic shelf label solution include:
1. the water molecules can not be thoroughly isolated, and after the water molecules are used for a long time, the water molecules easily invade the interior of the product from the edge sealing position, so that the water molecules invade the electronic paper which is a main material of an electronic paper display screen, and the electronic paper is sensitive to water vapor, so that the characteristic change of the electronic paper is caused, the normal display cannot be realized, and the product is invalid.
2. The protective lens and the electronic paper display screen cannot be completely attached, the electronic paper display screen has poor light transmission, and dust or foreign matters enter between the electronic paper display screen and the protective lens to cause product display defects.
3. The conventional process is used in the existing scheme, so that the light and thin design of the product is difficult to realize, the thickness of the whole product is large, the difference from the traditional paper electronic shelf label is huge, and the electronic shelf label is prevented from being used comprehensively.
In view of the above problems, no effective solution has been proposed.
Disclosure of Invention
The embodiment of the invention provides a manufacturing method of an electronic shelf label, which is used for providing the electronic shelf label with long service life, thin thickness and good display effect, and comprises the following steps:
the front cover plate and the electronic paper display screen are bonded together through an optically transparent adhesive OCA, and after bonding is completed, the side edge of the electronic paper display screen is sealed by waterproof sealing glue to form a display assembly; the front cover plate is a cover plate made of transparent plastic;
pressing the assembled printed circuit board PCBA and the display component, and welding the battery and the PCBA together to form an electrical component after the pressing is finished;
bonding the peripheral edge of the rear shell with the peripheral edge of the front cover plate, wherein after the bonding is finished, an accommodating space is formed by the front cover plate and the part of the rear shell, which is back to the electric component and protrudes; and injecting epoxy resin glue into the accommodating space, and curing the epoxy resin glue to form a complete machine.
The embodiment of the invention also provides an electronic shelf label, which is used for providing the electronic shelf label with long service life, thin thickness and good display effect, and comprises the following components:
an electrical component; the electrical assembly includes: a display component, an assembled printed circuit board, PCBA, and a battery; the display assembly includes: the electronic paper display screen comprises a front cover plate and an electronic paper display screen, wherein the front cover plate and the electronic paper display screen are bonded together through an optically transparent adhesive OCA, and after bonding is completed, edge sealing is performed on the side edge of the electronic paper display screen by using waterproof edge sealing glue; the front cover plate is a cover plate made of transparent plastic; the PCBA is connected with the display component in a compression joint mode, and the battery is welded with the PCBA;
the peripheral edge of the rear shell is bonded with the peripheral edge of the front cover plate, and after bonding is finished, an accommodating space is formed by the front cover plate and the part of the rear shell, which is back to the electric component and protrudes;
and epoxy resin glue is injected into the accommodating space, and the epoxy resin glue is cured to form a complete machine.
Compared with the scheme of the electronic shelf label in the prior art, the technical scheme provided by the embodiment of the invention has the following beneficial technical effects:
1. in the embodiment of the invention: display module behind the banding is in the border position that most easily receives steam to influence, electronic paper display screen side carries out the banding with waterproof banding glue promptly, it is isolated with the steam in electronic paper display screen and the external environment, and inject into the accommodation space that front shroud and backshell electric component bellied part dorsad formed with epoxy glue, further seal the electric subassembly including electronic paper screen, further isolated steam, the life of electronic paper display screen has been prolonged greatly, and then the life of electronic goods shelves label has been prolonged.
2. According to the embodiment of the invention, the cover plate made of thin transparent plastic is used for replacing a thick protective lens, the thickness of the whole machine is reduced by about 50% compared with the traditional design, and the whole experience is closer to the effect of a paper electronic shelf label.
3. In the embodiment of the invention: the front cover plate and the electronic paper display screen are tightly attached together through the optically transparent adhesive OCA, and the front cover plate is also a cover plate made of transparent plastic, so that the light transmission is improved, and the display effect of the electronic shelf label is improved.
In addition, epoxy glue is injected into an accommodating space formed by the front cover plate and the part, back to the electric component, of the rear shell, the epoxy glue is cured to form a complete machine, the strength of the complete machine is high, and the service life of the electronic shelf label is further prolonged.
