US-12620329-B2 - Display drive system and method, and display device

US12620329B2US 12620329 B2US12620329 B2US 12620329B2US-12620329-B2

Abstract

Provided is a display drive system, including: a plurality of drive units and a control unit. The plurality of drive units are connected to a lamp panel, and at least one of the plurality of drive units is configured to drive, during a display stage, the lamp panel to emit light. The control unit is connected to the plurality of drive units, and is configured to detect an operating state of the drive units driving the lamp panel to emit light. In response to detecting that a first drive unit is abnormal, the lamp panel is driven, by a second drive unit, to emit light, wherein the first drive unit is at least one of the drive units driving the lamp panel to emit light, and the second drive unit is at least one of the plurality of drive units other than the first drive unit.

Inventors

Chao Yu
Enhui Guan
Zhongkui WAN
Xinyi CHENG
Changlin Leng
Xingqun JIANG
Youxiang Xia

Assignees

BOE INTELLIGENT IOT TECHNOLOGY CO., LTD.
BOE TECHNOLOGY GROUP CO., LTD.

Dates

Publication Date: 20260505
Application Date: 20250109

Claims (19)

1 . A display drive system, comprising: a plurality of drive units, a control unit, and a power supply unit; wherein the plurality of drive units are connected to a lamp panel, and at least one of the plurality of drive units is configured to drive, during a display stage, the lamp panel to emit light; and the control unit is connected to the plurality of drive units, and is configured to detect an operating state of the drive units driving the lamp panel to emit light; wherein in response to detecting that a first drive unit is abnormal, the lamp panel is driven, by a second drive unit, to emit light, wherein the first drive unit is at least one of the drive units driving the lamp panel to emit light, and the second drive unit is at least one of the plurality of drive units other than the first drive unit; and the power supply unit is connected to the plurality of drive units; wherein a plurality of drive integrated circuits (ICs) in each of the drive units are organized into a plurality of drive IC groups, each of the drive IC groups comprising a plurality of drive ICs arranged along a first direction, and the drive IC groups of the plurality of drive units being alternatively arranged in a second direction.
2 . The display drive system according to claim 1 , wherein the power supply unit comprises a power supply selector and a plurality of power supply sub-units, wherein the power supply selector is connected to the plurality of power supply sub-units and the plurality of drive units; and the power supply selector is configured to receive voltages provided by the plurality of power supply sub-units, and to output a higher voltage among the voltages provided by the plurality of power supply sub-units to the plurality of drive units.
3 . The display drive system according to claim 2 , wherein the power supply selector comprises a plurality of diodes; wherein an anode of each of the diodes is connected to an output terminal of one of the plurality of power supply sub-units, the power supply sub-units connected to different diodes are different, cathodes of the plurality of diodes are connected and respectively connected to the plurality of drive units.
4 . The display drive system according to claim 1 , wherein the drive units driving the lamp panel to emit light comprise at least two of the plurality of drive units; and the lamp panel comprises a plurality of light-emitting units arranged in arrays, each of the light-emitting units comprising a plurality of light-emitting devices for emitting light of different colors, and the plurality of light-emitting units comprise a plurality of light-emitting unit sets arranged in an array, wherein each of the light-emitting unit sets comprises at least two subsets, each of the subsets comprising at least one light-emitting unit, and light-emitting units in different subsets being connected to different drive units in the at least two drive units.
5 . The display drive system according to claim 4 , wherein the light-emitting units in the at least two subsets are alternately arranged in the first direction and/or the second direction.
6 . The display drive system according to claim 5 , wherein each of the light-emitting unit sets comprises two of the subsets, each of the subsets comprising two light-emitting units.
7 . The display drive system according to claim 5 , wherein the at least two drive units are configured to output, during the display stage, a first drive current to the light-emitting devices of each of the light-emitting units to drive the lamp panel to display a target screen; and the at least two drive units are further configured to stop, in response to a faulty light-emitting unit existing in a first light-emitting unit set, output a drive current to light-emitting devices of a light-emitting-unit in a first subset in the first light-emitting unit set, and output a second drive current to light-emitting devices of a light-emitting unit in a second subset to drive the lamp panel to display the target screen, the second drive current being greater than the first drive current; wherein the first light-emitting unit set is any one of the plurality of light-emitting unit sets, and each of the light-emitting unit sets corresponds to one pixel in the target screen, the first subset is a subset to which the faulty light-emitting unit belongs, and the second subset is a subset other than the first subset in the first light-emitting unit set.
