A flexible thin film circuit board terminal size detection device based on a vision module
By setting light sources on both sides of the flexible thin-film circuit board, the shadows caused by terminals not being on the same plane are eliminated, solving the problem of high false detection rate in the prior art and achieving more accurate terminal spacing detection.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HUIZHOU ZECHENG TECH CO LTD
- Filing Date
- 2025-06-30
- Publication Date
- 2026-06-05
AI Technical Summary
Existing CCD vision inspection modules have a high false detection rate when inspecting the spacing between terminals on flexible thin-film circuit boards because the terminals are not on the same plane, which causes shadows to affect the test results.
A first light source and a second light source are set on both sides of the flexible thin film circuit board. The terminals are illuminated on both sides by a visual inspection device to eliminate the influence of shadows and improve the accuracy of inspection.
This effectively reduced the false test rate of terminal spacing testing and improved the accuracy of the test.
Smart Images

Figure CN224327700U_ABST
Abstract
Claims
1. A device for detecting the terminal dimensions of a flexible thin-film circuit board based on a vision module, characterized in that: The device includes a test platform, a first light source mounted on the test platform, and a product placement plate positioned above the first light source. The product placement plate has a light-transmitting hole corresponding to the first light source, and the shape of the light-transmitting hole is adapted to the shape of the terminals of the flexible thin-film circuit board. A second light source and a visual inspection device are also provided above the light-transmitting hole. The second light source and the visual inspection device are mounted directly above the light-transmitting hole via a bracket. The first light source and the second light source illuminate both sides of the terminals of the flexible thin-film circuit board to be tested, providing a detection light source for the visual inspection device.
2. The flexible thin-film circuit board terminal size detection device based on a vision module according to claim 1, characterized in that: It also includes a pressure plate for fixing the flexible thin-film circuit board, the pressure plate covering the product placement plate.
3. The flexible thin-film circuit board terminal size detection device based on a vision module according to claim 2, characterized in that: The pressure plate is provided with a window, which corresponds to the position of the light-transmitting hole and has a larger area than the light-transmitting hole.
4. The flexible thin-film circuit board terminal size detection device based on a vision module according to claim 3, characterized in that: The product placement plate has a baffle at one end near the light-transmitting hole. When the pressure plate is closed on the product placement plate, one side of the pressure plate abuts against the baffle for aligning the light-transmitting hole with the window.
5. The flexible thin-film circuit board terminal size detection device based on a vision module according to claim 3, characterized in that: One side of the pressure plate is hinged to the product placement plate, and when the pressure plate is closed on the product placement plate, the light-transmitting hole is aligned with the window.
6. The flexible thin-film circuit board terminal size detection device based on a vision module according to claim 1, characterized in that: The bracket is provided with a slide rail, and the slide rail is provided with a first fixed frame and a second fixed frame that can slide along the slide rail. The second light source is set on the first fixed frame, and the visual inspection device is set on the second fixed frame. The bracket is also provided with an adjustment structure for adjusting the position of the first fixed frame and the second fixed frame on the slide rail. The visual inspection device and the second light source can adjust their height from the terminal to be tested through the adjustment structure.
7. The flexible thin-film circuit board terminal size detection device based on a vision module according to any one of claims 1-6, characterized in that: The test bench is also equipped with two parallel guide rails, the bracket is set at one end of the guide rails, the guide rails are equipped with sliders, and the product placement plate is fixed on the sliders.
8. The flexible thin-film circuit board terminal size detection device based on a vision module according to claim 7, characterized in that: The product placement plate is also equipped with a handle that drives the product placement plate to slide on the guide rail.
9. The flexible thin-film circuit board terminal size detection device based on a vision module according to claim 7, characterized in that: The test bench is also equipped with a limiting structure that limits the sliding stroke of the product placement plate.
10. The flexible thin-film circuit board terminal size detection device based on a vision module according to any one of claims 1-6, characterized in that: The distance between the terminals of the flexible thin-film circuit board to be tested and the first light source is 20-40mm, and the distance between the terminals of the flexible thin-film circuit board to be tested and the second light source is 5-15mm.