CN215987914U

CN215987914U - Double-sided display device and electronic equipment

Info

Publication number: CN215987914U
Application number: CN202121989730.0U
Authority: CN
Inventors: 黄茂涵; 苏小燕
Original assignee: PAX Computer Technology Shenzhen Co Ltd
Current assignee: PAX Computer Technology Shenzhen Co Ltd
Priority date: 2021-08-20
Filing date: 2021-08-20
Publication date: 2022-03-08
Anticipated expiration: 2031-08-20

Abstract

The application relates to the technical field of display screens, and provides a double-sided display device and electronic equipment. The display screen comprises a printed circuit board, a first display screen, a second display screen, a first signal interface and a second signal interface, wherein the first signal interface and the second signal interface are arranged on a second surface of the printed circuit board; the first signal interface and the second signal interface are connected with the first display screen through corresponding first connecting pieces and second connecting pieces; the third signal interface and the fourth signal interface of the second surface of the printed circuit board are connected with the second display screen through corresponding connecting pieces, and the first connecting piece and the second connecting piece are respectively arranged on two opposite side surfaces of the printed circuit board, so that the screen is prevented from being lifted, safety protection is carried out on the first display screen and the second display screen, and the problem of acquiring sensitive information when the double-sided display device is damaged manually is avoided.

Description

Double-sided display device and electronic equipment

Technical Field

The application belongs to the technical field of display screens, and particularly relates to a double-sided display device and electronic equipment.

Background

Currently, most of the existing terminals are single-sided displays, but in some special occasions, for example: the display device in different positions is often required to be arranged in places with a lot of people flow, such as banks, community service centers and stations, so that people coming and going are reminded or served, and the single-screen terminal is difficult to meet abundant market demands.

In addition, people flow through a plurality of places, and different people use the terminal equipment, so that the problem that the terminal display equipment is damaged manually to acquire sensitive information in the terminal display equipment is solved.

SUMMERY OF THE UTILITY MODEL

The application aims to provide a double-sided display device and electronic equipment, and aims to solve the problem that sensitive information in terminal display equipment is acquired by artificially destroying the terminal display equipment.

A first aspect of an embodiment of the present application provides a dual-sided display device, including:

a printed circuit board;

the first display screen is arranged on the first surface of the printed circuit board;

the second display screen is arranged on the second surface of the printed circuit board;

the first signal interface and the second signal interface are arranged on the second surface of the printed circuit board;

the first signal interface is connected with the first display screen through a first connecting piece; the second signal interface is connected with the first display screen through a second connecting piece, and the first connecting piece and the second connecting piece are respectively arranged on two opposite side surfaces of the printed circuit board;

the third signal interface and the fourth signal interface are arranged on the second surface of the printed circuit board;

the third signal interface is connected with the second display screen through a third connecting piece; and the fourth signal interface is connected with the second display screen through a fourth connecting piece.

Optionally, the first signal interface and the second signal interface are arranged in parallel.

Optionally, the first connecting piece and the second connecting piece are diagonally arranged.

Optionally, the first connecting member includes: the device comprises a first communication data line and a first connecting component connected with the first communication data line; the first communication data line is connected with the first display screen, and the first connecting assembly is connected with the first signal interface;

the second connector includes: a second communication data line and a second connection assembly connected with the second communication data line; the second communication data line is connected with the first display screen, and the second connecting assembly is connected with the second signal interface.

Optionally, the third connecting member includes: a third communication data line and a third connection assembly connected to the third communication data line; the third communication data line is connected with the second display screen, and the third connecting assembly is connected with the third signal interface;

the fourth connecting member includes: a fourth communication data line and a fourth connection assembly connected with the fourth communication data line; the fourth communication data line is connected with the second display screen, and the fourth connecting assembly is connected with the fourth signal interface.

Optionally, the dual-sided display device further includes:

the first shell is arranged between the first display screen and the first surface of the printed circuit board;

and the second shell is arranged between the second display screen and the second surface of the printed circuit board.