8 . The display drive system according to claim 7 , wherein the at least two drive units are further configured to output, in response to the faulty light-emitting unit existing in the first light-emitting unit set, a third drive current to light-emitting devices of a light-emitting unit adjacent to the first light-emitting unit set in a second light-emitting unit set, the third drive current being different from the first drive current; wherein the second light-emitting unit set is adjacent to the first light-emitting unit set, and a brightness difference between brightness values of each color corresponding to the first light-emitting unit set and the second light-emitting unit set satisfies a defined condition, the defined condition comprising the brightness difference being less than a difference threshold, or a ratio of the brightness difference to a brightness value of corresponding color in the second light-emitting unit set being less than a ratio threshold.
9 . The display drive system according to claim 8 , wherein the at least two drive units are further configured to output, in response to the faulty light-emitting unit existing in the first light-emitting unit set, a third drive current that is greater than the first drive current to light-emitting devices of a first target light-emitting unit in the second light-emitting unit set, wherein the first target light-emitting unit is adjacent to the light-emitting unit in the first subset; and/or, the at least two drive units are further configured to output, in response to the faulty light-emitting unit existing in the first light-emitting unit set, a third drive current that is less than the first drive current to light-emitting devices of a second target light-emitting unit in the second light-emitting unit set, wherein the second target light-emitting unit is adjacent to the light-emitting unit in the second subset.
10 . The display drive system according to claim 9 , wherein an absolute value of a difference between the third drive current and the first drive current is positively correlated with the first drive current and negatively correlated with the ratio.
11 . The display drive system according to claim 9 , wherein at least two drive units are further configured to output, in response to the faulty light-emitting unit existing in the first light-emitting unit set, a fourth drive current to light-emitting devices of a third target light-emitting unit in the second light-emitting unit set, wherein an absolute value of a difference between the fourth drive current and the first drive current is equal to an absolute value of a difference between the third drive current and the first drive current, and a symbol of the difference between the fourth drive current and the first drive current and a symbol of the difference between the third drive current and the first drive current are opposite; wherein the third target light-emitting unit is not adjacent to the first light-emitting unit set, and the third target light-emitting unit and the light-emitting unit adjacent to the first light-emitting unit set belong to different subsets.
12 . The display drive system according to claim 7 , wherein each of the drive ICs is connected to the plurality of light-emitting units through a plurality of drive lines, and the control unit is connected to the plurality of drive lines; wherein the control unit is configured to detect state information of a signal in each of the drive lines, and determine, based on the state information, whether a fault exists in a light-emitting unit connected to the drive line.
13 . A display drive method, comprising: during a display stage, driving, by at least two of a plurality of drive units, a lamp panel to emit light, wherein the plurality of drive units are connected to the lamp panel; detecting an operating state of the drive units driving the lamp panel to emit light; and in response to the operating state of a first drive unit being abnormal, driving, by a second drive unit, the lamp panel to emit light, wherein the first drive unit is at least one of the drive units driving the lamp panel to emit light, and the second drive unit is at least one of the plurality of drive units other than the first drive unit; wherein a plurality of drive integrated circuits (ICs) in each of the drive units are organized into a plurality of drive IC groups, each of the drive IC groups comprising a plurality of drive ICs arranged along a first direction, and the drive IC groups of the plurality of drive units being alternatively arranged in a second direction.
