Abstract:
An electronic device may have a housing with a lid (12A) that rotates relative to a base (12B). A display in the lid may have a thin-film transistor layer. Display driver circuitry may be mounted to the thin-film transistor layer. A display timing controller integrated circuit (34) may be mounted in the base. A rigid flex printed circuit may have a rigid portion in the base (90-4) to which the display timing controller integrated circuit is mounted and may have a rigid portion in the lid (90-2). A flexible printed circuit portion (90-1) of the rigid flex printed circuit may be used to couple the rigid printed circuit portion in the lid to the thin-film transistor layer. A flexible printed circuit portion (90-3) of the rigid flex printed circuit that extends between the lid and the base may be formed from a double-shield-layer single-signal-line-layer flexible printed circuit.
Abstract:
An electronic device is provided with a display such as a liquid crystal display. The display includes a liquid crystal display module an array of display pixels. A backlight unit is used to provide backlight illumination to the display module. A shutter module having local dimming elements is used to locally control the amount of light that is transmitted through the display. The local dimming elements can be formed from liquid crystal display structures, polymer-dispersed liquid crystal display structures, photovoltaic material, electrowetting display structures, and/or other suitable light controlling elements. Each local dimming element controls the amount of light that is transmitted through an overlapping region of the array of display pixels. The local dimming elements may be arranged in a uniform array having rows and columns or may be shaped and sized differently and located in specific regions of the display.
Abstract:
A display (14) may include a color filter layer (56), a liquid crystal layer (52), and a thin-film transistor layer (58). A camera window opening (84) may be formed in the display (14) to accommodate a camera (86). The camera window opening (84) may be formed by creating a notch (84) in the thin-film transistor layer (58) that extends inwardly from the edge of the thin-film transistor layer (58). The notch (84) may be formed by scribing the thin-film transistor layer (58) around the notch location and breaking away a portion (58") of the thin-film transistor layer (58). A camera window opening (84) may also be formed by grinding a hole (84) in the display (14). The hole (84) may penetrate partway into the thin-film transistor layer (58), may penetrate through the thin-film transistor layer (58) but not into the color filter layer (56), or may pass through the thin-film transistor layer (58) and partly into the color filter layer (56).
Abstract:
An electronic device may have a liquid crystal display with backlight structures. The backlight structures may produce backlight that passes through an array of display pixels. The display pixels may include electrode structures and thin-film transistor structures for controlling electric fields in a layer of liquid crystal material. The liquid crystal material may be formed between an outer display layer and an inner display layer. The inner display layer may be interposed between the backlight structures and the liquid crystal material. Thin-film transistor structures, electrodes, and conductive interconnection lines may be deposited in a layer on the inner surface of the outer display layer. A layer of color filter elements may be used to provide the display with color pixels. The color filter elements may be formed on top of the thin-film transistor layer or on a separate color filter array substrate such as the inner display layer.
Abstract:
An electronic display (102) configured to provide a visual output, such as a liquid crystal display. The electronic display includes an optical shutter and a first polarizer (214) operably connected to the optical shutter. The first polarizer includes an optical filter layer (136; 336), a protective layer (134, 138; 334, 338), and a moisture barrier (210; 310) positioned on a first surface of either the optical filter or the protective layer. The moisture barrier substantially prevents water molecules from being transmitted therethrough.
Abstract:
Systems, methods, and devices are provided for maintaining a target white point on a light emitting diode based backlight In one embodiment, the backlight may include two or more strings of light emitting diodes, each driven at a respective driving strength. Each string may include light emitting diodes from a different color bin, and the respective driving strengths may be adjusted, for example, through pulse width modulation or amplitude modulation, to maintain the target white point. In certain embodiments, the driving strengths may be adjusted to compensate for shifts in the white point that may occur due to temperature or aging. A controller 70 may adjust the driving strengths based on feedback from a temperature sensor, from an optical sensor 76, from a user input, or from calibration data included within the backlight or system.
Abstract:
This disclosure relates to speakers and more specifically to an array speaker for distributing music uniformly across a room. A number of audio drivers can be radially distributed within a speaker housing so that an output of the drivers is distributed evenly throughout the room. In some embodiments, the exit geometry of the audio drivers can be configured to bounce off a surface supporting the array speaker to improve the distribution of music throughout the room. The array speaker can include a number of vibration isolation elements distributed within a housing of the array speaker. The vibration isolation elements can be configured reduce the strength of forces generated by a subwoofer of the array speaker.
Abstract:
A display may have a pixel array such as a liquid crystal pixel array. The pixel array may be illuminated with backlight illumination from a direct-lit backlight unit. The backlight unit may include an array of light-emitting diodes on a printed circuit board. The backlight unit may include first, second, and third light spreading layers formed over the array of light-emitting diodes. A color conversion layer may be formed over the first, second, and third light spreading layers. First and second brightness enhancement films may be formed over the color conversion layer.