Display apparatus and method of driving the same
AssigneeSamsung Electronics Co., Ltd.
InventorsTae-Jong Jun, Jongseo Lee, Jooyoung Lee, Soo-Lin Kim, Jung-Suk Han
Life of this patent
Estimating the term…
Abstract
A display apparatus includes a display panel which receives a light, a backlight which provides the light to the display panel in response to a driving voltage, and a backlight driver which applies the driving voltage to the backlight. The backlight is turned on and off during a communication period to transmit data to an external receiver using visible light communication during the communication period. The backlight driver controls a voltage level of the driving voltage according to a number of turn-on periods of the driving voltage during the communication period.
Claims21
A display apparatus comprising:
- a display panel which receives a light;
- a backlight which provides the light to the display panel in response to a driving voltage, the backlight being turned on and off during a communication period to transmit data to an external receiver using visible light communication during the communication period;
- and
- a backlight driver which controls a voltage level of the driving voltage according to a number of turn-on periods of the driving voltage during the communication period and supplies the driving voltage to the backlight.
A display apparatus comprising:
- a display panel which receives a light;
- a backlight which provides the light to the display panel in response to a first driving voltage and a second driving voltage, the backlight comprising:
- a first light source which is turned on and off during a communication period to transmit data to an external receiver using visible light communication during the communication period;
- and
- a second light source which compensates a brightness of the first light source;
- and
- a backlight driver which controls the second driving voltage according to a number of turn-on periods of the first driving voltage during the communication period and supplies the second driving voltage to the second light source.
A display apparatus comprising:
- a display panel which receives a light;
- a backlight which provides the light to the display panel in response to a driving voltage, the backlight being turned on and off during a communication period to transmit data to an external receiver using visible light communication during the communication period, the communication period including a data period, during which the data is transmitted to the external receiver, and a brightness compensation period, during which a brightness of the light is compensated;
- and
- a backlight driver which controls the driving voltage during the brightness compensation period according to a number of turn-on periods of the driving voltage in the data period and applies the driving voltage to the backlight.
A display apparatus comprising:
- a display panel which receives a light;
- a backlight which provides the light to the display panel in response to a driving voltage, the backlight being turned on and off during a communication period to transmit data to an external receiver using visible light communication during the communication period;
- and
- a backlight driver which drives the backlight during the communication period in one of a first mode during which the driving voltage has a first duty ratio and a second mode during which the driving voltage has a second duty ratio less than the first duty ratio,
- wherein the backlight driver controls a voltage level of the driving voltage such that the voltage level of the driving voltage is inversely proportional to the second duty ratio.
A method of driving a display apparatus including a display panel, a backlight and a backlight driver, the method comprising:
- providing light to the display panel from the backlight in response to a driving voltage;
- turning the backlight on and off during a communication period to transmit data to an external receiver using visible light communication during the communication period;
- and
- controlling a voltage level of the driving voltage with the backlight driver according to a number of turn-on periods of the driving voltage during the communication period.
A method of driving a display apparatus including a display panel, a backlight having a first light source and a second light source, and a backlight driver, the method comprising:
- providing the backlight to the display panel in response to a first driving voltage and a second driving voltage;
- turning the first light source on and off during a communication period to transmit data to an external receiver using visible light communication during the communication period;
- compensating a brightness of the first light source using the second light source;
- and
- controlling the second driving voltage according to a number of turn-on periods of the first driving voltage during the communication period.
A method of driving a display apparatus including a display panel, a backlight and a backlight driver, the method comprising:
- providing light to the display panel in response to a driving voltage;
- transmitting data to an external receiver using visible light communication by turning on and off the backlight during a communication period, the communication period including a data period, during which the data is transmitted to the external receiver, and a brightness compensation period, during which a brightness of the light is compensated;
- and
- controlling the driving voltage during the brightness compensation period according to a number of turn-on periods of the driving voltage in the data period.
A method of driving a display apparatus including a display panel, a backlight and a backlight driver, the method comprising:
- providing a light to the display panel in response to a driving voltage;
- transmitting data to an external receiver using visible light communication by turning on and off the backlight during a communication period;
- driving the backlight during the communication period in one of a first mode during which the driving voltage has a first duty ratio and a second mode during which the driving voltage has a second duty ratio less than the first duty ratio;
- and
- controlling a voltage level of the driving voltage such that the voltage level of the driving voltage is inversely proportional to the second duty ratio.
Dependencies are inferred from the claim text.