WO2015085657A1 - Led封装件及其制作方法 - Google Patents

Led封装件及其制作方法 Download PDF

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Publication number
WO2015085657A1
WO2015085657A1 PCT/CN2014/070116 CN2014070116W WO2015085657A1 WO 2015085657 A1 WO2015085657 A1 WO 2015085657A1 CN 2014070116 W CN2014070116 W CN 2014070116W WO 2015085657 A1 WO2015085657 A1 WO 2015085657A1
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WO
WIPO (PCT)
Prior art keywords
led
chip
bracket
blue light
pcb board
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2014/070116
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English (en)
French (fr)
Inventor
丘永元
康志聪
张简圣哲
苏赞加
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
TCL China Star Optoelectronics Technology Co Ltd
Original Assignee
Shenzhen China Star Optoelectronics Technology Co Ltd
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 Shenzhen China Star Optoelectronics Technology Co Ltd filed Critical Shenzhen China Star Optoelectronics Technology Co Ltd
Priority to JP2016529457A priority Critical patent/JP6357233B2/ja
Priority to GB1604510.6A priority patent/GB2534721B/en
Priority to KR1020167011189A priority patent/KR101817026B1/ko
Priority to US14/236,675 priority patent/US9142736B2/en
Publication of WO2015085657A1 publication Critical patent/WO2015085657A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10H—INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS
    • H10H20/00—Individual inorganic light-emitting semiconductor devices having potential barriers, e.g. light-emitting diodes [LED]
    • H10H20/80—Constructional details
    • H10H20/85—Packages
    • H10H20/851—Wavelength conversion means
    • H10H20/8514—Wavelength conversion means characterised by their shape, e.g. plate or foil
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10H—INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS
    • H10H20/00—Individual inorganic light-emitting semiconductor devices having potential barriers, e.g. light-emitting diodes [LED]
    • H10H20/80—Constructional details
    • H10H20/85—Packages
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
    • H10W90/00—Package configurations
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10H—INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS
    • H10H20/00—Individual inorganic light-emitting semiconductor devices having potential barriers, e.g. light-emitting diodes [LED]
    • H10H20/01—Manufacture or treatment
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10H—INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS
    • H10H20/00—Individual inorganic light-emitting semiconductor devices having potential barriers, e.g. light-emitting diodes [LED]
    • H10H20/80—Constructional details
    • H10H20/81—Bodies
    • H10H20/811—Bodies having quantum effect structures or superlattices, e.g. tunnel junctions
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10H—INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS
    • H10H20/00—Individual inorganic light-emitting semiconductor devices having potential barriers, e.g. light-emitting diodes [LED]
    • H10H20/80—Constructional details
    • H10H20/85—Packages
    • H10H20/8506—Containers
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10H—INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS
    • H10H20/00—Individual inorganic light-emitting semiconductor devices having potential barriers, e.g. light-emitting diodes [LED]
    • H10H20/80—Constructional details
    • H10H20/85—Packages
    • H10H20/852—Encapsulations
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10H—INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS
    • H10H29/00—Integrated devices, or assemblies of multiple devices, comprising at least one light-emitting semiconductor element covered by group H10H20/00
    • H10H29/10—Integrated devices comprising at least one light-emitting semiconductor component covered by group H10H20/00
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10H—INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS
    • H10H20/00—Individual inorganic light-emitting semiconductor devices having potential barriers, e.g. light-emitting diodes [LED]
    • H10H20/01—Manufacture or treatment
    • H10H20/036—Manufacture or treatment of packages
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10H—INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS
    • H10H20/00—Individual inorganic light-emitting semiconductor devices having potential barriers, e.g. light-emitting diodes [LED]
    • H10H20/01—Manufacture or treatment
    • H10H20/036—Manufacture or treatment of packages
    • H10H20/0361—Manufacture or treatment of packages of wavelength conversion means
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10H—INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS
    • H10H20/00—Individual inorganic light-emitting semiconductor devices having potential barriers, e.g. light-emitting diodes [LED]
    • H10H20/01—Manufacture or treatment
    • H10H20/036—Manufacture or treatment of packages
    • H10H20/0362—Manufacture or treatment of packages of encapsulations
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10H—INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS
    • H10H20/00—Individual inorganic light-emitting semiconductor devices having potential barriers, e.g. light-emitting diodes [LED]
    • H10H20/80—Constructional details
    • H10H20/85—Packages
    • H10H20/851—Wavelength conversion means
    • H10H20/8511—Wavelength conversion means characterised by their material, e.g. binder
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10H—INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS
    • H10H20/00—Individual inorganic light-emitting semiconductor devices having potential barriers, e.g. light-emitting diodes [LED]
    • H10H20/80—Constructional details
    • H10H20/85—Packages
    • H10H20/851—Wavelength conversion means
    • H10H20/8511—Wavelength conversion means characterised by their material, e.g. binder
    • H10H20/8512—Wavelength conversion materials

Definitions

  • Quantum Dots also known as nanocrystals, are composed of a finite number of ⁇ sub-dimensions, all of which are on the order of nanometers.
  • the quantum dots are generally spherical or spheroidal, and are nanoparticles made of a semiconductor material (usually composed of Group II ⁇ VI or III - V elements) and having a stable diameter between 1-iOnm.
  • Quantum dots are a collection of atoms and molecules at the nanometer scale. They can be composed of a semiconductor material, such as elements of Group II, VI (such as CdS, CdSe, CdTe, ZnSe, etc.) or III, V elements (such as MP). , InAs, etc.), can also be composed of two or more semiconductor materials.
  • Quantum dots are semiconductor nanostructures that constrain the conduction band electrons, valence band holes, and excitons in three spatial directions. Since the conduction band electrons and the valence band holes are quantum confined, the continuous band structure becomes a discrete energy level structure having molecular characteristics, and can be excited after being excited. Based on quantum effects, quantum dots have broad application prospects in the fields of solar cells, light-emitting devices, and optical biomarkers.
  • the photoelectric properties of quantum dots are closely linked to their size and shape. It is found that the band gap of a quantum dot is inversely proportional to the size, that is, the smaller the quantum dot size, the wider the band gap and the emission light shifts toward the blue light. Therefore, by controlling the size of the quantum dots, quantum dots having different emission spectra can be prepared.
  • the intensity of the quantum dot luminescence spectrum is shown in Fig. 2. As can be seen from the figure, the half-width of the quantum dot luminescence spectrum (about 50-60 nm) is greener than the current LED lamp (half-peak width about 80 nm), red phosphor. (Half-width is about 100 nm) The width of the half-peak is narrow. When used in a TV set, it is well matched with a photoresist (Color Filter (CF)) for high transmittance while ensuring high color gamut.
  • CF photoresist
  • quantum dot materials mainly use Cadmium Selenide (CdSe) as the core and Cadmium Sulfide (CdS) as the shell. Quantum dot materials are affected by high temperature and oxygen, so the current commercial The application of upper quantum dots needs to protect quantum dot materials.
  • the practice of protecting quantum dot materials is mainly divided into two types, one is the form of quantum dot diaphragm (QD film), and its structure is shown in Figure 3.
  • the diammonium glycolate (PET) material 104 encapsulates the quantum dot material 102, and the moisture barrier layer is also shown (mo sture Barrier layer 106 and LED encapsulant 108;
  • the other form is in the form of a quantum strip (QD-rail), the structure of which is shown in Figure 4.
