WO2023206333A1 - 显示驱动系统、方法和显示装置 - Google Patents

显示驱动系统、方法和显示装置 Download PDF

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Publication number
WO2023206333A1
WO2023206333A1 PCT/CN2022/090189 CN2022090189W WO2023206333A1 WO 2023206333 A1 WO2023206333 A1 WO 2023206333A1 CN 2022090189 W CN2022090189 W CN 2022090189W WO 2023206333 A1 WO2023206333 A1 WO 2023206333A1
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WIPO (PCT)
Prior art keywords
driving
light
units
emitting
display
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PCT/CN2022/090189
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English (en)
French (fr)
Inventor
于超
管恩慧
万中魁
程鑫轶
冷长林
姜幸群
夏友祥
Original Assignee
京东方科技集团股份有限公司
京东方智慧物联科技有限公司
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Application filed by 京东方科技集团股份有限公司, 京东方智慧物联科技有限公司 filed Critical 京东方科技集团股份有限公司
Priority to PCT/CN2022/090189 priority Critical patent/WO2023206333A1/zh
Priority to CN202280001046.8A priority patent/CN117501339A/zh
Publication of WO2023206333A1 publication Critical patent/WO2023206333A1/zh

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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
    • 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
    • G09G3/22—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 using controlled light sources
    • G09G3/30—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 using controlled light sources using electroluminescent panels
    • G09G3/32—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 using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]

Definitions

  • the present disclosure relates to the field of display technology, and in particular to a display driving system, method and display device.
  • the display device includes a light panel and a display drive system.
  • the light panel includes a plurality of light-emitting units arranged in an array. Each light-emitting unit includes a plurality of sub-units for emitting light of different colors.
  • the plurality of light-emitting units are divided into multiple light-emitting unit groups according to positions, and each light-emitting unit group includes multiple light-emitting units.
  • the display driving system includes multiple driving ICs (Integrated Circuits). Each driving IC is connected to all the light-emitting units in a light-emitting unit group and is used to drive the connected light-emitting units to emit light.
  • the driver IC in the display drive system fails or the signal line connected to the driver IC fails, at least some of the light-emitting units of the light panel will not emit light normally, resulting in abnormal display of the display device and low reliability of the display drive system.
  • Embodiments of the present disclosure provide a display driving system, a method and a display device, which can improve the reliability of the display driving system.
  • the technical solutions are as follows:
  • the display driving system includes: a plurality of driving units and a control unit; the plurality of driving units are connected to a light panel, and at least one of the plurality of driving units drives The unit is used to drive the light panel to emit light during the display stage; the control unit is connected to the plurality of driving units respectively, and is used to detect whether there is an abnormality in the driving unit that drives the light panel to emit light; during the operation of the first driving unit When the state is an abnormal state, the lamp panel is driven to emit light through a second drive unit, wherein the first drive unit is at least one of the drive units that is driving the lamp panel to emit light, and the second drive unit is used to drive the lamp panel to emit light.
  • the driving unit is at least one driving unit among the plurality of driving units except the first driving unit.
  • the driving unit that is driving the light panel to emit light includes at least two driving units among the plurality of driving units, and the light panel includes a plurality of light-emitting units arranged in an array, each Each of the light-emitting units includes a plurality of light-emitting devices for emitting light of different colors; the at least two driving units are configured to output a first driving current to a target light-emitting device during the display stage to drive the light panel.
  • the second drive unit is configured to output a second drive current to the target light-emitting device during the display stage to drive the light panel to display the Target screen; wherein the target light-emitting device is any light-emitting device on the lamp board, and the sum of the second driving currents output by the second driving unit is equal to the first driving current output by the at least two driving units. Sum.
  • the magnitudes of the first driving currents output by the at least two driving units to the target light-emitting device are the same or different.
  • each of the driving units includes a plurality of driving ICs and a plurality of signal lines, each of the signal lines is connected to a plurality of the driving ICs, and the control unit is respectively connected to the plurality of signal lines;
  • the control unit is configured to detect status information of the signal on the connected signal line, and determine whether there is an abnormality in the driving unit that is driving the light panel to emit light according to the status information.
  • each of the driving IC groups included in each of the driving units are divided into a plurality of driving IC groups, each of the driving IC groups includes a plurality of driving ICs arranged along the first direction, and the The driving IC groups of the plurality of driving units are alternately arranged in the second direction.
  • the light panel includes a plurality of light-emitting units arranged in an array, each light-emitting unit includes a plurality of light-emitting devices for emitting light of different colors; one of the plurality of driving units drives The unit is configured to drive the light-emitting device corresponding to the first color among the plurality of light-emitting units to emit light during the fault detection stage; the other driving unit among the plurality of driving units is configured to drive, during the fault detection stage, Driving the light-emitting device corresponding to the second color in the plurality of light-emitting units to emit light; wherein the first color and the second color are different.
  • the light panel includes a plurality of light-emitting units arranged in an array, each light-emitting unit including a plurality of light-emitting devices for emitting light of different colors; one of the plurality of driving units
  • the driving unit is configured to drive the light-emitting devices corresponding to the third color in the plurality of light-emitting units to emit light during a first time period of the fault detection phase, and to stop driving the plurality of light-emitting devices during the second time period of the fault detection phase.
  • the light-emitting device corresponding to the third color in the light-emitting unit emits light; another driving unit among the plurality of driving units is configured to drive the light-emitting device corresponding to the fourth color among the plurality of light-emitting units during the second time period. glow.
  • Embodiments of the present disclosure also provide a display driving method.
  • the display driving method includes: during the display stage, driving the light panel to emit light through at least one driving unit among a plurality of driving units, the plurality of driving units are all connected with the The lamp panel is connected; detecting the working status of the driving unit that is driving the lamp panel to emit light; when the working status of the first driving unit is an abnormal state, driving the lamp panel to emit light through the second driving unit, wherein the first driving unit
  • the driving unit is at least one of the driving units that is driving the light panel to emit light
  • the second driving unit is at least one of the plurality of driving units except the first driving unit.
  • driving the light panel to emit light through at least one of the plurality of driving units during the display stage includes: during the display stage, driving the lamp panel to emit light through at least one of the plurality of driving units.
  • the target light-emitting device outputs a first driving current to drive the lamp panel to display the target screen; when the working state of the first driving unit is an abnormal state, driving the lamp panel to emit light through the second driving unit includes: when the working state of the first driving unit is an abnormal state, When the working state of the first driving unit is an abnormal state, the second driving unit outputs a second driving current to the target light-emitting device to drive the lamp panel to display the target screen; wherein the target emits light.
  • the device is any light-emitting device on the lamp board, and the sum of the second driving currents output by the second driving unit is equal to the sum of the first driving currents output by the at least two driving units.
  • the magnitudes of the first driving currents output by the at least two driving units to the target light-emitting device are the same or different.
  • each of the driving units includes a plurality of driving ICs and a plurality of signal lines, and each of the signal lines is connected to a plurality of the driving ICs; the detection of the driving unit that is driving the light panel to emit light is The working status includes: detecting the status information of the signals on the plurality of signal lines; and determining the working status of the driving unit that is driving the light panel to emit light according to the status information of the signals.
  • the light panel includes a plurality of light-emitting units arranged in an array, and each light-emitting unit includes a plurality of light-emitting devices for emitting light of different colors.
  • the display driving method further includes: during the fault detection stage, driving the light-emitting device corresponding to the first color in the plurality of light-emitting units to emit light through one of the driving units. ; In the fault detection stage, the light-emitting device corresponding to the second color in the plurality of light-emitting units is driven by another driving unit of the plurality of driving units to emit light; wherein the first color and the second color The colors are different.
  • the display driving method further includes: during the first time period of the fault detection phase, driving a third of the plurality of light-emitting units through one of the plurality of driving units.
  • the light-emitting device corresponding to the color emits light; in the second time period of the fault detection phase, the light-emitting device corresponding to the third color in the plurality of light-emitting units is stopped to be driven to emit light, and is driven by another one of the plurality of driving units.
  • the unit drives the light-emitting device corresponding to the fourth color in the plurality of light-emitting units to emit light.
  • An embodiment of the present disclosure also provides a display device, which includes a light panel and any one of the aforementioned display driving systems, and the display driving system is connected to the light panel.
  • An embodiment of the present disclosure also provides a display driving device, which includes a processor and a memory; the memory is used to store a computer program, and the processor is used to execute the computer program in the memory to implement any of the foregoing.
  • a display driving device which includes a processor and a memory; the memory is used to store a computer program, and the processor is used to execute the computer program in the memory to implement any of the foregoing.
  • Embodiments of the present disclosure also provide a computer-readable storage medium.
  • the storage medium includes at least one instruction.
  • the at least one instruction is executed by a processor, any of the foregoing display driving methods is executed.
  • An embodiment of the present disclosure also provides a computer program product, including a computer program that implements any of the foregoing display driving methods when executed by a processor.
  • the display driving system of the embodiment of the present disclosure has multiple driving units that can independently drive the light panel to emit light
  • the control unit detects that at least one of the driving units that is driving the light panel to emit light (i.e., the first driving unit )
  • the lamp panel can be driven to emit light by a driving unit other than the first driving unit (ie, the second driving unit), which improves the reliability of the display driving system.
  • Figure 1 is a schematic diagram of a display device in the related art
  • Figure 2 is a schematic top structural view of a partial area of the display device shown in Figure 1;
  • Figure 3 is a schematic structural diagram of a display driving system provided by an embodiment of the present disclosure.
  • Figure 4 is a schematic structural diagram of a display driving system provided by an embodiment of the present disclosure.
  • Figure 5 is a schematic diagram of the connection relationship between the driving IC, the signal line and the light-emitting unit provided by the embodiment of the present disclosure
  • Figure 6 is a schematic structural diagram of another display driving system provided by an embodiment of the present disclosure.
  • Figure 7 is a flow chart of a display driving method provided by an embodiment of the present disclosure.
  • Figure 8 is a schematic process diagram of a fault detection process provided by an embodiment of the present disclosure.
  • Figure 9 is a schematic structural diagram of a fault detection device provided by an embodiment of the present disclosure.
  • Figure 10 is a schematic structural diagram of another fault detection device provided by an embodiment of the present disclosure.
  • FIG. 1 is a schematic diagram of a display device in the related art.
  • the display device includes a light panel 11 and a display driving system 12 .
  • the light panel 11 includes a first substrate 110 and a plurality of light emitting units 111 located on a first surface of the first substrate 110 .
  • the display driving system 12 includes a plurality of driving ICs 121 located on the second surface of the first substrate 110 .
  • the first surface and the second surface are two opposite surfaces of the first substrate 110 .
  • the plurality of driver ICs 121 are directly connected to the second surface of the first substrate.
  • a plurality of driver IC 121 arrays are arranged on a second substrate (the second substrate with integrated driver ICs may be referred to as a driver board), and are connected to the light panel 11 through the second substrate.
  • FIG. 2 is a schematic top structural view of a partial area of the display device shown in FIG. 1 .
  • multiple light-emitting units 111 are arranged in an array to form a light-emitting unit array.
  • Each light-emitting unit 111 includes a light-emitting device 1111 for emitting light of different colors.
