Patent application number | Description | Published |
20100130059 | BACKLIGHT UNIT AND LAMP SOCKET THEREOF - A lamp socket includes a socket body, a flange and a plurality of support members. The flange is connected to the socket body and protrudes from the socket body horizontally. The plurality of support members are connected to the socket body. At least one engaging groove including at least two engaging widths is formed between the plurality of the support members and the flange, so as to secure the socket body to a bezel. | 05-27-2010 |
20100259704 | Backlight Module and Liquid Crystal Display - A backlight module includes a back plate having a through opening area, a carrying element disposed on the back plate, a circuit board disposed on the carrying element and at least one light emitting element disposed on the circuit board and corresponding to the through opening area. An LCD includes an LCD panel having a display area and a non-display area opposite to each other, a backlight module including a back plate, a circuit board and at least one light emitting element and a cover disposed at the LCD panel. The back plate disposed at the non-display area has a through opening area corresponding to the non-display area. The light emitting element is disposed on the circuit board and corresponding to the through opening area. The cover has a surface and covers the through opening area. The surface of the cover faces the through opening area and the non-display area. | 10-14-2010 |
20100323556 | BACKLIGHT UNIT AND LAMP SOCKET THEREOF - A lamp socket includes a socket body, a flange and a plurality of support members. The flange is connected to the socket body and protrudes from the socket body horizontally. The plurality of support members are connected to the socket body. At least one engaging groove including at least two engaging widths is formed between the plurality of the support members and the flange, so as to secure the socket body to a bezel. | 12-23-2010 |
20120115357 | BACKLIGHT UNIT AND LAMP SOCKET THEREOF - A lamp socket includes a socket body, a flange and a plurality of support members. The flange is connected to the socket body and protrudes from the socket body horizontally. The plurality of support members are connected to the socket body. At least one engaging groove including at least two engaging widths is formed between the plurality of the support members and the flange, so as to secure the socket body to a bezel. | 05-10-2012 |
Patent application number | Description | Published |
20110141086 | ELECTROPHORETIC DISPLAY AND METHOD OF DRIVING THE SAME - An electrophoretic display with threshold voltage drift compensation functionality includes a gate driving circuit, a data driving circuit, a controller and a pixel array. The gate driving circuit provides plural gate signals according to a scan control signal. The data driving circuit provides plural data signals according to a data control signal. The controller is employed to provide the scan control signal and the data control signal. The pixel array is utilized for displaying images according to the gate signals and the data signals. Each of the gate signals includes a writing enable pulse for enabling write operations of the data signals during a writing period. And during a compensation period, each of the gate signals includes a compensation pulse for performing threshold voltage drift compensation operations on the data switches of the pixel array, and the data signals are set to hold a common voltage. | 06-16-2011 |
20130075766 | THIN FILM TRANSISTOR DEVICE AND PIXEL STRUCTURE AND DRIVING CIRCUIT OF A DISPLAY PANEL - A thin film transistor device, disposed on a substrate, includes a gate electrode, a semiconductor channel layer, a gate insulating layer disposed between the gate electrode and the semiconductor channel layer, a source electrode and a drain electrode disposed at two opposite sides of the semiconductor channel layer and partially overlapping the semiconductor channel layer, respectively, a capacitor electrode at least partially overlapping the gate electrode, and a capacitor dielectric layer disposed between the capacitor electrode and the gate electrode. The capacitor electrode, the gate electrode and the capacitor dielectric layer form a capacitor device. | 03-28-2013 |
Patent application number | Description | Published |
20080259655 | SWITCHING-MODE POWER CONVERTER AND PULSE-WIDTH-MODULATION CONTROL CIRCUIT WITH PRIMARY-SIDE FEEDBACK CONTROL - A pulse-width-modulation control circuit of a switching-mode power converter with a primary-side feedback control is disclosed. The switching-mode power converter includes a transformer, a power switch, a current sensing resistor and the pulse-width-modulation control circuit. The transformer includes a primary-side winding, a secondary-side winding and an auxiliary winding. The pulse-width-modulation control circuit includes a sample and hold circuit, a transconductor circuit, an error amplifier and a pulse-width-modulation generator. | 10-23-2008 |
