CN103900795A - Device and method for testing transparent effect of transparent display screen - Google Patents
Device and method for testing transparent effect of transparent display screen Download PDFInfo
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- CN103900795A CN103900795A CN201410058384.2A CN201410058384A CN103900795A CN 103900795 A CN103900795 A CN 103900795A CN 201410058384 A CN201410058384 A CN 201410058384A CN 103900795 A CN103900795 A CN 103900795A
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Abstract
The invention discloses a device and method for testing the transparent effect of a transparent display screen, and relates to the technical field of liquid crystal display. The device for testing the transparent effect of the transparent display screen comprises an optical measuring device and a reference object, and the optical measuring device can be used for measuring the luminance of the reference object directly or measuring the luminance of the reference object through the transparent display screen. The method for testing the transparent effect of the transparent display screen includes the steps that the reference object is selected; the optical measuring device is used for measuring the contrast ratio CR1 of the reference object directly; the optical measuring device is used for measuring the contrast ratio CR2 of the reference object through the transparent display screen; the transparent effect parameter T of the transparent display screen is calculated, wherein the calculation formula is T=CR2/CR1*100%; the transparent effect of the transparent display screen is judged according to the transparent effect parameter T, wherein the higher the transparent effect parameter T is, the better the transparent effect of the transparent display screen is.
Description
Technical field
The present invention relates to transparent display technique field, relate in particular to a kind of Apparatus and method for of testing transparent display screen transparent effect.
Background technology
At present, along with the development of display technique, transparent display technique is more and more paid close attention to as a kind of emerging display technique, transparent display screen is in the time showing image, user can see through transparent display screen and see the article of placing thereafter, transparent effect is better, and the transparent display screen that user sees through transparent display screen object is below more clear, and therefore the test of the transparent effect to transparent display screen is particularly important.
Because the structure of transparent display screen is different from traditional display screen, at present also ununified method of testing for weighing the transparent effect of transparent display screen, so cause the performance parameter nominal of product that different vendor produces inconsistent, owing to cannot unifying evaluation and test and contrast, cannot objective, real reactor product performance thereby cause, more cannot be optimized design to transparent display screen, and then greatly hinder further developing of transparent display technique.
Summary of the invention
The invention provides a kind of Apparatus and method for of testing transparent display screen transparent effect, can test the transparent effect of transparent display screen.
For achieving the above object, embodiments of the invention adopt following technical scheme:
The embodiment of the present invention provides a kind of equipment of testing transparent display screen transparent effect, comprise: optical measuring device and object of reference, described optical measuring device can directly be measured the brightness of described object of reference, or sees through the brightness that described transparent display screen is measured described object of reference.
Particularly, described optical measuring device is nitometer or imageing sensor.
Further, also comprise light source, in the time measuring the brightness of described object of reference through described transparent display screen, described light source and described object of reference are positioned at described transparent display screen homonymy.
Further, the distance of described brightness measuring device for camera and described object of reference is fixed, and the distance of described light source and described object of reference and angle are all fixing.
Preferably, described light source is standard sources.
Preferably, described object of reference is Standard colour board, and described Standard colour board comprises black part and white portion.
The embodiment of the present invention also provides a kind of method of utilizing the testing of equipment transparent display screen transparent effect described in above-mentioned arbitrary technical scheme, comprising: choose object of reference; Use optical measuring device directly to measure the contrast C R of described object of reference
1; Use described optical measuring device to measure the contrast C R of described object of reference through transparent display screen
2; The transparent effect parameter T that calculates described transparent display screen, computing formula is:
judge the transparent effect of described transparent display screen according to described transparent effect parameter T, described transparent effect parameter T is higher, and the transparent effect of described transparent display screen is better.
