Analysis of technologies and solutions to improve LCD TV display performancePrint Version Page, 1/4 Technical LibraryTo print this article, select \"File\" and then \"Print\" from your browser menu. Analysis of technologies and solutions to improve LCD TV display performanceOnline time: July 13, 2006In the process of TFT-LCD modules moving from traditional computer monitor applications to TV applications, design engineers face technical challenges such as slow response, flicker, and backlight. This article discusses new technologies to solve these challenges, including eliminating gamma mismatch and improving the contrast of bright and dark images, and provides corresponding new device applications. LCD displays have rapidly gained popularity in the past five years. This technology, which promoted the development of the notebook computer market, now replaces CRT in many desktop computer applications. It can reproduce text clearly and provide a large display area in a form factor that does not take up the entire desktop. Today, with the integration of PC and multimedia experience, high-performance video reproduction is becoming a key requirement for this technology. Some of the defects of LCD displays in the past include poor color reproduction, motion image tailing, and the inability to reproduce details, especially in very bright or very dark image areas. In addition to the technical problems, another disadvantage of LCD displays is the high cost. If the voltage is not taken into account, the current CRT provides a very cost-effective display solution. The price of LCD panels has dropped rapidly, especially in the second half of last year. The oversupply of panels has led many manufacturers to reduce their prices, although some manufacturers have also cut production to balance supply and demand. This article will discuss some of the new technologies that enable TFT-LCD to have better video reproduction, and how the pressure to reduce costs conflicts with these technological trends. LCD module components Figure 1 shows the typical circuit of an LCD module. Whether the panel is designed to be used as a monitor for a notebook, desktop computer, or applied to a TV, all of these functions are necessary, but the performance of each type of product is different. The timing controller is a digital IC located in the center of the panel. It is responsible for controlling the timing of the scanning mechanism that writes data to the LCD display. The timing controller resets the column and row drivers to...
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