CURVATURE RADIUS MEASURER, ELECTRONIC DEVICE AND MANUFACTURING METHOD FOR CURVATURE RADIUS MEASURER

摘要

A curvature radius measurer (100), an electronic device and a manufacturing method for the curvature radius measurer (100). The curvature radius measurer (100) is adhered to a required panel (200); when the panel (200) is pressed, the panel (200) can be bent and deformed, and strain sensing resistors (R1, R2, R3, R4) are deformed therewith, thus causing a change of an electrical property of a curvature radius measurement circuit (20), wherein the electrical property is only related to the curvature radius (r) of the panel (200); and the corresponding electric signal is obtained by means of the curvature radius measurement circuit (20), that is, the curvature radius (r) of the panel (200) at a pressed position can be accurately detected. The curvature radius measurer (100) can be easily manufactured and fitted, thereby avoiding the situation of inconvenient usage caused due to the need to place a measured member on an existing optical measurement instrument, can prevent interference caused by different glue adhesive conditions, and has the characteristics of good stability and good repeatability. When the curvature radius (r) of the panel (200) is far greater than the thickness of a substrate (10), the detection is reliable, the substrate (10) can minimally reach 0.1 mm, and in a micro-deformation situation, the curvature radius (r) of the panel (200) is generally greater than 1000 mm. The curvature radius measurer (100) is applicable to detecting a micro-deformation.