EP1660831A1 - K lteger t mit oled-display - Google Patents
K lteger t mit oled-displayInfo
- Publication number
- EP1660831A1 EP1660831A1 EP04764619A EP04764619A EP1660831A1 EP 1660831 A1 EP1660831 A1 EP 1660831A1 EP 04764619 A EP04764619 A EP 04764619A EP 04764619 A EP04764619 A EP 04764619A EP 1660831 A1 EP1660831 A1 EP 1660831A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- display
- oleds
- refrigeration device
- oled
- refrigerator
- 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- Withdrawn
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D29/00—Arrangement or mounting of control or safety devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D2400/00—General features of, or devices for refrigerators, cold rooms, ice-boxes, or for cooling or freezing apparatus not covered by any other subclass
- F25D2400/36—Visual displays
- F25D2400/361—Interactive visual displays
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D27/00—Lighting arrangements
Definitions
- the present invention relates to a refrigerator with a display and a display that can preferably be used for refrigerators.
- Constant information such as the type of refrigerator
- a sticker or nameplate for example.
- changing information such as the temperature inside the refrigerator, cannot be displayed in this way.
- LCD Liquid Crystal Display
- the present invention was therefore based on the object of providing a refrigeration device with a display or a display in particular for use for a refrigeration device, on which self-luminous, arbitrarily definable forms of picture elements can be displayed.
- a refrigeration device with a display comprising at least one organic light-emitting diode (OLED).
- OLED organic light-emitting diode
- the display is from a wide range
- the display can thus be arranged on the refrigeration device in a wide variety of locations. It is not necessary that that
- Display is in the eye level of the user of the refrigerator.
- the display can also be curved, for example following a curved housing contour of the refrigeration device, since OLEDs can also be applied to curved surfaces.
- OLED displays are very bright, they can be arranged in one if the display is arranged
- Interior of the refrigerator can also be used as interior lighting for the refrigerator. Low voltage is sufficient for the voltage supply of the OLEDs. In addition, OLEDs consume little energy.
- the display comprises a plurality of OLEDs, which each form picture elements of the display, an OLED preferably forming a picture element of the display. This allows characters and symbols with any outlines to be shown on the display.
- the picture elements or OLEDs are particularly preferably arranged in a matrix.
- the organic light-emitting diodes generally consist of a substrate, an electrode, one or a plurality of organic layers and a counter electrode.
- the components mentioned are generally in the form of thin layers which are stacked on top of one another in a “sandwich construction”.
- An example of an OLED component for use for a display device is described in DE 102 32 937 A1.
- the substrate is usually transparent, with glass or quartz being particularly preferred.
- Plastic films or glass / plastic laminates can also be used as a substrate. Plastics such as polyethylene terephthalate (PET) or polyethylene naphthalate (PEN) can be used.
- an electrically conductive transparent layer on the substrate as the electrode is usually an electrically conductive transparent layer on the substrate as the electrode.
- This preferably consists of a transparent, electrically conductive oxide material, such as indium tin oxide (ITO).
- ITO indium tin oxide
- other transparent conductive materials such as thin metal films, can also be used.
- the transparent conductive electrode layer preferably serves as an anode.
- each organic layer can be configured to perform one or more functions, such as hole injection, hole transport, electron injection, electron transport and / or light emission (electroluminescence). However, it can also be a simple intermediate layer.
- the organic layers can consist of polymers, oligomers or small functional molecules. For example, they can be formed from a solution by thermal evaporation or by wet chemical means. In order to give the at least one organic layer a structure, this can be applied using various printing techniques, for example.
- each layer comprising the OLED can be in the range between approximately 10 nanometers and 20 micrometers and is usually in the range between 50 nanometers and 20 micrometers.
- a voltage is applied between the electrode and the counterelectrode, charge carriers are injected into the organic layers, recombination takes place and part of the recombination energy leaves the OLED as photons.
- the photons pass through the transparent electrode layer and the transparent substrate and are visible as emitted light.
- the OLEDs are preferably protected by encapsulation, since both the organic layers and some electrode materials are very sensitive to oxidation by oxygen and moisture.
- Adjacent OLEDs of the display must be separated from one another in a suitable manner in order to be able to act and be controlled as individual image elements, such as image points.
