EP1309994A2 - Encapsulated organic-electronic component, method for producing the same and use thereof - Google Patents

Encapsulated organic-electronic component, method for producing the same and use thereof

Info

Publication number
EP1309994A2
EP1309994A2 EP01962659A EP01962659A EP1309994A2 EP 1309994 A2 EP1309994 A2 EP 1309994A2 EP 01962659 A EP01962659 A EP 01962659A EP 01962659 A EP01962659 A EP 01962659A EP 1309994 A2 EP1309994 A2 EP 1309994A2
Authority
EP
European Patent Office
Prior art keywords
layer
electronic circuit
characterized
components
circuit according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP01962659A
Other languages
German (de)
French (fr)
Inventor
Adolf Bernds
Wolfgang Clemens
Walter Fix
Henning Rost
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
PolyIC GmbH and Co KG
Original Assignee
Siemens AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to DE10040442 priority Critical
Priority to DE10040442 priority
Priority to DE10120685 priority
Priority to DE10120687A priority patent/DE10120687A1/en
Priority to DE10120685A priority patent/DE10120685C1/en
Priority to DE10120687 priority
Application filed by Siemens AG filed Critical Siemens AG
Priority to PCT/DE2001/003164 priority patent/WO2002015264A2/en
Publication of EP1309994A2 publication Critical patent/EP1309994A2/en
Application status is Withdrawn legal-status Critical

