WO2016183987A1 - 一种测试透明显示基板的透明效果的设备及方法 - Google Patents

一种测试透明显示基板的透明效果的设备及方法 Download PDF

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Publication number
WO2016183987A1
WO2016183987A1 PCT/CN2015/089914 CN2015089914W WO2016183987A1 WO 2016183987 A1 WO2016183987 A1 WO 2016183987A1 CN 2015089914 W CN2015089914 W CN 2015089914W WO 2016183987 A1 WO2016183987 A1 WO 2016183987A1
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Prior art keywords
brightness
display substrate
transparent display
difference
reference object
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PCT/CN2015/089914
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English (en)
French (fr)
Inventor
马新利
来航曼
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京东方科技集团股份有限公司
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Priority to US14/913,560 priority Critical patent/US9818320B2/en
Publication of WO2016183987A1 publication Critical patent/WO2016183987A1/zh

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    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/006—Electronic inspection or testing of displays and display drivers, e.g. of LED or LCD displays
    • 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
    • G01J1/00—Photometry, e.g. photographic exposure meter
    • G01J1/42—Photometry, e.g. photographic exposure meter using electric radiation detectors
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/88—Investigating the presence of flaws or contamination
    • G01N21/95—Investigating the presence of flaws or contamination characterised by the material or shape of the object to be examined
    • G01N21/958—Inspecting transparent materials or objects, e.g. windscreens
    • 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
    • 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
    • G09G2320/06—Adjustment of display parameters
    • G09G2320/0626—Adjustment of display parameters for control of overall brightness
    • G09G2320/0646—Modulation of illumination source brightness and image signal correlated to each other
    • 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
    • G09G2320/06—Adjustment of display parameters
    • G09G2320/0666—Adjustment of display parameters for control of colour parameters, e.g. colour temperature
    • 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

Definitions

  • Embodiments of the present invention relate to an apparatus and method for testing the transparency of a transparent display substrate.
  • Transparent display substrate When displaying an image, the user can see the object placed behind through the transparent display substrate. The better the transparency effect, the clearer the object behind the transparent display substrate seen by the user through the transparent display substrate. Therefore, testing of the transparency effect of the transparent display substrate becomes particularly important.
  • the transparent display substrate is generally tested by the following two methods using a transparent effect test device (see FIG. 1).
  • a test board including a black and white pattern is placed behind the transparent display substrate; and the brightness L B of the black area and the brightness of the white area are respectively detected by the display color analyzer CA210 through the transparent display substrate.
  • L W according to the brightness of the black area L B and the brightness of the white area L W and the formula Obtaining a brightness contrast parameter T of the black area and the white area in the test board; determining a transparency effect of the transparent display substrate according to the brightness contrast parameter T, the larger the brightness contrast parameter T, the better the transparent effect of the transparent display substrate .
  • the brightness of the black area and the brightness of the white area in the test board are directly detected to obtain an initial contrast parameter T 0 ; and then the brightness of the black area and the contrast of the brightness of the white area are obtained through the transparent display substrate.
  • Parameter T according to the contrast parameter T and the initial ratio parameter T 0 and the formula Obtaining a transparent effect parameter CR of the transparent display substrate; determining a transparent effect of the transparent display substrate according to the transparent effect parameter CR, wherein the transparent effect parameter CR is larger, the transparent effect of the transparent display substrate is better.
  • One of the technical problems to be solved by the present invention is a problem in which the accuracy of the transparency of the transparent display substrate due to interference from ambient light is poor in the prior art.
  • An embodiment of the present invention provides an apparatus for testing a transparent effect of a transparent display substrate, comprising: a transparency recognition module, an optical measurement device, and a reference object including two regions having different colors; the optical measurement device can directly measure the reference Brightness of two regions of different colors of the object to obtain a first brightness difference, and brightness of two regions different in color of the reference object measured through the transparent display substrate to obtain a second brightness difference; the transparency identification The module calculates the identification ID of the transparent display substrate according to the first brightness difference and the second brightness difference, and the calculation formula is:
  • ⁇ L 1 is a first luminance difference and ⁇ L 2 is a second luminance difference.
  • the device for testing the transparent effect of the transparent display substrate includes a transparency recognition module, an optical measuring device and a reference object; when the transparency of the transparent display substrate is tested by the device, the optical measuring device and the reference object can be directly obtained by the optical measuring device and the reference object First brightness difference, and Measuring, by the transparent display substrate, brightness of two regions different in color of the reference object to obtain a second brightness difference; calculating the reference object according to the first brightness difference and the second brightness difference;
  • the transparency effect of the display substrate has a direct influence on whether the transparent display substrate can clearly see the object behind the transparent display substrate, and the object recognition degree is an important factor for determining whether the object behind the transparent display substrate can be clearly seen.
  • the transparency effect of the transparent display substrate can be judged by measuring the influence of the transparent display substrate on the recognition of the reference object, thereby achieving the purpose of testing the transparent effect of the transparent display substrate, facilitating the evaluation of the transparent display substrate; and, due to the environment The influence of light on different parts of the reference object is the same. Therefore, obtaining the recognition degree by the difference of the brightness can eliminate the influence of the ambient light on the test and improve the test precision of the transparent display substrate.
  • the distance between the optical measuring device and the reference object is fixed.
  • the distance between the optical measuring device and the reference object affects the visibility of the reference object measured by the optical measuring device
  • the distance between the optical measuring device and the reference object can be made in order to more accurately test the transparency of the transparent display substrate.
  • the transparent display substrate can be placed between the optical measuring device and the reference object and the visibility of the reference object can be measured through the transparent display substrate, thereby avoiding the optical measuring device
  • the influence of the distance between the reference object and the reference object on the measurement result is favorable for accurately determining the influence of the transparent display substrate on the visibility of the reference object, thereby more accurately testing the transparency effect of the transparent display substrate.
  • the optical measuring device is a luminance meter or an image sensor.
  • the result measured by the brightness meter or the image sensor can more fully reflect the recognition degree of the reference object, thereby facilitating more accurate judgment of the transparent display substrate.
  • the transparency effect Since the different areas on the reference object can be measured by the brightness meter or the image sensor, the result measured by the brightness meter or the image sensor can more fully reflect the recognition degree of the reference object, thereby facilitating more accurate judgment of the transparent display substrate. The transparency effect.
  • the reference object is a standard color swatch comprising black and white areas spaced apart.
  • the standard swatch structure is simple, and the black and white areas of the standard swatch are standard colors, using the standard swatch as a reference is beneficial to improve the accuracy of the identification test.
  • a difference between a brightness of the white area and a brightness of a black area is a first brightness difference
  • the difference between the brightness of the white area and the brightness of the black area is a second brightness difference.
  • the device further includes a light source, and the distance and an angle of the light source from the reference object are both fixed.
  • the light source can provide stable and continuous illumination for the reference object during the test, which is beneficial to the test of the transparent effect; and, because the distance and the angle between the light source and the reference object affect the illumination of the reference surface, thereby affecting the use of optics
  • the measurement device measures the reference object's degree of identification. Therefore, the distance and angle of the light source and the reference object can be fixed, and the influence of the distance and angle of the light source from the reference object on the measurement result can be avoided, which is favorable for accurately determining the transparent display substrate to the reference. The influence of the recognition of the object, thereby more accurately testing the transparency of the transparent display substrate.
  • the light source and the reference object are located on the same side of the transparent display substrate.
  • the light source and the reference object are disposed on the same side of the transparent display substrate, thereby improving the illumination effect of the light source on the reference object, which is advantageous for performing The transparency effect is tested to improve the accuracy of the transparency test.
  • Embodiments of the present invention provide a method for testing a transparent effect of a transparent display substrate, Methods include:
  • the transparency identification module calculates the identification ID of the transparent display substrate according to the first brightness difference and the second brightness difference, and the calculation formula is:
  • Determining a transparency effect of the transparent display substrate according to the identification ID Determining a transparency effect of the transparent display substrate according to the identification ID. Specifically, the higher the visibility ID, the better the transparency effect.
