WO2023125461A1 - 控制方法、调光控制器以及显示设备 - Google Patents

控制方法、调光控制器以及显示设备 Download PDF

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Publication number
WO2023125461A1
WO2023125461A1 PCT/CN2022/142116 CN2022142116W WO2023125461A1 WO 2023125461 A1 WO2023125461 A1 WO 2023125461A1 CN 2022142116 W CN2022142116 W CN 2022142116W WO 2023125461 A1 WO2023125461 A1 WO 2023125461A1
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WIPO (PCT)
Prior art keywords
voltage
state
backlight unit
power supply
voltage state
Prior art date
Application number
PCT/CN2022/142116
Other languages
English (en)
French (fr)
Inventor
李起源
金锺大
林荣镇
严丞辉
Original Assignee
北京显芯科技有限公司
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Application filed by 北京显芯科技有限公司 filed Critical 北京显芯科技有限公司
Priority to KR1020247025896A priority Critical patent/KR20240129043A/ko
Publication of WO2023125461A1 publication Critical patent/WO2023125461A1/zh
Priority to US18/757,417 priority patent/US20240349414A1/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
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
    • H05B47/20—Responsive to malfunctions or to light source life; for protection
    • H05B47/24—Circuit arrangements for protecting against overvoltage
    • 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
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2330/00—Aspects of power supply; Aspects of display protection and defect management
    • G09G2330/02—Details of power systems and of start or stop of display operation
    • G09G2330/021—Power management, e.g. power saving

Definitions

  • the present application relates to but is not limited to a control method, a dimming controller and a display device.
  • liquid crystal displays Liquid Crystal Displays, LCD displays for short.
  • a display device usually consists of a liquid crystal panel and a backlight circuit.
  • the backlight circuit is located under the liquid crystal panel and is used to provide backlight for the liquid crystal panel. How to reduce the power loss of the backlight circuit without affecting the data display of the display device has been a long-term problem to be solved.
  • An embodiment of the present application provides a control method, the method is applied to a dimming controller, and a display device includes a dimming controller and a backlight unit; each backlight unit includes a plurality of driving units, and one output channel of each driving unit is connected to a light emitting unit.
  • the control terminal connection of the unit, the methods include:
  • the voltage state of each output channel of any drive unit wherein, the voltage state includes undervoltage state, overvoltage state and stable state; the voltage state of the output channel of each drive unit is the output channel of the drive unit according to the preset time The voltage and stable working voltage range are determined;
  • the voltages of the power supply terminals of all the light emitting units in the backlight unit are adjusted according to the voltage state of each output channel of any number of driving units.
  • adjusting the voltages of the power supply terminals of all the light-emitting units in the backlight unit according to the voltage state of each output channel of any number of drive units specifically includes:
  • the voltages of the power supply terminals of all the light emitting units in the backlight unit are adjusted.
  • the voltage state of the backlight unit is determined according to the number of output channels corresponding to each voltage state and the priority of each voltage state, specifically including:
  • the voltage state corresponding to the largest number of output channels is used as the voltage state of the backlight unit
  • the number of corresponding output channels satisfying the critical condition is selected from each voltage state as the candidate voltage state; and the candidate voltage state with the highest priority is used as the voltage state of the backlight unit.
  • the power supply terminals of all light-emitting units are connected to a common power supply terminal; adjusting the voltage of the power supply terminals of all light-emitting units in the backlight unit according to the voltage state of the backlight unit specifically includes:
  • the voltage of the common power supply terminal is adjusted according to the voltage state of the backlight unit, so as to realize the adjustment of the voltages of the power supply terminals of all the light emitting units in the backlight unit.
  • the display device further includes a voltage conversion module, the voltage conversion module is connected to the common power supply terminal; adjusting the voltage of the common power supply terminal according to the voltage state of the backlight unit, specifically includes:
  • An adjustment instruction is generated according to the voltage state of the backlight unit, wherein the adjustment instruction is used to control the voltage conversion module to adjust the voltage of the common power supply terminal.
  • the adjustment instruction is generated according to the voltage state of the backlight unit, specifically including:
  • a step-down command is generated; the step-down command is used to control the voltage conversion module to reduce the voltage of the common power supply terminal;
  • a boost command is generated; the boost command is used to control the voltage conversion module to increase the voltage of the common power supply terminal;
  • a hold instruction is generated, wherein the hold instruction is used to control the voltage conversion module to maintain the voltage of the common power supply terminal.
  • the method also includes:
  • the output channel When the voltage of the output channel is less than the lower boundary of the stable working voltage range, the output channel is in an undervoltage state
  • the output channel When the voltage of the output channel is within the stable working voltage range, the output channel is in a stable state.
  • dimming controller including: a processor, and a memory connected to the processor in communication;
  • the memory stores computer-executable instructions
  • the processor executes the computer-executed instructions stored in the memory, so as to implement the control method involved in the above-mentioned embodiments.
  • each backlight unit includes any number of modules, and each module includes a plurality of driving units and a plurality of light emitting units, each One output channel of the drive unit is connected to the control terminals of multiple light emitting units; each drive unit is also connected to the dimming controller.
  • the display device further includes a voltage conversion module, the voltage conversion module is connected to the dimming controller, the voltage conversion module is also connected to a common power supply terminal, and the power supply terminals of all light emitting units are connected to the common power supply terminal.
  • the present application provides a control method, a dimming controller and a display device.
  • the driving unit controls the light-emitting unit to emit light
  • the voltage drop on the light-emitting unit will change as the temperature rises and the displayed pictures are different, which will make the driving unit
  • the voltage of the output channel also changes, the voltage state of each output channel is determined based on the stable operating voltage range and the voltage of each output channel of any number of drive units, and the power supply of all light-emitting units in the backlight unit is adjusted based on the voltage state of each output channel Adjusting the voltage of the power supply terminal of the light-emitting unit can reduce the power consumption of the backlight unit and ensure the effect of picture display.
  • there is no need to add sensors to monitor the voltage state of the backlight unit the thickness of the display device will not be increased, and the cost is lower.
  • FIG. 1 is a structural diagram of a display device provided by an embodiment of the present application.
  • FIG. 2 is a schematic circuit diagram of a display device provided in another embodiment of the present application.
  • FIG. 3 is a schematic flowchart of a control method provided by an embodiment of the present application.
  • FIG. 4 is a schematic diagram of the principle of the voltage state of the output channel provided by another embodiment of the present application.
  • FIG. 5 is a schematic flowchart of a control method provided by an embodiment of the present application.
  • FIG. 6 is a schematic structural diagram of a control device provided by an embodiment of the present application.
