A detection probe

Abstract

This utility model discloses a detection probe, belonging to the field of flat panel display panel testing technology. It addresses the technical problems in existing technologies where the rear contact end of the probe connects to the flexible circuit board, and occasional impacts or vibrations can lead to poor contact between the probe's rear contact end and the flexible circuit board, affecting the test results. It also addresses the increased cost associated with using two positioning elements to fix the probe. The detection probe of this utility model includes a base, positioning elements, and a probe unit. The positioning elements are disposed on the base, and the probe unit includes multiple independent blade-type probes. The blade-type probes cooperate with the positioning elements, and a PCB board is connected to the base. The PCB board has conductive holes. Each blade-type probe includes a front contact end and a rear contact end, with the rear contact end cooperating with the conductive holes. This design prevents the blade-type probes from detaching due to impact or vibration, solving the problem of poor contact. Furthermore, only one positioning element is needed to fix the probe unit with the PCB board, saving costs.

Description

Technical Field

[0001] This utility model relates to the field of flat panel display panel testing technology, and more specifically, to a testing probe. Background Technology

[0002] OLED (Organic Light-Emitting Diode) mobile panels are display panels used in mobile devices such as smartphones and tablets. Their manufacturing process involves multiple stages, including TFT backplane preparation, organic material deposition, encapsulation, and module assembly. Due to the self-emissive, high-contrast, and flexible characteristics of OLEDs, their testing requirements are more stringent than those of traditional LCDs, especially in areas such as pixel uniformity, color accuracy, touch functionality, and circuit connection reliability. Light-On Test is the final critical testing stage in the OLED module manufacturing process. It involves powering on the screen to detect display defects (such as bright spots, dark spots, and uneven murmurs), touch functionality, and the integrity of driver IC signals. Probe Testing is one of the core technologies of Light-On Test, directly impacting testing efficiency and yield.

[0003] In the production process of flat panel display devices such as OLEDs, the flat panel display panels used in the flat panel display devices need to undergo quality inspection first. Only after all the inspection results are good can the flat panel display panels be assembled into flat panel display devices. During the inspection of the flat panel display panels, the panel circuit on the flat panel display panel is electrically connected to a probe unit. The probe unit is connected to a driver IC, and then the power and control signals from the driver IC are transmitted to the panel circuit of the flat panel display panel to light up the flat panel display panel for quality inspection.

[0004] For example, Chinese Patent Publication No. CN218767058U, filed on October 28, 2022, entitled "A Blade-Type Probe for Semiconductor Original Board, Probe Unit and Detection Probe," discloses a blade-type probe, including a positioning part. The positioning part includes a first side and a second side, which are arranged opposite to each other. It also includes a first end and a second end, which are perpendicular to the first side and respectively disposed at both ends of the first side. The first end extends into a first extension portion towards the first side, and the second side extends outward into a second extension portion. The first extension portion includes a positioning head disposed at the end, and a contact head with a width smaller than the positioning head is disposed on the positioning head. The second extension portion includes a second extension end and a second contact end connected together, with the second contact end connected to a flexible circuit board. The probe provided by this invention connects to the flexible circuit board by relying on the probe's elasticity for contact. However, occasional impacts or vibrations can cause poor contact between the probe's rear end and the flexible circuit board, affecting the detection results. Furthermore, the use of two positioning components to fix the probe increases costs. Utility Model Content

[0005] 1. Technical problem to be solved by the utility model

[0006] In existing technologies, the connection between the probe's rear end and the flexible circuit board relies on the probe's elasticity for contact. However, occasional impacts or vibrations can lead to poor contact between the probe's rear end and the flexible circuit board, affecting the detection results. Furthermore, the use of two positioning elements to fix the probe increases costs. This application provides a detection probe in which the rear contact end of a blade-type probe connects to a conductive hole on the PCB board, preventing the probe from detaching due to impact or vibration, thus solving the problem of poor contact. Simultaneously, only one positioning element is needed to cooperate with the PCB board to fix the probe unit, saving costs.

