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Contrast Ratio patents

      

This page is updated frequently with new Contrast Ratio-related patent applications.




 Display and fabricating method thereof, and fabricating  photosensitive fiilm patent thumbnailDisplay and fabricating method thereof, and fabricating photosensitive fiilm
The embodiments of the present disclosure provide a display and a fabricating method thereof, and a fabricating method of a photosensitive film. The display comprises: a display screen for displaying a picture, and a photosensitive film disposed on a light emergent surface of the display screen, wherein the photosensitive film is configured to automatically adjust corresponding transmittance according to a gray level brightness of the picture displayed by the display screen, and the transmittance of the photosensitive film increases with the increase of the gray level brightness of the picture displayed by the display screen.
Beijing Boe Optoelectronics Technology Co., Ltd.


 Liquid crystal display patent thumbnailLiquid crystal display
The liquid crystal display provided by the present invention acquires the light of linear polarization by doping the quantum-dot material in the color resist layer to excite the quantum-dots by the backlight to form the light of a certain light spectrum and cooperating with the anisotropic polarization layer manufactured by organic dye molecules for selectively allowing the light of different polarization states to pass through. The light leakage issue due to the light polarization state change caused by the quantum-dot material can be effectively solved to raise the contrast ratio.
Shenzhen China Star Optoelectronics Technology Co., Ltd.


 Display structure with high-brightness diffuse reflector and manufacturing method thereof patent thumbnailDisplay structure with high-brightness diffuse reflector and manufacturing method thereof
A display structure having a high-brightness diffuse reflector, an electrowetting display structure based on the display structure, an in-cell type electrowetting display structure and a manufacturing method thereof are disclosed. The display structure comprises panel glass (1), a display layer (2) and substrate glass (3), wherein a high-brightness diffuse reflection polymer thin film material (4) is arranged under the substrate glass (3); the panel glass (1), the display layer (2), the substrate glass (3) and the diffuse reflection polymer thin film material (4) are stacked in sequence.
Shenzhen Guohua Optoelectronics Institute


 Liquid crystal composition and liquid crystal display device patent thumbnailLiquid crystal composition and liquid crystal display device
To show a liquid-crystal composition having at least one or a suitable balance regarding at least two of characteristics such as a high maximum temperature of a nematic phase, a low minimum temperature thereof, small viscosity, suitable optical anisotropy, large negative dielectric anisotropy, large specific resistance, high stability to ultraviolet light and heat; and an am device including the composition and having short response time, a large voltage holding ratio, low threshold voltage, a large contrast ratio or a long service life. The liquid-crystal composition has negative dielectric anisotropy and contains a specific compound having a high maximum temperature and small viscosity as a first component, and the composition may contain a specific compound having large negative dielectric anisotropy as a second component, a specific compound having a high maximum temperature or small viscosity as a third component, and a specific compound having a polymerizable group as an additive component..
Jnc Petrochemical Corporation


 Liquid crystal composition and liquid crystal display device patent thumbnailLiquid crystal composition and liquid crystal display device
The disclosure shows a liquid-crystal composition having at least one or suitable balance regarding at least two of characteristics such as high maximum temperature of nematic phase, low minimum temperature thereof, small viscosity, suitable optical-anisotropy, large dielectric-anisotropy, large specific resistance, high stability to ultraviolet light and heat; and an am device including the composition and having short response time, large voltage holding ratio, large contrast ratio or long life. The liquid-crystal composition has the nematic phase and contains a specific compound having small optical-anisotropy and large positive dielectric-anisotropy as first component, a specific compound having small viscosity as second component, and may contain a specific compound having high maximum temperature or small viscosity as third component, a specific compound having large positive-dielectric anisotropy as fourth component or a specific compound having negative dielectric-anisotropy as fifth component, and a liquid-crystal display device includes the composition..
Jnc Petrochemical Corporation


 Apparatus and  measuring quality of holographic image patent thumbnailApparatus and measuring quality of holographic image
A method and apparatus for measuring a quality of a holographic image are provided. An image quality measuring method may include acquiring a first image including a holographic image in a background, and a second image that does not include a holographic image, the first image and the second image being on the same background, extracting a gray level value and a dark-noise counted level value from the first image in a selected range of the first image, extracting a gray level value and a dark-noise counted level value from the second image in the same range as the selected range of the first image, and determining a holographic contrast ratio (hcr) of the holographic image based on the extracted gray level values and the extracted dark-noise counted level values..
Electronics And Telecommunications Research Instit Ute


