WO2017049855A1 - 显示屏检测方法及设备 - Google Patents

显示屏检测方法及设备 Download PDF

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Publication number
WO2017049855A1
WO2017049855A1 PCT/CN2016/073993 CN2016073993W WO2017049855A1 WO 2017049855 A1 WO2017049855 A1 WO 2017049855A1 CN 2016073993 W CN2016073993 W CN 2016073993W WO 2017049855 A1 WO2017049855 A1 WO 2017049855A1
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Prior art keywords
primary color
display
component
display screen
input
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PCT/CN2016/073993
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English (en)
French (fr)
Inventor
陈宁
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京东方科技集团股份有限公司
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Priority to US15/325,417 priority Critical patent/US10408682B2/en
Publication of WO2017049855A1 publication Critical patent/WO2017049855A1/zh

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
    • G01J3/46—Measurement of colour; Colour measuring devices, e.g. colorimeters
    • G01J3/50—Measurement of colour; Colour measuring devices, e.g. colorimeters using electric radiation detectors
    • G01J3/506—Measurement of colour; Colour measuring devices, e.g. colorimeters using electric radiation detectors measuring the colour produced by screens, monitors, displays or CRTs
    • 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
    • G09G3/2003—Display of colours
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
    • G09G5/20—Function-generator circuits, e.g. circle generators line or curve smoothing circuits
    • 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
    • G09G2320/02—Improving the quality of display appearance
    • G09G2320/0242—Compensation of deficiencies in the appearance of colours
    • 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
    • G09G2330/10—Dealing with defective pixels
    • 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
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2360/00—Aspects of the architecture of display systems
    • G09G2360/14—Detecting light within display terminals, e.g. using a single or a plurality of photosensors
    • G09G2360/144—Detecting light within display terminals, e.g. using a single or a plurality of photosensors the light being ambient light
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2360/00—Aspects of the architecture of display systems
    • G09G2360/14—Detecting light within display terminals, e.g. using a single or a plurality of photosensors
    • G09G2360/145—Detecting light within display terminals, e.g. using a single or a plurality of photosensors the light originating from the display screen
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2360/00—Aspects of the architecture of display systems
    • G09G2360/16—Calculation or use of calculated indices related to luminance levels in display data

Definitions

  • the present invention relates to the field of display, and in particular, to a display screen detection method and device.
  • the specific detection method is as follows: firstly, the display screen displays a predetermined monochrome picture, such as a red picture, a green picture or a blue picture; and then the color of the display screen is detected by a color sensor to obtain red, green and blue (RGB) of the detected picture color. The color component of the three primary colors, thereby determining whether the display has a display failure.
  • a predetermined monochrome picture such as a red picture, a green picture or a blue picture
  • RGB red, green and blue
  • the technical problem to be solved by the present invention is how to reduce the influence of ambient light on the detection result in the process of detecting the color component of the display screen.
  • the technical solution of the present invention provides a display screen detection method, including:
  • the first display signal Detecting a component of a primary color of light at a display side of the display screen when the first display signal is input to the display screen, the first display signal being used to display a black monochrome picture;
  • the component of the primary color detected when the second display signal is input is The components of the primary colors detected when the first display signal is input are detected at the same position.
  • the component of the primary color detected when the second display signal is input and the component of the primary color detected when the first display signal is input are detected by the same color sensor.
  • the primary colors include the red primary colors, green primary colors, and blue primary colors.
  • the difference includes a value obtained by subtracting a component of a red primary color detected when a first display signal is input, a component of a red primary color detected when a second display signal is input, and inputting a second The component of the green primary color detected when the signal is displayed minus the value of the green primary color obtained by the component of the green primary color detected when the first display signal is input, and the component of the blue primary color detected when the second display signal is input is subtracted as the input The value of the blue primary color obtained by the component of the blue primary color detected when the signal is displayed.
  • the monochrome picture is a picture of one of a red primary color, a green primary color, and a blue primary color.
  • determining whether the display screen has a fault according to the difference comprises:
  • the method further comprises: performing an alarm when it is determined that the display screen has a fault.
