CN117406870A - Key module with screen - Google Patents

Key module with screen Download PDF

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Publication number
CN117406870A
CN117406870A CN202311397815.3A CN202311397815A CN117406870A CN 117406870 A CN117406870 A CN 117406870A CN 202311397815 A CN202311397815 A CN 202311397815A CN 117406870 A CN117406870 A CN 117406870A
Authority
CN
China
Prior art keywords
key
display
circuit board
interface
driving circuit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202311397815.3A
Other languages
Chinese (zh)
Inventor
马诚
邓礼安
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Beijing Arixo Technology Co ltd
Original Assignee
Beijing Arixo Technology Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Beijing Arixo Technology Co ltd filed Critical Beijing Arixo Technology Co ltd
Priority to CN202311397815.3A priority Critical patent/CN117406870A/en
Publication of CN117406870A publication Critical patent/CN117406870A/en
Pending legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/02—Input arrangements using manually operated switches, e.g. using keyboards or dials
    • G06F3/0202—Constructional details or processes of manufacture of the input device
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
    • G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
    • G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
    • G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/70—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard
    • H01H13/702—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard with contacts carried by or formed from layers in a multilayer structure, e.g. membrane switches
    • H01H13/705—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard with contacts carried by or formed from layers in a multilayer structure, e.g. membrane switches characterised by construction, mounting or arrangement of operating parts, e.g. push-buttons or keys
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/70—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard
    • H01H13/83—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard characterised by legends, e.g. Braille, liquid crystal displays, light emitting or optical elements

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  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Engineering & Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Input From Keyboards Or The Like (AREA)

Abstract

The application provides a key module with a screen. The key module comprises a key body, a display screen and a display driving circuit board; the key body is used for triggering a key-in signal when receiving a user press, and transmitting the key-in signal to the display driving circuit board; the display screen is arranged at the top of the key body and used for displaying the output information of the key module; the display drive circuit board is arranged in or below the key body, and three interfaces are arranged on the display drive circuit board: the device comprises a key interface, a communication interface and a display interface; the display driving circuit board receives the key-in signal of the key body through the key interface, is connected with the upper-level main control equipment of the key module through the communication interface, is connected with the display screen through the display interface, and is used for realizing information interaction among the key body, the display screen and the upper-level main control equipment. The key of traditional mechanical keyboard has been solved to this application can't provide the problem of information display function, can make the response and the information display function of key unified realization.

