Display driving circuit and display device

Abstract

The utility model discloses a display drive circuit and a display device, and relates to the display technology field, the display drive circuit comprises a main control chip, a connection circuit, an interaction circuit and a function circuit: the connection circuit comprises a TYPE-C connection circuit, an HDMI connection circuit, an eDP connection circuit, and an HDMI-to-TYPE-C connection circuit; the interaction circuit is connected with the main control chip and comprises a receiving circuit and an indicating circuit; the functional circuit is connected with the main control chip, and the functional circuit is used for receiving the operation signal from the interaction circuit and outputting a corresponding functional signal to the main control chip; and the main control chip is also used for receiving the function signal and outputting a corresponding control signal to the display screen through the connecting circuit. The display driving circuit aims to improve the use convenience of the display driving circuit by adding a connecting circuit of the driving circuit and enhancing the interaction between the driving circuit and a user.

Description

Technical Field

[0001] The utility model relates to the technical field of displays, in particular to a display driving circuit and a display device. Background Art

[0002] Display driver circuits are used to connect and synchronize two or more display screens, transmitting information from one display to another for synchronized display. Display driver circuits are widely used in communications equipment, smart homes, consumer electronics, and computer room monitoring. However, existing display driver circuits have limited connectors and functionality, resulting in poor user convenience. Utility Model Content

[0003] The main purpose of the present invention is to provide a display driving circuit and a display device, aiming to improve the convenience of use of the display driving circuit.

[0004] To achieve the above-mentioned purpose, the display driving circuit proposed by the present invention includes:

[0005] Main control chip;

[0006] a connecting circuit, the connecting circuit being connected to the main control chip and further connected to at least two display screens, the connecting circuit being configured to input a first signal output by a first display screen into the main control chip, the main control chip being configured to receive the first signal and output a corresponding second signal to a second display screen via the connecting circuit;

[0007] The connection circuit includes a TYPE-C connection circuit, an HDMI connection circuit, an eDP connection circuit, and an HDMI to TYPE-C connection circuit;

[0008] An interactive circuit, connected to the main control chip, configured to obtain an operation signal from a user and input the operation signal to the main control chip. The main control chip is further configured to receive the operation signal and output a corresponding feedback signal through the interactive circuit;

[0009] The interactive circuit includes a receiving circuit and an indicating circuit;

[0010] A functional circuit is connected to the main control chip, and is used to receive an operation signal from the interactive circuit and output a corresponding functional signal to the main control chip; the main control chip is also used to receive the functional signal and output a corresponding control signal to the display screen through the connecting circuit.

[0011] Optionally, the functional circuit includes a backlight circuit.

[0012] Optionally, the backlight circuit includes a backlight interface circuit and a SY7301AADC chip;

[0013] The VIN pin of the SY7301A ADC chip is connected to one end of the capacitor C78, ​​the resistor R90, and the inductor L7. The other end of the capacitor C78 is grounded. The other end of the resistor R90 is connected to the power supply. The other end of the inductor L7 is connected to the SW pin of the SY7301A ADC chip and the anode of the diode D14. The cathode of the diode D14 is connected to one end of the capacitor C8, the capacitor C21, and the inductor L8. The other ends of the capacitors C8 and C21 are grounded. The other end of the inductor L8 is connected to one end of the capacitor C83. The other end of the inductor L8 is connected to the first pin and the second pin of the backlight interface circuit through the VLED+ interface. The other end of the capacitor C83 is grounded.

[0014] The OVP pin of the SY7301AADC chip is connected to one end of the resistor R62, and the other end of the resistor R62 is connected to the first pin and the second pin of the backlight interface circuit;

[0015] The EN pin of the SY7301AADC chip is connected to one end of the resistor R44, the resistor R34 and the capacitor C6, and is connected to the collector of the transistor Q9. The other ends of the resistor R44, the capacitor C6 and the emitter of the transistor Q9 are connected to one end of the resistor R70 and the resistor R69. The other ends of the resistor R70 and the resistor R69 are connected to one end of the resistor R66, and the other end of the resistor R69 is connected to the fifth pin and the sixth pin of the backlight interface circuit through the VLED- interface. The other end of the resistor R66 is connected to the FB pin of the SY7301AADC chip. The base of the transistor Q9 is connected to the main control chip through the ONBACKLITE interface. The other end of the resistor R34 is connected to the main control chip through the ADJBACKLITE interface.

