945results about How to "Increase display brightness" patented technology

A display apparatus includes a display unit having a display screen divided into a plurality of regions and controlled using an aperture ratio on a pixel-by-pixel basis, a backlight including a plurality of sets of light sources, each set being disposed so as to correspond to one of the regions, and a control unit for detecting display luminance in each region, computing the emission luminance of each light source on the basis of the detected display luminance while taking into account an effect on the region of the other light sources not corresponding to the region, and computing a correction value for each pixel on the basis of a shift amount between the set emission luminance and an optimal display luminance for one of the regions, and delivering a display driving signal generated on the basis of the correction value to each pixel so as to control the aperture ratio.

Improved apparatus and methods for spatial light modulation are disclosed which utilize optical cavities having both front and rear reflective surfaces. Light-transmissive regions are formed in the front reflective surface for spatially modulating light.

A polymer-dispersed liquid crystal based display is embedded inside a lightguide illuminator sheet which provides illumination of the display without the need for a backlight or frontlight. Light from one or more light sources is coupled into the lightguide sheet and is guided within a range of high angles of incidence within the sheet by total internal reflection. The guided light illuminating portions of the display which are in diffusing state is scattered such that some of the light is allowed to escape total internal reflection, providing visibility of the display. Guided light illuminating portions of the display which are in non-diffusing state remains guided within the lightguide illuminator sheet. Combining multiple lightguide embedded displays can be used to provide a three-dimensional display. When a low refractive index cladding is applied to the surfaces of the lightguide embedded display, the display is robust in a dirty environment, and / or can be laminated to adjacent lightguide embedded displays. The use of one or more coupled light sources, such as light emitting diodes, provides color by combining one or more colored light sources or by time-sequentially driving one or more colored light sources. The lightguide illuminator embedded display may further be used as a content dependent active backlight for an LCD display panel to provide improved dynamic contrast.

A wedge-shaped light extractor having a light-redirecting surface with a plurality of projections having a riser segment, a plateau segment, and a facet segment, with land segments flanking the projections. The projections improve extraction efficiency, thereby facilitating use of available light from a light source.

Disclosed is an imaging directional backlight polarization recovery apparatus including an imaging directional backlight with at least a polarization sensitive reflection component with optional polarization transformation and redirection elements. Viewing windows may be formed through imaging individual light sources and hence defines the relative positions of system elements and ray paths. The base imaging directional backlight systems provide substantially unpolarized light primarily for the illumination of liquid crystal displays (LCDs) resulting in at least 50% loss in light output when using a conventional sheet polarizer as input to the display. The invention herein introduces a polarization sensitive reflecting element to separate desired and undesired polarization states for the purposes of transformation and redirection of the reflected light for usable illumination. Polarization transformation and redirection can be provided by additional components such as retarder films and specular mirror surfaces.

The invention provides electroluminescent (EL) elements, such that a red EL light source, a green EL light source and a blue EL light source emit red color light, green color light, and blue color light, respectively, and are disposed at the rear of liquid crystal display elements. Each EL light source includes an organic EL element in which an organic thin film emits light. Each EL light source has a structure in which an organic luminescent layer is sandwiched between an indium tin oxide (ITO) electrode and a metal electrode which have striped patterns which are orthogonal to each other, and sections (luminescent sections) at which the striped patterns of the ITO electrode and the metal electrode intersect with each other emit light. The luminescent sections are arrayed two-dimensionally on a glass substrate and illuminate the entire display area of the liquid crystal display element.

A device having touch sensor input functionality, comprises first and second control electrodes (40,42) lying in a common plane. The device is operable in at least two modes, comprising: a first mode in which the light transmission characteristics are altered by controlling the movement of the charged particles under the influence of control signals applied to the first and second control electrodes; and a second mode in which the first and second control electrodes are coupled to a capacitance sensing means, for detecting a change in capacitance caused by the proximity of an object to be detected.

A display apparatus has a switchable birefringent lens array. The display apparatus produces a substantially linearly polarised output. The lens array comprises birefringent material arranged between a planar surface of a first substrate and a relief substrate of a second substrate defining an array of cylindrical lenses. The lens array has electrodes for applying a control voltage across the birefringent material for electrically switching the birefringent material between a first mode and a second mode. In the first mode the lens array modifies the directional distribution of incident light polarised in a predetermined direction. In the second mode the lens array has substantially no effect on incident light polarised in said predetermined direction.

