CN112345381A - Flexible display panel and dynamic bending test device thereof - Google Patents
Flexible display panel and dynamic bending test device thereof Download PDFInfo
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- CN112345381A CN112345381A CN202011176636.3A CN202011176636A CN112345381A CN 112345381 A CN112345381 A CN 112345381A CN 202011176636 A CN202011176636 A CN 202011176636A CN 112345381 A CN112345381 A CN 112345381A
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- 238000005452 bending Methods 0.000 title claims abstract description 131
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- 239000004800 polyvinyl chloride Substances 0.000 claims description 5
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- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/20—Investigating strength properties of solid materials by application of mechanical stress by applying steady bending forces
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
- G01N3/04—Chucks
Abstract
The invention discloses a flexible display panel and a dynamic bending test device thereof. The flexible display panel dynamic bending test device is used for carrying out dynamic bending test on a flexible display panel, and the flexible display panel comprises a bending area and two non-bending areas which are respectively positioned at two sides of the bending area; the method comprises the following steps: the flexible display panel testing device comprises two testing main bodies, a flexible display panel and a controller, wherein the two testing main bodies are respectively used for fixing two non-bending areas of the flexible display panel, and each testing main body comprises a supporting structure and a covering structure which are arranged oppositely; the flexible display panel comprises a support structure, a flexible display panel and a flexible display panel, wherein the support structure is provided with at least one groove, and a non-bending area of one flexible display panel is arranged in one groove; the covering structure is positioned on one side of the supporting structure provided with the groove, and at least covers the groove. The scheme disclosed by the invention can stably fix the flexible display panel in the dynamic bending test device of the flexible display panel, reduce the situations that the flexible display panel is displaced and extruded by external force in the test and improve the dynamic bending test effect 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 dynamic bending test device thereof.
Background
With the development of display technology, the flexible display panel plays an increasingly important role in folding mobile phones and wearable smart devices due to the characteristics of low power consumption, flexibility and the like.
In order to ensure the reliability of the flexible display panel, in the development stage, a dynamic bending test is usually performed on the flexible display panel. The process of folding the flexible display panel inward or outward and then unfolding the flexible display panel is called a primary bending process, that is, a bending test is performed on the flexible display panel in a manner similar to folding paper in half. However, the conventional test fixture is too loose or too tight to fix the flexible display panel, which may result in inaccurate test results.
Disclosure of Invention
The invention provides a flexible display panel and a dynamic bending test device thereof, which can stably fix the flexible display panel in the dynamic bending test device of the flexible display panel, reduce the displacement and extrusion of the flexible display panel by external force during testing, and improve the dynamic bending test effect of the flexible display panel.
In a first aspect, an embodiment of the present invention provides a dynamic bending test device for a flexible display panel, which is used for performing a dynamic bending test on the flexible display panel, where the flexible display panel includes a bending region and two non-bending regions respectively located at two sides of the bending region; flexible display panel developments testing arrangement that buckles includes:
the flexible display panel testing device comprises two testing main bodies, a flexible display panel and a controller, wherein the two testing main bodies are respectively used for fixing two non-bending areas of the flexible display panel, and each testing main body comprises a supporting structure and a covering structure which are arranged oppositely; wherein the content of the first and second substances,
the supporting structure is provided with at least one groove, and the non-bending area of one flexible display panel is arranged in one groove; the covering structure is positioned on one side of the supporting structure provided with the groove, and at least covers the groove.
Optionally, when at least two grooves are arranged on the support structure, the length and the width of any two grooves are the same, or at least one of the length and the width of any two grooves is different.
According to the above dynamic bending test device for the flexible display panel, optionally, when at least two grooves are arranged on the support structure, the vertical distances from one test main body to another test main body of the bending region of the flexible display panel arranged in the groove are the same.
According to the dynamic bending test device for the flexible display panel, optionally, the difference between the depth of the groove and the thickness of the flexible display panel is greater than 0 and less than or equal to 0.5 mm.
According to the dynamic bending test device for the flexible display panel, optionally, the buffer layer is partially or completely arranged on the region where the groove is in contact with the flexible display panel.
According to the dynamic bending test device for the flexible display panel, optionally, a buffer layer is partially or completely arranged on one side of the covering structure close to the support structure.
Optionally, the edge of the buffer layer near the junction of the bending region and the non-bending region is arc-shaped.
