CN109166538B - Control circuit of display panel and display device - Google Patents

Control circuit of display panel and display device Download PDF

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Publication number
CN109166538B
CN109166538B CN201811400611.XA CN201811400611A CN109166538B CN 109166538 B CN109166538 B CN 109166538B CN 201811400611 A CN201811400611 A CN 201811400611A CN 109166538 B CN109166538 B CN 109166538B
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CN
China
Prior art keywords
signal
backlight
circuit
display panel
light source
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CN201811400611.XA
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Chinese (zh)
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CN109166538A (en
Inventor
王智勇
孔意强
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Hefei Huike Jinyang Technology Co Ltd
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Hefei Huike Jinyang Technology Co Ltd
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Priority to CN201811400611.XA priority Critical patent/CN109166538B/en
Publication of CN109166538A publication Critical patent/CN109166538A/en
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    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/3406—Control of illumination source
    • G09G3/3413—Details of control of colour illumination sources
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/2092—Details of a display terminals using a flat panel, the details relating to the control arrangement of the display terminal and to the interfaces thereto
    • G09G3/2096—Details of the interface to the display terminal specific for a flat panel

Abstract

A control circuit of display panel and display device; the display panel includes: a decoding circuit, a backlight driving circuit, a dimming circuit, and a video signal transmission circuit; the decoding circuit is connected with the synchronous display signal and the video signal, and is used for decoding according to the synchronous display signal and the video signal to generate a backlight control signal, a switch control signal, a serial video signal and a differential video signal; the backlight driving circuit is arranged to control the backlight to be started or stopped according to the switch control signal and to control the light emitting effect of the backlight according to the backlight control signal; the video signal transmission circuit is configured to transmit a serial video signal and a differential video signal; the control circuit of the display panel can transmit different types of video signals, has strong compatibility and low manufacturing cost; the defect that the display panel in the exemplary technology is low in compatibility and poor in picture display effect is overcome.

Description

Control circuit of display panel and display device
Technical Field
The application belongs to the technical field of display panel control, and particularly relates to a control circuit of a display panel and a display device.
Background
The display panel has been widely used in various industrial fields, for example, an electronic competition display panel, and in the practical application process, a user usually watches a game picture on the display panel, and the video display performance of the display panel greatly influences the use experience of the user; in addition, in consideration of the fact that the pictures of the electronic games are required to be clearer and more complete, compared with display panels in other industrial fields, the display panels are required to have more complete video display functions and data receiving functions, so that the electronic competition skills can completely meet the actual ornamental requirements of users.
However, the display panel in the conventional technology cannot access and recognize different types of video data, the update speed of the video data in the display panel is slow, and the display panel cannot display dynamic images/videos; the display panel can not simultaneously transmit a plurality of groups of video signals inside, or the display panel in the prior art needs to be provided with a plurality of signal transmission channels for respectively transmitting a plurality of groups of video signals, each signal transmission channel respectively transmits a group of video signals, the compatibility is lower, the signal transmission cost in the display panel is higher, the internal circuit structure is more complex, the use experience of a user is reduced, and the practical value of the display panel is not high.
Disclosure of Invention
The application provides a control circuit of a display panel and a display device, which comprise but are not limited to solving the following problems: in the exemplary technology, the display panel cannot be compatible with and connected to different types of video data, the picture display effect of the display panel is poor, and the dynamic sense is lacking; and the manufacturing cost of the display panel is higher, so that the visual experience of a user is reduced.
A first aspect of the present application provides a control circuit of a display panel, including:
the decoding circuit is connected with the synchronous display signal and the video signal and is used for generating a backlight control signal, a switch control signal, a serial video signal and a differential video signal according to the synchronous display signal and the video signal;
the backlight driving circuit is connected between the decoding circuit and the backlight source, and is used for controlling the backlight source to be started or stopped according to the switch control signal and controlling the light emitting effect of the backlight source according to the backlight control signal; and
and a video signal transmission circuit connected between the decoding circuit and a signal input port of the display panel, the video signal transmission circuit configured to transmit the serial video signal and the differential video signal.
In an embodiment, the decoding circuit is further arranged to generate a first light source control signal from the synchronous display signal and the video signal decoding;
the control circuit further includes:
the first light source driving circuit is connected between the decoding circuit and the full-color effect lamp and is used for adjusting the color and brightness of the light source of the full-color effect lamp according to the first light source control signal.
In one embodiment, the full-color effect lamp includes a three-color light source, wherein the three-color light source includes: red light source, green light source and blue light source.
In an embodiment, the decoding circuit is further arranged to generate a second light source control signal from the synchronized display signal and the video signal decoding;
the control circuit further includes:
the second light source driving circuit is connected between the decoding circuit and the projection lamp, and the second light source driving circuit adjusts the luminous effect of the projection lamp according to the second light source control signal.
In one embodiment, the backlight control signal is a pulse width modulation signal or a direct current dimming signal, and the backlight driving circuit is configured to:
When the backlight control signal is the pulse width control signal, the backlight driving circuit carries out pulse width modulation on the pulse width control signal to generate a pulse width modulation signal, and the light emitting effect of the backlight source is regulated through the pulse width modulation signal;
and when the backlight control signal is the direct current dimming signal, the backlight driving circuit performs direct current conversion on the direct current dimming signal to generate a direct current modulation signal, and the light emitting effect of the backlight source is regulated through the direct current modulation signal.
In one embodiment, the video signal transmission circuit includes:
and the serial signal transmission interface is connected between the decoding circuit and the serial signal input port of the display panel and is used for transmitting the serial video signal.
In one embodiment, the video signal transmission circuit further includes:
and the differential signal transmission interface is connected between the decoding circuit and the differential signal input port of the display panel and is used for transmitting the differential video signal.
In one embodiment, the video signal transmission circuit further includes:
And the digital signal interface is connected between the decoding circuit and the digital signal input port of the display panel and is used for transmitting the serial video signal and the differential video signal.
In one embodiment, the frequency of the synchronous display signal is 48Hz to 240Hz.
A second aspect of the present application provides a display device including:
a control circuit of the display panel as described above;
the signal input port of the display panel is connected with the control circuit, and the display panel displays images according to the serial video signals and the differential video signals;
the backlight source is arranged opposite to the display panel and connected with the backlight signal output port of the control circuit, and the backlight source changes the luminous effect according to the backlight signal
The full-color effect lamp is connected with the first control signal output end of the control circuit, and the color and the brightness of the light source are changed according to the first control signal; and
the projection lamp is connected with the second control signal output end of the control circuit, and the projection lamp changes the luminous effect according to the second control signal.