In conclusion, the electronic shelf label provided by the embodiment of the invention has the advantages of long service life, thin thickness and good display effect.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic diagram of a prior art electronic shelf label;
FIG. 2 is a schematic flow chart of a method of manufacturing an electronic shelf label in an embodiment of the invention;
FIG. 3 is a schematic illustration of the fabrication of an electronic shelf label in an embodiment of the invention;
FIG. 4 is a schematic side view of an electronic shelf label according to an embodiment of the invention;
fig. 5 is a schematic structural diagram of an electronic shelf label in an embodiment of the invention.
Detailed Description
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. 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.
Before describing the embodiments of the present invention, the terms and full names related to the embodiments of the present invention will be described.
1. ESL: electronic Shelf Label (Electronic Shelf Label).
2. MCU: micro Controller Unit, microcontroller.
3. RF: radio Frequency, Radio Frequency.
4. EPD: electronic Paper Displays.
5. SiP: system in Package.
6. SoC: system on Chip, Chip level System.
7. PCB: printed Circuit Board.
8. PCBA: printed Circuit Board Assembly, Printed Circuit Board has been assembled.
9. NFC: near Field Communication.
10. ACF: anisotropic Conductive Film.
11. CNC: computerized Numerical Control (CNC).
12. OCA: optically Clear Adhesive.
The inventor finds that the technical problems of the existing electronic shelf label scheme are as follows:
1. protection lens and shell pass through ultrasonic bonding, and hot melt adhesive bonds or the buckle mode is fixed, and inside the unable complete isolated hydrone invasion electronic shelf label product. Electronic paper widely used for electronic paper display screens in electronic shelf labels is sensitive to water vapor, and the main reason for failure is that water molecules invade from the edge seals after long-time use, so that the characteristics of the electronic paper are changed, and normal display cannot be realized.
2. Protection lens and electronic paper display screen can't laminate completely among the conventional design, and the screen light transmissivity is poor, and dust or foreign matter get into between electronic paper display screen and the protection lens, lead to electronic shelf label product to show the defect.
3. The conventional process is used in the existing design, the whole machine product is thick and heavy, the difference from the traditional paper label is huge, and the electronic shelf label is prevented from being used comprehensively.
Therefore, as the inventor considers the above technical problems, an electronic shelf label and a manufacturing scheme thereof are proposed, which solves the following problems:
1. the electronic paper display screen, the circuit board, the battery and other main components are isolated from the external environment, water molecule invasion is avoided, and the problem that the electronic paper display screen is affected by water vapor and has function failure is solved.
2. The problem of there is the space between protection lens and the electronic paper display screen, lead to the light transmissivity poor, the display effect worsens is solved.
3. The problem of thick and heavy product of the whole machine is solved, the whole machine is closer to the use mode of paper labels, and the large-scale popularization of electronic shelf labels is facilitated.
The electronic shelf label and its manufacturing scheme will be described in detail below.
Fig. 2 is a schematic flow chart of a method for manufacturing an electronic shelf label according to an embodiment of the present invention, as shown in fig. 2, the method includes the following steps:
step 101: the front cover plate and the electronic paper display screen are bonded together through an optically transparent adhesive OCA, and after bonding is completed, the side edge of the electronic paper display screen is sealed by waterproof sealing glue to form a display assembly; the front cover plate is a cover plate made of transparent plastic;
step 102: pressing the assembled printed circuit board PCBA and the display component, and welding the battery and the PCBA together to form an electrical component after the pressing is finished;
step 103: bonding the peripheral edge of the rear shell with the peripheral edge of the front cover plate, wherein after the bonding is finished, an accommodating space is formed by the front cover plate and the part of the rear shell, which is back to the electric component and protrudes; and injecting epoxy resin glue into the accommodating space, and curing the epoxy resin glue to form a complete machine.
The steps involved in the embodiments of the present invention will be described in detail below with reference to fig. 2 to 5.
First, the above step 101 is described.
