WO2017152466A1 - 集成于液晶显示面板内的温度感测系统及液晶显示面板 - Google Patents

集成于液晶显示面板内的温度感测系统及液晶显示面板 Download PDF

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WO2017152466A1
WO2017152466A1 PCT/CN2016/079162 CN2016079162W WO2017152466A1 WO 2017152466 A1 WO2017152466 A1 WO 2017152466A1 CN 2016079162 W CN2016079162 W CN 2016079162W WO 2017152466 A1 WO2017152466 A1 WO 2017152466A1
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Prior art keywords
liquid crystal
crystal display
display panel
metal conductor
electrically connected
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PCT/CN2016/079162
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English (en)
French (fr)
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陈宥烨
张裕桦
陈明暐
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深圳市华星光电技术有限公司
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Priority to US15/039,412 priority Critical patent/US10132690B2/en
Publication of WO2017152466A1 publication Critical patent/WO2017152466A1/zh

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
    • G01K1/14—Supports; Fastening devices; Arrangements for mounting thermometers in particular locations
    • 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
    • G01K7/02—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using thermoelectric elements, e.g. thermocouples
    • G01K7/04—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using thermoelectric elements, e.g. thermocouples the object to be measured not forming one of the thermoelectric materials
    • 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
    • G01K7/02—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using thermoelectric elements, e.g. thermocouples
    • G01K7/08—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using thermoelectric elements, e.g. thermocouples the object to be measured forming one of the thermoelectric materials, e.g. pointed type
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/1306—Details
    • G02F1/1309—Repairing; Testing
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/13306—Circuit arrangements or driving methods for the control of single liquid crystal cells
    • 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
    • G01K2217/00—Temperature measurement using electric or magnetic components already present in the system to be measured
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K2219/00—Thermometers with dedicated analog to digital converters
    • 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
    • G09G2330/045—Protection against panel overheating

Definitions

  • the present invention relates to the field of liquid crystal display technologies, and in particular, to a temperature sensing system and a liquid crystal display panel integrated in a liquid crystal display panel.
  • LCD Liquid Crystal Display
  • advantages such as thin body, power saving, no radiation, etc., such as: LCD TV, mobile phone, personal digital assistant (PDA), digital camera, computer screen or Laptop screens, etc., dominate the field of flat panel display.
  • PDA personal digital assistant
  • liquid crystal displays which include a liquid crystal display panel and a backlight module.
  • the working principle of the liquid crystal display panel is to fill liquid crystal molecules between a Thin Film Transistor Array Substrate (TFT Array Substrate) and a Color Filter (CF), and apply driving on the two substrates.
  • TFT Array Substrate Thin Film Transistor Array Substrate
  • CF Color Filter
  • the related functional modules, circuits, and the like are integrated into the liquid crystal display panel, such as using the array process to directly fabricate the gate scan driving circuit on the thin film transistor array substrate (Gate Driver on Array, GOA) to replace the external gate scan driver IC and other technologies is also a hot topic for many LCD panel manufacturers to further reduce production costs.
  • GOA Gate Driver on Array
  • the substrate may cause a short circuit between the circuits.
  • This short circuit phenomenon not only causes abnormal display on the screen, but also causes the temperature of the circuit to rise or even causes the liquid crystal display panel to burn out when used continuously. If it is impossible to detect a short circuit between circuits during production, the product will inevitably have a huge quality hazard, and the yield will drop, causing customer complaints and causing the product to be recalled in a batch (Call Back), resulting in a substantial increase in production costs.
  • the conventional temperature detecting method in the liquid crystal display panel is completed by a temperature detecting member that is specifically disposed outside the liquid crystal display panel.
  • the detection result of the external temperature detecting part is set by its setting bit Due to the limitation of the setting, it is impossible to detect any position in the entire liquid crystal display panel, and the detection accuracy is insufficient.
  • An object of the present invention is to provide a temperature sensing system integrated in a liquid crystal display panel, which can conveniently and accurately sense a temperature change caused by a short circuit in a liquid crystal display panel, and prevent the temperature in the liquid crystal display panel from being too high and burned. Panel to improve product yield.
  • the object of the present invention is to provide a liquid crystal display panel with a temperature sensing system therein, which can conveniently and accurately sense the temperature change caused by the short circuit of the liquid crystal display panel, and prevent the temperature in the liquid crystal display panel from being too high. Burning the panel, the product yield is high.
