Invention Grant
- Patent Title: Reflective color display
- Patent Title (中): 反光颜色显示
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Application No.: US14095526Application Date: 2013-12-03
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Publication No.: US08982446B2Publication Date: 2015-03-17
- Inventor: William J. Ray
- Applicant: Nthdegree Technologies Worldwide Inc.
- Applicant Address: US AZ Tempe
- Assignee: Nthdegree Technologies Worldwide Inc.
- Current Assignee: Nthdegree Technologies Worldwide Inc.
- Current Assignee Address: US AZ Tempe
- Agency: Patent Law Group LLP
- Agent Brian D. Ogonowsky
- Main IPC: G02B26/00
- IPC: G02B26/00 ; G02F1/29 ; H01L33/60 ; G02B26/08 ; G02F1/23 ; G02B26/02 ; H01L33/50

Abstract:
A reflective color display is disclosed. A substrate supports a first conductor layer and pixel wells. A piezoelectric segment is formed in each pixel well over the first conductor layer. A second conductor layer overlies the piezoelectric segments, wherein an electric field created across any piezoelectric segment causes the piezoelectric segment to expand or contract under control of the electric field. A Bragg reflector segment overlies each piezoelectric segment and is compressible by expansion of the underlying piezoelectric segment. A white light LED layer overlies the Bragg reflector segments. By varying the electric field across each piezoelectric segment, the overlying Bragg reflector segment is controlled to reflect a selected wavelength for each pixel of the display. The walls of the pixel wells provide acoustic isolation between adjacent pixel wells. An acoustic membrane isolates the Bragg reflector segment from high frequency vibrations of the piezoelectric segment.
Public/Granted literature
- US20140198373A1 REFLECTIVE COLOR DISPLAY Public/Granted day:2014-07-17
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