  • each light emitting unit 111 includes a first light emitting device, a second light emitting device, and a third light emitting device. Wherein, the first light-emitting device is used to emit blue light, the second light-emitting device is used to emit red light, and the third light-emitting device is used to emit green light.
  • the light emitting device 1111 is a current driving device.
  • the light emitting device 1111 is an LED (Light Emitting Diode) chip, such as a mini LED chip or a micro LED chip.
  • the first substrate 110 is a PCB (Printed Circuit Board) or other type of substrate capable of routing signal lines, such as a glass substrate.
  • the display device is an LED display device.
  • the light-emitting unit array is divided into multiple light-emitting unit sub-arrays, and the dotted box in Figure 2 represents one of the light-emitting unit sub-arrays.
  • the light-emitting unit sub-array includes 8 rows and 5 columns of light-emitting units 111.
  • the light-emitting unit sub-array is a virtual division of the light-emitting unit array.
  • Each driving IC is connected to all the light-emitting units in a light-emitting unit sub-array, and is used to drive the light-emitting units in the connected light-emitting unit sub-array to emit light.
  • the display driver system also includes signal lines connected to the driver IC.
  • the signal lines are used to provide corresponding signals to the driver IC, thereby controlling the light panel to emit light.
  • embodiments of the present disclosure provide a display driving system, which includes a plurality of driving units. Multiple driving units can independently drive the light panel to emit light. Moreover, at least two driving units among the plurality of driving units can jointly drive the light panel to emit light.
  • multiple driving units can At least one driving unit other than the first driving unit drives the light panel (which may be called a second driving unit) to emit light, thereby improving the reliability of the operation of the display device.
  • a plurality of driving units refers to at least two driving units.
  • a display driving system includes two driving units.
  • the display driving system 300 includes two driving units 310 and a control unit 320 .
  • the two driving units 310 are both connected to the light panel, and at least one of the two driving units 310 is used to drive the light panel to emit light during the display stage.
  • the two driving units 310 can drive the light panel to emit light at the same time or drive the light panel to emit light alone.
  • the control unit 320 is connected to the two driving units 310 respectively, and is used to detect the working status of the driving unit 310 that is driving the light panel to emit light.
  • the control unit is also used to drive the lamp panel to emit light through the second drive unit when an abnormality in the first drive unit is detected, where the first drive unit is one of the drive units 310 that is driving the lamp panel to emit light.
  • the second driving unit is the other driving unit 310 of the two driving units 310 except the first driving unit.
  • the display driving system of the embodiment of the present disclosure has two driving units that can independently drive the light panel to emit light, when the control unit detects an abnormality in one of the driving units that is driving the light panel to emit light, it can determine whether there is an abnormality or not.
  • Another drive unit drives the light panel to emit light, which improves the reliability of the display drive system.
  • two driving units 310 drive the light panel to emit light at the same time, so that the light panel displays a target image.
  • the two driving units are configured to output a first driving current to the light-emitting devices in each light-emitting unit corresponding to the target screen to drive each light-emitting device of the light panel to emit light.
  • the current required by the light-emitting devices of each light-emitting unit can be allocated to the two driving units 310 according to a set ratio, and the two driving units 310 output the first driving current to each light-emitting device according to their respective corresponding ratios.
  • the setting ratio is 1:1, that is, the magnitude of the first driving current output by the two driving units 310 to the target light-emitting device is the same. In this way, the first driving current output by the two driving units 310 to the target light-emitting device is half of the current required by the target light-emitting device.
  • the set ratio may also be a ratio other than 1:1, that is, the magnitudes of the first driving currents output by the two driving units 310 to the target light-emitting devices are different.
  • the setting ratio is 3:7 or 2:3, etc.
  • the ratio is set to 3:7, the first driving current output by one driving unit to the target light-emitting device is 30% of the current required by the target light-emitting device, and the first driving current output by the other driving unit to the target light-emitting device is 70% of the current required by the target light-emitting device.
  • the target light-emitting device is any light-emitting device on the lamp board.
  • the second driving unit is configured to output a second driving current to the target light-emitting device to drive the light panel to display the target screen when the working state of the first driving unit is an abnormal state.
  • the second driving current output by the second driving unit is equal to the sum of the first driving currents output by the two driving units.
  • the second driving unit may include a driving unit that is driving the light panel to emit light and a driver that is not driving the light panel to emit light. At least one of the units.
  • the two driving units jointly drive the light panel to emit light.
  • the working status of one of the driving units is abnormal, it is only necessary to stop the abnormal driving unit and increase the driving current output by the other driving unit in normal working status.
  • the light panel can still operate according to the two requirements. It lights up when the drive unit is working normally. Since the second driving unit always drives the light panel to emit light during the process of switching the first driving unit to the second driving unit, the display screen of the light panel will not be interrupted, which is conducive to seamless switching of display effects and further ensures display effect.
  • At least one of the two driving units 201 is further configured to adjust the driving current output to the target light-emitting device to fine-tune the display effect of the light panel. For example, while keeping the magnitude of the driving current output by one driving unit to the target light-emitting device unchanged, the driving current output by one driving unit to the target light-emitting device is increased or decreased by a set value.
  • the current adjustment granularity corresponding to each driver IC i.e., the minimum adjustment amount that can be used for each adjustment, for example, 5% of the maximum driving current corresponding to each driver IC, etc.
  • the two driving units respectively output driving currents to the target light-emitting device, which can increase the adjustable level of the brightness of the target light-emitting device, thereby more finely adjusting the display effect of the light panel.
  • the driving unit that is driving the light panel to emit light includes only one driving unit 310 . That is, at the same time, only one driving unit 310 drives the light panel to emit light.
  • the driving unit 310 is configured to output a first driving current to the light-emitting devices in each light-emitting unit corresponding to the target screen to drive the light panel to display the target screen.
  • the second driving unit is configured to output a second driving current to the light-emitting devices in each light-emitting unit corresponding to the target screen when the working state of the first driving unit (that is, the working driving unit) is an abnormal state, and to the same light-emitting device.
  • the second drive current output by the device is equal to the first drive current.
  • the second driving unit when there is an abnormality in the first driving unit, the second driving unit is used to drive the light panel to emit light. In this way, the light panel can quickly restore the display without waiting for the first driving unit to be repaired before it can emit light normally.
  • Each driving unit 310 includes a plurality of driving ICs 311, and each driving IC 311 is used to drive the light-emitting units 111 in a light-emitting unit sub-array to emit light.
  • each driving IC 311 is used to drive the light-emitting units 111 in a light-emitting unit sub-array to emit light.
  • there is a corresponding driving IC 311 in each driving unit 310 that is, each light-emitting unit array is connected to two driving ICs 311 belonging to different driving units 310 respectively.
  • each driving unit 310 includes a plurality of driving IC groups, each driving IC group includes a plurality of driving ICs 311 arranged along the first direction x, and the driving IC groups of the two driving units are arranged in the second direction Arrange alternately on y.
  • two driving ICs 311 driving the same light-emitting unit sub-array can be arranged near the corresponding light-emitting unit sub-array to facilitate wiring.
  • one driving unit includes driving IC1 to driving IC30; the other driving unit includes driving IC1' to driving IC30'.
  • driver IC1 to driver IC5, driver IC6 to driver IC10, driver IC11 to driver IC15, driver IC16 to driver IC20, driver IC21 to driver IC25, and driver IC26 to driver IC30 are each a driver IC group; similarly, driver IC1' ⁇ Driver IC5', Driver IC6' ⁇ Driver IC10', Driver IC11' ⁇ Driver IC15', Driver IC16' ⁇ Driver IC20', Driver IC21' ⁇ Driver IC25' and Driver IC26' ⁇ Driver IC30' are one driver IC group respectively.
  • the five driver ICs in the same driver IC group are arranged in the left and right directions, and all the driver IC groups of the two driver units are arranged alternately in the up and down directions.
  • the driving unit also includes a plurality of signal lines, and each driving IC is connected to at least one signal line.
  • the plurality of signal lines include at least one of a control line, a data line and a power line.
  • the control lines include but are not limited to clock (DCLK) signal lines, clock data latch (LE) signal lines, row feed (ROW) signal lines, etc.
  • the number of each signal line is arranged according to actual needs. This disclosure does not limit this and can be set to one or more.
  • the second surface of the substrate can be divided into at least two areas arranged along the second direction, and two groups of signal lines and a plurality of driver ICs are provided in each area, and each group of signal lines belongs to one driver unit. Multiple driver ICs are connected.
  • the second surface of the substrate is divided into two areas arranged along the second direction.
  • the driving IC1 to driving IC15 of the driving unit A and the driving IC1 ′ to driving IC 15 ′ of the driving unit B are located in one area. area; the driving ICs 16 to 30 of the driving unit A and the driving ICs 16 ′ to 30 ′ of the driving unit B are located in another area.
  • driver IC1 to driver IC15, driver IC1' to driver IC15', driver IC16 to driver IC30, and driver IC16' to driver IC30' are respectively connected to a set of signal lines.
  • the number of drive ICs contained in each drive unit will also increase. If all the drive ICs in a drive unit are connected through a set of signal lines, the transmission distance will be limited. Limitation, the signal transmission in the corresponding signal line will not be able to meet the performance requirements, thus affecting the display effect. Therefore, in the embodiment of the present disclosure, by connecting multiple driving ICs belonging to the same driving unit in each area to a set of signal lines, the length of the signal lines can be shortened, so that the signals can be transmitted normally in the corresponding signal lines. transmission.
  • each group of signal lines is connected to the driver ICs in multiple driver IC groups, and each group of signal lines is connected to multiple driver IC groups and is spaced apart along the second direction, in order to facilitate the wiring of the signal lines, the signal lines are in the shape of Z. Glyph routing.
  • the signal lines corresponding to driver IC1 to driver IC15 first extend from left to right, then extend downward for a while, then extend from right to left, then extend downward for a while, and then extend from left to right. extend.
  • each driving IC is connected to each light-emitting unit in the corresponding light-emitting unit sub-array.
  • the following is an introduction to the connection method between each driver IC and the corresponding light-emitting unit.
  • Figure 5 is a schematic diagram of the connection relationship between the driving IC, the signal line and the light-emitting unit provided by the embodiment of the present disclosure.
  • Figure 5 illustrates this by taking the light-emitting unit as an LED lamp bead as an example.
  • a light-emitting unit includes three light-emitting devices, and the first electrode (such as anode) of the light-emitting device of each row of light-emitting units is connected to the switch circuit on the lamp board.
  • the switch circuit is used to control the light-emitting unit array to operate in a row scanning manner.
  • the switching circuit includes a plurality of switching devices, each switching device is connected to the first pole of each light-emitting device of a row of light-emitting units.
  • the switching device When the switching device is turned on, the row of light-emitting devices can be lit.
  • the switching device is a transistor.
  • the control electrode of the transistor is connected to the scanning signal line, the first electrode of the transistor is connected to the power signal line, and the second electrode of the transistor is connected to the light-emitting devices in a row of light-emitting units.
