WO2018028033A1

WO2018028033A1 - Semi-finished touchscreen tester based on magnetic switches

Info

Publication number: WO2018028033A1
Application number: PCT/CN2016/101028
Authority: WO
Inventors: 肖敏毅
Original assignee: 意力(广州)电子科技有限公司
Priority date: 2016-08-08
Filing date: 2016-09-30
Publication date: 2018-02-15
Also published as: CN106019127A; CN106019127B

Abstract

A semi-finished touchscreen tester based on magnetic switches (6), comprising a work chassis (1) provided therein with an open/short circuit test module and a capacitance test module and, provided on the work chassis (1), a test board (2), a test platform (3), and the magnetic switches (6). The magnetic switches (6) comprise first connecting terminals (61) serving as common terminals, second connecting terminals (62) serving as normally open terminals, and third connecting terminals (63) serving as normally closed terminals, where the first connecting terminals (61) are electrically connected to the test board (2), the second connecting terminals (62) are electrically connected to the open/short circuit test module, the third connecting terminals (63) are electrically connected to the capacitance test module, the test platform (3) is used for holding a product to be tested, and the test platform (3) is docked with the test board (2), thus allowing the test product to be electrically connected to the test board (2). The semi-finished touchscreen tester based on the magnetic switches (6) employs the magnetic switches (6) in place of conventional probes as connectors, thus reducing the maintenance frequency of the tester and reducing maintenance costs. In addition, the tester also is provided with a high degree of compatibility and the function of testing for a capacitance value in addition to testing for an open/short circuit value.

Description

Semi-finished touch screen tester based on magnetic switch

Technical field

The invention relates to the technical field of touch screens, and in particular to a semi-finished touch screen testing machine based on a magnetic switch.

Background technique

A capacitive touch screen is an important component for various smart terminal electronic devices that enables direct and natural interaction between the user and the electronic device. In the manufacturing process of the touch screen, the semi-finished touch screen is a touch screen that has formed a touch electrode for sensing the position of the touch point, but the touch electrode is not connected to the IC. Such semi-finished products need to be tested before being processed into finished products. In good condition to improve the yield of the finished touch screen.

In the prior art, the connector for the test machine mainly uses a probe. The probe is connected to the electrode lead of the product to read the data of the electrode in the ITO layer, and then the product is qualified by judging whether the relevant data is within a predetermined value range. However, with the large-scale production of this type of test machine and the long-term use of the tester, the connector is prone to deformation of the probe, easy to break when the air pressure is too large, and the probe is clogged with a probe after a long time of use. As a result, the maintenance frequency is too high, which indirectly increases the production cost of the product.

In addition, in the prior art, since the IC is not connected to the touch screen of the semi-finished product, when testing the semi-finished touch screen, it is necessary to connect it to the IC first, and then perform semi-finished function test to determine whether the semi-finished product is qualified. However, there are many IC brands that can support the touch screen industry, and each IC has its own independent testing methods. However, these test methods cannot guarantee that the short-circuit materials can be effectively detected, and the methods are not universal. This aspect will lead to the performance defect of the semi-finished touch screen after the detection; on the other hand, the semi-finished touch screen with different ICs will need to use different ICs and their testing methods, and correspondingly, the test boards for different semi-finished touch screens. It also needs to be developed and replaced in time. When there are many types of touch screens in touch screen manufacturers, it is necessary to develop a variety of semi-finished touch screen test boards, which increases the test cost and consumes a lot of manpower and material resources.

Summary of the invention

The object of the present invention is to provide a semi-finished touch screen testing machine based on a magnetic switch, so as to solve the problem that the existing semi-finished touch screen testing machine based on the magnetic switch is difficult to effectively detect all short-circuit materials, and It is difficult for test machines to be used for different types and sizes of touch screens.

The technical solution of the present invention is as follows:

The invention provides a semi-finished touch screen testing machine based on a magnetic switch, comprising a working case with a short-circuit test module and a capacitance test module, a test board and a test platform on the working case, and a magnetic switch, the magnetic switch The first connection end as a common end, the second connection end as a normally open end, and the third connection end as a normally closed end, wherein the first connection end is electrically connected to the test board, and the second connection end is connected to The short-circuit test module is electrically connected, the third connection end is electrically connected to the capacitance test module, the test platform is used for placing a product to be tested, and the test platform is docked with the test board to The product to be tested is electrically connected to the test board.

Optionally, the magnetic switch is one of a reed switch or a magnetic switch. Preferably, the magnetic switch is a reed switch.

