White light LED packaging structure suitable for commercial display and packaging method thereof

Abstract

The invention relates to a white light LED packaging structure suitable for commercial display and a packaging method thereof, and relates to the technical field of LED packaging, the packaging structure comprises a substrate, an LED chip, a packaging ring frame and a colored light film, one axial end of the packaging ring frame is connected with the substrate, the other end of the packaging ring frame is connected with the colored light film, the LED chip is fixed on the substrate, and the LED chip is located in the packaging ring frame; the colored light film comprises a fluorescent layer, fluorescent powder is dispersed in the fluorescent layer, the fluorescent layer is arranged on the packaging ring frame, and the packaging ring frame is sealed by the fluorescent layer; the colored light film further comprises an electric control light supplementing layer, the electric control light supplementing layer is arranged on the side, away from the packaging ring frame, of the fluorescent layer, light emitted by the LED chip and the fluorescent layer can penetrate through the electric control light supplementing layer, and the electric control light supplementing layer is used for active light supplementing. Through active light supplement of the electrically controlled light supplement layer, the quality of white light emitted by the LED can be effectively recovered, so that the final display effect is improved.

Description

Technical Field

[0001] This application relates to the technical field of LED packaging, and in particular, to a white LED packaging structure suitable for commercial displays and its packaging method. Background Art

[0002] Most commercial display devices (such as advertising screens, information screens, conference tablets, etc.) use liquid crystal display technology (LCD). Since LCD itself does not emit light, it relies on a backlight source to provide brightness. Currently, CCFL (cold cathode fluorescent lamp) is used for the backlight, but LED backlight has gradually become the mainstream due to its advantages such as energy saving, thinness, and high brightness uniformity.

[0003] Currently, there are mainly two ways for white LEDs to emit light. According to the number of light-emitting diodes used, they can be divided into two types: polycrystalline type and single-crystalline type. Polycrystalline white LEDs use two or more complementary color light-emitting diodes or RGB chips in combination, and white light is formed through the mixing of multiple colors of light. Polycrystalline white LEDs use multiple light-emitting elements, and the assembly and production methods are relatively complex, and the design of the drive circuit is also relatively complex. Therefore, single-crystalline white LEDs have been developed.

[0004] Single-crystalline white LEDs can emit white light through a single LED chip. Its light-emitting principle is: a layer of phosphor is coated on the surface of the LED chip, and the blue light emitted by the LED chip excites the phosphor, so that the phosphor generates yellow light, and the yellow light emitted by the phosphor is mixed with the blue light emitted by the LED chip to produce white light.

[0005] In view of the above-related technologies, based on the light-emitting principle of existing single-crystalline white LEDs, the thickness of the phosphor layer on the surface of the LED chip will directly affect the final white light quality. Therefore, when there is a deviation in the thickness of the phosphor layer on the surface of the LED chip, it will cause uneven color temperature distribution and a decrease in the color rendering index of the white light emitted by the single-crystalline white LED, seriously affecting the final display effect. Summary of the Invention

[0006] This application provides a white LED packaging structure suitable for commercial displays and its packaging method, aiming to reduce the impact of phosphor problems on the white light quality emitted by LEDs, restore the white light quality emitted by LEDs, and thus improve the final display effect.

[0007] In a first aspect, a white LED packaging structure suitable for commercial displays provided by this application adopts the following technical solution: A white light LED packaging structure suitable for commercial display, comprising a substrate, an LED chip, a packaging ring frame and a color light film. One axial end of the packaging ring frame is connected to the substrate, and the other end is connected to the color light film. The LED chip is fixed on the substrate, and the LED chip is located inside the packaging ring frame. The color light film includes a fluorescent layer in which phosphor powder is dispersed. The fluorescent layer is disposed on the packaging ring frame, and the fluorescent layer encloses the packaging ring frame. The color light film further includes an electronically controlled supplementary light layer disposed on a side of the fluorescent layer facing away from the packaging ring frame. The light emitted by the LED chip and the fluorescent layer can pass through the electronically controlled supplementary light layer, and the electronically controlled supplementary light layer is used for active supplementary lighting.

[0008] By adopting the above technical solution, the cooperative setting of the LED chip and the fluorescent layer in the color light film enables the blue light emitted by the LED chip to excite the phosphor powder in the fluorescent layer when the LED chip emits light, so that the phosphor powder emits yellow light. After the blue light and the yellow light are mixed, a preliminary white light is formed, which meets the basic function of the white light LED.

