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LOW TEMPERATURE LCD DISPLAY TIME COMPENSATION

IP.com Disclosure Number: IPCOM000130528D
Publication Date: 2005-Oct-25
Document File: 2 page(s) / 26K

Publishing Venue

The IP.com Prior Art Database

Abstract

The time required for LCD segments to change contrast increases as the temperature of the display decreases. When the display shows changing items, each is typically held on the display for a fixed amount of time. At lower temperatures, the contrast response time can approach or even exceed the item display time, making it difficult or impossible to read the display. Typically, the overall product temperature and by inference the display temperature is available to the processor driving the display.

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LOW TEMPERATURE LCD DISPLAY TIME COMPENSATION

Description:

The time required for LCD segments to change contrast increases as the temperature of the display decreases. When the display shows changing items, each is typically held on the display for a fixed amount of time. At lower temperatures, the contrast response time can approach or even exceed the item display time, making it difficult or impossible to read the display. Typically, the overall product temperature and by inference the display temperature is available to the processor driving the display. The processor can add, as a function of temperature, sufficient additional item display time to assure low temperature readability. Figure 1 illustrates: