A display panel is disclosed. The display panel may include a plurality of LED elements, and may further include a substrate including a first driving circuit including a pulse width modulation (PWM) driving circuit and a second driving circuit including a pulse amplitude modulation (PAM) driving circuit. The plurality of LED elements may include a first LED element configured to emit light of a first color, and which is controlled by the first driving circuit, and a second LED element configured to emit light of a second color different from the first color, and which is controlled by the second driving circuit.

A controllable lighting device may comprise a drive circuit characterized by one or more cycles and a control circuit configured to control the drive circuit to conduct a load current through a light source of the lighting device. The control circuit may be configured to determine one or more operating parameters of the lighting device during a present cycle of the drive circuit based on a feedback signal indicative of a peak magnitude of the load current conducted through the light source. The control circuit may be able to adjust an average magnitude of the load current conducted through the light source so as to adjust an intensity of the light source towards a target intensity based on the operating parameters.

Systems and methods for applying light to an environment are provided. A system may include an elongate first body having a first side wall, a second side wall opposite the first side wall, and a bottom wall. The first body may define a lengthwise channel between the first side wall and the second side wall. The first body may have a first groove disposed along an inner surface of the first side wall, a second groove disposed along an inner surface of the second side wall, and a cover which may be coupled to the first body via the first groove and the second groove. The first body and the cover may collectively enclose at least a portion of the channel. The system may include an LED disposed within the channel.

Systems and methods for applying light to an environment are provided. A system may include an elongate first body having a first side wall, a second side wall opposite the first side wall, and a bottom wall. The first body may define a lengthwise channel between the first side wall and the second side wall. The first body may have a first groove disposed along an inner surface of the first side wall, a second groove disposed along an inner surface of the second side wall, and a cover which may be coupled to the first body via the first groove and the second groove. The first body and the cover may collectively enclose at least a portion of the channel. The system may include an LED disposed within the channel.

An optical driver circuit is described herein having a plurality of drive cells and delay segments between their control signals resulting in the control of the rising and falling edge rates for an optical device driven by the optical driver circuit.

A display module includes a display panel including an inorganic light emitting element and a pixel circuit configured to provide a driving current to the inorganic light emitting element; and a driver configured to drive the pixel circuit. The pixel circuit includes a pulse amplitude modulation (PAM) circuit configured to control an amplitude of the driving current based on an applied PAM data voltage, and a pulse width modulation (PWM) circuit configured to control a pulse width of the driving current based on an applied PWM data voltage. The driver includes a power supply circuit configured to provide, to the PAM circuit, a first power supply voltage for driving the PAM circuit, and provide, to the PWM circuit, a second power supply voltage for driving the PWM circuit.

A display module includes a display panel including an inorganic light emitting element and a pixel circuit configured to provide a driving current to the inorganic light emitting element; and a driver configured to drive the pixel circuit. The pixel circuit includes a pulse amplitude modulation (PAM) circuit configured to control an amplitude of the driving current based on an applied PAM data voltage, and a pulse width modulation (PWM) circuit configured to control a pulse width of the driving current based on an applied PWM data voltage. The driver includes a power supply circuit configured to provide, to the PAM circuit, a first power supply voltage for driving the PAM circuit, and provide, to the PWM circuit, a second power supply voltage for driving the PWM circuit.

A dimmer switch system for dimming a load includes a master dimmer structured to be electrically connected to a power source and the load and to control dimming of the load by regulating power provided from the power source to the load, and at least one accessory dimmer structured to be electrically connected to the master dimmer via a traveler conductor. The master dimmer includes a first visual load status indicator structured to emit light in a plurality of colors. The at least one accessory dimmer includes a second visual load status indicator structured to emit light in a plurality of colors, and is structured to set a color of light emitted by the second visual load status indicator based on a first control signal generated by the master dimmer on the traveler conductor, and to generate a second control signal on the traveler conductor.

A dimmer switch system for dimming a load includes a master dimmer structured to be electrically connected to a power source and the load and to control dimming of the load by regulating power provided from the power source to the load, and at least one accessory dimmer structured to be electrically connected to the master dimmer via a traveler conductor. The master dimmer includes a first visual load status indicator structured to emit light in a plurality of colors. The at least one accessory dimmer includes a second visual load status indicator structured to emit light in a plurality of colors, and is structured to set a color of light emitted by the second visual load status indicator based on a first control signal generated by the master dimmer on the traveler conductor, and to generate a second control signal on the traveler conductor.

Systems and methods for applying light to an environment are provided. A system may include a plurality of light emitting diode (LED) arrays. Each LED array may include one or more LEDs that are configured to be powered on and off together. The system may be configured such that, during a first timeslot, a pulsed power input is applied to a first LED array, and during a second timeslot, the pulsed power input is applied to the second LED array.