  • the first brightness difference is directly obtained by the optical measuring device and the reference object, and the color of the reference object is measured through the transparent display substrate.
  • the brightness of the two regions is obtained to obtain a second brightness difference; the reference object recognition degree can be calculated according to the first brightness difference and the second brightness difference; whether the transparency effect of the transparent display substrate can pass through the transparent display substrate.
  • the effect of determining the transparency effect of the transparent display substrate is to achieve the purpose of testing the transparent effect of the transparent display substrate, and is advantageous for evaluating the transparent display substrate; and, since the influence of ambient light on different parts of the reference object is the same, The difference in brightness can be obtained by eliminating the recognition The effect of ambient light on the test improves the accuracy of the test on the transparent display substrate.
  • the reference object is a standard color swatch comprising black and white areas spaced apart.
  • the standard swatch structure is simple, and the black and white areas of the standard swatch are standard colors, using the standard swatch as a reference is beneficial to improve the accuracy of the identification test.
  • a difference between a brightness of the white area and a brightness of a black area is a first brightness difference
  • the difference between the brightness of the white area and the brightness of the black area is a second brightness difference.
  • directly measuring the reference object using an optical measuring device to obtain the first brightness difference ⁇ L 1 includes:
  • a difference between the brightness of the white area and the brightness of the black area is calculated as the first brightness difference ⁇ L 1 .
  • the brightness of different parts of the black area may be different, and the brightness of different parts of the white area may also be different. Therefore, the average value of each brightness value of the trough part is taken as the brightness of the black area, and the peak is used. The average value of each of the luminance values is used as the luminance of the white region, and the test accuracy of the transparency effect can be improved.
  • calculating the brightness of the black area and the brightness of the white area include:
  • the measured brightness is obtained by taking 110% of the minimum value among the luminance values of the valley portion of the luminance curve as the minimum luminance value and 90% of the maximum value among the luminance values of the peak portion of the luminance curve as the maximum luminance value.
  • a certain modification of the value can effectively avoid the appearance of extreme values, thereby further improving the accuracy of the test.
  • measuring the brightness of the two regions of different colors of the reference object through the transparent display substrate by using the optical measuring device to obtain the second brightness difference ⁇ L 2 includes:
  • a difference between the brightness of the white area and the brightness of the black area is calculated as the second brightness difference ⁇ L 2 .
  • calculating the brightness of the black area and the brightness of the white area include:
  • FIG. 1 is a schematic structural view of an apparatus for testing transparency of a transparent display substrate in the prior art
  • FIG. 2 is a schematic structural diagram of an apparatus for testing transparency of a transparent display substrate according to Embodiment 1 of the present invention
  • FIG. 3 is a schematic structural diagram of an apparatus for testing transparency of a transparent display substrate according to Embodiment 2 of the present invention.
  • FIG. 4 is a flowchart of a method for testing a transparent effect of a transparent display substrate according to Embodiment 3 of the present invention.
  • FIG. 5 is a schematic diagram of a brightness curve drawn according to measured brightness values of different parts of a reference object according to the third embodiment of the present invention.
  • FIG. 6 is a flowchart of a method for testing a transparent effect of a transparent display substrate according to Embodiment 4 of the present invention.
  • Embodiments of the present invention provide an apparatus and method for testing a transparent effect of a transparent display substrate.
  • Two apparatus will be specifically described below to specifically describe an apparatus and method for testing the transparency of a transparent display substrate of the present invention.
  • Embodiment 1 of the present invention provides an apparatus for testing a transparent effect of a transparent display substrate.
  • the apparatus includes a transparency recognition module 21, an optical measurement device 22, and a reference 23 including two regions of different colors.
  • the optical measuring device 22 is capable of directly measuring the brightness of two regions of different colors of the reference object 23 to obtain a first brightness difference, and measuring two different colors of the reference object 23 through the transparent display substrate 25. The brightness of the area to obtain the second brightness difference.
  • the transparency recognition module calculates the identification ID of the transparent display substrate according to the first brightness difference and the second brightness difference, and the calculation formula is:
  • ⁇ L 1 is a first luminance difference and ⁇ L 2 is a second luminance difference.
  • the first brightness difference is directly obtained by the optical measuring device and the reference object, and the first brightness difference is obtained.
  • the transparency effect of the display substrate has a direct influence on whether the transparent display substrate can clearly see the object behind the transparent display substrate, and the object recognition degree is an important factor for determining whether the object behind the transparent display substrate can be clearly seen. Therefore, the transparency can be judged by measuring the influence of the transparent display substrate on the reference object.
  • Displaying the transparency effect of the substrate, thereby achieving the purpose of testing the transparent effect of the transparent display substrate, is advantageous for evaluating the transparent display substrate; and, because the influence of ambient light on different parts of the reference object is the same, the way of passing the brightness difference Obtaining the identification can eliminate the influence of ambient light on the test and improve the test accuracy of the transparent display substrate.
  • the distance between the optical measuring device 22 and the reference object 23 is fixed.
  • the distance between the optical measuring device and the reference object affects the visibility of the reference object measured by the optical measuring device
  • the distance between the optical measuring device and the reference object can be made in order to more accurately test the transparency of the transparent display substrate.
  • the transparent display substrate can be placed between the optical measuring device and the reference object and the visibility of the reference object can be measured through the transparent display substrate, thereby avoiding the optical measuring device
  • the influence of the distance between the reference object and the reference object on the measurement result is favorable for accurately determining the influence of the transparent display substrate on the visibility of the reference object, thereby more accurately testing the transparency effect of the transparent display substrate.
  • the optical measuring device 22 is a luminance meter or an image sensor.
  • the optical measuring device 22 can be a luminance meter or an image sensor, and can also be other brightness measuring instruments capable of fully reflecting the visibility of the reference object.
  • the reference object 23 is a standard color plate comprising spaced black areas and white areas.
  • the standard swatch structure is simple, and the black and white areas of the standard swatch are standard. Color, so the use of standard swatches as a reference is conducive to improve the accuracy of the recognition test.
  • the reference material may be a liquid crystal display device, but when a liquid crystal display device is used as a reference material, it is necessary to modulate the liquid crystal display device into a black screen and a white screen. Since the liquid crystal display device is modulated into a black screen and a white screen, it is necessary to perform special adjustment, the process is cumbersome, and the black screen and the white screen are difficult to achieve standard black and white due to the influence of the display effect of the liquid crystal display device itself.
  • the reference object may also be another display device such as an organic light emitting diode OLED display device, a plasma PDP display device, or a cathode ray CRT display device.
  • the difference between the brightness of the white area and the brightness of the black area is a brightness difference ⁇ L 1 ; when the optical measuring device 22 measures the brightness of the reference object 23 through the transparent display substrate 25, the difference between the brightness of the white area and the brightness of the black area is the second The luminance difference ⁇ L 2 .
  • the brightness of different portions of the black region B and the brightness of different portions of the white region W are respectively measured, and a brightness curve is drawn according to the measured brightness values;
  • the brightness of the black area is an average value of the brightness values of the valley portion of the brightness curve, and the brightness of the white area is an average value of the brightness values of the peak portion of the brightness curve. Due to various external factors such as the level of manufacturing process, measurement error and environmental factors, the brightness of different parts of the measured black area may be different, and the brightness of different parts of the measured white area may also be different.
  • the average value of each luminance value of the trough portion is taken as the luminance of the black portion, and the average value of the luminance values of the peak portion is taken as the luminance of the white portion, which can improve the test accuracy of the transparency effect.
  • 110% of the minimum values of the luminance values of the valley portion of the luminance curve may be taken as the minimum luminance value and 90% of the maximum value among the luminance values of the peak portion of the luminance curve may be used as the maximum luminance value.