[IC] Further, an IC is provided in the short-circuit test module and/or the capacitance test module, and the IC is an IC of Atmel Corporation.

[First Lifting Device] Further, the magnetic switch-based semi-finished touch screen testing machine further includes a first lifting frame disposed above the working chassis and a first lifting device moving up and down relative to the first supporting frame a vertical projection of the first lifting device on the working chassis is located at abutment between the test platform and the test board, and the first lifting device is lowered to an interface between the test platform and the test board The test product placed on the test platform is electrically connected to the test board.

[First Lifting Device-Specific] Further, the first lifting device includes a first cylinder fixed to the first support frame and a first pressure plate electrically connected to the first cylinder, the first The pressure plate is located below the first support frame and moves up and down relative to the first support frame, and the first cylinder pushes the first pressure plate down to the docking point of the test platform and the test board, so that the pressure plate is placed The product to be tested on the test platform is electrically connected to the test board.

[First Guide Post] Further, the first lifting device further includes a first guide post, the first guide post vertically passes through the first support frame and the first guide post and the first The pressure plate is fixedly coupled to move the first pressure plate up and down in a vertical direction.

[Second Lifting Device] Further, the magnetic switch-based semi-finished touch screen testing machine further includes a second support frame disposed above the work case and opposite to the second support frame a moving second lifting device, a vertical projection of the second lifting device on the working cabinet is located at the magnetic switch, and when the second lifting device is lowered to the magnetic switch, the test board is The short circuit test module is electrically connected, and the second lifting device is electrically connected to the capacitor test module when the second lifting device is raised away from the magnetic switch.

[Second lifting device-specific] Further, the second lifting device includes a second cylinder fixed to the second support frame and a second pressure plate electrically connected to the second cylinder, the second a pressure plate is located below the second support frame and moves up and down relative to the second support frame, the second pressure plate is magnetic material, and when the second cylinder pushes the second pressure plate down to the magnetic switch, The first connection end of the magnetic switch is electrically connected to the second connection end, and the first connection end is disconnected from the third connection end, so that the test board and the short-circuit test module are Electrically connecting, when the second cylinder pulls the second pressure plate to rise away from the magnetic switch, the first connection end of the magnetic switch is electrically connected to the third connection end, and the first The connection end is disconnected from the second connection end to electrically connect the test board to the capacitance test module.

[Second Pillar] Further, the second lifting device further includes a second guiding post, the second guiding post vertically passes through the second supporting frame and the second guiding post and the second The pressure plate is fixedly coupled to move the second pressure plate up and down in a vertical direction.

[ccd aligning device] Further, the first support frame is further provided with a CCD aligning device, and the CCD aligning device is configured to enlarge the electrical connection position of the product to be tested and the test board And the opposite.

[Fine adjustment device] Further, an adjustment knob is further disposed on the test platform, and the adjustment knob is used to adjust an electrical connection position between the product to be tested and the test board.

[Display] Further, the semi-finished touch screen tester further includes a display screen disposed above the work cabinet, the display screen being electrically connected to the CCD alignment device, and the display screen is used to display the passing display The electrically connected position of the product to be tested and the test board after the CCD alignment device is enlarged, so that the adjustment knob adjusts the electrical connection position of the product to be tested and the test board.

[Application] Optionally, the magnetic switch-based semi-finished touch screen tester is used to test the size of the semi-finished touch screen is less than or equal to 7 inches. For example, the magnetic switch-based semi-finished touch screen tester is used to test a semi-finished touch screen having dimensions of 7 inches, 6 inches, 5.5 inches, 5 inches, 4.5 inches, 4 inches, 3.8 inches, or 3.5 inches.

Optionally, the magnetic switch-based semi-finished touch screen tester is used to test GFF, GF1 or Semi-finished touch screen with GF2 structure.

Compared with the prior art, the present invention has the following beneficial effects:

In the present invention, a short-circuit test module and a capacitance test module are respectively disposed inside the working chassis, and the semi-finished touch screen placed in the test platform is electrically connected with the test board to finally realize the connection with the short-circuit test module or the capacitance test module. Therefore, the short-circuit value of the ITO layer in the semi-finished touch screen can be tested, and the capacitance value of the ITO layer can be measured, so that the short-circuit material of the semi-finished touch screen can be effectively detected. In addition, in the present invention, a magnetic switch is used instead of the conventional probe as a connector, which can effectively reduce the maintenance probability and reduce the maintenance cost. Moreover, the test machine of the present invention has high compatibility, because Atmel's IC can support up to 32 electrodes in the X direction and up to 52 electrodes in the Y direction, so it can be compatible with various types of tests. The semi-finished touch screen corresponding to the IC, and also capable of testing semi-finished touch screens of different structures.

