34results about How to "Improve picture contrast" patented technology

Systems and methods are provided for improving the visual quality of low resolution and / or low frame rate video content displayed on large-screen displays. A video format converter may be used to process a low resolution and / or low frame rate video signal from a media providing device before the video is displayed. The video format converter may detect the true resolution of the video and deinterlace the video signal accordingly. The video format converter may also determine the frame rate of a video and may increase the frame rate if the received frame rate is below a certain threshold. For videos that are also low in quality, the video format converter may reduce compression artifacts and apply techniques to enhance the appearance of the video.

A method for enhancing the contrast of video pictures that includes the steps of receiving an input video signal; extracting a picture from said input video signal; determining an active window for said picture; calculating a histogram for luminance values of pixels in said active window of said picture; determining characteristics of said histogram; selecting one suitable mapping function from a plurality of mapping functions based on the determined characteristics of said histogram; and mapping the luminance value of each pixel in said picture in accordance with said selected mapping function.

This invention relates to a processing device and processing method of high dynamic contrast for liquid crystal display apparatus, the processing device comprises a receiver, an inverter, and a source driving IC connected with a central processing module. The processing method includes: performing a histogram statistical process on received low voltage Differential Signaling data; obtaining a backlight source dimming coefficient and a Gamma reference voltage parameter of the same frame of picture according to the result of the histogram statistical process. controlling the brightness of the backlight source according to said backlight source dimming coefficient; controlling the voltage of the pixel capacitor on the liquid crystal panel according to said Gamma reference voltage parameter. This invention respectively adjusts the brightness of the backlight source and the voltage of the pixel capacitor of the liquid crystal panel simultaneously, and hence the dynamic contrast of the picture is increased, the problems of lower contrast and flicker of TFT liquid crystal display apparatus are ameliorated, and the power consumption of the backlight source is saved.

The invention provides an OLED driving system and driving method for improving the contrast of a picture. According to the OLED driving system and driving method, an OLED display panel (4) is equally partitioned into a plurality of display sub-regions along a vertical direction; average pixel brightness corresponding to the display sub-regions in the OLED display panel (4) is calculated through a brightness calculation module (2); a power source management module (2) correspondingly provides different reference voltages for the display sub-regions according to the average pixel brightness of the display sub-regions in the OLED display panel (4), and inserts the reference voltages of the display sub-regions into reference voltage lines of middle row pixels of corresponding display sub-regions, so that the reference voltages of the display sub-regions can be different, and therefore, the contrast of the picture can be improved; an image compensation module (5) compensates picture data of one frame of picture according to the average pixel brightness of the display sub-regions in the OLED display panel (4), so that the display quality of the picture can be ensured.

The invention discloses a holographic projection display system for scene representation, relating to the technical field of 3D display. The holographic projection display system comprises a three-dimensional display module, an auxiliary light source, a projection screen, a motion following drive module, a human eye recognition module and a processor, wherein the processor controls the three-dimensional display module to project a picture on a projection screen; the light of the auxiliary light source is projected to the projection screen for picture modulation to form a hologram, so that a 3D picture can be watched; the human eye recognition module is capable of positioning the position of human eyes, the processor controls the motion following drive module to act through analysis and processing of the processor, the motion following drive module is connected with the three-dimensional display module or the projection screen, and controls the three-dimensional display module and the projection screen to move, and the human eyes and the three-dimensional display module are in a mirror image position relative to the projection screen, so that the condition that a person can receive the clear 3D picture during movement is ensured. The overall projection system is simple in structure, small in occupied space and low in production cost, and meanwhile, the effect of watching the 3D image through naked eyes can be achieved.

Systems and methods are provided for improving the visual quality of low resolution and / or low frame rate video content displayed on large-screen displays. A video format converter may be used to process a low resolution and / or low frame rate video signal from a media providing device before the video is displayed. The video format converter may detect the true resolution of the video and deinterlace the video signal accordingly. The video format converter may also determine the frame rate of a video and may increase the frame rate if the received frame rate is below a certain threshold. For videos that are also low in quality, the video format converter may reduce compression artifacts and apply techniques to enhance the appearance of the video.