Optionally, the first housing is fixedly connected to the first surface of the printed circuit board by a buckle, and the second housing is fixedly connected to the second surface of the printed circuit board by a buckle.

Optionally, the dual-sided display device further includes: a controller for generating a tamper-proof signal;

the controller is connected with the first signal interface, the second signal interface, the third signal interface and the fourth signal interface respectively.

Optionally, the first display screen and the second display screen are liquid crystal display screens or touch display screens.

A second aspect of embodiments of the present application provides an electronic apparatus including a dual-sided display device as described in any one of the above.

The embodiment of the application provides a double-sided display device and electronic equipment, wherein the double-sided display device comprises a printed circuit board and a first display screen arranged on a first surface of the printed circuit board; the second display screen is arranged on the second surface of the printed circuit board; the first signal interface and the second signal interface are arranged on the second surface of the printed circuit board; the first signal interface and the second signal interface are connected with the first display screen through corresponding first connecting pieces and second connecting pieces; the third signal interface and the fourth signal interface are arranged on the second surface of the printed circuit board; the third signal interface and the fourth signal interface are connected with the second display screen through corresponding connecting pieces. This application is through doing safety protection on first display screen and second display screen to rely on these two display screens and printed circuit board self to provide a comprehensive safety protection for equipment, can avoid when meetting the two-sided display device of artificial destruction, first display screen and second display screen are turned up and are opened, acquire the problem of sensitive information wherein.

Drawings

Fig. 1 is a schematic structural diagram of a dual-sided display device according to an embodiment of the present disclosure;

fig. 2 is a schematic structural diagram of a dual-sided display device according to another embodiment of the present disclosure;

fig. 3 is a schematic structural diagram of a dual-sided display device according to another embodiment of the present disclosure;

fig. 4 is a schematic structural diagram of a dual-sided display device according to another embodiment of the present disclosure;

fig. 5 is a schematic structural diagram of a dual-sided display device according to another embodiment of the present disclosure;

fig. 6 is a schematic structural diagram of a dual-sided display device according to another embodiment of the present disclosure;

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present application clearer, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or be indirectly connected to the other element.

It will be understood that the terms "sides," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship indicated in the drawings for convenience in describing the present application and to simplify description, but do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be constructed in a particular manner of operation, and are not to be considered limiting of the present application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

On the one hand, most of display devices on the market are single-sided display, one display device can only face one direction to display, and only one person can operate alone when the display device needs to be operated. However, with the continuous improvement of the living standard of people, the current single-sided display device is difficult to meet the requirements of people, and in some specific occasions, such as the banking and financial industry, when a business worker and a user need to operate one screen at the same time, the single-sided display device is very inconvenient and brings bad user experience to the user.

On the other hand, most of the current display devices have attached substrates which are fixed on the transparent flexible film substrate in a device mounting mode, however, most of the existing light source bodies adopt a packaging body formed by welding a conducting wire with an internal chip, and when the existing light source bodies are damaged artificially, the screen is easily detached to acquire sensitive information, so that the privacy of a user is greatly threatened.

In order to solve the above technical problem, an embodiment of the present application provides a dual-sided display device. Referring to fig. 1 and 2, the dual-sided display device includes a printed circuit board 30, a first display 11 disposed on a first surface 03 of the printed circuit board, a second display 02 disposed on a second surface 12 of the printed circuit board, a first signal interface 07 and a second signal interface 04 disposed on the second surface 12 of the printed circuit board, and a third signal interface 18 and a fourth signal interface 15 disposed on the second surface 12 of the printed circuit board.

The first signal interface 07 is connected with the first display screen 11 through a first connecting piece 40; the second signal interface 04 is connected with the first display screen 11 through the second connecting piece 41; the third signal interface 18 is connected to the second display screen 02 through a third connecting member 50; the fourth signal interface 15 is connected to the second display screen 02 via a fourth connection 51.