  • This method can modify the measured brightness value to avoid the appearance of extreme values, thereby further improving the accuracy of the test.
  • the illumination of the standard swatch is fixed.
  • the illumination of the standard color plate is fixed, it is convenient to compare and judge the transparency effects of different transparent display substrates.
  • Embodiment 2 of the present invention further provides an apparatus for testing a transparent effect of a transparent display substrate.
  • the device for testing the transparent effect of the transparent display substrate provided by the second embodiment of the present invention further includes a light source 24, as compared with the device for testing the transparent effect of the transparent display substrate provided by the first embodiment of the present invention.
  • the light source 24 is a standard light source.
  • the light source can also be a normal light source.
  • standard light sources usually conform to international standards, providing more stable and easily adjustable illumination.
  • source 24 typically selects a standard source, such as a D65 standard source.
  • the distance and angle of the light source 24 from the reference object 23 are both fixed. Since the distance and the angle between the light source 24 and the reference object 23 affect the illuminance of the surface of the reference object, thereby affecting the measurement of the reference object using the optical measuring device, the distance and the angle between the light source and the reference object can be fixed, thereby avoiding The influence of the distance and angle of the light source and the reference object on the measurement result is favorable for accurately determining the influence of the transparent display substrate on the visibility of the reference object, thereby more accurately testing the transparency effect of the transparent display substrate.
  • Embodiment 3 of the present invention provides a method for testing the transparency effect of a transparent display substrate. Referring to Figure 4, the method includes:
  • Step 41 selecting a reference object including two regions having different colors
  • Step 42 directly measuring brightness of two regions of different colors of the reference object by using an optical measuring device to obtain a first brightness difference ⁇ L 1 ;
  • Step 43 placing the transparent display substrate between the optical measuring device and the reference object, and measuring brightness of two regions of different colors of the reference object through the transparent display substrate by using an optical measuring device. To obtain a second brightness difference ⁇ L 2 ;
  • Step 44 The transparency recognition module calculates the identification ID of the transparent display substrate according to the first brightness difference and the second brightness difference, and the calculation formula is:
  • Step 45 Determine a transparency effect of the transparent display substrate according to the identification ID. Specifically, the higher the visibility ID, the better the transparency effect.
  • the first brightness difference is directly obtained by the optical measuring device and the reference object, and the color of the reference object is measured through the transparent display substrate.
  • the substrate clearly sees the object behind the transparent display substrate has a direct influence, and the recognition degree of the object is an important factor to measure whether the object behind the transparent display substrate can be clearly seen, so the degree of recognition of the reference object by the transparent display substrate can be measured.
  • the effect of determining the transparency of the transparent display substrate to achieve the purpose of testing the transparency of the transparent display substrate is advantageous for evaluating the transparent display substrate; and since the influence of ambient light on different parts of the reference object is the same, Obtaining the recognition degree by the difference of brightness can eliminate the influence of ambient light on the test and improve the penetration Display precision substrate.
  • the reference object 23 is a standard color plate comprising spaced black areas and white areas.
  • the standard swatch structure is simple, and the black and white areas of the standard swatch are standard colors, using the standard swatch as a reference is beneficial to improve the accuracy of the recognition test.
  • the reference object may also be other displays such as a liquid crystal display, an organic light emitting diode OLED display, a plasma PDP display, or a cathode ray CRT display.
  • a display device such as a liquid crystal display
  • the difference between the brightness of the white area and the brightness of the black area is the first brightness The difference ⁇ L 1 ; when the optical measuring device measures the brightness of the reference object through the transparent display substrate, the difference between the brightness of the white area and the brightness of the black area is the second brightness difference ⁇ L 2 .
  • directly measuring the reference object using an optical measuring device to obtain the first brightness difference ⁇ L 1 includes:
  • the brightness of different parts of the black area may be different, and the brightness of different parts of the white area may also be different. Therefore, the average value of each brightness value of the trough part is taken as the brightness of the black area, and the peak is used. The average value of each of the luminance values is used as the luminance of the white region, and the test accuracy of the transparency effect can be improved.
  • calculating the brightness of the black area and the brightness of the white area include:
  • the measured brightness is obtained by taking 110% of the minimum value among the luminance values of the valley portion of the luminance curve as the minimum luminance value and 90% of the maximum value among the luminance values of the peak portion of the luminance curve as the maximum luminance value.
  • a certain modification of the value can effectively avoid the appearance of extreme values, thereby further improving the accuracy of the test.
  • measuring the brightness value of the reference object through the transparent display substrate by using an optical measuring device to obtain the second brightness difference ⁇ L 2 includes:
  • calculating the brightness of the black area and the brightness of the white area include:
  • the measured brightness is obtained by taking 110% of the minimum value among the luminance values of the valley portion of the luminance curve as the minimum luminance value and 90% of the maximum value among the luminance values of the peak portion of the luminance curve as the maximum luminance value.
  • a certain modification of the value can effectively avoid the appearance of extreme values, thereby further improving the accuracy of the test.
  • the optical measuring device 22 is a luminance meter or an image sensor.
  • the optical measuring device 22 can be a luminance meter or an image sensor, and can also be other brightness measuring instruments capable of fully reflecting the visibility of the reference object.
  • the distance between the optical measuring device 22 and the reference object 23 is fixed.
  • the distance between the optical measuring device and the reference object affects the visibility of the reference object measured by the optical measuring device
  • the distance between the optical measuring device and the reference object can be made in order to more accurately test the transparency of the transparent display substrate.
  • the transparent display substrate can be placed between the optical measuring device and the reference object and the visibility of the reference object can be measured through the transparent display substrate, thereby avoiding the optical measuring device
  • the influence of the distance between the reference object and the reference object on the measurement result is favorable for accurately determining the influence of the transparent display substrate on the visibility of the reference object, thereby more accurately testing the transparency effect of the transparent display substrate.
  • the device further includes a light source 24. Since the test of the transparency of the transparent display substrate needs to be performed under illumination conditions, the light source 24 can provide stable and continuous illumination for the test process, reduce the influence of natural light on the test result, and is beneficial to improve the test accuracy of the transparency effect.
  • the light source 24 is a standard light source.
  • the light source can also be a normal light source.
  • standard light sources usually conform to international standards, providing more stable and easily adjustable illumination.
  • source 24 typically selects a standard source, such as a D65 standard source.
  • the distance and angle of the light source 24 from the reference object 23 are both fixed. Since the distance and the angle between the light source 24 and the reference object 23 affect the illuminance of the surface of the reference object, thereby affecting the measurement of the reference object using the optical measuring device, the distance and the angle between the light source and the reference object can be fixed, thereby avoiding The influence of the distance and angle of the light source and the reference object on the measurement results is beneficial to the standard. The influence of the transparency display substrate on the visibility of the reference object is surely judged, thereby more accurately testing the transparency effect of the transparent display substrate.
  • the illumination of the standard swatch is fixed.
  • the illumination of the standard color plate is fixed, it is convenient to compare and judge the transparency effects of different transparent display substrates.
  • Embodiment 4 of the present invention further provides a method for testing a transparent effect of a transparent display substrate by using the device provided in Embodiment 2 of the present invention.
  • the method includes:
  • Step 61 selecting a standard color swatch as a reference object
  • Step 62 using the optical measuring device to directly measure the brightness of different portions of the black region and the brightness of different portions of the white region, and draw a brightness curve according to the measured brightness values;
  • Step 63 taking 110% of the minimum values among the luminance values of the valley portion of the luminance curve drawn in step 62 as the minimum luminance value, and using 90% of the maximum value among the luminance values of the peak portion of the luminance curve as the maximum luminance The value, respectively, calculates the average value of each luminance value of the valley and the peak portion, and obtains the brightness of the black region. And the brightness of the white area
  • Step 64 according to the brightness of the black area And the brightness of the white area
  • the first brightness difference ⁇ L 1 is obtained , and the calculation formula is
  • Step 65 using the optical measuring device to measure the brightness of different portions of the black region and the brightness of different portions of the white region through the transparent display substrate, and plot the brightness curve according to the measured brightness values;
  • Step 66 taking 110% of the minimum values among the luminance values of the valley portion of the luminance curve drawn in step 65 as the minimum luminance value, and using 90% of the maximum value among the luminance values of the peak portion of the luminance curve as the maximum luminance.
