CN117472313B - Display control system and duplex screen - Google Patents
Display control system and duplex screen Download PDFInfo
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- CN117472313B CN117472313B CN202311829758.1A CN202311829758A CN117472313B CN 117472313 B CN117472313 B CN 117472313B CN 202311829758 A CN202311829758 A CN 202311829758A CN 117472313 B CN117472313 B CN 117472313B
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- 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
- G06F3/14—Digital output to display device ; Cooperation and interconnection of the display device with other functional units
- G06F3/1423—Digital output to display device ; Cooperation and interconnection of the display device with other functional units controlling a plurality of local displays, e.g. CRT and flat panel display
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F15/00—Digital computers in general; Data processing equipment in general
- G06F15/76—Architectures of general purpose stored program computers
- G06F15/78—Architectures of general purpose stored program computers comprising a single central processing unit
- G06F15/7807—System on chip, i.e. computer system on a single chip; System in package, i.e. computer system on one or more chips in a single package
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
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- General Physics & Mathematics (AREA)
- Human Computer Interaction (AREA)
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- Microelectronics & Electronic Packaging (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
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Abstract
The invention relates to the technical field of vehicle-mounted display screens, and discloses a display control system and a duplex screen. The display control system receives display screen information of the duplex screen through the MCU chip and transmits the display screen information to the SoC chip; the SoC chip calculates and processes the display screen information to obtain display screen control information, and transmits the display screen control information to the MCU chip; the MCU chip generates control instructions based on the display screen control information, and controls the current display pictures of the central control information display screen and the instrument display screen through the control instructions, so that the load of the SoC chip is reduced, and the stability of information transmission between the SoC chip and a plurality of display screens is improved.
Description
Technical Field
The invention relates to the technical field of vehicle-mounted display screens, in particular to a display control system and a duplex screen.
Background
In the intelligent cockpit of automotive electronics, the most important is the display screen. In order to save space in a vehicle and improve the aesthetic degree, a dual screen, i.e. two display screens are combined together, may be used. At present, the display control mode of the dual-screen is that the SoC chip directly communicates with the dual-screen, and the SoC chip generates corresponding control information based on the acquired dual-screen signals to control the dual-screen.
However, compared with one display screen, the multiple display screens have larger information quantity required to be acquired and transmitted by the SoC chip, and all data are concentrated on the SoC chip, so that the load of the SoC chip is increased, and the information transmission between the SoC chip and the dual-screen, namely, the multiple display screens is unstable.
The foregoing is provided merely for the purpose of facilitating understanding of the technical solutions of the present invention and is not intended to represent an admission that the foregoing is prior art.
Disclosure of Invention
The invention mainly aims to provide a display control system and a duplex screen, and aims to solve the technical problem that in the prior art, all data are concentrated on an SoC chip, the load of the SoC chip is increased, and information transmission between the SoC chip and a plurality of display screens is unstable.
In order to achieve the above object, the present invention provides a display control system including: a control card provided with an SoC chip, a host, a display screen PCBA provided with an MCU chip and a duplex screen;
the external part of the display screen PCBA and the external part of the host are respectively provided with an LVDS interface, the MCU chip is connected with the SoC chip through the LVDS interfaces, and the MCU chip is respectively connected with the two display screens of the dual-screen through the display screen PCBA;
The dual screen includes: the device comprises a glass cover plate, OCA optical adhesive, a central control information liquid crystal display module, an instrument liquid crystal display module, a central control screen backlight module, an instrument screen backlight module, a backlight backboard, structural adhesive and a display screen PCBA;
the display screen PCBA is arranged on the backlight backboard, buffer foam is arranged between the central control information liquid crystal display module and the central control screen backlight module, the buffer foam is arranged between the instrument liquid crystal display module and the instrument screen backlight module, the backlight backboard is respectively attached to the central control screen backlight module and the instrument screen backlight module through heat conduction double faced adhesive tapes, the backlight backboard is attached to the glass cover plate through structural adhesives, and the glass cover plate is attached to the central control information liquid crystal display module and the instrument liquid crystal display module through OCA optical adhesives to form a fully attached integrated structure;
the central control information liquid crystal display module and the central control screen backlight module form a central control information display screen, the instrument liquid crystal display module and the instrument screen backlight module form an instrument display screen, and the central control information display screen and the instrument display screen share the same glass cover plate, the backlight back plate and the display screen PCBA to form a full-lamination type duplex screen;
The MCU chip is used for receiving the display screen information of the dual screen and transmitting the display screen information to the SoC chip;
the display screen information comprises display signals, touch signals and display screen state information, and the display screen information is provided by the liquid crystal display module, the backlight module and the sensor and the audio chip on the display screen PCBA in the dual-screen;
the SoC chip is used for calculating and processing the display screen information to obtain display screen control information, and transmitting the display screen control information to the MCU chip;
and the MCU chip is used for generating a control instruction based on the display screen control information and controlling the current display pictures of the central control information display screen and the instrument display screen in the dual-screen through the control instruction.
Optionally, the display control system further includes: a deserializer chip and a serializer chip;
the deserializer chip is arranged on the display screen PCBA in the dual-screen, and the serializer chip is arranged in the host;
the deserializer chip is connected with the MCU chip and the dual screen respectively, and the serializer chip is connected with the SoC chip and the deserializer chip respectively;
The SoC chip is also used for calculating and processing the display screen information to obtain parallel display screen control information, and transmitting the display screen control information to the serializer chip through a preset transmission protocol;
the serializer chip is used for converting the display screen control information into serial data and transmitting the serial data to the deserializer chip;
the deserializer chip is used for converting the serial data into parallel display screen control information and transmitting the display screen control information to the MCU chip;
the deserializer chip and the serializer chip are chips for noise reduction, resolution selection and data processing with built-in reverse polarity protection;
and the serializer chip and the deserializer chip realize high-speed data transmission through a bidirectional serializer bus.
Optionally, the preset transmission protocol is an I2C bus protocol, and the display screen information includes a display signal, a touch signal and display screen status information;
the display signals and the display screen state information are collected through the MCU chip, and the MCU chip transmits the display signals and the display screen state information to the deserializer chip through the I2C bus protocol;
The touch signal is transmitted to the deserializer chip by the central control information display screen and the instrument display screen through a transparent I2C bus protocol;
the deserializer chip is further used for transmitting the display screen information to the serializer chip through a serializer bus protocol;
the serializer chip is further configured to transmit the display signal and the display screen state information to the SoC chip through a master I2C bus protocol, and transmit the touch signal to the SoC chip through the transparent I2C bus protocol;
the SoC chip is also used for calculating and processing the received display screen information, generating display screen signals and state control information based on the display signals and the display screen state information, and generating display screen touch control information based on the touch control signals;
the SoC chip is further used for transmitting the display screen signals and the state control information to the serializer chip through the main control I2C bus protocol, and transmitting the display screen touch control information to the serializer chip through the transparent I2C bus protocol;
the serializer chip is also used for converting the parallel display control information transmitted by the SoC chip into serial data and transmitting the serial data to the deserializer chip at a high speed through a serial bus protocol;
The deserializer chip is also used for converting the received display screen control information into parallel data again, and then transmitting the display screen signals and the state control information to the MCU chip through the main control I2C bus protocol;
the MCU chip is further used for generating a control instruction based on the display screen signal and the state control information, and the control instruction is used for controlling the central control information display screen and the instrument display screen;
the deserializer chip is further used for transmitting the touch control information of the display screen to the central control information display screen and the instrument display screen through the transparent I2C bus protocol.
