Display control circuit and display equipment

Abstract

The utility model relates to the technical field of display equipment, and discloses a display control circuit and display equipment, and the display control circuit comprises a display driving circuit, a Type-C transmission control circuit, an HDMI transmission control circuit and a video signal output circuit. The accessed Type-C signal source is used for supplying power to the display driving circuit and / or transmitting a Type-C input signal; an HDMI input signal is transmitted to the display driving circuit through the HDMI transmission control circuit; a video output signal is transmitted to a video signal output circuit through a display driving circuit according to a received input signal; and projecting the video output signal to a display screen through a video signal output circuit. According to the utility model, various input signals can be received through the Type-C interface and the HDMI interface, and video output signals can be efficiently projected to the display screen, so that diversified display requirements can be met, and diversified equipment can be compatible, and more convenient and diversified display functions can be provided for users.

Description

Technical Field

[0001] This utility model relates to the field of display device technology, and in particular to a display control circuit and a display device. Background Technology

[0002] Currently, most display devices on the market are only suitable for low-resolution display applications such as office and study environments, and cannot meet users' needs for high refresh rate resolution or diverse resolutions. Furthermore, most display devices on the market do not support a wide range of voltage inputs, resulting in limited compatibility with certain devices and hindering their widespread application.

[0003] Therefore, it is particularly important to propose a technical solution that can meet diverse display needs and be compatible with diverse input / output devices. Utility Model Content

[0004] This invention provides a display control circuit and display device that can meet diverse display needs and is compatible with diverse input / output devices.

[0005] To address the aforementioned technical problems, the first aspect of this utility model discloses a display control circuit, which includes a display driver circuit, a Type-C transmission control circuit, an HDMI transmission control circuit, and a video signal output circuit, wherein:

[0006] The Type-C input terminal of the display driver circuit is electrically connected to the output terminal of the Type-C transmission control circuit; the HDMI input terminal of the display driver circuit is electrically connected to the output terminal of the HDMI transmission control circuit; the video signal output terminal of the display driver circuit is electrically connected to the video signal input terminal of the video signal output circuit; and the power supply terminal of the display driver circuit is electrically connected to the power supply terminal of the Type-C transmission control circuit.

[0007] The signal source input terminal of the Type-C transmission control circuit is used to electrically connect to a Type-C signal source; the signal source input terminal of the HDMI transmission control circuit is used to electrically connect to an HDMI signal source; the output terminal of the video signal output circuit is used to electrically connect to a display screen.

[0008] The Type-C transmission control circuit is used to supply power to the display driver circuit and / or transmit Type-C input signals to the display driver circuit based on the connected Type-C signal source;

[0009] The HDMI transmission control circuit is used to transmit HDMI input signals to the display driver circuit;

[0010] The display driver circuit is used to transmit a video output signal to the video signal output circuit according to the received input signal; the input signal includes the Type-C input signal and / or the HDMI input signal;

[0011] The video signal output circuit is used to project the video output signal onto the display screen.

[0012] As an optional implementation, in the first aspect of this utility model, the Type-C signal source includes a first Type-C signal source and / or a second Type-C signal source; the Type-C transmission control circuit includes a first Type-C interface circuit, a second Type-C interface circuit, and a voltage selection circuit, wherein:

[0013] The video signal terminal of the first Type-C interface circuit is electrically connected to the first Type-C input terminal of the display driver circuit; the power supply terminal of the first Type-C interface circuit is electrically connected to the first power supply terminal of the voltage selection circuit; the signal source input terminal of the first Type-C interface circuit is used to electrically connect to the first Type-C signal source.

[0014] The video signal terminal of the second Type-C interface circuit is electrically connected to the second Type-C input terminal of the display driver circuit; the power supply terminal of the second Type-C interface circuit is electrically connected to the second power supply terminal of the voltage selection circuit; the signal source input terminal of the second Type-C interface circuit is used to electrically connect to the second Type-C signal source; the power supply terminal of the display driver circuit is electrically connected to the third power supply terminal of the voltage selection circuit.

[0015] The first Type-C interface circuit is used to transmit a first Type-C input signal to the display driver circuit;

[0016] The second Type-C interface circuit is used to transmit a second Type-C input signal to the display driver circuit;

[0017] The voltage selection circuit is used to supply power to the display driving circuit based on the determined target Type-C signal source; the target Type-C signal source is the Type-C signal source connected to the Type-C transmission control circuit.

[0018] As an optional implementation, in the first aspect of this utility model, the Type-C transmission control circuit further includes a USB signal processing circuit, wherein:

[0019] The first USB data terminal of the USB signal processing circuit is electrically connected to the USB data terminal of the first Type-C interface circuit, and the second USB data terminal of the USB signal processing circuit is electrically connected to the USB data terminal of the second Type-C interface circuit; the first connection identification terminal of the USB signal processing circuit is electrically connected to the connection identification terminal of the first Type-C interface circuit, and the second connection identification terminal of the USB signal processing circuit is electrically connected to the connection identification terminal of the second Type-C interface circuit.

[0020] The USB signal processing circuit is used to automatically adapt to the target Type-C signal source; and to perform a signal format conversion operation on the USB data transmission signal corresponding to the target Type-C signal source, so as to transmit the data transmission signal in the target format.

[0021] As an optional implementation, in the first aspect of this utility model, the display control circuit further includes a voltage conversion circuit, wherein:

[0022] The first power supply terminal of the voltage conversion circuit is electrically connected to the first power supply terminal of the Type-C transmission control circuit; the second power supply terminal of the voltage conversion circuit is electrically connected to the second power supply terminal of the Type-C transmission control circuit and the first power supply terminal of the video signal output circuit; the third power supply terminal of the voltage conversion circuit is electrically connected to the power supply terminal of the display driving circuit.

[0023] The voltage conversion circuit is used to convert the power supply voltage provided by the Type-C transmission control circuit into the target power supply voltage.

[0024] As an optional implementation, in the first aspect of this utility model, the voltage conversion circuit includes a first-stage voltage conversion circuit and a second-stage voltage conversion circuit, wherein:

[0025] The voltage input terminal of the first-stage voltage conversion circuit is electrically connected to the first power supply terminal of the Type-C transmission control circuit, and the voltage output terminal of the first-stage voltage conversion circuit is electrically connected to the voltage input terminal of the second-stage voltage conversion circuit, the second power supply terminal of the Type-C transmission control circuit, and the first power supply terminal of the video signal output circuit, respectively.

[0026] The voltage output terminal of the secondary voltage conversion circuit is electrically connected to the power supply terminal of the display driver circuit.

[0027] The first-stage voltage conversion circuit is used to convert the power supply voltage into a first-stage power supply voltage;

[0028] The secondary voltage conversion circuit is used to convert the primary power supply voltage into a secondary power supply voltage; wherein, the target power supply voltage includes the primary power supply voltage and the secondary power supply voltage.

[0029] As an optional implementation, in the first aspect of this utility model, the secondary voltage conversion circuit includes a first step-down circuit, a second step-down circuit, a third step-down circuit, and a fourth step-down circuit, wherein:

[0030] The voltage input terminals of the first step-down circuit, the second step-down circuit, the third step-down circuit, and the fourth step-down circuit are respectively electrically connected to the voltage output terminal of the first-stage voltage conversion circuit.

[0031] The voltage output terminal of the first step-down circuit is electrically connected to the first power supply terminal of the display driver circuit, the voltage output terminal of the second step-down circuit is electrically connected to the second power supply terminal of the display driver circuit, the voltage output terminal of the third step-down circuit is electrically connected to the third power supply terminal of the display driver circuit, and the voltage output terminal of the fourth step-down circuit is electrically connected to the fourth power supply terminal of the display driver circuit.

[0032] The secondary power supply voltage includes the first power supply voltage corresponding to the first step-down circuit, the second power supply voltage corresponding to the second step-down circuit, the third power supply voltage corresponding to the third step-down circuit, and the fourth power supply voltage corresponding to the fourth step-down circuit.

[0033] As an optional implementation, in the first aspect of this utility model, the video signal output circuit includes a boost circuit, a conduction control circuit, and an IPX interface circuit, wherein:

[0034] The voltage input terminal of the boost circuit is used to electrically connect to the first system power supply voltage, and the voltage output terminal of the boost circuit is electrically connected to the first terminal of the IPX interface circuit.

