Signal generator and test equipment

Abstract

The utility model discloses a signal generator and test equipment, and belongs to the technical field of photoelectric detection. The signal generator comprises a box body, a circuit board assembly and a power supply assembly. The circuit board assembly comprises a production board, a plurality of impedance boards, a plurality of signal output boards, a signal bottom board and a switching back board, the signal bottom board is arranged at the bottom in the box body in the Z direction, the impedance boards, the signal output boards and the switching back board are arranged in parallel and are vertically inserted into the signal bottom board, and at least part of the impedance boards and at least part of the signal output boards are arranged side by side in the Y direction; the production board is parallel to the signal bottom board and is inserted into the switching back board; the power supply assembly is located in the box body. According to the signal generator provided by the embodiment of the utility model, the structure between the circuit boards is more compact, the space occupied by the circuit boards is reduced, the circuit boards can be conveniently debugged and maintained, and the signal input boards with corresponding types and corresponding numbers can be installed according to test requirements, thereby satisfying different test environments.

Description

A signal generator and testing equipment Technical Field

[0001] This utility model belongs to the field of photoelectric detection technology, specifically relating to a signal generator and testing equipment. Background Technology

[0002] In the display panel manufacturing industry, it is essential to perform screen testing on display panels using LED testing equipment. This screen testing stage is crucial for controlling the quality of display panels, as it detects any dead pixels, such as bright or dark pixels. A signal generator (PG) is the signal source used for screen testing of display panels.

[0003] However, existing signal generators contain multiple circuit boards, which are scattered and occupy a large volume. Furthermore, the fixed structure of each circuit board makes debugging and maintenance difficult, and it cannot provide different test signals, thus failing to flexibly meet users' personalized needs. Summary of the Invention

[0004] In view of the above-mentioned defects or improvement needs of the existing technology, this utility model provides a signal generator and testing equipment. Its purpose is not only to make the circuit boards such as protection boards, signal boards and signal baseboards compact and neatly arranged in the cabinet with low volume occupancy, but also to allow for the selection and insertion of corresponding signal boards as needed, flexibly meeting the user's personalized needs.

[0005] To achieve the above objectives, in a first aspect, the present invention provides a signal generator, which includes a housing, a circuit board assembly, and a power supply assembly;

[0006] The circuit board assembly includes a production board, multiple impedance boards, multiple signal output boards, a signal baseboard, and an adapter backplane. The production board is used to provide EL signals to the product under test. The impedance boards are used to test the impedance of the signal channel pins. The signal output boards are used to provide the product under test with the image signals required by the product.

[0007] The signal base plate is disposed at the bottom of the housing along the Z direction. The impedance plate, the signal output plate, and the adapter back plate are arranged in parallel and vertically inserted into the signal base plate. At least a portion of the impedance plate and at least a portion of the signal output plate are arranged side by side along the Y direction. The production plate is parallel to the signal base plate and inserted into the adapter back plate.

[0008] The power supply component is located inside the enclosure and is used to supply power to the circuit board assembly.

[0009] Optionally, the plurality of impedance boards and the plurality of signal output boards are arranged in two columns and respectively located on both sides of the production board.

[0010] Optionally, the power supply assembly includes a power supply and a bracket. The bracket is fixed inside the housing and has a U-shaped structure. The power supply is inserted into the bracket and is electrically connected to the adapter backplate.

[0011] Optionally, the adapter backplate is fixed to the outer wall of the bracket.

[0012] Optionally, the housing has multiple first slide rails, each first slide rail being used to insert an impedance board or a signal output board.

[0013] Optionally, the housing has a second slide rail for inserting the production board.

[0014] Optionally, the number of production boards is two, the two production boards are stacked along the Z direction, and each production board has a heat sink.

[0015] Optionally, multiple cooling fans are provided on each of the two sides of the enclosure, with the cooling fans on each side arranged in parallel and the airflow direction of the cooling fans on both sides being the same.

[0016] Optionally, the circuit board assembly further includes a starter board and a core board. The starter board is mounted in parallel on the core board and is electrically connected to the core board. The core board is installed inside the housing and is electrically connected to the signal base plate.

[0017] Secondly, this utility model provides a testing device, which includes a signal generator as described in the first aspect.