Optionally, the preset transmission protocol is a UART protocol, and the display screen information includes a display signal, a touch signal and display screen state information;
the MCU chip is also used for receiving the display signals transmitted by the dual-screen through a display screen SPI interface protocol and receiving the touch signals transmitted by the dual-screen through an I2C bus protocol;
the MCU chip is also used for collecting the display screen state information of the duplex screen and transmitting the display signal, the touch signal and the display screen state information to the deserializer chip through the UART protocol;
The deserializer chip is further configured to transmit the display signal, the touch signal and the display screen status information to the serializer chip through a serializer bus protocol;
the serializer chip is further configured to transmit the display signal, the touch signal, and the display screen status information to the SoC chip through the UART protocol;
the SoC chip is further configured to generate the display screen control information based on the display signal, the touch signal, and the display screen state information, and transmit the display screen control information to the serializer chip through the UART protocol;
the serializer chip is also used for converting the parallel display control information transmitted by the SoC chip into serial data and transmitting the serial data to the deserializer chip at a high speed through a serial bus protocol;
the deserializer chip is also used for converting the received display screen control information into parallel data again, and then transmitting the display screen control information to the MCU chip through the UART protocol;
the MCU chip is also used for generating a control instruction based on the display screen control information, and the control instruction is used for controlling the central control information display screen and the instrument display screen.
Optionally, the deserializer chip includes: a first deserializer chip and a second deserializer chip;
the first deserializer chip is connected with the central control information display screen through the LVDS interface, the central control information display screen is connected with the first universal interface of the MCU chip, the second deserializer chip is connected with the instrument display screen through the LVDS interface, the instrument display screen is connected with the second universal interface of the MCU chip, the SoC chip is connected with the serializer chip through the eDP or DSI interface, and the serializer chip is connected with the first deserializer chip and the second deserializer chip respectively through the LVDS interface.
Optionally, the display control system further includes a first backlight driving chip and a second backlight driving chip;
the first backlight driving chip is respectively and electrically connected with the central control information display screen and the MCU chip, and the second backlight driving chip is respectively and electrically connected with the instrument display screen and the MCU chip.
Optionally, the host includes: the SoC control card, the shielding cover, the radiating fin, the upper cover, the lower cover and the antenna of the SoC chip are arranged;
the antenna is electrically connected with the SoC control card;
The radiating fin and the shielding cover are arranged on the first surface of the SoC control card, the upper cover is connected with the first surface of the SoC control card, and the lower cover is connected with the second surface of the SoC control card.
In addition, in order to achieve the above object, the present invention also provides a dual screen, including: the device comprises a glass cover plate, OCA optical adhesive, a central control information liquid crystal display module, an instrument liquid crystal display module, a central control screen backlight module, an instrument screen backlight module, a backlight backboard, structural adhesive and a display screen PCBA;
the display screen PCBA is arranged on the backlight backboard, buffer foam is arranged between the central control information liquid crystal display module and the central control screen backlight module, the buffer foam is arranged between the instrument liquid crystal display module and the instrument screen backlight module, the backlight backboard is respectively attached to the central control screen backlight module and the instrument screen backlight module through heat conduction double faced adhesive tapes, the backlight backboard is attached to the glass cover plate through structural adhesives, and the glass cover plate is attached to the central control information liquid crystal display module and the instrument liquid crystal display module through OCA optical adhesives to form a fully attached integrated structure;
The central control information liquid crystal display module and the central control screen backlight module form a central control information display screen, the instrument liquid crystal display module and the instrument screen backlight module form an instrument display screen, and the central control information display screen and the instrument display screen share the same glass cover plate, the backlight back plate and the display screen PCBA form a full-lamination type duplex screen.
Optionally, the dual screen further includes: an optical film and a shield;
the optical film is attached to the glass cover plate in a film coating mode, and is subjected to at least one of integral black treatment, fingerprint prevention, dazzle prevention and reflection prevention;
the shielding cover is connected with the display screen PCBA and the backlight backboard;
the backlight backboard is used for radiating heat of the display screen PCBA, and the shielding cover is used for electromagnetic shielding of the display screen PCBA;
the central control information liquid crystal display module and the instrument liquid crystal display module are liquid crystal display modules, and the central control screen backlight module and the instrument screen backlight module are backlight modules;
the liquid crystal display module is controlled by driving a thin film field effect transistor through an FPCA flexible circuit board with a driving chip, and an electromagnetic shielding adhesive film is stuck on the FPCA flexible circuit board for protection and electromagnetic shielding functions;
The backlight module is controlled by a backlight driving chip, the MCU chip on the display screen PCBA and the backlight driving chip are electrically connected to realize communication and control of the backlight module, and a display screen mounting point is arranged on the backlight backboard and used for mounting the central control information display screen and the instrument display screen; the backlight backboard is connected with the backlight module, the glass cover plate, the dual-screen PCBA, the shielding cover and the rear shell at the same time;
the backlight backboard is made of die-casting magnesium alloy, and is provided with a plurality of heat dissipation structure reinforcing rib positions.
Optionally, the dual screen further includes: an IML switch panel and the rear case;
the socket of the IML switch panel is fixed on the backlight backboard through a buckle and a screw;
the rear shell is connected with the backlight backboard.
The invention provides a display control system and a duplex screen, wherein the display control system comprises: a control card provided with an SoC chip, a host, a display screen PCBA provided with an MCU chip and a duplex screen; the external part of the display screen PCBA and the external part of the host are respectively provided with an LVDS interface, the MCU chip is connected with the SoC chip through the LVDS interfaces, and the MCU chip is respectively connected with the two display screens of the dual-screen through the display screen PCBA; the dual screen includes: the device comprises a glass cover plate, OCA optical adhesive, a central control information liquid crystal display module, an instrument liquid crystal display module, a central control screen backlight module, an instrument screen backlight module, a backlight backboard, structural adhesive and a display screen PCBA; the display screen PCBA is arranged on the backlight backboard, buffer foam is arranged between the central control information liquid crystal display module and the central control screen backlight module, the buffer foam is arranged between the instrument liquid crystal display module and the instrument screen backlight module, the backlight backboard is respectively attached to the central control screen backlight module and the instrument screen backlight module through heat conduction double faced adhesive tapes, the backlight backboard is attached to the glass cover plate through structural adhesives, and the glass cover plate is attached to the central control information liquid crystal display module and the instrument liquid crystal display module through OCA optical adhesives to form a fully attached integrated structure; the central control information liquid crystal display module and the central control screen backlight module form a central control information display screen, the instrument liquid crystal display module and the instrument screen backlight module form an instrument display screen, and the central control information display screen and the instrument display screen share the same glass cover plate, the backlight back plate and the display screen PCBA to form a full-lamination type duplex screen; the invention receives the display screen information of the duplex screen through the MCU chip and transmits the display screen information to the SoC chip; the display screen information comprises display signals, touch signals and display screen state information, and the display screen information is provided by the liquid crystal display module, the backlight module and the sensor and the audio chip on the display screen PCBA in the dual-screen; the SoC chip calculates and processes the display screen information to obtain display screen control information, and transmits the display screen control information to the MCU chip; and the MCU chip generates a control instruction based on the display screen control information and controls the current display pictures of the central control information display screen and the instrument display screen in the dual-screen through the control instruction. Compared with the prior art that data between the SoC chip and the display screen are concentrated on the SoC chip, the system transmits the data between the SoC chip and the display screens through the MCU chip, effectively reduces the load of the SoC chip and improves the stability of information transmission between the SoC chip and the display screens.
