Monday, December 10, 2012

The workshop prepares the new working table of cell phone jammer

 The workshop prepares the new working table of cell phone jammer .
STN screen is reflective LCD, it has the advantage of power consumption, but in a dark environment, clarity is poor. STN is our contact with the most material types, there are mainly divided CSTN and DSTN, it is a passive matrix LCD devices, so the power consumption, energy saving, but what should be a slower time for 200 ms. CSTN commonly used delivery methods lighting must be used outside illumination, known as backlighting, lighting to be installed behind the LCD. DSTN (Dual-Layer Super Twist Nematic) is a dual-scan twisted nematic, which means double-scan mode to scan through the twisted nematic liquid crystal display, to complete the display purpose. DSTN each pixel on the display brightness and contrast independently because they can not control, display poor, but its simple structure, less energy, cheap. DSTN-LCD color monitor is not true, it can only display a certain color depth, color CRT display characteristics and the far distance, so called "pseudo-color display." The work is characterized by: scanning the screen is divided into two parts, CPU parallel to refresh the two parts (two scans), although this refresh rate than the single-scan (STN) to redraw the entire screen twice as fast, but device performance is poor, it is inevitable due to two parts of sync and refresh the screen appears blurred in the horizontal line. The shoe for the worker in the cell phone jammer workshop is specially made.This can greatly improve response time, usually faster TFT response time of about 80ms, and the STN was 200ms, if you want to improve there will be flashing phenomenon. And as TFT active-matrix LCD is liquid crystal arrangement allows a memory, do not disappear immediately after the current restitution. TFT STN also improved flashing (water ripples) - blurred  effectively improve the ability of playing dynamic images. And compared to STN, TFT has excellent color saturation, reducing power and higher contrast, but the drawback is more power, and the cost is relatively high. The mobile phone market is currently using TFT color mainly 4096 Samsung SGH-T108, Sony Ericsson P802, Panasonic GD88, etc. TFD Thin Film Diode is ThinFilmDiode abbreviation. As the TFT high power consumption and high cost, it will increase the availability and cost of handsets, so TFD giant mobile screen technology has been developed specifically with Seiko Epson on the phone screen. It is a compromise between TFT and STN, STN has a better than the brightness and color saturation, but less power than TFT. TFD is characterized by "high-quality, ultra-low power consumption, small size, the dynamic image display capability and fast response time."

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