DRAWINGS

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings to be used in the embodiments will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the present invention. Those skilled in the art can also obtain other drawings based on these drawings without paying any creative work.

1 is a schematic structural view of a semi-finished touch screen testing machine based on a magnetic switch according to a second embodiment of the present invention;

2 is a schematic structural view of a semi-finished touch screen testing machine based on a magnetic switch according to a second embodiment of the present invention (the first support frame, the first lifting device, and the CCD alignment device are omitted);

3 is a schematic structural view of a first support frame, a first lifting device, and a CCD alignment device according to Embodiment 2 of the present invention.

4 is a schematic structural view of a magnetic switch in the second embodiment of the embodiment.

detailed description

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

Embodiment 1

The embodiment provides a semi-finished touch screen testing machine based on a magnetic switch, comprising a working chassis internally provided with a short-circuit test module and a capacitance test module, a test board and a test platform located on the working chassis, and a magnetic switch, The magnetic switch includes a first connection end as a common end, a second connection end as a normally open end, and a third connection end as a normally closed end, wherein the first connection end is electrically connected to the test board, and the second connection The end is electrically connected to the short circuit test module, the third connection end is electrically connected to the capacitance test module, the test platform is used for placing a product to be tested, and the test platform is connected with the test board. So that the product to be tested is electrically connected to the test board.

Embodiment 2

As shown in FIG. 1 to FIG. 3 , the present embodiment provides a semi-finished touch screen testing machine based on a magnetic switch, including a working chassis 1 and test boards 2 and test platforms 3 respectively disposed at different positions on the working chassis 1. The support frame 41, the first lifting device 51, the second support frame 42, the second lifting device 52, and the magnetic switch 6.

Wherein, the working chassis 1 is provided with a short-circuit test module and a capacitance test module, and the short-circuit test module and/or the capacitance test module are provided with an Atmel company IC for driving the short-circuit test module to the semi-finished touch screen. The short-circuit test and the drive capacitance test module perform capacitance tests on the semi-finished touch screen. Because Atmel's IC has high compatibility, it can support up to 32 electrodes in the X direction and up to 52 electrodes in the Y direction. It is compatible with the semi-finished touch screens of various ICs. Test semi-finished touch screens of different structures.

The test board 2 is a PCB circuit board, and the test platform 3 is used for placing a product to be tested (ie, a semi-finished touch screen to be tested), and the test platform 3 is docked with the test board 2 to enable the product to be tested placed in the test platform 3. (not shown) is electrically connected to the test board 2, specifically, the electrode lead of the product to be tested is electrically connected to the gold finger in the test board 2. The magnetic switch 6 in this embodiment is specifically a reed switch, and the magnetic switch 6 includes a first connecting end 61 as a common end, a second connecting end 62 as a normally open end, and a third connecting end 63 as a normally closed end, and first The connection end 61 is electrically connected to the test board 2, the second connection end 62 is electrically connected to the short-circuit test module, and the third connection end is electrically connected to the capacitance test module.

The first support frame 41 is disposed above the work case 1 , and the first lifting device 51 is movably connected to the first support frame 41 and moves up and down relative to the first support frame 41 . Specifically, the first lifting device 51 includes a first cylinder 511, a first pressure plate 512, and a first guide post 513. The first cylinder 511 is fixed to the first The support frame 41 is configured to provide the first pressure plate 512 with power for moving up and down. The first pressure plate 512 is connected to the first cylinder 511, and the first pressure plate 512 is disposed below the first support frame 41 and moves up and down relative to the first support frame 41. The first pressure plate 512 is vertical on the working chassis 1. The projection is located at the docking of the test platform 3 and the test board 2. The first guide post 513 vertically passes through the first support frame 41 and is fixedly coupled to the first pressure plate 512 for positioning and guiding the vertical movement of the first pressure plate from the vertical direction. When the first cylinder 511 pushes the first pressure plate 512 down to the interface between the test platform 3 and the test board 2, the product to be tested placed on the test platform 3 is electrically connected to the test board 2.

