CN112485109B - Testing device and system for display panel - Google Patents
Testing device and system for display panel Download PDFInfo
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- CN112485109B CN112485109B CN202011232201.6A CN202011232201A CN112485109B CN 112485109 B CN112485109 B CN 112485109B CN 202011232201 A CN202011232201 A CN 202011232201A CN 112485109 B CN112485109 B CN 112485109B
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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
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive 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
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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
- G01N2203/0016—Tensile or compressive
- G01N2203/0017—Tensile
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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 discloses display panel testing arrangement and system includes: the base is used for being fixedly connected with at least part of the display panel; the testing assembly comprises a rotatable plate and a drawing device; the rotatable plate is rotatably connected with the base so as to bend the area to be measured of the display panel to a preset angle; the drawing device is arranged on the rotatable plate and used for fixing the area to be tested of the display panel and providing tension for the area to be tested so as to perform drawing test when the area to be tested is bent to a preset angle. By means of the mode, the drawing force of the display panel in the bending process can be simulated, and the accuracy of drawing test data is improved.
Description
Technical Field
The present application relates to the field of display technologies, and in particular, to a test apparatus and system for a display panel.
Background
With the development of display technology, public requirements for high-screen-ratio screens are higher and higher. Compared with the conventional mobile device, the mobile device with the high screen ratio has a narrower frame and a wider display area, and has a smaller overall size under the same screen size.
The Pad-bonding technology is one of key technologies for realizing the narrow frame of the flexible OLED display panel. In the process of the Pad-bonding process of the flexible OLED display panel, bending of a Bending area is involved. In the process of bending, often can cause the pulling force to the district of buckling, lead to display panel to appear the circuit crackle after the pulling force surpasss a definite value easily to lead to display panel reliability to descend. Therefore, the drawing test of the Bending area is an effective way to evaluate the tolerance of the display panel in the Pad-bonding process.
The inventor of this application in long-term research and development process, finds that display panel is comparatively complicated at the in-process tolerance condition of buckling, draws testing arrangement and is difficult to simulate actual conditions, leads to drawing test data inaccurate.
Disclosure of Invention
The technical problem that this application mainly solved provides one kind, can simulate the drawing force that the display panel received among the bending process, improves the accuracy of drawing test data.
In order to solve the technical problem, the application adopts a technical scheme that: provided is a display panel testing apparatus including: the base is used for being fixedly connected with at least part of the display panel; the testing assembly comprises a rotatable plate and a drawing device; the rotatable plate is rotatably connected with the base so as to bend the area to be measured of the display panel to a preset angle; the drawing device is arranged on the rotatable plate and used for fixing the area to be tested of the display panel and providing tension for the area to be tested so as to perform drawing test when the area to be tested is bent to a preset angle.
The rotatable plate is connected with the base through a first driving shaft; the testing device also comprises a first driving device; the first driving device acts on the rotatable plate through the first driving shaft to drive the rotatable plate to rotate to a preset angle; preferably, the preset angle is in the range of 0 to 180 degrees.
The drawing device comprises a clamping plate, a second driving shaft and a second driving device; the clamping plate is used for fixing the area to be detected; the second driving shaft is fixed on the first surface of the rotatable plate and is connected with the clamping plate through a transmission belt; the second driving device is used for driving the second driving shaft to rotate so as to enable the driving belt to pull the clamping plate to move; preferably, the belt is parallel to the first surface of the rotatable plate with a predetermined interval.
The drawing device also comprises a tension measuring unit which is arranged on the second driving shaft and used for measuring the tension applied to the area to be measured; preferably, the drawing device further includes a distance measuring unit for measuring a moving distance of the nip plate.
Wherein, the length of splint is no less than the width of waiting to survey the district.
Wherein, splint include first splint and second splint: the first clamping plate is fixedly connected with the transmission belt; the second clamping plate is movably connected with the first clamping plate, and the opposite surfaces of the first clamping plate and the second clamping plate are provided with sawtooth structures.
The base comprises a cover plate and a base body, and the cover plate is connected with the base body in a matched mode and used for clamping the display panel.