[0007] 2. Technical Solution

[0008] To achieve the above objectives, the technical solution provided by this utility model is as follows:

[0009] A detection probe includes a base, a positioning element, and a probe unit. The positioning element is disposed on the base, and the probe unit includes multiple independent blade-type probes. The blade-type probes cooperate with the positioning element. A PCB board is connected to the base, and conductive holes are provided on the PCB board. The blade-type probes include a front contact end and a rear contact end, and the rear contact end cooperates with the conductive holes.

[0010] Furthermore, there are at least two front contact ends.

[0011] Furthermore, the blade-type probe includes a positioning part, which extends towards end A to form a front contact end. The front contact end includes a first contact end and a second contact end. The first contact end is connected to the positioning part through a first extension end and a first extension portion. The second contact end is connected to the positioning part through a second extension end and a second extension portion. The positioning part extends towards end B to form a rear contact end, which is a third contact end. The third contact end is connected to the positioning part through a third extension end and a third extension portion.

[0012] Preferably, a positioning head is provided between the second extension end and the second contact end, the middle part of the positioning head is connected to the second extension end, and one end of the positioning head is connected to the second contact end.

[0013] Furthermore, the lengths of the third extensions of the multiple independent blade-type probes in the probe unit may be the same or different.

[0014] Furthermore, the positioning part extends into a fourth extension at end A. A gap is provided between the first extension and the second extension, and a gap is provided between the second extension and the fourth extension. The second extension contains a perforated strip in the same direction as the extension direction.

[0015] Furthermore, the first and second contact ends are oriented in direction C, and the third contact end is oriented in direction D.

[0016] Furthermore, the third contact end is disposed on the third extension end, and its width is smaller than that of the third extension end, forming an acute angle at the connection point with the third extension end.

[0017] Preferably, the top end of the third contact end is arc-shaped, while the top ends of the first and second contact ends are flat.

[0018] Furthermore, the PCB board is provided with multiple conductive holes along the arrangement direction of the blade probes, and the multiple conductive holes correspond to the positions of the rear contact ends on the blade probes.

[0019] Furthermore, a clamping part is provided on the base, which works in conjunction with the PCB board to clamp the blade probe.

[0020] Furthermore, the base is provided with multiple threaded holes, and the positioning component, PCB board and clamping part are all threadedly connected to the corresponding threaded holes of the base by bolts.

[0021] 3. Beneficial effects

[0022] Compared with existing known technologies, the technical solution provided by this utility model has the following significant advantages:

[0023] (1) The present invention provides a detection probe in which the rear contact end of a blade-type probe with conductive holes is provided on a PCB board and engages with the conductive holes. In the prior art, the elastic contact of the probe's rear end with the circuit of a flexible circuit board can lead to probe misalignment or poor conductivity due to the FPC. By replacing the flexible circuit board with a PCB board, the PCB makes contact with the rear contact end of the probe. The conductive holes (VIA HOLE) on the PCB board used to connect the upper and lower layer circuits are used to contact and fix the probe, which can prevent the probe from detaching due to impact or vibration, and also prevent the probe from falling out of the positioning component. The conductive holes on the PCB board are used to achieve probe contact and fixation. In addition, compared with the existing structure, it can also prevent poor contact caused by the insertion of foreign objects.

[0024] (2) The detection probe provided by this utility model has at least two front contact ends. In the prior art, probes only have one contact end that contacts the panel circuit. When foreign objects are present on the probe, poor current conduction occurs, making the detection process unstable and reducing the probe's conductivity. This application changes the number of front contact ends between the blade-type probe and the panel from one to two, thereby enhancing the probe's elasticity and conductivity. Because the number of front contact ends has increased from one to two or more, if one contact end is not properly pressed against the panel, or if foreign objects are present in one contact end causing poor conductivity, the other contact ends can reinforce and improve the existing problems. This makes the probe's conductivity more stable, optimizing the probe's performance.

[0025] (3) The present invention provides a detection probe in which the lengths of the third extensions of multiple independent blade probes in the probe unit are the same or different. Multiple blade probes with identical structures have high consistency and are easy to maintain; the combination of blade probes with different structures can make better contact with conductive holes, adapt to the needs of different scenarios, and adapt to complex interfaces.

