CN220820205U

CN220820205U - Detection system for preventing FPC resistance cold joint

Info

Publication number: CN220820205U
Application number: CN202322450007.0U
Authority: CN
Inventors: 何开文
Original assignee: Chongqing Liangjiang Lianchuang Electronic Co ltd
Current assignee: Chongqing Liangjiang Lianchuang Electronic Co ltd
Priority date: 2023-09-11
Filing date: 2023-09-11
Publication date: 2024-04-19
Anticipated expiration: 2033-09-11

Abstract

The utility model provides a detection system for preventing the cold joint of FPC resistor, which is characterized by comprising a first FPC, a second FPC, a testing machine connected with the first FPC and the second FPC and a control machine for controlling the testing machine, wherein the first FPC and the second FPC respectively comprise a component area far away from the testing machine and a connecting area close to the testing machine, a first resistor is arranged on the component area of the first FPC, a second resistor is arranged on the component area of the second FPC, an adapter plate is arranged in the testing machine, a GND interface end electrically connected with the first resistor, an IOVCC interface end electrically connected with the second resistor and a connecting end electrically connected with the connecting area are arranged on the adapter plate, the first resistor and the second FPC are inserted into the testing machine, and the first resistor and the second resistor are respectively connected with the GND interface end and the IOVCC interface end so that the voltages on the first resistor and the second resistor are reacted to the testing machine.

Description

Detection system for preventing FPC resistance cold joint

Technical Field

The utility model relates to the technical field of manufacturing of display modules, in particular to a detection system for preventing FPC (flexible printed circuit) resistance cold joint.

Background

For display screen modules on mobile phones, flat plates and notebooks, the same model has a plurality of module manufacturers, and in order to manage and control each module manufacturer, a complete machine factory needs to increase hardware voltage on an FPC to identify the screen of each module manufacturer.

In order to ensure that the phenomenon of false welding, false welding and mistaking parts and loosening and falling of the resistor components are inevitably caused when the parts are manufactured by an STM (scanning management tool) manufacturing factory, the problem that the voltage cannot be read in the whole machine during assembly so that a parameter screen in a whole machine code cannot be displayed is solved, and the quality is usually recognized through one-to-one microscopic inspection and multimeter measurement under a microscope, but the detection mode is quite labor-consuming.

Disclosure of utility model

Aiming at the defects of the prior art, the utility model aims to provide a detection system for preventing the cold joint of the FPC resistor, which aims to solve the technical problem that the labor is very consumed in the prior art by identifying the quality of the resistor on the FPC through one-to-one microscopic examination and multimeter measurement.

In order to achieve the above object, the present utility model is achieved by the following technical scheme:

The utility model provides a prevent detection system of FPC resistance rosin joint, includes first FPC, second FPC, with first FPC with the test machine that second FPC connects, and be used for controlling the control machine of test machine, first FPC with the second FPC all includes keeping away from the components and parts district of test machine, and be close to the connecting area of test machine, be equipped with first resistance on the components and parts district of first FPC, be equipped with the second resistance on the components and parts district of second FPC, the inside of test machine is equipped with the keysets, be equipped with on the keysets with first resistance electric connection's GND interface end, with second resistance electric connection's IOVCC interface end, and with connecting area electric connection's link, first FPC with second FPC inserts the test machine, first resistance with the second resistance respectively with GND interface end with the voltage reaction on the second resistance is to the test machine.

Compared with the prior art, the utility model has the beneficial effects that:

Because the display module of a model is made by a plurality of different module manufacturers, each module manufacturer can set a resistor on the FPC of the display module produced by the module manufacturer, which is called a first resistor and a second resistor, by utilizing the situation, a testing machine is set, a GND interface end corresponding to the first resistor and an IOVCC interface end corresponding to the second resistor are arranged on the testing machine, and a controller for supplying power to the testing machine is arranged.

Further, an insertion opening for exposing the connection end is formed in the testing machine, and the connection area is inserted into the insertion opening so that the connection area is in contact with the connection end.

Further, a USB downloader interface and an MIPI interface are provided on the testing machine, the USB downloader interface is close to the insertion port, the MIPI interface is located on the upper surface of the testing machine, an MIPI interface end is provided on the adapter board, the MIPI interface end passes through the MIPI interface and is exposed on the surface of the testing machine, and the USB downloader interface and the MIPI interface end are connected with an external computer end and are used for providing a program for the testing machine.

Furthermore, the testing machine and the control machine are both provided with a D/C power interface.

Furthermore, the test machine and the control machine are provided with connectors, and the connectors of the test machine and the control machine are connected through connecting wires.

Further, the control machine is provided with a plurality of control keys for controlling the testing machine.

Furthermore, the adapter plate is also provided with a hot plug interface.

Furthermore, the adapter plate is also provided with a VSP interface end and a VSN interface end, and the IOVCC interface end, the VSP interface end and the VSN interface end are all connected with current limiting resistors in series.

