CN114554121A - Display device and control method of display device - Google Patents
Display device and control method of display device Download PDFInfo
- Publication number
- CN114554121A CN114554121A CN202111428618.4A CN202111428618A CN114554121A CN 114554121 A CN114554121 A CN 114554121A CN 202111428618 A CN202111428618 A CN 202111428618A CN 114554121 A CN114554121 A CN 114554121A
- Authority
- CN
- China
- Prior art keywords
- display screen
- driving
- display device
- video image
- time sequence
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 28
- 238000006243 chemical reaction Methods 0.000 claims abstract description 62
- 238000003860 storage Methods 0.000 claims description 16
- 238000012827 research and development Methods 0.000 abstract description 11
- 239000004973 liquid crystal related substance Substances 0.000 description 23
- 230000006870 function Effects 0.000 description 22
- 238000010586 diagram Methods 0.000 description 15
- 238000012545 processing Methods 0.000 description 12
- 238000012937 correction Methods 0.000 description 9
- 238000013461 design Methods 0.000 description 6
- 238000011161 development Methods 0.000 description 5
- 230000008859 change Effects 0.000 description 4
- 230000002093 peripheral effect Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000009467 reduction Effects 0.000 description 3
- 241001270131 Agaricus moelleri Species 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 238000004590 computer program Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000011664 signaling Effects 0.000 description 2
- 230000003044 adaptive effect Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002860 competitive effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 230000005236 sound signal Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Liquid Crystal Display Device Control (AREA)
Abstract
The application discloses display device and display device's control method belongs to and shows technical field, and display device includes: the display screen is used for displaying video images; the control panel is integrated with a main control circuit and a time sequence conversion circuit, the main control circuit is used for sending video image signals corresponding to video images to be displayed to the time sequence conversion circuit, and the time sequence conversion circuit is used for converting the video image signals into driving signals for driving the display screen; the adapter plate is integrated with a conversion circuit, the input end of the conversion circuit is electrically connected with the time sequence conversion circuit, the output end of the adapter plate is electrically connected with the display screen, and the conversion circuit is used for converting the voltage of the driving signal into a voltage matched with the working voltage of the display screen. The scheme provided by the embodiment of the application can shorten the research and development period of the whole television under the condition of replacing the display screen, and has economic benefit.
Description
Cross reference to related applications
The present application claims priority to chinese patent application having application number 202011348831.X, entitled "television and television control method", filed by the chinese patent office on 26/11/2020, which is incorporated herein by reference in its entirety.
Technical Field
The present application relates to the field of display technologies, and in particular, to a display device and a control method for a display device.
Background
As one of the display devices, the television industry is now competitive. The television comprises a power panel, a control panel, a logic panel and a liquid crystal display screen. The power panel is equivalent to a switch of the liquid crystal television. The control board is mainly used to help realize the main functions of the television, such as signal processing, image processing, sound processing, and the like, and output a control signal. The logic board, also called TCON board, is used to process the control signal output from the control board, and convert the control signal into the signal that can be recognized by the liquid crystal display screen so as to control the MOS tube in the screen to work, and finally realize the display of image data. Because the standards of the display screens produced by the display screen factories are inconsistent, the driving signals and the data arrangement formats required by the receiving chips of the display screens of different models are usually different, and therefore, when the display screens need to be replaced, the logic board and/or the control board often need to be redesigned and manufactured, which is very inconvenient.
Therefore, when the display screen needs to be replaced, how to shorten the development cycle of the whole television under the premise of considering both cost and flexibility is a technical problem which is always addressed by technical personnel in the field.
Disclosure of Invention
The application provides a display device, aims at under the condition of changing the display screen, under the prerequisite that satisfies cost and flexibility, shortens display device's research and development cycle.
According to an aspect of an embodiment of the present application, there is provided a display device including: the display screen is used for displaying video images; the display device comprises a control panel, a master control circuit and a time sequence conversion circuit, wherein the master control circuit is used for sending video image signals corresponding to video images to be displayed to the time sequence conversion circuit; the display screen comprises an adapter plate, wherein a conversion circuit is integrated on the adapter plate, the input end of the conversion circuit is electrically connected with a time sequence conversion circuit, the output end of the adapter plate is electrically connected with the display screen, and the conversion circuit is used for converting the voltage of a driving signal into a voltage matched with the working voltage of the display screen.
In one embodiment, the control board is further integrated with a storage module, and the storage module stores a plurality of display screen parameters corresponding to the display screen, wherein the display screen parameters include parameters corresponding to the display screen connected with the output end of the adapter board; the time sequence conversion circuit converts the video image signals into driving signals for driving the display screen according to the display screen parameters stored in the storage module, wherein the driving signals comprise control signals and time sequence video image signals, and the time sequence video image signals are video streams arranged according to time sequence.
In one embodiment, the interposer has a first input connector for connecting to an output of the control board and a second input connector that is an expansion connector.