Further, described object of reference is Standard colour board, and described Standard colour board comprises black part and white portion, and the measuring method of the contrast C R of described object of reference is specially: use described optical measuring device to measure respectively the brightness L of described black part
bbrightness L with described white portion
w; According to the brightness L of described black part
bbrightness L with described white portion
w, calculate the contrast C R of described object of reference, computing formula is:
Further, the brightness of described black part measured respectively by the described optical measuring device of described use and the brightness of described white portion comprises: measure the brightness of zones of different of described black part and the brightness of the zones of different of described white portion, and draw brightness curve according to the each brightness value recording; Calculate the brightness of described black part and the brightness of described white portion, the brightness of described black part is the mean value of each brightness value of the trough part of described brightness curve, and the brightness of described white portion is the mean value that is positioned at each brightness value of the peak value part of described brightness curve.
Further, the brightness of the described black part of described calculating and the brightness of described white portion comprise: be arranged in each brightness value of trough part of described brightness curve, using the minimum value of described each brightness value 110% as minimum luminance value, be arranged in each brightness value of crest part of described brightness curve, using described each brightness value peaked 90% as maximum brightness value; Calculating is positioned at the mean value of each brightness value of trough part, and calculates the mean value of the each brightness value that is positioned at crest part.
Further, the illumination on described Standard colour board surface is fixed.
The test transparent display screen transparent effect Apparatus and method for that the embodiment of the present invention provides, by the contrast of the described object of reference directly measuring and the contrast of the described object of reference measuring through described transparent display screen are carried out to computing, draw the parameter of the transparent effect that characterizes described transparent display screen, and judge the transparent effect of described transparent display screen according to described transparent effect parameter, because can the transparent effect of transparent display screen see that on seeing through transparent display screen the object after transparent display screen has direct impact clearly, and can the contrast of object be to weigh the key factor that clearly see object, thereby can judge by weighing the impact of the contrast of described transparent display screen on described object of reference the transparent effect of described transparent display screen, described transparent effect parameter can reflect the variation of the contrast of described object of reference, thereby can judge according to described transparent effect parameter the transparent effect of described transparent display screen, reach the object of the transparent effect of test transparent display screen, be conducive to described transparent display screen to be evaluated and tested, for the display effect that promotes described transparent display screen provides standard.
Brief description of the drawings
Fig. 1 is the structural representation of a kind of equipment of testing transparent display screen transparent effect of the embodiment of the present invention in the time that transparent display screen is not set;
Fig. 2 is the structural representation of a kind of equipment of testing transparent display screen transparent effect of the embodiment of the present invention in the time that transparent display screen is set;
Fig. 3 is the process flow diagram of a kind of method of testing transparent display screen transparent effect of the embodiment of the present invention;
Fig. 4 is a kind of brightness curve figure that tests the method that transparent display screen is transparent of the embodiment of the present invention.
Embodiment
Below in conjunction with accompanying drawing, a kind of Apparatus and method for of testing transparent display screen transparent effect of the embodiment of the present invention is described in detail.
See figures.1.and.2, Fig. 1 is a specific embodiment of a kind of equipment of testing transparent display screen transparent effect of the embodiment of the present invention, a kind of equipment of testing transparent display screen transparent effect that the embodiment of the present invention provides, comprise: optical measuring device 2 and object of reference 1, optical measuring device 2 can directly be measured the contrast of object of reference 1, or measures the contrast of object of reference 1 through transparent display screen 3.
The equipment of the test transparent display screen transparent effect that the embodiment of the present invention provides, can directly measure by optical measuring device 2 contrast of object of reference 1, also can measure by optical measuring device 2 contrast of described object of reference 1 through transparent display screen 3, through the contrast of the object of reference 1 directly measuring and the contrast of the object of reference 1 measuring through transparent display screen 3 are carried out to computing, draw the parameter of the transparent effect that can characterize transparent display screen 3, and can judge the transparent effect of transparent display screen 3 according to described transparent effect parameter, because can the transparent effect of transparent display screen see that on seeing through transparent display screen the object after transparent display screen has direct impact clearly, and can the contrast of object be to weigh the key factor that clearly see object, thereby the impact that can pass through the contrast of measurement transparent display screen 3 on object of reference 1 judge the transparent effect of transparent display screen 3, described transparent effect parameter can reflect the variation of the contrast of object of reference 1, thereby can judge according to described transparent effect parameter the transparent effect of transparent display screen 3, reach the object of the transparent effect of test transparent display screen 3, be conducive to transparent display screen to be evaluated and tested, for the display effect that promotes transparent display screen provides standard.
