WO2021223460A1 - Machine core main board and display device - Google Patents

Abstract

Disclosed in the present application are a machine core main board and a display device. The machine core main board is electrically connected to the display screen, and the machine core main board comprises: an output interface, the output interface comprising a reserved port; a detection circuit, configured to detect the level of the reserved port when the display screen is electrically connected to the machine core main board; and a signal output module, electrically connected to the detection circuit, and outputting, according to a level signal detected by the detection circuit, an image signal having a corresponding resolution to the display screen.

Description

Movement main board and display device

This application claims the priority of the Chinese patent application filed on May 8, 2020, with the application number 202020752023.9, titled "Movement Main Board and Display Device", which is hereby incorporated by reference in its entirety.

Technical field

This application relates to the field of display technology, and in particular to a core motherboard and a display device using the core motherboard.

Background technique

At present, the mainboard of high-end TVs can support image signal output with at least two resolutions, but the mainboard of the TV cannot automatically recognize display screens of different resolutions, and therefore cannot output image signals corresponding to the resolution of the display screen. During development and maintenance, it is easy to cause higher costs. For example, when developing the core motherboard of a high-resolution TV, the default image signal output by the core motherboard is a high-resolution image signal, so it must be equipped with a high-resolution display; accordingly, the high-resolution TV When troubleshooting, another high-resolution display must be prepared to detect whether the TV failure is a malfunction of the core motherboard or a malfunction of the display, so the cost of development and maintenance is relatively high.

technical problem

The main purpose of this application is to provide a core motherboard, which automatically recognizes display screens of different resolutions through the core motherboard and outputs image signals corresponding to the resolution of the display screen, so as to achieve cost-saving effects.

Technical solutions

In order to achieve the above-mentioned purpose, the main board of the movement proposed in this application is electrically connected to the display screen, and the main board of the movement includes:

An output interface, the output interface includes a reserved port;

A detection circuit for detecting the level of the reserved port when the display screen is electrically connected to the main board of the movement; and

The signal output module is electrically connected to the detection circuit, and outputs an image signal of corresponding resolution to the display screen according to the level signal detected by the detection circuit.

In an embodiment, the level signal detected by the detection circuit includes a high level and a low level; when the detection circuit detects that the level signal of the reserved port is a high level, the signal output module Output the image signal of the first resolution to the display screen; when the detection circuit detects that the level signal of the reserved port is low, the signal output module outputs the second resolution to the display screen The image signal; the second resolution is higher than the first resolution.

In one embodiment, the main board of the movement further includes a voltage divider circuit, and the output terminal of the voltage divider circuit is connected to the reserved port; wherein, the display screen includes a first display screen and a second display screen. The resolution of the second display screen is higher than that of the first display screen; the input interface corresponding to the second display screen and the reserved port is provided with a voltage divider module. When the first display screen is plugged in, the reserved port outputs a high-level signal; when the main board of the movement is plugged into the second display screen, the voltage divider circuit is electrically connected to the voltage divider module , The reserved port outputs a low-level signal.

In one embodiment, the output interface includes a first output interface and at least one second output interface, the second output interface includes the reserved interface, and the first output interface is used for the first display screen. Plugging, the first output interface and the second output interface are used together for the plugging of the second display screen, and the input interface corresponding to the second display screen and the second output interface is provided with a voltage divider Module; wherein, when the main board of the movement is plugged into the first display screen, the reserved port outputs a high-level signal; when the main board of the movement is plugged into the second display screen, the The voltage dividing circuit is electrically connected to the voltage dividing module, and the reserved port outputs a low-level signal.

In an embodiment, the voltage divider circuit includes a DC power supply, a first resistor, and a second resistor. The first resistor and the second resistor are connected in series between the DC power supply and the ground, and the The reserved port is connected to the connection point between the first resistor and the second resistor; the voltage divider module further includes a third resistor, one end of the third resistor corresponding to the second display screen The input interface of the second output interface is connected, and the other end of the third resistor is grounded; when the main board of the movement is plugged into the second display screen, the third resistor is connected in parallel with the second resistor .

In one embodiment, the second output interface is an 80pin interface.

In one embodiment, the second output interface is a 96pin interface.

In an embodiment, the image signal of the first resolution is a 4K signal, and the image signal of the second resolution is an 8K signal.

The present application also proposes a display device, which includes the above-mentioned main board of the movement.