Specifically, the first connector 40 and the second connector 41 connected to the first display 11 respectively bypass the printed circuit board 30 from the side of the printed circuit board 30 and are correspondingly connected to the first signal interface 07 and the second signal interface 04 on the second side 12 of the printed circuit board 30, wherein the first connector 40 and the second connector 41 may bypass the printed circuit board 30 on the opposite side of the printed circuit board 30, may bypass the printed circuit board 30 on the adjacent side of the printed circuit board 30, and may bypass the printed circuit board 30 at two opposite corners of the printed circuit board 30 and are connected to the first signal interface 07 and the second signal interface 04 on the second side 12 of the printed circuit board by bypassing the printed circuit board 30. By the adoption of the mode, the stability of the first display screen 11 and the second display screen 02 can be further strengthened, the probability that the first display screen 11 and the second display screen 02 are disassembled is reduced, the double-sided display device is effectively protected from being broken by people, and user information stored on the first display screen 11, the second display screen 02 and the printed circuit board 30 is protected.

In one embodiment, the first signal interface 07 and the second signal interface 04 are arranged in parallel.

The first signal interface 07 and the second signal interface 04 may be connectors disposed on the second side 12 of the printed circuit board 30.

In one embodiment, the first display screen 11 and the second display screen 02 can both input a password, the set input password may be a power-on password of the device, or an access password of a specific application, and the like, and is mainly used for protecting information stored in the device and playing a role in protecting privacy of a client, wherein the input password form includes any one form of a numeric password, an alphabetic password, a gesture password, and a combination of numbers and letters.

In one embodiment, as shown in conjunction with fig. 1, 3 and 4, the first connector 40 includes: a first communication data line 14 and a first connection component 13 connected with the first communication data line 14.

The first communication data line 14 is connected to the first display 11, and the first connection module 13 is connected to the first signal interface 07. The first connection assembly may be connected to the first signal interface 07 in a board-to-board connector, which saves significant capital in simplifying testing in the electronics manufacturing industry, and currently, the high density PCBs in the electronics industry have more traces and components per unit area, requiring devices or products to be designed with several interconnected medium density boards rather than a single high density board, which however, just meets these requirements, simplifying the production and testing of electronic devices.

In one embodiment, the first connection component and the first signal interface 07 may be connected by a zebra stripe, and so on, the second connection component and the second signal interface 04 may be connected by a zebra stripe, the third connection component and the third signal interface 18 may be connected by a zebra stripe, and the fourth connection component and the fourth signal interface 15 may be connected by a zebra stripe.

Specifically, the zebra stripes can be formed by mutually staggered and superposed conductive rubber layers (black) containing carbon powder and insulating rubber layers (white), when the zebra stripes are clamped between a printed circuit board and a display screen (such as a first display screen 11 and a second display screen 02), a plurality of conductive layers are arranged to connect the printed circuit board with circuits on the display screen, and the zebra stripes are connected with products with a large number of driving paths, are low in price, can help to reduce cost, are soft, elastic and convenient and easy to align, and have good conductivity and stability.

In one embodiment, as shown with reference to fig. 2, 3 and 4, the second connector 41 includes: a second communication data line 17 and a second connection component 16 connected to the second communication data line 17; the second communication data line 17 is connected to the first display 11, and the second connection assembly 16 is connected to the second signal interface 04.

In one embodiment, as shown in fig. 1, fig. 2, fig. 3, and fig. 4, the first communication data line 14 and the second communication data line 17 are Flexible Printed Circuit (FPC). Specifically, the first communication data line 14 and the second communication data line 17 are respectively located on two sides of the printed circuit board and connected to the second surface 12 of the printed circuit board by bypassing the printed circuit board, so that the connection between the first display screen 11 and the printed circuit board 30 is strengthened, the first display screen 11 is prevented from being turned up, and the printed circuit board 30 is prevented from being separated, thereby ensuring the safety of the first display screen 11 and the printed circuit board 30, and preventing the device from acquiring internal sensitive information (such as account number, password information, CPU information and the like in a memory) from the first display screen 11.

