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US 11,455,937 B2Granted
Display device
AssigneeSamsung Display Co., Ltd.
InventorHae-Kwan Seo
Life of this patent
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Abstract
A display device includes a display panel, a gate driving block which outputs a scan signal to the display panel, a source driving block which outputs a data signal to the display panel, and a controller. In the low-frequency mode, the controller divides the display panel into a first area operated at a first frequency lower than the reference frequency and a second area operated at a second frequency lower than the first frequency according to the image data, the source driving block outputs the data signal to the first area at the first frequency and outputs the data signal to the second area at the second frequency, and the gate driving block outputs a first scan signal to the first area at the first frequency and outputs a second scan signal to the second area at the second frequency.
Claims15
A display device comprising:
- a display panel which displays an image;
- a gate driving block which outputs a scan signal to the display panel;
- a source driving block which has a normal mode operated at a reference frequency and a low-frequency mode operated at a frequency lower than the reference frequency and outputs a data signal to the display panel;
- and
- a controller which receives image signals and an external control signal and generates a gate driving signal, a masking signal, a source driving signal, and image data in response to the image signals and the external control signal,
- wherein the controller comprises:
- a driving controller which outputs a low-frequency control signal according to the normal mode operated at the reference frequency and the low-frequency mode operated at at least one of a first frequency and a second frequency lower than the reference frequency in response to the image data;
- an area setting unit which divides the display panel into a first area and a second area in response to the low-frequency control signal and the image data and outputs a first control signal to drive the first area at the first frequency and a second control signal to drive the second area at the second frequency;
- and
- a generator which generates the masking signal in response to the first and second control signals, and the controller applies the gate driving signal and the masking signal to the gate driving block;
- wherein the source driving block outputs the data signal to the first area at the first frequency and outputs the data signal to the second area at the second frequency in the low-frequency mode, and
- wherein the gate driving block outputs a first scan signal to the first area at the first frequency and outputs a second scan signal to the second area at the second frequency in the low-frequency mode, and
- wherein a change among the reference frequency, the first frequency of the first scan signal and the second frequency of the second scan signal is controlled by the masking signal.
10 more elements
A display device comprising:
- a display panel which displays an image;
- a gate driving block which outputs a scan signal to the display panel;
- a source driving block which outputs a data signal to the display panel;
- and
- a controller which receives image signals and an external control signal and generates a gate driving signal, a masking signal, a source driving signal, and image data in response to the image signals and the external control signal, wherein the controller comprises:
- an area setting unit which divides the display panel into a reference area and a low-frequency area according to the image data, divides the low-frequency area into a first area and a second area, and outputs a reference control signal to drive the reference area at a reference frequency, a first control signal to drive the first area at a first frequency, and a second control signal to drive the second area at a second frequency;
- and
- a generator which generates the masking signal in response to the reference control signal and the first and second control signals, and the controller applies the gate driving signal and the masking signal to the gate driving block,
- wherein the source driving block outputs the data signal to the reference area at the reference frequency, outputs the data signal to the first area at the first frequency, and outputs the data signal to the second area at the second frequency, and
- wherein the gate driving block outputs a reference scan signal to the reference area at the reference frequency, outputs a first scan signal to the first area at the first frequency, and outputs a second scan signal to the second area at the second frequency, and
- wherein a change among the reference frequency, the first frequency of the first scan signal and the second frequency of the second scan signal is controlled by the masking signal.
8 more elements
Dependencies are inferred from the claim text.