CCFL


Cold Cathode Fluorescent Lamps (CCFLs)
   In the twenty-first century digital network, liquid crystal display televisions (LCD TVs) are expected to expand greatly in popularity as one of the most commonly used home appliances, so CCFLs have a high potential for growth as their backlights.
  The synergy of the companies' respective technologies helped to initiate new technical developments. Our state-of-the-art technological developments include hard glass, a proprietary mercury inclosing method, hard outer leads, and cup electrodes, which make our CCFLs the de facto standard of the industry. Sanken's lamps are available in a range of 1.8 to 4.0 mm in diameter and 150 to 1,500 mm in length. Moreover, the neon-argon ratio, quantity of mercury, sealing pressure, fluorescent material, electrodes, and other characteristics can be customized to individual customer specifications.
 
○ Sanken Total Solution for Displays
○ Features
○ Light emitting principle/○ Emission Wavelength of invisible light/○ Ambient Temperature (Lamp Surface Temperature) Characteristics
○ Mercury Vapor Pressure and Amount/○ Distribution of Lamp Surface Temperature and Mercury
○ Part Numbering System/○ Outline and Structural Drawings/○ Outer Lead
○ Characteristic Diagram
○ Life
 
1. List of Product Lives
2. Life Determination
3. Precautions at end of Lamp Life
4. Examples of Lamp Failures
5. Notes on Lamp Lighting Waveform
6. Fall of Luminance of CCFL and System
○ Measurement
 
1. Measuring equipments
2. Measuring Method
3. Selection of Lamp Specifications (Confirmation of Matching of Lamp Specifications and Backlight)
4. Terminology
5. Equipment Error of Topcon Luminance Colorimeter (BM-type)
○ Current Dimming and PWM Dimming
○ CCFL Leak Current at LCD Module
○ Electrical Characteristics at Backlight System
 
1. Lighting start voltage in System
2. Lamp Voltage and Lamp Power in System
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