Ultrathin vehicle-mounted ceiling screen
By separating the system driver board of the car ceiling screen from the display module and integrating the driver part, the screen cannot be thin, heated and EMC problems, achieving lower cost and better performance.
Patent Information
- Application Number
- CN202422288663.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-19
- Publication Date
- 2025-06-06
- Estimated Expiration
- 2034-09-19
AI Technical Summary
In the existing automotive ceiling screen design, the screen cannot be thin, the heating problem is serious, EMC testing and rectification are difficult, and the design and production costs are high.
By designing and optimizing the circuit principle and mechanical structure, the entire system driver board of the display screen is separated from the display module, and connected only through a cable that supports high-speed signal transmission, and the two parts of the display screen driver and the motor driver are integrated.
The ultra-thin design of the screen is realized, reducing heating problems, optimizing the EMC design, and reducing design and production costs.
Smart Images
Figure CN222946686U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to an ultra-thin vehicle-mounted ceiling screen. Background Art
[0002] The existing solutions are mainly separate solutions for screen drive integration and motor drive integration, which mainly install the screen and the entire drive system board inside the screen. The motor drive board is installed inside the flip mechanism. This design will bring the following disadvantages:
[0003] 1. The screen cannot be made very thin because the entire system board is installed inside the screen, which contains power inductors, large electrolytic capacitors, and very large power connectors and signal connectors. Because these devices are very large in height and volume, the entire screen cannot be made thin.
[0004] 2. In terms of heat generation, because the entire system driver board in the screen is included in the screen, there are many power devices and heat generation devices on the entire system board, so the heat generation is very large, and a certain design cost needs to be invested in heat treatment.
[0005] 3. The entire system driver board is inside the display module, and the back cover is a plastic cover, which cannot provide good protection in terms of EMC testing and rectification. Therefore, certain optimization costs will be added to circuit design and device selection.
[0006] 4. The two independent modules will also lead to repeated use of electronic components, which will increase certain design costs. At the same time, the production is divided into two parts. Under the current significant cost compression of new energy vehicles, it also brings a large part of cost waste and pressure. Utility Model Content
[0007] In order to solve the above technical problems, this application provides an ultra-thin vehicle-mounted ceiling screen, which is mainly designed and optimized in terms of circuit principle and mechanical structure, and the entire system driver board of the display screen is separated from the display module, and the two are only connected by a flat cable that supports high-speed signal transmission. At the same time, the display screen drive and motor drive are also integrated into one part.
[0008] Specifically, the utility model provides an ultra-thin vehicle-mounted ceiling screen, a motor drive board assembly and a flip mechanism, wherein the display screen includes a display module and a system drive board assembly; the ultra-thin vehicle-mounted ceiling screen also includes:
[0009] The display module and the system driver board assembly are independently arranged;
[0010] The system drive board assembly and the motor drive board assembly are combined into an integrated board and placed behind the back plate of the flip mechanism.
[0011] Preferably, the display module includes a TCON control chip, a power management chip, and a DCDC power circuit.
[0012] Preferably, the system driver board assembly includes a deserializer, an MCU, a backlight driver, a DCDC, a motor driver chip, an LDO and a peripheral circuit. Among them, the peripheral circuit includes other auxiliary circuits, such as filters, protection circuits, interface circuits, etc., to support the normal operation of the system driver board.
[0013] Preferably, the MCU and the motor driving chip form a motor driving circuit, and drive the motor by outputting a PWM signal to the motor driving chip.
[0014] Preferably, the motor drive board assembly includes a brushless motor drive, a brushed motor drive and a DCDC power supply circuit.
[0015] Preferably, the GMSL2 signal and I2C and GPIO control signal powered and input by the cockpit host are transparently transmitted to the deserializer of the system driver board, and the EDP signal and GPIO signal deserialized by the deserializer are used to drive the display screen and light up the backlight.
[0016] Preferably, the display module is connected to the system driving board assembly via a data connector.