14 . The display drive method according to claim 13 , wherein the lamp panel comprises a plurality of light-emitting units arranged in arrays, each of the light-emitting units comprising a plurality of light-emitting devices for emitting light of different colors, and the plurality of light-emitting units comprise a plurality of light-emitting unit sets arranged in an array, wherein each of the light-emitting unit sets comprises at least two subsets, each of the subsets comprising at least one light-emitting unit, and light-emitting units in different subsets being connected to different drive units in the at least two drive units; during the display stage, driving, by the at least two of the plurality of drive units, the lamp panel to emit light comprises: outputting, during the display stage, a first drive current to the light-emitting devices of each of the light-emitting units to drive the lamp panel to display a target screen; and stopping, in response to a faulty light-emitting unit existing in a first light-emitting unit set, outputting a drive current to light-emitting devices of a light-emitting-unit in a first subset in the first light-emitting unit set, and outputting a second drive current to light-emitting devices of a light-emitting unit in a second subset to drive the lamp panel to display the target screen, the second drive current being greater than the first drive current; wherein the first light-emitting unit set is any one of the plurality of light-emitting unit sets, and each of the light-emitting unit sets corresponds to one pixel in the target screen, the first subset is a subset to which the faulty light-emitting unit belongs, and the second subset is a subset other than the first subset in the first light-emitting unit set.
15 . The display drive method according to claim 14 , wherein during the display stage, driving, by the at least two of the plurality of drive units, the lamp panel to emit light further comprises: outputting, in response to the faulty light-emitting unit existing in the first light-emitting unit set, a third drive current to light-emitting devices of a light-emitting unit adjacent to the first light-emitting unit set in a second light-emitting unit set, the third drive current being different from the first drive current; wherein the second light-emitting unit set is adjacent to the first light-emitting unit set, and a brightness difference between brightness values of each color corresponding to the first light-emitting unit set and the second light-emitting unit set satisfies a defined condition, the defined condition comprising the brightness difference being less than a difference threshold, or a ratio of the brightness difference to a brightness value of corresponding color in the second light-emitting unit set being less than a ratio threshold.
16 . The display drive method according to claim 15 , wherein outputting the third drive current to the light-emitting devices of the light-emitting unit adjacent to the first light-emitting unit set in the second light-emitting unit set comprises: outputting a third drive current that is greater than the first drive current to light-emitting devices of a first target light-emitting unit in the second light-emitting unit set, wherein the first target light-emitting unit is adjacent to the light-emitting unit in the first subset; and/or, outputting a third drive current that is less than the first drive current to light-emitting devices of a second target light-emitting unit in the second light-emitting unit set, wherein the second target light-emitting unit is adjacent to the light-emitting unit in the second subset.
17 . A display drive device, comprising: a memory and a processor; wherein the memory stores one or more computer programs, wherein the one or more computer programs, when loaded and run by the processor, cause the processor to perform the display drive method as defined in claim 13 .
18 . A non-transitory computer-readable storage medium, storing one or more instructions therein, wherein the one or more instructions, when loaded and executed by a processor, cause the processor to perform the display drive method as defined in claim 13 .
19 . A display device, comprising: a lamp panel and a display drive system; wherein the display drive system is connected to the lamp panel; and the display drive system comprises a plurality of drive units, a control unit, and a power supply unit; wherein the plurality of drive units are connected to a lamp panel, and at least one of the plurality of drive units is configured to drive, during a display stage, the lamp panel to emit light; and the control unit is connected to the plurality of drive units, and is configured to detect an operating state of the drive units driving the lamp panel to emit light; wherein in response to detecting that a first drive unit is abnormal, the lamp panel is driven, by a second drive unit, to emit light, wherein the first drive unit is at least one of the drive units driving the lamp panel to emit light, and the second drive unit is at least one of the plurality of drive units other than the first drive unit; and the power supply unit is connected to the plurality of drive units; wherein a plurality of drive integrated circuits (ICs) in each of the drive units are organized into a plurality of drive IC groups, each of the drive IC groups comprising a plurality of drive ICs arranged along a first direction, and the drive IC groups of the plurality of drive units being alternatively arranged in a second direction.

