FPC positioning mechanism and device, display panel conduction device and fixture

Abstract

The present invention discloses an FPC positioning mechanism, an FPC positioning device, a display panel conduction device and a lighting test fixture, which include a substrate for carrying an FPC, a lateral positioning structure for correcting the FPC along the width direction of the FPC and a longitudinal positioning structure for correcting the FPC along the length direction of the FPC are provided on the substrate in a sliding manner, the lateral positioning structure includes at least a pair of lateral positioning blocks that can move along the width direction of the FPC, and the longitudinal positioning structure includes at least one longitudinal positioning block that can move along the length direction of the FPC. The present invention is not only simple in structure, but also can conveniently and quickly realize the correction of the position of the FPC based on the position of the conduction device crimping head, thereby ensuring the alignment crimping accuracy of the FPC and the conduction device.

Description

Technical Field

[0001] The present invention relates to an FPC positioning mechanism, an FPC positioning device, a display panel conduction device and a lighting test fixture, belonging to the technical field of display panel test fixtures, and in particular to an FPC positioning mechanism capable of correcting the position of an FPC, an FPC positioning device containing the FPC positioning mechanism, a display panel conduction device containing the FPC positioning device and a lighting test fixture containing the conduction device. Background Art

[0002] With the continuous advancement of science and technology and the rapid development of society, display panels are widely used in the fields of mobile phones, computers, etc. The quality of display panels directly affects the service life of electrical devices such as mobile phones and computer screens. In order to ensure the high quality of display panels, different performances of display panels need to be tested during the production process.

[0003] At present, for the display panel bound with FPC, when its different performances are tested, a conducting device is generally used to press the FPC on the display panel to transmit the signal to the display panel. Before the conducting device and the FPC are crimped, the operator generally manually realizes the alignment of the FPC and the conducting device with the naked eye. The typical structure of this alignment method is shown in the Chinese utility model patent CN207528859U, which discloses a detection and positioning device for the connector of the mobile phone display FPC, which includes a test board and a female seat arranged on the test board for buckling with the connector, and an auxiliary positioning device is provided on the test board and located on the periphery of the female seat. The auxiliary positioning device includes a positioning block, and a notch for accommodating the female seat is provided on the side of the positioning block. The shape of the notch is consistent with the shape of the display FPC where the connector is located on the female seat. Although the positioning block can ensure the alignment and crimping accuracy of the FPC and the conducting device, when the FPC line of sight is blocked or the FPC is tilted, the above device cannot realize the correction of the FPC position, so that there is a position deviation between the FPC and the conducting device, resulting in poor conduction of the display panel. Summary of the invention

[0004] In view of the defects of the above-mentioned prior art, the technical problem to be solved by the present invention is to provide an FPC positioning mechanism, an FPC positioning device, a display panel conduction device and a lighting test fixture that can correct the position of the FPC. The mechanism not only has a simple structure, but also can conveniently and quickly realize the correction of the position of the FPC based on the position of the crimping head of the conduction device, thereby ensuring the alignment and crimping accuracy of the FPC and the conduction device.

[0005] In order to solve the above technical problems, the present invention adopts an FPC positioning mechanism that can correct the position of the FPC, including a substrate for supporting the FPC, on which a lateral positioning structure for correcting the FPC along the width direction of the FPC and a longitudinal positioning structure for correcting the FPC along the length direction of the FPC are slidably provided, the lateral positioning structure includes at least a pair of lateral positioning blocks that can move along the width direction of the FPC, and the longitudinal positioning structure includes at least one longitudinal positioning block that can move along the length direction of the FPC.

[0006] In a preferred embodiment of the present invention, the lateral positioning structure comprises at least a pair of lateral positioning blocks that can be synchronously moved toward or away from each other along the width direction of the FPC.

[0007] In a preferred embodiment of the present invention, a transverse guide groove for slidingly connecting the transverse positioning block is processed on the substrate, the transverse guide groove is arranged along the width direction of the FPC, the groove depth of the transverse guide groove is less than the height of the transverse positioning block, and the spacing between the transverse guide grooves corresponds to the width of the FPC.