Beneficial effect

The technical solution of the present application uses a reserved port at the output interface of the main board of the movement, and detects the level signal of the reserved port when the main board of the movement is connected to the display screen, thereby identifying display screens of different resolutions, and selectively Output the image signal of the corresponding resolution. Therefore, during the development and maintenance of the core motherboard, there is no need to equip the display screen corresponding to the default output resolution of the core motherboard. The low-resolution display can also be used for the core motherboard of the high-end TV. Development and maintenance, so you can save costs.

Description of the drawings

In order to more clearly describe the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only These are some embodiments of the present application. For those of ordinary skill in the art, without creative work, other drawings can be obtained based on the structure shown in these drawings.

FIG. 1 is a schematic circuit diagram of an embodiment of the main board of the core of the application;

FIG. 2 is a schematic structural diagram of a display device including the main board of the movement in FIG. 1.

Attached icon number description:

Label	name	Label	name
100	Display device	10	Movement motherboard
11	Output Interface	111	Reserved port
11a	The first output interface	11b	Second output interface
15	Detection circuit	17	Signal output module
19	Voltage divider circuit	191	DC power supply
30	Display screen	31	First display
311	The first input interface	33	Second display
331 (311)	The first input interface	333	Second input interface
335	Voltage divider circuit	R1	First resistance
R2	Second resistance	R3	Third resistance
A	Signal line	To	To

The realization, functional characteristics, and advantages of the purpose of this application will be further described in conjunction with the embodiments and with reference to the accompanying drawings.

Embodiments of the present invention

The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of this application.

It should be noted that all directional indicators (such as up, down, left, right, front, back...) in the embodiments of this application are only used to explain the difference between components in a specific posture (as shown in the accompanying drawings). If the relative position relationship, movement situation, etc. change, the directional indication will change accordingly.

In this application, unless otherwise clearly specified and limited, the terms "connected", "fixed", etc. should be understood in a broad sense. For example, "fixed" can be a fixed connection, a detachable connection, or a whole; It is a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal communication between two components or the interaction relationship between two components, unless specifically defined otherwise. For those of ordinary skill in the art, the specific meanings of the above-mentioned terms in this application can be understood according to specific circumstances.

In addition, the descriptions related to "first", "second", etc. in this application are only for descriptive purposes, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined with "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on what can be achieved by a person of ordinary skill in the art. When the combination of technical solutions is contradictory or cannot be achieved, it should be considered that such a combination of technical solutions does not exist. , Is not within the scope of protection required by this application.

This application proposes a core main board 10.

1 and 2, in the embodiment of the present application, the movement main board 10 is electrically connected to the display screen 30, and the movement main board 10 includes:

The output interface 11, the output interface 11 includes a reserved port 111;

The detection circuit 15 is used to detect the level of the reserved port 111 when the display screen 30 is electrically connected to the main board 10 of the movement; and

The signal output module 17 is electrically connected to the detection circuit 15 and outputs an image signal of corresponding resolution to the display screen 30 according to the level signal detected by the detection circuit 15.

The core motherboard 10 of the present application is used as an image signal output system for outputting image signals to the display screen 30 when it is electrically connected to the display screen 30. The core motherboard 10 may include a chip module, a logic circuit module, a power supply module, and connection modules. The circuit connection of the module, the main board 10 of the movement can support the output of image signals of multiple resolutions, and the display screen 30 can be a liquid crystal display, including a corresponding liquid crystal polymer layer and a front frame and other structures. The signal line A electrically connected between the main board 10 of the movement and the display screen 30 may be an FFC (Flexible Flat Cable, flexible flat cable) flexible flat cable.

The technical solution of the present application adopts the provision of a reserved port 111 at the output interface 11 of the main board 10 of the movement, and detects the level signal of the reserved port 111 when the main board 10 of the movement is connected to the display screen 30, thereby identifying displays with different resolutions. Screen 30, and selectively output image signals of corresponding resolution. Among them, the output interface 11 may include multiple pin angles, and the reserved port 111 may be a certain pin angle or several pin angles; the mapping of different level signals and output image signal resolutions can be pre-stored in the main board 10 of the movement Relationship, according to the level signal detected when the movement main board 10 and the display screen 30 are plugged in, the signal output module 17 outputs the image signal of the corresponding resolution, and the image signal of the corresponding resolution is output from the movement main board 10 through the signal line A. The interface 11 outputs to the display screen 30. Therefore, during the development and maintenance of the movement mainboard 10, there is no need to equip the display screen corresponding to the default output resolution of the movement mainboard 10. The low-resolution display can also be used for the development and maintenance of the movement mainboard 10 of the high-end TV, saving Cost.

