WO2022007085A1 - 显示设备及显示装置 - Google Patents

显示设备及显示装置 Download PDF

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Publication number
WO2022007085A1
WO2022007085A1 PCT/CN2020/107319 CN2020107319W WO2022007085A1 WO 2022007085 A1 WO2022007085 A1 WO 2022007085A1 CN 2020107319 W CN2020107319 W CN 2020107319W WO 2022007085 A1 WO2022007085 A1 WO 2022007085A1
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WO
WIPO (PCT)
Prior art keywords
current value
display device
potential
electrical signal
temperature
Prior art date
Application number
PCT/CN2020/107319
Other languages
English (en)
French (fr)
Inventor
肖波
Original Assignee
Tcl华星光电技术有限公司
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Publication date
Application filed by Tcl华星光电技术有限公司 filed Critical Tcl华星光电技术有限公司
Priority to US17/053,536 priority Critical patent/US20220301514A1/en
Publication of WO2022007085A1 publication Critical patent/WO2022007085A1/zh

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Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
    • G09G3/3611—Control of matrices with row and column drivers
    • G09G3/3696—Generation of voltages supplied to electrode drivers
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
    • G01K7/16—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements
    • G01K7/22—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements the element being a non-linear resistance, e.g. thermistor
    • G01K7/24—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements the element being a non-linear resistance, e.g. thermistor in a specially-adapted circuit, e.g. bridge circuit
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2300/00—Aspects of the constitution of display devices
    • G09G2300/04—Structural and physical details of display devices
    • G09G2300/0404—Matrix technologies
    • G09G2300/0408—Integration of the drivers onto the display substrate
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2310/00—Command of the display device
    • G09G2310/08—Details of timing specific for flat panels, other than clock recovery
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/04—Maintaining the quality of display appearance
    • G09G2320/041—Temperature compensation
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2330/00—Aspects of power supply; Aspects of display protection and defect management
    • G09G2330/02—Details of power systems and of start or stop of display operation
    • G09G2330/025—Reduction of instantaneous peaks of current
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2330/00—Aspects of power supply; Aspects of display protection and defect management
    • G09G2330/04—Display protection
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2330/00—Aspects of power supply; Aspects of display protection and defect management
    • G09G2330/12—Test circuits or failure detection circuits included in a display system, as permanent part thereof

Definitions

  • the present application relates to the technical field of overcurrent protection, in particular to the technical field of overcurrent protection of display panels, and in particular to a display device and a display device.
  • Overcurrent protection is widely used in electronic products to avoid or reduce overcurrent damage to electronic products.
  • Display products are one of the more expensive electronic products. Therefore, setting the overcurrent protection function for the display products may prolong the service life of the display products.
  • overcurrent is often accompanied by changes in temperature, and as the temperature changes, the occurrence/judgment conditions of overcurrent also change.
  • the overcurrent threshold of the display product is often a fixed temperature value or temperature range, which seriously reduces the accuracy of the overcurrent judgment, thereby increasing the possibility of overcurrent damage.
  • the present application provides a display device, which solves the problem that the accuracy of judging the overcurrent is low, which increases the possibility of being damaged by the overcurrent.
  • the present application provides a display device, which includes a temperature detection module, a current detection module, and a potential transfer module; the temperature detection module is used to detect the temperature of the display panel, so as to output corresponding electric Signal; current detection module, used to detect the real-time current value flowing through the display panel; and potential transfer module, connected with the temperature detection module, the current detection module and the display panel, used to access the electrical signal and real-time current value , and output the corresponding potential signal to the display panel according to the comparison result between the real-time current value and the preset current value; wherein, the potential transfer module configures the corresponding preset current value according to the electrical signal; and when the real-time current value is greater than or equal to the preset value When the current value is reached, the potential transfer module stops outputting.
  • the display panel is a liquid crystal display panel provided with a GOA circuit; the temperature detection module is used to detect the temperature of the area related to the GOA circuit; the current detection module is used for It is used to detect the real-time current value flowing through the GOA circuit.
  • the potential transfer module acquires the electrical signal at regular intervals to update the preset current value corresponding to the electrical signal.