  • the hollow glass tube 202 is used to encapsulate the quantum dot material! 02.
  • the quantum dot diaphragm requires a large number of quantum dot materials, and the color control is difficult in the Back Light Unit (BLU), and the mass productivity is low. Quantum bars are more mass-produced in terms of price and chromaticity control.
  • the cooperation and assembly of the quantum strip 302 and the LED element 304 are as shown in FIGS. 5 and 6, and the LED element 304 is mounted in a mixing cup 308 on the PCB board 306. And electrically connected to the PCB 306, the mixing chamber 308 has a light emitting surface, and the quantum strip 302 is mounted on the light emitting surface.
  • the assembly process of the quantum strip 302 and the LED element 304 is as shown in FIG. 7.
  • the assembly of the quantum strip 302 and the LED element 304 includes three steps: First, mounting the LED element 304 on the PCB board 306 while the LED element 304 is The PCB board 306 is electrically connected; secondly, a mixing chamber 308 is formed on the PCB board 306; Third, a quantum strip 302 is mounted on the light emitting surface of the mixing chamber 308.
  • the coordination of the quantum strip 302 and the LED element 304 needs to be well collimated; in addition, the cooperation of the mixing chamber 308 and the quantum strip 302 also needs to ensure good stability. Prevent sloshing, detachment, etc. Due to the fragile nature of the glass tube of the quantum strip 302, the assembly process is extremely difficult and risky. Summary of the invention
  • An object of the present invention is to provide an LED package in which a quantum strip and an LED element are integrally packaged and mounted firmly, which reduces assembly difficulty of a backlight module using a quantum strip, and also avoids LED elements and quantum in the prior art.
  • the light leakage problem caused by the misalignment of the strips further reduces the frame width of the television set to which the LED package is applied.
  • Another object of the present invention is to provide a method for fabricating an LED package.
  • the method is simple in operation, and the quantum strip and the LED component are integrally packaged, and the installation is firm, thereby reducing the assembly difficulty of the backlight module using the quantum strip.
  • the light leakage problem caused by the misalignment between the LED element and the quantum strip in the prior art is also avoided, and the frame width of the television set to which the LED package is applied is further reduced.
  • the present invention provides an LED package, including: a first bracket, a plurality of LED elements, an encapsulant, and a quantum strip
  • the first bracket includes a PCB board and is formed on a periphery of the PCB board
  • the four side walls are defined as an accommodating space, and the plurality of LED elements are mounted on the PCB and located in the accommodating space, and are electrically connected to the PCB board.
  • the encapsulant is filled in the accommodating space, and the upper ends of the four inverted walls are respectively provided with a mounting portion, the quantum strip is mounted on the mounting portion, and the quantum strip is located Above the encapsulant, the first bracket, the plurality of LED components and the quantum strip are integrally packaged and fixedly combined.
  • the mounting portion is a limiting slot, and the height of the limiting slot is equal to the thickness of the quantum strip, so that the quantum strip is snap-fitted on the limiting slot.
  • the plurality of LED elements are a plurality of LED chips, and the LED chips are a positive-loading blue chip or a flip-chip blue chip; when the plurality of LED elements are a plurality of positive-loading blue-light chips, each of the LED elements passes through a solid-crystal process and The gold wire process is mounted on the PCB.
  • the plurality of LED components are a plurality of flip-chip blue chips, each of the LED components is mounted on the PCB by a die bonding process.
  • Each of the LED elements includes: a second bracket, and an LED chip mounted on the second bracket and electrically connected to the second bracket, wherein the plurality of LED components are mounted on the soldering process by the reflow soldering process
  • the LED chip is a positive-loading blue chip or a flip-chip blue chip; when the LED chip is a positive-loading blue chip, the LED chip is mounted on the second bracket by a die bonding process and a gold wire process.
  • the LED chip is a flip-chip blue chip, the LED chip is mounted on the second bracket by a die bonding process.
  • the quantum strip includes: a glass tube and a quantum dot material sealed in the glass tube, the depth of the limiting groove is equal to or greater than a thickness of the glass tube wall, and the end portion of the glass tube is a rectangle
  • the material of the four sidewalls is 1,4-cyclohexanedimethanol ester of terephthalic acid; the encapsulant is silica gel.
  • the invention also provides a method for fabricating an LED package, comprising the following steps:
  • the first bracket includes a PCB board and four side walls formed on the peripheral edge of the PCB board, and the upper ends of the four side walls are respectively provided with a mounting portion, Four inverted walls enclose an accommodation space;
  • Step 2 providing a plurality of LED components, and mounting the plurality of LED components on the PCB of the first bracket, wherein the plurality of LED components are disposed in the receiving space, and the plurality of LED components are Electrical connection of the PCB board;
  • Step 3 filling the packaging space of the first bracket into the packaging glue
  • Step 4 providing a quantum strip, and mounting the quantum strip on the four inverted wall mounting portions, the quantum strip is located above the package;
  • the LED elements are a plurality of LED chips, and the LED chips are a positive-loading blue chip or a flip-chip blue chip; when the LED chip is a positive-loading blue chip, the step 2 passes the solid crystal process and the gold wire process. Mounting the LED chip on the PCB board; when the LED chip is a flip-chip blue chip, the LED core is removed by a die bonding process in the step 2 The sheet is mounted on the PCB board.
  • Each of the LED components includes: a second bracket and an LED chip mounted on the second bracket and electrically connected to the second bracket, wherein the plurality of LED components in the step 2 are reflowed
  • the process is mounted on the PCB, the LED chip is a positive-loading blue chip or a flip-chip blue chip; when the LED chip is a positive-loading blue chip, the LED chip is installed in a solid crystal process and a gold wire process
  • the LED chip is a flip-chip blue chip, the LED chip is mounted on the second bracket by a die bonding process.
  • the mounting portion is a limiting slot, the height of the limiting slot is equal to the thickness of the quantum strip, and the quantum strip is locked and mounted on the limiting slot in the step 4;
  • the encapsulant is cured by heating.
  • the quantum strip includes: a glass tube and a quantum dot material sealed in the glass tube, the depth of the limiting groove is equal to or greater than a thickness of the glass tube wall, and the end portion of the glass tube is a rectangle
  • the material of the four sidewalls is 1,4-cyclohexanedimethanol ester of poly(terephthalic acid);
  • the present invention also provides a method for fabricating an LED package, comprising the following steps:
  • the first bracket includes a PCB board and four side walls formed on the peripheral edge of the PCB board, and the upper ends of the four side walls are respectively provided with a mounting portion, The four side walls enclose an accommodation space;
  • Step 2 Providing a plurality of LED components, and mounting the plurality of LED components on the PCB of the first bracket, wherein the plurality of LED components are disposed in the receiving space, and the plurality of LED components and the PCB board are electrically Sexual connection
  • Step 3 filling the packaging space of the first bracket into the packaging glue
  • Step 4 providing a quantum strip, and mounting the quantum strip on the four inverted wall mounting portions, the quantum strip is located above the encapsulant;
  • Step 5 curing the encapsulant
  • the plurality of LED elements are a plurality of LED chips, and the LED chip is a positive-loading blue chip or a flip-chip blue chip; when the LED chip is a positive-loading blue chip, the step 2 passes the solid crystal process and the gold The LED chip mounts the LED chip on the PCB board; when the LED chip is a flip-chip blue chip, the LED chip is mounted on the PCB i by a die bonding process in the step 2.