[0016] Optionally, the TYPE-C connection circuit includes a TYPE-C female chip, the main control chip has at least one first TYPE-C signal transceiver, and the TYPE-C female chip has at least one second TYPE-C signal transceiver;

[0017] The first TYPE-C signal transceiver includes a first RX interface and a first TX interface; the second TYPE-C signal transceiver includes a second RX interface and a second TX interface; the first RX interface is used to connect to the second RX interface, and the first TX interface is used to connect to the second TX interface.

[0018] Optionally, the HDMI connection circuit includes an HDMI female chip, the main control chip has at least one first HDMI interface, and the HDMI female chip has at least one second HDMI interface;

[0019] The first HDMI interface includes a first HDMI+ interface and a first HDMI- interface; the second HDMI interface includes a second HDMI+ interface and a second HDMI- interface; the first HDMI+ interface is used to connect to the second HDMI+ interface, and the first HDMI- interface is used to connect to the second HDMI- interface.

[0020] Optionally, the eDP connection circuit includes an FPC30P interface chip, and the eDP connection circuit further includes a low-level activation circuit, and a PANEL_ON port of the low-level activation circuit is connected to the PANEL_ON end of the main control chip.

[0021] Optionally, the HDMI to TYPE-C connection circuit includes an MSUS30 chip.

[0022] Optionally, the receiving circuit includes a key circuit, and the key circuit includes a switch button and a volume button; and / or,

[0023] The indicating circuit includes an LED lamp circuit.

[0024] Optionally, the display driving circuit further includes a low-level protection circuit connected to the main control chip.

[0025] A display device, optionally, the display device includes the display driving circuit as described in any one of the above items.

[0026] The present utility model proposes a display driver circuit, which aims to improve the ease of use of the display driver circuit. Specifically, the connection circuit of the display driver circuit supports multiple interface types, including TYPE-C, HDMI, eDP, and conversion from HDMI to TYPE-C, and can be flexibly compatible with various types of display devices. The interactive circuit includes a receiving circuit and an indication circuit, which allows the user to control the working mode and parameter settings of the display driver circuit through simple operations through the main control circuit. The functional circuit can perform specific functions according to the operation signal received by the interactive circuit, such as adjusting the brightness, changing the resolution, etc., further enhancing the functionality and ease of use of the display driver circuit. In this way, the connection ports of the display driver circuit are increased, and the functional interactivity is enhanced, thereby improving the convenience of the display driver circuit. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0028] Figure 1 A circuit diagram of an embodiment of a display driving circuit provided by the present utility model;

[0029] Figure 2 for Figure 1 A partial enlarged view of point A in the middle;

[0030] Figure 3 for Figure 1 A partial enlarged view of point D in the middle;

[0031] Figure 4 for Figure 1 A partial enlarged view of point B in the middle;

[0032] Figure 5 for Figure 1 A partial enlarged view of point C in the middle;

[0033] Figure 6 A circuit diagram of an embodiment of a backlight circuit provided by the present utility model;

[0034] Figure 7 A circuit diagram of an embodiment of a TYPE-C connection circuit provided by the present utility model;

[0035] Figure 8 A circuit diagram of an embodiment of an HDMI connection circuit provided by the present invention;

[0036] Figure 9 A circuit diagram of an embodiment of an eDP connection circuit provided by the present invention;

[0037] Figure 10 This is a circuit diagram of an embodiment of the HDMI to TYPE-C connection circuit provided by the present invention;

[0038] Figure 11 A circuit diagram of an embodiment of a receiving circuit provided by the present utility model;

[0039] Figure 12 A circuit diagram of an embodiment of an indicator circuit provided by the present utility model;

[0040] Figure 13 This is a circuit diagram of an embodiment of a low-level protection circuit provided by the utility model.

