CN112985979A - Bending test device - Google Patents
Bending test device Download PDFInfo
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- CN112985979A CN112985979A CN202110132241.1A CN202110132241A CN112985979A CN 112985979 A CN112985979 A CN 112985979A CN 202110132241 A CN202110132241 A CN 202110132241A CN 112985979 A CN112985979 A CN 112985979A
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- 238000005452 bending Methods 0.000 title claims abstract description 115
- 238000012360 testing method Methods 0.000 title claims abstract description 91
- 230000005684 electric field Effects 0.000 claims description 12
- 239000007769 metal material Substances 0.000 claims description 3
- 239000004065 semiconductor Substances 0.000 abstract description 2
- 239000010410 layer Substances 0.000 description 12
- 239000000758 substrate Substances 0.000 description 11
- 238000010586 diagram Methods 0.000 description 9
- 238000004806 packaging method and process Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 4
- 230000005484 gravity Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 239000010409 thin film Substances 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000010408 film Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 239000002346 layers by function Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
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- 230000007306 turnover Effects 0.000 description 1
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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
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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
- G01N3/32—Investigating strength properties of solid materials by application of mechanical stress by applying repeated or pulsating forces
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0001—Type of application of the stress
- G01N2203/0005—Repeated or cyclic
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0023—Bending
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/04—Chucks, fixtures, jaws, holders or anvils
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Abstract
The application relates to the technical field of semiconductor device testing equipment, in particular to a bending testing device which is used for testing a flexible component and comprises a first clamp, a second clamp and a stroke limiting piece, wherein the first clamp is used for clamping a first edge of the flexible component, the second clamp is used for clamping a second edge of the flexible component, and the second edge is arranged opposite to the first edge; the stroke limiting piece is used for limiting the stroke of the second clamp moving towards the two sides of the clamping plane of the first clamp respectively, so that the two ends of the second clamp can move towards the two sides of the clamping plane of the first clamp in an arc mode at different speeds, and the flexible part can be driven to bend towards the two sides. The bending test device of the embodiment of the application can drive the flexible part to bend towards two sides, and inward bending and outward bending tests of the flexible part are achieved.
Description
Technical Field
The application relates to the technical field of semiconductor device testing equipment, in particular to a bending testing device.
Background
With the rapid development of display technology in recent years, flexible display attracts great attention, including full-screen, bendable, and even foldable mobile phones with fixed curve shape will be widely used in future market. As the performance requirements of the display for users become higher, the foldable flexible display is also becoming a hot spot for industrial research.
The bending test fixture is an important tool for testing parameters such as bending angles and bending times of the flexible display, and has important significance for measuring the performance of the bending display. The bending test of the existing bending test fixture has certain limitation, and the test requirement of performing various bending tests on flexible components such as a flexible display panel and the like cannot be met.
Disclosure of Invention
In view of this, the present application mainly solves the technical problem of providing a bending test apparatus, which can bend a flexible component to two sides, so as to meet the test requirements of multiple bending forms of the flexible component.
In order to solve the technical problem, the application adopts a technical scheme that: a bending test device is used for testing a flexible component and comprises a first clamp, a second clamp and a stroke limiting piece, wherein the first clamp is used for clamping a first edge of the flexible component, the second clamp is used for clamping a second edge of a flexible display panel, and the second edge is arranged opposite to the first edge; the stroke limiting piece is used for limiting the stroke of the second clamp moving towards the two sides of the clamping plane of the first clamp respectively, so that the two ends of the second clamp can move towards the two sides of the clamping plane of the first clamp in an arc mode at different speeds, and the flexible part can be driven to bend towards the two sides.
The stroke limiting piece comprises an arc-shaped track, the arc-shaped track surrounds the first clamp and extends towards the two sides of the clamping plane of the first clamp in an arc shape, and one end, far away from the first clamp, of the second clamp is arranged on the arc-shaped track in a sliding mode.
The arc-shaped track comprises a circular track, and one end, far away from the first clamp, of the second clamp is arranged on the circular track in a sliding mode and can reciprocate along the circular track.
The first clamp and the second clamp are arranged along the radial direction of the circular track respectively, one end, far away from the first clamp, of the second clamp is fixed on the circular track in a sliding mode, and one end, close to the first clamp, of the second clamp is a free end.
One end of the first clamp, which is far away from the second clamp, is fixed on the circular track, and one end of the first clamp, which is close to the second clamp, is a free end.
Wherein, first anchor clamps perpendicular to horizontal plane sets up.
Wherein, first anchor clamps and second anchor clamps interval setting.
The bending test device also comprises an electric field generating unit; the second clamp is made of a metal material, and the electric field generation unit drives the second clamp to slide along the arc-shaped track through an electric field.