  • Each of the LED components includes: a second bracket and an LED chip mounted on the second bracket and electrically connected to the second bracket, wherein the plurality of LED components in the step 2 are reflowed
  • the process is mounted on the PCB, the LED chip is a positive-loading blue chip or a flip-chip blue chip; when the LED chip is a positive-loading blue chip, the LED chip passes through the solid The crystal processing and the gold wire process are mounted on the second bracket.
  • the LED chip is a flip chip blue chip, the LED chip is mounted on the second bracket by a die bonding process.
  • the mounting portion is a limiting slot, the height of the limiting slot is equal to the thickness of the quantum strip, and the quantum strip is locked and mounted on the limiting slot in the step 4;
  • the encapsulant is cured by heating.
  • the quantum strip includes: a glass tube and a quantum dot material sealed in the glass tube, the depth of the limiting groove is equal to or greater than a thickness of the glass tube wall, and the end portion of the glass tube is a rectangle
  • the material of the four sidewalls is 1,4-cyclohexanedimethanol ester of terephthalic acid; the encapsulant is silica gel.
  • the invention has the beneficial effects: the LED package of the invention and the manufacturing method thereof, the quantum strip and the LED component are integrally packaged, and the installation is firm, the assembly difficulty of the backlight module using the quantum strip is reduced, and the prior art is also avoided.
  • the problem of light leakage caused by the misalignment between the LED elements and the quantum strips in the presence of the LEDs further reduces the frame width of the television set to which the LED package is applied.
  • Figure i is a schematic structural view of a quantum dot in the prior art
  • FIG. 2 is a schematic diagram of light intensity of a quantum dot emitting light pan in the prior art
  • FIG. 3 is a schematic structural view of a quantum dot diaphragm in the prior art
  • FIG. 4 is a schematic view showing the structure of a quantum strip in the prior art
  • FIG. 5 is a cross-sectional view of a quantum strip and an LED component in a prior art side-lit backlight module
  • FIG. 6 is a top view of a quantum strip and an LED component in a prior art side-lit backlight module
  • FIG. 7 is an assembly flow diagram of a quantum strip and an LED component in a prior art side-lit backlight module
  • Figure 8 is a cross-sectional view showing an embodiment of an LED package of the present invention.
  • Figure 9 is a plan view of the LED package shown in Figure 8.
  • FIG. 10 is a process flow diagram of the LED package shown in FIG. 8;
  • Figure 11 is a cross-sectional view showing another embodiment of the LED package of the present invention.
  • Figure 12 is a plan view of the LED package shown in Figure 11;
  • the LED package of the present invention can be applied to a backlight module in the field of display technology, and specifically includes: a first bracket 10 and a plurality of LED components 20.
  • the encapsulant 30 and the quantum strip 40, the first bracket 10 includes a PCB board 2 and four side walls 4 formed on edges of the PCB board 12, the four side walls 4 are formed into one
  • the accommodating space 18 is mounted on the PCB board 12 and located in the accommodating space 18, and is electrically connected to the PCB board 12, and the encapsulant 30 is filled in the In the accommodating space 18, the upper ends of the four side walls 14 are respectively provided with a mounting portion 16, and the quantum strips 40 are mounted on the mounting portion 16, and the quantum strips 40 are located above the encapsulant 30.
  • the first bracket 10, the plurality of LED elements 20 and the quantum strips 40 are integrally packaged to be fixedly combined, thereby reducing the assembly difficulty of the backlight module using the quantum strip 40, and avoiding the quantum phenomenon occurring in the prior art. Leakage problems caused by misalignment of strips and LED components.
  • the plurality of LED elements 20 are mounted on the PCB 12 and electrically connected to the PCB 12 to form an LED strip.
  • the first bracket 0 is formed by injection molding a PCB board 12 having an etched circuit structure, and four side walls 14 are formed on the PCB board 12.
  • the plurality of LED elements 20, the encapsulant 30, and the quantum strips 40 are respectively received in the accommodating space 18.
  • the upper ends of the four side walls 14 are respectively provided with a mounting portion 16 , and the encapsulant 30 is filled in the accommodating space 18 .
  • the quantum strip 40 is fixedly mounted on the mounting portion 16.
  • the mounting portion 16 is a limiting slot, and the height h of the limiting slot is equal to the thickness of the quantum strip 40.
  • the quantum strip 40 is snap-fitted on the limiting slot.
  • the material of the four side walls 14 is preferably poly(1,4-cyclohexanedimethanol) (PCT).
  • the plurality of LED elements 20 are a plurality of LED chips, and the plurality of LED chips adopt COB
  • the chip on board is directly bonded to the PCB board 12 to form an LED strip.
  • the LED chip is a positive-loading blue chip or a flip-chip blue chip; when the plurality of LED elements 20 are a plurality of positive-loading blue-light chips, each of the LED elements 20 is mounted on a solid crystal process and a gold wire process.
  • the PCB board On the PCB board i2, when the plurality of LED elements 20 are When a plurality of flip-chip blue chips are used, the gold wire process can be omitted, that is, each of the LED elements 20 is mounted on the PCB board 12 by a die bonding process.
  • the quantum strip 40 includes: a glass tube 42 and a quantum dot material 44 sealed in the glass tube 42.
  • the depth d of the limiting groove is equal to or greater than the thickness of the tube wall of the glass tube 42.
  • the depth d of the limiting groove should be as small as possible, so that the quantum strip 40 can be quickly installed into the limiting slot by gently pressing the quantum strip 40, and The quantum strip 40 is not damaged.
  • the end portion of the glass tube 42 has a rectangular shape, which is advantageous for achieving thinning of the LED package.
  • the LED chip is a blue chip, and the light emitted by the LED chip is blue light. If the light emitted by the LED chip exits from the edge of the quantum strip 40, the outgoing light is blue light, which is inconsistent with the requirement.
  • the depth d of the limiting groove on the four side walls 14 of the first bracket 10 is equal to (or slightly larger than) the thickness of the tube wall of the glass tube 42 of the quantum strip 12, so as to prevent the blue light emitted by the LED chip from being transparent.
  • the glass tube 42 is transmitted through the wall of the glass tube 42. At this time, the blue light emitted by the LED chip passes through the quantum dot material 44 in the quantum strip 40, and the finally emitted light is white light.
  • the encapsulant 30 is used to fix the quantum strip 12 located above it and to protect the bare
  • the LED chip (and the exposed gold wire), the encapsulant 30 is preferably a silica gel.
  • the plurality of LED elements 20' are a plurality of LED lamps mounted on the PCB board 12 by a reflow process.
  • each of the LED elements 20' includes: a second bracket 22, and an LED chip 24 mounted on the second bracket 22 and electrically connected to the second bracket 22, by the second The bracket 22 is capable of better protecting the LED chip 24 while also increasing the overall height of the quantum strip 40 and the PCB board 12.
  • the LED chip 24 is a positive-loading blue chip or a flip-chip blue chip; when the LED chip 24 is a positive-loading blue chip, the LED chip 24 is mounted on the second bracket 22 by a die bonding process and a gold wire process. When the LED chip 24 is a flip-chip blue chip, the LED chip 24 is mounted on the second bracket 22 by a die bonding process.
  • the present invention further provides a method for fabricating an LED package, comprising the following steps:
  • Step 1 A first bracket 10 is provided.
