42results about How to "High-contrast display" patented technology

A front light (1) includes a light source (8), a light guide plate (9), and a plurality of dots (4) that are provided on a surface of the light guide plate (9), which surface faces a light exit surface of the light guide plate (9). Each of the plurality of dots (4) includes (i) a light reflective layer (2) for reflecting light toward the light guide plate (9), and (ii) a dark layer (3) for absorbing light, the dark layer completely covering the light reflective layer (2) so as to be in contact with the light guide plate (9) without any gap between the light guide plate (9) and the dark layer (3).

A liquid crystal display device includes a first substrate and a second substrate opposed to each other with a liquid crystal layer therebetween, in which a first electrode and a second electrode are provided on a side of the first substrate opposed to the liquid crystal layer and the liquid crystal layer is driven by means of an electric field generated between the first electrode and the second electrode. A reflective display area for reflective display and a transmissive display area for transmissive display are formed in a sub pixel area. The thickness of the liquid crystal layer in the reflective display area is greater than the thickness of the liquid crystal layer in the transmissive display area. A retardation layer is selectively formed in an area corresponding to at least the reflective display area on a side of the second substrate opposed to the liquid crystal layer.

A liquid crystal display includes a first substrate and a second substrate opposite to each other with a liquid crystal layer interposed therebetween, first and second electrodes provided on a side of the first substrate facing the liquid crystal layer to drive the liquid crystal layer, and a reflecting layer provided on a part of the side of the first substrate facing the liquid crystal layer. Each pixel region includes a reflective display region where light incoming from the second substrate is reflected by the reflecting layer toward the second substrate to perform display and a transmissive display region where light incoming from the first substrate is transmitted toward the second substrate to perform display. The liquid crystal layer has horizontal alignment in an initial alignment state. A first polarizing plate is provided on a side of the first substrate opposite the liquid crystal layer, the first polarizing plate having a transmission axis parallel or perpendicular to an alignment direction of the liquid crystal layer in the initial alignment state. A second polarizing plate is provided on a side of the second substrate opposite the liquid crystal layer, the second polarizing plate having a transmission axis perpendicular to the transmission axis of the first polarizing plate. A resin layer is provided on a side of the second substrate facing the liquid crystal layer, the resin layer having a first resin layer provided in the transmissive display region and a second resin layer provided in the reflective display region. The first resin layer is a λ / 2 phase layer giving a phase difference of approximately ½ wavelength (wavelength: λ) with respect to visible light, and a slow axis of the first resin layer and the transmission axis of the first polarizing plate are disposed so as to be parallel or perpendicular to each other. The second resin layer is a λ / 2 phase layer giving a phase difference of approximately ½ wavelength with respect to visible light, and a slow axis of the second resin layer is set in a direction intersecting the alignment direction of the liquid crystal layer. A step portion is provided between the first substrate and the resin layer in order to make the thickness of the liquid crystal layer in the reflective display region smaller than the thickness of the liquid crystal layer in the transmissive display region. A slope portion having a continuously changing thickness is provided in an end portion of the step portion. The slope portion is disposed in the transmissive display region.

A display including a light source for generating light, an optical waveguide for receiving and evenly distributing light in a light propagation direction by total internal reflections and a matrix of electromechanical picture elements for modulating light to produce an image.

An electro-optic device having a plurality of pixels arranged in a matrix pattern, including: a converging substrate formed of a transparent substrate having groove-shaped prism elements formed in an array pattern, wherein the prism elements are arranged along boundary areas of the pixels, wherein the prism elements each include a plurality of beveled portions arranged on side walls thereof in the direction of the thickness of the converging substrate, and wherein the inclination angle of the beveled portions arranged on an opening end side of each of the prism elements with respect to the normal line of the converging substrate on which the prism elements are formed is smaller than the inclination angle of the other beveled portions.

A liquid crystal device includes an OCB mode liquid crystal panel including a pair of substrates and a liquid crystal layer disposed therebetween, an optical compensator provided on at least one side of the liquid crystal panel, and an optical-axis-adjusting unit that moves the optical compensator relative to the liquid crystal panel to adjust an angle formed by an optical axis of the optical compensator and an optical axis of the liquid crystal panel.

The invention provides a light guide plate, an optical module and an all-reverse display device, relating to the technical field of display and being capable of increasing the light of the light guide plate emitting to the reflection area of a display panel and further realizing high contrast display. The light guide plate includes a light incident plane, a light emitting plane, and a first plane opposite to the light emitting plane, the light guide plate further includes screen dots arranged on the first plane, the screen dots are in the shape of a groove and at least enable the light incident parallel to the light emitting plane to be emitted out at the angle of 60-90 degrees with respect to the light emitting plane.