 Artificial retinal prosthesis system, optical device and retina chip patent thumbnailArtificial retinal prosthesis system, optical device and retina chip
An artificial retinal prosthesis system comprises an extraocular optical device and an intraocular retina chip. The extraocular optical device receives an external image, converts it into an optical pulse signal, and generates light energy.
National Chiao Tung University


 Liquid crystal display apparatus patent thumbnailLiquid crystal display apparatus
Provided is a liquid crystal display apparatus capable of preventing a disclination and minimizing a decrease in contrast ratio caused by leakage of light. A counter electrode formed on an array substrate has a plurality of slits within one pixel.
Mitsubishi Electric Corporation


 Reclaimed polyethylene composition patent thumbnailReclaimed polyethylene composition
A composition is disclosed that comprises at least about 95 weight percent reclaimed polyethylene. The reclaimed polyethylene comprises less than about 10 ppm al, less than about 200 ppm ti, and less than about 5 ppm zn.
The Procter & Gamble Company


 Reclaimed polypropylene composition patent thumbnailReclaimed polypropylene composition
A composition is disclosed that comprises at least about 95 weight percent reclaimed polypropylene. The reclaimed polypropylene comprises less than about 10 ppm al, less than about 5 ppm ti, and less than about 5 ppm zn.
The Procter & Gamble Company


Articles of reclaimed polypropylene composition

An article is disclosed that comprises at least about 95 weight percent reclaimed polyethylene base resin. The base resin comprises less than about 10 ppm al, less than about 200 ppm ti, and less than about 5 ppm zn.
The Procter & Gamble Company

Articles of reclaimed polypropylene compositions

An article is disclosed that comprises at least about 95 weight percent reclaimed isotactic polypropylene base resin. The base resin comprises less than about 10 ppm al, less than about 5 ppm ti, and less than about 5 ppm zn.
The Procter & Gamble Company

Liquid crystal display and manufacturing same

A liquid crystal display is provided which is capable of reducing the occurrence of defective display due to variations in the initial alignment direction of a liquid crystal alignment control film in a liquid crystal display of an ips scheme, realizing the stable liquid crystal alignment, providing excellent mass productivity, and having high image quality with a higher contrast ratio. The liquid crystal display has a liquid crystal layer disposed between a pair of substrates, at least one of the substrates being transparent, and an alignment control film formed between the liquid crystal layer and the substrate.
Panasonic Liquid Crystal Display Co., Ltd.

Liquid crystal composition and liquid crystal display device

A liquid crystal composition satisfying at least one characteristic such as high maximum temperature, low minimum temperature, small viscosity, suitable optical anisotropy, large negative dielectric anisotropy, large specific resistance, high stability to uv light, to heat or the like, or having a suitable balance regarding at least two of the characteristics, and an am device having characteristics such as a short response time, a large voltage holding ratio, a low threshold voltage, a large contrast ratio and a long service life are shown. The liquid crystal composition contains a specific compound having at least three polymerizable groups, and the liquid crystal display device includes the composition.
Jnc Petrochemical Corporattion

Liquid crystal display panel and display device

The present invention relates to a liquid crystal display panel and a display device. The liquid crystal display panel comprises a first substrate and a second substrate assembled in an aligned manner, and further comprises a reflecting layer, a light wavelength conversion layer and a quantum dot layer; the reflecting layer is provided on the second substrate, the quantum dot layer is provided on the first substrate or the second substrate, and the reflecting layer and the quantum dot layer are arranged in a direction from the second substrate to the first substrate; the light wavelength conversion layer is made from an upconversion material and provided between the reflecting layer and the quantum dot layer.
Boe Technology Group Co., Ltd.

Liquid crystal display device

The subject is to show liquid crystal display device that has characteristics such as a short response time, a large voltage holding ratio, a low threshold voltage, a large contrast ratio, a long service life and a small flicker rate. The disclosure relates to a liquid crystal display device including an electrode group formed on one or both of a pair of substrates that are opposed to each other, and a plurality of active devices connected to the electrode group, and a liquid crystal alignment film formed on the opposing surfaces of the pair of substrates, and a liquid crystal composition sandwiched in between the pair of substrates..
Jnc Petrochemical Corporation

Electronic device display with switchable film structures

An electronic device may generate content that is to be displayed on a display. The display may have an array of liquid crystal display pixels for displaying image frames of the content.
Apple Inc.