A transmission-type display panel according to the present invention includes a plurality of transparency control regions arranged in an array, a non-transparent border region existing around each of the transparency control regions, and a microlens array including a plurality of microlenses arranged in an array so as to correspond to the plurality of transparency control regions. Each of the microlenses serves to converge incident light, which is about to advance straight to the non-transparent border region, into corresponding one of the transparency control regions. The microlens array is formed by use of a transparent diamond-like carbon (DLC) film. The DLC film includes a region having its refractive index modulated corresponding to each of the microlenses, and produces a light convergence effect when light flux passes through the region having its refractive index modulated. By applying the microlens array in the DLC film to a transmission-type display panel (e.g., a liquid crystal display panel), it is possible to provide a transmission-type display panel having improved display brightness, in a simple manner and at a low cost.

A display panel includes a first substrate, a second substrate, a liquid crystal layer, a first polarizer, a second polarizer and a viewing angle control layer. The second substrate faces the first substrate. A liquid crystal layer is disposed between the first substrate and the second substrate. A first polarizer is disposed on a lower surface of the first substrate and includes a first polarizing layer and a second polarizing layer stacked on each other. A second polarizer is disposed on an upper surface of the second substrate. A viewing angle control layer is disposed on the first polarizer and is configured to control a viewing angle of a column direction of the display panel.

The invention provides a preparation method of an array substrate, the array substrate and a display device. The array substrate comprises a substrate, anode layers, pixel definition layers, auxiliarycathode layers, spacer layers, an organic light-emitting layer and a cathode layer, wherein the anode layers and the pixel definition layers are formed on the substrate in a patterning manner; the auxiliary cathode layers and the spacer layers are arranged on the corresponding pixel definition layers in a laminating manner; the organic light-emitting layer covers the anode layers, the pixel definition layers and the spacer layers; and the cathode layer covers the organic light-emitting layer and overlaps with the auxiliary cathode layers on the pixel definition layers. The auxiliary cathode layers are arranged on the corresponding pixel electrode layers and correspond to non-display areas, so that a material with low resistivity can be selected by the auxiliary cathode layers, the resistance can also be further reduced through increasing the thickness, and an IR Drop of the cathode layer overlapping with the auxiliary cathode layers is also correspondingly reduced, thereby improving the uniformity of the characteristics, such as the display brightness of a screen and improving the display quality of the screen.

A display device includes a first layer having an optically active display portion, a second layer including a photovoltaic element, and a third layer including electronics operatively coupled to the first layer, wherein the electronics are configured to drive the optically active display portion. Further, the second layer is arranged between the first and third layers.

The invention relates to the technical field of display and discloses an array substrate. The array substrate comprises a substrate and a pixel array layer located on the substrate, and also comprises a grating layer which is formed by a plurality of light blocking strips spaced at a preset distance and is used for 3D display. The grating layer is located at one side of the pixel array layer, which is back on to the substrate, or located at one side of the substrate, which faces the pixel array layer, or located at one side of the substrate, which is back on to the pixel array layer; the light blocking strips are used for reflecting light rays irradiated to the pixel array layer through the substrate. According to the array substrate disclosed by the invention, the grating layer is arranged at one side of the array substrate, which is back on to the pixel array layer, and the light blocking strips of the grating layer can be used for reflecting the light rays irradiated to the pixel array layer through the substrate. When display is performed, the light which is emitted from a backlight source and does not transmit the grating layer is reflected to the backlight source, and as the backlight source is usually provided with a light guide plate for the light to be diffused, and the light reflected to the backlight source is reflected again by the light guide plate to transmit the grating layer, the display brightness is improved.

The present invention realizes a bright image display by enhancing a numerical aperture of pixels. At least a portion of a pixel electrode is overlapped to a thin film transistor by way of a first insulation film, the pixel electrode is connected to an output electrode of the thin film transistor via a contact hole which is formed in the first insulation film, the counter electrode is arranged above the pixel electrode by way of a second insulation film in a state that the counter electrode is overlapped to the pixel electrode, the counter electrode is formed at a position avoiding the contact hole formed in the first insulation film as viewed in a plan view, and at least a portion of the counter electrode is overlapped to the thin film transistor.

