| SILICON TOUCH TECHNOLOGY INC. Patent applications |
| Patent application number | Title | Published |
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| 20120075569 | LIQUID CRYSTAL LENS - A liquid crystal lens including a plurality of electrodes and a substrate is provided. A plurality of parallel electric fields is formed by controlling the potentials of the electrodes, so as to speed up the mechanism for toppling the liquid crystal molecules. In other words, the liquid crystal lens has a high respond time. In addition, a plurality of active devices is disposed at the sides of the electrodes in the liquid crystal lens, in which the active devices are electrically connected to the electrodes. When the active devices are driven, a current is formed on the electrodes, so as to raise the temperature of the liquid crystal lens. Accordingly, the liquid crystal lens can be operated in a low temperature environment. | 03-29-2012 |
| 20110234934 | DOUBLE-LAYER LIQUID CRYSTAL LENS APPARATUS - A double-layer liquid crystal lens apparatus having two liquid lens structures is provided. A driving voltage of each liquid crystal lens structure is controlled by an active device disposed thereon. When an incident light is passing through the liquid crystal lens structures, the optical path difference of the incident light is compensated by the liquid crystal lens structures, so that the double-layer liquid crystal lens apparatus performs the focusing function well without using a polarizer. Applying a suitable driving voltage on each of the active devices, the double-layer liquid crystal lens apparatus has a function of modulating focal length focusing/diverging the light, like a convex lens or a concave lens. | 09-29-2011 |
| 20110140618 | LIGHT EMITTING DEVICE - A light emitting device including a voltage source, a light emitting unit, and a current source is provided. The voltage source is coupled to the light emitting unit for supplying a voltage. The light emitting unit includes n light emitting diodes (LEDs) and n current control switches, wherein n is greater than or equal to 3. The LEDs are respectively coupled to the current control switches in series. The current control switches are turned on and off according to a current threshold. The current source is coupled to the light emitting unit for supplying a fixed current. Thereby, the luminous intensity of the light emitting device remains stable even when some of the LEDs fail. | 06-16-2011 |
| 20110109614 | DRIVING CIRCUIT AND METHOD OF LIGHT EMITTING DIODE - A driving circuit and a driving method of an light emitting diode (LED) are provided. The driving circuit includes a current source, a voltage source, a voltage detecting unit, a memory unit, and a control unit. The voltage detecting unit detects a present voltage value of the LED. The memory unit records a previous voltage value of the LED. The control unit controls the voltage source to provide a pre-charge voltage to the LED in a driving period, and to cease providing the pre-charge voltage when the present voltage value is no longer less than the previous voltage value. The voltage level of the pre-charge voltage is determined by the previous voltage value. The control unit controls the current source to provide a driving current to the LED in the driving period. | 05-12-2011 |
| 20110109233 | MULTI-CHANNEL CURRENT DRIVER - A multi-channel current driver is provided. One of the channels includes a channel switch and a memory-type current mirror. A first end of the channel switch receives a reference current. A master current end of the memory-type current mirror is coupled to a second end of the channel switch. Wherein, a slave current end of the memory-type current mirror outputs a driving current according to the reference current when the channel switch provides the reference current to the memory-type current mirror, and the slave current end of the memory-type current mirror holds the driving current when the channel switch stops the reference current. | 05-12-2011 |
| 20110090451 | 3D GRID CONTROLLABLE LIQUID CRYSTAL LENS AND MANUFACTURING METHOD THEREOF - A 3D grid controllable liquid crystal lens is provided. In the 3D grid controllable liquid crystal lens, at least two layers of a plurality of active device arrays are stacked on a first substrate, and a plurality of liquid crystal layer are respectively disposed on the active device arrays. Then, a driving voltage applied on each active device array is suitably controlled to control the orientation of the liquid crystal molecules, so as to generate a refractive index distribution similar to gradient-index lens in the 3D grid controllable liquid crystal lens. Therefore, the 3D grid controllable liquid crystal lens has a focusing function for focusing/diverging the light, similar to a convex lens or a concave lens. A method for manufacturing the 3D grid controllable liquid crystal lens is also provided. | 04-21-2011 |
| 20110069243 | LIQUID CRYSTAL OPTICAL LENS AND MANUFACTURING METHOD THEREOF, LENS APPARATUS USING LIQUID CRYSTAL OPTICAL LENS - A liquid crystal optical lens including a first and a second device substrate and a liquid crystal layer is provided. A first electrode layer and a plurality of first stacked layers are sequent stacked on the first device substrate. Each first stacked layer has a first opening exposing the first electrode layer and includes a first conductive layer and a first insulating layer located between the first conductive layer and the first electrode layer. A second electrode layer and a plurality of second stacked layers are sequent stacked on the second device substrate. Each second stacked layer has a second opening exposing the second electrode layer and including a second conductive layer and a second insulating layer located between the second conductive layer and the second electrode layer. A method for fabricating the liquid crystal optical lens and a lens apparatus using the liquid crystal optical lens are also provided. | 03-24-2011 |
| 20110012459 | POWER GENERATING DEVICE - A power generating device includes a carrier module, a stator module, a rotor module and a power generating module. The stator module is assembled to the carrier module, and has a first circuit board and a plurality of driving coils. The rotor module is located in an electromagnetic field, and has a multipolar magnetic rotor and a rotating axle. A magnetic field of the multipolar magnetic rotor interacts with the electromagnetic field to make the rotor module rotating relative to the stator module, and make the multipolar magnetic rotor producing a varying magnetic field. The power generating module is located in the varying magnetic field, and has a second circuit board and a plurality of induction coils. The induction coils induct the varying magnetic field to output an induction circuit to the second circuit board. | 01-20-2011 |
| 20090040198 | METHOD FOR DETECTING PIXEL STATUS OF FLAT PANEL DISPLAY AND DISPLAY DRIVER THEREOF - The present invention discloses methods and display drivers for pixel status detection of flat panel displays. The method includes the following steps of: providing scan data to the register; using the scan data to drive the pixel; detecting the pixel status to obtain status data; refreshing the register with the status data; and, comparing the scan data with the status data to determine whether the pixel is in abnormal status or not. Based on the aforementioned method, the pixel status could be real-time monitored. | 02-12-2009 |
| 20080204293 | MULTI-CHANNEL DISPLAY DRIVER CIRCUIT INCORPORATING MODIFIED D/A CONVERTERS - A multi-channel display driver circuit incorporating modified D/A converters has a plurality of digital comparators connected to a number generator. Each digital comparator has an output, a digital data input and a reference input. The reference inputs of all digital comparators are connected to the number generator and the outputs are respectively connected to corresponding data channels of a display. By the proposed technique, each digital comparator obtains a unique non-sequence reference signal, and then compares it with the input digital data signal. Since the non-sequential signals are input to the reference input of the digital comparator, the overshoot distortion, the harmonic distortion and the electromagnetic interference problems are prevented. Therefore, the precise imaging can be obtained with this signal modulation technique in small circuit size. | 08-28-2008 |
