WO2021051334A1 - 灯条、背光组件和显示装置 - Google Patents

灯条、背光组件和显示装置 Download PDF

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Publication number
WO2021051334A1
WO2021051334A1 PCT/CN2019/106598 CN2019106598W WO2021051334A1 WO 2021051334 A1 WO2021051334 A1 WO 2021051334A1 CN 2019106598 W CN2019106598 W CN 2019106598W WO 2021051334 A1 WO2021051334 A1 WO 2021051334A1
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WO
WIPO (PCT)
Prior art keywords
light
emitting unit
metal
substrate
terminal
Prior art date
Application number
PCT/CN2019/106598
Other languages
English (en)
French (fr)
Inventor
冷寿阳
李文洋
韩锐
佟泽源
崔栋
张志鹏
龙斌
张赞
翟跃
关冬
迟卫宁
王丰平
Original Assignee
京东方科技集团股份有限公司
北京京东方光电科技有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 京东方科技集团股份有限公司, 北京京东方光电科技有限公司 filed Critical 京东方科技集团股份有限公司
Priority to CN201980001739.5A priority Critical patent/CN113597528B/zh
Priority to US16/961,033 priority patent/US11608947B2/en
Priority to PCT/CN2019/106598 priority patent/WO2021051334A1/zh
Publication of WO2021051334A1 publication Critical patent/WO2021051334A1/zh

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S4/00—Lighting devices or systems using a string or strip of light sources
    • F21S4/20—Lighting devices or systems using a string or strip of light sources with light sources held by or within elongate supports
    • F21S4/22—Lighting devices or systems using a string or strip of light sources with light sources held by or within elongate supports flexible or deformable, e.g. into a curved shape
    • F21S4/24—Lighting devices or systems using a string or strip of light sources with light sources held by or within elongate supports flexible or deformable, e.g. into a curved shape of ribbon or tape form, e.g. LED tapes
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00—Printed circuits
    • H05K1/02—Details
    • H05K1/0277—Bendability or stretchability details
    • H05K1/028—Bending or folding regions of flexible printed circuits
    • H05K1/0281—Reinforcement details thereof
    • 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
    • F21V23/001—Arrangement of electric circuit elements in or on lighting devices the elements being electrical wires or cables
    • F21V23/002—Arrangements of cables or conductors inside a lighting device, e.g. means for guiding along parts of the housing or in a pivoting arm
    • 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
    • F21V33/00—Structural combinations of lighting devices with other articles, not otherwise provided for
    • F21V33/0004—Personal or domestic articles
    • F21V33/0052—Audio or video equipment, e.g. televisions, telephones, cameras or computers; Remote control devices therefor
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00—Printed circuits
    • H05K1/02—Details
    • H05K1/11—Printed elements for providing electric connections to or between printed circuits
    • H05K1/111—Pads for surface mounting, e.g. lay-out
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00—Printed circuits
    • H05K1/18—Printed circuits structurally associated with non-printed electric components
    • H05K1/181—Printed circuits structurally associated with non-printed electric components associated with surface mounted components
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2103/00—Elongate light sources, e.g. fluorescent tubes
    • F21Y2103/10—Elongate light sources, e.g. fluorescent tubes comprising a linear array of point-like light-generating elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00—Printed circuits
    • H05K1/02—Details
    • H05K1/0201—Thermal arrangements, e.g. for cooling, heating or preventing overheating
    • H05K1/0203—Cooling of mounted components
    • H05K1/0204—Cooling of mounted components using means for thermal conduction connection in the thickness direction of the substrate
    • H05K1/0206—Cooling of mounted components using means for thermal conduction connection in the thickness direction of the substrate by printed thermal vias
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/09—Shape and layout
    • H05K2201/09209—Shape and layout details of conductors
    • H05K2201/09654—Shape and layout details of conductors covering at least two types of conductors provided for in H05K2201/09218 - H05K2201/095
    • H05K2201/09709—Staggered pads, lands or terminals; Parallel conductors in different planes
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/10—Details of components or other objects attached to or integrated in a printed circuit board
    • H05K2201/10007—Types of components
    • H05K2201/10106—Light emitting diode [LED]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product

Definitions

  • the present disclosure relates to the field of display technology, in particular to a light bar, a backlight assembly and a display device.
  • the backlight assembly includes a flexible circuit board and a light bar on which a light emitting unit such as an LED (Light Emitting Diode, light emitting diode) is provided.
  • the light-emitting unit arranged on the light bar is controlled by the flexible circuit board, so that the light-emitting unit emits light.
  • a light bar including: a substrate; a first metal layer disposed on a first side of the substrate, the first metal layer including a plurality of first metal segments, so The plurality of first metal fragments are arranged at intervals along the length direction of the light bar; a second metal layer is arranged on the second side of the substrate, and the second metal layer includes a plurality of second metal fragments.
  • a plurality of second metal segments are arranged at intervals along the length direction of the light bar; wherein the projection of the interval between two adjacent first metal segments on the substrate falls into the projection of the second metal segment on the substrate In the projection on the substrate, the projection of the interval between two adjacent second metal segments on the substrate falls within the projection of the first metal segment on the substrate.
  • the light bar includes a plurality of light-emitting units disposed on a side of the first metal layer away from the substrate, and the light-emitting units extend along the length of the light bar.
  • the projection of each light-emitting unit on the substrate is partially overlapped with the projection of two adjacent first metal segments on the substrate, and the first electrode of each light-emitting unit is arranged at intervals on the substrate.
  • One metal segment of the two first metal segments is electrically connected, and the second electrode of each light-emitting unit is electrically connected to the other metal segment of the two adjacent first metal segments.
  • the multiple light-emitting units include multiple light-emitting unit groups, the multiple light-emitting unit groups are arranged at intervals along the length direction of the light bar, and each light-emitting unit group includes multiple light-emitting unit subgroups, The plurality of light emitting unit subgroups are arranged at intervals along the length direction of the light bar, each light emitting unit subgroup includes at least two light emitting units, and the at least two light emitting units are arranged at intervals along the length direction of the light bar; The at least two light-emitting units in each light-emitting unit subgroup are connected in series, and different light-emitting unit subgroups are connected in parallel.