20080298088 | DC TO DC CONVERTER WITH LOAD OPEN DETECTION AND RELATED METHOD THEREOF - Disclosed is a DC to DC converter, which comprises: a transforming circuit, for transforming an input voltage to an output voltage; a comparator, for comparing a reference voltage and a feedback voltage proportional to the output voltage to generate a comparing signal; a control circuit, coupled to the transforming circuit and the comparator, for controlling the transforming circuit according to the comparing signal; and a time-counting device, coupled to the control circuit, for counting the time of a specific voltage level of the comparing signal; wherein the time-counting device informs the control circuit that a load open situation occurs if the specific voltage level of the comparing signal lasts a predetermined time, then the control circuit turns off the transforming circuit. | 12-04-2008 |
20090180219 | APPARATUS FOR DETECTING ERROR OCCURRING TO POWER CONVERTER AND DETECTING METHOD THEREOF - An apparatus is applicable to a power converter comprising a primary winding for receiving an input voltage and a secondary winding for generating an output voltage to power a load. The apparatus comprises a detecting circuit, a comparing circuit, and a determining circuit. The detecting circuit is configured to generate a feedback signal according to the output voltage. The comparing circuit is coupled to the detecting circuit and configured to compare the feedback signal and a threshold and accordingly generates an indication signal indicative of the over high output voltage. The determining circuit, which is in response to the indication signal, is configured to trigger an over voltage protection mechanism preventing the power converter from powering the load. Since the feedback signal is instantly responsive to the output voltage, the occurrence of an error can be rapidly and correctly detected, allowing rapid and correct protection for the power converter. | 07-16-2009 |
20090279329 | DIGITAL LATCH CONTROL CIRCUIT FOR OVER-VOLTAGE PROTECTION AND POWER CONVERTER USING THE CONTROL CIRCUIT - An AC/DC power supply with over-voltage protection includes a voltage converting circuit and a digital latch control circuit. The voltage converting circuit has a first-side winding, a second-side winding, and an auxiliary winding for providing a supply voltage according to the AC input voltage. The digital latch control circuit is coupled to the voltage converting circuit and utilized for latching a voltage level of the supply voltage at a first predetermined level according to an over-voltage protection (OVP) trigger signal, where the voltage converting circuit is disabled when the voltage level is latched at the first predetermined level. | 11-12-2009 |
20090284180 | DRIVING CIRCUIT FOR LIGHT EMITTING DEVICE WITH COMPENSATION MECHANISM AND DRIVING METHOD THEREOF - A light emitting device driving circuit, includes: a switch device, a comparator, a driving module, a time counting circuit and a compensation module. The switch device is turned on or off according to a control signal for controlling a driving current flowing through the light emitting device. The comparator generates a comparison result according to a reference voltage and a feedback voltage corresponding to the driving current. The driving module generates the control signal according to the comparison result. The time counting circuit controls the driving module to turn on the switch device after the switch device turns off for a predetermined time. The compensation module detects a turn on time for the switch device and a delay time between the feedback voltage reaching the reference voltage value and the control signal varying correspondingly, and adjusts the reference voltage according to the turn on time and the delay time. | 11-19-2009 |
20100052742 | LIMIT SIGNAL GENERATOR, PWM CONTROL CIRCUIT, AND PWM CONTROL METHOD THEREOF - A PWM control circuit is disclosed. An oscillator generates a triangular signal, received by a limit signal generator to produce a limit signal accordingly. Corresponding to a rising period of the triangular signal, the limit signal sequentially experiences a first holding period, a rising period and a second holding period, wherein the limit signal has a first predetermined value during the first holding period and a second predetermined value during the second holding period. A compare/control circuit compares the limit signal with a detection signal corresponding to a current through a power switch, and controls the power switch accordingly. | 03-04-2010 |
20110211372 | COMPENSATION CIRCUITS AND CONTROL METHODS OF SWITCHED MODE POWER SUPPLY - A compensation circuit has a resistor, a switch and a compensation capacitor. The resistor and the switch are connected in series between a power node and a compensation node. The compensation capacitor is connected to the compensation node, whose voltage is responsive to the output power source. For a predetermined period of time after the voltage falls below a predetermined value, the switch is open and no current flows through the resistor from the power node to the compensation node. | 09-01-2011 |
Patent application number | Description | Published |
20090108768 | BACKLIGHT CONTROL DEVICE AND METHOD FOR CONTROLLING A DRIVING CURRENT OF AN LED - A backlight control device for controlling a driving current of an LED is disclosed. By controlling current outputs from current sources of a plurality of current output units, a display will be able to generate desirable backlight. Then by adjusting currents output by the plurality of current output units, brightness of a plurality of pixels can be dynamically adjusted. The brightness of pixels with higher gray levels can be increased while the brightness of pixels with lower gray levels can be decreased, thereby improving the contrast of image and saving power consumption. | 04-30-2009 |