Description

Key module with screen
Technical Field
The application relates to the technical field of key design, in particular to a key module with a screen.
Background
A conventional mechanical keyboard is a common input device, and its keys generally provide only an information input function, but not an information display function. However, in some application scenarios, the user needs to directly obtain a display of related information above the keys to improve user experience and work efficiency.
The touch screen keyboard combines conventional mechanical keyboard and touch screen technology such that the keys have the function of a touch screen. The user can directly touch, slide, zoom and the like on the keyboard, and related information can be displayed on the touch screen. However, touch screen keyboards typically employ capacitive or resistive touch screens, which are costly to manufacture, are not intuitive for the user to input, and are experienced by the user as having a relatively large difference in hand feel from mechanical keys.
The keyboard with the LED indicator lights is characterized in that the LED indicator lights are added on keys of a traditional mechanical keyboard and are used for displaying key states or other related information. The LED indicator lights may represent different information by different colors or flashing patterns. However, the display mode of the LED indicator light is limited, and only simple information can be transmitted through different lights, so that complicated text, icon or animation display cannot be realized.
Disclosure of Invention
The application aims at providing a key module with a screen, which is used for solving the problem that keys of a traditional mechanical keyboard cannot provide an information display function.
The key module of area screen of this application includes: the display comprises a key body, a display screen and a display driving circuit board; the key body is used for triggering a key-in signal when receiving a user press, and transmitting the key-in signal to the display driving circuit board; the display screen is arranged at the top of the key body and used for displaying the output information of the key module; the display driving circuit board is arranged in or below the key body, and three interfaces are arranged on the display driving circuit board: the device comprises a key interface, a communication interface and a display interface; the display driving circuit board receives a key-in signal of the key body through the key interface, is connected with the upper-level main control equipment of the key module through the communication interface, is connected with the display screen through the display interface, and is used for realizing information interaction between the key body, the display screen and the upper-level main control equipment.
Compared with the prior art, the beneficial effect of this application lies in:
according to the key module with the screen, on the basis of the key body of the traditional mechanical keyboard, the display screen is added to the top of the key body, the display driving circuit board is added to the inside or the lower side of the key body, once the key body receives the user pressing, the key-in signal is triggered and transmitted to the display driving circuit board, the display driving circuit board receives the key-in signal of the key body through the key interface arranged on the key driving circuit board, the display screen is connected with the display screen through the display interface arranged on the display driving circuit board, the display screen is controlled to display output information, the response and the information display function of the key are uniformly realized, the user can see the display of related information on the display screen above the key body, more key state information and operation information are obtained, and therefore richer interaction experience is provided for the user. In addition, the display drive circuit board can be connected with the upper-level main control equipment of the key module through the communication interface arranged on the display drive circuit board, such as external equipment of a keyboard, a computer and the like, so that the display drive circuit board can conveniently communicate with the external equipment, and has better user experience and wider application prospect.
The foregoing description of the embodiments of the present application is merely an overview of the embodiments of the present application, and may be implemented in accordance with the disclosure of the specification, for the purpose of making the above and other objects, features and advantages of the present application more apparent, and the preferred embodiments of the present application will be described in the detailed description section below.
Drawings
The drawings are only for purposes of illustrating particular embodiments and are not to be construed as limiting the application, like reference numerals being used to refer to like parts throughout the several views. In the drawings:
fig. 1 is a schematic diagram of a functional module of a key module with a screen according to the present application;
fig. 2 is a schematic circuit diagram of a key module according to embodiment 1 of the present application;
fig. 3 is an exploded view of the key module of embodiment 1 of the present application;
FIG. 4 is a schematic cross-sectional view of a key module according to embodiment 1 of the present application;
fig. 5 is a schematic structural diagram of a display screen according to an embodiment of the present application;
