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US 2019/0156758 A1Published application
Display device
AssigneeInnolux Corporation
InventorsLien-Hsiang Chen, Kung-Chen Kuo, Ming-Chun Tseng
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Abstract
A driving device includes a pixel array, a controller and a driver. The driver has a plurality of driving devices. Each of the driving devices includes a plurality of transistors and at least one capacitor to drive a light emitting device. By controlling the timing scheme of control signals applied to the driving device, the voltage for driving the light emitting device would not be affected by threshold voltages of the transistors.
Claims6
A display device, comprising:
- a pixel array;
- a driver, having a plurality of driving devices;
- and
- a controller, generating image signals and transmitting the image signals to the driver to show the image signals on the pixel array;
- each of the driving devices comprising:
- a first transistor having a first terminal coupled to a first node, a second terminal coupled to a second node, and a gate terminal coupled to a third node;
- a second transistor having a first terminal coupled to the first node, a second terminal coupled to the third node, and a gate terminal to receive a first control signal;
- a third transistor having a first terminal coupled to the second node, a second terminal to receive a display signal, and a gate terminal to receive a second control signal;
- a fourth transistor having a first terminal coupled to a fourth node, a second terminal coupled to the second node, and a gate terminal to receive a fourth control signal;
- a fifth transistor having a first terminal coupled to a high voltage signal, a second terminal coupled to the first node, and a gate terminal to receive a third control signal;
- a capacitor having a first terminal coupled to the third node, and a second terminal coupled to the fourth node;
- and
- a light-emitting device having a first terminal coupled to a low voltage signal, and a second terminal coupled to the fourth node.
10 more elements
A display device, comprising:
- a pixel array;
- a driver, having a plurality of driving devices;
- and
- a controller, generating image signals and transmitting the image signals to the driver to show the image signals on the pixel array;
- each of the driving devices comprising:
- a first transistor having a first terminal coupled to a first node, a second terminal coupled to a second node, and a gate terminal coupled to a third node;
- a second transistor having a first terminal coupled to the first node, a second terminal coupled to the third node, and a gate terminal to receive a first control signal;
- a third transistor having a first terminal coupled to the second node, a second terminal to receive a display signal, and a gate terminal to receive a second control signal;
- a fourth transistor having a first terminal coupled to a fourth node, a second terminal coupled to the second node, and a gate terminal to receive a fourth control signal;
- a fifth transistor having a first terminal coupled to a high voltage level, a second terminal coupled to the first node, and a gate terminal to receive a third control signal;
- a first capacitor having a first terminal coupled to the high voltage level, and a second terminal coupled to the third node;
- a second capacitor having a first terminal coupled to the third node, and a second terminal coupled to the fourth node;
- and
- a light-emitting device having a first terminal coupled to a low voltage level and a second terminal coupled to the fourth node.
11 more elements
A display device, comprising:
- a pixel array;
- a driver, having a plurality of driving devices;
- and
- a controller, generating image signals and transmitting the image signals to the driver to show the image signals on the pixel array;
- each of the driving devices comprising:
- a first transistor having a first terminal coupled to a first node, a second terminal coupled to a second node, and a gate terminal coupled to a third node;
- a second transistor having a first terminal coupled to the first node, a second terminal coupled to the third node, and a gate terminal to receive a first control signal;
- a third transistor having a first terminal coupled to the second node, a second terminal to receive a display signal, and a gate terminal to receive a second control signal;
- a fourth transistor having a first terminal coupled to the second node, and a gate terminal to receive a fourth control signal;
- a fifth transistor having a first terminal coupled to a high voltage signal, a second terminal coupled to the first node, and a gate terminal to receive a third control signal;
- a first capacitor having a first terminal coupled to the high voltage signal, and a second terminal coupled to the third node;
- a second capacitor having a first terminal coupled to the third node, and a second
- a light-emitting device having a first terminal coupled to a low voltage signal and a second terminal coupled to a second terminal of the fourth transistor.
10 more elements
Dependencies are inferred from the claim text.