Vehicle-mounted display screen and vehicle

Abstract

The utility model discloses a vehicle-mounted display screen and vehicle, vehicle-mounted display screen includes: display panel, including first display area, circuit board, be located at the back of display panel, a plurality of first type LED array, with circuit board electricity is connected to, and correspond to first display area, and every first type LED array includes at least two LED, a plurality of first type integrated circuit, with circuit board electricity is connected, and every first type integrated circuit with at least two first type LED array corresponds to, and, at least two first type LED array every first type LED array in at least one LED with corresponding first type integrated circuit electricity is connected. The utility model discloses vehicle-mounted display screen can reduce integrated circuit chip's heat, load to and effectively promote area backlight dimming's granularity, precision and flexibility, and enhance visual effect.

Description

Technical Field

[0001] This utility model relates to the field of electronic circuit technology, and in particular to a vehicle-mounted display screen and a vehicle. Background Technology

[0002] As the automotive display industry continues to demand higher contrast ratios, traditional thin-film transistor (TFT) technology has revealed its limitations. The introduction of local dimming technology effectively solves the problem of insufficient contrast while also reducing power consumption, becoming an important means of improving display performance.

[0003] However, this technology also has certain shortcomings, such as the heat dissipation problem of the backlight driver chip. Common solutions on the market include increasing the area of ​​the heat dissipation pads, expanding the chip package size, and even using physical heat dissipation methods such as adding fans. However, these methods inevitably increase the overall cost of the solution, both in the chip development stage and in practical applications, which to some extent restricts the further optimization and popularization of local dimming technology in the automotive display field. Utility Model Content

[0004] The purpose of this invention is to solve the technical problems of high heat, high load, and poor dimming granularity caused by traditional backlight area dimming. This invention provides an in-vehicle display screen and vehicle that can reduce the heat and load of integrated circuit chips, and effectively improve the granularity, accuracy, and flexibility of area backlight dimming, thereby enhancing the visual effect.

[0005] To address the aforementioned technical problems, this utility model discloses an in-vehicle display screen, comprising: a display panel including a first display area; a circuit board disposed on the back of the display panel; a plurality of first-type LED arrays electrically connected to the circuit board and corresponding to the first display area, each first-type LED array including at least two LEDs; and a plurality of first-type integrated circuits electrically connected to the circuit board, each first-type integrated circuit corresponding to at least two first-type LED arrays, and at least one LED in each first-type LED array of the at least two first-type LED arrays being electrically connected to the corresponding first-type integrated circuit.

[0006] In the traditional circuitry of an in-vehicle display, there are usually one or more integrated circuits. However, typically each integrated circuit controls all the LEDs in one LED array, or each integrated circuit controls all the LEDs in several LED arrays.

[0007] On the one hand, each integrated circuit needs to handle a large amount of current and voltage, generating high load and high heat. On the other hand, during the high-temperature operation of the vehicle display, the integrated circuit chip itself experiences a high temperature rise, often being the hottest point in the entire vehicle display. This usually requires heat dissipation, such as increasing the size of the heat sink pads, increasing the package size of the integrated circuit chip, and adding cooling fans. However, this undoubtedly increases the overall cost of the solution, both from the perspective of integrated circuit chip development and usage.

[0008] On the other hand, in-vehicle displays cannot achieve backlight adjustment in small areas. For example, since a single integrated circuit is responsible for controlling all the LEDs in the LED array, when a vehicle enters a tunnel from the external environment, the brightness of the in-vehicle display can only be adjusted globally or over a large area. This may cause the screen to darken over a large area and lose key information such as the UI interface or map navigation (such as navigation arrows, road names, and speed). In other words, the granularity, precision, and flexibility of backlight adjustment are poor.

[0009] Using the above technical solution, in this embodiment of the application, the vehicle display screen has a first display area, which is correspondingly provided with a plurality of first type LED arrays. Each first type LED array includes at least two LEDs. That is, the first display area can be divided into a plurality of sub-areas, and each sub-area corresponds to one LED.

