Development of Direct-Vibration Actuator for Bezel-Less Display Panels on Mobile Phones

Applied Sciences

Sang-Moon Hwang¹  Ki-Hong Park¹  Yuan-Wu Jiang¹  Zhi-Xiong Jiang¹ 

[1] School of Mechanical Engineering, Pusan National University, Busan 46241, Korea;

关键词: actuator;    bezel-less display;    direct-vibration actuator;    structure design;   

DOI  :  10.3390/app10144975

来源: DOAJ

【 摘 要 】

With the development of technology, multimedia devices such as smartphones, tablets, and wearable devices have become necessities in our lives, and many new products are introduced every year. Companies are expanding smartphone displays and are developing bezel-less display panel designs. The enlarged display limits the space available for a speaker, and a new actuator must therefore be developed. Indirect-vibration actuators were developed for full-wide display designs. Using the same sound-generation principle as that of the indirect-vibration actuator, the mechanism and design of the direct-vibrating actuator is proposed in this paper. Using 3D finite element method (FEM), the force factor is obtained and used for design optimization. A sample is produced, and an experiment is conducted for sound pressure level (SPL) comparison. The experiment results show that the newly designed direct-vibration actuator can replace the dynamic receiver in mobile devices and enable the application of the bezel-less display design.

【 授权许可】

Unknown