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US 11,694,623 B2Granted
Display device and method for driving the same
AssigneeSamsung Display Co., Ltd.
InventorsKi Hyun Pyun, Hee Sook Park
Life of this patent
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Abstract
A display device may include a display unit, a signal controller, and a sensing unit. The display unit may include pixels. The signal controller may select a first pixel set from the pixel according to ages of the pixels determined based on an image signal. The sensing unit may be electrically connected to each of the display unit and the signal controller and may sense deterioration information of one or more pixels included in the first pixel set for a vertical blank period in which the display unit displays no image.
Claims21
A display device comprising:
- a scan driver for transmitting scan signals to scan lines;
- a gate driver for transmitting gate signals to gate lines;
- a data driver for transmitting data signals to data lines;
- lead lines;
- a sensing unit for receiving currents from the lead lines;
- a display unit including pixels electrically connected to the scan lines, the gate lines, the data lines, and the lead lines;
- and
- a signal controller for controlling at least one of the scan driver, the gate driver, the data driver, and the sensing unit to sense deterioration information of one or more of the pixels and for resetting at least one age associated with a pixel group of the pixels,
- wherein a first scan line among the scan lines is for applying a scan signal for a vertical blank period of a first image frame, a second scan line among the scan lines is for applying a scan signal for a vertical blank period of a second image frame, the second image frame immediately follows the first image frame, and at least one intervening scan line among the scan lines is positioned between the first scan line and the second scan line,
- wherein the pixels are divided into pixel groups, and the signal controller selects the first pixel set as a first pixel group when an average age of the pixels included in the first pixel set is greater than a reference value, and
- wherein, when the sensing unit senses deterioration information of the pixels included in the first pixel group, the signal controller resets the average age of the pixels included in the first pixel group.
8 more elements
A display device comprising:
- a display unit including pixels;
- a signal controller for selecting a first pixel set from the pixels according to ages of the pixels determined based on an image signal and for resetting at least one age associated with the first pixel set;
- and
- a sensing unit electrically connected to each of the display unit and the signal controller for sensing deterioration information of one or more pixels included in the first pixel set for a vertical blank period in which the display unit displays no image,
- wherein the pixels are divided into pixel groups, and the signal controller selects the first pixel set as a first pixel group when an average age of the pixels included in the first pixel set is greater than a reference value, and
- wherein, when the sensing unit senses deterioration information of the pixels included in the first pixel group, the signal controller resets the average age of the pixels included in the first pixel group.
3 more elements
A method for driving a display device, the display device including a display unit, the method comprising:
- receiving an image signal;
- determining ages of pixels included in the display unit based on the image signal;
- selecting a first pixel set from the pixels according to the ages of the pixels;
- sensing, using a sensing unit that is electrically connected to the display unit, deterioration information of one or more pixels included in the first pixel set;
- resetting at least one age associated with the first pixel set;
- dividing the pixels into pixel groups;
- comparing an average age of the pixels included in each of the pixel groups with a reference value;
- selecting the first pixel set as a pixel group when the average age of the pixels included in the first pixel set exceeds the reference value, and
- when the deterioration information of the pixels included in the first pixel group is sensed, resetting the average age of the pixels included in the first pixel group.
6 more elements
Dependencies are inferred from the claim text.