  • the first metal segment electrically connected to the first electrode of only one light-emitting unit is used as the first terminal of the light-emitting unit subgroup, and only one The first metal segment electrically connected to the second electrode of the light-emitting unit serves as the second terminal of the light-emitting unit subgroup.
  • the light bar further includes: a plurality of first metal traces arranged on the first side of the substrate, and the plurality of first metal traces correspond to the plurality of light-emitting unit groups one-to-one; Each first metal wire is electrically connected to the first terminal of each light-emitting unit subgroup in the corresponding light-emitting unit group; a plurality of second metal wires are arranged on the second side of the substrate, and the plurality of second metal wires are arranged on the second side of the substrate.
  • the second metal traces are in one-to-one correspondence with the plurality of light-emitting unit subgroups, and each second metal trace is electrically connected to the third terminal of the corresponding light-emitting unit subgroup, wherein the third terminal of the light-emitting unit subgroup Is a second metal segment electrically connected to the second terminal of the light-emitting unit subgroup; wherein, a first voltage is applied to the plurality of first metal traces, and a second voltage is applied to the plurality of second metal traces. Voltage, the first voltage is different from the second voltage.
  • the light bar further includes: a plurality of first via holes, each first via hole penetrates a first metal segment, the substrate and a second metal segment, wherein the first via hole penetrates The first metal segment is not used as the second terminal of any one of the plurality of light-emitting unit subgroups, and the second metal segment through which the first via hole penetrates is not used as the second terminal of the plurality of light-emitting unit subgroups.
  • the light bar further includes: a plurality of second via holes, each second via hole penetrates a first metal segment, the substrate and a second metal segment, wherein the second via hole penetrates
  • the first metal segment is the second terminal of one light-emitting unit sub-group in the plurality of light-emitting unit sub-groups
  • the second metal segment penetrated by the second via hole is one of the light-emitting unit sub-groups that emits light.
  • the second terminal of the light-emitting unit sub-group passes through at least one second via hole that penetrates the second terminal of the light-emitting unit sub-group, the substrate, and the third terminal of the light-emitting unit sub-group It is electrically connected to the third terminal of the light-emitting unit subgroup.
  • the projection of the interval between two adjacent second metal segments on the substrate does not overlap with the projection of the light-emitting unit on the substrate.
  • the material of the substrate is a flexible insulating material.
  • the material of the first metal segment and the second metal segment includes copper.
  • the light-emitting unit is an LED circuit.
  • a backlight assembly including the light bar as described in any of the above embodiments.
  • a display device including the backlight assembly as described in any of the above embodiments.
  • Fig. 1 is a schematic structural diagram of a light bar according to an embodiment of the present disclosure
  • Fig. 2 is a schematic top view of the light bar shown in Fig. 1;
  • FIG. 3 is a schematic structural diagram of a light bar according to another embodiment of the present disclosure.
  • Figure 4 is a schematic structural diagram of a light bar according to another embodiment of the present disclosure.
  • Fig. 5 is a partial enlarged schematic diagram of the light bar shown in Fig. 4;
  • Fig. 6 is a schematic bottom view of the light bar shown in Fig. 5;
  • Fig. 7 is a schematic diagram of electrical connections of a subgroup of light-emitting units according to an embodiment of the present disclosure
  • Fig. 8 is a schematic top view of a light bar according to another embodiment of the present disclosure.
  • a plurality of metal segments are arranged at intervals along the length direction of the light bar on both sides of the substrate in the light bar.
  • the light-emitting unit On one side of the substrate, the light-emitting unit is electrically connected to two adjacent metal segments. Since there is a gap between the two metal segments, the light-emitting device is effectively prevented from being short-circuited.
  • a substrate is provided in the light bar.
  • the first side of the substrate is provided with a first metal layer
  • the second side of the substrate is provided with a second metal layer.
  • a light emitting unit is provided on the first metal layer.
  • the first metal layer is divided into a plurality of first metal segments, and each first metal segment is arranged at intervals along the length direction of the light bar.
  • the second metal layer is divided into a plurality of second metal segments, and each second metal segment is arranged at intervals along the length direction of the light bar. Therefore, by applying the first voltage to the corresponding first metal segment, and the second voltage to the corresponding second metal segment, so that the light-emitting unit can work normally.
  • the present disclosure proposes a solution to effectively avoid the breakage of the light bar.
  • Fig. 1 is a schematic structural diagram of a light bar according to an embodiment of the present disclosure. As shown in FIG. 1, the light bar includes a substrate 10, a first metal layer 11 and a second metal layer 12.
  • the first metal layer 11 is provided on the first side of the substrate 10.
  • the first metal layer 11 includes a plurality of first metal segments 111.
  • the plurality of first metal segments 111 are arranged at intervals along the length direction of the light bar 10.
  • the second metal layer 12 is provided on the second side of the substrate.
  • the second metal layer 12 includes a plurality of second metal segments 121.
  • the plurality of second metal segments 121 are arranged at intervals along the length direction of the light bar.
  • the material of the substrate is a flexible insulating material.
  • PI Polymide, polyimide
  • other materials with flexible insulation properties are possible.
  • the material of the first metal segment and the second metal segment includes copper, or other suitable metal materials.
  • Fig. 2 is a schematic top view of the light bar shown in Fig. 1.
  • the projection of the interval 112 between two adjacent first metal segments 111 on the substrate falls within the projection of the second metal segment 112 on the substrate 10.
  • the projection of the interval 122 between two adjacent second metal segments 121 on the substrate 10 falls within the projection of the first metal segment 111 on the substrate 10.
  • the projection of the interval between two adjacent first metal segments on one side of the substrate on the substrate is avoided.
  • the projection of the space between two adjacent second metal segments on the other side of the substrate overlaps the substrate. This ensures that the intensity of the light bar will not decrease in any area, effectively reducing the possibility of the light bar breaking.
  • Fig. 3 is a schematic structural diagram of a light bar according to another embodiment of the present disclosure.
  • the light bar includes a plurality of light emitting units 23.
