A bistable display device, a display apparatus and a driving apparatus

Abstract

The present invention discloses a bistable display device, a display device and a driving device. The bistable display device can ensure a normal display effect without installing a battery. The bistable display device can be connected to a driving device (200) through a physical interface. The bistable display device (100) does not include a battery, and includes a display component (101), at least one first physical interface (102) coupled to the display component (101), a first receiving circuit (103) and a second receiving circuit (104); the display component (101) includes at least one driving IC (1011); the first physical interface (102) includes a first physical connection part (1021), at least one first electrical connection part (1022A) and at least one second electrical connection part (1022B). The first receiving circuit (103) receives a power supply signal from the driving device (200) through the first electrical connection part (1022A), and the second receiving circuit (104) receives a display signal through the second electrical connection part (1022B).

Description

Technical Field

[0001] The present invention relates to the technical field of electrophoretic display, and in particular to a bistable display device, a display equipment and a driving equipment. Background Art

[0002] With the advancement of technology, bistable display devices produced using electrophoretic display technology have the characteristics of being ultra-light, rewritable, easy to carry, and able to maintain display even when the power is off. Electronic tags have gradually replaced paper labels that are currently widely used in shopping mall shelves, archive storage, warehouse storage and other environments.

[0003] Electronic tags in the prior art usually require battery power supply. When the battery is exhausted, it needs to be replaced manually. If the discarded battery is not properly handled, it will also pollute the environment. Installing batteries in the above-mentioned bistable display device also makes the device larger in size and cannot meet the market requirements for lighter and thinner devices. If an external power cord is used, it is necessary to further consider a series of practical issues such as how to arrange the power cord for the device. In addition, if a supermarket needs 10,000 electronic tags and the cost of the battery is 1 yuan, then the cost of the battery alone is 10,000 yuan, which greatly increases the cost.

[0004] Therefore, the industry is in urgent need of providing a bistable display device that does not require a battery and a matching driving device. In order to solve the above problems, relevant manufacturers have spared no effort to seek solutions, but for a long time, no suitable design has been developed, and there is no suitable method to solve the above problems. This is obviously a problem that the relevant industry is eager to solve. Therefore, how to create a new bistable display device is one of the current important research and development topics, and it has also become a goal that the current industry needs to improve. Summary of the invention

[0005] The present invention provides a bistable display device, which effectively solves the above-mentioned prior art problems. The bistable display device and a matching driving device can ensure a normal display effect without installing a battery.

[0006] The present invention provides a bistable display device, which can be connected to a driving device for driving the bistable display device through a physical interface, and the bistable display device does not include a battery;

[0007] The bi-stable display device includes a display component, at least one first physical interface coupled to the display component, a first receiving circuit and a second receiving circuit;

[0008] The display assembly includes at least one driver IC;

[0009] The first physical interface comprises: a main body and a first physical connection portion and at least one electrical connection portion for physically docking with the drive device;

[0010] The electrical connection portion is coupled to the main body and extends outward from the main body, and the electrical connection portion includes at least one first electrical connection portion and at least one second electrical connection portion;

[0011] One end of the first receiving circuit is coupled to the at least one first electrical connection portion, and the other end is coupled to the driver IC. The first receiving circuit is configured to respond to a docking event with the driver device, and the response is used to receive a power signal provided by the connected driver device through the first electrical connection portion;

[0012] One end of the second receiving circuit is coupled to at least one second electrical connection portion, and the other end is coupled to the driver IC. The second receiving circuit is configured to respond to a docking event with the driver device, and the response is used to receive a display signal sent by the connected driver device through the second electrical connection portion.

[0013] Optional,

[0014] The driver IC is burned with an ID uniquely determined by the bistable display device;

[0015] The electrical connection portion further includes at least one third electrical connection portion;

[0016] When a docking event with the driving device occurs, the ID is read by the driving device through the third electrical connection portion.

[0017] Optional,

[0018] The driving IC is connected to a flexible printed circuit board, and the other end of the flexible printed circuit board is connected to the first electrical connection part and the second electrical connection part;

[0019] The flexible printed circuit board is connected to at least two pins of the driving IC, and the first electrical connection portion and the second electrical connection portion correspond to the at least two pins one by one.

[0020] Optional,

[0021] The flexible printed circuit board is connected to 24 pins of the driver IC;

[0022] The 24 electrical connections correspond to the 24 pins one by one.

[0023] Optional,

[0024] The bistable display device further includes a connecting member, which is used to connect the flexible printed circuit board to the first electrical connection portion and the second electrical connection portion respectively.

[0025] Optional,

[0026] The first physical interface includes at least one of a male connector and / or a female connector of USB-A, USB-B, Micro USB, Type-C, Lightning, HDMI, and a serial port;

[0027] Alternatively, pin headers and / or pin header holders.

[0028] Optional,

[0029] The electrical connection part includes the SPI interface, I 2 At least one of C interface, TTL interface, RS232, RS485, UART and I80 interface.

[0030] Optional,

[0031] A protective element with waterproof and dustproof functions is arranged at the interface of the first physical interface.

[0032] Optional,

[0033] The protective element is a wrapping portion capable of wrapping the first physical interface and / or an embedding portion capable of embedding into the first physical interface.

[0034] Optional,

[0035] The cross section of the first physical connection portion is symmetrical relative to the vertical axis.

[0036] Optional,

[0037] The cross section of the first physical connection portion is symmetrical relative to the horizontal axis.

[0038] The present invention also provides a driving device, which is used in conjunction with the above-mentioned bistable display device, and the driving device includes at least one second physical interface, a power supply circuit and a first sending circuit;

[0039] The second physical interface comprises a main body, a second physical connection portion for docking with the first physical connection portion of the bi-stable display device, and at least one electrical connection portion;

[0040] The electrical connection part is coupled to the main body and extends outward from the main body, and the electrical connection part includes at least one fourth electrical connection part and at least one fifth electrical connection part; the fourth electrical connection part is used to connect with the first electrical connection part, and the fifth electrical connection part is used to connect with the second electrical connection part;

[0041] The power supply circuit is coupled to the at least one fourth electrical connection portion, and the power supply circuit is configured to respond to a docking event with the bi-stable display device, and the response is used to provide a power signal to the connected bi-stable display device through the fourth electrical connection portion;

[0042] The first sending circuit is coupled to at least one fifth electrical connection portion, and the first sending circuit is configured to respond to a docking event with a bistable display device, wherein the response is used to send a display signal to the connected bistable display device through the fifth electrical connection portion, and the display signal is used for display by the bistable display device.

[0043] Optional,

[0044] The electrical connection portion further includes a sixth electrical connection portion, which is used to connect to the third electrical connection portion;

[0045] The driving device also includes a reading circuit and a first judgment circuit;

[0046] A reading circuit is coupled to at least one sixth electrical connection portion, and the reading circuit is configured to receive a first ID sent by the connected bistable display device, and a driver program of each bistable display device is programmed with an ID uniquely determined by the bistable display device, which is recorded as the first ID;

[0047] The first judgment circuit is coupled to the reading circuit, and the circuit is configured to judge whether the second ID of the bistable display device pre-stored locally is consistent with the first ID, and obtain a judgment result;

[0048] The first judgment circuit is coupled to the power supply circuit and the first sending circuit, and when the judgment result is yes, the power supply circuit and the first sending circuit are triggered to start working.

[0049] Optional,

[0050] The driving device also includes a third receiving circuit, which is used to receive a display signal provided by a signal source.

[0051] Optional,

[0052] The third receiving circuit has a wireless communication subunit, which is used for acquiring a display signal provided by a receiving signal source through a wireless connection channel.

[0053] Optional,

[0054] The driving device includes a third physical interface for physically connecting to a signal source, including a third physical connection portion and at least one seventh electrical connection portion;

[0055] The third receiving circuit is coupled to at least one seventh electrical connection portion, and is configured to receive a display signal provided by a signal source through at least one seventh electrical connection portion.

