Display module, display device and vehicle system

Abstract

The embodiment of the present application provides a display module, a display device and an in-vehicle system. The display module includes: a display panel, a touch flexible circuit board, a power adapter flexible circuit board and a driver circuit board. The first port group of the touch flexible circuit board is electrically connected to the touch circuit located at the first end of the display panel; the driver circuit board is electrically connected to the input port located at the second end of the display panel. The second port group of the touch flexible circuit board includes an additional power signal port group; the power adapter flexible circuit board, the first port group is electrically connected to the first power signal terminal group of the display panel, and the second port group is electrically connected to the power signal port group; the second port group of the touch flexible circuit board and the driver circuit board are both constructed to be electrically connected to the mainboard. The embodiment of the present application achieves that the power supply voltage at the first end of the display panel is the same as the power supply voltage at the second end, and the brightness is the same. At the same time, the use of the power adapter flexible circuit board is reduced, thereby reducing costs.

Description

Technical Field

[0001] The present application relates to the field of electronic technology, and more specifically, to a display module, a display device, and a vehicle-mounted system. Background Art

[0002] The varying needs of various automakers in current in-vehicle display devices have led to different display module formats. In the increasingly popular vertical OLED (Organic Light-Emitting Diode) automotive display solutions, those with fewer COFs (Chip On Film) and more appropriate bezel widths are gaining popularity.

[0003] However, the large aspect ratio of the vertical display module creates a significant voltage difference between the top and bottom sections of the OLED automotive display panel. This creates a significant voltage drop at the top of the display panel, leading to inconsistent brightness between the top and bottom sections. A common solution currently involves adding a power supply to the top of the display panel and interconnecting the power supplies via a flexible printed circuit board (FPC) adapter to reduce the voltage difference. However, the increased area of ​​the FPC adapter increases costs. Summary of the Invention

[0004] This application addresses the shortcomings of existing methods, and provides a display module, display device and vehicle-mounted system to solve the technical problem in the existing technology that a large-area flexible circuit board is required to connect the upper and lower power supplies of the display panel, resulting in increased costs.

[0005] In the first aspect, an embodiment of the present application provides a display module, comprising: a display panel, a touch flexible circuit board, a power adapter flexible circuit board and a driving circuit board; the size of the display panel along the first direction is larger than the size along the second direction, and the display panel includes a first end and a second end along the first direction; the first port group of the touch flexible circuit board is electrically connected to the touch circuit located at the first end of the display panel; the driving circuit board is electrically connected to the input port located at the second end of the display panel; the second port group of the touch flexible circuit board includes an additional power signal port group; the power adapter flexible circuit board, the first port group is electrically connected to the first power signal end group of the display panel, and the second port group is electrically connected to the power signal port group; the second port group of the touch flexible circuit board and the driving circuit board are both constructed to be electrically connected to the mainboard.

[0006] Optionally, the touch flexible circuit board includes an additional first power signal line, the second port group of the power adapter flexible circuit board is electrically connected to the first port group of the first power signal line, and the second port group of the first power signal line is constructed to be electrically connected to the touch and power port group of the main board.

[0007] Optionally, the second port group of the power transfer flexible circuit board serves as the power signal port group and is configured to be electrically connected to the touch and power port group of the mainboard.

[0008] In the second aspect, an embodiment of the present application provides a display device, comprising: a main board and a display module as in the first aspect; the main board includes a touch and power port group, and the second port group of the touch flexible circuit board of the display module is electrically connected to the touch and power port group.

[0009] Optionally, the mainboard includes a power chip and a second power signal circuit, and the touch and power port group includes a power port group; one end of the second power signal circuit is electrically connected to the power chip, and the other end is electrically connected to the power port group; the power port group is connected to the first power signal end group of the second port group of the touch flexible circuit board.

[0010] Optionally, the mainboard includes a touch chip, the touch and power port group includes a touch port group; the touch chip is electrically connected to the touch port group through a signal line; the second port group of the touch flexible circuit board includes a touch signal terminal group, and the touch port group is electrically connected to the touch signal terminal group.

[0011] Optionally, the mainboard includes a display chip, and the display signal port group includes a display port group and a second power signal port group; the display chip is electrically connected to the display port group, and the second power signal port group is electrically connected to the power chip.