The invention discloses an LCD screen and a display device, wherein a plurality of pixel units are arranged in the LCD screen, and each pixel unit is provided with a plurality of sub-pixel units displaying different colors; a quantum dot layer through which back light can penetrate is arranged in a position of an array substrate corresponding to a sub-pixel unit with at least one color of each pixel unit; the quantum dot layer emits light containing at least the color of corresponding sub-pixel unit after excited by ultraviolet light in sunlight; and a color filter is located between the quantum dot layer and an opposite substrate. When the LCD is used for displaying outdoors, the ultraviolet light in the sunlight irradiates the quantum dot layer, and the quantum dot layer emits light after excited by the ultraviolet light, so that light penetrating through the color filter is the sum of the back light and the light emitted by the quantum dot layer after the quantum dot layer is excited, the display luminance of the LCD screen is enhanced, and the viewability of the LCD outdoors is improved.

The present invention is directed to luminance enhancement structure for reflective display devices. The structure not only can enhance the brightness of a display device, but also can reduce the Moiré effect of the display device. The present invention is also directed to a display device comprising an array of microcups and a luminance enhancement structure.

In an optical sheet 10 having a prism surface 16 formed by providing unit prisms 14 on the upper surface of a transparent base material 12, a coating layer 18 is provided on the reverse surface of the transparent base material opposite to the prism surface 16, spherical beads 20 are arranged projecting from the surface of the coating layer 18 by 1 to 10 mu m in height, and the coating layer 18 is brought into contact with the flat and smooth surface 22A of the light-transmissive material 22 through the spherical beads 20 which are put between them. The spherical beads are 1 mu m or less in half bandwidth of the distribution of particle diameters and are made uniform in height projecting from the coating layer 18.

The invention discloses a head up display device based on laser holographic projection imaging, and the head up display device based on laser holographic projection imaging belongs to the field of auxiliary display. The head up display device based on laser holographic projection imaging mainly comprises a light source system, an image processing system, a spatial light modulation module and an optical light path system. First, the image processing system receives to-be-displayed content through a data interface and transforms the content into a hologram form through a hologram conversion algorithm, or selects the to-be-displayed hologram stored in the system to perform simple arithmetic processing according to external inputted information, or directly outputs and displays on the spatial light modulation module; second, one (monochromatic) or a plurality of (chromatic) laser beams are emitted on the spatial light modulation module, and an original image is formed through diffraction in front of the spatial light modulation module; and last, the optical light path system is used for magnifying the imaged restored through diffraction to increase the field angle of the image. The head up display device based on laser holographic projection imaging can realize real-time dynamic adjustment of imaging distance, and the brightness of the displayed content can be changed in real time according to the ratio of the projection content area to the total projection area.

The present invention is directed to luminance enhancement structures for reflective display devices. The structure comprises columns and grooves, wherein each of said grooves has a cross-section comprising an apex angle and two edge lines. The structure increases the overall reflectance by reducing the total internal reflection, and as a result, the brightness of a display device is increased.

The invention provides a colour filter layer, a colour film substrate comprising the colour filter layer and a display device comprising the colour film substrate, belongs to the display technical field and can solve the problem that light utilization rate of the colour film substrate is low in the prior art. The colour filter layer comprises a filter film and a light conversion material layer arranged at an incident side of the filter film. The colour filter layer is provided with the light conversion material layer, so that lights at other frequencies in incident lights can be converted into lights consistent with spectral properties of each filter film, the effects of increasing light utilization rate and improving display brightness are achieved, energy is effectively saved, and a display effect is effectively improved.