The invention provides a pixel circuit and a driving method thereof, a display substrate and a display device, and belongs to the field of display. The pixel circuit comprises a grid signal end, a data signal end, a switch signal end and a voltage division control signal end. The pixel circuit further comprises a current source module; the current source module is configured to update the stored driving voltage according to the voltage at the data signal end when the grid signal end receives a grid driving signal and output a light-emitting current is output according to the stored driving voltage when the switch signal end receives a light-emitting control signal, wherein the current value of the light-emitting current is in positive correlation with the voltage value of the driving voltage; and the voltage division module is configured to adjust the equivalent resistance value of the voltage division module in the output path of the light-emitting current according to the signal received at the voltage division control signal end. High-contrast display of an OLED product in a low-voltage process can be realized.

Aspects of the invention provide a transflective liquid crystal display device that prevents display failure, such as an afterimage and unevenness like stains, and achieves a bright display with a wide viewing angle in both transmissive display and reflective display. The liquid crystal display device of the invention is a vertically-aligned transflective liquid crystal display device having a multigap structure. Each pixel can include, in a dot region, a plurality of islands, and connecting portions for electrically connecting the adjoining islands. Two islands, of the islands, can be disposed in a transmissive display region, and the remaining island is disposed in a reflective display region. A boundary sloping area in which the thickness of a liquid crystal layer continuously changes is disposed right below the connecting portion in the pixel electrode.

A display including a light source for generating light, an optical waveguide for receiving and evenly distributing light in a light propagation direction by total internal reflections and a matrix of picture elements constructed on the upper surface of the waveguide, the picture elements including electrically activated micro-mechanical actuators having optical properties for modulating light to produce an image.

The invention discloses a passive driving electrophoretype electronic paper device which comprises a display medium layer, an upper substrate and a lower substrate. The upper substrate and the lower substrate are arranged oppositely, and a first electrode is formed on the upper surface of the lower substrate. The first electrode comprises a public lead electrode, a display lead electrode and a display electrode. A public electrode is formed on the lower surface of the upper substrate. The public electrode is electrically connected with the public lead electrode through a transfer printing electrode. The display lead electrode is coated by an insulating layer. A second electrode is formed on the upper face of the display electrode and the insulating layer. The display lead electrode is electrically connected with the display electrode. The display electrode is electrically connected with the second electrode. The display medium layer is contained between the public electrode and the second electrode, and the display medium layer is electrically connected with the public electrode and the second electrode. The passive driving electrophoretype electronic paper device can achieve low power consumption and high contrast ratio display, and avoid the influence of the display lead electrode included in the first electrode on display content.

The invention provides a display device which includes a first electrical substrate; a second electrical substrate; a plurality of retaining walls which are arranged on the second electrical substrate so as to define a plurality of pixel areas; a plurality of color resistance units, each of which includes a color resistance area and a transparent area; and a display medium which fills each pixel area and includes a first liquid and a second liquid, wherein in each pixel area, when no voltage is applied, the first liquid completely covers a corresponding color resistance unit so as to prevent light from passing through the pixel area and when a voltage is applied, through an electrowetting effect, the first liquid aggregates to a side of a retaining wall, close to a corresponding color resistance area, so as to at least partly expose a transparent area in the color resistance unit to enable the light to at least pass through part of the transparent area. The display device has a comparatively high light transmittance and via a structure of combination of the non-transparent liquids and a color resistance array layer, the display device has a display effect of high uniformity and high contrast and a manufacturing procedure advantage of high yield.

The invention discloses a backlight source, a back plate thereof and a manufacturing method, and belongs to the field of displays. The back plate of the backlight source is provided with a light-emitting area and a binding area, wherein the light-emitting area is provided with a plurality of subareas, a set of LED (Light Emitting Diode) bonding pads are arranged in each subarea, a plurality of ICbonding pads are arranged in the binding area; each set of LED bonding pads comprises at least two LED bonding pad pairs, each LED bonding pad pair comprises an LED anode bonding pad and an LED cathode bonding pad. The set of LED bonding pads in each subarea are connected with the IC bonding pads in the binding area through an anode wire and a cathode wire. High-contrast display of the backlight source can be realized by independently controlling each subarea. Each subarea is connected with the bonding area by only requiring one anode wire and one cathode wire, so that the wiring layout on theback plate of the backlight source can be simplified.

