Industrial Technology Research Institute

National Taiwan University

You-Chia Chang

Ding-Zheng Lin

Jyi-Tyan Yeh

Chih-Hao Chen

Chih-Kung Lee

Shur-Fen Liu

Dar-Ming Chiang

Chun-Hsiang Wen

Yaw-Ting Wu

Tsung-Dar Cheng

Jyh-Long Jeng

Chun-Ti Chen

Chin-Kai Chang

Chau-Shioung Yeh

A transparent speaker is suitable for being disposed on a display panel. The transparent speaker includes a transparent membrane, a transparent electrode plate, and spacers. Each transparent electrode plate has a plurality of openings. The display panel includes a plurality of pixels. The pixels emit optical signals. A Moire spatial period of the optical signals is less than 600 &#x3bc;m after the optical signals pass through the transparent speaker. When the transparent speaker is disposed on the display panel, a user is able to watch an image on the display panel through the transparent speaker without being interfered by a Moire.

Transparent speaker and display module integrating the same

A lens unit and a projection screen made of the same are disclosed. The lens unit includes a micro lens having a light incident surface and a light emergent surface opposing to the light incident surface; a light absorbing layer formed on the light emergent surface of the micro lens and having a cavity formed therein; a scattering layer formed in the cavity of the light absorbing layer and including a transparent resin blended with scattering particles; and a reflective layer formed on the light absorbing layer and the scattering layer. The projection screen includes a plurality of the lens units, thereby achieving high contrast and high energy utilization efficiency of incident light with a large viewing angle.

Lens unit and projection screen made of the same

A micro optical head is provided, which provides sub-wavelength focusing spot and very long depth of focus. The optical head includes a transparent substrate, an opaque film, and at least one sub-wavelength annular channel. After coherent light transmits the transparent substrate supporting the optical head and passes through the appropriately designed sub-wavelength annular channel, the transmitted light can overcome the diffraction limit, and the transmission energy is improved efficiently. The transmitted light converges after a certain distance behind the optical head and forms a sub-wavelength-scale beam that maintains a very long distance without divergence.

Optical head

Growing community of inventors

Taichung, Taiwan

You-Chia Chang