Wherein, one side of the cover plate facing the base body is provided with an empty avoiding groove for accommodating the bending part of the display panel; preferably, the sidewall of the clearance groove matches with the shape of the curved portion of the display panel.
Wherein, the base is provided with adsorption equipment for adsorb and fixed display panel.
In order to solve the above technical problem, another technical solution adopted by the present application is: provided is a display panel test system including: the display panel testing device and the controller; the controller is coupled with the testing device and used for controlling the rotating angle of the rotatable plate in the drawing testing device and the tension value of the drawing device.
The beneficial effect of this application is: being different from the situation of the prior art, the application discloses a display panel testing device, includes: a base and a test assembly; the testing assembly comprises a rotatable plate and a drawing device; the rotatable plate is rotatably connected with the base so as to bend the area to be detected of the display panel to a preset angle; the drawing device is arranged on the rotatable plate and used for fixing the area to be tested of the display panel and providing tension for the area to be tested so as to conduct drawing test when the area to be tested is bent to a preset angle. But set up the rotatable board in testing arrangement for the area to be measured of display panel can be rotated and carry out the drawing test after the angle of difference, thereby can obtain the drawing test data of display panel in the different stages of the in-process of buckling. The testing device can obtain more comprehensive tolerance data of the display panel and provides more accurate reference basis for tension setting in the Pad-bonding technological process.
Drawings
FIG. 1 is a schematic structural diagram of a display panel testing apparatus according to an embodiment of the present application;
FIG. 2 is a schematic diagram of a display panel testing apparatus according to another embodiment of the present application;
FIG. 3 is a schematic cross-sectional view of a base according to an embodiment of the present application;
FIG. 4 is a schematic top view of a base according to an embodiment of the present application;
FIG. 5 is a schematic structural diagram of a drawing apparatus according to an embodiment of the present application;
FIG. 6 is a cross-sectional structural view of a splint according to an embodiment of the present application;
FIG. 7 is a schematic top view of a second clamping plate according to an embodiment of the present application;
FIG. 8 is a side view of a second cleat according to an embodiment of the present application;
FIG. 9 is a schematic diagram of a system for testing a display panel according to an embodiment of the present application;
fig. 10 is a schematic diagram of a display panel structure according to an embodiment of the application.
Detailed Description
In order to make the purpose, technical solution and effect of the present application clearer and clearer, the present application is further described in detail below with reference to the accompanying drawings and examples.
The problem of inaccurate drawing test data caused by the fact that the drawing test device is difficult to simulate actual conditions in the prior art is solved. The application discloses display panel's testing arrangement includes: a base and a test assembly; the base is used for being fixedly connected with at least part of the display panel; the testing assembly comprises a rotatable plate and a drawing device; the rotatable plate is rotatably connected with the base so as to rotate the area to be detected of the display panel to a preset angle; the drawing device is arranged on the rotatable plate and used for fixing the area to be tested of the display panel and providing tension for the area to be tested so as to conduct drawing test when the area to be tested rotates to a preset angle. The testing device can measure the tolerance tension of the display panel at different bending angles, so that the drawing tolerance conditions of the display panel at different stages in the bending process can be obtained, and the accuracy of drawing test data is effectively improved.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a display panel testing apparatus according to an embodiment of the present application. The display panel testing device is used for drawing testing when the display panel is bent. The display panel testing apparatus 10 includes a base 100 and a testing assembly 200.
The base 100 is used to be fixedly connected with at least a portion of the display panel 20. Specifically, the base 100 may be used to be fixedly connected to at least a portion of the non-bendable region of the display panel 20. It is also understood that at least a partial region of the display panel 20 is fixed to the base 100 so that the display panel 20 is not displaced with respect to the base 100. The fixing connection mode can be various, such as adsorption fixing or clamping fixing.
