Display driving circuit and display device including the same
AssigneeSamsung Electronics Co., Ltd.
InventorsSeong Min Cheon, Dong Wook Suh, Ji Hyun Lee
Life of this patent
Estimating the term…
Abstract
A display driving circuit and a display device including the same are provided. The display driving circuit includes a source driver which applies source data to a display panel, a power supply unit which receives an external voltage from a power module to generate an internal voltage and a logic unit which is supplied with the internal voltage to control the source driver, wherein the logic unit includes a voltage variable determination logic which determines whether a supply voltage including the internal voltage and the external voltage is changed, thereby generating a voltage variable signal, and a voltage control logic which receives the voltage variable signal to change the supply voltage.
Claims20
A display driving circuit comprising:
- a source driver configured to apply source data to a display panel;
- a power supply configured to receive an external voltage from an interface (I/F) of a power module, and to generate an internal voltage;
- and
- processing circuitry configured to,
- determine whether to change a supply voltage associated with the display driving circuit, the supply voltage including one or more of the internal voltage and the external voltage, and
- output a voltage change signal if the processing circuitry determines to change the supply voltage.
A display device comprising:
- a display panel configured to display source data;
- a power module including an interface (I/F) configured to provide an external voltage to the display device;
- and
- a display driving circuit including,
- a power supply configured to receive the external voltage from the power module to generate an internal voltage, and
- processing circuitry configured to,
- determine whether to change the internal voltage generated by the power supply or the external voltage provided to the power supply, and
- transmit the source data and a gate signal to the display panel to drive the display panel.
A display driving circuit comprising:
- a source driver configured to apply source data to a display panel, the source data corresponding to image data;
- a power supply configured to receive an external voltage from an interface (I/F) of a power module to generate an internal voltage;
- a clock generator configured to generate a clock having a frame frequency;
- and
- processing circuitry configured to,
- receive the internal voltage, the clock and the image data,
- determine whether to change one or more of the internal voltage and the external voltage based on at least one of a command, the image data, and the frame frequency of the clock,
- output a voltage change signal to change one or more of the internal voltage and the external voltage in response to the processing circuitry determining to change one or more of the internal voltage and the external voltage.
Dependencies are inferred from the claim text.