In one embodiment, the patch panel also has a plurality of output connectors, wherein at least one of the output connectors is an expansion output connector.
In one embodiment, the output connector comprises a first output connector, the adapter board is electrically connected with the display screen through the first output connector, and the first output connector is provided with at least four pins for outputting driving signals so as to adapt to ports of various display screens for inputting the driving signals.
In one embodiment, the display device further comprises a power circuit electrically connected to the control board and the adapter board to supply power to the main control circuit, the timing conversion circuit and the adapter circuit, wherein the power circuit is integrated in the control board or exists separately.
According to another aspect of the embodiments of the present application, there is also provided a control method of a display apparatus, including: receiving a video image signal corresponding to a video image to be displayed; converting the video image signal into a driving signal for driving a display screen of the display device according to a set rule; the voltage of the driving signal is converted to be adapted to the operating voltage of the display screen.
In one embodiment, before converting the video image signal into a driving signal for driving a display screen of the display device according to the set rule, the method further comprises: acquiring a target model of a display screen; determining display screen parameters corresponding to the target model; and determining the set conversion rule according to the display screen parameters.
In one embodiment, converting a video image signal into a driving signal for driving a display screen of a display device according to a set rule includes: the video image signals are converted into driving signals for driving a display screen of the display device according to a set rule, the driving signals include control signals and time sequence video image signals, and the time sequence video image signals are video streams arranged according to time sequence.
Compared with the prior art, the method has the following beneficial effects: according to the application, a time sequence control circuit on an original logic board is integrated on a control board, the display screen is connected through an adapter plate, and only a voltage adjustment module is integrated on the adapter plate and used for converting the voltage of a driving signal into the voltage adapting with the working voltage of the display screen. Under the condition of changing the display screen, only need make the adjustment to the fishplate bar or only need change the fishplate bar, can accomplish the adaptation of new display screen and control panel, can realize shortening research and development cycle under the prerequisite of taking into account flexibility and cost from this.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and together with the description, serve to explain the principles of the application. It is obvious that the drawings in the following description are only some embodiments of the application, and that for a person skilled in the art, other drawings can be derived from them without inventive effort. In the drawings:
fig. 1 is a logic block diagram of a circuit driving system of a liquid crystal television according to the related art of the present application;
FIG. 2 is a schematic diagram showing the components of a logic board according to the related art;
FIG. 3a is a block diagram of a logic board corresponding to the first display screen;
FIG. 3b is a block diagram of a second display screen corresponding to the logic board;
FIG. 3c is a block diagram of a third display screen corresponding to a logic board;
fig. 4 is a functional logic block diagram one of a television provided according to an embodiment of the present application;
FIG. 5 is a schematic connection diagram of an interposer provided in an embodiment of the present application;
FIG. 6 is a second functional logic block diagram of an LCD TV in the embodiment of the present application;
fig. 7 is a schematic diagram of a board end line sequence of a first input connector of a patch panel according to an embodiment of the present application;
fig. 8 is a flowchart of a television control method according to an embodiment of the present application.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Rather, they are merely examples of the systems and methods of the present application as detailed in the appended claims.
For the sake of understanding, the display principle of the television will be described first, and the functional logic of the logic board circuit laid on the logic board will be mainly described.
Fig. 1 is a logic block diagram of a circuit driving system of a liquid crystal television in the related art of the present application. As shown in fig. 1, in the related art of the present application, a complete circuit driving system of a liquid crystal television includes three blocks, namely a control board, a power board and a liquid crystal module driving circuit.
The television is provided with a power panel, a control panel, a logic panel, a display screen driving board and a display screen.
The control panel is laid with a main control circuit to help the television to realize multiple functions, such as image processing and sound processing. The main control circuit receives video and audio signals input from the outside for decoding processing, and then inputs the signals to the logic board end of the liquid crystal module in a digital signal mode.
The power supply board is used for converting alternating voltage into various voltages suitable for control board and backlight driving.
The liquid crystal module comprises a logic board, a liquid crystal panel, a display screen driving board, a backlight source and a driving circuit thereof. The logic board is used for receiving the image signals output by the control board and performing row and column time sequence control driving on liquid crystal display based on pixel arrangement of the liquid crystal panel; according to the arrangement design of the LED lamps in the backlight source, the backlight source driving circuit carries out conversion of direct-current voltage. Fig. 2 is a schematic diagram of the composition of a logic board in the related art of the present application.
The logic board converts a data signal, a control signal, and a clock signal received from the outside into a data signal, a control signal, and a clock signal suitable for the data driving integrated circuit and the scan driving integrated circuit, thereby realizing image display of the liquid crystal panel.
