The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 05, 2016
Filed:
Oct. 02, 2008
Benjamin John Broughton, Oxford, GB;
Allan Evans, Oxford, GB;
Paul Antony Gass, Oxford, GB;
Graham Roger Jones, Oxford, GB;
Andrew Kay, Oxford, GB;
Harry Garth Walton, Oxford, GB;
Takashi Yasumoto, Osaka, JP;
Yoshimitsu Inamori, Osaka, JP;
Kenji Maeda, Osaka, JP;
Benjamin John Broughton, Oxford, GB;
Allan Evans, Oxford, GB;
Paul Antony Gass, Oxford, GB;
Graham Roger Jones, Oxford, GB;
Andrew Kay, Oxford, GB;
Harry Garth Walton, Oxford, GB;
Takashi Yasumoto, Osaka, JP;
Yoshimitsu Inamori, Osaka, JP;
Kenji Maeda, Osaka, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
A display device is provided that comprises a liquid crystal display panel () for displaying an image by spatial light modulation. The image is represented by a plurality of image elements each having an image data value (). The display device further comprises a display controller () arranged to determine a signal voltage to be applied to the panel () for each image element in dependence upon its image data value () and a secondary data value () for the element, there being a predetermined mapping between the data values and the signal voltage. The secondary data values () are arranged to vary across the image so as to introduce variations in luminance as a result of the mapping. The mapping and secondary data values () are mutually arranged to take account of the signal voltage to on-axis luminance response of the panel () so that the luminance variations introduced on-axis tend to balance locally through spatial averaging to, and hence would not be perceivable by, an on-axis viewer (). The panel () furthermore has a non-linear off-axis luminance to on-axis luminance relationship, so that at least some of the luminance variations introduced off-axis do not balance locally through spatial averaging to, and hence would be perceivable by, an off-axis viewer ().