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Light-sensitive pixel structure with front-side coating

A pixel structure and photosensitive technology, applied in radiation control devices, internal electrodes, semiconductor devices, etc., to achieve the effect of improving resolution and reducing size

Active Publication Date: 2021-12-21
PIXIUM VISION SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, an increase in the thickness of the substrate is not always desirable or possible in view of the target application

Method used

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  • Light-sensitive pixel structure with front-side coating
  • Light-sensitive pixel structure with front-side coating
  • Light-sensitive pixel structure with front-side coating

Examples

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Embodiment Construction

[0058] figure 1 An exemplary photosensitive pixel structure 10 is shown. The photosensitive pixel structure 10 (hereinafter also referred to as pixel) according to the illustrated embodiment comprises two photodiodes 12, 12', a central electrode 14 and a resistor 16. A counter electrode 18 is disposed on the periphery of the pixel structure 10 , and the counter electrode is also often referred to as a return electrode. The counter electrode 18 can be arranged on each individual pixel structure 10, for example, at the periphery of each pixel structure 10 as shown in FIG. 1 . This means that the return electrode is local and located between different central electrodes of the array 1 of pixel structures. This is also commonly referred to as a "bipolar" configuration.

[0059] For this bipolar arrangement, two configurations are possible. The return electrodes may be disconnected from each other. This means that the pixels in this case are completely independent of each othe...

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Abstract

The invention relates to a photosensitive pixel structure (10) comprising a substrate layer (15) and an interface layer (50), wherein the interface layer (50) is at least partially arranged on a first surface of the substrate layer (15), and Wherein, the interface layer (50) at least partially includes a first material layer (51), and the interface layer (50) at least partially includes a second material layer (52) covering the first material layer (51), so that the first material The layer (51) is at least partially sandwiched between the second material layer (52) and the substrate (15). The invention also relates to arrays and implants comprising such pixel structures and methods of providing pixel structures, wherein the second material layer also has a thickness selected from 200nm-600nm, preferably from 300nm-500nm, most preferably from 320nm-450nm .

Description

technical field [0001] The present invention relates to a photosensitive pixel structure and arrays and implants having such a pixel structure. Furthermore, the invention relates to a method of providing a light sensitive pixel structure. Background technique [0002] Implant systems are known which assist in restoring at least some vision to patients who have become blind, eg, due to degenerative diseases such as retinitis pigmentosa. Implants can be used to restore vision, at least to some extent, taking advantage of the fact that although part of the retina has degenerated, a large portion of the retina remains intact and can still be directly stimulated by light-related electrical stimulation. Such electrical stimulation can be provided by an implanted system. Such systems typically include special goggles placed in front of the patient's eyes and implants, particularly subretinal implants, that include multiple electrodes in contact with living tissue or cells. [00...

Claims

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Application Information

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IPC IPC(8): A61N1/05H01L27/146
CPCA61N1/0543H01L27/1463H01L27/14649H01L27/1461H01L27/1462
Inventor 马丁·德特尔
Owner PIXIUM VISION SA