An organic light emitting diode (OLED) display includes a pixelated OLED display panel and a color-correction component disposed on the pixelated OLED display panel. The pixelated OLED display panel has a ratio of blue-to-red color mixing weights at 30 degrees of ?.sup.0.sub.30, and a ratio of blue-to-red color mixing weights at 45 degrees of ?.sup.0.sub.45, where ?.sup.0.sub.45??.sup.0.sub.30?1.05 and 1.5??.sup.0.sub.45?1.1. The color-correction component is configured such that a ratio of blue-to-red color mixing weights at 45 degrees of the display is ?.sub.45 and a ratio of blue-to-red color mixing weights at 30 degrees of the display is ?.sub.30, where ?.sup.0.sub.45?0.1??.sub.45?2.1??.sup.0.sub.45 and ?.sup.0.sub.30?0.05??.sub.30?2.05??.sup.0.sub.30. Methods of making OLED displays are described.

Described herein are biological devices and methods for using the same to produce a polyactive carbohydrate. The biological devices include microbial cells transformed with a DNA construct containing genes for producing a chitin synthase, a chitosanase, and a chitin deacetylase. In some instances, the biological devices also include a gene for lipase. Methods for using the polyactive carbohydrate are also provided herein, including, but not limited to, enhancing the physiological properties of plants; medical applications; applications in the construction, materials science, and home goods industries; personal care, grooming, cosmetics, and oral care compositions containing the polyactive carbohydrate; methods for water decontamination; and the production of polyurethanes.

Described herein are biological devices and methods for using the same to produce a polyactive carbohydrate. The biological devices include microbial cells transformed with a DNA construct containing genes for producing a chitin synthase, a chitosanase, and a chitin deacetylase. In some instances, the biological devices also include a gene for lipase. Methods for using the polyactive carbohydrate are also provided herein, including, but not limited to, enhancing the physiological properties of plants; medical applications; applications in the construction, materials science, and home goods industries; personal care, grooming, cosmetics, and oral care compositions containing the polyactive carbohydrate; methods for water decontamination; and the production of polyurethanes.