- the material layers from which the OLEDs are constructed are preferably in the form of strips which intersect in the picture elements of the display in a plan view of the display.
- a crossing point preferably forms an image point or an independent OLED of the display.
- the electrode layers, such as the anode layers and cathode layers and the electroluminescent layers, can be formed in intersecting strips, the crossing points forming a matrix.
- DE 102 32 937 A1 shows a display with electrodes formed in strips.
- the electroluminescent layers of adjacent OLEDs can be delimited from one another by an insulating material.
- DE 102 32 937 A1 uses an insulating polysiloxane structure for this purpose, in which windows are formed in which the electroluminescent layers of the OLEDs are located. Structures of this type are also described in DE 101 33 686 A1, DE 101 33 685 A1 and DE 101 33 684 A1.
- the display preferably comprises a control device which controls the picture elements in the matrix separately from one another.
- the control can be passive or active. In the case of passive control, current is applied to the corresponding rows and columns of the strip-shaped electrode layers for each picture element to be controlled.
- DE 101 33 685 A1 shows a passive matrix driven display.
- active control of the picture elements In such an actively addressed display, two transistors are usually integrated in each picture element. One of the transistors acts as a switching element for pixel selection and the other as an analog amplifier. The transistors are, for example, thin film transistors.
- An example of an actively addressed OLED display is described in DE 100 09 204 A1.
- the display can have different types of OLEDs, which differ in their emitted color spectra.
- the different types of OLEDs generally include electroluminescent materials that emit light colors of different color spectra.
- displays with different colored pixels can be formed.
- DE 101 33 684 A1 describes a colored display which is composed of pixels which emit blue, green and red light.
- the display is preferably divided into a plurality of fields, each field comprising a plurality of OLEDs, preferably arranged in a matrix. At least two of the fields differ in their electroluminescent layers in the emitted color spectra.
- the display can have two fields, the picture elements or OLEDs emitting blue light in one of the fields and the picture elements or OLEDs in the other field emitting red light. Other colors such as green or yellow can also be used.
- the display of the refrigerator can form part of an operating panel of the refrigeration device. It can be used to display information by controlling individual picture elements to display characters. However, the display can also be used to illuminate or backlight the control panel. In this case, all picture elements of the display are then usually controlled.
- the display can also be arranged in an interior of the refrigerator.
- An advantage of this is that, in addition to displaying information, the display can also be used to illuminate the respective interior of the refrigerator.
- the present invention also comprises a display which is formed from a plurality of individual displays arranged one on top of the other in a sandwich arrangement.
- Each of the individual displays comprises at least one OLED, but generally a plurality of OLEDs, preferably arranged in a matrix, which each form picture elements, preferably pixels, of the individual displays.
- the OLEDs or picture elements of the various individual displays can be arranged in such a way that they do not overlap, at least partially or completely, in a plan view of the display.
- Such a display has the advantage that information in the form of characters can be displayed on one of the individual displays, preferably the top one, while at the same time a display located underneath can form a backlight.
- the characters or the backlight are preferably executed in different colors or color spectra.
- the display also has the advantage that light colors of OLEDs arranged one above the other can be mixed. This can be used to enhance contrasts, for example.
- a colored display can be created by arranging three individual displays with red, blue and green picture elements one above the other so that all light colors can be shown.
- FIG. 1 is a perspective view of a refrigerator 1 according to the present invention with a display 2.
- FIG. 2 shows a plan view of the display 2 from FIG. 1 in an enlarged representation;
- FIG. 3 shows a section 7 of the display 2 from FIG. 2;
- FIG. 4 shows a cross section through the display section 7 from FIG. 3 along the line A-A;
- FIG. 5 shows an exploded view of the display section 7 from FIGS. 3 and 4;
- FIG. 6 is an exploded view of an alternative structure of the display 2 of FIGS. 2 and 3.
- FIGS. 2 and 3 shows a further alternative construction of the display 2 from FIGS. 2 and 3;
- FIG. 8 shows a cross section through a display 14 which is formed from two individual displays 35;
- FIG. 9 is a plan view of the control panel 3 of FIG. 1st
- a refrigerator 1 shows a refrigerator 1, which is a refrigerator 1. It has a display 2 and an operating panel 3.
