WO2022223726A1 - Bedienelement und verfahren zur herstellung eines bedienelementes - Google Patents
Bedienelement und verfahren zur herstellung eines bedienelementes Download PDFInfo
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- WO2022223726A1 WO2022223726A1 PCT/EP2022/060612 EP2022060612W WO2022223726A1 WO 2022223726 A1 WO2022223726 A1 WO 2022223726A1 EP 2022060612 W EP2022060612 W EP 2022060612W WO 2022223726 A1 WO2022223726 A1 WO 2022223726A1
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- Prior art keywords
- diffuser layer
- layer
- optoelectronic components
- emission direction
- main emission
- Prior art date
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V23/00—Arrangement of electric circuit elements in or on lighting devices
- F21V23/04—Arrangement of electric circuit elements in or on lighting devices the elements being switches
- F21V23/0442—Arrangement of electric circuit elements in or on lighting devices the elements being switches activated by means of a sensor, e.g. motion or photodetectors
- F21V23/0485—Arrangement of electric circuit elements in or on lighting devices the elements being switches activated by means of a sensor, e.g. motion or photodetectors the sensor sensing the physical interaction between a user and certain areas located on the lighting device, e.g. a touch sensor
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L25/00—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof
- H01L25/03—Assemblies 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 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes
- H01L25/04—Assemblies 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 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes the devices not having separate containers
- H01L25/075—Assemblies 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 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes the devices not having separate containers the devices being of a type provided for in group H01L33/00
- H01L25/0753—Assemblies 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 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes the devices not having separate containers the devices being of a type provided for in group H01L33/00 the devices being arranged next to each other
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V11/00—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00
- F21V11/08—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00 using diaphragms containing one or more apertures
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V3/00—Globes; Bowls; Cover glasses
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F13/00—Illuminated signs; Luminous advertising
- G09F13/04—Signs, boards or panels, illuminated from behind the insignia
- G09F13/0418—Constructional details
- G09F13/0427—Constructional details in the form of buttons
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L25/00—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof
- H01L25/16—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof the devices being of types provided for in two or more different main groups of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. forming hybrid circuits
- H01L25/167—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof the devices being of types provided for in two or more different main groups of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. forming hybrid circuits comprising optoelectronic devices, e.g. LED, photodiodes
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F13/00—Illuminated signs; Luminous advertising
- G09F13/20—Illuminated signs; Luminous advertising with luminescent surfaces or parts
- G09F13/22—Illuminated signs; Luminous advertising with luminescent surfaces or parts electroluminescent
- G09F2013/222—Illuminated signs; Luminous advertising with luminescent surfaces or parts electroluminescent with LEDs
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2933/00—Details relating to devices covered by the group H01L33/00 but not provided for in its subgroups
- H01L2933/0091—Scattering means in or on the semiconductor body or semiconductor body package
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L33/48—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
- H01L33/50—Wavelength conversion elements
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L33/48—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
- H01L33/58—Optical field-shaping elements
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L33/48—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
- H01L33/62—Arrangements for conducting electric current to or from the semiconductor body, e.g. lead-frames, wire-bonds or solder balls
Definitions
- the present invention relates to an operating element and an operating element panel.
- the invention also relates to a method for producing such a control element.
- m-LEDs optoelectronic components which are characterized by a very small edge length in the range from a few ⁇ m to about 100 ⁇ m are referred to as m-LEDs.
- TFT backplane & control electronics active control required
- they are usually designed in a rectangular shape and thus clearly limited their possible uses.
- the inventors have recognized that although display and control elements are used in many areas, they are mostly used are designed simply and clearly. With a simple push of a button, these can be switched on or off with their respective function, with a light element providing a visual indication of the respective status at the same time. Applications for such operating elements can be found, inter alia, in the automotive sector, in which vehicle functions, for example the interior lighting or the like, can be switched on or off simply by pressing a button. This also includes illuminated controllers with which control is possible and which in turn are identified by light signals. An example would be dimmers in the smart home sector or, again, in the automotive sector. Other control elements of this type can be found in automation and industrial technology, in aircraft construction and also in home appliances.
- each pixel of a display is "equipped" with a pLED, the majority of the LED chips are not operated in a simple display element. However, the application-side required homogeneous illumination of the display symbol should be guaranteed, with the number of LEDs Furthermore, it may be necessary, for example in the automotive sector or in aircraft construction, for the integration of the display and operating element according to the invention to remain at least partially or predominantly transparent.
- an operating element comprises a carrier element and a light-emitting film in which or on which at least two optoelectronic components and contact lines connected to them are arranged.
- the at least two optoelectronic components generate light along a first main emission direction.
- a diffuser layer is arranged downstream of the at least two optoelectronic components with respect to the first main emission direction.
- "subordinate" with regard to the first main emission direction means that an element follows another element when moving along the main emission direction. Light that is emitted by the component along the main emission direction therefore hits the other element first
- a symbol element is provided, which is not arranged in front of the diffuser layer with respect to the first main emission direction.
- the symbol element is thus either arranged downstream of the diffuser layer with regard to the first main emission direction or is formed in the diffuser layer itself drive of the at least two optoelectronic components and a plan view of the diffuser layer along the first main emission direction or opposite thereto at least one symbol.
- a structured symbol element is to be understood as an element which for e represents one or more symbols to a user.
- a structured symbol element may comprise one or more letters, each letter forming a symbol of the structured symbol element.
- the structured symbol element can also include one or more characters, pictograms or icons or a combination of such with letters.
- the operating element comprises a touch-sensitive sensor which is designed to detect a touch or pressure exerted along or opposite to the first main emission direction and to generate an electrical signal therefrom.
- the distance between the diffuser layer and the at least two optoelectronic components depends on a distance between the at least two optoelectronic components.
- the optoelectronic components can be arranged in a matrix form, or also follow the shape of the symbol element, i.e. the optoelectronic components show an arrangement among themselves in plan view that is similar to the symbol to be illuminated.
- the operating element is formed in a flexible structure, which allows it to be easily integrated into existing support surfaces, if this is necessary.
- the structured symbol element is formed by a shadow mask arranged on the diffuser layer with respect to the first main emission direction. This makes it possible to create a wide variety of operating elements in a very simple manner by adjusting the shadow mask.
- the distance between the diffuser layer and the at least two optoelectronic components can also be greater than half the distance between the at least two optoelectronic components. This dependence between the distance between the optoelectronic components and the The homogeneity of the illumination can be adjusted using the diffuser layer and the distance between two adjacent optoelectronic components (pixel pitch). The specified dependency creates an overlap in the light cone and thus improves the illumination.
- the structured symbol element is formed by the diffuser layer, among other things by a structure in the diffuser layer, in particular by a spatial distribution of diffuser particles in the diffuser layer that forms the structure. Similar to the previous example, provision can also be made here for the distance between the diffuser layer and two adjacently arranged optoelectronic components, which are assigned to the at least one symbol, to be less than half the distance between the two adjacent optoelectronic components. In other words, the pixel pitch or the distance from the diffuser layer is selected in such a way that a sufficiently large overlap is created and the associated symbol is thus evenly illuminated.