Links

Classifications

    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H01L51/00Solid state devices using organic materials as the active part, or using a combination of organic materials with other materials as the active part; Processes or apparatus specially adapted for the manufacture or treatment of such devices, or of parts thereof
    • H01L51/05Solid state devices using organic materials as the active part, or using a combination of organic materials with other materials as the active part; Processes or apparatus specially adapted for the manufacture or treatment of such devices, or of parts thereof specially adapted for rectifying, amplifying, oscillating or switching, or capacitors or resistors with at least one potential- jump barrier or surface barrier multistep processes for their manufacture
    • H01L51/0504Solid state devices using organic materials as the active part, or using a combination of organic materials with other materials as the active part; Processes or apparatus specially adapted for the manufacture or treatment of such devices, or of parts thereof specially adapted for rectifying, amplifying, oscillating or switching, or capacitors or resistors with at least one potential- jump barrier or surface barrier multistep processes for their manufacture the devices being controllable only by the electric current supplied or the electric potential applied, to an electrode which does not carry the current to be rectified, amplified or swiched, e.g. three-terminal devices
    • H01L51/0508Field-effect devices, e.g. TFTs
    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06KRECOGNITION OF DATA; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K19/00Record carriers for use with machines and with at least a part designed to carry digital markings
    • G06K19/06Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
    • G06K19/067Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
    • G06K19/07Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
    • G06K19/077Constructional details, e.g. mounting of circuits in the carrier
    • G06K19/0772Physical layout of the record carrier
    • G06K19/0773Physical layout of the record carrier the record carrier comprising means to protect itself against external heat sources
    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06KRECOGNITION OF DATA; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K19/00Record carriers for use with machines and with at least a part designed to carry digital markings
    • G06K19/06Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
    • G06K19/067Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
    • G06K19/07Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
    • G06K19/077Constructional details, e.g. mounting of circuits in the carrier
    • G06K19/07745Mounting details of integrated circuit chips
    • G06K19/07747Mounting details of integrated circuit chips at least one of the integrated circuit chips being mounted as a module
    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06KRECOGNITION OF DATA; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K19/00Record carriers for use with machines and with at least a part designed to carry digital markings
    • G06K19/06Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
    • G06K19/067Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
    • G06K19/07Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
    • G06K19/077Constructional details, e.g. mounting of circuits in the carrier
    • G06K19/07749Constructional details, e.g. mounting of circuits in the carrier the record carrier being capable of non-contact communication, e.g. constructional details of the antenna of a non-contact smart card
    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06KRECOGNITION OF DATA; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K19/00Record carriers for use with machines and with at least a part designed to carry digital markings
    • G06K19/06Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
    • G06K19/067Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
    • G06K19/07Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
    • G06K19/077Constructional details, e.g. mounting of circuits in the carrier
    • G06K19/07749Constructional details, e.g. mounting of circuits in the carrier the record carrier being capable of non-contact communication, e.g. constructional details of the antenna of a non-contact smart card
    • G06K19/07773Antenna details
    • G06K19/07777Antenna details the antenna being of the inductive type
    • G06K19/07779Antenna details the antenna being of the inductive type the inductive antenna being a coil
    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06KRECOGNITION OF DATA; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K19/00Record carriers for use with machines and with at least a part designed to carry digital markings
    • G06K19/06Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
    • G06K19/067Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
    • G06K19/07Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
    • G06K19/077Constructional details, e.g. mounting of circuits in the carrier
    • G06K19/07749Constructional details, e.g. mounting of circuits in the carrier the record carrier being capable of non-contact communication, e.g. constructional details of the antenna of a non-contact smart card
    • G06K19/07773Antenna details
    • G06K19/07777Antenna details the antenna being of the inductive type
    • G06K19/07779Antenna details the antenna being of the inductive type the inductive antenna being a coil
    • G06K19/07783Antenna details the antenna being of the inductive type the inductive antenna being a coil the coil being planar
    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06KRECOGNITION OF DATA; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K19/00Record carriers for use with machines and with at least a part designed to carry digital markings
    • G06K19/06Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
    • G06K19/067Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
    • G06K19/07Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
    • G06K19/077Constructional details, e.g. mounting of circuits in the carrier
    • G06K19/07749Constructional details, e.g. mounting of circuits in the carrier the record carrier being capable of non-contact communication, e.g. constructional details of the antenna of a non-contact smart card
    • G06K19/07773Antenna details
    • G06K19/07786Antenna details the antenna being of the HF type, such as a dipole
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H01L23/00Details of semiconductor or other solid state devices
    • H01L23/52Arrangements for conducting electric current within the device in operation from one component to another, i.e. interconnections, e.g. wires, lead frames
    • H01L23/538Arrangements for conducting electric current within the device in operation from one component to another, i.e. interconnections, e.g. wires, lead frames the interconnection structure between a plurality of semiconductor chips being formed on, or in, insulating substrates
    • H01L23/5388Arrangements for conducting electric current within the device in operation from one component to another, i.e. interconnections, e.g. wires, lead frames the interconnection structure between a plurality of semiconductor chips being formed on, or in, insulating substrates for flat cards, e.g. credit cards
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H01L25/00Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof
    • H01L25/03Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L51/00, e.g. assemblies of rectifier diodes
    • H01L25/04Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L51/00, e.g. assemblies of rectifier diodes the devices not having separate containers
    • H01L25/046Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L51/00, e.g. assemblies of rectifier diodes the devices not having separate containers the devices being of a type provided for in group H01L51/00
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H01L51/00Solid state devices using organic materials as the active part, or using a combination of organic materials with other materials as the active part; Processes or apparatus specially adapted for the manufacture or treatment of such devices, or of parts thereof
    • H01L51/0001Processes specially adapted for the manufacture or treatment of devices or of parts thereof
    • H01L51/0002Deposition of organic semiconductor materials on a substrate
    • H01L51/0003Deposition of organic semiconductor materials on a substrate using liquid deposition, e.g. spin coating
    • H01L51/0004Deposition of organic semiconductor materials on a substrate using liquid deposition, e.g. spin coating using printing techniques, e.g. ink-jet printing, screen printing
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H01L51/00Solid state devices using organic materials as the active part, or using a combination of organic materials with other materials as the active part; Processes or apparatus specially adapted for the manufacture or treatment of such devices, or of parts thereof
    • H01L51/0001Processes specially adapted for the manufacture or treatment of devices or of parts thereof
    • H01L51/0024Processes specially adapted for the manufacture or treatment of devices or of parts thereof for forming devices by joining two substrates together, e.g. lamination technique
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H01L2924/00Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
    • H01L2924/0001Technical content checked by a classifier
    • H01L2924/0002Not covered by any one of groups H01L24/00, H01L24/00 and H01L2224/00
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H01L2924/00Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
    • H01L2924/10Details of semiconductor or other solid state devices to be connected
    • H01L2924/11Device type
    • H01L2924/12Passive devices, e.g. 2 terminal devices
    • H01L2924/1204Optical Diode
    • H01L2924/12044OLED
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H01L51/00Solid state devices using organic materials as the active part, or using a combination of organic materials with other materials as the active part; Processes or apparatus specially adapted for the manufacture or treatment of such devices, or of parts thereof
    • H01L51/0096Substrates
    • H01L51/0097Substrates flexible substrates
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H01L51/00Solid state devices using organic materials as the active part, or using a combination of organic materials with other materials as the active part; Processes or apparatus specially adapted for the manufacture or treatment of such devices, or of parts thereof
    • H01L51/50Solid state devices using organic materials as the active part, or using a combination of organic materials with other materials as the active part; Processes or apparatus specially adapted for the manufacture or treatment of such devices, or of parts thereof specially adapted for light emission, e.g. organic light emitting diodes [OLED] or polymer light emitting devices [PLED];
    • H01L51/52Details of devices
    • H01L51/5237Passivation; Containers; Encapsulation, e.g. against humidity