  • the present invention firstly provides a temperature sensing system integrated in a liquid crystal display panel, comprising: a sensing unit disposed in a display area of the liquid crystal display panel, and being disposed outside the display area of the liquid crystal display panel a calculation and control unit electrically connected to the sensing unit;
  • the sensing unit includes a first metal conductor disposed in a display area of the liquid crystal display panel and a second metal conductor, the first metal conductor being different from the material of the second metal conductor; a metal conductor and a second metal conductor are a first metal wire disposed on each metal structure layer and a trace in a display region of the liquid crystal display panel, and a second metal wire; or the first type
  • the metal conductor and the second metal conductor are respectively different metal structure layers in the display area of the liquid crystal display panel, and the trace itself;
  • the computing and control unit includes an operational amplifier electrically connected to the sensing unit, a digital-to-analog converter electrically connected to the operational amplifier, and a microcontroller electrically connected to the digital-to-analog converter.
  • the first metal conductor and the second metal conductor are electrically connected to the non-inverting input terminal and the inverting input terminal of the operational amplifier respectively; the output end of the operational amplifier is electrically connected to the input end of the digital-to-analog converter; digital-to-analog conversion The output of the device is electrically connected to the microcontroller.
  • the computing and control unit is disposed on a printed circuit board located outside of the display area of the liquid crystal display panel.
  • a connecting wire between the first metal conductor, the second metal conductor and the operational amplifier, a connecting wire between the operational amplifier and the digital-to-analog converter, and a connecting wire between the digital-to-analog converter and the microcontroller are copper line.
  • the present invention also provides a liquid crystal display panel having a temperature sensing system integrated in the liquid crystal display panel, the temperature sensing system comprising: a sensing unit disposed in a display area of the liquid crystal display panel, and a liquid crystal display a computing and control unit electrically connected to the sensing unit outside the display area of the panel;
  • the sensing unit includes a first metal guide disposed in a display area of the liquid crystal display panel And a second metal conductor, the first metal conductor is different from the material of the second metal conductor; the first metal conductor and the second metal conductor are disposed on a display area of the liquid crystal display panel The inner metal structure layer and the first metal wire on the trace and the second metal wire; or the first metal conductor and the second metal conductor are respectively different in the display area of the liquid crystal display panel Metal structure layer, and the trace itself;
  • the computing and control unit includes an operational amplifier electrically connected to the sensing unit, a digital-to-analog converter electrically connected to the operational amplifier, and a microcontroller electrically connected to the digital-to-analog converter.
  • the first metal conductor and the second metal conductor are electrically connected to the non-inverting input terminal and the inverting input terminal of the operational amplifier respectively; the output end of the operational amplifier is electrically connected to the input end of the digital-to-analog converter; digital-to-analog conversion The output of the device is electrically connected to the microcontroller.
  • the computing and control unit is disposed on a printed circuit board located outside of the display area of the liquid crystal display panel.
  • a connecting wire between the first metal conductor, the second metal conductor and the operational amplifier, a connecting wire between the operational amplifier and the digital-to-analog converter, and a connecting wire between the digital-to-analog converter and the microcontroller are copper line.
  • the present invention also provides a temperature sensing system integrated in a liquid crystal display panel, comprising: a sensing unit disposed in a display area of the liquid crystal display panel, and a display area disposed outside the liquid crystal display panel and the sensing a computing and control unit for the electrical connection of the unit;
  • the sensing unit includes a first metal conductor disposed in a display area of the liquid crystal display panel and a second metal conductor, the first metal conductor being different from the material of the second metal conductor; a metal conductor and a second metal conductor are a first metal wire disposed on each metal structure layer and a trace in a display region of the liquid crystal display panel, and a second metal wire; or the first type
  • the metal conductor and the second metal conductor are respectively different metal structure layers in the display area of the liquid crystal display panel, and the trace itself;
  • the computing and control unit includes an operational amplifier electrically connected to the sensing unit, a digital-to-analog converter electrically connected to the operational amplifier, and a microcontroller electrically connected to the digital-to-analog converter;
  • the first metal conductor and the second metal conductor are electrically connected to the non-inverting input end and the inverting input end of the operational amplifier respectively; the output end of the operational amplifier is electrically connected to the input end of the digital-to-analog converter; The output of the analog converter is electrically connected to the microcontroller.
  • the calculation and control unit is disposed on a printed circuit board located outside the display area of the liquid crystal display panel.