The control circuit of the display panel provided by the embodiment of the application can be compatible to access the synchronous display signal and the video signal through the decoding circuit, can control the video display state of the display panel through the synchronous display signal, can output video information to the display panel through the video signal, and can access high-capacity image data to display dynamic pictures in real time; the serial video signal and the differential video signal can be transmitted simultaneously through the video signal transmission circuit, and the display panel can be compatible for transmitting different types of video signals, so that the internal circuit structure is simplified; solves the defects of weak compatibility of display panels, high signal transmission cost and low user experience in the exemplary technology
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a block diagram of a control circuit of a display panel according to an embodiment of the present application;
Fig. 2 is a block diagram of a control circuit of another display panel according to an embodiment of the present application;
fig. 3 is a circuit configuration diagram of a first light source driving circuit according to an embodiment of the present application;
fig. 4 is a block diagram of a control circuit of another display panel according to an embodiment of the present application;
fig. 5 is a circuit configuration diagram of a second light source driving circuit according to an embodiment of the present application;
fig. 6 is a circuit configuration diagram of a backlight driving circuit according to an embodiment of the present application;
fig. 7 is a block diagram of a control circuit of another display panel according to an embodiment of the present application;
fig. 8 is a circuit configuration diagram of a differential signal transmission interface according to an embodiment of the present application;
fig. 9 is a block diagram of a control circuit of another display panel according to an embodiment of the present application;
fig. 10 is a block diagram of a display device according to an embodiment of the present application;
fig. 11 is a schematic plan view of a display device according to an embodiment of the present application;
fig. 12 is a schematic plan view of another display device according to an embodiment of the present application.
Detailed Description
The present application will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present application more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the application.
It is noted that when a circuit is referred to as being "fixed" or "disposed" on another circuit, it can be directly on the other circuit or be indirectly on the other circuit. When a circuit is referred to as being "connected" to another circuit, it can be directly or indirectly connected to the other circuit. The orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", etc. are based on the orientation or positional relationship shown in the drawings, are for convenience of description only, and do not indicate or imply that the apparatus or element in question must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the patent, and the specific meaning of the terms described above may be understood by those of ordinary skill in the art as appropriate. The terms "first," "second," and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features. The meaning of "a plurality of" is two or more, unless specifically defined otherwise.
Fig. 1 shows a block structure of a control circuit 10 of a display panel according to an embodiment of the present application, and for convenience of explanation, only a portion related to the embodiment of the present application is shown, as shown in fig. 1, the control circuit 10 includes: a decoding circuit 101, a backlight driving circuit 102, and a video signal transmission circuit 103; the control circuit 10 can control the video display state of the display panel, the control circuit 10 outputs the image data to the display panel, the display panel displays complete and dynamic images/videos according to the large-capacity image data, good visual experience is brought to a user, and the practical value of the display panel is improved; therefore, the control circuit 10 in the embodiment of the application can be applied to different types of display panels, such as electronic contest display panels, and has extremely high compatibility.
In order to embody the specific working principle of the control circuit 10 in the embodiment of the present application, an electronic bidding display panel is taken as an example herein, and the control circuit 10 is applied to the electronic bidding display panel, so as to describe a specific implementation of the control circuit 10; of course, since this is only an example, it is not a technical limitation of the control circuit 10 of the present application, and those skilled in the art can apply the control circuit 10 to various industrial fields without departing from the technical features of the present application, and this is not a limitation.
As shown in fig. 1, the decoding circuit 101 is connected to the synchronous display signal A1 and the video signal A2, and the decoding circuit 101 is configured to generate a backlight control signal A3, a switch control signal A4, a serial video (VBY 1) signal A5, and a differential video (Low Voltage Differential Signaling, LVDS) signal A6 according to the synchronous display signal A1 and the video signal A2.
The decoding circuit 101 can realize a signal decoding function to acquire circuit control information in a signal; the decoding circuit 101 is compatible to identify the synchronous display signal A1 and the video signal A2, wherein the synchronous display signal A1 contains video control information, so that the display panel can update image information in real time, support freesync (dynamic field synchronization), support HDR (high dynamic contrast), support MPRT (dynamic blur response time), and have a dynamic display effect; the video signal A2 contains a large amount of image data, the image data is output to the electronic contest display panel through the video signal A2, and the electronic contest display panel can display clear and complete video according to the image data, so that good visual experience is brought to a user; therefore, the electronic contest display panel in the embodiment can be simultaneously accessed with video control information and image data through the decoding circuit 101, so that the compatibility is extremely strong, the electronic contest display panel can be in a stable working state, and high-definition and complete pictures are displayed.
As an alternative embodiment, wherein the synchronous display signal A1 and the video signal A2 are generated by a mobile terminal; optionally, the mobile terminal is a tablet computer or a mobile phone, and the decoding circuit 101 is in wireless communication with an external mobile terminal to realize a data interaction function; the user can input a corresponding operation instruction into the mobile terminal, and the mobile terminal generates and outputs a synchronous display signal A1 and a video signal A2 according to the operation instruction so as to control the picture display state of the electronic contest display panel; in the embodiment of the application, a technician can directly control the working state of the electronic contest display panel through the mobile terminal, so that the operability of the electronic contest display panel is improved, and good use experience is brought to the technician; the control circuit 10 is in communication interconnection with an external mobile terminal through the decoding circuit 101, so that the data interaction capability between the control circuit 10 and the mobile terminal is enhanced, and the control circuit 10 has higher flexibility and practical value.
A backlight driving circuit 102, the backlight driving circuit 102 is connected between the decoding circuit 101 and the backlight 20, the backlight driving circuit 102 is configured to control the backlight 20 to be turned on or off according to the switch control signal A4, and to control the light emitting effect of the backlight 20 according to the backlight control signal A3.
The backlight 20 can play a role in lighting in the electronic contest display panel, the lighting effect of the backlight 20 directly influences the visual effect of the electronic contest display panel, and if the lighting effect of the backlight 20 is changed, parameters such as the light source color, the brightness and the like of the electronic contest display panel are directly influenced; in the embodiment of the present application, when the decoding circuit 101 outputs the switch control signal A4 to the backlight driving circuit 102, the backlight driving circuit 102 can be in a working or stopping state by the switch control signal A4, so as to control the working state of the backlight 20; when the backlight driving circuit 102 is in a working state, the backlight source 20 can be driven to be in a light-emitting state by the backlight driving circuit 102, and the electronic contest display panel can normally display pictures; in contrast, if the backlight driving circuit 102 is not in the working state, the backlight 20 cannot emit light, and the electronic competition display panel is in the stop state, so the embodiment of the application makes the backlight 20 emit light or not emit light through the switch control signal; optionally, the backlight driving circuit 102 controls the backlight 20 to be turned on or off according to the level state of the switch control signal A4, and illustratively, when the switch control signal A4 is in the first level state, the backlight 20 emits a light source; when the switch control signal A4 is in the second level state, the backlight 20 does not emit light; the working state of the backlight source 20 can be changed through the level state of the switch control signal A4, the operation is simple and convenient, the backlight source 20 has extremely strong operability, and the control performance of the control circuit 10 is improved.
As an alternative embodiment, the first level state may be a high level state or a low level state, the second level state may be a high level state or a low level state, and the first level state and the second level state are phase-interleaved.
In the embodiment of the present application, when the decoding circuit 101 outputs the backlight control signal A3 to the backlight driving circuit 103, where the backlight control signal A3 includes control information of the backlight 20, if the backlight 20 is in a working state, the backlight driving circuit 103 can change the light source color and the light source brightness of the backlight 20 according to the backlight control signal A3, and the electronic contest display panel can display a picture without a color level, so that a good visual experience effect is brought to a user; the backlight driving circuit 103 changes the light emitting state of the backlight 20 according to the operation information of the user, so as to meet the visual requirement of the user, and improve the operability of the light emitting state of the backlight 20; meanwhile, the circuit module structure of the control circuit 10 is simplified, the circuit manufacturing cost of the control circuit 10 and the backlight driving cost of the electronic contest display panel are reduced, and the practical value is extremely high.