[0009] On this basis, both the blue light emitted by the LED chip and the yellow light emitted by the fluorescent layer can pass through the electronically controlled supplementary light layer, which can ensure that the preliminary white light can pass through the electronically controlled supplementary light layer, and thus enables the white light LED to be used normally.

[0010] Since the electronically controlled supplementary light layer can actively emit light, it can supplement the above-mentioned preliminary white light, so that the color temperature distribution of the white light emitted by the LED is uniform and the color rendering index increases, which can improve the quality of the white light emitted by the LED.

[0011] Therefore, when there are problems with the phosphor powder in the fluorescent layer, through the active supplementary lighting of the electronically controlled supplementary light layer, the quality of the white light emitted by the LED can be effectively restored, thereby improving the final display effect.

[0012] Optionally, it further includes an installation tube sleeved outside the packaging ring frame. The installation tube is coaxially inserted and matched with the packaging ring frame. The fluorescent layer is disposed inside the installation tube, and the fluorescent layer encloses the installation tube.

[0013] By adopting the above technical solution, the setting of the installation tube can provide stable support for the fluorescent layer, and the coaxial insertion and matching of the installation tube and the packaging ring frame facilitate the rapid installation of the fluorescent layer and the assembly of the LED packaging structure.

[0014] The fluorescent layer is disposed inside the installation tube and encloses the installation tube, which can effectively prevent light leakage between the fluorescent layer and the LED chip, and improve the uniformity and quality of the white light.

[0015] Optionally, a first elastic clamping ring is sleeved on the outer side of the packaging ring frame, the mounting tube is sleeved on the outer side of the first elastic clamping ring, the inner side wall of the first elastic clamping ring contacts the packaging ring frame, and the outer side wall of the first elastic clamping ring contacts the mounting tube.

[0016] By adopting the above technical solution, the first elastic clamping ring can increase the stability of the plug-in connection between the mounting tube and the packaging ring frame through its own elastic deformation, thereby increasing the stability of the connection between the mounting tube and the packaging ring frame.

[0017] Optionally, there are multiple fluorescent layers, all of which are located between the electrically controlled fill light layer and the packaging ring frame, and the multiple fluorescent layers are stacked in sequence along the spacing direction between the electrically controlled fill light layer and the packaging ring frame.

[0018] By adopting the above technical solution and setting up multiple fluorescent layers, the blue light emitted by the LED chip will pass through all fluorescent layers in sequence, and each fluorescent layer can convert the blue light emitted by the LED chip. This allows each layer of phosphor to specifically adjust the wavelength and intensity of the light, effectively reducing the white light quality fluctuations caused by uneven thickness or deposition order problems of a single fluorescent layer, thereby improving the uniformity and quality of white light generation.

[0019] In addition, this design also allows for flexible configuration of the type and concentration of phosphors in each phosphor layer according to different application scenarios, further optimizing the color temperature and color rendering index of the final output white light.

[0020] Optionally, the fluorescent layer is coaxially plugged into the mounting tube, and a plurality of the fluorescent layers are stacked in sequence along the axial direction of the mounting tube.

[0021] By adopting the above technical solution, the fluorescent layer and the installation tube are coaxially plugged together, so that the fluorescent layer can be stably installed in the installation tube, and the replacement and adjustment of the fluorescent layer are convenient.

[0022] Several phosphor layers are stacked in sequence along the axial direction of the mounting tube. This structural design enables the layered arrangement of different types of phosphors, thereby optimizing the light mixing effect and improving the quality and uniformity of white light.

[0023] Optionally, a support ring is provided in the mounting tube, and the support ring is coaxially connected to the mounting tube; a closed tube is sleeved on one end of the mounting tube along its own axial direction away from the substrate, and the closed tube is threadedly connected to the mounting tube, and a pressure ring is provided in the closed tube, and the pressure ring is coaxially connected to the closed tube; the pressure ring and the support ring are coaxially spaced, and several of the fluorescent layers are located between the pressure ring and the support ring, and the support ring and the pressure ring both conflict with adjacent fluorescent layers.

[0024] By adopting the above technical solution, since the closing tube is screwed onto the installation tube, when the closing tube is turned, the closing tube moves along its own axis on the installation tube, which can adjust the distance between the support ring and the pressing ring and also enable the disassembly and installation of the closing tube.