The logic board is integrated with a logic board chip (TCON chip), a power management module, a gamma correction module, a level conversion module, and a first interface 301, a second interface 302, and a third interface 303. The first interface 301 is an input interface, and the logic board is connected with the control board through the first interface 301; the second interface 302 and the third interface 303 are output interfaces, and the logic board is connected with the display screen driving board through the second interface 302 and the third interface 303.
The sync signal input into the logic board has a clock signal (Mclk), a line sync signal (HS or Hsync), a field sync signal (VS or Vsync), and an Enable signal (Data Enable, DE). The control signals output by the logic board comprise control signals of an S-IC and a G-IC. The control signals of the S-IC include a Start Horizontal (STH) signal, a Clock Horizontal (CPH) signal, a data output signal (TP or Load), and a data polarity inversion signal (MPOL or POL). The control signals of the G-IC include a frame Start Signal (STV), a scan Clock Pulse signal (CPV), an enable signal 1(OutputEnable 1, OE1), and an enable signal (OutputEnable 2, OE 2).
The first interface 301 may be a Low Voltage Differential Signaling (LVDS) interface, an Embedded Display signal (eDP) interface, a Transistor-Transistor Logic (TTL) interface, a V-by-One interface, and the like. The interface types of the second interface 302 and the third interface 303 include a mini-LVDS interface, a TTL interface, an rsds (row Swing differential signaling) interface, and a Point-to-Point (Point-to-Point) interface.
The TCON chip is used to convert data signals, control signals, and clock signals received from the outside into data signals, control signals, and clock signals suitable for driving an IC (S-IC, G-IC), thereby implementing image display.
The display screen driving board is laid with a display screen driving circuit, the driving circuit comprises a source driving circuit and a grid driving circuit, the grid driving circuit has the main function that the transistors in a row on a liquid crystal panel are sequentially turned on, when the grid driving circuit sequentially turns on the transistors, the source driving circuit converts corresponding display data into voltage, and then the liquid crystal capacitor and the storage capacitor on the liquid crystal panel are charged and discharged to the voltage of the corresponding gray scale.
The power management module converts +12V or +5V provided by the power panel into voltage suitable for the display screen driving circuit, and provides the converted voltage to the logic board chip, the display screen driving board, the level conversion module and the gamma gray correction module.
The gamma gray correction module is used for adjusting the voltage of the driving signal according to the reference voltage provided by the power management module, so that the image viewed through the display screen corresponds to the image of the real world. Specifically, the different output voltages of the driving signals deflect the liquid crystal molecules of the liquid crystal panel by different angles, so that the intensity of the passing light is controlled, and different gray scales are generated. That is, different voltage values correspond to different gray scales, and the voltage value of the driving signal is adjusted according to the reference voltage, so that the video image displayed by the display screen is more beautiful and vivid.
The level conversion module is connected with the power management module, the logic board chip and the display screen driving board and used for increasing the driving voltage output to the display screen driving board by the logic board chip into the voltage capable of driving the driving signal required by the work of the display screen.
The above components cooperate with each other to realize the display of the video image on the display screen.
In the mainstream, the power panel, the control panel and the logic panel are designed in a three-panel discrete manner, wherein the logic panel is connected with the display screen, and the driving signals and the data arrangement formats required by the receiving chips of the display screens of different models are usually different due to different standards of the display screens produced by various display screen factories; when the power panel, the control panel and the logic panel adopt a combined design, namely a three-in-one mode, although the adopted parts are few, the cost is low, but the flexibility is poor. Specifically, for example, fig. 3a, fig. 3b and fig. 3c are respectively a board terminal line sequence of logic boards corresponding to three different display screens, as shown in fig. 3a, pins 2 to 13 of a logic board corresponding to a first display screen correspond to data signals, as shown in fig. 3b, pins 5 to 15 of a logic board corresponding to a second display screen correspond to voltage signals, as shown in fig. 3c, and pins 2 to 11 of a logic board corresponding to a third display screen correspond to voltage signals. It can be seen that the data arrangement required for different display screens is usually different from each other. When the display screen needs to be replaced, under the condition of three-in-one, the whole three-in-one plate needs to be redesigned and manufactured, the workload is large, the research and development period is long, the research and development cost is high, and the long research and development period can cause the produced television products to be in a disadvantage in competition. If the design is discrete, namely the power panel, the control panel and the logic panel are laid on the corresponding circuit boards respectively and interconnected through the wires, although the boards are physically easy to separate and have higher flexibility, the boards are provided with modules with repeated functions, so that more parts are adopted, and the manufacturing cost is higher.
The data arrangement modes required by the display screens provided by different display screen companies are usually different, and if the display screens need to be replaced, the whole logic board needs to be replaced usually, so that the new display screens and the control board are adapted, that is, the logic board chips of the logic boards, the level conversion module, the power management module, the gamma gray level correction module and the peripheral power supply circuits of all the modules need to be redesigned and manufactured, and many parts and components are needed, so that the research and development period is long when the display screens need to be replaced, and the cost is high.