A video signal transmission circuit 103, the video signal transmission circuit 103 being connected between the decoding circuit 101 and a signal input port of the display panel 30, the video signal transmission circuit 103 being configured to transmit the serial video signal A5 and the differential video signal A6.
In the embodiment of the application, the video signal transmission circuit 103 has a signal transmission function, and different types of signals can be transmitted in a compatible manner through the video signal transmission 103, so that the signal transmission between the decoding circuit 101 and the display panel 30 is realized, and the compatibility of the control circuit 10 is greatly improved; in combination with the above, when the decoding circuit 101 implements the signal decoding function, the generated VBY signal A5 and the LVDS signal A6, the VBY signal A5 and the LVDS signal A6 have different signals and transmission rates, where the VBY signal A5 needs multiple signal transmission channels to transmit, the VBY signal can prevent the image data from being interfered by EMI (Electromagnetic Interference ), and the distortion degree of the VBY signal is low; the LVDS signal A6 can solve the time lag problem of the image data in the transmission process, the transmission rate of the LVDS signal is high, and the transmission cost of the image data can be saved; therefore, the VBY signal A5 and the LVDS signal A6 in the embodiment of the present application include image data, and when the video signal transmission circuit 103 outputs the VBY signal A5 and the LVDS signal A6 to the display panel 30, the signal input port of the display panel 30 can access the image data with large capacity in real time, and the display panel 30 displays a corresponding dynamic picture according to the image data, so that the picture quality of the electronic contest display panel is improved; therefore, the embodiment of the application can compatibly transmit the serial video signal A5 and the differential video signal A6 through the video signal transmission circuit 103, the signal transmission capability of the control circuit 10 is improved, the video signal transmission cost in the electronic contest display panel is lower, and the practical value of the electronic contest display panel is higher.
In the embodiment of the application, the control circuit 10 can realize communication interconnection with an external mobile terminal through the decoding circuit 101, the control circuit 10 can be compatible to access different types of image data, the wireless communication capability of the control circuit 10 is improved, and the electronic contest display panel can access high-capacity image data through synchronous display signals and video signals so as to display dynamic pictures and bring good visual experience to users; the backlight driving circuit 102 can control the light-emitting state of the backlight 20, so that the backlight driving cost of the backlight 20 is reduced, and the practical value is higher; the video signal transmission circuit 103 can compatibly transmit a plurality of groups of video signals, the display panel 30 can update the image data of the display panel in real time so as to present complete and clear pictures, and the video signal transmission cost of the electronic contest display panel is greatly reduced; the control circuit 10 in the embodiment of the application has higher compatibility, and effectively solves the problems that the electronic contest display panel in the exemplary technology cannot compatibly transmit different types of image data, the picture dynamic sense of the electronic contest display panel is poor, the transmission cost of video signals is high, and the user visual experience is poor.
As an alternative embodiment, the decoding circuit 101 comprises a decoding chip, for example, of the type: MST9U26Q1, wherein the communication pin of the decoding chip is the signal input end of the decoding circuit 101, and the signal input end of the decoding circuit 101 is used for accessing the synchronous display signal A1 and the video signal A2 to realize the data interaction function with the external mobile terminal; the signal output pin of the decoding chip is connected with the backlight driving circuit 102 and the video signal transmission circuit 103, and outputs a backlight control signal A3 and a switch control signal A4 to the backlight driving circuit 102 and outputs a VBY1 signal A5 and an LVDS signal A6 to the video signal transmission circuit 103 through the signal output pin of the decoding chip; the decoding chip in the embodiment of the application has complete functions and extremely strong compatibility of signal transmission, the decoding circuit 101 realizes the function of signal decoding through the decoding chip, ensures that the control circuit 10 can be in a normal and stable working state, and improves the image data receiving and processing capacity of the electronic contest display panel, and the electronic contest display panel can display dynamic and complete pictures according to the image data.
As an alternative implementation, fig. 2 shows a block structure of a control circuit 10 of another display panel provided by an embodiment of the present application, in fig. 2, the decoding circuit 101 is further configured to generate a first light source control signal A7 according to the synchronous display signal A1 and the video signal A2, and referring to the embodiment in fig. 1, the control circuit 10 in fig. 2 further includes a first light source driving circuit 201, where:
a first light source driving circuit 201, the first light source driving circuit 201 is connected between the decoding circuit 101 and the full-color effect lamp 40, and the first light source driving circuit 201 is configured to adjust the color and brightness of the light source of the full-color effect lamp 40 according to the first light source control signal A7.
In order to achieve better image vivid effect in the process of playing the electronic game, the embodiment of the application sends out a light source with color conversion through the full-color effect lamp 40, thereby bringing better visual experience to the user and increasing the sense of realism in the process of playing the electronic game; in the embodiment of the present application, the first light source driving circuit 201 controls the light source effect of the full-color effect lamp 40 according to the information in the first light source control signal A7, so that the flexibility is high; the first light source driving circuit 201 is used as an independent control device of the full-color effect lamp 40, that is, the light source control effect of the full-color effect lamp 40 is improved, so that the light source conversion of the full-color effect lamp 40 has higher dynamic sense and the control flexibility is higher; meanwhile, the driving cost of the full-color effect lamp 40 is reduced, the assembly and design of a circuit structure are facilitated, the application cost of the full-color effect lamp 40 is lower, and the application range and the practical value of the electronic contest display panel are improved.
As an alternative embodiment, the full-color effect lamp 40 includes a three-color light source, wherein the three-color light source includes: red light source, green light source and blue light source.
In the embodiment of the present application, the light source of the full-color effect lamp 40 includes three basic colors (red, green and blue), and by combining the three basic colors, light sources with different color levels can be formed, and the full-color effect lamp 40 can emit light sources with richer colors, so that a more real game experience is brought to the user; optionally, the full-color effect lamp 40 includes a plurality of serially connected LED (Light Emitting Diode ) lamps, and the first light source driving circuit 201 may enable the plurality of LED lamps to emit light sources with different color levels, and the different LEDs use serial communication, so that only the power line and the data line may drive the LED lamps to be in a light emitting state at the same time, thereby reducing the wiring cost of the first light source driving circuit 201, and the driving cost of the full-color effect lamp 40 is lower, and increasing the application range of the electronic competition display panel.
As an optional implementation manner, the first light source driving circuit 201 includes a first light source driving chip U1, where the model of the first light source driving chip U1 is HC89F003, and further the first light source driving circuit 201 in the embodiment of the present application adopts the first light source driving chip U1 to realize the light source control effect of the full-color effect lamp 40, and the circuit structure is simple; fig. 3 illustrates a specific circuit structure of the first light source driving circuit 201 according to the embodiment of the present application, and in fig. 3, the model number of the first light source driving chip U1 is HC89F003; as shown in fig. 3, the first light source driving circuit 201 includes: the first light source driving chip U1, the first connector U2, the first resistor R1, the second resistor R2, the third resistor R3, the fourth resistor R4, the fifth resistor R5, the sixth resistor R6, the seventh resistor R7, the eighth resistor R8, the ninth resistor R9, the tenth resistor R10, the eleventh resistor R11, the twelfth resistor R12, the first capacitor C1, and the second capacitor C2.