  • the present invention also provides a display detection device, including:
  • a detecting module configured to detect a component of a primary color in the light at the display side of the display screen when the first display signal is input to the display screen, wherein the first display signal is used to display a black monochrome image, and Detecting a component of the primary color in light at a display side of the display screen when the display screen inputs a second display signal, the second display signal being used to display a monochrome image other than black;
  • a data processing module configured to calculate a difference between a component of the primary color detected when the second display signal is input and a component of the primary color detected when the first display signal is input, and determine, according to the difference Whether the display has a fault.
  • the detecting module includes:
  • a signal output unit configured to input the first display signal and the second display signal to a display screen
  • a detecting unit configured to detect a component of the primary color in the light at the display side of the display screen
  • control unit configured to: when the signal output unit inputs a first display letter to the display screen Controlling the detecting unit to detect a component of the primary color in the light at the display side of the display screen, and controlling the detecting unit to detect the detecting when the signal output unit inputs a second display signal to the display screen
  • the display shows the component of the primary color in the light at the side.
  • the primary colors include the red primary colors, green primary colors, and blue primary colors.
  • the difference includes a value obtained by subtracting a component of a red primary color detected when a first display signal is input, a component of a red primary color detected when a second display signal is input, and inputting a second The component of the green primary color detected when the signal is displayed minus the value of the green primary color obtained by the component of the green primary color detected when the first display signal is input, and the component of the blue primary color detected when the second display signal is input is subtracted as the input The value of the blue primary color obtained by the component of the blue primary color detected when the signal is displayed.
  • the monochrome picture is a picture of one of a red primary color, a green primary color, and a blue primary color.
  • the data processing module compares the value of the one primary color of the difference value with N times the values of other primary colors to determine whether the display screen has a fault, and N is a natural number greater than zero. .
  • an alarm module is further included for alerting when it is determined that the display screen is faulty.
  • the detecting unit is disposed at the same position to detect a component of the primary color detected when the second display signal is input and a component of the primary color detected when the first display signal is input.
  • the same detecting unit is arranged to detect a component of the primary color detected when the second display signal is input and a component of the primary color detected when the first display signal is input.
  • the screen detecting method detects the light intensity at the display side of the display screen when the first display signal is input to the display screen, and obtains the ambient light intensity of the environment where the display screen is located, and then measures when the monochrome screen is displayed. The intensity of the light is subtracted from the ambient light intensity, thereby reducing the influence of ambient light on the measurement results, so that the final detection result is closer to the actual situation of the display screen.
  • FIG. 1 is a flowchart of a method for detecting a display screen according to an embodiment of the present invention
  • FIG. 2 is a flowchart of another display screen detecting method according to an embodiment of the present invention.
  • FIG. 3 is a schematic diagram of a display screen detecting device according to an embodiment of the present invention.
  • FIG. 4 is a schematic diagram of a display screen detecting device for detecting a display screen according to an embodiment of the present invention.
  • the method for detecting a display screen includes:
  • S2 detecting a component of the primary color in light at a display side of the display screen when a second display signal is input to the display screen, the second display signal being used to display a monochrome image other than black;
  • S3 calculating a difference between a component of the primary color detected when the second display signal is input and a component of the primary color detected when the first display signal is input, and determining, according to the difference, whether the display screen is There is a fault.
  • the screen detecting method detects the light intensity at the display side of the display screen when the first display signal is input to the display screen, and obtains the ambient light intensity of the environment where the display screen is located, and then displays the monochrome image.
  • the measured light intensity minus the ambient light intensity reduces the effect of ambient light on the measurement results, making the final test result closer to the actual situation of the display.
  • the sequence of the step S1 and the step S2 is not specifically limited.
  • the step S1 may be performed first, or the step S2 may be performed first, or the step S2 may be performed first, and then the step is performed.
  • S1, step S1 and step S2 can also be performed simultaneously.
  • the component of the primary color detected in the above step S2 and the component of the primary color detected in step S1 may be Detected at the same location.
  • a color sensor can be used to detect the primary color component of the light at the display side of the display screen. Since different color sensors may have different measurement errors, by way of example, The component of the primary color detected in step S2 and the component of the primary color detected in step S1 can be detected by the same color sensor.
  • the above detection method it is possible to detect only components of one primary color (such as a red primary color, a green primary color, or a blue primary color) of light.
  • one primary color such as a red primary color, a green primary color, or a blue primary color
  • the red primary color component of the light at the display side of the display screen when the first display signal is input is measured by the step S1
  • the red primary color component of the light at the local portion is detected again by the step S2
  • the red primary color component obtained in the step S2 is further detected.