[0035] The first terminal of the conduction control circuit is used to electrically connect to the second system power supply voltage, the second terminal of the conduction control circuit is electrically connected to the front panel control terminal of the display driver circuit, and the third terminal of the conduction control circuit is electrically connected to the second terminal of the IPX interface circuit.

[0036] The third terminal of the IPX interface circuit is electrically connected to the video signal output terminal of the display driver circuit; the output terminal of the video signal output circuit is used to electrically connect to the display screen.

[0037] The boost circuit is used to convert the first system power supply voltage into a fifth power supply voltage and provide the fifth power supply voltage to the IPX interface circuit;

[0038] The conduction control circuit is used to provide the second system power supply voltage to the IPX interface circuit when the received activation control signal is a preset control signal;

[0039] The IPX interface circuit is used to project the video output signal onto the display screen.

[0040] As an optional implementation, in the first aspect of this utility model, the display control circuit further includes a button control circuit, wherein:

[0041] The I / O terminal of the button control circuit is electrically connected to the I / O terminal of the display driver circuit.

[0042] The button control circuit is used to output button control signals to the display driving circuit; the button control signals are used to control the display driving circuit.

[0043] As an optional implementation, in the first aspect of this utility model, the display control circuit further includes an audio signal output circuit, wherein:

[0044] The audio receiving end of the audio signal output circuit is electrically connected to the audio transmission end of the display driving circuit, and the audio output end of the audio signal output circuit is used to electrically connect to an audio playback device.

[0045] The display driving circuit is also used to transmit audio output signals to the audio signal output circuit;

[0046] The audio signal output circuit is used to drive the audio playback device to play audio based on the audio output signal.

[0047] The second aspect of this utility model discloses a display device, which includes a device body and a display control circuit as disclosed in any of the first aspects.

[0048] Compared with the prior art, the present invention has the following beneficial effects:

[0049] As can be seen, by providing an easily implemented circuit, this utility model can supply power to the display driver circuit and / or transmit Type-C input signals via a Type-C transmission control circuit using the connected Type-C signal source. Alternatively, it can transmit HDMI input signals to the display driver circuit via an HDMI transmission control circuit. The display driver circuit then transmits video output signals to the video signal output circuit based on the received input signals, and the video output signal is projected onto the display screen via the video signal output circuit. This allows the system to receive various types of input signals through both Type-C and HDMI interfaces and efficiently project video output signals onto the display screen. This satisfies diverse display needs of users and is compatible with various input / output devices, providing users with more convenient and diverse display functions, which is beneficial for building portable display devices. Attached Figure Description

[0050] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0051] Figure 1 This is a schematic diagram of the structure of a display control circuit disclosed in an embodiment of this utility model;

[0052] Figure 2 This is a schematic diagram of another display control circuit disclosed in an embodiment of the present utility model;

[0053] Figure 3 This is a schematic diagram of another display control circuit disclosed in an embodiment of the present utility model;

[0054] Figure 4 This is a schematic diagram of the structure of a display driver chip disclosed in an embodiment of this utility model;

[0055] Figure 5 This is a schematic diagram of the structure of a flash memory circuit disclosed in an embodiment of the present invention;

[0056] Figure 6 This is a schematic diagram of the structure of a clock circuit and a reset circuit disclosed in an embodiment of this utility model;

[0057] Figure 7 This is a schematic diagram of the structure of a first Type-C interface circuit disclosed in an embodiment of the present utility model;

[0058] Figure 8 This is a schematic diagram of the structure of a second Type-C interface circuit disclosed in an embodiment of the present invention;

[0059] Figure 9 This is a schematic diagram of the structure of a voltage selection circuit disclosed in an embodiment of this utility model;

[0060] Figure 10 This is a schematic diagram of the structure of a dual-interface control circuit disclosed in an embodiment of this utility model;

[0061] Figure 11 This is a schematic diagram of the structure of a signal conversion circuit disclosed in an embodiment of this utility model;

[0062] Figure 12 This is a schematic diagram of the structure of a USB signal output selection circuit disclosed in an embodiment of this utility model;

[0063] Figure 13 This is a schematic diagram of the structure of an HDMI transmission control circuit disclosed in an embodiment of this utility model;

[0064] Figure 14 This is a schematic diagram of the structure of a first-stage voltage conversion circuit disclosed in an embodiment of this utility model;

[0065] Figure 15 This is a schematic diagram of the structure of a first step-down circuit disclosed in an embodiment of this utility model;

[0066] Figure 16 This is a schematic diagram of the structure of a second step-down circuit disclosed in an embodiment of this utility model;

[0067] Figure 17 This is a schematic diagram of the structure of a third step-down circuit disclosed in an embodiment of this utility model;

[0068] Figure 18 This is a schematic diagram of the structure of a fourth step-down circuit disclosed in an embodiment of this utility model;

[0069] Figure 19 This is a schematic diagram of a boost circuit and a conduction control circuit disclosed in an embodiment of the present utility model;

[0070] Figure 20 This is a schematic diagram of the structure of an IPX interface circuit disclosed in an embodiment of this utility model;

[0071] Figure 21 This is a schematic diagram of the structure of a button control circuit disclosed in an embodiment of this utility model;

[0072] Figure 22 This is a schematic diagram of the structure of an audio signal output circuit disclosed in an embodiment of the present utility model;

[0073] Figure 23This is a schematic diagram of another display control circuit disclosed in an embodiment of the present utility model;

[0074] Figure 24 This is a schematic diagram of the structure of a display device disclosed in an embodiment of this utility model. Detailed Implementation

[0075] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0076] It should be noted that, unless otherwise expressly specified and limited, the term "electrical connection" in the specification, claims, and accompanying drawings of this utility model should be interpreted broadly. For example, it can be a fixed electrical connection, a detachable electrical connection, or an integral electrical connection; it can be a mechanical electrical connection, an electrical-electrical connection, or a connection that allows for communication; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two elements or an interaction between two elements. Furthermore, the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this utility model are used to distinguish different objects, not to describe a specific order. The terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0077] Example 1

[0078] Please see Figure 1 , Figure 1 This is a schematic diagram of a display control circuit disclosed in an embodiment of the present invention. This circuit can be applied to display devices or other electronic devices with display functions; the present invention does not limit its application. Furthermore, the display device can be equipped with a display screen; the present invention does not limit its application either. Figure 1 As shown, the display control circuit 10 may include a display driver circuit 101, a Type-C transmission control circuit 102, an HDMI (High Definition Multimedia Interface) transmission control circuit 103, and a video signal output circuit 104, wherein:

[0079] The Type-C input terminal of the display driver circuit 101 is electrically connected to the output terminal of the Type-C transmission control circuit 102; the HDMI input terminal of the display driver circuit 101 is electrically connected to the output terminal of the HDMI transmission control circuit 103; the video signal output terminal of the display driver circuit 101 is electrically connected to the video signal input terminal of the video signal output circuit 104; and the power supply terminal 101 of the display driver circuit is electrically connected to the power supply terminal of the Type-C transmission control circuit 102.

[0080] The signal source input terminal of the Type-C transmission control circuit 102 is used to electrically connect to a Type-C signal source; the signal source input terminal of the HDMI transmission control circuit 103 is used to electrically connect to an HDMI signal source; and the output terminal of the video signal output circuit 104 is used to electrically connect to a display screen.

[0081] Type-C transmission control circuit 102 is used to supply power to display driver circuit 101 and / or transmit Type-C input signals to display driver circuit 101 based on the connected Type-C signal source;

[0082] The HDMI transmission control circuit 103 is used to transmit HDMI input signals to the display driver circuit 101.

[0083] The display driver circuit 101 is used to transmit a video output signal to the video signal output circuit 104 according to the received input signal; the input signal includes a Type-C input signal and / or an HDMI input signal.

[0084] The video signal output circuit 104 is used to project the video output signal onto the display screen.

[0085] Optionally, the display screen can be configured on a display device; this embodiment does not impose any limitations.

[0086] Optionally, based on the connected Type-C signal source, a power supply voltage of 5V-20V can be provided to the display driver circuit 101 to achieve a wide range of voltage input. This embodiment does not impose any limitations.