  • each driver IC 311 has multiple input pins and multiple output pins. Among them, each input pin is connected to a signal line. Each driver IC 311 is connected to multiple control lines respectively, and the multiple driver ICs are connected in series through one data line. The data line is used to transmit serial data. The driver IC obtains the data at the corresponding position in the serial data according to the configuration information, thereby obtaining the image data corresponding to the driver IC.
  • one light-emitting unit includes three light-emitting devices, in Figure 5, the three output pins of the driver IC are connected to one light-emitting unit. Each output pin is used to connect to a first pole (eg cathode) of a light emitting device.
  • the driving IC 311 is used to output a driving current from the target output pin according to the signal input by the signal line to drive the light-emitting device connected to the target output pin to emit light.
  • each light-emitting unit can be connected to five adjacent light-emitting units in the same row of light-emitting units.
  • the light-emitting devices i.e. 15 light-emitting devices
  • the remaining 1 output pin can be left vacant.
  • control unit 320 is connected to at least one signal line, for example, connected to all signal lines, and is used to determine the working status of the working driving unit according to the status information of the signals on each signal line.
  • the status information of the signal is used to indicate whether there is an abnormality in the signal on the signal line. If there is an abnormality in the signal on the signal line, it means that the working status of the corresponding drive unit is abnormal. If there is no abnormality in the signal on the signal line, it means that the working status of the corresponding drive unit is normal.
  • control unit 320 may determine whether there is an abnormality in the signal on the signal line using at least one of the following methods:
  • Method 1 Whether the duration of the signal's level status without change exceeds the first set duration; if the duration of the signal's level status without change exceeds the first set duration, it indicates that there is an abnormality in the signal; if the signal's level status does not change If the duration of the change does not exceed the first set duration, it means that there is no abnormality in the signal.
  • Method 2 The level signal is not transmitted for longer than the second set time on the signal line; if the level signal is not transmitted for longer than the first set time, it means there is an abnormality in the signal; if the level signal is not transmitted for longer than the first set time If it exceeds the first set time, it means that there is no abnormality in the signal.
  • Method 3 The jump amplitude of the signal transmitted by the signal line exceeds the jump amplitude threshold; if the jump amplitude of the signal exceeds the jump amplitude threshold, it means that there is an abnormality in the signal; if the jump amplitude of the signal does not exceed the jump amplitude threshold, The amplitude threshold indicates that there is no abnormality in the signal.
  • Method 4 The amplitude of the signal transmitted by the signal line exceeds the amplitude threshold; if the amplitude of the signal exceeds the amplitude threshold, it means that there is an abnormality in the signal; if the amplitude of the signal does not exceed the amplitude threshold, it means that there is no abnormality in the signal.
  • the first set duration and the second set duration can be set according to actual needs, and this disclosure does not limit this.
  • the driving unit 310, the control unit 320, and the signal line 330 are all located on the same substrate.
  • the control unit 320 can be implemented using a microcontroller, MCU (Microcontroller Unit, microcontroller), CPLD (Complex Programmable Logic Device, complex programmable logic device) or FPGA (Field Programmable Gate Array, field programmable gate array), etc. , this disclosure does not limit this.
  • FIG. 6 is a schematic structural diagram of another driving display system provided by an embodiment of the present disclosure.
  • the display driving system also includes two direct current-to-direct current (DC-DC) conversion modules 340 , respectively used to supply power to a corresponding driving unit 310 .
  • the control terminal (also called the enable terminal) of the DC-DC conversion module 340 is connected to the control unit 320 .
  • the control unit 320 controls the operation of the two DC-DC conversion modules, so that both driving units 310 drive the light panel to emit light.
  • control unit 320 When the control unit 320 detects that the working state of the first driving unit is an abnormal state, it controls the DC-DC conversion module 340 corresponding to the first driving unit to stop working, thereby causing the first driving unit to stop working. At the same time, another DC-DC conversion module 340 is maintained to supply power to the second driving unit. Furthermore, the control unit 320 feeds back the fault information to the system control device (for example, the system control board), so that the system control device adjusts the data signal sent to the second driving unit, so that the driving IC in the second driving unit can send light to the target light-emitting device. Increase the drive current. In this way, the switch from the two driving units jointly driving the light panel to emit light to the second driving unit driving the light panel to emit light is completed.
  • system control device for example, the system control board
  • the fault information includes but is not limited to fault time, fault content and fault location.
  • the fault time is used to indicate the time when the fault is detected
  • the fault content can be used to indicate the abnormal type of the signal on the signal line (for example, the duration of no change in signal level exceeds the first set duration, and the duration of no signal exceeds the second set duration etc.)
  • the fault location is used to indicate the faulty drive unit.
  • the display driving system also includes a buffer logic unit 350, the buffer logic unit 350, the driving unit 310 and the control unit 320 are also located on the same substrate.
  • the buffer logic unit 310 is connected to the system control device, and on the other hand, it is connected to the control unit 320 and the drive unit 310 through the signal line 330, so that it can act as a signal circuit between the system control device, the control unit 310 and the drive unit 320. flat conversion and/or data buffering.
  • the display driving system can also be used to drive the light panel to display during the fault detection stage, so as to locate the fault when there is a fault in the display driving system.
  • one of the two driving units is configured to drive the light-emitting device corresponding to the first color among the plurality of light-emitting units to emit light during the fault detection stage; the other of the two driving units drives The unit is configured to drive the light-emitting device corresponding to the second color in the plurality of light-emitting units to emit light during the fault detection stage.
  • the first color and the second color are different.
  • each light-emitting unit there may be one light-emitting device corresponding to the first color; in each light-emitting unit, there may also be one light-emitting device corresponding to the second color.
  • the first color is red and the second color is blue; for another example, the first color is blue and the second color is green.
  • the two driving units drive the light-emitting devices corresponding to different colors in each light-emitting unit of the light panel to emit light.
  • each light-emitting unit emits light mixed with the light of the first color and the second color.
  • the color emitted by each light-emitting unit on the light board it can be determined whether the display drive system is faulty and the fault information in the event of a fault.
  • the fault information is used to indicate the fault location, which includes but is not limited to the faulty drive unit and the faulty drive IC.
  • each light-emitting unit emits light that is a mixture of light of the first color and light of the second color, it means that there is no fault in the display driving system.
  • the driving IC corresponding to this part of the light-emitting units for driving the light-emitting units to emit light of the second color is faulty.
  • the driving IC corresponding to this part of the light-emitting units for driving the light-emitting units to emit light of the first color is faulty.
  • one of the plurality of driving units is configured to drive the light-emitting device corresponding to the third color among the plurality of light-emitting units to emit light during the first period of the fault detection phase. , and in the second time period of the fault detection phase, stop driving the light-emitting device corresponding to the third color in the plurality of light-emitting units to emit light; another driving unit in the plurality of driving units is configured to emit light in the first For two time periods, the light-emitting devices corresponding to the fourth color in the plurality of light-emitting units are driven to emit light.
  • the second time period is a time period after the first time period.
  • the third color and the fourth color may be the same or different.
  • the third color may be the same color as the light emitted by a single light-emitting device, such as red, blue, or green; in other examples, the third color may be mixed with multiple light-emitting devices in the same light-emitting unit.
  • the color of the emitted light is the same; for example, the third color can be purple, which can be obtained by mixing the light emitted by a red light emitting device and a blue light emitting device.
  • the system control board can be connected to the control unit 320 through the I2C bus (such as the SCL line and SDA line in Figure 5), and send a fault detection instruction to the control unit 320 through the I2C bus.
  • the fault detection instruction is used to instruct the control unit.
  • 320 enters the fault detection stage.
  • the control unit 320 After receiving the fault detection instruction, the control unit 320 enters the fault detection stage.
  • the system control board sends the voltage data corresponding to the color to be displayed to each drive IC in the drive unit through the sending card and receiving card.
  • the drive IC controls the corresponding light-emitting device to emit light according to the voltage data.
  • system control board can also be connected to the control unit through other methods, such as through SPI (serial peripheral interface, synchronous serial interface) or RS232.
  • SPI serial peripheral interface, synchronous serial interface
  • RS232 RS232
  • the display driving system includes more than two driving units, reference may be made to the case of including two driving units, which will not be described in detail in this disclosure.
  • An embodiment of the present disclosure also provides a display device, which includes a light panel and a driving display system.
  • the driving display system is used to drive the light panel to emit light.
  • the relevant content of driving the display system please refer to the foregoing embodiments, and the detailed description is omitted here.
  • display devices include but are not limited to displays and terminal devices with display functions such as mobile phones, tablet computers, and laptop computers.
  • the display can be a large outdoor display, such as a ground screen, a facade display screen or various special-shaped creative screens. It is especially suitable for scenes where the display cannot be interrupted, such as large-scale performances and events.
  • An embodiment of the present disclosure also provides a display driving method.
  • the display driving method can be executed by the aforementioned control unit.
  • the driving display method includes:
  • the light panel is driven to emit light by at least one driving unit among a plurality of driving units, and the plurality of driving units are all connected to the light panel;
  • the working state includes a normal state and an abnormal state.
  • the normal status indicates that the drive unit can drive the light panel to emit light normally.
  • the abnormal state means that the drive unit cannot drive the light panel to emit light normally, causing the light panel to display abnormally.
  • the second driving unit is used to drive the lamp panel to emit light.
  • the first driving unit is at least one of the driving units that is driving the light panel to emit light
  • the second driving unit is all driving units included in the display system except the first driving unit. At least one drive unit other than the drive unit.
  • S1 includes: during the display stage, outputting a first driving current to the target light-emitting device through at least two driving units to drive the light panel to display the target screen; correspondingly, S3 includes: when the When the working state of the first driving unit is an abnormal state, the second driving unit outputs a second driving current to the target light-emitting device to drive the lamp panel to display the target screen; wherein the target emits light.
  • the device is any light-emitting device on the lamp board, and the sum of the second driving currents output by the second driving current is equal to the sum of the first driving currents output by the at least two driving units.
  • the magnitudes of the first driving currents output by the at least two driving units to the target light-emitting device are the same or different.
  • S1 includes: during the display stage, outputting a first driving current to the target light-emitting device through a driving unit to drive the light panel to display the target screen;
  • S3 includes: when the first driving unit When the working state is an abnormal state, a second driving current is output to the target light-emitting device through the second driving unit to drive the lamp panel to display the target screen; wherein the target light-emitting device is any one of the target light-emitting devices on the lamp panel.
  • the second driving current is equal to the sum of the first driving currents.
  • each of the driving units includes a plurality of driving ICs and a plurality of signal lines, and each of the signal lines is connected to a plurality of the driving ICs; the detection of the driving unit that is driving the light panel to emit light is The working status includes: detecting the status information of the signals on the plurality of signal lines; and determining the working status of the driving unit that is driving the light panel to emit light according to the status information of the signals.
  • the display driving method further includes: during the fault detection stage, driving the light-emitting device corresponding to the first color in the plurality of light-emitting units to emit light through one of the driving units. ; In the fault detection stage, the light-emitting device corresponding to the second color in the plurality of light-emitting units is driven by another driving unit of the plurality of driving units to emit light; wherein the first color and the second color The colors are different.
