A test fixture applied to a micro display array layout module

Abstract

This utility model discloses a test fixture for micro-display array layout modules, including a fixture base plate, a PCB signal board, a pin mold mounting base, a pin mold mounting assembly, and a top cover plate. The pin mold mounting bases are used to mount several pin molds, which are installed below the pin mold mounting assembly. The PCB signal board is positioned between the pin mold mounting bases and the pin mold mounting assembly. The top cover plate is installed above the pin mold mounting assembly and is rotatably connected to the fixture base plate on at least one side, allowing it to flip and press the pin mold mounting assembly so that the pin molds on the mounting bases press against the micro-display array layout module under test on the fixture base plate for testing. This utility model is used for the overall testing of micro-display array layout modules before layout and cutting. It can simultaneously measure multiple array layout modules and can also directly measure array wafers before bonding module wiring. It offers high testing efficiency and meets the needs of mass production, laboratory, and other application testing scenarios.

Description

Technical Field

[0001] This utility model belongs to the field of screen testing technology, and in particular relates to a test fixture for micro-display array layout modules. Background Technology

[0002] Microdisplays refer to high-resolution display devices with a diagonal size typically less than 1 inch, used in compact, high-performance display systems. Microdisplay devices are increasingly used in virtual reality, augmented reality, smart homes, and intelligent transportation. In virtual reality, microdisplays are a key component, with their resolution and refresh rate directly impacting the realism and user experience. They are also used in AR glasses and electronic glasses to enhance reality. In intelligent transportation, microdisplays can be used in in-vehicle displays to provide drivers with clearer and safer navigation information, such as HUDs (Head-Up Displays). The military field also has significant applications, such as in gun sights.

[0003] Widespread application demands force display panel manufacturers to possess corresponding production capabilities. Through continuous testing and verification, engineers have developed a layout method that maximizes the number of elements in a single array. By utilizing the same space, time, environment, and process, they maximize production capacity in one go. To address the issue of uncontrollable abnormalities in subsequent cutting and fabrication, module wiring is bonded directly on the array layout before being cut into individual pieces, and then tested. During the testing process, good or defective products are directly determined. In subsequent cutting, defective products are skipped, and only good products are cut.

[0004] Currently, there are only test fixtures for single-pcs modules on the market, and no test fixtures for micro-display array layout modules (an array layout consists of N single-pcs panels), which cannot meet the needs of mass production inspection and urgently needs to be solved. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a test fixture for micro-display array layout modules. This fixture is used for overall testing of micro-display array layout modules before layout and cutting. It can simultaneously measure multiple array layout modules, has high testing efficiency, and meets the needs of mass production, laboratory and other application testing scenarios.

[0006] To achieve the above objectives, this utility model is implemented using the following solution:

[0007] This utility model provides a test fixture for micro-display array layout modules, including a fixture base plate, a PCB signal board, a pin mold mounting base, a pin mold mounting assembly, and a top cover plate. The pin mold mounting base is used to mount a plurality of pin molds, and the plurality of pin mold mounting bases are installed below the pin mold mounting assembly. The PCB signal board is disposed between the pin mold mounting base and the pin mold mounting assembly. The top cover plate is installed above the pin mold mounting assembly and is rotatably connected to the fixture base plate on at least one side, so that it can be flipped to press the pin mold mounting assembly so that the pin molds on the pin mold mounting base press against the micro-display array layout module to be tested on the fixture base plate for testing.

[0008] Optionally, it also includes a tray, which is detachably mounted on the base plate of the fixture and located below the needle mold mounting base, on which the micro display array layout module to be tested is placed.

[0009] Optionally, it also includes a first pallet limiting block and a second pallet limiting block, which are fixed on the base plate of the fixture and are used to limit the left, right and rear directions of the pallet mounted on the base plate of the fixture, respectively.