[0087] Optionally, the Type-C transmission control circuit 102 may include two Type-C interfaces, supporting blind insertion of Type-C, supporting PD reverse charging (i.e., it can reverse charge the signal source device, with a maximum charging power of 100W), and supporting wide voltage input (5V-20V) to be compatible with more devices.

[0088] Optionally, the HDMI transmission control circuit 103 may include one HDMI interface, which can support video transmission of multiple resolutions; further optionally, the HDMI interface can support multiple resolutions such as 3840*2160@60Hz, 2560*1600@120Hz / 144Hz / 165Hz, etc., which are not limited in this embodiment.

[0089] As can be seen, this utility model embodiment provides an easily implemented circuit that can power the display driver circuit and / or transmit Type-C input signals via a Type-C transmission control circuit using the connected Type-C signal source. Alternatively, it can transmit HDMI input signals to the display driver circuit via an HDMI transmission control circuit. The display driver circuit then transmits video output signals to the video signal output circuit based on the received input signals, and the video output circuit projects the video output signals onto the display screen. This allows the device to receive various types of input signals via Type-C and HDMI interfaces and efficiently project video output signals onto the display screen, thereby meeting diverse user display needs and being compatible with various input / output devices. This provides users with more convenient and diverse display functions, which is beneficial for building portable display devices.

[0090] In an optional embodiment, the display driving circuit 101 may include a display driving chip 1011, a flash memory circuit 1012, a clock circuit 1013, and a reset circuit 1014, wherein:

[0091] The Type-C input terminal of the display driver chip 1011 is electrically connected to the output terminal of the Type-C transmission control circuit 102; the HDMI input terminal of the display driver chip 1011 is electrically connected to the output terminal of the HDMI transmission control circuit 103; and the video signal output terminal of the display driver chip 1011 is electrically connected to the video signal input terminal of the video signal output circuit 104.

[0092] The SPI (Serial Peripheral Interface) terminal of the flash memory circuit 1012 is electrically connected to the SPI terminal of the display driver chip 1011.

[0093] The clock input terminal of the clock circuit 1013 is electrically connected to the clock input terminal of the display driver chip 1011, and the clock output terminal of the clock circuit 1013 is electrically connected to the clock output terminal of the display driver chip 1011.

[0094] The reset signal terminal of the reset circuit 1014 is electrically connected to the reset signal terminal of the display driver chip 1011;

[0095] The display driver chip 1011 is used to output a video output signal to the video signal output circuit 104 based on the received input signal.

[0096] The flash memory circuit 1012 is used to store the program required to run by the display driver chip 1011 and the corresponding running data of the display driver chip 1011;

[0097] Clock circuit 1013 is used to provide clock signals to display driver chip 1011;

[0098] The reset circuit 1014 is used to initialize the display driver chip 1011.

[0099] Optional, please refer to Figure 4 , Figure 4 This is a schematic diagram of the structure of a display driver chip disclosed in an embodiment of this utility model, as shown below. Figure 4 As shown, the display driver chip can be U2, and the model of the display driver chip can be RTD2775QT, or other chips that can realize the display driver function. This embodiment does not limit the specific chip.

[0100] Optional, please refer to Figure 5 , Figure 5 This is a schematic diagram of a flash memory circuit disclosed in an embodiment of the present invention, as shown below. Figure 5 As shown, the flash memory circuit 1012 may include a FLASH memory U15. Optionally, the FLASH memory U15 may be a FLASH 25L16, or more specifically, a KH25V16066M1I02; this embodiment does not limit the specific type. The CE#, SO, SCK, and SI pins of the FLASH memory U15 are electrically connected to the SPI_CEB, SPI_SO, SPI_SCK, and SPI_SI pins of the display driver chip U2, respectively. The other electronic components included in the flash memory circuit 1012, the connections between these components, and the connections between these components and other circuit structures are detailed in [reference needed]. Figure 5 .

[0101] Optional, please refer to Figure 6 , Figure 6 This is a schematic diagram of a clock circuit and a reset circuit disclosed in an embodiment of this utility model, as shown below. Figure 6 As shown, the clock circuit 1013 may include a crystal oscillator Y1, and the reset circuit 1014 may include a resistor R188 and a capacitor C132. The specific details regarding the other electronic components included in the clock circuit 1013 and the reset circuit 1014, the connections between these components, and the connections between these components and other circuit structures are as follows: Figure 6 .

[0102] As can be seen, this optional embodiment, by setting a display driver chip in the display driver circuit, can more efficiently process various types of input signals and output high-definition video signals. While ensuring the picture quality of the output video signal, it has high compatibility and scalability, thus helping to meet users' display needs for multiple formats and multiple devices. Furthermore, by setting flash memory circuit, clock circuit, and reset circuit in the display driver circuit, it can ensure the precise operation of the display driver chip, which helps to improve the operational reliability of the display driver chip, thereby improving the processing accuracy and transmission accuracy of the display driver circuit for input and output signals.

[0103] In an optional embodiment, the Type-C signal source includes a first Type-C signal source and / or a second Type-C signal source;

[0104] Optional, please refer to Figure 3 , Figure 3 This is a schematic diagram of another display control circuit disclosed in an embodiment of this utility model, as shown below. Figure 3 As shown, the Type-C transmission control circuit 102 may include a first Type-C interface circuit 1021, a second Type-C interface circuit 1022, and a voltage selection circuit 1023, wherein:

[0105] The video signal terminal of the first Type-C interface circuit 1021 is electrically connected to the first Type-C input terminal of the display driver circuit; the power supply terminal of the first Type-C interface circuit 1021 is electrically connected to the first power supply terminal of the voltage selection circuit 1023; the signal source access terminal of the first Type-C interface circuit 1021 is used to electrically connect to the first Type-C signal source.

[0106] The video signal terminal of the second Type-C interface circuit 1022 is electrically connected to the second Type-C input terminal of the display driver circuit; the power supply terminal of the second Type-C interface circuit 1022 is electrically connected to the second power supply terminal of the voltage selection circuit 1023; the signal source input terminal of the second Type-C interface circuit 1022 is used to electrically connect to the second Type-C signal source; the power supply terminal of the display driver circuit 101 is electrically connected to the third power supply terminal of the voltage selection circuit 1023.

[0107] The first Type-C interface circuit 1021 is used to transmit the first Type-C input signal to the display driver circuit;

[0108] The second Type-C interface circuit 1022 is used to transmit the second Type-C input signal to the display driver circuit;

[0109] The voltage selection circuit 1023 is used to supply power to the display driving circuit based on the determined target Type-C signal source; the target Type-C signal source is the Type-C signal source connected to the Type-C transmission control circuit 102.

[0110] For example, when it is detected that the first Type-C interface circuit 1021 has been connected to the first Type-C signal source, the target Type-C signal source can be the first Type-C signal source; when it is detected that the second Type-C interface circuit 1021 has been connected to the second Type-C signal source, the target Type-C signal source can be the second Type-C signal source. This embodiment does not limit the target Type-C signal source.

[0111] As can be seen, this optional embodiment can increase the number of Type-C signal sources that the display control circuit can access by setting two Type-C interface circuits, thereby improving the compatibility of the signal input devices corresponding to the display control circuit and improving the control flexibility of the display control circuit in terms of power supply and / or signal transmission of Type-C signal sources.

[0112] In this optional embodiment, optionally, please refer to Figure 7 , Figure 7 This is a schematic diagram of the structure of a first Type-C interface circuit disclosed in an embodiment of this utility model, as shown below. Figure 7 As shown, the first Type-C interface circuit 1021 may include a first Type-C interface 10211 and a first ESD (Electro-Static discharge) electrostatic protection circuit 10212.

[0113] Among them, the first Type-C interface 10211 can be Figure 7 The TYPE-C1 in the first Type-C interface 10211 can be a Type-C female connector, but this embodiment is not limited to this. The video signal end of the first Type-C interface 10211 (which may include, for example...) Figure 7 The 1CTX2_P, 1CTX2_N, 1CRX2_P, 1CRX2_N, 1CRX1_P, 1CRX1_N, 1CTX1_P, and 1CTX1_N shown are connected to the first Type-C input terminal of the display driver circuit (which can be...). Figure 4 The LANE0P / N_0-LANE3P / N_0 signal terminals corresponding to D0 shown are electrically connected.