Fig. 4 is a functional logic block diagram one of a television provided according to an embodiment of the present application; FIG. 5 is a schematic connection diagram of an interposer provided in an embodiment of the present application;
as shown in fig. 4-5, the television 100 includes at least a control board 101, a power board 102, an adapter board 103, and a display screen 104.
The control panel 101 is integrated with a main control circuit and a time sequence conversion circuit, the main control circuit receives video image signals input from the outside, processes the video image signals and outputs the video image signals to the time sequence conversion circuit, and the time sequence conversion circuit processes the video image signals and converts the video image signals into driving signals suitable for the display screen. Namely, the TCONIC and the peripheral circuit thereof are realized by the control board, the original logic board is transferred to the adapter board, and other functional modules of the logic board are reserved except the TCON IC and the peripheral circuit thereof.
The output end of the control panel inputs the converted driving signal to the adapter plate, and the adapter plate is integrated with a conversion circuit. The conversion circuit comprises a power management module, a gamma correction module and a level conversion module. The power management module provides working voltage signals for the conversion circuit and the liquid crystal display screen, the gamma correction module is used for providing analog reference voltage for the work of the display screen, and the level conversion module converts the voltage of the driving signals output by the sequential control circuit into driving signals required for driving the work of the display screen.
Therefore, the control panel and the adapter plate are physically easy to separate, and when the display screen needs to be replaced, whether the output end of the adapter plate is matched with the new display screen or not is determined at first. If the two are matched, the replacement can be directly carried out. If the voltage divider is not matched with the voltage divider, only the adapter plate needs to be replaced, or the adapter plate needs to be subjected to fine adjustment, for example, partial voltage dividing resistors on the adapter plate are replaced to change the output voltage. Therefore, the adapter plate can be very conveniently matched with a new display screen. Therefore, low cost and short period are realized, and the convenience of the whole machine assembly after the display screen is replaced is improved.
The television also comprises a power panel, the power panel is connected with the control panel and the adapter plate through wires and used for supplying power to the control panel and the power management module. In other embodiments, the power strip may also be integrated on the control board for cost reduction. And are not limited herein.
In one embodiment, the control board may further have a storage module for storing the display parameters, and since the display model generally includes a manufacturer code, a display size and a display serial number, the display parameters may be pointed through the display model. When the model of the new display screen is stored in the storage module of the control panel, the software setting is changed, and the format of the adaptive driving signal of the display screen is easily obtained according to the model of the display screen. The control panel, the adapter plate and the new display screen can be conveniently matched in software.
In another embodiment, the display screen parameters may also be customized. Illustratively, various display screens which are determined to be known can be identified by appointed numbers, for example, 1, 2, 3 … and corresponding software settings are carried out, and after the replacement of the display screen is completed, the display can be conveniently carried out on a new display screen by switching the number identification, which is very convenient.
The patch panel may have a first input connector and a second input connector, which may be in the form of a patch cord. In one embodiment, the first input connector is used for connecting the output end of the control board, the second input connector is an expansion connector, and correspondingly, the control board is also provided with a connecting mechanism matched with the second connector. Under the condition that new functions need to be expanded, the control board and the adapter board do not need to be redesigned and manufactured, and the expanded functional circuit is connected into the circuit through the expanded connector. Illustratively, the extended functional circuitry may include sensor circuitry, touch screen circuitry, audio circuitry, and the like. Therefore, new functions can be continuously expanded on the basis of the existing control panel and adapter plate, and the development of television products with new functions can be rapidly completed.
In some embodiments of the application, the adapter plate can be redesigned, the expanded new functions are integrated in the new adapter plate, and the newly designed adapter plate is connected with the control panel and the display screen, so that the function expansion of the whole television can be realized quickly, and the research and development period can be shortened.
In one embodiment, the adapter board may further have a plurality of output connectors, wherein at least one of the output connectors is an extended output connector, so that circuit expansion is conveniently completed on the basis of existing design without influence, and development of a television product with new functions is rapidly completed.
In one embodiment, the adapter board is connected with the display screen through the first output connector to transmit a driving signal for driving the display screen to work. There is a difference in input ports of driving signals due to various display panels. Illustratively, some of the driving signals required by the display screen include a start signal, two line control signals, and the like, and some of the driving signals required by the display screen include a start signal, a line control signal, a line switching signal, and the like. In order to adapt to the known kinds of display screens, the application provides at least four pins for transmitting the driving signals at the first output connector, and in one embodiment, 6 or more pins can be reserved to adapt to the input ports of the different display screens which may appear in the future. Therefore, after a new display screen is replaced, the whole machine can be assembled and debugged only by adjusting the software control method, and the research and development period is shortened.
In one embodiment, to improve the modularization and generalization, the timing conversion circuit can be packaged into a chip integrated in the control board.