- the display 2 and the control panel 3 are attached to the front of the housing 5 of the refrigerator 1 above a device door 4.
- the display 2 and the control panel 3 can also, but not shown, be located on the appliance door 4 on the outside wall 6 of the door or in an interior of the refrigerator 1.
- the latter preferably in combination with an at least partially transparent appliance door 4, so that the display can be read from outside the refrigerator 1 even without opening the appliance door 4.
- Fig. 2 shows the display 2 of FIG. 1 in a plan view.
- the display 2 is divided into several fields 9.
- information such as temperatures in the interior of the refrigerator 1, the time, operating information and brand logos or product numbers can be represented in the form of characters and symbols.
- each field 9 of the display 2 as shown in FIG. 3 for an enlarged section 7, comprises a multiplicity of organic light-emitting diodes (OLEDs) 20.
- OLEDs organic light-emitting diodes
- Each OLED 20 forms a picture element 10 in the form of a picture element or a pixel 10 of the display 2.
- the OLEDs 20 are arranged in a matrix in columns 11 and rows 12.
- the display section 7 shows the characters "00" of a product number which is shown in the bottom field 9 of the display 2.
- the characters "00" are shown on the display 2 by applying a voltage to corresponding OLEDs 20, causing the OLEDs to light up to be brought.
- FIG. 4 and 5 show a first possible construction of the display 2.
- FIG. 4 shows a cross section through the display section 7 of FIG. 3, specifically along the line AA.
- 5 shows the same display section 7 in an exploded view. 4 and 5, the display 2 initially comprises a glass or plastic plate 21 which forms the surface of the display 2 and serves as a substrate for the OLEDs 20.
- electrode strips 22 which serve as anodes for the OLEDs 20.
- the electrode strips 22 consist of indium tin oxide (ITO). They are arranged parallel to one another and spaced apart from one another. They correspond to columns 11 in FIG. 3.
- an emission layer 23 which comprises an electroluminescent material.
- counter electrode strips 24 which correspond to rows 12 of FIG. 3.
- the cathode strips 24 generally consist of one or more layers of metals.
- the cathode strips 24 are made up of two layers: a first layer formed from a low work function metal such as Ca, Mg, Ba or Li, and a second layer forming the first layer covering the environment, from a metal that is more stable to air and has a high work function, such as Ag or Al.
- a first layer formed from a low work function metal such as Ca, Mg, Ba or Li
- a second layer forming the first layer covering the environment, from a metal that is more stable to air and has a high work function, such as Ag or Al.
- further layers can be arranged between the anode strips 22 and the cathode strips 24, for example organic layers, which perform one or more of the following functions: hole injection, hole transport, electron injection, electron transport or other electroluminescent, ie light-emitting layers.
- the spaces 28 between the anode strips 22 and the spaces 29 between the cathode strips 24 can, for example, be
- Display 2 is a passive matrix OLED display.
- a voltage is applied to the anode strips 22 and cathode strips 24 associated with the corresponding OLEDs using a control device (not shown).
- Charge carriers are thereby injected into the emission layer 23 of the OLEDs 20, and a recombination takes place and some of the recombination energy leaves the OLEDs 20 as photons, which pass through the transparent anode strips 22 and the glass plate 21 and are visible as emitted light 13.
- Individual fields 9 of the display 2 according to FIG Characters and logos are displayed by driving selected OLEDs 20 of the display, but it is also possible to drive all the pixels 10. In this way, a single or several fields 9 of the display 2 can serve to illuminate, for example, an interior of the refrigerator 1 if the display 2 differs from the illustration 1 is arranged in an interior of the refrigerator 1.
- FIG. 6 shows another possible, second embodiment of a structure of the display 2.
- the same display section 7 is again shown as in the previous FIG. 5.
- the display 2 according to FIG. 6 comprises an emission layer designed as an emission strip 27.
- the emission strips 27 comprise an electroluminescent material and therefore functionally correspond to the emission layer 23 of the display 2 from FIG. 5.
- the emission strips 27 have the same spatial orientation as the cathode strips 24.
- the spaces 30 between the emission strips 27 can, which is not shown, however, be filled with a suitable separating material, such as an electrically insulating material.
- FIG. 7 shows a further, third alternative embodiment of a possible construction of the display 2.
- the display section 7 according to FIG. 2 is shown.
