Electric detection jig and electric detection system

Abstract

The utility model discloses an electric detection jig and an electric detection system. The electric detection jig comprises a base with a bearing part, a cover plate and a detection pressure head. The cover plate movably covers the bearing part, the detection pressure head extends along a first direction, and the detection pressure head comprises a first metal probe assembly corresponding to a first position of the bearing part and a second metal probe assembly corresponding to a second position of the bearing part. The first position is different from the second position, the first metal probe assembly and the second metal probe assembly are arranged along a second direction, and the first direction intersects with the second direction. According to the utility model, the detection efficiency is improved, and the burden of operators is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of display device manufacturing, and in particular to an electrical detection fixture and an electrical detection system for detecting a display panel. Background Art

[0002] During the manufacturing process of display panels, electrical testing is required. This includes lighting up the display panel for functional testing using an electrical test fixture, and performing resistance testing on the transparent conductive layer on the outer surface of the display panel using an impedance test fixture. These multiple testing steps consume a lot of testing manpower and are prone to missoperation (MO). Utility Model Content

[0003] The purpose of this utility model is to provide an electrical detection fixture to solve the above problems.

[0004] In order to achieve the above-mentioned purpose, the utility model provides an electrical detection fixture, which includes a base, a cover and a detection pressure head, the base includes a load-bearing part, the cover is pivotally connected to the base so that the cover can movably cover the load-bearing part, the detection pressure head is arranged on the cover so that the detection pressure head can move away from or approach the load-bearing part along with the cover, the detection pressure head extends along a first direction, the detection pressure head includes a first metal probe assembly and a second metal probe assembly, the first metal probe assembly corresponds to the first position of the load-bearing part, the second metal probe assembly corresponds to the second position of the load-bearing part, the first position is different from the second position, the first metal probe assembly and the second metal probe assembly are arranged along the second direction, and the first direction intersects with the second direction.

[0005] As an optional technical solution, one side of the cover is connected to one side of the bearing portion via a pivot, the detection pressure head is connected to the side of the cover connected to the pivot, and the first direction is parallel to the pivot.

[0006] As an optional technical solution, the first metal probe assembly includes a plurality of first probes, and the second metal probe assembly includes a plurality of second probes, wherein the diameters of the plurality of second probes are greater than the diameters of the plurality of first probes.

[0007] As an optional technical solution, the plurality of second probes are divided into a first probe group and a second probe group. In the first direction, the first probe group and the second probe group are respectively adjacent to two opposite sides of the cover plate.

[0008] As an optional technical solution, the base includes a base body, the base body has an inclined mounting surface, and the bearing portion is fixed to the inclined mounting surface.

[0009] As an optional technical solution, the electrical detection fixture further includes a charge coupled device, which is disposed in the accommodating space of the base and adjacent to the carrying portion.

[0010] As an optional technical solution, the cover is further provided with a light source, and when the cover covers the supporting portion, the light source corresponds to the charge coupled device.

[0011] As an optional technical solution, when the cover plate covers the carrying portion, the cover plate and the charge coupled device are located on opposite sides of the carrying portion.

[0012] In addition, the present invention also provides an electrical testing system, which includes the aforementioned electrical testing fixture and a host. The host includes a signal generator, and the signal generator is electrically connected to the first metal probe assembly and the second metal probe assembly of the electrical testing fixture.

[0013] As an optional technical solution, the electrical detection system also includes a prompt component, which is electrically connected to the host. The prompt component is a display component or an audio-visual component. The prompt component is used to issue a prompt signal, which can be a prompt information or audio-visual information displayed on the display component.

[0014] The electrical testing fixture and system of this utility model feature a test head equipped with a first metal probe assembly and a second metal probe assembly. When the cover plate covers the support portion, the first metal probe assembly contacts at least one test pad of the display panel, and the second metal probe assembly electrically contacts the transparent conductive layer. A signal generator then transmits a first electrical signal to the second metal probe assembly and a second electrical signal to the first metal probe assembly to perform impedance testing and electrical image testing. Multiple tests can be completed without changing the test fixture, improving testing efficiency and reducing the burden on operators.

[0015] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments, but they are not intended to limit the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of an embodiment of a display panel applicable to the electrical testing fixture of the present invention.

[0017] Figure 2 This is a schematic diagram of the electrical detection fixture of the present utility model;

[0018] Figure 3 A partial schematic diagram of the electrical detection fixture of the present invention from another perspective;

[0019] Figure 4 A partial schematic diagram of the electrical detection fixture of the present invention;

[0020] Figure 5 This is another partial schematic diagram of the electrical detection fixture of the present invention;

[0021] Figure 6 It is a block diagram of the electrical detection system of the present utility model. DETAILED DESCRIPTION

[0022] In order to provide a further understanding of the purpose, structure, features and functions of the present invention, the present invention is described in detail below with reference to the embodiments.

