WO2018040518A1 - 照明组件和照明装置 - Google Patents

照明组件和照明装置 Download PDF

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Publication number
WO2018040518A1
WO2018040518A1 PCT/CN2017/074252 CN2017074252W WO2018040518A1 WO 2018040518 A1 WO2018040518 A1 WO 2018040518A1 CN 2017074252 W CN2017074252 W CN 2017074252W WO 2018040518 A1 WO2018040518 A1 WO 2018040518A1
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Prior art keywords
electrode
region
lighting assembly
light emitting
blocks
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PCT/CN2017/074252
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English (en)
French (fr)
Inventor
钟杰兴
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京东方科技集团股份有限公司
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Priority to EP17751224.1A priority Critical patent/EP3509091B1/en
Priority to US15/553,706 priority patent/US10305062B2/en
Publication of WO2018040518A1 publication Critical patent/WO2018040518A1/zh

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    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K50/00—Organic light-emitting devices
    • H10K50/80—Constructional details
    • H10K50/805—Electrodes
    • H10K50/81—Anodes
    • H10K50/813—Anodes characterised by their shape
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K50/00—Organic light-emitting devices
    • H10K50/80—Constructional details
    • H10K50/805—Electrodes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
    • H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
    • H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
    • H01L21/50—Assembly of semiconductor devices using processes or apparatus not provided for in a single one of the subgroups H01L21/06 - H01L21/326, e.g. sealing of a cap to a base of a container
    • H01L21/52—Mounting semiconductor bodies in containers
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K50/00—Organic light-emitting devices
    • H10K50/80—Constructional details
    • H10K50/805—Electrodes
    • H10K50/82—Cathodes
    • H10K50/822—Cathodes characterised by their shape
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K50/00—Organic light-emitting devices
    • H10K50/80—Constructional details
    • H10K50/84—Passivation; Containers; Encapsulations
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K50/00—Organic light-emitting devices
    • H10K50/80—Constructional details
    • H10K50/805—Electrodes
    • H10K50/81—Anodes
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K50/00—Organic light-emitting devices
    • H10K50/80—Constructional details
    • H10K50/805—Electrodes
    • H10K50/82—Cathodes

Definitions

  • the present invention relates to the field of lighting technologies, and in particular to a lighting assembly and a lighting device.
  • Lighting panels such as display backlights and indoor lighting in which an electroluminescent device such as an organic light emitting diode (OLED) or a quantum dot light emitting diode (QLED) is used as a light source have been proposed.
  • an illumination panel based on, for example, an OLED
  • a transparent electrode made of an indium tin oxide (ITO) material of an OLED has poor conductivity and will form a large voltage drop (IR-drop) on the current transmission path. This will result in non-uniformity in brightness of the OLED lighting panel.
  • ITO indium tin oxide
  • FIG. 1 schematically shows a plan view of a prior art lighting panel 100.
  • the illumination panel 100 has a light-emitting area 102 and a plurality of strip-shaped external electrodes 104 surrounding the light-emitting area 102. This somewhat improves the unevenness of the current distribution due to the poor conductivity of the electrodes in the electroluminescent device.
  • a wider strip-shaped outer electrode is typically employed such that the illumination panel has a boundary zone dedicated to the outer electrode, the border zone having a width of, for example, up to 4 mm.
  • Embodiments of the present invention provide a lighting assembly and lighting apparatus including the lighting assembly to provide more options for one or more of the above problems.
  • a lighting assembly comprising: a substrate having a first surface; at least one electrode region disposed on the first surface, each electrode region including a first external electrode and a second At least one of the external electrodes is such that the first surface is provided with at least one first external electrode and at least one second external electrode, the first external electrode and the second external electrode being insulated from each other; and an illuminating region, arranged At least one of the at least one electrode region on the first surface and surrounding the electrode region,
  • the light emitting region includes a first electrode layer, an electroluminescent layer, and a second electrode layer sequentially disposed in a direction away from the substrate, the first electrode layer electrically connecting the first external electrode, the second electrode The layer is electrically connected to the second external electrode.
  • the illumination assembly further includes: a first package region disposed on the first surface and located between the at least one surrounded electrode region and the light emitting region; and a second package region, Arranging on the first surface and surrounding the light emitting region; and a package structure formed on the first package region, the light emitting region, and the second package region to provide a package for the light emitting region.
  • the light emitting region occupies a region of the first surface other than the first package region, the second package region, and the at least one electrode region.
  • the first electrode layer comprises a plurality of individual sub-blocks.
  • the plurality of sub-blocks are grouped into at least one block, each block being powered via a respective one of the at least one first external electrodes such that power to each block is individually controllable.
  • the second electrode layer comprises a plurality of individual sub-blocks.
  • the plurality of sub-blocks are grouped into at least one block, each block being powered via a respective one of the at least one second external electrodes such that power to each block is individually controllable.
  • the first electrode layer and the second electrode layer each comprise a plurality of individual sub-blocks.
  • the plurality of sub-blocks of the first and second electrode layers are grouped into at least one block pair, each block pair via a respective one of the at least one first external electrode and the at least one The respective one of the two external electrodes is powered so that the power supply to each block pair is individually controllable.
  • a plurality of the electrode regions are evenly distributed over the first surface.
  • a plurality of the electrode regions are arranged such that a pattern formed by the plurality of electrode regions is rotationally symmetric about a center of the first surface.
  • the first electrode layer is an anode and the second electrode layer is a cathode.
