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62results about How to "Improved contrast characteristics" patented technology
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Display unit and drive system thereof and an information display unit
ActiveUS7737933B2Flicker occurrence can be more suppressedFlicker occurrence can be further effectively suppressedCathode-ray tube indicatorsDigital output to display deviceSemiconductor chipData signal
In a display panel, a dummy pulse of a predetermined voltage signal is superimposed on a data signal and the dummy pulse has an amplitude much larger than the amplitude of the data signal, and thus a signal waveform applied to a light modulation layer such as LC layer is changed to a high frequency wave. The applying position of the dummy pulse is varied according to each color of R, G and B, or varied according to frame or field. By performing a MLS drive with the dummy pulse superimposed on the data signal, the amplitude difference between the selection signal and the data signal can be reduced. Thus, a common driver IC and a segment driver IC can be formed as one semiconductor chip to be placed on one side, constructing a three side free type.
Owner:JAPAN DISPLAY CENTRAL CO LTD
Touch panel comprising an electrically-conductive pattern and a production method therefor
ActiveUS20130215067A1Improve conductive propertyImprove contrast propertyInput/output processes for data processingOptical elementsTouch panelElectrically conductive
The present invention relates to a touch panel comprising a structure body comprising: a substrate; a conducting pattern that is provided on at least one surface of the substrate; and a light absorption pattern provided on at least one surface of the conducting pattern and provided on at least a portion of regions corresponding to the conducting pattern, and a method for manufacturing the same.
Owner:LG CHEM LTD
Liquid crystal display and dimming controlling method thereof
ActiveUS20090184917A1Improving contrast characteristicReducing electric consumption powerElectrical apparatusStatic indicating devicesGlobal dimmingLiquid-crystal display
A liquid crystal display device and a dimming controlling method thereof are disclosed. The liquid crystal display device includes a liquid crystal display panel, a drive circuit supplying a data pulse and a gate pulse to the liquid crystal display panel, a backlight unit divided into a plurality of block including light sources, and irradiating lights of which luminescence is controlled by the blocks, respectively, a controller analyzing an input video data by the block unit, generating a block dimming value based on a result of the analyzing, repeating a low pass filtering to the block dimming value to generate a local dimming value, applying a predeterminded global dimming value to an average of the local dimming value to generate a dimming signal, and a backlight driver generating a PWM signal for controlling a luminescence of the light sources by the blocks respectively according to the dimming signal to drive the light sources by the blocks respectively.
Owner:LG DISPLAY CO LTD
Liquid crystal composition and applications thereof
ActiveCN104774623AStrong dielectric anisotropyHigh optical anisotropyLiquid crystal compositionsNon-linear opticsCrystallographyLiquid-crystal display
Owner:BEIJING BAYI SPACE LCD MATERIALS TECH
Backlight unit and liquid crystal display using the same
ActiveUS20100253881A1Improved contrast characteristicsMechanical apparatusStatic indicating devicesLiquid-crystal displayLight guide
A backlight unit capable of improving contrast properties by implementing a local dimming method while making the backlight unit slim, and a liquid crystal display using the same are provided. The backlight unit includes a first light guide plate array including a plurality of first light guide plates arranged in parallel in a first direction to define a first light guide channels; a second light guide plate array including a plurality of second light guide plates arranged in parallel in a second direction intersected with the first direction to a second light guide channels; a first light array arranged near at least one end of the first light guide plate array to illuminate light to the at least one end of the first light guide plate array; and a second light array arranged near at least one end of the second light guide plate array to illuminate light to the at least one end of the second light guide plate array.
Owner:LG DISPLAY CO LTD
Method of driving plasma display panel
InactiveUS7012579B2Reduce voltage differenceImproved contrast characteristicsStatic indicating devicesEngineeringContrast ratio
Disclosed is a method of driving a plasma display panel enabling to improve an overall contrast characteristic of the plasma display panel by reducing a voltage difference between scan and sustain electrodes Y and Z to decrease an emission amount of light generated by a discharge between the scan and sustain electrodes Y and Z. The present invention includes a first step of applying a reset pulse to the scan electrode to form predetermined wall charges on the electrodes for a set-up period and a second step of applying a pulse of a predetermined level to the sustain electrode to reduce a voltage difference between the scan and sustain electrodes while the reset pulse is applied.