  • the temperature detection module includes a voltage dividing resistor and a thermistor for detecting the temperature of the display panel; the first voltage signal and the first end of the thermistor connected; the second end of the thermistor is connected with the first end of the voltage dividing resistor, and the connected node outputs an electrical signal; the second end of the voltage dividing resistor is connected with the second voltage signal; wherein, the potential of the first voltage signal is high at the potential of the second voltage signal.
  • the display device further includes a power management module; the power management module is connected to at least the potential transfer module to supply the potential transfer module.
  • the potential transfer module includes a control unit, a storage unit and an output unit; the power management module is at least connected to the control unit; the control unit is connected to the temperature detector The measurement module, the current detection module, the storage unit and the output unit are connected; the control unit calls the corresponding preset current value in the storage unit according to the electrical signal to compare with the real-time current value; when the real-time current value is greater than or equal to the preset current value When , the control unit outputs a control signal to the power management module; the power management module stops the power supply potential transfer module according to the control signal.
  • the thermistor is a thermistor with a negative temperature coefficient.
  • the electrical signal is a voltage signal.
  • the potential transfer module stores a plurality of sets of preset current values corresponding to the potentials of the electrical signals.
  • the temperature and the potential of the electrical signal are in a positive changing relationship.
  • the electric potential of the electrical signal and the preset current value have an inverse relationship.
  • the present application provides a display device, which includes the display device in any of the foregoing embodiments.
  • the display device further includes a timing controller; the timing controller is at least connected to the potential transfer module.
  • the potential transfer module can configure the corresponding preset current value according to the electrical signal, which improves the accuracy of overcurrent judgment; when the real-time current value is greater than or equal to the preset current value, the potential transfer module Stopping the output can reduce or prevent the display panel from being damaged by overcurrent.
  • FIG. 1 is one of schematic structural diagrams of a display device provided by an embodiment of the present application.
  • FIG. 2 is a second schematic structural diagram of a display device provided by an embodiment of the present application.
  • FIG. 3 is a third schematic structural diagram of a display device provided by an embodiment of the present application.
  • FIG. 4 is a fourth schematic structural diagram of a display device provided by an embodiment of the present application.
  • FIG. 5 is a schematic structural diagram of a display device provided by an embodiment of the present application.
  • FIG. 6 is a schematic diagram of a corresponding relationship between an electrical signal and a temperature according to an embodiment of the present application.
  • FIG. 7 is a schematic diagram of a corresponding relationship between a preset current value and a temperature according to an embodiment of the present application.
  • FIG. 8 is a schematic diagram of a correspondence between an electrical signal and a preset current value according to an embodiment of the present application.
  • this embodiment provides a display device, which includes a temperature detection module 10 , a current detection module 30 and a potential transfer module 20 ;
  • the temperature detection module 10 is used to detect the temperature of the display panel 40 . , to output the corresponding electrical signal according to the temperature;
  • the current detection module 30 is used to detect the real-time current value flowing through the display panel 40;
  • the panel 40 is connected for accessing the electrical signal and the real-time current value, and according to the comparison result of the real-time current value and the preset current value, the corresponding potential signal is output to the display panel 40; wherein, the potential transfer module 20 is configured according to the electrical signal corresponding to and when the real-time current value is greater than or equal to the preset current value, the potential transfer module 20 stops outputting.
  • the potential transfer module 20 can work normally to output normally.
  • a plurality of sets of preset current values corresponding thereto may be set according to the properties of the electrical signal, so as to further improve the accuracy of judging the occurrence of overcurrent.
  • the properties of the electrical signal can be, but are not limited to, the potential Vfb of the electrical signal, or the current value of the electrical signal, etc., which are used to form a corresponding relationship with the temperature, so as to more accurately determine the occurrence of overcurrent as the temperature changes. constantly changing overcurrent threshold.
  • the display device of the present disclosure When the display device of the present disclosure is applied to the field of the display panel 40, when the overcurrent occurs, it can precisely protect the glass components in the display panel 40, for example, the glass substrate and other materials, from or reduce the overcurrent damage with the greatest strength, Reduce maintenance costs when overcurrent occurs and extend its service life.
  • the potential transfer module 20 can output the corresponding high potential signal and/or the low potential signal to the display panel 40, but stops supplying the corresponding high potential signal and/or the corresponding high potential signal to the display panel 40 when the occurrence of overcurrent is detected. /or the low-level signal can eliminate or reduce the damage degree or the damage range of the display panel 40 .
