Sensor-equipped display device, control device, and control method

A control device that controls electronic equipment that includes a screen that has a matrix of pixels, a plurality of drive lines arrayed in a direction vertical to rows of the pixels in an area that overlaps with the screen, and detection lines arrayed in a direction vertical to columns of the pixels, the electronic equipment detecting contact or approach of an object with respect to the screen based on signals of the detection lines, the control device comprising:

• a signal acquisition circuit that receives a synchronization signal for controlling a timing at which updating of display of pixels in each row of the screen is started;
• a signal generation circuit that generates a control signal for controlling a driving signal to be output to the drive lines based on the synchronization signal;
• and
• an output circuit that outputs the control signal generated by the signal generation circuit, or the driving signal based on the control signal,
• wherein the signal generation circuit, in a period overlapping with a period for the updating of display of the screen, executes a screen scanning operation for outputting the driving signal to the drive lines, and in the screen scanning operation with respect to the drive lines, generates the control signal so that the driving signal is output, avoiding the drive line in an area corresponding to a row of the pixels being subjected to the updating of display,
• the signal generation circuit controls the outputting of the driving signal according to a synchronization signal for controlling timings of the updating of display, and
• the signal generation circuit stops the outputting of the driving signal at a timing based on the synchronization signal, thereby outputting the driving signal, avoiding the drive line in the area corresponding to the row of the pixels being subjected to the updating of display.

A control method for controlling electronic equipment that includes a screen that has a matrix of pixels, a plurality of drive lines arrayed in a direction vertical to rows of the pixels in an area that overlaps with the screen, and detection lines arrayed in a direction vertical to columns of the pixels, the electronic equipment detecting contact or approach of an object with respect to the screen based on signals of the detection lines, the control method comprising:

• an action of receiving a synchronization signal for controlling a timing at which updating of display of pixels in each row of the screen is started;
• a signal generation action of generating a control signal for controlling a driving signal to be output to the drive lines based on the synchronization signal;
• and
• an outputting action of outputting the control signal generated in the signal generation action, or the driving signal based on the control signal,
• wherein, in the signal generation action, in a period overlapping with a period for the updating of display of the screen, a screen scanning operation for outputting the driving signal to the drive lines is executed, and in the screen scanning operation with respect to the drive lines, the control signal is generated so that the driving signal is output, with the drive line in an area corresponding to a row of the pixels being subjected to the updating of display being avoided,
• in the signal generation action the outputting of the driving signal is controlled according to a synchronization signal for controlling timings of the updating of display, and
• in the signal generation action, the outputting of the driving signal is stopped at a timing based on the synchronization signal, such that the driving signal is outputted, avoiding the drive line in the area corresponding to the row of the pixels being subjected to the updating of display.