The P0.5 pin of the first light source driving chip U1 is connected with the first end of the third resistor R3, the P0.4 pin of the first light source driving chip U1 is connected with the first end of the fourth resistor R4, the second end of the fourth resistor R4 is connected with the first end of the first resistor R1, the P0.1 pin of the first light source driving chip U1 is connected with the first end of the fifth resistor R5, the second end of the fifth resistor R5 is connected with the first end of the second resistor R2, the second end of the third resistor R3, the second end of the first resistor R1 and the second end of the second resistor R2 are connected with the first direct current power supply V1 in a sharing mode, and optionally, the first direct current power supply V1 is a +5V direct current power supply; the GND pin of the first light source driving chip U1 is grounded, the VDD pin of the first light source driving chip U1, the first end of the first capacitor C1 and the first end of the second capacitor C2 are commonly connected to form a function trigger end of the first light source driving chip U1, the function trigger end of the first light source driving chip U1 is used for being connected with a function trigger signal, the first light source driving chip U1 can achieve corresponding circuit functions through the function trigger signal, and the first light source driving circuit 201 can achieve light source adjusting functions; the second end of the first capacitor C1 is grounded, the second end of the second capacitor C2 is grounded, the pins P2 and 3 of the first light source driving chip U1 are connected with the first end of the sixth resistor R6, the pins P2 and 4 of the first light source driving chip U1 are connected with the first end of the seventh resistor R7, the pins P2 and 5 of the first light source driving chip U1 are connected with the first end of the eighth resistor R8, the pins P2 and 6 of the first light source driving chip U1 are connected with the first end of the ninth resistor R9, the second end of the sixth resistor R6, the second end of the seventh resistor R7, the second end of the eighth resistor R8 and the second end of the ninth resistor R9 are signal input ends of the first light source driving circuit 201, and the signal input ends of the first light source driving circuit 201 are connected with the decoding circuit 101, and the signal input ends of the first light source driving circuit 201 are connected with the first light source control signal A7.
The first end of the tenth resistor R10 is connected with the P0.2 pin of the first light source driving chip U1, the first end of the twelfth resistor R12 is connected with the P0.3 pin of the first light source driving chip U1, the second end of the tenth resistor R10 and the first end of the eleventh resistor R11 are commonly connected with the first signal input end of the first connector U2, the second end of the eleventh resistor R11 and the second end of the twelfth resistor R12 are commonly connected with the second signal input end of the first connector U2, the connecting tube pin of the first connector U2 is grounded, and the signal output end of the first connector U2 is connected with the full-color effect lamp 40.
As an alternative embodiment, the first connector U2 is of the type: DIP05PM-2.0MM-HEADER, wherein the first connector U2 is capable of performing signal transfer, so that the signal can be rapidly transferred and a larger power can be maintained in the first light source driving circuit 201; the first light source driving chip U1 is connected with and recognizes the first light source control signal A7, the first light source driving chip U1 is connected with the full-color effect lamp 40 through the first connector U2, so that the first light source driving chip U1 can change the luminous effect of the full-color effect lamp 40 through the first connector U2, the color change of the electronic contest display panel is richer, and a user has better real experience in the process of playing an electronic game.
In the embodiment of the present application, the first light source driving circuit 201 can read the information in the first light source control signal A7 through the first light source driving chip U1, so that the first light source driving circuit 201 can change the color and brightness of the light source of the full-color effect lamp 40 in real time, the full-color effect lamp 40 can present light sources with different color levels, and further the light emitting effect of the full-color effect lamp 40 has good operability, and the electronic contest display panel has better use experience; therefore, the first light source driving circuit 201 in the embodiment of the application has a simplified circuit structure, has strong expandability, improves the picture display quality of the electronic contest display panel, simplifies the circuit structure of the control circuit 10 and the manufacturing cost thereof, and is beneficial to enhancing the compatibility of the control circuit 10.
As an alternative implementation, fig. 4 shows a block structure of a control circuit 10 of another display panel provided by an embodiment of the present application, in fig. 4, the decoding circuit 101 is further configured to generate a second light source control signal A8 according to the synchronous display signal A1 and the video signal A2, and referring to the embodiment in fig. 1, the control circuit 10 in fig. 4 further includes a second light source driving circuit 401, where:
The second light source driving circuit 401, the second light source driving circuit 401 is connected between the decoding circuit 101 and the projecting lamp 50, and the second light source driving circuit 401 adjusts the light emitting effect of the projecting lamp 50 according to the second light source control signal A8.
In the embodiment of the application, the light source emitted by the projection lamp 50 can decorate the picture effect of the electronic contest display panel, render the environment, enable the user to obtain more vivid picture effect in the game playing process, and improve the use experience of the user; after the decoding circuit 101 performs signal decoding on the synchronous display signal A1 and the video signal A2, the working state of the second light source driving circuit 401 is directly controlled by the second light source control signal A8, so that the second light source driving circuit 401 transmits control information to the projecting lamp 50 to change the brightness and color of the light source of the projecting lamp 50; when the pictures of the electronic contest display panel show different images/videos, the luminous state of the projection lamp 50 is also changed along with the picture change; therefore, the light source of the projecting lamp 50 in the embodiment of the application can enhance the dynamic sense of the picture of the electronic contest display panel, the second light source driving circuit 401 changes the light emitting effect of the projecting lamp 50 according to the video information, and the control circuit 10 has a more comprehensive light source control function, so that the control performance of the control circuit 10 is improved, and the electronic contest display panel can bring more realistic visual effect to users.
As an alternative implementation manner, fig. 5 shows a specific circuit structure of a second light source driving circuit 401 provided in an embodiment of the present application, and in fig. 5, the second light source driving circuit 401 includes: thirteenth resistor R13, fourteenth resistor R14, fifteenth resistor R15, sixteenth resistor R16, seventeenth resistor R17, eighteenth resistor R18, third capacitor C3, fourth capacitor C4, fifth capacitor C5, sixth capacitor C6, first switching tube M1, second switching tube M2, third switching tube M3, and second connector U3.
The first end of the thirteenth resistor R13 is connected to the second dc power supply V2, the first end of the fourteenth resistor R14 is connected to the third dc power supply V3, the first end of the fifteenth resistor R15 is connected to the fourth dc power supply V4, and the stable dc power is transmitted to the second light source driving circuit 401 through the second dc power supply V2, the third dc power supply V3 and the fourth dc power supply V4, so that each electronic component in the second light source driving circuit 401 is in a stable working state; optionally, the second dc power source V2 is a +3.3v dc power source, the third dc power source V3 is a +5v dc power source, the fourth dc power source V4 is a +10v dc power source, the second end of the thirteenth resistor R13, the second end of the fourteenth resistor R14, the second end of the fifteenth resistor R15, the first end of the eighteenth resistor R18, the first end of the fourth capacitor C4, the first conducting electrode of the second switching tube M2, and the first conducting electrode of the third switching tube M3 are commonly connected to the first conducting electrode of the first switching tube M1, the second conducting electrode of the first switching tube M1 is grounded, the first end of the seventeenth resistor R17 and the first end of the third capacitor C3 are commonly connected to the control electrode of the first switching tube M1, the second end of the seventeenth resistor R17 and the first end of the sixteenth resistor R16 are commonly connected to form the second light source driving circuit 401, the second light source driving circuit 401 is connected to the second light source driving circuit 401 through the second light source driving circuit 101; the on or off state of the first switching transistor M1 is changed by the second light source control signal A8, so that the second light source driving circuit 401 realizes a control function of the light emitting state of the projector lamp 50.