Drawings
FIG. 1 is a schematic diagram of a first embodiment of a display control system according to the present invention;
FIG. 2 is a schematic diagram of a second embodiment of a display control system according to the present invention;
FIG. 3 is a schematic diagram of a third embodiment of a display control system according to the present invention;
FIG. 4 is a schematic diagram of a system architecture based on an I2C bus protocol in a third embodiment of a display control system according to the present invention;
FIG. 5 is a schematic diagram of a UART protocol-based system according to a third embodiment of the present invention;
FIG. 6 is a schematic diagram of a host in a third embodiment of the display control system according to the present invention;
FIG. 7 is a schematic diagram of a dual screen embodiment of the present invention;
FIG. 8 is a schematic diagram of the front structure of a dual screen in a dual screen embodiment of the present invention;
FIG. 9 is a schematic view of the rear structure of a dual screen in a dual screen embodiment of the present invention;
FIG. 10 is a schematic view of a rear flat cable of a dual panel in accordance with an embodiment of the present invention;
FIG. 11 is a schematic side view of a dual screen in accordance with an embodiment of the present invention.
The achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, but not all embodiments, all embodiments obtained by persons skilled in the art based on the embodiments in the present invention without making creative efforts, belong to the protection scope of the present invention.
It should be noted that the descriptions of "first," "second," etc. in the embodiments of the present invention are for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, features defining "first" and "second" may explicitly or implicitly include at least one such feature, and further, the technical solutions between the various embodiments may be combined with one another, but must be based on the fact that one of ordinary skill in the art can implement such a combination, and such combination should be considered to be absent or outside the scope of the claimed invention when such combination is inconsistent or otherwise unrealizable.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a first embodiment of a control system according to the present invention.
As shown in fig. 1, in this embodiment, the display control system includes: host 100 provided with SoC chip 101 and display screen PCBA provided with MCU chip 201, and dual screen 200.
The outside of display screen PCBA and the outside of host computer 100 all are equipped with the LVDS interface, MCU chip 201 pass through the LVDS interface with SoC chip 101 is connected, MCU chip 201 pass through the display screen PCBA respectively with two display screens of duplex screen.
The dual screen 200 includes: glass apron, OCA optical cement, well accuse information liquid crystal display module, instrument liquid crystal display module, well accuse screen backlight unit, instrument screen backlight unit, backlight backplate, structural adhesive and display screen PCBA.
The display screen PCBA is located on the back plate of being shaded, well accuse information liquid crystal display module with be equipped with between the well accuse screen backlight unit and cushion bubble cotton, instrument liquid crystal display module with be equipped with between the instrument screen backlight unit cushion bubble cotton, the back plate of being shaded pass through the heat conduction double faced adhesive tape respectively with well accuse screen backlight unit with instrument screen backlight unit laminating, the back plate of being shaded pass through the structural adhesive with the laminating of glass apron, the glass apron pass through OCA optical cement with well accuse information liquid crystal display module with instrument liquid crystal display module laminating forms the integrated structure of full laminating.
The central control information liquid crystal display module and the central control screen backlight module form a central control information display screen 2021, the instrument liquid crystal display module and the instrument screen backlight module form an instrument display screen 2022, and the central control information display screen and the instrument display screen share the same glass cover plate, the backlight back plate and the display screen PCBA form a full-lamination type duplex screen.
The MCU chip 201 is configured to receive display screen information of the display screens, and transmit the display screen information to the SoC chip 101.
It should be noted that, the dual-screen may be the central control information display screen 2021 and the meter display screen 2022, or may be a central control information display screen and an air conditioner screen, where the two display screens are designed to form the dual-screen 200 through a structure integration. In this embodiment and the following embodiments, the central control information display 2021 and the meter display 2022 are used to describe a plurality of displays, but the present invention is not limited thereto.
It can be understood that the display screen information includes display signals, touch signals, and display screen status information. The display screen information is provided by the liquid crystal display module, the backlight module and the sensor and the audio chip on the display screen PCBA in the dual-screen. The display signal can be a signal of display screen brightness, pixels and other display pictures, the touch signal can be a signal triggered by a user through touch on the display screen, and the display screen state information can be state information of temperature, diagnosis, upgrading, abnormality and the like.
In a specific implementation, the MCU chip 201 may receive display information transmitted by each display through related protocols (such as I2C protocol and SPI protocol), and then transmit part or all of the display information to the SoC chip 101 through a protocol supported by the LVDS interface (such as I2C protocol or UART protocol).
It should be understood that, because part or all of the display screen information is transmitted to the SoC chip 101 through the MCU chip 201, power consumption consumed by the SoC chip 101 to directly collect the display screen information is reduced, and load of the SoC chip 101 is reduced.
The SoC chip 101 is configured to calculate and process the display screen information, obtain display screen control information, and transmit the display screen control information to the MCU chip 201.
It can be understood that, the SoC chip 101 generates display screen control information through calculation processing based on the received display screen information, and transmits the display screen control information to the MCU chip 201 and the display screen through a protocol supported by the LVDS interface (such as an I2C protocol or a UART protocol), and finally, the MCU chip sends specific control instructions to the corresponding hardware such as the display screen, the backlight source, the temperature sensor, the audio, and the like.
It should be noted that, the control information of the display screen may be information that controls or adjusts each display screen so that the picture of the display screen meets the expected requirement, such as audio, dimming, diagnosis, upgrading, touch control, image information, and the like.
In a specific implementation, the SoC chip 101 may detect a display effect or image information of the display screen based on the display screen information, for example, if there is an abnormality based on a display signal in the display information, corresponding diagnostic information may be generated based on the abnormality condition to diagnose the display screen; if abnormal brightness of a display screen is detected based on the display screen information, a corresponding dimming signal can be generated to dim the display screen; if the driving version of the display screen is detected to be not the latest version based on the display screen information, a corresponding upgrading signal can be generated to upgrade the driving of the display screen. The MCU chip can be used for judging whether the working temperature of the display screen is in a normal range according to the temperature detected by the temperature sensor. The audio information is identified and processed by a power amplifier chip and an audio processing DSP (Digital Signal Processing) chip which are connected with the MCU chip.
It should be understood that, the SoC chip 101 does not need to directly receive the display information transmitted by each display screen, or directly transmit the display control information to each display screen, but performs computation and processing work for generating the display screen control information, and the MCU chip 201 and the display screen perform data transceiving operation and send specific control instructions and operation execution, so that the load of the SoC chip 101 can be effectively reduced, the display screen control information can be ensured to be stably generated, and the stability of information transmission is improved.
MCU chip 201 is used for generating control instruction based on the display screen control information, and controlling the current display pictures of the central control information display screen and the instrument display screen in the dual-screen through the control instruction.
In a specific implementation, when the MCU chip 201 receives the display control information, a control instruction may be generated based on the display control information, and the current display and status of the central control information display 2021 and the meter display 2022 are adjusted accordingly by the control instruction.
The system of the embodiment comprises: a control card provided with an SoC chip, a host, a display screen PCBA provided with an MCU chip and a duplex screen; the external part of the display screen PCBA and the external part of the host are respectively provided with an LVDS interface, the MCU chip is connected with the SoC chip through the LVDS interfaces, and the MCU chip is respectively connected with the two display screens of the dual-screen through the display screen PCBA; the dual screen includes: the device comprises a glass cover plate, OCA optical adhesive, a central control information liquid crystal display module, an instrument liquid crystal display module, a central control screen backlight module, an instrument screen backlight module, a backlight backboard, structural adhesive and a display screen PCBA; the display screen PCBA is arranged on the backlight backboard, buffer foam is arranged between the central control information liquid crystal display module and the central control screen backlight module, the buffer foam is arranged between the instrument liquid crystal display module and the instrument screen backlight module, the backlight backboard is respectively attached to the central control screen backlight module and the instrument screen backlight module through heat conduction double faced adhesive tapes, the backlight backboard is attached to the glass cover plate through structural adhesives, and the glass cover plate is attached to the central control information liquid crystal display module and the instrument liquid crystal display module through OCA optical adhesives to form a fully attached integrated structure; the central control information liquid crystal display module and the central control screen backlight module form a central control information display screen, the instrument liquid crystal display module and the instrument screen backlight module form an instrument display screen, and the central control information display screen and the instrument display screen share the same glass cover plate, the backlight back plate and the display screen PCBA to form a full-lamination type duplex screen; in the embodiment, the MCU chip receives the display screen information of the dual screen and transmits the display screen information to the SoC chip; the display screen information comprises display signals, touch signals and display screen state information, and the display screen information is provided by the liquid crystal display module, the backlight module and the sensor and the audio chip on the display screen PCBA in the dual-screen; the SoC chip calculates and processes the display screen information to obtain display screen control information, and transmits the display screen control information to the MCU chip; and the MCU chip generates a control instruction based on the display screen control information and controls the current display pictures of the central control information display screen and the instrument display screen in the dual-screen through the control instruction. In the embodiment, the MCU chip is arranged between the SoC chip and the display screen, and the MCU chip receives display screen signals and transmits display screen control information.
