Glossy display

Railway timetable shown on a CRT display with reflective vandal-proof cover glass, exhibiting distinct reflections from ambient light sources (sky, lamps). The visual information can only be read (with very low contrast) in the regions with shadow.

A glossy display is an electronic display with a glossy surface. In certain light environments, glossy displays provide better color intensity and contrast ratios than matte displays. The primary disadvantage of these displays is their tendency to reflect any external light, often resulting in an undesirable glare.^[1][2]

Technology

Some LCDs use an antireflective coating, or nanotextured glass surface, to reduce the amount of external light reflecting from the surface without affecting light emanating from the screen as an alternative to matte display.^[3]

Disadvantages

Because of the reflective nature of the display, in most lighting conditions that include direct light sources facing the screen, glossy displays create reflections, which can be distracting to the user of the computer.^[1][2] This can be especially distracting to users working in an environment where the position of lights and windows are fixed, such as in an office, as these create unavoidable reflections on glossy displays.

Adverse health effects

Ergonomic studies^[4] show that prolonged work in the office environment with the presence of discomforting glares and disturbances from light reflections on the screen can cause mild to severe health effects, ranging from eye strain and headaches to photosensitive epileptic episodes. These effects are usually explained by the physiology of the human eye and the human visual system. The image of light sources reflected in the screen can cause the human visual system to focus on that image, which is usually at a much farther distance than the information shown on the screen. This competition between two images that can be focused is considered to be the primary source of such effects.^[5]

Advantages

In controlled environments, such as darkened rooms, or rooms where all light sources are diffused, glossy displays create more saturated colors, deeper blacks, brighter whites, and are sharper than matte displays. This is why supporters of glossy screens consider these types of displays more appropriate for viewing photographs and watching films.^[1]

See also

• Anti-reflective coating
• Optical coating
• Matte display
• Nanotextured surface
• List of glossy display branding manufacturers

References

1. Johnson, Joel. "LCD Monitors: Glossy vs. Matte" Archived 2007-11-18 at the Wayback Machine. Popular Mechanics. April 2007. Retrieved December 3, 2007.
2. Thatcher, Michelle. "Counter the glare on your glossy display". CNET. October 23, 2006. Retrieved December 3, 2007.
3. "PixelBright LCDs" Archived 2006-10-18 at the Wayback Machine. ScreenTek. Retrieved December 3, 2007.
4. Brunnström, Kjell; Katarina Josefsson; Börje Andrén (October 2008). "The effects of glossy screens on the acceptance of flat-panel displays". Journal of the Society for Information Display. 16 (10): 1041–1049. doi:10.1889/jsid16.10.1041. ISSN 1938-3657.
5. Harle, E.; Alex J. Shepherd; Bruce J. W. Evans (October 2006). "Visual Stimuli Are Common Triggers of Migraine and Are Associated With Pattern Glare". Headache: The Journal of Head and Face Pain. 46 (9): 1431–1440. doi:10.1111/j.1526-4610.2006.00585.x. ISSN 0017-8748. PMID 17040340.

External links

• Glossy versus matte: fight! : From the News Desk at Ars Technica: a report of a Lenovo poll on matte vs. glossy LCDs by Jeremy Reimer, published Oct. 18, 2006.