The second support frame 42 is located behind the first support frame 41 and the second support frame 42 is disposed above the work case 1. The second lifting device 52 is movably connected with the second support frame 42 and opposite to the second support frame. The frame 42 moves up and down. Specifically, the second lifting device 52 includes a second cylinder 521, a second pressure plate 522 made of a magnetic material, and a second guide post 523. The second cylinder 521 is fixed to the second support frame 42 for providing the second pressure plate 522 with power for moving up and down. The second pressure plate 522 is dynamically connected to the second cylinder 521 , and the second pressure plate 522 is disposed below the second support frame 42 and moves up and down relative to the second support frame 42 . The second pressure plate 522 is vertical on the working chassis 1 . The projection is located near the magnetic switch 6, in particular at the second connection 62 and the third connection 63 of the magnetic switch 6. The second guiding post 523 vertically passes through the second supporting frame 42 and is fixedly connected with the second pressing plate 522 for positioning and guiding the vertical movement of the second pressing plate 522 from the vertical direction. . When the second cylinder 521 pushes the second pressure plate 522 to be close to the magnetic switch 6, since the second pressure plate is magnetic material, the magnetic field of the magnetic switch 6 is affected, and the first connection end 61 and the second connection end 62 of the magnetic switch 6 are caused. The first connection end 61 is disconnected from the third connection end 63, thereby electrically connecting the test board 2 to the short-circuit test module; when the second cylinder 521 pulls the second pressure plate 522 to rise away from the magnetic switch 6, due to the The influence of the second pressure plate on the magnetic switch 6 disappears, the first connection end 61 of the magnetic switch 6 is electrically connected to the third connection end 63, the first connection end 61 and the second connection end 62 are disconnected, and the test board 2 is made to be a magnetic switch. 6 Electrically connected to the capacitance test module.

The magnetic switch-based semi-finished touch screen tester of the present embodiment further includes a CCD alignment device 7 disposed on the first support frame 41, and the CCD alignment device 7 is configured to perform electrical connection between the product to be tested and the test board 2. Zoom in and align to ensure that the electrical connections are accurate.

The magnetic switch-based semi-finished touch screen testing machine of the present embodiment further includes an adjustment knob 31 disposed on the test platform 3 for fine-tuning the electrical connection position of the product to be tested and the test board 2.

In addition, the magnetic switch-based semi-finished touch screen testing machine of the embodiment further includes being set at work. a display screen (not shown) above the chassis 1 , the display screen is electrically connected to the CCD alignment device 7 for displaying the electrical connection position of the product to be tested and the test board after being amplified by the CCD alignment device (specifically The position of the electrode lead of the product to be tested of the product to be tested and the gold finger of the test board 2), so that the adjusting knob can conveniently adjust the electrode lead of the product to be tested and the gold finger of the test board 2 according to the image on the display screen) The connection position makes the electrode lead and the gold finger reliably coincide.

In this embodiment, the semi-finished touch screen tester based on the magnetic switch is used to test the size of the semi-finished touch screen to be less than or equal to 7 inches. For example, a semi-finished touch screen tester based on a magnetic switch is used to test a semi-finished touch screen having dimensions of 7 inches, 6 inches, 5.5 inches, 5 inches, 4.5 inches, 4 inches, 3.8 inches, or 3.5 inches. In addition, the magnetic switch-based semi-finished touch screen tester of the present embodiment is used to test a semi-finished touch screen of GFF, GF1 or GF2 structure.

The magnetic switch-based semi-finished touch screen tester of the embodiment firstly places the product to be tested on the test platform 3, and the electrode lead of the product to be tested is docked with the gold finger of the test board 2; The device 51 lowers the first pressure plate 512 to the interface between the product to be tested and the test board 2, so that the product to be tested is electrically connected to the test board 2, and one end of the magnetic switch 6 is electrically connected to the test board 2. Then, the second pressing plate 522 is lowered to a position close to the magnetic switch 6 by the second lifting device 52. Since the second pressing plate 522 is made of a magnetic material, the magnetic switch 6 is affected, so that the other end of the magnetic switch 6 is broken. The short-circuit test module is electrically connected, thereby electrically connecting the product to be tested and the short-circuit test module to achieve a short-circuit test of the product to be tested; finally, the second platen 522 is raised by the second lifting device 52 to make the first The second pressure plate 522 is away from the magnetic switch 6, and the influence of the second pressure plate 522 on the magnetic switch 6 disappears, so that the other end of the magnetic switch 6 is electrically connected to the capacitance test module, thereby making the product to be tested. Electrical connection between the test module and the capacitor, is done to achieve the measured capacitance test products.

In addition, the semi-finished touch screen testing machine of this embodiment is further provided with an indicator light for reacting the test result and a reset button for restoring the test state of the semi-finished touch screen tester. When the test result of the product to be tested is qualified, the first indicator light (such as the green LED light) on the working chassis lights up; when the test result of the product to be tested is unqualified, the second indicator light located on the working chassis (For example, the red LED light) lights up, at this time, the first pressure plate 512 does not automatically lift, and the first pressure plate needs to be lifted by operating the reset button to continue the test work.

