Sample extraction device for flexible display panel

Abstract

The utility model discloses a kind of sample extraction devices for flexible display panel, including mounting seat, cutting assembly and suction cup, cutting assembly includes driving part, heating part and the cutting tool of annular arrangement, heating part is provided on cutting tool, heating part can heat treatment to cutting tool, driving part is set on mounting seat, driving part is connected with cutting tool transmission, driving part can drive cutting tool to move cutting to be cut area along vertical direction to obtain sample;Suction cup is set on the driving end of driving part, and driving part can drive suction cup and sample abutment.The utility model discloses a kind of sample extraction devices for flexible display panel, the setting of cutting assembly, make cutting tool under the driving of driving part can cut to be cut area of flexible display panel to obtain sample, and by heating part to the heating of cutting tool, make cutting tool more smoothly cut into flexible display panel, easy to operate and high safety.

Description

Technical Field

[0001] This utility model relates to the field of display device manufacturing technology, and in particular to a sample extraction device for flexible display panels. Background Technology

[0002] With the continuous development of display technology, flexible display panels are being used more and more widely, for example in products such as mobile phones, computers, tablets, e-readers, and information kiosks. During the production process, flexible display panels may develop defects. Therefore, it is necessary to cut these defects into small samples for testing and analysis to determine the cause of the defects and to make adaptive improvements to the production process.

[0003] Reference Figure 1 As shown, the existing sample extraction method usually involves the operator placing the flexible display panel 100′ on the worktable 1′, using a utility knife 2′ to delineate the defect area 101′ around the defect, and using a rubber mallet 3′ to push out the delineated defect area 101′ from the back to obtain a small sample containing the defect.

[0004] The existing technology has the following shortcomings: the utility knife 2' may cut the operator during the slicing process, and there is a risk of fragments being ejected when the rubber mallet 3' lifts the sample, which affects the safety of the operation. In addition, the use of the rubber mallet 3' can easily cause the sample to wrinkle or break, affecting the quality of the extracted sample. Utility Model Content

[0005] The purpose of this invention is to provide a sample extraction device for flexible display panels, which has a simple structure, high safety in the use of its cutting components, and good quality and integrity of the obtained sample.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] A sample extraction device for flexible display panels is provided, comprising a mounting base, a cutting assembly, and a suction cup. The cutting assembly includes a driving component, a heating component, and a ring-shaped cutting blade. The cutting blade is positioned vertically above the area to be cut in the flexible display panel. The heating component is mounted on the cutting blade and is capable of heating the cutting blade. The driving component is mounted on the mounting base and is drively connected to the cutting blade. The driving component drives the cutting blade to move vertically to cut the area to be cut to obtain the sample. The suction cup is located at the driving end of the driving component and is capable of driving the suction cup to contact the sample. The suction cup is used to adsorb the sample.

[0008] As a preferred embodiment of a sample extraction device for flexible display panels, the cutting blade is slidably mounted on the mounting base along the vertical direction.

[0009] As a preferred embodiment of a sample extraction device for a flexible display panel, the mounting base includes a mounting plate and an annular fixing frame. The fixing frame has a mounting cavity and a receiving cavity extending through the vertical direction. The mounting cavity surrounds the periphery of the receiving cavity. The fixing frame has a first side that abuts against the flexible display panel and a second side that is opposite to the first side along the vertical direction. The receiving cavity forms a mounting opening through the first side. The cutting tool is slidably disposed in the mounting cavity, and the cutting tool can extend out of the mounting opening to cut the area to be cut under the action of the driving member. The mounting plate is disposed on the second side, the driving member is disposed on the mounting plate, and the suction cup is located in the receiving cavity.

[0010] As a preferred embodiment of a sample extraction device for flexible display panels, the cavity wall of the receiving cavity is provided with a limiting groove communicating with the mounting cavity. The length of the limiting groove extends along the vertical direction. The cutting tool has a connecting part protruding on the side adjacent to the receiving cavity. The connecting part can pass through the limiting groove and connect to the driving end of the driving member.