  • Fig. 7 is a schematic structural diagram of a dimming controller provided by another embodiment of the present application.
  • a display device is an important part of many electronic devices, for example, a television equipped with a display device, a monitor equipped with a display device, and the like.
  • An embodiment of the present application provides a display device.
  • the display device includes a cover plate, a liquid crystal panel, a backlight structure and a circuit board.
  • the cover plate is located above the liquid crystal panel for protecting the liquid crystal panel.
  • the backlight structure is located under the liquid crystal panel and is used to provide backlight for the liquid crystal panel.
  • the circuit board is connected to the liquid crystal panel, and the circuit board is used to drive the liquid crystal panel to display different contents on the liquid crystal panel.
  • the display device includes a dimming controller 200 (Dimming Controller, referred to as: DCON), a synchronous controller 300 (Timing Controller, referred to as: TCON), a backlight unit 100 (Back light Unit, referred to as: BLU) and a liquid crystal panel 600.
  • the dimming controller 200 generates a control signal according to the dimming data output by the synchronous controller 300, and the control signal is used to control the driving unit 110 in the backlight unit 100 to generate a driving signal.
  • the driving unit 110 supplies a driving signal to the light emitting unit 120, and the driving signal can control the light emitting brightness of the light emitting unit 120, thereby providing backlight with different brightness.
  • the backlight structure generally includes a reflective film, a diffuser film, and a backlight unit 100 .
  • the backlight unit 100 is used to provide backlight, and the reflective film and the diffuser film are used to make the light distribution provided by the light emitting unit 120 more uniform.
  • the backlight unit 100 includes any number of modules, and each module includes a plurality of driving units 110 and a plurality of light emitting units 120.
  • the plurality of driving units 110 are distributed in an array, for example: in an array of M ⁇ N, as shown in FIG. Only the driving unit 110 in the first row and the first column, the driving unit 110 in the first row and the Mth column, the driving unit 110 in the Nth row and the first column, and the driving unit 110 in the Nth row and the Mth column are shown.
  • Each driving unit 110 is connected with a plurality of light emitting units 120, and the driving unit 110 is provided with a plurality of output channels, and each output channel is connected with a control terminal of a light emitting unit 120, and the power supply terminal of each light emitting unit 120 is connected with a power supply Vled to drive
  • the unit 110 is used to provide a driving signal for the light emitting unit 120 .
  • the light emitting unit 120 includes a plurality of light emitting diodes connected in series, and the anode of the light emitting diode at the head end is used as a power supply end of the light emitting unit 120 for connecting to the power supply Vled.
  • the cathode of the light emitting diode at the end is used as the control terminal of the light emitting unit 120 for connecting with the driving unit 110 .
  • the display device provided by the embodiment of the present application further includes a voltage conversion module 400, the control terminal of the voltage conversion module 400 is connected to the dimming controller 200, and the DC side of the voltage conversion module 400 is connected to the common power supply terminal Com.
  • the power supply terminals of all light-emitting units 120 are connected to the common power supply terminal Com, and the voltage conversion module 400 is used to adjust the voltage of the power supply terminals of all light-emitting units 120 according to the instruction of the dimming controller 200, so as to reduce the voltage without affecting the backlight intensity. Displays the power consumption of the device.
  • the voltage conversion module 400 may be an alternating current to direct current (AC-DC) converter, or a direct current to direct current (DC-DC) converter. When the voltage conversion module is an AC-DC converter, the AC side of the voltage conversion module is connected to an AC power source. When the voltage conversion module is a DC-DC converter, the other DC side of the voltage conversion module is connected to a DC power supply.
  • Embodiments of the present application provide a control method, a controller, and a display device, aiming to reduce power consumption of the display device without affecting screen display.
  • the technical concept of this application is: when the driving unit controls the light emitting unit to emit light, the voltage drop on the light emitting unit will change with the temperature rise and the displayed picture, which will cause the voltage of the output channel of the driving unit to change. If the voltage of the output channel of the drive unit is too low, it will affect the normal operation of the drive unit, and if the voltage of the output channel of the drive unit is too high, the power loss will increase. Based on the above analysis process, the dimming controller reads the voltage of any drive unit.
  • the voltage state of each output channel determines the control strategy of the power supply end of the light-emitting unit by the voltage state of each output channel. By adjusting the voltage of the power supply end of the light-emitting unit, the effect of reducing power consumption and ensuring screen display is achieved.
  • an embodiment of the present application provides a control method, which is run in a dimming controller, and the control method includes:
  • the display device includes a backlight unit, the backlight unit includes any number of modules, each module includes a plurality of driving units and a plurality of light emitting units, the driving unit is provided with a plurality of output channels, and one output channel of the driving unit is connected to a The control terminal connection of the light unit.
  • the drive unit saves the voltage of each output channel within a preset time at a preset sampling frequency.
  • the shortest duration of the preset time is the shortest time required for the drive unit to obtain the voltages of its multiple output channels, and the longest duration of the preset time is determined according to the minimum allowable change time of the voltage of the power supply terminal of the light emitting unit, the minimum allowable change The time is used to ensure that the display does not shake.
  • the voltage state of the output channel of each drive unit is determined by the drive unit according to the voltage of the output channel within a preset time and the stable working voltage range.
  • the stable operating voltage range is set according to application requirements. After the stable working voltage range is obtained, the voltage of each output channel of the driving unit is compared with the stable working voltage range to obtain the voltage state of each output channel of the driving unit.
  • the voltage state includes an undervoltage state, an overvoltage state and a steady state.
  • the output channel when the voltage of the output channel is greater than the upper boundary of the stable operating voltage range, the output channel is in an overvoltage state.
  • the output channel When the voltage of the output channel is lower than the lower boundary of the stable operating voltage range, the output channel is in an undervoltage state.
  • the output channel When the voltage of the output channel is within the stable working voltage range, the output channel is in a stable state.
  • the dimming controller can obtain the voltage status of the output channels of all the driving units in the BLU, and can also obtain the voltage status of the output channels of the driving units located in a certain row or multiple rows, or can obtain the voltage status of the output channels of the driving units located in a certain column or The voltage states of the output channels of the driving units on multiple columns may also be obtained from the voltage states of the output channels of the driving units located in a certain area.
  • this step after obtaining the voltage state of each output channel of any number of drive units, statistical analysis is performed on the voltage state of each output channel of any number of drive units to determine the voltage state of the backlight unit. Furthermore, during the statistical analysis, the priority of each voltage state may also be combined to improve the display effect while reducing the power consumption of the display device.
  • the voltage states of most of the output channels are in the undervoltage state, it is determined that the backlight unit is in the undervoltage state, and the voltages of the power supply terminals of all light emitting units need to be increased.
