162results about How to "Reduce viewing angle" patented technology

A method for reconstructing a high quality image from undersampled image data is provided. The image reconstruction method is applicable to a number of different imaging modalities. Specifically, the present invention provides an image reconstruction method that incorporates an appropriate prior image into the image reconstruction process. Thus, one aspect of the present invention is to provide an image reconstruction method that requires less number of data samples to reconstruct an accurate reconstruction of a desired image than previous methods, such as, compressed sensing. Another aspect of the invention is to provide an image reconstruction method that produces a time series of desired images indicative of a higher temporal resolution than is ordinarily achievable with the imaging system. For example, cardiac phase images can be produced with high temporal resolution (e.g., 20 milliseconds) using a CT imaging system with a slow gantry rotation speed.

A novel liquid crystal display is disclosed. The display comprises a pair of substrates disposed facing each other and at least one of which has an electrode, a liquid-crystal layer being sandwiched in between the pair of substrates and comprising liquid-crystal molecules aligned along with a first alignment axis and a second alignment axis respectively formed on facing surfaces of the first and second substrates, a pair of polarizing plates disposed sandwiching the liquid-crystal layer, and at least an optically anisotropic layer disposed between the liquid-crystal layer and either of the polarizing plates, and comprising at least one liquid crystal compound which is aligned along with a third alignment axis and is fixed in the alignment state. And their disposition satisfies at least one of Condition (1): the alignment axes of the substrates are not parallel to transmission axes of the polarizing plates; and Condition (2): the alignment axis of the substrate is not parallel to the alignment axis of the optically anisotropic layer.

To improve image quality of a full-color organic EL display panel. A partition has a stacked structure formed using different materials. A lower partition has a curved shape, and an upper partition has a flat top surface. An angle formed between a plane surface connecting a lower end of a side surface with an upper end of the side surface of the upper partition and the top surface of the upper partition is less than or equal to 90°. The height of the partition is controlled to be greater than or equal to 0.5 μm and less than or equal to 1.3 μm. With such a structure, a large color organic EL display panel achieves high-definition display.

A liquid crystal display device employs a white sub-pixel among RGBW-4 sub-pixels as a view control component to realize a narrow viewing angle or a wide viewing angle in a fringe field switching mode. The LCD device comprises gate lines and data lines crossing each other to define RGBW sub-pixels on a first substrate, a thin film transistor formed at each crossing of the gate and data lines; a first common electrode in each region of the RGBW sub-pixels, a pixel electrode connected to the thin film transistor and insulated from the first common electrode, the pixel electrode having at least one slit, a second substrate attached to the first substrate, wherein the first and second substrate face each other with a liquid crystal layer interposed therebetween, and a second common electrode on the second substrate and corresponding to each W sub-pixel.

The invention provides a display device and method, relates to the technical field of display, and solves a problem that a conventional spying-resistant display device is poor in user experience. The device comprises a display panel; a visual angle adjustment panel which is disposed at a light-outgoing side of the display panel and comprises a plurality of alternate first and second regions; and a control apparatus which is connected with the visual angle adjustment panel. The control apparatus is used for controlling the first and second regions of the visual angle adjustment panel to allow light to pass when receiving a first instruction. When receiving a second instruction, the control apparatus controls the first regions of the visual angle adjustment panel to block light, and controls the second regions of the visual angle adjustment panel to allow light to pass.

The invention discloses a backlight module and a peep-proof display device, and relates to the technical field of display. The visual effect of the peep-proof display device can be improved without affecting the peep-proof effect of the peep-proof display device. The backlight module comprises a light guide plate, a lens, and a light source. The lens is disposed between the light source and the light guide plate. Light emitted by the light source goes into the light guide plate through the lens at the same incident angle. The light-out surface of the light guide plate is provided with a plurality of bumps, and the light-out surface of the light guide plate is a total reflection surface except the bump areas. The light-out surfaces of the bumps are parallel to the light-out surface of the light guide plate. Light going to the bumps is first reflected by the total reflection surface, and then goes out in a direction vertical to the light-out surfaces of the bumps after one-time total reflection. The backlight module provided by the invention is suitable for electronic display equipment in need of backlight.

A cellulose acylate film is provided and has an elasticity modulus of 4,800 MPa to 10,000 MPa in at least either a machine direction MD at film-formation time or a direction TD perpendicular to the machine direction.

A compensation film includes: a first retardation layer including a polymer; a second retardation layer including a liquid crystal having positive birefringence; and a compensation layer including a liquid crystal having a vertical alignment property, where an angle between slow axes of the first and second retardation layers is in a range of about 85 to about 95 degrees, an entire in-plane retardation (R_e0) of the first retardation layer, the second retardation layer and the compensation layer for wavelengths of 450 nm, 550 nm and 650 nm satisfy the following inequation: R_e0(450 nm)<R_e0(550 nm)<R_e0(650 nm), an in-plane retardation (R_e3) of the compensation layer for the incident light having a wavelength of about 550 nm is in a range of about zero to about 50 nm, and a thickness direction retardation (R_th3) of the compensation layer for the incident light is less than zero.

