CN105444992A - Measurement method of curved surface display panel, measurement probe and measurement system - Google Patents
Measurement method of curved surface display panel, measurement probe and measurement system Download PDFInfo
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- CN105444992A CN105444992A CN201510824736.5A CN201510824736A CN105444992A CN 105444992 A CN105444992 A CN 105444992A CN 201510824736 A CN201510824736 A CN 201510824736A CN 105444992 A CN105444992 A CN 105444992A
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- measuring sonde
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- 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
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- 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
- G01M11/02—Testing optical properties
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- Length Measuring Devices By Optical Means (AREA)
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Abstract
The invention discloses a measurement method of a curved surface display panel, a measurement probe and a measurement system. The measurement method comprises steps of arranging the measurement probe above the curved surface display panel, obtaining a practical energy value of light going inside the measurement probe by the measurement probe, calculating a projection area of an incident light end surface of the measurement probe on the curved display panel, calculating a ratio of a practical energy value and the projection area, and multiplying the ratio and the practical area of the measurement probe light incident end surface to obtain the correction energy value of the light going into the measurement probe. Through the above arrangement, the invention can improve the accuracy of the measurement.
Description
Technical field
The present invention relates to display technique field, particularly relate to a kind of measuring method of curved face display panel, measuring sonde and measuring system.
Background technology
Compared with two-d display panel, the radian of curved face display panel can ensure that the distance of human eye is impartial, thus curved face display panel can bring sensory experience better.In addition, because curved face display panel bends to user slightly, can more be close to the users in its edge, and realizes substantially identical viewing and admiring angle with screen centre position, therefore the visual field of curved face display panel more extensively, can make user have better viewing effect.
Flexible displays, before dispatching from the factory, usually all needs to detect, such as, carries out the detection of lightness colors and other parameters of display, to guarantee the outgoing quality of flexible displays.In testing process, flexible displays is shown, then utilize measuring sonde to obtain the energy value entering light wherein that sends of flexible displays, and the energy value of the light of acquisition is converted to voltage signal is transferred to color analysis instrument.Color analysis instrument obtains the brightness of flexible displays, color and other parameter informations according to voltage signal, thus realizes the detection to flexible displays.
Existing metering system, in order to the consistance measured, is generally utilize the measuring sonde of measurement plane display to measure flexible displays.The light inlet end face of the measuring sonde of flat-panel screens is generally the planar rondure probe of homogeneity.Under normal circumstances, circular probe is in measuring process, and its energy of light obtained should be come from the light that the panel that is positioned at the projection with the projected area equally large with the area of its light inlet end face own sends.
But, when adopting circular probe to detect curved face display panel, the size of the geometric areas of the curved face display panel that circular probe measures changes, namely the projected area of the light inlet end face of circular probe on curved face display panel is no longer the area of circular probe light inlet end face itself, the energy entering the light of probe is relevant with the projected size of light inlet end face on curved face display panel of probe, projected area is larger, and the energy entering the light of measuring sonde is larger.Therefore, when the area of the projection of light inlet end face on curved face display panel of popping one's head in is different from the area of the light inlet end face of probe itself, change causing the gross energy of the light entering circular probe.Such as, as shown in Figure 1, the projection 12 of circular probe 11 on curved face display panel 13 is no longer circular, but become ellipticity, the area of the ellipticity projection 12 of circular probe on curved face display panel is greater than the area of circular probe light inlet end face itself, and the light that the curved face display panel being arranged in projection 12 sends all will enter circular probe, the gross energy of the light received by circular probe is increased, the gross energy of the light that probe receives increases will cause measurement result generation deviation, reduce the accuracy of measurement.
Summary of the invention
The technical matters that the present invention mainly solves is to provide a kind of measuring method of curved face display panel, measuring sonde and measuring system, can improve the accuracy of measurement result.
For solving the problems of the technologies described above, the technical scheme that the present invention adopts is: the measuring method providing a kind of curved face display panel, comprising: be placed in by measuring sonde above described curved face display panel; Described measuring sonde obtains the actual energy value of the light entered wherein; Calculate the projected area of light inlet end face on curved face display panel of described measuring sonde; Calculate the ratio of described actual energy value and described projected area; The corrective energy value of the light entering measuring sonde is obtained by the real area of measuring sonde light inlet end face described in described ratio product.
