Liquid crystal display viewable under all lighting conditions
OwnerRan-Hong Raymond Wang, Min-Shine C. Wanginventors
Life of this patent
Estimating the term…
Abstract
A liquid crystal display (LCD) viewable under all lighting conditions without excessive power consumption is described. The LCD comprises a first dichroic polarizer, a second dichroic polarizer, an anti-reflection layer positioned in front of the first dichroic polarizer and a liquid crystal cell positioned between the first dichroic polarizer and the second dichroic polarizer. In addition, the LCD comprises a backlight assembly positioned behind the second dichroic polarizer. Finally, the LCD comprises a diffusing transflector positioned between the backlight assembly and the second dichroic polarizer. The diffusing transflector comprises a diffusing element and a transflective element.
Claims17
A liquid crystal display comprising:
- (a) a first dichroic polarizer;
- (b) a second dichroic polarizer;
- (c) an anti-reflection layer positioned in front of the first dichroic polarizer with reflection energy less than 1% and a surface with a haze value less than 15%, the anti-reflection layer being a high efficiency multi-layer coating;
- (d) a liquid crystal cell positioned between the first dichroic polarizer and the second dichroic polarizer;
- (e) a backlight assembly positioned behind the second dichroic polarizer;
- and
- (f) a diffusing transflector positioned between the backlight assembly and the second dichroic polarizer, the diffusing transflector comprising a diffusing element and a transflective element, the diffusing element being a corrugated surface with a haze value of 10% to 85%.
A liquid crystal display comprising:
- (a) a first dichroic polarizer with a first transmission direction;
- (b) a second dichroic polarizer with a second transmission direction, the second transmission direction forming an angle between 0 and 90 degrees relative to the first transmission direction;
- (c) an anti-reflection layer positioned in front of the first dichroic polarizer with reflection energy less than 1% and a surface with a haze value less than 15%;
- (d) a liquid crystal cell positioned between the first dichroic polarizer and the second dichroic polarizer;
- (e) a backlight assembly positioned behind the second dichroic polarizer, the backlight assembly having 1 to 12 lamps and multiple polymeric films enhancing light transmission and optical performances, the lamps being edged or back-sided;
- and
- (f) a diffusing transflector positioned between the backlight assembly and the second dichroic polarizer, the diffusing transflector comprising a diffusing element and a transflective element, the diffusing element having a corrugated surface with a haze value of 10% to 85%, and the transflective element being either a selective reflective polarizer with an extinction coefficient of 1.5 to 9 and an absorption of incident energy value less than 10%, or a beam splitter with a transmission value of 30% to 85%.
A liquid crystal display comprising:
- (a) a first dichroic polarizer with a first transmission direction;
- (b) a second dichroic polarizer with a second transmission direction, the second transmission direction forming an angle between 0 and 90 degrees relative to the first transmission direction;
- (c) an anti-reflection layer positioned in front of the first dichroic polarizer with reflection energy less than 1% and a surface with a haze value less than 15%;
- (d) a liquid crystal cell positioned between the first dichroic polarizer and the second dichroic polarizer;
- (e) a backlight assembly positioned behind the second dichroic polarizer, the backlight assembly having 1 to 12 lamps and multiple polymeric films enhancing light transmission and optical performances, the lamps being edged or back-sided;
- and
- (f) a diffusing transflector positioned between the liquid crystal cell and the second dichroic polarizer, the diffusing transflector comprising a diffusing element and a transflective element, the diffusing element having a corrugated surface with a haze value of 10% to 85%, and the transflective element being a beam splitter with a transmission value of 30% to 85%.
Dependencies are inferred from the claim text.