Introduction to Liquid Crystal Display (LCD)
“The world is flat now”

Color displays has become a part of everyday life. From televisions to PC monitors to automobile dashboards and even aircraft-cockpit instruments, the (once) ubiquitous color cathode-ray tube (CRT) introduced modern color technology into our lives. With the advent of the shadow-mask color CRT around 1950 and the widespread introduction of color television in the late 1950 and 1960s, color display technology achieved important status.

[Image: Custom design ColorTFT-LCD module for commercial applications] Article by Louis D. Silverstein,  moderation by editor@flatsoftdisplays.com

Bulky Displays: Color television continued to evolve and with it came heightened interest in other applications for electronic color imaging. However, despite the popularity and relative maturity of color television, most information-display and graphics-imaging applications were constrained to monochromatic bulky display devices until the mid to late 1970s. The widespread use of color dipslays awaited the ready availability of computers and particularly the astonishingly rapid developments in microprocessors and personal computers that began in the late 1970s and early 1980s. And at this moment the new generation of display “flat & slim”, color LCD, has been part of our every day lives.

Computer Technology: Obviously computer technology provided the necessary processing power to enable color images to be generated and stored efficiently, but perhaps more importantly computers offered the means to effectively encode, manipulate, and control color in electronic-display systems. From this starting point for contemporary color imaging, in only a scant 25 years, we have witnessed almost exponential growth in both the technology and application of color.

New Display Technology (LCD):

In recent past, consumers and system developers had only very limited options when selecting a color display. Few technology alternatives to the color CRT existed. Although the venerable color CRT still commands a portion of the market, this device has undergone steady declines in the market share as newer, more-compact, and more efficient display technologies (such as LCDs) have come to the forefront.

Today, we are confronted with a remarkable proliferation of display technologies capable of generating full-color images. Regardless of the display technologies employed, the common emphasis in virtually all application markets is on improved display image quality and lower display cost. Desired image-quality improvements for all displays consist of enhancements in contrast, luminance, and both spatial and temporal resolution.

Although color displays are not required for all applications, color has become so ubiquitous that it has almost become a de facto requirement for consumers. Moreover, consumers are growing ever-more knowledgeable about color, leading to expectations for improved color performance the form of wider display color gamuts, enhanced color saturation, and more-accurate rendering for all applications.

Advances in display color performance have in turn provided the impetus for advances in display color science by demanding new methods to measure, describe, control and utilize color in imaging systems. Moreover, recent advances in color imaging have even stimulated new ways to think about color and new paradigms for using color to improve visual performance and to enhance image understanding.

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