The invention discloses a contact-type excitation light source used for a fluorescence imaging detecting system, belonging to an auxiliary device capable of enhancing the imaging effect of the fluorescence detection device. According to the design, the contact-type excitation light source is in direct contact with the skin or the surface of the body tissue, therefore, exciting light reflected by the skin and the surface of the other body tissue can be shielded by the device, while the fluorescence generated by the exciting light penetrating through the skin or the other body tissue which irradiates the IGG can penetrate through an observation channel in the center of the device and be received by the fluorescence detection device. With the adoption of the device, the useless exciting light reflected back to the fluorescence detection device by the skin or the surface of the body tissue is well blocked, therefore, the influences of the large amount of reflected exciting light on the picture are eliminated, the signal to noise ratio of the picture is improved, and the effect of the picture is enhanced. The contact-type excitation light source can be widely applied to the technical fields of sentinel node biopsy, heart bypass surgery, venous flap detection and the like.

The invention discloses a micro light-emitting diode display panel and a display device. The micro light-emitting diode display panel comprises an upper substrate, a lower substrate, an upper electrode, a lower electrode, a first micro light-emitting diode, a second micro light-emitting diode, a third micro light-emitting diode and an image sensor array, wherein the upper substrate and the lower substrate are arranged in a spacing mode in a first direction; the upper electrode is arranged at the side, close to the lower substrate, of the upper substrate, and the lower electrode is arranged atthe side, close to the upper substrate, of the lower substrate; and the first micro light-emitting diode, the second micro light-emitting diode, the third micro light-emitting diode and the image sensor array are all arranged between the upper electrode and the lower electrode, and the first micro light-emitting diode, the second micro light-emitting diode, the third micro light-emitting diode andthe image sensor array are distributed in a spacing mode along a second direction. The micro light-emitting diode display panel has a scanning function in addition to excellent display performance.

The invention provides a dotted building glass curtain wall projection imaging film. The projection imaging film comprises a light-transmitting base film layer, wherein a plurality of reflecting elements are arrayed on the light-transmitting base film layer; the reflecting elements cover the light-transmitting base film layer; every two adjacent reflecting elements have a separated region; the regions of the light-transmitting base film layer opposite to the separated regions are light-transmitting elements. By using the projection imaging film of the structure, the light-transmitting elements can transmit light to keep normal illumination intensity in a building; the reflecting elements can reflect projection light, so that the projection quality of a building glass curtain wall is improved.

The invention provides a projection imaging film for a glass curtain wall of a building. The projection imaging film comprises a base film layer, wherein a plurality of light transmitting elements are arrayed on the base film layer, a plurality of reflecting elements are further arrayed on the base film layer, and the light transmitting elements and the reflecting elements are mutually spaced. The plurality of light transmitting elements and the plurality of reflecting elements are arrayed on the base film layer and mutually spaced, and light transmitting elements can transmit light to keep the normal illumination intensity inside the building; and the reflecting elements can reflect the projection light, so that the projection quality of the glass curtain wall of the building is improved.

A multi-domain vertical alignment liquid crystal display panel comprising a first substrate, a second substrate, a liquid crystal layer and a plurality of phase-compensating protrusions is provided. The second substrate is configured above the first substrate. The liquid crystal layer is formed between first substrate and the second substrate. The phase-compensating domain regulating protrusions are formed on at least one of the first substrate and the second substrate. The phase-compensating domain regulating protrusions have a plurality of anisotropic birefringence molecules. The slow-axes of the anisotropic birefringence molecules are in a different direction from the slow-axes of the liquid crystal molecules near the phase-compensating protrusions. Therefore, the plurality of anisotropic birefringence molecules can compensate for the phase retardation here, thereby improving the light leakage in the dark state.

