Under-screen fingerprint tester

Abstract

The invention discloses an under-screen fingerprint tester, and relates to the field of fingerprint testers. The under-screen fingerprint tester comprises a test board, and a mobile phone tray and a pressure control mechanism are arranged on the top of the test board. According to the invention, a design mode of combining a spherical surface and an equal-height section is adopted, the structure can float in a translation direction in a movement process, and when the structure reaches a working position, the structure can float in a rotation direction through point contact between the spherical surface and a plane, so that the influence of inclination caused by processing and assembling errors on a test is greatly reduced, and the debugging time is reduced; meanwhile, the structure is simple, the manufacturing cost is reduced, the module is more compact, the under-screen fingerprint test efficiency is higher and more accurate, and the product is more competitive; and control over the pressing pressure of a low-friction air cylinder is rapidly and stably completed by changing the magnitude of an input signal, multiple sets of low-friction air cylinders can be controlled at the same time, and the operation is simple, convenient and efficient.

Description

technical field [0001] The invention relates to the technical field of fingerprint testers, in particular to an under-screen fingerprint tester. Background technique [0002] The traditional floating method is mainly divided into two types. One is to use the gap between the two parts to avoid the two parts from being stuck during the movement. Constrained, it can only float in the direction of translation; another ball-type floating method combines the inner spherical surface with the outer spherical surface so that the two can rotate freely, but this method is completely restricted in the translation direction, and the structure is bloated. Manufacturing high cost; [0003] The traditional pressure control method is to control the pressure through the weight of the weight. It is often difficult to estimate the weight of the required weight at the initial design stage. During debugging, it is necessary to repeatedly add and subtract weights to achieve the required pressure....

AI Technical Summary

Problems solved by technology

[0002] The traditional floating method is mainly divided into two types. One is to use the gap between the two parts to avoid the two parts from being stuck during the movement. Constrained, it can only float in the direction of translation; another ball-type floating method combines the inner spherical surface with the outer spherical surface, so that the two can rotate freely, but this method is completely restricted in the translation direction, and the structure is bloated. Manufacturing high cost;

[0003] The traditional pressure control method is to control the pressure through the weight of the weight. It is often difficult to estimate the weight of the required weight at the initial stage of design. During debugging, it is necessary to repeatedly add and subtract weights to achieve the required pressure. When the pressure requirement is high or the number of tests is small Over time, the weight of the entire module will increase;

[0004] When the model of the test mobile phone is different, it is necessary to replace a new USB cable, which is costly and takes up space in the warehouse

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