[0010] Based on this, since a single Type I integrated circuit can simultaneously control individual LEDs in each Type I LED array, it's equivalent to a single Type I integrated circuit controlling different sub-regions within the first display area. When the first display area operates for extended periods, multiple Type I integrated circuit chips share the power consumption (in other words, the load is distributed across each Type I integrated circuit, ensuring a balanced load on each), thus reducing heat and temperature rise in the first display area and effectively extending the lifespan of the automotive display screen. Furthermore, there's no need to increase the size of heat dissipation pads, Type I integrated circuit chips, or add cooling fans, effectively reducing costs.

[0011] On the other hand, a single Type I integrated circuit can control at least one LED within different Type I LED arrays, that is, it can control different sub-regions of the first display area. For example, when a vehicle enters a tunnel, different sub-regions within the first display area (one sub-region corresponds to one LED) can independently execute brightness adjustment commands according to the received brightness control signals, realizing fine-grained dynamic area backlight adjustment, effectively improving the granularity, accuracy, and flexibility of backlight dimming in the vehicle display area, and enhancing the visual effect.

[0012] According to another specific embodiment of the present invention, each of the first type integrated circuits corresponds to all of the plurality of first type LED arrays, and at least one LED in each of the plurality of first type LED arrays is electrically connected to the corresponding first type integrated circuit.

[0013] According to another specific embodiment of the present invention, the display panel further includes a second display area, and the display screen further includes:

[0014] At least one second type of LED array is electrically connected to the circuit board and corresponds to the second display area, each second type of LED array including a plurality of LEDs;

[0015] At least one Class II integrated circuit is electrically connected to the circuit board, wherein,

[0016] The at least one second-type integrated circuit corresponds one-to-one with the at least one second-type LED array, and all LEDs in each second-type LED array are electrically connected to their corresponding second-type integrated circuit; or,

[0017] Each of the at least one second-type integrated circuit corresponds to a plurality of second-type LED arrays, and all LEDs in each second-type LED array are electrically connected to the corresponding second-type integrated circuit.

[0018] According to another specific embodiment of the present invention, the area of ​​the first display area is larger than the area of ​​the second display area.

[0019] According to another specific embodiment of the present invention, the first display area is located in the central area of ​​the display screen, and the second display area is located in the edge area of ​​the display screen.

[0020] Using the above technical solution, in this embodiment of the application, the display panel of the vehicle-mounted display screen further includes a second display area. This second display area is provided with at least one second-type LED array. All LEDs in each second-type LED array are controlled by a second-type integrated circuit. The second display area is connected to the first display area and is located at the edge. That is, in this embodiment of the application, the vehicle-mounted display screen uses the first display area as the main display area and the second display area as the secondary display area. The main and secondary display areas are dimmed independently, allowing for dynamic power allocation based on actual application conditions, thereby improving the lifespan and stability of the vehicle-mounted display screen.

[0021] According to another specific embodiment of the present invention, the circuit board includes a lamp board and a driver board connected to each other, the plurality of first-type LED arrays are electrically connected to the lamp board, and the plurality of first-type integrated circuits are electrically connected to the driver board.

[0022] According to another specific embodiment of the present invention, it further includes: a timing controller, which is electrically connected to the drive board.

[0023] The present invention also discloses a vehicle including the vehicle-mounted display screen described in any of the above embodiments. Attached Figure Description

[0024] Figure 1A A circuit diagram showing some embodiments of the present invention employing TFT and local dimming technology is provided.

[0025] Figure 1B The second diagram shows the working circuit diagram of some embodiments of the present invention using TFT and local dimming technology.

[0026] Figure 2A A schematic diagram of an embodiment of the vehicle-mounted display screen of this utility model is shown.

[0027] Figure 2B The second schematic diagram shows an embodiment of the vehicle-mounted display screen of this utility model.