  • the electroluminescent layer comprises an organic electroluminescent material or a quantum dot material.
  • a lighting device comprising the first aspect The lighting assembly.
  • Figure 1 schematically shows a plan view of a prior art lighting panel
  • FIG. 2A is a plan view schematically showing a lighting assembly in accordance with one embodiment of the present invention.
  • Figure 2B schematically shows a bottom view of the lighting assembly shown in Figure 2A;
  • Figure 2C schematically illustrates a variation of the arrangement of the electrode regions in the illumination assembly shown in Figure 2A;
  • FIG. 2D schematically illustrates another variation of the arrangement of the electrode regions in the illumination assembly shown in FIG. 2A;
  • Figure 3A schematically illustrates a plan view of a lighting assembly in accordance with one embodiment of the present invention
  • Figure 3B schematically and exemplarily shows a cross-sectional view of the lighting assembly shown in Figure 3A taken along line A-A;
  • Figure 4 is a schematic plan view of a lighting assembly in accordance with one embodiment of the present invention.
  • 5A-5E schematically illustrate plan views of various variations of the layout of electrode regions of a lighting assembly in accordance with one embodiment of the present invention
  • Figure 6 is a schematic plan view of a lighting assembly in accordance with one embodiment of the present invention.
  • first, second, third, etc. may be used herein to describe various elements, components, regions, layers and/ Layers and/or portions should not be limited by these terms. These terms are only used to distinguish one element, component, region, layer Thus, a first element, component, region, layer, or section, which is discussed below, may be referred to as a second element, component, region, layer or section without departing from the teachings of the invention.
  • under and under can encompass both the ⁇ RTIgt; Terms such as “before” or “before” and “after” or “following” may be used, for example, to indicate the order in which light passes through the elements.
  • the device can be oriented in other ways (rotated 90 degrees or in other orientations) and the spatially relative descriptors used herein interpreted accordingly.
  • a layer is referred to as “between two layers,” it may be a single layer between the two layers, or one or more intermediate layers may be present.
  • FIG. 2A schematically illustrates a plan view of a lighting assembly 200 in accordance with one embodiment of the present invention.
  • the illumination assembly 200 includes a substrate 202, a plurality of electrode regions 210, and a light emitting region 220.
  • the substrate 202 has a first surface, such as the top surface of the substrate 202.
  • a plurality of electrode regions 210 are disposed on the first surface, and each electrode region 210 includes a first outer electrode 212 (indicated by "+") and a second outer electrode 214 (indicated by "-") insulated from each other.
  • the light emitting region 220 is disposed on the first surface and surrounds the at least one electrode region 210. In this example, the light emitting region 220 is shown to surround all of the electrode regions 210.
  • the substrate 202 may be made of a transparent material such as glass or a transparent resin to provide light transmittance because the second surface (bottom surface of the substrate 202 opposite to the first surface in which the electrode region 210 is disposed) ) is usually used as a light-emitting surface.
  • FIG. 2B schematically illustrates a bottom view of the lighting assembly 200 shown in FIG. 2A.
  • each electrode region 210 is shown as a black block on the substrate 202.
  • the first outer electrode 212 and the second outer electrode 214 (not shown in FIG. 2B) in the electrode region 210 are typically made of an opaque metal material to provide good electrical conductivity.
  • the illumination assembly 200 suffers from a certain loss of illumination area, it is provided with improved brightness uniformity because Each electrode region 210 is now disposed in the light emitting region 220 and thus provides a more uniform current transfer path to various locations of the light emitting region 220.
  • a uniform current distribution can further provide a uniform heat distribution, thereby providing the possibility of omitting the thermally conductive material in the illumination assembly.
  • illumination assembly 200 has an inconspicuous boundary because there is now no electrode area surrounding illumination zone 220 at the edge of illumination assembly 200. This provides more design options, such as in applications where the lighting panels are required to be "seamlessly" spliced.
  • FIG. 2C schematically illustrates a variation of the arrangement of the electrode regions 210 in the illumination assembly 200 shown in FIG. 2A.
  • each electrode region 210 located at the periphery of the substrate 202 is now "outwardly" moved to the edge of the substrate 202 as compared to the arrangement of FIG. 2A.
  • the electrode region 210 at the center of the substrate 202 is surrounded by the light-emitting region 220, and the electrode region 210 at the edge of the substrate 202 is only partially surrounded by the light-emitting region 220.
  • the light-emitting region 220 is disposed only at its two sides.
  • Each electrode region 210 provides a relatively uniform current transmission path to various locations of the illumination region 220, and there is still no electrode region surrounding the illumination region 220 at the edge of the illumination assembly 200.
  • FIG. 2D schematically illustrates another variation of the arrangement of the electrode regions in the illumination assembly shown in FIG. 2A.
  • the electrode region 210 at the center of the substrate 202 includes both the first outer electrode 212 and the second outer electrode 214, and the remaining electrode regions 210 each include only the first outer electrode 212 or the second outer electrode 214. In other words, each electrode region 210 includes at least one of the first outer electrode 212 and the second outer electrode 214.
  • the electrode region 210 at the center of the substrate 202 may include only the first outer electrode 212 or the second outer electrode 214.
  • the single electrode region 210 may even include more than one first outer electrode 212 and/or more than one second outer electrode 214.
  • the number of first outer electrodes 212 may or may not be equal to the number of second outer electrodes 214 as long as the first surface is provided with at least one first outer electrode 212 and at least one second outer electrode 214 .