[0017] As described above, the ultra-thin vehicle-mounted ceiling screen of the utility model has the following beneficial effects:
[0018] 1. Separating the module and the driver board can make the screen thinner, because the module part has no high-current power supply, no large inductance, capacitance, and no power and signal connectors, only a simple TCON control part, and the TCON only has some TCON control circuits and some peripheral bias circuits, mainly chip resistors and capacitors. After separation, larger devices are not on the display, so the screen can be made very thin.
[0019] 2. With the separation of the display module and the system driver board, the main high-power devices, such as electrolytic capacitors, power inductors on Buck-Boost, and some high-power devices such as backlight driver chips, have been separated. After the main thermal power devices are separated, there are no high-power devices on the module, so the heating of the display can be greatly improved.
[0020] 3. The ceiling screen was originally divided into two parts: display driver and motor driver. There is a probability of reuse in some circuit design and device use, and PCBA is also divided into two parts. Both the reuse of electronic devices and the separate production of PCBA have brought design waste and production costs. Now, while separating the display module from the design, the display driver and the motor driver are also integrated together, which can optimize the design cost and production cost. Secondly, because the main thermal power devices have been placed on the metal backplane of the entire flip mechanism, there is no need to add any heat dissipation pads, which can save heat dissipation materials while also improving the heat better. At the same time, because the entire system driver board is in the metal backplane and metal shielding cover of the flip mechanism, it also brings very good optimization in EMC design. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] Figure 1 This is a schematic diagram of an ultra-thin vehicle-mounted ceiling screen described in this application.
[0022] Figure 2 This is a schematic diagram of the system drive board assembly and the motor drive board assembly described in this application. DETAILED DESCRIPTION
[0023] The following is a further detailed description of a smart medicine box of the present application in conjunction with specific embodiments and drawings.
[0024] Specifically, Figure 1 As shown, the utility model provides an ultra-thin vehicle-mounted ceiling screen, a motor drive board assembly and a flip mechanism, wherein the display screen includes a display module and a system drive board assembly; the ultra-thin vehicle-mounted ceiling screen also includes:
[0025] The display module and the system driver board assembly are independently arranged;
[0026] like Figure 2 As shown, the system drive board assembly and the motor drive board assembly are combined into an integrated board and placed behind the back plate of the flip mechanism.
[0027] By separating the display driver from the screen group and connecting the module and the electronic part only through connecting wires, not only the circuit and structural design are optimized, the power of the screen group itself is only 3.33W (the original power of the display power supply is 35.77W), the heat generation is also greatly optimized, and the design cost is also optimized.
[0028] Combining the system driver board of the entire display screen with the display screen module will make it impossible to make the entire display screen thinner due to some overly large power devices and large connectors. At the same time, it will also have a thick and heavy feeling, and the overall visual experience is not good.
[0029] The motor drive part is also an independent system, so it requires additional effort in circuit design, device materials, and connector selection, which will increase design costs.
[0030] Preferably, the display module includes a TCON control chip, a power management chip, and a DCDC power circuit
[0031] Preferably, the system driver board assembly includes a deserializer, an MCU, a backlight driver, a DCDC, a motor driver chip, an LDO and peripheral circuits.
[0032] Preferably, the MCU and the motor driver chip form a motor drive circuit, and drive the motor by outputting a PWM signal to the motor driver chip. The MCU is mainly responsible for some GPIO control of the drive system board, AD signal detection, NTC detection and error diagnosis detection of each chip.
[0033] Preferably, the motor drive board assembly includes a brushless motor drive, a brushed motor drive and a DCDC power supply circuit.
[0034] Preferably, the GMSL2 signal and I2C and GPIO control signal powered and input by the cockpit host are transparently transmitted to the deserializer of the system driver board, and the EDP signal and GPIO signal deserialized by the deserializer are used to drive the display screen and light up the backlight.
[0035] Preferably, the display screen and the motor part are both peripheral accessories, and the display screen is currently connected through an ultra-thin high-speed data connector. The motor part is connected through a common wiring harness.
[0036] The present application provides an ultra-thin vehicle-mounted ceiling screen, which is mainly designed and optimized in terms of circuit principle and mechanical structure, and the entire system driver board of the display screen is separated from the display module, and the two are connected only by a flat cable that supports high-speed signal transmission. At the same time, the display screen drive and motor drive are also integrated into one part.