[0028] Figure 3 A schematic diagram of an embodiment of the vehicle-mounted display screen of this utility model is shown. Figure 3 .

[0029] Figure 4 A schematic diagram of a vehicle according to an embodiment of the present invention is shown. Detailed Implementation

[0030] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. Although the description of this utility model will be presented in conjunction with preferred embodiments, this does not mean that the features of this utility model are limited to this embodiment. On the contrary, the purpose of describing the utility model in conjunction with the embodiments is to cover other options or modifications that may be derived based on the claims of this utility model. To provide a deep understanding of this utility model, many specific details will be included in the following description. This utility model may also be implemented without using these details. Furthermore, to avoid confusion or obscuring the focus of this utility model, some specific details will be omitted in the description. It should be noted that, without conflict, the embodiments and features in the embodiments of this utility model can be combined with each other.

[0031] It should be noted that in this specification, similar reference numerals and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0032] In the description of this embodiment, it should be noted that the terms "upper", "lower", "inner", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the utility model product is usually placed in during use. They are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the utility model.

[0033] The terms “first”, “second”, etc., are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0034] In the description of this embodiment, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set up," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment based on the specific circumstances.

[0035] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0036] (1) Light Emitting Diode Driver

[0037] Also known as an LED driver, it is a circuit module consisting of one or more integrated circuits (ICs) used to provide a stable and appropriate current to an LED.

[0038] (2) Thin-film transistor technology (TFT)

[0039] A display technology for manufacturing liquid crystal display (LCD) panels. The aim is to enable LCD panels to precisely and quickly control the brightness and color of each pixel, thereby displaying high-quality images.

[0040] (3) Local Dimming

[0041] A technology for backlight systems of liquid crystal displays (LCDs). LCD panels themselves do not emit light and require a backlight to illuminate the liquid crystal layer. Traditional backlights cannot adjust brightness, while local dimming technology divides the backlight into several independent areas, each with its own light-emitting diode (LED) and integrated circuit (IC), thereby enabling local dimming of the backlight.

[0042] (4) Timing Controller (TCON)

[0043] It is a key logic control chip inside the LCD panel. It is mainly used to receive processed image data and basic timing control signals from the system board, convert and reassemble the received image data, generate precise timing signals according to the specifications of the LCD panel, and synchronously send the generated precise timing signals to the row driver and column driver. When it is necessary to control the backlight, it will synchronously send signals to the LED driver.

[0044] (5) LED operating voltage (VLED)

[0045] This refers to the DC voltage value that needs to be applied across a light-emitting diode (LED) in order for it to emit light normally.

[0046] refer to Figure 1A , Figure 1A The circuit diagram showing the operation of Thin-Film Transistor (TFT) and Local Dimming technology is shown.

[0047] like Figure 1A As shown, Figure 1A An example is shown with four vertically arranged LED arrays and four integrated circuit ICs, each LED array being controlled by one integrated circuit IC.

[0048] As can be seen, each LED array consists of 16 LEDs evenly arranged in a matrix of 2 columns and 8 rows, and the 16 LEDs are driven by an integrated circuit IC.

[0049] exist Figure 1A In the circuit layout shown, since one integrated circuit IC needs to control multiple LEDs of an LED array (e.g., ...), ... Figure 1A Controlling the switching and brightness of the 16 LEDs shown requires handling large currents and voltages, leading to higher heat generation. Furthermore, the high load on the integrated circuit IC increases the risk of failure and shortens its lifespan. Additionally, it's understandable that one integrated circuit IC controlling the entire LED array means that one IC must simultaneously handle all the LEDs in the array (e.g., ...). Figure 1A The 16 LEDs shown cannot be independently controlled, limiting the granularity and precision of backlight adjustment and resulting in poor adjustment flexibility.

[0050] refer to Figure 1B , Figure 1B The same circuit diagram is shown, employing Thin-Film Transistor (TFT) and Local Dimming technology.