[0023] The following descriptions of the various embodiments refer to the accompanying drawings to illustrate specific embodiments in which the present invention may be implemented. Directional terms used in this invention, such as "up," "down," "front," "back," "left," "right," and "side," refer only to the directions in the accompanying drawings. Therefore, these directional terms are intended to illustrate and facilitate understanding of the present invention and are not intended to limit the present invention.

[0024] Please refer to Figures 1 to 6 , Figure 1 FIG. 1 is a structural diagram of an embodiment of a display panel to which the electrical detection fixture 100 of the present invention is applicable. Figure 2 This is a schematic diagram of the electrical detection fixture of the present utility model. Figure 3 This is a partial schematic diagram of the electrical detection fixture of the present invention from another perspective. Figure 4 This is a partial schematic diagram of the electrical detection fixture of the present invention. Figure 5 This is another partial schematic diagram of the electrical detection fixture of the present invention. Figure 6 Schematic diagram of a block diagram of an electrical detection system 1000 of the present invention.

[0025] like Figure 1As shown, the display panel 10 has a display area 11 and a peripheral area 12, and the peripheral area 12 surrounds at least one side of the display area 11. The display area 11 has a plurality of gate lines (not shown) extending in one direction and a plurality of data lines (not shown) extending in another direction to form a plurality of pixel units (not shown) distributed in an array. The display area 11 is also provided with a plurality of touch leads (not shown). The peripheral area 12 has a plurality of bonding pads 13, some of which can be connected to a plurality of data lines and a plurality of touch leads. The plurality of bonding pads 13 can be connected to a driver chip, a flexible circuit board, etc. to receive corresponding electrical signals and transmit the corresponding electrical signals to the corresponding data lines, touch leads, etc. The plurality of bonding pads 13 can include at least one test pad, and the at least one test pad can be located on one side or both sides of the plurality of bonding pads 13. In one embodiment, the display panel 10 includes an array substrate, a color filter substrate, and a liquid crystal display layer located therebetween. The outer surface of the color filter substrate (and / or array substrate) is covered with a transparent conductive layer (e.g., ITO, ATO, etc.) in the display area 11 and at least a portion of the peripheral area 12, and the transparent conductive layer does not cover the plurality of solder pads 13. It should be noted that, for ease of description, Figure 1 The shapes and arrangements of the multiple pads 13 are for illustration only.

[0026] The electrical testing fixture 100 and the electrical testing system 1000 of the present invention can perform electrical screen testing and impedance testing on the display panel 10 before the multiple solder pads 13 on the display panel 10 are connected to the driver chip and the flexible circuit board. After confirming that the display panel 10 is normal, subsequent steps such as pressing the driver chip and the flexible circuit board and attaching the polarizer can be carried out.

[0027] like Figures 2 to 5 As shown, the electrical testing fixture 100 includes a base 110, a cover 120, and a testing head 130. The base 110 includes a supporting portion 140. The cover 120 is pivotally connected to the base 110 so that the cover 120 can movably cover the supporting portion 140. The testing head 130 is disposed on the cover 120 so that the testing head 130 can move away from or closer to the supporting portion 140 along with the cover 120. In one embodiment, a side of the cover 120 is connected to a side of the supporting portion 140 via a pivot 121, and the testing head 130 is connected to the side of the cover 120 connected to the pivot 121. The testing head 130 includes a first metal probe assembly 150 and a second metal probe assembly 160. The first metal probe assembly 150 corresponds to a first position of the supporting portion 140, and the second metal probe assembly 160 corresponds to a second position of the supporting portion 140, where the first position and the second position are different. In one embodiment, the electrical testing fixture 10 can be applied to an electrical testing system 1000, such as Figure 6As shown, the electrical testing system 1000 further includes a host 200 . The host 200 includes a signal generator (not shown). The first metal probe assembly 150 and the second metal probe assembly 160 of the electrical testing fixture 10 can be electrically connected to the signal generator.