[0056] Optional,

[0057] The driving device includes a conversion circuit coupled to the third receiving circuit, the conversion circuit being configured to convert a first display signal that cannot be displayed by the bi-stable display device into a second display signal that can be displayed by the bi-stable display device.

[0058] Optional,

[0059] The second physical connection portion is also used to physically connect to the signal source;

[0060] The second physical interface includes an eighth electrical connection portion and a ninth electrical connection portion;

[0061] The driving device also includes a second judgment circuit, which is coupled to the eighth electrical connection part and the ninth electrical connection part respectively. The second judgment circuit is configured to respond to a docking event, which includes a docking event with a bistable display device or a signal source. The response is used to determine whether the connected external device is a bistable display device or a signal source. When the connected external device is a bistable display device, the docking event with the bistable display device is triggered through the eighth electrical connection part. When the connected external device is a signal source, the docking event with the signal source is triggered through the ninth electrical connection part.

[0062] Optional,

[0063] The second judgment circuit has a detection module, which is used to determine that the connected external device is a signal source when a power signal is detected, otherwise it is a bistable display device.

[0064] Optional,

[0065] The second physical interface includes at least one of a male connector and / or a female connector of a USB-A, USB-B, Micro USB, Type-C, Lightning, HDMI, and a serial port;

[0066] Or pin headers and / or pin header holders.

[0067] Optional,

[0068] A protective element with waterproof and dustproof functions is arranged at the interface of the second physical interface.

[0069] Optional,

[0070] The protective element is a wrapping portion capable of wrapping the second physical interface and / or an embedding portion capable of embedding the second physical interface.

[0071] Optional

[0072] The electrical connection part includes the SPI interface, I 2 At least one of C interface, TTL interface, RS232, RS485, UART and I80 interface.

[0073] Optional,

[0074] The driving device further includes: a connecting member, which is used to connect the flexible printed circuit board to the first electrical connection part and the second electrical connection part respectively.

[0075] Optional,

[0076] The cross sections of the second physical connection portion and the third physical connection portion are symmetrical with respect to the vertical axis.

[0077] Optional,

[0078] The cross sections of the second physical connection portion and the third physical connection portion are symmetrical relative to the horizontal axis.

[0079] Optional,

[0080] The driving device further comprises: a power supply battery and a boost circuit connected to the power supply battery, wherein the boost circuit boosts the voltage of the power supply battery to a power supply signal adapted to the voltage of the bistable display device.

[0081] The present invention also provides a display device, in which the above-mentioned bistable display device is installed in at least one of electronic tags, billboards, signboards, workstation signs, table signs, electronic menus, luggage tags, luggage labels, electronic cards, medical bedside cards, infusion cards, shelves, filing cabinets or book cabinets, and can be used in conjunction with the above-mentioned driving device.

[0082] Compared with the prior art, the present invention has the following beneficial effects:

[0083] Although the bistable display device does not include a battery, it can be connected to a driving device through a first physical interface. The bistable display device receives a power signal provided by the connected driving device through a first electrical connection by a first receiving circuit; and receives a display signal sent by the connected driving device through a second electrical connection by a second receiving circuit. The display component is driven by a display signal and a power signal. Since the bistable display device does not require high power, the size of the driving device can be as small as possible and is easy to carry. The size of the bistable display device that does not require a battery or an external power supply can be as small as possible, which is in line with the market requirements for lighter and thinner. It can be applied to electronic tags, billboards, signboards, workstation cards, table cards, electronic menus, luggage tags, luggage tags, electronic cards, medical bedside cards, infusion cards, shelves, filing cabinets or book cabinets and other scenarios. Taking electronic tags as an example, most of the electronic tags currently used in the market are installed with wireless communication modules, and data is sent by the server, then received by the communication module, and finally the communication module sends the data to the display screen for display. When the communication module receives the data, it will feedback to the server, and the server determines that the update of the electronic tag is successful. However, if the connection between the communication module and the display screen fails, or the display screen fails and the display fails, the server side cannot detect it. This requires manual verification, which greatly wastes human resources. In the present invention, the operator can directly see whether the electronic tag has been updated successfully, and the data update is 100% accurate. On the other hand, the existing electronic tags have built-in power supplies. If a supermarket needs 10,000 electronic tags and the cost of the battery is 1 yuan, then the cost of the battery alone is 10,000 yuan. However, in the present invention, the bistable display device has no power supply, which greatly saves costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0084] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0085] Figure 1 A schematic diagram of an application scenario of a bistable display device embodiment of the present invention;

[0086] Figure 2 is a schematic structural diagram of an embodiment of a bistable display device in the present invention;

[0087] Figure 3 is a schematic structural diagram of another embodiment of a bistable display device in the present invention;

[0088] Figure 4It is a left view of a schematic structural diagram of another embodiment of a bistable display device in the present invention;

[0089] Figure 5 It is a left view of a schematic structural diagram of another embodiment of a bistable display device in the present invention;

[0090] Figure 6 It is a left view of a schematic structural diagram of another embodiment of a bistable display device in the present invention;

[0091] Figure 7 is a schematic structural diagram of another embodiment of a bistable display device in the present invention;

[0092] Figure 8 A schematic diagram of the interface structure between an embodiment of a bistable display device and an embodiment of a driving device in the present invention;

[0093] Fig. 9 It is a structural schematic diagram of an embodiment of a driving device in the present invention;

[0094] Fig.10 It is a structural schematic diagram of another embodiment of the driving device in the present invention;

[0095] Fig.11 It is a structural schematic diagram of another embodiment of the driving device in the present invention;

[0096] Fig.12 A schematic diagram of an application scenario of another embodiment of the driving device in the invention;

[0097] Fig.13 It is a structural schematic diagram of another embodiment of the driving device in the present invention;

[0098] Fig.14 It is a structural schematic diagram of another embodiment of the driving device in the present invention;

[0099] Fig.15 It is a schematic structural diagram of a display device embodiment of the present invention. DETAILED DESCRIPTION

[0100] Hereinafter, embodiments of the present disclosure will be described with reference to the accompanying drawings. However, it should be understood that these descriptions are exemplary only and are not intended to limit the scope of the present disclosure. In addition, in the following description, descriptions of well-known structures and technologies are omitted to avoid unnecessary confusion of the concepts of the present disclosure.

[0101] The terms used herein are only for describing specific embodiments and are not intended to limit the present disclosure. The words "a", "an (kind)" and "the" used herein should also include the meanings of "multiple" and "multiple", unless the context clearly indicates otherwise. In addition, the terms "including", "comprising" and the like used herein indicate the presence of the features, steps, operations and / or components, but do not exclude the presence or addition of one or more other features, steps, operations or components.

[0102] All terms (including technical and scientific terms) used herein have the meanings commonly understood by those skilled in the art, unless otherwise defined. It should be noted that the terms used herein should be interpreted as having a meaning consistent with the context of this specification, and should not be interpreted in an idealized or overly rigid manner.

[0103] Some block diagrams and / or flow charts are shown in the accompanying drawings. It should be understood that some blocks or combinations thereof in the block diagrams and / or flow charts may be implemented by computer program instructions. These computer program instructions may be provided to a processing unit of a general-purpose computer, a special-purpose computer, or other programmable data processing device, so that these instructions, when executed by the processing unit, may create a device for implementing the functions / operations described in these block diagrams and / or flow charts.

[0104] Therefore, the technology of the present disclosure can be implemented in the form of hardware and / or software (including firmware, microcode, etc.). In addition, the technology of the present disclosure can take the form of a computer program product on a computer-readable medium storing instructions, which can be used by an instruction execution system or in combination with an instruction execution system. In the context of the present disclosure, a computer-readable medium can be any medium that can contain, store, transmit, propagate, or transmit instructions. For example, a computer-readable medium can include, but is not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device, device, or propagation medium. Specific examples of computer-readable media include: magnetic storage devices, such as magnetic tapes or hard disks (HDDs); optical storage devices, such as compact disks (CD-ROMs); memories, such as random access memories (RAMs) or flash memory; and / or wired / wireless communication links.