fig. 6 is a schematic circuit diagram of a key module according to embodiment 2 of the present application;
fig. 7 is an exploded view of the key module of embodiment 2 of the present application.
The device comprises a 1-display lens, a 2-protective shell, a 3-display screen, a 4-key connecting shaft, a 5-fixed seat, a 6-display driving circuit board, a 7-cover plate, an 8-switching flexible board, a 9-touch reed mechanism group, a 10-switching circuit board, an 11-movable core shaft assembly, a 12-balance bar mechanism, a 41-display screen connecting part, a 42-display screen display part and a 100-key body.
Detailed Description
For the purposes, technical solutions and advantages of the present application, the technical solutions of the present application will be clearly and completely described below with reference to specific embodiments of the present application and corresponding drawings. It will be apparent that the described embodiments are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.
The technical terms referred to in this application are as follows:
LCD (Liquid Crystal Display) liquid crystal display;
an OLED (Organic Light-Emitting Diode) electro-mechanical laser display;
I2C (Inter-Integrated Circuit) I2C bus;
SPI (serial peripheral interface) serial peripheral interface;
PWM (Pulse Width Modulation) is simply pulse width modulation;
PMMA (Poly Methyl Methacrylatemethacrylic Acid) polymethyl methacrylate.
The design concept of the application is that aiming at the problem that keys of the traditional mechanical keyboard can only provide an information input function and cannot provide an information display function, the key module with the screen is provided, and a display screen and a display driving circuit board are added on the basis of a key body, so that the response of the keys and the information display function are realized uniformly, and richer interaction experience is provided for users; meanwhile, a communication interface connected with the upper-level main control equipment is also arranged on the display drive circuit board, so that the key module has better user experience and wider application prospect.
The following describes in detail the technical solutions provided by the embodiments of the present application with reference to the accompanying drawings.
Example 1
Referring to fig. 1, an embodiment of the present application proposes a key module with a screen, including a key body 100, a display 3, and a display driving circuit board 6; wherein,
the key body 100 is used for triggering a key-in signal when receiving a user press, and transmitting the key-in signal to the display driving circuit board 6; the display 3 is disposed at the top of the key body 100, and is used for displaying output information of the key module;
the display driving circuit board 6 is disposed in or below the key body 100, and three interfaces are disposed thereon: the device comprises a key interface, a communication interface and a display interface; the display driving circuit board 6 receives the key-in signal of the key body 100 through a key interface, is connected with the upper-level main control equipment of the key module through a communication interface, is connected with the display screen 3 through a display interface, and is used for realizing information interaction among the key body 100, the display screen 3 and the upper-level main control equipment.
According to some embodiments of the present application, the communication interface may be a bluetooth interface, a USB connector, a pin connector, or a B2B connector. The display interface may be a ZIF connector or a B2B connector.
In some embodiments, the communication interface between the key module and the upper-level main control device may be defined by the electrical signal transmitted by the pin:
GND GND DM DP GND GND GND
GND GND GND GND VBUS GND GND
in some embodiments, the display interface of the key module connected to the display screen may have the electrical signal definition of pin transmission:
GND LEDK LEDA VDD GND GND D/C
RESERVE KEY GND RESET MOSI SCK CS
it should be noted that, no matter what standard interface form is adopted in the communication interface or the display interface of the present application, specific definition can be made on the electrical signals to be transmitted by pins of each standard interface and the sequence between the electrical signals according to actual needs, which is not limited in this application.
Because the key module with the screen can adopt standard interfaces in various forms, such as a Bluetooth interface, a USB connector, a contact pin connector or a B2B connector and the like to be in communication connection with the superior main control equipment, the key module can be conveniently communicated with and used by various external equipment, seamless connection between the key module and the external equipment is realized, compatibility and interoperability are improved, the advantages brought by the key module with the screen can be enjoyed, and the limitation that the traditional mechanical keyboard can not provide an information display function is solved.
According to some embodiments of the present application, referring to fig. 2, the display driving circuit board 6 of the present application includes a main control chip, a memory chip, a power driving chip, and a backlight driving chip; wherein,
the main control chip is respectively and electrically connected with the key interface, the communication interface, the display interface, the storage chip and the backlight driving chip on the display driving circuit board 6 and is used for receiving the key-in signal of the key body 100, transmitting the key-in signal to the upper-level main control equipment, receiving the control signal from the upper-level main control equipment and controlling the display content of the display screen 3 according to the control signal;