- a symbol contains a number of sub-symbols that are to be spaced apart from one another. It is therefore necessary that the sub-symbols can be well resolved.
- the resolution results from the distance between two adjacent optoelectronic components, one of which is assigned to one partial symbol and the other to the other partial symbol. In some aspects, therefore, a distance between the diffuser layer and two adjacently arranged optoelectronic components, which are assigned to different symbols or partial symbols, is less than half the distance between the two adjacent optoelectronic components.
- the necessary distance between the optoelectronic components and the diffuser layer is created by an adhesive layer that connects the luminescent film to the diffuser layer.
- Their thickness essentially corresponds to the required distance between the diffuser layer and the at least two optoelectronic components.
- a reflective or absorbing element is applied to a side facing away from the first main emission direction.
- this can be an absorbent color layer that is provided on the carrier element or the luminescent film.
- An absorbing layer of color prevents wave conduction of the emitted light, which is totally reflected at the boundary surface with the air and is deflected back into the operating element.
- the elements located there can also be formed with absorber particles on a side facing away from the first main emission direction, in order to prevent reflected light from conducting waves. It would be possible to provide these absorber particles in the carrier element, in an adhesive layer between the carrier element and the luminescent film or in the luminescent film itself.
- the diffuser layer can include an electrochromic layer. This allows the symbol to be darkened or additional color nuances to be set.
- additional layers can be provided which implement further functionalities for the operating element.
- an adhesive layer can be arranged between the carrier element and the light-emitting film.
- the adhesive layer can be a hot-melt adhesive, the thickness of which is only a few 10 ⁇ m.
- the control element can comprise a cover film layer which is arranged downstream of the diffuser layer with respect to the first main emission direction. The cover film layer serves to protect the diffuser layer and can also Adapt the refractive index to the further medium in order to reduce the total reflection.
- control element can have an optionally partially transparent color layer, which is arranged downstream of the diffuser layer with respect to the first main emission direction.
- the color layer may optionally be structured and in particular structured similarly to the structured symbol element.
- the additional layer of color improves the impression of the symbol.
- further color impressions can be generated, which provide a user with additional information.
- converter layers can be provided, which convert the light of a first wavelength generated by the optoelectronic components into a second wavelength.
- these layers are arranged downstream of the diffuser layer, i.e. the emitted light is first homogenized by the diffuser layer and then in converted to a second wavelength.
- the diffuser layer of the operating element comprises converter particles for converting incident light of a first wavelength into light of a second wavelength.
- a color filter can be provided in some aspects, which is arranged downstream of the diffuser layer with respect to the main emission direction, with the color filter being unstructured in particular.
- the color filter for example, a broader emission spectrum can be narrowed down so that a specific color can be selected from a number of possible ones.
- the color filter is adjustable in some aspects.
- some versions relate to a control element in which the at least two optoelectronic components for generating Light of different wavelengths are performed.
- components are used that produce different colors, so that not only mixed colors can be produced, but also the operating element can light up in different colors depending on the activation, eg red or green.
- components of different colors can be arranged close to one another on or in the luminescent film, so that the requirements for homogeneity and also resolution, as mentioned above, remain guaranteed.
- Several light foils with components of different colors can also be arranged one on top of the other in order to create the desired effect.
- control element comprises a glass layer as a carrier element.
- the carrier element can also have a carrier film that is applied to a glass layer. Any rigid transparent layer is understood here as a glass layer.
- this SiO2 can also include a solid and transparent plastic such as Plexiglas or the like.
- support elements are provided whose thickness is in the range from a few 10 ⁇ m to approximately 200 ⁇ m.
- Such carrier layers possibly also made with SiO 2 or other glasses or transparent plastics, are designed to be flexible and pliable.
- such thin glass layers are provided, the thickness of which is between 50 ⁇ m and 200 ⁇ m but still have the barrier effect of thick glass.
- the tactile sensor is positioned between the light-emitting sheet and the diffuser layer.
- the touch-sensitive sensor can also be arranged after the diffuser layer with respect to the first main emission direction.
- the touch-sensitive sensor is arranged between the carrier element and the luminous foil.
- the touch-sensitive sensor can be capacitive or resistive sensor.
- the extent may correspond to at least one extent of the structured symbol element. It is therefore possible that the expansion of the sensor corresponds to the size of the operating element, but the sensor can also be smaller.
- the at least two optoelectronic components can be designed as horizontal light-emitting diodes, each with two contact pads on the same side.
- the contact pads are connected to terminals of the contact lines. This is expedient because in this way the emission side is free of contact pads or other shadows. If necessary, light is emitted away from the luminescent film on which the components are arranged.
- another solution is also conceivable, in which the components shine through the light-emitting foil, so they would be arranged on the "underside" of the foil.
- the at least two optoelectronic components can also be designed as vertical light-emitting diodes, with one of the contact lines is in each case guided along an insulated side of the optoelectronic components onto a contact pad which is on a light exit side of the optoelectronic component.
- the two optoelectronic components are surrounded by a transparent material in the main emission direction.
- the material can contain air or be another gas, whereby in such a case the optoelectronic components are embedded in a cavity.
- the surrounding material has a refractive index that is lower than a material of the diffuser layer or an adhesive layer covering the transparent material.This reduces the emission properties improved.
- control element thus includes a second main emission direction, which is oriented essentially opposite to the first main emission direction.
- control element has a second diffuser layer, which is arranged downstream of the at least two optoelectronic components with respect to the second main emission direction.
- the two optoelectronic components are arranged between two diffuser layers.
- the operating element comprises a structured second symbol element which is not arranged in front of the second diffuser layer with respect to the second main emission direction and which is designed to display at least one symbol during operation of the at least two optoelectronic components and a plan view of the second diffuser layer along the main emission direction .
- This aspect thus creates a control element that is illuminated on both sides and can be operated. It can be expedient to possibly arrange the least two optoelectronic components on different sides of the luminescent film. As a result, both sides can be illuminated separately if the light-emitting film is designed to be reflective or absorbing.
- the structured second symbol element is formed by a second shadow mask arranged downstream or on the second diffuser layer with respect to the second main emission direction.
- the distance between the second diffuser layer and the at least two optoelectronic components is greater than half the distance between the at least two optoelectronic components.
- the structured second symbol element can also be formed by the diffuser layer. In such an embodiment it is thus possible to provide different types of symbols, so that the control element shows different symbols depending on the viewing direction.
- the operating element comprises a second touch-sensitive sensor which is designed to detect a touch or pressure exerted along the second main emission direction and to generate an electrical signal therefrom.
- the control element can be operated from both sides.
- the first and/or second touch-sensitive sensor is arranged between two carrier elements and with respect to the main emission direction of the respective diffuser layer below.
- the second sensor can also be a capacitive sensor, in which case the strength of a signal change can be used to distinguish which of the two sensors should respond.