Specifically, the level signal detected by the detection circuit 15 includes a high level and a low level; when the detection circuit 15 detects that the level signal of the reserved port 111 is high, the signal output module 17 outputs the first signal to the display screen 30. Resolution image signal; when the detection circuit 15 detects that the level signal of the reserved port 111 is low, the signal output module 17 outputs the image signal of the second resolution to the display screen 30; the second resolution is higher than the first Resolution. By setting a reference level, the level signal detected by the detection circuit 15 is compared with the reference level, and the detected level signal is divided into high level or low level, so as to identify two display screens with different resolutions. .

Further, the main board 10 of the movement further includes a voltage divider circuit 19, and the output terminal of the voltage divider circuit 19 is connected to the reserved port 111; the display screen 30 includes a first display screen 31 or a second display screen 33, and the resolution of the second display screen is 33. The resolution is higher than that of the first display screen 31. For example, the first display screen 31 is a 4K display screen, and the second display screen 33 is an 8K display screen; Voltage module 335. When the main board 10 of the movement and the first display screen 31 are plugged in through the signal line A, the voltage value of the input terminal of the reserved port 111 only corresponds to the voltage value of the output terminal of the voltage divider circuit 19, and the reserved port 111 outputs High-level signal; when the movement main board 10 and the second display screen 33 are plugged in through the signal line A, the signal line A not only realizes the electrical connection between the movement main board 10 and the second display screen 33, but also realizes the machine The voltage divider circuit 19 on the core main board 10 is electrically connected to the voltage divider module 335 on the second display screen 33. The voltage divider circuit 19 and the voltage divider module 335 are electrically connected to change the input voltage of the reserved port 111, so that the preset The port 111 outputs a low-level signal.

Specifically, the output interface 11 includes a first output interface 11a and at least one second output interface 11b. The second output interface 11b includes a reserved interface 111. The first output interface 11a is for plugging in the first display screen 31. The interface 11a and the second output interface 11b are used to plug the second display screen 33 together. The second display screen 33 is provided with a voltage divider module 335 at the input interface corresponding to the second output interface 11b; When plugged into the first display screen 31, the reserved port 111 outputs a high-level signal; when the movement main board 10 is plugged into the second display screen 33, the voltage divider circuit 19 is electrically connected to the voltage divider module 335, and the port is reserved 111 outputs a low-level signal.

In this embodiment, the first display screen 31 may include a first input interface 311 corresponding to the first output interface 11a, and the second display screen 33 may include a first input interface corresponding to the first output interface 11a of the main board 10 of the movement. The interface 331 (311) and the second input interface 333 corresponding to the second output interface 11b of the movement main board 10; the first output interface 11a of the movement main board 10 and the first input interface 311 of the first display screen 31 pass through a signal line When A is electrically connected, the second output interface 11b of the movement main board 10 is in an idle state, that is, the first display screen 31 does not have a corresponding input interface electrically connected to the second output interface 11b on the movement main board 10, so the voltage divider circuit 19 Not electrically connected to the voltage divider module 335, the voltage value of the reserved port 111 only corresponds to the voltage value of the output terminal of the voltage divider circuit 19; the second display screen 33 includes two interfaces, namely the first input interface 331 (311) and the first input interface 331 (311) and the The second input interface 333, that is, both the first display screen 31 and the second display screen 33 have a first input interface 331 (311), the first output interface 11a of the movement main board 10 and the first input interface of the second display 33 331 is connected through a signal line A, and the second output interface 11b and the second input interface 333 are connected through another signal line A. At this time, the signal line A connection also realizes the reserved port 111 of the main board 10 and the second The voltage divider module 335 of the display screen 33 is turned on. Because the output end of the voltage divider circuit 19 is electrically connected to the reserved port 111, the voltage divider circuit 19 of the movement main board 10 and the voltage divider module 335 of the second display screen 33 are electrically connected. Electrically connected, the voltage value of the reserved port 111 changes due to the electrical connection between the voltage divider circuit 19 and the voltage divider module 335, so that the reserved port 111 outputs a low-level signal.

Specifically, the voltage divider circuit 19 includes a DC power source 191, a first resistor R1 and a second resistor R2. The first resistor R1 and the second resistor R2 are connected in series between the DC power source 191 and the ground, and the reserved port 111 and the second resistor R2 are connected in series. The connection point between a resistor R1 and the second resistor R2 is connected, that is, the current flows from the DC power supply 191 through the first resistor R1 and the second resistor R2 in turn. The end of the second resistor R2 away from the first resistor R1 is grounded, so it is reserved The voltage value of the port 111 is the output voltage value of the DC power supply 191 minus the voltage value corresponding to the first resistor R1. The voltage divider module 335 includes a third resistor R3, one end of the third resistor R3 is connected to the input interface of the second display screen 33 corresponding to the second output interface 11b, and the other end of the third resistor R3 is grounded. When the main board 10 of the movement is plugged into the second display screen 33, the third resistor R3 and the second resistor R2 are connected in parallel.