According to the above dynamic bending test device for the flexible display panel, optionally, the material of the buffer layer is any one or a combination of more than one of the following materials: composite adhesive tape, silica gel, optical adhesive, pressure-sensitive adhesive and foam.
According to the above dynamic bending test device for the flexible display panel, optionally, the support structure and the cover structure are fixed by any one of the following manners: the fastener, the magnetic lock catch, the mortise and tenon joint structure and the buckle are arranged on the base; the material of the test body is any one or combination of more of the following materials: metal, metal alloy, polyvinyl chloride PVC.
In a second aspect, an embodiment of the present invention further provides a flexible display panel, where the flexible display panel is subjected to a dynamic bending test by using the dynamic bending test apparatus for a flexible display panel having any of the features of the first aspect.
The invention provides a flexible display panel and a dynamic bending test device thereof, wherein the dynamic bending test device of the flexible display panel is used for carrying out dynamic bending test on the flexible display panel, and the flexible display panel comprises a bending area and two non-bending areas which are respectively positioned at two sides of the bending area; flexible display panel developments testing arrangement that buckles includes: the flexible display panel testing device comprises two testing main bodies, a flexible display panel and a controller, wherein the two testing main bodies are respectively used for fixing two non-bending areas of the flexible display panel, and each testing main body comprises a supporting structure and a covering structure which are arranged oppositely; the flexible display panel comprises a support structure, a flexible display panel and a flexible display panel, wherein the support structure is provided with at least one groove, and a non-bending area of one flexible display panel is arranged in one groove; the covering structure is positioned on one side of the supporting structure provided with the groove, and at least covers the groove. Through the non-bending area of recess holding flexible display panel, realize spacing effect for flexible display panel can stably fix in flexible display panel developments testing arrangement that buckles, thereby the flexible display panel that has significantly reduced shifts in the test, receives the extruded condition of external force, promotes flexible display panel's developments and buckles the test effect.
Drawings
Fig. 1 is a schematic diagram of a conventional flexible display panel performing a dynamic bending test;
fig. 2 is a schematic perspective view of a dynamic bending test apparatus for a flexible display panel according to an embodiment of the present invention;
fig. 3 is a schematic perspective view of a flexible display panel accommodated in a supporting structure according to an embodiment of the present invention;
fig. 4 is a schematic top view of a flexible display panel accommodated in a supporting structure according to an embodiment of the present invention;
FIG. 5 is a schematic perspective view of a support structure according to an embodiment of the present invention;
FIG. 6 is a schematic top view of another supporting structure for accommodating a flexible display panel according to an embodiment of the present invention;
fig. 7 is a schematic top view of another supporting structure for accommodating a flexible display panel according to an embodiment of the present invention;
FIG. 8 is a schematic view of a support structure and a cover structure secured by a magnetic latch according to an embodiment of the present invention;
fig. 9 is a schematic perspective view of another dynamic bending test apparatus for a 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.
In order to ensure the reliability of the flexible display panel, in the development stage, a dynamic bending test is usually performed on the flexible display panel. Fig. 1 shows a schematic diagram of a conventional flexible display panel for performing a dynamic bending test, as shown in fig. 1, a flexible display panel 1 is respectively fixed on two fixing plates 3 through pressing strips 2, one fixing plate 3 is kept stationary (e.g., a fixing plate below in fig. 1), and the other fixing plate 3 moves along a direction indicated by an arrow in fig. 1, so as to drive the flexible display panel 1 to bend, thereby implementing the dynamic bending test. However, when the press bar 2 is too loose, the flexible display panel 1 may be misaligned; when the pressing bar 2 is too tight, the flexible display panel 1 may be squeezed by an external force, and even the screen body may be damaged. The screen body material is wasted, and scientific research personnel are prevented from rapidly and accurately analyzing the screen body defect. In order to solve the above problems, embodiments of the present invention provide a flexible display panel and a dynamic bending test device thereof, which can stably fix the flexible display panel in the dynamic bending test device of the flexible display panel, so that the flexible display panel does not shift and is not squeezed by an external force during a test, and a dynamic bending test effect of the flexible display panel is improved.
The structure and technical effects of the flexible display panel and the dynamic bending test device thereof are described in detail below.
In addition, the following embodiments are all exemplified by the flexible display panel being rectangular, and in practical applications, the flexible display panel may also be regular or irregular, such as circular, polygonal, and the like, and the present invention is not limited to this. Meanwhile, in order to describe the structure of the dynamic bending test device of the flexible display panel more clearly, the size of each structure in the flexible display panel is adjusted correspondingly in the following drawings.