  • the display panel 40 is a liquid crystal display panel 40 provided with a GOA circuit 41 ; the temperature detection module 10 is used to detect the temperature of a region related to the GOA circuit 41 ; the current detection module 30 is used to detect the real-time current value flowing through the GOA circuit 41 .
  • any electrical unit may be, but not limited to, the GOA circuit 41 , or may be a data driver in the display panel 40 , or a pixel circuit, or a clock signal line, a start signal line, or the like.
  • the GOA circuit 41 is located at least on one side of the display panel 40 .
  • the temperature detection module 10 can detect the surface temperature of the GOA circuit 41 area.
  • the surface temperature of the GOA circuit 41 area is usually below 45°C or below 55°C, and 45°C to 55°C is on the high side
  • multiple groups of temperature points are usually selected in the range of below 45°C, or below 55°C, or from 45°C to 55°C, and the electrical signals corresponding to the temperature points are recorded to obtain electrical signals corresponding to the temperature points.
  • the preset current value corresponding to the signal is stored in the potential transfer module 20 .
  • the potential transfer module 20 acquires the electrical signal at regular intervals to update the preset current value corresponding to the electrical signal.
  • the potential transfer module 20 acquires the electrical signal at a fixed interval, and correspondingly updates the preset current value corresponding to the electrical signal at the fixed interval.
  • the frequency of acquiring the electrical signal and updating the preset current value by the potential transfer module 20 can be reduced, and the workload thereof can be reduced, thereby facilitating the realization of the accurate overcurrent protection function with lower power consumption.
  • the fixed interval time may be, but not limited to, zero seconds, or an interval greater than zero.
  • T N*TF, where N is a natural number greater than zero, and TF is a The time period of the frame picture.
  • the temperature detection module 10 includes a voltage dividing resistor R2 and a thermistor R1 for detecting the temperature of the display panel 40; One end is connected; the second end of the thermistor R1 is connected with the first end of the voltage dividing resistor R2, and the connected node outputs an electrical signal; the second end of the voltage dividing resistor R2 is connected with the second voltage signal; wherein, the first The potential of the voltage signal VDD is higher than that of the second voltage signal.
  • the potential of the electrical signal Vfb VDD*R2/(R1+R2), where VDD is the first voltage signal VDD, and at this time, the second voltage signal is zero potential.
  • the first voltage signal VDD can be, but is not limited to, a DC potential signal greater than zero, and the second voltage signal is a DC potential signal not greater than zero or a potential signal connected to ground potential and zero potential;
  • the first voltage signal VDD and the second voltage signal may constitute a corresponding voltage difference, so as to satisfy the normal operation of this embodiment.
  • the display device further includes a power management module 50 ; the power management module 50 is at least connected to the potential transfer module 20 to supply power to the potential transfer module 20 .
  • the power management module 50 can provide corresponding power for the display device, and have corresponding power management, or the function of controlling power management.
  • the relationship between the power management module 50 and other parts in the display device is not It affects the normal implementation of the present disclosure and will not be described in detail again.
  • the potential transfer module 20 includes a control unit 21 , a storage unit 22 and an output unit 23 ; the power management module 50 is at least connected to the control unit 21 ; the control unit 21 is connected to the temperature detection module 10 , the current detection module 30, the storage unit 22 and the output unit 23 are connected; the control unit 21 calls the corresponding preset current value in the storage unit 22 according to the electrical signal to compare with the real-time current value; when the real-time current value is greater than or equal to the preset current value When setting the current value, the control unit 21 outputs a control signal to the power management module 50 ; the power management module 50 stops the power supply potential transfer module 20 according to the control signal.
  • the storage unit 22 stores a plurality of sets of preset current values corresponding to a certain attribute of the electrical signal, that is, the electrical signal and the preset current value may be, but not limited to, a one-to-one correspondence, or may be One-to-many, or many-to-one, or a point value and a range value corresponding to each other.
  • the power management module 50 can cut off the power supply to the potential transfer module 20 according to the high potential/low potential of the control signal, so that the potential transfer module 20 stops outputting or stops working.
  • the thermistor R1 can be, but is not limited to, a thermistor R1 with a negative temperature coefficient, or a thermistor R1 with a positive temperature coefficient.
  • the voltage dividing resistor R2 can be selected or not selected. with the location of thermistor R1.