In order to make the result of test more accurate, optical measuring device 2 can be selected nitometer or imageing sensor.Because nitometer or imageing sensor can be measured the zones of different on object of reference 1, thereby measurement result can more comprehensively reflect the contrast of object of reference 1, more accurate, thereby is conducive to judge more accurately the transparent effect of transparent display screen.Optical measuring device 2 can be selected with nitometer or imageing sensor, but is not limited only to this, and the optical measuring device 2 of more than enumerating is only the embodiment of the present invention is carried out illustrating instead of limiting.
The test process of the equipment of the test transparent display screen transparent effect providing due to the embodiment of the present invention need to carry out under certain illumination condition, but it is stable that the intensity of illumination of natural light is difficult to keep, thereby affect test result, therefore, in order to make test result more accurate, the equipment of the test transparent display screen transparent effect that the embodiment of the present invention provides also can comprise light source 4, in test process, provide stable by light source 4 for object of reference 1, sufficient illumination, in the time using optical measuring device 2 to measure the contrast of object of reference 1, stable, sufficient illumination is conducive to the measurement of optical measuring device 2, simultaneously, thing 1 is accepted the illumination of light source 4 for ease of reference, light source 4 and object of reference 1 can be arranged to the homonymy of transparent display screen 3, can improve the lighting effect of light source 4 to object of reference 1, thereby be convenient to the measurement of optical measuring device 2.Thus, can make the result of test more accurate.
Because optical measuring device 2 and the distance of object of reference 1 can affect the contrast that uses optical measuring device 2 to measure object of reference 1, therefore, in order to test more accurately the transparent effect of transparent display screen 3, can make optical measuring device 2 and the distance of object of reference 1 fix, directly measure after the contrast of object of reference 1 at use optical measuring device 2, transparent display screen 3 can be placed on to the contrast of also measuring object of reference 1 between optical measuring device 2 and object of reference 1 through transparent display screen 3, thereby avoid the unfixing impact on measurement result of distance between optical measuring device 2 and object of reference 1, be conducive to judge accurately the impact of the contrast of transparent display screen 3 on object of reference 1, thereby test more accurately the transparent effect of transparent display screen 3, simultaneously, because light source 4 and distance and the angle of object of reference 1 all can affect the illumination inside object of reference 1 table, thereby impact is used the measurement of optical measuring device 2 to object of reference 1 contrast, therefore, can make light source 4 all fixing with distance and the angle of object of reference 1, avoid distance and the impact of angle on measurement result of light source 4 and object of reference 1, be conducive to judge accurately the impact of the contrast of transparent display screen 3 on object of reference 1, thereby test more accurately the transparent effect of transparent display screen 3.
Light source 4 can be selected ordinary light source or standard sources, but the illumination providing due to ordinary light source is difficult to meet unified standard, affect the accuracy of test result, and standard sources meets international standard conventionally, the illumination providing is more stablized and is easily regulated, therefore, light source 4 can preferred standard light source, for example D65 standard sources, owing to having adopted standard sources to carry out illumination to object of reference 1, is conducive to using test result as the standard that promotes transparent display screen transparent effect.
Object of reference 1 can be liquid crystal display or comprises the Standard colour board of black part and white portion, in the time carrying out the measurement of contrast of object of reference 1 by described liquid crystal display as object of reference 1, described liquid crystal display need to be set to respectively to black picture and a white picture; While using described Standard colour board to carry out the measurement of contrast of object of reference 1, can measure the contrast that the black part of described Standard colour board and the contrast of white portion can obtain reference substance 1, while being set to black picture and white picture due to liquid crystal display, need to regulate specially, it is measuring process complexity, and black picture of liquid crystal display and a white picture are subject to the impact of the display effect of liquid crystal display own, be difficult to the black and white of the standard that reaches, therefore the Standard colour board that, preferably includes black part and white portion is as object of reference 1.