[0041] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0043] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), such directional indications are only used to explain the relative position relationship, movement status, etc. between the various components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0044] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of such features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme in which A and B are satisfied at the same time. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0045] Display driver circuits are used to connect and synchronize two or more display screens, transmitting information from one display to another for synchronized display. Display driver circuits are widely used in communications equipment, smart homes, consumer electronics, and computer room monitoring. However, existing display driver circuits have limited connectors and functionality, resulting in poor user convenience.

[0046] Specifically, existing display driver circuits are inconvenient to use, typically supporting only one or a few interface standards (such as HDMI or VGA). This requires additional adapters or converters when connecting different display devices, increasing complexity. Furthermore, these circuits are limited in functionality, often only able to perform basic signal transmission tasks and lacking advanced features such as resolution adjustment, color management, and synchronization control. This limits their applicability in high-end applications.

[0047] The main purpose of the present invention is to provide a display driving circuit and a display device, aiming to improve the convenience of use of the display driving circuit.

[0048] In this embodiment, in order to achieve the above purpose, Figure 1-Figure 5 As shown, the display driver circuit includes a main control chip that processes and coordinates data transmission between various components, ensuring that display information can be accurately transmitted from one display screen to another. This can effectively improve the stability and response speed of the display driver circuit.

[0049] In this embodiment, if Figure 7-10 As shown, the display driving circuit also includes a connecting circuit, which is connected to the main control chip. The connecting circuit is also connected to at least two display screens. The connecting circuit is used to input a first signal output by a first display screen into the main control chip. The main control chip is used to receive the first signal and output a corresponding second signal to the second display screen through the connecting circuit. In this way, seamless synchronous display between different display screens can be achieved, which greatly improves the user experience and the practicality of the display driving circuit.

[0050] It can be understood that the connection circuit may include one or more of a TYPE-C connection circuit, an HDMI connection circuit, an eDP connection circuit, and an HDMI to TYPE-C connection circuit. The above are all commonly used connection ports. The display driving circuit can adapt to most display screen devices through the above interfaces, thus having high ease of use.

[0051] In this embodiment, if Figure 11-12 As shown, the display driver circuit also includes an interactive circuit, which is connected to the main control chip. The interactive circuit is used to obtain user operation signals and input the operation signals to the main control chip. The main control chip is also used to receive the operation signals and output corresponding feedback signals through the interactive circuit. The interactive circuit includes a receiving circuit and an indication circuit. In this way, users can control the operating status of the display driver circuit through simple operations and receive functional feedback signals, improving the convenience and intuitiveness of operation.

[0052] In this embodiment, if Figure 6 As shown, the display driver circuit also includes a functional circuit connected to the main control chip. The functional circuit is configured to receive operation signals from the interactive circuit and output corresponding functional signals to the main control chip. The main control chip is further configured to receive the functional signals and output corresponding control signals to the display screen via the connecting circuit. This allows users to easily adjust the display settings of the target display, such as resolution and color depth, further enhancing the versatility and ease of use of the display driver circuit.

[0053] It is understandable that the specific function of the functional circuit is not limited here, and it can be a backlight circuit or other circuits.

[0054] In practical applications, this system aims to achieve synchronized display between the primary screen (first display) and the secondary screen (second display). First, the two displays are interconnected via a connecting circuit. The main control chip continuously receives display signals from the first display and generates corresponding signals to transmit to the second display, thereby achieving synchronized display of the first display's content on the second display. The system also integrates interactive circuits and functional circuits. Users can input commands through the interactive circuit. These commands are received by the main control chip, which further controls the functional circuits to perform corresponding operations, ensuring that the displayed content is adjusted according to the user's preferences. This not only achieves synchronized display between the two screens, but also allows users to customize the display effects as needed.

