• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention relates to a light source carrier (s) for a light module, particularly for a motor vehicle, comprising a substrate (4), at least one surface light source (8) of the organic electroluminescence diode type supported by the substrate (4), said source or each of said sources comprises at one or more edges at least two areas (81, 82, 83) of electrical contact, electrical tracks (20) deposited on the substrate (4), and contacts between the electrical contact areas (81, 82, 83) of the light source (s) (8) and the electrical tracks. The electrical contacts comprise resilient lamellae (221, 222, 223) in pressure contact with the contact zone or zones (81, 82, 83) of the at least one surface light source (8) and with the electrical tracks (20). on the substrate (4).
    公开号:FR3025860A1
    申请号:FR1458674
    申请日:2014-09-15
    公开日:2016-03-18
    发明作者:Hui Jin；Zdravko Zojceski；Maxime Briand；Christophe Dubosc；David Hue
    申请人:Valeo Vision SA；
    IPC主号:
    专利说明:

    [0001] The invention relates to the field of lighting and / or light signaling, in particular for a motor vehicle. More specifically, the invention relates to the field of lighting and light signaling by means of electroluminescence diodes (LEDs) and organic electroluminescence diodes (OLEDs). The published patent document DE 20 2013 105 597 U discloses a surface light source support of the OLED diode type. The support includes an extended substrate supporting the OLED diode and a cover extending substantially perpendicular to the substrate. The OLED diode traverses the cache and includes electrical connection areas. This document discloses in paragraphs [0113] and [0139] that the substrate may comprise electrical contacts cooperating with the diode on its part of the cache side. This document, however, does not further specify the nature and configuration of these electrical contacts. The published patent document US 2014/0056020 A1 discloses a light module 15 for a motor vehicle, comprising a series of surface light sources of the OLED type. These OLED diodes are arranged in a circular manner. This document, however, does not seem to detail how OLED diodes are supported. These include electrical connectors protruding at one edge. This document, however, does not further specify how these connectors are connected to a feeder. The published patent document FR 2 995 657 A1 discloses an OLED type diode light source, comprising a support with cavities filled by the diodes. The support comprises on one of its faces electrodes or electrical tracks intended to electrically contact the diodes for their power supply. The diodes comprise a stack of organic layers and a transparent substrate disposed on the stack in question. The substrate has a larger surface area than the organic layers to extend beyond the corresponding cavity and thus come to contact the electrical tracks, near the cavity. The support is made by injection of insulating material such as thermoplastic or thermosetting plastic. It can be plane, with a jump or even more complex shape. The electrical connection between the electrical tracks and the OLED diodes is interesting in that it is performed when the diodes are placed in their respective cavities. This type of connection is however limited to a very specific configuration where the diodes are inserted into cavities. The object of the invention is to propose an OLED surface-type light source support (s) with an efficient connection system. The subject of the invention is a luminous source support (s) for a light module, in particular for a motor vehicle, comprising: a substrate; at least one surface light source of the organic electroluminescence diode type supported by the substrate, said source or each of said sources comprises at least two electrical contact zones; electrical tracks deposited on the substrate; electrical contacts between the electrical tracks and the electrical contact areas of the light source or sources; remarkable in that the electrical contacts comprise elastic lamellae, in press contact with the contact zones of the surface light source (s) and with the electric tracks. The at least two electrical contact zones of the light source or of each of the light sources are advantageously located at one or more edges of said source. Advantageously, the electrical tracks are made via a metal coating 20 deposited on the substrate. Where appropriate, the metallic coating of the electric tracks at the location of the electrical contact is chosen to be compatible with the electrical contact at the location of the electric tracks. The metal coating at the location of the electrical contact and the electrical contact at the location of the electrical tracks may for example each include an upper layer at least 25 μm thick comprising a nickel-gold alloy, so as to guarantee the reliability of the electrical contact. Alternatively, other alloys such as tin, silver or nickel-palladium-gold may be chosen. If desired, the or each of the electrical contact zones may be lubricated so as to increase the reliability of the electrical contact. According to an advantageous embodiment of the invention, the or each of the electrical contact zones of the surface light source or sources in electrical contact with an electrical track forms an angle with the zone of said electrical track in contact with the elastic lamellae. said angle being preferably greater than 30 °, more preferably 50 °. According to an advantageous embodiment of the invention, the surface light source (s) each comprise two opposite main faces, the electrical contact zones of said light source (s) being located on one of said faces. The edges of the edges with the contact areas are preferably free of electrical contact with said contact areas. According to an advantageous embodiment of the invention, each of the elastic strips 10 comprises at least two bent portions, each of said two bent portions being in contact with one of the contact areas