[0008] In a preferred embodiment of the present invention, a reset spring arranged along the width direction of the FPC is provided between the transverse guide groove and the transverse positioning block, and a limit baffle is fixed to the base plate for preventing the transverse positioning block from escaping from the transverse guide groove under the action of the reset spring.

[0009] In a preferred embodiment of the present invention, the lateral positioning block is in the shape of a cuboid, one end of the lateral positioning block is provided with a positioning reference surface for positioning the FPC, and the other end is provided with a driving wedge surface for driving the lateral positioning block to move.

[0010] In a preferred embodiment of the present invention, a longitudinal guide groove for slidingly connecting the longitudinal positioning block is processed on the substrate, the longitudinal guide groove is arranged along the length direction of the FPC, and the groove depth of the longitudinal guide groove is less than the height of the longitudinal positioning block.

[0011] In a preferred embodiment of the present invention, a reset spring arranged along the length direction of the FPC is provided between the longitudinal guide groove and the longitudinal positioning block, and a limit baffle is fixedly connected to the base plate for preventing the longitudinal positioning block from escaping from the longitudinal guide groove under the action of the reset spring.

[0012] In a preferred embodiment of the present invention, the longitudinal positioning block is in the shape of a cuboid, and one end of the longitudinal positioning block is provided with a positioning reference surface for positioning the FPC.

[0013] In a preferred embodiment of the present invention, an FPC positioning groove for positioning the FPC is processed on the substrate, the width of the FPC positioning groove is greater than the width of the FPC, and the width of the FPC positioning groove is greater than the spacing between the transverse guide grooves.

[0014] The present invention also discloses an FPC positioning device capable of correcting the position of an FPC, comprising the aforementioned FPC positioning mechanism and a driving structure for driving the lateral positioning block and the longitudinal positioning block of the FPC positioning mechanism to move.

[0015] In a preferred embodiment of the present invention, the driving structure includes a driving oil cylinder or a driving air cylinder or a linear driving mechanism.

[0016] In a preferred embodiment of the present invention, the output end of the driving structure is connected to the transverse positioning block and the longitudinal positioning block at the same time.

[0017] The present invention also discloses a conduction device for display panel detection, comprising an FPC positioning device and an FPC conduction needle mold, wherein the FPC positioning device is the aforementioned FPC positioning device capable of correcting the position of the FPC.

[0018] The invention also discloses a display panel lighting test fixture, which uses the aforementioned conduction device.

[0019] The beneficial effects of the present invention are as follows: the present invention has a simple structure and is easy to use. Regardless of whether the sight line of the FPC is blocked or not, and regardless of whether the FPC is tilted relative to the initial position of the crimping joint of the conducting device, the present invention can actively correct the position of the FPC and ensure that the FPC and the conducting device are accurately aligned, thereby ensuring that the display panel conduction problem caused by the position deviation between the FPC and the conducting device is avoided; the present invention realizes the correction of the FPC in the width direction and the length direction respectively by adding a synchronously moving transverse positioning structure and a longitudinal positioning block on the substrate carrying the FPC, so that the FPC can be actively corrected even if it is arranged obliquely relative to the conducting device; further, the present invention discloses a structural design for driving the movement of the transverse positioning block and the longitudinal positioning block, which includes a transverse guide groove and a longitudinal guide groove on the substrate, a return spring located in the transverse guide groove and the longitudinal guide groove, and a driving wedge surface on the transverse positioning block. The structure is not only compact, easy to install and maintain, but also can be conveniently installed as a whole on various display panel detection tooling; further, the present invention adds an FPC positioning groove on the substrate and ensures that the width of the FPC positioning groove is greater than the spacing between the transverse guide grooves, so that the FPC can be pre-positioned and the FPC alignment efficiency is improved; further, the FPC positioning device disclosed in the present invention synchronously drives the transverse positioning block and the longitudinal positioning block to synchronously move and position the FPC through the cylinder and the oil cylinder, which is not only compact in structure and small in temporary space, but also can realize the coordinated correction of the transverse position and the longitudinal position of the FPC in one step; further, the present invention discloses a display panel detection conduction device and a display panel detection lighting test fixture using the aforementioned FPC positioning device, which can effectively ensure the alignment accuracy of the FPC and the conduction device, eliminates the operator's manual alignment of the FPC, and improves the test efficiency of the display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 Schematic diagram of an FPC positioning mechanism capable of correcting the position of an FPC according to an embodiment of the present invention;