Transmission device, transmission method, reception device, and reception method

To favorably transmit both of hdr image data and ldr image data. First transmission image data and second transmission image data are divided into layers and encoded, the first transmission image data being obtained by applying photo-electric conversion to first input image data having a contrast ratio of from 0 to 100% to brightness of a white peak of a conventional ldr image, and the second transmission image data being obtained by applying photo-electric conversion to second input image data having a contrast ratio of from 0 to 100%*n (n is a number larger than 1), the contrast ratio exceeding the brightness of the conventional white peak, and a video stream having encoded image data of pictures of the layers is generated.
Sony Corporation

Display device and electronic device

A display device has an ntsc ratio of higher than or equal to 80% and a contrast ratio of higher than or equal to 500 and includes a display portion. In the display portion, pixels are provided at a resolution of greater than or equal to 80 ppi, and the pixels each includes a light-emitting module capable of emitting light with a spectral line half-width of less than or equal to 60 nm in a response time of shorter than or equal to 100 μs.
Semiconductor Energy Laboratory Co., Ltd.

Liquid crystal composition and application thereof

Disclosed is a liquid crystal composition and use thereof. The liquid crystal composition comprises components a, b and c; wherein component a is selected from one of the compounds represented by formula i; component b is a liquid crystal composition having a dielectric anisotropy of greater than 3; and component c is a liquid crystal composition having a dielectric anisotropy of −3 to 3.
Shijiazhuang Chengzhi Yonghua Display Materials Co., Ltd.

Rubbing alignment alignment layer

The present invention provides a rubbing alignment method of an alignment layer, comprising steps of: step 1, providing a substrate (10), and coating an alignment layer (4) on the substrate (10); step 2, providing a rubbing roller (5), and employing the rubbing roller (5) to implement a first rubbing alignment to the alignment layer (4) according to a first rubbing direction; step 3, employing the rubbing roller (5) to implement a second rubbing alignment to the alignment layer (4) according to a second rubbing direction, and the second rubbing direction is opposite to the first rubbing direction. The rubbing alignment method of the alignment layer can effectively eliminate the rubbing shadow to prevent the uneven rubbing alignment and the liquid crystal alignment disorientation to make the liquid crystals in an orderly arrangement.
Wuhan China Star Optoelectronics Technology Co., Ltd.

Compensation a display apparatus

A display apparatus and method are provided for at least partially compensating for undesirable image degradation arising from the processing of a generated image prior to display at a viewing surface, such as a combiner. The degradation is such that a viewer perceives a reduction in contrast ratio of a portion of the image content appearing in one or more regions of the field of view of the display, for example against an external scene being viewed through the combiner.
Bae Systems Plc

Organic light emitting display panel and display apparatus

The present disclosure relates to an organic light emitting display panel and a display apparatus. The organic light emitting display panel includes: a first substrate provided with a plurality of pixels each comprising an organic light emitting diode; a second substrate having at least one auxiliary electrode electrically connected to a cathode of the organic light emitting diode, each auxiliary electrodes being located on a side of the second substrate facing the first substrate and corresponding to a gap between adjacent pixels on the first substrate; and an antireflection layer formed on the auxiliary electrode for absorbing light rays directed to the auxiliary electrode.
Boe Technology Group Co., Ltd.

Display apparatus and display displaying image

A display apparatus and a display method for displaying an image. The display method includes: receiving image frames; detecting motion values of front and back image ones of the received image frames; analyzing the detected motion values to determine whether a scene change occurs each preset time unit; and adjusting a brightness value of an image frame to be displayed according to whether the scene change occurs.
Samsung Electronics Co., Ltd.

Liquid crystal display

A liquid crystal display capable of reducing light leakage and improving contrast ratio is presented. The display includes: a lower display substrate including a thin film transistor and a pixel electrode connected thereto; an upper display substrate facing the lower display substrate; and a liquid crystal layer disposed between the lower display substrate and the upper display substrate, wherein the lower display substrate includes: a data line; a first color filter and a second color filter configured to cover at least a portion of the data line, the first color filter and the second color filter being disposed to overlap each other on the data line; and an opaque shielding electrode disposed on the first and second color filters and overlapping the data line..
Samsung Display Co., Ltd.