In one embodiment, referring to fig. 1, 3 and 6, the third connector 50 includes: a third communication data line 06 and a third connection assembly 05 connected to the third communication data line 06; the third communication data line 06 is connected with the second display screen 02, and the third connecting assembly 05 is connected with the third signal interface 18;

specifically, the third communication data line connects the third signal interface 18 disposed on the second surface 12 of the printed circuit board and the third connection component connected to the third communication data line. Specifically, the presence of the pointer signal on the connector (e.g., the third connector 50) prevents the connector from being disconnected, prevents the communication data line (e.g., the third communication data line) from being damaged, and protects sensitive information on the communication data line.

In one embodiment, referring to fig. 2, 3 and 6, the fourth connector 51 includes: a fourth communication data line 09 and a fourth connection module 08 connected to the fourth communication data line 09; the fourth communication data line 09 is connected to the second display screen 02, and the fourth connecting assembly 09 is connected to the fourth signal interface 15. Specifically, the presence of the pointer signal on the connection (e.g., the fourth connection 51) prevents the connections (e.g., the third connection 50, the fourth connection 51) from being separated, prevents the two communication data lines (e.g., the third communication data line, the fourth communication data line) from being damaged, and protects sensitive information on the communication data lines.

In one embodiment, as shown in fig. 6, the third communication data line (e.g., FPC) and the fourth communication data line (e.g., FPC) are respectively located at two sides of the PCB to prevent the second display screen 02 from being turned up, thereby ensuring the safety of the second display screen 02 and the printed circuit board, so that the device cannot acquire internal sensitive information from the second display screen 02 to prevent the PCB from being separated, and the two communication data lines (e.g., the third communication data line and the fourth communication data line) are located to prevent the printed circuit board and the second display screen 02 from being separated, and may be located at left and right sides of the screen, respectively, may be two opposite corners, or may be upper and lower sides.

In one embodiment, referring to fig. 1 and 2, the dual-sided display device further includes: a first housing 10 disposed between the first display screen 11 and the first side 03 of the printed circuit board; and a second housing 01 disposed between the second display 02 and the second side 12 of the printed circuit board.

Specifically, the housings (e.g., the first housing 10, the second housing 01) may be made of an engineering plastic alloy having both excellent heat and weather resistance, dimensional stability and impact resistance, and excellent processing flowability of the resin. Of course, in some special use places, the housings (e.g., the first housing 10 and the second housing 01) may also be made of high-grade aluminum alloy, and in the case of a thinner thickness, the aluminum alloy housings can also receive enough pressure, bending force, pulling force and impact force, so as to protect the devices inside the housing well, prolong the service life of the device, and the aluminum alloy housings are more beautiful than the plastic housings.

In one embodiment, the first housing 10 is fixedly connected with the first side 03 of the printed circuit board by a snap, and the second housing 01 is fixedly connected with the second side 12 of the printed circuit board by a snap, so that the cost is saved, the assembly is simple,

the switch does not need to be additionally disassembled, and the stability and the reliability of the equipment are improved on the premise of ensuring the safety of the equipment.

In one embodiment, the dual-sided display device further includes: the controller for generating the tamper-proof signal, which may be a pointer signal generated by the controller, is provided on the connector (e.g., the first connector 40, the second connector 41, the third connector 50, and the fourth connector 51), and is connected to the first signal interface 07, the second signal interface 04, the third signal interface 18, and the fourth signal interface 15, respectively.

Specifically, the pointer signal has an intrusion detection function, and when the signal on the pointer pin changes from 0 to 1 or from 1 to 0 (depending on the TPAL bit of the backup control register BKP _ CR), an intrusion detection event is generated, which clears all data backups.