  • the present invention provides a temperature sensing system integrated in a liquid crystal display panel, wherein the sensing unit is disposed in a display area of the liquid crystal display panel, and the calculation and control unit is disposed in a display area of the liquid crystal display panel.
  • the sensing unit includes a first metal guide a body, and a second metal conductor, and the first metal conductor is different from the material of the second metal conductor, when there is a short circuit point between the first metal conductor and the second metal conductor, according to Seebeck Effect, a voltage difference is generated between the first metal conductor and the second metal conductor, the voltage difference is calculated and amplified by an operational amplifier in the control unit, and then converted into a digital signal by a digital-to-analog converter, and finally the microcontroller pairs the digital signal
  • the processing is performed to obtain the temperature in the liquid crystal display panel, and it is judged whether or not the protection temperature is reached, and the self-protection is performed at the same time, and the temperature change caused by the short circuit of the liquid crystal display panel can be conveniently and accurately sensed to prevent the temperature inside the liquid crystal display panel.
  • the liquid crystal display panel provided by the present invention is provided with the temperature sensing system of the present invention, which can conveniently and accurately sense the temperature change caused by the short circuit in the liquid crystal display panel, thereby preventing the temperature in the liquid crystal display panel from being too high. Burning the panel, the product yield is high.
  • FIG. 1 is a structural block diagram of a temperature sensing system integrated in a liquid crystal display panel of the present invention
  • FIG. 2 is an equivalent circuit diagram of a temperature sensing system integrated in a liquid crystal display panel of the present invention
  • FIG 3 is a schematic view showing a voltage difference generated when there is a short-circuit point between the first metal conductor and the second metal conductor in the temperature sensing system integrated in the liquid crystal display panel of the present invention.
  • the present invention firstly provides a temperature sensing system integrated in a liquid crystal display panel, comprising: a sensing unit 11 disposed in the display area 1 of the liquid crystal display panel, and a liquid crystal display
  • the computing and control unit 12 is electrically connected to the sensing unit 11 outside the display area 1 of the panel.
  • the sensing unit 11 includes a first metal conductor A disposed in the display region 1 of the liquid crystal display panel, and a second metal conductor B; the first metal conductor A and the second metal conductor B Different materials.
  • the first metal conductor A and the second metal conductor B may be a first metal wire disposed on each metal structure layer in the display region 1 of the liquid crystal display panel, and a trace, and a second a metal wire, for example, in the prior art, a TFT of a liquid crystal display panel a first metal structure layer forming a TFT gate and a scan line is disposed in the array substrate, and a second metal structure layer forming a TFT source/drain and a data line is further disposed, and then the first metal structure layer is provided with a first a metal wire and a second metal wire, the first metal wire and the second metal wire are also disposed on the second metal structure layer; the first metal conductor A and the second metal conductor B are also respectively a different metal structure layer in the display area 1 of the liquid crystal
  • the TFT array substrate of the liquid crystal display panel is provided with a first metal structure for forming a TFT gate and a scan line.
  • the calculation and control unit 12 includes an operation amplifier 115 electrically connected to the sensing unit 11 , an analog to digital converter (ADC) 122 electrically connected to the operational amplifier 121 , and The digital-to-analog converter 122 is electrically connected to a Micro Controller Unit (MCU) 123.
  • the calculation and control unit 12 is provided on the printed circuit board 2 located outside the display area 1 of the liquid crystal display panel.
  • the first metal conductor A and the second metal conductor B are respectively electrically connected to the non-inverting input terminal and the inverting input terminal of the operational amplifier 121 through a copper wire; the output end of the operational amplifier 121 is electrically connected to the number through the copper wire.
  • the input of the analog-to-digital converter 122; the output of the digital-to-analog converter 122 is electrically connected to the microcontroller 123 via a copper wire.
  • the Seebeck effect is followed, that is, when there is a short circuit between the first metal conductor A and the second metal conductor B,
  • the first metal conductor A and the second metal wire conductor B form a loop. Since the short-circuit point generates heat, a thermal current I will appear in the loop, correspondingly between the first metal conductor A and the second metal conductor B.
  • a thermoelectromotive force is generated, that is, a voltage difference ⁇ V is generated between the first metal conductor A and the second metal conductor B.
  • the voltage difference ⁇ V is relatively small.