of the surface light source or sources or with one of the electrical tracks. According to an advantageous embodiment of the invention, each of the bent portions forms an interior angle of less than 120 °, preferably less than 110 °, more preferably less than 100 °. According to an advantageous embodiment of the invention, each of the elastic lamellae comprises at least one, preferably both, of its ends a generally flat portion slidable along a guide surface. According to an advantageous embodiment of the invention, the support comprises an insert supporting the elastic lamellae. According to an advantageous embodiment of the invention, the insert comprises the guide surfaces of the flat end portions of the resilient lamellae. According to an advantageous embodiment of the invention, the insert comprises grooves 25 forming the guide surfaces and receiving the flat end portions of the elastic strips. Advantageously, the grooves may be formed by the same crenellated notch, each slot forming one of the grooves. According to an advantageous embodiment of the invention, the substrate comprises an extended portion, preferably generally flat, with two opposite main faces and an edge, the electric tracks being deposited on at least one of the two faces of said extended portion, the or each of the surface light sources extending transversely to said portion with an edge provided with contact areas adjacent to one of said main faces. The support preferably comprises two surface light sources extending in substantially opposite manner. According to an advantageous embodiment of the invention, the or each of the surface light sources forms an angle of less than 30 ° with a direction perpendicular to the mean plane of the extended portion, said angle being preferentially less than 25 °, more preferably less than 20 °. °. According to an advantageous embodiment of the invention, the insert comprises at least one edge supporting the elastic lamellae. According to an advantageous embodiment of the invention, the elastic strips overlap the edge or edges of the insert.
    [0002] According to an advantageous embodiment of the invention, the insert comprises two ridges supporting the elastic lamellae, said ridges extending substantially parallel to each other, the insert comprising a main groove between said ridges, said groove receiving the edge of the extended portion of the substrate.
    [0003] According to an advantageous embodiment of the invention, the elastic lamellae comprise first lamellae each overlapping exclusively one of the two edges. According to an advantageous embodiment of the invention, the first slats have a generally U-shaped profile and provide electrical contact between electrical tracks and electrical contact areas of the surface light source or sources.
    [0004] According to an advantageous embodiment of the invention, the slats comprise second slats, each of said second slats overlapping the two edges and extending through the groove of the insert. According to an advantageous embodiment of the invention, the second lamellae have a profile comprising two generally U-shaped lateral portions and each overlapping one of the two ridges and a central portion, preferably in the general U-shape opposite to the U side portions. According to an advantageous embodiment of the invention, the second lamellae provide electrical contact between electrical contact zones of two surface light sources disposed on either side of the generally flat portion of the substrate. According to an advantageous embodiment of the invention, the edge of the extended portion of the substrate forms a protruding tongue, the electrical tracks on the substrate extending as far as said tongue, the insert comprising a notch or aperture adapted to receive said tab so as to provide a space for engagement with an electrical connector. According to an advantageous embodiment of the invention, the insert comprises portions protruding from the extended portion of the substrate and intended to support the surface light source or sources.
    [0005] According to an advantageous embodiment of the invention, the support comprises additional light sources of the electroluminescence type and stuck directly on the substrate, said sources being electrically connected to the electrical tracks. The invention also relates to a light module, in particular for a motor vehicle, comprising a light source carrier (s) and at least one optical device, which is remarkable in that said support is in accordance with the invention. The measures of the invention are interesting in that they make it possible to make electrical connection of the surface light sources in a clean, simple and efficient manner. The slats can indeed be put in place on the insert. During the assembly of the support, the implementation of the insert 25 will then ensure not only the mechanical maintenance of the surface light sources, but also their electrical connection to the substrate. Other features and advantages of the present invention will be better understood with the help of the description and the drawings, among which: FIG. 1 is a perspective view of a light module comprising a light source support according to FIG. invention; FIG. 2 is an exploded view of the light source support of the module of FIG. 1, the support comprises a substrate and an insert; FIG. 3 is a detailed view of the substrate, surface light sources of the OLED type and contact lamellae of the module of FIG. 1; - Figure 4 is a detailed view of the insert of the support of Figure 2, the insert supporting the contact strips; - Figure 5 is a view according to another perspective of the insert of Figure 4; Figure 6 is a view of the contact lamellae. FIG. 1 illustrates a light-signaling module for a motor vehicle. The module 2 is configured to be housed in a housing disposed at the rear of the vehicle. It is configured to provide a lantern (or taillight) function, a stop lamp function and a direction indicator (or flashing) function.