Wherein, the end of the second clamp far away from the first clamp is arranged on the inner wall of the stroke limiting piece in a sliding way, or the end of the second clamp far away from the first clamp is arranged on the outer wall of the stroke limiting piece in a sliding way, or the end of the second clamp far away from the first clamp is arranged on the end face of the stroke limiting piece in a sliding way.
The bending test device further comprises a supporting and fixing assembly, wherein the supporting and fixing assembly is arranged on the outer wall of the stroke limiting piece and used for supporting and fixing the stroke limiting piece.
The beneficial effect of this application is: be different from prior art, the crooked testing arrangement of this application is through setting up the stroke and limiting the piece, can inject the orbit that the second anchor clamps removed respectively to the clamping plane both sides of first anchor clamps, and can make the second anchor clamps can remove to the clamping plane both sides arc of first anchor clamps, can drive flexible component to both sides bending, realizes the test demand to multiple bending forms such as the incurvation of flexible component and incurvation.
Drawings
FIG. 1 is a schematic structural diagram of a bending test apparatus according to an embodiment of the present application;
FIG. 2 is a structural schematic diagram of the embodiment of FIG. 1 in a bent state;
FIG. 3 is a structural schematic view of the embodiment of FIG. 1 in another bent state;
FIG. 4 is a schematic structural diagram of a bending test apparatus according to another embodiment of the present application;
FIG. 5 is a schematic structural diagram of a bending test apparatus according to yet another embodiment of the present application;
FIG. 6 is a structural schematic view of the embodiment of FIG. 5 in a bent state;
FIG. 7 is a structural schematic view of the embodiment of FIG. 5 in another bent state;
FIG. 8 is a schematic cross-sectional view taken along line A-A' of FIG. 5;
FIG. 9 is a schematic structural diagram of a bending test apparatus according to yet another embodiment of the present application;
FIG. 10 is a schematic structural diagram of a bending test apparatus according to yet another embodiment of the present application;
FIG. 11 is a schematic structural diagram of a bending test apparatus according to yet another embodiment of the present application;
FIG. 12 is a schematic structural diagram of a bending test apparatus according to yet another embodiment of the present application.
10, a first clamp; 20. a second clamp; 21. a hollow structure; 30. a stroke limiting member; 40. a flexible display panel; 31. an arc-shaped track; 32. a circular track; 33. an outer wall; 34. an inner wall; 35. a cavity; 50. supporting the fixed component; 70. a planar structural member; 80. a horizontal table top; 51. a support bar; 52. a base; 53. the substrate is fixed.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application.
As shown in fig. 1 to 3, a bending test apparatus includes a first clamp 10, a second clamp 20, and a stroke limiting member 30, the first clamp 10 for clamping a first side of a flexible member, the second clamp 20 for clamping a second side of the flexible member, the first side being disposed opposite to the second side; the stroke limiting members 30 are used for limiting the strokes of the second clamp 20 moving to the two sides of the clamping plane 11 of the first clamp 10, respectively, so that the two ends of the second clamp 20 can move in an arc shape to the two sides of the clamping plane 11 of the first clamp 10 at different speeds, so as to drive the flexible component to bend to the two sides.
The bending test device of the embodiment of the application can limit the track of the second clamp 20 moving towards the two sides of the clamping plane 11 of the first clamp 10 respectively by arranging the stroke limiting piece 30, and can enable the second clamp 20 to move towards the two sides of the clamping plane 11 of the first clamp 10 in an arc shape, so that the flexible part can be driven to bend towards the two sides, and the two-sided bending test of the flexible part is realized. The flexible member includes a flexible circuit board, a flexible display panel 40, and any other flexible member that requires a bending resistance test, wherein the flexible display panel 40 includes an OLED flexible display panel. When the flexible component is the flexible display panel 40, the second fixture 20 of the embodiment of the application can move in an arc shape towards two sides of the clamping plane 11 of the first fixture 10, and can drive the flexible display panel 40 to bend inwards and outwards, that is, to bend towards one side of the display surface and to bend towards one side of the non-display surface, so as to obtain the performance of the flexible display panel 40, such as the bending times, the bending radius, and the like. The following embodiments of the present application are described by taking a flexible member as the flexible display panel 40 as an example.
Fig. 2 and 3 are schematic diagrams illustrating the flexible display panel 40 being a flexible member bent to both sides, in which an arrow D1 indicates a first direction indicating a direction in which the flexible display panel 40 is bent inward (the display surface faces inward), and an arrow D2 indicates a second direction indicating a direction in which the flexible display panel 40 is bent outward (the non-display surface faces inward).
