Printed circuit board, control device and display device

Description

Technical Field

[0001] The present disclosure relates to the field of display technologies, and especially to a circuit board, a driving device and a display device.Background

[0002] A display device typically comprises a display panel and a driving device for driving the display panel to display images. The main component of the driving device comprises a circuit board, which comprises a plurality of sub-circuit boards. In order to achieve signal transmission between the sub-circuit boards, a circuit connection structure is usually provided between the sub-circuit boards.

[0003] D1 (US2008 / 084520A1) discloses a backlight assembly including a light emitting diode assembly including a plurality of LED devices, a mold frame receiving a light guiding plate and including a coupling portion disposed at a side of a rear surface of the mold frame, and a sensor combined with the coupling portion and sensing an amount of light emitted from the plurality of LED devices.

[0004] D2(US2012 / 002376A1) discloses a flexible printed wiring board, which includes a base, a corrugated portion, and a block. The base includes a conductor that electrically connects a first end and a second end. The corrugated portion is formed in a middle part of the base and has a ridge and legs. The ridge is roundly bent. The legs continuously hang from opposite sides of the ridge. The block is located off the ridge within a gap where the legs face each other and is mounted on one of the legs.Summary

[0005] A circuit board provided by an embodiment of the disclosure comprises a first sub-circuit board, a second sub-circuit board and a circuit connection structure, the first sub-circuit board being electrically connected to the second sub-circuit board through the circuit connection structure. The first sub-circuit board comprises a first connection terminal, the second sub-circuit board comprises a second connection terminal, the circuit connection structure comprises a first port configured to match with the first connection terminal and a second port configured to match with the second connection terminal. The first connection terminal, the second connection terminal, the first port, and the second port are configured such that when the first sub-circuit board is electrically connected to the second sub-circuit board through the circuit connection structure, a first connection terminal end face faces the first port in a first direction, and a second connection terminal end face faces the second port in a second direction. The first direction is perpendicular to a plane of the first connection terminal end face and points to the first port, the second direction is perpendicular to a plane of the second connection terminal end face and points to the second port, and an angle between the first direction and the second direction is greater than 90° and less than or equal to 180°. The circuit connection structure comprises at least two circuit wirings in parallel with each other, each of the first connection terminal and the second connection terminal comprises at least two sub-terminals, each of the circuit wirings is connected to at least one sub-terminal of the first connection terminal and at least one sub-terminal of the second connection terminal, respectively. An angle between the plane of the board surface of the first sub-circuit board and the first direction is greater than 0° and less than or equal to 90°, and an angle between the plane of the board surface of the second sub-circuit board and the second direction is greater than 0° and less than or equal to 90°, wherein a spacing between two adjacent circuit wirings is greater than a width of a wider circuit wiring among the two adjacent circuit wirings and less than twice the width of the wider circuit wiring, a width direction of the circuit wirings is perpendicular to an extension direction of the circuit wirings.

[0006] In some embodiments, the plane of the first connection terminal end face is parallel to the plane of the second connection terminal end face in response to the first connection terminal being connected to the first port and the second connection terminal being connected to the second port.

[0007] In some embodiments, the angle between the first direction and the second direction is equal to 180°.

[0008] In some embodiments, the angle between the first direction and the second direction is greater than 135° and less than 180°.

[0009] In some embodiments, spacings between adjacent circuit wirings are identical.

[0010] In some embodiments, the circuit connection structure further comprises a flexible package layer for packaging the circuit wirings.

[0011] In some embodiments, the circuit board comprises a first connection buckle between the first port of the circuit connection structure and the first connection terminal of the first sub-circuit board, and a second connection buckle between the second port of the circuit connection structure and the second connection terminal, the first connection buckle is configured to fix the first port and the first connection terminal together, the second connection buckle is configured to fix the second port and the second connection terminal together.

[0012] In some embodiments, the first sub-circuit board and the second sub-circuit board are fixed to a mounting plate, the first connection terminal is electrically connected to a surface of the first sub-circuit board, the second connection terminal is electrically connected to a surface of the second sub-circuit board.