The embodiment of the invention provides a dynamic bending test device for a flexible display panel, which is used for carrying out dynamic bending test on the flexible display panel, wherein the flexible display panel comprises a bending area and two non-bending areas which are respectively positioned at two sides of the bending area; flexible display panel developments testing arrangement that buckles includes: the flexible display panel testing device comprises two testing main bodies, a flexible display panel and a controller, wherein the two testing main bodies are respectively used for fixing two non-bending areas of the flexible display panel, and each testing main body comprises a supporting structure and a covering structure which are arranged oppositely; the flexible display panel comprises a support structure, a flexible display panel and a flexible display panel, wherein the support structure is provided with at least one groove, and a non-bending area of one flexible display panel is arranged in one groove; the covering structure is positioned on one side of the supporting structure provided with the groove, and at least covers the groove.
Specifically, taking an example that a groove is arranged on a support structure, fig. 2 shows a schematic perspective structure of a dynamic bending test device for a flexible display panel according to an embodiment of the present invention, fig. 3 shows a schematic perspective structure of a flexible display panel accommodated by a support structure according to an embodiment of the present invention, fig. 4 shows a schematic top view structure of a flexible display panel accommodated by a support structure according to an embodiment of the present invention, and fig. 5 shows a schematic perspective structure of a support structure according to an embodiment of the present invention. As shown in fig. 2 to 5, the flexible display panel 20 includes a bending region 22 and two non-bending regions 21 respectively located at two sides of the bending region 22. Flexible display panel developments testing arrangement that buckles includes: two test bodies 10, each test body 10 comprising an oppositely arranged support structure 11 and a cover structure 12.
The supporting structures 11 are provided with grooves a (regions indicated by arrows in fig. 5), and the non-bending regions 21 of the flexible display panel 20 are disposed in the grooves a, that is, the bending regions 22 of the flexible display panel 20 are suspended between the two supporting structures 11, so that dynamic bending can be achieved.
The cover structure 12 is located at a side of the support structure 11 where the groove a is provided, and the cover structure 12 covers at least the groove a. That is, the cover structure 12 covers the support structure 11.
As can be seen from fig. 2 to fig. 5, the two non-bending regions 21 of the flexible display panel 20 are disposed in the grooves a of the two support structures 11, so that the flexible display panel 20 can be fixed by the test main body 10, the grooves a can limit the non-bending regions 21, and the flexible display panel 20 can be stably fixed in the dynamic bending test device for the flexible display panel. One test main body 10 is made to be stationary, and the other test main body 10 moves along the direction indicated by the arrow in fig. 4, so as to drive the flexible display panel 20 to bend, thereby implementing the dynamic bending test. Compared with the traditional scheme that the flexible display panel 20 is fixed by the pressing strips, the flexible display panel 20 is fixed by the grooves, the situation that the flexible display panel 20 is displaced or extruded can be greatly reduced, the influence of external factors on the test result is reduced, and the dynamic bending test effect of the flexible display panel is improved.
Taking the supporting structure provided with a plurality of grooves as an example, fig. 6 shows a schematic top view structure diagram of another supporting structure provided by the embodiment of the invention for accommodating a flexible display panel. As shown in fig. 6, the support structure 11 is provided with three grooves, and the length (i.e., the distance of the grooves in the horizontal direction in fig. 6) and the width (i.e., the distance of the grooves in the vertical direction in fig. 6) of the three grooves are the same. Therefore, the dynamic bending testing device for the flexible display panel can be used for dynamically testing three flexible display panels simultaneously, and the testing efficiency is improved. Alternatively, fig. 7 is a schematic top view illustrating another supporting structure for accommodating a flexible display panel according to an embodiment of the present invention, and as shown in fig. 7, three grooves are provided on the supporting structure 11, and the lengths (i.e., the distances of the grooves in the horizontal direction in fig. 7) of the three grooves are the same, and the widths (i.e., the distances of the grooves in the vertical direction in fig. 7) of the three grooves are different. Therefore, the dynamic bending test device for the flexible display panel can dynamically test three flexible display panels simultaneously, can be adapted to flexible display panels of various sizes, and improves the adaptability of the dynamic bending test device for the flexible display panels. It will be appreciated that, in addition to the support structure shown in FIG. 7 above, when at least two grooves are provided on the support structure, the length and width of any two grooves may be different; or any two grooves may have different lengths but the same width.