Abstract

The invention relates to an electronic circuit (1), comprising electronic components (3) which consist especially of organic material. Said component(s) (3) are situated between at least two layers (2, 2') forming a barrier, and are protected against the influence of light and/or air and/or water by these layers. Electronic circuits constructed in this way enable (RFID) tags to be mass produced.

Description

Encapsulated organic electronic component, process for its preparation and its use

The present invention relates to a to light and / or air and / or water hermetically sealed electronic circuit comprising in particular organic material, a process for their preparation and their use as tag, sensor or the like.

Radio frequency identification (RFID) tags are being built with metallic coil and a silicon chip. They are used, for example, for logistics purposes, access control or similar.

discloses a simple encapsulation of an organic field effect transistor from DE 100 40 442.1.

Because of their relatively high production costs they are for mass applications, such as electronic barcodes, atschutz for Plagi- or as disposable items not economical. RFID

Tags are passive as possible, ie without a battery to work. They draw their energy from a coil which is driven by a reading device in resonance. In this case, a memory is activated in an electronic chip of the tag and examples play as stored information, such as sender and addressee for logistics applications read.

The range between reader and tag is determined by the power of the radiation of the reader, which are certain frequency ranges, such as 125 kHz or

13.56 MHz, as well as the size and quality of the coil or antenna of the tag. For passive tags that range is typically less than 60 cm. The structure of the coil depends strongly on the used carrier frequency, as beispiels- is a wound at a frequency of 125 kHz

Coil with usually used several hundred turns, while a flat coil of about ten turns is used at a frequency of 13.56 MHz.

Organic electronic circuits can be manufactured very cost low. They are therefore suitable for the construction of tags that can therefore be employed for mass markets and as disposable products. One also thinks of electronic tickets, the theft protection, baggage check or, for example, electronic postage stamps, serzeichen electronic water and much more.

However, electronic circuits in particular organic material have two major drawbacks. On the one hand are the organic materials to environmental factors such as light, air and water, very sensitive and age under this influence relatively quickly. On the other are significantly worse than metallic antennas in polymer technology or even in printing technology antennas produced. They have a higher electrical resistance and lower guerrilla te. The result is that those based on organic materials electronic components and tags little lifespan and are suitable only for a very short range.

Halfway comparable this aging problem is in organic light emitting diodes, or OLEDs. At present, glass is used here as the substrate and stuck a glass plate over the parts so that a fairly good hermetic encapsulation is ensured. Glass, however, is not possible for the intended purposes of this invention application of mechanical and cost reasons. Conventional organic substrates are transparent to light, air and water and thus also is not suitable. Metallized substrates, such as are used for example in the food packaging area or at the air-tight packaging of sensitive materials, used in particular in RFID tags also obviously out of the question, since the metal layer is in the S ubstrat a coupling of the coil to the reader prevented. The result is a Faraday cage, or a metallic shield.