[0012] Optionally, the driving circuit board of the display module includes an input signal port group, and the display signal port group is electrically connected to the input signal port group.

[0013] Optionally, the input signal port group includes a third power signal port group and a signal port group, the third power signal port group is electrically connected to the second power signal port group of the display signal port group, and the signal port group is electrically connected to the display port group of the display signal port group.

[0014] In a third aspect, an embodiment of the present application provides a vehicle-mounted system, comprising a display device as described in the second aspect.

[0015] The beneficial technical effects brought about by the technical solutions provided in the embodiments of the present application include:

[0016] In the display module of the embodiment of the present application, the first port group of the touch flexible circuit board is electrically connected to the touch circuit located at the first end of the display panel, and the driver circuit board is electrically connected to the input terminal located at the second end of the display panel. The second port group of the touch flexible circuit board includes an additional power signal port group. The first port group of the power adapter flexible circuit board is electrically connected to the first power signal terminal group of the display panel, and the second port group is electrically connected to the power signal port group. The second port group of the touch flexible circuit board and the driver circuit board are both constructed to be electrically connected to the mainboard. The power signal output from the mainboard is transmitted to the power signal terminal at the second end of the display panel through the driver circuit board. The power signal output from the mainboard is then transmitted to the power signal terminal at the first end of the display panel through the power signal port group of the touch flexible circuit board and the first port group of the power adapter flexible circuit board, thereby ensuring that the voltages at the first and second ends of the display panel are the same. In the display module of the embodiment of the present application, the power adapter flexible circuit board uses a relatively small area.

[0017] Additional aspects and advantages of the present application will be given in part in the following description, which will become apparent from the following description, or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0019] Figure 1 A schematic front view of the structure of a display module provided in an embodiment of the present application;

[0020] Figure 2 A schematic rear view of the structure of a display module provided in an embodiment of the present application;

[0021] Figure 3 A schematic structural diagram of a mainboard of a display device provided in an embodiment of the present application.

[0022] In the picture:

[0023] 100-display panel;

[0024] 200-power transfer flexible circuit board;

[0025] 300 - touch flexible circuit board; 310 - second port group; 311 - power signal port group; 320 - first port group;

[0026] 400-driving circuit board; 410-input signal port group;

[0027] 500 - Mainboard; 510 - Touch and power port group; 511 - Touch port group, 512 - Power port group; 520 - Touch chip; 530 - Display signal port group; 531 - Display port group; 532 - Second power signal port group; 540 - Display chip; 550 - Power chip; 560 - Second power signal line;

[0028] 600-Chip-on-chip film. DETAILED DESCRIPTION

[0029] The following describes the embodiments of the present application in conjunction with the accompanying drawings. It should be understood that the embodiments described below in conjunction with the accompanying drawings are exemplary descriptions for explaining the technical solutions of the embodiments of the present application and do not constitute a limitation on the technical solutions of the embodiments of the present application.

[0030] Those skilled in the art will understand that, unless otherwise stated, the singular forms "a", "an", "said", and "the" used herein may also include plural forms. It should be further understood that the term "comprising" used in the specification of this application refers to the presence of the described features, integers, steps, operations, elements and / or components, but does not exclude the implementation of other features, information, data, steps, operations, elements, components and / or combinations thereof supported by the technical field. The term "and / or" used herein refers to at least one of the items defined by the term, for example, "A and / or B" can be implemented as "A", or as "B", or as "A and B".

[0031] In order to make the objectives, technical solutions and advantages of this application clearer, the implementation methods of this application will be further described in detail below with reference to the accompanying drawings.

[0032] After research, the inventors of this application discovered that, in existing solutions for vertical screen automotive display modules, to address the problem of inconsistent brightness between the first and second ends of the display panel, which results from a large voltage difference between the first and second ends of the display panel (i.e., a large power supply voltage drop at the first end of the display panel), a power supply is added to the upper portion of the display panel and then connected to the power supplies at the first and second ends via a flexible circuit board adapter, thereby reducing the voltage difference between the first and second ends of the display panel. However, the large area of ​​the flexible circuit board used results in increased costs.

[0033] The following is a detailed description of the technical solution of the present application and how the technical solution of the present application solves the above-mentioned technical problems with specific embodiments. It should be noted that the following embodiments can refer to, draw on, or combine with each other, and the same terms, similar features, and similar implementation steps in different embodiments will not be repeated.