[0105] In order to solve the above technical problem, the present invention provides an embodiment of a bistable display device,

[0106] See also Figure 1-Figure 3 The bistable display device 100 is used in conjunction with a driving device 200 . The bistable display device 100 does not contain a battery and does not require an external power line. The driving device 200 can drive the bistable display device 100 .

[0107] It should be noted that the bistable display device 100 has a bistable characteristic, that is, it consumes power only when the image changes, and does not consume power when displaying a static image. The bistable display device 100 uses reflected ambient light to allow viewers to see the displayed image clearly, and has the characteristics of high contrast, 180° wide viewing angle, thin module thickness, reusability and environmental protection.

[0108] The bistable display device 100 includes a display component 101, a first physical interface 102, a first receiving circuit 103 and a second receiving circuit 104. The display component 101 includes at least one driver IC 1011. It should be noted that the driver chip 1011 is not limited to a central processing unit (CPU), or other programmable general-purpose or special-purpose microprocessors (Microprocessors), digital signal processors (Digital Signal Processors, DSPs), programmable controllers, application specific integrated circuits (Application Specific Integrated Circuits, ASICs), programmable logic devices (Programmable Logic Devices, PLDs), other similar processing circuits or combinations of these circuits. The driver IC 1011 can be designed to be suitable for a custom communication protocol.

[0109] In this embodiment, the first physical interface 102 can be arranged at a non-display surface, that is, a surface without a display screen. When the first physical interface 102 is turned on, it is considered that a transmission link is established with the driving device 200, and a docking event is triggered.

[0110] The first physical interface 102 includes: a main body and a first physical connection portion 1021 for physically docking with the drive device 200 and at least one electrical connection portion;

[0111] The electrical connection portion is coupled to the main body and extends outward from the main body, and the electrical connection portion includes at least one first electrical connection portion 1022A and at least one second electrical connection portion 1022B.

[0112] In this embodiment, the electrical connection part refers to the contact or lead in the physical interface, which can be connected or coupled with other circuits through welding or other physical connection methods. The first electrical connection part 1022A and the second electrical connection part 1022B are two types of electrical connection parts that realize different functions in this embodiment. It can be understood that the first electrical connection part 1022A and the second electrical connection part 1022B can be contacts or wires with the same appearance and structure, and the electrical connection parts can be configured in different quantities according to actual needs. It can be understood that the first electrical connection part 1022A and the second electrical connection part 1022B can also be different structures.

[0113] One end of the first receiving circuit 103 is coupled to the at least one first electrical connection portion 1022A, and the other end is coupled to the driving IC 1011. The first receiving circuit 103 is configured to respond to a docking event with the driving device 200, and the response is used to receive a power signal provided by the connected driving device 200 through the first electrical connection portion 1022A;

[0114] One end of the second receiving circuit 104 is coupled to at least one second electrical connection portion 1022B, and the other end is coupled to the driver IC 1011. The second receiving circuit 104 is configured to respond to a docking event with the driver device 200, and the response is used to receive a display signal sent by the connected driver device 200 through the second electrical connection portion 1022B.

[0115] In this embodiment, although the bistable display device 100 does not include a battery, it can be connected to the driving device 200 through the first physical interface 102. The bistable display device 100 receives the power signal provided by the connected driving device 200 through the first electrical connection portion 1022A by the first receiving circuit 103; and receives the display signal sent by the connected driving device 200 through the second electrical connection portion 1022B by the second receiving circuit 104. IC1011 drives the display component 101 through the display signal and the power signal. Since the bistable display device does not require high power, the size of the driving device can be as small as possible and is easy to carry. The size of the bistable display device that does not require a battery or an external power supply can be as small as possible, which is in line with the market requirements for lighter and thinner.

[0116] Another embodiment of a bi-stable display device provided by the present invention is different from the above-mentioned embodiment in that: the first physical interface 102 includes a Universal Serial Bus (USB) interface, specifically including USB-A, USB-B, Micro USB, and Type-C. It further includes at least one of the Lightning interface used in Apple mobile phones, High Definition Multimedia Interface (HDMI), USB-A, USB-B, Micro USB, Type-C, Lightning, HDMI, and male and / or female connectors or pin headers and / or pin header sockets of a serial port, and the combinations that can be generated include:

[0117] 1. The physical interfaces of the driving device and the bistable display device are both installed with male connectors, and can be connected by a data cable with female connectors at both ends;

[0118] 2. The physical interfaces of the driving device and the bistable display device are both equipped with female connectors, and can be connected using a data cable with male connectors at both ends;

[0119] 3. The physical interface of the driving device is a male connector, and the physical interface of the bistable display device is a female connector. Then, the display device can be plugged into the driving device, and of course, the two can be connected by a data cable with a male connector at one end and a female connector at the other end;

[0120] 4. The physical interface of the bistable display device is a female connector, and the physical interface of the driving device is a male connector. Then, the driving device can be inserted into the display device. The applicant has found through research that this structure is more suitable for the needs of actual application scenarios;

[0121] 5. The physical interfaces of the driving device and the bistable display device are both equipped with pin headers, and can be connected using a data cable with pin headers at both ends;

[0122] 6. The physical interfaces of the driving device and the bistable display device are both equipped with pin headers, and can be connected using a data cable with pin headers at both ends;

[0123] 7. The physical interface of the driving device is a pin header, and the physical interface of the bistable display device is a pin header socket. Therefore, the display device can be plugged into the driving device, and of course the two can be connected by a data cable with a pin header at one end and a pin header socket at the other end;

[0124] 8. The physical interface of the bistable display device is a pin header, and the physical interface of the driving device is a pin header. Then, the driving device can be inserted into the display device. The applicant has found through research that this structure is more suitable for the needs of actual application scenarios.

[0125] Compared with solutions 1-4, solutions 5-8 can set the size of the physical interface to be smaller. Although the size of the physical interface of solution 1-4 is slightly larger than that of solution 5-8, it is more convenient for docking.

[0126] Another embodiment of a bistable display device provided by the present invention is different from the aforementioned embodiment in that: in this embodiment, the display component 100 includes: an electrophoretic display panel (EPD), an electrowetting display panel (EWD), a cholesteric liquid crystal display panel (CLCD) or other bistable display panels (Bi-stable display panel), but the present invention is not limited thereto.

[0127] The core element of the electrophoretic display panel in this embodiment is the electrophoretic pigment particles, whose particle size distribution, surface morphology, δ-potential, optical properties and chemical properties all play a key role in the contrast, response time, clarity and service life of the electronic paper. The electrophoretic display technology uses the electrophoresis principle in colloid chemistry to stably disperse the charged pigment particles in a non-aqueous dispersion medium containing a dye, so that the dispersed phase and the dispersion medium present a contrast. Under the action of the electric field, the charged pigment ions move to the electrode surface to display the image.

[0128] In this embodiment, a structure of the electrophoretic pigment particles includes a core and a shell, wherein the core is a pigment particle, and the shell includes a polymer and a coupling agent for coupling the polymer and the pigment particle. The pigment particles include positively charged pigment particles, negatively charged pigment particles, or neutral pigment particles, specifically one or a combination of two or more of carbon black, copper chromium black, copper iron manganese black, iron black, titanium dioxide, zinc white, barium sulfate, red iron oxide, yellow iron oxide, ultramarine blue, chrome yellow, cadmium red, manganese violet, chrome green, iron blue, and cobalt blue. The coupling agent is one or a combination of two or more of 3-aminopropyltriethoxysilane (KH550), γ-(2,3-epoxypropyloxy)propyltrimethoxysilane (KH560), γ-(methacryloyloxy)propyltrimethoxysilane (KH570), γ-mercaptopropyltrimethoxysilane (KH580), N-β-(aminoethyl)-γ-aminopropyltrimethoxysilane (KH792), vinylbenzylaminoethylaminopropyltrimethoxysilane (VAPMS) and isopropyltrioleyloxytitanate. In order to ensure that the average particle size of the electrophoretic pigment particles meets the requirements, the applicant needs to micronize the electrophoretic pigment particles. In practical applications, grinding, crushing, ultrasound or solvent dispersion can be used to achieve this. Related equipment may include colloid mills, ball mills, freeze crushers, ultrasonic machines, etc.