Object of the present invention is therefore to provide a structure for an electronic circuit comprising in particular organic material, wherein the electronic circuit against light, air and water is hermetically sealed and thus does not occur, the aging problem. At the same time, the electronic circuit should be simple and inexpensive to manufacture so produced therefrom tags for mass markets and as disposable products can be used, and in particular with coils, antennas can be combined without a metallic shield occurs.

The present invention is an electronic circuit comprising electronic components of in particular organic material, wherein the / the components between at least two a barrier forming layer is arranged (2, 2 ') is / are, and of these against the influence of light and / or air and / or liquid are protected as water.

This hermetic sealing or encapsulation is achieved in that materials are used which form a possible liehst large barrier against environmental influences such as light, air and water. In such a layer, the circuit is in a conventional manner, preferably by printing techniques, arranged or constructed. Another identical or operatively similar layer is disposed over the circuit by bonding or laminating, so that the organic circuit is similar to well-encapsulated, as described above for the OLEDs. It is only necessary to ensure that are freely accessible from the circuit electrical contact points.

The barrier layer preferably comprises at least one layer of plastic film, for example, organic polymer such as polyvinyl lyvinylphenol, polymethyl methacrylate, polysulfone, polycarbosilane nat, polyether ketone, polyethylene terephthalate, polyethylene, polyvinyl lyimid or any mixture of these polymers.

According to a preferred embodiment of the invention, the upper barrier layer forms a covering layer of an organic field-effect transistor (OFET), which may also be a kind of substrate or a flexible film substrate with a Ga- is according to one embodiment on this substrate or carrier teelektrode that is applied to the components with the barrier layer. Then, in order to ensure a simple and precise adjustment of the cover layer, the gate electrode is deposited on the upper substrate layer and preferably coated with a non-crosslinked insulator. At the same time, a structure of the substrate, drain and source electrode is provided with a semi-conductive layer and insulating layer provided in which the insulation layer is still uncrosslinked.

In the two non-crosslinked insulating layers, again preferably embedded alignment marks, so that with reference to the alignment marks, a simple and precise positioning of the superstructure (substrate with the gate electrode and uncrosslinked I- solatorschicht) on the base (substrate having source / drain electrodes, semiconducting layer, and uncrosslinked insulator layer) is possible.

The application of the two assemblies to each other is effected for example by pressing on, pressing, rolling, etc.

For curing the insulation layer of the finished OFET is irradiated for a defined time and / or annealed.

When adjustment marks to fixing rails, optical marks or crosses or the like are suitable. This produces an organic field-effect transistor on a substrate or a support, having the following structure: source / drain electrode on the substrate in a semiconducting layer embedded with an adjacent layer of insulating material, which layer is still uncrosslinked, and thereafter a gate electrode adjacent to the one outer layer.

A method for producing such OFET, comprising the steps of: on a substrate a source and a drain electrode are formed at least in each, which are coated with a semiconducting layer on which a layer having not been cross-linked insulator is applied; - on a second substrate, a gate electrode is applied with an overlying layer of non-crosslinked insulator and both carriers are then brought to each other so that the two uncrosslinked insulator layers come to rest on one another and then the crosslinking of the insulator is initiated.

The plastic films mentioned above can either itself be used as a barrier layer, by an appropriate doping or crosslinking, or with a, a shield may be provided barrier layer forming. This separate barrier layer may be about be a metallic layer which is deposited on the base film or laminated. Suitable metals for this purpose are aluminum, copper or chromium. The plastic film usually has a thickness between 10 and 100 .mu.m, preferably 30-60 .mu.m. A deposited metal layer is usually between 5 and 100 .mu.m, preferably between 5 and 50 microns thick.

On the other hand, the barrier may also be formed by a non-metallic layer. This non-metallic material is selected such that it light and / or water and / or absorbs oxygen or absorbed. Suitable non-metallic coatings to form a barrier against light, air and / or water are therefore largely, for example, layers of dense particles that are arranged to overlap as possible. commissioning appropriate materials form graphite or inorganic oxides with platelet structure.