In one embodiment, to realize the anti-tamper function, it is ensured that when the casing is not opened, the pointer pin is pulled up to VBAT high level when the casing is not opened, and when the casing is opened, the pointer pin is at low level, the internal pointer detection circuit is triggered, and the backup data is cleared.

In one embodiment, the printed circuit board side includes: the two sides that the printed circuit board corresponds, printed circuit board two opposite angles, printed circuit board is same one side arbitrary, can consolidate the relation of connection between display screen (for example first display screen 11, second display screen 02) and the printed circuit board, make two-sided display device when using in public place, meet artificial destruction, be difficult to dismantle the screen and acquire sensitive information wherein, very big guarantee user's privacy safety, the life of equipment has also been prolonged simultaneously, the waste of public resource has been reduced.

In one embodiment, the display screens (e.g., the first display screen 11 and the second display screen 02) are touch display screens. So that the display screens (e.g. the first display screen 11, the second display screen 02) have both input and display functions. Specifically, when business is handled in some office halls, the double-screen display device can enable a salesman to use the screen on one side, a user uses the screen on the other side, the two screens can support a touch screen to input information such as passwords and characters, the double-screen display device can also stand on a desktop, and the user can operate the double-screen display device by himself.

In one embodiment, a Touch display (Touch panel) is an inductive liquid crystal display device capable of receiving input signals such as a Touch, and when a graphic button on a screen is touched, a Touch feedback system on the screen can drive various connecting devices according to a pre-programmed program, so as to replace a mechanical button panel and produce vivid video and audio effects by a liquid crystal display screen.

Specifically, the Touch Display screen may be formed by combining a Liquid Crystal Display (LCD) and a Touch Panel (TP), and the combination manner may be any one of full-lamination, frame lamination, and integral type.

Specifically, the full-lamination completely adheres the LCD and the TP together seamlessly by using water glue or optical glue, an air layer is not arranged in the middle, air between screens is eliminated by full-lamination, light reflection can be greatly reduced, loss of transmitted light is reduced, and therefore brightness is improved, and the display effect of the screens is enhanced; in addition, the gap is filled with the OCA glue in the full lamination, the LCD and the TP are tightly laminated, no dust and water vapor can enter, and the cleanliness of the screen is kept; the tight combination of the LCD and the TP not only can improve the strength, but also can effectively reduce the interference of noise to touch signals and improve the smooth sense of touch operation.

Specifically, although the display screen uses the double faced adhesive tape to fix the four sides of the touch screen and the display panel, and a gap filled with air exists between the LCD and the TP, the frame sticker is simple to operate, mature in process and stable at present.

In one embodiment, the sensitive information on the printed circuit board includes: at least any one of sensitive data, sensitive components, sensitive paths, and temper data. Wherein the sensitive data comprises: user passwords, account data, prompting information, encrypted passwords or account keys, and other user privacy information related to financial services or services; the sensitive part includes: devices (such as a safety CPU, a control IC or a resistance-capacitance device) with sensitive data and pointer data, and the like; the sensitive path refers to sensitive components and networks which can transmit sensitive data and pointer data, and the like; pointer data: including all of the pointer pins of the SP (secure CPU) and its connected sensitive components, networks, etc.

In one embodiment, the pointer signal trace is: the controller (such as CPU) end has several groups of pointer signal lines, P1-N1, P2-N2, P3-N3 … pointer signal are started from the controller through the corresponding pointer signal line, one or more groups of pointer signal are wired to the corresponding FPC (such as the first FPC, the second FPC, …, the fourth FPC) through the connecting component (such as the first FPC, the second FPC, …, the fourth FPC), the FPC is formed with a winding layer which is a mesh wire, and then the winding layer is returned to the printed circuit board to the controller through the connecting component.