Fig. 6 is a functional logic block diagram two of a television according to an embodiment of the present application.
As shown in fig. 6, in this embodiment, the television includes a control board (including a timing conversion circuit) 101, a power board 102, an adapter board 103, a display screen driving circuit 110, and a display screen 104. The adapter board 103 may include a power management module 107, a level conversion module 214, a gamma correction module 212, and a buck regulator module 108.
The power board 102 is laid with a power circuit, and the power circuit is connected with the power management module 107 on the adapter board 103 through a wire to provide a voltage signal of, for example, 12V to the power management module 107. To improve modularity and generalization, in one embodiment, power strip 102 may exist alone. In other embodiments, power strip 102 may also be integrated on the control board for cost reduction. And are not limited herein.
The control panel 101 is a core of the television operation, a main control circuit is integrated on the control panel 101, the main control circuit comprises a central processing unit, a memory, a display core, a storage, various chips and the like, and is used for helping the television to realize various functions such as signal processing, image processing, sound processing, instruction receiving, operation analysis and the like, and other functions can be realized by the main control circuit according to different components integrated on the control panel 101. Besides the main control circuit, the control board 101 is further integrated with a timing conversion circuit, and the timing conversion circuit mainly realizes the main function of the logic board chip in the related art of the present application, that is, is used for converting the timing of the video image signal received by the main control circuit and input from the outside into a driving signal adapted to the driving circuit of the display screen. The master control circuit may include a master control chip, and the timing conversion circuit may be integrated in the master control chip, and the master control chip may implement the timing conversion function. Specifically, after the main control chip receives the video image signal transmitted from the outside, the video image signal is decoded and time-sequence-converted, and finally a video stream arranged in time sequence is generated and transmitted to the adapter board 103 through the peripheral circuit of the main control chip.
The adapter board 103 is laid with an adapter circuit, which at least includes the power management module 107, the voltage conversion module 214, the gamma gray scale correction module 212, the voltage reduction and stabilization circuit 108, and the like, and is used for converting the voltage of the driving signal output by the control board into a voltage that can be recognized by the display screen. It should be noted that the adapter board at least includes a functional module required for implementing display of the display screen connected to the adapter board.
The control board 101 outputs the time-sequence-converted driving signal to the level conversion module 214 on the adapter board 103. The output driving signals include a column driving shift signal STV, a column driving clock signal CPV, a selection signal LC, a frame end clear signal TER, and the like, and the level shift module 214 performs a boosting process on the plurality of driving signals to convert the voltages of the driving signals into voltages capable of driving the display of the display screen.
The power management module 107 on the adapter board 103 is used to provide power to the other functional modules of the television including the control board 101. The power management module 107 is further connected to the display screen driving circuit 110, so as to provide a driving signal to the display screen 204, where the driving signal provided by the power management module 107 includes a screen on signal VGH and a screen off signal VGL in a range of 20V to 35V.
Since the control board 101 and the adapter board 103 are physically separated easily, when the display screen 104 is replaced, it can be determined whether the output end of the adapter board is matched with a new display screen, if so, the display screen 104 can be directly replaced, and if not, it is determined whether the fine adjustment of the adapter board 103 can be realized to match with the display screen, for example, a partial voltage resistor on the adapter board 103 is replaced to change the output voltage. Finally, adaptation can also be achieved by replacing the adapter plate 103. If the patch panel is replaced, only the output line sequence of the voltage adjusting module such as the power management module 107, the level conversion module 214, the gamma gray-scale correction module 212, etc. on the patch panel needs to be redesigned, so that the output line sequence is matched with the port of the new display screen 204 for connection with the patch panel 103. In addition, newly-designed adapter plates can also be incorporated with newly-added functional modules or other newly-formed liquid crystal display circuits, such as touch control circuits, voice semantic recognition circuits, and the like. Has high flexibility. Therefore, the main control circuit laid on the main control board realizes the time sequence conversion function of the driving signals, and fewer parts are reserved on the adapter board, so that the design and manufacturing cost of the adapter board is greatly reduced on the basis of not reducing the generalization and flexibility of each circuit module of the television, and the research and development time can be shortened. In one embodiment, the control board 101 is further electrically connected to the storage module 105, and the storage module 105 may store a plurality of display parameters corresponding to the liquid crystal panel, including the display parameters connected to the output terminal of the adapter board 103. The memory module 105 may be integrated on the control board or may be separately provided in the corresponding memory device. Because the display screen model generally comprises a manufacturer code, a display screen size and a display screen serial number, the display screen parameters can be pointed through the display screen model. Specifically, the display screen parameters corresponding to a plurality of display screen models can be stored in advance, each display screen parameter points to the data arrangement format of the corresponding display screen driving signal, when the display screen parameters corresponding to the new display screen are stored in the storage module of the control panel, under the condition of replacing the display screen, if the physical structure is adapted, the software setting can be changed through the change, the control panel can be conveniently completed, and the adapter plate and the new display screen are adapted on the software.
