KEYWORDS: Digital micromirror devices, Mirrors, Design, Projection systems, Diffraction, Light emitting diodes, Digital Light Processing, Reliability, RGB color model, Color
The High Efficiency Pixel (HEP) is the first new pixel node for Texas Instruments DLP® Products since 2013. It gives DLP Products a high efficiency Digital Micromirror Device (DMD) that has the area and tilt to support high brightness LED illumination with high contrast and a wide color gamut. HEP was designed to provide a cost-effective solution utilizing CMOS yield learning from prior pixel nodes and DMD superstructure designed specifically with high stiction margin operation. This results in a cost effective, high reliability DMD that supports high optical power densities. The pixel node supports a whole product family of the key resolutions: 1080p (or full HD), WUXGA, and 4k UHD. This paper presents the HEP requirements and design methodology and includes testing results and market acceptance.
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