The barrier layer used for encapsulating may comprise barrier layers of the same or different type in a preferred embodiment of the present invention. In other words, the forming the barrier (s) layer (s) can / can combine, for example, a metallic barrier coating and a non-metallic barrier coating. In general, the barrier-forming layer can thus be a multilayer system. A suitable construction comprises for example a polyethylene terephthalate film, which is coated with aluminum, wherein the aluminum miniumbeschichtung on a polyethylene terephthalate film is laminated again.

The film substrate may be transparent but also completely opaque. An opaque film even has the advantage that the harmful effects of light in the organic electronics be suppressed in an optimum manner.

The inventive electronic circuit formed may thus comprise all the essential components of a circuit. Preferably, however, the active components are encapsulated mainly. These are especially the integrated circuit, transistors, diodes, and more particularly rectifier diodes or similar active components. the active components are preferably at least partly made of organic material.

The term "organic material" as used herein encompasses all types of organic, organometallic and / or inorganic

Plastics which are known in English such as "plastics". These are all kinds of fabrics with exception of the semiconductors which form the conventional diodes (germanium, silicon), and the typical metal conductors, a restriction in the dogmatic sense to organic material as a carbon-containing material is therefore not provided, rather, thought of the widespread use of eg silicones. Furthermore, the term to any limitation on the molecular size, particularly to poly- ere and / or subject oligomeric materials, but it is certainly also the use of "s all olecules" possible.

And passive components such as resistors, capacitors, coils can be covered by the inventive electronic circuit. Just as well, only the sensitive components such as the organic integrated circuit may keep self-developed and other parts such as a rectifier diode, which can be then produced in the conventional silicon technology, can be located outside.

The electronic circuit encapsulated invention is not only used for tags but wherever a metallized substrate is not an obstacle for use, that is, for example, for sensors or other electronic components that can be realized with organic electronics.

A particular advantage is obtained for the case to be used for film substrates layer systems or film systems with metal layers. In this case, the metal layers can also be integrated in the corresponding circuit, for example by a suitable patterning as electrical conductors or as passive components such as capacitors, coils, resistors may be formed.

Accordingly, the invention also provides a process for producing an electronic circuit comprising electronic components of in particular organic material, comprising the steps of: forming a building a barrier layer, placing electronic components to an electronic circuit on the barrier layer,

th applying electrical traces to electrical contacting,

Applying at least one further barrier layer over at least part of the electronic components to the seal against light and / or air and / or water.

The electronic circuit may just as easily

Day or sensor also be formed and the inventive method can be used.

In the following the invention with reference to the appended drawings will be explained in more detail voltages wherein:

FIG. 1 shows an encapsulated electronic circuit according to the invention shows in section;

. Fig. 2, the electronic circuit shown in Figure 1 shows in a schematic plan view;

Fig. 3a) shows to c) combinations of the electronic circuit of the invention with a coil or a rod antenna;

Fig. 4 is a preferred embodiment of the combination of an electronic circuit according to the invention with a coil; and

Fig. 5 is another preferred embodiment of such a combination.

Figure 6/7 show the preparation of an OFET of a lower construction having source / drain electrodes and semiconducting

Layer and a superstructure with the gate electrode, wherein the two assemblies are connected via an insulating layer.

In Fig. 1 an inventive electronic circuit 1 is shown, which electronic components contains 3. This e- lektronischen components 3 can be wholly or partly made of organic materials, so-conducting be constructed semi-conductive or non-conductive polymer plastics. The e- lektronischen components 3 are mounted on a a barrier bilden- the layer 2 arranged, which is multi-layered in the embodiment shown. The electronic components 3 or chips can be bonded as such to the layer 2, or held stationary in any way thereto. You can a- about forms directly to excluded by appropriate printing process to be.