  • the operational amplifier 121 After the voltage difference ⁇ V between the first metal conductor A and the second metal conductor B is transmitted to the operational amplifier 121 in the calculation and control unit 12, the operational amplifier 121 amplifies the voltage difference ⁇ V;
  • the digital-to-analog converter 122 in the calculation and control unit 12 receives the voltage difference amplified by the operational amplifier 121 and converts the amplified voltage difference into a digital signal; finally, the microcontroller 123 in the calculation and control unit 12
  • the digital signal is processed to obtain the temperature in the liquid crystal display panel, and it is judged whether the protection temperature is reached. If so, the self-protection function is activated to protect itself from the temperature, and the panel is prevented from rising, thereby facilitating and accurately the internal cause of the liquid crystal display panel.
  • the temperature change caused by the short circuit of the circuit is sensed to improve the yield of the liquid crystal display panel.
  • the first metal is disposed on each metal structure layer and the trace in the display region 1 of the liquid crystal display panel.
  • the genus line and the second metal wire form are applicable not only to the case of short circuit between different metal structure layers and traces, but also to the case where the same metal structure layer or the same trace itself is short-circuited;
  • the first metal conductor A and the second metal conductor B are respectively different metal structure layers in the display region 1 of the liquid crystal display panel and the form of the trace itself, and are only applicable to different metal structure layers and A short circuit between the lines.
  • the present invention further provides a liquid crystal display panel having the temperature sensing system integrated in the liquid crystal display panel as shown in FIG. 1 and FIG. 2, which can easily and accurately short circuit the circuit in the liquid crystal display panel.
  • the resulting temperature change is sensed to prevent the temperature in the liquid crystal display panel from being too high and the panel is burned, and the yield of the product is high.
  • the temperature sensing system integrated in the liquid crystal display panel will not be repeatedly described here.