Continuing with fig. 1, the clamping plane 11 of the first clamp 10 is a central plane of the first clamp 10 clamping the flexible display panel 40, and in other embodiments, the first clamp 10 may also refer to a plane where the first clamp 10 clamps the flexible display panel 40, or a plane where the first clamp 10 clamps the flexible display panel 40. In the embodiment of the present application, the first fixture 10 includes two opposite planar structural members 70, the two planar structural members 70 are disposed in parallel, and the two planar structural members 70 are close to each other to clamp the flexible display panel 40, so that the acting force applied to the flexible display panel 40 by the first fixture 10 is uniform, and the stress generated when one end of the flexible display panel 40 is clamped by the first fixture 10 is small. The second fixture 20 also includes two planar structural members 70, which function in the same manner as the first fixture 10 and are not described in detail. In other embodiments, the first clamp 10 and the second clamp 20 may be other types of clamps to clamp and fix the flexible display panel 40. In the embodiment of the present application, the first fixture 10 is used for clamping the end of the first edge of the flexible display panel 40, the first fixture 10 clamps the partial area of the display plane where the flexible display panel 40 is located, the second fixture 20 is used for clamping the end of the second edge of the flexible display panel 40, and the second fixture 20 clamps the partial area of the display plane where the flexible display panel 40 is located.
In one embodiment of the present disclosure, the stroke limiting member 30 may also include a mechanical arm (not shown), and the mechanical arm may set a fixed moving stroke, in this embodiment of the present disclosure, one end of the second fixture 20 is fixed on the mechanical arm, and the mechanical arm drives the second fixture 20 to move in an arc shape and move to two sides of the clamping plane 11 of the first fixture 10, so as to drive the flexible display panel 40 to respectively bend to two sides, and implement an inward bending test or an outward bending test on the flexible display panel 40.
In another embodiment of the present application, as shown in fig. 1-3, the stroke limiting member 30 includes an arc-shaped track 31, the arc-shaped track 31 surrounds the first clamp 10 and extends in an arc shape towards two sides of the clamping plane 11 of the first clamp 10, and the end of the second clamp 20 away from the first clamp 10 is slidably disposed on the arc-shaped track 31. In the embodiment of the present invention, the stroke limiting member 30 is configured as an arc-shaped rail 31, and the arc-shaped rail 31 extends in an arc shape towards both sides of the clamping plane 11 of the first clamp 10, so as to limit the second clamp 20 to move in an arc shape towards both sides, as shown in fig. 1-3, in the embodiment of the present invention, the first clamp 10 is vertically disposed, the arc-shaped rail 31 is disposed above the first clamp 10, and the arc-shaped rail 31 can limit the second clamp 20 to move towards both sides of the clamping plane 11 of the first clamp 10. In the embodiment of the present application, the arc-shaped rail 31 is a circular arc-shaped rail, so that the bending test apparatus in the embodiment of the present application can perform an inward bending test or an outward bending test of a specific angle on the flexible display panel 40.
In one embodiment of the present application, the flexible display panel 40 may be subjected to an inward bending test and an outward bending test of 0 to 45 degrees with respect to the clamping plane 11 of the first clamp 10. Of course, the inward bending test and the outward bending test in other angle ranges can be performed by adjusting the length of the arc-shaped rail 31, and as shown in fig. 4, the inward bending test and the outward bending test of 0 to 90 degrees can be performed on the flexible display panel 40 relative to the clamping plane 11 of the first clamp 10 by adjusting the arc-shaped rail 31 to be a semi-arc-shaped rail. In other embodiments, the arc-shaped rail 31 may also be an elliptical arc-shaped rail 31, and may also be suitable for bending test requirements specific to the flexible display panel 40. After the flexible display panel is bent to the maximum (for example, 45 degrees or 90 degrees), it is detected whether or not a poor appearance or a poor display occurs. If the defect occurs, the maximum limit is the maximum bendable angle of the flexible display panel 40; if no bad bending is occurred, the flexible display panel 40 is repeatedly bent until reaching the required specification number, and accordingly the bending test of the flexible display panel 40 is completed.
Wherein, as shown in fig. 1-3, when the stroke limiting member 30 includes a part of the arc-shaped track 31, the bending test apparatus further includes a supporting and fixing assembly 50, the supporting and fixing assembly 50 is connected to the arc-shaped track 31 for supporting and fixing the arc-shaped track 31, for example, the supporting and fixing assembly 50 in the embodiment of the present application may include a supporting rod 51, one end of the supporting rod 51 is connected to an outer surface of the arc-shaped track 31 or an end surface of the arc-shaped track 31, and the other end of the supporting rod 51 is supported on the horizontal table 80, so that the supporting rod 51 can support the arc-shaped track 31.