The second end of the eighteenth resistor R18, the second end of the fourth capacitor C4 and the control electrode of the second switching tube M2 are commonly connected to the control electrode of the third switching tube M3, the second conducting electrode of the second switching tube M2, the second conducting electrode of the third switching tube M3, the first end of the fifth capacitor C5 and the first end of the sixth capacitor C6 are commonly connected to the communication end of the second connector U3, the ground of the second connector U3 is grounded, the second connector U3 is in communication connection with the projecting lamp 50, and control information is output to the projecting lamp 50 through the second connector U3 to change the light emitting effect of the projecting lamp 50; the second terminal of the fifth capacitor C5 and the second terminal of the sixth capacitor C6 are commonly grounded.
As an alternative embodiment, the second connector U3 has a model number of: PH2.0-4AW; the control circuit 10 performs data interaction with the projecting lamp 50 through a second connector U3; when the decoding circuit 101 outputs the second light source control signal A8 to the second light source driving circuit 401, the second light source driving circuit 401 generates corresponding control information according to the second light source control signal A8, and transmits the control information to the projecting lamp 50 through the second connector U3, so as to change the light emitting effect of the projecting lamp 50, and promote the diversity and dynamic variability of the picture colors in the electronic contest display panel; the second light source driving circuit 401 improves the compatibility and control flexibility of the control circuit 10 in the embodiment of the application, and reduces the picture driving cost of the electronic contest display panel.
As an optional implementation manner, the first switching tube M1 is a triode, the second switching tube M2 is a MOS tube, and the third switching tube M3 is a MOS tube; in the circuit structure of the second light source driving circuit 401 in the present embodiment, the on or off states of the first switching tube M1, the second switching tube M2, and the third switching tube M3 can be controlled by the second light source control signal A8; when the first switching tube M1, the second switching tube M2 and the third switching tube M3 are respectively in different on or off states, the second light source driving circuit 401 can output different control information, and the light emitting effect of the projecting lamp 50 can be directly changed through the second light source driving circuit 401; therefore, the second light source driving circuit 401 in the embodiment of the present application has a flexible circuit structure, and has a fast response speed to the control of the projecting lamp 50, so that the color diversity of the electronic contest display panel can be improved by the light source emitted by the projecting lamp 50, the practical value of the control circuit 10 is higher, and the visual experience of the user in the game playing process is enhanced.
As an alternative embodiment, the backlight control signal A3 is a pulse width modulation signal or a dc dimming signal, and the backlight driving circuit 102 is configured to:
When the backlight control signal A3 is the pulse width control (Pulse Width Modulation, PWM) signal, the backlight driving circuit 102 performs pulse width modulation on the pulse width control signal to generate a pulse width modulation signal, and adjusts the light emitting effect of the backlight 20 by the pulse width modulation signal;
when the backlight control signal A3 is the Direct (dc) dimming signal, the backlight driving circuit 102 performs dc conversion on the dc dimming signal to generate a dc modulation signal, and adjusts the light emitting effect of the backlight 20 according to the dc modulation signal.
In this embodiment, the control circuit 10 can adopt any one of PWM modulation and DC dimming to change the light emitting effect of the backlight 20, the color and brightness of the light source of the backlight 20 have good adjustability, the picture of the electronic contest display panel can completely satisfy the visual requirement of people, and the compatibility of the control circuit 10 is improved.
Illustratively, the embodiment of the present application can change the working state of the backlight driving circuit 10 by the backlight control signal A3 generated by the decoding circuit 101 to adjust the light source parameters in the backlight 20; referring to the embodiment of fig. 1, if the backlight driving circuit 102 performs PWM dimming on the backlight 20 according to the PWM signal, the backlight driving circuit 10 outputs a pulse width modulation signal to the backlight 20, and since the pulse width modulation signal has different widths and frequencies, the pulse width modulation signal has different control information, so that the input power of the backlight 20 can be changed by the pulse width modulation signal, so that the input power of the backlight 20 is changed according to the widths and frequencies of the pulse width modulation signal, and the light emitting state of the backlight 20 is adjusted; if the backlight driving circuit 102 performs DC dimming on the backlight 20 according to the DC dimming signal, at this time, the backlight driving circuit 102 outputs a DC modulation signal to the backlight 20, and since the DC modulation signal has different magnitudes, when the magnitudes of the DC modulation signal change, the input power of the backlight 20 will also change, so that the light emitting state of the backlight 20 can be changed in real time through the magnitudes of the DC modulation signal, the control response speed is accelerated, and the light emitting state of the backlight 20 can be accurately controlled; therefore, the embodiment of the application can generate the PWM signal or the DC dimming signal through the decoding circuit 101 so as to realize PWM dimming or DC dimming on the backlight 20, and the backlight 20 can present light sources with different color levels, thereby greatly enhancing the flexibility of the control circuit 10 and increasing the application range of the electronic contest display panel.
As an alternative implementation manner, fig. 6 shows a specific circuit structure of the backlight driving circuit 102 provided by the embodiment of the present application, as shown in fig. 6, where the backlight driving circuit 102 includes: the backlight driving chip U4, the first inductor L1, the second inductor L2, the third inductor L3, the fourth inductor L4, the nineteenth resistor R19, the twenty-third resistor R20, the twenty-first resistor R21, the twenty-second resistor R22, the twenty-third resistor R23, the twenty-fourth resistor R24, the twenty-fifth resistor R25, the twenty-sixth resistor R26, the twenty-seventh resistor R27, the twenty-eighth resistor R28, the twenty-ninth resistor R29, the thirty-first resistor R30, the thirty-first resistor R31, the thirty-second resistor R32, the thirty-third resistor R33, the thirty-fourth resistor R34, the thirty-fifth resistor R35, the thirty-sixth resistor R36, the thirty-seventh resistor R37, the thirty-eighth resistor R38, the forty-first resistor R40, the forty-first resistor R41, the forty-second resistor R42, the forty-third resistor R43, the forty-fourth resistor R44, the seventeenth capacitor C7, the eighth capacitor C8, the ninth capacitor C9, the tenth capacitor C10, the eleventh capacitor C11, the seventeenth capacitor C12, the seventeenth capacitor C14, the seventeenth capacitor C18, the seventeenth capacitor C20, the seventeenth capacitor C18 and the seventeenth capacitor C20.
The first end of the seventh capacitor C7, the first end of the eighth capacitor C8, the first end of the nineteenth resistor R19, the first end of the first inductor L1, and the first end of the second inductor L2 are commonly connected to the fifth dc power supply V5; optionally, the fifth dc power V5 is a +2v or +5v dc power, and the stable dc power can be provided to the electronic components in the backlight driving circuit 102 by the fifth dc power V5, so that the backlight driving circuit 102 is in a stable working state, the control stability of the backlight driving circuit 102 to the backlight 20 is improved, and the backlight 20 can emit light sources with different color levels; the second end of the seventh capacitor C7 and the second end of the eighth capacitor C8 are commonly grounded to the ground GND.
The first end of the twentieth resistor R20 is a switching signal input end of the backlight driving circuit 102, the switching signal input end of the backlight driving circuit 102 is connected to the decoding circuit 101, wherein the switching signal input end of the backlight driving circuit 102 is connected to the switching control signal, the second end of the twentieth resistor R20 and the first end of the ninth capacitor C9 are commonly connected to the enable pin ENA of the backlight driving chip U4, the second end of the ninth capacitor C9 is grounded, when the enable pin ENA of the backlight driving chip U4 is connected to the switching control signal, the on/off control signal can control the working state of the backlight chip U4 so as to enable or disable the backlight 20, and when the switching control signal is in the first level state, the backlight 20 is connected to the power supply to emit a corresponding light source; when the switch control signal is in the second level state, the backlight 20 cannot be connected to the power supply, and the backlight 20 is in the stop state; therefore, the backlight driving chip U4 has excellent controllability for the backlight 20.