With reference to Fig. 3, the embodiment of the present invention also provides a kind of method of testing transparent display screen transparent effect, comprising:
S1, choose object of reference 1;
S2, use optical measuring device 2 are directly measured the contrast C R of object of reference 1
1, any barrier thing including transparent display screen is not set between optical measuring device 1 and object of reference 2, directly measure the contrast of object of reference 1 by optical measuring device 2;
S3, between optical measuring device 1 and object of reference 2, transparent display screen 3 is set, and uses optical measuring device 2 to see through transparent display screen 3 to measure the contrast C R of object of reference 1
2;
The transparent effect parameter T of S4, calculating transparent display screen 3, computing formula is:
S5, judge the transparent effect of transparent display screen 3 according to transparent effect parameter T, T is higher for transparent effect parameter, and the transparent effect of transparent display screen 3 is better.
The method of the test transparent display screen transparent effect that the present embodiment provides, can carry out computing by the contrast of the object of reference 1 to directly measuring and the contrast of the object of reference 1 measuring through transparent display screen 3, draw the parameter of the transparent effect that characterizes transparent display screen 3, and judge the transparent effect of transparent display screen 3 according to described transparent effect parameter, because can the transparent effect of transparent display screen see that on seeing through transparent display screen the object after transparent display screen has direct impact clearly, and can the contrast of object be to weigh the key factor that clearly see object, thereby the impact that can pass through the contrast of measurement transparent display screen on object of reference judge the transparent effect of transparent display screen, described transparent effect parameter can reflect the variation of the contrast of object of reference, particularly it, in the time of the object of reference seeing through after transparent display screen observation transparent display screen, transparent display screen can weaken to some extent to the contrast of object of reference conventionally, the contrast of the object of reference directly measuring conventionally can be larger than the contrast of the object of reference measuring through transparent display screen, therefore, described transparent effect parameter is higher, be that transparent effect parameter more approaches 100%, the contrast of transparent display screen to object of reference to weaken degree less, the transparent effect of transparent display screen is better, thereby can judge according to transparent effect parameter the transparent effect of transparent display screen 3, reach the object of the transparent effect of test transparent display screen 3, be conducive to transparent display screen to be evaluated and tested, for the display effect that promotes transparent display screen provides standard.
Object of reference 1 can be liquid crystal display or comprises the Standard colour board of black part and white portion, in the time carrying out the measurement of contrast of object of reference 1 by liquid crystal display as object of reference 1, liquid crystal display need to be set to respectively to black picture and a white picture, but liquid crystal display is set to black picture and a white picture needs specially liquid crystal display to be regulated, make measuring process complexity, and be subject to the impact of the display effect of liquid crystal display own, black picture of liquid crystal display and a white picture are difficult to the black and white of the standard that reaches, affect the accuracy of contrast test, and Standard colour board is simple in structure, and Standard colour board black part and white portion are standard colors, be conducive to improve the accuracy of contrast test, therefore, the Standard colour board that preferably includes black part and white portion comprises black part and white portion as object of reference Standard colour board, simultaneously, the measuring method of the contrast C R of object of reference 1 can comprise:
Use optical measuring device 2 to measure respectively the brightness L of black part
bbrightness L with white portion
w;
According to the brightness L of black part
bbrightness L with white portion
w, the contrast C R of calculating object of reference 1, computing formula is:
Particularly, with reference to Fig. 1, while transparent display screen not being set between optical measuring device 2 and object of reference 1, measuring respectively object of reference 1 is the brightness L of the black part of Standard colour board
b1brightness L with white portion
w1, and calculate the now contrast of object of reference 1
while transparent display screen 3 being set between optical measuring device 2 and object of reference 1, use optical measuring device 2, measuring respectively according to thing 1 through transparent display screen 3 is the brightness L of the black part of Standard colour board
b2brightness L with white portion
w2, and calculate the now contrast of object of reference 1
Owing to being subject to the impact of the factors such as manufacturing process, measuring error and environmental interference, the brightness of measuring the zones of different of the black part of the Standard colour board of gained may be different, the brightness of the zones of different of white portion also may be different, therefore, in order to improve the accuracy of measurement result, the brightness of black part measured respectively by use optical measuring device 2 and the brightness of white portion can realize by the following method, comprising:
The brightness of zones of different of black part and the brightness of the zones of different of white portion that use optical measuring device 2 to measure object of reference 1, and draw brightness curve according to the each brightness value recording, with reference to Fig. 1, Fig. 2 and Fig. 4, Fig. 4 is brightness curve figure, the horizontal ordinate of brightness curve is the distance in the each measurement point of described Standard colour board and the x direction of initial point in Fig. 1 or Fig. 2, the brightness value that ordinate is each measurement point;
Calculate respectively the brightness of black part and the brightness of white portion, the mean value of each brightness value of the trough part that the brightness of black part is brightness curve, the brightness of white portion is the mean value that is positioned at each brightness value of the peak value part of brightness curve.
Be subject to manufacturing process, the impact of the factor such as measuring error and environmental interference, minimum value in the each brightness value of black part of the object of reference 1 measuring may be the extremum much smaller than other brightness values, maximal value in the each brightness value of white portion may be the extremum much larger than other brightness values, in order further to improve the accuracy of measurement result, can be using 110% of the minimum value of each brightness value of black part as minimum luminance value, calculate again the mean value of the each brightness value that is positioned at trough part, using each brightness value of white portion peaked 90% as maximum brightness value, calculate again the mean value of the each brightness value that is positioned at crest part.Thus, can carry out certain correction to the brightness value of measuring gained, avoid the appearance of extremum, thereby improved further the accuracy of measurement result.
Measure the contrast of object of reference 1 and all need described Standard colour board to carry out certain illumination owing to using optical measuring device 2 directly to measure the contrast of object of reference 1 and seeing through transparent display screen 3, the surperficial illumination of described Standard colour board directly affects measurement result, if the surperficial illumination of described Standard colour board is not fixed value, the factor that affects the contrast of transparent display screen 3 had both comprised that transparent display screen 3 also comprised the surperficial illumination of described Standard colour board, cause being difficult to accurately test out the impact of the contrast of transparent display screen 3 on object of reference 1, thereby the accuracy of impact test transparent display screen transparent effect, therefore, illumination that can described Standard colour board surface is set to fixed value, be for example 500Lux by the surperficial illuminance setting of described Standard colour board.
In the time using optical measuring device 2 to measure the contrast of object of reference 1 through transparent display screen 3, the GTG of transparent display screen 3 can be set to the arbitrary GTG in the middle of L0～L255, because the brightness of transparent display screen is higher, the transparent display screen of observing through transparent display screen object is below easier, the end, is got in the brightness of transparent display screen, the transparent display screen of observing through transparent display screen object is below more difficult, therefore, in the time using optical measuring device 2 to measure the contrast of object of reference 1 through transparent display screen 3, preferably the GTG of transparent display screen 3 is set to L255, thereby there is the contrast of being convenient to measure through transparent display screen 3 object of reference 1.
It should be noted that, not only in the time of the transparent effect of the same transparent display screen of test, illumination that can described Standard colour board surface is set to fixed value, in the time of the transparent effect of the different transparent display screens of test, also illumination that can described Standard colour board surface is set to fixed value, thereby is convenient to the transparent effect of different transparent display screens to compare and evaluate.
In the time using optical measuring device 2 to measure the contrast of object of reference 1 through transparent display screen 3, the color that transparent display screen 3 uses can be redness, green or blue.In the time of the transparent effect of the different transparent display screens of test, can be set to identical color by different transparent display screens, thereby be convenient to the transparent effect of different transparent display screens to compare and evaluate.