  • the voltage states of most of the output channels are in the overvoltage state, it is determined that the backlight unit is in the overvoltage state, and the voltages of the power supply terminals of all light emitting units need to be reduced.
  • the voltage states of most of the output channels are in a stable state, it is determined that the backlight unit is in a stable state, and it is necessary to maintain the voltages of the power supply terminals of all light emitting units.
  • the power supply terminal of the light-emitting unit is connected to the common power supply terminal Com.
  • the dimming controller After determining the voltage state of the backlight unit, the dimming controller only needs to adjust the voltage of the common power supply terminal Com to realize the control of the power supply terminal of the light-emitting unit. The voltage is adjusted uniformly.
  • the drive unit determines the voltage state of each output channel based on the stable operating voltage range and the voltage of the output channel, and the dimming controller obtains the voltage state of any output channel of the drive unit and based on the voltage of each output channel
  • the state adjusts the voltage of the power supply terminals of all the light emitting units, and adjusting the voltage of the power supply terminals of the light emitting units can reduce the power consumption of the backlight unit and ensure the effect of picture display.
  • control method includes:
  • the voltage state includes undervoltage state, overvoltage state and stable state
  • the drive unit collects the voltage of its output channel within a preset time, and compares the voltage of each output channel with the stable operating voltage range to obtain The voltage status of each output channel.
  • each driving unit includes L output channels
  • only the number of P driving units among them is obtained, and it is judged whether to obtain the voltages of the P output channels.
  • counting the number of output channels corresponding to each voltage state refers to counting the number of output channels in an overvoltage state, counting the number of output channels in an undervoltage state, and counting the number of output channels in a stable state .
  • the voltage state with the largest number of output channels is determined, and when there is only one voltage state corresponding to the largest number of output channels, the number of output channels is The maximum voltage state is taken as the voltage state of the backlight unit.
  • the voltage state with a higher priority is selected from the plurality of voltage states with the largest number of output channels as the voltage state of the backlight unit.
  • the critical conditions of each voltage state are stored locally, and the critical conditions corresponding to each voltage state may be different or the same.
  • the number of corresponding output channels satisfying the critical condition is selected from each voltage state as the candidate voltage state, and the candidate voltage state with the highest priority is used as the voltage state of the backlight unit.
  • the critical condition of a certain voltage state specifically includes whether the number of output channels corresponding to the voltage state is greater than a preset number threshold. When it is greater than the preset number threshold, it means that the number of output channels corresponding to the voltage state satisfies the critical condition. When it is less than or equal to the preset number threshold, it indicates that the number of output channels corresponding to the voltage state does not meet the critical condition.
  • the power supply terminals of all light-emitting units are connected to the common power supply terminal Com
  • the display device also includes a voltage conversion module, which is connected to the common power supply terminal Com, and generates an adjustment command according to the voltage state of the backlight unit, and the adjustment command is used for
  • the control voltage conversion module adjusts the voltage of the common power supply terminal Com, so as to realize the adjustment of the voltages of the power supply terminals of all the light emitting units in the backlight unit.
  • the step-down command is generated when the voltage state of the backlight unit is an over-voltage state.
  • the step-down command is used to control the voltage conversion module to reduce the voltage of the power supply terminals of all the light-emitting units in the backlight unit.
  • a boost command is generated when the voltage state of the backlight unit is an undervoltage state.
  • the boost command is used to control the voltage conversion module to increase the voltage of the power supply terminals of all the light emitting units in the backlight unit.
  • a hold command is generated, and the hold command is used to control the voltage conversion module to maintain the voltages of the power supply terminals of all light emitting units in the backlight unit.
  • the voltage state of each output channel of any drive unit is counted, and the voltage state of the backlight unit is obtained based on the statistical result and the priority of the voltage state, and then the power supply of the light-emitting unit is determined based on the voltage state of the backlight unit
  • the terminal voltage adjustment strategy can more accurately adjust the voltage of the power supply terminal of the light emitting unit.
  • the voltage conversion module is used to adjust the voltage of the common power supply terminal, so as to realize the adjustment of the power supply terminals of all light-emitting units, without needing to adjust the voltage of the power supply terminals of each light-emitting unit one by one, simplifying the structure of the display device.
  • control method is run in the dimming controller, and the control method includes:
  • each driving unit is provided with 4 output channels, and each output channel is connected to a row of series-connected light-emitting diodes.
  • Each drive unit reads the voltages of the 4 output channels within a preset time, and determines the voltage states of the 4 output channels according to the stable working voltage range and the voltages of the 4 output channels.
  • the minimum preset time is the time when the voltage of the output channel can be obtained, and the maximum preset time will not affect the display time when the voltage converter controls the power supply terminal voltage of the light emitting unit, for example, the screen shakes.
  • the voltage of the first output channel of a certain drive unit is 0.5V
  • the voltage of the second output channel is 1.5V
  • the voltage of the third output channel is 1.5V
  • the voltage of the fourth output channel is 1.5V.
  • the voltage of each output channel is 2V, set the stable working voltage range [1V, 2V].
  • the first output channel is in an undervoltage state
  • the second and third output channels are in a stable state
  • the fourth output channel is in an overvoltage state
  • the drive unit For any drive unit in the 64 ⁇ 32 drive units, the drive unit repeatedly executes the above step of determining the voltage state of the output channel.
  • the dimming controller counts the voltage state of each output channel of any drive unit within the preset time, that is, obtains the number of output channels in the undervoltage state, the number of output channels in the overvoltage state, and the number of output channels in the The number of output channels in steady state. After the number of output channels corresponding to the three states is obtained, the voltage state of the backlight unit is determined based on the above number.
  • the voltage state of the display device is the one with the largest number of output channels in the undervoltage state, in the overvoltage state, and in the stable state. If the number of output channels corresponding to two of the three states is tied for the largest number, the voltage state of the display device is determined according to the priority of the voltage state. For example: the number of output channels in the undervoltage state is the same as the number of output channels in the steady state, and both are greater than the number of output channels in the overvoltage state, and the priority of the undervoltage state is higher than that of the stable state. Then it is determined that the backlight unit is in an undervoltage state.
  • satisfying the critical condition includes that the number of output channels in the voltage state is greater than a preset threshold, or, satisfying the critical condition includes the ratio between the number of output channels in the voltage state and the total number of all output channels of the display device greater than the preset ratio.
  • the critical conditions corresponding to each voltage state are different. For example, when the ratio of the number of output channels in the undervoltage state to the number of all output channels exceeds 10%, the critical condition of the undervoltage state is met. When the ratio of the number of output channels in the overvoltage state to the number of all output channels exceeds 20%, the critical condition of the overvoltage state is met.