Wherein, the light inlet end face of described measuring sonde is circular flat; The step of the projected area of the described measuring sonde of described calculating on curved face display panel comprises: calculate described projected area according to following computing formula:
S′≈πr
2+πr
4/8R
2
Wherein, S ' is described projected area, and r is the radius of described measuring sonde light inlet end face, and R is the radius-of-curvature of described curved face display panel.
Wherein, described by measuring sonde, the step be placed in above described curved face display panel comprises: be placed in by described measuring sonde on the central point of described curved face display panel.
For solving the problems of the technologies described above, another technical solution used in the present invention is: the measuring sonde providing a kind of curved face display panel, comprise: acquiring unit, for obtaining the actual energy value entering the light of measuring sonde when being placed on described curved face display panel by described measuring sonde; First computing unit, for calculating the projected area of light inlet end face on curved face display panel of described measuring sonde; Second computing unit, for calculating the ratio of described actual energy value and described projected area; 3rd computing unit, for obtaining the corrective energy value of the light entering measuring sonde by the real area of measuring sonde light inlet end face described in described ratio product.
Wherein, the light inlet end face of described measuring sonde is circular flat; Described first computing unit is used for calculating described projected area according to following computing formula:
S′≈πr
2+πr
4/8R
2
Wherein, S ' is described projected area, and r is the radius of described measuring sonde light inlet end face, and R is the radius-of-curvature of described curved face display panel.
Wherein, described acquiring unit on the central point described measuring sonde being placed in described curved face display panel time obtain and enter the actual energy value of the light of measuring sonde.
For solving the problems of the technologies described above, another technical scheme that the present invention adopts is: the measuring system providing a kind of curved face display panel, comprises opertaing device, measuring sonde and color analysis equipment; Described opertaing device is used for measuring sonde to be placed in above curved face display panel; Described measuring sonde comprises: acquiring unit, for obtaining the actual energy value entering the light of measuring sonde when measuring sonde is placed in above curved face display panel by described opertaing device; First computing unit, for calculating the projected area of light inlet end face on curved face display panel of described measuring sonde; Second computing unit, for calculating the ratio of described actual energy value and described projected area; 3rd computing unit, for obtaining the corrective energy value of the light entering measuring sonde by the real area of measuring sonde light inlet end face described in described ratio product; Described color analysis equipment is used for the parameter value detecting described curved face display panel according to described corrective energy value.
Wherein, the light inlet end face of described measuring sonde is circular flat; Described first computing unit is used for calculating described projected area according to following computing formula:
S′≈πr
2+πr
4/8R
2
Wherein, S ' is described projected area, and r is the radius of described measuring sonde light inlet end face, and R is the radius-of-curvature of described curved face display panel.
Wherein, described acquiring unit on the central point described measuring sonde being placed in described curved face display panel time obtain and enter the actual energy value of the light of measuring sonde.
Wherein, the light inlet end face of described measuring sonde curved shape at least in one direction.
The invention has the beneficial effects as follows: the situation being different from prior art, in measuring method of the present invention, first measuring sonde obtains the actual energy value of the light entered wherein, the projected area of light inlet end face on curved face display panel of being popped one's head in by computation and measurement, and calculate the ratio of actual energy value and projected area, thus obtain the energy value of the light in unit area, by the real area of this ratio product measuring sonde light inlet end face, thus obtain the corrective energy value of the light entering measuring sonde, the energy value of the light that the region with the area identical with the real area of measuring sonde light inlet end face that this corrective energy value is curved face display panel sends, realize the rectification of the energy value to the light entered in measuring sonde thus, the accuracy of measurement can be improved.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the projection of a kind of measuring sonde on curved face display panel in prior art;
Fig. 2 is the process flow diagram of measuring method one embodiment of curved face display panel of the present invention;
Fig. 3 is the structural representation of measuring sonde one embodiment of curved face display panel of the present invention;
Fig. 4 is the structural representation that the Department of Survey of curved face display panel of the present invention unifies embodiment.
Embodiment
Below in conjunction with drawings and embodiments, the present invention is described in detail.
Consult Fig. 2, in measuring method one embodiment of curved face display panel of the present invention, comprise the steps:
Step S201: measuring sonde is placed in above curved face display panel.Wherein, be first placed on curved face display panel by the light inlet end face of measuring sonde, light enters measuring sonde from light inlet end face.
Step S202: measuring sonde obtains the actual energy value of the light entered wherein.The light that can enter measuring sonde is the light that the curved face display panel of the projection being positioned at measuring sonde light inlet end face sends, and therefore, actual energy value refers to the energy value of the light that the curved face display panel of the projection being positioned at measuring sonde light inlet end face sends.
Step S203: the projected area of light inlet end face on curved face display panel of computation and measurement probe.
The real area of light inlet end face refers to the size of the light inlet end face of measuring sonde itself.The projected area of light inlet end face on curved face display panel (i.e. the area of the projection of light inlet end face on curved face display panel) of measuring sonde may be inconsistent with the real area of light inlet end face, therefore calculates the projected area of light inlet end face on curved face display panel of measuring sonde.
Step S204: the ratio calculating actual energy value and projected area.Actual energy value is the energy value of the light that the curved face display panel of the projection being positioned at measuring sonde light inlet end face sends, by calculating the ratio of the projected area of light inlet end face on curved face display panel of actual energy value and measuring sonde, the energy value of the light in unit area can be obtained thus.
Step S205: the corrective energy value obtaining the light entering measuring sonde by the real area of ratio product measuring sonde light inlet end face.By the energy value of the light in unit of account area, thus by the real area of the energy value product light inlet end face of the light in this unit area, the energy value of the light that the region with the area identical with the real area of measuring sonde light inlet end face that can obtain curved face display panel sends, namely be equivalent to obtain the energy value of the light that the curved face display panel that is positioned at the projection with the projected area identical with the real area of light inlet end face sends, this energy value is corrective energy value.Detect the parameter value of curved face display panel according to this corrective energy value thus, compared with carrying out with the actual energy value of the existing light utilizing measuring sonde to obtain the mode that detects, the accuracy of measurement can be improved.
In the embodiment of the measuring method of curved face display panel of the present invention, the light inlet end face of measuring sonde is circular flat, and namely measuring sonde is circular probe.Wherein, in step S203, the step of the projected area of computation and measurement probe on curved face display panel comprises: the projected area of light inlet end face on curved face display panel according to following computing formula computation and measurement probe:
S′≈πr
2+πr
4/8R
2
Wherein, the projected area of light inlet end face on curved face display panel that S ' is measuring sonde, r is the radius of measuring sonde light inlet end face, and R is the radius-of-curvature of curved face display panel.By above-mentioned formula, the radius r of input measurement probe light inlet end face and the radius of curvature R of curved face display panel is only needed to calculate projected area.By the way, the accuracy that curved face display panel is measured can not only be improved, and cross employing circular probe, circular probe can be made both to be applicable to two-d display panel and also can be applicable to curved face display panel, improve usable range.
Wherein, by measuring sonde, the step be placed in above curved face display panel comprises: be placed on the central point of curved face display panel by measuring sonde.Place even if the central point of the light inlet end face of measuring sonde is corresponding with the central point of curved face display panel, to be detected the parameter value of curved face display panel by the light measurement of the center position to curved face display panel.
Certainly, in other embodiments, also can using other positions on curved face display panel as test point, making that the central point of measuring sonde is corresponding with other test points to be placed, detecting the parameter value of curved face display panel with the light by measuring other positions.Wherein, line coincident between test point on the center of circle (center of circle of radius-of-curvature) of the line of the test point on the central point of the light inlet end face of measuring sonde and curved face display panel such as between central point and curved face display panel and curved face display panel, namely on same straight line.
In addition, in embodiments of the present invention, measuring sonde also can be arc shape probe, i.e. its light inlet end face curved shape at least in one direction.When the projected area of its light inlet end face on curved face display panel changes, can correct according to the energy of said method to the light entering measuring sonde equally, to obtain corrective energy value, and then detect according to the parameter value of corrective energy value to curved face display panel, be conducive to improving the accuracy measured.
Consult Fig. 3, in an embodiment of the measuring sonde of curved face display panel of the present invention, the measuring method that measuring sonde can be used for according to the respective embodiments described above detects curved face display panel.Measuring sonde comprises acquiring unit 301, first computing unit 302, second computing unit 303 and the 3rd computing unit 304.
Wherein, acquiring unit 301 is for obtaining the actual energy value entering the light of measuring sonde when being placed on curved face display panel by measuring sonde.In present embodiment, the light inlet end face of measuring sonde is circular flat.The central point of light inlet end face of measuring sonde is corresponding with the position of the central point of curved face display panel, acquiring unit 301 for obtain from the central point of curved face display panel and near the actual energy value entering the light of measuring sonde that sends.
Wherein, the light that can enter measuring sonde is the light that the curved face display panel of the projection being positioned at measuring sonde light inlet end face sends, and therefore, actual energy value refers to the energy value of the light that the curved face display panel of the projection being positioned at measuring sonde light inlet end face sends.
The projected area of light inlet end face on curved face display panel that first computing unit 302 is popped one's head in for computation and measurement.Wherein, the first computing unit 302 is for the projected area of light inlet end face on curved face display panel according to following computing formula computation and measurement probe:
S′≈πr
2+πr
4/8R
2
Wherein, the projected area of light inlet end face on curved face display panel that S ' is measuring sonde, r is the radius of measuring sonde light inlet end face, and R is the radius-of-curvature of curved face display panel.By above-mentioned formula, the radius r only needing input measurement to pop one's head in and the radius of curvature R of curved face display panel can calculate projected area.
Second computing unit 303 is for calculating the ratio of actual energy value and projected area.Actual energy value is the energy value of the light that the curved face display panel of the projection being positioned at measuring sonde light inlet end face sends, by calculating the ratio of the projected area of light inlet end face on curved face display panel of actual energy value and measuring sonde, the energy value of the light in unit area can be obtained thus.
3rd computing unit 304 obtains the corrective energy value of the light entering measuring sonde for the real area of the light inlet end face with described ratio product measuring sonde.By the energy value of the light in unit of account area, thus by the real area of the energy value product light inlet end face of the light in this unit area, the energy value of the light that the region with the area identical with the real area of measuring sonde light inlet end face that can obtain curved face display panel sends, namely be equivalent to obtain the energy value of the light that the curved face display panel that is positioned at the projection with the projected area identical with the real area of light inlet end face sends, this energy value is corrective energy value.
Wherein, measuring sonde also comprises converting unit 305, converting unit 305 is for being converted to voltage signal by corrective energy value, and voltage signal is exported to color analysis equipment, to make color analysis equipment detect the brightness of curved face display panel, color and other parameter values according to corrective energy value, thus realize the detection to curved face display panel.By the way, detect the parameter value of curved face display panel according to this corrective energy value, compared with carrying out with the actual energy value of the existing light utilizing measuring sonde to obtain the mode that detects, the accuracy of measurement can be improved.
Certainly, in other embodiments, measuring sonde also can be arc shape probe, i.e. its light inlet end face curved shape at least in one direction.Arc shape is popped one's head in, when the projected area of its light inlet end face on curved face display panel changes, above-mentioned acquiring unit, the first computing unit, the second computing unit and the energy of the 3rd computing unit to the light entering measuring sonde can be utilized equally to correct, to obtain corrective energy value, and then detect according to the parameter value of corrective energy value to curved face display panel, be conducive to improving the accuracy measured.
Consult Fig. 4, in the measuring system of curved face display panel of the present invention, measuring system comprises opertaing device 401, measuring sonde 402 and color analysis equipment 403.
Wherein, opertaing device 401 is for being placed in measuring sonde 402 above curved face display panel.Particularly, opertaing device 401 is placed in the center position of curved face display panel for the central point of the light inlet end face by measuring sonde 402.
Measuring sonde 402 comprises acquiring unit 4021, first computing unit 4022, second computing unit 4023, the 3rd computing unit 4024 and converting unit 4025.
Wherein, acquiring unit 4021 is for obtaining the actual energy value entering the light of measuring sonde when measuring sonde is placed on curved face display panel by opertaing device 401.In present embodiment, the light inlet end face of measuring sonde is circular flat.The central point of light inlet end face of measuring sonde is corresponding with the position of the central point of curved face display panel, acquiring unit 4021 for obtain from the central point of curved face display panel and near the actual energy value entering the light of measuring sonde that sends.
Wherein, the light that can enter measuring sonde is the light that the curved face display panel of the projection being positioned at measuring sonde light inlet end face sends, and therefore, actual energy value refers to the energy value of the light that the curved face display panel of the projection being positioned at measuring sonde light inlet end face sends.
The projected area of light inlet end face on curved face display panel that first computing unit 4022 is popped one's head in for computation and measurement.Wherein, the first computing unit 4022 is for the projected area of light inlet end face on curved face display panel according to following computing formula computation and measurement probe:
S′≈πr
2+πr
4/8R
2
Wherein, the projected area of light inlet end face on curved face display panel that S ' is measuring sonde, r is the radius of measuring sonde light inlet end face, and R is the radius-of-curvature of curved face display panel.By above-mentioned formula, the radius r only needing input measurement to pop one's head in and the radius of curvature R of curved face display panel can calculate projected area.
Second computing unit 4023 is for calculating the ratio of actual energy value and projected area.Actual energy value is the energy value of the light that the curved face display panel of the projection being positioned at measuring sonde light inlet end face sends, by calculating the ratio of the projected area of light inlet end face on curved face display panel of actual energy value and measuring sonde, the energy value of the light in unit area can be obtained thus.
3rd computing unit 4024 obtains the corrective energy value of the light entering measuring sonde for the real area of the light inlet end face with described ratio product measuring sonde.By the energy value of the light in unit of account area, thus by the real area of the energy value product light inlet end face of the light in this unit area, the energy value of the light that the region with the area identical with the real area of measuring sonde light inlet end face that can obtain curved face display panel sends, namely be equivalent to obtain the energy value of the light that the curved face display panel that is positioned at the projection with the projected area identical with the real area of light inlet end face sends, this energy value is corrective energy value.
Wherein, measuring sonde also comprises converting unit 4025, and voltage signal for corrective energy value is converted to voltage signal, and is exported to color analysis equipment 43 by converting unit 4025.Color analysis equipment 43 detects the brightness of curved face display panel, color and other parameter values according to corrective energy value, thus realizes the detection to curved face display panel.By the way, detect the parameter value of curved face display panel according to this corrective energy value, compared with carrying out with the actual energy value of the existing light utilizing measuring sonde to obtain the mode that detects, the accuracy of measurement can be improved.
Certainly, in other embodiments, measuring sonde also can be arc shape probe, i.e. its light inlet end face curved shape at least in one direction.Arc shape is popped one's head in, when the projected area of its light inlet end face on curved face display panel changes, above-mentioned acquiring unit, the first computing unit, the second computing unit and the energy of the 3rd computing unit to the light entering measuring sonde can be utilized equally to correct, to obtain corrective energy value, and then detect according to the parameter value of corrective energy value to curved face display panel, be conducive to improving the accuracy measured.
Certainly, in other embodiments, converting unit also can be integrated in color analysis equipment.
The foregoing is only embodiments of the present invention; not thereby the scope of the claims of the present invention is limited; every utilize instructions of the present invention and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (10)
1. a measuring method for curved face display panel, is characterized in that, comprising:
Measuring sonde is placed in above described curved face display panel;
Described measuring sonde obtains the actual energy value of the light entered wherein;
Calculate the projected area of light inlet end face on curved face display panel of described measuring sonde;
Calculate the ratio of described actual energy value and described projected area;
The corrective energy value of the light entering measuring sonde is obtained by the real area of measuring sonde light inlet end face described in described ratio product.