[0034] In a first aspect, an embodiment of the present application provides a display module, such as Figure 1-2As shown, the display module includes: a display panel 100 , a touch flexible circuit board 300 , a power transfer flexible circuit board 200 and a driving circuit board 400 .

[0035] The size of the display panel 100 along the first direction is larger than the size along the second direction, and the display panel 100 includes a first end and a second end along the first direction; the first port group 320 of the touch flexible circuit board 300 is electrically connected to the touch circuit located at the first end of the display panel 100; the driving circuit board 400 is electrically connected to the input port located at the second end of the display panel 100.

[0036] The second port group 310 of the touch flexible circuit board 300 includes an additional power signal port group 311 ; the first port group of the power adapter flexible circuit board 200 is electrically connected to the first power signal terminal group of the display panel 100 , and the second port group is electrically connected to the power signal port group 311 .

[0037] The second port group 310 of the touch flexible circuit board 300 and the driving circuit board 400 are both configured to be electrically connected to the main board 500 .

[0038] In the display module of the embodiment of the present application, the first port group of the touch flexible circuit board 300 is electrically connected to the touch circuit located at the first end of the display panel 100, and the driving circuit board 400 is electrically connected to the input end located at the second end of the display panel 100; the second port group 310 of the touch flexible circuit board 300 includes an additional power signal port group 311; the power adapter flexible circuit board 200, the first port group is electrically connected to the first power signal end group of the display panel 100, and the second port group is electrically connected to the power signal port group 311; the second port group 310 of the touch flexible circuit board 300 and the driving circuit board 400 are both constructed to be electrically connected to the mainboard 500. The power signal output from the mainboard 500 is transmitted via the driver circuit board 400 to the power signal terminal at the second end of the display panel 100. The power signal output from the mainboard 500 is then transmitted sequentially via the power signal port group 311 of the touch flexible circuit board 300 and the first port group of the power adapter flexible circuit board 200 to the power signal terminal at the first end of the display panel 100, thereby ensuring that the voltage at the first and second ends of the display panel 100 is the same. In the display module of this embodiment of the present application, the power adapter flexible circuit board 200 utilizes a relatively small area.

[0039] Alternatively, in one embodiment of the present application, see Figure 2-3 The touch flexible circuit board 300 includes an additional first power signal line, the second port group of the power adapter flexible circuit board 200 is electrically connected to the first port group of the first power signal line, and the second port group of the first power signal line is constructed to be electrically connected to the touch and power port group 510 of the main board 500.

[0040] In this embodiment of the present application, the touch-control flexible circuit board 300 and the power adapter flexible circuit board 200 are independent of each other. An additional first power signal line is added to the touch-control flexible circuit board 300. The second port group of the power adapter flexible circuit board 200 is electrically connected to the first port group of the first power signal line. The second port group of the first power signal line is configured to be electrically connected to the touch and power port group 510 of the mainboard 500. The power signal output from the mainboard 500 is transmitted sequentially through the touch and power port group 510, the second port group of the first power signal line, and the power adapter flexible circuit board 200 to the power signal terminal at the first end of the display panel 100.

[0041] Alternatively, in one embodiment of the present application, see Figure 2-3 The second port group of the power transfer flexible circuit board 200 serves as a power signal port group and is configured to be electrically connected to the touch and power port group 510 of the mainboard 500 .

[0042] In this embodiment of the present application, the first port group of the power adapter flexible circuit board 200 is electrically connected to the touch circuit located at the first end of the display panel 100 and the first power signal terminal group of the display panel 100. The second port group of the power adapter flexible circuit board 200 is configured to be electrically connected to the touch and power port group 510 of the mainboard 500. The power signal output from the mainboard 500 is transmitted in sequence through the touch and power port group 510 and the power adapter flexible circuit board to the power signal terminal at the first end of the display panel 100.

[0043] In the examples of this application, see Figure 2 As shown, the Chip On Film (COF) 600 is electrically connected to the display panel 100 through bonding.

[0044] Based on the same inventive concept, in a second aspect, the present application provides a display device, such as Figure 1-3 As shown, the display device includes: a main board 500 and a display module as in the first aspect;

[0045] The main board 500 includes a touch and power port group 510 , and the second port group 310 of the touch flexible circuit board 300 of the display module is electrically connected to the touch and power port group 510 .