An endoscopic diagnosis system includes a light source for simultaneously emitting at least two excitation light having different central wavelengths for exciting at least two autofluorescent substances to generate autofluorescence containing first autofluorescence whose intensity is strong in a lesion and weak in a normal region and second autofluorescence whose intensity is strong in a normal region and weak in a lesion, color filters having spectral transmission characteristics that block the excitation light and transmit the autofluorescence, image sensor for imaging autofluorescence generated from first and second autofluorescent substances contained in a subject's region under observation and dispersed by color filters to acquire first and second autofluorescence images as the at least two excitation light illuminate the region under observation, and an image sensor for image-processing and displaying the first and second fluorescence images.

A display including a light source for generating light, an optical waveguide for receiving and evenly distributing light in a light propagation direction by total internal reflections and a matrix of electromechanical picture elements for modulating light to produce an image.

A liquid crystal display device includes a first substrate and a second substrate opposed to each other with a liquid crystal layer therebetween, in which a first electrode and a second electrode are provided on a side of the first substrate opposed to the liquid crystal layer and the liquid crystal layer is driven by means of an electric field generated between the first electrode and the second electrode. A reflective display area for reflective display and a transmissive display area for transmissive display are formed in a sub pixel area. The thickness of the liquid crystal layer in the reflective display area is greater than the thickness of the liquid crystal layer in the transmissive display area. A retardation layer is selectively formed in an area corresponding to at least the reflective display area on a side of the second substrate opposed to the liquid crystal layer.

The present invention provides a LCD device providing wide viewing angle display and having an improved transmittance and contrast ratio. The present invention is a liquid crystal display device including:a first substrate;a liquid crystal layer; anda second substrate in this order toward a display face,wherein each of the first and second substrates includes a polarizer and a transparent electrode,the first substrate includes a reflector,the liquid crystal layer contains a liquid crystal material with negative dielectric anisotropy,at least one of the first and second substrates includes a λ / 4 retarder including a dielectric material,the λ / 4 retarder is arranged to overlap with the reflector when viewed from the display face, andthe λ / 4 retarder is arranged on a liquid crystal side of the transparent electrode.

To improve the display quality of a display device. To display a high-quality video regardless of a usage environment. To provide a light-weight and non-breakable display device. To reduce power consumption of a display device. The display device includes a first display element, a second display element, a light diffusion plate, and a polarizing plate. The first display element is a reflective liquid crystal element. The second display element is configured to emit visible light. The light diffusion plate and the polarizing plate are closer to a display surface side than the first display element is. The display device is configured to display an image using one or both of first light reflected by the first display element and second light emitted by the second display element.

The invention relates to a liquid crystal display comprising two glass substrates, two transparent electrode layers, and an AM-TFT substrate including the second glass substrate and the second transparent electrode layer, wherein the second transparent electrode layer includes a pixel electrode and an AM-TFT, and the AM-TFT is disposed on the second glass substrate and connected to the pixel electrode; the first and second glass substrates are spaced apart up and down; the first and second transparent electrodes are oppositely disposed between the first and second glass substrates; a molding frame is arranged around the first and second transparent electrodes; a sealing cavity is formed between the molding frame and the first and second transparent electrodes; a vertical alignment orientation layer is disposed on the first transparent electrode layer and in a serrated or wavy shape; a parallel alignment orientation layer is disposed on the second transparent electrode layer; liquid crystal is filled in the sealing cavity; and the two polarizers are respectively disposed on the outer sides of the first and second glass substrates. The product provided by the invention can realize high resolution, high contrast, fast response speed, low power consumption, high temperature and high humidity environment resistance, basically no electricity when maintaining information display, andonly power consumption when refreshing display content.

The invention discloses a VA all-perspective LCD and a manufacturing method thereof. Every independent pixel is cut by a plurality of hollowed-out small thin strips, an inclined acting force is applied to liquid crystal molecules so that the liquid crystal molecules deflect, the circumstances that initial inclination angles of liquid crystal molecules of an existing vertical alignment type liquid crystal panel are insufficient due to insufficient strength of friction of an alignment layer or uneven friction, a preset angle cannot be achieved in a working process, light cannot pass and then black spots are generated are avoided, and display characteristics of ultra-wide visual angle, high-contrast display, zero chromatic dispersion and the like are realized. In addition, an existing conventional VA production line is not required to be improved, and the VA all-perspective LCD can be produced directly on the basis of the conventional VA production line.