  • a plurality of light emitting units 23 are arranged on the side of the first metal layer 11 away from the substrate 10.
  • a plurality of light emitting units 23 are arranged at intervals along the length direction of the light bar.
  • the projection of each light-emitting unit 23 on the substrate 10 partially overlaps the projection of two adjacent first metal segments 111 on the substrate 10.
  • the first electrode of each light-emitting unit 23 is electrically connected to one of the two adjacent first metal segments, and the second electrode of each light-emitting unit 23 is electrically connected to the other of the two adjacent first metal segments.
  • the metal fragments are electrically connected.
  • the light-emitting unit is an LED circuit.
  • the light-emitting unit is an LED lamp bead.
  • the multiple light-emitting units in the light bar include multiple light-emitting unit groups.
  • the multiple light-emitting unit groups are arranged at intervals along the length direction of the light bar.
  • Each light-emitting unit group includes a plurality of light-emitting unit subgroups, and the multiple light-emitting unit subgroups are arranged at intervals along the length direction of the light bar.
  • Each light-emitting unit subgroup includes at least two light-emitting units, and the at least two light-emitting units are arranged at intervals along the length direction of the light bar.
  • Fig. 4 is a schematic structural diagram of a light bar according to another embodiment of the present disclosure.
  • the light bar includes two light-emitting unit groups 21 and 22.
  • the light-emitting unit group 21 includes three light-emitting unit subgroups 211, 212, and 213, and the light-emitting unit group 22 includes three light-emitting unit subgroups 214, 215, and 216.
  • Each light-emitting unit subgroup includes at least two light-emitting units 23 connected in series.
  • FIG. 5 is a partial enlarged schematic diagram of the light bar shown in Fig. 4. As an example, FIG. 5 shows a specific structure of the light-emitting unit subgroup 211.
  • the light-emitting unit subgroup 211 includes 7 light-emitting units 231-237.
  • the projection of each light-emitting unit on the substrate 10 partially overlaps the projection of two adjacent first metal segments on the substrate, and the first electrode of each light-emitting unit overlaps with one of the two adjacent first metal segments.
  • the segments are electrically connected, and the second electrode of each light-emitting unit is electrically connected to the other metal segment of the two adjacent first metal segments.
  • the first electrode of the light emitting unit 231 is electrically connected to the adjacent first metal segment 241, and the second electrode of the light emitting unit 231 is electrically connected to the adjacent first metal segment 242.
  • the first electrode of the light emitting unit 232 is electrically connected to the adjacent first metal segment 242, and the second electrode of the light emitting unit 232 is electrically connected to the adjacent first metal segment 243.
  • the first electrode of the light emitting unit 233 is electrically connected to the adjacent first metal segment 243, and the second electrode of the light emitting unit 233 is electrically connected to the adjacent first metal segment 244.
  • the first electrode of the light emitting unit 234 is electrically connected to the adjacent first metal segment 244, and the second electrode of the light emitting unit 234 is electrically connected to the adjacent first metal segment 245.
  • the first electrode of the light emitting unit 235 is electrically connected to the adjacent first metal segment 245, and the second electrode of the light emitting unit 235 is electrically connected to the adjacent first metal segment 246.
  • the first electrode of the light emitting unit 236 is electrically connected to the adjacent first metal segment 246, and the second electrode of the light emitting unit 236 is electrically connected to the adjacent first metal segment 247.
  • the first electrode of the light emitting unit 237 is electrically connected to the adjacent first metal segment 247, and the second electrode of the light emitting unit 237 is electrically connected to the adjacent first metal segment 248.
  • the first metal segment 241 that is only electrically connected to the first electrode of the light-emitting unit 231 is used as the first terminal of the light-emitting unit subgroup 211
  • the first metal segment 248 that is only electrically connected to the second electrode of the light-emitting unit 237 is used as the first terminal.
  • the second terminal of the light-emitting unit subgroup 211 Since the light-emitting units 231-237 are connected in series, a positive voltage is applied to the first terminal of the light-emitting unit subgroup 211 and a negative voltage is applied to the second terminal of the light-emitting unit subgroup 211, so that the light-emitting unit subgroup 211 connected in series is normal the work.
  • the light bar further includes a plurality of first metal traces, which are arranged on the first side of the substrate.
  • the plurality of first metal traces correspond to the plurality of light-emitting unit groups one-to-one. Each first metal trace is electrically connected to the first terminal of each light-emitting unit subgroup in the corresponding light-emitting unit group.
  • the light bar also includes a plurality of second metal traces, which are arranged on the second side of the substrate. The plurality of second metal traces are in one-to-one correspondence with the plurality of light-emitting unit subgroups, and each second metal trace is electrically connected to the third terminal of the corresponding light-emitting unit subgroup.
  • the third terminal of the light-emitting unit sub-group is a second metal segment electrically connected to the second terminal of the light-emitting unit sub-group.
  • the first voltage is applied to the plurality of first metal traces, and the second voltage is applied to the plurality of second metal traces.
  • the first voltage is different from the second voltage, thereby realizing a closed loop.
  • first metal traces namely, first metal traces 261 and 262 are provided on the first side of the substrate 10.
  • the first metal wiring 261 corresponds to the light-emitting unit group 21.
  • the first metal trace 261 is electrically connected to the first terminal of the light-emitting unit subgroup 211 in the light-emitting unit group 21.
  • the second terminal of the light-emitting unit sub-group 211 is electrically connected to the third terminal of the light-emitting unit sub-group 211 provided on the second side of the substrate 10.
  • Fig. 6 is a schematic bottom view of the light bar shown in Fig. 5.
  • second metal traces that is, second metal traces 271-276 are provided on the second side of the substrate 10.
  • the second metal trace 271 is electrically connected to the second metal segment 258 serving as the third terminal of the light-emitting unit subgroup 211.
  • the light bar further includes a plurality of first via holes.
  • Each first via hole penetrates a first metal segment, a substrate and a second metal segment.
  • the first metal segment penetrating through the first via hole is not used as the second terminal of any one of the multiple light emitting unit subgroups, and the second metal segment penetrating through the first via hole is not used as the second terminal of the multiple light emitting unit subgroups.