In another embodiment, the display screen parameters may also be customized. Illustratively, various display screens which are determined to be known can be identified by appointed numbers, for example, 1, 2, 3 … and corresponding software settings are carried out, and after the replacement of the display screen is completed, the display can be conveniently carried out on a new display screen by switching the number identification, which is very convenient.
The adapter board may have a first input connector for connecting to an output of the control board and a second input connector, which is an expansion connector, and correspondingly, the control board also has a connection mechanism adapted to the second connector. Under the condition that new functions need to be expanded, the control board and the adapter board do not need to be redesigned and manufactured, and the expanded functional circuit is connected into the circuit through the expanded connector. Illustratively, the extended functional circuitry may include sensor circuitry, touch screen circuitry, audio circuitry, and the like. Therefore, new functions can be continuously expanded on the basis of the existing control panel and adapter plate, and the development of television products with new functions can be rapidly completed. If the new functions to be expanded cannot be connected through the expansion connector or in order to optimize the structural design of the adapter plate, in another embodiment, the adapter plate can be redesigned, the expanded new functions are integrated in the new adapter plate, and the newly designed adapter plate is connected with the control panel and the display screen, so that the function expansion of the whole television can be realized quickly, and the development cycle can be shortened.
Fig. 7 is a schematic diagram of a board end line sequence of a first input connector of a patch panel according to an embodiment of the present application. As shown in fig. 7, the 1 st to 8 th input connectors of the first input connector are power signal pins, the 10 th to 14 th input connectors are ground signal pins, the 15 th to 22 th input connectors are communication signal pins, the 26 th to 61 th input connectors are data signal pins, and the 62 th to 67 th input connectors are control signal pins. There is a difference in input ports of driving signals due to various display panels. Illustratively, some of the driving signals required by the display screen include a start signal, two line control signals, and the like, and some of the driving signals required by the display screen include a start signal, a line control signal, a line switching signal, and the like. In order to adapt to the known varieties of display screens, the application arranges at least four pins for transmitting driving signals on the first output connector, and in the embodiment, 6 control signal pins are reserved to adapt to the input ports of various display screens which may appear in the future. Therefore, after a new display screen is replaced, the whole machine can be assembled and debugged only by adjusting the software control method, and the research and development period is shortened.
In one embodiment, the adapter board may further have a plurality of output connectors, wherein at least one of the output connectors is an extended output connector, and the plurality of output connectors may be flexibly adapted to a plurality of display screens due to different requirements of different display screens on the format of data input.
In one embodiment, to improve the modularization and generalization, the time sequence conversion circuit can be packaged into a chip integrated in the control board.
The application also provides a television control method. The television control method is specifically executed by a controller of a television, and the controller comprises a control panel, a switching panel, a storage module, one or more processors, an external interface, a communication module and the like. The memory is used for storing computer programs, and the processor executes the computer programs under the control of the controller, so that respective functions can be executed and data processing can be carried out, namely the television control method is completed.
Fig. 8 is a flowchart of a television control method according to an embodiment of the present application. As shown in fig. 8, the television control method at least has the following steps S510 to S530.
Step S510, receiving a video image signal corresponding to a video image to be displayed.
The video image signal corresponding to the video image to be displayed can be transmitted to the television in a wired manner such as an optical fiber and a cable, and can also be transmitted to the television in a wireless manner such as Bluetooth and WiFi.
After the receiver of the television receives the video image signal, the video image signal is transmitted to the processor on the control panel to be processed, including rectification and filtering of the signal, conversion of the time sequence of the signal and the like, so that the video image signal is converted into a control signal which can be identified by the display screen. The video image signal is a signal corresponding to a video image to be displayed, and the video image signal includes a clock signal, data information of the video image, data clock synchronization, and the like.
In step S520, the video image signal is converted into a driving signal for driving a display screen of the television according to a set rule.
The driving signal may be converted by a timing conversion circuit, which may include a logic board chip of a logic board in the related art as described above, and a receiving chip for converting the video image signal into a driving signal of a display screen mounted on the television and outputting the driving signal to the display screen. Specifically, the image data signals and the clock signals are converted into control signals which can be identified by the screen through processing the storage of the shift register, and the transistors in the screen are controlled by the row and column signals to work so as to control the torsion degree of liquid crystal molecules, so that the liquid crystal screen is driven to display images. That is, the timing conversion circuit is a driving signal for converting data information, clock synchronization information, and the like in the video image into a driving signal for outputting the video image. In one embodiment, the conversion may be into a control signal and a time-series video image signal, the time-series video image signal being a video stream arranged in time series. The control signal is a control signal that controls the display of the video stream on the display screen.
The setting rule is a conversion rule of the timing conversion circuit, which is related to the model of the display screen. The display screen model is used for corresponding display screen parameters, and the display screen parameters comprise one or more of display screen size, working voltage of the display screen and the like.