  • the lighting assembly 200 shown in Figure 2D has a similar lighting assembly as that shown in Figure 2A.
  • Each electrode region 210 provides a relatively uniform current transmission path to various locations of the illumination region 220, and there is still no electrode region surrounding the illumination region 220 at the edge of the illumination assembly 200.
  • FIG. 3A schematically illustrates a plan view of a lighting assembly 300 in accordance with one embodiment of the present invention.
  • the illumination assembly 300 includes a substrate 302, an electrode region 310, and a light emitting region 320 surrounding the electrode region 310.
  • illumination assembly 300 includes only one electrode zone 310, although a greater number of electrode zones are possible.
  • the electrode region 310 includes a first outer electrode 312 and a second outer electrode 314 that are insulated from each other.
  • the illumination assembly 300 further includes a first package region 330 disposed on the first surface of the substrate 302 and between the electrode region 310 and the light emitting region 320, and disposed on the first surface, compared to the illumination assembly 200 illustrated in FIG. 2A.
  • a second encapsulation region 340 that surrounds and surrounds the light emitting region 320.
  • the first encapsulation area 330 and the second encapsulation area 340 can be used to provide isolation and packaging of the illumination region 320 (discussed below). It will be understood that although the first encapsulation area 330 and the second encapsulation area 340 are shown as having a certain width, their width may be negligible relative to the dimensions of the electrode area 310 and the illumination area 320 in practice. In the case where the light-emitting region 320 emits light, the first package region 330 and the second package region 340 may become rather inconspicuous.
  • FIG. 3B schematically and exemplarily shows a cross-sectional view of the lighting assembly 300 shown in FIG. 3A taken along line A-A.
  • the light emitting region 320 includes a first electrode layer 322, an electroluminescent layer 324, and a second electrode layer 326 which are sequentially disposed in a direction away from the substrate 302.
  • Electroluminescent layer 324 can comprise an organic electroluminescent material, a quantum dot material, or any other suitable electroluminescent material.
  • the first electrode layer 322 is fabricated as an anode and the second electrode layer 326 is fabricated as a cathode.
  • the electroluminescent layer 324 comprises an organic electroluminescent material
  • the first electrode layer 322 may be made of a material such as transparent indium tin oxide (ITO), and the second electrode layer 326 may be made of good Made of conductive metal.
  • ITO transparent indium tin oxide
  • the light-emitting region 320 is configured to be of a bottom emission type, that is, light emitted from the light-emitting region 320 is emitted from the bottom surface of the substrate 302.
  • the light emitting region 320 may be configured in a top emission type, wherein the first electrode layer 322 may be made of metal, and the second electrode layer 326 may be made of a transparent conductive material.
  • the electroluminescent layer 324 includes an organic electroluminescent material
  • the light emitting region 320 may further include a hole injection layer disposed between the first electrode layer 322 and the electroluminescent layer 324, and hole transport. The layer and the electron transport layer disposed between the electroluminescent layer 324 and the second electrode layer 326.
  • the first electrode layer 322 is electrically connected to the first external electrode 312 in the electrode region 310 (not shown in FIG. 3B), and the second electrode layer 326 is electrically connected to the second external electrode 314 in the electrode region 310 (FIG. 3B Not shown).
  • the electrical connections can be provided using a variety of techniques known in the art.
  • the illumination assembly 300 includes a wire layer 327 disposed below the first electrode layer 322.
  • the first electrode layer 322 may be connected to the first external electrode in the electrode region 310 through a wire in the wire layer 327.
  • the second electrode layer 326 has a portion that extends to the wire layer 327 and is connected to the second external electrode in the electrode region 310 through a wire in the wire layer 327.
  • the insulating material 329 provides insulation between the extended portion of the second electrode layer 326 and the first electrode layer 322.
  • the lighting assembly 300 also includes a package structure 350 formed on the first package region 330, the light emitting region 320, and the second package region 340 to provide packaging for the light emitting region 320.
  • the package structure 350 can be formed by a cover plate package or a thin film package.
  • the package structure 350 may include a cover plate made of a material such as glass or metal over the light-emitting region 320 and a sealant connecting the cover plate and the package regions 330, 340.
  • package structure 350 can comprise a film formed from any suitable inorganic, organic or inorganic/organic composite encapsulating material.
  • the package structure 350 may even be integrally formed with the first package region 330 and the second package region 340.
  • the light emitting region 320 occupies a region of the first surface of the substrate 302 other than the first package region 330, the second package region 340, and the electrode region 310. This provides the largest possible illumination area.
  • FIG. 4 schematically illustrates a plan view of a lighting assembly 400 in accordance with one embodiment of the present invention.
  • the illumination assembly 400 includes a substrate 402, a plurality of electrode regions 410, and a light emitting region 420.
  • each electrode region 410 is shown to include a first outer electrode 412 and a second outer electrode 414 that are insulated from each other, although other electrode region configurations are possible.
  • the first electrode layer in the light emitting region 420 may include a plurality of individual sub-blocks (as indicated by the grid lines in FIG. 4), and the second electrode layer may be a continuous layer. This can be achieved by patterning the first electrode layer and is referred to as "pixelation.” Each sub-block forms one pixel and typically has a size of, for example, 0.5 mm x 0.5 mm. Pixelization of the illuminating region can avoid the problem of partial short circuit causing failure of the entire illuminating region. Alternatively, illuminating The second electrode layer in the region 420 may be pixelated into a plurality of sub-blocks, and the first electrode layer may be a continuous layer. Alternatively, the first electrode layer and the second electrode layer may each be pixelated into a plurality of sub-blocks.
