We welcome manufacturers, distributors  and other business partners who are looking for best quality LCD displays and LCD modules to contact us for long-term business collaborations.

What are LCD Displays?

LCD stands for liquid crystal display. It is a passive display technology, in that they do not emit light or radiation. They either reflect or transmit the light in the environment. By manipulating this light, they display images using very little power. This has made LCD displays the preferred technology whenever low power consumption and compact size are required.

How does LCD Displays Work?

Liquid crystal is an organic substance that has both a liquid form and a crystal molecular structure. The rod-shaped molecules are normally in a parallel array, and an electric field can be used to control the orientation of the molecules. LCD displays consist of two pieces of glass with transparent electrodes printed on the internal surfaces. An alignment layer on each glass surface is used to twist the liquid crystal material in a helical or "twisted" pattern. Polarizers are used on the outside front and rear surfaces. When the LCD display is "off", no voltage is applied to the electrodes, and light passes through the LCD. When the LCD display is "on", voltage is applied and the LC molecules align themselves in the direction of the electric field. This causes the light to be out of phase with the polarizers and to be blocked, creating a dark area on the LCD. By selectively applying voltage to the electrodes, a variety of patterns can be achieved.

Common Types of Liquid Crystal

Most LCD displays today use a type of liquid crystal called twisted nematic (TN), with a maximum twist angle of 90º. Many advances in TN LCD displays have been produced. Super twisted nematic (STN) LC material offers a higher twist angle (240º vs. 90º) that provides higher contrast and a better viewing angle. However, the downside is the birefringence effect, which shifts the background color to yellow-green and the character color to blue. This background color can be changed to a gray by using a special filter. The most recent advance has been the introduction of film super twisted nematic (FSTN) displays. This adds a retardation film to the STN display that compensates for the color added by the birefringence effect. This allows a black and white display to be produced. Because of the added filtering, FSTN displays look best when used with a backlight.

DKE Display Displays: Standard and Customized

DKE Display has been manufacturing high quality and low cost LCD displays and LCD modules for 15 years, and has been the choice for manufacturers, developers, engineers, distributors, wholesalers and other customers all over the world, due to its high standards, superior services and technical support. We have been one of the accredited LCD manufacturers since 1990. Our quality control system meets ISO9001 standards, with certificate issued by DNV. We guarantee complete customer satisfaction with every model of our products. Click here to contact us for business.
 

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