Liquid crystal composition and liquid crystal display device

A liquid crystal composition satisfying at least one of characteristics such as a high maximum temperature of nematic phase, a low minimum temperature of nematic phase, small viscosity, suitable optical anisotropy, large dielectric anisotropy, large specific resistance, and high stability to uv light and heat, or having a suitable balance regarding at least two thereof, and an am device including the composition and having a short response time, a large voltage holding ratio, a large contrast ratio or a long service life are shown. The composition has the nematic phase and contains a specific compound having large dielectric anisotropy as a first component, a specific compound having small viscosity as a second component, and may contain a specific compound having a high maximum temperature or small viscosity as a third component and a specific compound having large dielectric anisotropy as a fourth component.

Vehicle headlamp unit and vehicle headlamp system

A vehicle headlamp unit for irradiating light in front of the vehicle with a high contrast ratio and is capable of sufficiently cutting off the illumination light is provided. The unit includes a light source, a parallel optical system that produces parallel light, a polarizing beam splitter that splits light emitted from the parallel optical system into two polarized beams having polarization directions orthogonal to each other, a reflection-type liquid crystal element capable of switching between a first state where the light emitted from a first surface of the polarizing beam splitter is reflected without rotation of the polarization direction, and a second state where the light is reflected with rotation of the polarization direction, in each predetermined section, and a projection optical system that projects light, reflected by the reflection-type liquid crystal element and passed through the polarizing beam splitter once again, in front of the vehicle..
Stanley Electric Co., Ltd.

Dichroic-dye-doped isotropic chiral liquid crystals

Disclosed are polarization-independent electro-optical compositions using dichroic-dye-doped polymer stabilized optically isotropic chiral liquid crystals. The isotropic phase of such compositions can be well maintained even if the temperature is below 0° c.
East China University Of Science And Technology

Liquid crystal composition and liquid crystal display device

A liquid crystal composition satisfying at least one of characteristics such as a high maximum temperature of nematic phase, a low minimum temperature of nematic phase, small viscosity, suitable optical anisotropy, large positive dielectric anisotropy, large specific resistance, high stability to uv light and heat or a large elastic constant, or having a suitable balance regarding at least two of the characteristics, and an am device having a short response time, a large voltage holding ratio, a low threshold voltage, a large contrast ratio and a long service life, etc. Are described.
Jnc Petrochemical Corporation

Ultrasound image formation and/or reconstruction using multiple frequency waveforms

Ultrasound adaptive imaging methods and/or systems provide for modification of waveform generation to drive a plurality of transducer elements. The modification may be based on at least one of contrast ratio or signal to noise ratio as determined with respect to control points in a region of interest.
Regents Of The University Of Minnesota

Additive particles for improving optical performance of an electrophoretic display

The present invention is directed to an electrophoretic fluid which comprises additive particles. The concentration of the additive particles in the electrophoretic fluid is 2.5% to 25% by weight and the additive particles are not seen at the viewing side during operation of the display.
E Ink California, Llc

Liquid crystal composition and liquid crystal display device

A liquid crystal composition having a suitable balance regarding at least one or two of characteristics such as a high maximum temperature of a nematic phase, a low minimum temperature of the nematic phase, small viscosity, suitable optical anisotropy, large positive dielectric anisotropy, large specific resistance, high stability to ultraviolet light and heat or a large elastic constant; and an am device having a short response time, a large voltage holding ratio, a low threshold voltage, a large contrast ratio or a long service life. The composition has positive dielectric anisotropy and contains a specific compound having high stability to ultraviolet light as a first component, and a liquid crystal display device includes the composition..
Jnc Petrochemical Corporation

Liquid crystal composition and liquid crystal display device

A liquid crystal composition satisfying at least one characteristic such as high maximum temperature of a nematic phase, low minimum temperature thereof, small viscosity, suitable optical anisotropy, large negative dielectric anisotropy, large specific resistance, high stability to ultraviolet light, heat or the like, or having a suitable balance regarding at least two of the characteristics; and an am device having characteristics such as short response time, a large voltage holding ratio, low threshold voltage, a large contrast ratio and a long service life. The liquid crystal composition contains a compound that can contribute to high stability to heat or ultraviolet light, has negative dielectric anisotropy and the nematic phase..
Jnc Petrochemical Corporation

