WO2018028032A1

WO2018028032A1 - Semi-manufactured touch screen testing machine

Info

Publication number: WO2018028032A1
Application number: PCT/CN2016/101027
Authority: WO
Inventors: 李世林
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: CN206002626U

Abstract

Provided is a semi-manufactured touch screen testing machine, comprising a working case (1), and a test board (2) and a test platform (3) provided on the working case (1). An open-short-circuit test module and a capacitance test module are provided inside the working case (1). The test board (2) is electrically connected to the open-short-circuit module or the capacitance test module. The test platform (3) is used for placing a product to be tested thereon, and the test platform (3) is connected to the test board (2), such that the product to be tested is electrically connected to the test board (2). The semi-manufactured touch screen testing machine can test an open-short-circuit value of an ITO layer in a semi-manufactured touch screen, as well as measure a capacitance of the ITO layer. Since ICs of Atmel Company support at most 32 electrodes in the X direction and 52 electrodes in the Y direction in a semi-manufactured touch screen, the invention is compatible with and can be used for testing semi-manufactured touch screen materials corresponding to various types of ICs, and can also test semi-manufactured touch screen materials having different structures.

Description

Semi-finished touch screen test machine

Technical field

The present invention relates to the field of touch screen technologies, and in particular, to a semi-finished touch screen test machine.

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, 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 method. However, these test methods cannot guarantee that the short-circuit material 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 novel semi-finished touch screen testing machine to solve the problem that the existing semi-finished touch screen testing machine is difficult to effectively detect all short-circuit materials, and the testing machine is difficult 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, comprising a working chassis, a test board and a test platform located on the working chassis, wherein the working chassis is internally provided with a short circuit test module and a capacitance test module, the test board and the test board The short circuit test module is electrically connected or the test board is electrically connected to the capacitance test module, the test platform is configured to place a product to be tested, and the test platform is docked with the test board, so that the test is to be tested. The product is electrically connected to the test board.

Further, the short circuit test module and/or the capacitor test module are provided with an IC, The IC is an IC of Atmel Corporation. Preferably, the IC is an Atmel MXT1664 series IC.

Further, the semi-finished touch screen testing machine further includes a connection switch disposed on the test board, the connection switch includes a first connection end as a common end, a second connection end as a normally open end, and a third as a normally closed end a connection end, wherein the first connection end is electrically connected to the test board, the second connection end is electrically connected to the short circuit test module, and the third connection end is electrically connected to the capacitance test module connection.

Further, the 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, the first lifting device is in the a vertical projection on the working chassis is located at the interface between the test platform and the test board, and when the first lifting device is lowered to the interface between the test platform and the test board, the first test device is placed on the test platform The product to be tested is electrically connected to the test board.

Further, the first lifting device includes a first cylinder fixed on the first support frame and a first pressure plate connected to the first cylinder, and the first pressure plate is located on the first support frame Lower and moving relative to the first support frame, the first cylinder pushes the first pressure plate down to the docking point of the test platform and the test board, so that the first test panel is placed on the test platform The test product is electrically connected to the test board.

Further, the first lifting device further includes a first guiding post, the first guiding column vertically passes through the first supporting frame and the first guiding post is fixedly connected with the first pressing plate, so that The first pressure plate moves up and down in a vertical direction.

Further, the semi-finished touch screen testing machine further includes a second lifting device disposed above the working chassis and a second lifting device moving up and down relative to the second supporting frame, the second lifting device being a vertical projection on the working chassis is located at the connection switch, and when the second lifting device is lowered to the connection switch, electrically connecting the test board and the short-circuit test module, the second lifting device The test board is electrically connected to the capacitance test module when rising away from the connection switch.

Further, the second lifting device includes a second cylinder fixed to the second support frame and a second pressure plate connected to the second cylinder, and the second pressure plate is located at the second support frame Lower and opposite to the second support frame, the first connection end of the connection switch is connected to the second connection when the second cylinder pushes the second pressure plate down to the connection switch The end is turned on, and the first connecting end is disconnected from the third connecting end to make the test board and the The short-circuit test module is electrically connected, and when the second lifting device rises away from the connection switch, the first connection end of the connection switch is electrically connected to the third connection end, and the first connection is The end is disconnected from the second connection end to electrically connect the test board to the capacitance test module.