  • the display driving method further includes: during the first time period of the fault detection phase, driving a third of the plurality of light-emitting units through one of the plurality of driving units.
  • the light-emitting device corresponding to the color emits light; in the second time period of the fault detection phase, the light-emitting device corresponding to the third color in the plurality of light-emitting units is stopped to be driven to emit light, and is driven by another one of the plurality of driving units.
  • the unit drives the light-emitting device corresponding to the fourth color in the plurality of light-emitting units to emit light.
  • Figure 8 shows a fault detection process.
  • the fault detection process includes: in S81, the sending card issues a fault detection instruction; in S82, the receiving card receives the fault detection instruction, enters the fault detection mode, sends the fault detection instruction to the detection unit and The driving unit sends detection data, which corresponds to the color to be displayed; in S83, the control unit turns on the first DC-DC conversion module and closes the second DC-DC conversion module.
  • the first DC-DC conversion module and the second The DC-DC conversion modules are respectively the two aforementioned DC-DC conversion modules; in S84, the drive unit connected to the first DC-DC conversion module drives the light panel to display the third color. If the color display is abnormal, the fault information is reported and Send the display unit for repair.
  • the control unit turns on the second DC-DC conversion module and turns off the first DC-DC conversion module.
  • the drive unit connected to the second DC-DC conversion module drives the light panel to display the third color. If the color display is abnormal, a fault message is reported and the display device is sent for repair; if the color display is normal, it means there is no fault. , exit the fault detection process.
  • the display driving device includes a detection module 910 and a control module 920.
  • the control module 920 is used to drive the light panel to emit light through at least one of a plurality of driving units during the display phase, and the plurality of driving units are all connected to the light panel;
  • the detection module 910 is used to detect that all driving units are being driven.
  • the working status of the driving unit for emitting light from the lamp panel; the control module 920 is also configured to drive the lamp panel to emit light through the second driving unit when the detection module 910 detects that the working status of the first driving unit is an abnormal state, wherein,
  • the first driving unit is at least one of the driving units that is driving the lamp panel to emit light, and the second driving unit is at least one of the plurality of driving units except the first driving unit.
  • control module 920 is configured to output a first driving current to the target light-emitting device through at least two driving units among the plurality of driving units in the display stage to drive the light panel to display the target. picture; and when the working state of the first driving unit is an abnormal state, outputting a second driving current to the target light-emitting device through the second driving unit to drive the light panel to display the target picture; wherein , the target light-emitting device is any light-emitting device on the lamp board, and the sum of the second driving currents output by the second driving unit is equal to the sum of the first driving currents output by the at least two driving units.
  • the detection module 910 is configured to detect status information of signals on the plurality of signal lines; and determine the working status of the driving unit that is driving the light panel to emit light according to the status information.
  • control module 920 is also configured to drive the light-emitting device corresponding to the first color in the plurality of light-emitting units through one of the plurality of driving units to emit light during the fault detection stage; In the stage, another driving unit among the plurality of driving units drives the light-emitting device corresponding to the second color in the plurality of light-emitting units to emit light; wherein the first color and the second color are different.
  • control module 920 is also configured to drive the light-emitting device corresponding to the third color in the plurality of light-emitting units to emit light through one of the driving units in the first time period of the fault detection phase; In the second time period of the fault detection phase, stop driving the light-emitting device corresponding to the third color in the plurality of light-emitting units to emit light, and drive the plurality of light-emitting devices through another driving unit in the plurality of driving units.
  • the light-emitting device corresponding to the fourth color in the unit emits light.
  • the display driving device provided in the above embodiment performs display driving
  • only the division of the above functional modules is used as an example.
  • the above function allocation can be completed by different functional modules as needed. That is, the internal structure of the device is divided into different functional modules to complete all or part of the functions described above.
  • the display driving device provided by the above embodiments and the display driving method embodiments belong to the same concept, and the specific implementation process can be found in the method embodiments, which will not be described again here.
