公开(公告)号：US20220319400A1

公开(公告)日：2022-10-06

申请号：US17610631

申请日：2020-04-27

Applicant: OSRAM Opto Semiconductors GmbH

Inventor： Brendan HOLLAND ,  Gunnar PETERSEN ,  Daniel RICHTER

IPC: G09G3/32

Abstract: A display apparatus includes a multiplicity of picture elements for emitting visible light in different colors in an adjustable manner by means of a plurality of semiconductor layer sequences. Each of the picture elements has a plurality of types of pixels and each type of pixels is configured for emitting light of a specific color. The pixels are each subdivided into a plurality of sub-pixel. All the sub-pixels are configured for emitting light of the same color out of the display apparatus without further color change. At least two sub-pixels within each pixel have emission areas of different sizes. An electrical control unit is assigned to each pixel. The control units are each configured to automatically control the sub-pixels of a relevant pixel depending on an energization intensity in such a way that a light-emitting area of the relevant pixel increases in stepped fashion with the energization intensity.

公开(公告)号：US20210358348A1

公开(公告)日：2021-11-18

申请号：US17286361

申请日：2019-10-15

Applicant: OSRAM Opto Semiconductors GmbH

Inventor： Gunnar PETERSEN ,  Daniel RICHTER ,  Michael FOERSTER ,  Nicole BERNER ,  Konrad WAGNER

IPC: G09F9/37 ,  G09F9/33 ,  H01L33/50 ,  H01L25/075

Abstract: A light emitting cell for use as a pixel, the light emitting cell being configured to generate the three primary colors and to form different color tones therewith, comprising: a light emitting front surface, a rear surface, and a substrate arranged between the front and rear surface; a light source carried by the substrate; three luminous sections, comprising a blue luminous section, a light converting red luminous section, and a light converting green luminous section; and a primary color selection device capable of performing a repetitive movement at a certain frequency so that, during this movement, one of the luminous sections is alternately selected as a potential light emitting section, characterized in that the primary color selection device is a single mechanical component that serves to select all three luminous sections.