  • the value respectively, calculates the average value of each luminance value of the valley and the peak portion, and obtains the brightness of the black region. And the brightness of the white area
  • Step 67 according to the brightness of the black area And the brightness of the white area Obtaining a second brightness difference ⁇ L 2 , the calculation formula is
  • Step 68 The transparency recognition module calculates the identification ID of the transparent display substrate according to the first brightness difference ⁇ L 1 and the second brightness difference ⁇ L 2 , and the calculation formula is:
  • Step 69 Determine a transparency effect of the transparent display substrate according to the identification ID. Specifically, the higher the visibility ID, the better the transparency effect.
  • the embodiments of the present invention provide an apparatus and method for testing a transparent effect of a transparent display substrate.
  • the device includes a transparency recognition module, an optical measurement device, and a reference.
  • the first brightness difference can be directly obtained by the optical measuring device and the reference object, and the brightness of the reference object can be measured through the transparent display substrate to obtain a second brightness difference.
  • Calculating the reference object recognition degree according to the first brightness difference and the second brightness difference since the transparent effect of the transparent display substrate is directly visible to the transparent display substrate, the object behind the transparent display substrate is directly visible Influence, and the recognition degree of the object is an important factor to measure whether the object behind the transparent display substrate can be clearly seen.
  • the transparency effect of the transparent display substrate can be judged by measuring the influence of the transparent display substrate on the recognition of the reference object, thereby achieving
  • the purpose of testing the transparent effect of the transparent display substrate is to facilitate the evaluation of the transparent display substrate; and since the influence of the ambient light on different parts of the reference object is the same, obtaining the identification by the difference in brightness can eliminate the ambient light pair.
  • the impact of the test improves the accuracy of the test on the transparent display substrate.

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Abstract

一种测试透明显示基板（25）的透明效果的设备及方法。该设备包括透明度辨识模块（21）、光学测量装置（22）以及包括颜色不同的两种区域的参照物（23）。所述光学测量装置（22）能够直接测量所述参照物（23）的颜色不同的两种区域的亮度以获取第一亮度差，以及透过所述透明显示基板（25）测量所述参照物（23）的颜色不同的两种区域的亮度以获取第二亮度差。所述透明度辨识模块（21）根据所述第一亮度差和第二亮度差计算所述透明显示基板（25）的辨识度ID，计算公式为：ID=ΔL 2 /ΔL 1 X100%，其中所述ΔL1为第一亮度差，ΔL2为第二亮度差。该设备及方法可以消除环境光对测试的影响，提高对透明显示基板（25）的测试精度。

Description

一种测试透明显示基板的透明效果的设备及方法 技术领域
本发明的实施例涉及一种测试透明显示基板的透明效果的设备及方法。
背景技术
目前，随着显示技术的发展，透明显示技术作为一种新兴的显示技术已经得到越来越多的关注。透明显示基板在显示图像时，使用者能透过透明显示基板看到其后放置的物品。透明效果越好，则使用者透过透明显示基板看到的透明显示基板后面的物体越清晰。因此，对透明显示基板的透明效果的测试变得尤为重要。
在现有技术中，利用透明效果测试装置(参见图1)，一般采用以下两种方法对透明显示基板进行测试。在第一种方法中，在透明显示基板后面放置一个包括黑白图案的测试板；利用显示器色彩分析仪CA210透过透明显示基板分别检测所述测试板中黑色区域的亮度LB和白色区域的亮度LW；根据所述黑色区域的亮度LB和白色区域的亮度LW以及公式
Figure PCTCN2015089914-appb-000001
来获取测试板中黑色区域和白色区域的亮度对比度参数T；根据所述亮度对比度参数T判断透明显示基板的透明效果，所述亮度对比度参数T越大，所述透明显示基板的透明效果越好。在第二种方法中，首先直接检测测试板中黑色区域的亮度和白色区域的亮度以获取初始对比度参数T0；然后透过所述透明显示基板获取黑色区域的亮度和白色区域的亮度的对比度参数T；根 据所述对比度参数T和初始比度参数T0以及公式
Figure PCTCN2015089914-appb-000002