[0013] In some embodiments, the first connection terminal is provided with a first elastic piece for limiting the first port of the circuit connection structure, and the second connection terminal is provided with a second elastic piece for limiting the second port of the circuit connection structure, the first port of the circuit connection structure extends into the first connection terminal via the first elastic piece, the second port of the circuit connection structure extends into the second connection terminal via the second elastic piece.

[0014] In some embodiments, the first direction is parallel to an extending direction of circuit wirings in the first port of the circuit connection structure, and the second direction is parallel to an extending direction of circuit wirings in the second port of the circuit connection structure.

[0015] Another embodiment of the disclosure provides a driving device comprising the circuit board according to any one of foregoing embodiments.

[0016] Yet another embodiment of the disclosure provides a display device comprising the driving device according to the above embodiment.Brief Description of Drawings

[0017] The drawings described herein are intended to provide a further understanding of the present disclosure, and constitute a part of the present disclosure. The schematic drawings of the present disclosure and description thereof are intended to illustrate embodiments of the present disclosure and do not inappropriately limit the present disclosure. In the drawings: FIG. 1 is a structural view of a circuit board provided by an embodiment of the present disclosure; FIG. 2 is a force analysis diagram for the first port of the circuit connection structure in FIG. 1; FIG. 3 is a structural view of a circuit board provided by another embodiment of the present disclosure; FIG. 4 is a force analysis diagram for the first port of the circuit connection structure in FIG. 3; FIG. 5 is a structural view of a circuit connection structure according to an embodiment of the present disclosure; FIG. 6 is a schematic view showing connection between the first port of the circuit connection structure and the first connection terminal of the first sub-circuit board in another embodiment of the present disclosure; FIG. 7 is a sectional view showing connection between the first port of the circuit connection structure and the first connection terminal of the first sub-circuit board in a further embodiment of the present disclosure. Detailed Description of Embodiments

[0018] The technical solutions in embodiments of the disclosure will be clearly and completely described below in conjunction with the accompanying drawings.

[0019] In practice, for a finished display device, even after passing a preliminary quality test, a malfunction phenomenon such as failure to display normally will still occur in subsequent steps or during user's usage. The inventors of the application have found that a connection failure between sub-circuit boards of the circuit board of the driving device for the display device is one cause of the above-described malfunction phenomenon. Specifically, the display device often experiences vibration or shaking during transportation or user's use, the vibration or shaking would cause an impact on connections between the sub-circuit boards, which damages or destroys connections between the sub-circuit boards, such that signals cannot be transmitted smoothly or even are interrupted between the sub-circuit boards, causing the failure of normal display to the display device.

[0020] In the description below, at least the following reference numerals are mentioned: 1 - first sub-circuit board, 10 - first connection terminal; 101 - first connection buckle, 102 - first elastic piece; 2 - second sub-circuit board, 20 - second connection terminal; 3 - circuit connection structure, 301 - first port of the circuit connection structure; 31 - flexible package layer, 32 - circuit wiring; 4 - mounting plate.

[0021] As shown in FIG. 1, FIG. 3, FIG. 6 and FIG. 7, embodiments of the disclosure provide a circuit board comprising at least two sub-circuit boards electrically connected through a circuit connection structure 3, a first sub-circuit board 1 and a second sub-circuit board 2 are shown in these figures. The first sub-circuit board 1 has a first connection terminal 10, and the second sub-circuit board 2 has a second connection terminal 20. The first connection terminal 10 is configured to match with a first port 301 of the circuit connection structure, and the second connection terminal 20 of the second sub-circuit board 2 is configured to match with a second port 302 of the circuit connection structure 3.

[0022] To facilitate the description below, when the first sub-circuit board is connected with the circuit connection structure, an end face of the first connection terminal 10 opposite to the first port 301 of the circuit connection structure is referred to as a first connection terminal end face, and an end face of the first port 301 of the circuit connection structure opposite to the first connection terminal end face is referred to as a first port end face. When the second sub-circuit board is connected with the circuit connection structure, an end face of the second connection terminal 20 opposite to the second port 302 of the circuit connection structure is defined as a second connection terminal end face, and an end face of the second port 302 of the circuit connection structure 3 opposite to the second connection terminal end face is defined as a second port end face. FIG. 6 schematically shows a first connection terminal end face 10a and a first port end face 301a.

