JP2017203991A5

JP2017203991A5 -

Info

Publication number: JP2017203991A5
Application number: JP2017121819A
Authority: JP
Filing date: 2017-06-22
Publication date: 2018-03-01
Anticipated expiration: 2033-11-15

Claims

A light emitting element;
A control terminal, a first terminal, and a second terminal, wherein the second terminal is a driving transistor connected to the light emitting element;
A switching transistor connected to the light emitting element;
A light emission control transistor electrically connected to the light emitting element ,
A display device that causes the drive transistor to transition to a conductive state after the switching transistor transitions from a non-conductive state to a conductive state.

The drive transistor controls the supply of current to the light emitting element that emits light according to the amount of current, according to the signal voltage applied to the control terminal,
The display device according to claim 1.

The switching transistor is turned on to form a path that bypasses the light emitting element so that no current is supplied to the light emitting element.
The display device according to claim 1.

By controlling the switching between the conductive state and the non-conductive state in response to the supply of the control signal to the switching transistor via the first signal line, after writing the signal voltage to the control terminal, A controller that controls the switching transistor from the conductive state to the non-conductive state,
The display device according to claim 2.

By providing the first signal line and the second signal line connected to the control terminal so as to be adjacent to each other and run in parallel, the first signal line and the second signal line A capacitance is formed between
The display device according to claim 4.

Said control signal, that is supplied to the control terminal via the capacitor, the potential of the synchronization the control terminal to control the prior SL switching transistor is controlled,
The display device according to claim 5.

The first signal line and the second signal line are respectively provided in different layers adjacent to each other in the multilayer wiring.
The capacitor is formed by arranging the first signal line and the second signal line so as to overlap each other.
The display device according to claim 5.

The first signal line is provided so that the area of the signal line is maximized in a portion overlapping the second signal line.
The display device according to claim 5.

The first signal line and the second signal line are provided as wiring in the same layer,
The capacitor is formed by providing the first signal line and the second signal line so as to run next to each other on the same layer.
The display device according to claim 5.

The first signal line is provided so that the distance between the wirings is the shortest in a portion parallel to the second signal line.
The display device according to claim 5.

A plurality of pixels including the light emitting element, the driving transistor, the switching transistor, and the light emission control transistor;
The control unit controls a potential difference between the control terminal and the second terminal in the driving transistor of each of the plurality of pixels according to light corresponding to the pixel.
The display device according to claim 4.

Of the plurality of pixels, light emitted from the light emitting element in the first pixel is transmitted to the outside through the color filter, and is emitted from the light emitting element in the second pixel different from the first pixel. Irradiated light is output outside without passing through the color filter,
The control unit is configured such that a potential difference between the control terminal and the second terminal in the driving transistor in the second pixel is such that the control terminal and the second terminal in the driving transistor in the first pixel. The potential of the control terminal of the drive transistor of each of the first pixel and the second pixel is controlled to be larger than the potential difference between the first pixel and the second pixel;
The display device according to claim 11.

Among the plurality of pixels, the light emitting element in the first pixel outputs red light, blue light, or green light,
A light emitting element in a second pixel different from the first pixel outputs white light;
The control unit is configured such that a potential difference between the control terminal and the second terminal in the driving transistor in the second pixel is such that the control terminal and the second terminal in the driving transistor in the first pixel. The potential of the control terminal of the drive transistor of each of the first pixel and the second pixel is controlled to be larger than the potential difference between the first pixel and the second pixel;
The display device according to claim 11.

For each of the plurality of pixels, between the signal line through which the control unit supplies a control signal to the switching transistor in the pixel and the signal line connected to the control terminal of the driving transistor in the pixel. A capacitance corresponding to the light corresponding to the pixel is formed,
The control signal is supplied to the control terminal of the driving transistor in the pixel via the capacitance corresponding to each of the plurality of pixels, whereby the potential of the control terminal is controlled.
The display device according to claim 11.