초록 ▼

Reflective polarizers, which transmit one polarization and reflect the other polarization, have an extended red band edge in the off-axis transmission spectrum to control off axis color (OAC) hue. To control the OAC hue, the red band edge of the off-axis transmission spectrum, or OAC spectrum, is sh

Reflective polarizers, which transmit one polarization and reflect the other polarization, have an extended red band edge in the off-axis transmission spectrum to control off axis color (OAC) hue. To control the OAC hue, the red band edge of the off-axis transmission spectrum, or OAC spectrum, is shifted beyond the boundary for red light, or to at least 600 nm. Even more preferably, the OAC spectrum is extended further into the red than any red emission peak of an associated lamp providing light into a system in which the reflective polarizer is used. The concept applies equally well to any type of reflective polarizer, such as multilayer reflective polarizers, cholesteric reflective polarizers, and the like. The resulting reflective polarizers are very useful for many different applications, such as liquid crystal displays.

대표청구항 ▼

[ We claim:] [1.] A liquid crystal display (LCD) system, comprising:a light source including a light guide, the light source having a characteristic emission spectra having a red emission peak;an LCD panel; anda reflective polarizer disposed in an optical path between the LCD panel and the light sou

[ We claim:] [1.] A liquid crystal display (LCD) system, comprising:a light source including a light guide, the light source having a characteristic emission spectra having a red emission peak;an LCD panel; anda reflective polarizer disposed in an optical path between the LCD panel and the light source, the reflective polarizer having an off-axis color red band edge, for light having a 45 degree angle of incidence, that is greater than a wavelength corresponding to the red emission peak.