来获取透明显示基板的透明效果参数CR；根据所述透明效果参数CR判断透明显示基板的透明效果，所述透明效果参数CR越大，所述透明显示基板的透明效果越好。
但是，无论采取上述哪种方式对透明显示基板进行测试，都需要在一定光照条件下进行，因此不可避免地会受到周围环境光的干扰，进而影响透明显示基板的测试精度。
发明内容
本发明要解决的技术问题之一是现有技术中因受环境光干扰所导致的对透明显示基板的透明效果的测试精度较差的问题。
本发明实施例提供了一种测试透明显示基板的透明效果的设备，包括：透明度辨识模块、光学测量装置以及包括颜色不同的两种区域的参照物；所述光学测量装置能够直接测量所述参照物的颜色不同的两种区域的亮度以获取第一亮度差，以及透过所述透明显示基板测量所述参照物的颜色不同的两种区域的亮度以获取第二亮度差；所述透明度辨识模块根据所述第一亮度差和第二亮度差计算所述透明显示基板的辨识度ID，计算公式为：
Figure PCTCN2015089914-appb-000003
其中，所述ΔL1为第一亮度差，ΔL2为第二亮度差。
本发明实施例提供的测试透明显示基板的透明效果的设备包括透明度辨识模块、光学测量装置以及参照物；利用该设备测试透明显示基板的透明度时，可通过所述光学测量装置和参照物直接获取第一亮度差，以及透 过所述透明显示基板测量所述参照物的颜色不同的两种区域的亮度以获取第二亮度差；根据所述第一亮度差和第二亮度差可计算出参照物的辨识度；由于透明显示基板的透明效果对能否透过所述透明显示基板清晰地看到透明显示基板后面的物体有直接影响，而物体的辨识度是衡量能否清晰看到透明显示基板后面的物体的重要因素，因此可通过衡量透明显示基板对参照物的辨识度的影响来判断透明显示基板的透明效果，从而达到测试透明显示基板的透明效果的目的，有利于对透明显示基板进行测评；并且，由于环境光对参照物的不同部分的影响是相同的，因此通过亮度差的方式获取辨识度可消除环境光对测试的影响，提高对透明显示基板的测试精度。
可选地，所述光学测量装置与所述参照物的距离固定。
因为所述光学测量装置与参照物的距离会影响使用光学测量装置测量参照物的辨识度，因此，为了更加准确地测试透明显示基板的透明效果，可使所述光学测量装置与参照物的距离固定，在使用所述光学测量装置直接测量参照物的亮度后，可将透明显示基板放置在光学测量装置与参照物之间并透过透明显示基板测量参照物的辨识度，从而避免光学测量装置与参照物之间的距离不固定对测量结果的影响，有利于准确地判断透明显示基板对参照物的辨识度的影响，从而更加准确地测试透明显示基板的透明效果。
可选地，所述光学测量装置为亮度计或图像传感器。
因为通过亮度计或图像传感器可对参照物上的不同区域进行测量，因此利用亮度计或图像传感器测量所得的结果可更加全面地反映参照物的辨识度，从而有利于更准确地判断透明显示基板的透明效果。
可选地，所述参照物为标准色板，所述标准色板包括间隔设置的黑色区域和白色区域。
因为标准色板结构简单，且标准色板的黑色区域和白色区域均为标准色，因此采用标准色板作为参照物有利于提高辨识度测试的准确性。
可选地，当所述光学测量装置直接测量所述参照物的亮度时，所述白色区域的亮度和黑色区域的亮度之间的差值为第一亮度差；以及
当所述光学测量装置透过所述透明显示基板测量所述参照物的亮度时，所述白色区域的亮度和黑色区域的亮度之间的差值为第二亮度差。
可选地，所述设备还包括光源，且所述光源与所述参照物的距离和角度均固定。
通过所述光源可以在测试的过程中为参照物提供稳定持续的光照，有利于透明效果的测试；并且，由于光源与参照物的距离和角度均会影响参照物表面的照度，从而影响使用光学测量装置对参照物辨识度的测量，因此，可使光源与参照物的距离和角度均固定，避免光源与参照物的距离和角度对测量结果的影响，有利于准确地判断透明显示基板对参照物的辨识度的影响，从而更加准确地测试透明显示基板的透明效果。
可选地，当透过所述透明显示基板测量所述参照物的亮度时，所述光源与所述参照物位于所述透明显示基板的同一侧。
当透过所述透明显示基板测量所述参照物的亮度时，将所述光源与所述参照物设置在所述透明显示基板的同一侧，可提高光源对参照物的光照效果，有利于进行透明效果的测试，从而使透明效果的测试精度得以提升。
本发明实施例提供了一种测试透明显示基板的透明效果的方法，所述 方法包括：
选取包括颜色不同的两种区域的参照物；
使用光学测量装置直接测量所述参照物的颜色不同的两种区域的亮度，以获取第一亮度差ΔL1；
将所述透明显示基板放置在所述光学测量装置和所述参照物之间，使用光学测量装置透过所述透明显示基板测量所述参照物的颜色不同的两种区域的亮度，以获取第二亮度差ΔL2；
透明度辨识模块根据所述第一亮度差和第二亮度差计算所述透明显示基板的辨识度ID，计算公式为：
Figure PCTCN2015089914-appb-000004
以及
根据所述辨识度ID判断所述透明显示基板的透明效果。具体地，辨识度ID越高，透明效果越好。
在本发明实施例提供的测试透明显示基板的透明效果的方法中，通过所述光学测量装置和参照物直接获取第一亮度差，以及透过所述透明显示基板测量所述参照物的颜色不同的两种区域的亮度以获取第二亮度差；根据所述第一亮度差和第二亮度差可计算出参照物辨识度；由于透明显示基板的透明效果对能否透过所述透明显示基板清晰地看到透明显示基板后面的物体有直接影响，而物体的辨识度是衡量能否清晰看到透明显示基板后面的物体的重要因素，因此可通过衡量透明显示基板对参照物的辨识度的影响来判断透明显示基板的透明效果，从而达到测试透明显示基板的透明效果的目的，有利于对透明显示基板进行测评；并且，由于环境光对参照物的不同部分的影响是相同的，因此通过亮度差的方式获取辨识度可消除 环境光对测试的影响，提高对透明显示基板的测试精度。
可选地，所述参照物为标准色板，所述标准色板包括间隔设置的黑色区域和白色区域。
因为标准色板结构简单，且标准色板的黑色区域和白色区域均为标准色，因此采用标准色板作为参照物有利于提高辨识度测试的准确性。
可选地，当所述光学测量装置直接测量所述参照物的亮度时，所述白色区域的亮度和黑色区域的亮度之间的差值为第一亮度差；以及
当所述光学测量装置透过所述透明显示基板测量所述参照物的亮度时，所述白色区域的亮度和黑色区域的亮度之间的差值为第二亮度差。
可选地，使用光学测量装置直接测量所述参照物，以获取第一亮度差ΔL1包括：
分别测量黑色区域的不同部分的亮度和白色区域的不同部分的亮度，根据测得的各亮度值绘制亮度曲线；
计算所述黑色区域的亮度和白色区域的亮度，所述黑色区域的亮度为所述亮度曲线的波谷部分的各亮度值的平均值，所述白色区域的亮度为所述亮度曲线的波峰部分的各亮度值的平均值；以及
计算所述白色区域的亮度和黑色区域的亮度之间的差值，作为所述第一亮度差ΔL1。
由于受各种外界因素的影响，黑色区域的不同部分的亮度可能不同，白色区域的不同部分的亮度也可能会不同，因此将波谷部分的各亮度值的平均值作为黑色区域的亮度，将波峰部分的各亮度值的平均值作为白色区域的亮度，可提高透明效果的测试精度。
可选地，计算所述黑色区域的亮度和白色区域的亮度包括：
在位于所述亮度曲线的波谷部分的各亮度值中，将所述各亮度值中的最小值的110％作为最小亮度值，计算位于波谷部分的各亮度值的平均值；以及
在位于所述亮度曲线的波峰部分的各亮度值中，将所述各亮度值中的最大值的90％作为最大亮度值，计算位于波峰部分的各亮度值的平均值。
通过将亮度曲线的波谷部分的各亮度值中的最小值的110％作为最小亮度值以及将亮度曲线的波峰部分的各亮度值中的最大值的90％作为最大亮度值，对测量得到的亮度值进行一定的修改，可有效避免极端值的出现，从而进一步提高测试的精度。
可选地，使用光学测量装置透过所述透明显示基板测量所述参照物的颜色不同的两种区域的亮度，以获取第二亮度差ΔL2包括：
使用光学测量装置透过所述透明显示基板分别测量黑色区域的不同部分的亮度和白色区域的不同部分的亮度，根据测得的各亮度值绘制亮度曲线；
计算所述黑色区域的亮度和白色区域的亮度，所述黑色区域的亮度为所述亮度曲线的波谷部分的各亮度值的平均值，所述白色区域的亮度为所述亮度曲线的波峰部分的各亮度值的平均值；以及
计算所述白色区域的亮度和黑色区域的亮度之间的差值，作为所述第二亮度差ΔL2。
可选地，计算所述黑色区域的亮度和白色区域的亮度包括：