[0028] To test the display panel 10, the display panel 10 is first placed on the carrier 140. The side of the display panel 10 with the multiple solder pads 13 corresponds to the side where the test head 130 is located. The carrier 140 may have a groove corresponding to the shape of the display panel 10 to limit the position of the display panel 10. The cover 120 is then placed over the carrier 140. The first metal probe assembly 150 of the test head 130 on the cover 120 contacts the at least one test solder pad, and the second metal probe assembly 160 electrically contacts the transparent conductive layer. A first electrical signal is then transmitted to the second metal probe assembly 160 via a signal generator to measure current (or voltage). This signal is then compared with a preset value (presumably stored in the host 200) to confirm whether the impedance value of the transparent conductive layer is normal. If the impedance value of the transparent conductive layer is normal, the signal generator transmits a second electrical signal to the first metal probe assembly 150, which is then transmitted to the display area 11 via the at least one test solder pad to perform image testing on the display panel 10. At this time, the signal generator may no longer transmit the first electrical signal to the second metal probe assembly 160. In one embodiment, the aforementioned electrical detection system 1000 further includes a prompt component 300. When it is confirmed that the impedance value of the transparent conductive layer is abnormal, the host 200 sends a prompt signal to the prompt component 300. The prompt component 300 may be a display component or an audio-visual component, and the prompt signal may be a prompt message or an audio-visual message displayed on the display component. At this time, the detection is completed, and the impedance of the current display panel 10 is determined to be abnormal, and subsequent electrical screen detection is no longer performed to save detection time, that is, the electrical screen detection is performed after the impedance test is passed. In another embodiment, when it is confirmed that the impedance value of the transparent conductive layer is abnormal, the signal generator may continue to transmit the second electrical signal to the first metal probe assembly 150 to perform electrical screen detection. After all the detection is completed, the host 200 will send a relevant prompt signal to prompt the operator of the detection result of the current display panel 10.

[0029] In the electrical testing fixture 100 and electrical testing system 1000 of the present invention, the test head 130 is equipped with a first metal probe assembly 150 and a second metal probe assembly 160. When the cover plate 120 covers the carrier portion 140, the first metal probe assembly 150 contacts at least one test pad of the display panel 10, and the second metal probe assembly 160 electrically contacts the transparent conductive layer. In this case, a signal generator transmits a first electrical signal to the second metal probe assembly 160 and a second electrical signal to the first metal probe assembly 150, respectively, to perform impedance testing and electrical image testing. Multiple tests can be completed without changing the test fixture, improving testing efficiency and reducing the burden on operators.

[0030] In one embodiment, the first metal probe assembly 150 includes a plurality of first probes 151, and the second metal probe assembly 160 includes a plurality of second probes 161. The detection pressure head 130 extends along a first direction F1, which is parallel to the pivot 121, and the plurality of first probes 151 can be arranged along the first direction F1. The first metal probe assembly 150 and the second metal probe assembly 160 are arranged along a second direction F2, which intersects (e.g., is perpendicular to) the first direction F1. The length of each first probe 151 in the first metal probe assembly 150 is the same as the length of each second metal probe assembly 161 in the second metal probe assembly 160, and both are retractable probes to ensure that when the cover plate 120 covers the carrier portion 140, the first metal probe assembly 150 can contact the at least one detection pad and the second metal probe assembly 160 can contact the transparent conductive layer. Furthermore, the diameter of the second probes 161 is larger than that of the first probes 151 . This not only facilitates the production of the second probes 161 , but also increases the contact area between the second probes 161 and the transparent conductive layer.

[0031] In one embodiment, the plurality of second probes 161 are divided into a first probe group A and a second probe group B. Figure 5 One of the probe sets is shown in FIG. In the first direction F1, the first probe set A and the second probe set B are located adjacent to opposite sides of the cover plate 120. During impedance testing, both the first probe set A and the second probe set B contact the transparent conductive layer, forming a circuit. The first probe set A and the second probe set B can receive different potentials. In one embodiment, the first probe set A and the second probe set B contact the transparent conductive layer located in the peripheral region 12 on either side of the display region 11. This ensures that even if the first probe set A and the second probe set B leave marks on the transparent conductive layer during testing, this will not affect the subsequent display of the display panel 10.

[0032] In one embodiment, the base 110 includes a base 111, the base 111 having an inclined mounting surface 112, and the supporting portion 140 is fixed to the inclined mounting surface 112. The electrical testing fixture 100 further includes a charge-coupled device 170, which is disposed in the accommodation space S of the base 111 and adjacent to the supporting portion 140. The supporting portion 140 may be provided with a through hole corresponding to the charge-coupled device 170. When the cover 120 covers the supporting portion 140, the cover 120 and the charge-coupled device 170 are located on opposite sides of the supporting portion 140. Since the charge-coupled device 170 is disposed in the accommodation space S of the base 111, it does not occupy additional space, effectively controlling the size of the electrical testing fixture 100. In one embodiment, a product code (ID) is provided on one edge of the display panel 10 (located within the peripheral region 12). When the display panel 10 is placed on the carrier 140, the through hole provided on the carrier 140 corresponding to the charge-coupled device 170 exposes the product code corresponding to the charge-coupled device 170, allowing the charge-coupled device 170 to read the product code. Furthermore, the cover 120 is also provided with a light source (not shown). When the cover 120 covers the carrier 140, the light source corresponds to the charge-coupled device 170, providing supplemental illumination when the charge-coupled device 170 reads the product code, ensuring that the charge-coupled device 170 accurately reads the product code.