the memory chip is used for storing related display data;
the backlight driving chip is electrically connected with the display interface and is used for providing backlight for the display screen 3 and adjusting the brightness of the backlight according to the requirement;
the power driving chip is electrically connected with each chip and interface on the display driving circuit board 6, and is used for acquiring external power from the communication interface and providing working power for the whole display driving circuit board 6.
In the structure of the display driving circuit board 6, the main control chip and the memory chip can adopt SPI protocol communication; the main control chip and the backlight driving chip can be communicated by adopting an I2C or PWM protocol; USB, WIFI or Bluetooth protocol communication can be adopted between the main control chip and the communication interface; and the main control chip and the display interface can be communicated by adopting an I2C or SPI protocol. It can be seen that the circuit design of the display driving circuit board 6 is facilitated by adopting standard communication protocols commonly used in the industry between chips and interfaces.
According to some embodiments of the present application, referring to fig. 3 and 4, the key body 100 includes a key connection shaft 4, a fixing base 5, a cover plate 7, a switching flexible plate 8, a trigger reed mechanism group 9, a movable mandrel assembly 11, and a balance bar mechanism 12. Wherein,
the bottom of the fixing seat 5 is buckled with the cover plate 7, for example, the bottom and the cover plate can be buckled through a matched buckle and screw structure. The top of fixing base 5 is connected with the shell of button connecting axle 4 through the buckle. The touch reed mechanism group 9, the movable mandrel assembly 11 and the balance rod mechanism 12 are all arranged in the fixed seat 5, specifically, the balance rod mechanism 12 is arranged at a position parallel to the upper surface of the fixed seat 5, the movable mandrel assembly 11 is arranged at a position above the middle part of the fixed seat 5, and the touch reed mechanism group 9 is arranged below the movable mandrel assembly 11. The movable mandrel assembly 11 is connected with the central part of the key connecting shaft 4 through mutually matched convex columns and concave grooves. The movable core shaft assembly 11 and the touch reed mechanism group 9 are positioned at the central part of the whole key module and fixed on the fixed seat 5, and form key components of the key body movement together with the key connecting shaft 4.
The trigger reed mechanism group 9 serves as a main working member of the key body 100 for triggering a key-in signal when pressed by a user. Specifically, when the user presses the key connecting shaft 4, the lower end of the trigger reed mechanism group 9 is brought into contact with the key interface on the display driving circuit board 6 by force conduction, that is, a key input signal is triggered. The balance bar mechanism 12 serves as a compensation structure for the key body 100 when it is active, and is used for balancing the stress of the user when it is pressed, so as to provide the user with a feeling of consistency when it is pressed.
The switching flexible board 8 is arranged on the key connecting shaft 4 and penetrates through the fixing seat 5, and is used for electrically connecting the display driving circuit board 6 and the display screen 3. The arrangement mode well protects the switching flexible board 8 in the shell surrounded by the key connecting shaft 4 and the fixed seat 5, and avoids hidden trouble of poor contact caused by external force on the switching flexible board 8.
According to some embodiments of the present application, referring to fig. 5, the display 3 includes a display portion 42 and a connection portion 41, wherein the display portion 42 is used for displaying output information of the key module, and the connection portion 42 is used for connecting the adapting flexible board 8 in the key body 100.
As can be seen in fig. 3 and 4, the display 3 is specifically disposed on top of the key connecting shaft 4, and the outer casing of the key connecting shaft 4 provides physical support for the display 3. The display 3 may be an LCD or OLED screen to meet the needs of different users. The LCD screen realizes information display through the liquid crystal layer, the transparent electrode layer and the backlight source, and the OLED screen realizes information display through the organic light emitting diode.
In the embodiment shown in fig. 3 and 4, the display driving circuit board 6 is disposed inside the key body 100, and specifically, is buckled inside a casing enclosed by the cover 7 and the fixing base 5; one end of the switching flexible board 8 is connected with the display screen 3, the other end of the switching flexible board is connected with the display driving circuit board 6, and the electric connection between the display driving circuit board 6 and the display screen 3 is directly realized.