The invention provides a liquid crystal lens. The liquid crystal lens comprises an upper substrate, a lower substrate, a liquid crystal layer and spacers, wherein the liquid crystal layer and the spacers are arranged between the upper substrate and the lower substrate. The surface of each spacer is coated with a first antireflective film and a second antireflective film in sequence. The refractive index of the liquid crystal layer is n0, the refractive index of each first antireflective film is n2, the thickness of each first antireflective film is d2, the refractive index of each second antireflective film is n1, the thickness of each second antireflective film is d1, the refractive index of each spacer is n3, and then an equation shown in the description and the equation n1d1=n2d2=lambda / 6 can be obtained, wherein lambda represents light wavelength. According to the liquid crystal lens and a 3D displayer, the intensity of reflected light on the spacers can be reduced, the contrast ratio of frames can be increased, and the display effect can be enhanced.

This invention relates to a processing device and processing method of high dynamic contrast for liquid crystal display apparatus, the processing device comprises a receiver, an inverter, and a source driving IC connected with a central processing module. The processing method includes: performing a histogram statistical process on received low voltage Differential Signaling data; obtaining a backlight source dimming coefficient and a Gamma reference voltage parameter of the same frame of picture according to the result of the histogram statistical process. controlling the brightness of the backlight source according to said backlight source dimming coefficient; controlling the voltage of the pixel capacitor on the liquid crystal panel according to said Gamma reference voltage parameter. This invention respectively adjusts the brightness of the backlight source and the voltage of the pixel capacitor of the liquid crystal panel simultaneously, and hence the dynamic contrast of the picture is increased, the problems of lower contrast and flicker of TFT liquid crystal display apparatus are ameliorated, and the power consumption of the backlight source is saved.

Systems and methods are provided for improving the visual quality of low-resolution video displayed on large-screen displays. A video format converter may be used to process a low-resolution video signal from a media providing device before the video is displayed. The video format converter may detect the true resolution of the video and deinterlace the video signal accordingly. For low-resolution videos that are also low in quality, the video format converter may reduce compression artifacts and apply techniques to enhance the appearance of the video.

The invention discloses a holographic projection display system for scene representation, relating to the technical field of 3D display. The holographic projection display system comprises a three-dimensional display module, an auxiliary light source, a projection screen, a motion following drive module, a human eye recognition module and a processor, wherein the processor controls the three-dimensional display module to project a picture on a projection screen; the light of the auxiliary light source is projected to the projection screen for picture modulation to form a hologram, so that a 3D picture can be watched; the human eye recognition module is capable of positioning the position of human eyes, the processor controls the motion following drive module to act through analysis and processing of the processor, the motion following drive module is connected with the three-dimensional display module or the projection screen, and controls the three-dimensional display module and the projection screen to move, and the human eyes and the three-dimensional display module are in a mirror image position relative to the projection screen, so that the condition that a person can receive the clear 3D picture during movement is ensured. The overall projection system is simple in structure, small in occupied space and low in production cost, and meanwhile, the effect of watching the 3D image through naked eyes can be achieved.

A liquid crystal panel and a liquid crystal display exhibiting excellent screen contrast while suppressing color shift and unevenness in display. The liquid crystal panel comprises a liquid crystal cell, a first polarizer arranged on one side of the liquid crystal cell, a second polarizer arranged on the other side of the liquid crystal cell, and at least two optical compensation layers including first and second optical compensation layers arranged between the first and second polrizers. The first optical compensation layer has the absolute value of photoelasticity coefficient not larger than 4010<-12> (m<2> / N) and has relations expressed by formulas (1) and (2), and the second optical compensation layer has relations expressed by formulas (3) and (4). Delta nd(380)ny=nz...(2) Rth(380)>Rth(550)>Rth(780)...(3) nx=ny>nz...(4).

It is possible to provide a liquid crystal panel having an excellent screen contrast, a small color shift, and little display irregularities. The liquid crystal panel includes a liquid crystal cell, a first polarizer, a second polarizer, a protection layer, a first optical compensation layer, and a second optical compensation layer. A layer to be protected satisfies the relationships: 0 nm<=delta nd(550)<=10 nm and 0 nm<=Rth (550)<=20 nm. The first optical compensation layer has an absolute value of the optical elastic coefficient equal to or below 40*10<-12> (m<2> / N) and satisfies the relationships: delta nd(380) < delta nd(550) ny>=nz and 90 nm<=delta nd(550)<=200 nm. The second optical compensation layer satisfies the relationships: Rth (380)> Rth(550)>Rth (780) and nx=ny>nz.

