| Patent application number | Description | Published |
|---|
| 20090153075 | COLOR CONTROL METHOD FOR LED LIGHTING SYSTEMS - When temperature variation occurs to the LED dice of an LED lighting system, a feedback control mechanism is applied to compensate temperature-related wavelength shift for precisely controlling the light generated by the LED dice based on the voltage drop variation or current variation of the LED dice. The color control method for the LED lighting system includes a preliminary detection phase and a feedback control phase. In the preliminary detection phase, voltage drop signals or current signals together with corresponding color and hue signals of each LED module of the LED lighting system are detected. In the feedback control phase, signal compensating processes are performed to precisely control the light generated by the LED lighting system based on the voltage drop variation or the current variation in conjunction with the corresponding color and hue signals generated in the preliminary detection phase. | 06-18-2009 |
| 20100044732 | Light Emitting Diode Structure and Method of Forming the Same - 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. | 02-25-2010 |
| 20100128195 | Backlight Module and Liquid Crystal Display Device Using the Same - The present invention is a backlight module including a housing, a reflective sheet, and a light source module. The housing has an inner side surface, an outer side surface, and a plurality of first openings. The reflective sheet is disposed on the inner side surface and has a plurality of second openings corresponding to the first openings. The light source module has a plurality of light sources, wherein the light source module is disposed on the outer side surface, and each of the light sources may penetrate each of the first openings and the second openings. When the light sources are dimmed or have other problems, the light source module can be taken apart from the housing to repair them easily. | 05-27-2010 |
| 20100141154 | BACKLIGHT MODULE AND METHOD OF CONTROLLING THE LUMINANCE OF THE BACKLIGHT MODULE - A backlight module includes a plurality of light sources, a photo-sensor, and a control circuit. Each light source of the plurality of light sources can operate independently. The photo-sensor detects the luminance of the plurality of light sources to generate a luminance signal. The control circuit drives the plurality of light sources according to the luminance signal. When the backlight module is used in a scanning backlight LCD, the control circuit turns off parts of the plurality of light sources according to a display signal. When all of the plurality of light sources is turned on, the control circuit obtains the luminance signal so as to adjust the luminance of the backlight module according to the luminance signal. | 06-10-2010 |
| 20110084621 | LIGHT-EMITTING ADJUSTMENT METHOD AND DISPLAY DEVICE - 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. | 04-14-2011 |
| 20110156603 | LIGHT-EMITTING DIODE DRIVING CIRCUIT - 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. | 06-30-2011 |
