Controlling Display

Abstract

An energy-conserving mobile station and a means for reducing the energy consumption of a mobile station and to reduce burn-in on the display element, where a part of the liquid crystal display element (LCD) of a mobile station is switched off, when the whole display element is not needed and a limited amount of information is displayed on the switched-on part of the display element (A 1 ). An arrangement according to the present invention can be implemented by e.g. driving the control circuit (DC) of the liquid crystal display that supports the partition of the display element to switch of certain rows of the display element in energy conservation mode and switching them on to be used, when information is desired to be displayed on all of the display element.

1 . An electronic device, comprising: 
 a display element configured to display information, to operate in two modes, including a full-screen mode to use the entire display element to display a first information and a partial screen mode to use a first part of the display element in which partial screen mode a second part of the display element is switched off; and    a processor configured to switching the device into energy conservation mode by switching the display element to said partial screen mode,    to control the display element during energy conservation mode in order to display information on said first part, to    change the position of the first part of the display element on the display element at a first set interval and to change information displayed on the first part of the display element with update information from an application during energy conservation mode.    
   
   
       2 . A device according to  claim 1 , wherein said first part comprises an amount of image particles, and the power consumption of the display element corresponds to the amount of said image particles.  
   
   
       3 . A device according to  claim 1 , wherein the processor is configured to change the position of said first part in a certain order in certain intervals.  
   
   
       4 . A device according to  claim 1 , wherein the processor is configured to randomly change the position of said first part.  
   
   
       5 . A device according to  claim 1 , wherein the processor is configured to change the position of said first part by scrolling the position on the display element.  
   
   
       6 . A device according to  claim 1 , wherein said first part comprises a certain amount of rows.  
   
   
       7 . A device according to  claim 1 , wherein said first part comprises a certain amount of columns.  
   
   
       8 . (canceled)  
   
   
       9 . A device according to  claim 1 , wherein said processor is configured to end the energy conserving mode in response to one of the following events: user input, incoming call, an increase in displayed information and a combination of these.  
   
   
       10 . A device according to  claim 1 , which device is a mobile station.  
   
   
       11 . (canceled)