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Multi-stack information carrier with electrochromic materials

An electrochromic material, information carrier technology, applied in information storage, optical record carrier, recorded information storage and other directions, can solve the deterioration of writing and reading, reduce beam intensity, optical data storage technology is not suitable for multi-layer information carriers and other problems to achieve the effect of increasing the number of layers

Inactive Publication Date: 2006-03-29
KONINK PHILIPS ELECTRONICS NV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In fact, when the beam has to travel through multiple layers to address one layer, interactions occur in the non-addressed layers, reducing the intensity of the beam
In addition, changes in the local refractive index of the written information pattern in the non-addressed layer can cause refraction and scattering of the passing beam, resulting in poor writing and reading
[0007] Therefore, traditional optical data storage technology is not suitable for multilayer information carriers, especially information carriers containing more than three layers

Method used

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  • Multi-stack information carrier with electrochromic materials
  • Multi-stack information carrier with electrochromic materials
  • Multi-stack information carrier with electrochromic materials

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Embodiment Construction

[0031] A first ROM information carrier according to the invention is shown in Figure 1a middle. Such an information carrier comprises a first information layer 11 , a first electrolyte layer 12 , a first counter electrode 13 , a spacer layer 14 , a second information layer 15 , a second electrolyte layer 16 and a second counter electrode 17 . The first information layer 11, the first electrolyte layer 12 and the first counter electrode 13 form a first information stack and the second information layer 15, the second electrolyte layer 16 and a second counter electrode 17 form a second information stack. The two information stacks are separated by a spacer layer 14 . An information carrier according to the invention may comprise more than two information stacks. For example, an information carrier according to the invention may comprise 10, 20 or as many as 100 or more information stacks. For example, an information carrier according to the invention (comprising 6 information...

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Abstract

The invention relates to an information carrier for scanning information by means of an optical beam having a wavelength. The information carrier comprises at least two information stacks. Each stack comprises a counter electrode ( 13, 17 ), an electrolyte layer ( 12, 16 ) and an information layer ( 11, 15 ). The information layer comprises an electrochromic material whose optical properties at the wavelength of the optical beam depend on a potential difference applied between the information layer and the counter electrode.

Description

technical field [0001] The invention relates to a multi-layer optical information carrier. [0002] The invention also relates to a scanning device for scanning said multi-layered optical information carrier. [0003] The invention also relates to a method of reading from said multi-layer optical information carrier, a method of recording on said multi-layer optical information carrier and a method of erasing said multi-layer optical information carrier carrier method. [0004] In particular, the invention relates to optical data storage and optical disc devices for reading from and / or recording to multi-stack optical discs. Background technique [0005] In the field of optical recording, there is a tendency to increase the capacity of information carriers. A well-investigated way of increasing data capacity is the use of multiple information layers in the information carrier. For example, a DVD (Digital Video Disc) may comprise two information layers. The information i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G11B7/24G11B7/00G11B7/24038
CPCG11B2007/0009G11B7/24038G11B7/241
Inventor J·维德比克M·巴里斯特雷里M·维斯恩德马克E·梅恩德斯C·布斯奇
Owner KONINK PHILIPS ELECTRONICS NV