Electrical connection aid for display panels

Abstract

This utility model discloses an electrical connection auxiliary device for a display panel, including a base and a pressing assembly. The base includes a connector and two first limiting plates. The connector has a through hole extending along a first direction. The two first limiting plates are respectively connected to two opposite sides of the connector along a second direction. The two first limiting plates are spaced apart and parallel to each other, forming a receiving space between the connector and the two first limiting plates. The pressing assembly includes a transmission rod, a pressing plate, and a second limiting plate. The transmission rod has a first end and a second end that are opposite to each other. The transmission rod is slidably inserted through the through hole along the first direction. The first end is located inside the receiving space, and the second end is located outside the receiving space. The pressing plate is connected to the first end. The second limiting plate is connected to one side of the pressing plate along a third direction. The second limiting plate is perpendicular to the pressing plate. The surface of the second limiting plate away from the transmission rod is provided with an ink layer, which can improve the electrical connection assembly yield of the first electrical connection part and the second electrical connection part.

Description

Technical Field

[0001] This utility model relates to the field of display panel manufacturing technology, and in particular to an electrical connection auxiliary device for display panels. Background Technology

[0002] During the manufacturing process of a display panel, electrical connections and assembly of the display panel's circuitry are required. Please refer to [link / reference]. Figure 1 Specifically, the display panel includes a first circuit board 100' carrying a power supply circuit and a second circuit board 200' connected to the display function circuit of the display panel. The second circuit board 200' is a flexible circuit board. The first circuit board 100' has a slot 100a', and the bottom of the slot 100a' has a first electrical connection part 100b'. The first circuit board 100' can also be movably connected to a connecting cover 300'. The second circuit board 200' has a second electrical connection part 200a'. When assembling the electrical connections of the display panel circuit, the first electrical connection part 100b', the second electrical connection part 200a', and the connecting cover 300' are first stacked in sequence. Then, the connecting cover 300' is manually pressed into the slot 100a' so that the connecting cover 300' is engaged in the slot 100a', and at the same time, the connecting cover 300' presses the second electrical connection part 200a' tightly against the first electrical connection part 100b'.

[0003] However, since the number of circuits that need to be connected one by one between the first circuit board 100' and the second circuit board 200' is relatively large, the first electrical connection part 100b', the second electrical connection part 200a', and the connecting cover 300' are all relatively long strip structures. Due to manufacturing errors, stacking and placement errors, and uneven force applied during manual pressing, the first electrical connection part 100b' and the second electrical connection part 200a' are prone to large misalignment, resulting in circuit connection errors or even short circuits. When the power is turned on for testing, the display function circuit of the display panel may be damaged. Utility Model Content

[0004] The purpose of this utility model is to provide an electrical connection auxiliary device for a display panel, which can assist in the electrical connection assembly process of the first electrical connection part and the second electrical connection part, so that the force is more uniform when the connection cover is pressed, and the operator can observe and detect the offset of the first electrical connection part and the second electrical connection part without power, thereby improving the electrical connection assembly yield of the first electrical connection part and the second electrical connection part.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] An electrical connection auxiliary device for a display panel is provided, comprising:

[0007] A base, the base including a connector and two first limiting plates, the connector having a through hole extending along a first direction, the two first limiting plates being respectively connected to two opposite sides of the connector along a second direction, the two first limiting plates being spaced apart, opposite to each other, and parallel to each other, forming an accommodating space between the connector and the two first limiting plates; and

[0008] The pressing assembly includes a transmission rod, a pressing plate, and a second limiting plate. The transmission rod has a first end and a second end opposite to each other. The transmission rod is slidably inserted through the through hole along the first direction. The first end is located within the receiving space, and the second end is located outside the receiving space. The pressing plate is connected to the first end. The second limiting plate is connected to the pressing plate on one side along the third direction. The second limiting plate is perpendicular to the pressing plate, and at least part of the second limiting plate is located on the side of the pressing plate away from the transmission rod. The surface of the second limiting plate away from the transmission rod is provided with an ink layer.

[0009] Wherein, the first direction, the second direction, and the third direction are all perpendicular to each other.

[0010] As a preferred embodiment of the electrical connection auxiliary device for the display panel, along the first direction, the protrusion height of the second limiting plate protruding from the side surface of the pressing plate opposite to the transmission rod is d1, where 0.8mm≤d1≤1.5mm.