  • the first metal segments 241-247 are not used as the second terminals of the light-emitting unit subgroup 211.
  • the second metal segments 251-257 do not serve as the third terminal of the light-emitting unit subgroup 211. Therefore, a plurality of first vias 281 can be provided on the first metal segments 241-247 and the second metal segments 251-257 to achieve heat dissipation.
  • the light bar further includes a plurality of second via holes.
  • Each second via hole penetrates a first metal segment, a substrate and a second metal segment.
  • the first metal segment penetrated by the second via hole is the second terminal of one of the plurality of light emitting unit subgroups
  • the second metal segment penetrated by the second via hole is the second terminal of one of the plurality of light emitting unit subgroups.
  • the first metal segment 248 serves as the second terminal of the light-emitting unit subgroup 211.
  • the second metal segment 258 serves as the third terminal of the light-emitting unit subgroup 211. Therefore, a plurality of second via holes 282 can be provided on the first metal segment 248 and the second metal segment 258 so as to realize electrical connection between the second terminal and the third terminal of the light-emitting unit subgroup 211 through the second via hole 282.
  • Fig. 7 is a schematic diagram of electrical connections of a subgroup of light-emitting units according to an embodiment of the present disclosure.
  • each light emitting unit subgroup includes 3 light emitting unit subgroups, and a first metal wiring 261, 262.
  • second metal traces 271-276 are provided on the first side of the substrate 10.
  • the first metal traces 261 are respectively electrically connected to the first terminals in the light-emitting unit subgroups 211-213, and the second terminals of the light-emitting unit subgroups 211 are connected to the light-emitting devices on the second side of the substrate 10 through corresponding second via holes.
  • the third terminal of the unit subgroup 211 is electrically connected. Since the third terminal of the light-emitting unit sub-group 211 is electrically connected to the second metal wiring 271, the light-emitting units connected in series in the light-emitting unit sub-group 211 can work normally.
  • the second terminal of the light-emitting unit sub-group 212 is electrically connected to the third terminal of the light-emitting unit sub-group 212 provided on the second side of the substrate 10 through a corresponding second via hole. Since the third terminal of the light-emitting unit sub-group 212 is electrically connected to the second metal trace 272, the light-emitting units connected in series in the light-emitting unit sub-group 212 can work normally.
  • the second terminal of the light-emitting unit subgroup 213 is electrically connected to the third terminal of the light-emitting unit subgroup 213 provided on the second side of the substrate 10 through a corresponding second via hole. Since the third terminal of the light-emitting unit sub-group 213 is electrically connected to the second metal wiring 273, the light-emitting units connected in series in the light-emitting unit sub-group 213 can work normally.
  • the second metal traces 262 are respectively electrically connected to the first terminals in the light-emitting unit subgroups 214-216, and the second terminals of the light-emitting unit subgroups 214 are connected to the light-emitting devices on the second side of the substrate 10 through corresponding second via holes.
  • the third terminal of the unit subgroup 214 is electrically connected. Since the third terminal of the light-emitting unit sub-group 214 is electrically connected to the second metal wiring 274, the light-emitting units connected in series in the light-emitting unit sub-group 214 can work normally.
  • the second terminal of the light-emitting unit subgroup 215 is electrically connected to the third terminal of the light-emitting unit subgroup 215 provided on the second side of the substrate 10 through a corresponding via hole. Since the third terminal of the light-emitting unit sub-group 215 is electrically connected to the second metal wiring 275, the light-emitting units connected in series in the light-emitting unit sub-group 215 can work normally.
  • the second terminal of the light-emitting unit subgroup 216 is electrically connected to the third terminal of the light-emitting unit subgroup 216 provided on the second side of the substrate 10 through a corresponding via hole. Since the third terminal of the light-emitting unit sub-group 216 is electrically connected to the second metal trace 276, the light-emitting units connected in series in the light-emitting unit sub-group 216 can work normally.
  • each light-emitting unit subgroup is connected in series.
  • the subgroups of light-emitting units are connected in parallel. Therefore, the light-emitting unit in the corresponding area of the light bar can be effectively selected to emit light.
  • FIG. 8 is a schematic top view of a light bar according to another embodiment of the present disclosure.
  • FIG. 8 is a perspective view of the light bar.
  • the projection of the interval 112 between two adjacent first metal segments 111 on the substrate falls within the projection of the second metal segment 112 on the substrate 10.
  • the projection of the interval 122 between two adjacent second metal segments 121 on the substrate 10 falls within the projection of the first metal segment 111 on the substrate 10.
  • the projection of the light-emitting unit 23 on the substrate 10 partially overlaps the projection of the two adjacent first metal segments on the substrate 10.
  • the projection of the interval between two adjacent second metal segments 121 on the substrate does not overlap with the projection of the light emitting unit 23 on the substrate.
  • FIG. 8 does not show the via holes penetrating the substrate, the first metal segment, and the second metal segment.
  • the light bar provided by the above-mentioned embodiment of the present disclosure, by adjusting the position of the interval between adjacent metal segments, while effectively avoiding the short circuit of the light-emitting device, it can also ensure that the intensity of the light bar in any area will not decrease, which is effective Reduce the possibility of breakage of the light bar.
  • the present disclosure also provides a backlight assembly.
  • the background component may include the light bar provided in any of the embodiments in FIGS. 1-5.
  • the present disclosure also provides a display device, which may include the display panel provided in any of the above-mentioned embodiments.
  • the display device can be any product or component with a display function, such as a display, a mobile phone, a tablet computer, a television, a notebook computer, a digital photo frame, a navigator, and so on.