  • the red primary color component obtained in step S1 is subtracted to obtain a difference between the two, and the difference is compared with a preset value to determine whether the display screen has a fault.
  • the components of the three primary colors in the light may be detected such that the difference in step S3 includes the component of the red primary color detected when the second display signal is input minus the input
  • the preset values may be set in advance for the components of the three primary colors, and the difference between each of the primary colors obtained above is compared with the corresponding preset value. If the measurement results of the three primary colors are normal, the display is determined. No fault, otherwise, it is determined that there is a fault in the display.
  • a color sensor including red, green, and blue color filters may be used, and each color filter corresponds to one register, and a different filter is selected by reading a register.
  • a color filter since only light of the primary color is allowed to pass, and light of other primary colors is prevented from passing, the component of the primary color can be measured.
  • the blue filter when the blue filter is selected, only the blue component of the light to be collected can pass, and neither red nor green can pass, so that the light intensity of the blue light can be obtained.
  • the light intensity of the red primary color and the green primary light can be obtained.
  • the detection method in the present invention can be applied to a liquid crystal display or to an OLED display.
  • the monochrome picture displayed by the second display signal may be a monochrome picture of any color other than the black picture, and may be, for example, a yellow picture, a purple picture, or the like.
  • the monochrome screen described above may be a picture of one of a red primary color, a green primary color, and a blue primary color.
  • the value of the primary color corresponding to the monochrome picture is compared with the N times of the values of the other primary colors to determine whether the display screen has a fault, and N is a natural number greater than zero (for example, N can Is 1 or 2).
  • N is a natural number greater than zero (for example, N can Is 1 or 2).
  • the first display signal is first input to the display screen, and the components of the three primary colors (RGB) at this time are collected by the color sensor; then the second display signal for displaying the red primary color picture is input, and the color is again used.
  • the sensor collects the components of the three primary colors (RGB) at this time; and subtracts the components of the three primary colors (RGB) collected for the first time with the components of the three primary colors (RGB) acquired in the second time; Among the three values, whether the value of the red primary color is greater than twice the value of the other two colors, and if so, it is determined that the liquid crystal display has no fault, and if not, it is determined that the liquid crystal display shows a fault and an alarm is issued.
  • FIG. 3 is a schematic diagram of a display screen detecting device according to an embodiment of the present invention.
  • the display detection device includes:
  • the detecting module 100 is configured to detect a component of a primary color in the light on the display side of the display screen when the first display signal is input to the display screen, where the first display signal is used to display a first monochrome image such as black. And detecting a component of the primary color in the light at the display side of the display screen when the second display signal is input to the display screen, the second display signal being used to display a second monochrome picture other than black;
  • the data processing module 200 is configured to calculate a difference between a component of the primary color detected when the second display signal is input and a component of the primary color detected when the first display signal is input, and determine according to the difference Whether the display has a fault.
  • the screen detecting device detects the light intensity at the display side of the display screen when the first display signal is input to the display screen, and obtains the ambient light intensity of the environment where the display screen is located, and then displays the monochrome image.
  • the measured light intensity minus the ambient light intensity reduces the effect of ambient light on the measurement results, making the final test result closer to the actual situation of the display.
  • the detecting module 100 can include:
  • a signal output unit 110 configured to input the first display signal and the second display signal to a display screen
  • the detecting unit 120 is configured to detect a component of the primary color in the light at the display side of the display screen, for example, the detecting unit 120 may be a color sensor;
  • the control unit 130 is configured to control, when the signal output unit inputs the first display signal to the display screen, the detecting unit to detect a component of the primary color in the light at the display side of the display screen, and when the signal The output unit controls the detecting unit to detect a component of the primary color in the light at the display side of the display screen when the output unit inputs the second display signal to the display screen.
  • the detecting unit 120 is first placed on the display side of the display screen, and then under the control of the control unit 130, when the signal output unit 110 inputs the first display signal to the display screen, the detecting unit The 120 captures a component of a primary color of the light at the display side and sends it to the data processing module 200.
  • the detecting unit 120 collects the display display side again.
  • the component of the primary color in the light is sent to the data processing module 200.
  • the data processing module 200 subtracts the components of the three primary colors (RGB) collected for the second time.