[0010] Optionally, it also includes a limiting pin, which is fixed on the side of the upper cover plate facing the pin mold mounting base, for limiting the pin mold mounting base, PCB signal board and pin mold mounting base.

[0011] Optionally, it also includes a guide fixing post and a directional buffer spring, which are fixedly mounted on the base plate of the fixture to guide the needle mold mounting base, the PCB signal board and the needle mold mounting assembly to move up and down.

[0012] Optionally, it also includes a height fixing block, which is fixed to the base plate of the fixture and is used to limit the downward pressure height of the pin mold mounting base, the PCB signal board and the pin mold mounting assembly.

[0013] Optionally, it also includes a top cover plate fixing seat, a latch fixing seat, and a latch. The top cover plate fixing seat and the latch fixing seat are fixed on the base plate of the fixture. One side of the top cover plate is hinged to the top cover plate fixing seat, and the latch is hinged to the latch fixing seat for locking the other side of the top cover plate.

[0014] Optionally, it also includes a bump that is mounted on the side of the upper cover facing the needle mold mounting base and protrudes downward.

[0015] Optionally, it also includes a slot formed on the top cover plate.

[0016] Optionally, it also includes handles and feet, with the handles fixed to both sides of the fixture base plate and the feet fixed to the bottom surface of the fixture base plate. Beneficial effects

[0017] This invention utilizes a plurality of needle molds mounted on several needle mold mounting seats under a needle mold mounting base and a flip-press fixture base plate to test the micro-display array layout module. It is used for the overall testing of the micro-display array layout module before layout and cutting. It can simultaneously measure multiple array layout modules, and can also directly measure the array wafer before the module is bonded and laid out. It has high testing efficiency and meets the needs of mass production, laboratory and other application testing scenarios. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of a test fixture for a micro-display array typesetting module provided in this embodiment of the utility model;

[0019] Figure 2 This is a partial structural schematic diagram of a test fixture for a micro-display array typesetting module provided in an embodiment of this utility model;

[0020] Figure 3 This is a partial structural schematic diagram of a test fixture for a micro-display array typesetting module provided in an embodiment of this utility model;

[0021] In the diagram: 1. Foot; 2. Handle; 3. Fixture base plate; 4. Top cover plate; 5. Lock; 6. PCB signal board; 7. Protrusion; 8. Slot; 9. Needle mold mounting base; 10. Needle mold mounting main base; 11. Tray; 12. Lock fixing base; 13. First tray limit block; 14. Second tray limit block; 15. Top cover plate fixing base; 16. Guide fixing post; 17. Orientation buffer spring; 18. Height fixing block; 19. Limiting pin. Detailed Implementation

[0022] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of this utility model, and should not be used to limit the protection scope of this utility model.

[0023] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0024] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Example 1

[0025] like Figures 1 to 3 As shown, this embodiment provides a test fixture for a micro-display array layout module, comprising a fixture base plate 3, a PCB signal board 6, a pin mold mounting base 9, a pin mold mounting assembly 10, and an upper cover plate 4. The pin mold mounting base 9 is used to mount a plurality of pin molds, and the plurality of pin mold mounting bases 9 are installed below the pin mold mounting assembly 10. The PCB signal board 6 is disposed between the pin mold mounting base 9 and the pin mold mounting assembly 10. The upper cover plate 4 is installed above the pin mold mounting assembly 10, and at least one side of it is rotatably connected to the fixture base plate 3 so that it can flip and press the pin mold mounting assembly 10 so that the pin molds on the pin mold mounting base 9 press against the micro-display array layout module to be tested on the fixture base plate 3 for testing. This test fixture, applied to micro-display array layout modules, uses a number of pin molds mounted on pin mold mounting seats 9 under a pin mold mounting base 10 and an upper cover plate 4 to flip and press the micro-display array layout module to be tested on the fixture base plate 3. It is used for overall testing of micro-display array layout modules before layout and cutting. It can simultaneously measure multiple array layout modules, and can also directly measure array wafers before the module wiring is bonded. It has high testing efficiency and meets the needs of mass production, laboratory and other application testing scenarios. Example 2

