Screen sounding device, sounding display screen, manufacturing method thereof, and screen sounding system

Abstract

The invention provides an ultrasonic generator, a screen sounding device, a sounding display screen, a manufacturing method thereof and a screen sounding system. The screen sounding device comprises asubstrate, a lower electrode layer, an ultrasonic generating unit array and an upper electrode layer arranged in order from bottom to top, wherein the substrate is used for providing support for thescreen sounding device; the lower electrode layer is disposed on the upper surface of the substrate and includes a lower electrode for supplying the working voltage of each ultrasonic generating unitin the ultrasonic generating unit array. The ultrasonic generating unit array is arranged above the low electrode layer and includes a plurality of ultrasonic generating unit arranged according to a preset ultrasonic pattern; the upper electrode lay is disposed above thet ultrasonic generating cell array and includes an upper electrode for supplying an operating voltage of each ultrasonic generating unit in the ultrasonic generating unit array. Thus, the space occupation of the sound producing device is reduced, the sound producing device is convenient to be integrated with the display panel,and directional sound producing can be realized.

Description

technical field [0001] The invention relates to a technology for generating a sound field and an image display technology, in particular to an ultrasonic generator, a screen sound generating device, a sound emitting display screen, a manufacturing method thereof, and a screen sound generating system. Background technique [0002] The ultra-thin, narrow bezel, and even full-screen designs of display devices leave less and less space for sound-generating devices. However, the traditional sound generating device has a large volume and its installation position is limited, so it is difficult to have a suitable position and space in the new generation of display devices. Therefore, it is necessary to redesign the sound generating device that can adapt to the requirements of the current display device. Moreover, most of the current sound generating devices are based on silicon-based MEMS (Micro-Electro-Mechanical System, Micro-Electro-Mechanical System) structural technology, whi...

AI Technical Summary

Problems solved by technology

However, the liquid crystal panel has a complex structure and is not a flexible material, so it cannot effectively restore the sound vibration and cannot be used for vibration sound

[0005] In addition, the working principle of this type of screen generating device is to use a traditional exciter attached to the back of the screen to drive the entire display panel to vibrate. Therefore, high power is required and the device is relatively large in size, so it is not suitable for mobile terminals, such as mobile phones, tablets, etc. battery operated and for small size devices

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