The region to be measured of the display panel 20 may refer to a bending region of the display panel 20. Referring to fig. 10, the region a is a region to be measured of the display panel 20. The display panel 20 includes a display region and a non-display region, the non-display region of the display panel 20 may be partially bent to the back of the display region, and the region a to be measured of the display panel 20 is a region in the non-display region where bending occurs. The bent portion may be an extension of a substrate of the display panel, and may also be a Flexible Printed Circuit (FPC) bonded on the substrate of the non-display area of the display panel 20, and the Flexible Circuit may be bent to a rear surface of the display panel 20. In the Pad-bonding process, the display panel 20 needs to be bent, and the circuit inside the Bending area may be cracked due to excessive drawing force during the Bending process. The rotatable plate is rotatably connected to the base 100 to rotate the region to be measured of the display panel 20 to a predetermined angle.
The testing assembly 200 includes a rotatable plate 210 and a pulling apparatus 220. The region to be tested of the display panel 20 is located on the rotatable plate 210. Specifically, the rotatable plate 210 may be rotated with respect to the base 100, and the rotation angle can be controlled and can be fixed. Since the region to be measured of the display panel 20 is located on the rotatable plate 210, the rotatable plate 210 can rotate the region to be measured to a predetermined angle. The preset angle is such that the angle between the rotatable plate 210 and a horizontal line extending from the base is at a certain angle. The preset angle can be determined according to the test requirement.
The drawing device 220 is disposed on the rotatable plate 210, and is used for fixing the region to be tested of the display panel 20 and providing a pulling force to the region to be tested, so as to perform a drawing test when the region to be tested rotates to a preset angle. The drawing device 220 is at least partially disposed at one side of the rotatable plate 210 for placing the region to be measured. The drawing device 220 may perform a drawing test when the region to be tested is bent to different angles, so as to obtain drawing tolerance test data at each stage in the bending process of the region to be tested.
In use, the display panel 20 is fixed on the base 100, the area to be measured of the display panel 20 is placed on the rotatable plate 210, and the area to be measured is fixed by the drawing device 220. The rotatable plate 210 is rotated to a preset angle and then fixed, and the drawing device 220 provides a pulling force for the area to be tested to perform a drawing test.
As mentioned above, the pull-out test is to apply a pulling force to the display panel in the region to be tested after the display panel is bent to a predetermined angle, and the pulling force is applied to the display panel to test the stress condition of the display panel in the bent state, and the applied force includes the bending stress and the pulling force. It should be noted that the pull test is different from the bending test, and specifically, the stress of the display panel during the pull test is different from the stress of the display panel during the bending test. When the display panel is subjected to a bending test, the force applied to the display panel is a force for bending the display panel. In the drawing test, the display panel is not only subjected to the bending force, but also to a tensile force parallel to the area to be tested of the display panel. The purpose of the bending test is to test the performance of the display panel, which is resistant to multiple bending, and the purpose of the drawing test in this application is to test the performance of the display panel after being subjected to the tensile force.
The rotatable plate 210 is disposed in the testing apparatus 10, so that the region to be tested of the display panel 20 can be rotated to different angles for performing the pull-out test, and the pull-out test data of the display panel 20 at different stages in the bending process can be obtained. By using the testing device 10, more comprehensive tolerance data of the display panel 20 can be obtained, and more accurate reference basis is provided for tension setting in the Pad-bonding process.
Further, referring to fig. 2, the rotatable plate 210 is coupled to the base 100 via a first drive shaft 230 100. The first driving shaft 230 may be disposed at a side perpendicular to a surface of the base 100 for fixing the display panel, or at a surface of the base 100 for fixing the display panel. The first driving shaft 230 is fixedly connected to the base 100 and can rotate, and the connection mode can be detachable or non-detachable, such as welding, screwing, clamping and the like. The rotation axis of the first driving shaft 230 is perpendicular to the bending direction of the region to be tested in use, so that the testing state of the region to be tested can be matched with the bending state of the region to be tested in use. Moreover, when the rotatable plate 210 drives the region to be measured to bend, the bending angles of the two sides of the region to be measured can be kept consistent, and single-side distortion is prevented.
The test apparatus 10 further includes a first driving device 240; the first driving device 240 acts on the rotatable plate 210 through the first driving shaft 230 to drive the rotatable plate 210 to rotate to a preset angle. Wherein the predetermined angle is a specific angle between the rotatable plate 210 and a horizontal line extending from the base. The first driving device 240 may be any device capable of providing a driving force, for example, a motor. The first driving device 240 may provide rotational power to the first driving shaft 230. The rotatable plate 210 is fixedly connected to the first driving shaft 230, and the first driving shaft 230 can drive the rotatable plate 210 to rotate when rotating. The first driving shaft 230 may be a power shaft of a motor, or a shaft connected to the power shaft of the motor.