  • the first bracket 10 includes a PCB board 12 and four side walls 14 formed on the periphery of the PCB board 12. The upper ends of the four side walls 14 are provided. There is a mounting portion 16, and the four side walls 14 define an accommodating space 18.
  • the first bracket 10 is formed in the following manner: A PCB board that has been etched with a circuit structure! 2, four side walls 14 are formed on the PCB board 12 by injection molding. The upper end of the four side walls 14 is provided with a mounting portion 16.
  • the mounting portion 6 is a limiting slot, and the limiting slot has a width equal to (or slightly larger than) the edge of the quantum strip. Thickness to ensure LED chip
  • the emitted blue light passes through the quantum dot material in the quantum strip, and the last light emitted is white light.
  • the material of the side walls 14 is preferably poly(1,4-cyclohexanedimethanol terephthalate (PCX).
  • Step 2 providing a plurality of LED elements 20, and mounting the plurality of LED elements 20 on the PCB board 12 of the first bracket 10, and the plurality of LED elements 20 are disposed in the accommodating space 18, A plurality of LED elements 20 are electrically connected to the PCB board 12.
  • the plurality of LED elements 20 are a plurality of LED chips, as shown in FIG. 8 to FIG. 10.
  • the plurality of LED chips are directly solidified by a COB (chip on board) patch method. Crystallized on the PCB board 12 to form an LED strip.
  • the LED chip is a positive-loading blue chip or a flip-chip blue chip.
  • the LED chip is a positive-loading blue chip, in this step, through the solid The LED process and the gold wire process mount the LED chip on the PCB board 12; when the LED chip is a flip-chip blue chip, in the step, the LED chip can be obtained only by a die bonding process Mounted on the PCB board 12.
  • the plurality of LED elements 20 are a plurality of LED lamps, as shown in FIGS. 11 and 12. In this step, it is mounted on the PCB board 12 by a reflow process to form the effect of the LED strip.
  • each of the LED elements 20 includes: a second bracket 22, and an LED chip 24 mounted on the second bracket 22 and electrically connected to the second bracket 22, by the second bracket 22
  • the LED chip 24 can be protected more well, and the overall height of the quantum strip 40 and the PCB board 12 can also be increased.
  • the LED chip 24 is a positive-loading blue chip or a flip-chip blue chip; when the LED chip 24 is a positive-loading blue chip, the LED chip 24 is mounted on the second bracket 22 by a die bonding process and a gold wire process. When the LED chip 24 is a flip-chip blue chip, the LED chip 24 is mounted on the second bracket 22 by a die bonding process.
  • Step 3 pour the encapsulant 30 into the accommodating space 18 of the first bracket 10.
  • the encapsulant 30 is used to protect the exposed LED chip (and the exposed gold wire).
  • Step 4 A quantum strip 40 is provided, and the quantum strip 40 is mounted on the mounting portion 16 of the four sidewalls 14. The quantum strip 40 is located above the encapsulant 30.
  • the mounting portion 16 is a limiting slot
  • the height h of the limiting slot is equal to the thickness of the quantum strip 40
  • the quantum strip 40 is locked and installed in the step 4 On the bit slot.
  • the quantum strip 40 includes: a glass tube 42 and a quantum dot material 44 sealed in the glass tube 42.
  • the depth d of the limiting groove is equal to or greater than the thickness of the tube wall of the glass tube 42.