[0011] As a preferred embodiment of the electrical connection auxiliary device for the display panel, the pressing plate is used to press the first electrical connection part of the first circuit board, the second electrical connection part of the second circuit board, and the connecting cover, which are stacked sequentially, together from the side of the connecting cover away from the first circuit board. Along the first direction, the protrusion height of the second limiting plate relative to the side surface of the pressing plate away from the transmission rod is d1. The connecting cover has a dimension d2, the second electrical connection part has a dimension d3, and the first electrical connection part has a dimension d4, where d2 < d1 ≤ d2 + d3 + d4.

[0012] As a preferred embodiment of the electrical connection auxiliary device for the display panel, the surface of the second limiting plate away from the transmission rod is a pressing surface, and at least the pressing surface is provided with the ink layer. The surface of the second limiting plate close to the pressing plate along the third direction is a limiting surface. The pressing surface and the limiting surface are connected by a clearance surface, so that a missing corner space is formed at the clearance surface.

[0013] As a preferred embodiment of the electrical connection auxiliary device for the display panel, the clearance surface is an inclined surface or a curved surface that is recessed towards the interior of the second limiting plate.

[0014] As a preferred embodiment of the electrical connection auxiliary device for the display panel, the clearance surface includes a first sub-surface and a second sub-surface connected to each other. The pressing surface, the first sub-surface, the second sub-surface and the limiting surface are connected in sequence. The first sub-surface and the second sub-surface form an angle θ, where 90°≤θ≤120°.

[0015] As a preferred embodiment of the electrical connection auxiliary device for the display panel, the electrical connection auxiliary device further includes an elastic reset member connected between the connector and the pressing assembly. The elastic reset member is capable of applying an elastic force along the first direction to the pressing assembly, causing the pressing plate to tend to move toward the connector.

[0016] As a preferred embodiment of the electrical connection auxiliary device for the display panel, the surface of the second limiting plate away from the transmission rod is covered with an elastic layer, and the ink layer is disposed on the surface of the elastic layer.

[0017] As a preferred embodiment of the electrical connection auxiliary device for the display panel, the second limiting plate has an ink reservoir extending in the second direction on the side away from the transmission rod, and the ink layer is partially filled in the ink reservoir.

[0018] As a preferred embodiment of the electrical connection auxiliary device for the display panel, along the third direction, the first end is eccentrically connected to the pressing plate, and the first end is biased towards the side where the second limiting plate is located; and / or,

[0019] The pressing assembly includes a plurality of drive rods, which are spaced apart along the second direction.

[0020] The advantages of this utility model compared to the prior art are:

[0021] The electrical connection auxiliary device for the display panel of this utility model includes two first limiting plates that are spaced apart and parallel to each other along a second direction. When using the electrical connection auxiliary device, the base can limit the first circuit board between the two first limiting plates and restrict the relative position of the pressing plate and the first electrical connection part along the second direction. The pressing assembly includes a second limiting plate, which can abut against the side of the connecting cover along the third direction, thereby restricting the relative position of the connecting cover and the pressing assembly along the third direction. This can improve the relative positional accuracy between the pressing plate, the connecting cover, and the first electrical connection part before pressing and assembling the connecting cover.

[0022] Furthermore, since the accommodating space is not obstructed by the structure of the seat on both sides along the third direction, it is convenient for the operator to confirm the relative positional relationship between the second limiting plate and the connecting cover from both sides along the third direction, so as to confirm that the limiting effect of the second limiting plate on the connecting cover is effective.

[0023] Furthermore, by pressing the second end to press the pressing plate against the connecting cover, the effective contact area between the pressing plate and the connecting cover is larger during the pressing process, so that the pressing force on the connecting cover is more uniform, thereby reducing the possibility that the second electrical connection part and the first electrical connection part will be greatly offset due to uneven force on the connecting cover during the pressing process.

[0024] Furthermore, by providing an ink layer on the side of the second limiting plate away from the transmission rod, during the process of the operator pressing the pressing plate against the connecting cover by pressing the second end, the side of the second limiting plate away from the transmission rod is pressed against the surface of the second circuit board, thereby causing some ink on the ink layer to be printed onto the surface of the second circuit board. Since the second limiting plate can restrict the posture of the connecting cover along the third-direction upward edge, the ink mark formed on the surface of the second circuit board is an ink line parallel to the third-direction upward edge of the connecting cover. Therefore, without power, the offset between the second electrical connection and the connecting cover can be observed and detected by comparing the positional relationship between the ink line and the edge of the second circuit board or other structures. Since the relative positional accuracy between the connecting cover and the first electrical connection is high after the connecting cover is engaged with the slot on the first circuit board, the offset between the first electrical connection and the second electrical connection can be obtained by observing the offset between the second electrical connection and the connecting cover. Attached Figure Description

[0025] Figure 1 An exploded view of the structure of the first circuit board, the second circuit board, and the connecting cover provided in the prior art.