  • sub-blocks of the electrode layer may be grouped into at least one block, as indicated by the crossed dashed lines in FIG.
  • the sub-blocks of the first and/or second electrode layers are grouped into 9 blocks.
  • Each sub-block within each block may be connected in parallel, in series, or in series-parallel.
  • each block may be powered via a respective one of the first external electrodes 412 in the electrode region 410.
  • This provides a relatively uniform current transfer path to each pixel and makes the power supply to each block individually controllable.
  • options for selectively illuminating one or more of the light-emitting regions 420 can be provided by means of, for example, an illumination drive circuit disposed in the socket, thereby enabling a variety of different applications. This is also true for the electrode zone configuration as shown in Figure 2D.
  • each block can be powered via a respective one of the second external electrodes 414 in the electrode region 410 such that power to each block is separately Controlled.
  • the plurality of sub-blocks of the first and second electrode layers are grouped into at least one block pair (ie, One electrode block - pairing of second electrode blocks), and each block pair is powered via a respective one of the first outer electrodes 412 and a second one of the second outer electrodes 414 such that the power supply to each block pair is individually controllable of.
  • 5A-5E schematically illustrate plan views of various variations of the layout of electrode regions 510 of illumination assembly 500, in accordance with one embodiment of the present invention.
  • the plurality of electrode regions 510 and the first and second external electrodes 512 and 514 of each of the electrode regions 510 are arranged such that a pattern formed by the plurality of electrode regions 510 is related to the first surface of the substrate 502.
  • the center is rotationally symmetrical. For example, after the substrate 502 is rotated 180 degrees clockwise or counterclockwise, the pattern formed by the plurality of electrode regions 510 coincides with the pattern before rotation. This can prevent the first outer electrode 512 and the second outer electrode 514 from being reversed when the lighting assembly 500 is mounted to an external circuit such as a lamp holder, since the orientation of the substrate 502 need not be considered when the lighting assembly 500 is mounted.
  • each electrode region 510 includes only one of the first outer electrode 512 and the second outer electrode 514, but the pattern formed by the electrode regions 510 is related to the first surface of the substrate 502. The center is still rotationally symmetrical.
  • Electrode zone layouts shown in Figures 5A-5E are exemplary and that other rotationally symmetric electrode zone layouts are possible.