[0037] This application can be made thinner, and this is also a technical trend for car ceiling screens. Compared with the current technical solutions, this solution can not only achieve significant optimization in terms of heat generation, but also greatly improve cost design, and can avoid the design and production costs caused by repeated use of two system components and repeated production.
[0038] This application separates the module and the driver board, which can make the screen thinner. This is because the module part has no high-current power supply, no large inductors and capacitors, and no power and signal connectors. It only has a simple TCON control part, and the TCON only has some TCON control circuits and some peripheral bias circuits, mainly chip resistors and capacitors. After separation, larger devices are not on the display, so the screen can be made very thin.
[0039] With the separation of the display module and the system driver board, the main high-power devices, such as electrolytic capacitors, power inductors on Buck-Boost, and some high-power devices such as backlight driver chips, have been separated. After the main thermal power devices are separated, there are no high-power devices on the module, so the heating of the display can be greatly improved.
[0040] In this application, the ceiling screen was originally divided into two parts: display screen drive and motor drive. There is a probability of reuse in some circuit design and device use, and the PCBA is also divided into two parts. Both the reuse of electronic devices and the separate production of PCBA have brought design waste and production costs. Now, while separating the display screen module from the design, the display screen drive part and the motor drive part are also integrated together, which can optimize the design cost and production cost. Secondly, because the main thermal power devices have been placed on the metal backplane of the entire flip mechanism, there is no need to add any heat dissipation pads, which can save heat dissipation materials while also improving the heat better. At the same time, because the entire system driver board is in the metal backplane and metal shielding cover of the flip mechanism, it also brings very good optimization in EMC design.
[0041] Although example embodiments have been described herein with reference to the accompanying drawings, it should be understood that the above example embodiments are merely exemplary and are not intended to limit the scope of the present application to this. Those of ordinary skill in the art may make various changes and modifications therein without departing from the scope and spirit of the present application. All these changes and modifications are intended to be included within the scope of the present application as required by the appended claims.
[0042] Those of ordinary skill in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.
[0043] In the several embodiments provided in this application, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic, for example, the division of the units is only a logical function division, and there may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another device, or some features can be ignored or not executed.
[0044] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.
[0045] Although the description of the present application is carried out in conjunction with the above specific embodiments, it is obvious that those skilled in the art can make many substitutions, modifications and changes based on the above content. Therefore, all such substitutions, improvements and changes are included in the spirit and scope of the appended claims.
Claims
1. An ultra-thin vehicle-mounted ceiling screen, comprising a display screen, a motor drive board assembly and a flip mechanism, wherein the display screen comprises a display module and a system drive board assembly; characterized in that: The display module and the system driver board assembly are independently arranged; The system drive board assembly and the motor drive board assembly are combined into an integrated board and placed behind the back plate of the flip mechanism.
2. The ultra-thin vehicle-mounted ceiling screen according to claim 1, characterized in that: The display module includes a TCON control chip, a power management chip, and a DCDC power circuit.
3. The ultra-thin vehicle-mounted ceiling screen according to claim 1, characterized in that: The system driver board components include a deserializer, an MCU, a backlight driver, a DCDC, a motor driver chip, an LDO and peripheral circuits.
4. The ultra-thin vehicle-mounted ceiling screen according to claim 3, characterized in that: The MCU and the motor driving chip form a motor driving circuit, which drives the motor by outputting a PWM signal to the motor driving chip.
5. The ultra-thin vehicle-mounted ceiling screen according to claim 1, characterized in that: The motor drive board assembly includes a brushless motor drive, a brushed motor drive and a DCDC power supply circuit.
6. The ultra-thin vehicle-mounted ceiling screen according to claim 1, characterized in that: The cockpit host computer supplies power and inputs GMSL2 signals and I2C and GPIO control signals, which are transparently transmitted to the deserializer of the system driver board. The EDP signals and GPIO signals deserialized by the deserializer are used to drive the display and light up the backlight.
7. The ultra-thin vehicle-mounted ceiling screen according to claim 1, characterized in that: The display module is connected to the system driving board assembly via a data connector.