- the emission layer 23 comprises an insulating structure 31 in which windows 32 are formed. You are in a top view of the display 2 at the intersection of the anode strips 22 and the cathode strips 24.
- the windows 32 is an electroluminescent material. Each window 32 with electroluminescent corresponds to an OLED 20.
- electroluminescent materials can be used which emit light of different color spectra.
- characters with different colors can be shown on the display 2.
- the characters shown in the fields 9 can differ in color, for example.
- the characters in the first field 9 can be displayed in blue, those in the second field 9 in green and those in the third field 9 in red, and so on.
- the fields 9 must differ with regard to the electroluminescent materials that comprise the OLEDs.
- FIG. 8 shows a display 14 which is formed from individual displays 35, 35 'which are arranged one above the other in a sandwich construction.
- the individual displays 35, 35 'each have the same structure as the display section 7 of the display 2 shown in FIGS. 4 and 5.
- the separating layer 36 can be a glass plate, for example.
- the cathode strips 24 and the emission layer 23 are also transparent, so that the emitted light from the lower individual display 35 can pass through the upper individual display 35'.
- the display 14 formed from a plurality of individual displays 35, 35' has the advantage that For example, characters and symbols can be displayed in one color on the upper of the two individual displays 35 ', whereas the individual display 35 underneath forms a backlight for the individual display 35 above it in a different color.
- To form the backlight either all OLEDs 20 of the lower individual display 35 are controlled, or all OLEDs 20 of the lower individual display 35 except those which are located below the OLEDs 20 which are controlled in the individual display above them.
- the emission layers 23 of the individual displays 35, 35 ' have electroluminescent materials which emit light of different color spectra.
- the individual displays 35 of the display 14 can also have a structure as shown for the display section 7 of a display 2 in FIGS. 6 and 7.
- the OLEDs 20 of the individual displays 35 can also be arranged offset from one another in a plan view of the display 14.
- each OLED 20 of the individual displays 35 can form a pixel 10 on the display 14.
- three individual displays can be arranged one above the other, whose OLEDs emit blue, green and red light. This makes it possible to form a colored display with which white light and all light colors can be generated.
- FIG. 9 shows an enlarged view of the control panel 3 from FIG. 1.
- desired operating conditions such as interior temperatures
- the control panel has 3 buttons 38.
- the central button 38 has a display 40 on which changing information can be displayed, such as adjustable operating conditions of the refrigeration device, such as the interior temperature of the refrigeration device 1 here.
- the display 40 can be designed like one of the Displays 2 or 14 described in relation to the previous figures.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Illuminated Signs And Luminous Advertising (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
- Electroluminescent Light Sources (AREA)
- Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10339941A DE10339941A1 (de) | 2003-08-29 | 2003-08-29 | Kältegerät mit OLED-Display |
PCT/EP2004/009652 WO2005024324A1 (de) | 2003-08-29 | 2004-08-30 | Kältegerät mit oled-display |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1660831A1 true EP1660831A1 (de) | 2006-05-31 |
Family
ID=34202227
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP04764619A Withdrawn EP1660831A1 (de) | 2003-08-29 | 2004-08-30 | K lteger t mit oled-display |
Country Status (5)
Country | Link |
---|---|
US (1) | US8079225B2 (de) |