  • the display device provided by the present disclosure is used as a vehicle-mounted display device. Since the vehicle-mounted display device can effectively prevent the light bar from breaking due to external forces, it can effectively improve driving safety.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Multimedia (AREA)
  • Planar Illumination Modules (AREA)
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Abstract

一种灯条、背光组件和显示显示装置。灯条包括基板（10）；第一金属层（11），设置在基板（10）的第一侧，第一金属层（11）包括多个第一金属片段（111），多个第一金属片段（111）沿灯条的长度方向间隔设置；第二金属层（12），设置在基板（10）的第二侧，第二金属层（12）中包括多个第二金属片段（121），多个第二金属片段（121）沿灯条的长度方向间隔设置；其中，相邻的两个第一金属片段（111）之间的间隔在基板（10）上的投影落入第二金属片段（121）在基板（10）上的投影内，相邻的两个第二金属片段（121）之间的间隔在基板（10）上的投影落入第一金属片段（111）在基板（10）上的投影内。其能够有效降低灯条发生断裂的可能性。

Description

灯条、背光组件和显示装置 技术领域
本公开涉及显示技术领域，特别涉及一种灯条、背光组件和显示装置。
背景技术
在背光组件的相关技术中，背光组件包括通过柔性线路板和灯条，灯条上设置有诸如LED(Light Emitting Diode，发光二极管)的发光单元。通过柔性线路板对设置在灯条上的发光单元进行控制，以便发光单元进行发光。
发明内容
根据本公开实施例的第一方面，提供一种灯条，包括：基板；第一金属层，设置在所述基板的第一侧，所述第一金属层包括多个第一金属片段，所述多个第一金属片段沿所述灯条的长度方向间隔设置；第二金属层，设置在所述基板的第二侧，所述第二金属层中包括多个第二金属片段，所述多个第二金属片段沿所述灯条的长度方向间隔设置；其中，相邻的两个第一金属片段之间的间隔在所述基板上的投影落入所述第二金属片段在所述基板上的投影内，相邻的两个第二金属片段之间的间隔在所述基板上的投影落入所述第一金属片段在所述基板上的投影内。
在一些实施例中，灯条包括多个发光单元，所述多个发光单元设置在所述第一金属层的远离所述基板的一侧，所述多个发光单元沿所述灯条的长度方向间隔设置，每个发光单元在所述基板上的投影与相邻的两个第一金属片段在所述基板上的投影部分重叠，所述每个发光单元的第一电极与所述相邻的两个第一金属片段中的一个金属片段电连接，所述每个发光单元的第二电极与所述相邻的两个第一金属片段中的另一个金属片段电连接。
在一些实施例中，所述多个发光单元包括多个发光单元组，所述多个发光单元组沿所述灯条的长度方向间隔设置，每个发光单元组包括多个发光单元子组，所述多个发光单元子组沿所述灯条的长度方向间隔设置，每个发光单元子组包括至少两个发光单元，所述至少两个发光单元沿所述灯条的长度方向间隔设置；所述每个发光单元子组中的所述至少两个发光单元串联连接，不同的发光单元子组并联连接。
在一些实施例中，在所述每个发光单元子组中，将仅与一个发光单元的第一电极 电连接的第一金属片段作为所述发光单元子组的第一端子，将仅与一个发光单元的第二电极电连接的第一金属片段作为所述发光单元子组的第二端子。
在一些实施例中，灯条还包括：多个第一金属走线，设置在所述基板的第一侧，所述多个第一金属走线与所述多个发光单元组一一对应，每个第一金属走线与对应的发光单元组中的每个发光单元子组的第一端子电连接；多个第二金属走线，设置在所述基板的第二侧，所述多个第二金属走线与所述多个发光单元子组一一对应，每个第二金属走线与对应的发光单元子组的第三端子电连接，其中所述发光单元子组的第三端子为与所述发光单元子组的第二端子电连接的第二金属片段；其中，给所述多个第一金属走线施加第一电压，给所述多个第二金属走线施加第二电压，所述第一电压与所述第二电压不同。
在一些实施例中，灯条还包括：多个第一过孔，每个第一过孔贯穿一个第一金属片段、所述基板和一个第二金属片段，其中所述第一过孔贯穿的第一金属片段不作为所述多个发光单元子组中的任一发光单元子组的第二端子，所述第一过孔贯穿的第二金属片段不作为所述多个发光单元子组中的任一个发光单元子组的第三端子。
在一些实施例中，灯条还包括：多个第二过孔，每个第二过孔贯穿一个第一金属片段、所述基板和一个第二金属片段，其中所述第二过孔贯穿的第一金属片段为所述多个发光单元子组中的一个发光单元子组的第二端子，所述第二过孔贯穿的第二金属片段为所述多个发光单元子组中的一个发光单元子组的第三端子。
在一些实施例中，所述发光单元子组的第二端子通过贯穿所述发光单元子组的第二端子、所述基板和所述发光单元子组的第三端子的至少一个第二过孔与所述发光单元子组的第三端子电连接。
在一些实施例中，相邻的两个第二金属片段之间的间隔在所述基板上的投影与所述发光单元在所述基板上的投影没有重叠。
在一些实施例中，所述基板的材料为柔性绝缘材料。
在一些实施例中，所述第一金属片段和所述第二金属片段的材料包括铜。
在一些实施例中，所述发光单元为LED电路。
根据本公开实施例的第二方面，提供一种背光组件，包括如上述任一实施例所述的灯条。
根据本公开实施例的第三方面，提供一种显示装置，包括如上述任一实施例所述的背光组件。
通过以下参照附图对本公开的示例性实施例的详细描述，本公开的其它特征及其优点将会变得清楚。
附图说明
构成说明书的一部分的附图描述了本公开的实施例，并且连同说明书一起用于解释本公开的原理。
参照附图，根据下面的详细描述，可以更加清楚地理解本公开，其中：