The layer 2 itself is constructed in the shown embodiment consists of three layers 4, 5 and 6. FIG. The bottom layer 4 is suitable for the application purposes plastic film such as polyethylene, polyethylene terephthalate, polyimide or the like flexible materials. The second layer 5 is formed as the actual barrier layer. This is preferably a metallic layer of aluminum, copper or chromium, which is vapor-deposited either as a film on the layer 4 auflami- is defined or to these. As mentioned above, the barrier layer may also consist of a non-metallic substrate. On the barrier layer 5, a further layer 6 is glued in the form of a plastic film or laminated.

On this layer 2 next to the electronic components 3, electrical contacts 8 are formed or arranged. They are used to later connect the electronic circuit 1 with for example a coil or antenna, so to build, for example, an RFID tag. The contacts 8 may consist of organic conducting materials and advertising applied, for example in the printing process on the film substrate to. Of course, also possible to use metallic contacts, for example of copper. These contacts 8 are electrically connected to predetermined ones of the electronic components 3 by lines. 7

Over the electronic components 3 and thus partially the pipes 7 is a further barrier 2 'which has the same structure as the first layer 2, disposed in a hermetically sealing. It is in the exemplary embodiment shown, therefore, play back a multi-layer system consisting of two layers 4, 6 of plastic film, between which a barrier layer 5 is arranged. The materials for these layers may be chosen from the same, which are useful for the further layer. 2 For the manufacturing process position, it is advantageous, as such either to glue or laminate this second upper and covering or encapsulating barrier layer. It can be seen that the individual electronic components of the layers 2 and 2 'is completely enclosed and are therefore optimally protected against environmental influences.

Fig. 2 shows the structure of the electronic circuit 1 only in a plan view, from which the electrical connection to the contacts is located outside the encapsulation particularly shown. 8

Reference to the following FIG. 3 will now be described, as it is possible in spite of possibly metallized encapsulation of the electronic circuit 1, a greater range of an antenna for the construction example of an RFID

Tags is required to achieve than with a full integration of organic electronics to the coil.

The invention constructed in accordance with electronics namely such that they can be attached as a kind of label with the exposed electrical contacts on a corresponding coil or antenna 9, 10th The respective ends of the coil (Fig. 3a) and 3b)) or a rod-shaped antenna (Fig. 3c)) can be coupled to the encapsulated electronics by simply sticking. so the whole structure is obtained a working day.

In this structure, the electronics are separated from the spool. It can therefore be used as a conventional metal coil antenna having a correspondingly high quality for the highest possible range. Also, very large antennas arrival can be connected without the economic disadvantage that the more complex technique for the production of the organic circuit is required only for a small part of the area.

Also, a further step is saved in production, which is generally necessary for flat coils, namely the connection of the respective coil ends 14, 15 in another plane. Here, the application possibility that, for example in the packaging industry can price- values ​​printing method antennas on the packagings are printed and in a last step the electronics described above corresponding stickers are glued on.

It is advantageous here that the corresponding electrical

Pads are quite large to allow easy adjustment. If the connections are standardized, the application can also be done at a later stage. In retail, so could any company ben glued-on their own tags. In this structure, a metallized area of ​​the overall electronics for RF connection of the antenna itself is not disturbing, since this is above the coil turns and not enclosed by the coil.

In the embodiments according to FIGS. 4 and 5, the electronic circuit 1 according to the invention is combined in a particularly efficient and cost-saving manner with an antenna 9, 10. Essential aspect here is that the "transponder of the circuit" is applied directly to the substrate of the antenna 9, 10th is then used as the barrier layer 2 is a homogeneously metalized plastic film 4, 5, for example, used again made of polyethylene, polyethylene terephthalate or polyimide with evaporated aluminum. drive through a Strukturierungsver- a coil is formed on the metal layer. 5 In places where the actual circuit is located 3, aeration can be a metal layer, which then serves as a barrier or encapsulation encryption. It is also conceivable, of course, to introduce this metal layer by appropriate patterning directly in the circuit with, for example, as conductors or as passive components. In this case, would be a multi-layer system is advantageous, in which a layer for encapsulation development and can be used for application in the circuit.

The advantage of this construction is that the whole identification tag can be manufactured as an integrated system, which in particular reduces costs.