[0026] (4) The present invention provides a detection probe, the base of which is provided with a clamping part, which cooperates with the PCB board to clamp the blade-type probe. In the prior art, two positioning parts are provided for better probe fixation, while the detection probe of this application has only one positioning part, and an accessory clamping part is added to the PCB board. The clamping part cooperates with the PCB board to further fix the probe. In terms of manufacturing cost, the PCB accessory is cheaper than the positioning part, saving costs. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0028] Figure 2 This is an exploded view of the overall structure of this utility model;

[0029] Figure 3 This is a partial side sectional view of the structure of this utility model;

[0030] Figure 4 This is a side view of the third blade-type probe of this utility model;

[0031] Figure 5 This is a side view of the first blade-type probe of this utility model;

[0032] Figure 6 This is a side view of the second blade-type probe of this utility model;

[0033] Figure 7 This is a side view of the fourth blade-type probe of this utility model;

[0034] Figure 8 This is a top view of the probe unit of this utility model.

[0035] Explanation of the labels in the diagram:

[0036] 1. Base;

[0037] 2. Positioning components;

[0038] 3. Blade-type probe; 31. Positioning part; 311. Hole; 312. Open circular hole; 313. First side; 314. Second side; 315. Third side; 316. Fourth side; 317. First end; 318. Second end; 32. First extension; 321. First extension end; 322. First contact end; 33. Second extension; 331. Second extension end; 332. Positioning head; 333. Second contact end; 334. Perforated strip; 34. Third extension; 341. Third extension end; 342. Third contact end; 35. Fourth extension;

[0039] 4. PCB board; 41. Conductive via;

[0040] 5. Pressing part;

[0041] 6. Bolts;

[0042] 7. Connectors. Detailed Implementation

[0043] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0044] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0045] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0046] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0047] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0048] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0049] Example

[0050] One type of detection probe in this embodiment, such as Figure 1 , Figure 2 and Figure 3As shown, it includes a base 1, a positioning element 2, and a probe unit. The positioning element 2 is disposed on the base 1, and the probe unit includes multiple independent blade probes 3. A PCB board 4 is connected to the base 1, and a conductive hole 41 is provided on the PCB board 4. The blade probe 3 includes a front contact end and a rear contact end. The blade probe 3 cooperates with the positioning element 2, and the rear contact end cooperates with the conductive hole 41.

[0051] In this embodiment, the rear contact end cooperates with the conductive hole 41 on the PCB board 4, replacing the flexible circuit board with the PCB board 4. The PCB board 4 then contacts the rear contact end of the blade probe 3. The conductive hole 41 on the PCB board, used for connecting upper and lower layer circuits, contacts and secures the blade probe 3, preventing it from detaching due to impact or vibration, and also preventing it from falling out of the positioning member 2. This solves the technical problem in the prior art where the probe and flexible circuit board rely on the probe's elasticity for contact, leading to poor contact between the probe's rear end and the flexible circuit board due to occasional impacts or vibrations. Furthermore, compared to existing structures, it also prevents poor contact caused by foreign object insertion, resulting in more accurate detection results.

[0052] from Figure 4 Looking at the position of the blade probe 3, direction A is to the left, direction B is to the right, direction C is upward, and direction D is downward. The blade probe 3 includes a positioning part 31, which extends towards end A to form a front contact end. In this embodiment, there are two front contact ends, including a first contact end 322 and a second contact end 333. The first contact end 322 is connected to the positioning part 31 through a first extension end 321 and a first extension part 32. The second contact end 333 is connected to the positioning part 31 through a second extension end 331 and a second extension part 33. The positioning part 31 extends towards end B to form a rear contact end, which is a third contact end 342. The third contact end 342 is connected to the positioning part 31 through a third extension end 341 and a third extension part 34. It should be noted that if space permits, three or four front contact ends can be provided. In this embodiment, two front contact ends are the optimal implementation.