In this embodiment, the first display screen 31 may include a first input interface 311 corresponding to the first output interface 11a, and the second display screen 33 may include a first input interface corresponding to the first output interface 11a of the main board 10 of the movement. The interface 331 (311) and the second input interface 333 corresponding to the second output interface 11b of the main board 10 of the movement. When the first output interface 11a and the first input interface 331, and the second output interface 11b and the second input interface 333 are respectively electrically connected through the signal line A, the voltage divider circuit 19 and the voltage divider module 335 are electrically connected due to the signal line A, Therefore, at this time, the second resistor R2 and the third resistor R3 are connected in parallel, and the resistance value of the second resistor R2 and the third resistor R3 after being connected in parallel is smaller than the resistance value of the second resistor R2. When the output voltage value of the DC power supply 191 does not change, the voltage value corresponding to the first resistor R1 increases, so the voltage value of the reserved port 111 decreases, which appears to output a low-level signal. Taking the first resistor R1, the second resistor R2, and the third resistor R3 as an example, the resistance values of the first resistor R1, the second resistor R2, and the third resistor R3 are respectively 1 ohm, 1 ohm, and 1 ohm, and the output voltage value of the DC power supply 191 is 3 volts. When the module 335 is electrically connected, the voltage value corresponding to the first resistor R1 is 1.5 volts, and the voltage value of the reserved port 111 is the voltage value output by the DC power supply 191 minus the voltage value corresponding to the first resistor R1, that is, the voltage value of the reserved port 111 The voltage value is 1.5 volts, which is a high-level signal by default; when the voltage divider circuit 19 and the voltage divider module 335 are electrically connected through the signal line A, the parallel resistance of the second resistor R2 and the third resistor R3 is 0.5 ohm , The voltage value corresponding to the first resistor R1 is 2 volts, and the voltage value of the reserved port 111 is 1 volt. Compared with when the voltage divider circuit 19 is not electrically connected to the voltage divider module 335, the voltage value of the reserved port 111 is different When it falls, the reserved port 111 outputs a low-level signal.

Further, when the first resolution image signal is a 4K signal, the first display screen 31 is a 4K display screen; when the second resolution image signal is an 8K signal, the second display screen 33 is an 8K display screen. The core motherboard 10 has three interfaces, namely 51pin interface, 80pin interface and 96 interface. The first output interface 11a is the 51pin interface, and the second output interface 11b is the 80pin interface or 96pin interface. Correspondingly, the first display 31 and the second display The input interface of the display screen 33 corresponds to it. The 80pin interface or the 96pin interface is provided with a reserved port 111 to detect the level signal of the reserved port 111, and both can realize the identification of the display screen of different resolutions by the main board 10 of the movement.

This application also proposes a display device 100. The display device 100 includes a main board 10 of the movement. The specific structure of the main board 10 of the movement refers to the above-mentioned embodiment. Since the present display device 100 adopts all the technical solutions of all the above-mentioned embodiments, It has at least all the beneficial effects brought about by the technical solutions of the above-mentioned embodiments, and will not be repeated here.

The foregoing descriptions are only optional embodiments of the application, and do not limit the scope of the patent for this application. Under the inventive concept of the application, any equivalent structural transformation made by using the content of the specification and drawings of the application, or direct/indirect Applications in other related technical fields are included in the scope of patent protection of this application.

Claims (16)

1. A movement main board, wherein, electrically connected to the display screen, the movement main board includes:

   An output interface, the output interface includes a reserved port;

   A detection circuit for detecting the level of the reserved port when the display screen is electrically connected to the main board of the movement; and