  • FIG. 6 schematically illustrates a plan view of a lighting assembly 600 in accordance with one embodiment of the present invention.
  • the first surface of the substrate 602 has a light emitting region 620 in which the electrode regions 610 are disposed and a further region 660 in which additional external electrodes 662, 664 are disposed.
  • each electrode region 610 is shown to include a first outer electrode 612 and a second outer electrode 614 that are insulated from each other, although other electrode region configurations are possible.
  • region 660 does not necessarily surround illumination region 620.
  • the region 660 may be disposed only on one side of the light emitting region 620.
  • the outer electrodes 662, 664 can have the same form factor as the outer electrodes 612, 614 in the electrode region 610.
  • region 660 can include more or fewer external electrodes 612, 614.
  • the various electrode zone layouts shown in Figures 5A-5E can be applied to the lighting assembly 400 shown in Figure 4.
  • the substrate (and thus the illuminating region) and the electrode region can have other shapes, such as circular, triangular or any other desired shape.
  • a lighting device such as a lamp
  • the illumination device can include the illumination assembly described in any one of the preceding embodiments or a combination thereof.

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  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Manufacturing & Machinery (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Power Engineering (AREA)
  • Electroluminescent Light Sources (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

一种照明组件，其包括基板（202）、至少一个电极区（210）、以及发光区（220）。发光区（220）包围至少一个电极区（210）中的至少一个被包围电极区（210）。一种照明装置，其包括照明组件。

Description

照明组件和照明装置 技术领域
本发明涉及照明技术领域，具体来说涉及一种照明组件和照明装置。
背景技术
已经提出了其中使用电致发光器件(如有机发光二极管(OLED)或量子点发光二极管(QLED))作为光源的诸如显示器背光源和室内照明之类的照明面板。在基于例如OLED的照明面板中，OLED的由氧化铟锡(ITO)材料制成的透明电极具有差的导电性，并且将在电流传输路径上形成大的电压降(IR-drop)。这将导致OLED照明面板的亮度的不均匀性。
图1示意性地示出了一种现有技术照明面板100的平面图。照明面板100具有发光区102和围绕发光区102的数个条形外接电极104。这一定程度上改善了由于电致发光器件中的电极的差的导电性所致的电流分布的不均匀性。在具有更大面积的照明面板上，通常会采用更宽的条形外部电极，使得照明面板具有专用于外部电极的边界区，该边界区具有例如达4mm的宽度。
然而，仍然存在对于照明面板的改善的亮度均匀性的需求。并且，在照明面板上布置专用于外部电极的边界区限制了照明面板在例如“无边框”设计中的应用。
发明内容
本发明的实施例提供一种照明组件和包括该照明组件的照明装置，以针对上述问题中的一个或多个提供更多选项。
根据本发明的第一方面，提供了一种照明组件，包括：基板，具有第一表面；至少一个电极区，布置在所述第一表面上，每个电极区包括第一外部电极和第二外部电极中的至少一个使得所述第一表面被提供有至少一个第一外部电极和至少一个第二外部电极，所述第一外部电极和所述第二外部电极彼此绝缘；以及发光区，布置在所述第一表面上且包围所述至少一个电极区中的至少一个被包围电极区，所述 发光区包括在远离所述基板的方向上顺序布置的第一电极层、电致发光层和第二电极层，所述第一电极层电性连接所述第一外部电极，所述第二电极层电性连接所述第二外部电极。
在一些实施例中，所述的照明组件还包括：第一封装区，布置在所述第一表面上且位于所述至少一个被包围电极区与所述发光区之间；第二封装区，布置在所述第一表面上且包围所述发光区；以及封装结构，形成在所述第一封装区、所述发光区和所述第二封装区上以提供对所述发光区的封装。
在一些实施例中，所述发光区占据所述第一表面除了所述第一封装区、所述第二封装区和所述至少一个电极区之外的区域。
在一些实施例中，所述第一电极层包括多个单独的子块。
在一些实施例中，所述多个子块被分组成至少一个块，每个块经由所述至少一个第一外部电极中的相应一个供电使得对每个块的供电是单独可控的。
在一些实施例中，所述第二电极层包括多个单独的子块。
在一些实施例中，所述多个子块被分组成至少一个块，每个块经由所述至少一个第二外部电极中的相应一个供电使得对每个块的供电是单独可控的。