In an embodiment of the present application, as shown in fig. 5 to 7, the arc-shaped rail 31 includes a circular rail 32, and one end of the second clamp 20 away from the first clamp 10 is slidably disposed on the circular rail 32 and can reciprocate along the circular rail 32. In the embodiment of the present application, the arc-shaped rail 31 includes a circular rail 32, the second fixture 20 can perform a circular reciprocating motion along the circular rail 32, and can achieve inward bending of 0-180 degrees and outward bending of 180-360 degrees with respect to the clamping plane 11 of the first fixture 10, that is, inward bending as shown in fig. 6 and outward bending as shown in fig. 7 can be achieved, wherein the first direction D1 represents a direction in which the flexible display panel is bent inward, and the second direction D2 represents a direction in which the flexible display panel is bent outward. In the embodiment of the present application, 180-360 degrees only means that the bending direction of the outward bending is opposite to the inward bending direction, and means that the outward bending is 0-180 degrees.
In an embodiment of the present application, as shown in fig. 5 to 7, the first clamp 10 and the second clamp 20 are respectively disposed along a radial direction of the circular track 32, an end of the second clamp 20 away from the first clamp 10 is slidably fixed on the circular track 32, and an end of the second clamp 20 adjacent to the first clamp 10 is a free end. For the sake of convenience of distinction, the end of the second clamp 20 away from the first clamp 10 is the first end 21, and the end of the second clamp 20 adjacent to the first clamp 10 is the second end 22, in this embodiment, the first clamp 10 and the second clamp 20 are respectively arranged along the radial direction of the circular track 32, that is, along the line where the radius of the circular track 32 is located, so that the line where the extension plane of the clamping plane 11 of the first clamp 10 and the extension plane of the clamping plane 11 of the second clamp 20 intersect coincides with the center line of the circular track 32. In the embodiment of the present application, one end of the second fixture 20 close to the first fixture 10 is a free end, that is, the second end 22 is a free end, so that the second fixture 20 is not in contact with the first fixture 10, that is, when the second fixture 20 drives the flexible display panel 40 to bend, for example, when the second fixture 20 drives the flexible display panel 40 to bend along a certain axis, the flexible display panel 40 at the non-bending position is not wrinkled, and when the bending test apparatus bends the flexible display panel 40, the stress generated by the flexible display panel 40 is small. In the embodiment of the present application, the first end 21 and the second end 22 of the second clamp 20 move in an arc shape to both sides of the clamping plane 11 of the first clamp 10 at different speeds, and the speed of the first end 21 of the second clamp 20 is greater than that of the second end 22.
In one embodiment of the present application, an end of the first clamp 10 away from the second clamp 20 is fixed on the circular track 32, and an end of the first clamp 10 adjacent to the second clamp 20 is a free end. Through being fixed in first anchor clamps 10 on circular track 32, can make second anchor clamps 20 rotate in order to drive flexible display panel 40 towards the both sides arc removal of first anchor clamps 10 to make flexible display panel 40 buckle, the crooked testing arrangement in this application embodiment can be used to test the flexible display panel 40 the condition of buckling inwards, or the condition of buckling outwards, or carry out the condition of buckling inwards and outwards buckling simultaneously. In other embodiments, one end of the first fixture 10 away from the second fixture 20 may also be slidably disposed on the circular track 32, and the bending test on the flexible display panel 40 may also be implemented by moving the first fixture 10 and the second fixture 20 simultaneously in opposite directions; or the first clamp 10 and the second clamp 20 move in the same direction, wherein the first clamp 10 or the second clamp 20 has a smaller moving speed, and can also drive the flexible display panel 40 to bend. In the embodiment of the present application, one end of the first clamp 10 adjacent to the second clamp 20 is a free end, so that the free end of the first clamp 10 and the free end of the second clamp 20 of the bending test apparatus are not connected, which can reduce the acting force applied to the flexible display panel 40 and reduce the stress of the flexible display panel 40.
In the embodiment of the present application, as shown in fig. 1 and 5, when the first clip 10 and the second clip 20 are on the same plane, a distance between the second end 22 of the second clip 20 and the free end of the first clip 10 is L, in the embodiment of the present application, the distance L is related to an R angle formed by bending the flexible display panel 40, and when the R angle is larger, the distance L is larger; as the R angle is smaller, the distance L is also smaller. Specifically, in the embodiment of the present application, the distance L is in the range of 4-10 cm, and the radius of the R angle formed by bending the flexible display panel 40 is 1.5-5 mm.
