Abstract: An exemplary LED driving method is adapted for driving multiple LED strings. Each of the LED strings includes single one LED or multiple LEDs connected in series. In particular, the LED driving method includes steps of: obtaining an initial value of a duty-on period of a driving current in a frequency period to thereby acquire a target accumulative luminosity in the initial value of the duty-on period for each of the LED strings; and prolonging the duty-on period of the driving current in the frequency period and assuring an accumulative luminosity in the prolonged duty-on period to be substantially equal to the target accumulative luminosity for each of the LED strings, when the maximum one of the initial values of the duty-on periods of the driving currents in the frequency period for the LED strings is shorter than the frequency period.

Abstract: A LED driving method includes steps of: providing a first pulse width modulation (PWM) signal for determining a brightness of a LED; obtaining a duty cycle of the first PWM signal; and selectively enabling the LED to work with a PWM dimming mode or a direct current (DC) dimming mode according to a relative relationship between a magnitude of the obtained duty cycle and a preset threshold value. Since the LED is performed with a two stage brightness control by use of mixed dimming mode, the driving efficiency of the LED can be improved.

Abstract: A light-emitting adjustment method and a display device are provided. The display device includes a voltage source, a light-emitting diode array, a pulse width modulator, a current sensor and a light-emitting adjuster. The voltage source provides an operating voltage. The pulse width modulator provides operating pulse signals to multiple light-emitting diodes arranged in column in order. The current sensor senses a plurality of overall current values of the light-emitting diodes at different timings during the light-emitting diodes are sequentially enabled. The light-emitting adjuster computes an operating current value of each of the light-emitting diodes according to the overall current values and performs a compensation operation based on the operating current value to obtain and output a compensation signal.

Abstract: A light emitting diode driving device and driving method thereof are provided. The light emitting diode driving device includes a duty cycle setup unit, a current setup unit, a control unit, and a light emitting diode driving circuit. The duty cycle setup unit is used for outputting duty cycle setup signal. The current set up unit is used for outputting a current setup signal. The control unit is used for receiving the duty cycle setup signal and the current setup signal, and outputting a current control signal and a duty cycle control signal in response to the duty cycle setup signal and the current setup signal. The light emitting diode driving circuit is used for driving at least one light emitting diode in response to the current control signal and the duty cycle control signal.

Abstract: An exemplary LED driving method is adapted for driving multiple LED strings. Each of the LED strings includes single one LED or multiple LEDs connected in series. In particular, the LED driving method includes steps of: obtaining an initial value of a duty-on period of a driving current in a frequency period to thereby acquire a target accumulative luminosity in the initial value of the duty-on period for each of the LED strings; and prolonging the duty-on period of the driving current in the frequency period and assuring an accumulative luminosity in the prolonged duty-on period to be substantially equal to the target accumulative luminosity for each of the LED strings, when the maximum one of the initial values of the duty-on periods of the driving currents in the frequency period for the LED strings is shorter than the frequency period.

Abstract: A LED driving method includes steps of: providing a first pulse width modulation (PWM) signal for determining a brightness of a LED; obtaining a duty cycle of the first PWM signal; and selectively enabling the LED to work with a PWM dimming mode or a direct current (DC) dimming mode according to a relative relationship between a magnitude of the obtained duty cycle and a preset threshold value. Since the LED is performed with a two stage brightness control by use of mixed dimming mode, the driving efficiency of the LED can be improved.

Abstract: A light emitting diode (LED) backlight module, a driving apparatus and a driving method thereof are provided. The driving apparatus is adapted to drive at least one LED of at least one lighting unit within the LED backlight module. The driving apparatus includes a latch unit and a switch unit. The latch unit is used for receiving a control backlight data and latching the control backlight data during a frame period according to a trigger signal, so as to output a control signal. The switch unit is coupled to the latch unit and the LED for receiving the control signal to determine whether the LED emits or not.