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 is fixedly connected with the second pressing plate, so that The second pressure plate moves up and down in a vertical direction.

Further, the first support frame is further provided with a CCD alignment device, and the CCD alignment device is configured to enlarge and align the electrical connection position of the product to be tested and the test board.

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.

Further, the semi-finished touch screen testing machine further includes a display screen disposed above the working cabinet, the display screen is electrically connected to the CCD aligning device, and the display screen is used for displaying the CCD alignment The electrically connected position of the product to be tested and the test board is enlarged, so that the adjustment knob adjusts the electrical connection position of the product to be tested and the test board.

Optionally, the semi-finished touch screen tester is used to test that the size of the semi-finished touch screen is less than or equal to 7 inches. For example, the semi-finished touch screen tester is used to test the size of a semi-finished touch screen of 7 inches, 6 inches, 5.5 inches, 5 inches, 4.5 inches, 4 inches, 3.8 inches or 3.5 inches.

Optionally, the semi-finished touch screen tester is used to test a semi-finished touch screen of GFF, GF1 or 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, because Atmel's IC 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, and can also test different structures. Semi-finished touch screen.

DRAWINGS

In order to more clearly illustrate the technical solution in the embodiment of the present invention, the following will be required in the embodiment. The drawings to be used are briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and those skilled in the art can also use these without any creative work. The drawings obtain other figures.

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

2 is a schematic structural view of a semi-finished touch screen testing machine 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.

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, including a working chassis, a test board and a test platform located on the working chassis, and the working chassis is internally provided with a short circuit test module and a capacitance test module, and the test board and the test board Determining that the short circuit test module is electrically connected or the test board is electrically connected to the capacitance test module, the test platform is configured to place a product to be tested, and the test platform is docked with the test board to make the The test product 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, including a working chassis 1 and test boards 2 , a test platform 3 , and a first support frame 41 respectively disposed at different positions on the working chassis 1 . The first lifting device 51, the second support frame 42, and the second lifting device 52.

The inside of the working case 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 IC, such as an MXT1664 series IC, which is used to drive a short circuit. The test module performs a short-circuit test on the semi-finished touch screen, and the drive capacitance test module performs a capacitance test on the semi-finished touch screen. Using Atmel's highly compatible IC, 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. Testing different structures Semi-finished touch screen.

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 semi-finished touch screen testing machine of this embodiment further includes a connection switch 6 provided on the test board 2, the connection switch 6 including a first connection end as a common end, a second connection end as a normally open end, and a third connection as a normally closed end The first connection end is electrically connected to the test board 2, the second connection end 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 support frame 41 for providing 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, 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 connection switch 6, in particular at the second connection end and the third connection end of the connection 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 down to the connection switch 6, the first connection end of the connection switch 6 is electrically connected to the second connection end, and the first connection end is disconnected from the third connection end. In order to electrically connect 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 connection switch 6, the first connection end of the connection switch 6 is electrically connected to the third connection end, and the first connection is The end is disconnected from the second connection end to electrically connect the test board 2 to the capacitance test module.

The semi-finished touch screen testing machine of this embodiment further includes a CCD alignment device 7 disposed on the first support frame 41, and the CCD alignment device 7 is used for amplifying and aligning the electrical connection position of the product to be tested and the test board 2. To ensure that the electrical connection position of the two is accurate.

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

In addition, the semi-finished touch screen testing machine of the embodiment further includes a display screen (not shown) disposed above the working chassis 1 , and the display screen is electrically connected to the CCD alignment device 7 for displaying after being enlarged by the CCD alignment device. The electrical connection position of the product to be tested and the test board (specifically, the connection position of the electrode lead of the product to be tested and the gold finger in the test board 2), so that the adjustment knob can be conveniently according to the image on the display screen. The position of the electrode lead of the product to be tested and the gold finger of the test board 2 are adjusted to ensure that the electrode lead and the gold finger reliably overlap.