[0055] In summary, the present invention proposes a display driver circuit, which aims to improve the ease of use of the display driver circuit. Specifically, the connection circuit of the display driver circuit supports multiple interface types, including TYPE-C, HDMI, eDP, and conversion from HDMI to TYPE-C, and can be flexibly compatible with various types of display devices. The interactive circuit includes a receiving circuit and an indication circuit, which allows the user to control the working mode and parameter settings of the display driver circuit through simple operations through the main control circuit. The functional circuit can perform specific functions according to the operation signal received by the interactive circuit, such as adjusting the brightness, changing the resolution, etc., further enhancing the functionality and ease of use of the display driver circuit. In this way, the connection ports of the display driver circuit are increased, and the functional interactivity is enhanced, thereby improving the convenience of the display driver circuit.

[0056] In one embodiment, the functional circuit includes a backlight circuit. It will be appreciated that the backlight circuit primarily provides light for non-luminous display screens such as LCDs (Liquid Crystal Displays). For LCDs, the backlight determines the overall brightness and visibility of the screen. The backlight circuit typically consists of LED light strips located behind the display screen, illuminating the entire display screen with evenly distributed light.

[0057] In this specific embodiment, the backlight circuit, as part of the functional circuitry, is primarily responsible for controlling the brightness of the secondary display. When the main control circuit receives user instructions via the interactive circuit, it may adjust the backlight circuit's output to change the display's brightness. For example, if the user wishes to lower the display's brightness to save power, the main control circuit will send a corresponding signal to the backlight circuit, reducing the brightness of the LED light strip. This allows users to adjust the display's brightness based on their environment and personal preferences.

[0058] In this embodiment, if Figure 6 As shown, the backlight circuit includes a backlight interface circuit and a SY7301AADC chip; the VIN pin of the SY7301AADC chip is connected to one end of the capacitor C78, ​​the resistor R90 and the inductor L7, the other end of the capacitor C78 is grounded, the other end of the resistor R90 is connected to the power supply, the other end of the inductor L7 is connected to the SW pin of the SY7301AADC chip and the anode of the diode D14, the cathode of the diode D14 is connected to the capacitor C8, the capacitor C21 and one end of the inductor L8, the other ends of the capacitor C8 and the capacitor C21 are grounded, the other end of the inductor L8 is connected to one end of the capacitor C83, and the other end of the inductor L8 is connected to the first pin and the second pin of the backlight interface circuit through the VLED+ interface, and the other end of the capacitor C83 is grounded; the OVP pin of the SY7301AADC chip is connected to one end of the resistor R62 end, the other end of the resistor R62 is connected to the first pin and the second pin of the backlight interface circuit; the EN pin of the SY7301AADC chip is connected to the resistor R44, the resistor R34 and one end of the capacitor C6, and is connected to the collector of the transistor Q9, the other end of the resistor R44, the capacitor C6 and the emitter of the transistor Q9 are connected to the resistor R70 and one end of the resistor R69, the other ends of the resistor R70 and the resistor R69 are connected to one end of the resistor R66, and the other end of the resistor R69 is connected to the fifth pin and the sixth pin of the backlight interface circuit through the VLED- interface, the other end of the resistor R66 is connected to the FB pin of the SY7301AADC chip, the base of the transistor Q9 is connected to the main control chip through the ONBACKLITE interface, and the other end of the resistor R34 is connected to the main control chip through the ADJBACKLITE interface.

[0059] In one embodiment, if Figure 7As shown, the TYPE-C connection circuit includes a TYPE-C female chip, the main control chip has at least one first TYPE-C signal transceiver unit, and the TYPE-C female chip has at least one second TYPE-C signal transceiver unit; the first TYPE-C signal transceiver unit includes a first RX interface and a first TX interface; the second TYPE-C signal transceiver unit includes a second RX interface and a second TX interface; the first RX interface is used to connect to the second RX interface, and the first TX interface is used to connect to the second TX interface.

[0060] It is understood that in actual connection, the first RX interface is connected to the second RX interface for receiving data signals from the second TYPE-C signal transceiver; while the first TX interface is connected to the second TX interface for sending data signals to the second TYPE-C signal transceiver. This design ensures that data can be transmitted bidirectionally between the main control chip and the Type-C interface, thereby supporting the transmission of video signals, audio signals, and other data.