[0129] The main components of the electrophoretic liquid include but are not limited to dispersants, thickeners, surface tension control agents and charge control agents. The dispersants include various non-polar and / or low-polar organic solvents and mixtures thereof, low-grade dispersing solvents include but are not limited to various aromatic hydrocarbons such as toluene, benzene, xylene, and halogenated hydrocarbons such as but not limited to chloroform, tetrachloroethylene, etc.; non-polar dispersing solvents include but are not limited to linear, branched and cyclic aliphatic hydrocarbons, such as n-hexane, nonane, deuterane, synthetic isomerized paraffin (Isopar), synthetic paraffin (Norpar), synthetic cycloalkanes (Nappar), synthetic alkanes (Varsol / Naphtha), cyclohexane and halogenated hydrocarbons such as carbon tetrachloride; thickeners can be non-polar polymers, including but not limited to polymethacrylic acid Methyl ester, polyethylene, polypropylene, rubber such as polyisoprene, polyisobutylene, etc., among which polymethyl methacrylate, polyisoprene, polyisobutylene are the best choices; in addition, the surface tension control agent can be selected from one or more of monostearate glycerol, distearate ethyl hydroxyethyl methyl ammonium sulfate, tristearate ethyl hydroxyethyl methyl ammonium sulfate, Span20, Span40, Span60, Span80, Tween85, alkyl tertiary amine salts; the charge control agent can be organic sulfate, sulfonate, metal soap, organic amide, organic phosphate or phosphate, and can also be polymers and block or graft copolymers and their monomers. Polyisobutylene succinimide, metal saponification and lecithin poly or isobutylene and silicone derivatives can be selected as charge control agents.

[0130] The electrophoretic liquid and the electrophoretic pigment particles dispersed in the electrophoretic liquid are wrapped in the display unit, thereby effectively inhibiting the agglomeration of the electrophoretic pigment particles and improving the stability and service life of the display device. In this embodiment, the display unit may include at least one of a microcapsule and a microcup. The microcapsule in this embodiment includes the above-mentioned electrophoretic liquid, the electrophoretic pigment particles dispersed in the electrophoretic liquid, and at least one layer of capsule wall, wherein the capsule wall is a capsule wall formed by a complex coacervation method or a capsule wall formed by an in-situ polymerization method. It should be noted that in-situ polymerization can also be called an interfacial polymerization method, and urea-formaldehyde resin or modified urea-formaldehyde resin is used as a microcapsule wall material; in the complex coacervation method, gelatin and gum arabic are used as microcapsule wall materials. The microcup in this embodiment includes an electrophoretic liquid, electrophoretic pigment particles dispersed in the electrophoretic liquid, and a microcup, and the microcup may be a column with a small size, a cavity, and sealed upper and lower surfaces. The microcup is formed by microcup roller die casting and ultraviolet curing, and then the electrophoretic pigment particles in the electrophoretic liquid are encapsulated in the microcup by a specific method.

[0131] The structure of the display device in this embodiment includes but is not limited to a display layer containing a solidifying medium, an electrophoretic liquid distributed in the solidifying medium, and at least one electrophoretic pigment particle dispersed in the electrophoretic liquid; the display layer is connected to the transparent conductive layer via an adhesive.

[0132] One preparation method of the display layer in this embodiment is to mix a transparent adhesive, a display unit containing electrophoresis liquid such as microcapsules or microcups, and other solvents in a predetermined ratio, stir the obtained mixture evenly, and then coat it on a substrate. In the actual processing, the mixture can be coated on the substrate through a slit extrusion coating process. The slit extrusion coating process can be that the coating material is pressurized by a metering pump, extruded from the extrusion port of the coating die head, and coated on the surface of the substrate. The thickness of the coating layer can be determined according to the coating extrusion amount of the coating die head and the running speed of the substrate. The applicant can preset the gap of the extrusion port and the distance between the extrusion port and the back roller, so as to control this process. Then it enters the curing process. It can be understood that the curing process can be achieved at room temperature. In order to accelerate the curing speed, rapid curing can be achieved through conventional curing means such as heating, air box drying or light curing. It is worth noting that coating methods such as knife coating, casting coating, brush coating, roll coating, spraying, powder coating, as well as screen printing and inkjet printing processes can also be used to replace the slit extrusion coating process. The adhesives mentioned in this embodiment include waterborne polyurethane emulsion or solvent-based polyurethane emulsion, specifically including but not limited to one or more combinations of polyester diol, polyether diol, polyethylene glycol, small molecule chain extender and diisocyanate. The transparent conductive layer can be ITO (Indium Tin Oxides), also known as a semiconductor transparent conductive film, which is obtained by forming a transparent indium tin oxide (ITO) conductive thin film coating on transparent organic thin film materials such as PET (Polyethylene terephthalate), PE (polyethylene), PP (polypropylene), etc. and performing high-temperature annealing treatment. The preparation methods of ITO transparent conductive thin films include but are not limited to processes such as evaporation, sputtering, reactive ion plating, chemical vapor deposition or pyrolytic spraying. In practical applications, ITO transparent conductive thin films can be replaced by conductive thin films such as graphene, silver powder or nanosilver wires. Since graphene has extremely high advantages in conductivity and hardness, it is suitable for making conductive films. The preparation methods of this graphene conductive film include but are not limited to chemical vapor deposition method and reduction oxidation method. Chemical vapor deposition can obtain large-area single-layer graphene with good quality, and has performance advantages in light transmittance and sheet resistance, but has defects such as complex process route, high cost, low yield, and limited film area. The reduction oxidation method adopts a solution process, which is convenient for achieving large-area continuous preparation through a roll-to-roll process and has great advantages in cost. This silver powder conductive film uses silver conductor paste as the main material, in which silver powder is used as the conductive functional material, mainly utilizing the conductivity and thermal conductivity of silver powder. Silver powder can be divided into coarse silver powder and nanosilver wires according to the particle size. Among them, the average particle size <0.1μm is nanosilver wire; 0.1μm < Dav < 10.0μm is coarse silver powder.In addition to the excellent conductivity of silver, nano silver wires also have excellent light transmittance and flexibility due to their nanoscale size advantages, so they can also be used as a preferred material to replace ITO.

[0133] See also Figure 2 and Figure 3 Another embodiment of a bistable display device provided by the present invention is different from the above-mentioned embodiment in that:

[0134] The driving IC 1011 is connected to a flexible printed circuit board 1012, and the other end of the flexible printed circuit board 1012 is connected to the first electrical connection part 1022A and the second electrical connection part 1022B;

[0135] The flexible printed circuit board 1012 is connected to at least two pins of the driving IC 1011 , and the first electrical connection portion 1022A and the second electrical connection portion 1022B correspond to the at least two pins one by one.

[0136] In this embodiment, the bistable display device 100 may have a substrate, and the driver IC 1011 may be mounted on the substrate. The substrate may be a glass substrate or a TFT substrate according to actual applications. A glass substrate may be used, and a fixed pattern may be set on the glass substrate for segment code display. At this time, the FPC 1012 has a minimum of two pins connected to the driver IC 1011, which may be VDD and VSS. For example, when the bistable display device 100 is used as a traffic sign, the display content only includes a background color and a traffic sign graphic.