[0011] As a preferred embodiment of a sample extraction device for flexible display panels, the limiting groove has a first sidewall and a second sidewall arranged along the vertical direction, and the connecting portion is slidably disposed between the first sidewall and the second sidewall.

[0012] As a preferred embodiment of a sample extraction device for flexible display panels, the cutting assembly further includes elastic elements, and the mounting cavity along the vertical direction has a third sidewall away from the flexible display panel. The third sidewall is connected to the cutting blade through a plurality of elastic elements, and the elastic elements have a tendency to always pull the cutting blade away from the flexible display panel.

[0013] As a preferred embodiment of a sample extraction device for flexible display panels, the heating element includes a heating coil and an electrode wire. The heating coil is disposed on the cutting tool. A wire passage hole communicating with the mounting cavity is provided on the second side. One end of the electrode wire is connected to the heating coil, and the other end of the electrode wire passes through the wire passage hole and is connected to an external power source.

[0014] As a preferred embodiment of a sample extraction device for flexible display panels, the cutting tool is composed of multiple cutting blades joined end to end.

[0015] As a preferred embodiment of the sample extraction device for flexible display panels, one of the two adjacent cutters has a protruding insertion part and the other has a recessed insertion groove, wherein the insertion part is inserted into the insertion groove.

[0016] As a preferred embodiment of the sample extraction device for flexible display panels, the cutting assembly further includes a temperature sensor, a controller, and a color-changing lamp. The temperature sensor is connected to the cutting blade and is used to sense the temperature of the cutting blade. The temperature sensor is electrically connected to the controller. The color-changing lamp is disposed on the mounting base, and the controller is electrically connected to the color-changing lamp; and / or,

[0017] The sample extraction device for flexible display panels also includes an anti-slip pad, which is provided on the side of the mounting base that abuts against the flexible display panel.

[0018] The beneficial effects of this utility model are as follows: By setting the cutting component, the cutting blade can cut the area to be cut of the flexible display panel under the push of the driving component to obtain the sample. The heating component can reduce the adhesion resistance between the flexible display panel material and the cutting blade, so that the cutting blade can cut into the flexible display panel more smoothly, improve the cutting efficiency of the sample, and reduce the occurrence of inaccurate cutting position or self-injury due to improper operation by the operator. The operation is simple and safe. By combining the driving component to drive the suction cup to adsorb and extract the cut sample, the sample can be completely removed from the flexible display panel, ensuring the extraction quality of the sample and reducing the possibility of the sample wrinkling or breaking due to impact. Attached Figure Description

[0019] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.

[0020] Figure 1 This is a schematic diagram of an existing sample extraction device for flexible display panels;

[0021] Figure 2 This is a schematic diagram of the sample extraction device for flexible display panels according to an embodiment of the present invention;

[0022] Figure 3 This is a cross-sectional view of a sample extraction device for a flexible display panel according to an embodiment of the present invention;

[0023] Figure 4 This is an exploded view of the cutting tool according to an embodiment of the present invention.

[0024] Figure 1 middle:

[0025] 1′, Workbench; 2′, Utility knife; 3′, Rubber mallet; 100′, Flexible display panel; 101′, Defect area;

[0026] Figures 2 to 4 middle:

[0027] 1. Mounting base; 11. Mounting plate; 12. Fixing frame; 121. Mounting cavity; 1211. Third side wall; 122. Receiving cavity; 123. Second side; 124. First side; 125. Mounting port; 126. Limiting groove; 1261. First side wall; 1262. Second side wall; 127. Wire hole; 2. Cutting assembly; 21. Driving component; 22. Cutting tool; 221. Connecting part; 222. Cutting blade; 223. Insertion part; 224. Insertion groove; 23. Elastic component; 3. Suction cup. Detailed Implementation

[0028] The advantages and features of this invention, as well as methods of implementing them, will become apparent from the following detailed description of the embodiments in conjunction with the accompanying drawings. However, this invention is not limited to the embodiments disclosed below, but can be implemented in various different forms. These embodiments are provided merely to complete the disclosure of this invention and to enable those skilled in the art to fully understand its scope, which is defined only by the scope of the claims. The same reference numerals denote the same constituent elements throughout the specification.

