User manual BENQ DVP 1648A

[. . . ] Further, Benq Corporation reserves the right to revise this publication and to make changes from time to time in the contents hereof without obligation of Benq Corporation to notify any person of such revision or changes. Use a soft cloth to clean the monitor housing and a tape to stick dust and fingerprints on the screen panel. Slots and openings on the back or top of the cabinet are provided for ventilation. This product should never be placed near or over a radiator or heat register, or in a built-in installation unless proper ventilation is provided. [. . . ] The adjustment can be autosaved. English 33 Benq LCD Color Monitor User's Guide Volume hot-key 1. The adjustment can be autosaved. Main Menu Mode Control Functions Available in Main Menu 1. Luminance Press "<"or ">" key to select this item and press "Enter" to enter sub-menu. There are two items for luminance adjustments. Brightness: adjust the brightness of the display. Contrast: adjust the difference between the light and dark areas. English 34 Benq LCD Color Monitor User's Guide 2. Geometry Press "<"or ">" key to select this item and press "Enter" to enter sub-menu. (Horizontal) Position: adjusts the horizontal position of the display. Pixel Clock: adjusts the frequency of the pixel. 3. Color Adjustment Press "<"or ">" key to select this item and press "Enter" to enter sub-menu. There are four items for geometry adjustments. English 35 Benq LCD Color Monitor User's Guide There are three items to adjust. Press "<"or ">"key to select a color and press "Enter" to adjust color temperature. 4. Miscellaneous Press "<"or ">"key to select this item and press "Enter" to enter sub-menu. There are four items for miscellaneous. OSD Setting: to adjust settings of OSD. Recall: recall to factory settings. English 36 Benq LCD Color Monitor User's Guide H. The layers of the liquid crystal molecules can therefore be longitudinal or diagonal to the polarising direction of the light and thereby have a varying effect on the course of light waves. LIQUID CRYSTALS POLARISE INCIDENT LIGHT An LC display consists of two polarising filters, a control layer, the respective colour filters and the liquid crystal layer. The light from a background lamp hits an initial polarisation membrane so that only a specific plane of polarisation of the light reaches the liquid crystal layer. Without any external electrical influence the liquid crystal molecules arrange themselves in a screw-like shape between the two vertically aligned polarising filters and the directional structure imposed as a result. The second polarising filter only allows through light with this rotated polarisation. If an electrical voltage is applied, the liquid crystal molecules orientate themselves along the field lines. The 90' screw is lifted up, the LC molecules appear parallel to the incident light and allow it to pass through without altering the polarising direction. The unrotated light hits the second, rotated polarising filter and is blocked. The intensity of the departing, visible light can be controlled by means of the voltage applied to the crystal layer and the polarised light rotated to a greater or lesser extent as a result. The TFT panel A. The standard TFT panel With TFT displays, also called active matrix, the light transmitting capacity of each pixel is in each case controlled by a transistor. The pixels can therefore be operated individually and addressed very quickly, which in turn guarantees perfect display even of moving images. With high-resolution LCDs well over two million pixels (three colour dots for the primary colours red, green and blue per pixel) have to be controlled. [. . . ] Response time The response time is the time, which a TFT cell requires to switch on and switch off. For standard applications a response time of a maximum of 70 ms (milliseconds) is sufficient. the multimedia field), then values of a maximum of 30 ms are required. D. Brightness Brightness is the emitted luminous power over a specified area. [. . . ]