Owner:INTELLECTUAL DISCOVERY CO LTD
Display device
InactiveUS20060187384A1Improved contrast characteristicsDisplay luminance can be enhancedElectroluminescent light sourcesSolid-state devicesSelective reflectionRefractive index
When a peak wavelength of light emerging from a light-emitting layer is λp(k) (k=1, 2, . . . , m in an order from a smallest wavelength), the peak wavelength λp(k) is less than a value ne(k)P(k) that is obtained by multiplying an extraordinary-ray refractive index ne(k) of a selective reflection layer that forms each selective reflection region by a helical pitch P(k), and is greater than a value no(k)P(k) that is obtained by multiplying an ordinary-ray refractive index no(k) by the helical pitch P(k). A relationship, ne(k−1)P(k−1)<no(k)P(k), is established between the selective reflection layers that form the selective reflection regions.
Owner:TOSHIBA MATSUSHITA DISPLAY TECH
Lens system and method with antireflective coating
ActiveUS7717557B2Low costImproves perceived clarity of transmitted imageOptical partsOptical elementsColor shiftHue
An improved method is provided for applying an antireflective high contrast coating to a lens, as well as a lens system made with said method. By coating the lenses with a mixture of an oxide and fluoride, the transmission of undesirable visible light wavelengths is reduced, as is the reflection of undesirable light. This combination not only increases perceived sharpness and detail associated with viewing objects through the lenses, but also reduces undesirable reflected glare. Utilization of increased vacuum during the coating process reduces problems of humidity associated with plastic lenses. The combination of oxide and fluoride is controlled to reduce colored tint or hue in the resulting lenses. By imparting little to no color hue to the lenses, the lenses virtually eliminate any undesired color shift associated with prior art lenses.
Owner:MAUI JIM
Plasma display apparatus and method of driving the same
InactiveUS20060232507A1Improved contrast characteristicsReduce address periodStatic indicating devicesGray levelEngineering
A plasma display apparatus and a method of driving the same, more particularly to, a plasma display apparatus considering the gray level values of sub-fields and a method of driving the same are provided. The plasma display apparatus controls the magnitudes of reset pulses or the widths of scan pulses in units of sub-fields thereby improving contrast, preventing driving margins from deteriorating, stabilizing discharges and improving. brightness.
Owner:LG ELECTRONICS INC
Liquid crystal display
ActiveCN101881903ADoes not produce dark linesStrong penetrating powerLiquid crystal compositionsNon-linear opticsCrystallographyDisplay device
The invention provides a novel liquid crystal display, in particular to a wide-visual-angle liquid crystal display providing high permeability for the display. The liquid crystal display of the invention structurally comprises at least one orientation device and a liquid crystal layer, wherein the orientation device makes liquid crystal molecules form continuous domain arrangement or multi-domain arrangement in the display region, and further, the liquid crystal molecules have the wide-visual-angle characteristics in the optical aspect; and the liquid crystal layer is made of nematic liquid crystal materials doped with chirals, and the optimum conditions of the delta(nd) and the d / p of the liquid crystal are found, so the liquid crystal molecule structures ranged in each direction can reach the optimum permeability for forming the liquid crystal display with wide visual angle and high permeability.
Owner:INNOCOM TECH SHENZHEN +1
Plastic polarized lens, method for producing the same, and polarized film
ActiveUS20130155507A1Enhanced Contrast FeaturesImproved contrast characteristicsOptical articlesPolarising elementsChemistryPhysics
The plastic polarized lens (10) of the present invention contains a polarized film (12) and layers (resin layers) (14a and 14b) comprising a thiourethane-based resin stacked over both surfaces of the polarized film (12), and the polarized film contains an organic coloring compound represented by the following general formula (1).
Owner:HOPNIC LAB
Image display device and projector
InactiveUS20060203202A1Clear imagingImproved contrast characteristicsTelevision system detailsProjectorsDisplay deviceOptoelectronics
An image display device that displays an image by modulating a light from a light source according to display image data, includes: a first light modulation element that modulates a light emitted from the light source; and a second light modulation element that is disposed on an optical path in series with the first light modulation element and modulates a light exiting from the first light modulation element, wherein the first light modulation element and the second light modulation element are disposed in such a manner that a bright-field direction of an optical image of the first light modulation element and a bright-field direction of the second light modulation element almost coincide with each other.