- the control element can be used on both sides and it is still possible to distinguish which sensor was activated by touching or touching the control element.
- control element comprises a haptic button element, which is arranged downstream of the respective diffuser layer with respect to the first and/or second main emission direction.
- the user is guided to the control element with the haptic key element.
- the haptic button element can have a curvature on its surface.
- the haptic key element is applied to a carrier foil or a glass layer, which is arranged downstream of the respective diffuser layer with respect to the first and/or second main emission direction. Another point of view is provided with a control panel, in particular for a vehicle, an aircraft, or an automation or industrial application.
- the control element panel includes a glass element, in particular a pane or a panel and the control element according to the proposed principle.
- the operating element is arranged on the glass element in such a way that the glass element forms the carrier element of the operating element, or the carrier element is intimately connected to the glass element.
- the control element thus becomes part of the pane or glass element.
- This allows multiple controls to be provided on panes, glass surfaces, or generally smooth surfaces. In the case of glass surfaces in particular, the transparency can be retained as far as possible, which means that there is only insignificant shading with improved functionality at the same time.
- a further aspect relates to a method for producing an operating element. In such a method, a carrier element and a luminescent film are provided.
- At least two optoelectronic components and contact lines connected to them are arranged in or on the luminous film.
- the at least two optoelectronic components in operation are designed to generate light along a first main emission direction.
- a luminous foil is arranged on the carrier element.
- a diffuser layer is also applied to the light-emitting foil, so that light emitted by the at least two optoelectronic components during operation radiates through the diffuser layer along the first main emission direction.
- a distance between the diffuser layer and the at least two optoelectronic components is set such that it depends on a distance between the at least two optoelectronic components.
- a structured symbol element is provided and is not arranged in front of the diffuser layer with respect to the first main emission direction.
- the structured Sym bolelement is formed in an operation of at least two To map optoelectronic components and a top view of the diffuser layer along the first main emission direction at least one symbol.
- the method according to the proposed principle includes arranging a touch-sensitive sensor which is designed to detect a touch or pressure exerted along or opposite to the first main emission direction and to generate an electrical signal therefrom.
- the diffuser layer is applied to and attached to the luminescent sheet by an adhesive layer.
- the thickness of the adhesive layer is selected such that the distance between the diffuser layer and two adjacent optoelectronic components that are associated with the symbol is greater than half the distance between the at least two optoelectronic components.
- the distance between the diffuser layer and two adjacently arranged optoelectronic components, which are assigned to different symbols, is less than half the distance between the two adjacent optoelectronic components.
- the structured symbol element can be formed by a shadow mask arranged on the diffuser layer with respect to the first main emission direction.
- the structured symbol element can also be formed by the diffuser layer itself.
- this can be an absorbent color layer on the carrier element or the luminous film.
- the carrier element or the light-emitting foil can also be mounted on the first main be formed with absorber particles on the side facing away from the direction of the beam. This avoids a wave conduction of radiated light in the operating element or along the boundary layers to an external medium.
- the luminescent film can be connected to the carrier element by an adhesive layer. It is also possible to provide a cover film to protect against damage or to adjust the refractive index.
- the cover film layer is arranged downstream of the diffuser layer with respect to the main emission direction.
- An optionally partially transparent color layer can also be applied, which is arranged downstream of the diffuser layer with respect to the main emission direction, the color layer being optionally structured and in particular structured similarly to the structured symbol element. All of these measures can improve a user's visual impression.
- the tactile sensor may be positioned between the light emitting sheet and the diffuser layer. It is also possible to arrange the touch-sensitive sensor after the diffuser layer with respect to the first main emission direction. In an alternative embodiment, the touch-sensitive sensor is arranged between the carrier element and the light-emitting foil. Another aspect is the possibility of emitting light in two opposite directions and creating a control element that can be seen and operated from two sides. For this purpose, some aspects of the method provide for one of the at least two optoelectronic components to be designed to emit light in a second main emission direction, which is oriented essentially opposite to the first main emission direction.
- the method now also includes arranging a second diffuser layer, which is arranged downstream of the at least two optoelectronic components with respect to the second main emission direction. Furthermore, a structured second symbol element that is not arranged in front of the second diffuser layer with respect to the second main emission direction. This serves to image at least one symbol during operation of at least one of the at least two optoelectronic components and a plan view of the second diffuser layer along the main emission direction.
- the structured second symbol element is formed by a second shadow mask arranged on the second diffuser layer with respect to the second main emission direction. The distance between the second diffuser layer and the at least two optoelectronic components is greater than half the distance between the at least two optoelectronic components.
- the structured second symbol element can be formed by the diffuser layer, in particular by a spatially inhomogeneous distribution of diffuser particles.
- a second touch-sensitive sensor can be arranged, which is designed to detect a touch or pressure exerted along the second main radiation direction and to generate an electrical signal therefrom;
- the first and/or second touch-sensitive sensor can be arranged between two carrier elements and following the respective diffuser layer with respect to the main emission direction.
- a haptic button element can be arranged in such a way that it is arranged downstream of the respective diffuser layer with respect to the first and/or second main emission direction.
- FIG. 1 shows a first embodiment of a control element with some aspects according to the proposed principle
- FIGS. 2A and 2B show various aspects of the proposed principle, here the depiction of a shadow mask and the distance between the optoelectronic components and the diffuser layer;
- Fig. 3 explains various configurations of optoelectronic components arranged on a layer for producing the luminescent film according to some aspects of the proposed principle
- FIG. 4 shows a second embodiment of an operating element with some aspects according to the proposed principle
- FIGS. 5A and 5B represent various aspects of the proposed principle, here the representation of a shadow mask and the spacing relationship between the optoelectronic components and the diffuser layer;
- FIG. 6 shows a third embodiment of an operating element with some aspects according to the proposed principle
- FIG. 7 shows a fourth embodiment of an operating element with some aspects according to the proposed principle
- FIGS. 8A and 8B represent a fifth and sixth embodiment of an operating element with some aspects according to the proposed principle
- FIGS. 9A and 9B show a seventh and eighth embodiment of a control element to explain some aspects of the proposed principle before;
- FIGS. 10A and 10B are representations of a ninth and tenth embodiment of a control element with some aspects according to the proposed principle;
- FIGS. 11A and 11B show a second and twelfth embodiment of a control element to explain some aspects of the proposed principle;
- FIGS. 12A and 12B represent a 13th and 14th embodiment of an operating element with some aspects according to the proposed principle
- FIGS. 13A and 13B are representations of a 15th and 16th embodiment of a control element with some aspects according to the proposed principle
- FIGS. 14A and 14B show a 17th and 18th embodiment of an operating element with some aspects according to the proposed principle
- FIGS. 15A and 15B show configurations of a control element with some aspects according to the proposed principle, in which light is emitted in two opposite directions;
- FIGS. 16A and 16B represent a 20th and 21st embodiment of a control element with some aspects according to the proposed principle
- FIG. 17 shows a further embodiment of an operating element with some aspects according to the proposed principle
- FIG. 18 shows an embodiment of an operating element in different operating states to explain some aspects of the proposed principle
- Figure 19 is an embodiment of a control panel with some aspects according to the proposed principle
- FIG. 20 is an illustration of an example of a method for producing an operating element with some aspects of the proposed principle
- FIG. 21 shows another example of a method for explaining some aspects.