It should be noted that, when at least two grooves are disposed on the supporting structure 11, in order to ensure the accuracy of the test, the vertical distance (i.e. the width of the bending region 22) from one test main body to another test main body of the bending region 22 of the flexible display panel disposed in the groove is the same. This is because, if the vertical distance from one test body to another test body is different in the bending region 22 of the flexible display panel disposed in the groove, the non-bending region 21 of the flexible display panel having the too narrow bending region 22 may be broken by being bent violently, and a part of the bending region 22 of the flexible display panel having the too wide bending region 22 may fall into the groove, and thus the bending effect may not be achieved.
In one embodiment, in order to prevent the test body 10 from pressing the flexible display panel 20, a difference between the depth of the groove a and the thickness of the flexible display panel 20 is greater than 0 and less than or equal to 0.5 mm. Optionally, the difference between the depth of the groove a and the thickness of the flexible display panel 20 is 0.2mm or 0.3 mm. Thus, a certain movement space can be left for the deformation of the flexible display panel 20 when being bent.
Optionally, a buffer layer is partially or completely arranged on a region where the groove a is in contact with the flexible display panel; and/or a buffer layer is partially or completely arranged on one side of the covering structure 12 close to the support structure 11. Preferably, the edge of the buffer layer near the junction of the bending region 22 and the non-bending region 21 is arc-shaped.
That is, the buffer layer may be partially or entirely disposed on a region where the test body 10 contacts the flexible display panel 20. When the buffer layer is completely arranged on the contact area between the test main body 10 and the flexible display panel 20, the buffer layer can completely wrap the non-bending area of the flexible display panel, so that a buffer effect is provided for the flexible display panel 20 when the flexible display panel 20 is dynamically bent, and the stress released near the junction of the bending area 22 and the non-bending area 21 is buffered; when the buffer layer is disposed on the upper portion of the contact region between the test main body 10 and the flexible display panel 20, the buffer layer has certain fluidity and can better adapt to the shape of the flexible display panel 20, the buffer layer provides a buffer effect for the flexible display panel 20 when the flexible display panel 20 is dynamically bent, and the buffer layer buffers the stress released near the junction of the bending region 22 and the bending region 22 with the non-bending region 21.
The buffer layer is made of any one or a combination of more of the following materials: composite adhesive tape, silica gel, optical adhesive, pressure-sensitive adhesive and foam. The buffer layer has certain viscosity, and can bond the test main body 10 and the flexible display panel 20, thereby further ensuring that the flexible display panel 20 does not displace in the groove.
In one embodiment, the support structure 11 and the cover structure 12 are secured by any one of the following: fastener, magnetic force hasp, tenon fourth of the twelve earthly branches structure, buckle. For example, fig. 8 is a schematic diagram illustrating a supporting structure and a covering structure fixed by a magnetic lock according to an embodiment of the present invention. As shown in fig. 8, at least one set of magnetic latches (i.e., an N-pole latch and an S-pole latch) is disposed on the supporting structure 11 and the covering structure 12, and the N-pole latch and the S-pole latch attract each other to fix the supporting structure 11 and the covering structure 12.
Alternatively, the fastener may be at least one of a bolt, a stud, a screw, a nut, a rivet, a washer, and a pin; the tenon-and-mortise structure is a concave-convex combination connection mode, and the protruding part is called a tenon (or tenon); the concave part is called as mortise (or mortise, mortise), and the tenon and the mortise are occluded to play a role in connection; a snap is a mechanism for the embedded connection or integral locking of one part to another, usually consisting of a retainer, a fastener.
In one embodiment, the material of the test body 10 is any one or a combination of more than one of the following: metal, metal alloy, Polyvinyl chloride (PVC).
In an embodiment, fig. 9 is a schematic perspective view illustrating a three-dimensional structure of another flexible display panel dynamic bending test apparatus provided in an embodiment of the present invention, and unlike the flexible display panel dynamic bending test apparatus shown in fig. 2, the flexible display panel dynamic bending test apparatus further includes a connecting member 30. The connection member 30 is used to connect two test subjects 10, and can prevent the test subjects 10 from being lost.
It can be understood that the length of the connection member 30 is greater than the length of the bending region 22 of the flexible display panel 20 to ensure the proper operation of the dynamic bending test device for the flexible display panel.
