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Transparent active matrix display comprising emitting pixels with colored light-emitting diodes

A light-emitting diode and pixel matrix technology, applied in static indicators, instruments, electric solid-state devices, etc., can solve problems such as difficult components to handle

Pending Publication Date: 2019-01-25
THALES SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, these components are difficult to handle and difficult to precisely position over large areas

Method used

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  • Transparent active matrix display comprising emitting pixels with colored light-emitting diodes
  • Transparent active matrix display comprising emitting pixels with colored light-emitting diodes
  • Transparent active matrix display comprising emitting pixels with colored light-emitting diodes

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0037] figure 2 A triad of light-emitting diodes according to the invention is shown. It takes the form of an electronic assembly 10 . The assembly comprises three light emitting diodes 11 , 12 and 13 which emit light in red, green and blue respectively. These light emitting diodes may eg emit different colors inherently, or eg by conversion via phosphors or "quantum dots". In particular, the blue color can be obtained by direct emission, or converted from UV radiation by suitable phosphors or quantum dots.

[0038] Three diodes are fabricated on the same substrate. As examples, the substrate may be made of sapphire, silicon carbide or silicon.

[0039] exist figure 2 In , as a non-limiting example, the LEDs are aligned. The assembly also includes four electrical contacts 14 , 15 , 16 and 17 . Each LED has a dedicated control electrical contact and the three diodes have a common electrical contact 17 for the power supply. Therefore, for three separate diodes, the ass...

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PUM

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Abstract

The invention relates to a transparent active matrix display comprising emitting pixels with colored light-emitting diodes. It comprises a transparent plate and a pixel matrix composed of light emitting diodes arranged on the plate. In the display, each pixel is an electronic component including a triplet of three light-emitting diodes emitting in three different spectra and four electrical contacts, each light-emitting diode having a dedicated electrical control contact, the three diodes having an electrical contact that is common to the three light-emitting diodes, the area occupied by the matrix array of pixels being an order of magnitude smaller than that of the transparent substrate. In a first variant, the pixel includes six diodes and in a second variant, the pixel includes twelve diodes. The placement of the pixels is thus facilitated. The control electronics are adapted so as to decrease the number of control lines and columns. The transparency of the display is thus increased.

Description

technical field [0001] The field of the invention is that of transparent viewing devices which enable images or information to be displayed as superimposed on the outside. It can be used in particular in the automotive or aviation sector. Background technique [0002] A transparent display includes a matrix of color-emitting light-emitting pixels addressed by a set of conductive rows and columns. Each intersection of rows and columns consists of a pixel and its addressing electronics, such as figure 1 shown. [0003] In order for the screen to maintain good transparency, it is sufficient that the components of the rows, columns, pixels and associated electronics occupy only a small portion of the screen. [0004] The light-emitting pixels can be light-emitting diodes (or "LEDs"), which offer a number of advantages. Especially worth mentioning is its large luminous power, small footprint and high reliability. [0005] In this case, the control or addressing electronics c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L25/075H01L25/16H01L33/48H01L33/62G09G3/32
CPCG09G3/32H01L25/0753H01L25/167H01L33/486H01L33/62H01L2933/0066H01L2933/0033G09G2300/0426G09G2300/0465H10K19/20H01L27/1214
Inventor H·勒布伦
Owner THALES SA