[0021] Figure 2 It is a schematic diagram of the working state of an FPC positioning mechanism capable of correcting the position of an FPC according to an embodiment of the present invention;

[0022] Figure 3 is a schematic diagram of a conduction device for display panel detection according to an embodiment of the present invention;

[0023] In the figure: 1-base plate; 2-lateral positioning structure; 3-longitudinal positioning structure; 4-reset spring; 5-limit baffle; 1.1-FPC positioning groove; 1.2-lateral guide groove; 1.3-longitudinal guide groove; 2.1-lateral positioning block; 3.1-longitudinal positioning block; A-FPC; B-pressure head of the conduction device; C-cylinder; D-spring for driving the horizontal guide groove to move. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0025] The present invention discloses an FPC positioning mechanism and device capable of correcting the position of an FPC, which can be used for various performance tests of various display panels bound with an FPC. Even when the sight line of the FPC is blocked and the initial arrangement position of the FPC is tilted, the FPC can be corrected according to the position of the pressure head of a conducting device, thereby ensuring accurate alignment and crimping of the FPC and the conducting device.

[0026] It mainly includes a substrate 1 for carrying an FPC. The substrate 1 is in a rectangular shape. An FPC positioning groove 1.1 for positioning the FPC is processed on the upper surface of the substrate 1. The width of the FPC positioning groove 1.1 is greater than the width of the FPC, thereby facilitating the initial positioning of the FPC without causing interference between the FPC and the substrate 1. The FPC positioning groove 1.1 is symmetrically processed with transverse guide grooves 1.2 on both sides of the transverse direction. The two transverse guide grooves 1.2 are arranged in a colinear manner along the width direction of the FPC. The transverse guide grooves 1.2 are arranged along the width direction of the FPC. The groove depth of the transverse guide grooves 1.2 is less than that of the transverse positioning block. 2.1, the spacing between the transverse guide grooves 1.2 corresponds to the width of the FPC, the width of the FPC positioning groove 1.1 is greater than the spacing between the transverse guide grooves 1.2, from the positions of the FPC positioning groove 1.1 and the transverse guide groove 1.2 shown in the accompanying drawings, it can be seen that there is an intersection surface between the FPC positioning groove 1.1 and the transverse guide groove 1.2, and a longitudinal guide groove 1.3 is provided at the front end of the FPC positioning groove 1.1. The longitudinal guide groove 1.3 is arranged along the length direction of the FPC, and the groove depth of the longitudinal guide groove 1.3 is less than the height of the longitudinal positioning block 3.1. The structure of the substrate 1 is composed of the above parts. In order to realize active correction of FPC, a transverse positioning block 2.1 is slidably connected in each of the two transverse guide grooves 1.2. The transverse positioning block 2.1 is in the shape of a rectangular parallelepiped. A positioning reference surface for positioning FPC is arranged on one end face of the transverse positioning block 2.1 facing the transverse guide groove 1.2. A driving wedge surface for driving the transverse positioning block 2.1 to move is arranged on one end face of the transverse positioning block 2.1 away from the transverse guide groove 1.2. A groove for limiting its moving position is processed on the upper end face of the transverse positioning block 2.1. A limiting baffle 5 for preventing the transverse positioning block 2.1 from escaping from the transverse guide groove 1.2 under the action of a reset spring 4 is fixed on the substrate 1. A reset spring 4 arranged along the width direction of the FPC is arranged between the transverse guide groove 1.2 and the transverse positioning block 2.1. Therefore, the transverse guide groove 1.2 can move along the width direction of the FPC under the action of an external force through the transverse guide groove 1.2. When the external force disappears, the return spring 4 works to return it to the limit baffle 5; preferably, the two lateral positioning blocks 2.1 of the present invention can be synchronously moved close to or synchronously moved away by a power source; a longitudinal positioning block 3.1 is slidably connected in the longitudinal guide groove 1.3, and the longitudinal positioning block 3.1 is in the shape of a rectangular parallelepiped. A positioning reference surface for positioning the FPC is provided on the end face of the longitudinal positioning block 3.1 facing the longitudinal guide groove 1.3. A return spring 4 is provided between the longitudinal guide groove 1.3 and the longitudinal positioning block 3.1 along the length direction of the FPC. A limit baffle 5 is fixed to the substrate 1 to prevent the longitudinal positioning block 3.1 from escaping from the longitudinal guide groove 1.3 under the action of the return spring 4. The longitudinal positioning block 3.1 can move along the length direction of the FPC under the guidance of the longitudinal guide groove 1.3 under the action of an external force. When the external force disappears, the return spring 4 works to return it to the limit baffle 5.The longitudinal positioning block 3.1 and the transverse positioning block 2.1 can be moved synchronously by a power source, and the driving structure for driving the longitudinal positioning block 3.1 and the transverse positioning block 2.1 to move includes a driving oil cylinder or a driving cylinder or a linear driving mechanism. Taking the driving cylinder as an example, the driving cylinder is arranged along the length direction of the FPC, and the piston rod end of the driving cylinder is directly fixed to the longitudinal positioning block 3.1. At the same time, the piston rod end of the driving cylinder is also fixed in parallel with two deformable springs, and the ends of the two springs are provided with wedge surfaces for cooperating with the driving wedge surface of the transverse positioning block 2.1. Preferably, the limit baffles 5 of the present invention are arranged along the length direction of the FPC and are fixed to the base plate 1 by bolts or screws.