[0026] Figure 2 This is a schematic diagram of the structure of the first circuit board, the second circuit board, the connecting cover, and the electrical connection auxiliary device according to an embodiment of the present utility model.

[0027] Figure 3 for Figure 2 A schematic diagram of the cross-sectional structure along the AA direction (excluding the elastic reset component).

[0028] Figure 4 for Figure 3 The diagram shows a cross-sectional view (dimensions only).

[0029] Figure 5 This is a schematic diagram of the mounting plate, the second limiting plate, and the ink layer in an embodiment of the present invention.

[0030] Figure 6 This is a schematic diagram of the structure of the mounting plate, the second limiting plate, the ink layer, and the elastic layer in an embodiment of this utility model.

[0031] Figure 7This is a schematic diagram of the mounting plate and the second limiting plate in an embodiment of the present utility model.

[0032] Figure 1 middle:

[0033] 100', First circuit board; 100a', Card slot; 100b', First electrical connection part

[0034] 200', Second circuit board; 200a', Second electrical connection part;

[0035] 300', connecting cover.

[0036] Figures 2 to 7 middle:

[0037] 100, First circuit board; 100a, Card slot; 100b, First electrical connection part; 200, Second circuit board; 200a, Second electrical connection part; 300, Connecting cover; 400, Electrical connection auxiliary device; 1, Base; 10, Connector; 101, Through hole; 11, First limiting plate; 12, Accommodating space; 2, Pressing assembly; 20, Transmission rod; 201, First end; 202, Second end; 21, Pressing plate; 22, Second limiting plate; 220, Ink layer; 221, Limiting surface; 222, Pressing surface; 223, Clearance surface; 2231, First sub-surface; 2232, Second sub-surface; 224, Notched corner space; 225, Elastic layer; 226, Ink reservoir; 23, Handle; 3, Elastic reset component. Detailed Implementation

[0038] 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.

[0039] The present invention will now be described in detail with reference to the accompanying drawings.

[0040] like Figure 2 and Figure 3As shown, an electrical connection auxiliary device 400 for a display panel is provided, including a base 1 and a pressing assembly 2. The base 1 includes a connector 10 and two first limiting plates 11. The connector 10 has a through hole 101 extending along a first direction S1. The two first limiting plates 11 are respectively connected to two opposite sides of the connector 10 along a second direction S2. The two first limiting plates 11 are spaced apart and parallel to each other, and a receiving space 12 is formed between the connector 10 and the two first limiting plates 11. The pressing assembly 2 includes a transmission rod 20, a pressing plate 21, and a second limiting plate 22. The transmission rod 20 has a first end 201 and a second limiting plate 22. End 202, transmission rod 20 is slidably inserted through through hole 101 along first direction S1, first end 201 is located inside receiving space 12, second end 202 is located outside receiving space 12, pressing plate 21 is connected to first end 201, pressing plate 21 is connected to a second limiting plate 22 on one side along third direction S3, the second limiting plate 22 is perpendicular to pressing plate 21, and the second limiting plate 22 is at least partially located on the side of pressing plate 21 away from transmission rod 20, the surface of the side of the second limiting plate 22 away from transmission rod 20 is provided with ink layer 220, wherein the first direction S1, the second direction S2 and the third direction S3 are perpendicular to each other.

[0041] The electrical connection auxiliary device 400 for the display panel of this utility model, by having the base 1 include two first limiting plates 11 that are spaced apart and parallel to each other along the second direction S2, can limit the first circuit board 100 between the two first limiting plates 11 when using the electrical connection auxiliary device 400, and limit the relative position of the pressing plate 21 and the first electrical connection part 100b along the second direction S2. The pressing assembly 2 includes a second limiting plate 22, which can abut against one side of the connecting cover 300 along the third direction S3, thereby limiting the relative position of the connecting cover 300 and the pressing assembly 2 along the third direction S3. This can improve the relative positional accuracy between the pressing plate 21, the connecting cover 300 and the first electrical connection part 100b before pressing and assembling the connecting cover 300.