[0137] When dot matrix display technology is used, a TFT substrate can be used, and the FPC1012 can have at least 14 pins connected to IC1011. The 14 pins can be defined as functions such as control, detection, reset, data transmission, grounding and power supply. Among them, GDR is a control switch tube, RESE is used to control the boost current, RSTN is reset, CSB, SCL and SDA are all SPI data transmission, VDD is used to power the driver IC, VSS is grounded, VDDD is used to power the 1.8V working voltage in the driver IC, and VSH, VGH, VSL, VGL and VCOM are all used to power the display component 101.

[0138] It should be noted that different data interface types are selected, and the pins of the FPC are also different, including 2, 6, 14, 24 and 34 pins, etc. Therefore, the physical interface can use a cable or pin header that is convenient to control the number, and then fix the cable or pin header and solder each cable or pin header to the pin of the FPC one by one.

[0139] Another embodiment of a bistable display device provided by the present invention is different from the above-mentioned embodiment in that: the flexible printed circuit board 1012 is connected to 24 pins of the driver IC 1011; and the 24 electrical connection parts correspond to the 24 pins one by one.

[0140] The FPC 1012 used in this embodiment connects all 24 pins of IC 1011. The applicant has found that the contact points of type-C are also 24 pins. The FPC and type-C interface can be welded and packaged through SMT packaging technology. Specifically, you can choose to use the male or female head of the type-C interface for matching in the application. The combination of the physical interface has been described in the previous embodiment and will not be repeated here.

[0141] See also Figure 2 Another embodiment of a bistable display device provided by the present invention is different from the aforementioned embodiment in that: the bistable display device 100 further includes a connector 1023, which is used to connect the flexible printed circuit board 1012 to the first electrical connection portion 1022A and the second electrical connection portion 1022B respectively.

[0142] It should be noted that the FPC 1012 is connected to the first electrical connection part 1022A and the second electrical connection part 1022B through a connector. Specifically, the first electrical connection part 1022A and the second electrical connection part 1022B are welded to the corresponding terminals of the terminal clamp. After the terminal clamp is opened, the FPC 1012 is inserted into the terminal clamp 110, and then the terminal clamp is buckled.

[0143] Another embodiment of a bistable display device provided by the present invention is different from the above-mentioned embodiment in that: the electrical connection portion includes an SPI interface, an I 2 At least one of C interface, TTL interface, RS232, RS485, UART and I80 interface.

[0144] In this embodiment, the electrical connection part can adopt a mobile display port (MyDP, MobilityDisplayPort) in actual application, or a serial peripheral interface (SPI, Serial Peripheral Interface), a two-wire serial bus (I2C, Inter-Integrated Circuit), a transistor logic circuit (TTL, Transistor-Transistor Logic) and ITL80.

[0145] Another embodiment of a bistable display device provided by the present invention is different from the above-mentioned embodiment in that:

[0146] A protective element with waterproof and dustproof functions is disposed at the interface of the first physical interface 102 .

[0147] The protective element is a wrapping portion capable of wrapping the first physical interface 102 and / or an embedding portion capable of embedding the first physical interface 102 .

[0148] In this embodiment, a protective member with waterproof and dustproof functions is provided at the interface of the first physical interface 102. The protective member can protect the first physical interface 102 and prolong its service life. The protective member is a wrapping part that can wrap the first physical interface 102 and / or an embedding part that can be embedded in the first physical interface 102. The external wrapping structure can ensure the secure connection of the first physical interface and reduce losses, while the internal embedded part ensures the stability of the connection and can ensure safety.

[0149] Another embodiment of a bistable display device provided by the present invention is different from the above-mentioned embodiment in that:

[0150] The cross section of the first physical connection portion 1021 is symmetrical with respect to the vertical axis.

[0151] The cross section of the first physical connection portion 1021 is symmetrical with respect to the horizontal axis.

[0152] See also Figure 4-6 , the first physical connection part 1021 can be symmetrical relative to both the longitudinal axis and the horizontal axis. For example, a rectangle, a square, a circle, an ellipse, etc. Such a structure can facilitate the docking of the male head and the female head with the shape of the physical interface. Further, the cross-section of the first physical connection part 1021 can be an isosceles triangle, an isosceles trapezoid, or other figures symmetrical about the longitudinal axis, such as a variation of a rectangle, in which the two corners located in the long side direction are rounded. Such a structure helps to prevent the occurrence of inverted docking.

[0153] See also Figure 7 Another embodiment of a bistable display device provided by the present invention is different from the above-mentioned embodiment in that:

[0154] The driver IC 1011 is programmed with an ID uniquely identified with the bistable display device 100;

[0155] The electrical connection portion further includes at least one third electrical connection portion 1022C;

[0156] When a docking event with the driving device 200 occurs, the ID is read by the driving device 200 through the third electrical connection portion 1022C.

[0157] In this embodiment, the driver IC 1011 of each bistable display device 100 is burned with a uniquely determined ID. Since the bistable display device in this embodiment cancels the circuit board for installing the battery, the ID is burned on the driver IC 1011. For example, the ID of the first bistable display device is A101, the ID of the second bistable display device is A102... The ID of the Nth bistable display device is Njik. Each ID is different. The ID can be burned on the driver IC when the bistable display device is processed to distinguish different bistable display devices. The setting rules of the specific ID can be set according to the actual required quantity and batch, and are not specifically limited here. Taking the application scenario of electronic tags as an example, a wide variety of goods require a plurality of electronic tags corresponding to each product. Before labeling the corresponding goods, the ID of each tag needs to be entered into the information source, such as a computer or a mobile phone. The specific entry method may include but is not limited to laser printing the ID or ID barcode on the shell of the electronic tag, or displaying a barcode or QR code on the display screen of the driving device. It is read through the camera of a mobile phone or computer, and then identified by its recognition software, and the ID is extracted and saved in the mobile phone or computer. The specific application scenario can be that when several electronic tags need to be replaced, the ID of the tag can be entered into the mobile phone first, and the relationship between the ID and the product can be bound in the mobile phone. For example, the product name corresponding to the electronic tag with ID 1871601 is IPHONE12, and the product name corresponding to the electronic tag with ID 1871602 is IPHONE12 POR, and then the product name is bound to the product information. The drive device connects to the mobile phone to obtain the binding relationship between the ID and the product information, and the binding relationship can be a set of lists. After the drive device is connected to the electronic tag, the drive device 200 finds the ID in the IC according to the predetermined protocol and secret key and reads the ID, and then compares it with the ID in the table. When there is a consistent ID, the drive device sends the display information corresponding to the ID to the electronic tag.

[0158] The present invention further provides an embodiment of a driving device, which is used in conjunction with the above-mentioned bistable display device. The following will be described in conjunction with the embodiment of the above-mentioned bistable display device. Figure 8 and Fig. 9 ,

[0159] The driving device 200 includes at least one second physical interface 201, a power supply circuit 202 and a first sending circuit 203;

[0160] The second physical interface 201 includes a main body, a second physical connection portion 2011 for docking with the first physical connection portion 1021 of the bi-stable display device 100, and at least one electrical connection portion;

[0161] The electrical connection portion is coupled to the main body and extends outward from the main body, and includes at least one fourth electrical connection portion 2012A and at least one fifth electrical connection portion 2012B; the fourth electrical connection portion 2012A is used to connect with the first electrical connection portion 1022A, and the fifth electrical connection portion 2012B is used to connect with the second electrical connection portion 1022B;

[0162] The power supply circuit 202 is coupled to the at least one fourth electrical connection portion 2012A, and the power supply circuit 202 is configured to respond to a docking event with the bi-stable display device 100, and the response is used to provide an electrical power signal to the connected bi-stable display device 100 through the fourth electrical connection portion 2012A;

[0163] The first sending circuit 203 is coupled to at least one fifth electrical connection portion 2012B, and the first sending circuit 203 is configured to respond to a docking event with the bistable display device 100, and the response is used to send a display signal to the connected bistable display device 100 through the fifth electrical connection portion 2012B, and the display signal is used for the bistable display device 100 to display.