Description

This present application is a continuation-in-part application of U.S. patent application Ser. No. 18/026,091, filed on Mar. 13, 2023, which is a US national stage of International application No. PCT/CN2022/090189, filed on Apr. 29, 2022, the disclosure of both of which is herein incorporated by reference in its entirety. TECHNICAL FIELD The present disclosure relates to the field of display technologies, and in particular, relates to a display drive system, a display drive method, and a display device. BACKGROUND A display device includes a lamp panel and a display drive system. The lamp panel includes a plurality of light-emitting units arranged in arrays. Each of the light-emitting units includes a plurality of sub-units for emitting light of different colors. The plurality of light-emitting units are organized into a plurality of light-emitting unit groups according to their locations, and each of the light-emitting unit groups includes a plurality of light-emitting units. The display drive system includes a plurality of drive integrated circuits (IC), and each of the drive ICs is connected to all of the light-emitting units in one of the light-emitting unit groups and is configured to drive the connected light-emitting units to emit light. Where the drive IC in the display drive system fails or a signal line connected to the drive IC fails, at least a portion of the light-emitting units of the lamp panel fails to emit light normally, such that a display of the display device is abnormal, and thus reliability of the display drive system is low. SUMMARY Embodiments of the present disclosure provide a display drive system, a display drive method, and a display device, which improve the reliability of the display drive system. The technical solutions are as follows. Some embodiments of the present disclosure provide a display drive system. The display drive system includes a plurality of drive units, a control unit, and a power supply unit; wherein the plurality of drive units are connected to a lamp panel, and at least one of the plurality of drive units is configured to drive, during a display stage, the lamp panel to emit light; and the control unit is connected to the plurality of drive units, and is configured to detect an operating state of the drive units driving the lamp panel to emit light; wherein in response to detecting that a first drive unit is abnormal, the lamp panel is driven, by a second drive unit, to emit light, wherein the first drive unit is at least one of the drive units driving the lamp panel to emit light, and the second drive unit is at least one of the plurality of drive units other than the first drive unit; and the power supply unit is connected to the plurality of drive units. In some embodiments, the power supply unit includes a power supply selector and a plurality of power supply sub-units, wherein the power supply selector is connected to the plurality of power supply sub-units and the plurality of drive units; and the power supply selector is configured to receive voltages provided by the plurality of power supply sub-units, and to output a higher voltage among the voltages provided by the plurality of power supply sub-units to the plurality of drive units. In some embodiments, the power supply selector includes a plurality of diodes; wherein an anode of each of the diodes is connected to an output terminal of one of the plurality of power supply sub-units, the power supply sub-units connected to different diodes are different, and cathodes of the plurality of diodes are connected and respectively connected to the plurality of drive units. In some embodiments, the drive units driving the lamp panel to emit light include at least two of the plurality of drive units; and the lamp panel comprises a plurality of light-emitting units arranged in arrays, each of the light-emitting units comprising a plurality of light-emitting devices for emitting light of different colors, and the plurality of light-emitting units comprise a plurality of light-emitting unit sets arranged in an array, wherein each of the light-emitting unit sets comprises at least two subsets, each of the subsets comprising at least one light-emitting unit, and light-emitting units in different subsets being connected to different drive units in the at least two drive units. In some embodiments, the light-emitting units in the at least two subsets are alternately arranged in a first direction and/or a second direction. In some embodiments, each of the light-emitting unit sets includes two of the subsets, each of the subsets including two light-emitting units. In some embodiments, the at least two drive units are configured to output, during the display stage, a first drive current to the light-emitting devices of each of the light-emitting units to drive the lamp panel to display a target screen; and the at least two drive units are further configured to stop, in response to a faulty light-emitting unit exist