    [0006] The module 2 comprises a substrate 4 and a part 6 attached to the substrate. The insert 6 can be attached to the substrate by means of screws. The substrate 4 essentially comprises a central portion 41, two side walls 42, two end walls 43 projecting from the side walls 42. The two side walls 42 form a cavity housing light sources (not visible) and a collimator 10 to form a light beam for a direction indicator function. The insert 6 comprises two supports 61 and a rear portion 62. The supports 61 are arranged to protrude from the central portion 41 of the substrate 4 substantially opposite to each other. Each of these supports 61 supports a surface diode of OLED type 8. An OLED is a light emitting diode comprising a superposition of several organic semiconductor layers between two electrodes of which at least one is transparent. In this case, these OLED diodes provide a lantern function. The rear portion 62 of the gear 6 is configured to house a power supply connector 14.
    [0007] The substrate 4 of the module 2 also supports one or more light sources (not visible in FIG. 1 but in FIG. 2) between the lateral walls 42 and the OLED diodes 8, this or these light sources being covered with a collimator 12 for providing a stop lamp function. More precisely, the rays emitted by these light sources and deflected by the collimator 12 to meet the front face of the corresponding OLED diode 8 and be reflected towards the front of the module. The longitudinal axis of the module shown in FIGS. 1 and 2 corresponds to its optical axis. This means that the different light beams produced by the module 2 are oriented substantially along this axis. All these beams are preferably directed towards the front of the module (corresponding to the right in FIG. 1 and at the rear of the vehicle). The collimators 10 and 12 are parts made of transparent or translucent material, such as glass or polycarbonate (PC). They include inlet and / or outlet surfaces oriented to deflect the spokes along a principal direction, in application of the Snell-Descartes refractive principle. The input and output faces each form a diopter, namely a surface separating two transparent homogeneous and isotropic media of different refractive indices. The refractive index of air is in fact of the order of 1 while that of glass and polycarbonate is between about 1.4 and 1.6. The operating principle of a collimator is well known to those skilled in the art; it is therefore not necessary to detail it further. FIG. 2 illustrates in an exploded manner the support of the light sources of the module 2. The support comprises the substrate 4 and the insert 6. The substrate 4 comprises, in its central portion, an extended portion 44 and a portion 45 projecting from 25 said extended portion 44. This projecting portion 45 is intended to cooperate by engagement with the connector 6 (Figure 1) for the power supply of the light sources. Electrical tracks 18 are formed on the surface of the substrate 4, continuously from the light sources to the connecting portion 45. FIG. 2 illustrates the LED light sources 16 disposed on the rear face of the side wall. 42, it being understood that a similar arrangement is provided on the lower side wall, this arrangement being not visible. Light sources (not visible), also of the LED type, 3025860 8 are also provided between the two side walls 42 at the bottom of the cavity formed by said walls. These light sources are also electrically connected by the electrical tracks 18. The light sources arranged directly on the substrate 4, are thus electrically powered by the electrical tracks 18 extending continuously from said sources to the connecting portion 45 It can be seen in FIG. 2 the presence of electrical tracks 20 whose extent is limited to the rear edge of the extended portion 44. These tracks are used to power the surface light sources OLED 8 (FIG. 1), as will be detailed. 10 in connection with the following figures. The substrate 4, including the connection portion 45, is made of plastic material molded and supports light sources and electrical tracks, in accordance with the MID (acronym for "Molded Interconnect Device") technology. The plastic material of the substrate 4 may be doped with metal particles capable of ensuring the attachment of the electrical tracks 18 made of metallic material to its outer surface. The electrical tracks 18 and 20 can be realized by the technology designated by the acronym LDS meaning in English "Laser Direct Structuring". This involves running a laser beam on the corresponding surface of the substrate, according to the configuration of the tracks to be made. The laser beam has the effect of forming a roughness capable of promoting attachment. This step is followed by a metallization by dipping the substrate in one or more successive metal baths. Alternatively or in a complementary manner, the electric tracks may be made by ink jet printing, the ink of which comprises metal particles. The tracks can also be made by a two-stage molding of the substrate, or else designated "Two shot molding" in English. This is an injection molding process using two different resins where only one of the two resins is metallizable. Typically, the metallizable resin is ABS and the non-metallizable resin is polycarbonate. The substrate is then subjected to an auto-catalytic deposition process where butadiene is used to chemically roughen the surface and allow adhesion of a copper primer. Due to the thermoplastic nature of the substrate, the use of conventional soldering methods for electrical contacts is not suitable. The LEDs are mechanically and electrically fixed by applying a polymer-based adhesive loaded with metal elements. It is thus a so-called "cold" application process not harming the substrate. After polymerization of the adhesive, it ensures the mechanical and electrical fixation of the LED.
