Optical sheet and optimizing method thereof
AssigneeLG.Philips LCD Co., Ltd.
InventorsDon Gyou Lee, Ki Yon Song, Soon Ho Lee, Jang Ryang Kim
Life of this patent
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Abstract
An optical sheet optimization method includes the steps of: extracting a statistic sample using transmissivity, haze data and luminance data of an optical diffusion sheet corresponding to the transmissivity and the haze data; making a regression model for the extracted statistic sample; calculating a regression coefficient to minimize an error term (residual) of the regression model and deriving a regression expression using the calculated regression coefficient; and predicting a luminance of the optical diffusion sheet due to changes of the transmissivity and the haze data using the derived regression expression.
Claims15
An optical sheet optimization method comprising the steps of:
- extracting a statistic sample using transmissivity, haze data and luminance data of an optical diffusion sheet corresponding to the transmissivity and the haze data;
- making a regression model for the extracted statistic sample;
- calculating a regression coefficient to minimize an error term (residual) of the regression model and deriving a regression expression using the calculated regression coefficient;
- and
- predicting a luminance of the optical diffusion sheet due to changes of the transmissivity and the haze data using the derived regression expression.
An optical sheet manufactured to be suitable for transmissivity and haze selected as optical sheet conditions using a result predicted through an optical sheet optimization method comprising the steps of:
- extracting a statistic sample using transmissivity, haze data and luminance data of an optical diffusion sheet corresponding to the transmissivity and the haze data;
- making a regression model for the extracted statistic sample;
- calculating regression coefficient to minimize an error term (residual) of the regression model and deriving a regression expression using the calculated regression coefficient;
- and
- predicting a luminance of the optical diffusion sheet due to changes of the transmissivity and the haze data using the derived regression expression.
An image display device comprising an optical sheet manufactured to be suitable for transmissivity and haze selected as optical sheet conditions using a result predicted through an optical sheet optimization method comprising the steps of:
- extracting a statistic sample using transmissivity, haze data and luminance data of an optical diffusion sheet corresponding to the transmissivity and the haze data;
- making a regression model for the extracted statistic sample;
- calculating regression coefficient to minimize an error term (residual) of the regression model and deriving a regression expression using the calculated regression coefficient;
- and
- predicting a luminance of the optical diffusion sheet due to changes of the transmissivity and the haze data using the derived regression expression.
Dependencies are inferred from the claim text.