Display apparatus

Abstract

A method of driving an electro-luminescent apparatus including a scanning line, a data line, a power supply line, a pixel electrode, an opposite electrode, a luminescent element interposed between the pixel electrode and the opposite electrode, a first transistor, and a second transistor. In this method, setting a first potential of the power supply line and a second potential of the opposite electrode such that the first potential is higher than the second potential, and setting a first gate voltage that is applied to the first gate electrode and that makes the power supply line be electrically connected to the pixel electrode through the first transistor such that the first gate voltage is equal to or higher than the second potential set by the setting of the first potential and the second potential.

1 . A method of driving an electro-luminescent apparatus including a scanning line, a data line, a power supply line, a pixel electrode, an opposite electrode, a luminescent element interposed between the pixel electrode and the opposite electrode, a first transistor that has a first gate electrode and that controls an electrical connection between the pixel electrode and the power supply line, and a second transistor that has a second gate electrode electrically connected to the scanning line, and the method comprising:
 setting a first potential of the power supply line and a second potential of the opposite electrode such that the first potential is higher than the second potential; and   setting a first gate voltage that is applied to the first gate electrode and that makes the power supply line electrically connected to the pixel electrode through the first transistor such that the first gate voltage is equal to or higher than the second potential set by the setting of the first potential and the second potential.   
     
     
         2 . The method according to  claim 1 , further comprising:
 setting a second gate voltage that is applied to the first gate electrode and that makes the pixel electrode electrically disconnected from the power supply line such that the second gate voltage is equal to or lower than the first potential set by the setting of the first potential and the second potential.   
     
     
         3 . The method according to  claim 1 ,
 the first transistor being of P-channel type.   
     
     
         4 . The method according to  claim 1 ,
 the first gate voltage being always equal to or higher than the second potential set by the setting of the first potential and the second potential.   
     
     
         5 . The method according to  claim 1 ,
 the first gate voltage being always equal to or lower than the second potential set by the setting of the first potential and the second potential.   
     
     
         6 . The method according to  claim 1 ,
 the first gate voltage that makes the first transistor a maximum on-state being equal to or higher than the second potential set by the setting of the first potential and the second potential.   
     
     
         7 . The method according to  claim 1 ,
 the first gate voltage that makes the electrical connection between the pixel electrode and the power supply line maximum being equal to or higher than the second potential set by the setting of the first potential and the second potential.   
     
     
         8 . The method according to  claim 1 , the method further comprising:
 supplying a data signal to the first gate electrode through the second transistor.   
     
     
         9 . The method according to  claim 8 ,
 the data signal being applied to the first gate electrode as the first gate voltage.   
     
     
         10 . The method according to  claim 1 ,
 the second transistor being of N-channel type.   
     
     
         11 . A method of driving an electro-luminescent apparatus including a scanning line, a data line, a power supply line, a pixel electrode, an opposite electrode, a luminescent element interposed between the pixel electrode and the opposite electrode, a first transistor that has a first gate electrode and that controls an electrical connection between the pixel electrode and the power supply line, and a second transistor that has a second gate electrode electrically connected to the scanning line, and the method comprising:
 setting a first potential of the power supply line and a second potential of the opposite electrode such that the first potential is higher than the second potential; and   setting a second gate voltage that is applied to the first gate electrode and that makes the pixel electrode electrically disconnected from the power supply line such that the second gate voltage is equal to or lower than the first potential set by the setting of the first potential and the second potential.   
     
     
         12 . A method of driving an electro-luminescent apparatus including a scanning line, a data line, a power supply line, a pixel electrode, an opposite electrode, a luminescent element interposed between the pixel electrode and the opposite electrode, a first transistor that has a first gate electrode and that controls an electrical connection between the pixel electrode and the power supply line, and a second transistor that has a second gate electrode electrically connected to the scanning line, and the method comprising:
 setting a first potential of the power supply line and a second potential of the opposite electrode such that the first potential is lower than the second potential; and   setting a first gate voltage that is applied to the first gate electrode and that makes the power supply line electrically connected to the pixel electrode through the first transistor such that the first gate voltage is equal to or lower than the second potential set by the setting of the first potential and the second potential.   
     
     
         13 . The method according to  claim 12 , further comprising:
 setting a second gate voltage that is applied to the first gate electrode and that makes the pixel electrode electrically disconnected from the power supply line such that the second gate voltage is equal to or higher than the first potential set by the setting of the first potential and the second potential.   
     
     
         14 . The method according to  claim 12 ,
 the first transistor being of N-channel type.   
     
     
         15 . The method according to  claim 12 ,
 the first gate voltage being always equal to or lower than the second potential set by the setting of the first potential and the second potential.   
     
     
         16 . The method according to  claim 12 ,
 the first gate voltage being always equal to or higher than the second potential set by the setting of the first potential and the second potential.   
     
     
         17 . The method according to  claim 12 ,
 the first gate voltage that makes the first transistor a maximum on-state being equal to or lower than the second potential set by the setting of the first potential and the second potential.   
     
     
         18 . The method according to  claim 12 ,
 the first gate voltage that makes the electrical connection between the pixel electrode and the power supply line maximum being equal to or lower than the second potential set by the setting of the first potential and the second potential.   
     
     
         19 . The method according to  claim 12 , the method further comprising:
 supplying a data signal to the first gate electrode through the second transistor, the data signal being applied to the first gate electrode as the first gate voltage.   
     
     
         20 . The method according to  claim 12 ,
 the second transistor being of P-channel type.