Self-luminous display device and driving method of the same
First Claim
1. A self-luminous display device comprising:
- pixel circuits; and
a drive circuit, whereineach of the pixel circuits includes a light-emitting diode, a drive transistor connected to a drive current path of the light-emitting diode, and a holding capacitor coupled to a control node of the drive transistor,during a period in which at least actual threshold voltage and mobility corrections are performed on the drive transistor before the light-emitting diode can emit light, the drive circuit performs a preliminary threshold voltage correction of the drive transistor, i.e., a dummy Vth correction, with the light-emitting diode in a non-light emitting state,the drive circuit next performs a correction preparation for a constant period by reverse-biasing the light-emitting diode and initializing the voltage held by the holding capacitor, andthe drive circuit performs the actual threshold voltage correction and mobility correction after the correction preparation.
5 Assignments
0 Petitions
Accused Products
Abstract
Disclosed herein is a self-luminous display device including: pixel circuits; and a drive circuit, wherein each of the pixel circuits includes a light-emitting diode, a drive transistor connected to a drive current path of the light-emitting diode, and a holding capacitor coupled to a control node of the drive transistor, during a period in which at least actual threshold voltage and mobility corrections are performed on the drive transistor before the light-emitting diode can emit light, the drive circuit performs a preliminary threshold voltage correction of the drive transistor, i.e., a dummy Vth correction, with the light-emitting diode in a non-light emitting state, the drive circuit next performs a correction preparation for a constant period by reverse-biasing the light-emitting diode and initializing the voltage held by the holding capacitor, and the drive circuit performs the actual threshold voltage correction and mobility correction after the correction preparation.
-
Citations
10 Claims
-
1. A self-luminous display device comprising:
-
pixel circuits; and a drive circuit, wherein each of the pixel circuits includes a light-emitting diode, a drive transistor connected to a drive current path of the light-emitting diode, and a holding capacitor coupled to a control node of the drive transistor, during a period in which at least actual threshold voltage and mobility corrections are performed on the drive transistor before the light-emitting diode can emit light, the drive circuit performs a preliminary threshold voltage correction of the drive transistor, i.e., a dummy Vth correction, with the light-emitting diode in a non-light emitting state, the drive circuit next performs a correction preparation for a constant period by reverse-biasing the light-emitting diode and initializing the voltage held by the holding capacitor, and the drive circuit performs the actual threshold voltage correction and mobility correction after the correction preparation. - View Dependent Claims (2, 3, 4, 5, 6)
-
-
7. A driving method of a self-luminous display device, the self-luminous display device including pixel circuits, each of the pixel circuits including a light-emitting diode, a drive transistor connected to a drive current path of the light-emitting diode, and a holding capacitor coupled to a control node of the drive transistor, the driving method comprising:
-
a non-light emission setting step of setting the light-emitting diode to a non-light emitting state; a dummy Vth correction step of performing a preliminary threshold voltage correction of the drive transistor; a correction preparation step of reverse-biasing the light-emitting diode and initializing the voltage held by the holding capacitor; an actual threshold voltage correction step of performing a threshold voltage correction of the drive transistor; a mobility correction step of performing a mobility correction of the drive transistor by writing a data potential to the pixel circuit; and a light emission setting step of forward-biasing the light-emitting diode to emit light according to the written data potential. - View Dependent Claims (8, 9, 10)
-
Specification