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US 2024/0257679 A1Published application
Display device and driving method thereof
AssigneeLG Display Co., Ltd.
InventorsHyojoon PARK, Mookyiung HONG
Life of this patent
Estimating the term…
Abstract
Embodiments relate to display devices and driving methods thereof. A display device includes a display panel including a sub-pixel arranged thereon and configured to display an image, a power controller configured to supply a reference voltage to the sub-pixel, a sensing circuit configured to sense a voltage of the sub-pixel during a blank time within a frame during the display driving of the image, and a timing controller configured to detect a defect of the display panel based on the voltage sensed during the display driving.
Claims21
A display device comprising:
- a display panel including a sub-pixel arranged thereon and configured to display an image;
- a power controller that, in operation, supplies a reference voltage to the sub-pixel;
- a sensing circuit that, in operation, senses a voltage of the sub-pixel during a blank time within a frame during display driving of the image;
- and
- a timing controller that, in operation, detects a defect of the display panel based on the voltage sensed during the display driving.
2 more elements
A method, comprising:
- driving a display device operating with a frame including an active time for displaying an image and a blank time following the active time;
- performing primary detecting of a defect of a display panel by supplying a reference voltage to a sub-pixel during the blank time and performing a first sensing of a voltage of the sub-pixel during the supplying a reference voltage;
- and
- performing secondary detecting of the defect of the display panel by stopping supply of the reference voltage and performing a second sensing of the voltage of the sub-pixel during the stopping supply.
1 more element
A display device, comprising:
- a display panel including a sub-pixel arranged thereon;
- a reference voltage line associated with the sub-pixel;
- a power controller that, in operation, supplies a reference voltage;
- a sensing circuit that, in operation, senses a voltage on the reference voltage line;
- a first switch that, in operation:
- in a first detection period, connects the reference voltage line to the power controller to charge the reference voltage line by the reference voltage;
- and
- in a second detection period following the first detection period, disconnects the reference voltage line from the power controller;
- a second switch that, in operation, in the first and second detection periods, connects the reference voltage line to the sensing circuit in response to a sampling signal;
- and
- a timing controller that, in operation, detects a defect of the sub-pixel based at least one of:
- a first sensing voltage generated by sampling the voltage on the reference line by the sensing circuit in the first detection period;
- and
- a second sensing voltage generated by sampling the voltage on the reference line by the sensing circuit in the second detection period.
11 more elements
Dependencies are inferred from the claim text.