US 8,576,146 B2Granted

Display device and driving method thereof

AssigneeSamsung Display Co., Ltd.

InventorsSoon-Ryong Park, Shingo Kawashima, Hee-Seong Jeong, Woo-Suk Jung, Gun-Shik Kim, Jae-Shin Kim, Joo-Hwa Lee, Jun-Sik Oh

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Abstract

A display device and a driving method thereof for easily determining photographing timing and recognizing text by improving field visibility. The display device includes: a signal controller generating image data and an image control signal in accordance with an input signal; and a display unit including scan lines transmitting scan signals, data lines transmitting data signals, and pixels connected to the scan lines and data lines and displaying an image corresponding to the image data. Here, when the input signal is an image signal for displaying a photographed image or text, the signal controller generates the image data to correspond to a unit frame period composed of frames as weighted image data corresponding to one of the frames, and the display device displays an image corresponding to the weighted image data to have an energy proportional to a number of the frames in the unit frame period.

Claims16

Dependent claims

A display device, comprising:

a signal controller for generating image data and an image control signal in accordance with an input signal;
and
a display unit comprising a plurality of scan lines for transmitting a plurality of scan signals, a plurality of data lines for transmitting a plurality of data signals, and a plurality of pixels connected to the plurality of scan lines and the plurality of data lines and configured to display an image corresponding to the image data,
wherein when the input signal is an image signal for displaying a photographed image or text, the signal controller is configured to generate the image data to correspond to a unit frame period composed of a plurality of frames as weighted image data corresponding to one frame period of the plurality of frames,
wherein the display device is configured to display an image corresponding to the weighted image data to have an energy proportional to a number of the plurality of frames in the unit frame period,
wherein an image control signal comprises a scan start signal for controlling a timing of when the plurality of scan signals start to be applied to the plurality of scan lines, and
wherein the signal controller is configured to decrease a frequency of the scan start signal during a period when a camera driving signal is applied at a ratio that is inversely proportional to the number of the plurality of frames in the unit frame period in comparison with a frequency during a general operation period when the camera driving signal is not applied.

4 more elements

A driving method of a display device including a plurality of scan lines for transmitting a plurality of scan signals, a plurality of data lines for transmitting a plurality of data signals, and a plurality of pixels connected to the plurality of scan lines and the plurality of data lines and configured to display an image corresponding to image data, wherein the method comprises generating the image data and an image control signal in accordance with an input signal, the generating of the image data and the image control signal comprising:

when the input signal is an image signal for displaying a photographed image or text, generating the image data corresponding to a unit frame period composed of a plurality of frames as weighted image data corresponding to one frame period of the plurality of frames;
increasing an energy of an image of the display device corresponding to the weighted image data in proportion to a number of the plurality of frames in the unit frame period,
wherein the generating of the weighted image data comprises generating a scan start signal for controlling a timing of when the plurality of scan signals start to be applied to the plurality of scan lines in synchronization with a camera driving signal;
and
decreasing a frequency of the scan start signal during a period when the camera driving signal is applied at a ratio that is inversely proportional to the number of the plurality of frames in the unit frame period in comparison with a frequency during a general operation period when the camera driving signal is not applied.

2 more elements

Dependencies are inferred from the claim text.