[0114] The first ESD electrostatic discharge protection circuit 10212 may include an electrostatic discharge protection chip UX1, an electrostatic discharge protection chip UX2, an ESD diode DV8, an ESD diode DV7, an ESD diode DV17, an ESD diode DV16, an ESD diode DV18, and an ESD diode DV20. Each terminal of the two electrostatic discharge protection chips can be electrically connected to the video signal terminal of the first Type-C interface, and the first terminal of each ESD diode can be connected to the USB data terminal of the first Type-C interface (which may include...). Figure 4 The D1_P and D1_N shown), and the connection identification terminal of the first Type-C interface (which may include D1_P and D1_N shown), are shown. Figure 4 The C0_CC1 and C0_CC2 shown are electrically connected to the C1_DET of the first Type-C interface, and the second end of each ESD diode is used for grounding.

[0115] Optionally, the electrostatic discharge protection chips UX1 and UX2 can be WS05-4R3P, or other chips or components that can achieve electrostatic discharge protection function. This embodiment does not limit them.

[0116] Specifically, the other electronic components included in the first Type-C interface circuit 1021, the connection relationships between the included electronic components, and the connection relationships between the included electronic components and other circuit structures are detailed in [reference needed]. Figure 7 .

[0117] In this optional embodiment, optionally, please refer to Figure 8 , Figure 8 This is a schematic diagram of the structure of a second Type-C interface circuit disclosed in an embodiment of this utility model, as shown below. Figure 8 As shown, similar to the first Type-C interface circuit 1021, the second Type-C interface circuit 1022 may include a second Type-C interface 10221 and a second ESD electrostatic protection circuit 10222.

[0118] Among them, the second Type-C interface 10221 can be Figure 8 The TYPE-C2 in the second Type-C interface 10221 can be a Type-C female connector, but this embodiment is not limited to this. The video signal end of the second Type-C interface 10221 (which may include, for example...) Figure 2 The 2CTX2_P, 2CTX2_N, 2CRX2_P, 2CRX2_N, 2CRX1_P, 2CRX1_N, 2CTX1_P, and 2CTX1_N shown are connected to the second Type-C input terminal of the display driver circuit (which can be...). Figure 4 The signal terminals (LANE0P / N_1-LANE3P / N_1) corresponding to D1 shown are electrically connected.

[0119] The second ESD electrostatic protection circuit 10222 may include an electrostatic protection chip UX3, an electrostatic protection chip UX5, an ESD diode DV9, an ESD diode DV14, an ESD diode DV11, an ESD diode DV12, an ESD diode DV13, and an ESD diode DV19.

[0120] The specific details regarding the other electronic components included in the second Type-C interface circuit 1022, the connections between these electronic components, and the connections between these electronic components and other circuit structures are as follows: Figure 8 .

[0121] It is evident that by setting corresponding ESD electrostatic protection circuits for different Type-C interface circuits, electrostatic protection can be provided to the Type-C interface in a targeted manner, reducing the possibility of interference to the Type-C input signal. This is beneficial to improving the stability and reliability of signal transmission between the Type-C interface and the display driver circuit, and in turn, improving the accuracy of subsequent processing and display of the input signal.

[0122] In this optional embodiment, optionally, please refer to Figure 9 , Figure 9 This is a schematic diagram of a voltage selection circuit disclosed in an embodiment of the present invention, as shown below. Figure 9 As shown, the voltage selection circuit 1023 may include a first switching device Q13, a second switching device Q14, a first diode D1, and a second diode D2, wherein:

[0123] The first terminal of the first switching device Q13 is electrically connected to the power supply terminal of the first Type-C interface circuit 1021 and the first terminal of the first diode D1, respectively. The second terminal of the first switching device Q13 is used to electrically connect to the first enable signal. The first terminal of the second switching device Q14 is electrically connected to the power supply terminal of the second Type-C interface circuit 1022 and the first terminal of the second diode D2, respectively. The second terminal of the second switching device Q14 is used to electrically connect to the second enable signal. The power supply terminal of the display driving circuit 101 is electrically connected to the third terminal of the first switching device Q13, the third terminal of the second switching device Q14, the second terminal of the first diode D1, and the second terminal of the second diode D2, respectively.

[0124] Further optionally, the first switching device Q13 and the second switching device Q14 can be MOSFETs or other components that can achieve the same conduction control function; this embodiment does not limit them. Furthermore, the first switching device Q13 and the second switching device Q14 can be LT7409FL-Y or AON7401, or other MOSFET models; this embodiment does not limit them.

[0125] Further optionally, the first diode D1 and the second diode D2 can be Schottky diodes; further still, the first diode D1 and the second diode D2 can be SS34F or other diode models, which are not limited in this embodiment.

[0126] The voltage selection circuit 1023 includes other electronic components, the connections between these components, and the connections between these components and other circuit structures. (See attached diagram for details.) Figure 9 .

[0127] It is evident that by setting two switching devices in the voltage selection circuit, the power supply to the display driver circuit can be flexibly selected when different Type-C interfaces are connected to Type-C signal sources, thereby improving the power supply flexibility of the Type-C transmission control circuit to the display driver circuit; and by setting two diodes in the voltage selection circuit, rectification and overcurrent protection can be provided for the voltage selection circuit, improving the circuit's safety.

[0128] In this optional embodiment, optionally, such as Figure 3 As shown, the Type-C transmission control circuit 102 may further include a USB signal processing circuit 1024, wherein:

[0129] The first USB data terminal of the USB signal processing circuit 1024 is electrically connected to the USB data terminal of the first Type-C interface circuit 1021, and the second USB data terminal of the USB signal processing circuit 1024 is electrically connected to the USB data terminal of the second Type-C interface circuit 1022; the first connection identification terminal of the USB signal processing circuit 1024 is electrically connected to the connection identification terminal of the first Type-C interface circuit 1021, and the second connection identification terminal of the USB signal processing circuit 1024 is electrically connected to the connection identification terminal of the second Type-C interface circuit 1022.

[0130] The USB signal processing circuit 1024 is used to automatically adapt to the target Type-C signal source; and to perform a signal format conversion operation on the USB data transmission signal corresponding to the target Type-C signal source in order to transmit the data transmission signal in the target format.

[0131] Optionally, the automatic adaptation to the target Type-C signal source may specifically include: automatically identifying and automatically allocating the Type-C interface circuit that has been connected to the Type-C signal source, identifying the insertion direction of the Type-C signal source, and optimizing USB signal transmission. It may also include other functions that can be implemented by the PD (USB Power Delivery) circuit to automatically adapt to the Type-C signal source, which are not limited in this embodiment.

[0132] Optionally, the target format can be RS232 protocol format or USB2.0 format, or other communication protocol formats related to UART (Universal Asynchronous Receiver / Transmitter). This embodiment does not limit the specific format.

[0133] It is evident that by adding a USB signal processing circuit to the Type-C transmission control circuit, the control accuracy of the two Type-C interface circuits can be further improved, as well as the transmission accuracy and reliability of signals related to the Type-C interface circuits.

[0134] In this optional embodiment, the USB signal processing circuit 1024 may optionally include a dual-interface control circuit 10241, a signal conversion circuit 10242, and a USB signal output selection circuit 10243, wherein:

[0135] The power supply terminal of the dual-interface control circuit 10241 and the power supply terminal of the signal conversion circuit 10242 are respectively used to electrically connect to the first system power supply voltage; the first connection identification terminal of the dual-interface control circuit 10241 is electrically connected to the connection identification terminal of the first Type-C interface circuit 1021, the second connection identification terminal of the dual-interface control circuit 10241 is electrically connected to the connection identification terminal of the second Type-C interface circuit 1022, and the UART communication terminal of the dual-interface control circuit 10241 is electrically connected to the UART communication terminal of the signal conversion circuit 10242.

[0136] The differential signal terminal of the USB signal output selection circuit 10243 is electrically connected to the differential signal terminal of the signal conversion circuit 10242, the first USB data terminal of the USB signal output selection circuit 10243 is electrically connected to the USB data terminal of the first Type-C interface circuit 1021, and the second USB data terminal of the USB signal output selection circuit 10243 is electrically connected to the USB data terminal of the second Type-C interface circuit 1022.