[0046] In an embodiment of the present application, the second port group 310 of the flexible circuit board 300 of the display module is electrically connected to the touch and power port group 510, and the power signal output on the main board is transmitted in sequence through the touch and power port group 510, the power signal port 311 of the second port group 310 of the touch flexible circuit board 300 of the display module, and the power adapter flexible circuit board 200 to the power signal end of the first end of the display panel 100.

[0047] Alternatively, in one embodiment of the present application, see Figure 2-3 As shown, the main board 500 includes a power chip 550 and a second power signal line 560, and the touch and power port group 510 includes a power port group 512; one end of the second power signal line 560 is electrically connected to the power chip 550, and the other end is electrically connected to the power port group 512; the power port group 512 is connected to the first power signal end group of the second port group 310 of the touch flexible circuit board 300.

[0048] In the embodiment of the present application, one end of the second power signal line 560 is electrically connected to the power chip 550, and the other end is electrically connected to the power port group 512. The power port group 512 is connected to the first power signal terminal group of the second port group 310 of the touch flexible circuit board 300. Through this connection method, the power signal output by the power chip 550 is transmitted to the power signal terminal at the first end of the display panel 100 through the second power signal line 560, the power port group 512, the first power signal terminal group of the second port group 310 of the touch flexible circuit board 300, and the power adapter flexible circuit board 200.

[0049] Alternatively, in one embodiment of the present application, see Figure 2-3 The mainboard 500 includes a touch chip 520 , and the touch and power port group 510 includes a touch port group 511 ; the touch chip 520 is electrically connected to the touch port group 511 through a signal line.

[0050] The second port group 310 of the touch flexible circuit board 300 includes a touch signal terminal group, and the touch port group is electrically connected to the touch signal terminal group 511 .

[0051] In this embodiment of the present application, the touch chip 520 is electrically connected to the touch port group 511 via signal lines, and the touch signal terminal group in the second port group of the touch flexible circuit board 300 is electrically connected to the touch port group 511. The touch signal output by the touch chip 520 is transmitted to the display panel 100 through the touch port group 511, the touch signal terminal group in the second port group of the touch flexible circuit board 300, and the touch flexible circuit board 300.

[0052] Alternatively, in one embodiment of the present application, see Figure 2-3 As shown, the motherboard 100 includes a display chip 540 , and the display signal port group 530 includes a display port group 531 and a second power signal port group 532 ; the display chip 540 is electrically connected to the display port group 531 , and the second power signal port group 532 is electrically connected to the power chip 550 .

[0053] In the embodiment of the present application, the display chip 540 is electrically connected to the display port group 531 , and the display signal output by the display chip 540 is input to the display port group 531 .

[0054] Alternatively, in one embodiment of the present application, see Figure 2-3 As shown, the driving circuit board 400 of the display module includes an input signal port group 410 , and the display signal port group 530 is electrically connected to the input signal port group 410 .

[0055] In the embodiment of the present application, the power chip 550 is electrically connected to the second power signal port group 532 of the display signal port group 530, and the display signal port group 530 is electrically connected to the input signal port group 410. The power signal output by the power chip 550 is transmitted sequentially through the second power signal port group 532 of the display signal port group 530, the input signal port group 410, and the driver circuit board 400 to the power signal terminal at the second end of the display panel 100.

[0056] Alternatively, in one embodiment of the present application, see Figure 2-3 As shown, the input signal port group 410 includes a third power signal port group and a signal port group. The third power signal port group is electrically connected to the second power signal port group 532 of the display signal port group 530 , and the signal port group is electrically connected to the display port group 531 of the display signal port group 530 .

[0057] In the embodiment of the present application, the third power signal port group is electrically connected to the second power signal port group 532 of the display signal port group 530. The power signal output by the power chip 550 is sequentially transmitted through the second power signal port group 532, the third power signal port group, and the driver circuit board 400, and is transmitted to the power signal terminal at the second end of the display panel 100. The signal port is electrically connected to the display port group 531 of the display signal port group 530. The display signal output by the display chip 540 is sequentially transmitted through the display port group 531, the signal port group, and the driver circuit board 400, and is transmitted to the display panel 100.

[0058] Based on the same inventive concept, in a third aspect, an embodiment of the present application provides a vehicle-mounted system, comprising a display device as in the second aspect.