[0023] In some embodiments, when the first connection terminal 10 mates with the first port 301 of the circuit connection structure, the first connection terminal end face 10a is in contact with the first port end face 301a, hence, in this case, the first connection terminal end face is parallel to the first port end face. Similarly, the second connection terminal end face is parallel to the second port end face.

[0024] According to an embodiment of the disclosure, the first connection terminal 10 of the first sub-circuit board 1, the second connection terminal 20 of the second sub-circuit board 2, and the first port 301 and the second port 302 of the circuit connection structure 3 are configured such that when the first sub-circuit board 1 is electrically connected to the second sub-circuit board 2 via the circuit connection structure 3, the first connection terminal end face 10a faces the first port 301 in a first direction, and the second connection terminal end face 20a faces the second port 302 in a second direction. The first direction is perpendicular to the plane of the first connection terminal end face 10a and points to the first port 301, and the second direction is perpendicular to the plane of the second connection terminal end face 20a and points to the second port 302. The angle between the first direction and the second direction is greater than 90° and less than or equal to 180°. In FIG. 1 and FIG. 3, the first direction D1 and the second direction D2 are schematically shown by dashed lines with arrows.

[0025] Connections between the sub-circuit boards when the circuit board proposed by the embodiment of the present disclosure is experiencing vibration or shaking under the effect of external factors will be discussed below by way of example.

[0026] In an example, as shown in FIG. 1 and FIG. 3, assuming that the vibration of the circuit board ends with a movement along the second direction, at this time, the first connection terminal end face applies a first thrust F1 to the first port 301 of the circuit connection structure along a direction perpendicular to the first port end face of the circuit connection structure. Since the first connection terminal end face is parallel to the first port end face, the direction of the first thrust F1 is the same as the first direction. At the same time, the second connection terminal end face, due its own inertia, applies an inertial force to the second port end face of the circuit connection structure 3 in a direction perpendicular to the second port end face of the circuit connection structure 3, and the inertial force herein is referred to as a second thrust F2. Since the second connection terminal end face is parallel to the second port end face, the direction of the second thrust F2 is the same as the second direction.

[0027] In this way, for the example of the circuit board as shown in FIG. 1 or FIG. 3, when the vibration of the circuit board ends with movement along the second direction, the second port 302 of the circuit connection structure 3 tends to detach from the second connection terminal 20, and the first port 301 of the circuit connection structure tends to be more tightly connected to the first connection terminal 10. As described above, the angle between the first direction and the second direction is greater than 90° and less than or equal to 180°, so the angle between the first thrust F1 and the second thrust F2 is also greater than 90° and less than or equal to 180°. At this time, if the second port end face is taken as the horizontal plane and the direction perpendicular to the second port end face is taken as the vertical direction, it is found by performing force analysis for the second port of the circuit connection structure 3 that the direction of a component force of the first thrust F1 in the vertical direction is opposite to the direction of the second thrust F2, that is, the component force of the first thrust F1 in the vertical direction offsets or weakens the second thrust F2 to some extent, thereby decreasing the tendency of the second port 302 of the circuit connection structure 3 to detach from the second connection terminal 20.

[0028] Similarly, for the example shown in FIG. 1 or FIG. 3, when the vibration of the circuit board provided by embodiments of the present disclosure ends with movement along the first direction, the second connection terminal end face applies a second thrust F2 to the second port 302 of the circuit connection structure along a direction perpendicular to the second port end face of the circuit connection structure, and the direction of the second thrust F2 is the same as the second direction. At the same time, the first connection terminal end face applies the first thrust F1 to the first port end face of the circuit connection structure 3 along a direction perpendicular to the first port end face of the circuit connection structure 3, and the direction of the first thrust F1 is the same as the first direction. At this time, the angle between the first thrust F1 and the second thrust F2 is still greater than 90° and less than or equal to 180°, but the first port 301 of the circuit connection structure tends to detach from the first connection terminal 10, and the second port of the circuit connection structure tends to be more tightly connected to the second connection terminal 20. At this time, if the first port end face is taken as the horizontal plane and the direction perpendicular to the first port end face is taken as the vertical direction, it is found by performing force analysis for the first port 301 of the circuit connection structure that the direction of a component force of the second thrust F2 in the vertical direction is opposite to the direction of the first thrust F1, that is, the component force of the second thrust in the vertical direction offsets or weakens the first thrust to some extent, thereby decreasing the tendency of the first port 301 of the circuit connection structure to detach from the first connection terminal 10.