  • the voltage dividing resistor R2 can also be an adjustable resistor, which is convenient for pre-test and post-maintenance. For example, when electronic components are aged or used for a period of time, the resistance value changes, which will affect the proportional coefficient between temperature and electrical signal, thereby reducing the accuracy of overcurrent protection. At this time, adjustable resistance can be used to readjust the temperature and electrical signals. The proportional coefficient between the electrical signals is free from the replacement of the voltage dividing resistor R2 or the thermistor R1.
  • the voltage dividing resistor R2 or the thermistor R1 is a semiconductor component, which can also be integrated in the corresponding film layer structure of the display panel 40, such as the film layer structure in the area where the GOA circuit 41 is located, which can save energy. Installation process for accurate temperature measurement.
  • the electrical signal may be, but is not limited to, a voltage signal, and may also be a current signal.
  • the potential transfer module 20 stores a plurality of sets of preset current values corresponding to the potential Vfb of the electrical signal.
  • the temperature and the potential Vfb of the electrical signal may be in a positive changing relationship, but not limited to.
  • the potential Vfb of the electrical signal and the preset current value may be in an inverse relationship, but not limited to.
  • the positive change relationship in the corresponding embodiment may be that as the temperature increases, the potential Vfb or current value of the electrical signal also increases; further, the positive change relationship may also be a proportional relationship.
  • the inverse variation relationship in the corresponding embodiment may be that as the potential Vfb or the current value of the electrical signal increases, the preset current value also decreases; further, the inverse variation relationship may also be an inverse proportional relationship.
  • the present application provides a display device, which includes the display device in any of the foregoing embodiments.