It should be noted that the display parameters corresponding to the display model need to be stored in advance, and the display parameters stored in advance may be the existing display parameters or the display parameters that are expected to be the existing display parameters. Therefore, the conversion rule is determined by different display screen parameters, and the video image signal is converted into a driving signal for driving one specific display screen which is stored in advance.
In step S530, the voltage of the driving signal is converted to be matched with the operating voltage of the display screen.
The driving signal is used for driving the display screen to output a video image, and therefore, the voltage of the driving signal needs to be matched with the working voltage of the display screen. The method of switching the circuit of the driving signal has already been stated above and will not be described herein.
In one embodiment, before step S520, the television control method may further include the steps of:
acquiring a target model of a display screen;
determining display screen parameters corresponding to the target model;
and determining the set conversion rule according to the display screen parameters.
The display screen model can be actively acquired, and the display screen model output by a developer can also be received and designed. The acquired model of the display screen is a target model.
The in-circuit storage module can be prestored with a plurality of display screen models, and each display screen model contains or points to display screen parameters of the display screen. The display screen parameters comprise display screen size, working voltage and other parameters. The display screen parameters are the determining factors for the conversion rules.
Therefore, under the condition of replacing the display screen, the replaced display screen can be identified according to the stored type of the display screen, the conversion rule is determined, and the video image signal is converted into the format of the driving signal matched with the type of the replaced display screen.
In the description of the present application, the terms "first", second "are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
In the description of the present specification, the description of the term "one embodiment" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above description is only a preferred exemplary embodiment of the present application, and is not intended to limit the embodiments of the present application, and those skilled in the art can easily make various changes and modifications according to the main concept and spirit of the present application, so that the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (10)
1. A display device, comprising:
the display screen is used for displaying video images;
the display device comprises a control panel, a master control circuit and a time sequence conversion circuit, wherein the master control circuit is used for sending a video image signal corresponding to a video image to be displayed to the time sequence conversion circuit;
the display screen comprises an adapter plate, wherein a conversion circuit is integrated on the adapter plate, the input end of the conversion circuit is electrically connected with the time sequence conversion circuit, the output end of the adapter plate is electrically connected with the display screen, and the conversion circuit is used for converting the voltage of the driving signal into a voltage matched with the working voltage of the display screen.
2. The display device according to claim 1,
the display device also comprises a storage module, wherein a plurality of display screen parameters corresponding to the display screens are stored in the storage module, and the display screen parameters comprise parameters corresponding to the display screens connected with the output end of the adapter plate; the time sequence conversion circuit converts the video image signals into driving signals for driving the display screen according to the display screen parameters stored in the storage module, wherein the driving signals comprise control signals and time sequence video image signals, and the time sequence video image signals are video streams arranged according to time sequence.
3. The display device according to claim 1,
the adapter plate is provided with a first input connector and a second input connector, the first input connector is used for being connected with the output end of the control plate, and the second input connector is an expansion connector.
4. The display device according to claim 3,
the patch panel also has a plurality of output connectors, wherein at least one of the output connectors is an expansion output connector.
5. The display device according to claim 4,
the output connector comprises a first output connector, the adapter plate is electrically connected with the display screen through the first output connector, and the first output connector is provided with at least four pins for outputting the driving signals so as to be matched with various ports for inputting the driving signals by the display screen.
6. The display device according to claim 1,
the display device is also provided with a power supply circuit, the power supply circuit is electrically connected with the control panel and the adapter plate so as to provide power for the main control circuit, the time sequence conversion circuit and the adapter circuit, and the power supply circuit is integrated in the control panel or exists independently.
7. The display device according to claim 1,
the time sequence conversion circuit comprises a time sequence conversion chip.
8. A method of controlling a display device, the method comprising:
receiving a video image signal corresponding to a video image to be displayed;
converting the video image signal into a driving signal for driving a display screen of the display device according to a set rule;
and converting the voltage of the driving signal to be matched with the working voltage of the display screen.
9. The method according to claim 8, wherein before the converting the video image signal into a driving signal for driving a display screen of the display device according to a set rule, the method further comprises:
acquiring a target model of the display screen;
determining display screen parameters corresponding to the target model;
and determining a set conversion rule according to the display screen parameters.