在一些实施例中，所述第一电极层和所述第二电极层每个均包括多个单独的子块。
在一些实施例中，第一和第二电极层的所述多个子块被分组成至少一个块对，每个块对经由所述至少一个第一外部电极中的相应一个和所述至少一个第二外部电极中的相应一个供电使得对每个块对的供电是单独可控的。
在一些实施例中，多个所述电极区均匀地分布在所述第一表面上。
在一些实施例中，多个所述电极区被布置使得由所述多个电极区形成的图案关于所述第一表面的中心是旋转对称的。
在一些实施例中，所述第一电极层为阳极，并且所述第二电极层为阴极。
在一些实施例中，所述电致发光层包括有机电致发光材料或者量子点材料。
根据本发明的第二方面，提供了一种照明装置，包括第一方面中 所述的照明组件。
根据在下文中所描述的实施例，本发明的这些和其它方面将是清楚明白的，并且将参考在下文中所描述的实施例而被阐明。
附图说明
在下面结合附图对于示例性实施例的描述中，本发明的更多细节、特征和优点被公开，在附图中：
图1示意性地示出了一种现有技术照明面板的平面图；
图2A示意性地示出了根据本发明一个实施例的照明组件的平面图；
图2B示意性地示出了图2A中所示的照明组件的底视图；
图2C示意性地示出了图2A中所示的照明组件中各电极区的布置的变型；
图2D示意性地示出了图2A中所示的照明组件中各电极区的布置的另一变型；
图3A示意性地示出了根据本发明一个实施例的照明组件的平面图；
图3B示意性且示例性地示出了图3A中所示的照明组件的沿线A-A所截取的截面图；
图4示意性地示出了根据本发明一个实施例的照明组件的平面图；
图5A-5E示意性地示出了根据本发明一个实施例的照明组件的电极区的布局的各种变型的平面图；以及
图6示意性地示出了根据本发明一个实施例的照明组件的平面图。
具体实施方式
现在，将参照其中表示本发明的示范性实施例的附图更完整地描述本发明。然而，本发明可以按很多不同的方式体现，不应解读为局限于这里所述的实施例。相反，提供这些实施例使得本公开是详尽和完整的，并且向本领域的技术人员完全传达本发明的范围。全文中，相似的参考数字指代相似的元素。
将理解的是，尽管术语第一、第二、第三等等在本文中可以用来描述各种元件、部件、区、层和/或部分，但是这些元件、部件、区、 层和/或部分不应当由这些术语限制。这些术语仅用来将一个元件、部件、区、层或部分与另一个区、层或部分相区分。因此，下面讨论的第一元件、部件、区、层或部分可以被称为第二元件、部件、区、层或部分而不偏离本发明的教导。
诸如“在…下面”、“在…之下”、“较下”、“在…下方”、“在…之上”、“较上”等等之类的空间相对术语在本文中可以为了便于描述而用来描述如图中所图示的一个元件或特征与另一个(些)元件或特征的关系。将理解的是，这些空间相对术语意图涵盖除了图中描绘的取向之外在使用或操作中的器件的不同取向。例如，如果翻转图中的器件，那么被描述为“在其他元件或特征之下”或“在其他元件或特征下面”或“在其他元件或特征下方”的元件将取向为“在其他元件或特征之上”。因此，示例性术语“在…之下”和“在…下方”可以涵盖在…之上和在…之下的取向两者。诸如“在…之前”或“在…前”和“在…之后”或“接着是”之类的术语可以类似地例如用来指示光穿过元件所依的次序。器件可以取向为其他方式(旋转90度或以其他取向)并且相应地解释本文中使用的空间相对描述符。另外，还将理解的是，当层被称为“在两个层之间”时，其可以是在该两个层之间的唯一的层，或者也可以存在一个或多个中间层。
本文中使用的术语仅出于描述特定实施例的目的并且不意图限制本发明。如本文中使用的，单数形式“一个”、“一”和“该”意图也包括复数形式，除非上下文清楚地另有指示。将进一步理解的是，术语“包括”和/或“包含”当在本说明书中使用时指定所述及特征、整体、步骤、操作、元件和/或部件的存在，但不排除一个或多个其他特征、整体、步骤、操作、元件、部件和/或其群组的存在或添加一个或多个其他特征、整体、步骤、操作、元件、部件和/或其群组。如本文中使用的，术语“和/或”包括相关联的列出项目中的一个或多个的任意和全部组合。
将理解的是，当元件或层被称为“在另一个元件或层上”、“连接到另一个元件或层”、“耦合到另一个元件或层”或“邻近另一个元件或层”时，其可以直接在另一个元件或层上、直接连接到另一个元件或层、直接耦合到另一个元件或层或者直接邻近另一个元件或层，或者可以存在中间元件或层。相反，当元件被称为“直接在另一个元 件或层上”、“直接连接到另一个元件或层”、“直接耦合到另一个元件或层”、“直接邻近另一个元件或层”时，没有中间元件或层存在。然而，在任何情况下“在…上”或“直接在…上”都不应当被解释为要求一个层完全覆盖下面的层。
本文中参考本发明的理想化实施例的示意性图示(以及中间结构)描述本发明的实施例。正因为如此，应预期例如作为制造技术和/或公差的结果而对于图示形状的变化。因此，本发明的实施例不应当被解释为限于本文中图示的区的特定形状，而应包括例如由于制造导致的形状偏差。因此，图中图示的区本质上是示意性的，并且其形状不意图图示器件的区的实际形状并且不意图限制本发明的范围。
除非另有定义，本文中使用的所有术语(包括技术术语和科学术语)具有与本发明所属领域的普通技术人员所通常理解的相同含义。将进一步理解的是，诸如那些在通常使用的字典中定义的之类的术语应当被解释为具有与其在相关领域和/或本说明书上下文中的含义相一致的含义，并且将不在理想化或过于正式的意义上进行解释，除非本文中明确地如此定义。
图2A示意性地示出了根据本发明一个实施例的照明组件200的平面图。
参照图2A，照明组件200包括基板202、多个电极区210、和发光区220。基板202具有例如为基板202的顶表面的第一表面。多个电极区210布置在第一表面上，并且每个电极区210包括彼此绝缘的第一外部电极212(由“+”指示)和第二外部电极214(由“-”指示)。发光区220布置在第一表面上且包围至少一个电极区210。在该示例中，发光区220被示出为包围所有电极区210。
在该实施例中，基板202可以由诸如玻璃或透明树脂之类的透明材料制成以提供透光率，因为基板202的与其中布置电极区210的第一表面相对的第二表面(底表面)通常被用作发光面。
图2B示意性地示出了图2A中所示的照明组件200的底视图。
参照图2B，各电极区210被示出为基板202上的黑色块。电极区210中的第一外部电极212和第二外部电极214(图2B中未示出)通常由不透明的金属材料制成以提供良好的导电性。虽然照明组件200遭受发光面积的一定损失，但是其被提供了改进的亮度均匀性，因为 现在各电极区210被布置在发光区220中并且因此提供到发光区220各个位置的更加均等的电流传输路径。均匀的电流分布可以进一步提供均匀的热分布，从而提供在照明组件中省略导热材料的可能性。这对于如图2A所示的其中多个电极区210被均匀地布置在发光区220中的实施例尤为如此。另外，照明组件200具有不明显的边界，因为现在在照明组件200的边缘处不存在包围发光区220的电极区。这提供了更多的设计选项，例如在其中要求照明面板被“无缝地”拼接的应用中。