  • the display device further includes a timing controller 60 ; the timing controller 60 is at least connected to the potential transfer module 20 . It can be understood that the timing controller 60 can provide the potential transfer module 20 with at least one of square wave signals such as a start signal and a clock signal.
  • the thermistor R1 is a thermistor R1 with a negative temperature coefficient.
  • the temperature Ta and the potential Vfb of the electrical signal And the corresponding relationship between the preset current values I_ocp satisfies the data shown in Table 1-1.

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  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
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  • Crystallography & Structural Chemistry (AREA)
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  • Nonlinear Science (AREA)
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Abstract

一种显示设备及显示装置，电位转移模块（20）可以根据电信号配置对应的预设电流值，提高了过流判断的精准性；当实时电流值大于或者等于预设电流值时，电位转移模块（20）停止输出，可以降低或者避免显示面板受到过流损害。

Description

显示设备及显示装置 技术领域
本申请涉及过流保护技术领域，尤其涉及显示面板的过流保护技术领域，具体涉及一种显示设备及显示装置。
 背景技术
过流保护广泛应用于电子产品，以避免或者减轻电子产品受到的过流损坏。而显示产品属于电子产品中较为昂贵的一种，因此，为显示产品设置过流保护功能，可能会延长显示产品的使用寿命。
众所周知，过流往往伴随着温度的变化，随着温度的变化，过流的发生/判断条件也随之变化。但是，在传统的技术方案中，显示产品的过流阈值经常是固定的温度值或者温度范围，严重降低了过流判断的精准性，进而增加了其受到过流损害的可能性。
 技术问题
本申请提供一种显示设备，解决了判断过流的精准性较低，致使受到过流损害的可能性增加的问题。
 技术解决方案
第一方面，本申请提供了一种显示设备，其包括温度侦测模块、电流侦测模块以及电位转移模块；温度侦测模块，用于侦测显示面板的温度，以根据温度输出对应的电信号；电流侦测模块，用于侦测流经显示面板的实时电流值；以及电位转移模块，与温度侦测模块、电流侦测模块以及显示面板连接，用于接入电信号和实时电流值，并根据实时电流值与预设电流值的比较结果，输出对应的电位信号至显示面板；其中，电位转移模块根据电信号配置对应的预设电流值；且当实时电流值大于或者等于预设电流值时，电位转移模块停止输出。
基于第一方面，在第一方面的第一种实施方式中，显示面板为设置有GOA电路的液晶显示面板；温度侦测模块用于侦测与GOA电路相关区域的温度；电流侦测模块用于侦测流经GOA电路的实时电流值。
基于第一方面，在第一方面的第二种实施方式中，电位转移模块以固定间隔时间获取电信号，以更新与电信号相对应的预设电流值。
基于第一方面，在第一方面的第三种实施方式中，温度侦测模块包括分压电阻和用于侦测显示面板温度的热敏电阻；第一电压信号与热敏电阻的第一端连接；热敏电阻的第二端与分压电阻的第一端连接，且连接的节点输出电信号；分压电阻的第二端与第二电压信号连接；其中，第一电压信号的电位高于第二电压信号的电位。
基于第一方面，在第一方面的第四种实施方式中，显示设备还包括电源管理模块；电源管理模块至少与电位转移模块连接，以供电电位转移模块。
基于第一方面的第四种实施方式，在第一方面的第五种实施方式中，电位转移模块包括控制单元、存储单元以及输出单元；电源管理模块至少与控制单元连接；控制单元与温度侦测模块、电流侦测模块、存储单元以及输出单元连接；控制单元根据电信号调用存储单元中对应的预设电流值，以与实时电流值进行比较；当实时电流值大于或者等于预设电流值时，控制单元输出控制信号至电源管理模块；电源管理模块根据控制信号停止供电电位转移模块。