The semi-finished touch screen testing machine of the embodiment is electrically connected to the computer, so that the test data of the semi-finished touch screen testing machine can be transmitted and saved to the computer, and displayed through the display of the computer. Test results and data.

The description of the above embodiments is only for helping to understand the method and the core idea of the present invention; at the same time, for those skilled in the art, according to the idea of the present invention, there are some changes in the specific embodiments and application scopes. In summary, the content of the specification should not be construed as limiting the invention.

Claims

A semi-finished touch screen testing machine based on a magnetic switch, comprising: a working chassis internally provided with a short circuit test module and a capacitance test module; a test board and a test platform located on the working case; and a magnetic switch, the magnetic The switch includes a first connection end as a common end, a second connection end as a normally open end, and a third connection end as a normally closed end, wherein the first connection end is electrically connected to the test board, and the second connection end Electrically connecting with the short-circuit test module, the third connection end is electrically connected to the capacitance test module, the test platform is used for placing a product to be tested, and the test platform is docked with the test board, The electrical product to be tested is electrically connected to the test board.
The magnetic switch-based semi-finished touch screen testing machine according to claim 1, wherein the magnetic switch is one of a reed switch or a magnetic switch.
The magnetic switch-based semi-finished touch screen testing machine according to claim 1, wherein the short circuit test module and/or the capacitance test module are provided with an IC, and the IC is an IC of Atmel Corporation.
The magnetic switch-based semi-finished touch screen testing machine according to any one of claims 1 to 3, wherein the magnetic switch-based semi-finished touch screen testing machine further comprises a first support spanning over the working case a first lifting device that moves up and down relative to the first support frame, a vertical projection of the first lifting device on the working chassis is located at abutment between the test platform and the test board, the first lifting When the device is lowered to the interface between the test platform and the test board, the product to be tested placed on the test platform is electrically connected to the test board.
The magnetic switch-based semi-finished touch screen testing machine according to claim 4, wherein the first lifting device comprises a first cylinder fixed to the first support frame and is electrically connected to the first cylinder a first pressure plate, the first pressure plate is located below the first support frame and moves up and down relative to the first support frame, the first cylinder pushes the first pressure plate down to the test platform and the When the interface of the test board is connected, the product to be tested placed on the test platform is electrically connected to the test board.
The magnetic switch-based semi-finished touch screen testing machine according to claim 5, wherein the first lifting device further comprises a first guiding post, the first guiding column vertically passes through the first supporting frame and The first guide post is fixedly coupled to the first pressure plate to move the first pressure plate up and down in a vertical direction.
The magnetic switch-based semi-finished touch screen testing machine according to claim 4, wherein the magnetic switch-based semi-finished touch screen testing machine further comprises a second support frame disposed above the work case and opposite to a second lifting device that moves up and down the second support frame, a vertical projection of the second lifting device on the working chassis is located at the magnetic switch, and when the second lifting device is lowered to the magnetic switch, The test board is electrically connected to the short-circuit test module, and when the second lift device is raised away from the magnetic switch, the test board is electrically connected to the capacitance test module.
The magnetic switch-based semi-finished touch screen testing machine according to claim 7, wherein the second lifting device comprises a second cylinder fixed to the second support frame and is electrically connected to the second cylinder a second pressure plate, the second pressure plate is located below the second support frame and moves up and down relative to the second support frame, the second pressure plate is magnetic material, and the second cylinder pushes the second pressure plate When the magnetic switch is lowered, the first connection end of the magnetic switch is electrically connected to the second connection end, and the first connection end is disconnected from the third connection end, so that the The test board is electrically connected to the short-circuit test module, and the first connection end of the magnetic switch is connected to the third connection when the second cylinder pulls the second pressure plate to rise away from the magnetic switch The terminal is electrically connected, and the first connecting end is disconnected from the second connecting end, so that the test board is electrically connected to the capacitance testing module.
The magnetic switch-based semi-finished touch screen testing machine according to claim 1, wherein the magnetic switch-based semi-finished touch screen testing machine is used to test the size of the semi-finished touch screen to be less than or equal to 7 inches.
The magnetic switch-based semi-finished touch screen testing machine according to claim 1, wherein the magnetic switch-based semi-finished touch screen testing machine is used for testing a semi-finished touch screen of GFF, GF1 or GF2 structure.