EP (1) | EP1660831A1 (de) |
CN (1) | CN100507415C (de) |
DE (2) | DE10339941A1 (de) |
WO (1) | WO2005024324A1 (de) |
Families Citing this family (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2881819B1 (fr) * | 2005-02-09 | 2012-11-23 | Saint Gobain | Guichet ouvrant en verre pour une installation refrigeree telle qu'un refrigerateur et installation refrigeree equipee d'un tel guichet |
DE102007012571A1 (de) * | 2006-07-15 | 2008-01-17 | Volkswagen Ag | Transparente Anzeigevorrichung für ein Kraftfahrzeug |
DE102008007287A1 (de) * | 2008-02-02 | 2009-08-06 | Leopold Kostal Gmbh & Co. Kg | Anzeigeelement |
TW201010157A (en) * | 2008-06-26 | 2010-03-01 | Du Pont | Organic light-emitting diode luminaires |
EP2182503A1 (de) * | 2008-11-04 | 2010-05-05 | Electrolux Home Products N.V. | Haushaltsgerät |
IT1392671B1 (it) * | 2009-01-12 | 2012-03-16 | Orieme Italia S P A | Dispositivo di regolazione ed indicazione della temperatura ambiente a lettura facilitata |
WO2011028479A2 (en) | 2009-08-24 | 2011-03-10 | E. I. Du Pont De Nemours And Company | Organic light-emitting diode luminaires |
US9353990B2 (en) * | 2010-02-23 | 2016-05-31 | Lg Electronics Inc. | Refrigerator including a terminal, and method for controlling same |
US9995831B2 (en) * | 2010-04-26 | 2018-06-12 | Koninklijke Philips N.V. | X-ray detector with improved spatial gain uniformity and resolution and method of fabricating such X-ray detector |
WO2014060919A2 (de) * | 2012-10-19 | 2014-04-24 | BSH Bosch und Siemens Hausgeräte GmbH | Hausgerätevorrichtung |
DE102012221499A1 (de) * | 2012-11-23 | 2014-05-28 | BSH Bosch und Siemens Hausgeräte GmbH | Haushaltskältegerät mit einem Anzeigemittel für einen Behälterdeckel |
DE102013205751A1 (de) * | 2013-04-02 | 2014-10-02 | BSH Bosch und Siemens Hausgeräte GmbH | Tür für ein Haushaltsgerät mit einer Türscheibe mit OLEDs |
DE102013104126A1 (de) * | 2013-04-24 | 2014-10-30 | Miele & Cie. Kg | Anzeige- und Bedienvorrichtung für einen Vorratsschrank und Vorratsschrank |
DE102014201892A1 (de) * | 2014-02-03 | 2015-08-06 | BSH Hausgeräte GmbH | Anzeige- und Bedieneinheit und Hausgerät damit |
DE102014218274A1 (de) * | 2014-09-12 | 2016-03-17 | BSH Hausgeräte GmbH | Haushaltskältegerät mit einem mit integrierter Anzeigeeinheit ausgebildetem Bedienelement zum Betätigen eines Deckels eines Frischhaltebehälters |
US11221596B2 (en) | 2015-06-26 | 2022-01-11 | Electrolux Home Products, Inc. | Hub for managing networked household appliances |
JP6790008B2 (ja) * | 2018-03-14 | 2020-11-25 | 株式会社東芝 | 検出素子および検出器 |
CN108759265A (zh) * | 2018-04-03 | 2018-11-06 | 青岛海尔股份有限公司 | 用于冰箱的门体组件、装配方法及冰箱 |
CN112146326B (zh) * | 2019-06-28 | 2024-02-06 | 代傲阿扣基金两合公司 | 温度指示和调整组件 |
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JP3800900B2 (ja) * | 1999-09-09 | 2006-07-26 | 三菱電機株式会社 | 冷凍冷蔵庫、冷凍冷蔵庫の運転方法 |
JP2001100641A (ja) * | 1999-09-29 | 2001-04-13 | Sanyo Electric Co Ltd | 表示装置 |
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-
2003
- 2003-08-29 DE DE10339941A patent/DE10339941A1/de not_active Withdrawn
-
2004
- 2004-08-30 CN CNB2004800248552A patent/CN100507415C/zh not_active Expired - Fee Related
- 2004-08-30 WO PCT/EP2004/009652 patent/WO2005024324A1/de active Application Filing
- 2004-08-30 EP EP04764619A patent/EP1660831A1/de not_active Withdrawn
- 2004-08-30 DE DE202004021748U patent/DE202004021748U1/de not_active Expired - Lifetime
- 2004-08-30 US US10/570,179 patent/US8079225B2/en not_active Expired - Fee Related
Non-Patent Citations (2)
Title |
---|
None * |
See also references of WO2005024324A1 * |
Also Published As
Publication number | Publication date |
---|---|
DE10339941A1 (de) | 2005-03-24 |
CN1846108A (zh) | 2006-10-11 |
US20070097042A1 (en) | 2007-05-03 |
DE202004021748U1 (de) | 2010-09-23 |
WO2005024324A1 (de) | 2005-03-17 |
CN100507415C (zh) | 2009-07-01 |
US8079225B2 (en) | 2011-12-20 |
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