  • FIG. 10 is a structural block diagram of a display driving device provided by an embodiment of the present disclosure.
  • the display driving device may be a computer device, and the display driving device 1000 includes: a processor 1001 and a memory 1002.
  • the processor 1001 may include one or more processing cores, such as a 5-core processor, an 8-core processor, etc.
  • the processor 1001 can adopt at least one hardware form among DSP (Digital Signal Processing, digital signal processing), FPGA (Field-Programmable Gate Array, field programmable gate array), and PLA (Programmable Logic Array, programmable logic array).
  • DSP Digital Signal Processing, digital signal processing
  • FPGA Field-Programmable Gate Array, field programmable gate array
  • PLA Programmable Logic Array, programmable logic array
  • the processor 1001 can also include a main processor and a co-processor.
  • the main processor is a processor used to process data in the wake-up state, also called CPU (Central Processing Unit, central processing unit); the co-processor is A low-power processor used to process data in standby mode.
  • Memory 1002 may include one or more computer-readable storage media, which may be non-transitory. Memory 1002 may also include high-speed random access memory, and non-volatile memory, such as one or more disk storage devices, flash memory storage devices. In some embodiments, the non-transitory computer-readable storage medium in the memory 1002 is used to store at least one instruction, and the at least one instruction is used to be executed by the processor 1001 to implement the display driving method provided in the embodiment of the present disclosure. .
  • FIG. 10 does not constitute a limitation on the computer device 1000, and may include more or fewer components than shown, or combine certain components, or adopt different component arrangements.
  • Embodiments of the present disclosure also provide a non-transitory computer-readable storage medium.
  • the computer device can execute the display driving method provided in the embodiment of the present disclosure. .
  • An embodiment of the present disclosure also provides a computer program product, which includes a computer program/instruction.
  • the computer program/instruction is executed by a processor, the display driving method provided in the embodiment of the present disclosure is implemented.
  • Words such as “connected” or “connected” are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect.
  • “Top”, “bottom”, “left”, “right”, “top”, “bottom”, etc. are only used to express relative position relationships. When the absolute position of the described object changes, the relative position relationship may also be Change accordingly.

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Abstract

一种显示驱动系统、方法和显示装置。显示驱动系统（300）包括：多个驱动单元（310）和控制单元（320）；多个驱动单元（310）中的至少一个驱动单元（310）用于在显示阶段驱动灯板发光；控制单元（320）用于检测正在驱动灯板发光的驱动单元（310）的工作状态，以及在第一驱动单元的工作状态为异常状态时，通过第二驱动单元驱动灯板发光，其中，第一驱动单元为正在驱动灯板发光的驱动单元（310）中的至少一个驱动单元（310），第二驱动单元为多个驱动单元（310）中除了第一驱动单元之外的至少一个驱动单元（310）。

Description

显示驱动系统、方法和显示装置 技术领域
本公开涉及显示技术领域，特别涉及一种显示驱动系统、方法和显示装置。
背景技术
显示装置包括灯板和显示驱动系统。灯板包括阵列布置的多个发光单元。每个发光单元包括用于发出不同颜色的光的多个子单元。多个发光单元按照位置分为多个发光单元组，每个发光单元组包括多个发光单元。显示驱动系统包括多个驱动IC(Integrated Circuit，集成电路)，每个驱动IC对应连接一个发光单元组中的所有发光单元，用于驱动所连接的发光单元发光。
如果显示驱动系统中的驱动IC故障或者驱动IC连接的信号线故障，将导致灯板的至少部分发光单元无法正常发光，使得显示装置显示异常，显示驱动系统的可靠性较低。
发明内容
本公开实施例提供了一种显示驱动系统、方法和显示装置，能够用提高显示驱动系统的可靠性。所述技术方案如下：
本公开实施例提供了一种显示驱动系统，所述显示驱动系统包括：多个驱动单元和控制单元；所述多个驱动单元均与灯板连接，所述多个驱动单元中的至少一个驱动单元用于在显示阶段驱动所述灯板发光；所述控制单元分别与所述多个驱动单元连接，用于检测驱动所述灯板发光的驱动单元是否存在异常；在第一驱动单元的工作状态为异常状态时，通过第二驱动单元驱动所述灯板发光，其中，所述第一驱动单元为所述正在驱动所述灯板发光的驱动单元中的至少一个驱动单元，所述第二驱动单元为所述多个驱动单元中除了所述第一驱动单元之外的至少一个驱动单元。
在一种可能的实施方式中，所述正在驱动所述灯板发光的驱动单元包括所述多个驱动单元中的至少两个驱动单元，所述灯板包括阵列布置的多个发光单元，每个所述发光单元包括用于发出不同颜色的光的多个发光器件；所述至少 两个驱动单元被配置为在所述显示阶段向目标发光器件输出第一驱动电流，以驱动所述灯板显示目标画面；所述第二驱动单元被配置为在所述第一驱动单元存在异常时，在所述显示阶段向所述目标发光器件输出第二驱动电流，以驱动所述灯板显示所述目标画面；其中，所述目标发光器件为所述灯板上的任一发光器件，所述第二驱动单元输出的第二驱动电流之和等于所述至少两个驱动单元输出的第一驱动电流之和。
可选地，所述至少两个驱动单元向所述目标发光器件输出的第一驱动电流的大小相同或者不同。
可选地，每个所述驱动单元包括多个驱动IC和多根信号线，每根所述信号线与多个所述驱动IC连接，所述控制单元分别与所述多根信号线连接；所述控制单元被配置为检测所连接的所述信号线上的信号的状态信息，以及根据所述状态信息确定正在驱动所述灯板发光的驱动单元是否存在异常。
示例性地，所述每个所述驱动单元所包含的多个驱动IC被分为多个驱动IC组，每个所述驱动IC组包括沿第一方向排列的多个驱动IC，且所述多个驱动单元的所述驱动IC组在第二方向上交替布置。
在一种可能的实施方式中，所述灯板包括阵列布置的多个发光单元，每个发光单元包括用于发出不同颜色的光的多个发光器件；所述多个驱动单元中的一个驱动单元被配置为在故障检测阶段，驱动所述多个发光单元中第一颜色对应的发光器件发光；所述多个驱动单元中的另一个所述驱动单元被配置为在所述故障检测阶段，驱动所述多个发光单元中第二颜色对应的发光器件发光；其中，所述第一颜色和所述第二颜色不同。
在另一种可能的实施方式中，所述灯板包括阵列布置的多个发光单元，每个发光单元包括用于发出不同颜色的光的多个发光器件；所述多个驱动单元中的一个驱动单元被配置为在故障检测阶段的第一时间段，驱动所述多个发光单元中第三颜色对应的发光器件发光，以及所述故障检测阶段的第二时间段，停止驱动所述多个发光单元中第三颜色对应的发光器件发光；所述多个驱动单元中的另一个驱动单元被配置为在所述第二时间段，驱动所述多个发光单元中第四颜色对应的发光器件发光。
本公开实施例还提供了一种显示驱动方法，所述显示驱动方法包括：在显示阶段，通过多个驱动单元中的至少一个驱动单元驱动灯板发光，所述多个驱 动单元均与所述灯板连接；检测正在驱动所述灯板发光的驱动单元的工作状态；当第一驱动单元的工作状态为异常状态时，通过第二驱动单元驱动所述灯板发光，其中，所述第一驱动单元为所述正在驱动所述灯板发光的驱动单元中的至少一个驱动单元，所述第二驱动单元为所述多个驱动单元中除了所述第一驱动单元之外的至少一个驱动单元。
在一种可能的实施方式中，所述在显示阶段，通过多个驱动单元中的至少一个驱动单元驱动灯板发光，包括：在显示阶段，通过所述多个驱动单元中的至少驱动单元向目标发光器件输出第一驱动电流，以驱动所述灯板显示目标画面；所述当第一驱动单元的工作状态为异常状态时，通过第二驱动单元驱动所述灯板发光，包括：当所述第一驱动单元的工作状态为异常状态时，通过所述第二驱动单元向所述目标发光器件输出第二驱动电流，以驱动所述灯板显示所述目标画面；其中，所述目标发光器件为所述灯板上的任一发光器件，所述第二驱动单元输出的第二驱动电流之和等于所述至少两个驱动单元输出的第一驱动电流之和。
可选地，所述至少两个驱动单元向所述目标发光器件输出的第一驱动电流的大小相同或者不同。
示例性地，每个所述驱动单元包括多个驱动IC和多根信号线，每根所述信号线与多个所述驱动IC连接；所述检测正在驱动所述灯板发光的驱动单元的工作状态，包括：检测所述多根信号线上的信号的状态信息；根据所述信号的状态信息确定所述正在驱动所述灯板发光的驱动单元的工作状态。
示例性地，所述灯板包括阵列布置的多个发光单元，每个发光单元包括用于发出不同颜色的光的多个发光器件。
在一种可能的实施方式中，所述显示驱动方法还包括：在故障检测阶段，通过所述多个驱动单元中的一个驱动单元驱动所述多个发光单元中第一颜色对应的发光器件发光；在所述故障检测阶段，通过所述多个驱动单元中的另一个驱动单元驱动所述多个发光单元中第二颜色对应的发光器件发光；其中，所述第一颜色和所述第二颜色不同。
在另一种可能的实施方式中，所述显示驱动方法还包括：在故障检测阶段的第一时间段，通过所述多个驱动单元中的一个驱动单元驱动所述多个发光单元中第三颜色对应的发光器件发光；在所述故障检测阶段的第二时间段，停止 驱动所述多个发光单元中第三颜色对应的发光器件发光，且通过所述多个驱动单元中的另一个驱动单元驱动所述多个发光单元中第四颜色对应的发光器件发光。