Referring to fig. 2, fig. 2 is a schematic structural diagram of a second embodiment of the control system according to the present invention.
Based on the first embodiment, in this embodiment, the display control system further includes: a deserializer chip 203 and a serializer chip 102.
The deserializer chip 203 is disposed on the PCBA in the dual screen 200, and the serializer chip 102 is disposed in the host 100.
The deserializer chip 203 is connected with the MCU chip 201, the central control information display screen 2021 and the instrument display screen 2022, and the serializer chip 102 is connected with the SoC chip 101 and the deserializer chip 203.
The serializer chip 102 is connected to an LVDS interface outside the host 102, and the deserializer chip 203 is connected to an LVDS interface outside the dual-screen 200, so that the serializer chip 102 is connected to the deserializer chip 203 through the LVDS interface.
The SoC chip 101 is configured to generate the display control information in parallel based on the display information, and transmit the display control information to the serializer chip 202 through a preset transmission protocol.
It should be noted that, the predetermined transmission protocol may be a protocol supporting the SoC chip 101 and the serializer chip 102 to communicate, such as an I2C bus protocol or a UART protocol.
It can be understood that the deserializer chip 203 can receive the display screen information transmitted by the MCU chip 201, the central control display screen 201 or the meter display screen 2022, process the display screen information, transmit the processed display screen information to the serializer chip 102 through the GMSL or FPD Link serializer bus, and transmit feedback to the SoC chip 101 through the eDP or DSI interface and the preset transmission protocol by the serializer chip 102.
In a specific implementation, the SoC chip 101 may generate parallel display screen control information based on the display screen information, and then transmit the display screen control information to the serializer chip 102 through the preset transmission protocol.
It should be noted that, the display control information transmitted by the central control display 201 or the meter display 2022 may include, in addition to image data, a frame synchronization signal, a line synchronization signal, a pixel clock signal, and audio data, where a large amount of information may form parallel data, and the parallel data cannot be transmitted at high speed, so the serializer chip 102 and the deserializer chip 203 may be configured to process a large amount of data in the display information, so as to satisfy high-speed transmission of data and improve data transmission efficiency.
The serializer chip 102 is configured to convert the display control information into serial data and transmit the serial data to the deserializer chip 203.
In a specific implementation, the serializer chip 102 may convert the display control information into serial data, i.e., a serial data stream, and transmit the serial data to the deserializer chip 203 through a GMSL or FPD Link signal line with a high frequency to increase a transmission speed.
The deserializer chip 203 is configured to convert the received serial data into parallel display control information, and transmit the display control information to the MCU chip 201 and the display.
In a specific implementation, the deserializer chip 203 may deserialize the serial data to restore the serial data to the parallel display control information, so as to ensure that the MCU chip 201 receives accurate display control information on the premise of meeting the requirement of high-speed data transmission. After obtaining the display control information, the deserializer chip 203 may transmit the display control information to the MCU chip 201, and the MCU chip 201 controls the central control information display 2021 and the meter display 2022 based on the display control information.
The communication between the SoC chip and the MCU chip not only can be transmitted through the Main control main_i2C bus protocol or the UART protocol, but also can be subjected to data processing such as noise reduction, resolution selection, built-in reverse polarity protection and the like through the deserializer chip and the serializer chip, and information is transmitted between the deserializer chip and the serializer chip through the bidirectional serializer bus.
Referring to fig. 3, fig. 3 is a schematic structural diagram of a third embodiment of the display control system according to the present invention, and in fig. 3, each display screen includes: a central control information display 2021 and an instrument display 2022, and the deserializer chip 203 includes: a first deserializer chip 2031 and a second deserializer chip 2032.
The first deserializer chip 2031 is connected with the central control information display screen 2021 through the LVDS interface, the central control information display screen 2021 is connected with the MCU chip 201, the second deserializer chip 2032 is connected with the instrument display screen 2022 through the LVDS interface, the instrument display screen 2022 is connected with the MCU chip 201, the SoC chip 101 is connected with the serializer chip 102 through the eDP or DSI interface, and the serializer chip 102 is connected with the first deserializer chip 2031 and the second deserializer chip 2032 through the LVDS interface respectively.
As shown in fig. 3, the system further includes a first backlight driving chip 2041 and a second backlight driving chip 2042.
The first backlight driving chip 2041 is connected to the central control information display 2021 and the MCU chip 201, and the second backlight driving chip 2042 is connected to the meter display 2022 and the MCU chip 201.
In addition, the SoC chip 101 may also be connected to a power interface of the dual-screen 200 for dual-screen control and power indication.
In this embodiment, when the preset transmission protocol is an I2C bus protocol, referring to fig. 4, fig. 4 is a schematic diagram of a system structure based on the I2C bus protocol in a third embodiment of the control system according to the present invention. In fig. 4, the overall connection relationship of each component is consistent with the schematic structural diagram shown in fig. 3, where the central control information display 2021 is connected to a general input/output interface of the MCU chip 201, the instrument display 2021 is connected to a general input/output interface of the MCU chip 201, the general input/output interface may be tft_rst/tp_rst, the first backlight driving chip 2041 and the second backlight driving chip 2042 and the MCU chip 201 all perform data transmission through an I2C bus protocol, the MCU chip 201 may perform PWM pulse width modulation on the first backlight driving chip 2041 and the second backlight driving chip 2042, and the serializer chip 102 is connected to the SoC chip 101 through an eDP or DSI interface, and the serializer chip 102 and the SoC chip 101 also support the first I2C bus protocol, the second I2C bus protocol, and the main_i2c bus protocol for data transmission.
The first I2C bus protocol is a protocol for transmitting a touch signal of the central control information display 2021, the second I2C bus protocol is a protocol for transmitting a touch signal of the meter display 2022, and the main_i2c bus protocol is a protocol for transmitting a display signal and status control information.
The display screen information includes touch signals, display signals (images, frame/line synchronization signals, audio, pixel clocks, etc.), and display screen state information (temperature, display normal/abnormal, etc.).
When the preset transmission protocol is the I2C bus protocol, the touch signal is directly transmitted to the SoC chip 101 through the deserializer and the serializer chip through the transparent I2C bus, and does not pass through the MCU chip 201.
The display signals and the display screen state information are collected through the MCU chip 201, and the MCU chip 201 transmits the display signals and the display screen state information to the deserializer chip 203 through the I2C bus protocol.
The display signals and the display screen state information are collected through the MCU chip 201, and the MCU chip 201 transmits the display signals and the display screen state information to the deserializer chip 203 through the I2C bus protocol.
In a specific implementation, the MCU chip 201 may collect display signals and display screen status information of both the central control information display screen 2021 and the meter display screen 2022 through a general input/output interface, and then transmit the display signals and the status information of the central control information display screen 2021 and the meter display screen 2022 to the first deserializer chip 2031 and the second deserializer chip 2032 respectively through an I2C bus protocol.
The deserializer chip 203 is further configured to transmit the display information to the serializer chip 102 via a serializer bus protocol.
In a specific implementation, the first deserializer chip 2031 and the second deserializer chip 2032 may respectively receive the display screen information transmitted by the central control information display screen 2021 and the instrument display screen 2022 based on the I2C bus protocol and the MCU chip, and then transmit to the serializer chip 102 through the serializer bus.
It should be understood that, in this embodiment, the display screen information is collected together by the deserializer chip 203 through the MCU chip and the transparent I2C bus protocol (the touch signal is directly collected from the display screen), so that the display screen information is prevented from being collected by the MCU chip 201, the load of the MCU chip 201 is effectively reduced, and the stability of data transmission is improved.
The serializer chip 102 is further configured to transmit the display signal and the display screen status information to the SoC chip through a master I2C bus protocol, and transmit the touch signal to the SoC chip through a transparent I2C bus protocol
The serializer chip 102 transmits the received display information (touch signal, display signal and status information) to the SoC chip 101 through the I2C bus protocol. Specifically, the serializer chip 102 may transmit the display signals and the status information of each display screen to the SoC chip 101 through the eDP or DSI interface and the main_i2c bus, transmit the touch signal of the central control information display screen 2021 through the first I2C bus protocol, and transmit the touch signal of the meter display screen 2022 through the second I2C bus protocol.
It should be appreciated that by transmitting different display information to the SoC chip 101 based on different manners, the accuracy of data transmission is effectively improved.
The SoC chip 101 is further configured to calculate and process the received display screen information, generate a display screen signal and state control information based on the display signal and the display screen state information, and generate display screen touch control information based on the touch signal.
The SoC chip 101 is further configured to transmit the display screen signal and the state control information to the serializer chip 102 through the master I2C bus protocol, and transmit the display screen touch control information to the serializer chip 102 through the transparent I2C bus protocol.
In a specific implementation, the SoC chip 101 may analyze the state of each display screen based on the display information, and then generate corresponding display screen state control information based on the analysis result, and may output corresponding display signal control information in response to a display signal in the display screen information, and output corresponding display screen touch control information in response to a touch signal in the display screen information. The display signal and the state control information are transmitted to the serializer chip 102 through the Main control main_i2c bus protocol, and the display screen touch control information is transmitted to the serializer chip 102 through the transparent I2C bus protocol.
The serializer chip 102 is further configured to convert the parallel display control information transmitted from the SoC chip 101 into serial data, and transmit the serial data to the deserializer chip 203 at a high speed through a serial bus protocol.
It should be appreciated that the serializer chip 102 converts parallel data such as touch signals, images, frame/line synchronization signals, pixel clocks, audio, etc. received from the SoC chip into serial data to facilitate high-speed transmission of a large amount of data, and transmits the serial data to the above-described first and second deserializer chips 2031 and 2032 through GMSL or FPD Link serializer bus protocol.
The deserializer chip 203 is further configured to re-convert the received display control information into parallel data, and then transmit the display signal and the state control information to the MCU chip 101 through the master I2C bus protocol.
After receiving the display control information, the deserializer chip 203 converts the serial data into parallel display control information again, and transmits the display control information to the MCU chip 201 and the display. Specifically, the deserializer chips 2031 and 2032 transmit display screen signals and status control information to the MCU chip 201 via the master I2C bus protocol.
The MCU chip 201 is further configured to generate a control instruction based on the display screen signal and the status control information, where the control instruction is used to control the central control information display screen and the instrument display screen.
The deserializer chip 203 is further configured to transmit the touch control information of the display screen to the central control information display screen and the instrument display screen through the transparent I2C bus protocol.
The MCU chip 201 generates control instructions based on display signals and status control information, and is used for controlling the central control information display screen and the meter display screen, and the deserializer chips 2031 and 2032 are also used for transmitting display screen touch control information to the central control information display screen and the meter display screen through a transparent I2C bus protocol, so as to respectively realize accurate control of the central control information display screen 2021 and the meter display screen 2022.
It should be noted that, when the preset transmission protocol is an I2C bus protocol, the MCU chip 201 may perform data transmission with the first backlight driving chip 2041 and the second backlight driving chip 2042 through an I2C bus, receive backlight driving signals transmitted by the first backlight driving chip 2041 and the second backlight driving chip 2042, and feed back the backlight driving signals to the SoC chip 101 through the deserializer chip 203 and the serializer chip 102, and the display control information fed back by the SoC chip 101 may include backlight control information for controlling the first backlight driving chip 2041 and the second backlight driving chip 2042, and the MCU chip 201 may control the first backlight driving chip 2041 and the second backlight driving chip 2042 based on the backlight control information, so as to adjust the brightness of the central control information display 2021 and the meter display 2022.
It may be understood that temperature sensors may be further disposed at preset positions of the central control information display 2021 and the meter display 2022, each temperature sensor may be capable of detecting temperatures of the central control information display 2021 and the meter display 2022, the MCU chip 201 may collect temperature signals of the temperature sensors at preset positions of the central control information display 2021 and temperature signals of the temperature sensors at preset positions of the meter display 2022 through the general input/output interface, and then feedback the temperature signals to the SoC chip 101 through the deserializer chip 203 and the serializer chip 102, and the display control information fed back by the SoC chip 101 may include corresponding temperature control information, so that the MCU chip 201 may control and monitor temperatures of the central control information display 2021 and the meter display 2022 based on the temperature control information.
In this embodiment, the control system scheme based on I2C bus protocol transmission shown in fig. 4 is characterized in that the touch signal of the display screen is transmitted to the SoC chip through the transparent I2C bus protocol and the serial bus protocol, and the MCU chip only collects other display signals and status information except the touch signal. The SoC chip calculates and processes the collected display screen information to obtain display screen control information, wherein touch signal control information is transmitted to the serializer through two transparent I2C bus protocols, then is transmitted to the deserializer at a high speed through the serial bus protocols, and is directly transmitted to the two display screens through the two transparent I2C buses, and display signals and state control information are transmitted to the MCU chip through the main_I2C buses through the serializer, the serial bus protocols and the deserializer. The display control information realizes high-speed transmission and analysis processing of mass data through a serializer/deserializer technology. The communication between the SoC chip computing platform and the MCU chip control platform is realized through a Main control main_I2C bus, and the communication comprises information transmission such as audio, image, dimming, diagnosis, upgrading and the like.
Further, in the present embodiment, when the predetermined transmission protocol is a UART protocol, referring to fig. 5, fig. 5 is a schematic diagram showing a system structure based on the UART protocol in a third embodiment of the control system according to the present invention. In fig. 5, the overall connection relationship of each component is the same as that of the structural schematic diagram shown in fig. 3, wherein the central control information display screen 2021 and the MCU chip 201 perform data transmission through an SPI interface protocol and an I2C bus protocol, the instrument display screen 2022 and the MCU chip 201 perform data transmission through an SPI interface protocol and an I2C bus protocol, the MCU chip 201 and the first deserializer chip 2031 and the second deserializer chip 2032 perform data transmission through a UART protocol, and the deserializer chip and the serializer perform data transmission through a high-frequency GMSL or FPD Link serializer signal line, and the SoC chip 101 and the serializer chip 102 perform data transmission through a UART protocol.
In addition, the backlight driving signals of the first and second backlight driving chips 2041 and 2042 are transmitted to the MCU chip 201 through PWM pulse width modulation.
The MCU chip 201 is further configured to receive the display signals and the status information transmitted by the display screens through a display screen SPI interface protocol, and receive the touch control signals transmitted by the display screens through an I2C bus protocol.
In a specific implementation, the MCU chip 201 may receive the display signals and the status information transmitted by the central control information display 2021 and the meter display 2022 through the display SPI protocol, and receive the touch signals transmitted by the central control information display 2021 and the meter display 2022 through the I2C bus protocol. The display and state signals of the display screen information and the touch control signals are transmitted through different protocols, so that the transmission precision of the display information is effectively improved.
The MCU chip 201 is further configured to transmit display information to the deserializer chip 203 via the UART protocol.
In a specific implementation, the MCU chip 201 may transmit the display information of the central control information display 2021 to the first deserializer chip 2031 and transmit the display information of the instrument display 2022 to the second deserializer chip 2032 through a UART protocol. In addition, the MCU chip 201 may also transmit the collected backlight driving signal and the temperature signal to the deserializer chip through UART protocol.
The deserializer chip 203 is configured to transmit different display information to the serializer 102 via GMSL or FPD Link serializer bus protocol.
In a specific implementation, the first deserializer chip 2031 may receive the display information transmitted by the central control information display 2021 based on the UART protocol, and then transmit the received display information to the serializer chip 102 through the serializer bus protocol, and the second deserializer chip 2032 may receive the display information transmitted by the meter display 2022 based on the UART protocol, and then transmit the received display information to the serializer chip 102 through the serializer bus protocol.
The serializer chip 102 transmits the received display information composed of the touch signal, the display signal and the status information to the SoC chip 101 through the UART protocol.
In a specific implementation, after the serializer chip 102 obtains the display information of the central control information display 2021 and the instrument display 2022, the display signals and the state information of each display are transmitted to the SoC chip 101 through the eDP or DSI interface, and the touch signals of each display are transmitted to the SoC chip 101 through the UART protocol.
The SoC chip 101 is configured to generate display control information based on the received display information calculation processing, transmit the display control information to the serializer chip 102 through a UART protocol, implement high-speed transmission and analysis processing of mass data through a serializer/deserializer technology, transmit the display control information obtained by the SoC chip calculation processing to the MCU chip, and finally send specific control instructions to corresponding hardware such as a display, a backlight source, a temperature sensor, and audio.
In a specific implementation, the SoC chip 101 may analyze the status of each display screen based on the received display information, then calculate and process based on the analysis result to generate corresponding display screen control information, then transmit the display screen control information to the serializer chip 102 through the UART protocol, and the serializer chip 102 converts the display screen control information from parallel data to serial data, and then transmit the display screen control information to the first deserializer chip 2031 and the second deserializer chip 2032 at high speed through the GMSL or FPD Link serializer bus protocol. The first deserializer chip 2031 and the second deserializer chip 2032 convert the display screen control information from serial data to parallel data such as images, frame/line synchronization signals, pixel clocks, audio, etc., and then transmit the parallel data to the MCU chip 201, and the MCU chip 201 issues a control instruction based on the received display screen control information to achieve accurate control of the central control information display screen 2021 and the meter display screen 2022.
Further, the model of the serializer chip 102 related to the above-described embodiment may be MAX96755, the model of the deserializer chip 203 (including the first deserializer chip 2031 and the second deserializer chip 2032) may be MAX96752, and the model of the backlight driving chip 204 (including the first backlight driving chip 2041 and the second backlight driving chip 2042) may be MPS3364. The above model is illustrative and not limiting.
Further, in the present embodiment, referring to fig. 6, fig. 6 is a schematic structural diagram of a host in the dual-screen embodiment of the present invention. In fig. 6, the host 100 includes: the SoC control card 6 (i.e. the SoC chip 100 in fig. 1-5) provided with the SoC chip, the shielding case 12, the heat sink 13, the upper cover 14, the lower cover 15, the WIFI antenna 16, and the screws;
the WIFI antenna 16 is electrically connected to the SoC control card 11, the first surface of the SoC control card 11 is provided with a heat sink 13 and a shield 12, the upper cover 14 is connected to the first surface of the SoC control card 11, and the lower cover 15 is connected to the second surface of the SoC control card 11.
In a specific implementation, the upper cover 14, the lower cover 15, and the shielding case 12 of the host 100 may be made of metal or alloy with high heat dissipation rate. The heat sink 13, the upper cover 14, and the lower cover 15 are used for heat dissipation of the SoC chip 101 in the host 100, and the shielding case 12 is used for electromagnetic shielding. Meanwhile, a plurality of heat dissipation holes may be provided in the upper cover 14 and the lower cover 15 to increase a heat dissipation area and improve heat dissipation efficiency.
In addition, in order to achieve the above objective, the embodiment of the present invention further provides a dual screen, and referring to fig. 7, fig. 7 is a schematic structural diagram of the dual screen embodiment of the present invention.
Based on the above-described third embodiment, in the present embodiment, the dual screen 200 includes: glass cover plate 22, OCA optical cement 25, well accuse information LCD module 211, instrument LCD module 212, well accuse screen backlight module 241, instrument screen backlight module 242, back of the body backplate 26, structural cement 29 and display screen PCBA 27.
The display screen PCBA 27 is arranged on the backlight backboard 26, buffer foam is arranged between the central control information liquid crystal display module 211 and the central control screen backlight module 241, the buffer foam is arranged between the instrument liquid crystal display module 212 and the instrument screen backlight module 242, the backlight backboard 26 is respectively attached to the central control screen backlight module 241 and the instrument screen backlight module 242 through heat conduction double faced adhesive tapes, the backlight backboard 26 is attached to the glass cover plate 22 through structural adhesives, and the glass cover plate 22 is attached to the central control information liquid crystal display module 211 and the instrument liquid crystal display module 212 through OCA optical adhesives to form a fully attached integrated structure.
The central control information liquid crystal display module 211 and the central control screen backlight module 241 form a central control information display screen 2021, the meter liquid crystal display module 212 and the meter screen backlight module 242 form a meter display screen 2022, and the central control information display screen 2021 and the meter display screen 2022 share the same glass cover plate 22, the backlight back plate 26 and the display screen PCBA 27 form a full-lamination type duplex screen 200.
In a specific implementation, the optical film 23 is attached to the glass cover plate 22 in a film coating manner, the glass cover plate 22 is attached to the central control information liquid crystal display module 211 and the meter liquid crystal display module 212 through the OCA optical adhesive 25, and buffer foam is arranged around the central control information liquid crystal display module 211 and the meter liquid crystal display module 212 and used for buffering structural stress between the central control screen backlight module 241 and the meter screen backlight module 242, the central control screen backlight module 241 and the meter screen backlight module 242 are attached to the backlight back plate 26 through heat-conducting double-sided adhesive, and the backlight back plate 26 is attached to the glass cover plate 22 through the structural adhesive 29. By means of the structural design, the central control information liquid crystal display module 211, the backlight module 241, the instrument liquid crystal display module 212 and the backlight module 242 are assembled in a full-lamination mode, waterproof and dustproof performances of the duplex screen are effectively improved, and splicing flatness of the central control information display screen 2021 and the instrument display screen 2022 can be guaranteed.
The central information liquid crystal display module 211 and the backlight module 241 are core modules constituting the central information display screen 2021, and the meter liquid crystal display module 212 and the backlight module 242 are core modules constituting the meter display screen 2022.
Further, in this embodiment, the dual screen 200 further includes: an optical film 23 and a shield 28.
The optical film 23 is attached to the glass cover plate 22 in a film coating mode, and the optical film 23 is subjected to integrated black treatment and at least one of fingerprint prevention, glare prevention and reflection prevention; the shielding cover 28 is connected with the display screen PCBA 27 and the backlight backboard 26; the backlight back plate 26 is used for radiating heat of the display screen PCBA 27, and the shielding cover 28 is used for electromagnetic shielding of the display screen PCBA 27.