[0137] The dual-interface control circuit 10241 is used to control the display driver circuit 101 to automatically adapt to the target Type-C signal source.

[0138] The signal conversion circuit 10242 is used to perform a signal format conversion operation on the USB data transmission signal corresponding to the target Type-C signal source, so as to transmit the data transmission signal of the target format to the USB signal output selection circuit 10243.

[0139] The USB signal output selection circuit 10243 is used to transmit data transmission signals in the target format.

[0140] Optionally, the first system power supply voltage can be 5V. Further, the second system power supply voltage can be the voltage provided by other circuits in the display control circuit 10. This embodiment does not limit the voltage.

[0141] Optional, please refer to Figure 10 , Figure 10 This is a schematic diagram of the structure of a dual-interface control circuit disclosed in an embodiment of this utility model, as shown below. Figure 10 As shown, the dual-interface control circuit 10241 may include a PD chip U3. Optionally, the PD chip U3 may be an LDR6282, where LDR6282 is a USB PD3.0 protocol communication chip with dual USB-C interfaces. The PD chip U3 may also be other types of chips; this embodiment is not limited to any particular type. The first connection identification terminal of the dual-interface control circuit may be C0_CC1, and the second connection identification terminal may be C0_CC2. The UART communication terminal of the dual-interface control circuit 10241 may include UART_RX and UART_TX. For details regarding other electronic components included in the dual-interface control circuit 10241, the connections between these components, and the connections between these components and other circuit structures, please refer to [reference needed]. Figure 10 .

[0142] Optional, please refer to Figure 11 , Figure 11 This is a schematic diagram of the structure of a signal conversion circuit disclosed in an embodiment of this utility model, as shown below. Figure 11 As shown, the signal conversion circuit 10242 may include a signal conversion chip U9. Optionally, the signal conversion chip U9 may be an LDR2001, where LDR2001 is a driverless USB-to-serial chip that can implement USB-to-serial and Billboard functions. The signal conversion chip U9 may also be other types of chips; this embodiment is not limited. Optionally, the signal conversion chip U9 may be used to convert one of the received USB 2.0 signals from the TYPE-C1 and TYPE-C2 interfaces into RS232 serial port protocol signals. The differential signal terminal of the signal conversion circuit 10242 may include... Figure 11The USP_DP and USP_DM are specified in the diagram. For details regarding the other electronic components included in the signal conversion circuit 10242, the connections between these components, and their connections to other circuit structures, please refer to [reference needed]. Figure 11 .

[0143] Optional, please refer to Figure 12 , Figure 12 This is a schematic diagram of a USB signal output selection circuit disclosed in an embodiment of this utility model, as shown below. Figure 12 As shown, the USB signal output selection circuit 10243 may include a USB switch chip U7. Optionally, the USB switch chip U7 can be a WAS7227 or an SGM7227. The SGM7227 is a high-speed, low-power bipolar / double-throw analog switch. Other chip models can also be used; this embodiment is not limited to any particular model. The USB switch chip U7 is used to switch and select the USB 2.0 signals from the TYPE-C1 and TYPE-C2 interfaces, and then outputs the selected signal. The first USB data terminal of the USB signal output selection circuit 10243 can be... Figure 12 In the D1_N and D1_P, the second USB data port can be Figure 12 D2_N and D2_P in the circuit. Specifically, the other electronic components included in the USB signal output selection circuit 10243, the connections between these components, and the connections between these components and other circuit structures are detailed in [reference needed]. Figure 12 .

[0144] It is evident that by incorporating a dual-interface control circuit into the USB signal processing circuit, the Type-C signal sources connected to the two Type-C interface circuits can be intelligently controlled, thereby improving the accuracy and reliability of communication control between the Type-C signal sources connected to the Type-C interface transmission circuit and the display control circuit. Furthermore, by incorporating a signal conversion circuit into the USB signal processing circuit, the format of USB signals and serial port protocol signals can be converted, which improves the accuracy and flexibility of communication between the Type-C signal sources and the display driver circuit. Finally, by incorporating a USB signal output selection circuit into the USB signal processing circuit, the accuracy of determining the Type-C signal source from which the display driver circuit needs to output signals can be improved, as can the accuracy of controlling the output signals from the display driver circuit to the Type-C signal sources.

[0145] In an optional embodiment, please refer to Figure 13 , Figure 13This is a schematic diagram of the structure of an HDMI transmission control circuit disclosed in an embodiment of this utility model, as shown below. Figure 13 As shown, the HDMI transmission control circuit 103 may include an HDMI interface 1031, a third ESD electrostatic protection circuit 1032, and an EMI (Electromagnetic Interference) radiation suppression circuit 1033. The HDMI interface 1031 can be... Figure 13 HDMI1 in the middle.

[0146] Furthermore, the third ESD electrostatic protection circuit 1032 may include an electrostatic protection chip UX4, an electrostatic protection chip UX6, an ESD diode DV2, an ESD diode DV3, an ESD diode DV4, an ESD diode DV5, and an ESD diode DV6.

[0147] Furthermore, the HDMI transmission control circuit 103 may also include an EEPROM (Electrically Erasable Programmable Read-Only Memory) storage circuit 1034. Optionally, the EEPROM storage circuit 1034 may include an EEPROM storage chip UDDC.

[0148] The other electronic components included in the HDMI transmission control circuit 103, the connection relationships between these electronic components, and the connection relationships between these electronic components and other circuit structures are detailed in the following references. Figure 13 .

[0149] It is evident that by setting ESD electrostatic protection circuits and EMI radiation suppression circuits in the HDMI transmission control circuit, electrostatic protection and radiative interference suppression can be provided to the HDMI interface, thereby reducing the possibility of interference to the TMDS signal transmitted by the HDMI interface. This is beneficial to improving the stability and reliability of signal transmission between the HDMI interface and the display driver circuit, and further improving the accuracy of subsequent processing and display of the input signal.

[0150] In an optional embodiment, please refer to Figure 2 , Figure 2 This is a schematic diagram of another display control circuit disclosed in an embodiment of the present utility model, as shown below. Figure 2 As shown, the display control circuit 10 may further include a voltage conversion circuit 105, wherein:

[0151] The first power supply terminal of the voltage conversion circuit 105 is electrically connected to the first power supply terminal of the Type-C transmission control circuit 102; the second power supply terminal of the voltage conversion circuit 105 is electrically connected to the second power supply terminal of the Type-C transmission control circuit 102 and the first power supply terminal of the video signal output circuit 104, respectively; the third power supply terminal of the voltage conversion circuit 105 is electrically connected to the power supply terminal of the display driving circuit 101.

[0152] The voltage conversion circuit 105 is used to convert the power supply voltage provided by the Type-C transmission control circuit 102 into the target power supply voltage.

[0153] As can be seen, this optional embodiment can convert the voltage provided by the Type-C transmission control circuit into the voltage required by other circuits in the display control circuit by setting a voltage conversion circuit. This allows it to provide a stable and accurate power supply voltage to other circuits in the display control circuit while supporting a wide range of voltage inputs, which is beneficial to improving the operational reliability and stability of the display control circuit.

[0154] In this optional embodiment, such as Figure 3 As shown, optionally, the voltage conversion circuit 105 may include a first-stage voltage conversion circuit 1051 and a second-stage voltage conversion circuit 1052, wherein:

[0155] The voltage input terminal of the first-stage voltage conversion circuit 1051 is electrically connected to the first power supply terminal of the Type-C transmission control circuit 102, and the voltage output terminal of the first-stage voltage conversion circuit 1051 is electrically connected to the voltage input terminal of the second-stage voltage conversion circuit 1052, the second power supply terminal of the Type-C transmission control circuit 102, and the first power supply terminal of the video signal output circuit 104, respectively.

[0156] The voltage output terminal of the secondary voltage conversion circuit 1052 is electrically connected to the power supply terminal of the display driver circuit 101.

[0157] The first-stage voltage conversion circuit 1051 is used to convert the power supply voltage provided by the Type-C transmission control circuit 102 into the first-stage power supply voltage.