The invention provides a dynamic bending test device for a flexible display panel, which is used for carrying out dynamic bending test on the flexible display panel, wherein the flexible display panel comprises a bending area and two non-bending areas which are respectively positioned at two sides of the bending area; flexible display panel developments testing arrangement that buckles includes: the flexible display panel testing device comprises two testing main bodies, a flexible display panel and a controller, wherein the two testing main bodies are respectively used for fixing two non-bending areas of the flexible display panel, and each testing main body comprises a supporting structure and a covering structure which are arranged oppositely; the flexible display panel comprises a support structure, a flexible display panel and a flexible display panel, wherein the support structure is provided with at least one groove, and a non-bending area of one flexible display panel is arranged in one groove; the covering structure is positioned on one side of the supporting structure provided with the groove, and at least covers the groove. Through the non-bending area of recess holding flexible display panel, realize spacing effect for flexible display panel can stably fix in flexible display panel developments testing arrangement that buckles, thereby the flexible display panel that has significantly reduced shifts in the test, receives the extruded condition of external force, promotes flexible display panel's developments and buckles the test effect.
The embodiment of the invention also provides a flexible display panel, and the flexible display panel is subjected to dynamic bending test by adopting the dynamic bending test device for 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 dynamic bending test device for a flexible display panel is characterized by being used for carrying out dynamic bending test on the flexible display panel, wherein the flexible display panel comprises a bending area and two non-bending areas which are respectively positioned at two sides of the bending area; the flexible display panel dynamic bending test device comprises:
the two test main bodies are respectively used for fixing two non-bending areas of the flexible display panel, and each test main body comprises a supporting structure and a covering structure which are oppositely arranged; wherein the content of the first and second substances,
the supporting structure is provided with at least one groove, and a non-bending area of one flexible display panel is arranged in one groove; the covering structure is positioned on one side of the supporting structure provided with the groove, and at least covers the groove.
2. The dynamic bending test device for the flexible display panel according to claim 1, wherein when at least two grooves are disposed on the support structure, the length and the width of any two grooves are the same, or at least one of the length and the width of any two grooves is different.
3. The dynamic bending test device for the flexible display panel according to claim 1, wherein when at least two grooves are formed on the support structure, the vertical distance from one test body to another test body of the bending region of the flexible display panel disposed in the groove is the same.
4. The dynamic bending test device for the flexible display panel according to claim 1, wherein the difference between the depth of the groove and the thickness of the flexible display panel is greater than 0 and less than or equal to 0.5 mm.
5. The dynamic bending test device for the flexible display panel according to claim 1, wherein a buffer layer is partially or completely disposed on a region where the groove contacts the flexible display panel.
6. The dynamic bending test device for the flexible display panel according to claim 1, wherein a buffer layer is partially or completely disposed on one side of the covering structure close to the support structure.
7. The dynamic bending test device for the flexible display panel according to claim 5 or 6, wherein an edge of the buffer layer near a junction of the bending region and the non-bending region is in a shape of a circular arc.
8. The dynamic bending test device for the flexible display panel according to claim 5 or 6, wherein the material of the buffer layer is any one or a combination of more than one of the following materials: composite adhesive tape, silica gel, optical adhesive, pressure-sensitive adhesive and foam.
9. The dynamic bending test device for the flexible display panel according to claim 1, wherein the support structure and the cover structure are fixed by any one of the following methods: the fastener, the magnetic lock catch, the mortise and tenon joint structure and the buckle are arranged on the base; the material of the test body is any one or combination of more of the following materials: metal, metal alloy, polyvinyl chloride PVC.
10. A flexible display panel, wherein the flexible display panel is subjected to a dynamic bending test by using the flexible display panel dynamic bending test apparatus according to any one of claims 1 to 9.
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| CN210274730U (en) * | 2019-07-03 | 2020-04-07 | 深圳市鑫集优电子科技有限公司 | Bending device is used in production of FPC circuit board |
| CN210465159U (en) * | 2019-07-11 | 2020-05-05 | 上海精骊电子技术有限公司 | Bending equipment |
| CN110749511A (en) * | 2019-11-29 | 2020-02-04 | 武汉天马微电子有限公司 | Display panel bending test fixture |
| CN111192525A (en) * | 2020-02-28 | 2020-05-22 | 上海天马微电子有限公司 | Flexible display device and bending control method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022227503A1 (en) * | 2021-04-28 | 2022-11-03 | 京东方科技集团股份有限公司 | Jig for testing bending dislocation momentum of flexible display module and test method therefor |
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