基于第一方面的第三种实施方式，在第一方面的第六种实施方式中，热敏电阻为负温度系数的热敏电阻。
基于第一方面的上述任一实施方式，在第一方面的第七种实施方式中，电信号为电压信号。
基于第一方面的第七种实施方式，在第一方面的第八种实施方式中，电位转移模块存储有多组与电信号的电位相对应的预设电流值。
基于第一方面的第七种实施方式，在第一方面的第九种实施方式中，温度与电信号的电位为正向变化关系。
基于第一方面的第七种实施方式，在第一方面的第十种实施方式中，电信号的电位与预设电流值为反向变化关系。
第二方面，本申请提供了一种显示装置，其包括上述任一实施方式中的显示设备。
基于第二方面，在第二方面的第一种实施方式中，显示装置还包括时序控制器；时序控制器至少与电位转移模块连接。
 有益效果
本申请提供的显示设备及显示装置，电位转移模块可以根据电信号配置对应的预设电流值，提高了过流判断的精准性；当实时电流值大于或者等于预设电流值时，电位转移模块停止输出，可以降低或者避免显示面板受到过流损害。
 附图说明
图1为本申请实施例提供的显示设备的结构示意图之一。
图2为本申请实施例提供的显示设备的结构示意图之二。
图3为本申请实施例提供的显示设备的结构示意图之三。
图4为本申请实施例提供的显示设备的结构示意图之四。
图5为本申请实施例提供的显示装置的结构示意图。
图6为本申请实施例提供的电信号与温度的一种对应关系示意图。
图7为本申请实施例提供的预设电流值与温度的一种对应关系示意图。
图8为本申请实施例提供的电信号与预设电流值的一种对应关系示意图。
 本发明的实施方式
为使本申请的目的、技术方案及效果更加清楚、明确，以下参照附图并举实施例对本申请进一步详细说明。应当理解，此处所描述的具体实施例仅用以解释本申请，并不用于限定本申请。
如图1所示，本实施例提供了一种显示设备，其包括温度侦测模块10、电流侦测模块30以及电位转移模块20；温度侦测模块10，用于侦测显示面板40的温度，以根据温度输出对应的电信号；电流侦测模块30，用于侦测流经显示面板40的实时电流值；以及电位转移模块20，与温度侦测模块10、电流侦测模块30以及显示面板40连接，用于接入电信号和实时电流值，并根据实时电流值与预设电流值的比较结果，输出对应的电位信号至显示面板40；其中，电位转移模块20根据电信号配置对应的预设电流值；且当实时电流值大于或者等于预设电流值时，电位转移模块20停止输出。
可以理解的是，当实时电流值小于或者等于预设电流值时，电位转移模块20可以正常工作，以正常输出。
需要进行说明的是，本实施例中，可以根据电信号的属性设置多组与其对应的预设电流值，以进一步提高判断过流发生的精准性。其中，电信号的属性可以但不限于为电信号的电位Vfb，也可以是电信号的电流值等，其用于与温度形成对应的关系，以便更精准地判断随着温度变化，过流发生时不断变化的过流阈值。
可以理解的是，本申请中的过流，与过电流相一致。
当本公开的显示设备应用于显示面板40领域时，在过流发生时，其可以以最大力度精准地保护显示面板40中的玻璃部件，例如，玻璃基板等材质免受或者减少过流损害，降低过流发生时的维护成本，延长其使用寿命。
可以理解的是，电位转移模块20可以但不限于输出对应的高电位信号和/或低电位信号至显示面板40，当检测到过流发生时，停止向显示面板40供给对应的高电位信号和/或低电位信号，可以消除或者减少显示面板40的受损程度或者受损范围。
如图2所示，在其中一个实施例中，显示面板40为设置有GOA电路41的液晶显示面板40；温度侦测模块10用于侦测与GOA电路41相关区域的温度；电流侦测模块30用于侦测流经GOA电路41的实时电流值。
可以理解的是，电流侦测模块30可以选择侦测流经显示面板40的任一电性单元中的电流值，同时温度侦测模块10可以选择选择侦测对应的任一电性单元的温度，至于温度或者电流的侦测属于本领域技术人员可以理解的范畴，不再敷述。而在本实施例中，任一电性单元可以但不限于为GOA电路41，也可以是显示面板40中的数据驱动器，或者像素电路，或者是时钟信号线，起始信号线等。
其中，GOA电路41至少位于显示面板40的一侧。
其中，温度侦测模块10可以侦测GOA电路41区域的表面温度，正常工作中，GOA电路41区域的表面温度通常位于45℃以下，或者55℃以下，而位于45℃至55℃属于偏高的温度范围，在设计阶段，通常会在45℃以下，或者55℃以下，或者45℃至55℃的范围中选择多组温度点，记录与所述温度点对应的电信号，以获得与电信号相对应的预设电流值，并将预设电流值存储在电位转移模块20中。
在其中一个实施例中，电位转移模块20以固定间隔时间获取电信号，以更新与电信号相对应的预设电流值。
可以理解的是，在本实施例中，电位转移模块20以固定间隔时间获取电信号，并对应地以固定间隔时间更新与电信号相对应的预设电流值。可以减少电位转移模块20获取电信号、更新预设电流值的频次，减少其工作量，进而有利于以较低的功耗实现精准的过流保护功能。
