Visteon Global Technologies, Inc.

A heads-up display includes an image display and a reflector. The image display has an active area and a periphery around the active area. The image display is operational to project a visible image from the active area. The reflector is optically aligned with the image display, oriented to reflect the visible image received from the image display toward an eye box, and reflect an infrared image received from the eye box toward the image display. The reflector includes a visible reflective layer that reflects the visible image, an intermediate layer adjacent to the visible reflective layer and operational to block the visible image and transmit the infrared image, and an infrared reflective layer adjacent to the intermediate layer, on an opposite side of the intermediate layer as the visible reflective layer, and operational to reflect the infrared image.

A display system having a backlight source, a transmissive display, and an electronic control unit. The backlight source defines a full area matrix of a plurality of backlight zones, and is operational to generate a background light in response to a background signal. The transmissive display has a plurality of pixels, is mounted adjacent to the backlight source, and is operational to generate a plurality of visible images by modulating the background light in response to a video signal. The electronic control unit is coupled to the backlight source and the transmissive display, and is operational to adjust an on-pixel-ratio function that controls the background signal in response to an ambient light level present at the transmissive display. The on-pixel-ratio function dynamically darkens the background light on an individual background zone basis to reduce a leakage halo effect.

A system for backlighting a display to avoid producing a reflection. The system may include a light source configured for generating a light, a collimated lightguide configured for collimating the light to a collimated light, and a direction changing element configured for directing the collimated light to a vertically narrow light operable to avoid producing reflections.

A display panel includes a polarizer, a liquid crystal retarder, a passive dichroic dye film, and a display. The polarizer transfers a light with a polarization in an orientation. The liquid crystal retarder transfers the light in response to a control signal. A private mode maintains the polarization and the orientation of the light. A public mode rotates the polarization and the orientation of the light. The light with a first polarization in the private mode is absorbed by the passive dichroic dye film for off-axis incident angles in the first direction and transmitted for normal incidence angle and off-axis incidence angles in the second direction. The light with a second polarization in the public mode is transmitted for normal incidence angle and off-axis incidence angles in the first direction and absorbed for off-axis incidence in the second direction. The display is operational to generate an image in the light.

A display panel includes a first polarizer, two twisted nematic cells, a second polarizer, and a display. The first twisted nematic cell transfers light in response to a first control signal. In an off state, a polarity of the light is rotated in a first twist. In an on state, the polarity of the light is maintained. The second twisted nematic cell transfers the light in response to a second control signal. In the off state, a polarity of the light is rotated in a second twist. In the on state, the polarity of the light is maintained. The display generates an image in the light in response to a display signal. While the twisted nematic cells are in the off state, the image is viewable in a public viewing angle. While the twisted nematic cells are in the on state, the image is viewable in a private viewing angle.

A controller configured for minimizing power dissipation of a full area local dimming (FALD) display. The controller configured for determining an input grayscale value for each of a plurality of pixels comprising the image, remapping the input grayscale values to output grayscale values, displaying the image according to the output grayscale values, and controlling a normalized backlight luminance for each zone according to a maximum grayscale value determined therefor.

A display system includes a backlight configured to project light. A first display unit is disposed proximate the backlight. A second display unit is disposed proximate the first display unit. A microcontroller is in communication with one or more of the backlight, the first display unit and the second display unit. The microcontroller executes instructions to adjust the first display unit between a first transmissive state and a second transmissive state.

A controller configured for minimizing power dissipation of a full area local dimming (FALD) display. The controller configured for determining an input grayscale value for each of a plurality of pixels comprising the image, remapping the input grayscale values to output grayscale values, displaying the image according to the output grayscale values, and controlling a normalized backlight luminance for each zone according to a maximum grayscale value determined therefor.

A system for backlighting a display to avoid producing a reflection. The system may include a light source configured for generating a light, a collimated lightguide configured for collimating the light to a collimated light, and a direction changing element configured for directing the collimated light to a vertically narrow light operable to avoid producing reflections.

A display system includes a backlight. A first display unit is disposed proximate the backlight. The first display unit may include a plurality of pixels. Around each pixel, the display system may include a matrix structure. A reflective polarizer may cooperate with a substrate of the first display unit. A second display unit is disposed proximate the first display unit. A microcontroller may be coupled to one or more of the backlight, the first display unit and the second display unit.