[0026] like Figures 1 to 3 As shown, this embodiment provides a test fixture for a micro-display array layout module, comprising a fixture base plate 3, a PCB signal board 6, a pin mold mounting base 9, a pin mold mounting assembly 10, and a top cover plate 4. The pin mold mounting base 9 is used to mount several pin molds, and three pin mold mounting bases 9 are installed below the pin mold mounting assembly 10 (Note: Figure 3The diagram shows the state where the needle mold mounting base 9, PCB signal board 6, and needle mold mounting assembly 10 move downwards together to the top of the fixture base plate 3 (this should not be interpreted as the needle mold mounting base 9 being mounted on the fixture base plate 3). The PCB signal board 6 is positioned between the needle mold mounting base 9 and the needle mold mounting assembly 10. The upper cover plate 4 is mounted above the needle mold mounting assembly 10, and at least one side of it is rotatably connected to the fixture base plate 3 so that it can be flipped to press the needle mold mounting assembly 10, allowing the needle mold on the needle mold mounting base 9 to press against the micro-display array layout module to be tested on the fixture base plate 3 for testing.

[0027] Specifically, based on the layout of the microdisplay array module to be tested by the customer, a corresponding number of pin molds are installed on the pin mold mounting base 9. If a pin mold is damaged during testing, it can be replaced quickly and easily without damaging the product. Three pin mold mounting bases 9 are fixedly installed below the pin mold mounting main base 10. The PCB signal board 6 is positioned between the pin mold mounting bases 9 and the pin mold mounting main base 10. The three are positioned by limiting pins 19 (Note: the limiting pins 19 are fixed to the side of the upper cover plate 4 facing the pin mold mounting main base 10). Figure 3 The diagram shows the state where the limiting pin 19 falls above the fixture base plate 3 as the upper cover plate 4 is pressed down, limiting the pin mold mounting base 9 and the PCB signal board 6 pin mold mounting assembly 10. (This should not be interpreted as the limiting pin 19 being mounted on the fixture base plate 3.) Two guide fixing posts 16 are fixedly installed on each of the left and right sides of the fixture base plate 3. A directional buffer spring 17 is fixedly installed between the two guide fixing posts on each side of the fixture base plate 3. A height fixing block 18 is fixedly installed on each of the left and right sides of the fixture base plate 3. The pin mold mounting assembly 10 is mounted on the fixture base plate 3 via the guide fixing posts 16 and the directional buffer spring 17 and moves up and down. During the movement, the height fixing block 18 limits the downward pressing distance. A first tray limiting block 13 is fixed on each of the left and right sides of the fixture base plate 3, and a second tray limiting block 14 is fixed on the rear side of the fixture base plate 3. The micro display array layout module to be tested is placed on the tray 11. The tray 11 is detachably installed on the fixture base plate 3 and is located below the needle mold mounting seat 9. The tray 11 is limited to the left, right and rear by the first tray limiting block 13 and the second tray limiting block 14. Two upper cover plate fixing seats 15 are fixed on the rear side of the fixture base plate 3, and two locking fixing seats 12 are fixed on the front side of the fixture base plate 3, corresponding to the upper cover plate fixing seats 15. One side of the upper cover plate 4 is hinged to the upper cover plate fixing seat 15, and a locking buckle 5 is hinged to the locking fixing seat 12 for locking the other side of the upper cover plate 4. Several protrusions 7 are installed on the side of the upper cover plate 4 facing the needle mold mounting base 10, protruding downwards. Three slots 8 are opened on the upper cover plate 4, which are directly opposite three needle mold mounting bases 9, for observing the lighting effect of the module. A handle 2 is fixed on the left and right sides of the fixture base plate 3 for moving the test fixture. Four sets of feet 1 are fixed on the bottom surface of the fixture base plate 3 for supporting the test fixture.

