HP L1945wv Manuals

1 Understanding pixel defects in LCD monitors Bob Myers Displays Business Unit Last revised: July 1, 2009 Introduction......................................................................................................... 2 Executive summary ............................................................................................. 2 Understanding TFT-LCD technology ...................................................................... 3 How LCDs work .............................................................................................. 3 Why TFTs? ...................................................................................................... 3 Understanding pixel defects ................................................................................. 4 How pixel defects occur................................................................................... 4 How to spot a sub-pixel defect ........................................................................ 5 HP pixel-defect standards .................................................................................... 5 HP specifications ............................................................................................. 5 International standards (ISO-9241) .................................................................. 6 Defect type definitions ..................................................................................... 8 The HP advantage ............................................................................................... 9 HP quality and reliability ................................................................................. 9 Designed with the environment in mind ........................................................... 9 HP service and support .................................................................................. 10 For more information ........................................................................................ 11

HP L1750, L1950/L1950g, L1710, L1910, L1908w, L1908wm, L1945w, L1945wv, L2208w, L2245w/L2245wg, and L2445w LCD Monitors User Guide

QuickSpecs HP L1945wv 19-inch Widescreen LCD Monitor Technical Specifications Worldwide — Version 1 — March 7, 2008 Page 1 HP L1945wv 19-inch Widescreen LCD Monitor 1. Menu / Select 4. Power LED 2. “-”/Auto 5. Power 3. “+” Model KH128AA Type 19-inch diagonal Wide-Aspect Active Matrix TFT (thin film transistor) Viewable Image Area 19 in (48.25 cm) widescreen; diagonally measured Screen Opening (W x H) 16.1 x 10.1 in (40.98 x 25.67 cm) Viewing Angle (typical) Up to 160° horizontal/160° vertical (10:1 minimum contrast ratio) Brightness (typical)* 300 nits (cd/m 2 ) Contrast Ratio (typical)* 1000:1 Response Time (typical)* 5 ms (on/off) Pixel Pitch 0.282 mm Panel Backlight Lamp Life (to half brightness) 30K hours *All performance specifications represent the typical specifications provided by HP's component manufacturers; actual performance may vary either higher or lower. Buttons or Switches Input select/OSD UP, auto adjust/OSD down, OSD menu select, power On Screen Display (OSD) Controls Languages English, French, German, Spanish, Italian, Dutch, Japanese, S. Chinese, and Portuguese