  • the depth d of the limiting groove should be as small as possible, so that the quantum strip 40 can be quickly installed into the limit
  • the quantum strip 40 is not damaged in the bit groove.
  • the end portion of the glass tube 42 has a rectangular cross section, which is advantageous for achieving thinning of the LED package. It is worth mentioning that, in this embodiment, the LED chip is a blue chip, and the light emitted by the LED chip is blue light.
  • the outgoing light is blue light, which is inconsistent with the requirement.
  • the depth d of the limiting groove on the four side walls 14 of the first bracket 10 is equal to (or slightly larger than) the thickness of the tube wall of the glass tube 42 of the quantum strip 12, so as to prevent the blue light emitted by the LED chip from being transparent.
  • the blue light emitted by the LED chip passes through the quantum dot material 44 in the quantum strip 40, and the finally emitted light is white light, so that the light emitted by the LED chip passes through the light.
  • the quantum dot material 44 in the quantum strip 40 is such that the last emitted light is white light.
  • Step 5 Curing the encapsulant 30.
  • the encapsulant is cured by heating, the encapsulant has a viscosity, and the cured encapsulant can well fix the quantum strip 40 to the first holder 10.
  • the present invention provides an LED package and a manufacturing method thereof.
  • the quantum strip and the LED component are integrally packaged and installed firmly, which reduces the assembly of the backlight module using the quantum strip, and avoids the present LED components and quantum appearing in technology
  • Light leakage problem further reduces the frame width of the TV set using the LED package

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  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)

Abstract

提供一种发光二极管（LED）封装件及其制作方法，所述LED封装件包括：第一支架（10）、数个LED元件（20）、封装胶（30）以及量子条（40），该第一支架（10）包括PCB板（12）及四个侧壁（14），该四个侧壁（14）围成容置空间（18），该数个LED元件（20）安装于该PCB板（12）上，且与其电性连接，所述封装胶（30）填充于所述容置空间（18）中，所述四个侧壁（14）的上端均设有安装部（16），所述量子条（40）安装于所述安装部（16）上，所述量子条（40）位于所述封装胶（30）的上方，所述第一支架（10）、数个LED元件（20）及量子条（40）一体化封装，以固定组合在一起。

Description

L LED ( Light Emitting Diode , 发光二极管)封
域， 尤 种具有量子器件的 LED封装件及其制作方法。 背景;
量子点 ( Quantum Dots， QD ) 又可以称为纳米晶体， 是由有限数目的 ^子组成， 三个维度尺寸均在纳米数量级。 请参阅图 , 量子点一般为球 形或类球形， 是由半导体材料 (通常由 II ~ VI族.或 III - V族元素组成 )制 成的、 稳定直径介于 1- iOnm之间的纳米粒子。 量子点是在纳米尺度上的 原子和分子的集合体， 既可由一种半导体材料组成， 如由 II、 VI族元素 (如 CdS、 CdSe、 CdTe、 ZnSe等)或 III、 V族元素 (如 MP , InAs等)组成， 也可以由两种或两种以上的半导体材料组成。
量子点是把导带电子、 价带空穴及激子在三个空间方向上束缚住的半 导体纳米结构。 由于导带电子和价带空穴被量子限域， 连续的能带结构变 成具有分子特性的分立能级结构， 受激后可以发射荧光。 基于量子效应， 量子点在太阳能电池、 发光器件、 光学生物标记等领域具有广泛的应用前 景。
量子点的光电特性与其尺寸和形状紧密相连。 研究发现量子点的能带 带隙与尺寸成反比， 即量子点尺寸越小能带带隙越宽， 发射光往蓝光偏 移。 因此通过控制量子点的尺寸， 可制备出具有不同发射光谱的量子点。 量子点发光光谱的强度如图 2 所示， 从图中可知， 量子点发光光谱半峰宽 (约 50- 60nm )相较于目前 LED灯常用的绿色 （半峰宽约 80nm ) 、 红色 荧光粉（半峰宽约 lOOnm )半峰宽窄。 在电视机中使用时， 能很好地搭配 光阻（彩色滤光片 （ Color Filter, CF ) ) ， 实现高穿透率， 同时保证高色 域。
目前， 商业量子点材料主要以硒化镉 ( Cadmium Selenide, CdSe )为 核， 以硫化镉 （Cadmium Sulfide, CdS ) 为壳„ 量子点材料受高温及氧气 的影响会导致其失效， 因此， 目前商业上量子点的运用都需保护量子点材 料。 保护量子点材料做法主要分为两种， 一为釆用量子点膜片 （QD film ) 的形式， 其结构如图 3 所示， 通过聚对苯二曱酸乙二醇酯 （PET ) 材料 104 将量子点材料 102 封装起来， 图中还示出了防潮层 （mo sture barrier layer ) 106以及 LED封装材料 ( encapsulant ) 108; 另一-种形式为量 子条（QD- rail ) 的形式， 其结构如图 4所示， 其采用空心玻璃管 202封装 量子点材料！02。
量子点膜片需要使用的量子点材料多， 且在背光模组 （Back Light Unit, BLU ) 中色度控制困难， 量产性低。 而量子条则在价格及色度控制 上都较有量产性。 在侧边式背光模组的应用中， 量子条 302 与 LED元件 304的配合及组装如图 5及图 6所示 , LED元件 304安装于 PCB板 306上 的混合室 （mixing cup ) 308 内， 并与 PCB 板 306 电性连接， 该混合室 308 具有一出光面， 而量子条 302 则安装于该出光面上。 量子条 302 与 LED元件 304的组装流程如图 7所示， 量子条 302与 LED元件 304的组 装包括 3个步骤： 第一、 将 LED元件 304安装于 PCB板 306上， 同时将 LED元件 304与 PCB板 306电性连接； 第二、 在该 PCB板 306上形成混 合室 308; 第三、 在混合室 308 的出光面上安装量子条 302。 为保证量子 条 302的利用率， 减小漏光等问题， 量子条 302与 LED元件 304的配合 需保持良好的准直; 另外， 混合室 308与量子条 302的配合也需保证良好 的稳固性， 防止出现晃动、 脱离等情况。 由于量子条 302 的玻璃管易碎的 特性， 导致组装过程存在极大的难度和风险。 发明内容