- the inventors have set themselves the goal of realizing inexpensive and partially transparent and filigree display elements, so that they can also be used on transparent surfaces without the disadvantages listed above.
- the disadvantages that occur with so-called transparent displays should be avoided. These include the complex actuation using a TFT pipeline or control electronics and often the optoelectronic components that are superfluous depending on the display and control elements and are therefore not required. Nevertheless, due to the various possible applications mentioned above, it is necessary to to keep the service element flexible so that it can be applied not only to smooth and straight transparent surfaces, but also to curved surfaces, for example.
- the inventors therefore propose, among other things, an embodiment of an optical display and control element according to FIG. 1 as a solution.
- the embodiment of FIG. 1 includes a carrier film 10 which is flexible and made, for example, from a plastic such as PET, PP, PE or another material. the plastic can be made transparent.
- a touch-sensitive sensor 60 is applied to the carrier foil 10 .
- the sensor 60 extends over the entire lateral extent of the optical display and control element and includes a capacitively reacting sensor element together with its supply and control lines.
- the touch-sensitive sensor 60 can be made significantly thinner than the carrier film, as shown, so that the stability is essentially achieved by the carrier film 10 .
- An adhesive layer 75 is now applied to the touch-sensitive sensor, which connects the touch-sensitive sensor on the carrier film 10 to a light-emitting film 20 .
- the light foil 20 includes one or more optoelectronic components 25 together with their control and supply lines. The control and supply lines are omitted here for the sake of clarity.
- the optoelectronic components 25 are arranged on the surface of the luminescent film 20 and in particular on the side of the luminescent film 20 facing away from the adhesive layer 75 .
- These optoelectronic components can also be provided in the luminescent film 20, so that the luminescent film 20 surrounds the optoelectronic components 25.
- the optoelectronic components 25 in or on the light foil 20 have a main emission direction 28 .
- the main emission direction is defined by the direction of the light emitted by the optoelectronic components during operation.
- the luminous foil 20 is connected to a diffuser layer 40 by means of an adhesive layer 70 .
- Diffuser layer 40 contains diffuser particles that scatter the light emitted by the optoelectronic components 25 and thus distribute it homogeneously.
- a structured mask 50 is applied to the diffuser layer 40 as a symbol element, over which a protective film 90 is in turn arranged.
- a further structured color layer 80 can optionally be arranged on the protective film 90 .
- PET or another transparent plastic described in this application is used as the material for the individual film layers.
- PVB or EVA can also be used as the material for the adhesive layer.
- the optoelectronic components 25 During operation of the present control element, the optoelectronic components 25 generate light and emit it along the main emission direction 28 in the direction of the diffuser layer 40 .
- the emitted light is distributed as uniformly as possible in the diffuser layer 40 and then falls on the shadow mask 50, so that a user sees one or more symbols when looking in the direction of the optoelectronic components.
- the mask 50 includes an absorbing color layer so that the light outside the recessed area is absorbed.
- the different materials can also lead to a total reflection within the layer sequence, so that the light is reflected back and, in particular, emitted in the direction of the carrier film 10 .
- an absorbing color layer 11 is applied to the rear surface of the carrier film 10 .
- Figures 2A and 2B show some other aspects of the proposed principle, in particular to explain the corresponding dimensioning.
- the display and control elements have a dimension of approximately 15 ⁇ 15 mm.
- the mask 50 therefore has approximately the same dimensions and, as shown here, shows a character string ABC, which is formed by gaps in the shadow mask.
- the diffuser layer 40 is designed to be somewhat smaller and is arranged centrally below the shadow mask 50 . In particular, the diffuser layer 40 thus lies over the exposed areas of the shadow mask and the symbols A, B and C shown.
- a pixel matrix of 3 ⁇ 3 optoelectronic components 25 is now provided as part of the luminous film 20 for the most homogeneous possible illumination.
- this pixel matrix generates light of a predetermined wavelength, which falls homogeneously through the diffuser layer 40 and onto the shadow mask from below.
- a uniformly illuminated symbol sequence ABC thus appears for a user.
- same colored components 25 are used.
- To generate different colors it is also possible to use components under different colors. These can, for example, illuminate different symbols.
- FIG. 2B shows some aspects with regard to the dimensioning of the display and control element according to the proposed principle. Two adjacent optoelectronic components are shown, which are at a distance from one another, which is also referred to as the pixel pitch.
- the light emitted by the optoelectronic components it is advantageous for the light emitted by the optoelectronic components to overlap before it falls on the diffuser layer 40.
- the distance between the optoelectronic components 25 prefferably has a specific dependence on the pixel pitch at a predetermined opening angle of, for example, 45°.
- the two light cones emitted by the optoelectronic components overlap along the main emission direction 28 when the distance between the electronic components 25 and the diffuser layer is approximately half the pixel pitch x. If the distance between the optoelectronic components 25 and the diffuser layer 40 is greater, the overlapping of the respective light cones along the main beam direction 28 also increases and the homogenization by the diffuser layer 40 is improved.
- the thickness of the adhesive layer 70 is designed accordingly.
- the distance between the optoelectronic African components on the surface of the luminous film 20 is thus essentially determined by the thickness of the adhesive layer 70 be. If the diffuser layer 40 is thicker, an overlap can also occur within the diffuser layer, so that the homogenization remains guaranteed.
- FIG. 3 shows various design options for arranging optoelectronic components 25 on or in the light-emitting film.
- Subfigure 3A shows the arrangement of an optoelectronic component 25 as a horizontal light-emitting diode on the light-emitting film.
- the light-emitting film 20 comprises a plurality of supply lines 26 and 26' which lead to contact pads or connections 27 and 27'.
- the optoelectronic component 25 is designed as a horizontal light-emitting diode, so that the two contact pads 27, 27' are arranged on a side of the optoelectronic component 25 that is opposite the main emission direction.
- the optoelectronic component 25 is arranged with its two contacts 27 and 27' on the connections of the light-emitting film and intimately connected to them by means of solder or other methods.
- the optoelectronic component 25 lies directly on the light-emitting film 20 and can subsequently be surrounded by a transparent material, for example the adhesive layer 70 .
- FIG. 3B shows an embodiment in which the optoelectronic component 25 is integrated into the luminous film.
- the luminescent film 20 comprises a first partial layer 20', on which the supply lines 26 and 26' are arranged on one side.
- the light-emitting side of the optoelectronic component is now applied to the partial layer 20'.
- the connections 26 and 26' are guided to the underside of the optoelectronic component 25 by means of a solder or another metallic contact.
- the two contact lines close on at least two sides the component at least partially and contact the connection pads 27 and 27′ on the side of the optoelectronic component opposite the partial layer 20′.