[0018] The aforementioned improved technical features can be combined with each other as long as they do not conflict with each other.

[0019] In summary, the beneficial effects of the above-described technical solutions conceived by this utility model compared with the prior art include:

[0020] (1) For a signal generator of the present invention, the structure between the circuit boards is more compact, which reduces the space occupied by the circuit boards, and also makes it easier to debug and repair the circuit boards. Furthermore, the corresponding type and number of signal input boards can be installed according to the test requirements to meet different test environments and flexibly meet the personalized needs of users.

[0021] (2) For a signal generator of the present invention, the power supply component includes a power supply and a bracket. The bracket is fixed inside the box and has a U-shaped structure. The power supply is inserted into the bracket and electrically connected to the adapter backplate. The adapter backplate is fixed on the outer wall of the power supply bracket. Thus, the power supply and the adapter backplate can be integrated through the bracket, thereby realizing the modular installation of the modular power supply and the adapter backplate and improving the installation efficiency.

[0022] (3) In the signal generator of this utility model, multiple impedance boards and multiple signal output boards are arranged on both sides of the production board. The multiple impedance boards and multiple signal output boards are arranged in a row along the Y direction, and the multiple impedance boards and multiple signal output boards are arranged in another row along the Y direction. By arranging the multiple impedance boards and multiple signal output boards in two rows, the circuit board assembly can be made more compact, avoiding the problem of the overall size increasing due to the multiple circuit boards being too long in the Y direction. In addition, the two-row arrangement can also realize the synchronous testing of two display panels.

[0023] (4) For a signal generator of this utility model, the housing includes a cover plate, a bottom plate, and multiple side plates. The cover plate, bottom plate, and multiple side plates form a cavity. The circuit board assembly is located in the cavity. Multiple through holes are arranged at intervals on one side plate. Signal output ports are provided on the signal bottom plate and each production plate. Each signal output port is inserted into the corresponding through hole, thereby realizing the external output of the signal through the signal output port. At this time, all the signal output ports of the whole machine are placed on a single side plate, making the whole machine neater and better meeting the needs of testing and external wiring. In addition, the left and right side plates are connected by reinforcing ribs to increase the stability of the arrangement of the left and right side plates. Preferably, all the signal output ports of the whole machine are placed on the front side plate, making the whole machine neater and better meeting the needs of testing and external wiring.

[0024] (5) For a signal generator of this utility model, there are 6 cooling fans, divided into 2 groups, of which 3 cooling fans are connected in parallel to make the internal wiring simpler. At the same time, the cooling fans are distributed on the left and right sides of the whole machine, and the air intake on the left and the exhaust on the right are adopted to meet the internal heat dissipation requirements.

[0025] (6) For a signal generator of the present invention, the starter plate is mounted in parallel to the core plate and is electrically connected to the core plate. The core plate is mounted in parallel to the signal base plate and is electrically connected to the signal base plate. The signal generated by the starter plate is transmitted to the signal base plate through the core plate. Attached Figure Description

[0026] Figure 1 is a schematic diagram of a signal generator provided in an embodiment of the present invention;

[0027] Figure 2 is an exploded view of a signal generator provided in an embodiment of the present invention;

[0028] Figure 3 is a schematic diagram of the internal structure of the box provided in an embodiment of the present utility model;

[0029] Figure 4 is a structural schematic diagram of the power supply component provided in an embodiment of the present utility model;

[0030] Figure 5 is a top view of the internal structure of the box provided in an embodiment of this utility model.

[0031] In all the accompanying drawings, the same reference numerals denote the same technical features, specifically:

[0032] 1. Enclosure; 11. First bracket; 111. First slide rail; 12. Second bracket; 121. Second slide rail; 13. Limiting block; 14. Cover plate; 15. Base plate; 16. Side plate; 161. Through hole; 162. Reinforcing rib plate; 17. Signal output port; 18. Cooling fan; 2. Circuit board assembly; 21. Production board; 22. Impedance board; 23. Signal output board; 24. Signal base plate; 25. Adapter backplate; 26. Start-up board; 27. Core board; 3. Power supply assembly; 31. Power supply; 32. Bracket. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining the present utility model and are not intended to limit the present utility model. Furthermore, the technical features involved in the various embodiments of the present utility model described below can be combined with each other as long as they do not conflict with each other.