  • the components of the three primary colors (RGB) collected for the first time are obtained, and the difference between the two is obtained, and the display screen is judged whether there is a fault according to the obtained difference.
  • the collected primary colors include a red primary color, a green primary color, and a blue primary color
  • the difference includes a red primary color detected when a first display signal is input minus a component of a red primary color detected when a second display signal is input.
  • the value of the red primary color obtained by the component, the value of the green primary color obtained by subtracting the component of the green primary color detected when the first display signal is input, the component of the green primary color detected when the second display signal is input, and the second input by The component of the blue primary color detected when the signal is displayed is subtracted from the value of the blue primary color obtained by the component of the blue primary color detected when the first display signal is input.
  • the monochrome picture is a picture of one of a red primary color, a green primary color, and a blue primary color
  • the data processing module sets the value of the primary color of the difference value to the value of the other primary colors.
  • the size comparison is performed to determine whether the display screen has a fault, and N is a natural number greater than zero.
  • the above display screen detecting device further includes an alarm module (not shown) for performing an alarm when it is determined that the display screen has a fault.

Abstract

一种显示屏检测方法及设备，能够在检测显示屏颜色分量的过程中减小环境光对检测结果的影响，使得最终的检测结果与显示屏的实际情况更加接近。该显示屏检测设备包括：检测模块（100），用于当向显示屏输入第一显示信号时检测所述显示屏显示侧处的光中一原色的分量，所述第一显示信号用于显示黑色的单色画面，以及当向所述显示屏输入第二显示信号时检测所述显示屏显示侧处的光中所述原色的分量，所述第二显示信号用于显示黑色之外的单色画面；数据处理模块（200），用于计算所述输入第二显示信号时检测的所述原色的分量与所述输入第一显示信号时检测的所述原色的分量的差值，并根据所述差值判断所述显示屏是否存在故障。