The central control information liquid crystal display module 211 and the meter liquid crystal display module 212 are liquid crystal display modules, and the central control screen backlight module 241 and the meter screen backlight module 242 are backlight modules; the liquid crystal display module is controlled by driving a thin film field effect transistor through an FPCA flexible circuit board with a driving chip, and an electromagnetic shielding adhesive film is stuck on the FPCA flexible circuit board for protection and electromagnetic shielding functions; the backlight module is controlled by a backlight driving chip, the MCU chip on the display screen PCBA and the backlight driving chip are electrically connected to realize communication and control of the backlight module, and a display screen mounting point is arranged on the backlight backboard and used for mounting the central control information display screen and the instrument display screen; the backlight backboard is connected with the backlight module, the glass cover plate, the dual-screen PCBA, the shielding cover and the rear shell at the same time; the backlight back plate 26 is made of die-casting magnesium alloy, and is provided with a plurality of heat dissipation structure reinforcing rib positions.
It should be noted that, the display screen PCBA 28 is connected to the backlight backboard through a screw, and is connected to the shielding case through a screw, so as to be used for heat dissipation and electromagnetic shielding of the PCBA respectively; the display screen PCBA is respectively connected with the liquid crystal display and the backlight module through different flat cables to realize control communication of display and backlight; the display screen PCBA is connected with an SoC control card in the host/domain controller through an LVDS interface and a power interface to form a display control system, so that data transmission and control of the display screen are realized, and particularly communication between an MCU chip on the display screen PCBA and the SoC chip in the host is realized.
Further, in this embodiment, the dual screen 200 further includes: an IML switch panel 210 and a rear case 211;
the socket of the IML switch panel 210 is fastened to the backlight back plate 26 by a fastener and a screw; the rear case 211 is connected to the backlight back plate 26 by screws.
In a specific implementation, the rear housing 211 may be made of plastic material such as pc+abs, so as to reduce the overall weight of the dual-screen 200.
Preferably, the backlight back plate 26 is made of die-cast magnesium alloy. The backlight backboard 26 is provided with a display screen mounting point, so that the backlight backboard can also be used for mounting brackets for mounting a display screen, and no additional mounting brackets are needed, so that the cost is saved, the weight of the whole machine is reduced, and the structural stability is improved. The back light plate is connected backlight module, glass apron, PCBA, shield cover and backshell, mounting screw simultaneously, in order to improve structural strength, and back light plate 26 is die-casting magnesium alloy material, and sets up a plurality of structure strengthening rib positions.
It should be noted that, referring to fig. 8, fig. 8 is a schematic front view of the dual-screen in the dual-screen embodiment of the present invention. In fig. 8, the central control information display 2021 is above the meter display 2022, and the IML switch panel 210 is below the meter display 2022. The central control information display screen 2021 and the instrument display screen 2022 are bonded with the glass cover plate 22 in a full bonding mode, an optical film 23 is arranged above the glass cover plate 22, and the optical film 23 can be subjected to integrated black treatment, so that no splicing trace exists between the central control information display screen 2021 and the instrument display screen 2022 when seen from the front, and the optical film 23 is not arranged below the IML switch panel 210, therefore, an obvious dividing line exists between the IML switch panel 210 and the instrument display screen 2022, and a user can conveniently execute key operation.
In addition, the central control information display 2021 and the meter display 2022 support a touch function, and the touch module may be an incell structure embedded in the liquid crystal panel.
It will be appreciated that referring to fig. 9, fig. 9 is a schematic diagram showing the back structure of the dual screen in the dual screen embodiment of the present invention. In fig. 9, each structure in the dual screen 200 is disposed in the rear case 211, i.e., is covered by the rear case 211. Both the mounting brackets above and below the back of the dual screen 200 are provided by the backlight back plate 26, with the mounting bracket above being used to mount the center control information display 2021 and the mounting bracket below being used to mount the meter display 2022. The display PCBA 27 is disposed in the middle of the dual-screen 200, and the display PCBA 27 is provided with an exposed LVDS interface and a power interface for connection with the host 100. The back of the dual-screen 200 is also provided with an exposed IML switch panel interface, one end of which is connected to the IML switch panel 210, and the other end of which is connected to the host 100.
Wherein, because the mounting points (i.e. the mounting brackets) of the central control information display screen 2021 and the instrument display screen 2022 are all arranged on the backlight backboard 26, no additional bracket is required to be installed, the weight of the duplex screen can be reduced, and the production cost can be reduced.
For ease of understanding, the description is given with reference to fig. 10, but the present solution is not limited thereto. Fig. 10 is a schematic view of a back flat cable structure of a dual-screen in the dual-screen embodiment of the present invention, in fig. 10, a liquid crystal display module (i.e. a central control information liquid crystal display module 211 and an instrument liquid crystal display module 212) and a backlight module (i.e. a central control screen backlight module 241 and an instrument screen backlight module 242) are connected to a display screen PCBA 27 through a liquid crystal display flat cable and a backlight flat cable to realize communication, and the display screen PCBA 27 is connected to a host 100 through an LVDS interface and a power interface to realize data transmission and control of the dual-screen 200. The liquid crystal display module is controlled by a flexible circuit board (FPCA) with a driving chip and a thin film field effect transistor (TFT), and an electromagnetic shielding film is stuck on the FPCA for protection and electromagnetic shielding. The backlight backboard 26 is provided with display screen mounting points (i.e. upper and lower mounting brackets in the figure) for mounting the liquid crystal display screen, and no additional mounting brackets are needed, because the backlight backboard 26 is simultaneously connected with the backlight module, the glass cover plate 22, the PCBA 27, the shielding cover 28 and the rear shell 211, the backlight backboard 26 can be made of die-casting magnesium alloy materials for improving the structural strength, and a plurality of structural reinforcing rib positions are arranged. The receptacle of the IML switch panel 210 (i.e., the IML switch panel key interface) is secured by a snap and screw through the rear housing aperture.
It will be appreciated that referring to fig. 11, fig. 11 is a schematic side view of a dual screen in a dual screen embodiment of the present invention. In fig. 11, the IML switch panel 210 is inclined at a predetermined angle (e.g., 60 °) on the side of the dual screen 200 so that a user performs a key operation.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or system. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or system that comprises the element.
The foregoing embodiment numbers of the present invention are merely for the purpose of description, and do not represent the advantages or disadvantages of the embodiments.
The foregoing description is only of the preferred embodiments of the present invention, and is not intended to limit the scope of the invention, but rather is intended to cover any equivalents of the structures or equivalent processes disclosed herein or in the alternative, which may be employed directly or indirectly in other related arts.
Claims (10)
1. A display control system, the display control system comprising: a control card provided with an SoC chip, a host, a display screen PCBA provided with an MCU chip and a duplex screen;
the external part of the display screen PCBA and the external part of the host are respectively provided with an LVDS interface, the MCU chip is connected with the SoC chip through the LVDS interfaces, and the MCU chip is respectively connected with the two display screens of the dual-screen through the display screen PCBA;
the dual screen includes: the device comprises a glass cover plate, OCA optical adhesive, a central control information liquid crystal display module, an instrument liquid crystal display module, a central control screen backlight module, an instrument screen backlight module, a backlight backboard, structural adhesive and a display screen PCBA;
the display screen PCBA is arranged on the backlight backboard, buffer foam is arranged between the central control information liquid crystal display module and the central control screen backlight module, the buffer foam is arranged between the instrument liquid crystal display module and the instrument screen backlight module, the backlight backboard is respectively attached to the central control screen backlight module and the instrument screen backlight module through heat conduction double faced adhesive tapes, the backlight backboard is attached to the glass cover plate through structural adhesives, and the glass cover plate is attached to the central control information liquid crystal display module and the instrument liquid crystal display module through OCA optical adhesives to form a fully attached integrated structure;
The central control information liquid crystal display module and the central control screen backlight module form a central control information display screen, the instrument liquid crystal display module and the instrument screen backlight module form an instrument display screen, and the central control information display screen and the instrument display screen share the same glass cover plate, the backlight back plate and the display screen PCBA to form a full-lamination type duplex screen;
the MCU chip is used for receiving the display screen information of the dual screen and transmitting the display screen information to the SoC chip;
the display screen information comprises display signals, touch signals and display screen state information, and the display screen information is provided by the liquid crystal display module, the backlight module and the sensor and the audio chip on the display screen PCBA in the dual-screen;
the SoC chip is used for calculating and processing the display screen information to obtain display screen control information, and transmitting the display screen control information to the MCU chip;
and the MCU chip is used for generating a control instruction based on the display screen control information and controlling the current display pictures of the central control information display screen and the instrument display screen in the dual-screen through the control instruction.