Further, the preset angle is within the range of 0-180 degrees. The preset angle may also be in the range of 0-90 degrees. The variation trend of the drawing endurance performance of the display panel in the range of 0-90 degrees is similar to that in the range of 90-180 degrees. Therefore, more accurate pull test data can be obtained when the rotation range of the rotatable plate 210 is 0-90 degrees.
The testing assembly 200 may further include a fixing plate 250, wherein the fixing plate 250 is fixedly connected to the base 100, is located at a side of the base 100 where the rotatable plate 210 is located, and is parallel to the base 100. The fixing plate 250 may be used to define the rotatable plate 210 to be maintained in a parallel state with the base when not turned over. The drive shaft 230 may also be disposed on the fixed plate 250, and the rotatable plate 210 may be rotatably coupled with the fixed plate 250.
Referring to fig. 3, fig. 3 is a schematic cross-sectional structure diagram of a base according to an embodiment of the present application. In an embodiment, the base 100 may include a cover plate 110 and a base body 120, and the cover plate 110 is connected with the base body 120 in a matching manner for clamping the display panel 20. The cover plate 110 is movably connected to the base body 120, such as by screwing or clipping. For example, the cover plate 110 may be provided with a first screw hole 113, the base body 120 may be provided with a second screw hole 121, and the cover plate 110 and the base body 120 are fixedly connected through a screw and the screw hole. The display panel 20 may be fixedly clamped between the cover plate 110 and the base body 120. The cover plate 110 may have a width greater than that of the display panel 20. However, for some display panels 20 with the bent portions 21 on the sides, the width of the cover plate 110 is required to be smaller than that of the display panel 20, so that the cover plate 110 and the base 100 only sandwich the area between the bent portions 21 on the two sides of the display panel 20. Alternatively, when the width of the cover plate 110 is greater than the width of the display panel 20, a clearance structure is disposed on a surface of the cover plate 110 facing the base body 120.
In one embodiment, a clearance groove 111 is disposed on a surface of the cover plate 110 facing the base body 120 to accommodate the bending portion 21 of the display panel 20. That is, when the display panel 20 is fixed to the chassis 100, the bending portion 21 is bent in a direction away from the chassis body 120. The side of the cover plate 110 facing the base body 120 is provided with the clearance groove 111, so that the cover plate 110 can be placed to press the bending portion 21, and the display panel 20 is not uniform in hand, which causes the display panel 20 to be damaged.
Further, the sidewall of the clearance groove 111 matches the shape of the curved portion 21 of the display panel 20. Specifically, the sidewall of the clearance groove 111 is provided with a chamfer 112, and the radian of the chamfer 112 matches the bending degree of the bending portion 21 of the display panel 20. Therefore, when the display panel 20 is fixed, the cover plate 110 and the display panel 20 can be completely released, so that the bending area of the display panel 20 can be stressed and stressed uniformly. Furthermore, the pressure of the cover plate 110 on the display panel 20 is uniformly distributed during the drawing test, so that the drawing test result is more accurate.
The base can also fix the display panel through other modes. Referring to fig. 4, fig. 4 is a schematic top view of a base according to an embodiment of the present disclosure. In one embodiment, the base 100 is provided with an absorption device 130 for absorbing and fixing the display panel. The adsorption device 130 may be located at the base body. For example, the suction device 130 may be a suction cup, and the display panel may be suction-fixed to the base 100 by the suction cup. For another example, the suction device 130 may be a through hole connected to a vacuum device, and after the display panel is placed on the through hole, the vacuum device draws air to form a negative pressure, thereby sucking and fixing the display panel to the chassis 100. The suction device 130 may be a plurality of suction devices, and is arranged in the base 100. The distribution position of the adsorption device 130 may be determined according to the position of the test component. Of course, the chassis 100 may be provided with both the cover plate and the suction device 130, so that the display panel may be more firmly fixed.