本发明的目的在于提供一种 LED封装件， 其中量子条与 LED元件一 体化封装， 安装牢固， 降低了应用量子条的背光模组的组装难度， 同时也 避免了现有技术中 LED 元件与量子条对位不准带来的漏光问题， 进一步 减小了应用该 LED封装件的电视机的边框宽度。
本发明的另一目的还在于提供一种 LED封装件的制作方法， 该方法 操作简单， 将量子条与 LED 元件一体化封装， 安装牢固， 降低了应用量 子条的背光模组的组装难度， 同时也避免了现有技术中 LED 元件与量子 条对位不准带来的漏光问题， 进一步减 ' j、了应用该 LED封装件的电视机 的边框宽度。
为实现上述目的， 本发明提供一种 LED封装件， 包括： 第一支架、 数个 LED元件、 封装胶以及量子条， 所述第一支架包括一 PCB板以及形 成于所述 PCB板四周边缘上的四个侧壁， 所述四个侧壁围成一容置空间， 所述数个 LED元件安装于所述 PCB板上且位于所述容置空间内， 并与所 述 PCB板电性连接， 所述封装胶填充于所述容置空间中， 所述四个倒壁的 上端均设有一安装部， 所述量子条安装于所述安装部上， 所述量子条位于 所述封装胶的上方， 所述第一支架、 数个 LED 元件及量子条一体化封 装， 以固定组合在一起。
所述安装部为一限位槽， 所述限位槽的高度等于所述量子条的厚度， 以使所述量子条卡合安装于该限位槽上。
所述数个 LED元件为数个 LED芯片， 所述 LED芯片为正装蓝光芯片 或倒装蓝光芯片； 当所述数个 LED 元件为数个正装蓝光芯片时， 每一所 述 LED元件通过固晶制程及打金线制程安装于所述 PCB板上， 当所述.数 个 LED元件为数个倒装蓝光芯片时， 每一所述 LED元件通过固晶制程安 装于所述 PCB板上。
每一所述 LED元件包括: 一第二支架、 以及安装于所述第二支架上 且与所述第二支架电性连接的 LED芯片， 所述数个 LED元件通过回流焊 制程安装于所述 PCB板上， 所述 LED芯片为正装蓝光芯片或倒装蓝光芯 片； 当所述 LED芯片为正装蓝光芯片时， 所述 LED芯片通过固晶制程及 打金线制程安装于所述第二支架上， 当所述 LED 芯片为倒装蓝光芯片 时， 所述 LED芯片通过固晶制程安装于所述第二支架上。
所述量子条包括： 一玻璃管以及密封于所述玻璃管内的量子点材料， 所述限位槽的深度等于或大于所述玻璃管管壁的厚度， 所述玻璃管端部截 面为一矩形； 所述四个侧壁的材质为聚对苯二曱酸 1,4-环己烷二甲醇酯； 所述封装胶为硅胶。
本发明还提供一种 LED封装件的制作方法， 包括以下步骤：
步骤】、 提供一第一支架， 所述第一支架包括一 PCB板以及形成于所 述 PCB板四周边缘上的四个侧壁， 所述四个侧壁的上端均设有一安装部， 所述四个倒壁围成一容置空间；
步骤 2、 提供数个 LED元件， 并将该数个 LED元件安装于所述第一 支架的 PCB板上， 且所述数个 LED元件设于容置空闾内， 所述数个 LED 元件与 PCB板电性连接；
步骤 3、 往所述第一支架的容置空间灌入封装胶；
步骤 4、 提供一量子条， 并将所述量子条安装于所述四个倒壁的安装 部上， 所述量子条位于所述封装.胶的上方；
步骤 5、 固化该封装胶„
所述数个 LED元件为数个 LED芯片， 所述 LED芯片为正装蓝光芯片 或倒装蓝光芯片； 当所述 LED 芯片为正装蓝光芯片时， 所述步骤 2 中通 过固晶制程及打金线制程将所述 LED芯片安装于所述 PCB板上； 当所述 LED芯片为倒装蓝光芯片时， 所述步骤 2 中通过固晶制程将所述 LED芯 片安装于所述 PCB板上。
每一所述 LED 元件包括： 第二支架以及安装于所述第二支架上且与 所述第二支架电性连.接的 LED芯片， 所述步驟 2中所述数个 LED元件通 过回流焊制程安装于所述 PCB板上， 所述 LED芯片为正装蓝光芯片或倒 装蓝光芯片； 当所述 LED芯片为正装蓝光芯片时， 所述 LED芯片通过固 晶制程及打金线制程安装于所述第二支架上， 当所述 LED 芯片为倒装蓝 光芯片时， 所述 LED芯片通过固晶制程安装于所述第二支架上。
所述安装部为一限位槽， 所述限位槽的高度等于所述量子条的厚度， 所述步骤 4中所述量子条卡合安装于该限位槽上； 所述步骤 5中釆用加热 的方式固化封装胶。
所述量子条包括： 一玻璃管以及密封于所述玻璃管内的量子点材料， 所述限位槽的深度等于或大于所述玻璃管管壁的厚度， 所述玻璃管端部截 面为一矩形； 所述四个侧壁的材质为聚对苯二曱酸 1,4-环己烷二甲醇酯； ' 本发明还提供一种 LED封装件的制作方法， 包括以下步骤：
步骤】、 提供一第一支架， 所述第一支架包括一 PCB板以及形成于所 述 PCB板四周边缘上的四个侧壁， 所述四个侧壁的上端均设有一安装部， 所述四个側壁围成一容置空间；
步骤 2。 提供数个 LED元件， 并将该数个 LED元件安装于所述第一 支架的 PCB板上， 且所述数个 LED元件设于容置空闾内， 所述数个 LED 元件与 PCB板电性连接；
步骤 3、 往所述第一支架的容置空间灌入封装胶；
步骤 4、 提供一量子条， 并将所述量子条安装于所述四个倒壁的安装 部上， 所述量子条位于所述封装胶的上方；
步骤 5、 固化该封装胶；
其中， 所述数个 LED元件为数个 LED芯片， 所述 LED芯片为正装蓝 光芯片或倒装蓝光芯片； 当所述 LED芯片为正装蓝光芯片时， 所述步骤 2 中通过固晶制程及打金线制程将所述 LED芯片安装于所述 PCB板上； 当 所述 LED 芯片为倒装蓝光芯片时， 所述步骤 2 中通过固晶制程将所述 LED芯片安装于所述 PCB i 。
每一所述 LED 元件包括： 第二支架以及安装于所述第二支架上且与 所述第二支架电性连.接的 LED芯片， 所述步驟 2中所述数个 LED元件通 过回流焊制程安装于所述 PCB板上， 所述 LED芯片为正装蓝光芯片或倒 装蓝光芯片； 当所述 LED芯片为正装蓝光芯片时， 所述 LED芯片通过固 晶制程及打金线制程安装于所述第二支架上， 当所述 LED 芯片为倒装蓝 光芯片时， 所述 LED芯片通过固晶制程安装于所述第二支架上。
所述安装部为一限位槽， 所述限位槽的高度等于所述量子条的厚度， 所述步骤 4中所述量子条卡合安装于该限位槽上； 所述步骤 5中采用加热 的方式固化封装胶。
所述量子条包括： 一玻璃管以及密封于所述玻璃管内的量子点材料， 所述限位槽的深度等于或大于所述玻璃管管壁的厚度， 所述玻璃管端部截 面为一矩形； 所述四个侧壁的材质为聚对苯二曱酸 1,4-环己烷二甲醇酯； 所述封装胶为硅胶。
本发明的有益效果： 本发明的 LED封装件及其制作方法， 将量子条 与 LED 元件一体化封装， 安装牢固， 降低了应用量子条的背光模组的组 装难度， 同时也避免了现有技术中出现的 LED 元件与量子条对位不准带 来的漏光问题， 进一步减小了应用该 LED封装件的电视机的边框宽度。
为了能更进一步了解本发明的特征以及技术内容， 请参阅以下有关本 发明的详细说明与附图， 然而附图仅提供参考与说明用， 并非用来对本发 明加以限制。 附图说明
下面结合附图， 通过对本发明的具体实施方式详细描述， 将使本发明 的技术方案及其它有益效果显而易见。
附图中，
图 i为现有技术中量子点的结构示意图；
图 2为现有技术中量子点发射光潘的光强示意图；
图 3为现有技术中量子点膜片结构示意图；
图 4为现有技术中量子条结构示意图；
图 5 为现有技术侧边式背光模组中量子条与 LED 元件配合的剖视 图；
图 6 为现有技术侧边式背光模组中量子条与 LED 元件配合的俯视 图；
图 7 为现有技术侧边式背光模组中量子条与 LED 元件的组装流程 图；
图 8为本发明 LED封装件一实施例的剖视图；
图 9为图 8所示的 LED封装件的俯视图；