[0042] Furthermore, since the two sides of the accommodating space 12 along the third direction S3 are not obstructed by the structure of the seat 1, it is convenient for the operator to confirm the relative positional relationship between the second limiting plate 22 and the connecting cover 300 from both sides along the third direction S3, so as to confirm that the limiting effect of the second limiting plate 22 on the connecting cover 300 is effective.

[0043] Furthermore, by pressing the second end 202 to press the pressing plate 21 against the connecting cover 300, the effective contact area between the pressing plate 21 and the connecting cover 300 can be larger during the pressing process, so that the pressing force on the connecting cover 300 is more uniform, thereby reducing the possibility that the second electrical connection part 200a and the first electrical connection part 100b will be greatly offset due to uneven force on the connecting cover 300 during the pressing process.

[0044] Furthermore, by providing an ink layer 220 on the surface of the second limiting plate 22 away from the transmission rod 20, during the process of the operator pressing the second end 202 to press the pressing plate 21 against the connecting cover 300, the surface of the second limiting plate 22 away from the transmission rod 20 is pressed against the surface of the second circuit board 200, thereby causing some ink on the ink layer 220 to be printed onto the surface of the second circuit board 200. Since the second limiting plate 22 can restrict the posture of the edge of the connecting cover 300 along the third direction S3, the ink print formed on the surface of the second circuit board 200 by the ink layer 220 is parallel to the connecting cover. The ink line 300 runs along the edge of the third direction S3, so that the offset between the second electrical connection part 200a and the connecting cover 300 can be observed and detected by comparing the positional relationship between the ink line and the edge or other structures of the second circuit board 200 without power. Since the connecting cover 300 is snapped into the slot 100a on the first circuit board 100, the relative positional accuracy between the connecting cover 300 and the first electrical connection part 100b is high. Therefore, the offset between the first electrical connection part 100b and the second electrical connection part 200a can be obtained by the offset between the second electrical connection part 200a and the connecting cover 300.

[0045] Optionally, the second limiting plate 22 and the pressing plate 21 can be an integral structure. In other words, the second limiting plate 22 and the pressing plate 21 can be integrally formed by processes including but not limited to injection molding and casting. Alternatively, the second limiting plate 22 and the pressing plate 21 can be two separate plates that are connected to each other by means including but not limited to welding, gluing, and threaded connection of threaded parts to become an integral structure.

[0046] Please combine Figure 4As shown, along the first direction S1, the protrusion height of the second limiting plate 22 relative to the side of the pressing plate 21 away from the transmission rod 20 is d1. The connecting cover 300 has a dimension d2, the second electrical connection part 200a has a dimension d3, and the first electrical connection part 100b has a dimension d4. In order to ensure that the side of the second limiting plate 22 away from the transmission rod 20 can press against the surface of the second circuit board 200 during the pressing process of the pressing plate 21 pressing the connecting cover 300, so that some ink on the ink layer 220 can be printed onto the surface of the second circuit board 200, the height d1 needs to be greater than the dimension d2. Optionally, d2 < d1 ≤ d2 + d3 + d4. For ease of observation... Figure 4 The text shows the relationship with... Figure 3 The first circuit board 100, the first electrical connection part 100b, the second circuit board 200, the connecting cover 300, and the electrical connection auxiliary device 400 have the same structure, but... Figure 4 Only the height d1, dimension d2, dimension d3, and dimension d4 are labeled.

[0047] Furthermore, the connecting cover 300 is flush with or protrudes from the first circuit board 100 along the third direction S3, so that when the second limiting plate 22 presses on the surface of the second circuit board 200, the second circuit board 200 can bend to a certain extent, and the second circuit board 200 will not obstruct the pressing process of the second limiting plate 22, thereby not obstructing the pressing process of the pressing plate 21 on the connecting cover 300, so that the second limiting plate 22 can press on the surface of the second circuit board 200 and form ink on the surface of the second circuit board 200, while the pressing plate 21 can fully press on the connecting cover 300.

[0048] In the prior art, the dimension d2 of the connecting cover 300 is usually less than or equal to 0.8 mm, while the sum of the dimension d2 of the connecting cover 300, the dimension d3 of the second electrical connection part 200a, and the dimension d4 of the first electrical connection part 100b is usually approximately 1.5 mm. Based on this, the protrusion height d1 can optionally satisfy: 0.8 mm ≤ d1 ≤ 1.5 mm. For example, the protrusion height d1 can be 0.8 mm, 0.9 mm, 1 mm, 1.1 mm, 1.2 mm, 1.3 mm, 1.4 mm, or 1.5 mm, etc.