When the level modulation pin VCC of the backlight driving chip U4 is connected with the level modulation control signal, if the level modulation control signal appears, the backlight driving chip U4 can be in a stable working state so as to realize a normal circuit function, therefore, the working state of the backlight driving chip U4 can be directly changed through the level modulation control signal, the operation is simple and convenient, and the second end of the tenth capacitor C10 is grounded.
Wherein the level modulation control signal may be generated by a modulation control circuit in an exemplary technique, which is not limited thereto.
The second end of the nineteenth resistor R19 and the first end of the eleventh capacitor C11 are commonly connected to the voltage signal input pin VIN of the backlight driving chip U4, the second end of the eleventh capacitor C11 is grounded, the first end of the twenty second resistor R22 is a direct current dimming input end of the backlight driving circuit 102, the direct current dimming input end of the backlight driving circuit 102 is connected to the decoding circuit 101, the direct current dimming input end of the backlight driving circuit 102 is connected to the DC dimming signal, the backlight driving circuit 10 can realize the function of DC dimming through the DC dimming signal, and the adjustability of the light emitting state of the backlight 20 is improved; the second end of the twenty-second resistor R22 and the first end of the twelfth capacitor C12 are commonly connected to the first analog level input pin ADIM of the backlight driving chip U4, the second end of the twelfth capacitor C12 and the first end of the thirteenth capacitor C13 are commonly connected to the ground, the second end of the thirteenth capacitor C13 is connected to the first end of the twenty-third resistor R23, and the second end of the twenty-third resistor R23 is connected to the level compensation pin CMP of the backlight driving chip U4.
The first end of the twenty-fourth resistor R24 is a pulse width modulation input end of the backlight driving circuit 102, the pulse width modulation input end of the backlight driving circuit 102 is connected with the decoding circuit 101, the backlight driving circuit 102 is connected with a PWM signal through the pulse width modulation input end, the backlight driving circuit 102 can be driven by the PWM signal to realize a pulse width modulation function so as to change the color and the brightness of a light source of the backlight 20, the second end of the twenty-fourth resistor R24 and the first end of the fourteenth capacitor C14 are commonly connected with a second analog level input pin PWM of the backlight driving chip U4, and the second end of the fourteenth capacitor C14 is grounded; therefore, in the embodiment of the present application, when the decoding circuit 101 outputs the DC dimming signal or the PWM signal to the backlight driving chip U4, the backlight driving chip U4 can respectively implement the corresponding control function of the backlight 20, so that the compatibility is extremely strong, and the control cost of the picture in the electronic contest display panel is reduced.
The first end of the twenty-fifth resistor R25 is connected with a GATE control signal input pin GATE of the backlight driving chip U4, the first end of the twenty-sixth resistor R26 and the first end of the fifteenth capacitor C15 are commonly connected with a chip selection pin CS of the backlight driving chip U4, the on or off of an internal power supply of the backlight driving chip U4 can be controlled through the chip selection pin CS, the second end of the fifteenth capacitor C15 and the first end of the twenty-seventh resistor R27 are commonly connected with the ground, and the second end of the twenty-seventh resistor R27 is connected with a voltage stabilizing pin RI of the backlight driving chip U4; the second end of the twenty-fifth resistor R25 and the first end of the thirty-fifth resistor R35 are commonly connected to the control electrode of the fourth switching transistor M4.
The second end of the first inductor L1, the second end of the second inductor L2, the first end of the third inductor L3, the first end of the fourth inductor L4 and the first end of the sixteenth capacitor C16 are commonly connected to the first conducting electrode of the fourth switching tube M4, the second end of the sixteenth capacitor C16 is connected to the first end of the thirty-sixth resistor R36, the second end of the thirty-sixth resistor R36, the first end of the thirty-ninth resistor R39, the first end of the thirty-eighth resistor R38, the first end of the thirty-seventh resistor R37, the second end of the thirty-fifth resistor R35 and the second end of the twenty-sixth resistor R26 are commonly connected to the second conducting electrode of the fourth switching tube M4, the second end of the thirty-ninth resistor R39, the second end of the thirty-eighth resistor R38 and the second end of the thirty-seventh resistor R37 are commonly connected to ground.
The second end of the third inductor L3, the second end of the fourth inductor L4 and the anode of the first diode D1 are commonly connected to the anode of the second diode D2, the cathode of the first diode D1, the cathode of the second diode D2, the first end of the forty-third resistor R43, the first end of the eighteenth capacitor C18, the first end of the nineteenth capacitor C19, the first end of the twenty-first capacitor C20 and the first end of the twenty-first capacitor C21 are commonly connected to the first input and output end of the third connector U5, the second end of the twenty-first capacitor C20, the second end of the twenty-first capacitor C21, the first end of the twenty-third capacitor C23 are commonly connected to the first end of the twenty-second capacitor C22, the second end of the twenty-third capacitor C23, the second end of the eighteenth capacitor C18, the second end of the nineteenth capacitor C19, the first end of the forty-fourth resistor R44 and the seventeenth capacitor C17 are commonly connected to the first end of the seventeenth capacitor C17, the seventeenth capacitor C17 can be driven by the eight-second end of the forty-fourth capacitor C4, and the seventeenth chip can be driven by the voltage pins of the forty-fourth resistor R4 to the forty-fourth resistor R28, and the forty-fourth capacitor C can be prevented from being stably driven by the voltage pins of the back-fourth resistor R4 to drive the forty-chip to the eight chip to drive the voltage; the first end of the twenty-ninth resistor R29 and the first end of the thirty-ninth resistor R30 are commonly connected to the current setting pin ISET of the backlight driving chip U4, and the magnitude of the input current of the backlight 20 can be changed through the current setting pin ISET of the backlight driving chip U4 to control the light emitting effect of the backlight 20 in real time, and the second end of the twenty-ninth resistor R29 and the second end of the thirty-eighth resistor R30 are commonly connected to the ground.
The ground pin GND of the backlight driving chip U4 is grounded, the fourth dimming signal output pin LED4 of the backlight driving chip U4 is connected with the first end of the thirty-first resistor R31, the third dimming signal output pin LED3 of the backlight driving chip U4 is connected with the first end of the thirty-second resistor R32, the second dimming signal output pin LED2 of the backlight driving chip U4 is connected with the first end of the thirty-third resistor R33, the first dimming signal output pin LED1 of the backlight driving chip U4 is connected with the first end of the thirty-fourth resistor R34, the second end of the thirty-first resistor R31 and the first end of the fortieth resistor R40 are connected with the second input output end of the third connector U5 in a sharing way, the second end of the thirty-second resistor R32, the second end of the fortieth resistor R40 and the first end of the fortieth resistor R41 are connected with the third input output end of the third connector U5 in a sharing way, the second end of the thirty-third resistor R31, the second end of the forty-first resistor R41 and the first end of the forty-second resistor R42 are commonly connected to the fourth input/output end of the third connector U5, the second end of the forty-second resistor R42 and the second end of the thirty-fourth resistor R34 are commonly connected to the fifth input/output end of the third connector U5, and the third connector U5 is connected to the backlight 20, when the backlight driving chip U4 generates a pulse width modulation signal or a direct current modulation signal, the pulse width modulation signal or the direct current modulation signal can be output through the dimming signal output pins (the first dimming signal output pin LED1, the second dimming signal output pin LED2, the third dimming signal output pin LED3 and the fourth dimming signal output pin LED 4) of the backlight driving chip U4 to perform pulse width modulation and direct current modulation on the light emitting effect of the backlight 20, the image effect of the electronic contest display panel can be greatly improved through the light source emitted by the backlight source 20, and the backlight driving circuit 102 achieves an excellent control effect on the backlight source 20.