In one embodiment of the present application, the second gripper 20 and the first gripper 10 may be equal or unequal. The distance L between the second end 22 of the second clamp 20 and the free end of the first clamp 10 is 1/4-1/2 of the length of the flexible display panel 40, and the flexible display panel has enough clamping length to ensure the bending track of the flexible display panel 40. Preferably, L is 1/3 of the length of the flexible display panel 40, and the first clamp 10 and the second clamp 20 respectively clamp 1/3 of the flexible display panel 40, taking into account the clamping force and the bendable length. Specifically, in the present embodiment, the distance L is 6 cm, and the radius of the R-angle formed is 2.5 mm. In other embodiments, the distance L is 4 centimeters and the radius of the angle R formed is 1.5 millimeters; or the distance L is 10 cm, and the radius of the formed R angle is 5 mm; or a distance L of 7 cm and a radius of the formed R-angle of 3 mm.
In the embodiment of the present application, the flexible display panel 40 includes a stacked array substrate, a light emitting device, an encapsulation layer, and a cover plate. The array substrate comprises a substrate and a pixel circuit; the light emitting device comprises an anode layer, an organic light emitting layer, a cathode layer and the like; the packaging layer comprises an inorganic thin film packaging layer and an organic thin film packaging layer which are stacked. In the present application, the specific structure and material of the flexible display panel 40 are not limited, and other functional layers may be provided. When the array substrate, the light-emitting device, the packaging layer and the cover plate are bent inwards, namely towards the inward side of the display surface, the bending radiuses of the array substrate, the light-emitting device, the packaging layer and the cover plate are sequentially reduced, and when the array substrate, the light-emitting device, the packaging layer and the cover plate are bent outwards, namely towards the inward side of the display surface, the bending radiuses of the array substrate, the light-emitting device, the packaging layer and the cover plate are sequentially increased, so that the bending resistant times of different film layers can.
In one embodiment of the present application, and continuing with FIGS. 5-7, the first fixture 10 is disposed perpendicular to the horizontal plane. In the embodiment of the present application, the first fixture 10 is disposed perpendicular to the horizontal plane, and the first fixture 10 is fixed on the circular rail 32, so that the first fixture 10 is relatively fixed. Namely, the first clamp 10 is vertically disposed, and the clamping plane 11 of the first clamp 10 is a vertical clamping plane 11. The bending test apparatus of the embodiment of the present application is manufactured by arranging the first jig 10 perpendicular to the horizontal plane, so that, when the flexible display panel 40 is flat and unbent, the first and second clamps 10 and 20 are also disposed perpendicular to the horizontal plane while clamping the flexible display panel 40, when the flexible display panel 40 is subjected to a bending test, during bending from 0 degrees to 180 degrees, the gravity of the flexible display panel 40 has a component force in the bending direction of the flexible display panel 40, and the partial acting force of the gravity is the same as the bending direction of the flexible display panel 40, so that the gravity of the flexible display panel 40 is helpful for the bending of the flexible display panel 40, further the acting force given by the bending test device to the flexible display panel 40 in the bending process is smaller, the force of the flexible display panel 40 applied by the bending test device can be reduced, and the bending stress of the flexible display panel 40 can be reduced. Similarly, in this embodiment of the present application, when the flexible display panel 40 is bent from 360 degrees to 180 degrees, that is, the flexible display panel 40 is bent outward, so that the array substrate of the flexible display panel 40 is bent and folded toward the array substrate, the stress of the cover plate of the flexible display panel 40 is greater and more concentrated than that of the array substrate, in this embodiment of the present application, when the flexible display panel 40 is bent outward, the acting force applied to the flexible display panel 40 is smaller, so that the internal stress of the flexible display panel 40 is smaller, so that the stress of the cover plate of the flexible display panel 40 is smaller, so that the flexible display panel 40 can be suitable for the outward bending test.
In an embodiment of the present application, the first fixture 10 and the second fixture 20 are disposed at an interval, so that the first fixture 10 and the second fixture 20 of the bending test apparatus do not directly or indirectly contact with each other, so that when the first fixture 10 and the second fixture 20 clamp and bend the flexible display panel 40, the flexible display panel 40 can freely bend, and the flexible display panel 40 does not generate additional stress due to wrinkles.
In an embodiment of the present application, the bending test apparatus further includes an electric field generating unit (not shown); the second clamp 20 is made of a metal material, and the electric field generating unit drives the second clamp 20 to slide along the arc-shaped track 31 through an electric field. In the embodiment of the present application, the material of the second clamp 20 is aluminum, and in other embodiments, the second clamp 20 may also be iron or other materials. In the embodiment of the present application, the bending test apparatus can control the second fixture 20 to rotate centripetally by the electric field generating unit. When the electric field generating unit controls the second clamp 20 to perform centripetal movement, the moving speed of the second clamp 20 along the arc-shaped track 31 is conveniently controlled, for example, the speed is zero at 0 and 360 degrees; when bending inwards, the bending is carried out at 0-90 degrees for deceleration movement; when bending outwards, the bending is carried out at 360-270 degrees for deceleration movement; when the flexible display panel is bent at a constant speed of 90-180 degrees or 270-180 degrees, the bending test device can automatically control the bending of the flexible display panel 40, the bending angle is controllable, the test of different bending angles of the flexible display panel 40 can be realized, and the test requirements of various bending forms are further met. The electric field generating unit can easily control the moving speed of the second clamp 20, and the stress of the flexible display panel 40 can be reduced by controlling the moving speed of the second clamp 20, so that the bending test of the flexible display panel is more accurate.