其中，固定间隔时间可以但不限于为零秒，也可以是大于零的一个间隔时间，例如，固定间隔时间T=N*TF，其中，N为大于零的自然数，TF为显示面板40显示一帧画面的时间周期。
如图2所示，在其中一个实施例中，温度侦测模块10包括分压电阻R2和用于侦测显示面板40温度的热敏电阻R1；第一电压信号VDD与热敏电阻R1的第一端连接；热敏电阻R1的第二端与分压电阻R2的第一端连接，且连接的节点输出电信号；分压电阻R2的第二端与第二电压信号连接；其中，第一电压信号VDD的电位高于第二电压信号的电位。
需要进行说明的是，在本实施例中，电信号的电位Vfb=VDD*R2/(R1+R2)，其中，VDD为第一电压信号VDD，此时，第二电压信号为零电位。
可以理解的是，第一电压信号VDD可以但不限于为大于零的直流电位信号，第二电压信号为不大于零的直流电位信号或者是与地电位、零电位相连接的一种电位信号；第一电压信号VDD、第二电压信号可以构成对应的压差，以满足本实施例的正常工作。
如图3所示，在其中一个实施例中，显示设备还包括电源管理模块50；电源管理模块50至少与电位转移模块20连接，以供电电位转移模块20。
可以理解的是，电源管理模块50可以为显示设备提供对应的电源，并具有对应的电源管理，或者控制电源管理的功能，在此，电源管理模块50与显示设备中的其他部分的关系并不影响本公开的正常实施，不再详述。
如图4所示，在其中一个实施例中，电位转移模块20包括控制单元21、存储单元22以及输出单元23；电源管理模块50至少与控制单元21连接；控制单元21与温度侦测模块10、电流侦测模块30、存储单元22以及输出单元23连接；控制单元21根据电信号调用存储单元22中对应的预设电流值，以与实时电流值进行比较；当实时电流值大于或者等于预设电流值时，控制单元21输出控制信号至电源管理模块50；电源管理模块50根据控制信号停止供电电位转移模块20。
可以理解的是，存储单元22中存储有多组与电信号的某一属性相对应的预设电流值，即电信号与预设电流值可以但不限于是一一对应的关系，也可以是一对多，或者是多对一，或者是相互对应的一个点值与一个范围值。
其中，电源管理模块50可以根据控制信号的高电位/低电位，来切断对电位转移模块20的供电，使电位转移模块20停止输出或者停止工作。
在其中一个实施例中，热敏电阻R1可以但不限于为负温度系数的热敏电阻R1，也可以是正温度系数的热敏电阻R1，对应地，也可以选择或者不选择调换分压电阻R2与热敏电阻R1的位置。其中，分压电阻R2也可以为可调电阻，便于前期测试和后期维护。例如，电子元器件老化或者使用一段时间后，阻值发生变化，会影响温度与电信号之间的比例系数，进而降低过流保护的精准性，这时可以利用可调电阻，重新调整温度与电信号之间的比例系数，免于分压电阻R2或者热敏电阻R1的更换。
其中，可以理解的是，分压电阻R2或者热敏电阻R1属于半导体元器件，其同样可以集成在显示面板40的对应膜层结构中，例如GOA电路41所在区域的膜层结构中，可以节省安装过程，以便于精准测量温度。
在其中一个实施例中，电信号可以但不限于为电压信号，也可以是电流信号。
在其中一个实施例中，电位转移模块20存储有多组与电信号的电位Vfb相对应的预设电流值。
在其中一个实施例中，温度与电信号的电位Vfb可以但不限于为正向变化关系。
在其中一个实施例中，电信号的电位Vfb与预设电流值可以但不限于为反向变化关系。
可以理解的是，对应实施例中的正向变化关系可以为，随着温度的升高，电信号的电位Vfb或者电流值也随着增大；进一步地，正向变化关系也可以是正比例关系。对应实施例中的反向变化关系可以为，随着电信号的电位Vfb或者电流值的增大，预设电流值也随着减小；进一步地，反向变化关系也可以是反比例关系。
在其中一个实施例中，本申请提供了一种显示装置，其包括上述任一实施例中的显示设备。
如图5所示，在其中一个实施例中，显示装置还包括时序控制器60；时序控制器60至少与电位转移模块20连接。可以理解的是，时序控制器60可以为电位转移模块20提供起始信号、时钟信号等方波信号中的至少一种。
如图6、图7以及图8所示，热敏电阻R1为负温度系数的热敏电阻R1，依照图2所示的温度侦测模块10进行侦测时，温度Ta、电信号的电位Vfb以及预设电流值I_ocp之间的对应关系满足表1-1所示的数据。
表1-1
Ta（℃） Vfb （V） I_ocp（mA）
-5 0.5 53
5 0.7 48
25 1 40
40 1.5 35
50 2 30
可以理解的是，表1-1给出的对应数据关系仅为佐证本公开的对应实施例，以进一步支持本公开的发明进步性，并不作为限制本发明实施的手段。
可以理解的是，对本领域普通技术人员来说，可以根据本申请的技术方案及其发明构思加以等同替换或改变，而所有这些改变或替换都应属于本申请所附的权利要求的保护范围。

Claims (20)

  1. 一种显示设备，其中，包括：
    温度侦测模块，用于侦测显示面板的温度，以根据所述温度输出对应的电信号；
    电流侦测模块，用于侦测流经所述显示面板的实时电流值；以及
    电位转移模块，与所述温度侦测模块、所述电流侦测模块以及所述显示面板连接，用于接入所述电信号和所述实时电流值，并根据所述实时电流值与预设电流值的比较结果，输出对应的电位信号至所述显示面板；