[0029] The present invention will now be described in detail with reference to the accompanying drawings.

[0030] like Figures 2 to 4 As shown, the sample extraction device for flexible display panels according to an embodiment of the present invention includes a mounting base 1, a cutting component 2, and a suction cup 3. The cutting component 2 includes a driving member 21, a heating member, and a cutting blade 22 arranged in a ring. The cutting blade 22 is located above the area to be cut on the flexible display panel in the vertical direction (the vertical direction is the Z direction shown in the figure). The heating member is provided on the cutting blade 22 and can heat the cutting blade 22. The driving member 21 is disposed on the mounting base 1 and is connected to the cutting blade 22 in a transmission manner. The driving member 21 can drive the cutting blade 22 to move in the vertical direction to cut the area to be cut to obtain the sample. The suction cup 3 is disposed at the driving end of the driving member 21 and can drive the suction cup 3 to abut against the sample. The suction cup 3 is used to adsorb the sample.

[0031] Understandably, the cutting component 2 enables the cutting blade 22, driven by the drive component 21, to cut the area to be cut in the flexible display panel to obtain the sample. Heating the cutting blade 22 by the heating component reduces the adhesion resistance between the flexible display panel material and the cutting blade 22, allowing the cutting blade 22 to cut into the flexible display panel more smoothly, improving the cutting efficiency of the sample, and reducing the possibility of inaccurate cutting positions or injuries caused by improper operation by the operator. The operation is simple and highly safe. By combining the drive component 21 with the suction cup 3 to adsorb and extract the cut sample, the sample can be completely removed from the flexible display panel, ensuring the quality of sample extraction and reducing the possibility of wrinkling or breakage due to impact. The suction cup 3 is a conventional suction cup with a spring. The spring always tends to drive the suction cup 3 towards the flexible display panel, allowing the suction cup 3 of the sample extraction device for the flexible display panel to adaptively cut flexible display panels of different thicknesses.

[0032] It should be noted that the sample extraction device in this solution is used to extract a local area of ​​the flexible display panel, that is, the cutting component 2 is applied to a flexible display panel on a flexible substrate such as a polymer film, rather than a display panel on a rigid substrate. The flexible display panel includes a flexible substrate, a barrier layer, a buffer layer, pixel circuitry, an organic light-emitting diode (OLED), and a thin-film encapsulation layer deposited on the flexible substrate. The barrier layer and buffer layer are formed by depositing multiple inorganic layers, and the thin-film encapsulation layer is formed by depositing multiple organic layers and multiple inorganic layers alternately one after another. The barrier layer and buffer layer inhibit moisture penetration towards the rear of the OLED, and the thin-film encapsulation layer inhibits moisture penetration towards the front of the OLED, facilitating cutting by the heated cutting tool 22.

[0033] In addition, the heating element should be activated to heat the cutting blade 22. When the temperature of the cutting blade 22 rises to the specified temperature, the driving element 21 is used to move the cutting blade 22 toward the flexible display panel, so that the blade of the cutting blade 22 can cut through the area to be cut. During the process of the driving element 21 moving the cutting blade 22 downward, the suction cup 3 at the driving end of the driving element 21 can simultaneously press against the panel and use the negative pressure provided by the external negative pressure device to adsorb the panel, so that the sample formed by the cut area can be held by the suction cup 3 and moved vertically away from the flexible display panel under the pull of the driving element 21 to extract the sample. Then, the control valve is used to disconnect the suction cup 3 to separate the sample from the suction cup 3, thereby realizing the extraction of the sample. The operation is simple and convenient.

[0034] Furthermore, the cutting tool 22 is slidably mounted on the mounting base 1 in the vertical direction, which can enhance the stability of the movement of the cutting tool 22 and thus ensure the cutting accuracy of the cutting tool 22.