在位于所述亮度曲线的波谷部分的各亮度值中，将所述各亮度值中的 最小值的110％作为最小亮度值，计算位于波谷部分的各亮度值的平均值；以及
在位于所述亮度曲线的波峰部分的各亮度值中，将所述各亮度值中的最大值的90％作为最大亮度值，计算位于波峰部分的各亮度值的平均值。
附图说明
为了更清楚地说明本发明实施例的技术方案，下面将对实施例的附图作简单地介绍。显而易见地，下面描述中的附图仅仅涉及本发明的一些实施例，而非对本发明的限制。
图1为现有技术中测试透明显示基板的透明度的设备的结构示意图；
图2为本发明实施例一提供的测试透明显示基板的透明度的设备的结构示意图；
图3为本发明实施例二提供的测试透明显示基板的透明度的设备的结构示意图；
图4为本发明实施例三提供的一种测试透明显示基板的透明效果的方法流程图；
图5为本发明实施例三中根据测得的参照物不同部分的各亮度值绘制的亮度曲线示意图；
图6为本发明实施例四提供的一种测试透明显示基板的透明效果的方法流程图。
具体实施方式
为使本发明实施例的目的、技术方案和优点更加清楚，下面将结合本发明实施例的附图，对本发明实施例的技术方案进行清楚、完整地描述。显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。 基于所描述的本发明的实施例，本领域普通技术人员在无需创造性劳动的前提下所获得的所有其他实施例，都属于本发明保护的范围。
本发明实施例提供了一种测试透明显示基板的透明效果的设备及方法。以下分别列举两个实施例来具体说明本发明的测试透明显示基板的透明效果的设备及方法。
本发明实施例一提供了一种测试透明显示基板的透明效果的设备。参见图2，所述设备包括：透明度辨识模块21、光学测量装置22以及包括颜色不同的两种区域的参照物23。所述光学测量装置22能够直接测量所述参照物23的颜色不同的两种区域的亮度以获取第一亮度差，以及透过所述透明显示基板25测量所述参照物23的颜色不同的两种区域的亮度以获取第二亮度差。所述透明度辨识模块根据所述第一亮度差和第二亮度差计算所述透明显示基板的辨识度ID，计算公式为：
Figure PCTCN2015089914-appb-000005
其中，所述ΔL1为第一亮度差，ΔL2为第二亮度差。
在本发明实施例一提供的测试透明显示基板的透明效果的设备中，当利用该设备测试透明显示基板的透明度时，首先通过所述光学测量装置和参照物直接获取第一亮度差，以及透过所述透明显示基板测量所述参照物的颜色不同的两种区域的亮度以获取第二亮度差；根据所述第一亮度差和第二亮度差可计算出参照物的辨识度；由于透明显示基板的透明效果对能否透过所述透明显示基板清晰地看到透明显示基板后面的物体有直接影响，而物体的辨识度是衡量能否清晰看到透明显示基板后面的物体的重要因素，因此可通过衡量透明显示基板对参照物的辨识度的影响来判断透明 显示基板的透明效果，从而达到测试透明显示基板的透明效果的目的，有利于对透明显示基板进行测评；并且，由于环境光对参照物的不同部分的影响是相同的，因此通过亮度差的方式获取辨识度可消除环境光对测试的影响，提高对透明显示基板的测试精度。
可选地，所述光学测量装置22与所述参照物23的距离固定。
因为所述光学测量装置与参照物的距离会影响使用光学测量装置测量参照物的辨识度，因此，为了更加准确地测试透明显示基板的透明效果，可使所述光学测量装置与参照物的距离固定，在使用所述光学测量装置直接测量参照物的亮度后，可将透明显示基板放置在光学测量装置与参照物之间并透过透明显示基板测量参照物的辨识度，从而避免光学测量装置与参照物之间的距离不固定对测量结果的影响，有利于准确地判断透明显示基板对参照物的辨识度的影响，从而更加准确地测试透明显示基板的透明效果。
可选地，所述光学测量装置22为亮度计或图像传感器。
因为通过亮度计或图像传感器可对参照物上的不同区域进行测量，因此本发明实施例中利用亮度计或图像传感器测量所得的结果可更加全面地反映参照物的辨识度，从而有利于更准确地判断透明显示基板的透明效果。所述光学测量装置22可以为亮度计或图像传感器，还可以为其它的能够全面反映参照物的辨识度的亮度测量仪器。
可选地，参见图2，所述参照物23为标准色板，所述标准色板包括间隔设置的黑色区域和白色区域。
因为标准色板结构简单，且标准色板的黑色区域和白色区域均为标准 色，因此采用标准色板作为参照物有利于提高辨识度测试的准确性。
此外，所述参照物还可以为液晶显示装置，但在使用液晶显示装置作为参照物时，需要将液晶显示装置调制为黑色画面和白色画面。由于在将液晶显示装置调制为黑色画面和白色画面时，需要专门进行调节，过程比较繁琐，且受液晶显示装置本身显示效果的影响，黑色画面和白色画面难以达到标准的黑色和白色。此外，所述参照物还可以为有机发光二极管OLED显示装置、等离子PDP显示装置、或阴极射线CRT显示装置等其它的显示装置。
在利用所述标准色板作为参照物的情况下，当所述光学测量装置22直接测量所述参照物23的亮度时，所述白色区域的亮度和黑色区域的亮度之间的差值为第一亮度差ΔL1；当所述光学测量装置22透过所述透明显示基板25测量所述参照物23的亮度时，所述白色区域的亮度和黑色区域的亮度之间的差值为第二亮度差ΔL2。
当利用所述光学测量装置22直接测量所述参照物23的亮度时，分别测量黑色区域B的不同部分的亮度和白色区域W的不同部分的亮度，根据测得的各亮度值绘制亮度曲线；其中，所述黑色区域的亮度为所述亮度曲线的波谷部分的各亮度值的平均值，所述白色区域的亮度为所述亮度曲线的波峰部分的各亮度值的平均值。由于受到如制造工艺的水平、测量误差和环境因素等各种外在因素的影响，测得的黑色区域的不同部分的亮度可能不同，测得的白色区域的不同部分的亮度也可能会不同，因此本发明各实施例中将波谷部分的各亮度值的平均值作为黑色部分的亮度，将波峰部分的各亮度值的平均值作为白色部分的亮度，这可提高透明效果的测试精度。
可选地，可将亮度曲线的波谷部分的各亮度值中的最小值的110％作为最小亮度值以及将亮度曲线的波峰部分的各亮度值中的最大值的90％作为最大亮度值，通过该方式对测量得到的亮度值进行一定的修改，可以避免极端值的出现，从而进一步提高测试的精度。
可选地，所述标准色板的照度固定。当所述标准色板的照度固定时，便于对不同的透明显示基板的透明效果进行比较和判断。
本发明实施例二还提供了一种测试透明显示基板的透明效果的设备。参见图3，与本发明实施例一提供的测试透明显示基板的透明效果的设备相比，本发明实施例二提供的测试透明显示基板的透明效果的设备还包括光源24。通过所述光源24为测试过程提供稳定持续的光照，可以降低自然光对测试结果的影响，从而进一步提高透明效果的测试准确度。
可选地，所述光源24为标准光源。此外，所述光源还可以为普通光源。但是，相对普通光源，标准光源通常符合国际标准，提供的光照更加稳定且易调节。因此，光源24通常选择标准光源，例如D65标准光源。
可选地，所述光源24与所述参照物23的距离和角度均固定。由于光源24与参照物23的距离和角度均会影响参照物表面的照度，从而影响使用光学测量装置对参照物辨识度的测量，因此，可使光源与参照物的距离和角度均固定，避免光源与参照物的距离和角度对测量结果的影响，有利于准确地判断透明显示基板对参照物的辨识度的影响，从而更加准确地测试透明显示基板的透明效果。
本发明实施例三提供了一种测试透明显示基板的透明效果的方法。参见图4，所述方法包括：
步骤41，选取包括颜色不同的两种区域的参照物；
步骤42，使用光学测量装置直接测量所述参照物的颜色不同的两种区域的亮度，以获取第一亮度差ΔL1；
步骤43，将所述透明显示基板放置在所述光学测量装置和所述参照物之间，使用光学测量装置透过所述透明显示基板测量所述参照物的颜色不同的两种区域的亮度，以获取第二亮度差ΔL2；
步骤44，透明度辨识模块根据所述第一亮度差和第二亮度差计算所述透明显示基板的辨识度ID，计算公式为：
Figure PCTCN2015089914-appb-000006
以及
步骤45，根据所述辨识度ID判断所述透明显示基板的透明效果。具体地，辨识度ID越高，透明效果越好。