Description

显示屏检测方法及设备 技术领域
本发明涉及显示领域，尤其涉及一种显示屏检测方法及设备。
背景技术
在公交车、地铁、高铁、楼宇、电梯等公共场所常设有大量的显示屏，用于播放特定节目、广告、宣传片等。然而，由于这些显示设备使用环境复杂，从而故障率较高。为了能够及时地检测到其故障，目前通常利用颜色传感器判断显示屏的显示故障。具体检测方法为：首先让显示屏显示既定的单色画面，例如红色画面、绿色画面或蓝色画面等；再通过颜色传感器检测显示屏画面颜色，得到被检测画面颜色的红绿蓝(RGB)三原色的颜色分量，由此确定该显示屏是否存在显示故障。
然而，在上述判断故障的过程中，由于受环境光的影响，使得利用颜色传感器测量的结果与实际值存在差异，特别是在环境光较强的情况下，会进一步地加剧了两者的差异，从而容易造成误判。
发明内容
(一)要解决的技术问题
本发明要解决的技术问题是：如何在检测显示屏颜色分量的过程中减小环境光对检测结果的影响。
(二)技术方案
为解决上述技术问题，本发明的技术方案提供了一种显示屏检测方法，包括：
当向显示屏输入第一显示信号时检测所述显示屏显示侧处的光中一原色的分量，所述第一显示信号用于显示黑色的单色画面；
当向所述显示屏输入第二显示信号时检测所述显示屏显示侧处的光中所述原色的分量，所述第二显示信号用于显示黑色之外的单色画面；
计算所述输入第二显示信号时检测的所述原色的分量与所述输入第一显示信号时检测的所述原色的分量的差值，并根据所述差值判断所述显示屏是否存在故障。
示例性地，所述输入第二显示信号时检测的所述原色的分量与所述 输入第一显示信号时检测的所述原色的分量在同一位置处检测得到。
示例性地，所述输入第二显示信号时检测的所述原色的分量与所述输入第一显示信号时检测的所述原色的分量通过同一个颜色传感器检测得到。
示例性地，所述原色包括所述红原色、绿原色、蓝原色。
示例性地，所述差值包括由当输入第二显示信号时检测的红原色的分量减去当输入第一显示信号时检测的红原色的分量得到的红原色的值、由当输入第二显示信号时检测的绿原色的分量减去当输入第一显示信号时检测的绿原色的分量得到的绿原色的值、由当输入第二显示信号时检测的蓝原色的分量减去当输入第一显示信号时检测的蓝原色的分量得到的蓝原色的值。
示例性地，所述单色画面为红原色、绿原色、蓝原色中一种原色的画面。
示例性地，所述根据所述差值判断所述显示屏是否存在故障包括：
将所述差值中所述一种原色的值与其他原色的值的N倍进行大小比较，以判定所述显示屏是否存在故障，N为大于零的自然数。
示例性地，当判定所述显示屏存在故障之后所述方法还包括：进行报警。
为解决上述技术问题，本发明还提供了一种显示屏检测设备，包括：
检测模块，用于当向显示屏输入第一显示信号时检测所述显示屏显示侧处的光中一原色的分量，所述第一显示信号用于显示黑色的单色画面，以及当向所述显示屏输入第二显示信号时检测所述显示屏显示侧处的光中所述原色的分量，所述第二显示信号用于显示黑色之外的单色画面；
数据处理模块，用于计算所述输入第二显示信号时检测的所述原色的分量与所述输入第一显示信号时检测的所述原色的分量的差值，并根据所述差值判断所述显示屏是否存在故障。
示例性地，所述检测模块包括：
信号输出单元，用于向显示屏输入所述第一显示信号和所述第二显示信号；
检测单元，用于检测所述显示屏显示侧处的光中所述原色的分量；
控制单元，用于当所述信号输出单元向所述显示屏输入第一显示信 号时控制所述检测单元检测所述显示屏显示侧处的光中所述原色的分量，以及当所述信号输出单元向所述显示屏输入第二显示信号时控制所述检测单元检测所述显示屏显示侧处的光中所述原色的分量。
示例性地，所述原色包括所述红原色、绿原色、蓝原色。
示例性地，所述差值包括由当输入第二显示信号时检测的红原色的分量减去当输入第一显示信号时检测的红原色的分量得到的红原色的值、由当输入第二显示信号时检测的绿原色的分量减去当输入第一显示信号时检测的绿原色的分量得到的绿原色的值、由当输入第二显示信号时检测的蓝原色的分量减去当输入第一显示信号时检测的蓝原色的分量得到的蓝原色的值。
示例性地，所述单色画面为红原色、绿原色、蓝原色中一种原色的画面。
示例性地，所述数据处理模块将所述差值中所述一种原色的值与其他原色的值的N倍进行大小比较，以判定所述显示屏是否存在故障，N为大于零的自然数。
示例性地，还包括报警模块，用于当判定所述显示屏存在故障之后进行报警。