[0061] In this embodiment, the RX interface is a signal receiving interface, and the TX interface is a signal output interface.

[0062] In one embodiment, if Figure 8 As shown, the HDMI connection circuit includes an HDMI female chip, the main control chip has at least one first HDMI interface, and the HDMI female chip has at least one second HDMI interface; the first HDMI interface includes a first HDMI+ interface and a first HDMI-interface; the second HDMI interface includes a second HDMI+ interface and a second HDMI-interface; the first HDMI+ interface is used to connect to the second HDMI+ interface, and the first HDMI-interface is used to connect to the second HDMI-interface.

[0063] It is understandable that, during actual connection, the first HDMI+ interface is connected to the second HDMI+ interface, used to send the positive end of the differential signal; while the first HDMI- interface is connected to the second HDMI- interface, used to send the negative end of the differential signal. This design ensures that data can be transmitted bidirectionally between the main control chip and the HDMI interface, thereby supporting the transmission requirements of video signals, audio signals, and other data. In this way, data can be transmitted from the main control chip to the HDMI female chip, and then connected to an external display or other HDMI device.

[0064] In one embodiment, if Figure 9As shown, the eDP connection circuit includes an FPC30P interface chip, and the eDP connection circuit also includes a low-level activation circuit, and the PANEL_ON port of the low-level activation circuit is connected to the PANEL_ON end of the main control chip.

[0065] In one embodiment, if Figure 10 The HDMI to TYPE-C connection circuit shown includes an MSUS30 chip. It can be understood that this chip is responsible for converting the video and audio signals received from the HDMI interface into standard DisplayPort Alt Mode signals suitable for the Type-C interface. Specifically, this process may include decoding, re-encoding, and format conversion of the original HDMI signal. In this way, even devices that originally only support the HDMI interface can be converted to the Type-C interface through the MSUS30 chip, providing more connection options and improving the ease and flexibility of use of the display driver circuit.

[0066] In one embodiment, if Figure 11 and 12 As shown, the receiving circuit includes a key circuit, and the key circuit includes a switch button and a volume button; the indicating circuit includes an LED light circuit.

[0067] In this embodiment, if Figure 11 As shown, the key circuit includes an on / off button and a volume button. The on / off button is used to control the system's power on and off, while the volume button is used to adjust the volume. These buttons receive user input signals through an interface connected to the main control chip and forward these signals to the main control chip for processing.

[0068] In this embodiment, if Figure 12 As shown, the LED light circuit in the indicator circuit is used to provide visual feedback to the user, such as system status indication, operation confirmation, etc. The color and flashing pattern of the LED light can be programmed to indicate different states or confirm user operations.

[0069] In this way, users can control the functions of the display driver circuit through simple button operations and understand the current status of the system through the indication of the LED light, thereby improving the user's operating convenience and experience.

[0070] In one embodiment, if Figure 13 As shown, the display driving circuit further includes a low-level protection circuit connected to the main control chip.

[0071] The present invention further provides a display device, which includes the display driving circuit described above.

[0072] It should be noted that the specific structure of the display driving circuit refers to the above embodiments. Since the display device adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be described one by one here.

[0073] The above description is merely an exemplary embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made using the contents of the present invention specification and drawings under the technical concept of the present invention, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A display driving circuit, characterized in that: The display driving circuit includes: Main control chip; a connecting circuit, the connecting circuit being connected to the main control chip and further connected to at least two display screens, the connecting circuit being configured to input a first signal output by a first display screen into the main control chip, the main control chip being configured to receive the first signal and output a corresponding second signal to a second display screen via the connecting circuit; The connection circuit includes a TYPE-C connection circuit, an HDMI connection circuit, an eDP connection circuit, and an HDMI to TYPE-C connection circuit; An interactive circuit, connected to the main control chip, configured to obtain an operation signal from a user and input the operation signal to the main control chip. The main control chip is further configured to receive the operation signal and output a corresponding feedback signal through the interactive circuit; The interactive circuit includes a receiving circuit and an indicating circuit; A functional circuit is connected to the main control chip, and is used to receive an operation signal from the interactive circuit and output a corresponding functional signal to the main control chip; the main control chip is also used to receive the functional signal and output a corresponding control signal to the display screen through the connecting circuit.