  • a control signal of the voltage conversion module is generated according to the voltage state of the backlight unit, so that the voltage conversion module adjusts the power supply terminals of all light emitting units in the backlight unit.
  • a boost command is generated to control the voltage conversion module to increase the DC voltage connected to the power supply terminals of the light emitting units, thereby adjusting the voltages of the power supply terminals of all light emitting units in the backlight unit.
  • a step-down command is generated to control the voltage conversion module to reduce the DC voltage connected to the power supply terminals of the light-emitting units, thereby adjusting the voltages of the power supply terminals of all light-emitting units in the backlight unit.
  • a holding instruction is generated to control the voltage conversion module to maintain the DC voltage connected to the power supply terminal of the light emitting unit.
  • the current voltage state of each output channel is determined according to the voltage of each output channel by obtaining the voltage of the output channel of any drive unit, and then the dimming controller reads the voltage from any drive unit.
  • the voltage state of each output channel and determine the voltage control strategy of the power supply end of the light emitting unit according to the voltage state of each output channel, so as to more accurately adjust the voltage of the power supply end of the light emitting unit.
  • control device 200 which includes:
  • the acquisition module 201 acquires the voltage state of each output channel of any drive unit; wherein, the voltage state includes an undervoltage state, an overvoltage state and a stable state; the voltage state of the output channel of each drive unit is determined by the drive unit according to a preset time within the output channel voltage and stable operating voltage range determined;
  • the processing module 202 is configured to adjust the voltage of the power supply terminals of all the light emitting units in the backlight unit according to the voltage state of each output channel of any drive unit.
  • processing module 202 is specifically used for:
  • the voltages of the power supply terminals of all the light emitting units in the backlight unit are adjusted.
  • processing module 202 is specifically used for:
  • the voltage state with the largest number of output channels is used as the voltage state of the backlight unit
  • the number of corresponding output channels satisfying the critical condition is selected from each voltage state as the candidate voltage state; and the candidate voltage state with the highest priority is used as the voltage state of the backlight unit.
  • the power supply terminals of all light emitting units are connected to a common power supply terminal; the processing module 202 specifically includes:
  • the voltage of the common power supply terminal is adjusted according to the voltage state of the backlight unit, so as to realize the adjustment of the voltages of the power supply terminals of all the light emitting units in the backlight unit.
  • the display device further includes a voltage conversion module, and the voltage conversion module is connected to the common power supply terminal; the processing module 202 is specifically used for:
  • An adjustment instruction is generated according to the voltage state of the backlight unit, wherein the adjustment instruction is used to control the voltage conversion module to adjust the voltage of the common power supply terminal.