示例性地，所述检测单元布置在同一位置处以检测得到所述输入第二显示信号时检测的所述原色的分量与所述输入第一显示信号时检测的所述原色的分量。
示例性地，同一个检测单元布置成检测得到所述输入第二显示信号时检测的所述原色的分量与所述输入第一显示信号时检测的所述原色的分量。
(三)有益效果
本发明提供的屏幕检测方法，通过当向显示屏输入第一显示信号时对显示屏显示侧处的光强进行检测，得到显示屏所处环境的环境光强，再将显示单色画面时测量的光强减去该环境光强，从而降低了环境光对测量结果的影响，使得最终的检测结果与显示屏的实际情况更加接近。
附图说明
图1是本发明实施方式提供的一种显示屏检测方法的流程图；
图2是本发明实施方式提供的另一种显示屏检测方法的流程图；
图3是本发明实施方式提供的一种显示屏检测设备的示意图；
图4是本发明实施方式提供的显示屏检测设备检测显示屏的示意图。
具体实施方式
下面结合附图和实施例，对本发明的具体实施方式作进一步详细描述。以下实施例用于说明本发明，但不用来限制本发明的范围。
附图标记说明：100检测模块；110信号输出单元；120检测单元；130控制单元；200数据处理模块。
图1是本发明实施方式提供的一种显示屏检测方法的流程图，该显示屏检测方法包括：
S1：当向显示屏输入第一显示信号时检测所述显示屏显示侧处的光中一原色的分量，所述第一显示信号用于显示黑色的单色画面；
S2：当向所述显示屏输入第二显示信号时检测所述显示屏显示侧处的光中所述原色的分量，所述第二显示信号用于显示黑色之外的单色画面；
S3：计算所述输入第二显示信号时检测的所述原色的分量与所述输入第一显示信号时检测的所述原色的分量的差值，并根据所述差值判断所述显示屏是否存在故障。
本发明实施方式提供的屏幕检测方法，通过当向显示屏输入第一显示信号时对显示屏显示侧处的光强进行检测，得到显示屏所处环境的环境光强，再将显示单色画面时测量的光强减去该环境光强，从而降低了环境光对测量结果的影响，使得最终的检测结果与显示屏的实际情况更加接近。
其中，在上述的检测方法中，不对步骤S1和步骤S2的先后顺序作具体限定，例如，在进行检测时，可以先执行步骤S1，再执行步骤S2，也可以先执行步骤S2，后执行步骤S1，也可以同时执行步骤S1和步骤S2。
示例性地，由于显示屏显示侧处各个位置的环境光强可能不同，为使所测量的结果更加接近实际情况，上述步骤S2中检测的原色的分量与步骤S1中检测的原色的分量可以在同一位置处检测得到。
本发明中，可以采用颜色传感器检测显示屏的显示侧处光的原色分量。由于不同的颜色传感器可能存在不同的测量误差，示例性地，上 述步骤S2中检测的原色的分量与步骤S1中检测的原色的分量可以通过同一个颜色传感器检测得到。
其中，在上述的检测方法中，可以只检测光中一种原色(如红原色、绿原色或蓝原色)的分量。例如，通过步骤S1测量得到输入第一显示信号时显示屏显示侧处的光中红原色分量，通过步骤S2再次对该处的光中红原色分量进行检测，再将步骤S2得到的红原色分量减去步骤S1得到的红原色分量，得到两者之间的差值，通过将该差值与预设值进行比较，从而判断该显示屏是否存在故障。
示例性地，在上述的检测方法中，可以对光中三种原色的分量均进行检测，使得步骤S3中差值包括由当输入第二显示信号时检测的红原色的分量减去当输入第一显示信号时检测的红原色的分量得到的红原色的值、由当输入第二显示信号时检测的绿原色的分量减去当输入第一显示信号时检测的绿原色的分量得到的绿原色的值、由当输入第二显示信号时检测的蓝原色的分量减去当输入第一显示信号时检测的蓝原色的分量得到的蓝原色的值，在根据该差值判断显示屏状况时，可以预先对三种原色的分量均设置预设值，并将上述得到的每种原色的差值与对应的预设值进行比较，若三种原色的测量结果均为正常，则确定该显示屏无故障，否则，确定该显示屏存在故障。
例如，可以采用包含红、绿、蓝三种颜色滤光器的颜色传感器，且每一种颜色滤光器对应一个寄存器，通过读取寄存器来选择不同的滤光器。当选定一种颜色滤光器时，由于其只允许该种原色的光通过，而阻止其它原色的光通过，从而能够测量该种原色的分量。比如，当选择蓝色滤光器时，待采集光中只有蓝色成分可以通过，红色和绿色都不能通过，这样就可以得到蓝色光的光强。同理，选择其它滤光器，就可以得到红原色和绿原色光的光强。