本公开实施例还提供了一种显示装置，该显示装置包括灯板和前述任一种显示驱动系统，所述显示驱动系统与所述灯板连接。
本公开实施例还提供了一种显示驱动装置，该显示驱动装置包括处理器和存储器；所述存储器用于存储计算机程序，所述处理器用于执行所述存储器中的计算机程序，以实现前述任一种显示驱动方法。
本公开实施例还提供了一种计算机可读存储介质，所述存储介质包括至少一条指令，所述至少一条指令被处理器执行时，执行前述任一种显示驱动方法。
本公开实施例还提供了一种计算机程序产品，包括计算机程序，所述计算机程序被处理器执行时实现前述任一种显示驱动方法。
本公开实施例提供的技术方案带来的有益效果至少包括：
由于本公开实施例的显示驱动系统具有可以独立驱动灯板发光的多个驱动单元，所以当控制单元检测到正在驱动所述灯板发光的驱动单元中的至少一个驱动单元(即第一驱动单元)的工作状态异常时，可以通过除了第一驱动单元之外的驱动单元(即第二驱动单元)驱动灯板发光，提高了显示驱动系统的可靠性。
附图说明
为了更清楚地说明本公开实施例中的技术方案，下面将对实施例描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本公开的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1是相关技术中的一种显示装置的示意图；
图2是图1所示显示装置的部分区域的俯视结构示意图；
图3是本公开实施例提供的一种显示驱动系统的结构示意图；
图4是本公开实施例提供的一种显示驱动系统的结构示意图；
图5是本公开实施例提供的驱动IC与信号线以及发光单元的连接关系示意图；
图6是本公开实施例提供的另一种显示驱动系统的结构示意图；
图7是本公开实施例提供的一种显示驱动方法的流程图；
图8是本公开实施例提供的一种故障检测流程的过程示意图；
图9是本公开实施例提供的一种故障检测装置的结构示意图；
图10是本公开实施例提供的另一种故障检测装置的结构示意图。
具体实施方式
为使本公开的目的、技术方案和优点更加清楚，下面将结合附图对本公开实施方式作进一步地详细描述。
为了便于理解本公开实施例，下面先简单介绍显示装置的结构。
图1是相关技术中的一种显示装置的示意图。如图1所示，显示装置包括灯板11和显示驱动系统12。灯板11包括第一基板110和位于第一基板110的第一表面的多个发光单元111。
显示驱动系统12包括多个驱动IC121，多个驱动IC121位于第一基板110的第二表面。这里，第一表面和第二表面为第一基板110的相反的两个表面。在一些示例中，多个驱动IC121直接与第一基板的第二表面相连。在另一些示例中，多个驱动IC121阵列布置在第二基板上(该集成有驱动IC的第二基板可以被称为驱动板)，通过第二基板与灯板11连接。
图2是图1所示显示装置的部分区域的俯视结构示意图。如图2所示，多个发光单元111阵列布置，形成发光单元阵列。每个发光单元111包括用于发出不同颜色光的发光器件1111。例如，每个发光单元111包括第一发光器件、第二发光器件和第三发光器件。其中，第一发光器件用于发蓝光，第二发光器件用于发红光，第三发光器件用于发绿光。
在本公开实施例中，发光器件1111为电流驱动器件。例如，发光器件1111为LED(Light Emitting Diode，发光二极管)芯片，例如迷你(mini)LED芯片或者微(micro)LED芯片。第一基板110为PCB(Printed Circuit Board，印刷电路板)或者其他类型的能够布信号线的基板，例如玻璃基板。显示装置为LED显示装置。
发光单元阵列被分为多个发光单元子阵列，图2中的虚线框表示其中一个 发光单元子阵列。该发光单元子阵列包括8行5列发光单元111。这里，发光单元子阵列是对发光单元阵列的一种虚拟划分。每个驱动IC与一个发光单元子阵列中的所有发光单元连接，用于驱动所连接的发光单元子阵列中的发光单元发光。
除了驱动IC之外，该显示驱动系统还包括与驱动IC连接的信号线，信号线用于向驱动IC提供相应的信号，进而控制灯板发光。
当显示驱动系统故障时，例如信号线故障和/或驱动IC故障时，至少部分发光单元将无法正常发光，导致显示装置显示异常。为此，本公开实施例提供了一种显示驱动系统，该显示驱动系统包括多个驱动单元。多个驱动单元均可以独立驱动灯板发光。并且，多个驱动单元中的至少两个驱动单元可以共同驱动灯板发光。这样，在显示阶段，当正在驱动灯板发光的驱动单元中一部分(例如一个)驱动单元工作状态异常(工作状态异常的驱动单元可以被称为第一驱动单元)时，可以通过多个驱动单元中除了第一驱动单元之外的至少一个驱动单元驱动灯板(可以被称为第二驱动单元)发光，从而提高了显示装置工作的可靠性。
在本公开实施例中，多个驱动单元是指至少两个驱动单元。为了便于说明，下文中将以显示驱动系统包括两个驱动单元为例对本公开实施例进行说明。
下面结合附图对该显示驱动系统的结构和功能进行详细说明。如图3所示，该显示驱动系统300包括两个驱动单元310和控制单元320。其中，两个驱动单元310均与灯板连接，两个驱动单元310中的至少一个驱动单元310用于在显示阶段驱动灯板发光。在本公开实施例中，两个驱动单元310可以同时驱动灯板发光或者单独驱动灯板发光。控制单元320分别与两个驱动单元310连接，用于检测正在驱动灯板发光的驱动单元310的工作状态。控制单元还用于在检测到第一驱动单元存在异常时，通过第二驱动单元驱动灯板发光，其中，第一驱动单元为正在驱动灯板发光的驱动单元310中的一个驱动单元310，第二驱动单元为两个驱动单元310中除了第一驱动单元的另一个驱动单元310。
由于本公开实施例的显示驱动系统具有可以独立驱动灯板发光的两个驱动单元，所以当控制单元检测到正在驱动灯板发光的驱动单元中的一个驱动单元存在异常时，可以通过不存在异常的另一个驱动单元驱动灯板发光，提高了显示驱动系统的可靠性。
在一种可能的实施方式中，两个驱动单元310同时驱动灯板发光，以使灯板显示目标画面。当两个驱动单元310同时驱动灯板发光时，两个驱动单元被配置为向目标画面对应的各个发光单元中的发光器件输出第一驱动电流，以驱动灯板的各个发光器件发光。
这种情况下，可以将各个发光单元的发光器件所需的电流按照设定比例分配给两个驱动单元310，两个驱动单元310按照各自对应的比例向各个发光器件输出第一驱动电流。
在一些示例中，该设定比例为1:1，即两个驱动单元310向目标发光器件输出的第一驱动电流的大小相同。这样，两个驱动单元310输出至目标发光器件的第一驱动电流为该目标发光器件所需电流的一半。
这另一些示例中，该设定比例也可以为1:1以外的其他比例，即两个驱动单元310向目标发光器件输出的第一驱动电流的大小不同。例如，该设定比例为3:7或者2:3等等。当设定比例为3:7时，一个驱动单元向目标发光器件输出的第一驱动电流为该目标发光器件所需电流的30％，另一个驱动单元向目标发光器件输出的第一驱动电流为该目标发光器件所需电流的70％。
这里，目标发光器件为灯板上的任一发光器件。
第二驱动单元被配置为在第一驱动单元的工作状态为异常状态时，向目标发光器件输出第二驱动电流，以驱动灯板显示该目标画面。其中，对于同一发光器件，第二驱动单元输出的第二驱动电流等于两个驱动单元输出的第一驱动电流之和。
需要说明的是，当驱动显示系统包括超过2个驱动单元时，第二驱动单元可以是一个或者多个，第二驱动单元可以包括正在驱动灯板发光的驱动单元和未驱动灯板发光的驱动单元中的至少一种。
在显示驱动系统正常工作时，通过两个驱动单元共同驱动灯板发光。这样，当其中一个驱动单元的工作状态异常时，只需要将该异常的驱动单元停止工作，并将工作状态正常的另一个驱动单元输出的驱动电流增大，这样，灯板仍然可以按照两个驱动单元工作状态均正常时的状态发光。由于在将第一驱动单元切换到第二驱动单元的过程中，第二驱动单元始终驱动灯板发光，因此灯板的显示画面不会出现中断，有利于实现显示效果的无缝切换，进一步保证显示效果。
在一些示例中，两个驱动单元201中的至少一个还被配置为对输出至目标 发光器件的驱动电流进行调节，以对灯板的显示效果进行微调。例如，在保持一个驱动单元向目标发光器件输出的驱动电流大小不变的情况下，将一个驱动单元向目标发光器件输出的驱动电流增大或减小设定值。在每个驱动IC对应的电流调节粒度(即每次调节所能采用的最小调节量，例如，每个驱动IC对应的最大驱动电流的5％等)一定以及目标发光器件所需的电流最大值一定的情况下，两个驱动单元分别向目标发光器件输出驱动电流，可以增加目标发光器件的亮度的可调节等级，从而更加精细地调节灯板的显示效果。
在另一种可能的实施方式中，正在驱动灯板发光的驱动单元仅包括一个驱动单元310。也即是，在同一时刻，只有一个驱动单元310驱动灯板发光。此时，该驱动单元310被配置为向目标画面对应的各个发光单元中的发光器件输出第一驱动电流，以驱动灯板显示目标画面。第二驱动单元被配置为在第一驱动单元(即该正在工作的驱动单元)的工作状态为异常状态时，向目标画面对应的各个发光单元中的发光器件输出第二驱动电流，向同一发光器件输出的第二驱动电流等于第一驱动电流。
在该实施方式中，在第一驱动单元存在异常时，通过第二驱动单元驱动灯板发光，这样，能够使得灯板快速恢复显示，无需等到对第一驱动单元进行维修之后才能正常发光。
下面结合图4对本公开实施例提供的显示驱动系统的结构进行说明。每个驱动单元310包括多个驱动IC311，每个驱动IC311用于驱动一个发光单元子阵列中的发光单元111发光。对于任一发光单元子阵列，每个驱动单元310中均存在一个对应的驱动IC311，也即是每个发光单元阵列与分别属于不同的驱动单元310的两个驱动IC311连接。
在本公开实施例中，每个驱动单元310均包括多个驱动IC组，每个驱动IC组包括沿第一方向x排列的多个驱动IC311，两个驱动单元的驱动IC组在第二方向y上交替布置。这样，可以将驱动同一个发光单元子阵列的两个驱动IC311布置在对应的发光单元子阵列附近，方便布线。
例如，如图4所示，一个驱动单元包括驱动IC1～驱动IC30；另一个驱动单元包括驱动IC1’～驱动IC30’。其中，驱动IC1～驱动IC5、驱动IC6～驱动IC10、驱动IC11～驱动IC15、驱动IC16～驱动IC20、驱动IC21～驱动IC25以及驱动IC26～驱动IC30分别为一个驱动IC组；同样的，驱动IC1’～驱动IC5’、驱动IC6’～驱 动IC10’、驱动IC11’～驱动IC15’、驱动IC16’～驱动IC20’、驱动IC21’～驱动IC25’以及驱动IC26’～驱动IC30’分别为一个驱动IC组。同一个驱动IC组中的5个驱动IC沿左右方向排列，两个驱动单元的所有驱动IC组在上下方向上交替布置。
驱动单元还包括多根信号线，每个驱动IC与至少一根信号线连接。这多根信号线包括控制线、数据线和电源线中的至少一种。其中，控制线包括但不限于时钟(DCLK)信号线、时钟数据锁存(LE)信号线和换行(ROW)信号线等。每种信号线的数量根据实际需要布置，本公开对此不做限制，可以设置为一根或者多根。
在一些示例中，可以将基板的第二表面划分为沿第二方向排列的至少两个区域，每个区域内设置有两组信号线和多个驱动IC，每组信号线与属于一个驱动单元的多个驱动IC连接。例如，如图4所示，将基板的第二表面划分为沿第二方向划分排列的两个区域，驱动单元A的驱动IC1～驱动IC15以及驱动单元B的驱动IC1’～驱动IC15’位于一个区域；驱动单元A的驱动IC16～驱动IC30以及驱动单元B的驱动IC16’～驱动IC30’位于另一个区域。其中，驱动IC1～驱动IC15、驱动IC1’～驱动IC15’、驱动IC16～驱动IC30以及驱动IC16’～驱动IC30’分别与一组信号线连接。
随着显示装置的显示面积的增大，每个驱动单元所包含的驱动IC的数量也会随之增大，如果通过一组信号线与一个驱动单元中的所有驱动IC连接，受到传输距离的限制，信号在对应的信号线中的传输将无法满足性能需求，进而影响显示效果。因此，在本公开实施例中，通过将每个区域中属于同一个驱动单元的的多个驱动IC与一组信号线连接，可以缩短信号线的长度，使得信号在对应的信号线中能够正常传输。
再次参考图4，由于每组信号线连接多个驱动IC组中的驱动IC，且每组信号线连接多个驱动IC组沿第二方向间隔布置，为了方便信号线的布线，信号线呈Z字形走线。例如，如图4中箭头所示方向，驱动IC1～驱动IC15对应的信号线先从左向右延伸，然后向下延伸一段后再从右向左延伸，然后向下延伸一段后再从左向延伸。
如前所述，每个驱动IC与对应的发光单元子阵列中的各个发光单元连接。下面对每个驱动IC与对应的发光单元的连接方式进行介绍。
图5是本公开实施例提供的驱动IC与信号线以及发光单元的连接关系示意 图。图5中以发光单元为LED灯珠为例进行了说明。一个发光单元包括3个发光器件，每行发光单元的发光器件的第一极(例如阳极)均灯板上的开关电路连接。该开关电路用于控制发光单元阵列的按照行扫描的方式工作。该开关电路包括多个开关器件，每个开关器件与一行发光单元的各个发光器件的第一极连接。当开关器件导通时，该行发光器件可以被点亮。示例性地，该开关器件为晶体管。晶体管的控制极与扫描信号线连接，晶体管的第一极与电源信号线连接，晶体管的第二极与一行发光单元中的发光器件连接。