图 10为图 8所示的 LED封装件的工艺流程图； 图 11为本发明 LED封装件另一实施例的剖视图；
图 12为图 11所示的 LED封装件的俯视图；
图 13为本发明 LED封装件的制作方法的流程图。 具体实旅方式 的优选实 i例及其附图 详 描述。' ¾ r " 、、 ' 请参阅图 8至图 10, 本发明提^—种 LED封装件， 可以应用于显示 技术领域的背光模组中， 其具体包括： 第一支架 10、 数个 LED元件 20。 封装胶 30以及量子条 40, 所述第一支架 10包括一 PCB板 2以及形成于 所述 PCB板 12四周边缘上的四个侧壁 4， 所述四个侧壁〗4围成一容置 空间 18, 所述数个 LED元件 20安装于所述 PCB板 12上且位于所述容置 空间 18内， 并与所述 PCB板 12电性连接， 所述封装胶 30填充于所述容 置空间 18 中， 所述四个侧壁 14 的上端均设有一安装部 16, 所述量子条 40安装于所述安装部 16上， 所述量子条 40位于所述封装胶 30的上方， 所述第 支架 10、 数个 LED元件 20及量子条 40一体化封装， 以固定组 合在一起， 进而降低应用量子条 40 的背光模组的组装难度， 同时可以避 免现有技术中出现的由于量子条与 LED 元件对位不准而带来的漏光问 题。
所述数个 LED元件 20均安装于 PCB板 12上， 并与 PCB板 12电性 连接， 以形成 LED灯条的效杲。 该第一支架 0的形成方式为： 对已经蚀 刻好电路结构的 PCB板 12采用注塑成型的方式, 在该 PCB板 12上形成 四个侧壁 14。 所述数个 LED元件 20、 封装胶 30以及量子条 40均收容于 该容置空间 18 内， 所述四个侧壁 14上端均设有一安装部 16， 封装胶 30 填充于容置空间 18中的高度刚好到达该安装部 16。 所述量子条 40固定安 装于该安装部 16上， 在本实施例中， 所述安装部 16为一限位槽， 所述限 位槽的高度 h等于所述量子条 40的厚度， 以使所述量子条 40卡合安装于 所述限位槽上。 所述四个侧壁 14的材质优选为聚对苯二甲酸 1,4-环己烷二 甲醇酯 （PCT ) 。
所述.数个 LED元件 20为数个 LED芯片 , 该数个 LED芯片采用 COB
( chip on board )贴片方式直接固晶于 PCB板 12 , 以形成 LED灯条的效 果。 优选的， 所述 LED 芯片为正装蓝光芯片或倒装蓝光芯片； 当所述数 个 LED元件 20为数个正装蓝光芯片时， 每一所述 LED元件 20通过固晶 制程及打金线制程安装于所述 PCB板 i2上， 当所述数个 LED元件 20为 数个倒装蓝光芯片时， 可以省掉打金线制程， 即每一所述 LED元件 20通 过固晶制程安装于所述 PCB板 12上。
所述量子条 40包括: 一玻璃管 42 以及密封于所述玻璃管 42 内的量 子点材料 44, 所述限位槽的深度 d等于或大于所述玻璃管 42 管壁的厚 度， 在保证其等于或大于所述玻璃管 42 管壁的厚度的前提下， 该限位槽 的深度 d应尽量小， 从而可以通过轻压量子条 40， 快速地将量子条 40安 装进限位槽内， 且不损伤量子条 40。 所述玻璃管 42 端部截面为一矩形， 有利于实现该 LED封装件的薄型化。 值得一提的是， 本实施例中 LED芯 片为蓝光芯片， 其发出的光为蓝光， 若 LED 芯片发出的光线从量子条 40 的边缘出去， 則该出去的光线为蓝光， 与所需不符。 为了避免上述情况的 发生， 第一支架 10四个侧壁 14上的限位槽的深度 d等于 （或略大于） 量 子条 12的玻璃管 42管壁的厚度， 以防止 LED芯片发出的蓝光透过该玻 璃管 42四周管壁而透射出去， 此时 LED芯片发出的蓝光全部经过量子条 40中的量子点材料 44， 则最后出射的光线均为白光。
所述封装胶 30用于固定位于其上方的量子条 12以及用于保护裸露的
LED芯片 （及棵露的金线） ， 所述封装胶 30优选为硅胶。
请参阅图 11 及图 12， 作为可供选择的另一较佳实施例， 所述数个 LED元件 20'为数个 LED灯， 其通过回流焊制程安装于所述 PCB板 12 上。 具体的， 每一所述 LED元件 20'包括: 一第二支架 22、 以及安装于所 述第二支架 22上且与所述第二支架 22电性连.接的 LED芯片 24, 借第二 支架 22能够更好地保护 LED芯片 24, 同时也可以增加量子条 40与 PCB 板 12的整体高度。 所述 LED芯片 24 为正装蓝光芯片或倒装蓝光芯片； 当所述 LED芯片 24为正装蓝光芯片时， 所述 LED芯片 24通过固晶制程 及打金线制程安装于所述第二支架 22上， 当所述 LED芯片 24为倒装蓝 光芯片时， 所述 LED芯片 24通过固晶制程安装于所述第二支架 22上。
请参阅图 13， 并同时结合参阔图 8至图 12, 本发明还提供一种 LED 封装件的制作方法， 包括以下步骤：
步骤 1、 提供一第一支架 10, 所述第一支架 10包括一 PCB板 12以及 形成于所述 PCB板 12四周边缘上的四个侧壁 14, 所述四个侧壁 14的上 端均设有一安装部 16, 所述四个侧壁 14围成一容置空间 18。
该第一支架 10的形成方式为： 对已经蚀刻好电路结构的 PCB板！2釆 用注塑成型的方式， 在该 PCB板 12上形成四个侧壁 14。 所述四个侧壁 14 的上端均设有一安装部 16, 在本实施例中， 所述安装部 】6为一限位槽， 该限位槽的宽度等于 （或略大于）量子条的边缘厚度， 以保证 LED 芯片 发出的蓝光全部经过量子条中的量子点材料， 则最后出射的光均为白光。 所述 个侧壁 14 的材质优选为聚对苯二甲酸 1，4-环己烷二甲醇酯 ( PCX ) 。
步骤 2、 提供数个 LED元件 20 , 并将该数个 LED元件 20安装于所述 第一支架 10的 PCB板 12上， 且所述数个 LED元件 20设于容置空间 18 内， 所述数个 LED元件 20与 PCB板 12电性连接。
作为一较佳实施例， 所述数个 LED元件 20为数个 LED芯片， 如图 8 至图 10所示„ 在该步骤中， 该数个 LED芯片采用 COB ( chip on board ) 贴片方式直接固晶于 PCB板 12， 以形成 LED灯条的效果。 具体的， 所述 LED 芯片为正装蓝光芯片或倒装蓝光芯片， 当所述 LED 芯片为正装蓝光 芯片时， 则在该步骤中， 通过固晶制程及打金线制程将所述 LED 芯片安 装于所述 PCB板 12上； 当所述 LED 芯片为倒装蓝光芯片时， 在该步骤 中， 仅通过固晶制程就可以将所述 LED芯片安装于所述 PCB板 12上。
作为可供选择的另一较佳实施例， 所述数个 LED元件 20，为数个 LED 灯， 如图 1 1 及图 12 所示。 在该步驟中， 其通过回流焊制程安装于所述 PCB板 12上， 以形成 LED灯条的效果。 具体的， 每一所述 LED元件 20， 包括： 一第二支架 22、 以及安装于所述第二支架 22上且与所述第二支架 22 电性连接的 LED 芯片 24, 借第二支架 22 能够更.好地保护 LED 芯片 24， 同时也可以增加量子条 40与 PCB板 12的整体高度。 所述 LED芯片 24为正装蓝光芯片或倒装蓝光芯片； 当所述 LED芯片 24为正装蓝光芯片 时， 所述 LED芯片 24通过固晶制程及打金线制程安装于所述第二支架 22 上， 当所述 LED芯片 24为倒装蓝光芯片时， 所述 LED芯片 24通过固晶 制程安装于所述第二支架 22上。
步骤 3、 往所述第一支架 10的容置空间 18灌入封装胶 30。
所述封装胶 30用于保护棵露的 LED芯片 （及裸露的金线） ， 该封装 胶填充于容置空间 18中的高度刚好到达该限位槽 16, 所述封装胶 30优选 为硅胶。
步骤 4、 提供一量子条 40, 并将所述量子条 40安装于所述四个侧壁 14的安装部 16上， 所述量子条 40位于所述封装胶 30的上方。
在本实施例中， 所述安装部 16 为一限位槽， 所述限位槽的高度 h等 于所述量子条 40的厚度， 所述步骤 4中所述量子条 40卡合安装于该限位 槽上。