图2C示意性地示出了图2A中所示的照明组件200中各电极区210的布置的变型。
参照图2C，位于基板202的***的各电极区210与图2A的布置相比现在被“向外”移动到基板202的边缘。在这种情况下，处于基板202的中心的电极区210被发光区220包围，而处于基板202的边缘的电极区210仅部分地被发光区220包围。例如，对于位于基板202的右上角的电极区210而言，发光区220仅被布置在其两个侧边处。
图2C中所示的照明组件200具有与图2A中所示的照明组件类似的优点。各电极区210提供到发光区220各个位置的相对均等的电流传输路径，并且在照明组件200的边缘处仍然不存在包围发光区220的电极区。
图2D示意性地示出了图2A中所示的照明组件中各电极区的布置的另一变型。
参照图2D，处于基板202中心的电极区210包括第一外部电极212和第二外部电极214两者，而其余电极区210每个仅包括第一外部电极212或者第二外部电极214。换言之，每个电极区210包括第一外部电极212和第二外部电极214中的至少一个。
其他实施例是可能的。例如，处于基板202中心的电极区210可以仅包括第一外部电极212或第二外部电极214。又例如，单个电极区210甚至可以包括多于一个第一外部电极212和/或多于一个第二外部电极214。在适当的情况下，第一外部电极212的数目可以或可以不等于第二外部电极214的数目，只要第一表面被提供有至少一个第一外部电极212和至少一个第二外部电极214即可。
图2D中所示的照明组件200具有与图2A中所示的照明组件类似 的优点。各电极区210提供到发光区220各个位置的相对均等的电流传输路径，并且在照明组件200的边缘处仍然不存在包围发光区220的电极区。
图3A示意性地示出了根据本发明一个实施例的照明组件300的平面图。
参照图3A，照明组件300包括基板302、电极区310和包围电极区310的发光区320。在该示例性实施例中，照明组件300仅包括一个电极区310，尽管更多数目的电极区是可能的。电极区310包括彼此绝缘的第一外部电极312和第二外部电极314。
与图2A中所示的照明组件200相比，照明组件300还包括布置在基板302的第一表面上且位于电极区310与发光区320之间第一封装区330、以及布置在第一表面上且包围发光区320的第二封装区340。第一封装区330和第二封装区340可以用于提供对发光区320的隔离和封装(下面讨论)。将理解的是，虽然第一封装区330和第二封装区340被示出为具有一定的宽度，但是在实践中它们的宽度相对于电极区310和发光区320的尺寸可以是可忽略的。在发光区320发光的情况下，第一封装区330和第二封装区340可以变得相当不明显。
图3B示意性且示例性地示出了图3A中所示的照明组件300的沿线A-A所截取的截面图。
参照图3B，发光区320包括在远离基板302的方向上顺序布置的第一电极层322、电致发光层324和第二电极层326。电致发光层324可以包括有机电致发光材料、量子点材料或任何其他适当的电致发光材料。通常，第一电极层322被制作为阳极，并且第二电极层326被制作为阴极。在其中电致发光层324包括有机电致发光材料的实施例中，第一电极层322可以由透明的氧化铟锡(ITO)之类的材料制成，并且第二电极层326可以由具有良好导电性的金属制成。在这种情况下，发光区320被配置成底发射类型，即发光区320所发射的光从基板302的底表面射出。然而，其他实施例是可能的。例如，发光区320可以被配置成顶发射类型，其中第一电极层322可以由金属制成，并且第二电极层326可以由透明导电材料制成。另外，在其中电致发光层324包括有机电致发光材料的实施例中，发光区320还可以包括布置于第一电极层322与电致发光层324之间的空穴注入层、空穴传输 层以及布置于电致发光层324与第二电极层326之间的电子传输层。
第一电极层322电性连接电极区310中的第一外部电极312(图3B中未示出)，并且第二电极层326电性连接电极区310中的第二外部电极314(图3B中未示出)。可以使用本领域已知的各种技术提供所述电连接。在图3B的示例中，照明组件300包括设置在第一电极层322下方的导线层327。第一电极层322可以通过导线层327中的导线连接到电极区310中的第一外部电极。第二电极层326具有延伸到导线层327的部分，并且通过导线层327中的导线连接到电极区310中的第二外部电极。绝缘材料329提供第二电极层326的延伸部分与第一电极层322之间的绝缘。
照明组件300还包括封装结构350，其形成在第一封装区330、发光区320和第二封装区340上以提供对发光区320的封装。如已知的，封装结构350可以通过盖板封装或者薄膜封装而形成。在盖板封装中，封装结构350可以包括覆盖在发光区320上方的由诸如玻璃或金属之类的材料制成的盖板和连接盖板与封装区330，340的密封胶。在薄膜封装中，封装结构350可以包括由任何适当的无机、有机或无机/有机复合封装材料形成的薄膜。在一些实施例中，封装结构350甚至可以与第一封装区330和第二封装区340整体形成。
如图3B所示，发光区320占据基板302的第一表面的除了第一封装区330、第二封装区340和电极区310之外的区域。这提供了尽可能大的发光面积。
图4示意性地示出了根据本发明一个实施例的照明组件400的平面图。
参照图4，照明组件400包括基板402、多个电极区410、和发光区420。在该示例性实施例中，每个电极区410被示出为包括彼此绝缘的第一外部电极412和第二外部电极414，尽管其他的电极区配置是可能的。
发光区420中的第一电极层可以包括多个单独的子块(如图4中的网格线所指示的)，并且第二电极层可以为连续的层。这可以通过图案化第一电极层来实现，并且被称为“像素化”。每个子块形成一个像素，并且典型地具有例如0.5mm×0.5mm的尺寸。发光区的像素化可以避免局部短路导致整个发光区的失效的问题。可替换地，发光 区420中的第二电极层可以被像素化成多个子块，并且第一电极层可以为连续的层。可替换地，第一电极层和第二电极层可以每个均被像素化成多个子块。
在一些示例中，电极层的子块可以被分组成至少一个块，如图4中交叉的虚线所指示的。在该图中，第一和/或第二电极层的子块被分组成9个块。每个块内的各子块可以是并联连接、串联连接或串-并联连接的。