如图5所示，每个驱动IC311具有多个输入引脚和多个输出引脚。其中，每个输入引脚对应连接一根信号线。每个驱动IC311分别与多根控制线连接，并且，多个驱动IC通过一根数据线串接。数据线用于传输串行数据，驱动IC根据配置信息获取串行数据中对应位置的数据，从而得到该驱动IC对应的图像数据。
由于一个发光单元包括3个发光器件，因此，图5中，驱动IC的3个输出引脚与一个发光单元连接。每个输出引脚用于与一个发光器件的第一极(例如阴极)连接。驱动IC311用于根据信号线输入的信号，从目标输出引脚输出驱动电流，以驱动该目标输出引脚所连接的发光器件发光。
示例性地，假设一个发光单元包括三个不同颜色的发光器件，每个驱动IC包括16个输出引脚，则每个发光单元可以与同一行发光单元中的相邻的5个发光单元中的发光器件(即15个发光器件)连接，剩下1个输出引脚可以空置。当显示驱动系统通过分区扫描的方式驱动灯板发光时，假设每个驱动IC对应8次扫描，则每个驱动IC可以同时与8行发光单元中对应的5个发光单元中的发光器件连接，这样，每个驱动IC可以用于驱动一个8行5列的发光单元子阵列发光。
在本公开实施例中，控制单元320与至少一根信号线连接，例如与所有信号线连接，用于根据每根信号线上的信号的状态信息确定正在工作的驱动单元的工作状态。示例性地，信号的状态信息用于指示该信号线上的信号是否存在异常。如果信号线上的信号存在异常，则表示对应的驱动单元的工作状态为异常状态。如果信号线上的信号不存在异常，则表示对应的驱动单元的工作状态为正常状态。
示例性地，控制单元320可以采用以下方式中的至少一种确定信号线上的 信号是否存在异常：
方式一、信号的电平状态无变化的时长是否超过第一设定时长；如果信号的电平状态无变化的时长超过第一设定时长，则表示信号存在异常；如果信号的电平状态无变化的时长未超过第一设定时长，则表示信号不存在异常。
方式二、信号线上未传输电平信号的时长超过第二设定时长；如果未传输电平信号的时长超过第一设定时长，则表示信号存在异常；如果未传输电平信号的时长未超过第一设定时长，则表示信号不存在异常。
方式三、信号线传输的信号的跳变幅值超过跳变幅值阈值；如果信号的跳变幅值超过跳变幅值阈值，则表示信号存在异常；如果信号的跳变幅值未超过跳变幅值阈值，则表示信号不存在异常。
方式四、信号线传输的信号幅值超过幅值阈值；如果信号的幅值超过幅值阈值，则表示信号存在异常；如果信号的幅值未超过幅值阈值，则表示信号不存在异常
其中，第一设定时长和第二设定时长可以根据实际需要设置，本公开对此不做限制。
在本公开实施例中，驱动单元310、控制单元320、信号线330均位于同一基板上。示例性地，控制单元320可以采用单片机、MCU(Microcontroller Unit，微控制器)、CPLD(Complex Programmable Logic Device，复杂可编程逻辑器件)或者FPGA(Field Programmable Gate Array，现场可编程门阵列)等实现，本公开对此不做限制。
图6为本公开实施例提供的另一种驱动显示系统的结构示意图。如图6所示，该显示驱动系统还包括两个直流-直流(DC-DC)转换模块340，分别用于为对应的一个驱动单元310供电。DC-DC转换模块340的控制端(又称使能端)与控制单元320连接。在显示阶段，控制单元320控制两个DC-DC转换模块工作，使得两个驱动单元310均驱动灯板发光。当控制单元320检测到第一驱动单元的工作状态为异常状态时，控制第一驱动单元对应的DC-DC转换模块340停止工作，从而使得第一驱动单元停止工作。同时保持另一个DC-DC转换模块340为第二驱动单元供电。并且，控制单元320将故障信息反馈给系统控制器件(例如系统控制板卡)，使得系统控制器件调整发送给第二驱动单元的数据信号，使得第二驱动单元中的驱动IC能够向目标发光器件增大驱动电流。这样， 完成从两个驱动单元共同驱动灯板发光到由第二驱动单元驱动灯板发光的切换。
其中，故障信息包括但不限于故障时间、故障内容和故障位置。其中故障时间用于指示检测到故障的时间，故障内容可以用于指示信号线上信号的异常类型(例如信号电平无变化的时长超过第一设定时长、无信号时长超过第二设定时长等)，故障位置用于指示故障的驱动单元。
在一些示例中，显示驱动系统还包括缓冲逻辑单元350，该缓冲逻辑单元350、驱动单元310和控制单元320也位于同一基板上。该缓冲逻辑单元310一方面与系统控制器件连接，另一方面通过信号线330与控制单元320和驱动单元310连接，从而能够在系统控制器件与控制单元310和驱动单元320之间起到信号电平转换和/或数据缓冲等作用。
在本公开实施例中，该显示驱动系统还可以用于在故障检测阶段驱动灯板进行显示，以便在显示驱动系统存在故障时对故障进行定位。
在一种可能的实现方式中，两个驱动单元中的一个驱动单元被配置为在故障检测阶段，驱动多个发光单元中第一颜色对应的发光器件发光；两个驱动单元中的另一个驱动单元被配置为在该故障检测阶段，驱动所述多个发光单元中第二颜色对应的发光器件发光。其中，第一颜色和第二颜色不同。
这里，每个发光单元中，第一颜色对应的发光器件可以为一个；每个发光单元中第二颜色对应的发光器件也为一个。例如，第一颜色为红色，第二颜色为蓝色；又例如，第一颜色为蓝色，第二颜色为绿色。
在故障检测阶段，两个驱动单元分别驱动灯板的每个发光单元中不同颜色对应的发光器件发光，这样，每个发光单元均发出由第一颜色和第二颜色的光混合而成的光。根据灯板上各个发光单元发出的颜色，可以确定出显示驱动系统是否故障，以及在故障时的故障信息。该故障信息用于指示故障位置，故障位置包括但不限于故障的驱动单元和故障的驱动IC。
例如，如果每个发光单元均发出第一颜色和第二颜色的光混合而成的光，则表示显示驱动系统无故障。又例如，如果部分发光单元仅发出第一颜色的光，则表示这部分发光单元对应的用于驱动发光单元发出第二颜色的光的驱动IC故障。再例如，如果部分发光单元仅发出第二颜色的光，则表示这部分发光单元 对应的用于驱动发光单元发出第一颜色的光的驱动IC故障。
通过两个驱动单元在故障检测阶段同时驱动灯板发光，故障检测的效率较高。
在另一种可能的实施方式中，所述多个驱动单元中的一个驱动单元被配置为在故障检测阶段的第一时间段，驱动所述多个发光单元中第三颜色对应的发光器件发光，以及所述故障检测阶段的第二时间段，停止驱动所述多个发光单元中第三颜色对应的发光器件发光；所述多个驱动单元中的另一个驱动单元被配置为在所述第二时间段，驱动所述多个发光单元中第四颜色对应的发光器件发光。其中，第二时间段为第一时间段之后的一个时间段。
可选地，第三颜色和第四颜色可以相同或者不同。在一些示例中，第三颜色可以与单个发光器件发出的光的颜色相同，例如，红色、蓝色或者绿色；在另一些示例中，第三颜色可以与同一发光单元中的多个发光器件混合发出的光的颜色相同；例如第三颜色可以为紫色，可以由发红光的发光器件和发蓝光的发光器件发光混合得到。
实现时，系统控制板卡可以通过I2C总线(例如图5中的SCL线和SDA线)与控制单元320连接，通过I2C总线向控制单元320发送故障检测指令，该故障检测指令用于指示控制单元320进入故障检测阶段。当控制单元320接收到故障检测指令后，进入故障检测阶段。在故障检测阶段中，系统控制板卡通过发送卡和接收卡将需要显示的颜色对应的电压数据发送给驱动单元中的各个驱动IC，驱动IC根据该电压数据控制对应的发光器件发光。
需要说明的是，系统控制板卡也可以通过其他方式与控制单元连接，例如通过SPI(serial peripheral interface，同步串行接口)或者RS232与控制单元连接。
需要说民的是，对于显示驱动系统包括超过两个的驱动单元的情况，可以参照包括两个驱动单元的情况，本公开对此将不再详细描述。
本公开实施例还提供了一种显示装置，该显示装置包括灯板和驱动显示系统。驱动显示系统用于驱动灯板发光。驱动显示系统的相关内容参见前述实施例，在此省略详细描述。
示例性地，显示装置包括但不限于显示器以及手机、平板电脑、笔记本电 脑等具有显示功能的终端设备。
其中，显示器可以为户外大型显示器，例如地屏、立面显示屏幕或者各类异形创意屏幕等。尤其适用于显示不能中断的场景，例如大型演出活动现场等。
本公开实施例还提供了一种驱动显示方法。该显示驱动方法可以由前述控制单元执行。如图7所示，该驱动显示方法包括：
在S1中，在显示阶段，通过多个驱动单元中的至少一个驱动单元驱动灯板发光，所述多个驱动单元均与所述灯板连接；
在S2中，检测正在驱动所述灯板发光的驱动单元的工作状态；
在公开实施例中，工作状态包括正常状态和异常状态。正常状态表示驱动单元能够正常驱动灯板发光。异常状态表示驱动单元不能正常驱动灯板发光，导致灯板出现显示异常。
在S3中，当第一驱动单元的工作状态为异常状态时，通过第二驱动单元驱动所述灯板发光。
其中，所述第一驱动单元为所述正在驱动所述灯板发光的驱动单元中的至少一个驱动单元，所述第二驱动单元为驱动显示系统所包含的所有驱动单元中除了所述第一驱动单元之外的至少一个驱动单元。
在一种可能的实施方式中，S1包括：在显示阶段，通过至少两个驱动单元向目标发光器件输出第一驱动电流，以驱动所述灯板显示目标画面；相应的，S3包括：当所述第一驱动单元的工作状态为异常状态时，通过所述第二驱动单元向所述目标发光器件输出第二驱动电流，以驱动所述灯板显示所述目标画面；其中，所述目标发光器件为所述灯板上的任一发光器件，所述第二驱动电流输出的第二驱动电流之和等于所述至少两个驱动单元输出的第一驱动电流之和。
可选地，所述至少两个驱动单元向所述目标发光器件输出的第一驱动电流的大小相同或者不同。
在另一种可能的实施方式中，S1包括：在显示阶段，通过一个驱动单元向目标发光器件输出第一驱动电流，以驱动所述灯板显示目标画面；S3包括：当第一驱动单元的工作状态为异常状态时，通过第二驱动单元向目标发光器件输出第二驱动电流，以驱动所述灯板显示所述目标画面；其中，所述目标发光器件为所述灯板上的任一发光器件，所述第二驱动电流等于所述第一驱动电流之和。
示例性地，每个所述驱动单元包括多个驱动IC和多根信号线，每根所述信号线与多个所述驱动IC连接；所述检测正在驱动所述灯板发光的驱动单元的工作状态，包括：检测所述多根信号线上的信号的状态信息；根据所述信号的状态信息确定所述正在驱动所述灯板发光的驱动单元的工作状态。
在一种可能的实施方式中，所述显示驱动方法还包括：在故障检测阶段，通过所述多个驱动单元中的一个驱动单元驱动所述多个发光单元中第一颜色对应的发光器件发光；在所述故障检测阶段，通过所述多个驱动单元中的另一个驱动单元驱动所述多个发光单元中第二颜色对应的发光器件发光；其中，所述第一颜色和所述第二颜色不同。
在另一种可能的实施方式中，所述显示驱动方法还包括：在故障检测阶段的第一时间段，通过所述多个驱动单元中的一个驱动单元驱动所述多个发光单元中第三颜色对应的发光器件发光；在所述故障检测阶段的第二时间段，停止驱动所述多个发光单元中第三颜色对应的发光器件发光，且通过所述多个驱动单元中的另一个驱动单元驱动所述多个发光单元中第四颜色对应的发光器件发光。
图8显示了一种故障检测流程。如图8所示，该故障检测流程包括：在S81中，发送卡发出故障检测指令；在S82中，接收卡接收到该故障检测指令，进入故障检测模式，向检测单元发送故障检测指令以及向驱动单元发送检测数据，该检测数据与待显示颜色对应；在S83中，控制单元打开第一DC-DC转换模块，并关闭第二DC-DC转换模块，第一DC-DC转换模块和第二DC-DC转换模块分别为前述两个DC-DC转换模块；在S84中，第一DC-DC转换模块所连接的驱动单元驱动灯板显示第三颜色，如果颜色显示异常，则上报故障信息并将该显示装置送去维修。如果颜色显示正常，则执行S85。在S85中，控制单元打开第二DC-DC转换模块，并关闭第一DC-DC转换模块。在S86中，第二DC-DC转换模块所连接的驱动单元驱动灯板显示第三颜色，如果颜色显示异常，则上报故障信息并将该显示装置送去维修；如果颜色显示正常，表示无故障，退出故障检测流程。
需要说明的是，显示驱动方法与前述显示驱动系统属于同一构思，相关内容可以参见前述显示驱动系统，在此省略详细描述。
本公开实施例还提供了一种显示驱动装置。如图9所示，该显示驱动装置 包括检测模块910和控制模块920。其中，控制模块920用于在显示阶段，通过多个驱动单元中的至少一个驱动单元驱动灯板发光，所述多个驱动单元均与所述灯板连接；检测模块910用于检测正在驱动所述灯板发光的驱动单元的工作状态；控制模块920还用于当检测模块910检测到第一驱动单元的工作状态为异常状态时，通过第二驱动单元驱动所述灯板发光，其中，所述第一驱动单元为所述正在驱动所述灯板发光的驱动单元中的至少一个驱动单元，所述第二驱动单元为所述多个驱动单元中除了所述第一驱动单元之外的至少一个驱动单元。
在一种可能的实施方式中，控制模块920用于在显示阶段，通过所述多个驱动单元中的至少两个驱动单元向目标发光器件输出第一驱动电流，以驱动所述灯板显示目标画面；以及当所述第一驱动单元的工作状态为异常状态时，通过所述第二驱动单元向所述目标发光器件输出第二驱动电流，以驱动所述灯板显示所述目标画面；其中，所述目标发光器件为所述灯板上的任一发光器件，所述第二驱动单元输出的第二驱动电流之和等于所述至少两个驱动单元输出的第一驱动电流之和。
可选地，检测模块910用于检测所述多根信号线上的信号的状态信息；根据所述状态信息确定所述正在驱动所述灯板发光的驱动单元的工作状态。