- a second partial layer 20'' is then applied, which encapsulates and completely surrounds the optoelectronic component.
- the two partial layers 20 ′ and 20 ′′ thus completely embed the optoelectronic component 25 in the light-emitting film 20 .
- partial figure 3C shows an embodiment with an optoelectronic component as a vertical light-emitting diode.
- the contact pads 27 and 27' are arranged on opposite sides and surfaces of the building element 25, in contrast to the horizontal light-emitting diodes, as in sub-figures 3A and 3B.
- the optoelectronic component 25 has its contact pad 27 connected to a connection. Contact pad 27 thus contacts the supply lines 26 on the light-emitting film 20.
- Another connection line 26' is routed via an externally arranged supply line to the top and thus the light-emitting side of the optoelectronic component 25 and to the contact pad 27'.
- the feed 26' on the upper side of the optoelectronic construction element is designed to be transparent. ITO or other suitable materials can be used for this purpose, for example.
- insulation 270 is also arranged on the side wall on which the feed line runs. This prevents a short circuit between the supply line 26 and, for example, the further contact pad 27 or the individual semiconductor layers of the optoelectronic component.
- FIG. 4 shows a corresponding embodiment for explaining this principle. Structures with the same function or effect carry the same reference symbols.
- the display and control element of FIG. 4 again comprises a flexible carrier foil 10 with a touch-sensitive sensor 60 arranged thereon, which is attached to the luminous foil 20 by means of an adhesive layer 75 .
- a multiplicity of optoelectronic components 25 with their respective supply lines are arranged in or on the luminous film 20 .
- the luminous film 20 is connected to the structured diffuser layer 51 via a further adhesive layer 70 .
- a cover layer 90 is applied to the structured diffuser layer 51 .
- the diffuser layer is structured by means of a spatially inhomogeneous distribution of diffuser particles within the diffuser layer.
- absorber particles can also be arranged in the diffuser layer, which in turn are distributed inhomogeneously, so that the desired symbol results for a user as negative due to the absorption of light. The symbols would glow here, the absorber particles absorb light outside the symbols.
- the further cover layer 80 is used to adapt the different refractive indices to the surrounding medium and in particular to air, so that total reflection back into the various layers of the display and control element is avoided or reduced.
- Partial figures 5A and 5B show aspects of the optical display and control element on the transparent surface to explain the principle.
- the symbols are also generated here by the structured diffuser 51 in the form of a character string ABC.
- the best possible homogenization of each individual symbol A, B and C should be achieved.
- the luminous film 20 comprises a multiplicity of individual, optoelectronic components, which in turn roughly simulate the individual symbols. This aspect alone creates advantages since, in contrast to a normal matrix in rows and columns, the optoelectronic components already approximately simulate the symbols to be displayed later.
- Neighboring components which are thus assigned to the same symbol, for example symbol A, should therefore be at a distance from one another that causes the light distribution to be as homogeneous as possible.
- the distance between the components and the diffuser layer can be selected by the pixel pitch x, as has already been explained in FIG. 2B. Such a distance allows an overlap of light from the optoelectronic components assigned to the same symbol in each case and thus generates a homogeneous light distribution for this symbol.
- FIG. 5B shows the second case, in which two adjacent optoelectronic components 25 are associated with different symbols, for example symbols A and B.
- the distance between the two optoelectronic components x′ should be selected such that there is precisely no overlap, since otherwise a user may no longer be able to resolve or distinguish between the two symbols in the structured diffuser layer 51 .
- the pixel pitch x' between the two adjacent optoelectronic components 25, which are assigned to different symbols is larger than approximately half of the area 51' or 51'' to be illuminated of the respective symbol.
- the distance between the structured diffuser layer 51' or 51'' to the optoelectronic components is smaller than that Half of the pixel pitch x 'of the two adjacent optoelectronic components' rule 25.
- the additional existing cover layer 90 serves on the one hand to protect the underlying diffuser layer 51 or the shadow mask 50 and can also take over the functionality of an adjustment of the refractive index to the surrounding medium. This reduces the probability of a total reflection of emitted light back into the display and control element.
- the thickness dimensions shown in FIGS. 1 and 4 are to be understood as examples and can vary depending on the application.
- the adhesive layer 75 can also be made thinner and thus further reduce the thickness of the entire component. This makes it possible, please include components to be arranged between different layers of glass and thus to be integrated into a pane or the like.
- Figure 6 shows such an embodiment.
- a first glass layer 100 simultaneously forms the carrier element 10 for the visual display and control element.
- An adhesive layer 75 is applied to the glass layer 100 and connects the glass layer to the luminous film 20 .
- Several components 25 are integrated in the light-emitting film 20 and during operation generate light along the main emission direction 28. This light is coupled via a hot-melt adhesive layer 70 into a structured diffuser layer 51 and generates one or more symbols there when a user looks at the optical display element from above.
- the structured diffuser layer 51 is designed here with absorber particles that absorb the light emitted by the optoelectronic components 25 .
- the absorber particles in the Diffuser layer 51 thus form a negative for the symbols to be displayed.
- a transparent touch-sensitive sensor element 60 is arranged above the structured diffuser layer 51 and is protected by a cover layer 90 .
- a glass pane 101 is in turn applied to the cover layer 90 and is intimately connected to it.
- a second aspect relates to the arrangement of absorber particles in the structured diffuser layer 51, which acts as a negative and is designed similarly to the shadow mask.
- the spatial distribution of the absorber particles is inhomogeneous, so that different symbols can be implemented.
- the carrier element is designed here directly as a glass layer 100, so that the overall thickness of the optical display and control element is reduced.
- FIG. 7 shows a further embodiment which is similar to the embodiment of FIG.
- a shadow mask 50 is applied directly to the diffuser layer 40, which is unstructured per se.
- the shadow mask is covered by a glass layer 101, which is the shadow mask 50 and the underlying diffuser structure 40 protects.
- the touch-sensitive sensor is arranged between the adhesive layer 70 and the diffuser layer 40 .
- the operating element shown in FIG. 7 is thus introduced and fixed between the two glass layers 100 and 101 .
- the display and operating element can thus be arranged between the two individual panes according to the proposed principle.
- the display and control element can be used as part of a connection structure between the two individual panes to form a complete windshield or panorama pane.
- the display and control element according to the proposed principle can always be provided between these in the connection layer in the case of composite panes.
- FIGS. 8A and 8B show further aspects of the proposed principle.
- the touch-sensitive sensor 60 is applied directly to the glass pane 100 as a carrier element and then the luminous film 20 is arranged directly thereon.
- An adhesive layer 70 is applied between the luminescent film 20 with the optoelectronic components 25 located thereon and connects the luminescent film 20 to the structured diffuser layer 51 .
- the cover film layer 90 is glued to the diffuser layer 51 .
- Figure 8B shows a similar embodiment.
- an absorbent color layer 11 is applied to the carrier element 100 .
- the touch-sensitive sensor 60 is in turn arranged on this.