According to some embodiments of the present application, referring still to fig. 3 and 4, the key module of the present application further includes a display lens 1 and a protective case 2, wherein the display lens 1 is located above the display screen 3, and both are fixed in the protective case 2. The display lens 1 adopts transparent organic glass made of PMMA material, so that the display content of the display screen 3 can be clearly displayed. The display lens 1 is used as the uppermost part of the key module, directly receives the knocking or pressing of the key module by a user, can prevent the display screen 3 arranged below the display lens from being knocked or pressed by external force, is matched with the protective shell 2, can further prevent the display screen 3 from being dust, and prolongs the service life of the display screen 3.
To sum up, the key module with the screen provided by the application is based on the key body of the traditional mechanical keyboard, the display screen is added at the top of the key body, the display driving circuit board is added in the key body or below the key body, once the key body receives the user pressing, the key-in signal is triggered and transmitted to the display driving circuit board, the display driving circuit board receives the key-in signal of the key body through the key interface arranged on the key driving circuit board, and the display screen is connected with the display screen through the display interface arranged on the display driving circuit board, so that the response and the information display function of the key are uniformly realized, the user can see the display of related information on the display screen above the key body, more key state information and operation information are obtained, and richer interactive experience is provided for the user. In addition, the display drive circuit board can be connected with the upper-level main control equipment of the key module through the communication interface arranged on the display drive circuit board, such as external equipment of a keyboard, a computer and the like, so that the display drive circuit board can conveniently communicate with the external equipment, and has better user experience and wider application prospect.
Example 2
Embodiment 2 is different from embodiment 1 in that the key module with a screen provided in embodiment 2 further includes a switching circuit board.
Referring to fig. 6 and 7, the key module with a screen provided in embodiment 2 includes not only the key body 100, the display 3 and the display driving circuit board 6 of embodiment 1, but also a switching circuit board 10, and the switching circuit board 10 is connected between the display driving circuit board 6 and the display 3.
In embodiment 2, the key interface and the display interface on the display drive circuit board 6 are transferred to the relay circuit board 10, and the display drive circuit board 6 and the relay circuit board 10 are electrically connected by a connector. The adapting circuit board 10 is disposed inside the key body 100, and specifically fastened inside a housing enclosed by the cover 7 and the fixing base 5. The display driving circuit board 6 is disposed below the cover plate 7, and the connector on the switching circuit board 10 is electrically connected with the display driving circuit board 6 through the cover plate 7. One end of the switching flexible board 8 is connected with the display screen 3, the other end is connected with the switching circuit board 10, and the display driving circuit board 6 and the display screen 3 are electrically connected indirectly through the switching circuit board 10.
That is, not only is embodiment 2 added with the interposer circuit board on the basis of embodiment 1, but also the key interface and the display interface on the display driving circuit board 6 in embodiment 1 are transferred to the interposer circuit board 10 for processing. Structurally, the switching circuit board 10 replaces the original display driving circuit board 6 and is arranged in the key body, the display driving circuit board 6 is arranged outside the key body, specifically, the display driving circuit board 6 is arranged below the cover plate 7, and the display driving circuit board 6 can be electrically connected with the switching circuit board 10 through the contact pin connector. At this time, the display screen 3 is electrically connected with the switching circuit board 10 through the switching flexible board 8, and further, the display driving circuit board 6 and the display screen 3 are indirectly electrically connected through the switching circuit board 10. In embodiment 2, the display driving circuit board 6 is still connected to the upper host apparatus through a communication interface thereon.
With this structural design of embodiment 2, since the display driving circuit board 6 is disposed outside the key body 100, when the display driving circuit board 6 fails, the failure location and the failure replacement can be conveniently performed without disassembling the key body 100. Moreover, the structural design of embodiment 2 can make the key body 100 have better portability, and can be conveniently combined with circuit boards with different functions.
Finally it is pointed out that the term "comprising," "comprising," or any other variation thereof, is intended to cover a non-exclusive inclusion, such that the term "comprises … …" does not exclude the presence of other elements or the like, and that a process, method, article, or apparatus that comprises an element does not include a limitation.
In this application, unless specifically stated and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically connected, electrically connected or communicable with each other; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.
Although embodiments of the present application have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the application, and that variations, modifications, alternatives, and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the application.