[0051] like Figure 1B As shown, Figure 1B An example is shown with four vertically arranged LED arrays and two integrated circuits (ICs), wherein IC1 controls two LED arrays and IC2 controls the other two LED arrays.

[0052] Furthermore, each LED array includes four LEDs evenly arranged in a matrix of 1 column and 4 rows. Integrated circuit IC1 controls eight LEDs from two LED arrays simultaneously, and integrated circuit IC2 controls eight LEDs from two LED arrays simultaneously.

[0053] exist Figure 1B In the circuit layout shown, since one integrated circuit IC needs to control all the LEDs in two LED arrays (e.g., Figure 1B The switching and brightness control of the 8 LEDs shown also requires handling significant current and voltage, resulting in higher heat generation from either IC1 or IC2, and a higher load on each IC. Furthermore, since IC1 controls all LEDs in two LED arrays, and IC2 controls all LEDs in another two LED arrays, it means that one IC must simultaneously handle all LEDs in both arrays (e.g., ...). Figure 1B The eight LEDs shown cannot be independently controlled, limiting the granularity and precision of backlight adjustment and resulting in poor adjustment flexibility.

[0054] Therefore, to address the high heat generated, the size of the heat dissipation pads in the integrated circuit package is usually increased, or the package size of the integrated circuit chip is increased, or cooling fans are added to equipment such as chassis and LED light boards to indirectly assist in heat dissipation of the integrated circuit IC.

[0055] However, the aforementioned heat dissipation solutions undoubtedly increase the overall cost, both in terms of integrated circuit chip development and application. Furthermore, the issue of integrated circuit ICs being prone to failure under high loads remains to be addressed. Figure 1A and Figure 1BThe layout scheme shown cannot independently control small areas or individual LEDs in the LED array. The flexibility and accuracy of local dimming are low, and it cannot be adapted to applications that require high dynamic range displays (such as in-vehicle central control displays, head-up displays, etc.). The energy efficiency of the integrated circuit chip cannot be maximized.

[0056] To solve the above technical problems, refer to Figure 2A This application provides an in-vehicle display screen 100, which includes: a display panel (not shown in the figure), a circuit board 160, seven first-type LED arrays (hereinafter referred to as "first-type array 110"), and four first-type integrated circuits 120. The circuit board 160 is mounted on the back of the display panel, and the display panel includes a first display area A1.

[0057] As can be seen, the seven first-type arrays 110 and the four first-type integrated circuits 120 are electrically connected to the circuit board 160, and the seven first-type arrays 110 correspond to the aforementioned first display area A1. Each first-type array 110 includes eight light-emitting diodes 130 (LEDs), which are arranged in a straight line.

[0058] like Figure 2A As shown, the load of the first display area A1 is exemplarily distributed among four first-class integrated circuits 120, and each first-class integrated circuit 120 generates less heat. At the same time, each first-class integrated circuit 120 can simultaneously control the independent LEDs in the seven first-class LED arrays, effectively increasing the flexibility and visual effect of regional dimming.

[0059] It should be noted that the embodiments of this application do not impose a specific limit on the number of the first type of integrated circuit 120. For example, the number of the first type of integrated circuit 120 can be configured as 2, 3, 4, 8, 10, 20, etc.

[0060] For example, the first type of integrated circuit 120 includes a first integrated circuit 121, a second integrated circuit 122, a third integrated circuit 123, and a fourth integrated circuit 124, but is not limited thereto. The circuit designs of the first integrated circuit 121, the second integrated circuit 122, the third integrated circuit 123, and the fourth integrated circuit 124 are the same, and are only distinguished for ease of description.

[0061] It should also be noted that the embodiments of this application do not impose specific limitations on the number of the first type array 110. For example, the number of the first type array 110 can be configured as 2, 3, 4, 8, 10, 20, etc.