所述量子条 40 包括： 一玻璃管 42以及密封于所述玻璃管 42 内的量 子点材料 44， 所述限位槽的深度 d 等于或大于所述玻璃管 42 管壁的厚 度， 在保证其等于或大于所述玻璃管 42 管壁的厚度的前提下， 该限位槽 的深度 d应尽量小， 从而可以通过轻压量子条 40， 快速地将量子条 40安 装进限位槽内， 且不损伤量子条 40。 所述玻璃管 42端部截面为一矩形， 有利于实现该 LED封装件的薄型化。 值得一提的是， 本实施例中 LED芯 片为蓝光芯片， 其发出的光为蓝光， 若 LED 芯片发出的光线从量子条 40 的边缘出去， 則该出去的光线为蓝光， 与所需不符。 为了避免上述情况的 发生， 第一支架 10四个侧壁 14上的限位槽的深度 d等于 (或略大于 )量 子条 12的玻璃管 42管壁的厚度， 以防止 LED芯片发出的蓝光透过该玻 璃管 42 周管壁而透射出去， 此时 LED芯片发出的蓝光全部经过量子条 40中的量子点材料 44, 则最后出射的光线均为白光， 进而使得 LED芯片 发出的光线全部通过该量子条 40 中的量子点材料 44， 以实现最后出射的 光线均为白光。
步骤 5、 固化该封装胶 30。
在该步骤中， 采用加热的方式固化封装胶， 该封装胶具有粘性， 固化 后的封装胶可以很好地将量子条 40固定于第一支架 10上。
综上所述， 本发明提供一种 LED 封装件及其制作方法， 将量子条与 LED元件一体化封装， 安装牢固， 降低了应用量子条的背光模组的组装.难 度， 同时也避免了现有技术中出现的 LED 元件与量子
漏光问题， 进一步减小了应用该 LED封装件的电视机的边框宽度
以上所述:
Figure imgf000011_0001
方案和技术构思作出其他各种相应的改变和变形， 而所有这些改变和变形 要求的保护范围。

Claims

权 利 要 求 一种 LED封装件, 包括： 第一支架、 数个 LED元件、 封装胶以及 量子条， 所述第一支架包括一 PCB板以及形成于所述 PCB板四周边缘上 的四个倒壁， 所述四个侧壁围成一容置空间， 所述数个 LED 元件安装于 所述 PCB板上且位于所述容置空间内， 并与所述 PCB板电性连接， 所述 封装胶填充于所述容置空间中， 所述 个侧壁的上端均设有一安装部， 所 述量子条安装于所述安装部上， 所述量子条位于所述封装胶的上方， 所述 第一支架、 数个 LED元件及量子条一体化封装， 以固定组合在一起。
2、 如权利要求 1 所述的 LED封装件， 其中， 所述安装部为一限位 槽， 所述限位槽的高度等于所述量子条的厚度， 以使所述量子条卡合安装 于该限位槽上。
3、 如权利要求 1所述的 LED封装件， 其中， 所述数个 LED元件为数 个 LED芯片 , 所述 LED芯片为正装蓝光芯片或倒装蓝光芯片； 当所述数 个 LED元件为数个正装蓝光芯片时， 每一所述 LED元件通过固晶制程及 打金线制程安装于所述 PCB板上， 当所述数个 LED元件为数个倒装蓝光 芯片时， 每一所述 LED元件通过固晶制程安装于所述 PCB板上。
4、 如权利要求 1 所述的 LED封装件， 其中， 每一所述 LED元件包 括： 一第二支架、 以及安装于所述第二支架上且与所述第二支架电性连接 的 LED芯片， 所述数个 LED元件通过回流焊制程安装于所述 PCB板上， 所述 LED芯片为正装蓝光芯片或倒装蓝光芯片； 当所述 LED芯片为正装 蓝光芯片时， 所述 LED 芯片通过固晶制程及打金线制程安装于所述第二 支架上， 当所述 LED芯片为倒装蓝光芯片时， 所述 LED芯片通过固晶制 程安装于所述第二支架上。
5、 如权利要求 2所述的 LED封装件， 其中， 所述量子条包括： 一玻 璃管以及密封于所述玻璃管内的量子点材料， 所述限位槽的深度等于或大 于所述玻璃管管壁的厚度， 所述玻璃管端部截面为一矩形； 所述四个側壁 的材.质为聚对苯二甲酸 1,4-环己烷二甲醇酯； 所述封装胶为硅胶。
6、 一种 LED封装件的制作方法， 包括以下步骤:
步骤 1、 提供一第一支架， 所述第一支架包括一 PCB板以及形成于所 述 PCB板四周边缘上的四个侧壁， 所述四个侧壁的上端均设有一安装部， 所述四个倒壁围成一容置空间；
步糠 2、 提供数个 LED元件， 并将该数个 LED元件安装于所述第一 支架的 PCB板上， 且所述数个 LED元件设于容置空间内， 所述数个 LED 元件与 PCB板电性连接；
步骤 3、 往所述第一支架的容置空间灌入封装胶；
步骤 4、 提供一量子条， 并将所述量子条安装于所述四个倒壁的安装 部上， 所述量子条位于所述封装 的上方；
步骤 5、 固化该封装胶。
7、 如权利要求 6 所述的 LED 封装件的制作方法， 其中， 所述数个 LED元件为数个 LED芯片， 所述 LED芯片为正装蓝光芯片或倒装蓝光芯 片； 当所述 LED 芯片为正装蓝光芯片时， 所述步骤 2 中通过固晶制程及 打金线制程将所述 LED芯片安装于所述 PCB板上； 当所述 LED芯片为倒 装蓝光芯片时， 所述步骤 2 中通过固晶制程将所述 LED 芯片安装于所述 PCB板上。
8 , 如权利要求 6 所述的 LED封装件的制作方法， 其中， 每一所述 LED元件包括： 第二支架以及安装于所述第二支架上且与所述第二支架电 性连.接的 LED芯片， 所述步骤 2中所述数个 LED元件通过回流焊制程安 装于所述 PCB板上， 所述 LED芯片为正装蓝光芯片或倒装蓝光芯片； 当 所述 LED芯片为正装蓝光芯片时， 所述 LED芯片通过固晶制程及打金线 制程安装于所述第二支架上， 当所述 LED 芯片为倒装蓝光芯片时， 所述 LED芯片通过固晶制程安装于所述第二支架上。
9、 如权利要求 6所述的 LED封装件的制作方法， 其中， 所述安装部 为一限位槽， 所述限位槽的高度等于所述量子条的厚度， 所述步骤 4 中所 述量子条卡合安装于该限位槽上； 所述步骤 5 中采用加热的方式固化封装 胶。
10 , 如权利要求 7 所述的 LED封装件的制作方法， 其中， 所述量子 条包括： 一玻璃管以及密封于所述玻璃管内的量子点材料， 所述限位槽的 深度等于或大于所述玻璃管管壁的厚度， 所述玻璃管端部截面为一矩形； 所述四个侧壁的材质为聚对苯二甲酸 1,4环己烷二曱醇酯； 所述封装胶为 硅胶。
11、 一种 LED封装件的制作方法， 包括以下步骤：
步骤 1、 提供一第一支架， 所述第一支架包括一 PCB板以及形成于所 述 PCB板四周边缘上的四个侧壁， 所述四个侧壁的上端均设有一安装部， 所述四个侧壁围成一容置空间；
步骤 2、 提供数个 LED元件， 并将该数个 LED元件安装于所述第一 支架的 PCB板上， 且所述数个 LED元件设于容置空间内， 所述数个 LED
.元件与 PCB板电' 连接；
步骤 3、 往所述第一支架的容置空间灌入封装胶；
步骤 4、 提供一量子条， 并将所述量子条安装于所述四个侧壁的安装 部上， 所述量子条位于所述封装胶的上方；
步骤 5、 固化该封装胶；
其中， 所述数个 LED元件为数个 LED芯片， 所述 LED芯片为正装蓝 光芯片或倒装蓝光芯片； 当所述 LED芯片为正装蓝光芯片时， 所述步骤 2 中通过固晶制程及打金线制程将所述 LED芯片安装于所述 PCB板上； 当 所述 LED 芯片为倒装蓝光芯片时， 所述步骤 2 中通过固晶制程将所述 LED芯片安装于所述 PCB fei上。
12, 如权利要求 11 所述的 LED封装件的制作方法, 其中， 每一所述 LED元件包括： 第二支架以及安装于所述第二支架上且与所述第二支架电 性连接的 LED芯片， 所述步骤 2中所述数个 LED元件通过回流焊制程安 装于所述 PCB板上， 所述 LED芯片为正装蓝光芯片或倒装蓝光芯片； 当 所述 LED芯片为正装蓝光芯片时， 所述 LED芯片通过固晶制程及打金线 制程安装于所述第二支架上， 当所述 LED 芯片为倒装蓝光芯片时， 所述 LED芯片通过固晶制程安装于所述第二支架上。
13 , 如权利要求 11 所述的 LED封装件的制作方法， 其中， 所述安装 部为一限位槽， 所述限位槽的高度等于所述量子条的厚度， 所述步驟 4 中 所述量子条卡合安装于该限位槽上； 所述步骤 5 中采用加热的方式固化封
14 , 如权利要求 12所述的 LED封装件的制作方法， 其中， 所述量子 条包括： 一玻璃管以及密封于所述玻璃管内的量子点材料， 所述限位槽的 深度等于或大于所述玻璃管管壁的厚度， 所述玻璃管端部截面为一矩形； 所述四个侧壁的材质为聚对苯二甲酸 1，4环己烷二甲醇酯； 所述封装胶为 硅胶。
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