In this embodiment, the semi-finished touch screen tester is used to test that the size of the semi-finished touch screen is less than or equal to 7 inches. For example, a semi-finished touch screen tester is used to test the size of a semi-finished touch screen 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 semi-finished touch screen tester of the present embodiment is used to test a semi-finished touch screen of GFF, GF1 or GF2 structure.

When the semi-finished touch screen tester of the embodiment is in operation, the product to be tested is first placed 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; then the first lifting device 51 is used. The pressure plate 512 is lowered to the interface between the product to be tested and the test board 2 to be electrically connected, so that the product to be tested is electrically connected to the test board 2, and one end of the connection switch 6 is electrically connected to the test board 2; The second lifting device 52 lowers the second pressure plate 522 to a position close to the connection switch 6 so that the other end of the connection switch 6 is electrically connected to the short-circuit test module, thereby electrically connecting the product to be tested and the short-circuit test module. The connection is made to realize the short-circuit test of the product to be tested; finally, the second pressure plate 522 is raised by the second lifting device 52, and the second pressure plate 522 is moved away from the connection switch 6 so that the other end of the connection switch 6 and the capacitance test module are electrically connected. The connection is made, thereby electrically connecting the product to be tested and the capacitance test module to realize the capacitance test of the product to be tested.

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 testing the product to be tested When the test result is acceptable, 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 (such as the red LED light) is located on the working chassis. ) Lights up, at this time the first pressure plate 512 does not automatically lift, and the reset button needs to be operated to lift the first pressure plate 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 the test result and data are displayed through the display of the computer.

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, comprising: a working chassis, a test board and a test platform on the working chassis, wherein the working chassis is provided with a short circuit test module and a capacitance test module, and the test board and the test board Determining that the short circuit test module is electrically connected or the test board is electrically connected to the capacitance test module, the test platform is configured to place a product to be tested, and the test platform is docked with the test board to make the The test product is electrically connected to the test board.
The 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 semi-finished touch screen testing machine according to claim 1, wherein the semi-finished touch screen testing machine further comprises a connection switch disposed on the test board, the connection switch comprising a first connection end as a common end, as a common a second connecting end that is open at the beginning and a third connecting end that is a normally closed end, wherein the first connecting end is electrically connected to the test board, and the second connecting end is electrically connected to the short-circuit test module. The third connection end is electrically connected to the capacitance test module.
The semi-finished touch screen testing machine according to any one of claims 1 to 3, wherein the semi-finished touch screen testing machine further comprises a first support frame disposed above the work case and opposite to the first support a first lifting device that moves up and down, 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 the testing platform When the test board is docked, the product to be tested placed on the test platform is electrically connected to the test board.
The 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 a first pressure plate connected to the first cylinder The first 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 of the test platform and the test board. At the time, the product to be tested placed on the test platform is electrically connected to the test board.
The 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 The guide post is fixedly coupled to the first pressure plate to move the first pressure plate up and down in a vertical direction.
The semi-finished touch screen testing machine according to claim 4, wherein the 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 connection switch, and when the second lifting device is lowered to the connection switch, The test board is electrically connected to the short-circuit test module, and when the second lifting device rises away from the connection switch, the test board is electrically connected to the capacitance test module.
The 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 a second pressure plate connected to the second cylinder The second pressure plate is located below the second support frame and moves up and down relative to the second support frame, and when the second cylinder pushes the second pressure plate down to the connection switch, the connection switch The first connection end 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 is electrically connected to the short-circuit test module. When the second cylinder pulls the second pressure plate to rise away from the connection switch, the first connection end of the connection switch is electrically connected to the third connection end, and the first connection end is The second connection end is disconnected, and the test board is electrically connected to the capacitance test module.
The semi-finished touch screen testing machine according to claim 1, wherein the semi-finished touch screen testing machine is used to test that the size of the semi-finished touch screen is less than or equal to 7 inches.
The semi-finished touch screen testing machine according to claim 1, wherein the semi-finished touch screen testing machine is used for testing a semi-finished touch screen of a GFF, GF1 or GF2 structure.