[0164] In this embodiment, the second physical connection part 2011 of the driving device 200 is connected to the first physical connection part 1021 of the bi-stable display device 100, the fourth electrical connection part 2012A is connected to the first electrical connection part 1022A, and the fifth electrical connection part 2012B is connected to the second electrical connection part 1022B, triggering the docking event between the driving device 200 and the bi-stable display device 100. The power supply circuit 202 of the driving device 200 sends the power signal to the bi-stable display device 100 through the channel formed by the fourth electrical connection part 2012A and the first electrical connection part 1022A, which is received by the first receiving circuit 103 and sent to the driving IC 1011. Similarly, the first sending circuit 203 of the driving device 200 sends the display signal to the bi-stable display device 100 through the channel connected by the fifth electrical connection part 2012B and the second electrical connection part 1022B, which is received by the second receiving unit 104 and sent to the driving IC 1011. IC1011 drives the display component 101 through display signals and power signals. Since the bistable display device does not require high power, the size of the driving device can be as small as possible, which is easy to carry. The bistable display device that does not require batteries or external power can be as small as possible, which meets the market requirements for lighter and thinner devices.

[0165] In this embodiment, the power signal required by the bistable display device 100 is 12V, 15V or 20V. Since the driving device 200 is powered by a 3V button battery, the driving device 200 is equipped with a boost circuit for boosting 3V to 12V, 15V or 20V. The specific structure of the boost circuit is not limited here.

[0166] See also Fig.10 Another embodiment of a driving device provided by the present invention is different from the above-mentioned embodiment in that:

[0167] The electrical connection portion further includes a sixth electrical connection portion 2012C, which is used to connect to the third electrical connection portion 1022C;

[0168] The driving device 200 further includes a reading circuit 204 and a first judging circuit 205;

[0169] The reading circuit 204 is coupled to at least one sixth electrical connection portion 2012C, and the reading circuit 204 is configured to receive a first ID sent by the connected bistable display device 100, and the driver IC 1011 of each bistable display device 100 is burned with an ID uniquely determined by the bistable display device 100;

[0170] The first judgment circuit 205 is coupled to the reading circuit 204, and the circuit is configured to judge whether the second ID of the bistable display device 100 pre-stored locally is consistent with the first ID, and obtain a judgment result;

[0171] The first judgment circuit 205 is coupled to the power supply circuit 202 and the first sending circuit 203 , and when the judgment result is yes, the power supply circuit 202 and the first sending circuit 203 are triggered to start working.

[0172] In this embodiment, the second physical connection part 2011 of the driving device 200 is connected to the first physical connection part 1021 of the bistable display device 100, and after the sixth electrical connection part 2012C is connected to the third electrical connection part 1022C, the reading circuit 204 of the driving device 200 receives the ID sent by the first sending circuit of the bistable display device 100 through the channel connecting the sixth electrical connection part 2012C and the third electrical connection part 1022C. For the convenience of distinction, this ID is recorded as the first ID. The first judgment circuit 205 judges whether the second ID of the bistable display device 100 pre-stored locally is consistent with the first ID, and obtains a judgment result. This judgment result includes yes or no. When the judgment result is yes, the power supply circuit 202 and the first sending circuit 203 are triggered to start working.

[0173] The following example is used to illustrate. For example, the ID of the first bistable display device is A101, the ID of the second bistable display device is A102... The ID of the Nth bistable display device is Njik. Each ID is different. The ID can be burned on the driver IC when the bistable display device is processed to distinguish different bistable display devices. The setting rules of the specific ID can be set according to the actual quantity and batch required, and are not specifically limited here. Taking the application scenario of electronic tags as an example, a wide variety of goods require a plurality of electronic tags to correspond to each product. Before labeling the corresponding goods, the ID of each label needs to be entered into the information source, such as a computer or mobile phone. The specific entry method may include but is not limited to laser printing the ID or ID barcode on the shell of the electronic tag, or displaying a barcode or QR code on the display screen of the electronic device. It is read through the camera of a mobile phone or computer, and then recognized by its recognition software, and the ID is extracted and saved in the mobile phone or computer. A specific application scenario may be that when several electronic tags need to be replaced, the ID of the tag can be entered into the mobile phone first, and the relationship between the ID and the product can be bound in the mobile phone. For example, the product name corresponding to the electronic tag with ID 1871601 is IPHONE12, and the product name corresponding to the electronic tag with ID 1871602 is IPHONE12 POR, and then the product name is bound to the product information. The physical interface connects the mobile phone to obtain the binding relationship between the ID and the product information, and the binding relationship can be a set of lists. The drive device 200 obtains the list, and how to obtain it will be described in subsequent embodiments. If the first ID is 1871601, the first judgment circuit 205 traverses the list and determines that the first ID 1871601 has a consistent ID 1871601 corresponding to it in the list. This then triggers the power supply circuit 202 and the first sending circuit 203 to start working, that is, the power supply circuit 202 provides a power signal, and the first sending circuit 203 sends the display signal containing the IPHONE12 product information corresponding to ID1871601 to the bistable display device 100 for display.

[0174] It should be noted that, in order to remind the user of the judgment result, the first judgment circuit 205 can be connected to a device such as a buzzer, an indicator light or a speaker. For example, when the judgment result is yes, the indicator light is on, or different colors of indicator lights are used for distinction, the green light is on to indicate that the judgment result is yes, the red light is on to indicate that the judgment result is no, accompanied by a buzzer sounding, or a voice reminder, etc. No specific limitation is made here.

[0175] See also Fig.11 Another embodiment of a driving device provided by the present invention is different from the above-mentioned embodiment in that:

[0176] The driving device includes a third receiving circuit 207 for receiving a display signal provided by a signal source 300 .

[0177] The third receiving circuit 207 may have a wireless communication subunit for acquiring the display signal provided by the receiving signal source 300 through a wireless connection channel. Wireless communication includes Zig-Bee, UWB, Wi-Fi), Bluetooth, NFC, CDMA 3G, 4G, 5G, etc.

[0178] See also Fig.11 and 12 , the driving device further comprises a third physical interface 206 for physically connecting with the signal source 300, comprising a third physical connection portion 2061 and at least one seventh electrical connection portion 2062A;

[0179] The third receiving circuit 207 is coupled to at least one seventh electrical connection portion 2062A. The third receiving circuit 207 is configured to receive a display signal provided by the signal source 300 through the at least one seventh electrical connection portion 2062A.

[0180] In this embodiment, the second physical interface 201 and / or the third physical interface 206 can be connected to the body via a data line. The second physical interface 201 and / or the third physical interface 206 can also be movably connected to the body, and the second physical interface 201 and / or the third physical interface 206 can be received in the housing of the driving device or extend out of the housing.

[0181] See also Fig.13 Another embodiment of a driving device provided by the present invention is different from the above-mentioned embodiment in that:

[0182] The driving device 100 includes a conversion circuit 208 coupled to the third receiving circuit 207 , and the conversion circuit 208 is configured to convert a first display signal that the bi-stable display device 100 cannot display into a second display signal that the bi-stable display device 100 can display.

[0183] In this embodiment, the driving device 200 can receive the display parameters of the bistable display device to be connected when connecting to the signal source 300, and then convert the first display signal to obtain the second display signal according to the display parameters. In this embodiment, the driving device 200 can also generate a display parameter acquisition request when connecting to the bistable display device 100, and the display parameter request is used to request the display parameters of the display device from the connected bistable display device 100.

[0184] It should be noted that the display parameters include physical size, resolution, display color bit depth, etc. The physical size may include the specific values ​​of the length and width of the display device. The resolution may include the pixels, row pixel number and / or column pixel number included in the display device. The color bit number indicates how many bits of a pixel of the display device are used to indicate the color. Generally, the more bits there are, the richer the colors of the display device, and the more types of colors that can be displayed. In this embodiment, the display device may be a black and white display screen or a color display screen. Generally, when the display device is a black and white display screen, the display parameters may not include the color bit number.