Specific structure of the drawing device, reference may be made to fig. 5-8, and fig. 5 is a schematic structural diagram of the drawing device according to an embodiment of the present application. Fig. 6 is a cross-sectional structural view of a splint according to an embodiment of the present application. Fig. 7 is a schematic top view of a second clamping plate according to an embodiment of the present application. Fig. 8 is a side view of a second cleat according to an embodiment of the present application. The drawing means may include a nip plate 221, a belt 222, a second driving shaft 223 and a second driving means 224.
In one embodiment, the clamping plate 221 is used for fixing the region to be tested of the display panel. The length of the clamping plate 221 is not less than the width of the region to be measured. Wherein the length of the clamping plate 221 may refer to the length of the clamping plate 221 in the axial direction of the first driving shaft 230. The region to be measured may be a bending region or an FPC of a non-display region of the display panel, and the width of the region to be measured may be a width of the non-display region or a width of the FPC, that is, a dimension in a direction perpendicular to a bending direction of the region to be measured. The length of the clamping plate 221 is not less than the width of the region to be tested, so that the region to be tested can be completely fixed in the clamping plate 221, and the pulling force received by the two sides of the region to be tested is the same when the pulling test is performed. Namely, the stress of each part is the same in the direction perpendicular to the bending direction of the area to be measured.
In one embodiment, clamping plate 221 includes a first clamping plate 2211 and a second clamping plate 2212. The first clamping plate 2211 is closer to the rotatable plate 210 than the second clamping plate 2212, and the first clamping plate 2211 is fixedly connected to the driving belt 222. The belt 222 provides tension to the first clamp plate 2211, pulling the first clamp plate 2211 into motion. The second clamping plate 2212 is movably connected with the first clamping plate 2211, and the region to be measured can be clamped between the first clamping plate 2211 and the second clamping plate 2212. The movable connection between the first clamping plate 2211 and the second clamping plate 2212 may mean that the second clamping plate 2212 may be at least partially separated from the first clamping plate 2211 to place the region to be tested between the first clamping plate 2211 and the second clamping plate 2212, and then the first clamping plate 2211 and the second clamping plate 2212 are fixed to fix the region to be tested. The first clamping plate 2211 and the second clamping plate 2212 can be connected in a threaded manner or a clamping manner. As shown in fig. 6, the first clamping plate 2211 and the second clamping plate 2212 are fixedly connected by fastening bolts 2213.
Further, the opposing faces of the first and second clamping plates 2211 and 2212 are provided with serrations 2214, as shown in fig. 7-8. The sawtooth structure 2214 can make the clamping plate 221 more firmly fixed during the fixing process, thereby increasing the accuracy of the tensile force applied to the region to be measured. The sawtooth structures 2214 can be made of a deformable material with high friction, such as a rubber material. Therefore, the region to be measured can be protected while the fixation firmness is improved, so that the region to be measured cannot be damaged due to the pressure of the clamping plate 221.
With continued reference to fig. 5, in one embodiment, the second driving shaft 223 is fixed to the first side b of the rotatable plate 210, and the second driving shaft 223 is connected to the clamping plate 221 through a driving belt 222. The second driving shaft 223 is connected to the belt 222, and the second driving shaft 223 rotates to move the belt 222. The first side b refers to a side of the rotatable plate 210 on which the display panel is placed.
Further, the driving belts 222 are parallel to the first face b of the rotatable plate 210 with a predetermined interval. The driving belt 222 is disposed at one side of the first face b of the rotatable plate 210, and the driving belt 222 has a predetermined interval with the first face b of the rotatable plate 210 such that the driving belt 222 does not contact the rotatable plate 210. Therefore, the transmission belt 222 does not rub against the rotatable plate 210 to generate frictional resistance, which affects the tensile force applied to the clamping plate 221. The surface of the rotatable plate 210 may also be a smooth surface. Thus, even if the belt 222 rubs against the rotatable plate 210, the frictional resistance will be small and the influence on the tensile force will be small.
