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Switchable viewing angle display

US8928567B2 · US · B2

Patent metadata
FieldValue
Publication numberUS-8928567-B2
Application numberUS-201113104896-A
CountryUS
Kind codeB2
Filing dateMay 10, 2011
Priority dateAug 31, 2010
Publication dateJan 6, 2015
Grant dateJan 6, 2015

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  1. Title

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  2. Abstract

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  3. Assignees and inventors

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  4. Key dates

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  5. First independent claim

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  6. CPC / IPC classifications

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  7. Citations and related patents

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Abstract

Official abstract text for this publication.

A switchable viewing angle display method is provided, using arrayed microlenses and a waveguide pipe with selectable light extraction positions. The method provides a front panel array of display pixels. Also provided is an array of microlenses underlying the array of display pixels. Each microlens has a focal point and each microlens is associated with a corresponding block of display pixels. A backlight panel has an edge-coupled waveguide pipe with an optical input connected to a column of light emitting diodes (LEDs). The backlight panel includes an array extraction pixels, each extraction pixel underlying a corresponding microlens, and the backlight panel also includes a planar mirror underlying the waveguide pipe. In response to a display viewing angle change command, a waveguide pipe's light extraction position is selected, which is the distance between the extraction pixels and their corresponding microlenses, and the display viewing angle is changed.

First claim

Opening claim text (preview).

We claim: 1. A switchable viewing angle display method, using arrayed microlenses and a waveguide pipe with selectable light extraction positions, the method comprising: providing a liquid crystal (LC) front panel array of display pixels arranged in a plurality of sequences; providing an array of microlenses underlying the array of display pixels, where each microlens has a focal point and each microlens is associated with a corresponding block of display pixels; providing a b…

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Frequently asked questions

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What does patent US8928567B2 cover?
A switchable viewing angle display method is provided, using arrayed microlenses and a waveguide pipe with selectable light extraction positions. The method provides a front panel array of display pixels. Also provided is an array of microlenses underlying the array of display pixels. Each microlens has a focal point and each microlens is associated with a corresponding block of display pixels.…
Who is the assignee on this patent?
Huang Jiandong, Voutsas Apostolos T, Sharp Lab Of America Inc
What technology area does this patent fall under?
Primary CPC classification G09G3/342. Mapped technology areas include Physics.
When was this patent published?
Publication date Tue Jan 06 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
What related patents are in patentsdb?
We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).