- FIGS. 9A and 9B Partial figure 9A shows a display and operating element which is inserted between two glass panes 100 and 101.
- the display and control element comprises a flexible carrier film 10 with a touch-sensitive sensor 60 applied thereto, an adhesive layer 75 and a luminescent film 20 arranged thereon and connected thereto. As shown, the components are only surrounded by a further medium 71 which has a lower refractive index than the adhesive layer 70 .
- the shape of the further medium or material 71 can be designed to taper off in the edge region of the optoelectronic components, with the medium 71 likewise running parallel in particular along or parallel to the light-emitting surface of the optoelectronic components.
- the device may be placed in a recess or recess in layer 70.
- FIG. In embodiments in which the components 25 are implemented within the luminescent film, they can be arranged within a recess in the luminescent film 20 .
- the luminescent film 20 as in one of the preceding examples with a plurality of layers, with the optoelectronic components each being arranged in a recess within one of these partial layers.
- each component can be arranged in a separate recess, or else several components can be arranged in a common recess.
- the cutout is larger than the optoelectronic component or components themselves, so that there is an intermediate space between the light-emitting surface and a subsequent material layer.
- This space is filled with gas, which has a lower refractive index than the surrounding material. through the surrounding medium with the low refractive index, a total reflection of emitted light is reduced and at the same time guidance along the desired main emission direction into the adhesive layer 70 or layers above it is improved.
- the adhesive layer 70 also connects the luminescent film 20 to the structured diffuser layer 51 to generate one or more symbols.
- FIG. 9B shows a slightly different embodiment in which the corresponding symbols are conveyed to a user not by structuring the diffuser layer 51 but by means of a shadow mask 50 applied to the unstructured diffuser layer 40 .
- a cover film layer 90 with a color layer 80 incorporated therein is in turn formed over the shadow mask 50 .
- absorber particles 12 are also incorporated into the carrier film layer 10 .
- the absorber particles can also be located in the film layer 20 below, d. H. counter to the main beam direction of the optoelectronic components 50 to be incorporated.
- both an absorbing color layer and absorber particles can be incorporated at different points on the side of the display and control element opposite the main emission direction 28 .
- Various embodiments and configurations of such a color layer or of absorber particles are therefore conceivable.
- the partial figures 10A and 10B show a further embodiment of a display and control element according to the proposed principle, in which a color filter 95 is also placed over the unstructured diffuser layer 40 or the structured diffuser layer. Layer 51 is arranged.
- the color filter 95 serves to manipulate the emission spectrum of light emitted by the optoelectronic components 25 arranged below the color layer 95 . If they emit a very broadband emission spectrum , the color filter 95 allows a specific part of the emission spectrum to be selected.
- the color filter 95 can also be embodied as an electrochromic filter 95, so that on the one hand the emission spectrum can be adjusted and on the other hand the shape of the symbols can also be suitably adjusted by the shadow mask 50.
- the color filter 95 is in
- Partial figure 10A is arranged between the diffuser layer 40 and the shadow mask 50.
- the color filter 95 is applied to the structured diffuser layer 51 in FIG. 10B.
- the color filter 95 can also be implemented in this connection between the structured diffuser layer 51 and the adhesive layer 70, a spatial light intensity is lower because of the diffuser particles within the structured diffuser layer 51.
- the color filter 95 in the form shown in FIG. 10B can be made somewhat thinner than would be the case, for example, with a color filter between the diffuser layer and the adhesive layer 70 .
- the tastsensi tive sensor 60 is applied to the carrier element 10, ie the carrier film. It is therefore located behind the main emission direction of the respective optoelectronic components.
- FIG. 11A and 11B FIG.
- FIG. 11 shows two further embodiments of a display and control element, in which the diffuser layer 40 is additionally formed with converter particles.
- the converter particles are accommodated in the diffuser layer 40 and are used to convert the light emitted by the optoelectronic components 25 into a first wavelength into a second wavelength.
- the optoelectronic components 25 generate a blue light during operation, which is converted into yellow light by the converter particles in the diffuser layer 40'.
- the resulting mixed light has the color white and is mapped into a corresponding symbol for the viewer via the shadow mask 50 .
- Partial figure 11B shows a similar embodiment in which the diffuser layer 51' is both structured and filled with converter particles.
- the converter particles are also spatially distributed inhomogeneously, so that light conversion takes place primarily in areas of the symbol to be displayed.
- the symbol is generated by a structure of a different color.
- the individual symbols can glow white, while the surrounding areas shine with the blue light emitted by the optoelectronic components.
- the display and control element it is also possible for the display and control element to be illuminated in essentially white, with the symbols being presented to a user by unconverted blue light.
- FIG. 12 shows a further embodiment in which the position of the touch-sensitive sensor 60 can be adjusted with respect to a color filter layer 95 or a converter layer 40'.
- the two partial figures thus form combinations of features of the previous embodiments, in which the touch-sensitive sensor 60 is arranged at different positions within the display and control element.
- the touch-sensitive sensor 60 is applied between the adhesive layer 70 and the diffuser layer 40 in partial figure 12A.
- the color filter 95 is arranged above the diffuser layer.
- a transparent glass layer 100 is provided in partial figure 12A, on which the display and control element is applied with its adhesive layer 75.
- Another glass layer 101 lies over the cover film layer 90, so that the individual layers of the display and control element are embedded between the two glass layers.
- the sensitive sensor 60 is arranged downstream of the converter and diffuser layer 40' with respect to the main emission direction, ie it is located between the converter layer 40' and a cover film layer 90.
- a glass layer 100 is also provided in partial figure 12B, on which the adhesive layer 75 is applied with absorber particles to prevent light wave conduction.
- the individual embodiments, in particular the different layers can be combined in different ways.
- the capacitively or resistively operating touch-sensitive sensor 60 can be provided at different positions within the display and control element.
- the sensor 60 can also be designed to be transparent so that on the one hand it does not prevent a user from seeing through the glass panes and on the other hand light from the optoelectronic components 25 can easily pass through the sensor.
- FIGS. 13 and 14 show further embodiments in their respective sub-figures A and B, a haptic button element 110 being additionally provided.
- the haptic button element 110 is designed differently and is used to give a user a haptic indication in addition to a visual indication. As a result, a user can also use the haptic indication alone to detect the display and control element and activate the sensitive sensor by exerting pressure or a button.
- the haptic button element 110 is applied directly to the cover film layer 90. Cover film layer 90 is in turn connected to structured diffuser layer 51 . Individual layers of the display and control element are arranged between two glass layers 100 and 101 in partial figure 13B.
- Cover film layer 90 of the display and control element is applied to the side of glass layer 101 facing away from optoelectronic components 25 .
- the touch-sensitive sensor 60 is arranged thereon.
- the haptic key element 110 is located directly on the touch-sensitive sensor and is therefore arranged in the immediate vicinity of the same. This embodiment is expedient because the display and control element can be manufactured separately as a separate display element with the two glass layers 100 and 101 . In a subsequent step, the touch-sensitive sensor is then used together with the haptic touch element
- Figure 14 shows another embodiment, this time with a shadow mask 50.
