What is BS EN 61747-4 - Liquid crystal display modules and cells about?
BS EN 61747-4 is the fourth part of the multi-series standard used for Liquid crystal display devices. This helps in manufacturing good quality Liquid crystal display modules and cells.
BS EN 61747-4 describes the essential ratings and characteristics of LCD cells and passive matrix monochrome liquid crystal display modules.
Note: BS EN 61747-4 does not apply to active-matrix LCD cells nor to multicolour cells.
Who is BS EN 61747-4 - Liquid crystal display modules and cells for?
BS EN 61747-4 on Liquid crystal display devices is useful for:
- Manufacturers of electronic display devices
- Manufacturers of laser display devices
- Theatre displays
- Electronic engineers
Why should you use BS EN 61747-4 - Liquid crystal display modules and cells?
A liquid-crystal display (LCD) is a flat-panel display that uses the light-modulating properties of liquid crystals combined with polarizers.
BS EN 61747-4 is useful in identifying the materials which are used in Liquid crystal display modules and cells according to their operational requirements. This helps in determining the electrical and optical characteristics of these display modules and cells. With the help of BS EN 61747-4, you can also determine the limiting values of these display devices. By applying BS EN 61747-4, you can manufacture good quality Liquid crystal display modules and cells.
What’s changed since the last update?
BS EN 61747-4:2012 supersedes BS EN 61747-4:1998. BS EN 61747-4:2012 includes some technical changes with respect to BS EN 61747-4:1998. These include:
- 2.1 and 3.1 of EN 61747-4:1998 were deleted because these items are defined in EN 61747-1
- 2.7.6, in 2.7, Supplementary information, of EN 61747-4:1998 was deleted because the scope of this standard is about passive matrix monochrome liquid crystal display modules
- the item “Gray scale: digital or analog” in 2.3.1 of EN 61747-4:1998 was changed to “Gray scale: number” because it is more accurate
- contrast mode: light symbol on dark background (“LOD” or “positive image”) or dark symbol on light background (“DOL” or “negative image”) was introduced in this part of EN 61747 to replace the description in 2.3.1 and 3.3.1 of EN 61747-4:1998.