Owner:138 EAST LCD ADVANCEMENTS LTD
Imaging displaying apparatus and 3-D image displaying apparatus applying the same therein
ActiveUS20080284921A1Quality improvementLow costTelevision system detailsColor television detailsSignal modulationLight source
An image displaying apparatus, comprising: a first light modulator unit, which is configured to modulate a light incident thereon, responding to a first video signal, thereby to form a first image; one or a plural number of second light modulator units, which is / are configured to modulate a light from a light source, responding to a second video signal; and an enlarged image forming unit, being disposed on a light incidence side of the first light modulator unit, upon which a light modulated within the second light modulator unit is projected, enlargedly, thereby to form a second image thereon, wherein upon the first light modulator unit is incident the light of the second image formed on the enlarged image forming unit, and the first image is formed through modulation of the light of the second image responding to the first video signal.
Owner:MAXELL HLDG LTD
Liquid crystal display device of an in-plane switching mode including a black matrix layer
InactiveUS6937312B2Display property can be enhancedImproved contrast characteristicsStatic indicating devicesOriginals for photomechanical treatmentIn planeLiquid-crystal display
A black matrix layer 14 is formed on a counter substrate 13 along the direction where a scanning line 2 extends, so that it continuously covers the upper parts of a common electrode line 3a, the scanning line 2, a space between the common electrode line 3a and the scanning line 2, a TFT 5, a space between the scanning line 2 and a common electrode line 3b, and the common electrode line 3b, and in the portion opposed to the signal line, the black matrix layer is eliminated.
Owner:NEC LCD TECH CORP
In-plane switching liquid crystal display including viewing angle compensation film using +A-plate
ActiveUS20050248707A1Improved contrast characteristicsImprove minimum contrast ratio valueCooking vesselsNon-linear opticsLiquid-crystal displayColor shift
Disclosed is an in-plane switching liquid crystal display. The in-plane switching liquid crystal display uses at least one A-plate and adjusts the optical axis direction and the retardation value of the A-plate, thereby improving the contrast characteristic at a front and at a predetermined inclination angle of the in-plane switching liquid crystal display while minimizing a color shift according to viewing angles in the black state.
Owner:LG CHEM LTD
Method of driving plasma display panel
InactiveUS20060139246A1Improved contrast characteristicsEmission reductionStatic indicating devicesEngineeringContrast ratio
Owner:LG ELECTRONICS INC
Display device
InactiveUS20090147160A1Improved contrast characteristicsIncrease contrastSteroscopic systemsNon-linear opticsDisplay deviceOptical polarization
The present invention relates to a display device with a birefringent lens system having cylindrical lenses, extending in a main direction. The polarisation of light modulated by a LC layer is twisted by a rotator layer (25′) in order to be perpendicular or parallel with this main direction. A birefringent compensation layer (26) is used to remove any ellipticity introduced by the rotator layer (25′). This provides improved contrast when the display device is used e.g. in a switchable 2D / 3D display.
Owner:KONINKLIJKE PHILIPS ELECTRONICS NV
Liquid crystal display device with an anisotropically reflecting layer and manufacturing method for the same
ActiveUS20110013127A1Maximize utilizationQuality improvementLiquid crystal compositionsMirrorsSelf compensationAzimuth direction
A liquid crystal display device comprises an optically diffusively reflecting layer arranged to maximize utilization of incident light. The reflecting layer contains a thin metallic film with projections (14a) each having an unsymmetrical cross section to centralise reflected light in a specific azimuth direction (y). The range of viewing angles (θx-z, θy-z) into which a substantial portion of the incident light is reflected is broader in the specific azimuth direction (y) than in another direction (x). The director (5d) of liquid crystal molecules initiallly lies in a plane (y-z) parallel to the specific azimuth direction (y) to achieve retardation self-compensation.
Owner:INNOLUX CORP
Liquid crystal device and electronic apparatus
InactiveUS20090237605A1Improved contrast characteristicsAvoid failureLiquid crystal compositionsThin material handlingVertical alignmentEngineering
A liquid crystal device includes: a circuit substrate; a counter substrate disposed so as to be opposed to the circuit substrate; a liquid crystal layer interposed between the circuit substrate and the counter substrate, the liquid crystal layer showing vertical alignment as an initial alignment state; a first alignment layer manufactured on a side of the counter substrate using a coating process, the side facing the liquid crystal layer, the first alignment layer having a vertical alignment function; and a second alignment layer manufactured on a side of the circuit substrate using a vacuum process, the side facing the liquid crystal layer, the second alignment layer generating a pretilt.