The invention provides a liquid crystal display device as well as a backlight module thereof and a display method. The backlight module at least includes a lighting component, a polarization component and a modulation component. The lighting component is used for providing a light source. A first polarized light is formed after the light source passes through the polarization component. The modulation component is provided with a plurality of modulation areas. Each modulation area corresponds to one modulation direction, and a plurality of second polarized lights are formed after the first polarized light passes through the modulation areas. The second polarized lights respectively correspond to the modulation directions, wherein the modulation directions are not identical.

A plasma display panel comprises a front substrate and a rear substrate, a plurality of row electrode pairs provided on the inner surface of the front substrate, a dielectric layer provided on the inner surface of the front substrate for coverring the row electrode pairs, a plurality of column electrodes provided on the inner surface of the rear substrate, a partition wall assembly provided between the front substrate and the rear substrate, said partition wall assembly including a plurality of longitudinal partition walls and a plurality of lateral partition walls, forming a plurality of discharge cells. In particular, the dielectric layer has a plurality of projection portions located corresponding to and protruding toward the lateral partition walls of the partition wall assembly, in a manner such that there would be no slots formed between the dielectric layer and the lateral partition walls.

A plasma display panel comprises a front substrate and a rear substrate, a plurality of row electrode pairs provided on the inner surface of the front substrate, a dielectric layer provided on the inner surface of the front substrate for coverring the row electrode pairs, a plurality of column electrodes provided on the inner surface of the rear substrate, a partition wall assembly provided between the front substrate and the rear substrate, said partition wall assembly including a plurality of longitudinal partition walls and a plurality of lateral partition walls, forming a plurality of discharge cells. In particular, the dielectric layer has a plurality of projection portions located corresponding to and protruding toward the lateral partition walls of the partition wall assembly, in a manner such that there would be no slots formed between the dielectric layer and the lateral partition walls.

PURPOSE: A polarizing plate and a liquid crystal display device with high contrast are provided to improve contrast by applying a polarizer to a liquid crystal display having an emitting wavelength property. CONSTITUTION: A polarizer comprises a polarizing film. The polarizing film is formed by absorbing and growing a polyvinyl alcohol resin film with two color pigments. The cellulose acetate series region film is laminated on one side of the polarizing film through an adhesive film. A cycloolefin-based resin film is laminated on the other side of polarizing film through an adhesive film.

A multi-domain vertical alignment liquid crystal display panel comprising a first substrate, a second substrate, a liquid crystal layer and a plurality of phase-compensating protrusions is provided. The second substrate is configured above the first substrate. The liquid crystal layer is formed between first substrate and the second substrate. The phase-compensating domain regulating protrusions are formed on at least one of the first substrate and the second substrate. The phase-compensating domain regulating protrusions have a plurality of anisotropic birefringence molecules. The slow-axes of the anisotropic birefringence molecules are in a different direction from the slow-axes of the liquid crystal molecules near the phase-compensating protrusions. Therefore, the plurality of anisotropic birefringence molecules can compensate for the phase retardation here, thereby improving the light leakage in the dark state.

The invention provides a liquid crystal display device as well as a backlight module thereof and a display method. The backlight module at least includes a lighting component, a polarization component and a modulation component. The lighting component is used for providing a light source. A first polarized light is formed after the light source passes through the polarization component. The modulation component is provided with a plurality of modulation areas. Each modulation area corresponds to one modulation direction, and a plurality of second polarized lights are formed after the first polarized light passes through the modulation areas. The second polarized lights respectively correspond to the modulation directions, wherein the modulation directions are not identical.

A plasma display panel comprises a front substrate and a rear substrate, a plurality of row electrode pairs provided on the inner surface of the front substrate, a dielectric layer provided on the inner surface of the front substrate for coverring the row electrode pairs, a plurality of column electrodes provided on the inner surface of the rear substrate, a partition wall assembly provided between the front substrate and the rear substrate, said partition wall assembly including a plurality of longitudinal partition walls and a plurality of lateral partition walls, forming a plurality of discharge cells. In particular, the dielectric layer has a plurality of projection portions located corresponding to and protruding toward the lateral partition walls of the partition wall assembly, in a manner such that there would be no slots formed between the dielectric layer and the lateral partition walls.