[0158] The 1052 is a two-stage voltage conversion circuit used to convert the primary power supply voltage to the secondary power supply voltage.

[0159] Optionally, the first system power supply voltage in this embodiment can be a primary power supply voltage, but this embodiment does not limit it.

[0160] It is evident that by setting up a first-stage voltage conversion circuit and a second-stage voltage conversion circuit in the voltage conversion circuit, the flexibility and accuracy of voltage conversion can be improved, and it is also beneficial to provide multiple power supply voltages to other circuits in the display control circuit, thereby providing a stable and accurate power supply voltage to other circuits in the display control circuit.

[0161] In this optional embodiment, optionally, please refer to Figure 14 , Figure 14 This is a schematic diagram of a first-stage voltage conversion circuit disclosed in an embodiment of this utility model, as shown below. Figure 14 As shown, the first-stage voltage conversion circuit 1051 may include a first step-down chip U1, resistor R9, and resistor R11. Optionally, the first step-down chip U1 may be an MT3905 or other models; this embodiment does not limit the specific type.

[0162] The voltage value of the first-stage power supply voltage output by the first-stage voltage conversion circuit 1051 can be calculated as follows: Vout=0.8*(1+R9 / R11); Optionally, the first-stage power supply voltage can be 5V, which is not limited in this embodiment.

[0163] The specific details regarding the other electronic components included in the first-stage voltage conversion circuit 1051, the connections between these components, and the connections between these components and other circuit structures are as follows: Figure 14 .

[0164] It is evident that by employing a step-down chip in the primary voltage conversion circuit, the accuracy and efficiency of voltage conversion can be improved.

[0165] In this optional embodiment, optionally, such as Figure 3 As shown, the secondary voltage conversion circuit 1052 may include a first buck circuit 10521, a second buck circuit 10522, a third buck circuit 10523, and a fourth buck circuit 10524, wherein:

[0166] The voltage input terminals of the first step-down circuit 10521, the second step-down circuit 10522, the third step-down circuit 10523, and the fourth step-down circuit 10524 are respectively electrically connected to the voltage output terminal of the first-stage voltage conversion circuit 1051.

[0167] The voltage output terminal of the first step-down circuit 10521 is electrically connected to the first power supply terminal of the display driver circuit 101, the voltage output terminal of the second step-down circuit 10522 is electrically connected to the second power supply terminal of the display driver circuit 101, the voltage output terminal of the third step-down circuit 10523 is electrically connected to the third power supply terminal of the display driver circuit 101, and the voltage output terminal of the fourth step-down circuit 10524 is electrically connected to the fourth power supply terminal of the display driver circuit 101.

[0168] The secondary power supply voltage includes the first power supply voltage corresponding to the first step-down circuit 10521, the second power supply voltage corresponding to the second step-down circuit 10522, the third power supply voltage corresponding to the third step-down circuit 10523, and the fourth power supply voltage corresponding to the fourth step-down circuit 10524.

[0169] In this embodiment, the first, second, third, and fourth power supply voltages are all lower than the first-level power supply voltage. Optionally, the first power supply voltage can be 3.3V, the second power supply voltage can be 1.1V, the third power supply voltage can be 1.1V, and the fourth power supply voltage can be 1.8V; this embodiment is not limited to any particular voltage. Optionally, the second system power supply voltage in this embodiment can be the first power supply voltage in the second-level power supply voltage; this embodiment is not limited to any particular voltage. Further optionally, the second and third power supply voltages can be used to control the activation and deactivation of the display driver chip core voltage, respectively; this embodiment is not limited to any particular voltage.

[0170] Optional, please refer to Figure 15-18 , Figure 15-18 These are schematic diagrams of a first step-down circuit, a second step-down circuit, a third step-down circuit, and a fourth step-down circuit disclosed in the embodiments of this utility model, as shown below. Figure 15-18 As shown, the first step-down circuit includes a second step-down chip U11, the second step-down circuit includes a third step-down chip U4, the third step-down circuit includes a fourth step-down chip U10, and the fourth step-down circuit includes a fifth step-down chip U12. Optionally, the second step-down chip U11, the third step-down chip U4, and the fourth step-down chip U10 can be of model JW5357M, and the fifth step-down chip U12 can be of model JW5250A, or other models of step-down chips; this embodiment does not limit the type of chip.

[0171] The specific details regarding the other electronic components included in the first step-down circuit 10521, the second step-down circuit 10522, the third step-down circuit 10523, and the fourth step-down circuit 10524, the connections between these electronic components, and the connections between these electronic components and other circuit structures are detailed in [reference needed]. Figure 15-18 .

[0172] It is evident that by setting multiple step-down circuits in the secondary voltage conversion circuit, the flexibility and accuracy of voltage conversion can be further improved. This facilitates the efficient and precise supply of different power supply voltages to other circuits in the display control circuit, thereby improving the operational reliability and stability of the display control circuit.

[0173] In an optional embodiment, such as Figure 3 As shown, the video signal output circuit 104 may include a boost circuit 1041, a conduction control circuit 1042, and an IPX interface circuit 1043, wherein:

[0174] The voltage input terminal of the boost circuit 1041 is used to electrically connect to the first system power supply voltage, and the voltage output terminal of the boost circuit 1041 is electrically connected to the first terminal of the IPX interface circuit 1043.

[0175] The first terminal of the conduction control circuit 1042 is used to electrically connect to the second system power supply voltage, the second terminal of the conduction control circuit 1042 is electrically connected to the front panel control terminal of the display driving circuit 101, and the third terminal of the conduction control circuit 1042 is electrically connected to the second terminal of the IPX interface circuit 1043.

[0176] The third terminal of the IPX interface circuit 1043 is electrically connected to the video signal output terminal of the display driver circuit 101; the output terminal of the video signal output circuit 104 is used to electrically connect to the display screen.

[0177] The boost circuit 1041 is used to convert the first system power supply voltage into the fifth power supply voltage and provide the fifth power supply voltage to the IPX interface circuit 1043.

[0178] The conduction control circuit 1042 is used to provide a second system power supply voltage to the IPX interface circuit 1043 when the received activation control signal is a preset control signal;

[0179] The IPX interface circuit 1043 is used to project video output signals onto a display screen.

[0180] Optionally, the first system power supply voltage can be the primary power supply voltage output by the voltage conversion circuit 105, and the second system power supply voltage can be the first power supply voltage output by the voltage conversion circuit 105. This embodiment does not impose any limitations.

[0181] Optionally, the fifth power supply voltage can be 12V, but this embodiment does not limit it.

[0182] Optionally, the preset control signal can be a low-level signal, but this embodiment does not limit it.

[0183] Optional, please refer to Figure 19 , Figure 19This is a schematic diagram of a boost circuit and a conduction control circuit disclosed in an embodiment of this utility model, as shown below. Figure 19 As shown, the boost circuit 1041 may include a boost chip U8, and the turn-on control circuit 1042 may include a third switching device Q6. Optionally, the boost chip U8 may be a SY7120RAC or other models; this embodiment is not limited to any particular type. Optionally, the third switching device Q6 may be a MOSFET or other components capable of achieving the same turn-on control function; this embodiment is not limited to any particular type. Optionally, the turn-on control circuit 1042 may be LOWACTIVE. For details regarding the other electronic components included in the boost circuit 1041 and the turn-on control circuit 1042, the connections between these electronic components, and the connections between these electronic components and other circuit structures, please refer to [reference needed]. Figure 19 .

[0184] Optional, please refer to Figure 20 , Figure 20 This is a schematic diagram of the structure of an IPX interface circuit disclosed in an embodiment of this utility model, as shown below. Figure 20 As shown, the IPX interface circuit 1043 may include an IPX socket J1. The third terminal of the IPX interface circuit 1043 may include, for example... Figure 20 The eDP0+ / eDP0-, eDP1+ / eDP1-, eDP2+ / eDP2-, and eDP3+ / eDP3- shown are used to transmit eDP video signals. For details regarding the other electronic components included in the IPX interface circuit 1043, the connections between these components, and their connections to other circuit structures, please refer to [reference needed]. Figure 20 .