  • processing module 202 is specifically used for:
  • a step-down command is generated; the step-down command is used to control the voltage conversion module to reduce the voltage of the common power supply terminal;
  • a boost command is generated; the boost command is used to control the voltage conversion module to increase the voltage of the common power supply terminal;
  • a hold instruction is generated, wherein the hold instruction is used to control the voltage conversion module to maintain the voltage of the common power supply terminal.
  • it also includes:
  • the output channel When the voltage of the output channel is less than the lower boundary of the stable working voltage range, the output channel is in an undervoltage state
  • the output channel When the voltage of the output channel is within the stable working voltage range, the output channel is in a stable state.
  • an embodiment of the present application provides a dimming controller 500 , and the dimming controller 500 includes a memory 501 and a processor 502 .
  • the memory 501 is used to store computer instructions executable by the processor
  • the processor 502 implements various steps in the methods in the above-mentioned embodiments when executing computer instructions. For details, refer to the related descriptions in the foregoing method embodiments.
  • the above-mentioned memory 501 may be independent or integrated with the processor 502 .
  • the dimming controller further includes a bus for connecting the memory 501 and the processor 502 .
  • the embodiment of the present application also provides a computer-readable storage medium, in which computer instructions are stored, and when the processor executes the computer instructions, each step in the method in the foregoing embodiments is implemented.
  • An embodiment of the present application further provides a computer program product, including computer instructions, and when the computer instructions are executed by a processor, each step in the method in the foregoing embodiments is implemented.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Liquid Crystal Display Device Control (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)

Abstract

一种控制方法、调光控制器（200）以及显示设备，方法包括：获取任意个驱动单元（110）的各个输出信道的电压状态（S101），其中，电压状态包括欠压状态、过压状态以及稳定状态，每个驱动单元（110）的输出信道的电压状态是驱动单元（110）根据预设时间内的输出信道的电压和稳定工作电压范围确定的，根据任意个驱动单元（110）的各个输出信道的电压状态调整背光单元（100）中所有发光单元（120）的供电端的电压（S102）。本方法可降低显示设备的功率损耗且保证画面显示。

Description

控制方法、调光控制器以及显示设备
本申请要求于2021年12月31日提交中国专利局、申请号为202111649268.4、申请名称为“控制方法、调光控制器以及显示设备”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及但不限定于一种控制方法、调光控制器以及显示设备。
背景技术
随着技术发展，显示设备成为众多电子设备的重要部件，例如：液晶显示屏(Liquid Crystal Display，简称LCD显示屏)。
显示设备通常由液晶面板以及背光电路组成。背光电路位于液晶面板的下方，用于为液晶面板提供的背光源。如何降低背光电路的功率损耗且不影响显示设备的数据显示一直是长期待解决的问题。
发明内容
本申请实施例提供一种控制方法，方法应用于调光控制器，显示设备包括调光控制器和背光单元；每个背光单元包括多个驱动单元，每个驱动单元的一个输出信道与一个发光单元的控制端连接，方法包括：
获取任意个驱动单元的各个输出信道的电压状态；其中，电压状态包括欠压状态、过压状态以及稳定状态；每个驱动单元的输出信道的电压状态是驱动单元根据预设时间内的输出信道的电压和稳定工作电压范围确定的；
根据任意个驱动单元的各个输出信道的电压状态调整背光单元中所有的发光单元的供电端的电压。
在一实施例中，根据任意个驱动单元的各个输出信道的电压状态调整背光单元中所有的发光单元的供电端的电压，具体包括：
统计各个电压状态对应的输出信道的数量，根据各个电压状态对应的输出信道的数量和各个电压状态的优先级确定背光单元的电压状态；
根据背光单元的电压状态调整背光单元中所有的发光单元的供电端的电压。
在一实施例中，根据各个电压状态对应的输出信道的数量和各个电压 状态的优先级确定背光单元的电压状态，具体包括：
当一个电压状态对应的输出信道的数量最大时，将所对应的输出信道的数量为最大的电压状态作为背光单元的电压状态；
当多个电压状态对应的输出信道的数量最大时，从对应的输出信道的数量最大的多个电压状态中选择优先级更高的作为背光单元的电压状态；
或者
从各个电压状态中选择对应的输出信道的数量满足临界条件作为备选电压状态；并将优先级最高的备选电压状态作为背光单元的电压状态。