[0029] Through the above analysis, it is understood that, in case the circuit board provided by the embodiment of the disclosure is applied to a display device, when the display device is experiencing vibration, the probability of a connection line in the circuit connection structure in the circuit board detaching from a connection terminal of a sub-circuit board is decreased, so that the probability of failure of the display device is decreased.

[0030] In some embodiments, as shown in FIG. 1 and FIG. 3, the first connection terminal 10 is electrically connected to a surface of the first sub-circuit board, and the second connection terminal 20 is electrically connected to a surface of the second sub-circuit board 2. The first connection terminal 10 is soldered to the board surface of the first sub-circuit board 1, and the second connection terminal 20 is soldered to the board surface of the second sub-circuit board 2. The angle between the plane of the first connection terminal end face and the plane of the board surface of the first sub-circuit board 1, and the angle between the plane of the second connection terminal end face and the plane of the board surface of the second sub-circuit board 2 is set as needed. In some embodiments, in order to enable the first connection terminal 10 to mate with the first port 301 of the circuit connection structure easily, the angle between the plane of the board surface of the first sub-circuit board 1 and the plane of the first connection terminal end face is equal to 0°, and the angle between the plane of the board surface of the second sub-circuit board 2 and the plane of the second connection terminal end face is equal to 0°.

[0031] FIG. 1 illustrates a circuit board according to an embodiment of the disclosure, in which the plane of the first connection terminal end face is parallel to the plane of the second connection terminal end face, and the first direction is opposite to the second direction. At this time, the angle formed between the first direction and the second direction is equal to 180°.

[0032] Generally, the display device is typically placed vertically on a placement surface, that is, the plane of the display surface of the display device is perpendicular to the placement surface for the display device. In this case, the board surface of each sub-circuit board in the circuit board of the display device is also perpendicular to the placement surface for the display device. When the circuit board provided by the embodiment shown in FIG. 1 is applied to a display device, at the moment when the vibration of the display device ends, the circuit connection structure 3 still tends to move towards the first direction D1 or the second direction D2 shown in FIG. 1 due to its inertia, although the first sub-circuit board 1 and the second sub-circuit board 1 stop movement.

[0033] At the moment when the vibration of the circuit board shown in FIG. 1 ends with movement along the first direction, the first sub-circuit board 1 is no longer moving, but the first port 301 of the circuit connection structure still has inertia of moving downwards (towards the first direction). The inertia is regarded as the first thrust F1 applied by the first connection terminal end face of the first sub-circuit board 1 to the first port 301 of the circuit connection structure during the downward movement (the first direction), so that the first port 301 of the circuit connection structure tends to detach from the first connection terminal 10. At that time, the second sub-circuit board 2 is also no longer moving, but the second port of the circuit connection structure 3 still has inertia of moving along the first direction, so that the second port of the circuit connection structure 3 tends to be more tightly connected to the second connection terminal 20. However, since the end face of the second connection terminal 20 of the second sub-circuit board 2 faces the second port of the circuit connection structure 3, the second connection terminal end face of the second sub-circuit board 2 has a reaction force on the second port of the circuit connection structure 3, which is the second thrust F2 mentioned above.

[0034] FIG. 2 is a schematic view illustrating force analysis of the first port 301 of the circuit connection structure under the above circumstances. Taking the first port end face as the horizontal plane and the direction perpendicular to the first port end face as the vertical direction, force analysis is performed for the first port 301 of the circuit connection structure. Since the angle between the first direction and the second direction is 180°, the second thrust F2 has no component force in the horizontal plane where the first port end face is situated, that is, the second thrust F2 all acts on the vertical direction perpendicular to the first port end face, so that the acting effect of the first thrust F1 is minimized, decreasing the tendency of the first port of the circuit connection structure to detach from the first connection terminal. Moreover, the second thrust F2 has no component force in the horizontal direction of the first port end face, so that the first port end face will not move relative to the first connection terminal end face, which prevents the connection between the first connection terminal 10 and the first port 301 from being damaged or interrupted by the relative movement between the first port end face and the first connection terminal end face.