    [0008] FIG. 3 illustrates in detail the electrical connection between the OLED surface diodes 8 and the electrical tracks 20 of the substrate 4. It can be seen that each of the two surface diodes 8 comprises five zones 81, 82 and 83 of electrical contact along their respective edges, these edges being adjacent to the extended portion 44 of the substrate 4, on either side of said portion.
    [0009] The two zones 81 are located at both ends of the edge of the diode and are electrically connected, within the diode, to the cathode, or negative electrode, of said diode. The two contact zones 82 are, within the diode, connected to a first anode, or positive electrode, while the contact zone 83 is connected, still within the diode, to a second anode. The first and second anodes cover different areas of the diode extent while the cathode covers all areas of the two anodes. The diodes thus have two lighting zones that can be powered independently of one another. It should be noted that this configuration is purely illustrative, it being understood that other configurations are possible.
    [0010] Still in FIG. 3, the presence of elastic contact strips 221, 222 and 223 is also observed. These strips are in fact supported by the insert 6, as will be detailed with reference to FIGS. 4 and 5. The lamellae Elastics 221, 222 and 223 are provided to provide pressure contact, i.e. requiring neither welding nor mechanical engagement per se. A first type of lamella 222, 223 is provided to ensure electrical contact between the contact areas 82, 83 of the diodes with the corresponding tracks on the rear edge of the extended portion 44. A second type of lamella 221 ensures a connection between the two surface diodes 8, more precisely between their zones 81 disposed vis-à-vis, respectively. It should be noted that what is visible for the upper surface diode is also visible for the lower diode. It should be noted, however, that unlike the upper face of the extended portion 44 of the substrate 4, an electrical track is provided on the lower face at the rear edge of said portion, at least one of the lamellae 221 to ensure a grounding of the zones 81 of the two diodes 8. The lamellae 221, 222 and 223 can be made from a strip of metal material.
    [0011] Figures 4 to 6 illustrate the insert and the resilient lamellae. In FIGS. 4 and 5, it can be seen that the insert 6 comprises on its front face two ridges 63 which are overlapped by the lamellae 221, 222 and 223. The two edges extend essentially parallel to one another on both sides. Another is a main groove 64. The latter is intended to receive the trailing edge of the extended portion 44 of the substrate 4 (FIGS. 2 and 3). The insert also includes an orifice 65 in the bottom and in the center of the groove 64, this opening being intended to receive the connection portion 20 of the substrate (Figures 2 and 3). More particularly with reference to FIG. 5, it can be seen that the insert 6 comprises guide grooves 66, 67 and 68, these grooves slidably receiving the ends of the lamellae 221, 222 and 223. Referring to FIG. 6, it is observed that each of the strips 221, 222 and 223 comprises at its two ends portions 24 generally flat. It can also be seen that each of these lamellae forms at least two bent portions 26. More specifically, the lamellae 222 and 223 each have a generally U-shaped profile so as to form the two bent portions 26 and the two flat portions. 24. However, the strips 222 have a flaring profile while the strips 223 have a profile whose edges, or the flat portions 24, are generally parallel. The slats 221 are somewhat different in that their profile comprises two U-shaped lateral portions and a central portion 28 connecting the two lateral portions. The central portion 28 extending from the planar portions 26 also forms a U which is however generally opposed to the U-shaped side portions. The central portion 28 is intended to be housed in the bottom of the groove 64 of the insert, as can be seen in FIGS. 4 and 5. The bent portions 26 of the lamellae are intended to contact the electrical contact zones 81, 82 and 83 surface diodes 8 and electrical tracks 20 on the substrate 4 (Figures 2 and 3).
    权利要求:
    Claims (4)
    [0001]
    REVENDICATIONS1. Light source support (s) for a light module, in particular for a motor vehicle, comprising a substrate (4); at least one surface light source (8) of the organic electroluminescence diode type supported by the substrate (4), said source or each of said sources, at least two electrical contact zones (81, 82, - electrical tracks (18, 20) deposited on the substrate (4) - electrical contacts between the electrical tracks (20) and the electrical contact zones (82, 83) of the at least one light source (8), characterized in that the electrical contacts comprise resilient lamellae (221, 222, 223) in pressure contact with the contact areas (81, 82, 83) of the at least one surface light source and with the electrical tracks (20),
    [0002]
    2. Support according to claim 1, characterized in that the or each of the electrical contact areas (82, 83) of the surface light source or sources (8) in electrical contact with an electrical track (20) forms an angle with the zone of said electrical track (20) in contact with the elastic blade, said angle being preferably greater than 30 ", more preferably 50 °.
