Screening method for writing member for touch panel pen, touch panel system, writing member for touch panel pen, touch panel and display device

摘要

Provided are a method for screening a writing member for a touch panel pen capable of efficiently product design and quality control of the writing member. The sorting method of the writable member for touch panel pens which selects the thing which satisfy | fills the following conditions A1-1 as the writable member for touch panel pens. Condition A1-1 The writing member for the touch panel pen while fixing the touch panel pen at an angle of 60 degrees with respect to the surface of the writing member for the touch panel pen, and applying a vertical load of 100 gf to the touch panel pen. The frictional force in the moving direction applied to the touch panel pen when the length of the one-way 40 mm is moved at a speed of 14 mm / sec is measured at 0.001 second intervals, and the average of the frictional force every 0.001 seconds is calculated. Further, after the length of the 40 mm one-way movement of the writing member for the touch panel pen is completed, the vertical load applied to the touch panel pen is maintained at 100 gf, and the touch panel pen is placed on the surface of the writing member for the touch panel pen. Let it be in contact with it at an angle of 60 degrees. In this state, the residual frictional force in the movement direction applied to the touch panel pen is measured at intervals of 0.001 seconds, and the average of the residual frictional forces every 0.001 seconds is calculated. The average of the said dynamic frictional force and the average of the said residual frictional force show the relationship of "0.45 average of residual frictional force / average of dynamic frictional force".