Furthermore, TVS tubes are sleeved on the IOVCC interface end, the GND interface end, the VSP interface end, and the VSN interface end.

Further, a display screen is arranged above the testing machine and used for reflecting the voltages at the first resistor and the second resistor.

Drawings

FIG. 1 is a schematic diagram of an overall structure of a detection system for preventing FPC resistance cold joint in an embodiment of the present utility model;

FIG. 2 is a schematic diagram of the tester of FIG. 1;

FIG. 3 is a schematic diagram of the control machine of FIG. 1;

FIG. 4 is a schematic view of the transfer plate of FIG. 1;

Description of main reference numerals:

Test machine	10	Control machine	20
				Adapter plate	30	First FPC	40
Second FPC	45	Connection region	41
				Component area	42	MIPI interface end	11
Display screen	12	Insertion opening	13
				USB downloader interface	14	D/C power interface	15
Control key	21	Connecting wire	22
				MIPI interface	16	Current limiting resistor	32
Hot plug interface	33	Connecting terminal	34

The utility model will be further described in the following detailed description in conjunction with the above-described figures.

Detailed Description

In order that the utility model may be readily understood, a more complete description of the utility model will be rendered by reference to the appended drawings. Several embodiments of the utility model are presented in the figures. This utility model may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "mounted" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1 to 4, a detection system for preventing a virtual soldering of an FPC resistor in an embodiment of the present utility model is shown, including a first FPC40, a second FPC45, a testing machine 10 connected to the first FPC40 and the second FPC45, and a controller 20 for controlling the testing machine 10, where the first FPC40 and the second FPC45 each include a component area 42 far away from the testing machine 10 and a connection area 41 near the testing machine 10, a first resistor is disposed on the component area 42 of the first FPC40, a second resistor is disposed on the component area 42 of the second FPC45, an adapter board 30 is disposed in the testing machine 10, a GND interface end electrically connected to the first resistor, an iointerface end electrically connected to the second resistor, and a connection end 34 electrically connected to the connection area 41 are disposed on the testing board 30, and the first FPC40 and the second FPC45 are inserted into the testing machine 10, and the first resistor and the second FPC are respectively connected to the vcc interface end and the second interface end of the vcc resistor to the testing machine 10.

It can be understood that, because a display module of a model is made by a plurality of different module manufacturers, each module manufacturer sets a resistor on the FPC of the display module produced by the module manufacturer, which is referred to herein as a first resistor and a second resistor, by using this condition, a testing machine 10 is set, and a GND interface end corresponding to the first resistor and an IOVCC interface end corresponding to the second resistor are set on the testing machine 10, and a controller 20 for supplying power to the testing machine 10 is set, when the first resistor on the first FPC40 is inserted into the testing machine 10, it is connected with the GND interface end according to the trace in the adapter 30, and a voltage at the resistor is obtained, and when the second resistor on the second FPC45 is inserted into the testing machine 10, it is connected with the IOVCC interface end according to the trace in the adapter 30, and a voltage at the resistor is obtained, and a worker compares the voltage with a threshold range, so that the manufacturer can judge whether the module of the FPC has a welding, a false welding, a loose piece or a loose piece exists or not, thus the labor efficiency is improved, and the labor efficiency is further reduced.

Specifically, the test machine 10 is provided with an insertion opening 13 for exposing the connection end 34, the connection area 41 is inserted into the insertion opening 13, so that the connection area 41 contacts with the connection end 34, a display screen 12 is disposed above the test machine 10, and the display screen 12 is used for reflecting voltages at the first resistor and the second resistor.

It can be understood that the connection area 41 of the first FPC40 contacts with the connection end 34 on the adapter board 30 through the insertion opening 13 of the testing machine 10, then the controller 20 sends a signal to energize the testing machine 10, the first resistor is electrically connected with the GND interface, the I/O port on the testing machine 10 reads the voltage on the first resistor and reflects it to the display screen 12, and by comparing the range of the value with the voltage range of the FPC manufactured by each preset module manufacturer, it can be determined which module manufacturer the FPC belongs to, and at the same time, it is determined whether the range of the value meets the voltage range of the normal resistor, so as to determine whether the FPC is cold soldered;

Similarly, the connection area 41 of the second FPC45 is contacted with the connection terminal 34 on the interposer 30 through the insertion port 13 of the tester 10, so as to determine which module manufacturer the FPC belongs to, and determine whether the FPC is soldered in a fault.

Further, the control unit 20 is provided with a plurality of control buttons 21 for controlling the testing unit 10.

Specifically, the control keys 21 include, but are not limited to:

And (3) outputting keys: as a switch for controlling whether or not current is output into the tester 10 to illuminate the display module;

Upturning and down Revise the case pieces: the picture is switched up and down, when the resistor is in the cold joint, the voltage range is not in the normal range, and the picture can not be switched up and down;

adding and subtracting keys: the device is used for a burning station and adjusting screen flicker;

The confirmation key: for suspending the operation, if the operator wants to watch the screen for a while, the key can be pressed;

Standby key: for replacing the output key, if the output key fails, this key is replaced.