[0034] 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.

[0035] 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.

[0036] 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.

[0037] 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.

[0038] Example:

[0039] Figure 1 is a structural schematic diagram of a signal generator provided in an embodiment of the present invention. Figure 2 is an exploded view of a signal generator provided in an embodiment of the present invention. Figure 3 is a structural schematic diagram of the interior of the housing 1 provided in an embodiment of the present invention. As shown in Figures 1-3, the signal generator includes a housing 1, a circuit board assembly 2, and a power supply assembly 3.

[0040] The circuit board assembly 2 includes a production board 21, multiple impedance boards 22, multiple signal output boards 23, a signal baseboard 24, and an adapter backplane 25. The production board is used to provide EL signals to the product under test, the impedance boards are used to test the impedance of the signal channel pins, and the signal output boards are used to provide the product under test with the type of image signal required by the product.

[0041] The signal base plate 24 is located at the bottom of the housing 1 along the Z direction. The impedance plate 22, signal output plate 23, and adapter back plate 25 are arranged in parallel and vertically inserted into the signal base plate 24. At least some of the impedance plates 22 and at least some of the signal output plates 23 are arranged side by side along the Y direction. The production plate 21 is parallel to the signal base plate 24 and is inserted into the adapter back plate 25.

[0042] The power supply component 3 is located inside the housing 1 and is used to supply power to the circuit board assembly 2.

[0043] In the signal generator provided by this embodiment, since the impedance board 22, signal output board 23, and adapter backplate 25 are vertically inserted into the signal base plate 24, and the production board 21 is inserted into the adapter backplate 25, signal transmission between the production board 21, multiple impedance boards 22, multiple signal output boards 23, signal base plate 24, and adapter backplate 25 can be realized. Furthermore, when different test signals are required for different display panels, the corresponding type or number of signal output boards 23 can be inserted and removed, thus flexibly meeting the user's personalized needs. When debugging or maintenance is required, the production board 21, impedance board 22, and adapter backplate 25 can be replaced by inserting and removing them, greatly improving convenience.

[0044] Furthermore, the impedance board 22, signal output board 23, and adapter backplane 25 are arranged in parallel, the production board 21 is parallel to the signal base plate 24, and at least some of the impedance boards 22 and at least some of the signal output boards 23 are arranged side by side along the Y direction. Thus, the parallel and side-by-side arrangement makes the structure between the circuit boards more compact and greatly reduces the space occupied by the circuit boards.

[0045] In other words, the signal generator provided by this utility model has a more compact structure between the circuit boards, which reduces the space occupied by the circuit boards, and also facilitates the debugging and maintenance of the circuit boards. Furthermore, it can install corresponding types and quantities of signal input boards according to test needs to meet different test environments.

[0046] For example, production board 21 can generate ELVDD or ELVSS signals to provide high-level and low-level power supply signals to the display panel. Signal output board 23 can generate RGB, TTL, EDP, MIPI-Cphy, or MIPI-Dphy signals, etc., and the appropriate type and number of signal output boards 23 can be set as needed. Impedance board 22 can test the impedance of signal channel pins, while adapter backplane 25 and signal baseboard 24 mainly serve the function of signal transmission, thus ultimately providing test signals to the display panel through the cooperation of the above multiple circuit boards.

[0047] For example, the number of impedance boards 22 can be 4, and the number of signal output boards 23 can be 14.

[0048] In addition, there are two production boards 21, which are stacked along the Z direction and each production board 21 has a heat sink to dissipate heat.

[0049] For example, both the impedance board 22 and the signal output board 23 have heat sinks.

[0050] In one implementation of this invention, multiple impedance boards 22 and multiple signal output boards 23 are arranged in two columns, respectively positioned on both sides of the production board 21. By arranging the multiple impedance boards 22 and multiple signal output boards 23 in two columns, the circuit board assembly 2 can be made more compact, avoiding the problem of increased overall size caused by multiple circuit boards being too long in the Y direction. In addition, the two-column arrangement can also enable synchronous testing of the two display panels.

[0051] Specifically, a first circuit board group is arranged sequentially along the Y-axis in a column on the left side of the production board 21. The first circuit board group includes multiple impedance boards 22 and multiple signal output boards 23, for example, including 2 impedance boards 22 and 7 signal output boards 23. A second circuit board group is arranged sequentially along the Y-axis in a column on the right side of the production board 21. The second circuit board group also includes multiple impedance boards 22 and multiple signal output boards 23, for example, including 2 impedance boards 22 and 7 signal output boards 23.

[0052] Figure 4 is a structural schematic diagram of the power supply component provided in this embodiment of the present invention. Referring to Figures 3 and 4, the power supply component 3 includes a power supply 31 and a bracket 32. The bracket 32 ​​is fixed inside the housing 1 and has a U-shaped structure. The power supply 31 is inserted into the bracket 32 ​​and is electrically connected to the adapter backplate 25. The power supply 31 provides power and transmits the voltage through the adapter backplate 25 to the signal base plate 24, impedance plate 22, and signal output plate 23.

[0053] For example, the bracket 32 ​​is fixed inside the housing 1 by screws.

[0054] Furthermore, the adapter backplate 25 is fixed to the outer wall of the bracket 32, thereby enabling stable support for the vertically arranged adapter backplate 25 through the bracket 32, ensuring reliable insertion of the production board 21.

[0055] It is easy to understand that the power supply 31 and the adapter backplane 25 can be integrated through the bracket 32, thereby realizing the modular installation of the power supply 31 and the adapter backplane 25 and improving installation efficiency.

[0056] In this embodiment, the housing has multiple first slide rails, each of which is used to insert an impedance board or a signal output board.

[0057] Specifically, the housing 1 has two spaced-apart first supports 11 located on both sides of the production board 21. Each first support 11 is equipped with multiple spaced-apart first slide rails 111 along the Y direction and extending along the Z direction. Each impedance board 22 and each signal output board 23 are inserted into the corresponding first slide rail 111. The first supports 11 provide mounting bases for the multiple first slide rails 111, allowing for easy insertion and replacement of the impedance boards 22 and signal output boards 23.

[0058] Furthermore, the housing has a second slide rail for inserting the production plate.

[0059] Specifically, the housing 1 has two parallel and spaced-apart second supports 12 located between two first supports 11. Each second support 12 is provided with a second slide rail 121 extending along the Y direction, and both sides of the production plate 21 are inserted into the corresponding second slide rail 121. The second supports 12 provide mounting bases for the multiple second slide rails 121, allowing the production plate 21 to be easily inserted.

[0060] It should be noted that the second bracket 12 is also provided with a first slide rail 111, so that both sides of the impedance plate 22 and the signal output plate 23 can be supported by the corresponding first slide rail 111, ensuring the stability of the arrangement of the impedance plate 22 and the signal output plate 23.

[0061] In one embodiment of this utility model, both the first bracket 11 and the second bracket 12 are provided with protruding limiting blocks 13. The limiting blocks 13 are used to restrict the multiple impedance plates 22 and multiple signal output plates 23 from sliding out of the first slide rail 111, thereby preventing the impedance plates 22 and signal output plates 23 from detaching from the bracket.

[0062] Referring to Figures 2 and 3, the housing 1 includes a cover plate 14, a bottom plate 15, and multiple side plates 16. The cover plate 14, bottom plate 15, and multiple side plates 16 form a cavity, in which the circuit board assembly 2 is located. Multiple through holes 161 are provided on one side plate 16. Signal output ports 17 are provided on the signal base plate 24 and each production board 21. Each signal output port 17 is inserted into the corresponding through hole 161, thereby realizing the external output of signals through the signal output port 17. At this time, all the signal output ports 17 of the whole machine are placed on a single side plate 16, making the whole machine neater and better meeting the needs of testing and external wiring.

[0063] For example, there are four side plates 16. A through hole 161 is located on the front side plate, which is provided with a handle. The other three side plates 16 are fixedly connected to the base plate 15 to form a whole. The signal base plate 24 and the bracket 32 ​​are both fixed on the base plate 15.