图1是根据本公开一个实施例的灯条的结构示意图；
图2是图1所示灯条的俯视示意图；
图3时根据本公开另一实施例的灯条的结构示意图；
图4是根据本公开另一个实施例的灯条的结构示意图；
图5是图4所示灯条的局部放大示意图；
图6是图5所示灯条的仰视示意图；
图7是根据本公开一个实施例的发光单元子组的电连接示意图；
图8是根据本公开又一个实施例的灯条的俯视示意图。
应当明白，附图中所示出的各个部分的尺寸并不是按照实际的比例关系绘制的。此外，相同或类似的参考标号表示相同或类似的构件。
具体实施方式
现在将参照附图来详细描述本公开的各种示例性实施例。对示例性实施例的描述仅仅是说明性的，决不作为对本公开及其应用或使用的任何限制。本公开可以以许多不同的形式实现，不限于这里所述的实施例。提供这些实施例是为了使本公开透彻且完整，并且向本领域技术人员充分表达本公开的范围。应注意到：除非另外具体说明，否则在这些实施例中阐述的部件和步骤的相对布置、材料的组分和数值应被解释为仅仅是示例性的，而不是作为限制。
本公开中使用的“第一”、“第二”以及类似的词语并不表示任何顺序、数量或者重要性，而只是用来区分不同的部分。“包括”或者“包含”等类似的词语意指在该词前的要素涵盖在该词后列举的要素，并不排除也涵盖其他要素的可能。
本公开使用的所有术语(包括技术术语或者科学术语)与本公开所属领域的普通技术人员理解的含义相同，除非另外特别定义。还应当理解，在诸如通用字典中定义 的术语应当被解释为具有与它们在相关技术的上下文中的含义相一致的含义，而不应用理想化或极度形式化的意义来解释，除非这里明确地这样定义。
对于相关领域普通技术人员已知的技术、方法和设备可能不作详细讨论，但在适当情况下，所述技术、方法和设备应当被视为说明书的一部分。
在相关技术中，在灯条中的基板两侧分别沿灯条的长度方向间隔设置多个金属片段。在基板的一侧，发光单元会与两个相邻的金属片段电连接。由于这两个金属片段之间设有间隔，因此有效避免了发光装置发生短路。
在相关技术中，在灯条中设有基板。基板的第一侧设有第一金属层，基板的第二侧设有第二金属层。在第一金属层上设置发光单元。为了避免发光单元之间发生短路，将第一金属层划分为多个第一金属片段，各第一金属片段沿灯条的长度方向间隔设置。此外，将第二金属层划分为多个第二金属片段，各第二金属片段沿灯条的长度方向间隔设置。由此通过给相应的第一金属片段施加第一电压，给相应的第二金属片段施加第二电压，以便使发光单元正常工作。
发明人通过研究发现，设置在基板第一侧的两个相邻的第一金属片段之间的间隔在基板上的第一投影，通常会与设置在基板第二侧的两个相邻的金属片段之间的间隔在基板上的第二投影重叠。由于第一投影和第二投影重叠，导致灯条在该部分区域的厚度较薄，强度降低。在受到外力作用的情况下，灯条在该区域容易发生断裂。
据此，本公开提出一种有效避免灯条发生断裂的方案。
图1是根据本公开一个实施例的灯条的结构示意图。如图1所示，灯条包括基板10、第一金属层11和第二金属层12。
第一金属层11设置在基板10的第一侧。第一金属层11包括多个第一金属片段111。多个第一金属片段111沿灯条10的长度方向间隔设置。第二金属层12设置在基板的第二侧。第二金属层12中包括多个第二金属片段121。多个第二金属片段121沿灯条的长度方向间隔设置。
在一些实施例中，基板的材料为柔性绝缘材料。例如PI(Polymide，聚酰亚胺)材料或其它具有柔性绝缘特性的材料。
在一些实施例中，第一金属片段和第二金属片段的材料包括铜，或者其它合适的金属材料。
图2是图1所示灯条的俯视示意图。
如图2所示，相邻的两个第一金属片段111之间的间隔112在基板上的投影落入 第二金属片段112在基板10上的投影内。相邻的两个第二金属片段121之间的间隔122在基板10上的投影落入第一金属片段111在基板10上的投影内。
在本公开上述实施例提供的灯条中，通过调整相邻金属片段之间的间隔的位置，从而避免位于基板一侧的两个相邻的第一金属片段之间的间隔在基板上的投影与位于基板另一侧的两个相邻的第二金属片段之间的间隔在基板上的投影重叠。由此确保灯条在任一区域的强度不会降低，有效降低了灯条发生断裂的可能性。
图3时根据本公开另一实施例的灯条的结构示意图。
如图3所示，灯条包括多个发光单元23。多个发光单元23设置在第一金属层11的远离基板10的一侧。多个发光单元23沿灯条的长度方向间隔设置。每个发光单元23在基板10上的投影与相邻的两个第一金属片段111在基板10上的投影部分重叠。每个发光单元23的第一电极与相邻的两个第一金属片段中的一个金属片段电连接，每个发光单元23的第二电极与相邻的两个第一金属片段中的另一个金属片段电连接。
在一些实施例中，发光单元为LED电路。例如，发光单元为LED灯珠。
在一些实施例中，灯条中的多个发光单元包括多个发光单元组。多个发光单元组沿灯条的长度方向间隔设置。每个发光单元组包括多个发光单元子组，多个发光单元子组沿灯条的长度方向间隔设置。每个发光单元子组包括至少两个发光单元，该至少两个发光单元沿灯条的长度方向间隔设置。
图4是根据本公开另一个实施例的灯条的结构示意图。
如图4所示，灯条包括2个发光单元组21、22。发光单元组21包括3个发光单元子组211、212和213，发光单元组22包括3个发光单元子组214、215和216。每个发光单元子组中包括至少两个串联连接的发光单元23。
图5是图4所示灯条的局部放大示意图。作为示例，图5给出了发光单元子组211的具体结构。
如图5所示，在发光单元子组211中，包括7个发光单元231-237。每个发光单元在基板10上的投影与相邻的两个第一金属片段在基板上的投影部分重叠，每个发光单元的第一电极与相邻的两个第一金属片段中的一个金属片段电连接，每个发光单元的第二电极与相邻的两个第一金属片段中的另一个金属片段电连接。