[0028] Working principle:

[0029] The test fixture for the micro-display array layout module is moved to the test area using handle 2. The micro-display array layout module to be tested is placed on tray 11. Then, the tray 11 is stably placed into the predetermined position in the test fixture by the left, right and rearward limiting blocks 13 and 14 of the first tray limiting block 13 and the second tray limiting block 14 (to facilitate the smooth pressing of the micro-display array layout module to be tested in the tray 11). After that, the upper cover plate 4 is flipped over, and the protrusion 7 under the upper cover plate 4 contacts the needle mold mounting base 10. At this time, the needle mold mounting base 10 can move up and down. Under the restriction of the height fixing block 18, the pins of the needle mold on the needle mold mounting base 9 press the micro-display array layout module to be tested. The PCB signal board 9 transmits signals from the outside to the pins of the needle mold to test the micro-display array layout module to be tested. At the same time, the latch 5 locks the upper cover plate 6 after pressing to facilitate long-term pressing, thereby meeting the test requirements. During the test, the lighting effect of the micro-display array layout module to be tested can be observed through the position of the slot 11.

[0030] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A test fixture applied to a micro-display array layout module, characterized in that, The fixture includes a base plate, a PCB signal board, a needle mold mounting base, a needle mold mounting assembly, and a top cover. The needle mold mounting base is used to mount several needle molds. Several needle mold mounting bases are installed below the needle mold mounting assembly. The PCB signal board is located between the needle mold mounting base and the needle mold mounting assembly. The top cover is installed above the needle mold mounting assembly. At least one side of the top cover is rotatably connected to the base plate so that it can flip and press the needle mold mounting assembly so that the needle molds on the needle mold mounting base press against the micro-display array layout module to be tested on the base plate for testing.

2. The test fixture for micro-display array layout module according to claim 1, wherein, It also includes a tray, which is detachably mounted on the base plate of the fixture and located below the needle mold mounting base. The micro display array layout module to be tested is placed on the tray.

3. The test fixture for micro-display array layout module according to claim 2, wherein, It also includes a first pallet limiting block and a second pallet limiting block, which are fixed on the base plate of the fixture and are used to limit the left, right and rear directions of the pallets installed on the base plate of the fixture, respectively.

4. The test fixture for micro-display array layout module according to claim 1, wherein, It also includes a limiting pin, which is fixed on the side of the upper cover plate facing the needle mold mounting base, and is used to limit the needle mold mounting base, PCB signal board and needle mold mounting base.

5. The test fixture for micro-display array layout module according to claim 1, wherein, It also includes guide posts and directional buffer springs, which are fixedly mounted on the base plate of the fixture to guide the needle mold mounting base, PCB signal board and needle mold mounting assembly to move up and down.

6. The test fixture for micro-display array layout module according to claim 1, wherein, It also includes a height fixing block, which is fixed on the base plate of the fixture and is used to limit the downward pressure height of the needle mold mounting base, PCB signal board and needle mold mounting assembly.

7. The test fixture for micro-display array layout module according to claim 1, wherein, It also includes a top cover plate fixing seat, a latch fixing seat, and a latch. The top cover plate fixing seat and the latch fixing seat are fixed on the base plate of the fixture. One side of the top cover plate is hinged to the top cover plate fixing seat, and the latch is hinged to the latch fixing seat for locking the other side of the top cover plate.

8. The test fixture for micro-display array layout module according to claim 1, wherein, It also includes a bump, which is mounted on the side of the upper cover plate facing the needle mold mounting base and protrudes downward.

9. The test fixture for micro-display array layout modules according to claim 1, characterized in that, It also includes a slot, which is formed on the top cover plate.

10. The test fixture for micro-display array layout modules according to claim 1, characterized in that, It also includes handles and feet. The handles are fixed to both sides of the base plate of the fixture, and the feet are fixed to the bottom surface of the base plate of the fixture.

Images