[0035] FIG. 3 illustrates a circuit board according to another embodiment of the present disclosure, in which the angle between the first direction and the second direction is greater than 90° and less than 180°.

[0036] If the circuit board shown in this embodiment is applied to a display device, the display device is placed vertically on a placement surface. In this case, at the moment when the vibration of the display device ends, though the first sub-circuit board 1 and the second sub-circuit board 2 have stopped moving, the circuit connection structure 3 still tends to move upwards (towards the second direction D2) or move downwards (towards the direction opposite to the second direction D2) due to its inertia.

[0037] As shown in FIG. 3 and FIG. 4, after the vibration of the display device has ended, the circuit connection structure 3 still tends to move downwards (towards the direction opposite to the second direction D2). For the first port 301 of the circuit connection structure, the first port 301 of the circuit connection structure still tends to move towards the first direction due to its inertia, which is regarded as the first connection terminal end face of the first sub-circuit board 1 applying the first thrust F1 to the first port 301 of the circuit connection structure during the downward movement, so that the first port 301 of the circuit connection structure has a tendency to detach from the first connection terminal 10.

[0038] For the second port of the circuit connection structure 3, the second port of the circuit connection structure 3 still tends to move downwards (towards the direction opposite to the second direction) due to its inertia, so that the second port of the circuit connection structure 3 has a tendency to be more tightly connected to the second connection terminal 20. However, since the end face of the second connection terminal 20 faces the second port of the circuit connection structure 3, the second connection terminal end face has a reaction force on the second port of the circuit connection structure 3. The reaction force is referred to as a second thrust F2 and the direction of the second thrust F2 is consistent with the second direction.

[0039] As shown in FIG. 4, taking the first port end face as the horizontal plane and the direction perpendicular to the first port end face as the vertical direction, force analysis is performed for the first port 301 of the circuit connection structure. The direction of the first thrust F1 received by the first port is the same as the first direction, and the direction of the second thrust F2 is the same as the second direction. As described above, in the embodiment of FIG. 3, the angle between the first direction and the second direction is greater than 90° and less than 180°, so the angle between the second thrust F2 and the first thrust F1 is greater than 90° and less than 180°, which is represented by α2. At this time, the component force F21 of the second thrust F2 in the vertical direction is F21=F2cos (180°-α2), so that the first thrust force F1 is reduced, thereby decreasing the tendency of the first port 301 of the circuit connection structure to detach from the first connection terminal 10.

[0040] For the embodiment shown in FIG. 3, the horizontal component force of the second thrust F2 in the case of taking the first port end face as the horizontal plane is: F22=F2sin (180°-α2). In order to reduce the horizontal component force of the second thrust F2 on the first port end face, in an embodiment, α2 is defined to be greater than 135° and less than 180°, and within this angular range, F21>F22. This is able to reduce the horizontal component force F21 of the second thrust F2 to thereby mitigate the unfavorable effect of the horizontal component force F21 on the connection between the first connection terminal 10 and the first port, and increase the component force of the second thrust F2 in the vertical direction to more reduce the first thrust F1.

[0041] Based on the same principle, force analysis for the second port of the circuit connection structure 3 at the moment when the vibration of the circuit board ends is performed based on the embodiments of FIG. 1 and FIG. 3. It is understood that the tendency of the second port of the circuit connection structure 3 to be tightly connected to the second connection terminal 20 is decreased, but in general, the second port of the circuit connection structure 3 still tends to be connected to the second connection terminal 20, in other words, the second port of the circuit connection structure 3 less tends to detach from the second connection terminal 20.

[0042] In some embodiments, when the first port 301 of the circuit connection structure mates with the first connection terminal 10, the extending direction of the circuit wirings in the first port 301 of the circuit connection structure is perpendicular to the plane of the first connection terminal end face, and the first direction is perpendicular to the plane of the first connection terminal end face. Therefore, when the first port 301 of the circuit connection structure mates with the first connection terminal 10, the first direction is parallel to the extending direction of the circuit wirings within the first port 301 of the circuit connection structure. Similarly, when the second port of the circuit connection structure 3 mates with the second connection terminal 20, the second direction is parallel to the extending direction of the circuit wirings within the second port of the circuit connection structure 3.

