Gamma curve correction for TN and TFT display modules
A circuit and methods eliminating production related luminance variations of electronic display applies to all display technologies that require gamma adjustment or also adjustment of other display parameters e.g. brightness or contrast as e.g. LCD or OLED display modules are disclosed. This is perf...
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Format | Patent |
Language | English |
Published |
03.04.2012
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Online Access | Get full text |
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Abstract | A circuit and methods eliminating production related luminance variations of electronic display applies to all display technologies that require gamma adjustment or also adjustment of other display parameters e.g. brightness or contrast as e.g. LCD or OLED display modules are disclosed. This is performed by individual trimming of the display driver's gamma curve One alternative is that an end-user has access to a non-volatile memory and replaces the factory default settings of the gamma curve with individual settings. Another alternative is to load gamma curve parameters from the non-volatile memory to gamma control registers and perform tweaking of the gamma curve from these control registers on top of the factory default settings in the non-volatile memory. |
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AbstractList | A circuit and methods eliminating production related luminance variations of electronic display applies to all display technologies that require gamma adjustment or also adjustment of other display parameters e.g. brightness or contrast as e.g. LCD or OLED display modules are disclosed. This is performed by individual trimming of the display driver's gamma curve One alternative is that an end-user has access to a non-volatile memory and replaces the factory default settings of the gamma curve with individual settings. Another alternative is to load gamma curve parameters from the non-volatile memory to gamma control registers and perform tweaking of the gamma curve from these control registers on top of the factory default settings in the non-volatile memory. |
Author | Zehnich, Paul Burkhardt, Helmut Stellberger, Achim Kronmuller, Frank |
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References | Kudo et al. (2002/0186230) 20021200 Date et al. (2003/0184568) 20031000 Tone (6404512) 20020600 Sakamaki et al. (2004/0150653) 20040800 Jeong (2004/0113924) 20040600 Medina et al. (6359389) 20020300 Ishimaru (6008788) 19991200 Yamazaki et al. (2002/0079484) 20020600 Yamano et al. (2004/0066363) 20040400 Liquid Crystal Displays, by Ernst Lueder, May 2001, Ed-1, John Wiley & Sons, retrieved from the internet on Jul. 28, 2005: http://www.wiley-vch.de/publish/en/book/bySubjectEE00/bySubSubjectEE35/0-47-490.... Yer et al. (6731259) 20040500 Sempel et al. (2004/0174388) 20040900 Lee (2003/0085859) 20030500 Naito et al. (2002/0075277) 20020600 Tabata et al. (5012272) 19910400 Nakao (6437716) 20020800 Izumi (2004/0246221) 20041200 Baum et al. (2006/0202929) 20060900 |
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Snippet | A circuit and methods eliminating production related luminance variations of electronic display applies to all display technologies that require gamma... |
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Title | Gamma curve correction for TN and TFT display modules |
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