在一实施例中，所有发光单元的供电端连接到公共电源端；根据背光单元的电压状态调整背光单元中所有的发光单元的供电端的电压，具体包括：
根据背光单元的电压状态调整公共电源端的电压，以实现对背光单元中所有的发光单元的供电端的电压的调整。
在一实施例中，显示设备还包括电压转换模块，电压转换模块连接到公共电源端；根据背光单元的电压状态调整公共电源端的电压，具体包括：
根据背光单元的电压状态生成调节指令，其中，调节指令用于控制电压转换模块调整公共电源端的电压。
在一实施例中，根据背光单元的电压状态生成调节指令，具体包括：
当背光单元的电压状态为过压状态时生成降压指令；降压指令用于控制电压转换模块降低公共电源端的电压；
当背光单元的电压状态为欠压状态时生成升压指令；升压指令用于控制电压转换模块提高公共电源端的电压；
当背光单元的电压状态为稳定状态时生成保持指令，其中，保持指令用于控制电压转换模块保持公共电源端的电压。
在一实施例中，方法还包括：
针对每个输出信道，当输出信道的电压大于稳定工作电压范围的上边界，则输出信道处于过压状态；
当输出信道的电压小于稳定工作电压范围的下边界，则输出信道处于欠压状态；
当输出信道的电压位于稳定工作电压范围内，则输出信道处于稳定状 态。
本申请另一实施例一种调光控制器，包括：处理器，以及与处理器通信连接的存储器；
存储器存储计算机执行指令；
处理器执行存储器存储的计算机执行指令，以实现上述实施例所涉及的控制方法。
本申请又一实施例提供一种显示设备，包括上述实施例提供调光控制器和背光单元；每个背光单元包括任意个模块，每个模块包括多个驱动单元和多个发光单元，每个驱动单元的一个输出信道与多个发光单元的控制端连接；每个驱动单元还与调光控制器连接。
在一实施例中，显示设备还包括电压转换模块，电压转换模块与调光控制器连接，电压转换模块还与公共电源端连接，所有发光单元的供电端连接到公共电源端。
本申请提供一种控制方法、调光控制器以及显示设备，在驱动单元控制发光单元发光时，发光单元上的压降会随着温度升高以及所显示的画面不同而变化，会使得驱动单元的输出信道的电压也发生变化，基于稳定工作电压范围和任意个驱动单元的各个输出信道的电压确定各个输出信道的电压状态，并基于各个输出信道的电压状态调整背光单元中所有发光单元的供电端的电压，调整发光单元的供电端的电压，可以降低背光单元的功耗且保证画面显示的效果。此外，也无需增加传感器来监测背光单元的电压状态，不会增加显示设备的厚度，成本更低。
附图说明
此处的附图被并入说明书中并构成本说明书的一部分，示出了符合本申请的实施例，并与说明书一起用于解释本申请的原理。
图1为本申请一实施例提供的显示设备的结构图；
图2为本申请又一实施例提供的显示设备的电路示意图；
图3为本申请一实施例提供的控制方法的流程示意图；
图4为本申请另一实施例提供的输出信道的电压状态的原理示意图；
图5为本申请一实施例提供的控制方法的流程示意图；
图6为本申请一实施例提供的控制装置的结构示意图；
图7为本申请又一实施例提供的调光控制器的结构示意图。
通过上述附图，已示出本申请明确的实施例，后文中将有更详细的描述。这些附图和文字描述并不是为了通过任何方式限制本申请构思的范围，而是通过参考特定实施例为本领域技术人员说明本申请的概念。
具体实施方式
这里将详细地对示例性实施例进行说明，其示例表示在附图中。下面的描述涉及附图时，除非另有表示，不同附图中的相同数字表示相同或相似的要素。以下示例性实施例中所描述的实施方式并不代表与本申请相一致的所有实施方式。相反，它们仅是与如所附权利要求书中所详述的、本申请的一些方面相一致的装置和方法的例子。
显示设备是众多电子设备的重要部件，例如：配置有显示设备的电视、配置有显示设备的监控器等。本申请一实施例提供一种显示设备。其中，显示设备包括盖板、液晶面板、背光结构以及电路板组成。其中，盖板位于液晶面板的上方，用于保护液晶面板。背光结构位于液晶面板的下方，用于为液晶面板提供的背光源，电路板与液晶面板连接，电路板用于驱动液晶面板，使液晶面板显示不同内容。
如图1和如图2所示，显示设备包括调光控制器200(Dimming Controller，简称：DCON)、同步控制器300(Timing Controller，简称：TCON)、背光单元100(Back light Unit，简称：BLU)以及液晶面板600。调光控制器200根据同步控制器300输出的调光数据生成控制信号，控制信号用于控制背光单元100内的驱动单元110生成驱动信号。驱动单元110向发光单元120供驱动信号，驱动信号可以控制发光单元120的发光亮度，进而提供不同亮度的背光。
下面重点描述显示设备中背光结构，背光结构通常包括反光膜、散光膜以及背光单元100等。背光单元100用于提供背光，反光膜和散光膜用于使发光单元120提供的光分布更加均匀。
如图2所示，背光单元100包括任意个模块，每个模块包括多个驱动单元110和多个发光单元120，多个驱动单元110呈阵列分布，例如：呈M×N的阵列分布，图中仅示出第1行第1列的驱动单元110、第1行第M列的驱动单元110、第N行第1列的驱动单元110以及第N行第M列 的驱动单元110。每个驱动单元110与多个发光单元120连接，驱动单元110设有多个输出信道，每个输出信道与一个发光单元120的控制端连接，每个发光单元120的供电端连接电源Vled，驱动单元110用于为发光单元120提供驱动信号。例如：发光单元120包括多个串联的发光二极管，位于首端的发光二极管的正极作为发光单元120的供电端，用于连接电源Vled。位于末端的发光二极管的负极作为发光单元120的控制端，用于与驱动单元110连接。
继续参考图2，本申请实施例提供的显示设备还包括电压转换模块400，该电压转换模块400的控制端与调光控制器200连接，该电压转换模块400的直流侧连接公共电源端Com，所有发光单元120的供电端连接到公共电源端Com，电压转换模块400用于根据调光控制器200的指令调节所有发光单元120的供电端的电压，以实现在不影响提供背光强度的前提下降低显示设备的功耗。该电压转换模块400可以是交流转直流电源(AC-DC)变换器，也可以是直流转直流(DC-DC)变换器。当电压转换模块为AC-DC变换器时，电压转换模块的交流侧连接交流电源。当电压转换模块为DC-DC变换器时，电压转换模块的另一直流侧连接直流电源。
本申请实施例提供一种的控制方法、控制器以及显示设备，旨在降低显示设备的功耗且不影响画面显示。本申请的技术构思是：在驱动单元控制发光单元发光时，发光单元上的压降会随着温度升高以及所显示的画面不同而变化，会使得驱动单元的输出信道的电压也发生变化，而驱动单元的输出信道的电压过低会影响驱动单元正常工作，驱动单元的输出信道的电压过高则会造成功率损耗变大，基于上述分析过程，调光控制器读取任意个驱动单元的各个输出信道的电压状态，由各个输出信道的电压状态决定发光单元的供电端的控制策略，通过调整发光单元的供电端的电压以达到降低功耗且保证画面显示的效果。
如图3所示，本申请一实施例提供一种控制方法，该控制方法运行于调光控制器中，该控制方法包括：
S101、获取任意个驱动单元的各个输出信道的电压状态。
在该步骤中，显示设备包括一个背光单元，背光单元包括任意个模块，每个模块包括多个驱动单元和多个发光单元，驱动单元设有多个输出信道， 驱动单元的一个输出信道与一个发光单元的控制端连接。
驱动单元以预设采样频率保存预设时间内其各个输出信道的电压。其中，预设时间的最短时长是驱动单元获取其多个输出信道的电压所需最短时间，预设时间的最长时长是根据发光单元的供电端的电压的最小允许变化时间确定的，最小允许变化时间用于保证显示画面不出现抖动。
每个驱动单元的输出信道的电压状态是驱动单元根据预设时间内的输出信道的电压和稳定工作电压范围确定的。稳定工作电压范围是根据应用需求设置的。在获得稳定工作电压范围后，将驱动单元的各个输出信道的电压与稳定工作电压范围比较，以获得驱动单元的各个输出信道的电压状态。
其中，电压状态包括欠压状态、过压状态以及稳定状态。如图4所示，针对每个输出信道，当输出信道的电压大于稳定工作电压范围的上边界，则输出信道处于过压状态。当输出信道的电压小于稳定工作电压范围的下边界，则输出信道处于欠压状态。当输出信道的电压位于稳定工作电压范围内，则输出信道处于稳定状态。