Owner:SEIKO EPSON CORP
Display
InactiveCN1871627AImproved contrast characteristicsIncrease display brightnessElectroluminescent light sourcesSolid-state devicesSelective reflectionRefractive index
A display characterized in that it comprises a selective reflecting layer (SR) provided between a quarter-wave plate (WP) and a light-emitting layer (64), containing liquid crystal molecules aligned at predetermined helical pitches, transmitting a first circularly polarized light, and selectively reflecting a second circularly polarized light having a polarity opposite to that of the first circularly polarized light and a predetermined wavelength, the light-emitting layer (64) has at least one peak wavelength, the selective reflecting layer (SR) has m selective reflection wavelength regions when the number of peak wavelengths of the light-emitting layer (64) is m, the peak wavelength lambdap(k) of the light emitted from the light-emitting layer (64) (where k=1, 2, ..., m in the descending order of wavelength) is smaller than the product ne(k)P(k) of the extraordinary light refractive index ne(k) of the selective reflecting layer (SR) constituting the selective reflection wavelength regions and the helical pitch P(k) and larger than the product no(k)P(k) of the ordinary light reflective index no(k) and the helical pitch P(k), and the condition ne(k-1)P(k-1)<no(k)P(k) is satisfied between the selective reflecting layers (SR) constituting the selective reflection wavelength regions.
Owner:TOSHIBA MATSUSHITA DISPLAY TECH
Liquid crystal display device
InactiveCN1617035AShow clearlyImprove transmission characteristicsTransistorStatic indicating devicesUV curingDifferential phase
Provided is a liquid crystal display device of which the display property of semiconductor LCD can be improved, and thinning down of thickness and cost lowering of LCD can be achieved. In a reflection area, the side of color filter opposite the liquid crystal layer (300) of glass substrate (200) is coated with an UV curable liquid crystal (240) and then subjected to an UV irradiation for curing. Since the UV curable liquid crystal (240) performs as a differential phase shifter, unlike the prior art, laminating the differential phase shifter onto the glass substrate or TFT glass substrate on the color filter side is not needed. In addition, because the UV curable liquid crystal (240) is easy to be patterned, the pattern formation can be selectively made only on the reflection area.
Owner:SANYO ELECTRIC CO LTD
Imaging displaying apparatus and 3-D image displaying apparatus applying the same therein
ActiveUS8441582B2Quality improvementLow costTelevision system detailsColor television detailsSignal modulationLight source
An image displaying apparatus, comprising: a first light modulator unit, which is configured to modulate a light incident thereon, responding to a first video signal, thereby to form a first image; one or a plural number of second light modulator units, which is / are configured to modulate a light from a light source, responding to a second video signal; and an enlarged image forming unit, being disposed on a light incidence side of the first light modulator unit, upon which a light modulated within the second light modulator unit is projected, enlargedly, thereby to form a second image thereon, wherein upon the first light modulator unit is incident the light of the second image formed on the enlarged image forming unit, and the first image is formed through modulation of the light of the second image responding to the first video signal.
Owner:MAXELL HLDG LTD
Optical system and image projection apparatus
InactiveUS7588337B2Improved contrast characteristicsWithout deteriorating evennessProjectorsOptical elementsIntegratorLuminous flux
Owner:CANON KK
Optical system and image protection apparatus
InactiveUS20060215247A1Improved contrast characteristicsWithout deteriorating evennessProjectorsOptical elementsIntegratorLight beam
An optical system is disclosed which is capable of improving of its contrast characteristic and displaying of images which have a brightness according to the brightness of the use environment. The optical system comprises an optical integrator which divides and recombines the illumination luminous flux in a first axis direction and a light intensity distribution converter which converts the light intensity distribution of the illumination luminous flux in a second axis direction. The optical system further comprises a luminous flux limiting unit which has an aperture. The size of the aperture is changeable in the second axis direction and unchangeable in the first axis direction.