[0027] When the FPC positioning mechanism and device of the present invention are working, even if the FPC is placed at an angle in the FPC positioning groove 1.1, when the driving cylinder is working, the movement of the longitudinal positioning block 3.1 and the transverse positioning block 2.1 can effectively correct the position of the FPC, so that it can be accurately aligned and crimped with the conductive device.

[0028] It should be pointed out that the above is a specific implementation scheme of the present invention, and the present invention is not limited to this technical scheme. For example, the FPC positioning groove 1.1 can be omitted in the design, and the transverse guide groove 1.2 and the longitudinal guide groove 1.3 are directly processed on the substrate 1.1 and the transverse positioning block 2.1 and the longitudinal positioning block 3.1 are respectively installed in the two grooves, which can also solve the technical problem to be solved by the present invention; further, the substrate 1.1 of the present invention can also not process the transverse guide groove 1.2 and the longitudinal guide groove 1.3, but by providing two parallel guide bosses or one guide rail, and then installing the transverse positioning block 2.1 and the longitudinal positioning block 3.1 on the guide boss or the guide rail, which can also solve the technical problem to be solved by the present invention. ; Further, the lateral positioning block 2.1 and the longitudinal positioning block 3.1 of the present invention can be driven by the same power source or by different power sources, and the two lateral positioning blocks 2.1 can be driven by the same power source or by different power sources, so that the driving wedge surface on the lateral positioning block 2.1 can also be omitted. In summary, the core idea of ​​the present invention is to correct the lateral position of the FPC by a pair of lateral positioning blocks 2.1 and the longitudinal position of the FPC by a longitudinal positioning block 3.1, so as to ensure the precise alignment and crimping of the FPC and the conductive device crimping joint. As for the structural form and driving mode of the lateral positioning block 2.1 and the longitudinal positioning block 3.1, they can be changed according to design requirements and usage conditions.

[0029] The present invention also discloses a conduction device for display panel detection, including a base, on which an FPC positioning device and a conduction device are fixedly connected, wherein the conduction device is as shown in the figure of the specification of Chinese patent CN207517340U, and the FPC positioning device is an FPC positioning device that can correct the position of the FPC. This integrated conduction device can not only realize accurate alignment and crimping of the FPC, but also the FPC positioning device and the conduction device can share a cylinder drive, so that while the FPC is fully corrected in position, the mobile positioning of the conduction device needle mold is realized, which greatly improves the use efficiency of the conduction device.

[0030] The FPC positioning device of the present invention can also be used on a display panel lighting test fixture.

