| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 349036000 | Including diverse driving frequencies | 17 |
| 20080278643 | LIQUID CRYSTAL DISPLAY APPARATUS - A mono domain vertical alignment type liquid crystal display apparatus to be multiplex driven is provided whose display uniformity at a large pretilt angle (near 90°) is improved. Waveform A is applied to a liquid crystal cell of a mono domain vertical alignment type, the waveform A having a duty not lower than 4 and a frame frequency of f. The frame frequency f is determined from a pretilt angle θp, and is a frequency not lower than 60 Hz at a pretilt angle of 88.5°≦p<89.6° or a frequency not lower than [120×(θp−89.6)+60] Hz at a pretilt angle of 89.6°≦θp≦89.9°. | 11-13-2008 |
| 20080284926 | Liquid Crystal Display Device - A liquid crystal display device is provided with a liquid crystal display panel ( | 11-20-2008 |
| 20090051837 | ANTI-STREAKING METHOD FOR LIQUID CRYSTAL DISPLAY - The invention relates to an anti-streaking method for liquid crystal display, comprising: generating a periodic pulse voltage signal; applying the periodic pulse voltage signal to a common electrode of liquid crystal display, periodically fully biasing all pixels during the pulse generation, to generate periodic black picture. All pixels are fully biased during the pulse generation, causing the light transmissivity to be nearly lowest, thus generating periodic black screen, by applying the periodic pulse voltage signal to the common electrode of LCD, thus effectively mitigates the streaking phenomena of moving image due to the persistence of vision. Meantime, since the periodic black screen intermittently damages the fixed voltage applied on the liquid crystal, the liquid crystal molecules are subject to a strong reordering process periodically, thus the appearance of remnant image can be mitigated. | 02-26-2009 |
| 20100225838 | RECORDING DEVICE - A recording device that includes an obtainment unit that obtains image information representing an image; and a voltage application unit that applies a voltage with a frequency according to the image information obtained by the obtainment unit, to a pair of electrodes equipped with a display medium, the display medium having a multi-layered liquid-crystal phase provided between the pair of electrodes, the multi-layered liquid-crystal phase having a first layer capable of assuming a specific alignment when the applied voltage is greater than or equal to a pre-set first voltage threshold, and a second layer capable of assuming a specific alignment when the applied voltage is greater than or equal to a second voltage threshold. An application of a voltage to the pair of electrodes effecting a first voltage component and a second voltage component applied to the first layer and the second layer, respectively. | 09-09-2010 |
| 20110001896 | TWO-STAGE DRIVE WAVEFORM FOR SWITCHING A DUAL FREQUENCY LIQUID CRYSTAL (DFLC) AT LARGE TILT ANGLES - A two-stage drive waveform switches a DFLC from a high tilt state such as above the LC's linear region or near the ‘saturated’ or ‘field-driven homeotropic’ state of the LC to a low tilt state quickly and without scattering. A relaxation voltage is applied to delay the onset of the high amplitude high frequency kick voltage when switching from a high tilt state to a low tilt state. The relaxation voltage allows the molecules to ‘relax’ in accordance with their own elasticity towards their low tilt state in the direction of the average azimuth angle of the low tilt state. Once the tilt angle has relaxed sufficiently, the kick voltage is applied to drive the molecules quickly to the low tilt state. Most unexpectedly, optimal switching time and the desired molecular response is achieved by delaying the onset of the large kick voltage via application of the relaxation voltage. The relaxation voltage may constitute a lower amplitude holding voltage, a small or zero DC voltage or a smooth windowing of the kick voltage. Whether to apply the relaxation voltage at all and how to apply the relaxation voltage for optimal switching are suitably controlled as a function of the high tilt state. The DFLC is suitably switched from the low-to-high tilt state in the conventional manner without application of a relaxation voltage. | 01-06-2011 |
| 20120019738 | PCLC FLAKE-BASED APPARATUS AND METHOD - A PCLC flake/fluid host suspension that enables dual-frequency, reverse drive reorientation and relaxation of the PCLC flakes is composed of a fluid host that is a mixture of: 94 to 99.5 wt % of a non-aqueous fluid medium having a dielectric constant value ∈, where 1<∈<7, a conductivity value σ, where 10 | 01-26-2012 |
| 20120162555 | CHOLOESTERIC LIQUID CRYSTAL DISPLAY AND FABRICATION THEREOF - A cholesteric liquid crystal display is provided, including a substrate, a first electrode layer disposed on the substrate, and a liquid crystal layer disposed on the first electrode layer, wherein the liquid crystal layer comprises at least two liquid crystals having different sensitivities to driving frequencies, mixed with each other, and liquid crystals having a greater initial state-transition temperature are more sensitive to driving frequency. | 06-28-2012 |
| 20120169953 | LED LIGHTING APPARATUS - Light from an LED (light-emitting diodes) has strong directional characteristics; therefore, lighting over large area, as well as control of the quality or the distribution of lighting was impossible. Placing a liquid-crystal panel in front of an LED (light-emitting diodes) enables to control light from the LED and the quality or the distribution of lighting. | 07-05-2012 |