In FIG. 4, an antenna 9, 10 is on a barrier layer 2 may be formed as described above is formed, which consists for example of a metal or a conductive polymer. Inside the antenna guide is an electronic circuit 1, for example, a silicon chip or a polymer chip that is to be electronically connected to both ends 14, 15 of the antenna 9, 10th For this purpose, the presented ones shown, by a dotted line area 13 of the layer 2 is folded such that the end 14 of the antenna is on the contact surface 12 to lie. After folding, the electrical circuit 3 is connected via the conductor tracks 7 with the antenna 9, 10th In order to prevent a short circuit of the folded conductor path 7 to the antenna 9, 10, must be made before folding an insulating layer on the windings of the antenna 9 are applied 10th This insulating layer can serve as an adhesive at the same time to fix the folded corner 13 permanently. Through this type of connection of the hitherto conventional process step, namely the additional application of a structured strip conductor, can be saved.

FIG. 5 is located on the layer 2, an antenna 9, 10 as shown in Fig. 4. An electronic circuit 3 is outside the antenna 9 is disposed in one corner 13 of the layer 2 10. This corner 13 is then folded over so that the contact area 8 on the bonding 12 of the antenna 9, 10 comes to lie. In order to prevent a short circuit of the folded conductor path 7 to the antenna 9, 10, rαuss be applied to the windings of the antenna 9, 10 prior to folding over an insulating layer. This insulating layer can serve as an adhesive at the same time to fix the folded corner 13 permanently.

The special feature of this embodiment is that the electronic circuit 3 is connected to the antenna 9, 10 through the Umklappvorgang and, on the other hand, the electronic circuit is encapsulated 3, through the substrate material, which must be suitable selected.

In the figure 6 one can see the left upper structure 16 and base 17 separated overall, the arrows 18 indicate the direction in which the two structures are pressed together. The superstructure 16 comprises a substrate 19 such as a flexible PET film on which a thin structured in the form of a gate electrode layer 20 of ITO (ITO = Indium Tin Oxide) is located. The gate electrode 20 is embedded in, for example, approximately 100 nm thick layer 21 of insulator material uncrosslinked poly (4-hydroxystyrene) (PHS) with the crosslinking agent Hexa ethyoxy- ethylmelamin (HMMM). In this layer, the insulator material is currently not crosslinked, however, necessary for the cross-linking components containing (cross linker, ie HMMM and a catalyst such as camphorsulfonic acid (CSA). The base 17 also has a substrate 19 having a patterned layer 20 of ITO, which here the source and drain electrodes formed thereon. the source / drain electrodes are embedded as an active semiconductor material in a semiconductive layer 22, for example of poly (3-octylthiophene) P30T. on the semiconducting layer 22 is an approximately lOOnm thick layer 21 of insulator material PHS and also uncrosslinked the necessary for crosslinking components (crosslinker and catalyst). superstructure 16 and base 17 are so pressed against each other (Figure 7), that the two layers are 21 to lie on one another and bond to the surface with each other. In this case, with the aid of alignment marks adjusted so that source / drain and the gate electrode in a desired Wei se are superimposed. In a concluding step, the entire structure is annealed for one hour at 130 ° C and thus fi xed.

The first presented in this embodiment, separate production of the gate electrode on a second substrate and the adjustment on the mounting substrate / source, drain electrode / semiconductor / insulator facilitates the construction of OFETs in that no patterning of the upper electrode (source / drain or gate, depending on the structure) by photolithography more occurs at the attacked the lower organic layers and / or partially dissolved. In addition, the so manufacturers Asked OFET is encapsulated and therefore protected from mechanical damage and environmental influences.

The invention relates to an electronic circuit (1) comprising electronic components (3) made in particular organic material, wherein the / the components (3) between at least two a barrier forming layer (2, 2 *) are arranged, and of these against the influence of light and / or air and / or water are protected. Thus constructed electronic circuits enable the generation of particular RFID identification tags on bulk buying.

