4K Ultra High Definition (UHD) streaming media, players and Blu-ray Disc business are growing rapidly. 4K UHD content contains more than 8 million pixels per frame of data-more than four times the number of Full HD (1080p) content.

The challenge is how to present the details, depth of field, and immersive look and feel of 4K UHD content. We are accustomed to using large-screen TVs, 50-inch 1080p TVs are almost everywhere, and 4K large TVs are becoming more affordable. However, if we want to experience four times the details displayed by a 1080P TV, we can also reasonably assume that we need four times the screen size. This means that 4K UHD projection is the only display technology that can render super-large images at a reasonable price.

In a school or business environment, the projection display is very effective, making it easy for the audience to watch all the details. In home entertainment, projection can also bring an extremely exciting and immersive experience. The true 4K UHD display solution can display the 8 million pixels required by the 4K UHD specification, presenting accurate and clear images, allowing you to see all details clearly.

The key factors of 4K UHD technology
A pixel is just a very tiny unit in the picture. There are 8 million pixels per frame in 4K UHD content, but not all pixels are displayed the same. 4K UHD's more than 8 million pixels can display accurate images. In order to fully display all the details of 4K UHD content, the display device needs to have excellent American National Standards Institute (ANSI) contrast, perfectly calibrated pixels, high imaging speed, and high-quality image processing capabilities.

An image with high ANSI contrast can show very dark black and very bright white in the same picture, showing the true contrast of the image. Many technologies introduce other standard display image contrast, but these contrast options cannot simultaneously present dark black and bright white in the same picture. For example, a simple "on/off" contrast index only compares a full white screen and a dark screen, but since the real image is viewed in a single picture, it is crucial to display the darkest black and the brightest white in the same image important. With excellent ANSI contrast, the image is brighter, clearer, and more immersive.

The imaging panel is the core component of the projector. Panel technology is usually based on liquid crystal display (LCD), liquid crystal on silicon (LCOS) or Texas Instruments (TI) DLP technology to form an array of imaging elements. The pixels seen on the screen are all generated by these imaging elements. In DLP technology, the imaging element is a series of micromirrors, and the size of a single micromirror is about the size of a human red blood cell. Devices using DLP technology can accommodate millions of micromirrors, and the switching speed is unimaginable.

Some projectors use different imaging panels to form three primary colors: red, green and blue. Each component of the image panel must be precisely aligned to ensure that the three primary colors in each pixel overlap accurately. The smaller the pixel size, the more difficult it is to align the imaging panel during the manufacturing process. If the red, green, and blue pixels are not aligned, it will cause the display color to shift.

DLP single-chip technology uses only one imaging panel to display all colors, avoiding possible misalignment problems, so it is a very suitable technology for obtaining high-resolution images and 4K UHD content.

Look carefully at the white text on a black background-if you see red, green, or blue at the edge of the text, the imaging panel may be misaligned. Pixel calibration errors may cause color distortion in 4K UHD images.

The pixel size will shrink as the resolution increases. The 720P resolution image has 1 million pixels. The 1080P resolution image has 2 million pixels. 4K UHD presents 8 million pixels on the projection screen. Currently, the size of 4K UHD imaging elements is very small, and it is difficult to achieve calibration when multiple imagers are used. This is one of the biggest challenges facing 4K UHD projection technology.

Let all the pixels make the best use of
The Consumer Technology Association (CTA) defines 4K UHD as a technology that can display 8 million pixels on the screen. But in fact, not all "4K" projection technologies present the 8 million pixels specified by 4K UHD on the screen; some only present 4 million pixels. In order to take advantage of the large amount of detail in 4K UHD content, displaying 8 million pixels is clearly essential. Check the specifications of the technology you plan to use. Look up UHD acronyms.

One of the tasks of displaying 4K Ultra HD is to display all the details on the screen in a cost-effective way. One of the effective ways is to use imaging elements to generate multiple pixels and present extremely high-quality 4K UHD projection with a total of 8 million pixels. This can be achieved by integrating high-speed imaging functions and advanced signal processing functions. DLP 4K UHD technology uses advanced image processing algorithms to create bright, clear and accurate high-resolution pictures.