A system and method for improving lubrication in a fluid dynamic bearing are disclosed. The method includes: obtaining user inputted literal contents and a font identifier of a user selected personalized font; invoking a personalized font configuration file corresponding to the font identifier according to the font identifier; synthesizing the personalized font configuration file and the literal contents into a session message and displaying the session message in real time. Left and right brackets configured and arranged to be secured to a window casement and support a left and right ends of the shade roller assembly are included. An annular recess may be formed in the connecting member adjacent to either or both of the end portions that are secured to the driveshaft tube sections.