[0185] See also Fig.14 Another embodiment of a driving device provided by the present invention is different from the above-mentioned embodiment in that:

[0186] The second physical connection portion 2011 is also used to physically connect with the signal source 300;

[0187] The second physical interface 201 includes an eighth electrical connection portion 2012D and a ninth electrical connection portion 2012E;

[0188] The driving device 200 also includes a second judgment circuit 209, which is coupled to the eighth electrical connection portion 2012D and the ninth electrical connection portion 2012E respectively. The second judgment circuit is configured to respond to a docking event, which includes a docking event with the bistable display device 200 or with the signal source 300. The response is used to determine whether the connected external device is the bistable display device 100 or the signal source 300. When the connected external device is the bistable display device 100, the docking event with the bistable display device 100 is triggered through the eighth electrical connection portion 2012D. When the connected external device is the signal source 300, the docking event with the signal source 300 is triggered through the ninth electrical connection portion 2012E.

[0189] This embodiment provides a solution with only one physical interface. Only one physical interface can be connected to both the bistable display device 100 and the signal source 300. The second judgment circuit 209 determines whether the connected external device is the bistable display device 100 or the signal source 300. When the connected external device is the bistable display device 100, the eighth electrical connection portion 2012D triggers a connection event with the bistable display device 100. When the connected external device is the signal source 300, the ninth electrical connection portion 2012E triggers a connection event with the signal source 300.

[0190] It should be noted that there are multiple technical solutions for determining whether the connected external device is the bistable display device 100 or the signal source 300. One of them is described here. Since the bistable display device 100 is not equipped with a battery, no power signal can be detected. A detection module is provided in the second judgment circuit 209 to determine that the connected external device is the signal source 300 when a power signal is detected, otherwise it is the bistable display device 100.

[0191] It should be noted that the second physical interface 201, the third physical interface 206 and the first physical interface 102 of the drive device 200 in this embodiment can use the same type of interface, so the second physical interface 201 and the third physical interface 206 are applicable to the various descriptions of the first physical interface 102 in the above embodiment, including:

[0192] The second physical interface 201 and the third physical interface 206 include Universal Serial Bus (USB) interfaces, specifically including USB-A, USB-B, Micro USB, and Type-C. They further include at least one of the male and / or female connectors or pin headers and / or pin headers of USB-A, USB-B, Micro USB, Type-C, Lightning, and HDMI, such as the Lightning interface used by Apple mobile phones, and the High Definition Multimedia Interface (HDMI).

[0193] Optionally, the electrical connection portion includes an SPI interface, an I 2 At least one of a C interface, a TTL interface, an RS232, an RS485, a UART and an I80 interface. In practical applications, the electrical connection portion may adopt a mobility display port (MyDP), a serial peripheral interface (SPI), an inter-integrated circuit (I2C), a transistor-transistor logic (TTL) and I80 (Intel's standard interface).

[0194] Optionally, a protective member with waterproof and dustproof functions is provided at the interface of the second physical interface 201 and the third physical interface 206. The protective member is a wrapping part capable of wrapping the physical interface and / or an embedding part capable of embedding the physical interface.

[0195] A protective member with waterproof and dustproof functions is provided at the interface of the second physical interface 201 and the third physical interface 206. The protective member is a wrapping part capable of wrapping the physical interface and / or an embedding part capable of embedding the physical interface.

[0196] Optionally, the cross-sections of the second physical connection portion 2011 and the third physical connection portion 2061 can be symmetrical relative to both the longitudinal axis and the horizontal axis. For example, a rectangle, square, circle, ellipse, etc. Such a structure can facilitate the docking of the male and female heads with the shape of the physical interface. The cross-sectional shape of the second physical connection portion 2011 and the third physical connection portion 2061 can be an isosceles triangle, an isosceles trapezoid, or other figures symmetrical about the longitudinal axis, such as a variation of a rectangle in which the two corners located in the long side direction are rounded. Such a structure helps prevent the occurrence of inverted docking.

[0197] The present invention also provides a device for installing the above-mentioned bistable display device 100 in at least one of an electronic tag, a billboard, a signboard, a workstation sign, a table sign, an electronic menu, a luggage tag, a luggage label, an electronic card, a medical bedside card, an infusion card, a shelf, a filing cabinet or a bookcase, etc., which can be used in conjunction with the above-mentioned drive device 200. The bistable display device can be detachably connected to the above-mentioned display device, and can also be integrally formed with the above-mentioned display device. The physical interface can be set not only on the bistable display device 100, but also on the housing of an electronic tag, a billboard, a signboard, a workstation sign, a table sign, an electronic menu, a luggage tag, a luggage label, an electronic card, a medical bedside card or an infusion card.

[0198] Or, on shelves, filing cabinets, bookcases and other racks or cabinets, taking shelves as an example, Fig.15 The shelf A has a frame body A1 and a support plate A2 mounted on the frame body A1 for placing goods. The bistable display device 100 can be mounted on the front or side of the frame body A1 and / or the support plate A2. The physical interface A3 can be mounted on the bistable display device 100 or on any surface of the frame body A1 and / or the support plate A2.

[0199] Through the specific description of the above embodiments, those skilled in the art can clearly understand that each implementation method can be implemented by means of software plus a necessary general hardware platform, and of course, it can also be implemented by hardware. Based on such an understanding, the above technical solution can be essentially or partly contributed to the prior art in the form of a software product, and the computer software product can be stored in a computer-readable storage medium, and the storage medium includes a read-only memory (ROM), a random access memory (RAM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), a one-time programmable read-only memory (OTPROM), an electronically erasable rewritable read-only memory (EEPROM), a compact disc (CD-ROM) or other optical disc storage, a magnetic disk storage, a magnetic tape storage, or any other computer-readable medium that can be used to carry or store data.

[0200] Finally, it should be noted that the bistable display device, display equipment and driving equipment disclosed in the embodiments of the present invention are only preferred embodiments of the present invention, which are only used to illustrate the technical solutions of the present invention, rather than to limit them. Although the present invention has been described in detail with reference to the aforementioned embodiments, it should be understood by those skilled in the art that the technical solutions described in the aforementioned embodiments can still be modified, or some of the technical features therein can be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A bistable display device, characterized in that: It can be connected to a driving device (200) for driving the bi-stable display device (100) through a physical interface, and the bi-stable display device (100) does not include a battery; The bi-stable display device (100) comprises a display component (101), at least one first physical interface (102) coupled to the display component (101), a first receiving circuit (103) and a second receiving circuit (104); The display component (101) comprises at least one driver IC (1011); The first physical interface (102) comprises: a main body and a first physical connection part (1021) for physically docking with the drive device (200) and at least one electrical connection part; The electrical connection portion is coupled to the main body and extends outward from the main body, and the electrical connection portion includes at least one first electrical connection portion (1022A) and at least one second electrical connection portion (1022B); One end of the first receiving circuit (103) is coupled to the at least one first electrical connection portion (1022A), and the other end is coupled to the driving IC (1011), and the first receiving circuit (103) is configured to respond to a docking event with the driving device (200), and the response is used to receive a power signal provided by the connected driving device (200) through the first electrical connection portion (1022A); One end of the second receiving circuit (104) is coupled to the at least one second electrical connection portion (1022B), and the other end is coupled to the driving IC (1011), and the second receiving circuit (104) is configured to respond to a docking event with the driving device (200), and the response is used to receive a display signal sent by the connected driving device (200) through the second electrical connection portion (1022B); The driver IC (1011) burns an ID uniquely identified with the bistable display device (100); The electrical connection portion further includes at least one third electrical connection portion (1022C); When a docking event with the driving device (200) occurs, the ID is read by the driving device (200) through the third electrical connection portion (1022C); The driving IC (1011) is connected to a flexible printed circuit board (1012), and the other end of the flexible printed circuit board (1012) is connected to the first electrical connection part (1022A) and the second electrical connection part (1022B); The flexible printed circuit board (1012) is connected to at least two pins of the driver IC (1011), and the first electrical connection portion (1022A) and the second electrical connection portion (1022B) correspond to the at least two pins one by one respectively; The flexible printed circuit board (1012) is connected to 24 pins of the driver IC (1011); The 24 electrical connection parts correspond one to one to the 24 pins; A connector (1023) for connecting the flexible printed circuit board (1012) to the first electrical connection portion (1022A) and the second electrical connection portion (1022B), respectively; A protective element with waterproof and dustproof functions is provided at the interface of the first physical interface (102).