Further, the tester 10 and the controller 20 are provided with D/C power interfaces 15, which are 12V voltage interfaces, for providing power to the tester 10 and the controller 20.

Further, the test machine 10 and the controller 20 are respectively provided with a connection port, and the connection port of the test machine 10 and the connection port of the controller 20 are connected through a connection line 22.

It will be appreciated that the tester 10 and the controller 20 are connected by the connection line 22 so as to be electrically connected.

Further, the testing machine 10 is provided with a USB downloader interface 14 and an MIPI interface 16, the USB downloader interface 14 is disposed near the insertion port 13, the MIPI interface 16 is disposed on the upper surface of the testing machine 10, the adapter board 30 is provided with an MIPI interface end 11, the MIPI interface end 11 is exposed to the surface of the testing machine 10 through the MIPI interface 16, and the USB downloader interface 14 and the MIPI interface end 11 are both connected with an external computer end for providing a program for the testing machine 10.

It will be appreciated that to optimize the efficiency of the overall system, the program may be updated at the external computer side and then imported into the tester 10 via the USB downloader interface 14 and MIPI interface 16 to optimize the tester 10.

Further, the adapter plate 30 is further provided with a hot plug interface 33.

It will be appreciated that hot plug interface 33 prevents the operator from operating the hot plug interface so that the operator burns out the product lines and that tester 10 is not powered up when hot plug interface 33 is not closed.

Further, the adapter plate 30 is further provided with a VSP interface end and a VSN interface end, and the IOVCC interface end, the VSP interface end and the VSN interface end are all connected in series with a current limiting resistor 32, and the resistance value of the current limiting resistor 32 is 10Ω.

It can be understood that the three-way power supply is connected in series with a current limiting resistor 32 of 10Ω, so as to mainly prevent the product from being burnt out due to excessive instantaneous current during power-up.

It can be appreciated that TVS tubes mainly prevent ESD from damaging the product too much during production in the production line.

In summary, in the detection system for preventing the FPC from being damaged by the electrical resistance in the above embodiment of the present utility model, a testing machine is provided, and a GND interface end corresponding to the first electrical resistance and an IOVCC interface end corresponding to the second electrical resistance are provided on the testing machine, and a controller for supplying power to the testing machine is provided.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The foregoing examples illustrate only a few embodiments of the utility model and are described in detail herein without thereby limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.

Claims

1. The utility model provides a prevent detection system of FPC resistance rosin joint, its characterized in that includes first FPC, second FPC, with first FPC with the test machine that the second FPC is connected, and be used for controlling the control machine of test machine, first FPC with the second FPC all includes keeping away from the components and parts district of test machine, and be close to the connecting region of test machine, be equipped with first resistance on the components and parts district of first FPC, be equipped with the second resistance on the components and parts district of second FPC, the inside of test machine is equipped with the keysets, be equipped with on the keysets with first resistance electric connection's GND interface end, with second resistance electric connection's IOVCC interface end, and with connecting region electric connection's link, first FPC with second FPC inserts the test machine, first resistance with second resistance respectively with GND interface end with the voltage on the second resistance reacts to on the test machine.

2. The system according to claim 1, wherein the tester is provided with an insertion opening for exposing the connection terminal, and the connection area is inserted into the insertion opening so that the connection area is in contact with the connection terminal.

3. The detection system for preventing FPC resistance cold joint according to claim 2, wherein a USB downloader interface and an MIPI interface are provided on the tester, the USB downloader interface is disposed near the insertion port, the MIPI interface is disposed on the upper surface of the tester, an MIPI interface end is disposed on the adapter plate, the MIPI interface end passes through the MIPI interface and is exposed on the surface of the tester, and the USB downloader interface and the MIPI interface end are both connected with an external computer end for providing a program for the tester.

4. The system of claim 1, wherein the tester and the controller are provided with D/C power interfaces.

5. The detection system for preventing FPC resistance cold joint according to claim 1, wherein the connection ports are provided on the tester and the controller, and the connection ports of the tester and the controller are connected by a connection line.

6. The system for preventing FPC resistance cold joint as defined in claim 1, wherein a plurality of control keys for controlling said tester are provided on said controller.

7. The system for preventing FPC resistance cold joint as set forth in claim 3, wherein said adapter plate is further provided with a hot plug interface.

8. The detection system for preventing FPC resistance cold joint according to claim 3, wherein the adapter plate is further provided with a VSP interface end and a VSN interface end, and the IOVCC interface end, the VSP interface end and the VSN interface end are all connected in series with a current limiting resistor.

9. The system of claim 8, wherein TVS tubes are sleeved on the IOVCC interface, the GND interface, the VSP interface, and the VSN interface.

10. The system of claim 1, wherein a display screen is disposed above the tester, the display screen being configured to reflect voltages at the first resistor and the second resistor.