As an alternative embodiment, the model number of the backlight driving chip U4 is: OB3365C.
As an alternative embodiment, the third connector U5 is of the type: DIP7PX1X2.0MM-90.
In the embodiment of the application, the backlight driving circuit 102 realizes the PWM switching-on and DC dimming functions on the backlight 20 through the backlight driving chip U4, the decoding circuit 101 generates different types of backlight control signals A3 according to the operation information, when the backlight driving chip U4 is connected with the PWM signals or the DC dimming signals, the backlight driving chip U4 realizes signal communication with the backlight 20 through the third connector U5 so as to control the light emitting state of the backlight 20, so that the light emitting state of the backlight 20 can be correspondingly changed according to the operation information, the video display effect of the electronic contest display panel is improved, and good visual experience is brought to a user; therefore, the backlight driving circuit 102 in the embodiment has a simplified circuit structure, has an excellent control effect on the light emitting state of the backlight 20, and reduces the manufacturing cost and the design cost of the control circuit 10, the control circuit 10 has a stronger compatibility, and the frame of the electronic contest display panel has a better dynamic feel.
As an alternative implementation manner, fig. 7 shows a block structure of a control circuit 10 of another display panel provided in an embodiment of the present application, and as shown in fig. 7, the video signal transmission circuit 103 includes: a serial signal transmission interface 1031 and a differential signal transmission interface 1032, wherein:
A serial signal transmission interface 1031, the serial signal transmission interface 1031 being connected between the decoding circuit 101 and a serial signal input port of the display panel 30, the serial signal transmission interface 1031 being arranged to transmit the serial video signal A5.
Referring to the embodiment of fig. 1, since the serial video signal A5 includes a large amount of image data, and since the decoding circuit 101 and the display panel 30 cannot directly implement signal communication interconnection, the embodiment of the application implements a signal high-speed transmission process with a low error rate through the serial signal transmission interface 1031, which ensures signal quality of the serial video signal A5 in the transmission process, and the display panel 30 can receive complete image information through the serial video signal A5, so that the electronic contest display panel can present a clearer and complete picture.
As an alternative implementation, the serial signal transmission interface 1031 in the embodiment of the present application may be implemented using a serial transmission connector in an exemplary technology, where the serial transmission connector is of a model number: the serial transmission connector can realize the rapid transfer of the serial video signal A5, improves the transmission rate of the serial video signal A5 in the control circuit 10, avoids the error of image delay of the electronic contest display panel, and ensures the continuity and stability of pictures in the electronic contest display panel.
Wherein, differential signal transmission interface 1032, said differential signal transmission interface 1032 is connected between said decoding circuit 101 and the differential signal input port of said display panel 30, said differential signal transmission interface 1032 is configured to transmit said differential video signal A6.
In the embodiment of the application, the differential video signal A6 can output high-capacity image data to the display panel 30, so that the electronic contest display panel can update the internal image data in real time and present more dynamic pictures, therefore, the embodiment of the application realizes single-channel transmission of the differential video signal A6 through the differential signal transmission interface 1032, and the electronic contest display panel is connected with the differential video signal to realize wide-screen display, thereby reducing the signal transmission cost of the differential video signal in the control circuit 10 and being beneficial to improving the picture quality in the electronic contest display panel.
As an alternative implementation manner, fig. 8 shows a circuit structure of a differential signal transmission interface 1032 provided by an embodiment of the present application, and as shown in fig. 8, the differential signal transmission interface 1032 includes: twenty-first capacitor C24, twenty-fifth capacitor C25, forty-fifth resistor R45, forty-sixth resistor R46, forty-resistor R47, and forty-eighth resistor R48.
The first end of the twentieth capacitor C24 and the first end of the twenty-fifth capacitor C25 are signal input ends of the differential signal transmission interface 1032, the signal input ends of the differential signal transmission interface 1032 are connected with the decoding circuit 101, and the differential video signal A6 can be accessed through the signal input ends of the differential signal transmission interface 1032, so as to realize signal transmission between the differential signal transmission interface 1032 and the decoding circuit 101; the second end of the twenty-fifth capacitor C24, the first end of the forty-fifth resistor R45, the first end of the forty-sixth resistor R46, the second end of the twenty-fifth capacitor C25, the first end of the forty-seventh resistor R47, and the first end of the forty-eighth resistor R48 are signal output ends of the differential signal transmission interface 1032, wherein the signal output ends of the differential signal transmission interface 1032 are connected with the display panel 30, and further the differential video signal A6 can be output to the differential signal input port of the display panel 30 through the signal output ends of the differential signal transmission interface 1032, so that the display panel 30 can access image data in real time, and the picture quality in the electronic contest display panel is improved; the second end of the forty-fifth resistor R45 is connected with a sixth direct current power supply V6, and optionally, the sixth direct current power supply V6 is a +3.3V direct current power supply; the second end of the forty-sixth resistor R46 is grounded to GND, the second end of the forty-seventh resistor R47 is grounded, and the second end of the forty-eighth resistor R48 is connected to a seventh direct current power supply V7, and optionally, the seventh direct current power supply V7 is a +3.3V direct current power supply.
Therefore, in the embodiment of the present application, the differential signal transmission interface 1032 has a simplified circuit structure, so that the differential video signal A6 is rapidly transmitted, and the electronic contest display panel can display a complete video according to the differential video signal A6, thereby greatly reducing the transmission cost of the differential video signal in the control circuit 10, and bringing good use experience to users.
As an alternative implementation, fig. 9 shows a block structure of a control circuit 10 of another display panel provided by an embodiment of the present application, and referring to the embodiment of fig. 7, the frequency signal transmission circuit 103 in fig. 9 further includes a digitized signal (eDP) interface 1033, where:
a digitized signal interface 1033, said digitized signal interface 1033 being connected between said decoding circuitry 101 and a digitized signal input port of said display panel 30, said digitized signal interface 1033 being arranged to transmit said serial video signal A5 and said differential video signal A6.
In the embodiment of the application, the digital signal interface 1033 can be compatible with the serial video signal A5 and the differential video signal A6 at the same time, so that the compatibility and the signal transmission quality of the video signal transmission circuit 103 in the embodiment are greatly improved, the digital signal interface 1033 enables the video signal to have more signal transmission modes in the control circuit 10, the signal transmission cost is lower, the display panel 20 can always receive large-capacity image data, the picture safety and stability in the electronic competition display panel are ensured, and the control circuit 10 in the embodiment of the application has wider application range and higher practical value.