需要说明的是，调光控制器可以获取BLU中所有驱动单元的输出信道的电压状态，也可以获取位于某一行或者多行上的驱动单元的输出信道的电压状态，也可以获取位于某一列或者多列上的驱动单元的输出信道的电压状态，也可以获取位于某个区域内的驱动单元的输出信道的电压状态。
S102、根据任意个驱动单元的各个输出信道的电压状态调整背光单元中所有发光单元的供电端的电压。
在该步骤中，在获取上述任意个驱动单元的各个输出信道的电压状态后，通过对任意个驱动单元的各个输出信道的电压状态进行统计分析，以确定背光单元的电压状态。进一步地，在统计分析时，也可以结合各个电压状态的优先级，在降低显示设备的功率损耗的同时提高显示效果。
例如：当大部分的输出信道的电压状态为欠压状态时，则确定背光单元处于欠压状态，则需要提高所有发光单元的供电端的电压。当大部分的输出信道的电压状态为过压状态时，则确定背光单元处于过压状态，则需要降低所有发光单元的供电端的电压。当大部分的输出信道的电压状态为稳定状态时，则确定背光单元处于稳定状态，则需要保持所有发光单元的 供电端的电压。
在一实施例中，发光单元的供电端连接到公共电源端Com，调光控制器在确定背光单元的电压状态后，仅需调整公共电源端Com的电压，即可实现对发光单元的供电端的电压进行统一调整。
在上述技术方案中，驱动单元基于稳定工作电压范围和输出信道的电压确定各个输出信道的电压状态，由调光控制器获取任意个驱动单元的输出信道的电压状态后并基于各个输出信道的电压状态调整所有发光单元的供电端的电压，调整发光单元的供电端的电压可以降低背光单元的功耗且保证画面显示的效果。
如图5所示，本申请另一实施例提供一种控制方法，该控制方法包括：
S201、获取任意个驱动单元的各个输出信道的电压状态。
在该步骤中，电压状态包括欠压状态、过压状态以及稳定状态，驱动单元采集其输出信道在预设时间内的电压，并将各个输出信道的电压和稳定工作电压范围进行比较，以获得各个输出信道的电压状态。
S202、判断是否获取上述任意个驱动单元的各个输出信道的电压状态，若是，则进入S203，若否，则进入S201。
其中，当BLU包括M×N个驱动单元，每个驱动单元包括L个输出信道时，仅获取其中的P个驱动单元的数量，判断是否获得P个输出信道的电压。
S203、统计各个电压状态对应的输出信道的数量，根据各个电压状态对应的输出信道的数量和各个电压状态的优先级确定背光单元的电压状态。
在该步骤中，统计各个电压状态对应的输出信道的数量是指，统计处于过压状态的输出信道的数量，统计处于欠压状态的输出信道的数量，以及统计处于稳定状态的输出信道的数量。
在一实施例中，在统计各个电压状态对应的输出信道的数量后，确定输出信道的数量最大的电压状态，当仅有一个电压状态对应的输出信道的数量最大时，将输出信道的数量为最大的电压状态作为背光单元的电压状态。当有多个电压状态对应的输出信道的数量最大时，从输出信道的数量最大的多个电压状态中选择优先级更高的作为背光单元的电压状态。
在一实施例中，在本地存储各个电压状态的临界条件，各个电压状态对应的临界条件可以不同，也可以相同。从各个电压状态中选择对应的输出信道的数量满足临界条件作为备选电压状态，并将优先级最高的备选电压状态作为背光单元的电压状态。
其中，某一电压状态的临界条件具体包括该电压状态对应的输出信道的数量是否大于预设数量阈值。当大于预设数量阈值时，则表示该电压状态对应的输出信道的数量满足临界条件。当小于或者等于预设数量阈值时，则表示该电压状态对应的输出信道的数量不满足临界条件。
S204、根据背光单元的电压状态生成调节指令，其中，调节指令用于控制电压转换模块调整背光单元中所有的发光单元的供电端的电压。
在该步骤中，所有发光单元的供电端连接到公共电源端Com，显示设备还包括电压转换模块，电压转换模块连接到公共电源端Com，根据背光单元的电压状态生成调节指令，调节指令用于控制电压转换模块调整公共电源端Com的电压，以实现对背光单元中所有的发光单元的供电端的电压的调整。
在一实施例中，当背光单元的电压状态为过压状态时生成降压指令。降压指令用于控制电压转换模块降低背光单元中所有的发光单元的供电端的电压。
当背光单元的电压状态为欠压状态时生成升压指令。升压指令用于控制电压转换模块提高背光单元中所有的发光单元的供电端的电压。
当背光单元的电压状态为稳定状态时生成保持指令，保持指令用于控制电压转换模块保持背光单元中所有的发光单元的供电端的电压。
在上述技术方案中，通过统计任意个驱动单元的各个输出信道的电压状态，并基于统计结果和电压状态的优先级以获得背光单元的电压状态，再基于背光单元的电压状态确定发光单元的供电端的电压调整策略，可以更加精准的调整发光单元的供电端的电压。且使用电压转换模块调整公共电源端的电压，以实现对所有发光单元的供电端调整，无需逐个调整各个发光单元的供电端电压，简化显示设备的结构。
本申请又一实施例提供一种控制方法，该控制方法运行于调光控制器内，该控制方法包括：
S301、获取任意个驱动单元的各个输出信道的电压状态。
在该步骤中，例如：显示设备内设有64×32个驱动单元，每个驱动单元设有4个输出信道，每个输出信道连接一列串联的发光二极管。
每个驱动单元读取在预设时间内的4个输出信道的电压，并根据稳定工作电压范围和4个输出信道的电压确定4个输出信道的电压状态。
其中，最小预设时间是能够获取其输出信道的电压的时间，最大预设时间在使电压转换器控制发光单元的供电端电压时不会影响显示的时间，例如：画面出现抖动。
在该步骤中，在S301中获取到某一个驱动单元的第一个输出信道的电压为0.5V，第二个输出信道的电压为1.5V，第三个输出信道的电压为1.5V，第四个输出信道的电压为2V，设置稳定工作电压范围[1V，2V]。
针对该驱动单元，可以确定第一个输出信道处于欠压状态，第二个输出信道和第三个输出信道处于稳定状态，第四输出信道处于过压状态。
针对64×32个驱动单元中的任意个驱动单元，驱动单元重复执行上述确定输出信道的电压状态的步骤。
S302、判断是否获取上述任意个驱动单元的各个输出信道的电压，若是，则进入S303，若否，则进入S301。
S303、统计各个电压状态对应的输出信道的数量，根据各个电压状态对应的输出信道的数量和各个电压状态的优先级确定背光单元的电压状态。
在该步骤中，调光控制器统计预设时间内任意个驱动单元的各个输出信道的电压状态，也就是获得处于欠压状态的输出信道的数量，处于过压状态的输出信道的数量以及处于稳定状态的输出信道的数量。在获得三种状态对应的输出信道的数量后，基于上述数量确定背光单元的电压状态。
在一实施例中，将处于欠压状态、处于过压状态以及处于稳定状态中输出信道的数量最多的作为显示设备的电压状态。如果三种状态中有两种状态对应的输出信道的数量并列最多，则根据电压状态的优先级确定显示设备的电压状态。例如：处于欠压状态的输出信道的数量和处于稳定状态的输出信道的数量相同，且均大于处于过压状态的输出信道的数量，且欠压状态的优先级高于稳定状态的优先级，则确定背光单元处于欠压状态。
在一实施例中，确定各个电压状态对应的输出信道的数量是否满足临界条件，并根据各个电压状态的优先级从满足临界条件的电压状态中选择一个电压状态作为背光单元的电压状态。
针对一种电压状态，满足临界条件包括该电压状态的输出信道的数量大于预设阈值，或者，满足临界条件包括该电压状态的输出信道的数量和显示设备的所有输出信道的总数量之间比值大于预设比值。各个电压状态所对应的临界条件不同，例如：当处于欠压状态的输出信道的数量与所有输出信道的数量的比值超过10％，则满足欠压状态的临界条件。当处于过压状态的输出信道的数量与所有输出信道的数量的比值超过20％，则满足过压状态的临界条件。
S304、根据背光单元的电压状态调整背光单元中所有的发光单元的供电端的电压。
在该步骤中，在确定背光单元的电压状态后，根据背光单元的电压状态生成电压转换模块的控制信号，以使电压转换模块调整背光单元中所有发光单元的供电端。
当背光单元的电压状态为欠压状态时，生成升压指令，以控制电压转换模块升高与发光单元的供电端连接的直流测的电压，从而调整背光单元中所有发光单元的供电端的电压。
当背光单元的电压状态为过压状态时，生成降压指令，以控制电压转换模块降低与发光单元的供电端连接的直流测的电压，从而调整背光单元中所有发光单元的供电端的电压。
当背光单元的电压状态为稳定状态时，生成保持指令，以控制电压转换模块保持与发光单元的供电端连接的直流测的电压。