Claims (10)

1. The utility model provides a take button module of screen which characterized in that includes: a key body (100), a display screen (3) and a display driving circuit board (6); wherein,
the key body (100) is used for triggering a key-in signal when receiving a user press, and transmitting the key-in signal to the display drive circuit board (6);
the display screen (3) is arranged at the top of the key body (100) and is used for displaying the output information of the key module;
the display driving circuit board (6) is arranged in the key body (100) or below the key body, and three interfaces are arranged on the display driving circuit board: the device comprises a key interface, a communication interface and a display interface; the display driving circuit board (6) receives a keying signal of the key body (100) through the key interface, is connected with an upper-level main control device of the key module through the communication interface, is connected with the display screen (3) through the display interface, and is used for realizing information interaction between the key body (100), the display screen (3) and the upper-level main control device.
2. The key module of claim 1, wherein the communication interface is a bluetooth interface, a USB connector, a pin connector, or a B2B connector; the display interface is a ZIF connector or a B2B connector.
3. The key module according to claim 1, wherein the display driving circuit board (6) comprises a main control chip, a memory chip, a power driving chip and a backlight driving chip;
the main control chip is respectively and electrically connected with the key interface, the communication interface, the display interface, the storage chip and the backlight driving chip and is used for receiving a key-in signal of the key body (100) and transmitting the key-in signal to the upper-level main control equipment, receiving a control signal from the upper-level main control equipment and controlling the display content of the display screen (3) according to the control signal;
the memory chip is used for storing related display data;
the backlight driving chip is electrically connected with the display interface and is used for providing backlight for the display screen (3) and adjusting the brightness of the backlight according to the requirement;
the power supply driving chip is electrically connected with each chip and each interface on the display driving circuit board (6) and is used for acquiring an external power supply from the communication interface and providing a working power supply for the whole display driving circuit board (6).
4. The key module according to claim 3, wherein the main control chip and the memory chip are in SPI protocol communication; the main control chip and the backlight driving chip are communicated by adopting an I2C or PWM protocol; the main control chip and the communication interface are communicated by adopting USB, WIFI or Bluetooth protocols; and the main control chip and the display interface are communicated by adopting an I2C or SPI protocol.
5. The key module according to claim 1, wherein the key body (100) comprises a key connecting shaft (4), a fixed seat (5), a cover plate (7), a switching flexible plate (8), a touch reed mechanism group (9), a movable mandrel assembly (11) and a balance bar mechanism (12);
the bottom of the fixed seat (5) is buckled and connected with the cover plate (7), and the top of the fixed seat (5) is buckled and connected with the outer shell of the key connecting shaft (4);
the touch reed mechanism group (9), the movable mandrel assembly (11) and the balance rod mechanism (12) are all arranged in the fixed seat (5), wherein the balance rod mechanism (12) is arranged at a position parallel to the upper surface of the fixed seat (5), the movable mandrel assembly (11) is arranged at a position on the middle part of the fixed seat (5), the touch reed mechanism group (9) is arranged below the movable mandrel assembly (11), and the movable mandrel assembly (11) is connected with the central part of the key-press connecting shaft (4) through a convex column and a concave column which are matched with each other;
the touch reed mechanism group (9) is used as a main working part of the key body (100) and is used for triggering a key-in signal when a user presses; the balance rod mechanism (12) is used as a compensation structure when the key body (100) moves and used for balancing the stress of a user during pressing;
the switching flexible board (8) is arranged on the key connecting shaft (4) and penetrates through the fixing seat (5) and is used for electrically connecting the display driving circuit board (6) and the display screen (3).
6. The key module according to claim 5, wherein the display (3) is arranged on top of the key connecting shaft (4); the display screen (3) comprises a display part (42) and a connecting part (41), wherein the display part (42) is used for displaying output information of the key module, and the connecting part (41) is used for connecting the switching flexible board (8).
7. The key module according to claim 6, wherein the display driving circuit board (6) is disposed inside the key body (100) and is buckled inside a housing enclosed by the cover plate (7) and the fixing base (5); one end of the switching flexible board (8) is connected with the display screen (3), and the other end of the switching flexible board is connected with the display driving circuit board (6).
8. The key module according to claim 6, further comprising a switching circuit board (10), the switching circuit board (10) being connected between the display driving circuit board (6) and the display screen (3);
the key interface and the display interface on the display drive circuit board (6) are transferred to the switching circuit board (10), and the display drive circuit board (6) and the switching circuit board (10) are electrically connected through a connector.
9. The key module according to claim 8, wherein the switching circuit board (10) is disposed inside the key body (100) and is buckled inside a housing enclosed by the cover plate (7) and the fixing base (5); the display driving circuit board (6) is arranged below the cover plate (7), and a connector on the switching circuit board (10) is electrically connected with the display driving circuit board (6) through the cover plate (7); one end of the switching flexible board (8) is connected with the display screen (3), the other end of the switching flexible board is connected with the switching circuit board (10), and the display driving circuit board (6) and the display screen (3) are electrically connected through the switching circuit board (10).
10. The key module according to any of claims 1 to 9, further comprising a display lens (1) and a protective shell (2), wherein the display lens (1) is located above the display screen (3) and both are fixed within the protective shell (2).
CN202311397815.3A 2023-10-26 2023-10-26 Key module with screen Pending CN117406870A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202311397815.3A CN117406870A (en) 2023-10-26 2023-10-26 Key module with screen

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202311397815.3A CN117406870A (en) 2023-10-26 2023-10-26 Key module with screen

Publications (1)

Publication Number Publication Date
CN117406870A true CN117406870A (en) 2024-01-16

Family

ID=89492161

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202311397815.3A Pending CN117406870A (en) 2023-10-26 2023-10-26 Key module with screen

Country Status (1)

Country Link
CN (1) CN117406870A (en)

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