Specifically, signals P1-N1 and P2-N2 are routed from the CPU to the fourth connecting member 51 and the third connecting member 50, mesh winding is performed on the second FPC to protect sensitive data on the FPC or the pointer signal itself, then the pointer signal is routed to the binding region of the second FPC (the FPC is fixed in the region of the TP), and routed to the first FPC on the TP, mesh winding is performed on the first FPC to protect sensitive data on the FPC or the pointer signal itself, and finally returned to the CPU on the printed circuit board through the first connecting member 40 and the second connecting member 41, wherein the number of groups of the pointer signal is not limited.

More specifically, signals P1-N1 and P2-N2 are routed from the CPU to the fourth connector 51 and the third connector 50, mesh winding is performed on the second FPC to protect sensitive data on the FPC or the pointer signal itself, and the signals are returned to the CPU on the printed circuit board through the fourth connector 51 and the third connector 50, and the number of groups of the pointer signal is not limited.

In one embodiment, referring to fig. 4 and 5 and fig. 6, the first FPC14 and the second FPC17 may be assembled and connected to the main board in the same manner as the third FPC06 and the fourth FPC09, such that the first FPC and the second FPC are located inside the first housing 10 (i.e., the second side 12 of the printed circuit board), and corresponding connection components (e.g., the first link component and the second connection component) on the PCB are located on the first side 03 of the printed circuit board, and are connected to the printed circuit board through the connection components to realize signal connection. During assembly, the first FPC and the second FPC are fixed on the inner side of the first shell 10 (namely the second surface 12 of the printed circuit board), the printed circuit board is directly buckled, so that the two connecting components are in signal communication, and then the second shell 01 is buckled, so that the signal communication of the connecting components on the second surface 12 of the printed circuit board is realized; the processing procedures are reduced, the production process is accelerated, and the production speed is improved.

An embodiment of the present application also provides an electronic apparatus including the double-sided display device according to any one of the above.

It will be apparent to those skilled in the art that, for convenience and brevity of description, only the above-mentioned division of the functional units and modules is illustrated, and in practical applications, the above-mentioned function distribution may be performed by different functional units and modules according to needs, that is, the internal structure of the apparatus is divided into different functional units or modules to perform all or part of the above-mentioned functions. Each functional unit and module in the embodiments may be integrated in one processing unit, or each unit may exist alone physically, or two or more units are integrated in one unit, and the integrated unit may be implemented in a form of hardware, or in a form of software functional unit. In addition, specific names of the functional units and modules are only for convenience of distinguishing from each other, and are not used for limiting the protection scope of the present application. The specific working processes of the units and modules in the system may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

In the above embodiments, the descriptions of the respective embodiments have respective emphasis, and reference may be made to the related descriptions of other embodiments for parts that are not described or illustrated in a certain embodiment.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.

The above-mentioned embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present application and are intended to be included within the scope of the present application.

Claims

1. A dual-sided display device, comprising:

a printed circuit board;

2. The dual sided display device of claim 1, wherein the first signal interface and the second signal interface are arranged in parallel.

3. The dual sided display device of claim 2, wherein the first connector is diagonally disposed from the second connector.

4. The dual sided display device of claim 1, wherein the first connector comprises: the device comprises a first communication data line and a first connecting component connected with the first communication data line; the first communication data line is connected with the first display screen, and the first connecting assembly is connected with the first signal interface;

5. The dual sided display device of claim 1, wherein the third connector comprises: a third communication data line and a third connection assembly connected to the third communication data line; the third communication data line is connected with the second display screen, and the third connecting assembly is connected with the third signal interface;

6. The dual-sided display device of claim 1, further comprising:

7. The dual-sided display device of claim 6, wherein the first housing is fixedly connected to the first side of the printed circuit board by a snap, and the second housing is fixedly connected to the second side of the printed circuit board by a snap.

8. The dual-sided display device of claim 1, further comprising: a controller for generating a tamper-proof signal;

9. The dual-sided display device of claim 1, wherein the first display screen and the second display screen are liquid crystal display screens or touch display screens.

10. An electronic apparatus characterized by comprising the double-sided display device according to any one of claims 1 to 9.