[0035] Specifically, such as Figure 2 and Figure 3 As shown, the mounting base 1 includes a mounting plate 11 and an annular fixing frame 12. The fixing frame 12 has a mounting cavity 121 and a receiving cavity 122 that extends vertically. The mounting cavity 121 surrounds the periphery of the receiving cavity 122. The fixing frame 12 has a first side 124 that abuts against the flexible display panel and a second side 123 that is opposite to the first side 124. The receiving cavity 122 forms a mounting opening 125 through the first side 124. The cutting tool 22 is slidably disposed in the mounting cavity 121, and the cutting tool 22 can extend out of the mounting opening 125 to cut the area to be cut under the action of the driving member 21. The mounting plate 11 is disposed on the second side 123, the driving member 21 is disposed on the mounting plate 11, and the suction cup 3 is located in the receiving cavity 122.

[0036] In other words, the sliding connection between the cutting tool 22 and the cavity wall of the mounting cavity 121 improves the connection stability between the cutting tool 22 and the mounting base 1, as well as the smoothness of the movement of the cutting tool 22. Simultaneously, storing the cutting tool 22 within the mounting cavity 121 prevents it from scratching other structures or personnel. It only needs to be extended from the mounting opening 125 by the drive component 21 when cutting the area to be cut, effectively improving the safety of the cutting assembly 2. Furthermore, the ring-shaped fixing frame 12 structure allows operators to directly observe the cutting accuracy and effect of the sample through the receiving cavity 122. It is worth noting that the mounting base 1 should be made of a high-temperature resistant and heat-insulating material, such as ceramic fiber or polyimide, to reduce heat conduction from the cutting tool 22.

[0037] In this embodiment, the drive component 21 adopts a combination structure of a lead screw and a nut. The nut is embedded in the mounting plate 11, and the lead screw and the nut are rotatably connected. A connecting plate is rotatably connected to one end of the lead screw adjacent to the flexible display panel. The connecting plate is connected to the cutting tool 22 via a connecting rod, and a suction cup 3 is provided on the side of the connecting plate facing the flexible display panel. The operator can manually rotate the lead screw to move the connecting plate in the vertical direction. Manual control has high precision and avoids situations where the cutting tool 22 does not cut in place or cuts excessively. Of course, in some embodiments, the lead screw can be controlled by a motor, or the drive component 21 can be directly adopted as one of a cylinder, hydraulic cylinder, or linear motor.

[0038] Furthermore, such as Figure 2 and Figure 3As shown, a limiting groove 126 communicating with the mounting cavity 121 is provided on the cavity wall of the receiving cavity 122. The length of the limiting groove 126 extends vertically. A connecting part 221 protrudes from the side of the cutting tool 22 adjacent to the receiving cavity 122. The connecting part 221 can pass through the limiting groove 126 and connect to the driving end of the driving member 21. The opening of the limiting groove 126 allows the cutting tool 22 in the mounting cavity 121 to be connected to the connecting plate in the receiving cavity 122 through the connecting part 221 and the connecting rod.

[0039] Preferably, the cutting assembly 2 further includes elastic elements 23. The vertical mounting cavity 121 has a third sidewall 1211 away from the flexible display panel. The third sidewall 1211 is connected to the cutting tool 22 through multiple elastic elements 23. The elastic elements 23 have a tendency to always pull the cutting tool 22 away from the flexible display panel. In this embodiment, the elastic elements 23 can be directly used as tension springs. The tension springs provide a pulling force for the cutting tool 22 to move away from the flexible display panel in the vertical direction, which facilitates the retraction of the cutting tool 22 back into the receiving cavity 122, reduces the output power consumption of the drive unit 21, and saves time and effort.