10. The method according to claim 9, wherein the converting the video image signal into a driving signal for driving a display screen of the display device according to a set rule comprises:
and converting the video image signals into driving signals for driving a display screen of the display device according to a set rule, wherein the driving signals comprise control signals and time sequence video image signals, and the time sequence video image signals are video streams arranged according to a time sequence.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011348831X | 2020-11-26 | ||
| CN202011348831 | 2020-11-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114554121A true CN114554121A (en) | 2022-05-27 |
Family
ID=81153759
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122944236.9U Active CN216356999U (en) | 2020-11-26 | 2021-11-26 | Television and display device |
| CN202111428618.4A Pending CN114554121A (en) | 2020-11-26 | 2021-11-26 | Display device and control method of display device |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122944236.9U Active CN216356999U (en) | 2020-11-26 | 2021-11-26 | Television and display device |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN216356999U (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN216356999U (en) * | 2020-11-26 | 2022-04-19 | 海信视像科技股份有限公司 | Television and display device |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103617780A (en) * | 2013-12-06 | 2014-03-05 | 北京航空航天大学 | AMOLED display screen drive circuit and nonlinear interpolation construction method thereof |
| WO2015100786A1 (en) * | 2013-12-31 | 2015-07-09 | 深圳市华星光电技术有限公司 | Driving circuit of liquid crystal panel, liquid crystal panel, and liquid crystal display apparatus |
| CN105516753A (en) * | 2015-12-02 | 2016-04-20 | 深圳市华星光电技术有限公司 | Liquid crystal display television apparatus and liquid crystal display television system |
| US20170278475A1 (en) * | 2016-03-28 | 2017-09-28 | Samsung Display Co., Ltd. | Display device with low power consumption |
| CN206879010U (en) * | 2017-06-28 | 2018-01-12 | 四川长虹电器股份有限公司 | The universe point screen device of LCD TV TCONLESS plates |
| CN109147634A (en) * | 2018-10-22 | 2019-01-04 | 苏州华兴源创科技股份有限公司 | A kind of generating device and method of display screen detection signal |
| CN216356999U (en) * | 2020-11-26 | 2022-04-19 | 海信视像科技股份有限公司 | Television and display device |
-
2021
- 2021-11-26 CN CN202122944236.9U patent/CN216356999U/en active Active
- 2021-11-26 CN CN202111428618.4A patent/CN114554121A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103617780A (en) * | 2013-12-06 | 2014-03-05 | 北京航空航天大学 | AMOLED display screen drive circuit and nonlinear interpolation construction method thereof |
| WO2015100786A1 (en) * | 2013-12-31 | 2015-07-09 | 深圳市华星光电技术有限公司 | Driving circuit of liquid crystal panel, liquid crystal panel, and liquid crystal display apparatus |
| CN105516753A (en) * | 2015-12-02 | 2016-04-20 | 深圳市华星光电技术有限公司 | Liquid crystal display television apparatus and liquid crystal display television system |
| US20170278475A1 (en) * | 2016-03-28 | 2017-09-28 | Samsung Display Co., Ltd. | Display device with low power consumption |
| CN206879010U (en) * | 2017-06-28 | 2018-01-12 | 四川长虹电器股份有限公司 | The universe point screen device of LCD TV TCONLESS plates |
| CN109147634A (en) * | 2018-10-22 | 2019-01-04 | 苏州华兴源创科技股份有限公司 | A kind of generating device and method of display screen detection signal |
| CN216356999U (en) * | 2020-11-26 | 2022-04-19 | 海信视像科技股份有限公司 | Television and display device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN216356999U (en) | 2022-04-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100507645C (en) | Method and apparatus for driving liquid crystal display | |
| CN101751890B (en) | Liquid crystal display and method of driving the same | |
| CN100435202C (en) | Method and apparatus for driving liquid crystal display | |
| CN101751886B (en) | Liquid crystal display and driving method thereof | |
| CN100449603C (en) | Apparatus and method of driving liquid crystal display device | |
| KR101482234B1 (en) | Display device and clock embedding method | |
| CN1901021B (en) | Driving apparatus for display device | |
| US8810479B2 (en) | Multi-panel display device configured to align multiple flat panel display devices for representing a single image and method of driving the same | |
| CN100507651C (en) | Liquid crystal display | |
| CN102256158B (en) | Automatic testing method and system for television circuit board function | |
| KR101957489B1 (en) | Power supplying apparatus for liquid crystal display and method thereof | |
| CN101661724B (en) | Display device | |
| CN109658896A (en) | A kind of gamma electric voltage generative circuit, driving circuit and display device | |
| CN101656057A (en) | Timing control apparatus and display device having the same | |
| CN101069148A (en) | Displaying apparatus and control method thereof | |
| CN103472748A (en) | Verification system and method of sequential control circuit | |
| CN110459154B (en) | Display screen interface signal conversion circuit, device and method | |
| US20090237340A1 (en) | Liquid crystal display module and display system including the same | |
| CN101561991B (en) | Display device and color adjusting method thereof | |
| CN112752090A (en) | Testing device | |
| CN216356999U (en) | Television and display device | |
| KR101696458B1 (en) | Liquid crystal display | |
| CN105093589B (en) | Liquid crystal display die set aging testing system | |
| KR101645508B1 (en) | Liquid crystal display device including power supplying unit | |
| CN112750389A (en) | Testing device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |