CN111735392A - Flexible display panel and flattening degree test method thereof - Google Patents
Flexible display panel and flattening degree test method thereof Download PDFInfo
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- CN111735392A CN111735392A CN202010600656.2A CN202010600656A CN111735392A CN 111735392 A CN111735392 A CN 111735392A CN 202010600656 A CN202010600656 A CN 202010600656A CN 111735392 A CN111735392 A CN 111735392A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/30—Measuring arrangements characterised by the use of optical techniques for measuring roughness or irregularity of surfaces
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
- G09F9/301—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements flexible foldable or roll-able electronic displays, e.g. thin LCD, OLED
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/549—Organic PV cells
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Abstract
The invention discloses a flexible display panel and a flatness testing method thereof. The flexible display panel comprises a bending area and a non-bending area, and the flattening degree test method of the flexible display panel comprises the following steps: obtaining test data after the flexible display panel is bent for a preset number of times, wherein the test data comprises a plurality of non-flattened area coordinates and a plurality of flattened area coordinates; and calculating the crease width and the flatness of the flexible display panel according to the test data. The flattening degree testing method can realize quantification of bending performance of the flexible display panel.
Description
Technical Field
The embodiment of the invention relates to the technical field of display, in particular to a flexible display panel and a flatness testing method thereof.
Background
The flexible display panel has low power consumption, can be bent and the like, and is widely applied to folding mobile phones and wearable intelligent equipment.
When the flexible display panel is applied to the folding module structure, it is fixed on the hinge structure. The process that the flexible display panel is folded inwards or outwards and then unfolded is used as a bending process, the flexible display panel can only be bent and cannot be extended when being bent, and the bending area of the flexible display panel can have the phenomenon of unevenness (such as creases) along with the increase of the bending times of the flexible display panel. At present, human eyes are mostly used to determine whether a folding line appears in a bending area, so a method for quantifying the flattening degree of a flexible display panel is urgently needed.
Disclosure of Invention
The invention provides a flexible display panel and a method for testing the flattening degree of the flexible display panel, which can realize the quantification of the bending performance of the flexible display panel.
In a first aspect, an embodiment of the present invention provides a method for testing a flatness of a flexible display panel, where the flexible display panel includes a bending region and a non-bending region, and the method includes:
obtaining test data after the flexible display panel is bent for a preset number of times, wherein the test data comprises a plurality of non-flattened area coordinates and a plurality of flattened area coordinates;
and calculating the crease width and the flatness of the flexible display panel according to the test data.
Optionally, the method for testing the flatness of the flexible display panel may further include:
and reading N non-flattening area coordinates in the non-flattening area by using a three-dimensional measuring instrument, and reading M flattening area coordinates in the flattening area, wherein the non-flattening area comprises a bending area and a non-bending area partially adjacent to the bending area, and the flattening area comprises other areas of the flexible display panel except the non-flattening area.
Optionally, the N non-flattened area coordinates have the same value on the X axis and are uniformly distributed on the Y axis, where N is [ (L1/D) × a ];
the values of the M flattened area coordinates on the X axis are the same as the values of the N non-flattened area coordinates on the X axis, the M flattened area coordinates are uniformly distributed on the Y axis, the distance between the two adjacent flattened area coordinates on the Y axis is more than or equal to 0.1X L2, and [ ] represents the rounding;
l1 is the length of the bending region parallel to the bending axis, D ═ pi (R + b ×) T, R is the bending radius of the bending region, T is the screen thickness of the flexible display panel, b is the empirical coefficient, a is a positive integer, and L2 is the length of the flexible display panel perpendicular to the bending axis;
preferably, b has a value of 0.318 and a has a value of 2.
Optionally, the method for testing the flatness of the flexible display panel includes:
determining a crease boundary according to the values of the N non-flattening area coordinates and the M flattening area coordinates on the Z axis;
and calculating the crease width of the flexible display panel according to the crease boundary.
Optionally, the method for testing the flatness of the flexible display panel includes:
and determining the flatness according to the values of the N non-flattening area coordinates and the M flattening area coordinates on the Z axis, wherein the flatness is obtained by subtracting the value of any one of the M flattening area coordinates on the Z axis from the maximum value of the N non-flattening area coordinates on the Z axis.
Optionally, the method for testing the flatness of the flexible display panel may further include:
and shooting the flexible display panel by using an optical image measuring instrument to acquire test data.
Optionally, the method for testing the flatness of the flexible display panel may further include:
acquiring reference data of the flexible display panel before bending for preset times;
and comparing the reference data with the test data, and calculating the crease width and the flatness of the flexible display panel.
The method for testing the flatness of the flexible display panel optionally further includes:
judging whether the width of the crease is less than or equal to the standard width and the flatness is less than or equal to the standard flatness;
if so, the flatness test of the flexible display panel is qualified.
Optionally, the standard width is pi (R + b T), R is a bending radius of the bending region, T is a screen thickness of the flexible display panel, and b is an empirical coefficient;
preferably, b has a value of 0.318;
preferably, the standard flatness is 0.05 mm.
In a second aspect, an embodiment of the present invention further provides a flexible display panel, where the flexible display panel is tested for flatness by using the method for testing flatness of the flexible display panel having any of the features of the first aspect.
The invention provides a flexible display panel and a method for testing the flattening degree of the flexible display panel.
Drawings
Fig. 1 is a schematic flowchart of a method for testing a flatness of a flexible display panel according to an embodiment of the present invention;
fig. 2 is a schematic top view of a flexible display panel according to an embodiment of the present invention;
fig. 3 is a schematic cross-sectional view of a flexible display panel according to an embodiment of the present invention;
fig. 4 is a schematic top view of another flexible display panel according to an embodiment of the present invention;
fig. 5 is a schematic top view of another flexible display panel according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
Also, the drawings and description of the embodiments are to be regarded as illustrative in nature, and not as restrictive. Like reference numerals refer to like elements throughout the specification. In addition, the thickness of some layers, films, panels, regions, etc. may be exaggerated in the drawings for understanding and ease of description. It will also be understood that when an element such as a layer, film, region, or substrate is referred to as being "on" another element, it can be directly on the other element or intervening elements may also be present. In addition, "on … …" means that an element is positioned on or under another element, but does not essentially mean that it is positioned on the upper side of the other element according to the direction of gravity. For ease of understanding, the figures of the present invention depict one element on top of another.
Additionally, unless explicitly described to the contrary, the word "comprise", and variations such as "comprises" or "comprising", will be understood to imply the inclusion of stated elements but not the exclusion of any other elements.
It should also be noted that references to "and/or" in embodiments of the invention are intended to include any and all combinations of one or more of the associated listed items. Various components are described in embodiments of the present invention with "first", "second", "third", and the like, but these components should not be limited by these terms. These terms are only used to distinguish one component from another. Also, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
While certain embodiments may be practiced differently, the specific process sequence may be performed differently than described. For example, two processes described consecutively may be performed at substantially the same time or in an order reverse to that described.
In addition, the following embodiments are all exemplified by the case where the display panel is rectangular, and in practical applications, the display panel may be in a regular or irregular shape such as a circle, a polygon, and the like, and the present invention is not particularly limited thereto. Meanwhile, in order to describe the routing in the display panel more clearly, the following drawings in the embodiments of the present invention correspondingly adjust the size of each structure in the display panel.
Fig. 1 is a schematic flowchart illustrating a method for testing a flatness of a flexible display panel according to an embodiment of the present invention, where as shown in fig. 1, the method includes:
s101, obtaining test data after the flexible display panel is bent for a preset number of times, wherein the test data comprises a plurality of non-flattening area coordinates and a plurality of flattening area coordinates.
And S102, calculating the crease width and the flatness of the flexible display panel according to the test data.
The method can be mainly divided into any one of the following two methods according to different used test devices:
according to the method I, when the used test equipment is a three-dimensional measuring instrument, the three-dimensional measuring instrument can directly acquire test data, and the crease width and the flattening degree of the flexible display panel are calculated through the test data;
and secondly, when the used testing equipment is the optical image measuring instrument, the optical image measuring instrument can shoot the image of the flexible display panel, obtain the testing data from the image and calculate the crease width and the flatness of the flexible display panel according to the testing data.
The two methods can calculate the crease width and the flattening degree of the flexible display panel, and quantify the bending performance of the flexible display panel through the crease width and the flattening degree, so that the standardized detection of the bending performance of the flexible display panel is facilitated.
Hereinafter, the two methods for measuring the flatness and the technical effects thereof will be described in detail.
When the testing device used is a three-dimensional measuring instrument, fig. 2 shows a schematic top view structure of a flexible display panel according to an embodiment of the present invention. As shown in fig. 2, the flexible display panel includes a bending region 10 and a non-bending region 11, wherein the non-bending region 11 is adjacent to the bending region 10 (fig. 2 illustrates an example in which one non-bending region 11 is disposed on each of the left and right sides of the bending region 10).
First, the flexible display panel is placed on a bending device to be bent for a preset number of times, where the preset number of times may be set according to actual needs, such as 1000 times, 10000 times, 50000 times, 100000 times, and the like. For one flexible display panel, multiple tests may be performed. That is, one flexible display panel corresponds to a plurality of bending time check points, and when the bending time of the flexible display panel reaches one bending time check point, the flattening degree test of the embodiment of the invention is performed once.
After the flexible display panel is bent for the preset times, the flexible display panel is fixed by using an auxiliary fixing jig and placed on a three-dimensional measuring instrument in a vacuum adsorption mode and the like. The three-dimensional measuring instrument is used for taking points on the flexible display panel and obtaining coordinates of each point, wherein the coordinates comprise a plurality of non-flattened area coordinates and a plurality of flattened area coordinates.
Specifically, as shown in fig. 2, the non-flattened region 20 includes the bending region 10 and the non-bending region 11 partially adjacent to the bending region 10, and the flattened region 21 includes other regions of the flexible display panel except for the non-flattened region 20. The range of the non-flattening area 20 is slightly larger than the bending area 10 to prevent the non-bending area 11 adjacent to the bending area 10 from being deformed after the flexible display panel is bent for multiple times, so that a certain margin is reserved, and points are taken by using the same rule as the bending area 10 to ensure the accuracy of the measurement result. The step of taking points on the flexible display panel by the three-dimensional measuring instrument can be divided into the following two steps:
step 1, a three-dimensional measuring instrument obtains N points in a non-flattened area and reads the non-flattened area coordinates of the N points; and 2, acquiring M points in the flattening area by the three-dimensional measuring instrument, and reading the coordinates of the flattening area of the M points.
The values of the N non-flattened area coordinates (in fig. 2, 9 non-flattened area coordinates are taken as an example for drawing, and are respectively labeled as a1, a2, … and a9) on the X axis are the same, and the values of the M flattened area coordinates (in fig. 2, 6 flattened area coordinates are taken as an example for drawing, and are respectively labeled as B1, B2, … and B6) on the X axis are the same as those of the N non-flattened area coordinates on the X axis.
N points acquired in the non-flattening area are uniformly distributed on the Y axis, and the value of the number of N is [ (L1/D) × a ]; where L1 is the length of the bending region parallel to the bending axis, D ═ pi (R + b ×) T, R is the bending radius of the bending region, T is the screen thickness of the flexible display panel, b is the empirical coefficient, a is a positive integer, [ ] indicates rounding (including but not limited to round-up, round-down, and round-down). It can be understood that the more the number of the sampling points is, the more accurate the measurement result is, and in order to consider the measurement accuracy and the calculation complexity, in an embodiment, the value of b is 0.318, and the value of a is 2.
The M points acquired in the flattening areas are also uniformly distributed on the Y axis, and the distance between the coordinates of two adjacent flattening areas on the Y axis is greater than or equal to 0.1L 2, wherein L2 is the length of the flexible display panel perpendicular to the bending axis.
It should be added that the above-mentioned point-taking step (i.e. the three-dimensional meter obtains N points in the non-flattened area and M points in the flattened area) obtains a set of test data, and in one flattening test, the three-dimensional meter can obtain multiple sets of test data simultaneously, for example, another set of B1 'point-B6' point above B1 point-B6 point shown in fig. 2, another set of a1 'point-a 9' point above a1 point-a 9 point, and another set of B1 "point-B6" point below B1 point-B6 point shown in fig. 2, and another set of a1 "point-a 9" point above a1 point-a 9 point. Therefore, the crease width and the flattening degree of the flexible display panel can be calculated by adopting the following method for each group of test data, so that the finally obtained result is more accurate and has reference.
Taking a crease of the flexible display panel as a convex surface as an example, fig. 3 shows a schematic cross-sectional structure diagram of the flexible display panel provided by the embodiment of the invention. As shown in fig. 3, after the coordinates of each point are obtained, the three-dimensional measuring instrument may calculate the fold width and the flatness of the flexible display panel respectively.
Specifically, the method for calculating the crease width of the flexible display panel comprises the following steps: and determining a crease boundary according to the values of the N non-flattening area coordinates and the M flattening area coordinates on the Z axis, wherein the crease boundary is obtained by comparing the values of the N non-flattening area coordinates and the M flattening area coordinates on the Z axis, namely two boundaries with minimum deformation of the flexible display panel, such as positions corresponding to the point A1 and the point A9 in the graph 3. And calculating the crease width of the flexible display panel according to the crease boundary, wherein the crease width is the distance from the point A1 to the point A9, namely subtracting the value of the point A1 on the Y axis from the value of the point A9 on the Y axis.
The method for calculating the flatness of the flexible display panel comprises the following steps: and determining the flatness according to the values of the N non-flattening area coordinates and the M flattening area coordinates on the Z axis, wherein the flatness is obtained by subtracting the value of any one of the M flattening area coordinates on the Z axis from the maximum value of the N non-flattening area coordinates on the Z axis, and the value of any one of the M flattening area coordinates on the Z axis is selected because the values of the M flattening area coordinates on the Z axis are the same. Such as subtracting the value of point B1 from the value of point a5 on the Z-axis in fig. 3. It should be noted that, if the horizontal plane of the flexible display panel is used as the Z-axis reference plane (that is, the values of the M flattened area coordinates on the Z-axis are 0), the flattening degree is the maximum value of the N non-flattened area coordinates on the Z-axis, so that the calculation difficulty can be reduced.
After calculating the crease width and the flattening degree of the flexible display panel, whether the bending characteristic of the flexible display panel is qualified or not can be judged by utilizing the crease width and the flattening degree: judging whether the width of the crease is less than or equal to the standard width and the flatness is less than or equal to the standard flatness; if so, the flatness test of the flexible display panel is qualified. The standard width is pi (R + b T), R is the bending radius of the bending area, T is the screen thickness of the flexible display panel, and b is an empirical coefficient.
In one embodiment, b is 0.318; the standard flatness was found to be 0.05 mm.
When the used testing device is an optical image measuring instrument, firstly, the flexible display panel is fixed by using the auxiliary fixing jig, and is placed on the optical image measuring instrument by adopting a vacuum adsorption mode and the like, the optical image measuring instrument shoots an image of the flexible display panel before bending for a preset number of times, and acquires reference data from the image before bending, wherein a point-taking mode of the reference data can be referred to the above embodiment. As shown in fig. 4. Fig. 4 is a schematic top view illustrating another flexible display panel according to an embodiment of the present invention. As shown in fig. 4, the flexible display panel includes a bending region 10 and a non-bending region 11, wherein the non-bending region 11 is adjacent to the bending region 10 (fig. 4 illustrates an example in which one non-bending region 11 is disposed on each of the left and right sides of the bending region 10). And storing the standard data of the flexible display panel before bending for preset times in the optical image measuring instrument for later use.
Subsequently, the flexible display panel is placed on a bending device to be bent for a preset number of times, where the preset number of times can be set according to actual needs, such as 1000 times, 10000 times, 50000 times, 100000 times, and the like. For one flexible display panel, multiple tests may be performed. That is, one flexible display panel corresponds to a plurality of bending time check points, and when the bending time of the flexible display panel reaches one bending time check point, the flattening degree test of the embodiment of the invention is performed once.
After the flexible display panel is bent for the preset times, the auxiliary fixing jig is used again to fix the flexible display panel, the flexible display panel is placed on the optical image measuring instrument in a vacuum adsorption mode, the optical image measuring instrument shoots the image of the bent flexible display panel and obtains test data from the image, and the point of the test data is overlapped with the point of the reference data to ensure the accuracy of the test. As shown in fig. 5. Fig. 5 is a schematic top view illustrating a flexible display panel according to an embodiment of the present invention. As shown in fig. 5, the flexible display panel includes a bending region 10 and a non-bending region 11, where the non-bending region 11 is adjacent to the bending region 10 (for example, one non-bending region 11 is disposed on each of the left and right sides of the bending region 10 in fig. 5), and a fold of the flexible display panel is shown by a dotted line in fig. 5.
After obtaining the reference data of the flexible display panel before bending for the preset times and the test data of the flexible display panel after bending for the preset times, the optical image measuring instrument can respectively calculate the crease width and the flatness of the flexible display panel.
Specifically, the method for calculating the crease width of the flexible display panel comprises the following steps: and comparing the reference data with the test data, and calculating the crease width and the flatness of the flexible display panel.
The invention provides a method for testing the flattening degree of a flexible display panel, which comprises the following steps: after the flexible display panel is bent for a preset number of times, obtaining test data, wherein the test data comprises a plurality of non-flattened area coordinates and a plurality of flattened area coordinates; and calculating the crease width and the flatness of the flexible display panel according to the test data. After the flexible display panel is bent for the preset times, the bending performance of the flexible display panel is quantified through the crease width and the flattening degree by collecting test data and calculating the crease width and the flattening degree of the flexible display panel by utilizing the test data, so that the standardized detection of the bending performance of the flexible display panel is facilitated.
The embodiment of the invention also provides a flexible display panel, and the flexible display panel is subjected to the flatness test by adopting the method for testing the flatness of the flexible display panel described in the embodiment. The type of the flexible display panel may be any one of display panels such as an Organic Light-Emitting Diode (OLED) display panel, an In-plane switching (IPS) display panel, a Twisted Nematic (TN) display panel, a Vertical Alignment (VA) display panel, electronic paper, a Quantum Dot Light Emitting (QLED) display panel, or a micro LED (micro Light Emitting Diode, μ LED) display panel, which is not particularly limited In this respect. The light emitting mode of the flexible display panel may be top emission, bottom emission, or dual emission.
The flexible display panel can also be packaged in a display device, and the display device can be applied to intelligent wearable equipment (such as an intelligent bracelet and an intelligent watch) and also can be applied to equipment such as a smart phone, a tablet personal computer and a display.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (10)
1. A method for testing the flatness of a flexible display panel, wherein the flexible display panel comprises a bending area and a non-bending area, is characterized by comprising the following steps:
after the flexible display panel is bent for a preset number of times, obtaining test data, wherein the test data comprises a plurality of non-flattened area coordinates and a plurality of flattened area coordinates;
and calculating the crease width and the flatness of the flexible display panel according to the test data.
2. The method of claim 1, wherein the obtaining test data comprises:
reading N non-flattening area coordinates in a non-flattening area by using a three-dimensional measuring instrument, and reading M flattening area coordinates in the flattening area, wherein the non-flattening area comprises a bending area and a non-bending area, part of the non-bending area is adjacent to the bending area, and the flattening area comprises other areas of the flexible display panel except the non-flattening area.
3. The method according to claim 2, wherein N non-flattened area coordinates, N ═ L1/D ·;
the values of the M flattened area coordinates on the X axis are the same as the values of the N non-flattened area coordinates on the X axis, the M flattened area coordinates are uniformly distributed on the Y axis, and the distance between every two adjacent flattened area coordinates on the Y axis is more than or equal to 0.1X L2, [ ] which represents the rounding;
l1 is the length of the bending region parallel to the bending axis, D ═ pi (R + b ×) T, R is the bending radius of the bending region, T is the screen thickness of the flexible display panel, b is an empirical coefficient, a is a positive integer, and L2 is the length of the flexible display panel perpendicular to the bending axis;
preferably, b has a value of 0.318 and a has a value of 2.
4. The method of claim 3, wherein calculating the crease width of the flexible display panel comprises:
determining a crease boundary according to the values of the N non-flattening area coordinates and the M flattening area coordinates on the Z axis;
and calculating the crease width of the flexible display panel according to the crease boundary.
5. The method of claim 3, wherein calculating the flatness of the flexible display panel comprises:
and determining the flatness according to the values of the N non-flattening area coordinates and the M flattening area coordinates on the Z axis, wherein the flatness is obtained by subtracting the value of any one of the M flattening area coordinates on the Z axis from the maximum value of the N non-flattening area coordinates on the Z axis.
6. The method of claim 1, wherein the obtaining test data comprises:
and shooting the flexible display panel by using an optical image measuring instrument to acquire the test data.
7. The method of claim 6, wherein calculating the crease width and the flatness of the flexible display panel comprises:
acquiring reference data of the flexible display panel before bending for preset times;
and comparing the reference data with the test data, and calculating the crease width and the flatness of the flexible display panel.
8. The method of claim 1, further comprising:
judging whether the width of the crease is less than or equal to the standard width and whether the flatness is less than or equal to the standard flatness;
and if so, the flatness test of the flexible display panel is qualified.
9. The method of claim 8, wherein the standard width is pi (R + b T), R is a bending radius of the bending region, T is a screen thickness of the flexible display panel, and b is an empirical coefficient;
preferably, b has a value of 0.318;
preferably, the standard flatness is 0.05 mm.
10. A flexible display panel, wherein the flexible display panel is tested for flatness using the method for testing flatness of a flexible display panel according to any one of claims 1 to 9.
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| CN112212812A (en) * | 2020-10-13 | 2021-01-12 | 联想(北京)有限公司 | Detection device and detection method |
| CN113299213A (en) * | 2021-06-17 | 2021-08-24 | 合肥维信诺科技有限公司 | Crease detection method and device |
| CN114136243A (en) * | 2021-10-18 | 2022-03-04 | 广州国显科技有限公司 | Device for measuring flatness of display panel |
| CN114203040A (en) * | 2021-12-03 | 2022-03-18 | 合肥维信诺科技有限公司 | Flexible display panel and flexible display device |
| WO2023189166A1 (en) * | 2022-03-29 | 2023-10-05 | ソニーグループ株式会社 | Information processing device, information processing method, and information processing system |
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