2. method according to claim 1, is characterized in that, the light inlet end face of described measuring sonde is circular flat;
The step of the projected area of the described measuring sonde of described calculating on curved face display panel comprises:
Described projected area is calculated according to following computing formula:
S'≈πr
2+πr
4/8R
2
Wherein, S ' is described projected area, and r is the radius of described measuring sonde light inlet end face, and R is the radius-of-curvature of described curved face display panel.
3. method according to claim 2, is characterized in that, described by measuring sonde, the step be placed in above described curved face display panel comprises: be placed in by described measuring sonde on the central point of described curved face display panel.
4. a measuring sonde for curved face display panel, is characterized in that, comprising:
Acquiring unit, for obtaining the actual energy value entering the light of measuring sonde when being placed on described curved face display panel by described measuring sonde;
First computing unit, for calculating the projected area of light inlet end face on curved face display panel of described measuring sonde;
Second computing unit, for calculating the ratio of described actual energy value and described projected area;
3rd computing unit, for obtaining the corrective energy value of the light entering measuring sonde by the real area of measuring sonde light inlet end face described in described ratio product.
5. measuring sonde according to claim 4, is characterized in that, the light inlet end face of described measuring sonde is circular flat;
Described first computing unit is used for calculating described projected area according to following computing formula:
S'≈πr
2+πr
4/8R
2
Wherein, S ' is described projected area, and r is the radius of described measuring sonde light inlet end face, and R is the radius-of-curvature of described curved face display panel.
6. measuring sonde according to claim 5, is characterized in that, described acquiring unit on the central point described measuring sonde being placed in described curved face display panel time obtain and enter the actual energy value of the light of measuring sonde.
7. a measuring system for curved face display panel, is characterized in that, comprises opertaing device, measuring sonde and color analysis equipment;
Described opertaing device is used for measuring sonde to be placed in above curved face display panel;
Described measuring sonde comprises:
Acquiring unit, for obtaining the actual energy value entering the light of measuring sonde when measuring sonde is placed in above curved face display panel by described opertaing device;
First computing unit, for calculating the projected area of light inlet end face on curved face display panel of described measuring sonde;
Second computing unit, for calculating the ratio of described actual energy value and described projected area;
3rd computing unit, for obtaining the corrective energy value of the light entering measuring sonde by the real area of measuring sonde light inlet end face described in described ratio product;
Described color analysis equipment is used for the parameter value detecting described curved face display panel according to described corrective energy value.
8. measuring system according to claim 7, is characterized in that, the light inlet end face of described measuring sonde is circular flat;
Described first computing unit is used for calculating described projected area according to following computing formula:
S'≈πr
2+πr
4/8R
2
Wherein, S ' is described projected area, and r is the radius of described measuring sonde light inlet end face, and R is the radius-of-curvature of described curved face display panel.
9. measuring system according to claim 8, is characterized in that, described acquiring unit on the central point described measuring sonde being placed in described curved face display panel time obtain and enter the actual energy value of the light of measuring sonde.
10. measuring system according to claim 7, is characterized in that, the light inlet end face curved shape at least in one direction of described measuring sonde.
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| CN109655230A (en) * | 2017-10-12 | 2019-04-19 | 日本麦可罗尼克斯股份有限公司 | Display panel check device and display panel inspection method |
| CN109949728A (en) * | 2019-04-24 | 2019-06-28 | 苏州华兴源创科技股份有限公司 | A kind of detection device of display panel |
| CN111665021A (en) * | 2020-06-04 | 2020-09-15 | 昆山国显光电有限公司 | Method and device for testing brightness uniformity of display panel |
| CN112268686A (en) * | 2020-10-22 | 2021-01-26 | 合肥维信诺科技有限公司 | Method and device for measuring optical parameters of curved screen |
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| CN112268686A (en) * | 2020-10-22 | 2021-01-26 | 合肥维信诺科技有限公司 | Method and device for measuring optical parameters of curved screen |
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