AlGaInP-LED (Light Emitting Diode) integrated micro-display device with single-face electrode structure

A micro-display device and electrode structure technology, applied in the direction of electric solid-state devices, electrical components, semiconductor devices, etc., can solve problems such as difficult fabrication and high substrate thickness requirements, and achieve simple structure, avoid physical damage, and fast response Effect

Active Publication Date: 2012-11-21
CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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Problems solved by technology

[0004] The present invention aims to solve the technical problem that the microdisplay device in the prior art requires high substrate thickness and is not easy to manufacture, and provides an AlGaInP-LED integrated microdisplay based on an AlGaInP light-emitting layer and a single-sided electrode structure. display device

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  • AlGaInP-LED (Light Emitting Diode) integrated micro-display device with single-face electrode structure
  • AlGaInP-LED (Light Emitting Diode) integrated micro-display device with single-face electrode structure
  • AlGaInP-LED (Light Emitting Diode) integrated micro-display device with single-face electrode structure

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Embodiment Construction

[0028] The inventive concept of the present invention is that for LED array microdisplay devices, the electrode shape is an important factor determining its luminous efficiency and luminous uniformity, and the design of the electrode shape should comprehensively consider the area of ​​the light-transmitting window and the distribution uniformity of the current under the electrode .

[0029] The AlGaInP-LED integrated micro-display device with a single-sided electrode structure proposed by the present invention can avoid the process difficulties caused by separately making electrodes on the front and back, and will not cause damage to the device, so it will not have any impact on the light emission of the device. The AlGaInP-LED integrated micro-display device with a single-sided electrode structure of the present invention has double-striped upper and lower electrodes perpendicular to different surfaces, which can theoretically obtain higher luminous efficiency, and through the...

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Abstract

The invention discloses an AlGaInP-LED (Light Emitting Diode) integrated micro-display device with a single-face electrode structure, comprising an N-type substrate layer and multiple light emitting units, wherein the N-type substrate layer is used for supporting the micro-display device; the multiple light emitting units are arranged above the N-type substrate layer and are separated by multiple mutually-intersected channels; opaque diaphragms are filled in the channels; and a lower electrode is arranged on the lower stage top of each light emitting unit, and an upper electrode is arranged on top of each light emitting unit. According to the AlGaInP-LED integrated micro-display device with the single-face electrode structure, the difficulty in the process of manufacturing electrodes on the front side and the back side is avoided, the double strip-shaped upper electrode and lower electrode perpendicular in a non-coplanar manner are adopted, and more uniform current distribution can be obtained.

Description

technical field [0001] The invention belongs to the technical field of light-emitting display, and relates to a micro-display device, in particular to an AlGaInP-LED integrated micro-display device based on an AlGaInP light-emitting layer and having a single-sided electrode structure. Background technique [0002] The LED array-based micro-display system is a micro-display device prepared by using inorganic light-emitting diode chips, which has the advantages of simple structure, firmness, and fast response. [0003] A conventional device for a microdisplay device is a bulk structure of double-sided electrodes. The cross-sectional view of the electrode structure of the bulk structure is shown by figure 1 As shown, that is, the upper electrode 102 and the lower electrode 104 are respectively located at the upper and lower ends of the light emitting unit 103 . The light emitting unit 103 includes a substrate and an isolation grating 101 . In the above-mentioned microdisplay...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L27/15H01L33/38
Inventor 田超梁静秋梁中翥王维彪
Owner CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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