Abstract:
Systems, methods, and devices are provided for an electronic display (18) with thermally compensated pixels (20). Such an electronic display (18) may have an array of pixels (140), at least some of which may be thermally compensated pixels (20) that exhibit reduced color shift over a 20°C change in temperature. These thermally compensated pixels (20) may have numbers of pixel electrode fingers, pixel electrode widths and spacings, cell gap depths, and/or pixel edge distances that cause the array of pixels (140) to exhibit a reduced color shift than otherwise (e.g., a color shift of less than delta u v of about 0.0092 from a starting white point) when the temperature of the electronic display (18) changes from about 30°C to about 50°C.
Abstract:
A tiling display system has multiple display panels. The display panels may be positioned by positioners that are coupled to the display panels. In an untiled operating mode, the display panels of the tiling display system are moved apart. In this mode, each display panel can display different content such as different static images of artwork. In a tiled operating mode, the display panels of the tiling system are moved together to form a single display that displays a single still or moving image. Components on the backs of the display panels and/or along the edges of the display panels may be used to facilitate panel-to- panel alignment, to help couple adjacent panels together, and to support the transfer of power and/or data signals among the panels. The components may include optical and/or electrical alignment sensors, magnets for alignment and coupling, and transmitters and receivers for transmitting and receiving signals.
Abstract:
Systems and methods for reducing or eliminating image artifacts on a dual-layer liquid crystal display (LCD) 18. By way of example, a system 10 includes a first display panel 46 and a second display panel 48. The system 10 includes a processor 12 coupled to the first display panel 46 and the second display panel 48, and configured to generate a first image, and to generate a second image to be displayed on the first display panel 46 based on the first image. The processor 12 is configured to interpolate the second image. Interpolating the second image includes adjusting the second image according to a generated objective function bounded by a first constraint. The processor 12 is configured to filter the second image, and to generate a third image to be displayed on the second display panel 48 based on the first image and the second image. The third image is generated to prevent image artifacts on the second display panel 48.
Abstract:
A display is provided that has upper and lower polarizers, a color filter layer, a liquid crystal layer, and a thin-film transistor layer. The color filter layer and thin-film transistor layer may be formed from materials such as glass that are subject to stress-induced birefringence. To reduce light leakage that reduces display performance, one or more birefringence compensation layers may be incorporated into the display to help compensate for any birefringence effects. The compensation layers may include a birefringence compensation layer attached to the color filter layer or the thin-film transistor layer. A display may include an upper compensation layer attached to the color filter layer and a lower compensation layer attached to the thin- film transistor layer. The compensation layer may be formed from glass or polymer materials that have a negative photo-elastic constant.
Abstract:
Methods and devices for shielding displays (18) from electrostatic discharge (ESD) are provided. In one example, a display (18) of an electronic device (10) may include a high resistivity shielding layer (78) configured to protect electrical components from static charges. The display (18) may also include a conductive layer electrically coupled to the high resistivity shielding layer (78) and configured to decrease a discharge time of static charges from the high resistivity shielding layer (78). The display (18) may include a grounding layer (72) and a conductor electrically coupled between the conductive layer and the grounding layer (72) to direct static charges from the conductive layer to the grounding layer (72).
Abstract:
Systems, methods, and devices for reducing the loss of transmittance caused by column inversion. To provide one example, an electronic display 18 may include a display panel 180 with columns of pixels 60 and driver circuitry 112 to drive the pixels 60 using column inversion. Adjacent columns 128 that are driven at like polarity are spaced more closely than adjacent columns 128 driven at opposite polarities.
Abstract:
An electronic device may have a liquid crystal display having a backlight and color mixing prevention structures. The color mixing prevention structures may, in part, be formed from one or more arrays of color filter elements. The liquid crystal display may include first and second transparent substrate layers on opposing sides of a liquid crystal layer. The display may include a first array of color filter elements on the first transparent substrate layer and a second array of color filter elements on the second transparent substrate layer. One or more of the arrays of color filter elements may include a black matrix formed over portions of the color filter elements. The color filter elements may fill or partially fill openings in the black matrix. The display may include a collimating layer on the second transparent substrate layer. The color filter elements may include cholesteric color filter elements.
Abstract:
Methods and devices employing in-cell and/or on-cell touch sensor components, including in-cell and/or on-cell black matrix material (80) that also may serve as a touch drive or sense electrode, are provided. In one example, an electronic display (18) may include a lower substrate (64), an upper substrate (70), and a black matrix material (80) that shields light between pixels of the electronic display (18). At least a portion of the black matrix material (80) may form all or part of a component of a touch sensor of the electronic display (18).
Abstract:
Electronic devices may be provided with displays having polarizer structures (48). Polarizer structures (48) may incorporate flexible layers of glass (50). The flexible glass layers (50) may be laminated to other sheets of material (52-62) in the polarizer structures (48) using roll-to-roll lamination equipment. After the polarizer structures (48) are cut into panels, the panels may be laminated to liquid crystal display structures, organic light-emitting-diode display structures or other display structures using sheet-to-sheet lamination tools. Ultraviolet-light-blocking material (52) may be incorporated into a display to prevent damage to the polarizer layers (54) in the polarizer structures (48). Coatings (68) such as antireflection coatings, antistatic coating, and anti-smudge coatings may be provided on the polarizer structures (48). Displays may use the flexible glass layers (50) and additional protective layers to prevent a polarizer layer (54) from being exposed to excessive moisture. A birefringent layer (62) may be incorporated into a display and may serve as a protective layer for a polarizer (54).
Abstract:
Electrical shield line systems are provided for openings (829) between common electrodes (813, 815) near data lines (807) of display and touch screens (800). Some displays, including touch screens, can include multiple common electrodes (Vcom, 813, 815) that can have openings (829) between individual Vcoms (813, 815). Some display screens can have an open slit (829) between two adjacent edges of Vcom (813, 815). Openings (829) in Vcom (813, 815) can allow an electric field (831) to extend from a data line (807) through the Vcom layer (813, 815). A shield (833) can be disposed over the Vcom opening (829) to help reduce or eliminate an electric field from affecting a pixel material, such as liquid crystal (827). The shield (833) can be connected to a potential such that electric field is generated substantially between the shield (833) and the data line (807) to reduce or eliminate electric fields reaching the liquid crystal (827).