[0053] The front contact end of the blade-type probe 3 contacts the panel circuit. The number of front contact ends has changed from one to two (first contact end 322 and second contact end 333), thereby enhancing the probe's elasticity and conductivity. Because the number of contacts has increased from one to two, if the first contact end 322 is not properly pressed against the panel circuit, or if foreign objects are present in the first contact end 322 causing poor conductivity, the second contact end 333 can reinforce and improve the existing problems in the first contact end 322. This makes the probe's conductivity more stable, optimizing its performance.

[0054] In this embodiment, the positioning part 31 includes a first side 313, a second side 314, a third side 315, and a fourth side 316. The first side 313 is disposed opposite to the second side 314 and the fourth side 316. The third side 315 connects the second side 314 and the fourth side 316. The angle between the third side 315 and the second side 314 is greater than 90 degrees, and the angle between the third side 315 and the fourth side 316 is greater than 90 degrees. The positioning part 31 also includes a first end 317 and a second end 318. The first end 317 and the second end 318 are perpendicular to the first side 313 and are respectively disposed at both ends of the first side 313. The first end 317 extends into a first extension 32 and a second extension 33, and the second end 318 extends into a third extension 34.

[0055] A positioning head 332 is provided between the second extension end 331 and the second contact end 333. The middle part of the positioning head 332 is connected to the second extension end 331, and one end of the positioning head 332 is connected to the second contact end 333.

[0056] The first contact end 322 and the second contact end 333 face direction C, while the third contact end 342 faces direction D. Regardless of which side applies pressure to the contact end of the blade probe 3, the other side also applies the same pressure, so that the contact ends on both sides fit tightly together.

[0057] The third contact end 342 is disposed on the third extension end 341, and its width is smaller than that of the third extension end 341, forming an acute angle at the connection point with the third extension end 341. This makes the third contact end 342 fit more tightly and securely with the conductive hole 41.

[0058] The top of the third contact end 342 is arc-shaped, while the tops of the first contact end 322 and the second contact end 333 are flat.

[0059] The positioning part 31 extends to end A to form a fourth extension part 35. There is a gap between the first extension part 32 and the second extension part 33, and a gap between the second extension part 33 and the fourth extension part 35. The second extension part 33 contains a perforated strip 334 in the same direction as the extension direction.

[0060] The positioning part 31 also includes at least one hole 311, which can reduce the weight of the entire probe.

[0061] An open circular hole 312 is provided at the connection between the positioning part 31 and the second extension part 33 and the fourth extension part 35.

[0062] like Figure 1 , Figures 4-7As shown, the lengths of the third extensions 34 of multiple independent blade probes 3 in the probe unit are the same or different. Therefore, the probe unit is either the same blade probe 3 or a combination of different blade probes 3. In this embodiment, the blade probe 3 has four different structures depending on the length of the third extension 34. The length of the third extension 34 of the blade probe 3 is less than the length of the first side 313 to the fourth side 316, which is the first blade probe ( Figure 5 The length of the third extension 34 of the blade probe 3 is equal to the length from the first side 313 to the fourth side 316, which is the length of the second blade probe. Figure 6 The length of the third extension 34 of the blade probe 3 is greater than the length of the first side 313 to the fourth side 316, and it is the third and fourth blade probes. Figure 4 , Figure 7 A gap is provided between the third extension 34 and the positioning part 31, and the length of the gap is inversely proportional to the length of the third extension 34, making the blade probe 3 more stable.

[0063] like Figure 8 As shown, the PCB board 4 has multiple conductive holes 41 arranged along the direction of the blade probes 3, and the multiple conductive holes 41 correspond to the positions of the rear contact ends on the blade probes 3. The PCB board 4 is rectangular, with a rectangular notch on one long side, and the PCB board 4 is U-shaped when viewed from above.

[0064] In this embodiment, four different blade probes 3 are combined into one unit, and several combinations form a probe unit. The probe unit composed of the four different blade probes 3 is embedded in the conductive holes 41 on the PCB board 4, and the conductive holes 41 are arranged in a combination.