   The signal output module is electrically connected to the detection circuit, and outputs an image signal of corresponding resolution to the display screen according to the level signal detected by the detection circuit.
2. The core board of claim 1, wherein the level signal detected by the detection circuit includes a high level and a low level; when the detection circuit detects that the level signal of the reserved port is a high level Usually, the signal output module outputs the image signal of the first resolution to the display screen; when the detection circuit detects that the level signal of the reserved port is low, the signal output module sends the signal to the The display screen outputs an image signal of a second resolution; the second resolution is higher than the first resolution.
3. The movement main board of claim 2, wherein the movement main board further comprises a voltage divider circuit, and the output end of the voltage divider circuit is connected to the reserved port; wherein, the display screen comprises a first display screen, The second display screen, the resolution of the second display screen is higher than the resolution of the first display screen; the input interface corresponding to the second display screen and the reserved port is provided with a voltage divider module, when When the main board of the movement is plugged into the first display screen, the reserved port outputs a high-level signal; when the main board of the movement is plugged into the second display screen, the voltage divider circuit and The voltage dividing module is electrically connected, and the reserved port outputs a low-level signal.
4. The core motherboard of claim 3, wherein the output interface includes a first output interface and at least one second output interface, the second output interface includes the reserved interface, and the first output interface is for The first display screen is plugged in, the first output interface and the second output interface are used together for the second display screen to be plugged in, and the second display screen corresponds to the second output interface. The input interface is provided with the voltage divider module; wherein, when the main board of the movement is plugged into the first display screen, the reserved port outputs a high-level signal; when the main board of the movement is connected to the first display When the second display screen is plugged in, the voltage dividing circuit is electrically connected to the voltage dividing module, and the reserved port outputs a low-level signal.
5. The core board of claim 4, wherein the voltage divider circuit includes a DC power supply, a first resistor, and a second resistor, and the first resistor and the second resistor are sequentially connected in series to the DC power supply and the second resistor. And the reserved port is connected to the connection point between the first resistor and the second resistor; the voltage divider module further includes a third resistor, one end of the third resistor is connected to the The input interface of the second display screen corresponding to the second output interface is connected, and the other end of the third resistor is grounded; when the main board of the movement is plugged into the second display screen, the third resistor It is connected in parallel with the second resistor.
6. 8. The core motherboard of claim 4, wherein the second output interface is an 80pin interface.
7. 8. The core motherboard of claim 4, wherein the second output interface is a 96pin interface.
8. 3. The core motherboard of claim 2, wherein the image signal of the first resolution is a 4K signal, and the image signal of the second resolution is an 8K signal.
9. A display device comprising the main board of the movement according to claim 1.
10. The display device of claim 9, wherein the level signal detected by the detection circuit includes a high level and a low level; when the detection circuit detects that the level signal of the reserved port is a high level , The signal output module outputs the image signal of the first resolution to the display screen; when the detection circuit detects that the level signal of the reserved port is low, the signal output module displays to the display The screen outputs an image signal of the second resolution; the second resolution is higher than the first resolution.
11. The display device according to claim 10, wherein the main board of the movement further comprises a voltage divider circuit, and the output terminal of the voltage divider circuit is connected to the reserved port; wherein, the display screen includes a first display screen, a second The second display screen, the resolution of the second display screen is higher than the resolution of the first display screen; the input interface corresponding to the second display screen and the reserved port is provided with a voltage divider module, when the When the main board of the movement is plugged into the first display screen, the reserved port outputs a high-level signal; when the main board of the movement is plugged into the second display screen, the voltage divider circuit is connected to the first display screen. The voltage dividing module is electrically connected, and the reserved port outputs a low-level signal.
12. The display device of claim 11, wherein the output interface includes a first output interface and at least one second output interface, the second output interface includes the reserved interface, and the first output interface is provided for The first display screen is plugged in, the first output interface and the second output interface are used to plug in the second display screen together, and the second display screen is connected to the second output interface. The input interface is provided with a voltage divider module; wherein, when the main board of the movement is plugged into the first display screen, the reserved port outputs a high-level signal; when the main board of the movement is connected to the second display When the display screen is plugged in, the voltage divider circuit is electrically connected to the voltage divider module, and the reserved port outputs a low-level signal.
13. The display device of claim 12, wherein the voltage divider circuit includes a DC power supply, a first resistor, and a second resistor, and the first resistor and the second resistor are sequentially connected in series to the DC power supply and ground. And the reserved port is connected to the connection point between the first resistor and the second resistor; the voltage divider module further includes a third resistor, one end of the third resistor is connected to the first resistor The input interface of the second display screen corresponding to the second output interface is connected, and the other end of the third resistor is grounded; when the main board of the movement is plugged into the second display screen, the third resistor is connected to the The second resistor is connected in parallel.
14. 11. The display device of claim 12, wherein the second output interface is an 80pin interface.
15. 11. The display device of claim 12, wherein the second output interface is a 96pin interface.
16. 11. The display device of claim 10, wherein the image signal of the first resolution is a 4K signal, and the image signal of the second resolution is an 8K signal.