In specific implementation, as shown in fig. 3 and 5, the main process implemented in step 101 is as follows:
1. the front cover plate 1 is formed by cutting a transparent poly (terephthalic) plastic PET, polycarbonate PC or polymethylmethacrylate PMMA material.
In one embodiment, the method for manufacturing an electronic shelf label may further include: and cleaning and preprocessing the front cover plate.
During specific implementation, PET pretreatment accomplishes the cleanness of PET membrane for follow-up PET is more firm with the OCA laminating, and then makes electronic shelf label more firm.
2. Laminating the OCA of the screen:
in one embodiment, the front cover plate and the electronic paper display screen are bonded together by the optically transparent adhesive OCA, and after the bonding is completed, the side edge of the electronic paper display screen is sealed by the waterproof sealing glue to form a display assembly, which may include:
the front cover plate and the electronic paper display screen are attached together through an optically transparent adhesive OCA (the OCA is not marked in FIG. 5);
after the bonding is finished, bubbles possibly introduced in the bonding are eliminated through a defoaming procedure;
and after the defoaming procedure is finished, sealing the side edge of the electronic paper display screen by using waterproof sealing glue to form a display assembly.
During specific implementation, the front cover plate and the display screen are attached through OCA glue, air bubbles possibly introduced during attachment are eliminated through a defoaming process, and the quality of the electronic shelf label is improved.
3. Sealing the edge of the screen: after the attaching and defoaming process, the edges of the display screen (for example, four edges if the electronic tag is a quadrilateral, for example, four edges of the mobile phone may be referred to) are sealed with a special waterproof sealing glue (the special waterproof sealing glue is not shown in fig. 5) if the electronic shelf tag is designed to be a circular or elliptical edge, for example, a circumferential edge, to form a screen assembly (display assembly), and the display assembly is formed after the sealing is completed.
An EPD electronic paper screen commonly used for the conventional electronic shelf label is sensitive to water vapor in a use environment, and after the EPD electronic paper screen is used for a long time, water molecules usually invade display material electronic paper from four sides, so that abnormal display is caused. In the embodiment of the invention, the edge of the display component subjected to edge sealing is sealed by using the waterproof edge sealing glue at the edge position which is most susceptible to water vapor, so that the screen is isolated from the water vapor in the external environment, the service life of the electronic paper screen is greatly prolonged, and the service life of the electronic shelf label is further prolonged.
Next, the above step 102 is described.
In specific implementation, as shown in fig. 3 and 5, the main process implemented in step 102 is as follows:
1. PCBA preparation: and welding related components of the electronic shelf label to the PCB, and completing related program burning of the electronic shelf label.
2. ACF compression bonding: the PCBA and the screen component are connected through ACF crimping to complete connection of electrical signals (such as receiving display control signals of a base station, product price updating signals and the like).
In one embodiment, crimping the assembled printed circuit board PCBA3 to the display assembly may include: the assembled printed circuit board PCBA is crimped with the display assembly by an ACF process.
When the electronic shelf label is specifically implemented, the PCBA and the display component are connected through ACF process crimping, and the firmness of the electronic shelf label is guaranteed.
3. Battery welding: the positive and negative contacts of the battery 4 are spot welded to the PCBA to form a complete electrical assembly.
And the PCBA and the display component after the PCB welding are pressed and connected through an ACF process, and then the battery welding is completed to form the complete electric component.
Third, next, the above step 103 is described.
In specific implementation, as shown in fig. 3 and 5, the implementation process of step 103 mainly includes:
1. the electrical components and the rear case are bonded by a hot melt adhesive.
In one embodiment, bonding a peripheral edge of the rear housing to a peripheral edge of the front cover plate includes: the peripheral edge of the rear case is bonded to the peripheral edge of the front cover plate by a hot melt adhesive.
When the electronic shelf label is specifically implemented, the peripheral edge of the rear shell is bonded with the peripheral edge of the electrical component through the hot melt adhesive, so that the firmness of the electronic shelf label is ensured. The above mentioned peripheral edge may be a circumferential edge if the electronic shelf label is quadrangular in shape, of course a circumferential edge if the electronic shelf label is circular, etc.