In the embodiment of the subject application, as shown in FIG. 8, the travel limiting member 30 comprises a hollow cylindrical member or a portion of a hollow cylindrical member. In the embodiment of the present application, the width W of the first jig 101Width W of the second jig 202Are both larger than the width W of the flexible display panel 40, so that the first clamp 10 and the second clamp 20 can completely clamp the end of the flexible display panel 40, and the flexible display panel 40 is prevented from being subjected to additional stress caused by clamping one end of the flexible display panel 40 by two or more clamps. Width of the first clamp 10 in the embodiment of the present applicationThe widths of the two clamps 20 are respectively indicated as one side B of the first clamp 10 in the direction parallel to the central axis M-M' of the arc-shaped rail 311To another side B2Distance (d) of the second clamp 20, one side B of the second clamp 203To another side B4The distance of (c).
In one embodiment of the present application, as shown in FIG. 9, the second clamp 20 is slidably disposed on the inner wall 34 of the travel limiting member 30 at an end thereof remote from the first clamp 10. In the embodiment of the present application, the inner wall 34 of the stroke limiting member 30 has an arc-shaped cross section, the inner wall 34 of the stroke limiting member 30 is provided with an arc-shaped track 31, and one end of the second clamp 20 away from the first clamp 10 is in sliding fit with the arc-shaped track 31. Further, the inner wall 34 of the stroke limiting member 30 has a circular cross section, the inner wall 34 of the stroke limiting member 30 is provided with a circular track 32, and the end of the second clamp 20 away from the first clamp 10 is slidably engaged with the circular track 32. The shape of the outer wall 33 of the stroke limiting member 30 in the embodiment of the present application is not particularly limited, for example, as shown in fig. 10, the cross section of the outer wall 33 of the stroke limiting member 30 may be square, which facilitates stable placement of the bending test device, and in other embodiments, the cross section of the stroke limiting member 30 may also be circular or other shapes as shown in fig. 9, for example, as shown in fig. 11, the cross section of the outer wall 33 of the stroke limiting member 30 is a combination of rectangle and semicircle, and the rectangle is disposed at the bottom end to place the bending test device. In the case where the shape of the outer wall 33 of the stroke limiting member 30 is unstable when placed, for example, liable to roll or shake, the limiting member may be formed by providing the supporting and fixing member 50 to support and fix.
In another embodiment, as shown in fig. 12, one end of the second fixture 20, which is far away from the first fixture 10, may also be slidably disposed on the outer wall 33 of the stroke limiting member 30, one end of the second fixture 20, which is far away from the first fixture 10, is directly slidably disposed on the outer wall 33 of the stroke limiting member 30, and the second fixture 20 is provided with a hollow structure 21, so that the stroke limiting member 30 is inserted into the hollow structure 21, so that the other end of the second fixture 20 can slide in the cavity 35 of the stroke limiting member 30 to turn over the flexible display panel 40. In the embodiment of the present application, the circular track 32 is disposed on the outer wall 33 of the stroke limiting member 30, and the outer wall 33 of the stroke limiting member 30 has a circular cross-section. In the embodiment of the present application, the shape of the inner wall 34 of the stroke limiting member 30 is not particularly limited, and may be circular or other shapes, and the cross section of the inner wall 34 shown in fig. 12 has an irregular shape. But at least may cause the flexible display panel 40 to bend or flex. In the present embodiment, the outer wall 33 is circular in shape so that the limiting member is easily rolled when placed, and for this purpose, the supporting and fixing assembly 50 is provided to support the fixed stroke limiting member 30. For example, a base 52 and a fixed base plate 53 of the fixed component 50 are supported, the base 52 is disposed between the stroke limiting member 30 and the fixed base plate 53, and the base 52 is opposite to one end of the first clamp 10 away from the second clamp 20; the stationary base plate 53 serves to stabilize the stroke limiting member 30. In other embodiments, one end of the second clamp 20 can be slidably disposed with the arcuate track 31 of the outer wall 33 of the travel limiting member 30 via a connector (not shown).