  • the temperature sensing system integrated in the liquid crystal display panel of the present invention wherein the sensing unit is disposed in the display area of the liquid crystal display panel, and the calculation and control unit is disposed outside the display area of the liquid crystal display panel,
  • the sensing unit includes a first metal conductor and a second metal conductor, and the first metal conductor is different from the material of the second metal conductor, and the first metal conductor and the second metal conductor
  • a voltage difference is generated between the first metal conductor and the second metal conductor, and the voltage difference is calculated and amplified by an operational amplifier in the control unit and converted into a digital-to-analog converter.
  • the microcontroller processes the digital signal to obtain the temperature inside the liquid crystal display panel, and judges whether the protection temperature is reached, and self-protection at the same time, which can conveniently and accurately change the temperature caused by the short circuit of the liquid crystal display panel. Sensing to prevent the temperature inside the liquid crystal display panel from being too high and burning the panel to improve the yield of the product.
  • the liquid crystal display panel of the present invention is provided with the temperature sensing system of the present invention, which can conveniently and accurately sense the temperature change caused by the short circuit in the liquid crystal display panel, and prevent the temperature in the liquid crystal display panel from being too high and burned. Panel, the product yield is high.

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  • Crystallography & Structural Chemistry (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Optics & Photonics (AREA)
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Abstract

一种集成于液晶显示面板内的温度感测系统及液晶显示面板，该集成于液晶显示面板内的温度感测系统包括设于液晶显示面板的显示区域(1)内的感测单元(11)、及设于显示区域(1)之外的计算与控制单元(12)；感测单元(11)包括设置于显示区域(1)内的第一种金属导体(A)、与第二种金属导体(B)，当第一种金属导体(A)与第二种金属导体(B)之间存在短路点时，根据塞贝克效应，二者之间产生电压差，该电压差被计算与控制单元(12)中的运算放大器(121)放大之后经数模转换器(122)转换成数字信号，最后微控制器(123)对数字信号进行处理，获得液晶显示面板内的温度，并判断是否达到保护温度。

Description

集成于液晶显示面板内的温度感测系统及液晶显示面板 技术领域
本发明涉及液晶显示技术领域，尤其涉及一种集成于液晶显示面板内的温度感测系统及液晶显示面板。
背景技术
液晶显示器(Liquid Crystal Display，LCD)具有机身薄、省电、无辐射等众多优点，得到了广泛的应用，如：液晶电视、移动电话、个人数字助理(PDA)、数字相机、计算机屏幕或笔记本电脑屏幕等，在平板显示领域中占主导地位。