2. The display driving circuit according to claim 1, wherein: The functional circuit includes a backlight circuit.

3. The display driving circuit according to claim 2, wherein: The backlight circuit includes a backlight interface circuit and a SY7301AADC chip; The VIN pin of the SY7301A ADC chip is connected to one end of the capacitor C78, ​​the resistor R90, and the inductor L7. The other end of the capacitor C78 is grounded. The other end of the resistor R90 is connected to the power supply. The other end of the inductor L7 is connected to the SW pin of the SY7301A ADC chip and the anode of the diode D14. The cathode of the diode D14 is connected to one end of the capacitor C8, the capacitor C21, and the inductor L8. The other ends of the capacitors C8 and C21 are grounded. The other end of the inductor L8 is connected to one end of the capacitor C83. The other end of the inductor L8 is connected to the first pin and the second pin of the backlight interface circuit through the VLED+ interface. The other end of the capacitor C83 is grounded. The OVP pin of the SY7301AADC chip is connected to one end of the resistor R62, and the other end of the resistor R62 is connected to the first pin and the second pin of the backlight interface circuit; The EN pin of the SY7301AADC chip is connected to one end of the resistor R44, the resistor R34 and the capacitor C6, and is connected to the collector of the transistor Q9. The other ends of the resistor R44, the capacitor C6 and the emitter of the transistor Q9 are connected to one end of the resistor R70 and the resistor R69. The other ends of the resistor R70 and the resistor R69 are connected to one end of the resistor R66, and the other end of the resistor R69 is connected to the fifth pin and the sixth pin of the backlight interface circuit through the VLED- interface. The other end of the resistor R66 is connected to the FB pin of the SY7301AADC chip. The base of the transistor Q9 is connected to the main control chip through the ONBACKLITE interface. The other end of the resistor R34 is connected to the main control chip through the ADJBACKLITE interface.

4. The display driving circuit according to claim 1, wherein: The TYPE-C connection circuit includes a TYPE-C female chip, the main control chip has at least one first TYPE-C signal transceiver, and the TYPE-C female chip has at least one second TYPE-C signal transceiver; The first TYPE-C signal transceiver includes a first RX interface and a first TX interface; the second TYPE-C signal transceiver includes a second RX interface and a second TX interface; the first RX interface is used to connect to the second RX interface, and the first TX interface is used to connect to the second TX interface.

5. The display driving circuit according to claim 4, wherein: The HDMI connection circuit includes an HDMI female chip, the main control chip has at least one first HDMI interface, and the HDMI female chip has at least one second HDMI interface; The first HDMI interface includes a first HDMI+ interface and a first HDMI- interface; the second HDMI interface includes a second HDMI+ interface and a second HDMI- interface; the first HDMI+ interface is used to connect to the second HDMI+ interface, and the first HDMI- interface is used to connect to the second HDMI- interface.

6. The display driving circuit according to claim 1, wherein: The eDP connection circuit includes an FPC30P interface chip, and the eDP connection circuit also includes a low-level activation circuit, and a PANEL_ON port of the low-level activation circuit is connected to the PANEL_ON end of the main control chip.

7. The display driving circuit according to claim 1, wherein: The HDMI to TYPE-C connection circuit includes an MSUS30 chip.

8. The display driving circuit according to claim 1, wherein: The receiving circuit includes a key circuit, and the key circuit includes a switch button and a volume button; and / or, The indicating circuit includes an LED lamp circuit.

9. The display driving circuit according to claim 1, wherein: The display driving circuit further includes a low-level protection circuit connected to the main control chip.

10. A display device, characterized in that: The display device comprises the display driving circuit according to any one of claims 1 to 9.

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