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System and method for controlling the operation of a cholesteric display

A display, cholesteric technology used in static indicators, instruments, input/output processes for data processing, etc.

Inactive Publication Date: 2009-08-19
IBM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Disadvantages of this common solution include the required circuit area for the temperature sensor 110 on the cholesteric display driver 100, the development cost, and the current required for low power applications.

Method used

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  • System and method for controlling the operation of a cholesteric display
  • System and method for controlling the operation of a cholesteric display
  • System and method for controlling the operation of a cholesteric display

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Embodiment Construction

[0017] According to a preferred embodiment of the invention, the cholesteric display has a database of information to be displayed, an entry in the database indicating the temperature range of the display's environment. This entry is sent to the display controller to program the display based on a subset of the display's full operating temperature range.

[0018] Further in accordance with a preferred embodiment of the present invention, there is provided a method for updating a ChLCD display that eliminates the need for a temperature sensor integrated with the driver circuit and / or the display itself, when the display temperature is within a known range, Or especially useful in situations where the temperature of the display can be measured by a remote temperature sensing device. Such a detection device may also be shared, for example, by multiple displays and other electronic systems.

[0019] see figure 1 A cholesteric display application according to an exemplary embodi...

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PUM

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Abstract

A cholesteric display includes a display controller and a database. The database includes a control program for programming the operation of the display controller; a display field for storing information to be displayed at the cholesteric display; and a temperature range field for storing the temperature range of the cholesteric display environment. Input devices are provided for loading control programs, display information, and temperature or temperature range data into the database.

Description

technical field [0001] This invention relates to the control of cholersteric and other thermally sensitive displays. Background technique [0002] The advent of cholesteric liquid crystal displays (ChLCDs) has provided a revolutionary breakthrough in LCD display technology by providing a display technology that maintains images without consuming power while providing clear, sharp image views from the widest possible viewing angles. [0003] Due to their "no power" attributes, ChLCD display technologies are well suited for display rack advertising, electronic price tags, and many other low power display applications where equipment cost must also be kept to a minimum. [0004] Unlike super-twisted nematic LCD displays (STN-LCD displays) and other commonly used display technologies, ChLCD displays are updated through more complex methods such as Figure 4 The shown defines a precise time-voltage relationship that depends on the state and parasitic effects of a given pixel and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/36G09G3/20G02F1/133
CPCG09G2300/0486G09G2320/041G06F3/147G09G3/3611G09G2380/04
Inventor 雷蒙德·J·埃伯哈德马克·R·霍奇斯
Owner IBM CORP