Light reflectant surface of expanded polytetrafluoroethylene with nodes and fibrils for backlit liquid crystal displays
First Claim
1. A backlighted visual display comprisingat least one sheet of expanded polytetrafluoroethylene (PTFE) comprising a structure of nodes and fibrils, the sheet being conformable;
- at least one light fixture mounted in the display;
a light transmitting screen;
the at least one sheet of expanded PTFE being mounted in the display so as to provide a high diffuse reflectivity of light from the light fixture through the screen.
3 Assignments
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Accused Products
Abstract
The present invention is an improved material and method for use for providing diffuse reflectivity of light in backlighted visual displays, such as liquid crystal displays (LCD) employed in a wide variety of applications. By employing an expanded polytetrafluoroethylene (PTFE) comprising a microstructure of polymeric nodes and fibrils, the material of the present invention demonstrates exceptional diffuse reflectivity across a wide spectrum of visible light. Additionally, the material of the present invention provides many properties that have been previously unavailable in highly diffuse reflective material, including a high degree of malleability, moldability and flexibility, and effective reflectivity even at relatively thin cross-sections.
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Citations
13 Claims
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1. A backlighted visual display comprising
at least one sheet of expanded polytetrafluoroethylene (PTFE) comprising a structure of nodes and fibrils, the sheet being conformable; -
at least one light fixture mounted in the display; a light transmitting screen; the at least one sheet of expanded PTFE being mounted in the display so as to provide a high diffuse reflectivity of light from the light fixture through the screen. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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Specification