The present invention relates to a touch control type liquid crystal display array base panel which comprises a plurality of scanning beams, a plurality of data wires, pixel electrodes, stored capacitor electrodes and a first switch element; wherein, the data wires are perpendicular to the scanning beams, and are crossed and arranged for limiting pixel areas; the pixel electrodes are formed in the pixel areas; the stored capacitor electrodes and the pixel electrodes form a first stored capacitor; the data wires convey data signals to the pixel electrodes through the first switch element; the array base panel also comprises signal checking wires, touch control electrodes formed in the pixel arrears, a second switch element and a converter; the touch control electrodes and the storing capacitor electrodes form a second stored capacitor; the signal checking wires input or output voltage signals to the touch control electrodes through the signal checking wires; the converter is used for controlling the input or the output of the voltage signals on the signal checking wires. Therefore, the touch control type liquid crystal device of the present invention has the advantages of light weight, small thickness, low cost and high display brightness.

The present invention is directed to luminance enhancement structure for reflective display devices. The luminance enhancement structure comprises grooves and columns, wherein said grooves have a triangular cross-section and a top angle, and said grooves and columns are in alternating order and in a continuous form in one direction. The luminance enhancement structure not only can reduce the total internal reflection, but also especially can enhance the on-axis brightness of a display device.

A reflective filter serving as a multi-bandpass filter for a light source configured to emit light in a plurality of color primary wavelengths to improve color purity. The addition of a reflective / recirculation assembly reinforces and recirculates light not passed by the multi-bandpass filter back into a desired spectrum, which is subsequently passed by the multi-bandpass filter, or converts light not passed by the multi-bandpass into electrical energy for use by the system. The reflective filter, solely or along with the recirculation assembly, can be placed adjacent a conventional light source. Alternatively the multi-bandpass filter and the recirculation assembly can be placed in a modified light source, or placed in an optical stack along the path of light emission. Collimating structures that enforce the light into desired incident angle of attack onto the reflective filter can be included to enhance the efficiency of the reflective elements in the assembly.

The invention relates to the technical field of color space conversion, and discloses a method and a system for processing RGB (Red, Green, Blue) data. The method comprises the following steps of S1, converting three input color values of R, G and B into an HSV (Hue, Saturation, Value) color space; S2, under the condition of remaining a hue H value and a saturation S of the HSV color space value unchanged, adjusting a value of brightness V; and S3, converting the H value, the S value and the V value processed through the step S2 into the RGBW (Red, Green, Blue, White) color space from the HSV color space, and displaying. The RGB color space is converted into the HSV color space, the brightness V is improved under the condition of remaining the H and the S in the HSV color space unchanged, and the HSV color space is converted into the RGBW color space, so that the brightness can be improved while better hue and color saturation are maintained and color transition is natural.

The invention discloses a flexible display panel and a making method thereof and a display device. The flexible display panel comprises multiple display units arranged on a flexible substrate, packaging films arranged on the corresponding display units and a colored film layer which are arranged on the packaging films and used for resisting reflection, wherein the colored film layer comprises multiple colored filter layers which are arranged corresponding to the display units and light shading layers, and each light shading layer is arranged in a gap between every two adjacent colored filter layers. The colored film layer is adopted for replacing an externally pasted polaroid, the light transmissivity of the colored filter layers in the colored film layer is higher than the polaroid, the light shading layers in the colored film layer can shade reflection of reflective elements arranged at the gaps among the display units to environmental light, in this way, the anti-reflective function can be achieved, and it is guaranteed that the flexible display panel has good display brightness. In addition, the thickness of the colored film layer is thinner than an existing polaroid, and bending of the flexible display panel is promoted.

A liquid crystal display including includes a surface light source device of side light type for backlighting a liquid crystal panel. A primary light source supplies light to a guide plate. Emission from an emitting face impinges on a polarization separating element through a prism sheet. A polarization component which is directionally corresponding to a transmission polarization plane M12 is supplied to the liquid crystal panel. Reflection at the polarization separating element provides returning light which is subject to inside reflection by projection rows formed on a back face of the guide plate, thereby causing the guide plate to emit afresh recycling light. This recycling light, which is rich with the polarization component directionally in accordance with transmission polarization plane M12, impinges again on the polarization separating element. The projection rows formed on the back face run in a direction (first direction) which is generally vertical with respect to an incidence face of the guide plate while obliquely crossing with respect to both reflection polarization plane M2 and transmission polarization plane M12 of the polarization separating element. Projection rows formed on an inner face of the prism sheet run in another direction (second direction) which is generally parallel with respect to the incidence face of the guide plate. The polarization separating element and the prism sheet may be unified.