[0043] In some embodiments, in the case where the angle between the first direction and the second direction is greater than 90° and less than or equal to 180°, the angle between the plane of the board surface of the first sub-circuit board 1 and the first direction is greater than 0° and less than or equal to 90°, and the angle between the plane of the board surface of the second sub-circuit board 2 and the second direction is greater than 0° and less than or equal to 90°.

[0044] In some embodiments, as shown in FIG. 1 and FIG. 2, the sub-circuit boards are fixed to a mounting plate 4 to ensure the stability of the sub-circuit boards. In addition, in a further embodiment, as shown in FIG. 6, a first connection buckle 101 is disposed between the first port 301 of the circuit connection structure and the first connection terminal 10 of the first sub-circuit board, and the first port 301 of the circuit connection structure and the first connection terminal 10 are fixed together by the first connection buckle 101 to improve tightness of the connection between the first port 301 of the circuit connection structure and the first connection terminal 10. Further, in an example of FIG. 7, the first connection terminal 10 is provided with a first elastic piece 102 for limiting the first port 30 of the circuit connection structure, so that the first port 301 of the circuit connection structure extends into the first connection terminal 10 via the first elastic piece 102, thereby preventing looseness or detachment of the first port in the first connection terminal 10.

[0045] Similarly, in some embodiments, a second connection buckle is provided between the second port of the circuit connection structure 3 and the second connection terminal 20, and the second port of the circuit connection structure 3 and the second connection terminal 20 are fixed together by the second connection buckle to improve tightness of the connection between the second port 301 of the circuit connection structure and the second connection terminal 20. The second connection terminal is provided with a second elastic piece for limiting the second port of the circuit connection structure 3, so that the second port of the circuit connection structure extends into the second connection terminal of the second sub-circuit board via the second elastic piece, thereby preventing looseness or detachment of the second port in the second connection terminal.

[0046] In the embodiments of the disclosure, the circuit connection structure 3 is capable of being implemented in various ways. In some embodiments, the circuit connection structure 3 is a flexible circuit board. Of course, other forms of circuit connection structures are also possible, as long as the first sub-circuit board 1 and the second sub-circuit board 2 is able to be electrically connected so that signals are transmitted.

[0047] In some embodiments, as shown in FIG. 5, the circuit connection structure 3 comprises at least two circuit wirings 32 disposed in parallel. Correspondingly, the connection terminal of each sub-circuit board comprises at least two sub-terminals which are in one-to-one correspondence with the circuit wirings 32 to ensure that each of the circuit wirings 32 is connected to a corresponding sub-terminal. In other embodiments, a plurality of sub-terminals of the connection terminal of each sub-circuit board are connected to a circuit wiring, respectively.

[0048] In some embodiments, the spacing between two adjacent circuit wirings 32 is greater than the width of a wider circuit wiring among the two circuit wirings 32, and less than twice the width of the wider circuit wiring 32. The width direction of each circuit wiring 32 is perpendicular to the direction in which the circuit wiring 32 extends. Experimental tests have shown that in this case, it is possible to minimize signal interference between adjacent circuit wirings while ensuring that the number of circuit wirings is maximized.

[0049] In some embodiments, the spacings between two adjacent circuit wirings 32 are the same or similar, so that when the circuit board is experiencing vibration, the circuit connection structure 3 uniformly transmits the force received by itself so as to prevent the port of the circuit connection structure 3 from being damaged by stress due to non-uniform thrust propagation.

[0050] In a further embodiment, as shown in FIG. 5, the circuit connection structure 3 further comprises a flexible package layer 31 for packaging a plurality of circuit wirings 32. The edges of the flexible package layer 31 extend in the same direction as the circuit wirings, which allows the flexible package layer 31 to package the circuit wirings 32 as many as possible.

[0051] In the description of the various embodiments above, specific features, structures, material, or characteristics are capable of being combined in any suitable manner in any one or more embodiments or examples.