- the two sub-figures 14A and 14B are constructed in a similar way and essentially correspond to the embodiment of Figure 1.
- FIG. 15 shows another different concept of the proposed principle, in which the display and control element has a further main emission direction in contrast to the previous exemplary embodiments.
- This second main emission direction 28 ′ is opposite to the first main emission direction 28 .
- the optical display and control element is constructed essentially symmetrically with its individual layers, with a central layer 20 being designed as a luminous film with a number of optoelectronic components 25.
- the adhesive layer 75, on which the sensitive sensor element 60 is arranged, is provided along the second main emission direction 28'.
- a structured diffuser layer 40' is then applied, which is followed by a second shadow mask 50'.
- the shadow mask 50' is in turn covered by the cover film layer 90 and a color layer 80 structured in the same way.
- the symbol of the second shadow mask 50' can differ from the symbol of the first shadow mask 50 along the first main emission direction 28. However, it is also possible that both show the same symbol.
- the two optoelectronic components 25 and 25' generate light in the different main emission directions 28 or 28'.
- a suitable reflection layer or absorber particles within the light-emitting film 20 can prevent light from the upper area, i.e. along the first main emission direction, from being reflected back into the second area. Conversely, light emitted in the second main emission direction 28' cannot reach the region of the first main emission direction and the shadow mask 50 through the absorber particles in the luminous foil 20.
- the optical display and control element can be implemented for use on both sides, whereby the symbols can be controlled differently on both sides of the application.
- FIG. 15B A further embodiment of such a principle is shown in partial figure 15B.
- the shadow masks 50 and 50' are replaced by structured diffuser layers 51 and 51', as in the previous embodiments.
- only one type of optoelectronic components 25 is provided, which is designed to emit light both in the first main emission direction 28 and in the second main emission direction 28 ′, starting from the luminous film 20 .
- the optoelectronic components 25 thus generate light in both directions during operation.
- a first glass layer 101 is now applied to the diffuser layer 51'.
- a touch-sensitive sensor 60 with a transparent cover layer 90 following it is arranged on this glass layer.
- the touch-sensitive sensor and the cover layer 90 are encapsulated with one another by a further glass layer 101'.
- a similar structure is located on the second diffuser layer 51' with a glass layer 100, a touch-sensitive sensor 60' and a cover layer 90 arranged thereon.
- This touch-sensitive sensor 60' with its cover layer 90 is also surrounded by a further glass layer 100'.
- the two touch-sensitive sensors and their readout and control electronics are designed in such a way that they can recognize the side from which a user touches the optical display and control element or exerts pressure on it. This can be determined, for example, by the different changes in capacitance in the touch-sensitive sensors 60 and 60'. Thus, a change in capacitance is likely to be greater in the sensor closer to the user's touch point.
- a control element can be embedded in a transparent surface between two panes, for example, and operated from either side.
- FIG. 16 shows, in its partial figures A and B, a further embodiment in which the luminous film 20 with its optoelectronic African components 25 directly and immediately to the diffuser layer 40 and the structured diffuser layer 51 is attached.
- the optoelectronic components are integrated in the light-emitting film 20 in partial figure 16A.
- the luminescent film 20 and the diffuser layer 40 are connected to one another without a further additional adhesive layer.
- the thickness of the diffuser layer 40 is selected in such a way that the symbols of the shadow mask 50 can nevertheless be illuminated sufficiently homogeneously.
- the diffuser layer 51 is structured and connected in a similar way directly to the light-emitting film 20 without any further adhesive layer or only by a very thin adhesive layer.
- the adhesive layer 75 connects the luminous film 20 to the touch-sensitive sensor 60 on the side facing away from the main emission direction.
- FIG. 17 shows a further embodiment of the proposed principle.
- optoelectronic components 25 are arranged on the surface of the luminous film 20 .
- the diffuser layer 40 now includes one or more depressions 71 and is placed in such a way that the component or components 25 come to lie approximately centrally in the depression 71 .
- a separate depression for each component 25 or a common depression can be provided for several compo elements.
- the recess 71 thus forms a cavity in the optical display and control element, so that the optoelectronic component 25 is surrounded by a medium which has a lower refractive index than the diffuser layer 40. This reduces back reflection and the emission behavior in the direction of the shadow mask 50 can be set appropriately.
- the thickness of the diffuser layer 40 is selected in such a way that sufficient homogenization over the symbol generated by the shadow mask 50 can be set.
- FIG. 18 now shows a possible application of a display and control element according to the proposed principle.
- the display and serving element one or more possible optoelectronic construction elements.
- the optoelectronic components form a simple matrix structure in rows and columns, with the homogenization and display of the symbol taking place using a shadow mask as the symbol element.
- the arrangement of the optoelectronic components is selected such that they follow the shape or the arrangement of the symbol to be displayed.
- FIG. 18 shows an embodiment of a stylized sun as a possible display and control element.
- the display and control element can be switched between three states, which are referred to as "off", "half-on” and "on”.
- the optoelectronic components are switched off and the symbol is essentially not visible or only visible through its structuring or the shadow mask.
- the status of the display and control element is switched from the status “off” to the status “half-on”. In this state, it is possible, for example, to activate only half of the respective optoelectronic components in order to produce a low degree of illumination.
- the optoelectronic components that are assigned to the lower half of the sun shown can be switched on.
- the components can also be operated with less current, so that the intensity is lower.
- the display and control element is switched from the "half-on" state to the "on” state.
- all optoelectronic components are activated equally and the symbol is displayed in its full form.
- the brightness of the symbol can also be changed. Due to the special arrangement of the optoelectronic components under a mold structure of the symbol together with the diffuser layer ensures uniform illumination of the symbol even with different light intensities.
- FIG. 19 shows an operating panel that can be placed on a windshield or another transparent surface, for example.
- control panel shown here includes several symbols that can be illuminated differently and also have different colors in the different states.
- the control panel comprises a control element with a single character, then a control element with an information display called "Passenger Airbag" with additional two switchable symbols for active switching on and off, and on the right side a control element with another icon .
- FIG. 20 shows in schematic form the various method steps for producing a display and control element according to the proposed principle.
- a carrier element is provided.
- This can be, for example, a flexible carrier film made from a transparent or non-transparent plastic.
- this carrier film is also filled with absorber particles in order to avoid light reflection and wave conduction within the operating element.
- the carrier element can also be the glass pane itself, on which the other elements of the display and control element are applied at a later point in time.
- a light-emitting film is now provided, in or on which at least two optoelectronic components and contact lines connected thereto are arranged.
- the components are designed to generate light of a first and optionally also a further wavelength along a first main emission direction.
- a luminescent film can already be prefabricated, with the optoelectronic components being able to be integrated both on the surface of the luminescent film and in it.
- the luminescent film is formed by a plurality of partial layers which are arranged one on top of the other and enclose the optoelectronic components on both sides.