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 |
20100302182 | TOUCH PANEL WITH REDUCED CHARGE TIME - A touch panel includes a sensing region, a storage unit, a precision rectifier circuit and a comparing circuit. There exists an equivalent capacitance at a predetermined location in the sensing region. At the predetermined location, the sensing region can provide a first signal before a touch action occurs and a second signal after the touch action occurs. The precision rectifier circuit can control the signal transmission path between the predetermined location and the storage unit. After being charged by the first and second signals, the storage unit can respectively provide corresponding third and fourth signals. The comparing circuit can thus determine whether the touch action occurs at the predetermined location according to the third and fourth signals. | 12-02-2010 |
20110063246 | CAPACITIVE TOUCH DETECTION SYSTEM AND DETECTION SIGNAL RECEIVING AND WAVEFORM SHAPING MODULE - An exemplary capacitive touch detection system includes a capacitive touch panel and a detection control circuit. The capacitive touch panel includes a plurality of input terminals and output terminals. The detection control circuit includes a scanning signal transmitting module electrically coupled to the input terminals and a detection signal receiving and waveform shaping module including a receiver and an impedance-matching network. The detection signal receiving and waveform shaping module is electrically coupled to the output terminals for receiving and processing a plurality of detection signals outputted from the respective output terminals and thereby producing a plurality of processed detection signals. The receiver is used for receiving the detection signals. The impedance-matching network is used for performing a waveform shaping operation applied to the detection signals to compensate an effect caused by uneven RC loading distribution in the capacitive touch panel and thereby producing the processed detection signals. | 03-17-2011 |
20110292027 | BACKLIGHT CONTROL DEVICE AND METHOD FOR CONTROLLING A DRIVING CURRENT OF AN LED - A backlight control device for controlling a driving current of an LED is disclosed. By controlling current outputs from current sources of a plurality of current output units, a display will be able to generate desirable backlight. Then by adjusting currents output by the plurality of current output units, brightness of a plurality of pixels can be dynamically adjusted. The brightness of pixels with higher gray levels can be increased while the brightness of pixels with lower gray levels can be decreased, thereby improving the contrast of image and saving power consumption. | 12-01-2011 |
Patent application number | Description | Published |
20140204326 | PIXEL ARRAY SUBSTRATE AND LIQUID CRYSTAL DISPLAY PANEL - A pixel array substrate with new pixel design and a liquid crystal display panel with the pixel array substrate are provided. The pixel array substrate includes a plurality of data lines, a plurality of scan lines and a plurality of pixels. Each of the pixels comprises a first electrode, a first connecting line, a second electrode and a second connecting line. The first electrode is electrically connected with corresponding data line and scan line through the first connecting line, and having a slit. The second pixel is electrically connected with corresponding data line and scan line through the second connecting line. At least a part of the second connecting line is exposed by the slit of the first electrode. | 07-24-2014 |
20150042691 | PIXEL DRIVING METHOD AND LIQUID CRYSTAL DISPLAY IMPLEMENTING THE SAME - A pixel driving method is adapted for a liquid crystal display. Each pixel includes a first sub-pixel and a second sub-pixel, in which the first sub-pixel and the second sub-pixel each includes a first display region and a second display region. The pixel driving method includes providing a first voltage to the first displaying region of the first sub-pixel and the second sub-pixel; providing a second voltage to the second displaying region of the first sub-pixel and a third voltage to the second displaying region of the second sub-pixel; and when the provided first voltage is larger than a predetermined voltage, providing the second voltage so that the provided second voltage is smaller than the provided third voltage. | 02-12-2015 |
20150160518 | ACTIVE DEVICE ARRAY SUBSTRATE - An active device array substrate includes a substrate, a first pixel electrode, and a first raised pattern. The first pixel electrode is disposed on or above the substrate, and the first pixel electrode includes a first truck electrode, a second truck electrode, and a plurality of first branch electrodes. The first truck electrode and the second truck electrode intersect to form a first node at the intersection of the first truck electrode and the second truck electrode. The first branch electrodes are connected to the first truck electrode and the second truck electrode to form a plurality of first domains, wherein the first branch electrodes are asymmetrical with respect to the second truck electrode. The first raised pattern is disposed at least between the first node and the substrate to form a first raised structure at least at the first node. | 06-11-2015 |