[0185] As can be seen, this optional embodiment can provide different power supply voltages to the IPX interface circuit by setting a boost circuit and a conduction control circuit in the video signal output circuit, thereby meeting the various voltage and control requirements of the IPX interface circuit. Furthermore, by setting an IPX interface circuit in the video signal output circuit, the video output quality can be guaranteed, and the output efficiency and stability of the video signal can be improved, which is beneficial for projecting high-quality video on the display screen.

[0186] In an optional embodiment, such as Figure 2 As shown, the display control circuit 10 may further include a button control circuit 106, wherein:

[0187] The I / O terminals of the button control circuit 106 are electrically connected to the I / O terminals of the display driver circuit 101.

[0188] The button control circuit 106 is used to output button control signals to the display driving circuit 101; the button control signals are used to control the display driving circuit 101.

[0189] Optional, please refer to Figure 21 , Figure 21 This is a schematic diagram of a button control circuit disclosed in an embodiment of the present invention, as shown below. Figure 21 As shown, the button control circuit 106, with respect to the display driver circuit 101, can include button control functions such as POWER, DOWN, UP, MENU, and AUTO. These button control functions are respectively controlled via IO1 / IO2 / IO3 / IO4 / IO5 and... Figure 4 The RTD2775QT display driver chip shown is connected, and the control system is implemented by configuring the level. The control function of the button control circuit 106 regarding the display driver circuit 101 may also include control function for the LED lights, but this embodiment does not limit this. For details regarding the other electronic components included in the button control circuit 106, the connection relationships between these components, and the connection relationships between these components and other circuit structures, please refer to [reference needed]. Figure 21 .

[0190] As can be seen, this optional embodiment, by setting a button control circuit in the display control circuit, allows users to select to control the display control circuit or the display system associated with the display control circuit via buttons, thereby improving the convenience of inputting control commands for the display control circuit and thus improving the control efficiency of the display control circuit.

[0191] In an optional embodiment, such as Figure 2 As shown, the display control circuit 10 may further include an audio signal output circuit 107, wherein:

[0192] The audio receiving end of the audio signal output circuit 107 is electrically connected to the audio transmission end of the display driving circuit 101, and the audio output end of the audio signal output circuit 107 is used to electrically connect to an audio playback device.

[0193] The display driver circuit 101 is also used to transmit audio output signals to the audio signal output circuit 107;

[0194] The audio signal output circuit 107 is used to drive an audio playback device to play audio based on the audio output signal.

[0195] Optional, please refer to Figure 22 , Figure 22 This is a schematic diagram of the structure of an audio signal output circuit disclosed in an embodiment of this utility model, as shown below. Figure 22As shown, the audio signal output circuit 107 may include a power amplifier circuit and a speaker connector H1. The power amplifier circuit may include a power amplifier chip U6, which drives the audio playback device electrically connected to the speaker connector H1 to play audio. Optionally, the power amplifier chip U6 may be an AD82128 or other models; this embodiment is not limited to any particular model. The other electronic components included in the audio signal output circuit 107, the connections between these components, and the connections between these components and other circuit structures are detailed in [reference needed]. Figure 22 .

[0196] As can be seen, this optional embodiment can add an audio playback function that matches the video output signal by setting an audio signal output circuit in the display control circuit, thereby improving the user's audio-visual experience; and by setting a power amplifier circuit and a speaker connector in the audio signal output circuit, the driving capability and reliability of the audio output can be improved, which can further improve the user's experience of the audio output function.

[0197] In this embodiment of the utility model, for example, please refer to [link / reference]. Figure 23 , Figure 23 This is a schematic diagram of another display control circuit disclosed in an embodiment of this utility model. Wherein, as... Figure 23 As shown, the display control circuit may include a Type-C1 interface (i.e., the first Type-C interface mentioned above), a Type-C2 interface (i.e., the second Type-C interface mentioned above), an HDMI interface (i.e., the HDMI interface mentioned above), a MOSFET Manage circuit (i.e., the voltage selection circuit mentioned above), a PD circuit (i.e., the dual-interface control circuit mentioned above), a USB to UART circuit (i.e., the signal conversion circuit mentioned above), a USB Switch circuit (i.e., the USB output selection circuit mentioned above), a DC / DC Buck circuit (i.e., the first-stage voltage conversion circuit mentioned above), a 5V to 3.3V DC / DC circuit (i.e., the first buck circuit mentioned above), a 5V to 1.1V DC / DC circuit (i.e., the second buck circuit mentioned above), a 5V to 1.1V DC / DC circuit (i.e., the third buck circuit mentioned above), a 5V to 1.8V DC / DC circuit (i.e., the fourth buck circuit mentioned above), a MOSFET Manage circuit (i.e., the conduction control circuit mentioned above), a BL BOOST circuit (i.e., the boost circuit mentioned above), a Panel circuit (including the IPX interface circuit mentioned above), an RTD2775QT chip (i.e., the display driver chip mentioned above), a Flash circuit (i.e., the flash memory circuit mentioned above), and a KEY. The circuit consists of a 5KEY circuit (i.e., the aforementioned button control circuit), an AMP Digital circuit (i.e., the aforementioned power amplifier circuit), and a Bear circuit (i.e., the aforementioned speaker connector H1), wherein:

[0198] The Type_C1 interface is electrically connected to the MSOFET Manage circuit via VBUS1, and the Type_C2 interface is electrically connected to the DC / DC Buck circuit via VBUS2. The VBUS of the MSOFET Manage circuit is electrically connected to the DC / DC Buck circuit. The DC / DC Buck circuit outputs 5V voltage to other secondary DC / DC circuits, as well as the BL BOOST circuit, PD circuit, and USB to UART circuit. The secondary DC / DC circuits output the stepped-down voltage to the RTD2775QT chip. The Type_C1 interface transmits input signals to the RTD2775QT chip via DP1, the Type_C2 interface via DP2, and the HDMI interface via TMDS. The RTD2775QT chip is electrically connected to the Flash circuit via SPI and to the KEY 5KEY circuit via GPIO.

[0199] The PD circuit and the USB to UART circuit are electrically connected via UART. The USB to UART circuit is electrically connected to the USB Switch circuit. The USB Switch circuit is electrically connected to the Type_C1 and Type_C2 interfaces via USB_DATA1 and USB_DATA2 respectively, so as to switch the required Type_C interface and output USB2.0 signal to the Type_C interface.

[0200] The panel circuit is supplied with 3.3V via the MOS Manage circuit and 12V via the BL BOOST circuit. The RTD2775QT chip transmits video output signals to the panel circuit via 4lane_EDP to project the video output signals onto the display screen. The RTD2775QT chip also transmits audio output signals to the power amplifier circuit via I2S to drive the external speaker connected to the speaker connector to play audio. This embodiment is not limited to any particular type of speaker.

[0201] Example 2

[0202] Please see Figure 8 , Figure 8This is a schematic diagram of a display device disclosed in an embodiment of the present invention. The display device includes any of the display control circuits as described in Embodiment 1. The functions that the display device can achieve include, but are not limited to, meeting diverse display needs and being compatible with diverse input / output devices. Further, the display device may be equipped with a display screen; this embodiment is not limited thereto. Further optionally, the display device may be a portable design; this embodiment is not limited thereto. Still further optionally, the display device may be equipped with a magnetic stand to facilitate user installation and removal of the stand at any time; this embodiment is not limited thereto. It should be noted that for a detailed description of the display control circuit, please refer to the specific description of the relevant content in Embodiment 1; this embodiment will not repeat it.

[0203] It is evident that implementation Figure 8 The described display device provides an easily implemented circuit that can power and / or transmit Type-C input signals to the display driver circuit via a Type-C transmission control circuit using an accessed Type-C signal source. It can also transmit HDMI input signals to the display driver circuit via an HDMI transmission control circuit. The display driver circuit then transmits video output signals to a video signal output circuit based on the received input signals, which in turn projects the video output signals onto the display screen. This device can receive various types of input signals via Type-C and HDMI interfaces and efficiently project video output signals onto the display screen. This allows it to meet diverse user display needs and is compatible with various input / output devices, providing users with more convenient and diverse display functions, and facilitating the construction of portable display devices.

[0204] Finally, it should be noted that the display control circuit and display device disclosed in this utility model embodiment are merely preferred embodiments of this utility model, and are only used to illustrate the technical solutions of this utility model, not to limit it; although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the various embodiments of this utility model.