可选地，该控制模块920还用于在故障检测阶段，通过所述多个驱动单元中的一个驱动单元驱动所述多个发光单元中第一颜色对应的发光器件发光；在所述故障检测阶段，通过所述多个驱动单元中的另一个驱动单元驱动所述多个发光单元中第二颜色对应的发光器件发光；其中，所述第一颜色和所述第二颜色不同。
可选地，该控制模块920还用于在故障检测阶段的第一时间段，通过所述多个驱动单元中的一个驱动单元驱动所述多个发光单元中第三颜色对应的发光器件发光；在所述故障检测阶段的第二时间段，停止驱动所述多个发光单元中第三颜色对应的发光器件发光，且通过所述多个驱动单元中的另一个驱动单元驱动所述多个发光单元中第四颜色对应的发光器件发光。
需要说明的是：上述实施例提供的显示驱动装置在进行显示驱动时，仅以上述各功能模块的划分进行举例说明，实际应用中，可以根据需要而将上述功 能分配由不同的功能模块完成，即将设备的内部结构划分成不同的功能模块，以完成以上描述的全部或者部分功能。另外，上述实施例提供的显示驱动装置与显示驱动方法实施例属于同一构思，其具体实现过程详见方法实施例，这里不再赘述。
图10是本公开实施例提供的一种显示驱动装置的结构框图。该显示驱动装置可以为计算机设备，该显示驱动装置1000包括：处理器1001和存储器1002。
处理器1001可以包括一个或多个处理核心，比如5核心处理器、8核心处理器等。处理器1001可以采用DSP(Digital Signal Processing，数字信号处理)、FPGA(Field－Programmable Gate Array，现场可编程门阵列)、PLA(Programmable Logic Array，可编程逻辑阵列)中的至少一种硬件形式来实现。处理器1001也可以包括主处理器和协处理器，主处理器是用于对在唤醒状态下的数据进行处理的处理器，也称CPU(Central Processing Unit，中央处理器)；协处理器是用于对在待机状态下的数据进行处理的低功耗处理器。
存储器1002可以包括一个或多个计算机可读存储介质，该计算机可读存储介质可以是非暂态的。存储器1002还可包括高速随机存取存储器，以及非易失性存储器，比如一个或多个磁盘存储设备、闪存存储设备。在一些实施例中，存储器1002中的非暂态的计算机可读存储介质用于存储至少一个指令，该至少一个指令用于被处理器1001所执行以实现本公开实施例中提供的显示驱动方法。
本领域技术人员可以理解，图10中示出的结构并不构成对计算机设备1000的限定，可以包括比图示更多或更少的组件，或者组合某些组件，或者采用不同的组件布置。
本公开实施例还提供了一种非临时性计算机可读存储介质，当所述存储介质中的指令由计算机设备的处理器执行时，使得计算机设备能够执行本公开实施例中提供的显示驱动方法。
本公开实施例还提供了一种计算机程序产品，包括计算机程序/指令，所述计算机程序/指令被处理器执行时实现本公开实施例中提供的显示驱动方法。
除非另作定义，此处使用的技术术语或者科学术语应当为本公开所属领域内具有一般技能的人士所理解的通常意义。本公开专利申请说明书以及权利要求书中使用的“第一”、“第二”、“第三”以及类似的词语并不表示任何顺 序、数量或者重要性，而只是用来区分不同的组成部分。同样，“一个”或者“一”等类似词语也不表示数量限制，而是表示存在至少一个。“包括”或者“包含”等类似的词语意指出现在“包括”或者“包含”前面的元件或者物件涵盖出现在“包括”或者“包含”后面列举的元件或者物件及其等同，并不排除其他元件或者物件。“连接”或者“相连”等类似的词语并非限定于物理的或者机械的连接，而是可以包括电性的连接，不管是直接的还是间接的。“上”、“下”、“左”、“右”、“顶”、“底”等仅用于表示相对位置关系，当被描述对象的绝对位置改变后，则所述相对位置关系也可能相应地改变。
以上，并非对本公开作任何形式上的限制，虽然本公开已通过实施例揭露如上，然而并非用以限定本公开，任何熟悉本专业的技术人员，在不脱离本公开技术方案范围内，当可利用上述揭示的技术内容作出些许更动或修饰为等同变化的等效实施例，但凡是未脱离本公开技术方案的内容，依据本公开的技术实质对以上实施例所作的任何简单修改、等同变化与修饰，均仍属于本公开技术方案的范围内。

Claims (16)

  1. 一种显示驱动系统，其特征在于，所述显示驱动系统包括：多个驱动单元和控制单元；
    所述多个驱动单元均与灯板连接，所述多个驱动单元中的至少一个驱动单元用于在显示阶段驱动所述灯板发光；所述控制单元分别与所述多个驱动单元连接，用于检测正在驱动所述灯板发光的驱动单元的工作状态；
    在检测到第一驱动单元存在异常时，通过第二驱动单元驱动所述灯板发光，其中，所述第一驱动单元为所述正在驱动所述灯板发光的驱动单元中的至少一个驱动单元，所述第二驱动单元为所述多个驱动单元中除了所述第一驱动单元之外的至少一个驱动单元。
  2. 根据权利要求1所述的显示驱动系统，其特征在于，所述正在驱动所述灯板发光的驱动单元包括所述多个驱动单元中的至少两个驱动单元，所述灯板包括阵列布置的多个发光单元，每个所述发光单元包括用于发出不同颜色的光的多个发光器件；
    所述至少两个驱动单元被配置为在所述显示阶段向目标发光器件输出第一驱动电流，以驱动所述灯板显示目标画面；
    所述第二驱动单元被配置为在所述第一驱动单元存在异常时，在所述显示阶段向所述目标发光器件输出第二驱动电流，以驱动所述灯板显示所述目标画面；
    其中，所述目标发光器件为所述灯板上的任一发光器件，所述第二驱动单元输出的第二驱动电流之和等于所述至少两个驱动单元输出的第一驱动电流之和。
  3. 根据权利要求2所述的显示驱动系统，其特征在于，所述至少两个驱动单元向所述目标发光器件输出的第一驱动电流的大小相同或者不同。
  4. 根据权利要求1所述的显示驱动系统，其特征在于，每个所述驱动单元包括多个驱动IC和多根信号线，每根所述信号线与多个所述驱动IC连接，所 述控制单元分别与所述多根信号线连接；
    所述控制单元被配置为检测所连接的所述信号线上的信号的状态信息，以及根据所述状态信息确定正在驱动所述灯板发光的驱动单元是否存在异常。
  5. 根据权利要求1至4任一项所述的显示驱动系统，其特征在于，每个所述驱动单元所包含的多个驱动IC被分为多个驱动IC组，每个所述驱动IC组包括沿第一方向排列的多个驱动IC，且所述多个驱动单元的所述驱动IC组在第二方向上交替布置。
  6. 根据权利要求1至4任一项所述的显示驱动系统，其特征在于，所述灯板包括阵列布置的多个发光单元，每个发光单元包括用于发出不同颜色的光的多个发光器件；
    所述多个驱动单元中的一个驱动单元被配置为在故障检测阶段，驱动所述多个发光单元中第一颜色对应的发光器件发光；
    所述多个驱动单元中的另一个所述驱动单元被配置为在所述故障检测阶段，驱动所述多个发光单元中第二颜色对应的发光器件发光；
    其中，所述第一颜色和所述第二颜色不同。
  7. 根据权利要求1至4任一项所述的显示驱动系统，其特征在于，所述灯板包括阵列布置的多个发光单元，每个发光单元包括用于发出不同颜色的光的多个发光器件；
    所述多个驱动单元中的一个驱动单元被配置为在故障检测阶段的第一时间段，驱动所述多个发光单元中第三颜色对应的发光器件发光，以及所述故障检测阶段的第二时间段，停止驱动所述多个发光单元中第三颜色对应的发光器件发光；
    所述多个驱动单元中的另一个驱动单元被配置为在所述第二时间段，驱动所述多个发光单元中第四颜色对应的发光器件发光。
  8. 一种显示驱动方法，其特征在于，所述显示驱动方法包括：
    在显示阶段，通过多个驱动单元中的至少一个驱动单元驱动灯板发光，所 述多个驱动单元均与所述灯板连接；
    检测正在驱动所述灯板发光的驱动单元的工作状态；
    当第一驱动单元的工作状态为异常状态时，通过第二驱动单元驱动所述灯板发光，其中，所述第一驱动单元为所述正在驱动所述灯板发光的驱动单元中的至少一个驱动单元，所述第二驱动单元为所述多个驱动单元中除了所述第一驱动单元之外的至少一个驱动单元。
  9. 根据权利要求8所述的方法，其特征在于，所述在显示阶段，通过多个驱动单元中的至少一个驱动单元驱动灯板发光，包括：
    在显示阶段，通过所述多个驱动单元中的至少两个驱动单元向目标发光器件输出第一驱动电流，以驱动所述灯板显示目标画面；
    所述当第一驱动单元的工作状态为异常状态时，通过第二驱动单元驱动所述灯板发光，包括：
    当所述第一驱动单元的工作状态为异常状态时，通过所述第二驱动单元向所述目标发光器件输出第二驱动电流，以驱动所述灯板显示所述目标画面；
    其中，所述目标发光器件为所述灯板上的任一发光器件，所述第二驱动单元输出的第二驱动电流之和等于所述至少两个驱动单元输出的第一驱动电流之和。
  10. 根据权利要求9所述的显示驱动方法，其特征在于，所述至少两个驱动单元向所述目标发光器件输出的第一驱动电流的大小相同或者不同。
  11. 根据权利要求8所述的显示驱动方法，其特征在于，每个所述驱动单元包括多个驱动IC和多根信号线，每根所述信号线与多个所述驱动IC连接；
    所述检测正在驱动所述灯板发光的驱动单元的工作状态，包括：
    检测所述多根信号线上的信号的状态信息；
    根据所述状态信息确定所述正在驱动所述灯板发光的驱动单元的工作状态。
  12. 根据权利要求8至11任一项所述的显示驱动方法，其特征在于，所述 灯板包括阵列布置的多个发光单元，每个发光单元包括用于发出不同颜色的光的多个发光器件；
    所述显示驱动方法还包括：
    在故障检测阶段，通过所述多个驱动单元中的一个驱动单元驱动所述多个发光单元中第一颜色对应的发光器件发光；
    在所述故障检测阶段，通过所述多个驱动单元中的另一个驱动单元驱动所述多个发光单元中第二颜色对应的发光器件发光；
    其中，所述第一颜色和所述第二颜色不同。
  13. 根据权利要求8至11任一项所述的显示驱动方法，其特征在于，所述灯板包括阵列布置的多个发光单元，每个发光单元包括用于发出不同颜色的光的多个发光器件；
    所述显示驱动方法还包括：
    在故障检测阶段的第一时间段，通过所述多个驱动单元中的一个驱动单元驱动所述多个发光单元中第三颜色对应的发光器件发光；
    在所述故障检测阶段的第二时间段，停止驱动所述多个发光单元中第三颜色对应的发光器件发光，且通过所述多个驱动单元中的另一个驱动单元驱动所述多个发光单元中第四颜色对应的发光器件发光。
  14. 一种显示装置，其特征在于，包括灯板和如权利要求1至7任一项所述的显示驱动系统，所述显示驱动系统与所述灯板连接。
  15. 一种显示驱动装置，其特征在于，包括处理器和存储器；所述存储器用于存储计算机程序，所述处理器用于执行所述存储器中的计算机程序，以实现如权利要求8至13任一项所述的显示驱动方法。
  16. 一种计算机可读存储介质，其特征在于，所述存储介质包括至少一条指令，所述至少一条指令被处理器执行时，执行如权利要求8至13任一项所述的显示驱动方法。
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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN203325410U (zh) * 2013-05-29 2013-12-04 晶彩（福建）光电有限公司 一种新型led显示屏
CN106157862A (zh) * 2015-04-17 2016-11-23 矽创电子股份有限公司 显示设备与计算器系统
CN108010490A (zh) * 2017-11-29 2018-05-08 武汉华星光电半导体显示技术有限公司 一种驱动电路
CN110349546A (zh) * 2018-04-04 2019-10-18 中华映管股份有限公司 显示装置
CN113474833A (zh) * 2019-03-19 2021-10-01 三星电子株式会社 Led显示面板和修复方法
CN113948036A (zh) * 2020-07-16 2022-01-18 华源智信半导体(深圳)有限公司 用于显示装置中的分布式驱动电路的寻址和冗余方案

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN203325410U (zh) * 2013-05-29 2013-12-04 晶彩（福建）光电有限公司 一种新型led显示屏
CN106157862A (zh) * 2015-04-17 2016-11-23 矽创电子股份有限公司 显示设备与计算器系统
CN108010490A (zh) * 2017-11-29 2018-05-08 武汉华星光电半导体显示技术有限公司 一种驱动电路
CN110349546A (zh) * 2018-04-04 2019-10-18 中华映管股份有限公司 显示装置
CN113474833A (zh) * 2019-03-19 2021-10-01 三星电子株式会社 Led显示面板和修复方法
CN113948036A (zh) * 2020-07-16 2022-01-18 华源智信半导体(深圳)有限公司 用于显示装置中的分布式驱动电路的寻址和冗余方案

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