Light modulation device having high light efficiency
AssigneeSeeReal Technologies S.A.
InventorsNorbert Leister, Bo Kroll
Life of this patent
Estimating the term…
Abstract
The invention relates to a light modulation device having pixels. Essentially, the one half of the pixels are reflective and the other half of the pixels are transmissive. The reflective pixels are arranged in alternation with the transmissive pixels in the same substrate plane. The light modulation device also has a backplane, which has transistors and data lines for conducting signals to the pixels. Each pixel is assigned at least one transistor and at least two data lines. The transistors and the data lines of each adjacent pair of a reflective pixel and a transmissive pixel are arranged under the reflective pixel.
Claims31
A light modulation device, comprising
- pixels, substantially one half of the pixels being designed as reflective and the other half of the pixels as transmissive and the reflective pixels being arranged in alternation with the transmissive pixels in a same substrate plane,
- a backplane comprising transistors and data lines for conducting signals to the pixels, each pixel being assigned at least one transistor and at least two data lines, the transistors and the data lines of each mutually adjacent pair composed of a reflective pixel and a transmissive pixel being arranged under the reflective pixel,
- two polarizers are provided, one polarizer being arranged in a region of a light entrance plane of the light modulation device and the other polarizer being arranged in a region of a light exit plane of the light modulation device,
- the polarizer provided in the region of the light entrance plane of the light modulation device is configured as transmissive for one defined polarization and as reflective for another defined polarization, and
- a distance between the polarizer provided in the region of the light entrance plane of the light modulation device and mirror elements of a mirror system in a reflection plane is set to a same value as a thickness of at least one substrate between the mirror elements of the mirror system and an addressable transmissive layer with the pixels.
Dependencies are inferred from the claim text.