[0033] In one embodiment, when the display panel 10 needs to be tested, the display panel 10 is first placed on the carrier 140, the charge coupled device 170 reads the product code of the display panel 10, and then the signal generator transmits a first electrical signal to the second metal probe assembly 160 to confirm whether the impedance value of the transparent conductive layer is normal. If it is confirmed that the impedance value of the transparent conductive layer is abnormal, the test is stopped, and the product abnormality is prompted and recorded, such as the product code and the corresponding abnormality type (such as impedance abnormality). If it is confirmed that the impedance value of the transparent conductive layer is normal, the signal generator transmits a second electrical signal to the first metal probe assembly 150 to perform screen detection on the display panel 10. If the screen detection is abnormal, the test is stopped, and the product abnormality is recorded, such as the product code and the corresponding abnormality type (such as electrical screen abnormality).

[0034] The electrical testing fixture and system of this utility model feature a test head equipped with a first metal probe assembly and a second metal probe assembly. When the cover plate covers the support portion, the first metal probe assembly contacts at least one test pad of the display panel, and the second metal probe assembly electrically contacts the transparent conductive layer. A signal generator then transmits a first electrical signal to the second metal probe assembly and a second electrical signal to the first metal probe assembly to perform impedance testing and electrical image testing. Multiple tests can be completed without changing the test fixture, improving testing efficiency and reducing the burden on operators.

[0035] Of course, the present invention may have many other embodiments. Without departing from the spirit and essence of the present invention, technicians familiar with the field may make various corresponding changes and modifications based on the present invention, but these corresponding changes and modifications should all fall within the scope of protection of the claims attached to the present invention.

Claims

1. An electrical detection fixture, characterized in that: include: A base, including a bearing portion; A cover plate is pivotally connected to the base so that the cover plate can movably cover the supporting portion; as well as A detection pressure head is provided on the cover plate so that the detection pressure head can move away from or approach the bearing portion along with the cover plate, and the detection pressure head extends along a first direction and includes: a first metal probe assembly corresponding to a first position of the carrying portion; as well as The second metal probe assembly corresponds to a second position of the carrying portion. The first position is different from the second position. The first metal probe assembly and the second metal probe assembly are arranged along a second direction, and the first direction intersects the second direction.

2. The electrical detection fixture according to claim 1, characterized in that: One side of the cover plate is connected to one side of the bearing portion via a pivot, the detection pressure head is connected to the side of the cover plate connected to the pivot, and the first direction is parallel to the pivot.

3. The electrical detection fixture according to claim 1, characterized in that: The first metal probe assembly includes a plurality of first probes, and the second metal probe assembly includes a plurality of second probes. Diameters of the plurality of second probes are larger than diameters of the plurality of first probes.

4. The electrical detection fixture according to claim 3, characterized in that: The plurality of second probes are divided into a first probe group and a second probe group. In the first direction, the first probe group and the second probe group are respectively adjacent to two opposite sides of the cover plate.

5. The electrical detection fixture according to claim 1, characterized in that: The base includes a base body having an inclined mounting surface, and the supporting portion is fixed on the inclined mounting surface.

6. The electrical detection fixture according to claim 5, characterized in that: The electrical detection fixture further includes a charge coupled device (CCD) which is disposed in the accommodating space of the base and adjacent to the carrying portion.

7. The electrical detection fixture according to claim 6, characterized in that: The cover is further provided with a light source, and when the cover covers the carrying portion, the light source corresponds to the charge coupled device.

8. The electrical detection fixture according to claim 6, characterized in that: When the cover plate covers the carrying portion, the cover plate and the charge coupled device are located on two opposite sides of the carrying portion.

9. An electrical detection system, characterized in that Include, The electrical detection jig according to any one of claims 1 to 8; and The host comprises a signal generator, wherein the signal generator is electrically connected to the first metal probe component and the second metal probe component of the electrical detection fixture.

10. The electrical detection system according to claim 9, characterized in that: The electrical detection system also includes a prompt component, which is electrically connected to the host. The prompt component is a display component or an audio-visual component. The prompt component is used to send a prompt signal, and the prompt signal can be a prompt information or audio-visual information displayed on the display component.

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