Color image display device, method of driving the same, and electronic equipment

An active matrix display device comprising:

• at least first, second and third source signal lines;
• a D/A conversion circuit;
• a source line selecting circuit for selectively connecting one of the first, second and third source signal lines to the D/A conversion circuit;
• a gray-scale power supply line electrically connected to the D/A conversion circuit;
• a first pixel electrode for a first color electrically connected to the first source signal line;
• a second pixel electrode for a second color electrically connected to the second source signal line;
• and
• a third pixel electrode for a third color electrically connected to the third source signal line,
• wherein the first, second and third colors are different from one another.

An active matrix display device comprising:

• at least first, second and third source signal lines;
• a first D/A conversion circuit;
• a first source line selecting circuit for selectively connecting one of the first, second and third source signal lines to the first D/A conversion circuit;
• a first pixel electrode for a first color electrically connected to the first source signal line;
• a second pixel electrode for a second color electrically connected to the second source signal line;
• a third pixel electrode for a third color electrically connected to the third source signal line, wherein the first, second and third colors are different from one another;
• at least fourth, fifth and sixth source signal lines;
• a second D/A conversion circuit;
• a second source line selecting circuit for selectively connecting one of the fourth, fifth and sixth source signal lines to the second D/A conversion circuit;
• a gray-scale power supply line electrically connected to the first and second D/A conversion circuits;
• a fourth pixel electrode for the first color electrically connected to the fourth source signal line;
• a fifth pixel electrode for the second color electrically connected to the fifth source signal line;
• a sixth pixel electrode for the third color electrically connected to the sixth source signal line.

An active matrix display device comprising:

• at least first, second and third source signal lines formed over a substrate;
• a D/A conversion circuit formed over the substrate;
• a source line selecting circuit formed over the substrate for selectively connecting one of the first, second and third source signal lines to the D/A conversion circuit;
• a gray-scale power supply line electrically connected to the D/A conversion circuit;
• a first pixel electrode formed over the substrate for a first color electrically connected to the first source signal line;
• a second pixel electrode formed over the substrate for a second color electrically connected to the second source signal line;
• and
• a third pixel electrode formed over the substrate for a third color electrically connected to the third source signal line,
• wherein the first, second and third colors are different from one another, and
• wherein each of the D/A conversion circuit and the source line selecting circuit comprises a thin film transistor formed over the substrate.

A driving method of an active matrix display device comprising:

• during a first gate line selecting period, supplying a first digital picture signal for a first color to a D/A conversion circuit and supplying a first voltage to the D/A conversion circuit through a gray-scale power supply line in order to supply a first signal to a first source signal line from the D/A conversion circuit;
• during a second gate line selecting period after the first gate line selecting period, supplying a second digital picture signal for a second color to the D/A conversion circuit and supplying a second voltage to the D/A conversion circuit through the gray-scale power supply line in order to supply a second signal to a second source signal line from the D/A conversion circuit;
• during a third gate line selecting period after the second gate line selecting period, supplying a third digital picture signal for a third color to the D/A conversion circuit and supplying a third voltage to the D/A conversion circuit through the gray-scale power supply line in order to supply a third signal to a third source signal line from the D/A conversion circuit,
• wherein the first, second and third source signal lines are electrically connected to the D/A conversion circuit through a source line selecting circuit.