Display device, and method for driving display device

A display device including a plurality of data signal line drive circuits, comprising:

• voltage generating circuits, provided for each of the plurality of data signal line drive circuits, that generate, in accordance with an external voltage inputted from an outside source, drive voltages that are needed to drive the data signal line drive circuit;
• and
• voltage determining circuits, provided for each of the plurality of data signal line drive circuits, that determine whether or not a voltage level of at least either the external voltage or the drive voltages fall within a predetermined range of allowable voltages, wherein
• in a case where it has been determined, in at least one of the plurality of voltage determining circuits, that the voltage level does not fall within the range of allowable voltages, operation of the voltage generating circuits corresponding to all of the data signal line drive circuits is stopped such that none of the voltage generating circuits generate the drive voltages, wherein:
• each of the plurality of data signal line drive circuits further comprises safety control circuits that control how the voltage generating circuits are driven;
• and
• upon receiving, from the voltage determining circuits, a result of determination indicating that the voltage level does not fall within the range of allowable voltages, the safety control circuits cause operation of the voltage generating circuit corresponding to the data signal line drive circuit in which that safety control circuit is provided to be stopped, wherein:
• in a case where in at least one of the data signal line drive circuits the voltage level does not fall within the range of allowable voltages, the voltage determining circuits corresponding to that data signal line drive circuit transmits the result of determination to the safety control circuits of that data signal line drive circuit;
• and
• upon receiving the result of determination from the voltage generating circuits, the safety control circuits further transmit, to the safety control circuits of all of the other data signal line drive circuits, stop-starting information for starting a stopping process of stopping the operation of the voltage generating circuits corresponding to those data signal line drive circuits.

A display device including a plurality of data signal line drive circuits, comprising:

• voltage generating circuits, provided for each of the plurality of data signal line drive circuits, that generate, in accordance with an external voltage inputted from an outside source, drive voltages that are needed to drive the data signal line drive circuit;
• and
• voltage determining circuits, provided for each of the plurality of data signal line drive circuits, that determine whether or not a voltage level of at least either the external voltage or the drive voltages fall within a predetermined range of allowable voltages, wherein
• in a case where it has been determined, in at least one of the plurality of voltage determining circuits, that the voltage level does not fall within the range of allowable voltages, operation of the voltage generating circuits corresponding to all of the data signal line drive circuits is stopped such that none of the voltage generating circuits generate the drive voltages, wherein:
• each of the plurality of data signal line drive circuits further comprises safety control circuits that control how the voltage generating circuits are driven;
• and
• upon receiving, from the voltage determining circuits, a result of determination indicating that the voltage level does not fall within the range of allowable voltages, the safety control circuits cause operation of the voltage generating circuit corresponding to the data signal line drive circuit in which that safety control circuit is provided to be stopped,
• wherein in a case where in at least one of the data signal line drive circuits the voltage level does not fall within the range of allowable voltages, the voltage determining circuit corresponding to that data signal line drive circuit transmits the result of determination to the safety control circuit of that data signal line drive circuit and to the safety control circuits of all of the other data signal line drive circuits.