Multi-half-tone imaging and dual modulation projection/dual modulation laser projection

Smaller halftone tiles are implemented on a first modulator of a dual modulation projection system. This techniques uses multiple halftones per frame in the pre-modulator synchronized with a modified bit sequence in the primary modulator to effectively increase the number of levels provided by a given tile size in the halftone modulator.
Dolby Laboratories Licensing Corporation

Display systems and methods employing screens with an array of micro-lenses or micro-mirrors

An immersive display system is disclosed that includes screens configured to mitigate reduction in contrast ratio due at least in part to peripheral light incident on the screens. The immersive display system includes at least one screen having an array of micro-lenses, a light polarization layer on top of the array of micro-lenses, a polarization rotation layer, a light reflection layer, and a section of non-polarizing light scattering material for individual micro-lenses in the array of micro-lenses.
Barco, Inc.

Liquid crystal composition and liquid crystal display device

A liquid crystal composition satisfying at least one of characteristics such as high maximum temperature, low minimum temperature, small viscosity, suitable optical anisotropy, large negative dielectric anisotropy, large specific resistance, high stability to ultraviolet light and heat, or having a suitable balance regarding at least two of the characteristics; and an am device having characteristics such as short response time, a large voltage holding ratio, low threshold voltage, a large contrast ratio and long service life are provided. The composition has negative dielectric anisotropy and contains a specific compound having large negative dielectric anisotropy as a first component, a specific compound having small viscosity as a second component, and may contain a specific compound having high maximum temperature or small viscosity as a third component, a specific compound having negative dielectric anisotropy as a fourth component, or a specific compound having a polymerizable group as an additive component..

Electronic device and projecting screen adjustment

An electronic device including a projection unit, an ambient light sensor and a processing unit is provided. The projection unit has a projection lens fixed on a side surface of the electronic device.
Acer Incorporated

Laser-markable insulation material for wire or cable assemblies

The present disclosure is directed to laser-markable insulation material and cable or wire assemblies containing such insulation material. In certain embodiments, the laser-markable insulation material can include a fluoropolymer and an inorganic laser-markable pigment.
Saint-gobain Performance Plastics Corporation

Driving electrophoretic display

A driving method of an electrophoretic display having at least one display particle is provided. The driving method includes the following steps.
Sipix Technology Inc.

Optimizing the legibility of displayed text

Input data may define an approach, model or theme for presenting text in a two-dimensional or a three-dimensional display environment. The input data may be analyzed to determine a legibility score of the text.
Microsoft Technology Licensing, Llc

Liquid crystal composition and liquid crystal display device

A liquid crystal composition having at least one or a suitable balance regarding at least two of characteristics such as high maximum temperature of a nematic phase, low minimum temperature thereof, small viscosity, suitable optical anisotropy, large negative dielectric anisotropy, large specific resistance, high stability to ultraviolet light or heat and a large elastic constant; an am device having characteristics such as short response time, a large voltage holding ratio, low threshold voltage, a large contrast ratio and long service life are described. The liquid crystal composition has negative dielectric anisotropy, and contains a specific compound having negatively large dielectric anisotropy and a large elastic constant as a first component, and may contain a specific compound having high maximum temperature or small viscosity as a second component, a specific compound having negative dielectric anisotropy as a third component, and a specific compound having a polymerizable group as an additive component..
Jnc Petrochemical Corporation

Liquid crystal composition and liquid crystal display device

To provide a liquid crystal composition satisfying at least one of characteristics such as high maximum temperature, low minimum temperature, small viscosity, suitable optical anisotropy, large negative dielectric anisotropy, large specific resistance, high stability to ultraviolet light and heat, or having a suitable balance regarding at least two of the characteristics; and an am device having characteristics such as short response time, a large voltage holding ratio, low threshold voltage, a large contrast ratio and long service life. The composition has negative dielectric anisotropy and contains a specific compound having large negative dielectric anisotropy as a first component, a specific compound having small viscosity as a second component, and may contain a specific compound having high maximum temperature or small viscosity as a third component, a specific compound having negative dielectric anisotropy as a fourth component, or a specific compound having a polymerizable group as an additive component..
Jnc Petrochemical Corporation

Display systems and methods employing polarizing reflective screens

An immersive display system is disclosed that includes screens configured to mitigate reduction in contrast ratio due at least in part to peripheral light incident on the screens. The immersive display system includes at least two screens and at least two projector systems.
Barco, Inc.