[0049] Please combine Figure 5As shown, optionally, the surface of the second limiting plate 22 away from the transmission rod 20 is the pressing surface 222, and the surface of the second limiting plate 22 near the pressing plate 21 along the third direction S3 is the limiting surface 221. At least the pressing surface 222 is provided with an ink layer 220. The pressing surface 222 and the limiting surface 221 are connected by a clearance surface 223, so that a notched space 224 is formed at the clearance surface 223. Thus, when the second limiting plate 22 presses on the surface of the second circuit board 200, and the second circuit board 200 bends to a certain extent, the notched space 224 can avoid the bend of the second circuit board 200, so as to avoid the second limiting plate 22 applying excessive pressing force to the bend of the second circuit board 200, and thus avoid damage to the bend of the second circuit board 200.

[0050] Optionally, the clearance surface 223 may be a slope to make the shape of the clearance surface 223 simple and easy to manufacture.

[0051] Please combine Figure 6 As shown, optionally, the avoidance surface 223 can be a curved surface that is recessed towards the inside of the second limiting plate 22, so that the corner space 224 is larger and the avoidance effect at the bend of the second circuit board 200 is better.

[0052] Please combine Figure 7 As shown, optionally, the avoidance surface 223 includes a first sub-surface 2231 and a second sub-surface 2232 connected to each other. The pressing surface 222, the first sub-surface 2231, the second sub-surface 2232 and the limiting surface 221 are connected in sequence. The first sub-surface 2231 and the second sub-surface 2232 form an angle θ, which satisfies the following condition: 90°≤θ≤120°. For example, the angle θ can be 90°, 95°, 100°, 105°, 110°, 115° or 120°, etc. Therefore, the shape of the avoidance surface 223 is simpler and easier to manufacture, and the missing corner space 224 can be larger, which improves the avoidance effect at the bend of the second circuit board 200.

[0053] Please combine again Figure 6 and Figure 7 As shown, optionally, the surface of the second limiting plate 22 away from the transmission rod 20 is covered with an elastic layer 225, and an ink layer 220 is disposed on the surface of the elastic layer 225. Thus, when the second limiting plate 22 is pressed against the surface of the second circuit board 200, on the one hand, the elastic layer 225 can absorb a certain amount of pressing force to further prevent the second limiting plate 22 from pressing the second circuit board 200 excessively. On the other hand, since only one layer of elastic layer 225 is provided, the deformation range of the elastic layer 225 when squeezed is relatively limited. Thus, the ink line formed by the ink layer 220 on the surface of the elastic layer 225 and the edge of the connecting cover 300 along the third direction S3 can still be roughly parallel to each other.

[0054] Optionally, the second limiting plate 22 is provided with an ink storage groove 226 extending along the second direction S2 on the side away from the transmission rod 20. The ink layer 220 is partially filled in the ink storage groove 226, so that more ink can be contained through the ink storage groove 226, thereby effectively reducing the number of times the operator needs to add ink to the side of the second limiting plate 22 away from the transmission rod 20.

[0055] like Figure 2 As shown, optionally, the electrical connection auxiliary device 400 further includes an elastic reset member 3. The elastic reset member 3 may include, but is not limited to, a spring or a spring sheet. The elastic reset member 3 is connected between the connector 10 and the pressing assembly 2. The elastic reset member 3 can apply an elastic force along the first direction S1 to the pressing assembly 2, so that the pressing plate 21 has a tendency to move toward the connector 10, so that when the operator does not press the second end 202, the pressing plate 21 can be under the action of the elastic reset member 3.

[0056] For example, the elastic reset member 3 may be connected between the connector 10 and the pressing plate 21, or the pressing assembly 2 may also include a handle 23 connected to the second end 202, and the elastic reset member 3 may be connected between the handle 23 and the pressing plate 21.

[0057] Optionally, along the third direction S3, the first end 201 is eccentrically connected to the pressing plate 21, and the first end 201 is biased toward the side where the second limiting plate 22 is located. This allows the eccentric pressing force applied by the first end 201 to the pressing plate 21 to counteract the reaction force of the second limiting plate 22 pressing the second circuit board 200, thereby enabling the pressing plate 21 to apply a more balanced pressing force to the connecting cover 300.