2. The display control system of claim 1, wherein the display control system further comprises: a deserializer chip and a serializer chip;
the deserializer chip is arranged on the display screen PCBA in the dual-screen, and the serializer chip is arranged in the host;
the deserializer chip is connected with the MCU chip and the dual screen respectively, and the serializer chip is connected with the SoC chip and the deserializer chip respectively;
the SoC chip is also used for calculating and processing the display screen information to obtain parallel display screen control information, and transmitting the display screen control information to the serializer chip through a preset transmission protocol;
the serializer chip is used for converting the display screen control information into serial data and transmitting the serial data to the deserializer chip;
the deserializer chip is used for converting the serial data into parallel display screen control information and transmitting the display screen control information to the MCU chip;
the deserializer chip and the serializer chip are chips for noise reduction, resolution selection and data processing with built-in reverse polarity protection;
And the serializer chip and the deserializer chip realize high-speed data transmission through a bidirectional serializer bus.
3. The display control system of claim 2, wherein the preset transmission protocol is an I2C bus protocol, and the display screen information includes display signals, touch signals, and display screen status information;
the display signals and the display screen state information are collected through the MCU chip, and the MCU chip transmits the display signals and the display screen state information to the deserializer chip through the I2C bus protocol;
the touch signal is transmitted to the deserializer chip by the central control information display screen and the instrument display screen through a transparent I2C bus protocol;
the deserializer chip is further used for transmitting the display screen information to the serializer chip through a serializer bus protocol;
the serializer chip is further configured to transmit the display signal and the display screen state information to the SoC chip through a master I2C bus protocol, and transmit the touch signal to the SoC chip through the transparent I2C bus protocol;
the SoC chip is also used for calculating and processing the received display screen information, generating display screen signals and state control information based on the display signals and the display screen state information, and generating display screen touch control information based on the touch control signals;
The SoC chip is further used for transmitting the display screen signals and the state control information to the serializer chip through the main control I2C bus protocol, and transmitting the display screen touch control information to the serializer chip through the transparent I2C bus protocol;
the serializer chip is also used for converting the parallel display control information transmitted by the SoC chip into serial data and transmitting the serial data to the deserializer chip at a high speed through a serial bus protocol;
the deserializer chip is also used for converting the received display screen control information into parallel data again, and then transmitting the display screen signals and the state control information to the MCU chip through the main control I2C bus protocol;
the MCU chip is further used for generating a control instruction based on the display screen signal and the state control information, and the control instruction is used for controlling the central control information display screen and the instrument display screen;
the deserializer chip is further used for transmitting the touch control information of the display screen to the central control information display screen and the instrument display screen through the transparent I2C bus protocol.
4. The display control system of claim 2, wherein the predetermined transmission protocol is UART protocol, and the display screen information includes display signals, touch signals, and display screen status information;
The MCU chip is also used for receiving the display signals transmitted by the dual-screen through a display screen SPI interface protocol and receiving the touch signals transmitted by the dual-screen through an I2C bus protocol;
the MCU chip is also used for collecting the display screen state information of the duplex screen and transmitting the display signal, the touch signal and the display screen state information to the deserializer chip through the UART protocol;
the deserializer chip is further configured to transmit the display signal, the touch signal and the display screen status information to the serializer chip through a serializer bus protocol;
the serializer chip is further configured to transmit the display signal, the touch signal, and the display screen status information to the SoC chip through the UART protocol;
the SoC chip is further configured to generate the display screen control information based on the display signal, the touch signal, and the display screen state information, and transmit the display screen control information to the serializer chip through the UART protocol;
the serializer chip is also used for converting the parallel display control information transmitted by the SoC chip into serial data and transmitting the serial data to the deserializer chip at a high speed through a serial bus protocol;
The deserializer chip is also used for converting the received display screen control information into parallel data again, and then transmitting the display screen control information to the MCU chip through the UART protocol;
the MCU chip is also used for generating a control instruction based on the display screen control information, and the control instruction is used for controlling the central control information display screen and the instrument display screen.
5. The display control system of any one of claims 2 to 4, wherein the deserializer chip comprises: a first deserializer chip and a second deserializer chip;
the first deserializer chip is connected with the central control information display screen through the LVDS interface, the central control information display screen is connected with the first universal interface of the MCU chip, the second deserializer chip is connected with the instrument display screen through the LVDS interface, the instrument display screen is connected with the second universal interface of the MCU chip, the SoC chip is connected with the serializer chip through the eDP or DSI interface, and the serializer chip is connected with the first deserializer chip and the second deserializer chip respectively through the LVDS interface.
6. The display control system of claim 5, further comprising a first backlight driving chip and a second backlight driving chip;
The first backlight driving chip is respectively and electrically connected with the central control information display screen and the MCU chip, and the second backlight driving chip is respectively and electrically connected with the instrument display screen and the MCU chip.
7. The display control system of claim 1, wherein the host comprises: the SoC control card, the shielding cover, the radiating fin, the upper cover, the lower cover and the antenna of the SoC chip are arranged;
the antenna is electrically connected with the SoC control card;
the radiating fin and the shielding cover are arranged on the first surface of the SoC control card, the upper cover is connected with the first surface of the SoC control card, and the lower cover is connected with the second surface of the SoC control card.
8. A dual screen for use in the display control system of any one of claims 1 to 7.
9. The dual screen of claim 8, wherein the dual screen further comprises: an optical film and a shield;
the optical film is attached to the glass cover plate in a film coating mode, and is subjected to at least one of integral black treatment, fingerprint prevention, dazzle prevention and reflection prevention;
the shielding cover is connected with the display screen PCBA and the backlight backboard;
The backlight backboard is used for radiating the display screen PCBA, and the shielding cover is used for electromagnetic shielding of the display screen PCBA;
the central control information liquid crystal display module and the instrument liquid crystal display module are liquid crystal display modules, and the central control screen backlight module and the instrument screen backlight module are backlight modules;
the liquid crystal display module is controlled by driving a thin film field effect transistor through an FPCA flexible circuit board with a driving chip, and an electromagnetic shielding adhesive film is stuck on the FPCA flexible circuit board for protection and electromagnetic shielding functions;
the backlight module is controlled by a backlight driving chip, the MCU chip on the display screen PCBA and the backlight driving chip are electrically connected to realize communication and control of the backlight module, and a display screen mounting point is arranged on the backlight backboard and used for mounting the central control information display screen and the instrument display screen; the backlight backboard is connected with the backlight module, the glass cover plate, the display screen PCBA, the shielding cover and the rear shell at the same time;
the backlight backboard is made of die-casting magnesium alloy, and is provided with a plurality of heat dissipation structure reinforcing rib positions.
10. The dual screen of claim 9, wherein the dual screen further comprises: an IML switch panel and the rear case;
The socket of the IML switch panel is fixed on the backlight backboard through a buckle and a screw;
the rear shell is connected with the backlight backboard.
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| CN202311829758.1A CN117472313B (en) | 2023-12-28 | 2023-12-28 | Display control system and duplex screen |
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| CN202311829758.1A CN117472313B (en) | 2023-12-28 | 2023-12-28 | Display control system and duplex screen |
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| CN117472313A (en) | 2024-01-30 |
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