- step S3 the luminescent film is placed on the carrier element and fastened to it.
- an adhesive layer can be used in a suitable manner, which element is arranged between the carrier element and the luminescent film.
- the luminescent film directly on the carrier element without a further adhesive layer and to attach it to it by means of pressure and heat, among other things.
- a diffuser layer is then arranged on the luminescent film in step S4, so that the light emitted by the optoelectronic components reaches the diffuser layer.
- the diffuser layer is arranged on the light-emitting film in such a way that sufficient homogenization of the emitted light is achieved.
- an additional adhesive layer can be provided between the diffuser layer and the luminescent film, the thickness of which can be suitably adjusted.
- a structured symbol element is now provided, which is not arranged in front of the diffuser layer with respect to the main emission direction.
- the symbol element is designed to image at least one symbol during operation of at least one of the at least two optoelectronic components and when a user views the diffuser layer from above along the first main emission direction.
- the structured symbol element can thus depict one or more symbols, characters or letters.
- a touch-sensitive sensor is provided. This is designed to detect, detect and detect a contact or pressure exerted either along the first main emission direction or opposite to it to generate an electrical signal from it.
- the touch-sensitive sensor is arranged between the diffuser layer and the light-emitting foil or behind the light-emitting foil, ie outside the first main emission direction.
- an additional cover layer can optionally be provided, which on the one hand protects the diffuser layer from possible damage and on the other hand brings about an adjustment of the refractive index.
- the additional top layer can also be provided with haptic touch elements.
- FIG. 21 shows a further embodiment and supplement to the method, in which in step S2′ a luminous film with optoelectronic components is provided, which have two main emission directions opposite to one another. This makes it possible for the optoelectronic components to emit light on both sides during operation, which makes it possible to display them in different directions.
- the method further comprises step S7, in which a second diffuser layer is applied in such a way that it is arranged downstream of the at least two optoelectronic components with respect to the second main emission direction.
- the second diffuser layer is either structured itself, so that it forms a second structured symbol element due to a spatially inhomogeneous distribution of diffuser or absorber particles.
- a second structured symbol element can also be arranged on the second diffuser layer, with the second structured symbol element not being in front of the second diffuser layer with respect to the second main emission direction.
- the structured second symbol element visualises a corresponding symbol for a user.
- a second touch-sensitive sensor is also arranged, which is designed to detect an applied touch or an applied pressure along the second main emission direction and to generate an electrical signal therefrom. In this way, an optical display and operating element is created which can be operated in the same way from both sides.
- the symbols generated by the first and second symbol elements can be different for a user.
- a suitable absorber or reflection layer also prevents the light from one side from reaching the other side.
- the symbols can also be designed differently using suitable electrochromic color layers or other measures, so that the symbols can be changed depending on the status of the display and control element. This allows a great deal of flexibility in use, not only for double-sided display and control elements, but also for one-sided display and control elements, and creates various display options on transparent surfaces.
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Power Engineering (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Computer Hardware Design (AREA)
- Human Computer Interaction (AREA)
- Theoretical Computer Science (AREA)
- Illuminated Signs And Luminous Advertising (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
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DE112022002280.9T DE112022002280A5 (de) | 2021-04-22 | 2022-04-21 | Bedienelement und verfahren zur herstellung eines bedienelementes |
CN202280030343.5A CN117203766A (zh) | 2021-04-22 | 2022-04-21 | 操作元件和用于制造操作元件的方法 |
US18/287,845 US20240191868A1 (en) | 2021-04-22 | 2022-04-21 | Operating element and method for producing an operating element |
Applications Claiming Priority (2)
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DE102021110363.0 | 2021-04-22 | ||
DE102021110363.0A DE102021110363A1 (de) | 2021-04-22 | 2021-04-22 | Bedienelement und verfahren |
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WO2022223726A1 true WO2022223726A1 (de) | 2022-10-27 |
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PCT/EP2022/060612 WO2022223726A1 (de) | 2021-04-22 | 2022-04-21 | Bedienelement und verfahren zur herstellung eines bedienelementes |
Country Status (4)
Country | Link |
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US (1) | US20240191868A1 (de) |
CN (1) | CN117203766A (de) |
DE (2) | DE102021110363A1 (de) |
WO (1) | WO2022223726A1 (de) |
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DE102022102368A1 (de) | 2022-02-01 | 2023-08-03 | OSRAM Opto Semiconductors Gesellschaft mit beschränkter Haftung | Bedienelement und verfahren |
DE102022110160A1 (de) | 2022-04-27 | 2023-11-02 | Ams-Osram International Gmbh | Optoelektronisches bauelement |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2012150304A (ja) * | 2011-01-20 | 2012-08-09 | Tokai Rika Co Ltd | 表示装置 |
DE102016206174A1 (de) * | 2016-04-13 | 2017-10-19 | E.G.O. Elektro-Gerätebau GmbH | Anzeigeelement, Anzeigevorrichtung mit einem solchen Anzeigeelement und Elektrogerät mit einer solchen Anzeigevorrichtung |
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JP2012523671A (ja) | 2009-04-09 | 2012-10-04 | タッチセンサー テクノロジーズ,エルエルシー | 統合されたタッチセンサ電極およびバックライトマスク |
DE102010062428B4 (de) | 2010-12-03 | 2013-11-21 | BSH Bosch und Siemens Hausgeräte GmbH | Optische Bedien- und/oder Anzeigeeinheit |
DE102011050585B4 (de) | 2011-05-24 | 2014-05-08 | Kunststoff Helmbrechts Ag | Verfahren zur Herstellung eines Kunststoffformkörpers als Anzeige- und/oder Funktionselement und Kunststoffformkörper |
JP2019124930A (ja) | 2018-01-04 | 2019-07-25 | ハーマン ベッカー オートモーティブ システムズ ゲーエムベーハー | 透過材料照射 |
-
2021
- 2021-04-22 DE DE102021110363.0A patent/DE102021110363A1/de not_active Withdrawn
-
2022
- 2022-04-21 WO PCT/EP2022/060612 patent/WO2022223726A1/de active Application Filing
- 2022-04-21 US US18/287,845 patent/US20240191868A1/en active Pending
- 2022-04-21 DE DE112022002280.9T patent/DE112022002280A5/de active Pending
- 2022-04-21 CN CN202280030343.5A patent/CN117203766A/zh active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2012150304A (ja) * | 2011-01-20 | 2012-08-09 | Tokai Rika Co Ltd | 表示装置 |
DE102016206174A1 (de) * | 2016-04-13 | 2017-10-19 | E.G.O. Elektro-Gerätebau GmbH | Anzeigeelement, Anzeigevorrichtung mit einem solchen Anzeigeelement und Elektrogerät mit einer solchen Anzeigevorrichtung |
Also Published As
Publication number | Publication date |
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US20240191868A1 (en) | 2024-06-13 |
CN117203766A (zh) | 2023-12-08 |
DE112022002280A5 (de) | 2024-04-25 |
DE102021110363A1 (de) | 2022-10-27 |
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