A cholesterol liquid crystal display comprises a first substrate, a second substrate, a cholesterol liquid crystal layer, a switching element, an insulating layer and a patterned low-reflection metal conductive layer. The second substrate is arranged opposite to the first substrate. The cholesterol liquid crystal layer is arranged between the first substrate and the second substrate. The switching element is disposed on the inner surface of the first substrate, the insulating layer is disposed on the switching element, and the patterned low-reflection metal conductive layer is disposed on the inner surface of the first substrate. A part of the low-reflection metal conductive layer is electrically connected to the switching element, and the low-reflection metal conductive layer has low light transmittance.

The invention discloses a micro light emitting diode display panel and a display device, wherein the micro light emitting diode display panel comprises: an upper substrate, a lower substrate, an upper electrode, a lower electrode, a first micro light emitting diode, a second micro light emitting diode and a third micro light emitting diode A light emitting diode and an image sensor array, wherein the upper substrate and the lower substrate are arranged at intervals in the first direction; the upper electrode is arranged on the side of the upper substrate close to the lower substrate, and the lower electrode is arranged on the side of the lower substrate close to the upper substrate; The first micro light emitting diode, the second micro light emitting diode, the third micro light emitting diode and the image sensor array are all arranged between the upper electrode and the lower electrode, and the first micro light emitting diode, the second micro light emitting diode, the third micro light emitting diode and the image sensor array are arranged at intervals along the second direction. The micro light-emitting diode display panel provided by the present invention not only has excellent display performance, but also has a scanning function.

The invention discloses a contact-type excitation light source used for a fluorescence imaging detecting system, belonging to an auxiliary device capable of enhancing the imaging effect of the fluorescence detection device. According to the design, the contact-type excitation light source is in direct contact with the skin or the surface of the body tissue, therefore, exciting light reflected by the skin and the surface of the other body tissue can be shielded by the device, while the fluorescence generated by the exciting light penetrating through the skin or the other body tissue which irradiates the IGG can penetrate through an observation channel in the center of the device and be received by the fluorescence detection device. With the adoption of the device, the useless exciting light reflected back to the fluorescence detection device by the skin or the surface of the body tissue is well blocked, therefore, the influences of the large amount of reflected exciting light on the picture are eliminated, the signal to noise ratio of the picture is improved, and the effect of the picture is enhanced. The contact-type excitation light source can be widely applied to the technical fields of sentinel node biopsy, heart bypass surgery, venous flap detection and the like.

The invention provides a projection imaging film for a glass curtain wall of a building. The projection imaging film comprises a base film layer, wherein a plurality of light transmitting elements are arrayed on the base film layer, a plurality of reflecting elements are further arrayed on the base film layer, and the light transmitting elements and the reflecting elements are mutually spaced. The plurality of light transmitting elements and the plurality of reflecting elements are arrayed on the base film layer and mutually spaced, and light transmitting elements can transmit light to keep the normal illumination intensity inside the building; and the reflecting elements can reflect the projection light, so that the projection quality of the glass curtain wall of the building is improved.

The present invention relates to chiral binaphthyl compounds having a structure of chemical formula (I) and having good solubility and high helical twisting power. The chiral binaphthyl compounds as dopants in the liquid crystal compositions can help enhance the display quality of the liquid crystal panels.

The invention provides a pixel array substrate and a liquid crystal display device. The pixel array substrate comprises at least one pixel, each pixel is provided with at least one pixel electrode unit, and each pixel electrode unit comprises a main part, a gradually reducing part and a branch part. By means of the arrangement, the width of each main part is larger than the width of a metal wire so as to avoid electric field leakage of a data line, meanwhile the progressive design of the branch parts is used so as to prevent alignment errors generated between the liquid crystal display device and other laminated boards above and below the device during assembly, and then the contrast ratio of liquid display images is increased.