在本发明实施例三提供的测试透明显示基板的透明效果的方法中，通过所述光学测量装置和参照物直接获取第一亮度差，以及透过所述透明显示基板测量所述参照物的颜色不同的两种区域的亮度以获取第二亮度差；根据所述第一亮度差和第二亮度差可计算出参照物辨识度；由于透明显示基板的透明效果对能否透过所述透明显示基板清晰地看到透明显示基板后面的物体有直接影响，而物体的辨识度是衡量能否清晰看到透明显示基板后面的物体的重要因素，因此可通过衡量透明显示基板对参照物的辨识度的影响来判断透明显示基板的透明效果，从而达到测试透明显示基板的透明效果的目的，有利于对透明显示基板进行测评；并且，由于环境光对参照物的不同部分的影响是相同的，因此通过亮度差的方式获取辨识度可消除环境光对测试的影响，提高对透明显示基板的测试精度。
可选地，所述参照物23为标准色板，所述标准色板包括间隔设置的黑色区域和白色区域。
因为标准色板结构简单，且标准色板的黑色区域和白色区域均为标准色，因此采用标准色板做为参照物有利于提高辨识度测试的准确性。
此外，所述参照物还可以为液晶显示器、有机发光二极管OLED显示器、等离子PDP显示器、或阴极射线CRT显示器等其它的显示器。但在使用液晶显示器等显示装置作为参照物时，需要将液晶显示器调制为黑色画面和白色画面。由于在将液晶显示器调制为黑色画面和白色画面时，需要专门进行调节，过程比较繁琐，且受液晶显示器本身显示效果的影响，黑色画面和白色画面难以达到标准的黑色和白色。
在利用所述标准色板作为参照物的情况下，当所述光学测量装置直接测量所述参照物的亮度时，所述白色区域的亮度和黑色区域的亮度之间的差值为第一亮度差ΔL1；当所述光学测量装置透过所述透明显示基板测量所述参照物的亮度时，所述白色区域的亮度和黑色区域的亮度之间的差值为第二亮度差ΔL2。
可选地，使用光学测量装置直接测量所述参照物，以获取第一亮度差ΔL1包括：
分别测量黑色区域的不同部分的亮度和白色区域的不同部分的亮度，根据测得的各亮度值绘制亮度曲线，参见图5(虚线部分)；
计算所述黑色区域的亮度
Figure PCTCN2015089914-appb-000007
和白色区域的亮度
Figure PCTCN2015089914-appb-000008
所述黑色区域的亮度
Figure PCTCN2015089914-appb-000009
为所述亮度曲线的波谷部分的各亮度值的平均值，所述白色区域的亮度
Figure PCTCN2015089914-appb-000010
为所述亮度曲线的波峰部分的各亮度值的平均值；以及
计算所述白色区域的亮度
Figure PCTCN2015089914-appb-000011
和黑色区域的亮度
Figure PCTCN2015089914-appb-000012
之间的差值，作为所述第一亮度差ΔL1，其中计算公式为：
Figure PCTCN2015089914-appb-000013
其中，所述
Figure PCTCN2015089914-appb-000014
为白色区域的亮度，
Figure PCTCN2015089914-appb-000015
为黑色区域的亮度。
由于受各种外界因素的影响，黑色区域的不同部分的亮度可能不同，白色区域的不同部分的亮度也可能会不同，因此将波谷部分的各亮度值的平均值作为黑色区域的亮度，将波峰部分的各亮度值的平均值作为白色区域的亮度，可提高透明效果的测试精度。
可选地，计算所述黑色区域的亮度和白色区域的亮度包括：
在位于所述亮度曲线的波谷部分的各亮度值中，将所述各亮度值中的最小值的110％作为最小亮度值，计算位于波谷部分的各亮度值的平均值；以及
在位于所述亮度曲线的波峰部分的各亮度值中，将所述各亮度值中的最大值的90％作为最大亮度值，计算位于波峰部分的各亮度值的平均值。
通过将亮度曲线的波谷部分的各亮度值中的最小值的110％作为最小亮度值以及将亮度曲线的波峰部分的各亮度值中的最大值的90％作为最大亮度值，对测量得到的亮度值进行一定的修改，可有效避免极端值的出现，从而进一步提高测试的精度。
可选地，使用光学测量装置透过所述透明显示基板测量所述参照物的亮度值，以获取第二亮度差ΔL2包括：
使用光学测量装置透过所述透明显示基板分别测量黑色区域的不同部分的亮度和白色区域的不同部分的亮度，根据测得的各亮度值绘制亮度曲 线，参见图5(实线部分)；
计算所述黑色区域的亮度
Figure PCTCN2015089914-appb-000016
和白色区域的亮度
Figure PCTCN2015089914-appb-000017
所述黑色区域的亮度
Figure PCTCN2015089914-appb-000018
为所述亮度曲线的波谷部分的各亮度值的平均值，所述白色区域的亮度
Figure PCTCN2015089914-appb-000019
为所述亮度曲线的波峰部分的各亮度值的平均值；以及
计算所述白色区域的亮度
Figure PCTCN2015089914-appb-000020
和黑色区域的亮度
Figure PCTCN2015089914-appb-000021
之间的差值，作为所述第二亮度差ΔL2，其中计算公式为：
Figure PCTCN2015089914-appb-000022
其中，所述
Figure PCTCN2015089914-appb-000023
为白色区域的亮度，
Figure PCTCN2015089914-appb-000024
为黑色区域的亮度。
并且，计算所述黑色区域的亮度和白色区域的亮度包括：
在位于所述亮度曲线的波谷部分的各亮度值中，将所述各亮度值中的最小值的110％作为最小亮度值，计算位于波谷部分的各亮度值的平均值；以及
在位于所述亮度曲线的波峰部分的各亮度值中，将所述各亮度值中的最大值的90％作为最大亮度值，计算位于波峰部分的各亮度值的平均值。
通过将亮度曲线的波谷部分的各亮度值中的最小值的110％作为最小亮度值以及将亮度曲线的波峰部分的各亮度值中的最大值的90％作为最大亮度值，对测量得到的亮度值进行一定的修改，可有效避免极端值的出现，从而进一步提高测试的精度。
可选地，所述光学测量装置22为亮度计或图像传感器。
因为通过亮度计或图像传感器可对参照物上的不同区域进行测量，因此本发明实施例中利用亮度计或图像传感器测量所得的结果可更加全面地反映参照物的辨识度，从而有利于更准确地判断透明显示基板的透明效果。 所述光学测量装置22可以为亮度计或图像传感器，还可以为其它的能够全面反映参照物的辨识度的亮度测量仪器。
可选地，所述光学测量装置22与所述参照物23的距离固定。
因为所述光学测量装置与参照物的距离会影响使用光学测量装置测量参照物的辨识度，因此，为了更加准确地测试透明显示基板的透明效果，可使所述光学测量装置与参照物的距离固定，在使用所述光学测量装置直接测量参照物的亮度后，可将透明显示基板放置在光学测量装置与参照物之间并透过透明显示基板测量参照物的辨识度，从而避免光学测量装置与参照物之间的距离不固定对测量结果的影响，有利于准确地判断透明显示基板对参照物的辨识度的影响，从而更加准确地测试透明显示基板的透明效果。
可选地，所述设备还包括光源24。因为透明显示基板的透明度的测试需要在光照条件下进行，而通过所述光源24可以为测试过程提供稳定持续的光照，降低自然光对测试结果的影响，有利于提高透明效果的测试准确度。
可选地，所述光源24为标准光源。此外，所述光源还可以为普通光源。但是相对普通光源，标准光源通常符合国际标准，提供的光照更加稳定且易调节。因此，光源24通常选择标准光源，例如D65标准光源。
可选地，所述光源24与所述参照物23的距离和角度均固定。由于光源24与参照物23的距离和角度均会影响参照物表面的照度，从而影响使用光学测量装置对参照物辨识度的测量，因此，可使光源与参照物的距离和角度均固定，避免光源与参照物的距离和角度对测量结果的影响，有利于准 确地判断透明显示基板对参照物的辨识度的影响，从而更加准确地测试透明显示基板的透明效果。
可选地，所述标准色板的照度固定。当所述标准色板的照度固定时，便于对不同的透明显示基板的透明效果进行比较和判断。
本发明实施例四还提供了利用本发明实施例二提供的设备测试透明显示基板的透明效果的方法。参见图6，所述方法包括：
步骤61，选取标准色板为参照物；
步骤62，使用光学测量装置分别直接测量黑色区域的不同部分的亮度和白色区域的不同部分的亮度，并根据测得的各亮度值绘制亮度曲线；
