Display device and driving method thereof
View Patent ↗The present invention enhances a display quality of a display device as a task. As means for solving such a task, the present invention provides a display device including a light emitting element and a switching element in a pixel, wherein the switching element is provided for supplying a power source to the light emitting element and is constituted of a first switching element and a second switching element. The first switching element and the second switching element are configured to be operated, in response to inputting of data signals into the inside of the pixel, one switching element assumes a positive bias state and another switching element assumes a reverse bias state, and the bias states are alternately changed over between the first switching element and the second switching element in response to time-sequential inputting of the data signals, and the supply of the power source to the light emitting element is performed by way of either one of the first switching element and the second switching element.
1. A display device including a first data signal and a second data signal which are sequentially inputted to the pixel as data signal, the first data signal and the second data signal having a relationship that the first data signal and the second data signal are inverted from each other and the inversion is repeated time-sequentially, wherein
the pixel includes at least:
a third switching element and a fourth switching element which are driven in response to a signal from a gate signal line;
a first capacitive element in which a charge corresponding to the first data signal is stored by way of the third switching element and a second capacitive element in which a charge corresponding to the second data signal is stored by way of the fourth switching element;
a first switching element which is driven by the charge stored in the first capacitive element and a second switching element which is driven by the charge stored in the second capacitive element; and
a light emitting element to which a power source is supplied through the first switching element or the second switching element.
2. A display device according to claim 1 , wherein the first data signal is inputted through a first data signal line and the second data signal is inputted through a second data signal line.
3. A display device according to claim 1 , wherein the inversion of the first data signal and the second data signal is performed for respective data signals inputted sequentially.
4. A display device according to claim 1 , wherein the first switching element and the second switching element have respective channel regions thereof formed in a zigzag pattern.
5. A display device according to claim 1 , wherein the first switching element and the second switching element are formed on a side below a light emitting layer and one electrode formed above the light emitting layer is formed of a light-transmitting conductive layer.
6. A display device according to claim 1 , wherein both of the first switching element and the second switching element are formed of an N-channel-type switching element.
7. A display device according to claim 1 , wherein both of the first switching element and the second switching element have a semiconductor layer thereof formed of amorphous silicon.