在其中第一电极层被像素化为多个子块的实施例中，每个块可以经由电极区410中的相应一个第一外部电极412来供电。这提供了到各个像素的相对均等的电流传输路径，并且使得对每个块的供电是单独可控的。由此，可以借助于例如配置在灯座中的照明驱动电路来提供用于选择性地点亮发光区420中的一个或多个区域的选项，从而实现各种不同的应用。这对于如图2D中所示的电极区配置同样适用。
类似地，在其中第二电极层被像素化为多个子块的实施例中，每个块可以经由电极区410中的相应一个第二外部电极414来供电使得对每个块的供电是单独可控的。在其中第一电极层和第二电极层每个均被像素化为多个子块的实施例中，第一和第二电极层的所述多个子块被分组成至少一个块对(即，第一电极块-第二电极块的配对)，并且每个块对经由第一外部电极412中的相应一个和第二外部电极414中的相应一个供电使得对每个块对的供电是单独可控的。
图5A-5E示意性地示出了根据本发明一个实施例的照明组件500的电极区510的布局的各种变型的平面图。
如图5A所示，多个电极区510以及每个电极区510中的第一外部电极512和第二外部电极514被布置使得由多个电极区510形成的图案关于基板502的第一表面的中心是旋转对称的。例如，当基板502被顺时针或逆时针旋转180度之后，由多个电极区510形成的图案与旋转之前的图案重合。这可以防止在将照明组件500安装到例如灯座的外部电路时第一外部电极512和第二外部电极514被接反，因为现在在安装照明组件500时无需考虑基板502的取向。
图5B-5E示出了电极区510的布局的另外的变型。在图5B中所示的照明组件500中，基板502具有正方形形状，并且由多个电极区510形成的图案关于基板502的第一表面的中心是旋转对称的。在图5C中 所示的照明组件500中，由多个电极区510形成的图案关于基板502的第一表面的中心仍然是旋转对称的。在图5D中所示的照明组件500中，由多个电极区510形成的图案是图5B和5C中所示的图案的组合。在图5E中所示的照明组件500中，每个电极区510仅包括第一外部电极512和第二外部电极514之一，但是由这些电极区510形成的图案关于基板502的第一表面的中心仍然是旋转对称的。
将理解的是，图5A-5E中所示的电极区布局是示例性的，并且其他旋转对称的电极区布局是可能的。
图6示意性地示出了根据本发明一个实施例的照明组件600的平面图。
参照图6，基板602的第一表面具有其中布置电极区610的发光区620和其中布置另外的外部电极662，664的另外的区域660。这可以是有利的，因为照明组件600可以进一步被提供改进的亮度均匀性。在该示例性实施例中，每个电极区610被示出为包括彼此绝缘的第一外部电极612和第二外部电极614，尽管其他的电极区配置是可能的。
在一些实施例中，区域660不一定包围发光区620。例如，区域660可以仅布置在发光区620的一侧。在一些实施例中，外部电极662，664可以具有与电极区610中的外部电极612，614相同的形状因数。在一些实施例中，区域660可以包括更多或更少的外部电极612，614。
将理解的是，上面结合附图所描述的单独的实施例在适当的情况下可以被组合。例如，图5A-5E中所示的各种电极区布局可以应用于图4中所示的照明组件400。另外，基板(并且因而发光区)和电极区可以具有其他形状，例如圆形、三角形或任何其他期望的形状。
根据本发明的第二方面，提供了一种照明装置，例如灯。照明装置可以包括在前面实施例中任一个或其组合中描述的照明组件。
鉴于前面的描述并结合阅读附图，对前述本发明的示例性实施例的各种修改和改动对于相关领域的技术人员可以变得显而易见。任何和所有修改仍将落入本发明的非限制性和示例性实施例的范围内。此外，属于本发明的这些实施例所属领域的技术人员，在得益于前面的描述和相关附图所给出的教导后，将会想到在此描述的本发明的其他实施例。
因此，应当理解，本发明的实施例并不限于所公开的特定实施例， 并且修改和其他的实施例也意图被包含在所附权利要求书的范围内。尽管此处使用了特定术语，但是它们仅在通用和描述性意义上使用，而非为了限制的目的。

Claims (14)

  1. 一种照明组件，包括：
    基板，具有第一表面；
    至少一个电极区，布置在所述第一表面上，每个电极区包括第一外部电极和第二外部电极中的至少一个使得所述第一表面被提供有至少一个第一外部电极和至少一个第二外部电极，所述第一外部电极和所述第二外部电极彼此绝缘；以及
    发光区，布置在所述第一表面上且包围所述至少一个电极区中的至少一个被包围电极区，所述发光区包括在远离所述基板的方向上顺序布置的第一电极层、电致发光层和第二电极层，所述第一电极层电性连接所述第一外部电极，所述第二电极层电性连接所述第二外部电极。
  2. 如权利要求1所述的照明组件，还包括：
    第一封装区，布置在所述第一表面上且位于所述至少一个被包围电极区与所述发光区之间；
    第二封装区，布置在所述第一表面上且包围所述发光区；以及
    封装结构，形成在所述第一封装区、所述发光区和所述第二封装区上以提供对所述发光区的封装。
  3. 如权利要求2所述的照明组件，其中所述发光区占据所述第一表面除了所述第一封装区、所述第二封装区和所述至少一个电极区之外的区域。
  4. 如权利要求1所述的照明组件，其中所述第一电极层包括多个单独的子块。
  5. 如权利要求4所述的照明组件，其中所述多个子块被分组成至少一个块，每个块经由所述至少一个第一外部电极中的相应一个供电使得对每个块的供电是单独可控的。
  6. 如权利要求1所述的照明组件，其中所述第二电极层包括多个单独的子块。
  7. 如权利要求6所述的照明组件，其中所述多个子块被分组成至少一个块，每个块经由所述至少一个第二外部电极中的相应一个供电使得对每个块的供电是单独可控的。
  8. 如权利要求1所述的照明组件，其中所述第一电极层和所述第二电极层每个均包括多个单独的子块。
  9. 如权利要求8所述的照明组件，其中第一和第二电极层的所述多个子块被分组成至少一个块对，每个块对经由所述至少一个第一外部电极中的相应一个和所述至少一个第二外部电极中的相应一个供电使得对每个块对的供电是单独可控的。
  10. 如权利要求1所述的照明组件，其中多个所述电极区均匀地分布在所述第一表面上。
  11. 如权利要求1所述的照明组件，其中多个所述电极区被布置使得由所述多个电极区形成的图案关于所述第一表面的中心是旋转对称的。
  12. 如权利要求1所述的照明组件，其中所述第一电极层为阳极，并且所述第二电极层为阴极。
  13. 如前述权利要求中任一项所述的照明组件，其中所述电致发光层包括有机电致发光材料或者量子点材料。
  14. 一种照明装置，包括前述权利要求中任一项所述的照明组件。
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