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Spectrum filtering for visual displays and imaging having minimal angle dependence

An angle-dependent, spectral technology, applied in the field of spectral filters, can solve the problems of complex manufacturing process, waste of chemical materials, and increased cost

Inactive Publication Date: 2014-01-29
THE RGT OF THE UNIV OF MICHIGAN
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0006] However, such conventional optical pigment-based filters are manufactured through four separate processes, which not only complicates and increases the cost of the manufacturing process, but also wastes a large amount of chemical materials in the process
Although Fabry-Perot-based etalon filters have been proposed, conventional Fabry-Perot-based filters still suffer from problems regarding the undesired angular dependence, which refers to the The filter wavelength of an optical device is subject to a significant wavelength shift and thus color shift depending on the viewing angle
Such angular dependence is undesirable in various imaging and display applications

Method used

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  • Spectrum filtering for visual displays and imaging having minimal angle dependence
  • Spectrum filtering for visual displays and imaging having minimal angle dependence
  • Spectrum filtering for visual displays and imaging having minimal angle dependence

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Embodiment Construction

[0041] Example embodiments are provided so that this disclosure will be thorough, and will fully convey to those skilled in the art. Numerous specific details are set forth such as examples of specific components, devices and methods to provide a thorough understanding of embodiments of the present disclosure. It will be apparent to those skilled in the art that specific details need not be employed; that example embodiments may be embodied in many different forms and neither should be construed to limit the scope of the disclosure. In some example embodiments, well-known processes, well-known device structures, and well-known technologies are not described in detail.

[0042] The terminology used herein is for describing particular exemplary embodiments only and is not intended to be limiting. As used herein, singular forms may be intended to include plural forms as well, unless the context clearly dictates otherwise. The terms "comprising", "comprising", "comprising" and "...

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Abstract

An optical spectrum filtering device, e.g., color filter, having reduced angle dependence is provided that comprises an interference filter assembly comprising a high refractive index dielectric material, such as a Fabry-Perot based resonator structure. The filter assembly is capable of transmitting a portion of an electromagnetic spectrum into the dielectric material to generate a filtered output with a predetermined range of wavelengths that displays minimal angle dependence, when viewed from a range of incidence angles ranging from normal (0°) to 90°. Methods of making minimal angle dependent optical spectrum filters and reducing angle dependence for such devices are also provided.

Description

[0001] Cross References to Related Applications [0002] This application claims priority to US Patent Application Serial No. 13 / 452,313, filed April 20, 2012, and US Provisional Application Serial No. 61 / 477,554, filed April 20, 2011. The entire disclosure of the above application is incorporated herein by reference. technical field [0003] The present disclosure relates to spectral filters for visual displays, such as Fabry-Perot based spectral filters, with minimal angular dependence from viewing direction. The present disclosure also relates to methods of fabricating such spectral filters with minimal angular dependence. Background technique [0004] This section provides background information related to the present disclosure which is not necessarily prior art. [0005] Electromagnetic spectrum filters, such as color filters, are important components for various display technologies including flat panel displays, liquid crystal displays, projection displays, eyeglas...

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Application Information

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IPC IPC(8): G02B5/20G02F1/1335
CPCG02F1/216G02F2001/213G02F2201/346G02F2001/133521G02F2202/30G02F2202/32G02B5/288G02B5/201G02F1/133521G02F1/213G02B5/28G02F1/1335
Inventor 郭凌杰徐挺
Owner THE RGT OF THE UNIV OF MICHIGAN
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