2. The bistable display device according to claim 1, characterized in that: The first physical interface (102) includes at least one of a male connector and / or a female connector of a USB-A, USB-B, Micro USB, Type-C, Lightning, HDMI, and a serial port; or a pin header and / or a pin header socket.

3. The bistable display device according to claim 1, characterized in that: The electrical connection portion includes at least one of an SPI interface, an I2C interface, a TTL interface, an RS232 interface, an RS485 interface, a UART interface and an I80 interface.

4. The bistable display device according to claim 1, characterized in that: The protective element is a wrapping portion capable of wrapping the first physical interface (102) and / or an embedding portion capable of embedding the first physical interface (102).

5. The bistable display device according to claim 1, characterized in that: The cross section of the first physical connection portion (1021) is symmetrical relative to the vertical axis.

6. The bistable display device according to claim 1, characterized in that: The cross section of the first physical connection portion (1021) is symmetrical relative to the horizontal axis.

7. A driving device, characterized in that: Used in conjunction with the bi-stable display device according to any one of claims 1 to 6, the driving device comprises at least one second physical interface (201), a power supply circuit (202) and a first sending circuit (203); The second physical interface (201) comprises a main body, a second physical connection portion (2011) for docking with the first physical connection portion (1021) of the bi-stable display device (100), and at least one electrical connection portion; The electrical connection is coupled to the body and extends outwardly from the body; The electrical connection portion includes at least one fourth electrical connection portion (2012A) and at least one fifth electrical connection portion (2012B); the fourth electrical connection portion (2012A) is used to connect with the first electrical connection portion (1022A), and the fifth electrical connection portion (2012B) is used to connect with the second electrical connection portion (1022B); The power supply circuit (202) is coupled to the at least one fourth electrical connection portion (2012A), and the power supply circuit (202) is configured to respond to a docking event with the bi-stable display device (100), and the response is used to provide a power supply signal to the connected bi-stable display device (100) through the fourth electrical connection portion (2012A); The first sending circuit (203) is coupled to at least one fifth electrical connection portion (2012B), and the first sending circuit (203) is configured to respond to a docking event with the bistable display device (100), and the response is used to send a display signal to the connected bistable display device (100) through the fifth electrical connection portion (2012B), and the display signal is used for the bistable display device (100) to display.

8. A driving device according to claim 7, characterized in that: The electrical connection part also includes a sixth electrical connection part (2012C), which is used to connect to the third electrical connection part (1022C); The driving device (200) further comprises a reading circuit (204) and a first judging circuit (205); The reading circuit (204) is coupled to at least one sixth electrical connection portion (2012C), and the reading circuit (204) is configured to read a uniquely determined ID of the connected bistable display device (100), which is recorded as a first ID; The first judgment circuit (205) is coupled to the reading circuit (204), and is configured to judge whether the second ID of the bistable display device (100) pre-stored locally is consistent with the first ID, and obtain a judgment result; The first judgment circuit (205) is coupled to the power supply circuit (202) and the first sending circuit (203), and when the judgment result is yes, the power supply circuit (202) and the first sending circuit (203) are triggered to start working.

9. A driving device according to claim 7, characterized in that: A third receiving circuit (207) is included, which is used to receive the display signal provided by the signal source (300).

10. A driving device according to claim 9, characterized in that: The third receiving circuit (207) has a wireless communication subunit, which is used to obtain and receive the display signal provided by the signal source (300) through a wireless connection channel.

11. A driving device according to claim 10, characterized in that: The driving device comprises: a third physical interface (206) for physically connecting to the signal source (300), comprising a third physical connection portion (2061) and a seventh electrical connection portion (2062A) connected to at least one of the third physical connection portions (2061); The third receiving circuit (207) is coupled to the at least one seventh electrical connection portion (2062A), and the third receiving circuit (207) is configured to receive the display signal provided by the signal source (300) through the at least one seventh electrical connection portion (2062A).

12. A driving device according to claim 10, characterized in that: Also includes: A conversion circuit (208) is coupled to the third receiving circuit (207), and is configured to convert a first display signal that the bi-stable display device (100) cannot display into a second display signal that the bi-stable display device (100) can display.

13. A driving device according to claim 12, characterized in that: The second physical connection portion (2011) is also used to establish a physical connection with the signal source (300); The second physical interface (201) comprises an eighth electrical connection portion (2012D) and a ninth electrical connection portion (2012E); The driving device (200) further comprises a second judgment circuit (209), wherein the second judgment circuit (209) is coupled to the eighth electrical connection portion (2012D) and the ninth electrical connection portion (2012E) respectively, and the second judgment circuit is configured to respond to a docking event, wherein the docking event comprises a docking event with a bistable display device (100) or with a signal source (300), and the response is used to judge whether the connected external device is a bistable display device (100) or a signal source (300); when the connected external device is a bistable display device (100), the docking event with the bistable display device (100) is triggered through the eighth electrical connection portion (2012D); and when the connected external device is a signal source (300), the docking event with the signal source (300) is triggered through the ninth electrical connection portion (2012E).

14. A driving device according to claim 13, characterized in that: The second judgment circuit (209) has a detection module, which is used to determine that the connected external device is the signal source (300) when a power signal is detected, and otherwise it is the bi-stable display device (100).

15. A driving device according to claim 7, characterized in that: The second physical interface (201) includes at least one of a male connector and / or a female connector of a USB-A, USB-B, Micro USB, Type-C, Lightning, HDMI, and a serial port; or a pin header and / or a pin header socket.

16. A driving device according to claim 7, characterized in that: A protective element with waterproof and dustproof functions is provided at the interface of the second physical interface (201).

17. A driving device according to claim 16, characterized in that: The protective element is a wrapping portion capable of wrapping the second physical interface (201) and / or an embedding portion capable of embedding the second physical interface (201).

18. A driving device according to claim 17, characterized in that: The electrical connection portion includes at least one of an SPI interface, an I2C interface, a TTL interface, an RS232, an RS485, a UART and an I80 interface.

19. A driving device according to claim 7, characterized in that: include: A connector is used to connect the flexible printed circuit board to the first electrical connection part (1022A) and the second electrical connection part (1022B) respectively.

20. A driving device according to claim 7, characterized in that: include: The cross section of the second physical connection portion (2011) is symmetrical relative to the vertical axis.

21. A driving device according to claim 20, characterized in that: include: The cross section of the second physical connection portion (2011) is symmetrical relative to the horizontal axis.

22. A driving device according to claim 7, characterized in that: include: A power supply battery and a boost circuit connected to the power supply battery, wherein the boost circuit boosts the voltage of the power supply battery to a power supply signal that is adapted to the voltage of the bistable display device.

23. A display device, characterized in that: A bistable display device (100) as described in any one of claims 1 to 6 is installed in at least one of an electronic tag, a billboard, a signboard, a workstation sign, a table sign, an electronic menu, a luggage tag, a luggage label, an electronic card, a medical bedside card, an infusion card, a shelf, a filing cabinet or a book cabinet, and can be used in conjunction with a drive device (200) as described in any one of claims 7 to 22.

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