In the description of this instructions, specific features, structure, material or feature can be with suitable mode combinations in any one or more embodiment or example.
The above; be only the specific embodiment of the present invention, but protection scope of the present invention is not limited to this, any be familiar with those skilled in the art the present invention disclose technical scope in; can expect easily changing or replacing, within all should being encompassed in protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of described claim.
Claims (11)
1. an equipment of testing transparent display screen transparent effect, is characterized in that, comprising: optical measuring device and object of reference, described optical measuring device can directly be measured the brightness of described object of reference, or sees through the brightness that described transparent display screen is measured described object of reference.
2. the equipment of test transparent display screen transparent effect according to claim 1, is characterized in that, described optical measuring device is nitometer or imageing sensor.
3. the equipment of test transparent display screen transparent effect according to claim 2, is characterized in that, also comprises light source, and in the time measuring the brightness of described object of reference through described transparent display screen, described light source and described object of reference are positioned at described transparent display screen homonymy.
4. the equipment of test transparent display screen transparent effect according to claim 3, is characterized in that, the distance of described brightness measuring device for camera and described object of reference is fixed, and the distance of described light source and described object of reference and angle are all fixing.
5. the equipment of test transparent display screen transparent effect according to claim 3, is characterized in that, described light source is standard sources.
6. the equipment of test transparent display screen transparent effect according to claim 1, is characterized in that, described object of reference is Standard colour board, and described Standard colour board comprises black part and white portion.
7. a method that adopts the testing of equipment transparent display screen transparent effect described in any one in claim 1 to 6, is characterized in that, comprising:
Choose object of reference;
Use optical measuring device directly to measure the contrast C R of described object of reference
1;
Use described optical measuring device to measure the contrast C R of described object of reference through transparent display screen
2;
The transparent effect parameter T that calculates described transparent display screen, computing formula is:
Judge the transparent effect of described transparent display screen according to described transparent effect parameter T, described transparent effect parameter T is higher, and the transparent effect of described transparent display screen is better.
8. the method for test transparent display screen transparent effect according to claim 7, is characterized in that, described object of reference is Standard colour board, and described Standard colour board comprises black part and white portion, and the measuring method of the contrast C R of described object of reference is specially:
Use described optical measuring device to measure respectively the brightness L of described black part
bbrightness L with described white portion
w;
According to the brightness L of described black part
bbrightness L with described white portion
w, calculate the contrast C R of described object of reference, computing formula is:
9. the method for test transparent display screen transparent effect according to claim 8, is characterized in that, the brightness of described black part measured respectively by the described optical measuring device of described use and the brightness of described white portion comprises:
Measure the brightness of zones of different of described black part and the brightness of the zones of different of described white portion, and draw brightness curve according to the each brightness value recording;
Calculate the brightness of described black part and the brightness of described white portion, the brightness of described black part is the mean value of each brightness value of the trough part of described brightness curve, and the brightness of described white portion is the mean value that is positioned at each brightness value of the peak value part of described brightness curve.
10. the method for test transparent display screen transparent effect according to claim 9, is characterized in that, the brightness of the described black part of described calculating and the brightness of described white portion comprise:
Be arranged in each brightness value of trough part of described brightness curve, using the minimum value of described each brightness value 110% as minimum luminance value, be arranged in each brightness value of crest part of described brightness curve, using described each brightness value peaked 90% as maximum brightness value;
Calculating is positioned at the mean value of each brightness value of trough part, and calculates the mean value of the each brightness value that is positioned at crest part.
The method of 11. test transparent display screen transparent effects according to claim 8, is characterized in that, the illumination on described Standard colour board surface is fixed.
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| WO2017166796A1 (en) * | 2016-03-28 | 2017-10-05 | 京东方科技集团股份有限公司 | Detection method and detection device for definition of transparent display screen |
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| CN107702893B (en) * | 2017-05-26 | 2019-09-10 | 深圳市华星光电半导体显示技术有限公司 | Measure the method and system of transparent display transparent effect |
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