Claims

claims
1. Electronic circuit (1) comprising electronic components (3) made in particular organic material, wherein the / the components (3) between at least two forming a barrier layers (2, 2 ') are arranged / and of these, against the influence are protected from light and / or air and / or a liquid such as water.
2. An electronic circuit according to claim 1, characterized in that the barrier layer (2) holds at least one layer of plastic film u.
3. Electronic circuit according to claim 1 or 2, characterized in that it is an organic field-effect transistor, is realized with the following structure: source / drain electrode on the first, a barrier forming layer, a substrate, in a semiconducting layer embedded with an adjacent layer of i- solierendem material, which layer is still uncrosslinked, and then to the non-crosslinked insulation layer, a gate electrode to which the second a barrier forming layer a covering layer is connected.
4. An electronic circuit according to claim 3, wherein the
A substrate covering layer and / or carrier such as a flexible film.
5. An electronic circuit according to any preceding arrival sayings 3 or 4, in which are integrated in the non-crosslinked insulation layer alignment marks.
6. Electronic circuit according to one of the preceding claims, characterized in that the barrier layer (2) is a metallic and / or non-metallic layer.
7. An electronic circuit according to one of claims 1 to 6, characterized in that the metallic layer of aluminum, copper or chromium is selected.
8. Electronic circuit according to one of claims 1 to 7, characterized in that the components (3) are selected from active components.
9. An electronic circuit according to claim 8, marked thereby characterized, that the active components are in particular an integrated circuit and / or a rectifying diode.
10. Electronic circuit according to one of claims 1 to 9, characterized in that the components (3) are selected from passive components.
11. Electronic circuit according to one of claims 1 to 10, characterized in that the passive components are, in particular resistors, capacitors or coils.
12. An electronic circuit according to one of claims 1 to 11, characterized in that it comprises a coil arrangement (9, 10) or the like comprises or is combined with such.
13. Electronic circuit according to one of the preceding claims, characterized in that they with outer contacts (8) is conductively connected.
14. A method for manufacturing an electronic circuit comprising electronic components (3) made in particular organic material, in particular according to one of claims 1 to 13, comprising the steps of:
Establishing a a barrier forming layer (2) i /
Placing of electronic components (3) to an electronic circuit (1) on the barrier layer (2),
Applying electrical conductor tracks (7) to electrical contacts (8),
Applying at least one barrier layer (2) comprising another layer (2 ') over the electronic components (3) to protect it against light and / or air and / or water.
15. The method according to claim 14, characterized in that the electronic circuit (1) is formed as a day.
16. The method according to claim 14, characterized in that the electronic circuit (1) is constructed as a sensor.
17. A method for manufacturing an electronic circuit according to one of claims 1 to 13, wherein the electrode on a support at least a respective source and a drain formed which are coated with a semi-conducting layer on which is applied a layer having not been cross-linked insulator is (preparation of the base); on a second substrate, a gate electrode with an overlying layer of non-crosslinked insulator (Preparation of the superstructure) and is applied - both carriers are brought to each other then that the two uncrosslinked insulator layers come to rest on one another and then the crosslinking of the insulator is initiated.
18.Verwendung an electronic circuit (1) according to any one of claims 1 to 13 for the manufacture of a tag.
9.The use of an electronic circuit (1) according to any one of claims 1 to 13 for the manufacture of a sensor.
EP01962659A 2000-08-18 2001-08-17 Encapsulated organic-electronic component, method for producing the same and use thereof Withdrawn EP1309994A2 (en)

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DE10040442 2000-08-18
DE10040442 2000-08-18
DE10120687A DE10120687A1 (en) 2001-04-27 2001-04-27 Encapsulated organic-electronic circuit has electronic components especially made of organic material and arranged between at least two layers forming barrier
DE10120685A DE10120685C1 (en) 2001-04-27 2001-04-27 Encapsulated organic-electronic circuit has electronic components especially made of organic material and arranged between at least two layers forming barrier
DE10120687 2001-04-27
DE10120685 2001-04-27
PCT/DE2001/003164 WO2002015264A2 (en) 2000-08-18 2001-08-17 Encapsulated organic-electronic component, method for producing the same and use thereof

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