2. Encapsulating: epoxy glue is injected into the back shell.
In one embodiment, injecting epoxy glue into the receiving space may include: in fig. 4, 8 is an edge sealing glue and 9 is an epoxy resin glue, the epoxy resin glue is injected into the accommodating space (as shown in fig. 5, a black filling area, namely, all gaps between the front cover plate and the rear housing, including a long-strip-shaped gap between the rear housing and the electrical component, the epoxy resin glue injected into the accommodating space fully coats the electronic paper display screen including the electrical component, so that water vapor is further prevented from entering the electronic paper display screen, the service life of the electronic paper display screen is further prolonged, and the service life of the electronic shelf label is further prolonged).
3. And (3) curing: and (3) fully bonding and curing the epoxy resin glue to form a complete machine after a certain time.
The electric component is bonded with the rear shell by hot melt adhesive water, after bonding is completed, epoxy resin glue is added through the glue filling port 6, bonding of the electric component and the rear shell is completed, and meanwhile, the electric component is further sealed. And curing the epoxy resin glue to form a high-strength sealing complete machine.
In summary, the technical solution provided in this embodiment realizes:
1. the edge sealing glue of the edge points of the screen is used for blocking the water vapor entering the four sides of the screen, so that the service life of the whole machine is prolonged.
2. The screen and external environment water vapor are isolated by using the encapsulating epoxy resin glue, so that the service life of the whole machine is prolonged.
3. Use OCA will protect front shroud and electronic paper display screen to laminate completely in electronic goods shelves label, improved the light transmissivity, and then improved the display effect.
4. The thin PET film is used for replacing thick protective lenses, the thickness of the whole machine is reduced by about 50% compared with that of the traditional design, and the whole experience is closer to the effect of a paper electronic shelf label.
5. And the encapsulating epoxy resin glue is used in the electronic shelf label, so that the structural strength of the whole machine is improved.
Based on the same inventive concept, the embodiment of the present invention further provides an electronic shelf label, as described in the following embodiments. Because the principle of solving the problem of the electronic shelf label is similar to the manufacturing method of the electronic shelf label, the implementation of the electronic shelf label can refer to the implementation of the manufacturing method of the electronic shelf label, and repeated parts are not described again.
Fig. 5 is a schematic structural diagram of an electronic shelf label in an embodiment of the present invention, and as shown in fig. 5, the electronic shelf label includes:
an electrical component; the electrical assembly includes: a display component, an assembled printed circuit board PCBA3 and a battery 4; the display assembly includes: the electronic paper display screen comprises a front cover plate 1 and an electronic paper display screen 2, wherein the front cover plate and the electronic paper display screen are bonded together through an optically transparent adhesive OCA, and after bonding is completed, edge sealing is performed on the side edge of the electronic paper display screen by using waterproof edge sealing glue; the front cover plate is a cover plate made of transparent plastic;
the peripheral edge of the rear shell is bonded with the peripheral edge of the front cover plate, and after bonding is finished, a containing space is formed by the front cover plate and the part of the rear shell, which is back to the electric component and protrudes;
and epoxy resin glue is injected into the accommodating space, and the epoxy resin glue is cured to form a complete machine.
In one embodiment, the peripheral edge of the rear cover is bonded to the peripheral edge of the front cover plate, particularly by hot melt adhesive.
In one embodiment, as shown in fig. 5, the electronic shelf label may further include: and the glue filling port 6 is arranged on the side edge of the rear shell and used for injecting epoxy resin glue into the accommodating space.
In one embodiment, the glue filling opening is arranged on the side edge of the rear shell.
During specific implementation, the glue filling port is arranged on the side edge of the rear shell, and the appearance is attractive and elegant.
In one embodiment, as shown in fig. 5, the glue pouring port is provided with a glue pouring port cover 7.
When the electronic shelf label is specifically implemented, the glue filling opening cover can be a sticker, and the arrangement of the glue filling opening cover facilitates the glue filling implementation of the electronic shelf label.
In one embodiment, the PCBA is press bonded with the display component via an ACF process.