[0062] Meanwhile, this application embodiment does not impose a specific limitation on the number of light-emitting diodes 130 in the first type array 110. For example, each first type array 110 may include 2, 3, 3, 4, 8, 10, 20, or other numbers of light-emitting diodes 130.

[0063] As can be seen, each of the first type arrays 110 includes: two light-emitting diodes shown in red (hereinafter referred to as "first light-emitting diodes 131"), two light-emitting diodes shown in green (hereinafter referred to as "second light-emitting diodes 132"), two light-emitting diodes shown in blue (hereinafter referred to as "third light-emitting diodes 133"), and two light-emitting diodes shown in yellow (hereinafter referred to as "fourth light-emitting diodes 134").

[0064] Furthermore, such as Figure 2A As shown, the first integrated circuit 121, indicated by the red line, is connected to the negative terminals of two first light-emitting diodes 131 within each first array 110.

[0065] Taking the second integrated circuit 122, shown by the green line, as another example, the second integrated circuit 122 is connected to the negative terminal of two second light-emitting diodes 132 in each of the first arrays 110.

[0066] Taking the third integrated circuit 123 shown by the blue line as an example, the third integrated circuit 123 is connected to the negative terminal of two third light-emitting diodes 133 in each of the first type arrays 110.

[0067] Taking the fourth integrated circuit 124, shown by the yellow line, as another example, this fourth integrated circuit 124 is connected to the negative terminals of two fourth light-emitting diodes 134 within each first type array 110.

[0068] The above is only one possible implementation. The embodiments of this application do not impose specific limitations on the number of light-emitting diodes 130 (such as the first light-emitting diode 131, the second light-emitting diode 132, the third light-emitting diode 133 and the fourth light-emitting diode 134 mentioned above) included in the first array 110. For example, the first light-emitting diode 131 can be configured to be 1, 3, 4, 10, 30 or more; the second light-emitting diode 132 can be configured to be 1, 3, 4, 10, 30 or more; the third light-emitting diode 133 can be configured to be 1, 3, 4, 10, 30 or more; and the fourth light-emitting diode 134 can be configured to be 1, 3, 4, 10, 30 or more.

[0069] Furthermore, the number of the first light-emitting diode 131, the second light-emitting diode 132, the third light-emitting diode 133, and the fourth light-emitting diode 134 can be the same or different, and can be designed and selected according to the actual application scenario.

[0070] In other words, those skilled in the art will understand that each first type integrated circuit 120 can be connected to multiple first type arrays 110 simultaneously, and further, each first type integrated circuit 120 can be connected to the negative terminal of one or more first light-emitting diodes 131 in each first type array 110, and each first type integrated circuit 120 can be connected to the negative terminal of one or more second light-emitting diodes 132 in each first type array 110, and each first type integrated circuit 120 can be connected to the negative terminal of one or more third light-emitting diodes 133 in each first type array 110, and each first type integrated circuit 120 can be connected to the negative terminal of one or more fourth light-emitting diodes 134 in each first type array 110.

[0071] In other words, in this embodiment, each first-type integrated circuit 120 can be connected to an LED within each first-type array 110. Furthermore, it can be understood that each first-type integrated circuit 120 corresponds to at least two first-type arrays 110, and at least one LED in each of the at least two first-type arrays 110 is connected to its corresponding first-type integrated circuit 120. It can also be understood that multiple first-type integrated circuits 120 are connected to multiple first-type arrays 110, but the number of first-type integrated circuits 120 and first-type arrays 110 is not one-to-one. Figure 2A The illustration shows an implementation where four Class I integrated circuits 120 correspond to seven Class I arrays 110.

[0072] Furthermore, those skilled in the art will understand that the positive terminal of each light-emitting diode 130 is connected to a power source (such as the vehicle's battery module 230 as described below), and the negative terminal of each light-emitting diode 130 is connected to a corresponding first-type integrated circuit 120.

[0073] refer to Figure 2B , Figure 2B Another embodiment of the in-vehicle display screen 100 of this application is illustrated by way of example.

