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Molecular electronic device fabrication methods and structures

A device structure and technology of electronic devices, applied in the direction of electric solid devices, electrical components, semiconductor devices, etc., to achieve the effect of eliminating short circuits

Active Publication Date: 2009-09-09
CAMBRIDGE DISPLAY TECH LTD
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  • Abstract
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  • Claims
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  • Molecular electronic device fabrication methods and structures
  • Molecular electronic device fabrication methods and structures
  • Molecular electronic device fabrication methods and structures

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Embodiment Construction

[0060] now refer to Figure 5 , which shows a well bounded on either side by banks that has been filled with a total ink volume V 1 until it overflows above the top of the well (can be measured by microscope). The banks in this figure have a height of about 1.5 μm, are flat on top and are shared by adjacent wells, and have a spacing of x b2 Separates two adjacent ink volumes in adjacent wells. The solution forms a contact angle with the bank material of approximately 35°; this is the angle formed by the surface of the dissolved material and the bank material it contacts. The tapered edge of the bank forms a similar bank angle, eg about 40°, with the plane of the substrate. The dotted lines in this figure represent the contours of the solutions in adjacent wells; it can be seen that careful control of the solution volume is required to avoid the spacing x b2 Reduced to the point where adjacent solutions merge.

[0061] Figure 6 shows that once the solvent has evaporated ...

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Abstract

This invention generally relates to improved methods of fabricating molecular electronic devices, in particular organic electronic devices such as organic light emitting diodes (OLEDs) by droplet deposition techniques such as ink jet printing. The invention also relates to molecular device substrates fabricated by and / or use in such methods. We describe an optical or optoelectronic device comprising a substrate and a plurality of discrete bank structures disposed on the substrate, wherein: each bank structure defines the perimeter of at least one well; one or more of a charge transporting, charge injecting, light-filtering and light-emitting material is disposed in the well; and at least one bank structure defines the perimeter of at least one well and does not extend to the perimeter of any adjacent well. Thus in embodiments no part of said perimeter defines the bank of more than one well.

Description

technical field [0001] The present invention generally relates to improved methods of fabricating molecular electronic devices, in particular organic electronic devices such as organic light emitting diodes (OLEDs), by droplet deposition techniques such as inkjet printing. The invention also relates to molecular device substrates fabricated by and / or used in such methods. Background technique [0002] Organic light emitting diodes (OLEDs) are a particularly advantageous form of electro-optical display. They are bright, rich in color, fast in switching, offer wide viewing angles, and are easily and inexpensively fabricated on a variety of substrates. Depending on the materials used, organic (here including organometallic) LEDs can be fabricated using polymers or small molecules in various colors (or in multicolor displays). A typical OLED device contains two layers of organic materials, one of which is a light-emitting material layer such as light-emitting polymers (LEP), o...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L27/32H10K99/00
CPCH01L27/3283H01L27/3246H01L51/0005H10K59/122H10K59/173H10K71/135H10K59/00
Inventor H·格利高利
Owner CAMBRIDGE DISPLAY TECH LTD
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