LED array display unit, display screen and display system
AssigneeHkc Corporation Limited
InventorsMancheng Zhou, Haijiang Yuan
Life of this patent
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Abstract
Provided are a light emitting diode (LED) array display unit, a display screen, and a display system. The LED array display unit includes a plurality of light emitting diodes, and in each row of the LED array display unit, two compensation units connected in parallel are provided between any two adjacent light emitting diodes. Each compensation unit includes an adjustable capacitor and a reverse unit connected in series. A capacitance value of a parasitic capacitor between any two adjacent light emitting diodes is a first capacitance value, and capacitance values of all adjustable capacitors are set to the first capacitance value. Two reverse units between any two adjacent light emitting diodes have opposite conduction directions.
Claims19
A light emitting diode (LED) array display unit, comprising:
- a first compensation unit and a second compensation unit connected in parallel and provided between any two adjacent light emitting diodes in each row of the LED array display unit, the first compensation unit comprising a first adjustable capacitor and a first reverse unit that are connected in series, and the second compensation unit comprising a second adjustable capacitor and a second reverse unit that are connected in series;
- wherein a capacitance value of a parasitic capacitor between two adjacent light emitting diodes is a first capacitance value, and capacitance values of the first adjustable capacitor and the second adjustable capacitor are set to the first capacitance value;
- and
- wherein the first reverse unit and the second reverse unit have opposite conduction directions.
A light emitting diode (LED) display screen, comprising:
- at least one LED array display unit, and each LED array display unit comprising:
- a plurality of light emitting diodes;
- a first compensation unit and a second compensation unit connected in parallel and provided between any two adjacent light emitting diodes in each row of the LED array display unit, the first compensation unit comprising a first adjustable capacitor and a first reverse unit that are connected in series, and the second compensation unit comprising a second adjustable capacitor and a second reverse unit that are connected in series;
- wherein a capacitance value of a parasitic capacitor between two adjacent light emitting diodes is a first capacitance value, and capacitance values of the first adjustable capacitor and the second adjustable capacitor are set to the first capacitance value;
- and
- wherein the first reverse unit and the second reverse unit have opposite conduction directions;
- a row drive unit, configured to control the LED array display unit to switch a row based on a row switch level signal;
- and
- a column drive unit, configured to generate a pulse width modulation (PWM) signal according to grayscale data, wherein the PWM signal is configured to control the plurality of light emitting diodes in the LED array display unit to light up or switch off.
A light emitting diode (LED) display system, comprising:
- an LED display screen, comprising:
- at least one LED array display unit, and each LED array display unit comprising:
- a plurality of light emitting diodes;
- a first compensation unit and a second compensation unit connected in parallel and provided between any two adjacent light emitting diodes in each row of the LED array display unit, the first compensation unit comprising a first adjustable capacitor and a first reverse unit that are connected in series, and the second compensation unit comprising a second adjustable capacitor and a second reverse unit that are connected in series;
- wherein a capacitance value of a parasitic capacitor between two adjacent light emitting diodes is a first capacitance value, and capacitance values of the first adjustable capacitor and the second adjustable capacitor are set to the first capacitance value;
- and
- wherein the first reverse unit and the second reverse unit have opposite conduction directions;
- a row drive unit, configured to control the LED array display unit to switch a row based on a row switch level signal;
- and
- a column drive unit, configured to generate a pulse width modulation (PWM signal according to grayscale data, wherein the PWM signal is configured to control the plurality of light emitting diodes in the LED array display unit to light up or switch off;
- a data processor, connected to the LED display screen;
- a power supply module, connected to the LED display screen, and configured to supply power to the LED display screen;
- and
- an image source, connected to the data processor, and configured to send a display image to the data processor;
- wherein the data processor is configured to receive the display image and generate grayscale data according to the display image, and send the grayscale data to the LED display screen;
- and
- the LED display screen is configured to receive the grayscale data and display an image according to the grayscale data.
Dependencies are inferred from the claim text.