步骤63，将步骤62中绘制的亮度曲线的波谷部分的各亮度值中的最小值的110％作为最小亮度值，将亮度曲线的波峰部分的各亮度值中的最大值的90％作为最大亮度值，分别计算波谷和波峰部分的各亮度值的平均值，得到黑色区域的亮度
Figure PCTCN2015089914-appb-000025
和白色区域的亮度
Figure PCTCN2015089914-appb-000026
步骤64，根据所述黑色区域的亮度
Figure PCTCN2015089914-appb-000027
和白色区域的亮度
Figure PCTCN2015089914-appb-000028
得到第一亮度差ΔL1，计算公式为
Figure PCTCN2015089914-appb-000029
步骤65，使用光学测量装置透过所述透明显示基板分别测量黑色区域的不同部分的亮度和白色区域的不同部分的亮度，根据测得的各亮度值绘制亮度曲线；
步骤66，将步骤65中绘制的亮度曲线的波谷部分的各亮度值中的最小值的110％作为最小亮度值，将亮度曲线的波峰部分的各亮度值中的最大值的90％作为最大亮度值，分别计算波谷和波峰部分的各亮度值的平均值，得到黑色区域的亮度
Figure PCTCN2015089914-appb-000030
和白色区域的亮度
Figure PCTCN2015089914-appb-000031
步骤67，根据所述黑色区域的亮度
Figure PCTCN2015089914-appb-000032
和白色区域的亮度
Figure PCTCN2015089914-appb-000033
得到第二亮度差ΔL2，计算公式为
Figure PCTCN2015089914-appb-000034
步骤68，透明度辨识模块根据所述第一亮度差ΔL1和第二亮度差ΔL2，计算所述透明显示基板的辨识度ID，计算公式为：
Figure PCTCN2015089914-appb-000035
以及
步骤69，根据所述辨识度ID判断所述透明显示基板的透明效果。具体地，辨识度ID越高，透明效果越好。
综上所述，本发明实施例提供了一种测试透明显示基板的透明效果的设备及方法。所述设备包括：透明度辨识模块、光学测量装置以及参照物。当利用该设备测试透明显示基板的透明度时，可通过所述光学测量装置和参照物直接获取第一亮度差，以及透过所述透明显示基板测量所述参照物的亮度以获取第二亮度差；根据所述第一亮度差和第二亮度差可计算出参照物辨识度；由于透明显示基板的透明效果对能否透过所述透明显示基板清晰地看到透明显示基板后面的物体有直接影响，而物体的辨识度是衡量能否清晰看到透明显示基板后面的物体的重要因素，因此可通过衡量透明显示基板对参照物的辨识度的影响来判断透明显示基板的透明效果，从而达到测试透明显示基板的透明效果的目的，有利于对透明显示基板进行测评；并且，由于环境光对参照物的不同部分的影响是相同的，因此通过亮度差的方式获取辨识度可消除环境光对测试的影响，提高对透明显示基板的测试精度。
以上所述仅是本发明的示范性实施方式，而非用于限制本发明的保护范围，本发明的保护范围由所附的权利要求确定。
本申请要求于2015年5月18日递交的中国专利申请第201510254560.4号的优先权，在此全文引用上述中国专利申请公开的内容以作为本申请的一部分。

Claims (14)

  1. 一种测试透明显示基板的透明效果的设备，包括：透明度辨识模块、光学测量装置以及包括颜色不同的两种区域的参照物；所述光学测量装置能够直接测量所述参照物的颜色不同的两种区域的亮度以获取第一亮度差，以及透过所述透明显示基板测量所述参照物的颜色不同的两种区域的亮度以获取第二亮度差；所述透明度辨识模块根据所述第一亮度差和第二亮度差计算所述透明显示基板的辨识度ID，计算公式为：
    Figure PCTCN2015089914-appb-100001
    其中，所述ΔL1为第一亮度差，ΔL2为第二亮度差。
  2. 如权利要求1所述的设备，其中，所述光学测量装置与所述参照物的距离固定。
  3. 如权利要求1或2所述的设备，其中，所述光学测量装置为亮度计或图像传感器。
  4. 如权利要求1-3任一项所述的设备，其中，所述参照物为标准色板，所述标准色板包括间隔设置的黑色区域和白色区域。
  5. 如权利要求4所述的设备，其中，
    当所述光学测量装置直接测量所述参照物的亮度时，所述白色区域的亮度和黑色区域的亮度之间的差值为第一亮度差ΔL1；以及
    当所述光学测量装置透过所述透明显示基板测量所述参照物的亮度时，所述白色区域的亮度和黑色区域的亮度之间的差值为第二亮度差ΔL2。
  6. 如权利要求1-5任一项所述的设备，其中，所述设备还包括光源，且所述光源与所述参照物的距离和角度均固定。
  7. 如权利要求6所述的设备，其中，当透过所述透明显示基板测量所述参照物的亮度时，所述光源与所述参照物位于所述透明显示基板的同一侧。
  8. 一种测试透明显示基板的透明效果的方法，包括：
    选取包括颜色不同的两种区域的参照物；
    使用光学测量装置直接测量所述参照物的颜色不同的两种区域的亮度，以获取第一亮度差ΔL1；
    将所述透明显示基板放置在所述光学测量装置和所述参照物之间，使用光学测量装置透过所述透明显示基板测量所述参照物的颜色不同的两种区域的亮度，以获取第二亮度差ΔL2；
    透明度辨识模块根据所述第一亮度差ΔL1和第二亮度差ΔL2计算所述透明显示基板的辨识度ID，计算公式为：
    Figure PCTCN2015089914-appb-100002
    以及
    根据所述辨识度ID判断所述透明显示基板的透明效果。
  9. 如权利要求8所述的方法，其中，所述参照物为标准色板，所述标准色板包括间隔设置的黑色区域和白色区域。
  10. 如权利要求9所述的方法，其中，
    当所述光学测量装置直接测量所述参照物的亮度时，所述白色区域的亮度和黑色区域的亮度之间的差值为第一亮度差ΔL1；以及
    当所述光学测量装置透过所述透明显示基板测量所述参照物的亮度 时，所述白色区域的亮度和黑色区域的亮度之间的差值为第二亮度差ΔL2。
  11. 如权利要求9或10所述的方法，其中，使用光学测量装置直接测量所述参照物，以获取第一亮度差ΔL1包括：
    分别测量黑色区域的不同部分的亮度和白色区域的不同部分的亮度，根据测得的各亮度值绘制亮度曲线；
    计算所述黑色区域的亮度和白色区域的亮度，所述黑色区域的亮度为所述亮度曲线的波谷部分的各亮度值的平均值，所述白色区域的亮度为所述亮度曲线的波峰部分的各亮度值的平均值；以及
    计算所述白色区域的亮度和黑色区域的亮度之间的差值，作为所述第一亮度差ΔL1。
  12. 如权利要求11所述的方法，其中，计算所述黑色区域的亮度和白色区域的亮度包括：
    在位于所述亮度曲线的波谷部分的各亮度值中，将所述各亮度值中的最小值的110％作为最小亮度值，计算位于波谷部分的各亮度值的平均值；以及
    在位于所述亮度曲线的波峰部分的各亮度值中，将所述各亮度值中的最大值的90％作为最大亮度值，计算位于波峰部分的各亮度值的平均值。
  13. 如权利要求9或10所述的方法，其中，使用光学测量装置透过所述透明显示基板测量所述参照物的颜色不同的两种区域的亮度，以获取第二亮度差ΔL2包括：
    使用光学测量装置透过所述透明显示基板分别测量黑色区域的不同部分的亮度和白色区域的不同部分的亮度，根据测得的各亮度值绘制亮度曲 线；
    计算所述黑色区域的亮度和白色区域的亮度，所述黑色区域的亮度为所述亮度曲线的波谷部分的各亮度值的平均值，所述白色区域的亮度为所述亮度曲线的波峰部分的各亮度值的平均值；以及
    计算所述白色区域的亮度和黑色区域的亮度之间的差值，作为所述第二亮度差ΔL2。
  14. 如权利要求13所述的方法，其中，计算所述黑色区域的亮度和白色区域的亮度包括：
    在位于所述亮度曲线的波谷部分的各亮度值中，将所述各亮度值中的最小值的110％作为最小亮度值，计算位于波谷部分的各亮度值的平均值；以及
    在位于所述亮度曲线的波峰部分的各亮度值中，将所述各亮度值中的最大值的90％作为最大亮度值，计算位于波峰部分的各亮度值的平均值。
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