例如，如图5所示，发光单元231的第一电极与相邻的第一金属片段241电连接，发光单元231的第二电极与相邻的第一金属片段242电连接。发光单元232的第一电极与相邻的第一金属片段242电连接，发光单元232的第二电极与相邻的第一金属片 段243电连接。发光单元233的第一电极与相邻的第一金属片段243电连接，发光单元233的第二电极与相邻的第一金属片段244电连接。发光单元234的第一电极与相邻的第一金属片段244电连接，发光单元234的第二电极与相邻的第一金属片段245电连接。发光单元235的第一电极与相邻的第一金属片段245电连接，发光单元235的第二电极与相邻的第一金属片段246电连接。发光单元236的第一电极与相邻的第一金属片段246电连接，发光单元236的第二电极与相邻的第一金属片段247电连接。发光单元237的第一电极与相邻的第一金属片段247电连接，发光单元237的第二电极与相邻的第一金属片段248电连接。由此实现发光单元231-237的串联连接。
这里，将仅与发光单元231的第一电极电连接的第一金属片段241作为发光单元子组211的第一端子，将仅与发光单元237的第二电极电连接的第一金属片段248作为发光单元子组211的第二端子。由于发光单元231-237串联连接，因此通过给发光单元子组211的第一端子施加正电压，给发光单元子组211的第二端子施加负电压，从而使得串联连接的发光单元子组211正常工作。
这里需要说明的是，由于其它发光单元子组与发光单元子组211的结构相同，因此这里不再赘述。
在一些实施例中，灯条还包括多个第一金属走线，设置在基板的第一侧。多个第一金属走线与多个发光单元组一一对应。每个第一金属走线与对应的发光单元组中的每个发光单元子组的第一端子电连接。灯条还包括多个第二金属走线，设置在基板的第二侧。多个第二金属走线与多个发光单元子组一一对应，每个第二金属走线与对应的发光单元子组的第三端子电连接。发光单元子组的第三端子为与发光单元子组的第二端子电连接的第二金属片段。通过给多个第一金属走线施加第一电压，给多个第二金属走线施加第二电压，第一电压与第二电压不同，从而实现闭合的回路。
例如，如图5所示，由于在灯条上设有2个发光单元组，因此在基板10的第一侧设置2根第一金属走线，即第一金属走线261、262。第一金属走线261与发光单元组21对应。第一金属走线261与发光单元组21中的发光单元子组211的第一端子电连接。发光单元子组211的第二端子与设置在基板10的第二侧的发光单元子组211的第三端子电连接。
图6是图5所示灯条的仰视示意图。
如图6所示，由于在灯条上设有6个发光单元子组，因此在基板10的第二侧设置6根第二金属走线，即第二金属走线271-276。第二金属走线271与作为发光单元 子组211的第三端子的第二金属片段258电连接。
在一些实施例中，灯条还包括多个第一过孔。每个第一过孔贯穿一个第一金属片段、基板和一个第二金属片段。第一过孔贯穿的第一金属片段不作为多个发光单元子组中的任一发光单元子组的第二端子，第一过孔贯穿的第二金属片段不作为多个发光单元子组中的任一个发光单元子组的第三端子。
例如，如图5所示，第一金属片段241-247不作为发光单元子组211的第二端子。如图6所示，第二金属片段251-257不作为发光单元子组211的第三端子。因此可在第一金属片段241-247、第二金属片段251-257上设置多个第一过孔281，以便实现散热作用。
在一些实施例中，灯条还包括多个第二过孔。每个第二过孔贯穿一个第一金属片段、基板和一个第二金属片段。第二过孔贯穿的第一金属片段为多个发光单元子组中的一个发光单元子组的第二端子，第二过孔贯穿的第二金属片段为多个发光单元子组中的一个发光单元子组的第三端子。
例如，如图5所示，第一金属片段248作为发光单元子组211的第二端子。如图6所示，第二金属片段258作为发光单元子组211的第三端子。因此可在第一金属片段248、第二金属片段258上设置多个第二过孔282，以便通过第二过孔282实现发光单元子组211的第二端子和第三端子的电连接。
图7是根据本公开一个实施例的发光单元子组的电连接示意图。
如图7所示，在灯条上设有2个发光单元组，每个发光单元子组包括3个发光单元子组的情况下，在基板10的第一侧设置第一金属走线261、262。在基板10的第一侧设置第二金属走线271-276。
第一金属走线261分别与发光单元子组211-213中的第一端子电连接，发光单元子组211的第二端子通过相应的第二过孔与设置在基板10的第二侧的发光单元子组211的第三端子电连接。由于发光单元子组211的第三端子与第二金属走线271电连接，从而发光单元子组211中串联连接的发光单元能够正常工作。发光单元子组212的第二端子通过相应的第二过孔与设置在基板10的第二侧的发光单元子组212的第三端子电连接。由于发光单元子组212的第三端子与第二金属走线272电连接，从而发光单元子组212中串联连接的发光单元能够正常工作。发光单元子组213的第二端子通过相应的第二过孔与设置在基板10的第二侧的发光单元子组213的第三端子电连接。由于发光单元子组213的第三端子与第二金属走线273电连接，从而发光单元 子组213中串联连接的发光单元能够正常工作。
第二金属走线262分别与发光单元子组214-216中的第一端子电连接，发光单元子组214的第二端子通过相应的第二过孔与设置在基板10的第二侧的发光单元子组214的第三端子电连接。由于发光单元子组214的第三端子与第二金属走线274电连接，从而发光单元子组214中串联连接的发光单元能够正常工作。发光单元子组215的第二端子通过相应的过孔与设置在基板10的第二侧的发光单元子组215的第三端子电连接。由于发光单元子组215的第三端子与第二金属走线275电连接，从而发光单元子组215中串联连接的发光单元能够正常工作。发光单元子组216的第二端子通过相应的过孔与设置在基板10的第二侧的发光单元子组216的第三端子电连接。由于发光单元子组216的第三端子与第二金属走线276电连接，从而发光单元子组216中串联连接的发光单元能够正常工作。
由此可知，设置在每个发光单元子组中的发光单元串联连接。各发光单元子组并联连接。由此可有效选择灯条中相应区域的发光单元进行发光。
图8是根据本公开又一个实施例的灯条的俯视示意图。为了便于理解，图8为灯条的透视示意图。