现有市场上的液晶显示器大部分为背光型液晶显示器，其包括液晶显示面板及背光模组(Backlight Module)。液晶显示面板的工作原理是在薄膜晶体管阵列基板(Thin Film Transistor Array Substrate，TFT Array Substrate)与彩色滤光片基板(Color Filter，CF)之间灌入液晶分子，并在两片基板上施加驱动电压来控制液晶分子的旋转方向，以将背光模组的光线折射出来产生画面。
随着液晶显示器产业制造技术的不断发展，降低成本已是目前业界最主要的发展方向之一。除了优化液晶显示器的制程、开发新型材料来降低生产成本以外，将相关功能模块、电路等集成至液晶显示面板内部，如利用阵列制程将栅极扫描驱动电路直接制作在薄膜晶体管阵列基板上(Gate Driver on Array，GOA)来取代外接的栅极扫描驱动IC等技术也是众多液晶显示面板厂商争相开发的热点内容，以进一步降低生产成本。
在进行高集成度的液晶显示面板制程时，需要较为严苛的制造环境，如若制造环境中的微粒脏污(Particle)、生产设备产生的金属异物(Metal Particle)等在制程过程中飘落进玻璃基板内，除了会造成液晶显示面板的品味不良外，更会造成电路间产生短路现象，这种短路现象不仅会造成画面显示异常，持续使用时还会使电路温度上升甚至导致液晶显示面板烧毁。如无法在生产时检测出电路间的短路，产品必然存在巨大的质量隐患，良率下降，导致客户投诉而使产品被批量召回(Call Back)，造成生产成本大幅上升。
现有的对液晶显示面板内的温度检测方式通过专门设置在液晶显示面板外部的温度检测部件来完成。外部温度检测部件的检测结果受其设置位 置的限制，无法对整个液晶显示面板内的任意位置进行检测，检测精度不足。
发明内容
本发明的目的在于提供一种集成于液晶显示面板内的温度感测系统，能够方便、准确地对液晶显示面板内因电路短路造成的温度变化进行感测，防止液晶显示面板内温度过高而烧毁面板，提高产品良率。
本发明的目的还在于提供一种液晶显示面板，其内部设有温度感测系统，能够方便、准确地对液晶显示面板内因电路短路造成的温度变化进行感测，防止液晶显示面板内温度过高而烧毁面板，产品的良率高。
为实现上述目的，本发明首先提供一种集成于液晶显示面板内的温度感测系统，包括：设于液晶显示面板的显示区域内的感测单元、及设于液晶显示面板的显示区域之外与所述感测单元电性连接的计算与控制单元；
所述感测单元包括设置于液晶显示面板的显示区域内的第一种金属导体、与第二种金属导体，所述第一种金属导体、与第二种金属导体的材料不同；所述第一种金属导体、与第二种金属导体为设置在液晶显示面板的显示区域内各金属结构层、及走线上的第一种金属线、与第二种金属线；或者所述第一种金属导体、与第二种金属导体分别为液晶显示面板的显示区域内不同的金属结构层、及走线本身；
所述计算与控制单元包括电性连接所述感测单元的运算放大器、与运算放大器电性连接的数模转换器、以及与数模转换器电性连接的微控制器。
所述第一种金属导体、第二种金属导体分别电性连接至运算放大器的同相输入端、反相输入端；运算放大器的输出端电性连接至数模转换器的输入端；数模转换器的输出端电性连接至微控制器。
所述计算与控制单元设在位于液晶显示面板的显示区域之外的印刷电路板上。
第一种金属导体、第二种金属导体与运算放大器之间的连接导线、运算放大器与数模转换器之间的连接导线、以及数模转换器与微控制器之间的连接导线均为铜线。
本发明还提供一种液晶显示面板，具有集成于液晶显示面板内的温度感测系统，所述温度感测系统包括：设于液晶显示面板的显示区域内的感测单元、及设于液晶显示面板的显示区域之外与所述感测单元电性连接的计算与控制单元；
所述感测单元包括设置于液晶显示面板的显示区域内的第一种金属导 体、与第二种金属导体，所述第一种金属导体、与第二种金属导体的材料不同；所述第一种金属导体、与第二种金属导体为设置在液晶显示面板的显示区域内各金属结构层、及走线上的第一种金属线、与第二种金属线；或者所述第一种金属导体、与第二种金属导体分别为液晶显示面板的显示区域内不同的金属结构层、及走线本身；
所述计算与控制单元包括电性连接所述感测单元的运算放大器、与运算放大器电性连接的数模转换器、以及与数模转换器电性连接的微控制器。
所述第一种金属导体、第二种金属导体分别电性连接至运算放大器的同相输入端、反相输入端；运算放大器的输出端电性连接至数模转换器的输入端；数模转换器的输出端电性连接至微控制器。
所述计算与控制单元设在位于液晶显示面板的显示区域之外的印刷电路板上。
第一种金属导体、第二种金属导体与运算放大器之间的连接导线、运算放大器与数模转换器之间的连接导线、以及数模转换器与微控制器之间的连接导线均为铜线。
本发明还提供一种集成于液晶显示面板内的温度感测系统，包括：设于液晶显示面板的显示区域内的感测单元、及设于液晶显示面板的显示区域之外与所述感测单元电性连接的计算与控制单元；
所述感测单元包括设置于液晶显示面板的显示区域内的第一种金属导体、与第二种金属导体，所述第一种金属导体、与第二种金属导体的材料不同；所述第一种金属导体、与第二种金属导体为设置在液晶显示面板的显示区域内各金属结构层、及走线上的第一种金属线、与第二种金属线；或者所述第一种金属导体、与第二种金属导体分别为液晶显示面板的显示区域内不同的金属结构层、及走线本身；
所述计算与控制单元包括电性连接所述感测单元的运算放大器、与运算放大器电性连接的数模转换器、以及与数模转换器电性连接的微控制器；
其中，所述第一种金属导体、第二种金属导体分别电性连接至运算放大器的同相输入端、反相输入端；运算放大器的输出端电性连接至数模转换器的输入端；数模转换器的输出端电性连接至微控制器。