In one embodiment, after the front cover plate and the electronic paper display screen are attached together by the optically transparent adhesive OCA, the side edges of the electronic paper display screen are sealed by the waterproof edge sealing glue after air bubbles possibly introduced during attachment are eliminated by a defoaming process, so as to form the display assembly.
In one embodiment, the thickness of the electronic shelf label may range from: 6 mm to 7 mm.
When the electronic shelf label is specifically implemented, the thickness range of the electronic shelf label is 6-7 mm, and the electronic shelf label is attractive and elegant.
In one embodiment, the thickness of the electronic shelf label is 6.5 mm.
When the electronic shelf label is specifically implemented, the thickness value of the electronic shelf label is 6.5 millimeters, and the electronic shelf label is more attractive and elegant.
In one embodiment, the thickness of the front cover plate ranges from: 0.2 mm to 1.2 mm.
When the front cover plate is specifically implemented, the thickness of the front cover plate ranges from 0.2 mm to 1.2 mm, and the front cover plate is attractive and elegant.
In one embodiment, the thickness of the front cover plate is: 0.5 mm.
During specific implementation, the thickness of the front cover plate is 0.5 mm, so that the appearance is more attractive and elegant.
In one embodiment, the electronic shelf label is rectangular in shape.
When the electronic shelf label is specifically implemented, the electronic shelf label is rectangular, attractive and elegant, and is convenient to implement.
In one embodiment, the width of the front cover plate is wider than the width of the electrical component, and the difference between the width of the front cover plate and the width of the electrical component has a value range of: 1.2 mm to 1.6 mm; the length of the front cover plate is longer than that of the electrical component, and the value range of the difference between the length of the front cover plate and the length of the electrical component is 1.2 mm to 1.6 mm.
When the electronic shelf label is specifically implemented, the difference value between the thickness of the electronic shelf label, the thickness of the front cover plate, the length of the front cover plate and the width of the electric assembly is set, so that the electronic shelf label can form a containing space for fully coating the electronic paper display screen, water vapor is further isolated, the service life of the electronic paper display screen is greatly prolonged, and the service life of the electronic shelf label is further prolonged.
In one embodiment, the front cover plate is a cover plate made of PET (polyethylene terephthalate), PC (polycarbonate) or PMMA (polymethyl methacrylate).
In specific implementation, the advantages of the front cover plate made of PET, PC or PMMA include:
1. the thin cover plate made of the PET, the cover plate made of the PC or the cover plate made of the PMMA replaces a thick protective lens, the thickness of the whole machine is reduced by about 50% compared with the traditional design, and the whole experience is closer to the effect of a paper electronic shelf label.
2. The front cover plate is a transparent cover plate made of poly-p-phthalic acid plastic PET, polycarbonate PC or polymethyl methacrylate PMMA, so that the light transmittance is improved, and the display effect of the electronic shelf label is improved.
The technical scheme provided by the embodiment of the invention has the beneficial technical effects that:
1. the electric assembly comprising the electronic paper display screen is fully coated by epoxy resin glue and fully isolated from external water vapor, and the service life of the screen is prolonged from 5 years to 10 years through the verification of an accelerated aging test.
2. The strength of the whole machine is improved by using the potting glue epoxy resin, the cover plate is made of thin transparent plastic, for example, the cover plate made of transparent polyterephthalic acid plastic PET, the cover plate made of polycarbonate PC or the cover plate made of polymethyl methacrylate PMMA replaces a thick protective lens, the thickness of the whole machine is reduced by about 50% compared with the traditional design, and the whole experience is closer to the paper price tag effect.
3. The front cover plate is tightly attached to the screen, so that the light transmission and the display effect are improved.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes may be made to the embodiment of the present invention by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (14)
1. A method of manufacturing an electronic shelf label, comprising:
the front cover plate and the electronic paper display screen are bonded together through an optically transparent adhesive OCA, and after bonding is completed, the side edge of the electronic paper display screen is sealed by waterproof sealing glue to form a display assembly; the front cover plate is a cover plate made of transparent plastic;
pressing the assembled printed circuit board PCBA and the display component, and welding the battery and the PCBA together to form an electrical component after the pressing is finished;
bonding the peripheral edge of the rear shell with the peripheral edge of the front cover plate, wherein after the bonding is finished, an accommodating space is formed by the front cover plate and the part of the rear shell, which is back to the electric component and protrudes; and injecting epoxy resin glue into the accommodating space, and curing the epoxy resin glue to form a complete machine.