如图8所示，相邻的两个第一金属片段111之间的间隔112在基板上的投影落入第二金属片段112在基板10上的投影内。相邻的两个第二金属片段121之间的间隔122在基板10上的投影落入第一金属片段111在基板10上的投影内。发光单元23在基板10上的投影与相邻的两个第一金属片段在基板10上的投影部分重叠。相邻的两个第二金属片段121之间的间隔在基板上的投影与发光单元23在基板上的投影没有重叠。
这里需要说明的是，为了简明起见，在图8所示实施例中没有示出贯穿基板、第一金属片段和第二金属片段的过孔。
在本公开上述实施例提供的灯条中，通过调整相邻金属片段之间的间隔的位置，在有效避免发光装置发生短路的同时，还能确保灯条在任一区域的强度不会降低，有效降低了灯条发生断裂的可能性。
本公开还提供一种背光组件。该背景组件可包括如图1-5中任一实施例提供的灯条。
本公开还提供一种显示装置，该显示装置可包括上述任一实施例提供的显示面板。该显示装置可以为显示器、手机、平板电脑、电视机、笔记本电脑、数码相框、 导航仪等任何具有显示功能的产品或部件。
在一些实施例中，通过将本公开所提供的显示装置作为车载显示装置。由于车载显示装置能够有效避免灯条因受到外力作用而发生断裂的情况，因此可有效提升驾驶的安全性。
至此，已经详细描述了本公开的实施例。为了避免遮蔽本公开的构思，没有描述本领域所公知的一些细节。本领域技术人员根据上面的描述，完全可以明白如何实施这里公开的技术方案。虽然已经通过示例对本公开的一些特定实施例进行了详细说明，但是本领域的技术人员应该理解，以上示例仅是为了进行说明，而不是为了限制本公开的范围。本领域的技术人员应该理解，可在不脱离本公开的范围和精神的情况下，对以上实施例进行修改或者对部分技术特征进行等同替换。本公开的范围由所附权利要求来限定。

Claims (14)

  1. 一种灯条，包括：
    基板；
    第一金属层，设置在所述基板的第一侧，所述第一金属层包括多个第一金属片段，所述多个第一金属片段沿所述灯条的长度方向间隔设置；
    第二金属层，设置在所述基板的第二侧，所述第二金属层中包括多个第二金属片段，所述多个第二金属片段沿所述灯条的长度方向间隔设置；
    其中，相邻的两个第一金属片段之间的间隔在所述基板上的投影落入所述第二金属片段在所述基板上的投影内，相邻的两个第二金属片段之间的间隔在所述基板上的投影落入所述第一金属片段在所述基板上的投影内。
  2. 根据权利要求1所述的灯条，还包括：
    多个发光单元，所述多个发光单元设置在所述第一金属层的远离所述基板的一侧，所述多个发光单元沿所述灯条的长度方向间隔设置，每个发光单元在所述基板上的投影与相邻的两个第一金属片段在所述基板上的投影部分重叠，所述每个发光单元的第一电极与所述相邻的两个第一金属片段中的一个金属片段电连接，所述每个发光单元的第二电极与所述相邻的两个第一金属片段中的另一个金属片段电连接。
  3. 根据权利要求2所述的灯条，其中：
    所述多个发光单元包括多个发光单元组，所述多个发光单元组沿所述灯条的长度方向间隔设置，每个发光单元组包括多个发光单元子组，所述多个发光单元子组沿所述灯条的长度方向间隔设置，每个发光单元子组包括至少两个发光单元，所述至少两个发光单元沿所述灯条的长度方向间隔设置；
    其中，所述每个发光单元子组中的所述至少两个发光单元串联连接，不同的发光单元子组并联连接。
  4. 根据权利要求3所述的灯条，其中，
    在所述每个发光单元子组中，将仅与一个发光单元的第一电极电连接的第一金属片段作为所述发光单元子组的第一端子，将仅与一个发光单元的第二电极电连接的第 一金属片段作为所述发光单元子组的第二端子。
  5. 根据权利要求4所述的灯条，还包括：
    多个第一金属走线，设置在所述基板的第一侧，所述多个第一金属走线与所述多个发光单元组一一对应，每个第一金属走线与对应的发光单元组中的每个发光单元子组的第一端子电连接；
    多个第二金属走线，设置在所述基板的第二侧，所述多个第二金属走线与所述多个发光单元子组一一对应，每个第二金属走线与对应的发光单元子组的第三端子电连接，其中所述发光单元子组的第三端子为与所述发光单元子组的第二端子电连接的第二金属片段；
    其中，给所述多个第一金属走线施加第一电压，给所述多个第二金属走线施加第二电压，所述第一电压与所述第二电压不同。
  6. 根据权利要求5所述的灯条，还包括：
    多个第一过孔，每个第一过孔贯穿一个第一金属片段、所述基板和一个第二金属片段，其中所述第一过孔贯穿的第一金属片段不作为所述多个发光单元子组中的任一发光单元子组的第二端子，所述第一过孔贯穿的第二金属片段不作为所述多个发光单元子组中的任一个发光单元子组的第三端子。
  7. 根据权利要求5所述的灯条，还包括：
    多个第二过孔，每个第二过孔贯穿一个第一金属片段、所述基板和一个第二金属片段，其中所述第二过孔贯穿的第一金属片段为所述多个发光单元子组中的一个发光单元子组的第二端子，所述第二过孔贯穿的第二金属片段为所述多个发光单元子组中的一个发光单元子组的第三端子。
  8. 根据权利要求7所述的灯条，其中：
    所述发光单元子组的第二端子通过贯穿所述发光单元子组的第二端子、所述基板和所述发光单元子组的第三端子的至少一个第二过孔与所述发光单元子组的第三端子电连接。
  9. 根据权利要求2所述的灯条，其中，
    相邻的两个第二金属片段之间的间隔在所述基板上的投影与所述发光单元在所述基板上的投影没有重叠。
  10. 根据权利要求1所述的灯条，其中，所述基板的材料为柔性绝缘材料。
  11. 根据权利要求1所述的灯条，其中，所述第一金属片段和所述第二金属片段的材料包括铜。
  12. 根据权利要求2所述的灯条，其中，所述发光单元为LED电路。
  13. 一种背光组件，包括如权利要求1-12中任一项所述的灯条。
  14. 一种显示装置，包括如权利要求13所述的背光组件。
PCT/CN2019/106598 2019-09-19 2019-09-19 灯条、背光组件和显示装置 WO2021051334A1 (zh)

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