Claims

1. A circuit board comprising a first sub-circuit board (1), a second sub-circuit board(2) and a circuit connection structure(3), the first sub-circuit board(1) being electrically connected to the second sub-circuit board(2) through the circuit connection structure(3), wherein the first sub-circuit board(1) comprises a first connection terminal(10), the second sub-circuit board(2) comprises a second connection terminal(20), the circuit connection structure(3) comprises a first port(301) configured to match with the first connection terminal(10) and a second port(302) configured to match with the second connection terminal(20), wherein the first connection terminal(10), the second connection terminal(20), the first port(301), and the second port(302) are configured such that when the first sub-circuit board(1) is electrically connected to the second sub-circuit board(2) through the circuit connection structure(3), a first connection terminal end face(10a) faces the first port(301) in a first direction, and a second connection terminal end face(20a) faces the second port(302) in a second direction, wherein the first direction is perpendicular to a plane of the first connection terminal end face(10a) and points to the first port(301), the second direction is perpendicular to a plane of the second connection terminal end face(20a) and points to the second port(302), wherein an angle between the first direction and the second direction is greater than 90° and less than or equal to 180°, wherein the circuit connection structure (3) comprises at least two circuit wirings(32) in parallel with each other, each of the first connection terminal(10) and the second connection terminal(20) comprises at least two sub-terminals, each of the circuit wirings(32) is connected to at least one sub-terminal of the first connection terminal(10) and at least one sub-terminal of the second connection terminal(20), respectively, characterized in that, an angle between the plane of the board surface of the first sub-circuit board (1) and the first direction is greater than 0° and less than or equal to 90°, and an angle between the plane of the board surface of the second sub-circuit board (2) and the second direction is greater than 0° and less than or equal to 90°, wherein a spacing between two adjacent circuit wirings(32) is greater than a width of a wider circuit wiring among the two adjacent circuit wirings(32) and less than twice the width of the wider circuit wiring, a width direction of the circuit wirings(32) is perpendicular to an extension direction of the circuit wirings(32).

2. The circuit board according to claim 1, wherein the plane of the first connection terminal end face(10a) is parallel to the plane of the second connection terminal end face(20a) in response to the first connection terminal(10) being connected to the first port (301) and the second connection terminal(20) being connected to the second port(302).

3. The circuit board according to claim 2, wherein the angle between the first direction and the second direction is equal to 180°.

4. The circuit board according to claim 1, wherein the angle between the first direction and the second direction is greater than 135° and less than 180°.

5. The circuit board according to claim 1, wherein spacings between adjacent circuit wirings (32) are identical.

6. The circuit board according to claim 1, wherein the circuit connection structure(3) further comprises a flexible package layer(31) for packaging the circuit wirings(32).

7. The circuit board according to any one of claims 1 to 6, wherein the circuit board comprises a first connection buckle(101) between the first port(301) of the circuit connection structure(3) and the first connection terminal(10) of the first sub-circuit board(1), and a second connection buckle between the second port (302) of the circuit connection structure(3) and the second connection terminal(20), the first connection buckle is configured to fix the first port(301) and the first connection terminal(20) together, the second connection buckle is configured to fix the second port(302) and the second connection terminal(20) together.

8. The circuit board according to any one of claims 1 to 6, wherein the first sub-circuit board (1) and the second sub-circuit board(2) are fixed to a mounting plate (4) , the first connection terminal(10) is electrically connected to a surface of the first sub-circuit board(1), the second connection terminal(20) is electrically connected to a surface of the second sub-circuit board(2).

9. The circuit board according to any one of claims 1 to 6, wherein the first connection terminal(10) is provided with a first elastic piece(102) for limiting the first port(301) of the circuit connection structure(3), and the second connection terminal(20) is provided with a second elastic piece for limiting the second port(302) of the circuit connection structure(3), the first port(301) of the circuit connection structure(3) extends into the first connection terminal(10) via the first elastic piece(102), the second port(302) of the circuit connection structure(3) extends into the second connection terminal(20) via the second elastic piece.

10. The circuit board according to any one of claims 1 to 6, wherein the first direction is parallel to an extending direction of circuit wirings (32) in the first port(301) of the circuit connection structure(3), and the second direction is parallel to an extending direction of circuit wirings(32) in the second port(302) of the circuit connection structure(3).

11. A driving device comprising the circuit board according to any one of claims 1 to 10.

12. A display device comprising the driving device according to claim 11.