在上述技术方案中，通过获取任意个驱动单元的输出信道的电压，以根据各个输出信道的电压确定各个输出信道当前所处的电压状态，再由调光控制器从任意个驱动单元处读取各个输出信道的电压状态，并根据各个输出信道的电压状态确定发光单元的供电端的电压控制策略，以更加精准的调整发光单元的供电端的电压。
如图6所示，本申请实施例提供一种控制装置200，该控制装置200包括：
获取模块201，获取任意个驱动单元的各个输出信道的电压状态；其中，电压状态包括欠压状态、过压状态以及稳定状态；每个驱动单元的输出信道的电压状态是驱动单元根据预设时间内的输出信道的电压和稳定工作电压范围确定的；
处理模块202用于根据任意个驱动单元的各个输出信道的电压状态调整背光单元中所有的发光单元的供电端的电压。
在一实施例中，处理模块202具体用于：
统计各个电压状态对应的输出信道的数量，根据各个电压状态对应的输出信道的数量和各个电压状态的优先级确定背光单元的电压状态；
根据背光单元的电压状态调整背光单元中所有的发光单元的供电端的电压。
在一实施例中，处理模块202具体用于：
当一个电压状态对应的输出信道的数量最大时，将输出信道的数量为最大的电压状态作为背光单元的电压状态；
当多个电压状态对应的输出信道的数量最大时，从输出信道的数量最大的多个电压状态中选择优先级更高的作为背光单元的电压状态；
或者
从各个电压状态中选择对应的输出信道的数量满足临界条件作为备选电压状态；并将优先级最高的备选电压状态作为背光单元的电压状态。
在一实施例中，所有发光单元的供电端连接到公共电源端；处理模块202具体包括：
根据背光单元的电压状态调整公共电源端的电压，以实现对背光单元中所有的发光单元的供电端的电压的调整。
在一实施例中，显示设备还包括电压转换模块，电压转换模块连接到公共电源端；处理模块202具体用于：
根据背光单元的电压状态生成调节指令，其中，调节指令用于控制电压转换模块调整公共电源端的电压。
在一实施例中，处理模块202具体用于：
当背光单元的电压状态为过压状态时生成降压指令；降压指令用于控制电压转换模块降低公共电源端的电压；
当背光单元的电压状态为欠压状态时生成升压指令；升压指令用于控制电压转换模块提高公共电源端的电压；
当背光单元的电压状态为稳定状态时生成保持指令，其中，保持指令用于控制电压转换模块保持公共电源端的电压。
在一实施例中，还包括：
针对每个输出信道，当输出信道的电压大于稳定工作电压范围的上边界，则输出信道处于过压状态；
当输出信道的电压小于稳定工作电压范围的下边界，则输出信道处于欠压状态；
当输出信道的电压位于稳定工作电压范围内，则输出信道处于稳定状态。
如图7所示，本申请一实施例提供一种调光控制器500，调光控制器500包括存储器501和处理器502。
其中，存储器501用于存储处理器可执行的计算机指令；
处理器502在执行计算机指令时实现上述实施例中方法中的各个步骤。具体可以参见前述方法实施例中的相关描述。
可选地，上述存储器501既可以是独立的，也可以跟处理器502集成在一起。当存储器501独立设置时，该调光控制器还包括总线，用于连接存储器501和处理器502。
本申请实施例还提供一种计算机可读存储介质，计算机可读存储介质中存储有计算机指令，当处理器执行计算机指令时，实现上述实施例中方法中的各个步骤。
本申请实施例还提供一种计算机程序产品，包括计算机指令，该计算机指令被处理器执行时实现上述实施例中方法中的各个步骤。
本领域技术人员在考虑说明书及实践这里公开的发明后，将容易想到本申请的其它实施方案。本申请旨在涵盖本申请的任何变型、用途或者适应性变化，这些变型、用途或者适应性变化遵循本申请的一般性原理并包括本申请未公开的本技术领域中的公知常识或惯用技术手段。说明书和实施例仅被视为示例性的，本申请的真正范围和精神由下面的权利要求书指出。
应当理解的是，本申请并不局限于上面已经描述并在附图中示出的精确结构，并且可以在不脱离其范围进行各种修改和改变。本申请的范围仅由所附的权利要求书来限制。

Claims (10)

  1. 一种控制方法，其特征在于，所述方法应用于调光控制器，显示设备包括调光控制器和背光单元；每个背光单元包括任意个模块，每个模块包括多个驱动单元和多个发光单元，每个所述驱动单元的一个输出信道与一个发光单元的控制端连接，所述方法包括：
    获取任意个驱动单元的各个输出信道的电压状态；其中，所述电压状态包括欠压状态、过压状态以及稳定状态；驱动单元的输出信道的电压状态是所述驱动单元根据预设时间内的输出信道的电压和稳定工作电压范围确定的；
    根据所述任意个驱动单元的各个输出信道的电压状态调整所述背光单元中所有发光单元的供电端的电压。
  2. 根据权利要求1所述的控制方法，其特征在于，根据所述任意个驱动单元的各个输出信道的电压状态调整所述背光单元中所有发光单元的供电端的电压，具体包括：
    统计各个电压状态对应的输出信道的数量，根据各个电压状态对应的输出信道的数量和所述各个电压状态的优先级确定所述背光单元的电压状态；
    根据所述背光单元的电压状态调整所述背光单元中所有发光单元的供电端的电压。
  3. 根据权利要求2所述的控制方法，其特征在于，所述根据各个电压状态对应的输出信道的数量和所述各个电压状态的优先级确定所述背光单元的电压状态，具体包括以下任意一项：
    当一个电压状态对应的输出信道的数量最大时，将输出信道的数量为最大的电压状态作为所述背光单元的电压状态；
    当多个电压状态对应的输出信道的数量最大时，从输出信道的数量最大的多个电压状态中选择优先级更高的作为所述背光单元的电压状态；
    从各个电压状态中选择对应的输出信道的数量满足临界条件作为备选电压状态；并将优先级最高的所述备选电压状态作为所述背光单元的电压状态。
  4. 根据权利要求2所述的控制方法，其特征在于，所有发光单元的供 电端连接到公共电源端；根据所述背光单元的电压状态调整背光单元中所有的发光单元的供电端的电压，具体包括：
    根据所述背光单元的电压状态调整所述公共电源端的电压，以实现对背光单元中所有的发光单元的供电端的电压的调整。
  5. 根据权利要求4所述的控制方法，其特征在于，所述显示设备还包括电压转换模块，所述电压转换模块连接到公共电源端；根据所述背光单元的电压状态调整所述公共电源端的电压，具体包括：
    根据所述背光单元的电压状态生成调节指令，其中，所述调节指令用于控制电压转换模块调整所述公共电源端的电压。
  6. 根据权利要求5所述的控制方法，其特征在于，根据所述背光单元的电压状态生成调节指令，具体包括：
    当所述背光单元的电压状态为过压状态时生成降压指令；所述降压指令用于控制电压转换模块降低所述公共电源端的电压；
    当所述背光单元的电压状态为欠压状态时生成升压指令；所述升压指令用于控制电压转换模块提高所述公共电源端的电压；
    当所述背光单元的电压状态为稳定状态时生成保持指令，其中，所述保持指令用于控制电压转换模块保持所述公共电源端的电压。
  7. 根据权利要求1至6中任意一项所述的控制方法，其特征在于，所述方法还包括：
    针对每个输出信道，当所述输出信道的电压大于所述稳定工作电压范围的上边界，则所述输出信道处于过压状态；
    当所述输出信道的电压小于所述稳定工作电压范围的下边界，则所述输出信道处于欠压状态；
    当所述输出信道的电压位于所述稳定工作电压范围内，则所述输出信道处于稳定状态。
  8. 一种调光控制器，包括：处理器，以及与所述处理器通信连接的存储器；
    所述存储器存储计算机执行指令；
    所述处理器执行所述存储器存储的计算机执行指令，以实现如权利要求1至7中任一项所述的控制方法。
  9. 一种显示设备，其特征在于，包括如权利要求8所述的调光控制器和背光单元；每个背光单元包括任意个模块，每个模块包括多个驱动单元和多个发光单元，每个所述驱动单元的一个输出信道与一个发光单元的控制端连接；每个驱动单元还与所述调光控制器连接。
  10. 根据权利要求9所述的显示设备，其特征在于，所述显示设备还包括电压转换模块，所述电压转换模块与所述调光控制器连接，所述电压转换模块还与公共电源端连接，所有发光单元的供电端连接到所述公共电源端。
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