其中，所述计算与控制单元设在位于液晶显示面板的显示区域之外的印刷电路板上。
本发明的有益效果：本发明提供的集成于液晶显示面板内的温度感测系统，其中的感测单元设置在液晶显示面板的显示区域内，计算与控制单元设置在液晶显示面板的显示区域之外，所述感测单元包括第一种金属导 体、与第二种金属导体，且所述第一种金属导体、与第二种金属导体的材料不同，当第一种金属导体与第二种金属导体之间存在短路点时，根据塞贝克效应，第一种金属导体与第二种金属导体之间产生电压差，该电压差被计算与控制单元中的运算放大器放大之后经数模转换器转换成数字信号，最后微控制器对数字信号进行处理，获得液晶显示面板内的温度，并判断是否达到保护温度，以及时进行自我保护，能够方便、准确地对液晶显示面板内因电路短路造成的温度变化进行感测，防止液晶显示面板内温度过高而烧毁面板，提高产品良率。本发提供的液晶显示面板，由于其内部设有本发明的温度感测系统，能够方便、准确地对液晶显示面板内因电路短路造成的温度变化进行感测，防止液晶显示面板内温度过高而烧毁面板，产品的良率高。
附图说明
为了能更进一步了解本发明的特征以及技术内容，请参阅以下有关本发明的详细说明与附图，然而附图仅提供参考与说明用，并非用来对本发明加以限制。
附图中，
图1为本发明的集成于液晶显示面板内的温度感测系统的结构框图；
图2为本发明的集成于液晶显示面板内的温度感测系统的等效电路图；
图3为本发明的集成于液晶显示面板内的温度感测系统中第一种金属导体与第二种金属导体之间存在短路点时产生电压差的示意图。
具体实施方式
为更进一步阐述本发明所采取的技术手段及其效果，以下结合本发明的优选实施例及其附图进行详细描述。
请同时参阅图1与图2，本发明首先提供一种集成于液晶显示面板内的温度感测系统，包括：设于液晶显示面板的显示区域1内的感测单元11、及设于液晶显示面板的显示区域1之外与所述感测单元11电性连接的计算与控制单元12。
所述感测单元11包括设置于液晶显示面板的显示区域1内的第一种金属导体A、与第二种金属导体B；所述第一种金属导体A、与第二种金属导体B的材料不同。具体地，所述第一种金属导体A、与第二种金属导体B可为设置在液晶显示面板的显示区域1内各金属结构层、及走线上的第一种金属线、与第二种金属线，例如，在现有技术中，液晶显示面板的TFT 阵列基板内设有形成TFT栅极、及扫描线的第一金属结构层，还设有形成TFT源/漏极、及数据线的第二金属结构层，那么第一金属结构层上设置第一种金属线与第二种金属线，第二金属结构层上亦设置第一种金属线与第二种金属线；所述第一种金属导体A、与第二种金属导体B也可分别为液晶显示面板的显示区域1内不同的金属结构层、及走线本身，例如，在现有技术中，液晶显示面板的TFT阵列基板内设有形成TFT栅极、及扫描线的第一金属结构层，还设有形成TFT源/漏极、及数据线的第二金属结构层，那么可将第一金属结构层本身作为第一种金属导体A，而将第二金属结构层作为第二种金属导体B。
所述计算与控制单元12包括电性连接所述感测单元11的运算放大器(Operation Amplifier)121、与运算放大器121电性连接的数模转换器(Analog to Digital Converter，ADC)122、以及与数模转换器122电性连接的微控制器(Micro Controller Unit，MCU)123。具体地，所述计算与控制单元12设在位于液晶显示面板的显示区域1之外的印刷电路板2上。所述第一种金属导体A、第二种金属导体B分别通过铜导线电性连接至运算放大器121的同相输入端、反相输入端；运算放大器121的输出端通过铜导线电性连接至数模转换器122的输入端；数模转换器122的输出端通过铜导线电性连接至微控制器123。
结合图3，由于第一种金属导体A和第二种金属导体B的材料不相同，遵循塞贝克效应，即当第一种金属导体A与第二种金属导体B之间存在短路点时，第一种金属导体A与第二种金属线导体B组成回路，由于短路点会产生热量，回路中将出现热电流I，相应地第一种金属导体A与第二种金属导体B之间会产生热电动势，也就是说第一种金属导体A与第二种金属导体B之间产生电压差△V，当然所述电压差△V是相对比较微小的。
第一种金属导体A与第二种金属导体B之间的电压差△V传输至所述计算与控制单元12中的运算放大器121后，所述运算放大器121将该电压差△V放大；所述计算与控制单元12中的数模转换器122接收经运算放大器121放大的电压差值，并将放大的电压差值转换为数字信号；最后所述计算与控制单元12中的微控制器123对数字信号进行处理，获得液晶显示面板内的温度，并判断是否达到保护温度,若是，则启动自我保护功能进行自我保护，防止温度继续升高烧毁面板，从而方便、准确地对液晶显示面板内因电路短路造成的温度变化进行感测，提高液晶显显示面板的良率。
值得一提的是，对于所述第一种金属导体A、与第二种金属导体B为设置在液晶显示面板的显示区域1内各金属结构层、及走线上的第一种金 属线、与第二种金属线的形式，不仅适用于不同金属结构层、及走线之间发生短路的情况，还适用于同一金属结构层、或同一走线本身发生短路的情况；而对于所述第一种金属导体A、与第二种金属导体B分别为液晶显示面板的显示区域1内不同的金属结构层、及走线本身的形式，则仅适用于不同金属结构层、及走线之间发生短路的情况。
基于同一发明构思，本发明还提供一种液晶显示面板，具有上述如图1与图2所示的集成于液晶显示面板内的温度感测系统，能够方便、准确地对液晶显示面板内因电路短路造成的温度变化进行感测，防止液晶显示面板内温度过高而烧毁面板，产品的良率高。此处不再对该集成于液晶显示面板内的温度感测系统进行重复描述。