    [0003]
    3. Support according to one of claims 1 and 2, characterized in that each of the elastic lamellae (221, 222, 2e) comprises at least two bent portions (26), each of said two bent portions being in contact with one of the zones electrical contact (81, 82, 83) of the at least one surface light source (8) or with one of the electrical tracks (20).
    [0004]
    4. Support according to one of claims 1 é 3, characterized in that each of the elastic lamellae (221, 222, 223) comprises at least one, preferably both, of its ends a generally flat portion (24) adapted to slide along a guide surface. 3. Support according to one of claims 1 to 4, characterized in that it comprises an insert (6) supporting the resilient lamellae (221, 222, 223), 6, support according to claims 4 and 5, characterized in that the insert (8) comprises the guide surfaces of the planar end portions (24) of the resilient lamellae (221, 222, 223). 7. Support according to claim 6, characterized in that the insert (6) comprises guide grooves (68, 67, 68) forming the guide surfaces and receiving the flat end portions (24) of the elastic strips 10. (221, 222, 223). B. Support according to one of claims 5 to 7, characterized in that the insert (6) comprises at least one edge (63) supporting the elastic lamellae (221, 222, 223). 9. Support according to claim 8, characterized in that the insert (6) comprises two edges (63) supporting the resilient lamellae (221, 222, 223), said ridges extending substantially parallel to each other. another, the insert comprising a main groove (84) between said ridges, said groove receiving the edge of the extended portion (44) of the substrate (4). 10, support according to claim 9, characterized in that the elastic strips (221, 222, 223) comprise first strips (222, 223) each overlapping exclusively one of the two edges, 11, support according to claim 10 characterized in that the first lamellae (222, 223) have a generally U-shaped profile and provide electrical contact between electrical tracks (20) and electrical contact areas (82, 83) of the source or sources. luminous surfaces (8). 12. Support according to one of claims 10 and 11, characterized in that the strips (221, 2221 223) comprise second lamellae (221), each of said second lamellae overlapping the two edges (63) and extending through the main groove (64) of the insert (8). Support according to claim 12, characterized in that the second lamellae (221) have a profile comprising two generally U-shaped lateral portions (24, 26) each overlapping one of the two edges and a central portion (20). 28), preferably in the general U-shape opposite to the U-shaped portions of the lateral portions, 14, Support according to one of claims 12 and 13, characterized in that the second lamellae (221) provide electrical contact between zones of electrical contact (81) of two surface light sources (8) disposed on either side of the extended portion (44) of the substrate (4). 15. Support according to one of claims 5 to 14, characterized in that the edge of the extended portion (44) of the substrate (4) forms a tongue (45) projecting, the electrical tracks (18, 20) on the substrate (4) extending to said tab (45), the insert (6) comprising a notch or aperture (65) adapted to receive said tongue (45) so as to provide space for engagement with an electrical connector (14). 18, light module, especially for a motor vehicle, comprising a light source carrier (s) and at least one optical device, characterized in that said support is in accordance with one of claims 1 to 15.
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    法律状态:
    2015-09-30| PLFP| Fee payment|Year of fee payment: 2 |
    2016-03-18| PLSC| Search report ready|Effective date: 20160318 |
    2016-09-28| PLFP| Fee payment|Year of fee payment: 3 |
    2017-09-29| PLFP| Fee payment|Year of fee payment: 4 |
    2018-09-28| PLFP| Fee payment|Year of fee payment: 5 |
    2019-09-30| PLFP| Fee payment|Year of fee payment: 6 |
    2021-06-11| ST| Notification of lapse|Effective date: 20210506 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1458674A|FR3025860B1|2014-09-15|2014-09-15|OLED DIODE SUPPORT WITH ELASTIC CONNECTION SLABS|FR1458674A| FR3025860B1|2014-09-15|2014-09-15|OLED DIODE SUPPORT WITH ELASTIC CONNECTION SLABS|
    EP15184653.2A| EP2996202A1|2014-09-15|2015-09-10|Oled diode mounting with resilient connection strips|
    US14/853,267| US9829170B2|2014-09-15|2015-09-14|OLED diode support with elastic connection blades|
    JP2015182238A| JP2016062893A|2014-09-15|2015-09-15|Oled diode support medium having resilient connection blade|
    CN201510586887.1A| CN105423206B|2014-09-15|2015-09-15|The support device of OLED diode with flexible connection piece|
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