In one embodiment, the second driving device 224 is used to drive the second driving shaft 223 to rotate so that the driving belt 222 pulls the clamping plate 221. The second driving device 224 may be disposed on the rotatable plate 210 or may not be disposed on the rotatable plate 210. The second driving device 224 may be any device capable of providing a driving force, for example, a motor. The second drive shaft 223 may be a power shaft of a motor or a shaft connected to the power shaft of the motor.
In an embodiment, the drawing apparatus further includes a tension measuring unit (not shown) provided to the second driving shaft 223 for measuring a tension applied to the area to be measured. The tension measuring unit may obtain the tension applied to the region to be measured by detecting the tension applied to the second driving shaft 223. The tension data born by the to-be-detected area can be more accurately determined by utilizing the tension measuring unit. The tension measuring unit may be any suitable tension measuring device, such as a tension sensor.
Further, the drawing apparatus further includes a distance measuring unit (not shown) for measuring a moving distance of the nip plate 221. The distance measuring unit may also be provided on the second driving shaft 223. Since the region to be measured is deformed after receiving the tensile force, the distance measuring unit can detect the moving distance of the clamping plate 221, that is, the stretching length of the region to be measured. The deformation condition of the non-display area of the display panel after being subjected to the tensile force is also effective data for evaluating the performance of the display panel.
The application also provides a display panel testing system. Referring to fig. 9, fig. 9 is a schematic structural diagram of a display panel testing system according to an embodiment of the present application. The display panel testing system includes the display panel testing apparatus 10 and the controller 30.
In one embodiment, the controller 30 is coupled to the test apparatus 10 for controlling the rotation angle of the rotatable plate 210 and the pulling force value of the pulling apparatus 220 in the pulling test apparatus 10.
Specifically, the controller 30 may include an input output system, a rotatable plate control module, and a drawing device control module. After the preset angle data that the rotatable plate 210 needs to be rotated and the tension data that the drawing device 220 needs to provide are input through the input/output system, the rotatable plate control module in the controller 30 may send a control signal to the first driving device 240, and the drawing device control module may send a control signal to the second driving device 224, so as to control the rotation angle of the rotatable plate 210 and the tension of the drawing device 220. The controller 30 may also output actual tension data of the drawing device 220 or the moving distance of the area to be measured.
In summary, when the display panel pull test is performed by using the display panel test system, the specific use steps are as follows: the display panel is fixed to the base 100, the area to be measured is placed on the rotatable plate 210 and the area to be measured is fixed using the clamping plate 221 in the drawing device 220. The rotation angle and the tension value are input to the controller 30, and the controller 30 controls the rotatable plate 210 to rotate to a set angle and controls the drawing device 220 to provide a set tension value, thereby performing a drawing test. After the display panel is pulled out by certain tension at a certain angle, the display panel is taken down, and whether the display panel is damaged or not is observed.
The above description is only for the purpose of illustrating embodiments of the present application and is not intended to limit the scope of the present application, and all modifications of equivalent structures and equivalent processes, which are made by the contents of the specification and the drawings of the present application or are directly or indirectly applied to other related technical fields, are also included in the scope of the present application.
Claims (12)
1. A display panel testing apparatus, comprising:
the base is used for being fixedly connected with at least part of the display panel; the base comprises a cover plate and a base body, and the cover plate is connected with the base body in a matched mode and used for clamping the display panel; one side of the cover plate facing the base body is provided with a clearance groove for accommodating the bending part of the display panel;
the testing assembly comprises a rotatable plate and a drawing device; the rotatable plate is rotatably connected with the base so as to bend the area to be detected of the display panel to a preset angle; the drawing device is arranged on the rotatable plate and used for fixing the area to be tested of the display panel and providing tension for the area to be tested so as to perform drawing test when the area to be tested is bent to the preset angle.
2. The display panel testing apparatus of claim 1, wherein the rotatable plate is connected to the base by a first drive shaft; the testing device further comprises a first driving device;
the first driving device acts on the rotatable plate through the first driving shaft to drive the rotatable plate to rotate to the preset angle.
3. The display panel testing apparatus according to claim 2,
the preset angle is within the range of 0 to 180 degrees.