[0074] The vehicle display screen 100 in this application embodiment further includes: a second type of LED array (hereinafter referred to as "second type array 140") and a second type of integrated circuit (exemplarily, the second type of integrated circuit includes a fifth integrated circuit 150).

[0075] The display panel also includes a second display area A2. It can be seen that the second array 140 and the fifth integrated circuit 150 are electrically connected to the circuit board 160, and the second array 140 corresponds to the second display area A2. Furthermore, exemplarily, such as... Figure 2B As shown, six first-type arrays 110 are configured, and three first-type integrated circuits 120 are configured. Each first-type array 110 includes eight light-emitting diodes 130 (LEDs).

[0076] In some possible implementations, the area of ​​the first display area A1 is larger than the area of ​​the second display area A2. In some possible implementations, the first display area A1 is located in the central area of ​​the display screen, and the second display area A2 is located in the edge area of ​​the display screen (e.g., located at the edge). Figure 2B (as shown on the right edge).

[0077] As can be seen, each of the six first-type arrays 110 includes: at least one first light-emitting diode 131 (shown by a red line), at least one second light-emitting diode 132 (shown by a green line), and at least one third light-emitting diode 133 (shown by a blue line). The second-type array 140 includes eight seventh light-emitting diodes 137 (shown by yellow lines).

[0078] It should be noted that the embodiments of this application do not impose a specific limit on the number of seventh light-emitting diodes 137 in each second type array 140. The number of seventh light-emitting diodes 137 can be configured as 1, 3, 4, 10, 30 or more.

[0079] It should also be noted that the number of first light-emitting diodes 131 in each first type array 110 may be the same or different. For example, three first type arrays 110 may include three first light-emitting diodes 131, while another three first type arrays 110 may include two first light-emitting diodes 131, but this number is not limited to. The number of second light-emitting diodes 132 or third light-emitting diodes 133 in each first type array 110 is similar.

[0080] Furthermore, such as Figure 2B As shown, the first integrated circuit 121, indicated by the red line, is connected to the negative terminals of two or three first light-emitting diodes 131 within each first array 110. That is, the first integrated circuit 121 is used to control the first light-emitting diodes 131 within the first array 110.

[0081] Taking the second integrated circuit 122 shown by the green line as an example, the second integrated circuit 122 is connected to the negative terminal of the two second light-emitting diodes 132 in each first array 110. That is, the second integrated circuit 122 is used to control the second light-emitting diodes 132 in the first array 110.

[0082] Taking the third integrated circuit 123 shown by the blue line as an example, the third integrated circuit 123 is connected to the negative terminal of the two third light-emitting diodes 133 in each first array 110. That is, the third integrated circuit 123 is used to control the third light-emitting diodes 133 in the first array 110.

[0083] At the same time, Figure 2B In the embodiment shown, the second array 140 includes only the seventh light-emitting diode 137, and the negative terminals of all the seventh light-emitting diodes 137 in the second array 140 are connected only to the fifth integrated circuit 150. At the same time, the fifth integrated circuit 150 is also connected only to the seventh light-emitting diodes 137 in the second array 140.

[0084] In other words, Figure 2B In the embodiments shown, the first type of integrated circuit 120 can be adapted to control one or more light-emitting diodes 130 in the first type of array 110 simultaneously, and the second type of integrated circuit can be configured to control only all light-emitting diodes 130 in a second type of array 140. This application embodiment does not limit this, and the design and selection can be made according to the actual application.

[0085] This application embodiment does not impose a specific limitation on the number of the second type array 140, for example, it can be configured to 1, 2, 3, 10, 20, etc. Similarly, it does not impose a specific limitation on the number of the second type integrated circuits, for example, it can be configured to 1, 2, 3, 10, 20, etc.