[0031] It should be understood that the above is only a specific implementation of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a technician familiar with the field within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention.

Claims

1. An FPC positioning mechanism capable of correcting the position of an FPC, characterized in that: The invention is used for actively correcting the position of an FPC and ensuring accurate alignment of the FPC and a conducting device, and comprises a substrate (1) for carrying the FPC, wherein a lateral positioning structure (2) for correcting the FPC along the width direction of the FPC and a longitudinal positioning structure (3) for correcting the FPC along the length direction of the FPC are provided on the substrate (1) in a sliding manner, wherein the lateral positioning structure (2) comprises at least a pair of lateral positioning blocks (2.1) capable of moving along the width direction of the FPC, and the longitudinal positioning structure (3) comprises at least a longitudinal positioning block (2.2) capable of moving along the length direction of the FPC. The substrate (1) is provided with a transverse guide groove (1.2) for slidingly fitting and connecting the transverse positioning block (2.1); the transverse guide groove (1.2) is arranged along the width direction of the FPC; the groove depth of the transverse guide groove (1.2) is less than the height of the transverse positioning block (2.1); the spacing between the transverse guide grooves (1.2) corresponds to the width of the FPC; a return spring (4) is arranged along the width direction of the FPC between the transverse guide groove (1.2) and the transverse positioning block (2.1); the substrate (1 ) is fixedly connected to a limit baffle (5) for preventing the lateral positioning block (2.1) from being separated from the lateral guide groove (1.2) under the action of a return spring (4); the lateral positioning block (2.1) is in the shape of a rectangular parallelepiped, and one end of the lateral positioning block (2.1) is provided with a positioning reference surface for positioning the FPC, and the other end is provided with a driving wedge surface for driving the lateral positioning block (2.1) to move; the base plate (1) is processed with a longitudinal guide groove (1.3) for slidingly fitting and connecting the longitudinal positioning block (3.1), and the longitudinal guide groove (1.3) is along the length of the FPC. The longitudinal guide groove (1.3) is arranged in a longitudinal direction, the groove depth of the longitudinal guide groove (1.3) is less than the height of the longitudinal positioning block (3.1); a return spring (4) arranged along the length direction of the FPC is provided between the longitudinal guide groove (1.3) and the longitudinal positioning block (3.1); a limit baffle (5) is fixedly connected to the base plate (1) for preventing the longitudinal positioning block (3.1) from escaping from the longitudinal guide groove (1.3) under the action of the return spring (4); the longitudinal positioning block (3.1) is in the shape of a rectangular parallelepiped, and a positioning reference surface for positioning the FPC is provided at one end of the longitudinal positioning block (3.1).

2. The FPC positioning mechanism capable of correcting the position of the FPC according to claim 1, characterized in that: The substrate (1) is processed with an FPC positioning groove (1.1) for positioning the FPC, the width of the FPC positioning groove (1.1) is greater than the width of the FPC, and the width of the FPC positioning groove (1.1) is greater than the spacing between the transverse guide grooves (1.2).

3. An FPC positioning device capable of correcting the position of an FPC, characterized in that: It comprises an FPC positioning mechanism capable of correcting the position of an FPC as claimed in claim 1 or 2, and a driving structure for driving a lateral positioning block (2.1) and a longitudinal positioning block (3.1) of the FPC positioning mechanism capable of correcting the position of an FPC to move.

4. The FPC positioning device capable of correcting the position of the FPC according to claim 3, characterized in that: The driving structure includes a driving oil cylinder or a driving air cylinder or a linear driving mechanism.

5. The FPC positioning device capable of correcting the position of the FPC according to claim 3, characterized in that: The output end of the driving structure is connected to both the transverse positioning block (2.1) and the longitudinal positioning block (3.1).

6. A conduction device for display panel detection, comprising an FPC positioning device and an FPC conduction needle mold, characterized in that: The FPC positioning device is an FPC positioning device capable of correcting the position of the FPC as described in any one of claims 3 to 5.

7. A display panel lighting test fixture, characterized in that: An FPC positioning device capable of correcting the position of the FPC as described in any one of claims 3 to 5 is used.

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