Also, no details from 250 nits to 10,000nits can be seen. The brightest a 250nit notebook panel can produce is 250nits and any image above 250nits is washed out. No panel can reach 10,000nits of natural light. VESA DisplayHDR requires the panel to meet minimum brightness, contrast, and color. *The number refers to the maximum nit level of the panel. VESA has introduced specifications* for notebook and monitor HDR panels: Normal sunlight can reach 10,000 nits, but the backlight on most notebooks today is around 250 nits 3 Analogix technology has produced the first VESA DisplayHDR400™-certified TCON enabling higher contrasts and more vibrant colors ( ANX2403).ĭisplay panels have difficulty displaying a wide range of brightness. VESA DisplayHDR™ standard specifies HDR quality, including luminance, color gamut, bit depth, and rise time.įig. HDR accurately maps real world color and luminance to a display panel. This increases the contrast (dynamic range) between light and dark, pulling out details from darkened or washed out areas. Your camera generates HDR images by using images from multiple exposures to combine the brightest and darkest parts of the picture. However, neither camera sensors nor display panels can display that range. That means we can see both very dark images and very bright images, at the same time. The human eye has an incredible dynamic range. The TCON is usually part of the panel design, while the GPU is on the motherboard.
#Date and timecontrol panel driver#
While the GPU is responsible for transforming mathematical equations into individual pixels and frames, a TCON takes the individual frames generated by the GPU, corrects for color and brightness, then sends out parts of the image to each individual driver at the panel’s specific timing. TV Systems usually use Vx1 connections, which are very tolerant to different cable types. They usually only work for screen sizes up to 10 inches MIPI connections require more wires but are lower power than eDP. This is Analogix’s specialty.ĮDP will replace LVDS over the next few years, adding new system capabilities while reducing system cost, power, and size.ĪRM processors usually use MIPI connections. 2).ĮDP connections are fast, use few wires, and are flexible for size, bandwidth and adding features eDP provides all panel connections in one plug, including power, data, and control signals. It is based on VESA DisplayPort ™ standard, same electrical interface and can share the same video port on the GPU (Fig. GPUs like Nvidia, AMD, and Intel’s integrated graphics send out their signals using an embedded DisplayPort (eDP connection).ĮDP was developed to be used specifically in embedded display applications such as notebooks, noteback PCs, all-in-one PCs. 1 TCON on circuit board below the glass panelĪnalogix specializes in TCONs, not the other components in a panel. TCONS direct the high voltage driver chips that move the color filters and are usually found on a circuit board that sits below the glass panel (Fig. The speed of the voltage adjustment affects the pixel response time. Varying levels of filtering produce the different colors. The brightness of the backlight determines the intensity of the display. The strength of the filtering determines the Contrast Ratio. A black display means all three colors are blocked at maximum effort. A white display means nothing is being blocked. High voltage signals to each individual pixel control how much of the backlight to block. In this article we will be talking about TCONs for the IT market: LCD (Liquid Crystal Display) notebook PCs and monitors.Īn LCD panel has millions of Red, Green, and Blue (RGB) liquid crystals that are used to block a white backlight when electrical voltage is applied to them. Every display panel has a timing controller (TCON), which is the only active component inside a display.ĭifferent displays use different types of TCONs.
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