Patent ID: 11953778
Assignee: VISTEON GLOBAL TECHNOLOGIES, INC.
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 13:
14. A display system comprising:
a backlight having a plurality of light emitting elements configured emitting polarized light;
a first display unit disposed proximate the backlight, wherein the first display unit includes:
an upper substrate,
a monochrome liquid crystal layer cooperating with the upper substrate, wherein the monochrome liquid crystal layer of the first display unit is pixelated, wherein each pixel thereof is dynamically configured to optically rotate polarized light to produce a local dimming backlight at the pixel level, and wherein a periphery of each pixel includes a matrix structure disposed thereon,
a lower substrate disposed opposite the upper substrate and cooperating with the monochrome liquid crystal layer,

a second display unit disposed proximate the first display unit, the second display unit including a color thin film transistor (TFT) display layer;
a diffuser disposed between the first display unit and the second display unit, wherein the diffuser provides a light profile transition for light transmitted through the first display unit;
a microcontroller coupled to the first display unit,
wherein the microcontroller is configured to execute instructions to adjust the monochrome liquid crystal layer of the first display unit between at least a first transmissive state and a second transmissive state, the first transmissive state corresponding with polarized light transmitted from the backlight projecting through the monochrome liquid crystal layer of the first display unit to the second display unit, the second transmissive state corresponding with the monochrome liquid crystal layer rotating the polarized light transmitted from the backlight up to 90 degrees;
a reflective polarizer positioned between the second display unit and the backlight;
wherein a back side of the matrix structure includes a reflective matrix element configured to reflect the light back to the backlight for recycling and a front side of the matrix structure includes a black matrix structure to reduce reflectivity from a front side of the monochrome liquid crystal layer;
wherein the light emitting elements are in a direct type of alignment with the color TFT layer for providing direct lighting thereto;
wherein the light emitting elements are arranged into a plurality of zones, each zone configured to be independently controllable between the first and second transmissive states; and
wherein the color TFT display layer includes a plurality of color pixels in vertical alignment with the zones and the lighting emitting elements.