2. The method of manufacturing an electronic shelf label according to claim 1, wherein the front cover plate and the electronic paper display screen are bonded together by an optically transparent adhesive OCA, and after the bonding is completed, the side edges of the electronic paper display screen are sealed by a waterproof sealing glue to form a display assembly, comprising:
the front cover plate and the electronic paper display screen are adhered together through an optically transparent adhesive OCA;
after the bonding is finished, defoaming process treatment is carried out;
and after the defoaming procedure is finished, sealing the side edge of the electronic paper display screen by using waterproof sealing glue to form a display assembly.
3. A method of manufacturing an electronic shelf label as defined in claim 1, wherein crimping an assembled printed circuit board, PCBA, to the display assembly comprises: the assembled printed circuit board PCBA is crimped with the display assembly by an ACF process.
4. The method of manufacturing an electronic shelf label as defined in claim 1, wherein bonding the peripheral edge of the back cover to the peripheral edge of the front cover comprises: the peripheral edge of the rear case is bonded to the peripheral edge of the front cover plate by a hot melt adhesive.
5. The method of manufacturing an electronic shelf label as defined in claim 1, wherein injecting an epoxy glue into the receiving space comprises: and injecting epoxy resin glue into the accommodating space through a glue filling port.
6. The method of manufacturing an electronic shelf label as defined in claim 1, further comprising: and cleaning and preprocessing the front cover plate.
7. An electronic shelf label, comprising:
an electrical component; the electrical assembly includes: a display component, an assembled printed circuit board, PCBA, and a battery; the display assembly includes: the electronic paper display screen comprises a front cover plate and an electronic paper display screen, wherein the front cover plate and the electronic paper display screen are bonded together through an optically transparent adhesive OCA, and after bonding is completed, edge sealing is performed on the side edge of the electronic paper display screen by using waterproof edge sealing glue; the front cover plate is a cover plate made of transparent plastic; the PCBA is connected with the display component in a compression joint mode, and the battery is welded with the PCBA;
the peripheral edge of the rear shell is bonded with the peripheral edge of the front cover plate, and after bonding is finished, an accommodating space is formed by the front cover plate and the part of the rear shell, which is back to the electric component and protrudes;
and epoxy resin glue is injected into the accommodating space, and the epoxy resin glue is cured to form a complete machine.
8. An electronic shelf label as defined in claim 7, wherein the peripheral edge of the rear shell is bonded to the peripheral edge of the front cover panel, in particular by hot melt adhesive.
9. The electronic shelf label as defined in claim 7, further comprising: and the glue filling port is arranged on the side edge of the rear shell and used for injecting epoxy resin glue into the accommodating space.
10. The electronic shelf label as defined in claim 9, wherein the glue-pouring opening is provided on a side edge of the rear shell.
11. An electronic shelf label as defined in claim 9 or 10, characterized in that the glue filling opening is provided with a glue filling opening cover.
12. An electronic shelf label as defined in claim 7, wherein PCBA is crimped with the display component by an ACF process.
13. The electronic shelf label of claim 7, wherein the width of the front cover is wider than the width of the electrical component, and the difference between the width of the front cover and the width of the electrical component ranges from: 1.2 mm to 1.6 mm; the length of the front cover plate is longer than that of the electrical component, and the value range of the difference between the length of the front cover plate and the length of the electrical component is 1.2 mm to 1.6 mm.
14. An electronic shelf label as defined in claim 7, wherein the front cover is a cover made of PET, PC or PMMA.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010093641.1A CN113269291A (en) | 2020-02-14 | 2020-02-14 | Electronic shelf label and manufacturing method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010093641.1A CN113269291A (en) | 2020-02-14 | 2020-02-14 | Electronic shelf label and manufacturing method thereof |
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