4. The display panel testing apparatus of claim 1, wherein the drawing means comprises:
the clamping plate is used for fixing the area to be detected;
a second driving shaft fixed to a first surface of the rotatable plate, the second driving shaft being connected to the chucking plate by a driving belt;
and the second driving device is used for driving the second driving shaft to rotate so that the driving belt pulls the clamping plate to move.
5. The display panel testing apparatus of claim 4,
the driving belt is parallel to the first face of the rotatable plate and has a predetermined interval.
6. The apparatus for testing a display panel according to claim 4, wherein the drawing apparatus further comprises a tension measuring unit disposed at the second driving shaft for measuring a tension applied to the region to be tested.
7. The display panel testing apparatus of claim 6,
the drawing device further comprises a distance measuring unit for measuring the moving distance of the clamping plate.
8. The display panel testing apparatus of claim 4, wherein a length of the clamping plate is not less than a width of the region to be tested.
9. The display panel testing apparatus of claim 8, wherein the clamping plate comprises a first clamping plate and a second clamping plate:
the first clamping plate is fixedly connected with the transmission belt;
the second clamping plate is movably connected with the first clamping plate, and the opposite surfaces of the first clamping plate and the second clamping plate are provided with sawtooth structures.
10. The apparatus for testing a display panel according to claim 1, wherein a sidewall of the clearance groove matches a shape of a bent portion of the display panel.
11. The display panel testing apparatus of claim 1, wherein the base is provided with an adsorption device for adsorbing and fixing the display panel.
12. A display panel testing system, comprising:
the display panel testing apparatus of any one of claims 1 to 11;
and the controller is coupled with the testing device and is used for controlling the rotating angle of the rotatable plate in the drawing testing device and the tension value of the drawing device.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011232201.6A CN112485109B (en) | 2020-11-06 | 2020-11-06 | Testing device and system for display panel |
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| CN202011232201.6A CN112485109B (en) | 2020-11-06 | 2020-11-06 | Testing device and system for display panel |
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| CN112485109A CN112485109A (en) | 2021-03-12 |
| CN112485109B true CN112485109B (en) | 2023-04-07 |
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| CN113188904B (en) * | 2021-04-08 | 2023-10-03 | 深圳市华星光电半导体显示技术有限公司 | Testing device and testing method |
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| CN200975965Y (en) * | 2006-12-02 | 2007-11-14 | 比亚迪股份有限公司 | Crib crimper for flexible printed circuit board |
| KR102072061B1 (en) * | 2013-05-28 | 2020-02-03 | 삼성디스플레이 주식회사 | Apparatus for bending substrate, apparatus and method for inspecting bended substrate |
| CN107690564A (en) * | 2016-11-10 | 2018-02-13 | 深圳市柔宇科技有限公司 | Bend testing apparatus |
| KR20180057897A (en) * | 2016-11-23 | 2018-05-31 | 삼성전자주식회사 | Evaluating device of flexural property of material, and evaluation method using thereof |
| KR101843874B1 (en) * | 2017-01-09 | 2018-03-30 | (주)플렉시고 | Folding device for flexible material durability evaluation |
| CN107014700B (en) * | 2017-04-25 | 2019-11-08 | 中国电子产品可靠性与环境试验研究所 | Flexing Apparatus |
| KR20190010809A (en) * | 2017-07-21 | 2019-01-31 | 주식회사 이노테크 | Bending test apparatus for flexible display |
| 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 |
| CN108225938B (en) * | 2018-01-31 | 2020-09-25 | 北京京东方显示技术有限公司 | Bending test device and bending test method |
| CN209356328U (en) * | 2019-01-17 | 2019-09-06 | 北京京东方显示技术有限公司 | A kind of bending test apparatus |
| CN211347745U (en) * | 2019-11-29 | 2020-08-25 | 昆山国显光电有限公司 | Flexible screen stiffness testing device |
| CN111157358B (en) * | 2020-01-10 | 2023-06-23 | 昆山国显光电有限公司 | Reel and flexible screen body testing device |
| CN111257139B (en) * | 2020-02-24 | 2022-07-05 | 昆山工研院新型平板显示技术中心有限公司 | Bending test device |
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