[0086] Using the above technical solution, in this embodiment of the application, the vehicle display screen 100 has a first display area A1, which is correspondingly provided with a plurality of first type arrays 110. Each first type array 110 includes at least two light-emitting diodes 130 (LEDs). That is, the first display area A1 can be divided into a plurality of sub-areas, and each sub-area corresponds to one light-emitting diode 130 (LED).

[0087] Based on this, since a single first-type integrated circuit 120 can simultaneously control the independent light-emitting diodes 130 (LEDs) in each first-type array 110, it is equivalent to a single first-type integrated circuit 120 controlling different sub-regions within the first display area A1. When the first display area A1 operates for an extended period, the power consumption is shared by multiple first-type integrated circuit 120 chips (in other words, the first display area A1 is distributed among each first-type integrated circuit 120, resulting in a balanced load on each first-type integrated circuit 120), thereby reducing the heat and temperature rise of the first display area A1 and effectively improving the lifespan of the vehicle display screen 100. Furthermore, there is no need to increase the size of the heat sink pads, the first-type integrated circuit 120 chips, or add cooling fans or other heat dissipation solutions, effectively reducing costs.

[0088] On the other hand, a single first-type integrated circuit 120 can control at least one light-emitting diode 130 (LED) within different first-type arrays 110, that is, it can control different sub-regions of the first display area A1. For example, when a vehicle enters a tunnel, different sub-regions within the first display area A1 (one sub-region corresponds to one light-emitting diode 130 (LED)) can independently execute brightness adjustment commands according to the received brightness control signals, realizing fine-grained dynamic regional backlight adjustment, effectively improving the granularity, accuracy, and flexibility of regional backlight dimming of the vehicle display screen 100, and enhancing the visual effect.

[0089] refer to Figure 3 , Figure 3 Another embodiment of the in-vehicle display screen 100 of this application is illustrated by way of example.

[0090] In some possible implementations, the vehicle-mounted display screen 100 of this application embodiment includes: four first-type arrays 110 and two first-type integrated circuits 120. Each first-type array 110 includes four light-emitting diodes 130 (LEDs) arranged in a straight line.

[0091] In the embodiments of this application, the first type of integrated circuit 120 includes one first integrated circuit 121 and one second integrated circuit 122, but is not limited thereto. The first type of array 110 includes a first array 111, a second array 112, a third array 113, and a fourth array 114.

[0092] For example, the first array 111, the second array 112, the third array 113, and the fourth array 114 are arrays arranged adjacently or at intervals. The four arrays may be the same or different in actual circuit layout. This article will describe the following example with the first array 111, the second array 112, the third array 113, and the fourth array 114 having the same layout.

[0093] As can be seen, the first array 111, the second array 112, the third array 113, and the fourth array 114 each include two fifth light-emitting diodes 135 and two sixth light-emitting diodes 136.

[0094] Furthermore, such as Figure 3 As shown, the first integrated circuit 121 (IC1) on the left is connected to the negative terminals of two sixth light-emitting diodes 136 in the first array 111, the second array 112, the third array 113, and the fourth array 114, respectively. Meanwhile, the second integrated circuit 122 (IC2) on the right is connected to the negative terminals of two fifth light-emitting diodes 135 in the first array 111, the second array 112, the third array 113, and the fourth array 114, respectively.

[0095] In other words, in this embodiment, each first-type integrated circuit 120 can be connected to the negative terminal of at least one LED in each first-type array 110. Furthermore, it can be understood that each first-type integrated circuit 120 corresponds to at least two first-type arrays 110, and the negative terminal of at least one LED in each of the at least two first-type arrays 110 is connected to the corresponding first-type integrated circuit 120. It can also be understood that multiple first-type integrated circuits 120 are connected to multiple first-type arrays 110, but the number of first-type integrated circuits 120 and first-type arrays 110 is not one-to-one. Figure 3 The illustration shows an implementation where two Class I integrated circuits 120 correspond to four Class I arrays 110.