本发明中的检测方法可以适用于液晶显示屏，也可以适用于OLED显示屏。在检测的过程中，第二显示信号所显示的单色画面可以为除黑色画面外任何颜色的单色画面，例如可以为黄色画面、紫色画面等。示例性地，上述的单色画面可以为红原色、绿原色、蓝原色中一种原色的画面。当显示屏输入该种原色画面所对应的第二显示信号时，通过颜色传感器分别采集红原色的分量、绿原色的分量和蓝原色的分量，再将其分别减去输入第一显示信号时所采集的对应原色的分量，而后 在得到的三个值中，将该单色画面对应的原色的值与其他原色的值的N倍进行大小比较，以判定该显示屏是否存在故障，N为大于零的自然数(例如，N可以为1或2)。当该种原色的分量大于其他两种原色的差值的N倍时，判定显示屏正常，否则，判定显示屏存在故障。例如，以检测红原色的画面为例。如图2所示，首先向显示屏输入第一显示信号，并采用颜色传感器采集此时的三种原色(RGB)的分量；而后输入用于显示红原色画面的第二显示信号，再次用颜色传感器采集此时的三种原色(RGB)的分量；再用第二次采集的三种原色(RGB)的分量分别减去第一次采集的三种原色(RGB)的分量；最后判断所得到的三个值中，红原色的值是否大于其他两种颜色的值的2倍，如果是，判定液晶屏显示无故障，如果否，判定液晶屏显示存在故障，并进行报警。
图3是本发明实施方式提供的一种显示屏检测设备的示意图。该显示屏检测设备包括：
检测模块100，用于当向显示屏输入第一显示信号时检测所述显示屏显示侧处的光中一原色的分量，所述第一显示信号用于显示例如黑色的第一单色画面，以及当向所述显示屏输入第二显示信号时检测所述显示屏显示侧处的光中所述原色的分量，所述第二显示信号用于显示例如黑色之外的第二单色画面；
数据处理模块200，用于计算所述输入第二显示信号时检测的所述原色的分量与所述输入第一显示信号时检测的所述原色的分量的差值，并根据所述差值判断所述显示屏是否存在故障。
本发明实施方式提供的屏幕检测设备，通过当向显示屏输入第一显示信号时对显示屏显示侧处的光强进行检测，得到显示屏所处环境的环境光强，再将显示单色画面时测量的光强减去该环境光强，从而降低了环境光对测量结果的影响，使得最终的检测结果与显示屏的实际情况更加接近。
其中，所述检测模块100可以包括：
信号输出单元110，用于向显示屏输入所述第一显示信号和所述第二显示信号；
检测单元120，用于检测所述显示屏显示侧处的光中所述原色的分量，例如，该检测单元120可以为颜色传感器；
控制单元130，用于当所述信号输出单元向所述显示屏输入第一显示信号时控制所述检测单元检测所述显示屏显示侧处的光中所述原色的分量，以及当所述信号输出单元向所述显示屏输入第二显示信号时控制所述检测单元检测所述显示屏显示侧处的光中所述原色的分量。
如图4所示，在检测过程中，首先将该检测单元120放置在显示屏的显示侧，而后在控制单元130的控制下，当信号输出单元110向显示屏输入第一显示信号时检测单元120采集显示屏显示侧处的光中一原色的分量，并将其发送至数据处理模块200，当信号输出单元110向显示屏输入第二显示信号时检测单元120再次采集显示屏显示侧处的光中所述原色的分量，并将其发送至数据处理模块200，数据处理模块200在接收到上述两次检测得到的数据后，将第二次采集的三种原色(RGB)的分量分别减去第一次采集的三种原色(RGB)的分量，得到两者的差值，并根据得到的差值判断显示屏是否存在故障。
示例性地，上述采集的原色包括红原色、绿原色、蓝原色，所述差值包括由当输入第二显示信号时检测的红原色的分量减去当输入第一显示信号时检测的红原色的分量得到的红原色的值、由当输入第二显示信号时检测的绿原色的分量减去当输入第一显示信号时检测的绿原色的分量得到的绿原色的值、由当输入第二显示信号时检测的蓝原色的分量减去当输入第一显示信号时检测的蓝原色的分量得到的蓝原色的值。
示例性地，所述单色画面为红原色、绿原色、蓝原色中一种原色的画面，所述数据处理模块将所述差值中所述一种原色的值与其他原色的值的N倍进行大小比较，以判定所述显示屏是否存在故障，N为大于零的自然数。
示例性地，上述显示屏检测设备还包括报警模块(未图示)，用于当判定所述显示屏存在故障之后进行报警。
以上实施方式仅用于说明本发明，而并非对本发明的限制，有关技术领域的普通技术人员，在不脱离本发明的精神和范围的情况下，还可以做出各种变化和变型，因此所有等同的技术方案也属于本发明的范畴，本发明的保护范围应由权利要求限定。

Claims (17)

  1. 一种显示屏检测设备，其特征在于，包括：
    检测模块，用于当向显示屏输入第一显示信号时检测所述显示屏显示侧处的光中一原色的分量，所述第一显示信号用于显示黑色的单色画面，以及当向所述显示屏输入第二显示信号时检测所述显示屏显示侧处的光中所述原色的分量，所述第二显示信号用于显示黑色之外的单色画面；