[0058] Optionally, the pressing assembly 2 includes a plurality of transmission rods 20, which are spaced apart along the second direction S2. By increasing the number of transmission rods 20, the force balance at various positions of the connecting cover 300 is further improved, thereby further improving the balance of the pressing force applied by the pressing plate 21 to the connecting cover 300.

[0059] Preferably, the first end 201 can be connected to the position of the pressing plate 21 biased towards the second limiting plate 22 along the third direction S3, while the pressing assembly 2 includes multiple transmission rods 20, so that the pressing force applied by the pressing plate 21 to the connecting cover 300 is more balanced.

[0060] 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. An electrical connection auxiliary device for a display panel, characterized in that, include: The base includes a connector and two first limiting plates. The connector has a through hole extending in a first direction. The two first limiting plates are respectively connected to two opposite sides of the connector in a second direction. The two first limiting plates are spaced apart and parallel to each other. An accommodating space is formed between the connector and the two first limiting plates. as well as, The pressing assembly includes a transmission rod, a pressing plate, and a second limiting plate. The transmission rod has a first end and a second end opposite to each other. The transmission rod is slidably inserted through the through hole along the first direction. The first end is located within the receiving space, and the second end is located outside the receiving space. The pressing plate is connected to the first end. The second limiting plate is connected to the pressing plate on one side along the third direction. The second limiting plate is perpendicular to the pressing plate, and at least part of the second limiting plate is located on the side of the pressing plate away from the transmission rod. The surface of the second limiting plate away from the transmission rod is provided with an ink layer. Wherein, the first direction, the second direction, and the third direction are all perpendicular to each other.

2. The electrical connection auxiliary device for the display panel according to claim 1, characterized in that, Along the first direction, the protrusion height of the second limiting plate relative to the side surface of the pressing plate opposite to the transmission rod is d1, 0.8mm≤d1≤1.5mm.

3. The electrical connection auxiliary device for the display panel according to claim 1, characterized in that, The pressing plate is used to press the first electrical connection part of the first circuit board, the second electrical connection part of the second circuit board, and the connecting cover, which are stacked sequentially, together from the side of the connecting cover away from the first circuit board. Along the first direction, the protrusion height of the second limiting plate relative to the side of the pressing plate away from the transmission rod is d1. The connecting cover has a size d2, the second electrical connection part has a size d3, and the first electrical connection part has a size d4, where d2 < d1 ≤ d2 + d3 + d4.

4. The electrical connection auxiliary device for the display panel according to claim 1, characterized in that, The surface of the second limiting plate away from the transmission rod is a pressing surface, and at least the pressing surface is provided with the ink layer. The surface of the second limiting plate close to the pressing plate along the third direction is a limiting surface. The pressing surface and the limiting surface are connected by a clearance surface, so that a missing corner space is formed at the clearance surface.

5. The electrical connection auxiliary device for the display panel according to claim 4, characterized in that, The clearance surface is either a sloped surface or a curved surface that is recessed towards the inside of the second limiting plate.

6. The electrical connection auxiliary device for the display panel according to claim 4, characterized in that, The avoidance surface includes a first sub-surface and a second sub-surface connected to each other. The pressing surface, the first sub-surface, the second sub-surface and the limiting surface are connected in sequence. The first sub-surface and the second sub-surface form an angle θ, where 90°≤θ≤120°.

7. The electrical connection auxiliary device for a display panel according to any one of claims 1-6, characterized in that, The electrical connection auxiliary device further includes an elastic reset member connected between the connector and the pressing assembly. The elastic reset member is capable of applying an elastic force along the first direction to the pressing assembly, causing the pressing plate to tend to move toward the connector.

8. The electrical connection auxiliary device for a display panel according to any one of claims 1-6, characterized in that, The second limiting plate has an elastic layer covering the side of its surface away from the transmission rod, and the ink layer is disposed on the surface of the elastic layer.

9. The electrical connection auxiliary device for a display panel according to any one of claims 1-6, characterized in that, The second limiting plate has an ink storage groove extending in the second direction on the side away from the transmission rod, and the ink layer is partially filled in the ink storage groove.

10. The electrical connection auxiliary device for a display panel according to any one of claims 1-6, characterized in that, Along the third direction, the first end is eccentrically connected to the pressing plate, and the first end is biased towards the side where the second limiting plate is located; and / or, The pressing assembly includes a plurality of drive rods, which are spaced apart along the second direction.

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