Electroluminescent lamp for liquid crystal display
First Claim
1. An improved combination electroluminescent backlight and incident light reflector for a liquid crystal display for nighttime and daytime viewing, respectively, the improvement comprising:
- a liquid crystal displaya light-reflective electrode in said electroluminescent backlight arranged to reflect incident light entering and passing through said liquid crystal display, anda thin electroluminescent layer in said electroluminescent backlight between said light-reflective electrode and said liquid crystal display having a minimal amount of phosphor selected to provide for light diffusion for improving daytime viewability of said liquid crystal display as well as to provide a light source for improving nighttime viewability of said crystal display, in which said minimal amount of phosphor is dispersed in a binder in said electroluminescent layer in substantially one volume unit of phosphor for every four to five volume units of binder.
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Accused Products
Abstract
A backlighted liquid crystal display is disclosed which includes an electroluminescent backlight having a reduced amount of phosphor acting as both a source of light for viewing the display during nighttime hours and as a light diffuser for viewing the display during daytime hours. The electroluminescent backlight is made thinner while the phosphor content is optimally reduced to provide a backlight that improves the viewability of the display especially during daytime hours without the need of a transflector. Wherein the minimal amount of phosphor is dispersed in a binder in the electroluminescent layer is substantially 1 volume unit of phosphor for every 4 to 5 volume units of binder.
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Citations
6 Claims
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1. An improved combination electroluminescent backlight and incident light reflector for a liquid crystal display for nighttime and daytime viewing, respectively, the improvement comprising:
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a liquid crystal display a light-reflective electrode in said electroluminescent backlight arranged to reflect incident light entering and passing through said liquid crystal display, and a thin electroluminescent layer in said electroluminescent backlight between said light-reflective electrode and said liquid crystal display having a minimal amount of phosphor selected to provide for light diffusion for improving daytime viewability of said liquid crystal display as well as to provide a light source for improving nighttime viewability of said crystal display, in which said minimal amount of phosphor is dispersed in a binder in said electroluminescent layer in substantially one volume unit of phosphor for every four to five volume units of binder. - View Dependent Claims (2, 3, 4, 5, 6)
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Specification