[0059] The in-vehicle system according to an embodiment of the present application includes a display device according to the second aspect, comprising a display module and a motherboard 500 according to the first aspect. The second port group 310 of the touch flexible circuit board 300 of the display module includes an additional power signal port group 311. The first port group of the power adapter flexible circuit board 200 is electrically connected to the first power signal port group of the display panel 100, and the second port group is electrically connected to the power signal port group 311. The second port group 310 of the touch flexible circuit board 300 of the display module is electrically connected to the touch and power port group 510. One end of a second power signal line 560 is electrically connected to a power chip 550, and the other end is electrically connected to a power port group 512 in the touch and power port group 510. The other end of the power chip 550 is electrically connected to a second power signal port group 532 in the display signal port group 530, which is in turn electrically connected to the input signal port group 410 of the driver circuit board 400.

[0060] In this embodiment of the present application, a portion of the power signal output by the power chip 550 is transmitted to the power signal terminal at the first end of the display panel 100 via the second power signal line 560, the power port group 512 in the touch and power port group 510, the power signal port group 311 in the second port group 310 of the touch flexible circuit board 300, and the power adapter flexible circuit board 200. Another portion of the power signal output by the power chip 550 is transmitted to the power signal terminal at the second end of the display panel 100 via the display signal port group 530, the input signal port group 410 in the driver circuit board 400, and the driver circuit board 400. The display device of the present application simultaneously transmits power signals to the first and second ends of the display panel 100 via the mainboard 500, achieving the same voltage at the first and second ends of the display panel 100, thereby achieving the same brightness at the first and second ends of the display panel 100.

[0061] By applying the embodiments of the present application, at least the following beneficial effects can be achieved:

[0062] 1. In the display module of the embodiment of the present application, the first port group of the touch flexible circuit board 300 is electrically connected to the touch circuit located at the first end of the display panel 100, and the driving circuit board 400 is electrically connected to the input terminal located at the second end of the display panel 100; the second port group 310 of the touch flexible circuit board 300 includes an additional power signal port group 311; the first port group of the power adapter flexible circuit board 200 is electrically connected to the first power signal terminal group of the display panel 100, and the second port group is electrically connected to the power signal port group 311; the second port group 310 of the touch flexible circuit board 300 and the driving circuit board 400 are both constructed to be electrically connected to the mainboard 500. The power signal output from the mainboard 500 is transmitted via the driver circuit board 400 to the power signal terminal at the second end of the display panel 100. The power signal output from the mainboard 500 is then transmitted sequentially via the power signal port group 311 of the touch flexible circuit board 300 and the first port group of the power adapter flexible circuit board 200 to the power signal terminal at the first end of the display panel 100, thereby ensuring that the voltage at the first and second ends of the display panel 100 is the same. In the display module of this embodiment of the present application, the power adapter flexible circuit board 200 utilizes a relatively small area.

[0063] 2. In the embodiment of the present application, a portion of the power signal output by the power chip 550 is transmitted to the power signal terminal at the first end of the display panel 100 via the second power signal line 560, the power port group 512 in the touch and power port group 510, the power signal port group 311 in the second port group 310 of the touch flexible circuit board 300, and the power adapter flexible circuit board 200. Another portion of the power signal output by the power chip 550 is transmitted to the power signal terminal at the second end of the display panel 100 via the display signal port group 530, the input signal port group 410 in the driver circuit board 400, and the driver circuit board 400. The display device of the present application transmits power signals simultaneously to the first and second ends of the display panel 100 via the mainboard 500, achieving the same voltage at the first and second ends of the display panel 100, thereby achieving the same brightness at the first and second ends of the display panel 100.

[0064] Those skilled in the art will appreciate that the steps, measures, and schemes in the various operations, methods, and processes discussed in this application may be interchanged, modified, combined, or deleted. Furthermore, other steps, measures, and schemes in the various operations, methods, and processes discussed in this application may also be interchanged, modified, rearranged, decomposed, combined, or deleted. Furthermore, steps, measures, and schemes in the prior art that are similar to those disclosed in this application may also be interchanged, modified, rearranged, decomposed, combined, or deleted.

[0065] In the description of this application, the directions or positional relationships indicated by words such as "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", and "outside" are exemplary directions or positional relationships based on the accompanying drawings. They are intended to facilitate or simplify the description of the embodiments of this application, and do not indicate or imply that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on this application.

[0066] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. Throughout this application, unless otherwise specified, "plurality" means two or more.

[0067] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to direct connections, indirect connections through an intermediate medium, or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0068] In the description of this specification, specific features, structures, materials or characteristics may be combined in an appropriate manner in any one or more embodiments or examples.

[0069] It should be understood that, although the various steps in the flowchart of the accompanying drawings are displayed in sequence as indicated by the arrows, the order of implementation of these steps is not limited to the order indicated by the arrows. Unless otherwise clearly stated herein, in some implementation scenarios of the embodiments of the present application, the steps in each process can be performed in other orders as required. Moreover, some or all of the steps in each flowchart may include multiple sub-steps or multiple stages based on actual implementation scenarios. Some or all of these sub-steps or stages may be executed at the same time, or may be executed at different times in different scenarios at the execution time. The execution order of these sub-steps or stages may be flexibly configured as required, and the embodiments of the present application do not limit this.

[0070] The above is only part of the implementation methods of the present application. It should be pointed out that for ordinary technicians in this technical field, without departing from the technical concept of the solution of the present application, other similar implementation methods based on the technical ideas of the present application also fall within the protection scope of the embodiments of the present application.

Claims

1. A display module, characterized in that: include: Display panel, touch flexible circuit board, power transfer flexible circuit board and driver circuit board; The display panel has a larger size along the first direction than along the second direction, and the display panel includes a first end and a second end along the first direction; the first port group of the touch flexible circuit board is electrically connected to the touch circuit located at the first end of the display panel; and the driving circuit board is electrically connected to the input port located at the second end of the display panel; The second port group of the touch flexible circuit board includes an additional power signal port group; the first port group of the power transfer flexible circuit board is electrically connected to the first power signal terminal group of the display panel, and the second port group is electrically connected to the power signal port group; The second port group of the touch flexible circuit board and the driving circuit board are both constructed to be electrically connected to the mainboard, wherein the power signal output from the mainboard is transmitted to the power signal terminal at the second end of the display panel through the driving circuit board on the one hand, and is transmitted to the power signal terminal at the first end of the display panel on the other hand through the power signal port group of the touch flexible circuit board and the first port group of the power transfer flexible circuit board in sequence, so that the voltages of the first end and the second end of the display panel are the same.

2. The display module according to claim 1, wherein: The touch flexible circuit board includes an additional first power signal line, the second port group of the power adapter flexible circuit board is electrically connected to the first port group of the first power signal line, and the second port group of the first power signal line is constructed to be electrically connected to the touch and power port group of the main board.

3. The display module according to claim 1, wherein: The second port group of the power transfer flexible circuit board serves as the power signal port group and is configured to be electrically connected to the touch and power port groups of the mainboard.

4. A display device, characterized in that: include: A mainboard and a display module as claimed in any one of claims 1 to 3; The mainboard includes a touch and power port group, and the second port group of the touch flexible circuit board of the display module is electrically connected to the touch and power port group.

5. The display device according to claim 4, wherein: The mainboard includes a power chip and a second power signal circuit, and the touch and power port group includes a power port group; one end of the second power signal circuit is electrically connected to the power chip, and the other end is electrically connected to the power port group; The power port group is connected to the first power signal end group of the second port group of the touch flexible circuit board.

6. The display device according to claim 5, wherein: The mainboard includes a touch chip, and the touch and power port group includes a touch port group; the touch chip is electrically connected to the touch port group via a signal line; The second port group of the touch flexible circuit board includes a touch signal terminal group, and the touch port group is electrically connected to the touch signal terminal group.

7. The display device according to claim 5, wherein: The mainboard includes a display chip, and the display signal port group includes a display port group and a second power signal port group; the display chip is electrically connected to the display port group, and the second power signal port group is electrically connected to the power chip.

8. The display device according to claim 7, wherein: The driving circuit board of the display module includes an input signal port group, and the display signal port group is electrically connected to the input signal port group.

9. The display device according to claim 8, wherein The input signal port group includes a third power signal port group and a signal port group. The third power signal port group is electrically connected to the second power signal port group of the display signal port group. The signal port group is electrically connected to the display port group of the display signal port group.

10. A vehicle-mounted system, characterized in that: The device comprises a display device as claimed in any one of claims 4 to 9.

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