Display systems and methods employing wavelength multiplexing of colors

An immersive display system is disclosed that includes screens configured to mitigate reduction in contrast ratio due at least in part to peripheral light incident on the screens. The immersive display system includes at least two screens and at least two projector systems.
Barco, Inc.

Display systems and methods employing time multiplexing of projection screens and projectors

An immersive display system is disclosed that includes screens configured to mitigate reduction in contrast ratio due at least in part to peripheral light incident on the screens. The immersive display system includes at least two screens and at least two projector systems.
Barco, Inc.

Electronic device, code display electronic device and recording medium

An electronic device includes a display unit, a memory and a processor. The display unit displays at least one of a first display representing a code display and a second display representing a display other than the code display.
Casio Computer Co., Ltd.

Liquid crystal composition and liquid crystal display device

A liquid crystal composition satisfies at least one of characteristics such as a high maximum temperature, a low minimum temperature, small viscosity, suitable optical anisotropy, large negative dielectric anisotropy, large specific resistance, high stability to ultraviolet light, to heat or the like, or has a suitable balance regarding at least two of the characteristics; and an am device has characteristics such as a short response time, a large voltage holding ratio, a low threshold voltage, a large contrast ratio and a long service life. The liquid crystal composition contains a specific compound having at least two polymerizable groups, and the liquid crystal display device includes the composition.
Jnc Corporation

Electrochromic devices

An electrochromic device includes a first substantially transparent substrate having an electrically conductive material associated therewith, a second substantially transparent substrate having an electrically conductive material associated therewith, an electrochromic composition contained within a chamber positioned between the first and second substrates that includes at least one anodic electroactive material, at least one cathodic electroactive material, and at least one solvent, wherein at least one of the anodic electroactive and cathodic electroactive materials is electrochromic, and wherein the electrochromic device exhibits a contrast ratio of at least 20,000:1, a darkening time less than about 30 seconds, and a clearing time of less than about 150 seconds.. .
Gentex Corporation

Liquid crystal composition and liquid crystal display device

A liquid crystal composition having at least one or a suitable balance regarding at least two of characteristic such as high maximum temperature of a nematic phase, low minimum temperature thereof, small viscosity, suitable optical anisotropy, large dielectric anisotropy, large specific resistance, high stability to ultraviolet-light or heat, or large elastic constant; an am-device having short response time, a large voltage holding ratio, low threshold voltage, a large contrast ratio, a negatively large dc brightness relaxation time constant and long-service-life. The liquid crystal composition contains a compound contributing to high stability to heat or ultraviolet-light as an additive component and a specific compound having positively large dielectric anisotropy, and a liquid crystal display device includes the composition.
Jnc Petrochemical Corporation

Light control light control element

Provided is a light control method for a light control element which can be used even as a transmission-type one, has a high-quality mirror state enabling a high contrast ratio, and enables display in multiple colors. To this end, in this light control method for a light control element, with respect to a light control element comprising a pair of substrates, a pair of electrodes formed on opposed surfaces of the pair of substrates, and an electrolyte layer sandwiched between the pair of electrodes and including an electrochromic material containing silver and a mediator, the applied voltage to be applied between the pair of electrodes is changed in one light control period..
National University Corporation Chiba University

Transparent display

A display has an array of light emitting display pixels occupying pixel areas, and a polarizing light transmissive area between the pixel areas. This polarization can be used to improve the contrast ratio of a transparent 2d display.
Koninklijke Philips N.v.



Contrast Ratio topics:
  • Contrast Ratio
  • Liquid Crystal
  • Liquid Crystal Display
  • High Contrast
  • Response Time
  • Augmented Reality
  • Electrophoretic Display
  • Electrophoretic
  • Electronic Device
  • Anisotropy
  • Visibility
  • Ultraviolet Light
  • Ultraviolet
  • Negative Dielectric Constant
  • Light Transmission


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    This listing is a sample listing of patent applications related to Contrast Ratio for is only meant as a recent sample of applications filed, not a comprehensive history. There may be associated servicemarks and trademarks related to these patents. Please check with patent attorney if you need further assistance or plan to use for business purposes. This patent data is also published to the public by the USPTO and available for free on their website. Note that there may be alternative spellings for Contrast Ratio with additional patents listed. Browse our RSS directory or Search for other possible listings.


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