[0096] In addition, the positive terminal of each LED 130 is connected to the power supply, such as... Figure 3 As shown, VLED is the total voltage of multiple first-class arrays 110.

[0097] refer to Figure 4 and combined Figure 3 In some possible implementations, the circuit board 160 of the vehicle display 100 includes a lamp board and a driver board connected together. A first array 110 and a second array 140 are disposed on and electrically connected to the lamp board. An LED driver (referred to as "driver 170") is electrically connected to the driver board. The driver 170 is configured to connect to a first integrated circuit 120 and / or a second integrated circuit for controlling the current of the light-emitting diodes 130 (LEDs) in the first array 110 and / or the second array 140 according to a brightness controller signal.

[0098] For example, the vehicle display screen 100 in this application embodiment is a TFT display screen.

[0099] In some possible implementations, the vehicle display screen 100 of this application embodiment further includes: a timing controller 180, which is electrically connected to the aforementioned driver board and configured to receive a video stream and convert the video stream into a brightness controller signal for controlling the driver 170.

[0100] refer to Figure 4 This application embodiment also provides a vehicle 200 with an in-vehicle display screen 100. The vehicle 200 includes a battery 210 that provides operating voltage to light-emitting diodes 130 (LEDs) in each of the first array 110 and / or the second array 140.

[0101] Although the present invention has been illustrated and described with reference to certain preferred embodiments, those skilled in the art should understand that the above description is a further detailed explanation of the present invention in conjunction with specific embodiments, and should not be construed as limiting the specific implementation of the present invention to these descriptions. Those skilled in the art can make various changes in form and detail, including some simple deductions or substitutions, without departing from the spirit and scope of the present invention.

Claims

1. A vehicle-mounted display screen, characterized in that, include: The display panel includes a first display area; A circuit board is located on the back of the display panel; Multiple first-type LED arrays are electrically connected to the circuit board and correspond to the first display area, each first-type LED array including at least two LEDs; A plurality of first-class integrated circuits are electrically connected to the circuit board, each first-class integrated circuit corresponding to at least two first-class LED arrays, and at least one LED in each first-class LED array of the at least two first-class LED arrays is electrically connected to the corresponding first-class integrated circuit.

2. The vehicle-mounted display screen according to claim 1, characterized in that, Each of the first type integrated circuits corresponds to all of the plurality of first type LED arrays, and at least one LED in each of the plurality of first type LED arrays is electrically connected to the corresponding first type integrated circuit.

3. The vehicle-mounted display screen according to claim 1 or 2, characterized in that, The display panel further includes a second display area, and the vehicle-mounted display screen further includes: At least one second type of LED array is electrically connected to the circuit board and corresponds to the second display area, each second type of LED array including a plurality of LEDs; At least one Class II integrated circuit is electrically connected to the circuit board, wherein, The at least one second-type integrated circuit corresponds one-to-one with the at least one second-type LED array, and all LEDs in each second-type LED array are electrically connected to their corresponding second-type integrated circuit; or, Each of the at least one second-type integrated circuit corresponds to a plurality of second-type LED arrays, and all LEDs in each second-type LED array are electrically connected to the corresponding second-type integrated circuit.

4. The vehicle-mounted display screen according to claim 3, characterized in that, The area of ​​the first display area is larger than the area of ​​the second display area.

5. The vehicle-mounted display screen according to claim 4, characterized in that, The first display area is located in the center of the display screen, and the second display area is located in the edge area of ​​the display screen.

6. The vehicle-mounted display screen according to claim 1, characterized in that, The circuit board includes a lamp board and a driver board connected to each other, the plurality of first-type LED arrays are electrically connected to the lamp board, and the plurality of first-type integrated circuits are electrically connected to the driver board.

7. The vehicle-mounted display screen according to claim 6, characterized in that, Also includes: A timing controller, which is electrically connected to the driver board.

8. A vehicle, characterized in that, Including the vehicle display screen as described in any one of claims 1 to 7.

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