Image display device
An image display device includes a plurality of pixels, and feeders that commonly supply power to the plurality of pixels. In this image display device, each of the pixels has a light-emitting portion that emits light by a current supplied to the light-emitting portion, a driver that controls light emission of the light-emitting portion, and a switching portion electrically connected to the driver. The parasitic capacitance of the switching portion is determined with respect to each one pixel or one group of pixels according to the voltage drop of said feeder.
1. An image display device comprising:
a plurality of pixels; and
a feeder that commonly supplies power to said plurality of pixels, each of said pixels including:
a light-emitting portion that emits light by a current being supplied to said light-emitting portion;
a driver that controls light emission of said light-emitting portion;
a switching portion electrically connected to said driver, wherein a parasitic capacitance of said switching portion is determined with respect to each one pixel or one group of pixels according to a voltage drop of said feeder; and
a second switching portion electrically connected to said driver and said switching portion,
wherein said driver has a first terminal, a second terminal, and a third terminal, said first terminal controlling the current flowing between said second terminal and said third terminal, said switching portion has a fourth terminal, a fifth terminal, and a sixth terminal, said fourth terminal controlling the current flowing between said fifth terminal and said sixth terminal, and
wherein said second terminal is directly connected to said light-emitting portion during light emission of said light-emitting portion, said fifth terminal is directly connected to said second terminal, and said sixth terminal is directly connected to said first terminal, and said control line is electrically connected to said fourth terminal.
2. An image display device comprising:
a plurality of pixels; and
a feeder that commonly supplies power to said plurality of pixels, each of said pixels including:
a light-emitting portion that emits light by a current being supplied to said light-emitting portion;
a driver that controls light emission of said light-emitting portion;
a capacitance element electrically connected to said driver, wherein a capacitance of said capacitance element is determined with respect to each one pixel or one group of pixels according to a voltage drop of said feeder;
a switching portion electrically connected to said driver; and
a second switching portion electrically connected to said driver and said switching portion,
wherein said driver has a first terminal, a second terminal, and a third terminal, said first terminal controlling the current flowing between said second terminal and said third terminal, said switching portion has a fourth terminal, a fifth terminal, and a sixth terminal, said fourth terminal controlling the current flowing between said fifth terminal and said sixth terminal, and
wherein said second terminal is directly connected to said light-emitting portion during light emission of said light-emitting portion, said fifth terminal is directly connected to said second terminal, and said sixth terminal is directly connected to said first terminal, and said control line is electrically connected to said fourth terminal.
3. An image display device comprising:
a plurality of pixels;
a feeder that commonly supplies power to said plurality of pixels;
a control line electrically connected to each of said pixels; and
a drive circuit portion that sets a voltage with respect to each one pixel or one group of pixels of said control line according to a voltage drop of said feeder, each of said pixels including:
a light-emitting portion that emits light by a current being supplied to said light-emitting portion;
a driver that controls light emission of said light-emitting portion;
a switching portion electrically connected to said control line; and
a second switching portion electrically connected to said driver and said switching portion,
wherein said driver has a first terminal, a second terminal, and a third terminal, said first terminal controlling the current flowing between said second terminal and said third terminal, said switching portion has a fourth terminal, a fifth terminal, and a sixth terminal, said fourth terminal controlling the current flowing between said fifth terminal and said sixth terminal, and
wherein said second terminal is directly connected to said light-emitting portion during light emission of said light-emitting portion, said fifth terminal is directly connected to said second terminal, and said sixth terminal is directly connected to said first terminal, and said control line is electrically connected to said fourth terminal.
4. The image display device according to claim 2 , wherein said capacitance element temporarily holds an image data voltage.
5. The image display device according to claim 3 ,
further comprising a capacitance element that is electrically connected to said driver, and that temporarily holds an image data voltage applied to said driver,
wherein said switching portion is electrically connected to said capacitance element and controls a timing for supplying said image data voltage to said capacitance element.
6. The image display device according to claim 1 ,
wherein said plurality of pixels are arranged in a matrix, the image display device further comprising a power supply line commonly connected to each one of said light emitting portion in the plurality of pixels arranged in a row direction, and
wherein said feeder is disposed along a direction approximately orthogonal to said power supply line and is electrically connected to said power supply line at a point crossing said power supply line.
7. The image display device according to claim 6 , wherein the plurality of said pixels are grouped as a pixel group according to the voltage drop of said feeder, and the parasitic capacitance of said switching portion differs from one said pixel group to another.
8. The image display device according to claim 2 ,
wherein said plurality of pixels are arranged in a matrix,
the image display device further comprising a power supply line commonly connected to each one of said light emitting portion in the plurality of pixels arranged in a row direction, and
wherein said feeder is disposed along a direction approximately orthogonal to said power supply line and is electrically connected to said power supply line at a point crossing said power supply line.
9. The image display device according to claim 8 , wherein the plurality of said pixels are grouped as a pixel group according to the voltage drop of said feeder, and the capacitance of said capacitance element differs from one said pixel group to another.
10. The image display device according to claim 3 , wherein said plurality of pixels are arranged in a matrix, the image display device further comprising a power supply line commonly connected to each one of said light emitting portion in the plurality of pixels arranged in a row direction, and
wherein said feeder is disposed along a direction approximately orthogonal to said power supply line and is electrically connected to said power supply line at a point crossing said power supply line.
11. An image display device comprising:
a plurality of pixels;
a feeder that commonly supplies power to said plurality of pixels; and
a control line electrically connected to each of said pixels, each of said pixels including:
a light-emitting portion that emits light by a current being supplied to said light-emitting portion;
a driver that has a first terminal, a second terminal, and a third terminal, said first terminal controlling a current flowing between said second terminal and said third terminal, and that controls light emission of said light-emitting portion;
a switching portion that has a fourth terminal, a fifth terminal, and a sixth terminal, said fourth terminal controlling a current flowing between said fifth terminal and said sixth terminal, and that is electrically connected to said control line; and
an additional capacitor electrically connected to said fourth terminal and said sixth terminal, wherein:
said second terminal is directly connected to said light-emitting portion during light emission of said light-emitting portion;
said fifth terminal is directly connected to said second terminal;
said sixth terminal is directly connected to said first terminal;
said control line is electrically connected to said fourth terminal; and
a capacitance of said additional capacitor differs from each one pixel or one group of pixels depending on an amount of voltage drop of said feeder.