Claims

1. A display control circuit, characterized in that, The display control circuit includes a display driver circuit, a Type-C transmission control circuit, an HDMI transmission control circuit, and a video signal output circuit, wherein: The Type-C input terminal of the display driver circuit is electrically connected to the output terminal of the Type-C transmission control circuit; the HDMI input terminal of the display driver circuit is electrically connected to the output terminal of the HDMI transmission control circuit; the video signal output terminal of the display driver circuit is electrically connected to the video signal input terminal of the video signal output circuit; and the power supply terminal of the display driver circuit is electrically connected to the power supply terminal of the Type-C transmission control circuit. The signal source input terminal of the Type-C transmission control circuit is used to electrically connect to a Type-C signal source; the signal source input terminal of the HDMI transmission control circuit is used to electrically connect to an HDMI signal source; the output terminal of the video signal output circuit is used to electrically connect to a display screen. The Type-C transmission control circuit is used to supply power to the display driver circuit and / or transmit Type-C input signals to the display driver circuit based on the connected Type-C signal source; The HDMI transmission control circuit is used to transmit HDMI input signals to the display driver circuit; The display driver circuit is used to transmit a video output signal to the video signal output circuit according to the received input signal; the input signal includes the Type-C input signal and / or the HDMI input signal; The video signal output circuit is used to project the video output signal onto the display screen.

2. The display control circuit according to claim 1, characterized in that, The Type-C signal source includes a first Type-C signal source and / or a second Type-C signal source; the Type-C transmission control circuit includes a first Type-C interface circuit, a second Type-C interface circuit, and a voltage selection circuit, wherein: The video signal terminal of the first Type-C interface circuit is electrically connected to the first Type-C input terminal of the display driver circuit; the power supply terminal of the first Type-C interface circuit is electrically connected to the first power supply terminal of the voltage selection circuit; the signal source input terminal of the first Type-C interface circuit is used to electrically connect to the first Type-C signal source. The video signal terminal of the second Type-C interface circuit is electrically connected to the second Type-C input terminal of the display driver circuit; the power supply terminal of the second Type-C interface circuit is electrically connected to the second power supply terminal of the voltage selection circuit; the signal source input terminal of the second Type-C interface circuit is used to electrically connect to the second Type-C signal source; the power supply terminal of the display driver circuit is electrically connected to the third power supply terminal of the voltage selection circuit. The first Type-C interface circuit is used to transmit a first Type-C input signal to the display driver circuit; The second Type-C interface circuit is used to transmit a second Type-C input signal to the display driver circuit; The voltage selection circuit is used to supply power to the display driving circuit based on the determined target Type-C signal source; the target Type-C signal source is the Type-C signal source connected to the Type-C transmission control circuit.

3. The display control circuit according to claim 2, characterized in that, The Type-C transmission control circuit also includes a USB signal processing circuit, wherein: The first USB data terminal of the USB signal processing circuit is electrically connected to the USB data terminal of the first Type-C interface circuit, and the second USB data terminal of the USB signal processing circuit is electrically connected to the USB data terminal of the second Type-C interface circuit; the first connection identification terminal of the USB signal processing circuit is electrically connected to the connection identification terminal of the first Type-C interface circuit, and the second connection identification terminal of the USB signal processing circuit is electrically connected to the connection identification terminal of the second Type-C interface circuit. The USB signal processing circuit is used to automatically adapt to the target Type-C signal source; and to perform a signal format conversion operation on the USB data transmission signal corresponding to the target Type-C signal source, so as to transmit the data transmission signal in the target format.

4. The display control circuit according to claim 1, characterized in that, The display control circuit further includes a voltage conversion circuit, wherein: The first power supply terminal of the voltage conversion circuit is electrically connected to the first power supply terminal of the Type-C transmission control circuit; the second power supply terminal of the voltage conversion circuit is electrically connected to the second power supply terminal of the Type-C transmission control circuit and the first power supply terminal of the video signal output circuit; the third power supply terminal of the voltage conversion circuit is electrically connected to the power supply terminal of the display driving circuit. The voltage conversion circuit is used to convert the power supply voltage provided by the Type-C transmission control circuit into the target power supply voltage.

5. The display control circuit according to claim 4, characterized in that, The voltage conversion circuit includes a first-stage voltage conversion circuit and a second-stage voltage conversion circuit, wherein: The voltage input terminal of the first-stage voltage conversion circuit is electrically connected to the first power supply terminal of the Type-C transmission control circuit, and the voltage output terminal of the first-stage voltage conversion circuit is electrically connected to the voltage input terminal of the second-stage voltage conversion circuit, the second power supply terminal of the Type-C transmission control circuit, and the first power supply terminal of the video signal output circuit, respectively. The voltage output terminal of the secondary voltage conversion circuit is electrically connected to the power supply terminal of the display driver circuit. The first-stage voltage conversion circuit is used to convert the power supply voltage into a first-stage power supply voltage; The secondary voltage conversion circuit is used to convert the primary power supply voltage into a secondary power supply voltage; wherein, the target power supply voltage includes the primary power supply voltage and the secondary power supply voltage.

6. The display control circuit according to claim 5, characterized in that, The secondary voltage conversion circuit includes a first buck circuit, a second buck circuit, a third buck circuit, and a fourth buck circuit, wherein: The voltage input terminals of the first step-down circuit, the second step-down circuit, the third step-down circuit, and the fourth step-down circuit are respectively electrically connected to the voltage output terminal of the first-stage voltage conversion circuit. The voltage output terminal of the first step-down circuit is electrically connected to the first power supply terminal of the display driver circuit, the voltage output terminal of the second step-down circuit is electrically connected to the second power supply terminal of the display driver circuit, the voltage output terminal of the third step-down circuit is electrically connected to the third power supply terminal of the display driver circuit, and the voltage output terminal of the fourth step-down circuit is electrically connected to the fourth power supply terminal of the display driver circuit. The secondary power supply voltage includes the first power supply voltage corresponding to the first step-down circuit, the second power supply voltage corresponding to the second step-down circuit, the third power supply voltage corresponding to the third step-down circuit, and the fourth power supply voltage corresponding to the fourth step-down circuit.

7. The display control circuit according to any one of claims 1-6, characterized in that, The video signal output circuit includes a boost circuit, a conduction control circuit, and an IPX interface circuit, wherein: The voltage input terminal of the boost circuit is used to electrically connect to the first system power supply voltage, and the voltage output terminal of the boost circuit is electrically connected to the first terminal of the IPX interface circuit. The first terminal of the conduction control circuit is used to electrically connect to the second system power supply voltage, the second terminal of the conduction control circuit is electrically connected to the front panel control terminal of the display driver circuit, and the third terminal of the conduction control circuit is electrically connected to the second terminal of the IPX interface circuit. The third terminal of the IPX interface circuit is electrically connected to the video signal output terminal of the display driver circuit; the output terminal of the video signal output circuit is used to electrically connect to the display screen. The boost circuit is used to convert the first system power supply voltage into a fifth power supply voltage and provide the fifth power supply voltage to the IPX interface circuit; The conduction control circuit is used to provide the second system power supply voltage to the IPX interface circuit when the received activation control signal is a preset control signal; The IPX interface circuit is used to project the video output signal onto the display screen.

8. The display control circuit according to any one of claims 1-6, characterized in that, The display control circuit further includes a button control circuit, wherein: The I / O terminal of the button control circuit is electrically connected to the I / O terminal of the display driver circuit. The button control circuit is used to output button control signals to the display driving circuit; the button control signals are used to control the display driving circuit.

9. The display control circuit according to any one of claims 1-6, characterized in that, The display control circuit also includes an audio signal output circuit, wherein: The audio receiving end of the audio signal output circuit is electrically connected to the audio transmission end of the display driving circuit, and the audio output end of the audio signal output circuit is used to electrically connect to an audio playback device. The display driving circuit is also used to transmit audio output signals to the audio signal output circuit; The audio signal output circuit is used to drive the audio playback device to play audio based on the audio output signal.

10. A display device, characterized in that, The display device includes a device body and a display control circuit as described in any one of claims 1-9.

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