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| Liquid crystal displays 16 16 dots transmissive large-sized liquid crystal display unit RCM1277U Thanks to the high contrast and wide viewing angle of the RCM1277U, which is provided by its unique design technology, this module brings forth new applications in brand new LCD fields. ROHM large-sized LCD units are perfect displays for information or sign boards. As a media for informational display, large-sized LCD units must possess high visibility, wide viewing angles, and other such superior qualities. ROHM large-sized LCDs boast an excellent track record and possess guaranteed functionality for assured satisfaction in a variety of situations. FApplications Public displays such as airport displays, train station displays, information boards, and billboards. FExternal dimensions (Units: mm) FFeatures 1) Wide viewing angle, high contrast, and fast response. 2) Compact and light weight for easy assembly. 3) Supports negative or positive display. 4) Low power consumption. 126 Liquid crystal displays FBlock diagram RCM1277U FPin functions (1) Input (CN1) (2) Output (CN2) 127 Liquid crystal displays FAbsolute maximum ratings (Ta = 25_C) RCM1277U FElectrical characteristics (VDD = 5.0 V 0.25 V, Ta = 25_C) FAC characteristics (VDD = 5.0 V, GND = 0 V, Ta = 25_C) FTiming characteristics 128 Liquid crystal displays FOptical characteristics (Ta = 25_C) RCM1277U (Note 1) Drive waveform Static drive (3) Maximum viewing angle: The direction with highest contrast expressed at the time axis (refer to above table). (Note 4) Definition of contrast ratio Definition Luminance during application of non-selective waveform Contrast ratio= Luminance during application of selective waveform Except, n = 1 with positive display and n = *1 with negative display. Measurement conditions Drive conditions: As per specifications Viewing angle: = 180_ , = 10_ (Note 5) Principles of optical measuring equipment n (Note 2) Definition of response speed Tr : Time for segment to darken 90% after selective waveform switches to non-selective waveform. = 180_ , = 10_ Td : Time for segment to darken 90% after selective waveform switches to non-selective waveform. = 180_ , = 10_ (Note 3) Definition of viewing angle (, ) (1) (2) : Angle subtended by the Y-Y'-axis and the observer's position projected onto the XY-plane. : Angle subtended by observer and the normal Z-Z'-axis (X-axis and Y-axis are positive) 129 Liquid crystal displays FData format (data and display mapping) RCM1277U 130 Liquid crystal displays FTiming chart RCM1277U 131 Liquid crystal displays FOperation notes (1) Attention points in handling S Protect the module from strong shocks as they can cause damage or defective operation. S The polarizing plate on the surface of the module is soft and can easily be scratched. Wipe away dirt and dust using an alcohol-based cleanser. S If the liquid crystal panel is damaged and liquid crystal contacts your clothing or body, wash immediately with soap and water. S Do not touch the IC lead electrodes or the electrode terminal components. S If the module is to be used for long periods subjected to direct sunlight, employ a filter to block the ultraviolet rays. S Do not store the module in areas of high temperature or high humidity. Do not store the module in locations exposed to direct sunlight or fluorescent light. S During handling of the module, in order to prevent damage to the tab, do not bend it more than two times. (2) Precautions during operation S Do not connect or disconnect the module while the power supply is turned on. S Input the input signal after the module power supply is turned on. When turning it off, turn off the input signal first. Otherwise the IC may be damaged by the latchup phenomenon. (3) Precautions during installation S Be careful to avoid damage from static electricity. A CMOS-IC is used in the modules circuitry that can be easily damaged by static electricity. S A protective film is pasted over the front and back of the module to protect the panel surfaces. When peeling this film off, be sure to peel as slow as possible in order to minimize the generation of static electricity. Use of a ion blower or other deionizing device is recommended. RCM1277U 132 |
Price & Availability of A5800184
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