Owner:CANON KK
Liquid crystal device and manufacturing method therefor, and electronic apparatus
InactiveUS20080291370A1Improve display characteristicsImproved contrast characteristicsNon-linear opticsDielectric anisotropyVertical alignment
A liquid crystal device includes: a first substrate; a second substrate that is disposed facing the first substrate; a liquid crystal layer that is sandwiched between the first substrate and the second substrate and is composed of a liquid crystal exhibiting, in an initial alignment state thereof, a vertical alignment and having negative dielectric anisotropy; a light shielding film that is formed on a side of the liquid crystal layer on the first substrate and that corresponds to a non-display region and defining a display region; a pixel electrode that is disposed, on the first substrate, from the display region with a periphery projecting on the light shielding film; a vertical alignment film that is disposed, on the pixel electrode, only in the display region or from the display region with a periphery projecting in the non-display region; and a horizontal alignment film that is disposed, in an area without the vertical alignment film above the light shielding film, with a periphery projecting on the pixel electrode.
Owner:SEIKO EPSON CORP
Lenticular sheet and transmission type screen using the same
InactiveUS20050264880A1Improve moldability and workabilitySufficient toleranceProjectorsEngineeringLenticular lens
Disclosed is a lenticular sheet obtained by the method comprising the steps of: forming lenticular lens section on the input side of the sheet; forming an irregular section having a plurality of depressions and protrusions on the output side of the sheet; forming a light-absorbing layer on each protrusion; and filling each depression with a light-transmittable resin. The lenticular sheet provides a tolerance needed for fine pitch pattern processing and can be manufactured by using a conventional printing process as it is, thereby providing excellent contrast characteristics as well as excellent moldability.
Owner:LG CHEM LTD
Liquid crystal display device, method for manufacturing the same, and electronic apparatus
InactiveUS20090239002A1Improved contrast characteristicsAvoid failureLiquid crystal compositionsSpecial surfacesLiquid-crystal displayChain length
A liquid crystal display device includes a pair of substrates, and a liquid crystal layer that is vertically aligned in an initial state and sandwiched between the pair of the substrates. In the device, an alignment layer existing on an uppermost surface of at least one of the substrates is composed of alkyl chains having a different chain length each other, and an alkyl chain having a shortest chain length in the alkyl chains is tilted to the uppermost surface of the at least one of the substrates.
Owner:SEIKO EPSON CORP
Method and apparatus for driving a plasma display panel
InactiveUS7532177B2Prevents low dischargeImproved contrast characteristicsStatic indicating devicesCold-cathode tubesEngineeringContrast ratio
Disclosed herein is a method and apparatus for driving a plasma display panel, which improves contrast characteristics and preventing a low discharge making a cell non-luminous at a specific gray scale. The method for driving a plasma display panel includes the steps of initializing a cell by supplying a first write voltage and an erase voltage to a scanning electrode during a reset interval of the n-th sub-field; initializing the cell by supplying the erase voltage and a second write voltage which is higher than a sustaining voltage and lower than the first write voltage to the scanning electrode during a reset interval of the (n+1)-th sub-field; selecting the cell by supplying the scanning voltage to the scanning electrode and supplying a data voltage to an address electrode during an address interval of each of the n-th and (n+1)-th sub-fields; and alternatively supplying the sustaining voltage to the scanning and sustaining electrodes during a sustaining interval of each of the n-th and (n+1 )-th sub-fields.
Owner:LG ELECTRONICS INC
Method and apparatus for driving a plasma display panel
InactiveUS7592973B2Improved contrast characteristicsPrevent misdischargeTelevision system detailsStatic indicating devicesVoltage variationPlasma display
The present invention relates to a plasma display panel, and more particularly, to an apparatus for driving a plasma display panel and method thereof. The method for driving the PDP according to the present invention includes the steps of: setting a sustain period where a specific voltage is maintained for a predetermined time period between first and second periods whose voltage varies, in the ramp waveform, and supplying the ramp waveform to electrodes. The apparatus for driving the PDP according to the present invention includes an initialization driving circuit for generating a ramp waveform including a sustain period where a specific voltage is maintained for a predetermined time period between first and second periods whose voltage varies and supplying the ramp waveform to electrodes.
Owner:LG ELECTRONICS INC
Organic light-emitting display apparatus
ActiveUS8860034B2Improved contrast characteristicsElectroluminescent light sourcesSolid-state devicesOptical propertyOptoelectronics
Owner:SAMSUNG DISPLAY CO LTD
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