    其中，所述电位转移模块根据所述电信号配置对应的所述预设电流值；且当所述实时电流值大于或者等于所述预设电流值时，所述电位转移模块停止输出；所述电信号为电压信号。
  2. 根据权利要求1所述的显示设备，其中，所述显示面板为设置有GOA电路的液晶显示面板；
    所述温度侦测模块用于侦测与所述GOA电路相关区域的温度；所述电流侦测模块用于侦测流经所述GOA电路的实时电流值。
  3. 根据权利要求1所述的显示设备，其中，所述电位转移模块以固定间隔时间获取所述电信号，以更新与所述电信号相对应的所述预设电流值。
  4. 根据权利要求1所述的显示设备，其中，所述温度侦测模块包括分压电阻和用于侦测所述显示面板温度的热敏电阻；
    第一电压信号与所述热敏电阻的第一端连接；所述热敏电阻的第二端与所述分压电阻的第一端连接，且连接的节点输出所述电信号；所述分压电阻的第二端与第二电压信号连接；其中，所述第一电压信号的电位高于所述第二电压信号的电位。
  5. 根据权利要求1所述的显示设备，其中，所述显示设备还包括电源管理模块；
    所述电源管理模块至少与所述电位转移模块连接，以供电所述电位转移模块。
  6. 根据权利要求5所述的显示设备，其中，所述电位转移模块包括控制单元、存储单元以及输出单元；
    所述电源管理模块至少与所述控制单元连接；所述控制单元与所述温度侦测模块、所述电流侦测模块、所述存储单元以及所述输出单元连接；
    所述控制单元根据所述电信号调用所述存储单元中对应的所述预设电流值，以与所述实时电流值进行比较；当所述实时电流值大于或者等于所述预设电流值时，所述控制单元输出控制信号至所述电源管理模块；所述电源管理模块根据所述控制信号停止供电所述电位转移模块。
  7. 根据权利要求4所述的显示设备，其中，所述热敏电阻为负温度系数的热敏电阻。
  8. 根据权利要求1所述的显示设备，其中，所述电位转移模块存储有多组与所述电信号的电位相对应的所述预设电流值。
  9. 一种显示设备，其中，包括：
    温度侦测模块，用于侦测显示面板的温度，以根据所述温度输出对应的电信号；
    电流侦测模块，用于侦测流经所述显示面板的实时电流值；以及
    电位转移模块，与所述温度侦测模块、所述电流侦测模块以及所述显示面板连接，用于接入所述电信号和所述实时电流值，并根据所述实时电流值与预设电流值的比较结果，输出对应的电位信号至所述显示面板；
    其中，所述电位转移模块根据所述电信号配置对应的所述预设电流值；且当所述实时电流值大于或者等于所述预设电流值时，所述电位转移模块停止输出。
  10. 根据权利要求9所述的显示设备，其中，所述显示面板为设置有GOA电路的液晶显示面板；
    所述温度侦测模块用于侦测与所述GOA电路相关区域的温度；所述电流侦测模块用于侦测流经所述GOA电路的实时电流值。
  11. 根据权利要求10所述的显示设备，其中，所述电位转移模块以固定间隔时间获取所述电信号，以更新与所述电信号相对应的所述预设电流值。
  12. 根据权利要求11所述的显示设备，其中，所述温度侦测模块包括分压电阻和用于侦测所述显示面板温度的热敏电阻；
    第一电压信号与所述热敏电阻的第一端连接；所述热敏电阻的第二端与所述分压电阻的第一端连接，且连接的节点输出所述电信号；所述分压电阻的第二端与第二电压信号连接；其中，所述第一电压信号的电位高于所述第二电压信号的电位。
  13. 根据权利要求9所述的显示设备，其中，所述显示设备还包括电源管理模块；
    所述电源管理模块至少与所述电位转移模块连接，以供电所述电位转移模块。
  14. 根据权利要求13所述的显示设备，其中，所述电位转移模块包括控制单元、存储单元以及输出单元；
    所述电源管理模块至少与所述控制单元连接；所述控制单元与所述温度侦测模块、所述电流侦测模块、所述存储单元以及所述输出单元连接；
    所述控制单元根据所述电信号调用所述存储单元中对应的所述预设电流值，以与所述实时电流值进行比较；当所述实时电流值大于或者等于所述预设电流值时，所述控制单元输出控制信号至所述电源管理模块；所述电源管理模块根据所述控制信号停止供电所述电位转移模块。
  15. 根据权利要求12所述的显示设备，其中，所述热敏电阻为负温度系数的热敏电阻。
  16. 根据权利要求9所述的显示设备，其中，所述电位转移模块存储有多组与所述电信号的电位相对应的所述预设电流值。
  17. 根据权利要求9所述的显示设备，其中，所述温度与所述电信号的电位为正向变化关系。
  18. 根据权利要求9所述的显示设备，其中，所述电信号的电位与所述预设电流值为反向变化关系。
  19. 一种显示装置，其中，包括如权利要求1所述的显示设备。
  20. 根据权利要求19所述的显示装置，其中，所述显示装置还包括时序控制器；所述时序控制器至少与所述电位转移模块连接。
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