In yet another embodiment, the second clamp 20 is slidably disposed on the end surface of the travel limiting member 30 at an end remote from the first clamp 10. By arranging the arc-shaped rail 31 or even the circular rail 32 on the end surface where the limiting member is formed, the end of the second clamp 20 away from the first clamp 10 is arranged on the arc-shaped rail 31 or even the circular rail 32 in a sliding manner, so that the shape of the inner wall 34 and the outer wall 33 of the stroke limiting member 30 is not particularly limited in the embodiment of the present application. When the outer wall 33 of the stroke limiting member 30 is circular, the bending test apparatus further comprises a supporting and fixing member 50, and the supporting and fixing member 50 is connected with the stroke limiting member 30 for supporting and fixing the stroke limiting member 30.
Specifically, the supporting and fixing assembly 50 includes a base 52, a fixing base plate 53 and a supporting rod 51, the base 52 is disposed between the fixing base plate 53 and the outer wall 33 of the stroke limiting member 30, the supporting rod 51 supports and forms a gap between the outer wall 33 of the limiting member and the fixing base plate 53, and the supporting rod 51 can assist in supporting and stabilizing the stroke limiting member 30. In other embodiments, as shown in fig. 3, the supporting and fixing assembly 50 may also include only the supporting rod 51; or as shown in fig. 9, the supporting and fixing assembly 50 includes a base and a fixing base plate 53, and the base 52 is disposed between the fixing base plate 53 and the outer wall 33 of the stroke limiting member 30.
Taking the bending test apparatus provided in fig. 1 or fig. 5 as an example, the test operation process of the bending test apparatus in the embodiment of the present application is as follows:
the method comprises the following steps: a first side of the flexible display panel 40 is fixed to the first jig 10 of the bending test apparatus, and a second side of the flexible display panel 40 is fixed to the second jig 20 of the bending test apparatus.
Step two: the second clamp 20 rotates in the first direction D1, as shown in fig. 2 or fig. 6, the second clamp 20 moves to one side of the clamping plane 11 of the first clamp 10, so that the end of the second edge of the flexible display panel 40 moves toward the end of the first edge of the flexible display panel 40, and the flexible display panel 40 bends inward.
Step three: the second fixture 20 drives the second edge of the flexible display panel 40 to rotate along the second direction D2, so that the curvature of the flexible display panel 40 gradually decreases until the second fixture 20 returns to the original position, and the state shown in fig. 1 or fig. 5 is reached, that is, the second fixture 20 and the first fixture 10 are on the same plane.
In an embodiment of the present application, the second step and the third step may be repeated to implement the inward bending test of the flexible display panel.
In another embodiment, continuing with the bending test apparatus provided in fig. 1 or fig. 5 as an example, after step three, the method further includes:
step four: the second fixture 20 continues to drive the second edge of the flexible display panel 40 to rotate along the second direction D2, as shown in fig. 3 or fig. 7, the second fixture 20 continues to drive the flexible display panel 40 to move toward the other side of the clamping plane 11 of the first fixture 10, that is, the second fixture 20 moves toward the other side of the clamping plane 11 of the first fixture 10, so as to achieve outward bending of the flexible display panel 40.
Step five: the second fixture 20 drives the second edge of the flexible display panel 40 to rotate along the first direction D1, so that the curvature of the flexible display panel 40 gradually decreases until the second fixture 20 returns to the original position, and the state shown in fig. 1 or fig. 5 is reached, that is, the second fixture 20 and the first fixture 10 are on the same plane.
In the embodiment of the present application, the steps two to five, that is, the steps two, three, four, and five may be repeated to implement the inward bending and outward bending tests of the flexible display panel 40.
In another embodiment, only step one, step four and step five may be performed to implement the test of the outward bending of the flexible display panel 40. In yet another embodiment, step four and step five are performed after step one, and step two and step three are performed after step five, to achieve the outward bending and inward bending tests of the flexible display panel 40.
The bending test device of the application can limit the track of the second clamp 20 moving to the two sides of the clamping plane 11 of the first clamp 10 respectively by arranging the stroke limiting piece, can enable the second clamp to move in an arc shape towards the two sides of the clamping plane 11 of the first clamp 10, can drive the flexible display panel 40 to bend towards two sides, and can meet the test requirements of various bending forms such as inward bending and outward bending of the flexible display panel 40.
The above embodiments are merely examples and are not intended to limit the scope of the present disclosure, and all modifications, equivalents, and flow charts using the contents of the specification and drawings of the present disclosure or those directly or indirectly applied to other related technical fields are intended to be included in the scope of the present disclosure.