[0065] One type of detection probe in this embodiment, such as Figure 1 and Figure 2 As shown, a clamping part 5 is provided on the base 1, which cooperates with the PCB board 4 to clamp the blade probe 3. Specifically, the middle protrusion of the clamping part 5 is embedded in the notch of the PCB board 4, and the two ends of the clamping part 5 are set on the two ends of the PCB board 4, pressing against the third side 315 and the third extension 34 to fix the blade probe 3. In the prior art detection probe, two positioning parts 2 are provided for better fixation of the probe. This embodiment only has one positioning part 2, and an accessory clamping part 5 is added to the PCB for further fixing the blade probe 3. In terms of manufacturing cost, the accessory on the PCB is cheaper than the positioning part 2, saving costs.

[0066] In this embodiment, the base 1 is provided with multiple threaded holes, and the positioning member 2, the PCB board 4, and the clamping part 5 are all threadedly connected to the corresponding threaded holes of the base 1 by bolts 6. Specifically, the bolts 6 are threadedly connected to the threaded holes corresponding to the base 1 and the positioning member 2, the threaded holes corresponding to the base 1 and the PCB board 4, and the threaded holes corresponding to the base 1 and the clamping part 5, respectively.

[0067] The present invention provides a detection probe, wherein a connector 7 is provided on a PCB board 4 for circuit connection.

[0068] The present invention and its embodiments have been described above illustratively. This description is not restrictive, and the figures shown are only one embodiment of the present invention; the actual structure is not limited thereto. Therefore, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A detection probe, comprising a base (1), a positioning element (2), and a probe unit, wherein the positioning element (2) is disposed on the base (1), and the probe unit comprises a plurality of independent blade-type probes (3); characterized in that, The blade probe (3) is engaged with the positioning component (2), and a PCB board (4) is connected to the base (1). A conductive hole (41) is provided on the PCB board (4). The blade probe (3) includes a front contact end and a rear contact end, and the rear contact end is engaged with the conductive hole (41).

2. The detection probe according to claim 1, characterized in that, There are at least two front contact ends.

3. A detection probe according to claim 2, characterized in that, The blade probe (3) includes a positioning part (31), which extends a front contact end toward end A. The front contact end includes a first contact end (322) and a second contact end (333). The first contact end (322) is connected to the positioning part (31) through a first extension end (321) and a first extension part (32). The second contact end (333) is connected to the positioning part (31) through a second extension end (331) and a second extension part (33). The positioning part (31) extends a rear contact end toward end B. The rear contact end is a third contact end (342), which is connected to the positioning part (31) through a third extension end (341) and a third extension part (34).

4. A detection probe according to claim 3, characterized in that, The lengths of the third extensions (34) of the multiple independent blade probes (3) in the probe unit may be the same or different.

5. A detection probe according to claim 3, characterized in that, The positioning part (31) extends to end A and extends to the fourth extension part (35). There is a gap between the first extension part (32) and the second extension part (33). There is a gap between the second extension part (33) and the fourth extension part (35). The second extension part (33) contains a perforated strip (334) in the same direction as the extension direction.

6. A detection probe according to claim 3, characterized in that, The first contact end (322) and the second contact end (333) face the C direction, and the third contact end (342) faces the D direction, wherein the C direction and the D direction are opposite.

7. A detection probe according to claim 3, characterized in that, The third contact end (342) is disposed on the third extension end (341) and its width is smaller than that of the third extension end (341), and the connection point with the third extension end (341) forms an acute angle.

8. A detection probe according to claim 1, characterized in that, The PCB board (4) has multiple conductive holes (41) arranged along the arrangement direction of the blade probes (3), and the multiple conductive holes (41) correspond to the positions of the rear contact ends on the blade probes (3).

9. A detection probe according to claim 1, characterized in that, The base (1) is provided with a clamping part (5), which works with the PCB board (4) to clamp the blade probe (3).

10. A detection probe according to claim 9, characterized in that, The base (1) is provided with multiple threaded holes, and the positioning part (2), PCB board (4) and clamping part (5) are all threadedly connected to the corresponding threaded holes of the base (1) by bolts (6).

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