Invention Grant
US08339542B2 Passive and hybrid daylight-coupled N-stack and collapsible backlights for sunlight viewable displays
失效
被动和混合日光耦合的N-stack和可折叠背光用于阳光可观的显示器
- Patent Title: Passive and hybrid daylight-coupled N-stack and collapsible backlights for sunlight viewable displays
- Patent Title (中): 被动和混合日光耦合的N-stack和可折叠背光用于阳光可观的显示器
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Application No.: US12492166Application Date: 2009-06-26
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Publication No.: US08339542B2Publication Date: 2012-12-25
- Inventor: Rolf W. Biernath , Jennifer R. Yi , Keith M. Kotchick
- Applicant: Rolf W. Biernath , Jennifer R. Yi , Keith M. Kotchick
- Applicant Address: US MN Saint Paul
- Assignee: 3M Innovative Properties Company
- Current Assignee: 3M Innovative Properties Company
- Current Assignee Address: US MN Saint Paul
- Main IPC: G02F1/1335
- IPC: G02F1/1335

Abstract:
A passive daylight-coupled display having an LCD panel, a diffuser, and a curved reflector behind the LCD panel. For passive backlighting, the diffuser transmits daylight to the reflector, which reflects the daylight to the LCD panel and provides for substantially uniform distribution of the daylight on the LCD panel for backlighting it. An N-stack daylight-coupled display includes a plurality of passive backlights cascaded in a stack for backlighting of LCD panels or static display panels. One N-stack display can include an active light source to provide light to the reflectors, and a secondary light source to provide light to at least one of the reflectors to provide backlighting of the display in low lighting conditions. A collapsible daylight-coupled display includes a daylight-coupled backlight that is collapsible when not in use for hand-held or portable display devices.
Public/Granted literature
- US20100328578A1 PASSIVE AND HYBRID DAYLIGHT-COUPLED N-STACK AND COLLAPSIBLE BACKLIGHTS FOR SUNLIGHT VIEWABLE DISPLAYS Public/Granted day:2010-12-30
Information query
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