Claims (10)
1. A bend testing apparatus for testing a flexible member, comprising:
the clamp comprises a first clamp and a second clamp, wherein the first clamp is used for clamping a first edge of the flexible component, the second clamp is used for clamping a second edge of the flexible component, and the second edge is opposite to the first edge;
and the stroke limiting piece is used for limiting the strokes of the second clamp moving to the two sides of the clamping plane of the first clamp respectively, so that the two ends of the second clamp can move towards the two sides of the clamping plane of the first clamp in an arc manner at different speeds, and the flexible part can be driven to bend towards the two sides.
2. The bend testing device of claim 1, wherein the travel limiting member comprises an arcuate track surrounding the first clamp and extending arcuately to either side of a clamping plane of the first clamp, and wherein an end of the second clamp remote from the first clamp is slidably disposed on the arcuate track.
3. The bending test device according to claim 2, wherein the arc-shaped track comprises a circular track, and one end of the second clamp, which is far away from the first clamp, is slidably arranged on the circular track and can reciprocate along the circular track.
4. The bending test device according to claim 3, wherein the first clamp and the second clamp are respectively disposed along a radial direction of the circular track, one end of the second clamp, which is far away from the first clamp, is slidably fixed on the circular track, and one end of the second clamp, which is adjacent to the first clamp, is a free end.
5. The bending test apparatus according to claim 4, wherein an end of the first clamp remote from the second clamp is fixed to the circular rail, and an end of the first clamp adjacent to the second clamp is a free end.
6. The bending test apparatus according to claim 5, wherein the first clamp is disposed perpendicular to a horizontal plane.
7. The bend testing device of claim 5, wherein the first clamp is spaced apart from the second clamp.
8. The bend testing apparatus of claim 2, comprising:
an electric field generating unit;
the second clamp is made of a metal material, and the electric field generation unit drives the second clamp to slide along the arc-shaped track through an electric field.
9. The bending test apparatus according to claim 2, wherein an end of the second clamp away from the first clamp is slidably disposed on an inner wall of the stroke limiting member, or an end of the second clamp away from the first clamp is slidably disposed on an outer wall of the stroke limiting member, or an end of the second clamp away from the first clamp is slidably disposed on an end surface of the stroke limiting member.
10. The bend testing apparatus of claim 2, comprising:
and the supporting and fixing assembly is connected with the stroke limiting piece and is used for supporting and fixing the stroke limiting piece.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110132241.1A CN112985979A (en) | 2021-01-31 | 2021-01-31 | Bending test device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110132241.1A CN112985979A (en) | 2021-01-31 | 2021-01-31 | Bending test device |
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| CN112985979A true CN112985979A (en) | 2021-06-18 |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103558093A (en) * | 2013-09-13 | 2014-02-05 | 友达光电股份有限公司 | Flexible board bending test device and test method |
| CN107631861A (en) * | 2017-08-28 | 2018-01-26 | 武汉华星光电半导体显示技术有限公司 | Flexible display apparatus bends test equipment and system |
| CN107884283A (en) * | 2017-10-25 | 2018-04-06 | 武汉华星光电半导体显示技术有限公司 | A kind of flexible OLED bending test apparatus |
| CN209416663U (en) * | 2019-03-12 | 2019-09-20 | 上海和辉光电有限公司 | A kind of flexible screen bending clamp |
| CN110631891A (en) * | 2018-06-21 | 2019-12-31 | 上海和辉光电有限公司 | Bending test fixture |
| CN112198064A (en) * | 2020-08-17 | 2021-01-08 | 苏州华兴源创科技股份有限公司 | Flexible screen bending test device and test method |
| CN112198065A (en) * | 2020-08-27 | 2021-01-08 | 京东方科技集团股份有限公司 | Bending test equipment and bending test method for flexible screen |
-
2021
- 2021-01-31 CN CN202110132241.1A patent/CN112985979A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103558093A (en) * | 2013-09-13 | 2014-02-05 | 友达光电股份有限公司 | Flexible board bending test device and test method |
| CN107631861A (en) * | 2017-08-28 | 2018-01-26 | 武汉华星光电半导体显示技术有限公司 | Flexible display apparatus bends test equipment and system |
| CN107884283A (en) * | 2017-10-25 | 2018-04-06 | 武汉华星光电半导体显示技术有限公司 | A kind of flexible OLED bending test apparatus |
| CN110631891A (en) * | 2018-06-21 | 2019-12-31 | 上海和辉光电有限公司 | Bending test fixture |
| CN209416663U (en) * | 2019-03-12 | 2019-09-20 | 上海和辉光电有限公司 | A kind of flexible screen bending clamp |
| CN112198064A (en) * | 2020-08-17 | 2021-01-08 | 苏州华兴源创科技股份有限公司 | Flexible screen bending test device and test method |
| CN112198065A (en) * | 2020-08-27 | 2021-01-08 | 京东方科技集团股份有限公司 | Bending test equipment and bending test method for flexible screen |
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