综上所述，本发明的集成于液晶显示面板内的温度感测系统，其中的感测单元设置在液晶显示面板的显示区域内，计算与控制单元设置在液晶显示面板的显示区域之外，所述感测单元包括第一种金属导体、与第二种金属导体，且所述第一种金属导体、与第二种金属导体的材料不同，当第一种金属导体与第二种金属导体之间存在短路点时，根据塞贝克效应，第一种金属导体与第二种金属导体之间产生电压差，该电压差被计算与控制单元中的运算放大器放大之后经数模转换器转换成数字信号，最后微控制器对数字信号进行处理，获得液晶显示面板内的温度，并判断是否达到保护温度，以及时进行自我保护，能够方便、准确地对液晶显示面板内因电路短路造成的温度变化进行感测，防止液晶显示面板内温度过高而烧毁面板，提高产品良率。本发的液晶显示面板，由于其内部设有本发明的温度感测系统，能够方便、准确地对液晶显示面板内因电路短路造成的温度变化进行感测，防止液晶显示面板内温度过高而烧毁面板，产品的良率高。
以上所述，对于本领域的普通技术人员来说，可以根据本发明的技术方案和技术构思作出其他各种相应的改变和变形，而所有这些改变和变形都应属于本发明后附的权利要求的保护范围。

Claims (10)

  1. 一种集成于液晶显示面板内的温度感测系统，包括：设于液晶显示面板的显示区域内的感测单元、及设于液晶显示面板的显示区域之外与所述感测单元电性连接的计算与控制单元；
    所述感测单元包括设置于液晶显示面板的显示区域内的第一种金属导体、与第二种金属导体，所述第一种金属导体、与第二种金属导体的材料不同；所述第一种金属导体、与第二种金属导体为设置在液晶显示面板的显示区域内各金属结构层、及走线上的第一种金属线、与第二种金属线；或者所述第一种金属导体、与第二种金属导体分别为液晶显示面板的显示区域内不同的金属结构层、及走线本身；
    所述计算与控制单元包括电性连接所述感测单元的运算放大器、与运算放大器电性连接的数模转换器、以及与数模转换器电性连接的微控制器。
  2. 如权利要求1所述的集成于液晶显示面板内的温度感测系统，其中，所述第一种金属导体、第二种金属导体分别电性连接至运算放大器的同相输入端、反相输入端；运算放大器的输出端电性连接至数模转换器的输入端；数模转换器的输出端电性连接至微控制器。
  3. 如权利要求1所述的集成于液晶显示面板内的温度感测系统，其中，所述计算与控制单元设在位于液晶显示面板的显示区域之外的印刷电路板上。
  4. 如权利要求2所述的集成于液晶显示面板内的温度感测系统，其中，第一种金属导体、第二种金属导体与运算放大器之间的连接导线、运算放大器与数模转换器之间的连接导线、以及数模转换器与微控制器之间的连接导线均为铜线。
  5. 一种液晶显示面板，具有集成于液晶显示面板内的温度感测系统，所述温度感测系统包括设于液晶显示面板的显示区域内的感测单元、及设于液晶显示面板的显示区域之外与所述感测单元电性连接的计算与控制单元；
    所述感测单元包括设置于液晶显示面板的显示区域内的第一种金属导体、与第二种金属导体，所述第一种金属导体、与第二种金属导体的材料不同；所述第一种金属导体、与第二种金属导体为设置在液晶显示面板的显示区域内各金属结构层、及走线上的第一种金属线、与第二种金属线；或者所述第一种金属导体、与第二种金属导体分别为液晶显示面板的显示 区域内不同的金属结构层、及走线本身；
    所述计算与控制单元包括电性连接所述感测单元的运算放大器、与运算放大器电性连接的数模转换器、以及与数模转换器电性连接的微控制器。
  6. 如权利要求5所述的液晶显示面板，其中，所述第一种金属导体、第二种金属导体分别电性连接至运算放大器的同相输入端、反相输入端；运算放大器的输出端电性连接至数模转换器的输入端；数模转换器的输出端电性连接至微控制器。
  7. 如权利要求5所述的液晶显示面板，其中，所述计算与控制单元设在位于液晶显示面板的显示区域之外的印刷电路板上。
  8. 如权利要求6所述的液晶显示面板，其中，第一种金属导体、第二种金属导体与运算放大器之间的连接导线、运算放大器与数模转换器之间的连接导线、以及数模转换器与微控制器之间的连接导线均为铜线。
  9. 一种集成于液晶显示面板内的温度感测系统，包括：设于液晶显示面板的显示区域内的感测单元、及设于液晶显示面板的显示区域之外与所述感测单元电性连接的计算与控制单元；
    所述感测单元包括设置于液晶显示面板的显示区域内的第一种金属导体、与第二种金属导体，所述第一种金属导体、与第二种金属导体的材料不同；所述第一种金属导体、与第二种金属导体为设置在液晶显示面板的显示区域内各金属结构层、及走线上的第一种金属线、与第二种金属线；或者所述第一种金属导体、与第二种金属导体分别为液晶显示面板的显示区域内不同的金属结构层、及走线本身；
    所述计算与控制单元包括电性连接所述感测单元的运算放大器、与运算放大器电性连接的数模转换器、以及与数模转换器电性连接的微控制器；
    其中，所述第一种金属导体、第二种金属导体分别电性连接至运算放大器的同相输入端、反相输入端；运算放大器的输出端电性连接至数模转换器的输入端；数模转换器的输出端电性连接至微控制器。
    其中，所述计算与控制单元设在位于液晶显示面板的显示区域之外的印刷电路板上。
  10. 如权利要求9所述的集成于液晶显示面板内的温度感测系统，其中，第一种金属导体、第二种金属导体与运算放大器之间的连接导线、运算放大器与数模转换器之间的连接导线、以及数模转换器与微控制器之间的连接导线均为铜线。
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