| 20120188475 | DISPLAY DEVICE, BARRIER DEVICE, AND METHOD OF DRIVING DISPLAY DEVICE - A display device includes a liquid crystal barrier section including a plurality of liquid crystal barriers; a barrier drive section supplying a plurality of barrier drive signals to the plurality of liquid crystal barriers, thereby to allow each of the liquid crystal barriers to be opened and closed; and a display section displaying images. Each of the barrier drive signals includes a first waveform portion with a first wave height value, a second waveform portion, and a third waveform portion maintained at a basal potential, the second waveform portion being arranged immediately before the first waveform portion and having a second wave height value smaller than the first wave height value. | 07-26-2012 |
| 20120257131 | IMAGE STABILIZATION AND SHIFTING IN A LIQUID CRYSTAL LENS - Variable liquid crystal devices for controlling the propagation of light through a liquid crystal layer use a frequency dependent material to dynamically reconfigure effective electrode structures in the device. The frequency of a drive signal that generates an electric field in the device can be varied, and the frequency dependent material has different charge mobilities for the different frequencies. At a low charge mobility, the frequency dependent material has little effect on the existing electrode structures. However, at a high charge mobility, the frequency dependent material appears as an extension of the fixed electrodes, and can be used to change the effective electrode structure and, thereby, the spatial profile of the electric field. This, in turn, changes the optical properties of the liquid crystal, thus allowing the optical device to be frequency controllable. | 10-11-2012 |
| 20130271680 | LIQUID CRYSTAL PANEL, AND LIQUID CRYSTAL DISPLAY - The present invention provides a liquid crystal panel and a liquid crystal display that give a wide viewing angle. The present invention includes a first substrate, a second electrode opposed to the first substrate, and a liquid crystal layer interposed between the first substrate and the second substrate. The first substrate includes a first electrode and a second electrode. The second substrate includes a third electrode. The liquid crystal layer is driven by an electric field generated at least by the first electrode, the second electrode, and the third electrode. The liquid crystal panel includes within a pixel a plurality of regions that are supplied with different voltages to drive the liquid crystal layer. | 10-17-2013 |
| 20130314632 | FAST TUNABLE LIQUID CRYSTAL OPTICAL APPARATUS AND METHOD OF OPERATION - A tunable liquid crystal lens employing a dual frequency liquid crystal material exhibiting a dielectric anisotropy about a crossover frequency at room temperature is provided. A tunable liquid crystal lens drive signal having low and high frequency components about the crossover frequency, applies a spatially modulated electric field to the dual frequency liquid crystal layer, wherein the differential root means square amplitude determines the optical power. Changing the differential root means square amplitude provides optical power changes under prevailing excitation conditions providing improvements in optical power change speed. Employing drive signal pulses can impart further optical power change speed improvements. A variety of tunable liquid crystal lens structures employing the proposed solution are described. | 11-28-2013 |
| 20150015818 | METHOD OF SWITCHING GUEST-HOST DUAL FREQUENCY LIQUID CRYSTAL BY USING BACK FLOW - Provided are methods of switching guest-host dual frequency liquid crystals by using a back flow. In the case of a shutter having a dual frequency liquid crystal layer between two transparent substrates, such a method includes: applying a first voltage having a first frequency to the dual frequency liquid crystal layer; and applying a second voltage having a second frequency to the dual frequency liquid crystal, the second frequency being higher than the first frequency, wherein the second voltage is higher than a threshold voltage that generates a back flow around liquid crystals of the dual frequency liquid crystal layer, and the first voltage is lower than the threshold voltage. | 01-15-2015 |
| 20150055037 | ELECTRO-OPTICAL DEVICES USING DYNAMIC RECONFIGURATION OF EFFECTIVE ELECTRODE STRUCTURES - Variable liquid crystal devices for controlling the propagation of light through a liquid crystal layer use a frequency dependent material to dynamically reconfigure effective electrode structures in the device. The drive signal source uses pulse-width modulation to set a frequency and an amplitude of the drive signal. | 02-26-2015 |
| 20150309342 | IMAGE STABILIZATION AND SHIFTING IN A LIQUID CRYSTAL LENS - Variable liquid crystal devices for controlling the propagation of light through a liquid crystal layer use a frequency dependent material to dynamically reconfigure effective electrode structures in the device. The frequency of a drive signal that generates an electric field in the device can be varied, and the frequency dependent material has different charge mobilities for the different frequencies. At a low charge mobility, the frequency dependent material has little effect on the existing electrode structures. However, at a high charge mobility, the frequency dependent material appears as an extension of the fixed electrodes, and can be used to change the effective electrode structure and, thereby, the spatial profile of the electric field. This, in turn, changes the optical properties of the liquid crystal, thus allowing the optical device to be frequency controllable. | 10-29-2015 |
| 20160161782 | ELECTRO-OPTICAL DEVICES USING DYNAMIC RECONFIGURATION OF EFFECTIVE ELECTRODE STRUCTURES - Variable liquid crystal devices for controlling the propagation of light through a liquid crystal layer use a frequency dependent material to dynamically reconfigure effective electrode structures in the device. The drive signal source uses pulse-width modulation to set a frequency and an amplitude of the drive signal. | 06-09-2016 |
| 20180024386 | DISPLAY DEVICE | 01-25-2018 |