[0040] Furthermore, the limiting groove 126 has a first sidewall 1261 and a second sidewall 1262 arranged vertically, and the connecting portion 221 is slidably disposed between the first sidewall 1261 and the second sidewall 1262. By limiting the connecting portion 221 through the first sidewall 1261 and the second sidewall 1262, the movement range of the cutting tool 22 is limited, thereby preventing the cutting tool 22 from dislodging from the mounting opening 125 or excessively compressing the tension spring. For example, the first sidewall 1261 is adjacent to the flexible display panel, and the driving member 21 drives the connecting portion 221 to move downward in the vertical direction and stop it on the first sidewall 1261. At this time, a part of the cutting tool 22 is still located in the mounting cavity 121.

[0041] In some embodiments, the heating element includes a heating coil and an electrode wire. The heating coil is disposed on the cutting tool 22, and a wire-passing hole 127 communicating with the mounting cavity 121 is provided on the second side 123. One end of the electrode wire is connected to the heating coil, and the other end of the electrode wire passes through the wire-passing hole 127 and is connected to an external power source. Electrical energy from the external power source is transmitted to the heating coil through the electrode wire, and the heating coil converts the electrical energy into heat energy to raise the temperature of the cutting tool 22 to a preset temperature, making the cutting tool 22 cut the area to be cut more smoothly and the cut edge more even, reducing the possibility of cracks or damage to the sample caused by hard compression.

[0042] Furthermore, such as Figure 3 and Figure 4As shown, the cutting tool 22 comprises multiple cutting blades 222 joined end-to-end. Disassembling the cutting tool 22 into multiple cutting blades 222 and then assembling them reduces production costs and allows for maintenance by replacing individual blades 222 if the tool is partially damaged, thus lowering maintenance costs. In this embodiment, the cutting tool 22 is formed by four cutting blades 222: two blades 222 are spaced apart along a first direction (X direction in the diagram), two blades 222 are spaced apart along a second direction (Y direction in the diagram), and adjacent blades 222 are connected to each other to form a square cutting tool 22. It is worth noting that when the cutting tool 22 is composed of multiple cutting blades 222, each blade 222 should ideally have a connecting part 221, and each connecting part 221 is connected to a connecting plate via a connecting rod.

[0043] Furthermore, one of the two adjacent cutters 222 has a protruding insertion part 223 and the other has a recessed insertion groove 224. The insertion part 223 is inserted into the insertion groove 224, which can ensure a firm connection between the cutters 222, prevent the blades from loosening or misaligning, thereby improving the overall cutting performance and accuracy, while also ensuring the structural stability of the overall cutting tool 22.

[0044] Optionally, since different flexible display panels may have different thicknesses or material settings, the cutting temperature of the cutting blade 22 may vary. Therefore, the cutting assembly 2 also includes a temperature sensor, a controller, and a color-changing lamp. The temperature sensor is connected to the cutting blade 22 and is used to sense the temperature of the cutting blade 22. The temperature sensor is electrically connected to the controller. The color-changing lamp is mounted on the mounting base 1, and the controller is electrically connected to the color-changing lamp. For example, in a certain area of ​​the same batch of flexible display panels, the cutting blade 22 is first heated step by step using a heating element to test the optimal cutting temperature at which the batch of flexible display panels can be cut. At this time, the cutting temperature is fed back to the controller using the temperature controller, and the controller changes the color of the color-changing lamp. For example, it is red before the cutting temperature is reached and green when the cutting temperature is reached. In the subsequent extraction of samples of the same batch of flexible display panels, the heating element must be used to heat the material until the color-changing lamp is green before the drive unit 21 drives the cutting blade 22 to move.

[0045] Preferably, the sample extraction device for the flexible display panel further includes an anti-slip pad, with the anti-slip pad provided on the side of the mounting base 1 that abuts against the flexible display panel. The anti-slip pad serves two purposes: firstly, it prevents rigid collisions between the mounting base 1 and the flexible display panel, ensuring the structural integrity of the flexible display panel and reducing wear on the mounting base 1; secondly, it enhances the friction between the mounting base 1 and the flexible display panel, reducing the likelihood of misalignment during sample extraction.