    数据处理模块，用于计算所述输入第二显示信号时检测的所述原色的分量与所述输入第一显示信号时检测的所述原色的分量的差值，并根据所述差值判断所述显示屏是否存在故障。
  2. 根据权利要求1所述的显示屏检测设备，其特征在于，所述检测模块包括：
    信号输出单元，用于向显示屏输入所述第一显示信号和所述第二显示信号；
    检测单元，用于检测所述显示屏显示侧处的光中所述原色的分量；
    控制单元，用于当所述信号输出单元向所述显示屏输入第一显示信号时控制所述检测单元检测所述显示屏显示侧处的光中所述原色的分量，以及当所述信号输出单元向所述显示屏输入第二显示信号时控制所述检测单元检测所述显示屏显示侧处的光中所述原色的分量。
  3. 根据权利要求1所述的显示屏检测设备，其特征在于，所述原色包括所述红原色、绿原色、蓝原色。
  4. 根据权利要求3所述的显示屏检测设备，其特征在于，所述差值包括由当输入第二显示信号时检测的红原色的分量减去当输入第一显示信号时检测的红原色的分量得到的红原色的值、由当输入第二显示信号时检测的绿原色的分量减去当输入第一显示信号时检测的绿原色的分量得到的绿原色的值、由当输入第二显示信号时检测的蓝原色的分量减去当输入第一显示信号时检测的蓝原色的分量得到的蓝原色的值。
  5. 根据权利要求4所述的显示屏检测设备，其特征在于，所述单色画面为红原色、绿原色、蓝原色中一种原色的画面。
  6. 根据权利要求5所述的显示屏检测设备，其特征在于，所述数 据处理模块将所述差值中所述一种原色的值与其他原色的值的N倍进行大小比较，以判定所述显示屏是否存在故障，N为大于零的自然数。
  7. 根据权利要求1所述的显示屏检测设备，其特征在于，还包括报警模块，用于当判定所述显示屏存在故障之后进行报警。
  8. 根据权利要求2所述的显示屏检测设备，其特征在于，所述检测单元布置在同一位置处以检测得到所述输入第二显示信号时检测的所述原色的分量与所述输入第一显示信号时检测的所述原色的分量。
  9. 根据权利要求2所述的显示屏检测设备，其特征在于，同一个检测单元布置成检测得到所述输入第二显示信号时检测的所述原色的分量与所述输入第一显示信号时检测的所述原色的分量。
  10. 一种显示屏检测方法，其特征在于，包括：
    当向显示屏输入第一显示信号时检测所述显示屏显示侧处的光中一原色的分量，所述第一显示信号用于显示黑色的单色画面；
    当向所述显示屏输入第二显示信号时检测所述显示屏显示侧处的光中所述原色的分量，所述第二显示信号用于显示黑色之外的单色画面；
    计算所述输入第二显示信号时检测的所述原色的分量与所述输入第一显示信号时检测的所述原色的分量的差值，并根据所述差值判断所述显示屏是否存在故障。
  11. 根据权利要求10所述的显示屏检测方法，其特征在于，所述输入第二显示信号时检测的所述原色的分量与所述输入第一显示信号时检测的所述原色的分量在同一位置处检测得到。
  12. 根据权利要求10所述的显示屏检测方法，其特征在于，所述输入第二显示信号时检测的所述原色的分量与所述输入第一显示信号时检测的所述原色的分量通过同一个颜色传感器检测得到。
  13. 根据权利要求10所述的显示屏检测方法，其特征在于，所述原色包括所述红原色、绿原色、蓝原色。
  14. 根据权利要求13所述的显示屏检测方法，其特征在于，所述差值包括由当输入第二显示信号时检测的红原色的分量减去当输入第一显示信号时检测的红原色的分量得到的红原色的值、由当输入第二显示信号时检测的绿原色的分量减去当输入第一显示信号时检测的绿原色的分量得到的绿原色的值、由当输入第二显示信号时检测的蓝原 色的分量减去当输入第一显示信号时检测的蓝原色的分量得到的蓝原色的值。
  15. 根据权利要求14所述的显示屏检测方法，其特征在于，所述单色画面为红原色、绿原色、蓝原色中一种原色的画面。
  16. 根据权利要求15所述的显示屏检测方法，其特征在于，所述根据所述差值判断所述显示屏是否存在故障包括：
    将所述差值中所述一种原色的值与其他原色的值的N倍进行大小比较，以判定所述显示屏是否存在故障，N为大于零的自然数。
  17. 根据权利要求10所述的显示屏检测方法，其特征在于，当判定所述显示屏存在故障之后所述方法还包括：进行报警。
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