发明授权
US08643936B2 Devices and methods for achieving non-contacting white state in interferometric modulators
失效
用于在干涉式调制器中实现非接触白态的装置和方法
- 专利标题: Devices and methods for achieving non-contacting white state in interferometric modulators
- 专利标题(中): 用于在干涉式调制器中实现非接触白态的装置和方法
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申请号: US13308324申请日: 2011-11-30
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公开(公告)号: US08643936B2公开(公告)日: 2014-02-04
- 发明人: John H. Hong , Marc Maurice Mignard
- 申请人: John H. Hong , Marc Maurice Mignard
- 申请人地址: US CA San Diego
- 专利权人: QUALCOMM MEMS Technologies, Inc.
- 当前专利权人: QUALCOMM MEMS Technologies, Inc.
- 当前专利权人地址: US CA San Diego
- 代理机构: Knobbe, Martens, Olson & Bear, LLP
- 主分类号: G02B26/00
- IPC分类号: G02B26/00
摘要:
This disclosure provides systems, methods and apparatus for providing white light color output from an electromechanical systems (EMS) device with reduced likelihood of stiction. In one aspect, interferometric modulators are configured to provide a white color output while having a non-zero modulator gap dimension. Such a feature can reduce problems associated with zero modulator gap dimensions such as stiction. Various methodologies can be used to yield such a non-zero modulator gap and a white color output. In some implementations, for example, an optical element that introduced wavelength dependent phase shift is used. In some implementations this wavelength dependent phase shifting optical element includes a stack of color filters, a hologram, a diffraction grating, or layers of material having specific thicknesses and wavelength dependent indices of refraction.