The embodiment of the invention provides a backlight source, a display device and a control method thereof, and relates to the field of display technology. While peep-proof display is achieved, a user does not need to carry about a peep-proof film, and the application range is wide. The backlight source comprises a light guide plate and a light source arranged at the outer side of at least one side face of the light guide plate. The backlight source further comprises multiple light limiting strips arranged in an array mode, the light limiting strips are arranged on the surface of a light outlet face of the light guide plate, each light limiting strip comprises two electrodes arranged oppositely and a dimming layer located between the electrodes, and the dimming layers are in a opaque and nonopaque state according to the situation whether an electric field is formed between the electrodes. The backlight source is used for the display device with the peep-proof function and the normal display function switchable.

A monochromatic chip-scale packaging (CSP) light emitting diode (LED) device with an asymmetrical radiation pattern, including a flip-chip LED semiconductor die, and a reflective structure, is disclosed. A white-light broad-spectrum CSP LED device with asymmetrical radiation pattern is also disclosed by further including a photoluminescent structure in the CSP LED device. The photoluminescent structure covers at least the upper surface of the LED semiconductor die. The reflective structure adjacent to the LED semiconductor die and the photoluminescent structure reflects at least partial light beam emitted from the edge surface of the LED semiconductor die or the edge surface of the photoluminescent structure, therefore shaping the radiation pattern asymmetrically. A method to fabricate the aforementioned CSP LED device is also disclosed. Without using additional optical lens, the CSP LED device is suitable for the applications requiring asymmetrical illuminations, while keeping the advantage of its compact form factor.

The invention discloses a display base plate, a manufacturing method thereof, a display panel and a display device. The display base plate comprises a substrate base plate, a color film layer positioned on the substrate base plate, and a flat layer positioned on the color film layer. Due to the fact that the color film layer is provided with at least one spherical groove sinking to the substrate base plate, the flat layer can form a structure similar to a convex lens array; when the refractive index of the color film layer is smaller than that of the flat layer, light can be gathered when passing through an interface between the flat layer and the color film layer; when the display base plate is applied to the display panel, a viewing angle of the display panel can be reduced, so that the peep-proof function of the display panel can be achieved without a peep-proof film; moreover, the light is gathered when passing through the interface between the flat layer and the color film layer, so that the display brightness of a positive viewing angle of the display panel can also be improved, and the power consumption of the display panel can be reduced under the same display brightness.

A display device comprising a display panel (62) having a plurality of separately addressable pixels (64) for displaying an image, a first group (64a) of said pixels being configured to provide emergent light in a first polarisation state (P), and a second group (64b) of said pixels being configured to provide emergent light in a second polarisation state (S), a barrier layer (68) in optical association with the display panel to partially occlude said emergent light, the barrier layer having a first plurality of regions (72) for passing light in one of the first or second polarisation states, and a second plurality of regions (74) for passing light in the other of the first and second polarisation states and a third plurality of regions (76) for occluding said emergent light, and wherein the first (72) and second (74) regions of the barrier layer are respectively registered with the first (64a) and second (64b) groups of pixels so as to provide different views of an image displayed by said display panel.

A liquid crystal display device includes a liquid crystal cell, first and second polarizers disposed outside the liquid crystal cell, first and second retardation plates arranged between the first and second polarizers, and the liquid crystal cell, and optical layers arranged between the first and second retardation plates and the liquid crystal cell. The first and second retardation plates have lagging axes perpendicular with each other. The first polarizer has an absorption axis inclining by about 45 degrees relative to the lagging axis of the first retardation plate, and inclining by about 90 degrees relative to an absorption axis of the second polarizer. The absorption axes of the first and second polarizers are angularly deviated such that characteristic of a viewing angle in the liquid crystal display device is rendered symmetric, relative to a symmetry axis about which liquid crystal is aligned in different directions.

A pointer positioning device for positioning an aiming point on a display screen of an image display comprises at least one auxiliary point, an image sensor and an optical filter. The auxiliary point is disposed at the peripheral of the display screen for generating a predetermined spectrum. The image sensor receives signals of the predetermined spectrum generated by the auxiliary point. The optical filter is disposed in front of the image sensor for filtering out spectrum outside the predetermined spectrum such that the image sensor can merely sense the signals of the predetermined spectrum, wherein the auxiliary point is utilized as a reference point for correcting an initial setup and positioning the aiming point so as to position the aiming point inside a predetermined range on the display screen. The present invention also provides a pointer positioning method adapted to the pointer positioning device.

This invention provides a non-contact measurement method and device to multiple enlarge measurement range, which comprises: using two cameras to form the picture shoot part of the extensometer, ensuring some overlap area of the sight angles of two cameras; for tension test, when two index lines on sample within the first camera range together, using the first camera to acquire picture and determine the distance of lines; when the line move to overlap area, switching the picture; then, using the picture from the first/second camera to determine the distance between the lower/upper line and switch place, adding two distance values to determine the distance of two lines; when the lower line moves over the switch place, using the second camera to acquire picture and determine distance between lines.