Patent ID: 6809706
Filing Date: 2004-10-26
Classification: G09G

Abstract:
A drive circuit which drives a display device with a plurality of pixels arranged as a matrix and luminous elements being provided for the individual pixels, the drive circuit comprising:drive transistors provided for the individual luminous elements and driving said luminous elements, said luminous element and said drive transistor in each of the pixels being serially provided between a first power supply and a second power supply; a first switching transistor provided in each of the pixels for supplying a gate of said drive transistor with a control signal for controlling said drive transistor; and a differential amplifier for comparing a voltage of a connection point between said luminous element and said drive transistor in each of said pixels, and a control voltage input in said differential amplifier and indicating luminance of the pixel, and, thereby generating said control signal, wherein said control signal is supplied for the gate of said drive transistor through said first switching transistor.