Abstract: A display apparatus is provided. The display apparatus comprises a display unit, a backlight module, an optical cavity and at least one sensing device. The optical cavity is formed between the display unit and the backlight module. The at least one sensing device is disposed on the periphery of the optical cavity for sensing the display unit.

Abstract: A heat exchanger for an electronic device including a light module is provided. The heat exchanger includes an internal heat exchange portion configured to be adjacently attached to the light module. The internal heat exchange portion has at least one internal heat dissipation channel. The internal heat dissipation channel is connected with a device space of the electronic device. A high temperature gas flow generated by the light module is enabled to pass through the device space and the internal heat dissipation channel.

Abstract: A method for sending commands to display devices connected in series includes sending a command to the first display device of N display devices connected in series. The command has a header and each of the N display devices has a same preset identification code. The first display device of N display devices receives the command and determines whether the header is corresponding to the preset identification code. When the header of the command is corresponding to the preset identification code, the first display device executes the command. When header of the command is different from the preset identification code, the first display device generates a modified command by adding an adjustment to the header of the command and sends the modified command to the next display device.

Abstract: A LED light guide lamp includes at least one light source, a light guide member and a heat dissipation member. The light source includes a base and a plurality of LEDs, and the LEDs are in thermal contact with the base. The light guide member includes a light receiving surface, a first light emitting surface, a second light emitting surface and a plurality of light scattering microstructures, and the LEDs are disposed on the light receiving surface. The heat dissipation member is disposed on the second light emitting surface of the light guide member and is in thermal contact with the base of the light source. The heat dissipation member extends along the second light emitting surface. The heat dissipation member is fastened to the base, and the heat dissipation member is spaced apart from the light guide member.

Abstract: A method for sending commands to display devices connected in series includes sending a command to the first display device of N display devices connected in series. The command has a header and each of the N display devices has a same preset identification code. The first display device of N display devices receives the command and determines whether the header is corresponding to the preset identification code. When the header of the command is corresponding to the preset identification code, the first display device executes the command. When header of the command is different from the preset identification code, the first display device generates a modified command by adding an adjustment to the header of the command and sends the modified command to the next display device.

Abstract: An LED control circuit comprises a driver, a counter, and a controller and is configured to control a plurality of light-emitting units, each of which comprises at least one LED and a switch. The driver receives an alternating-current signal to output a driving signal whereby the light-emitting units are enabled. The counter begins a count from a start number when a voltage value of the driving signal equals a base value. When the count reaches a predetermined number, the controller controls the switch of at least one of the light-emitting units, causing the LED of the light-emitting unit to receive the driving signal. When the LED of the light-emitting unit receives the driving signal, the controller detects whether the light-emitting unit is enabled and adjusts the predetermined number accordingly.

Abstract: An LED control circuit comprises a driver, a counter, and a controller and is configured to control a plurality of light-emitting units, each of which comprises at least one LED and a switch. The driver receives an alternating-current signal to output a driving signal whereby the light-emitting units are enabled. The counter begins a count from a start number when a voltage value of the driving signal equals a base value. When the count reaches a predetermined number, the controller controls the switch of at least one of the light-emitting units, causing the LED of the light-emitting unit to receive the driving signal. When the LED of the light-emitting unit receives the driving signal, the controller detects whether the light-emitting unit is enabled and adjusts the predetermined number accordingly.

Abstract: A light-box for illuminating a printed image includes a light source having a plurality of light-emitting sections, a plurality of contrast information, and a programmable light source controller. The plurality of contrast information is determined according to the contents of the printed image, with each piece of contrast information corresponding to one contrast generated by the plurality of light-emitting sections. Thus, the programmable light source controller drives the plurality of light-emitting sections according to the plurality of contrast information in order to generate luminance variations within different durations.