As an alternative embodiment, the digitized signal interface 1033 is implemented using a digital connector in an exemplary technology, where the digital connector is of the type: F1-RE41S-HF-J-R1500; the digital connector can realize signal transmission between the decoding circuit 101 and the display panel 30, has complete functions, can ensure the data integrity of the serial video signal A5 and the differential video signal A6 in the transmission process, improves the transmission efficiency of the video signals in the control circuit 10, and can display more dynamic and clear pictures so that the control circuit 10 has wider application range.
As an alternative embodiment, the frequency of the synchronous display signal A1 is 48Hz to 240Hz; furthermore, the decoding circuit 101 in the embodiment of the application can access different types of video information to realize corresponding decoding functions; optionally, the decoding circuit 101 stores a corresponding decoding algorithm, and the decoding operation of the synchronous display signal A1 and the video signal A2 is implemented by the decoding algorithm, and in this embodiment, the control circuit 10 can be compatible with and access to multiple types of image data through the decoding circuit 101, so that the communication compatibility is relatively strong, and the fast decoding operation can be performed on the video signal, so that the electronic contest display panel can synchronously display different pictures, and the color level variation of the pictures has higher operability and higher practical value.
Fig. 10 shows a block structure of a display device 100 according to an embodiment of the present application, and as shown in fig. 10, the display device 100 includes: a control circuit 10 for a display panel, a display panel 1001, a backlight 1002, a full-color effect lamp 1003, and a projector lamp 1004.
The display panel 1001, a signal input port of the display panel 100 is connected to the control circuit 10, and the display panel 10 displays images according to a serial video signal and a differential video signal.
And a backlight 1002, wherein the backlight 1002 is disposed opposite to the display panel 1001, the backlight 1002 is connected to a backlight signal output port of the control circuit 10, and the backlight 1002 changes a light emitting effect according to a backlight signal.
The full-color effect lamp 1003 is connected to the first control signal output terminal of the control circuit 10, and the full-color effect lamp 1003 changes the color and brightness of the light source according to the first control signal.
The projecting lamp 1004, the projecting lamp 1004 is connected to the second control signal output end of the control circuit 10, and the projecting lamp 1004 changes the light emitting effect according to the second control signal.
Since the display device 100 according to the embodiment of the present application corresponds to the control circuit 10 in fig. 1 to 9, the control manner and the working principle of each circuit module in the display device 100 according to the embodiment of the present application can refer to the embodiment of fig. 1 to 9, and will not be repeated here.
Meanwhile, in order to better illustrate the spatial structure of the display device 100 in the embodiment of the present application, fig. 11 and fig. 12 show schematic plan views of the display device 100 provided in the embodiment of the present application, as shown in fig. 11 and fig. 12, the projection lamp 1004 is located at the base of the display panel 1001, and the full-color effect lamp 1003 is located at the back of the display panel 1001, so that the embodiment of the present application can change the picture effect of the display device 100 by combining the full-color effect lamp 1003 and the projection lamp 1004.
In the embodiment of the application, the control circuit 10 outputs different video signals to the display panel 1001 according to the image information, so that the display device 100 can present different pictures, and thus the display device 100 in the embodiment of the application has good communication compatibility, can display dynamic pictures according to different types of image data, and reduces the signal transmission cost and the circuit manufacturing cost of the display device 100; meanwhile, the control circuit 10 can control the light emitting states of the full-color effect lamp 1003 and the projection lamp 1004 so that the picture of the display device 100 can present various colors, and the picture effect in the display device 100 can bring more realistic sense to the user, so that the user has the feeling of being personally on the scene in the game playing process, and the use experience of the user is greatly improved; the display device 100 in the embodiment of the application can be widely applied to various industrial fields, and effectively solves the problems that the display device 100 in the exemplary technology cannot be compatible with and connected to different types of video signals, the expandability of the internal circuit structure is low, the transmission cost of the video signals is high, the picture quality of an electronic competition display panel is poor, the visual experience of a user is poor, and the universal applicability is not realized.
In summary, the control circuit 10 of the display panel in the embodiment of the application can be compatible with and connected to different types of video signals, the compatibility and the expandability are strong, the video signals can be rapidly and efficiently transmitted in the control circuit 10, the electronic contest display panel can display dynamic pictures according to image data, the picture effect of the electronic contest display panel is improved, a user has better use experience in the process of playing an electronic game, and the reality and the third dimension are stronger; the control circuit 10 of the display panel in the embodiment of the application has complete functions and lower manufacturing cost, and plays an important positive promotion role in the development of electronic contest display technology in the field.
The above description is illustrative of the various embodiments of the application and is not intended to be limiting, but is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the application.

Claims (5)

1. A control circuit of a display panel, comprising:
the decoding circuit is connected with the synchronous display signal and the video signal, and is used for decoding according to the synchronous display signal and the video signal to generate a backlight control signal, a switch control signal, a serial video signal, a differential video signal, a first light source control signal and a second light source control signal;
The backlight driving circuit is connected between the decoding circuit and the backlight source, and is used for controlling the backlight source to be started or stopped according to the switch control signal and controlling the light emitting effect of the backlight source according to the backlight control signal; and
a video signal transmission circuit connected between the decoding circuit and a signal input port of a display panel, the video signal transmission circuit configured to transmit the serial video signal and the differential video signal;
the first light source driving circuit is connected between the decoding circuit and the full-color effect lamp and is used for adjusting the color and brightness of the light source of the full-color effect lamp according to the first light source control signal;
the second light source driving circuit is connected between the decoding circuit and the projection lamp, and adjusts the luminous effect of the projection lamp according to the second light source control signal;
the video signal transmission circuit includes:
a serial signal transmission interface connected between the decoding circuit and a serial signal input port of the display panel, the serial signal transmission interface configured to transmit the serial video signal;
A differential signal transmission interface connected between the decoding circuit and a differential signal input port of the display panel, the differential signal transmission interface configured to transmit the differential video signal;
and the digital signal interface is connected between the decoding circuit and the digital signal input port of the display panel and is used for transmitting the serial video signal and the differential video signal.
2. The control circuit of a display panel of claim 1, wherein the full-color effect lamp comprises a three-color light source, wherein the three-color light source comprises: red light source, green light source and blue light source.
3. The control circuit of the display panel according to claim 1, wherein the backlight control signal is a pulse width control signal or a direct current dimming signal, and the backlight driving circuit is configured to:
when the backlight control signal is the pulse width control signal, the backlight driving circuit carries out pulse width modulation on the pulse width control signal to generate a pulse width modulation signal, and the light emitting effect of the backlight source is regulated through the pulse width modulation signal;
And when the backlight control signal is the direct current dimming signal, the backlight driving circuit performs direct current conversion on the direct current dimming signal to generate a direct current modulation signal, and the light emitting effect of the backlight source is regulated through the direct current modulation signal.
4. The control circuit of claim 1, wherein the synchronous display signal has a frequency of 48Hz to 240Hz.
5. A display device, comprising:
the control circuit of a display panel according to any one of claims 1 to 4;
the signal input port of the display panel is connected with the control circuit, and the display panel displays images according to the serial video signals and the differential video signals;
the backlight source is arranged opposite to the display panel and connected with the backlight signal output port of the control circuit, and the backlight source changes the luminous effect according to the backlight signal
The full-color effect lamp is connected with the first control signal output end of the control circuit, and the color and the brightness of the light source are changed according to the first control signal; and
the projection lamp is connected with the second control signal output end of the control circuit, and the projection lamp changes the luminous effect according to the second control signal.
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