[0064] To increase the stability of the arrangement of the left and right side plates 16, the left and right side plates 16 are connected by a reinforcing rib plate 162 (see Figure 5). Furthermore, the first bracket 11 and the second bracket 12 are both connected to the reinforcing rib plate 162 by copper studs, thereby making the entire structure more stable and reliable.

[0065] In addition, multiple cooling fans are installed on both sides of the enclosure, with each fan arranged in parallel and the airflow direction of the fans on both sides being the same.

[0066] Specifically, multiple ventilation openings are provided on both opposite sides of the enclosure 1, and multiple cooling fans 18 are provided inside the enclosure 1. Each cooling fan 18 is arranged facing the corresponding ventilation opening, and the air blowing direction of each cooling fan 18 and the axis of the corresponding ventilation opening are arranged along the X direction, so that air is blown through the ventilation opening and the cooling fan 18, thereby achieving rapid cooling of the circuit board.

[0067] For example, there can be 6 cooling fans, divided into 2 groups, with 3 cooling fans in one group and wired together to simplify the internal wiring. At the same time, the cooling fans are distributed on the left and right sides of the whole machine, adopting a left-in and right-out airflow method to meet the internal heat dissipation requirements.

[0068] Correspondingly, the number of power supplies 31 can be 3, of which 2 power supplies 31 are used to power the fan and the other power supply 31 is used to power the circuit board assembly 2.

[0069] In this embodiment, the circuit board assembly 2 further includes a starter board 26 and a core board 27. The starter board 26 is mounted parallel to the core board 27 and is electrically connected to the core board 27. The core board 27 is installed inside the housing 1 and is electrically connected to the signal base plate 24. The signal generated by the starter board 26 is transmitted to the signal base plate 24 through the core board 27.

[0070] For example, the starter board 26 is equipped with a chip for running programs and starting the core board 27, which in turn is used for writing programs and controlling other circuit boards. The core board 27 is fixed to the base plate 15.

[0071] This utility model embodiment also provides a testing device, which includes a signal generator as described above.

[0072] Those skilled in the art will readily understand that the above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A signal generator, characterized in that, The signal generator includes a housing, a circuit board assembly, and a power supply assembly. The circuit board assembly includes a production board, multiple impedance boards, multiple signal output boards, a signal base plate, and an adapter backplane. The production board provides an EL signal to the product under test (DUT). The impedance boards are used to test the impedance of the signal channel pins. The signal output boards provide the DUT with the required type of image signal. The signal base plate is located at the bottom of the housing along the Z-direction. The impedance boards, signal output boards, and adapter backplane are arranged in parallel and perpendicularly inserted into the signal base plate. At least some of the impedance boards and at least some of the signal output boards are arranged side-by-side along the Y-direction. The production board is parallel to the signal base plate and inserted into the adapter backplane. The power supply assembly is located inside the housing and is used to power the circuit board assembly.

2. The signal generator according to claim 1, characterized in that, The impedance boards and signal output boards are arranged in two columns and are respectively located on both sides of the production board.

3. A signal generator according to claim 1, characterized in that, The power supply assembly includes a power supply and a bracket. The bracket is fixed inside the housing and has a U-shaped structure. The power supply is inserted into the bracket and is electrically connected to the adapter backplate.

4. A signal generator according to claim 3, characterized in that, The adapter backplate is fixed to the outer wall of the bracket.

5. A signal generator according to claim 2, characterized in that, The enclosure contains multiple first slide rails, each of which is used to insert an impedance board or a signal output board.

6. A signal generator according to claim 5, characterized in that, The housing has a second slide rail for inserting the production board.

7. A signal generator according to claim 1, characterized in that, The production board consists of two boards, which are stacked along the Z-direction, and each board has a heat sink.

8. A signal generator according to claim 1, characterized in that, Multiple cooling fans are installed on both sides of the enclosure, with each cooling fan arranged in parallel and the airflow direction of the cooling fans on both sides being the same.

9. A signal generator according to claim 1, characterized in that, The circuit board assembly also includes a starter board and a core board. The starter board is mounted in parallel on the core board and is electrically connected to the core board. The core board is installed inside the housing and is electrically connected to the signal base plate.

10. A testing device, characterized in that, The testing equipment includes a signal generator as described in any one of claims 1-9.

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