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US 11,887,544 B2Granted
Display device and electronic device having the same
AssigneeSamsung Display Co., Ltd.
InventorsYanguk Nam, Dae-Sik Lee
Life of this patent
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Abstract
A display device includes a display panel including a plurality of pixels, a data driver configured to provide a data signal to the pixels, a scan driver configured to provide a scan signal to the pixels, a power controller configured to provide a driving voltage to the data driver and the scan driver, and a timing controller configured to generate a data control signal that controls the data driver, a scan control signal that controls the scan driver, and a power control signal that controls the power controller based on an image data and a control signal. The power controller determines a transient time that changes the driving voltage from a first voltage level to a second voltage level based on the power control signal.
Claims19
A display device comprising:
- a display panel comprising a plurality of pixels;
- a data driver configured to provide a data signal to the plurality of pixels;
- a scan driver configured to provide a scan signal to the plurality of pixels;
- a power controller configured to provide a driving voltage to the data driver and the scan driver, the driving voltage comprising:
- an analog driving voltage, and at least one of a gamma voltage or a common voltage;
- and
- a timing controller configured to generate a data control signal to control the data driver, a scan control signal to control the scan driver, and a power control signal to control the power controller based on an image data and a control signal,
- wherein the power controller is configured to determine a transient time of the gamma voltage and the common voltage based on a peripheral temperature of the display device, a transient time of the analog driving voltage being determined considering an inrush current of the display device, wherein the transient time of the analog driving voltage starts when a driving frequency of the display device changes from a first frequency to a second frequency and during which the driving voltage is changed from a first voltage level to a second voltage level based on the power control signal, wherein an image with luminance is to be displayed during an entire duration of the transient time of the analog driving voltage, and wherein the driving voltage remains at the first voltage level prior to a starting point of the transient time of the analog driving voltage and remains at the second voltage level from an end point of the transient time of the analog driving voltage until a starting point of a next transient time of the analog driving voltage, and
- wherein the power controller is further configured to determine a transient speed of the analog driving voltage and a transient speed of the common voltage when the image data comprises a set pattern, wherein the set pattern is to consume more power than a set power consumption of the display device, wherein the transient speed of the analog driving voltage and the transient speed of the common voltage are equal.
6 more elements
An electronic device comprising a display device and a processor to control the display device, the display device comprising:
- a display panel including a plurality of pixels;
- a data driver configured to provide a data signal to the pixels;
- a scan driver configured to provide a scan signal to the pixels;
- a power controller configured to provide a driving voltage to the data driver and the scan driver, the driving voltage comprising:
- an analog driving voltage, and at least one of a gamma voltage or a common voltage;
- and
- a timing controller configured to generate a data control signal to control the data driver, a scan control signal to control the scan driver, and a power control signal to control the power controller based on an image data and a control signal, and
- wherein the power controller is configured to determine a transient time of the gamma voltage and the common voltage based on a peripheral temperature of the display device, a transient time of the analog driving voltage being determined considering an inrush current of the display device, wherein the transient time of the analog driving voltage starts when a driving frequency of the display device changes from a first frequency to a second frequency and during which the driving voltage is changed from a first voltage level to a second voltage level based on the power control signal, wherein an image with luminance is to be displayed during an entire duration of the transient time of the analog driving voltage, and wherein the driving voltage remains at the first voltage level prior to a starting point of the transient time of the analog driving voltage and remains at the second voltage level from an end point of the transient time of the analog driving voltage until a starting point of a next transient time of the analog driving voltage, and
- wherein the power controller is further configured to determine a transient speed of the analog driving voltage and a transient speed of the common voltage when the image data comprises a set pattern, wherein the transient speed of the analog driving voltage and the transient speed of the common voltage are equal, and wherein the set pattern is to consume more power than a set power consumption of the display device.
6 more elements
Dependencies are inferred from the claim text.