[0046] Although embodiments of the present invention have been described above with reference to the accompanying drawings, the present invention is not limited to the above embodiments, but can be made in various forms, and those skilled in the art will understand that the present invention can be implemented in other specific forms without changing the technical spirit or essential characteristics of the present invention. Therefore, it should be understood that the above embodiments are exemplary in all respects and not restrictive.

Claims

1. A sample extraction device for flexible display panels, characterized in that, include: Mounting base; A cutting assembly includes a driving component, a heating component, and a ring-shaped cutting blade. The cutting blade is positioned vertically above the area to be cut on the flexible display panel. The heating component is mounted on the cutting blade and can heat the cutting blade. The driving component is mounted on the mounting base and is connected to the cutting blade. The driving component can drive the cutting blade to move along the vertical direction to cut the area to be cut to obtain a sample. A suction cup is disposed at the driving end of the driving component, and the driving component can drive the suction cup to come into contact with the sample. The suction cup is used to adsorb the sample.

2. The sample extraction device for flexible display panels according to claim 1, characterized in that, The cutting tool is slidably mounted on the mounting base along the vertical direction.

3. The sample extraction device for flexible display panels according to claim 2, characterized in that, The mounting base includes a mounting plate and an annular fixing frame. The fixing frame has a mounting cavity and a receiving cavity extending through the vertical direction. The mounting cavity surrounds the periphery of the receiving cavity. The fixing frame has a first side that abuts against the flexible display panel and a second side that is opposite to the first side. The receiving cavity forms a mounting opening through the first side. The cutting tool is slidably disposed in the mounting cavity, and the cutting tool can extend out of the mounting opening to cut the area to be cut under the action of the driving member. The mounting plate is disposed on the second side, the driving member is disposed on the mounting plate, and the suction cup is located in the receiving cavity.

4. The sample extraction device for flexible display panels according to claim 3, characterized in that, The cavity wall of the receiving cavity is provided with a limiting groove that communicates with the mounting cavity. The length of the limiting groove extends along the vertical direction. The cutting tool has a connecting part protruding on the side adjacent to the receiving cavity. The connecting part can pass through the limiting groove and connect to the driving end of the driving member.

5. The sample extraction device for flexible display panels according to claim 4, characterized in that, The limiting groove has a first sidewall and a second sidewall arranged along the vertical direction, and the connecting part is slidably disposed between the first sidewall and the second sidewall.

6. The sample extraction device for flexible display panels according to claim 3, characterized in that, The cutting assembly further includes elastic elements, and the mounting cavity along the vertical direction has a third sidewall away from the flexible display panel. The third sidewall is connected to the cutting tool through a plurality of elastic elements, and the elastic elements have a tendency to always pull the cutting tool away from the flexible display panel.

7. The sample extraction device for flexible display panels according to claim 3, characterized in that, The heating element includes a heating coil and an electrode wire. The heating coil is disposed on the cutting tool. A wire passage hole communicating with the mounting cavity is provided on the second side. One end of the electrode wire is connected to the heating coil, and the other end of the electrode wire passes through the wire passage hole and is connected to an external power source.

8. The sample extraction apparatus for flexible display panels according to any one of claims 1-7, characterized in that, The cutting tool is composed of multiple cutting blades joined end to end.

9. The sample extraction device for flexible display panels according to claim 8, characterized in that, One of the two adjacent cutters has a protruding insertion part and the other has a recessed insertion groove, and the insertion part is inserted into the insertion groove.

10. The sample extraction apparatus for flexible display panels according to any one of claims 1-7, characterized in that, The cutting assembly further includes a temperature sensor, a controller, and a color-changing lamp. The temperature sensor is connected to the cutting blade and is used to sense the temperature of the cutting blade. The temperature sensor is electrically connected to the controller. The color-changing lamp is disposed on the mounting base, and the controller is electrically connected to the color-changing lamp; and / or, The sample extraction device for flexible display panels also includes an anti-slip pad, which is provided on the side of the mounting base that abuts against the flexible display panel.

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