Abstract: An exemplary light-emitting diode (LED) driving circuit includes a LED driving IC, at least a LED string and at least a resistor. The LED string each is electrically coupled between a power source voltage and a control terminal of the LED driving IC and whereby a driving current of the LED string is subjected to the control of the LED driving IC. The resistor each is electrically coupled to between the control terminal and a predetermined potential. Moreover, a LED driving method also is provided.

Abstract: A light emitting diode structure and a light emitting diode structure forming method are provided. The light emitting diode structure includes a base, a diode chip, and a package lens. The diode chip is mounted on the base. The package lens covers the diode chip. The surface of the package lens includes a plurality of dot structures. The steps of the method include mounting a light-emitting diode chip on a base, assembling a package lens to cover the light emitting diodes chip, and forming a plurality of dot structures on the surface of the package lens.

Abstract: A light-emitting adjustment method and a display device are provided. The display device includes a voltage source, a light-emitting diode array, a pulse width modulator, a current sensor and a light-emitting adjuster. The voltage source provides an operating voltage. The pulse width modulator provides operating pulse signals to multiple light-emitting diodes arranged in column in order. The current sensor senses a plurality of overall current values of the light-emitting diodes at different timings during the light-emitting diodes are sequentially enabled. The light-emitting adjuster computes an operating current value of each of the light-emitting diodes according to the overall current values and performs a compensation operation based on the operating current value to obtain and output a compensation signal.

Abstract: A light emitting diode driving device and driving method thereof are provided. The light emitting diode driving device includes a duty cycle setup unit, a current setup unit, a control unit, and a light emitting diode driving circuit. The duty cycle setup unit is used for outputting duty cycle setup signal. The current set up unit is used for outputting a current setup signal. The control unit is used for receiving the duty cycle setup signal and the current setup signal, and outputting a current control signal and a duty cycle control signal in response to the duty cycle setup signal and the current setup signal. The light emitting diode driving circuit is used for driving at least one light emitting diode in response to the current control signal and the duty cycle control signal.

Abstract: A light emitting diode (LED) backlight module, a driving apparatus and a driving method thereof are provided. The driving apparatus is adapted to drive at least one LED of at least one lighting unit within the LED backlight module. The driving apparatus includes a latch unit and a switch unit. The latch unit is used for receiving a control backlight data and latching the control backlight data during a frame period according to a trigger signal, so as to output a control signal. The switch unit is coupled to the latch unit and the LED for receiving the control signal to determine whether the LED emits or not.

Abstract: A light emitting diode structure and a light emitting diode structure forming method are provided. The light emitting diode structure includes a base, a diode chip, and a package lens. The diode chip is mounted on the base. The package lens covers the diode chip. The surface of the package lens includes a plurality of dot structures. The steps of the method include mounting a light-emitting diode chip on a base, assembling a package lens to cover the light emitting diodes chip, and forming a plurality of dot structures on the surface of the package lens.

Abstract: An illuminating device mainly includes a tube-like lamp disposed in a main body. The tube-like lamp has two terminal portions adapted for electrically connecting to a power source and a bending portion between the terminal portions. The main body is provided with a support having two hooked portions configured to support the tube-like lamp. The present invention further provides another tube-like lamp characterized by having a buffer part securely attached on the bending portion for lessening or absorbing the shock of an impact on the tube-like lamp. The support may has a gap between the hooked portions such that the tube-like lamp fit with sufficient tightness into the gap between the hooked portions thereby immobilizing the tube-like lamp more efficiently and absorbing the shock.

Abstract: An illuminating device mainly includes a tube-like lamp disposed in a main body. The tube-like lamp has two terminal portions adapted for electrically connecting to a power source and a bending portion between the terminal portions. The main body is provided with a support having two hooked portions configured to support the tube-like lamp. The present invention further provides another tube-like lamp characterized by having a buffer part securely attached on the bending portion for lessening or absorbing the shock of an impact on the tube-like lamp. The support may has a gap between the hooked portions such that the tube-like lamp fit with sufficient tightness into the gap between the hooked portions thereby immobilizing the tube-like lamp more efficiently and absorbing the shock.