[0025] On this basis, since several fluorescent layers are all stacked between the support ring and the pressing ring, after the closing tube is turned, both the pressing ring and the support ring can press the corresponding adjacent fluorescent layers, which can fix several fluorescent layers and thus ensure the stability and optical performance of the fluorescent layers.

[0026] Meanwhile, when it is necessary to replace or disassemble and assemble the fluorescent layers, the closing tube can be removed by turning the closing tube, which facilitates the installation or removal of the fluorescent layers.

[0027] Optionally, it further includes a fixing tube, the fixing tube is sleeved outside the installation tube, the fixing tube is in coaxial plug-in fit with the installation tube, the electric control light supplement layer is arranged in the fixing tube, and the electric control light supplement layer closes the fixing tube.

[0028] By adopting the above technical solution, the setting of the fixing tube can provide a stable installation environment for the electric control light supplement layer, ensure the relative position between the electric control light supplement layer and the installation tube is fixed, and thus improve the stability of the overall structure.

[0029] In addition, since the fixing tube is in plug-in fit with the installation tube, this facilitates the disassembly and assembly of the fixing tube and also facilitates the disassembly and assembly of the electric control light supplement layer.

[0030] Optionally, the electric control light supplement layer includes an electric control component, a transparent base layer and several electroluminescent films. Several of the electroluminescent films are all embedded in the transparent base layer, and several of the electroluminescent films are arranged at intervals, the electric control component is located outside the transparent base layer, and several of the electroluminescent films are all electrically connected to the electric control component.

[0031] By adopting the above technical solution, several electroluminescent films in the electric control light supplement layer are embedded in the transparent base layer and arranged at intervals, which enables the light emitted by the LED chip and the light emitted by the fluorescent layer to both uniformly pass through the transparent base layer, and this avoids the electric control light supplement layer blocking the light emitted by the LED chip and the fluorescent layer.

[0032] The electric control component is located outside the transparent base layer and is used to control the light emission of the electroluminescent films, realizing the regulation of the electroluminescent films. Specifically, several electroluminescent films can emit specific light according to actual needs under the control of the electric control component, so as to effectively compensate for the quality defects existing in the initial white light mixed by the blue light emitted by the LED chip and the yellow light emitted by the fluorescent layer, and improve the final white light quality and white light uniformity.

[0033] Optionally, the transparent base layer includes an upper substrate, an upper conductive layer, a lower conductive layer, and a lower substrate, and the upper substrate, the upper conductive layer, the electroluminescent film, the lower conductive layer, and the lower substrate are stacked in sequence; the electric control component further includes an electric control chip, a positive conductive wire, and a negative conductive wire, both the positive conductive wire and the negative conductive wire are connected to the electric control chip, and the positive conductive wire is located between the upper substrate and the upper conductive layer, and the negative conductive wire is located between the lower conductive layer and the lower substrate.

[0034] By adopting the above technical solution, through the arrangement of the upper substrate and the lower substrate, the transparent base layer can prevent the influence of the external environment on the electroluminescent film. Through the arrangement of the upper conductive layer and the lower conductive layer, the transparent base layer can provide a stable electric field environment for the electroluminescent film, enabling the light-emitting layer to emit light efficiently under the action of the electric field. That is to say, through the coordinated arrangement of the electric control chip, the positive conductive wire, and the negative conductive wire, the electric control chip can provide a stable electric field environment for the electroluminescent film, thereby realizing the control function of the electroluminescent film, which can freely control the turning on and off of the supplementary light. At the same time, through pre-adjustment, the electric control chip can also regulate the intensity of the light emitted by the electroluminescent film, thus meeting the functions of the electric control supplementary light layer.

[0035] In a second aspect, a white light LED packaging method suitable for commercial displays provided by the present application adopts the following technical solution: A white light LED packaging method suitable for commercial displays, used for the white light LED packaging structure described above, includes the following steps: First step, fix the LED chip to the substrate and make the LED chip located inside the packaging ring frame; Second step, add a fluorescent layer to the packaging ring frame; Third step, perform white light detection and determine the supplementary light requirements of the electric control supplementary light layer; Fourth step, according to the obtained supplementary light requirements of the electric control supplementary light layer, add the corresponding electric control supplementary light layer to the fluorescent layer; Fifth step, perform LED light emission debugging; Sixth step, encapsulate and fix with glue.

[0036] By adopting the above technical solutions, a white light LED packaging method suitable for commercial displays is achieved. By fixing the LED chip onto the substrate and within the packaging ring frame, it ensures that the light emitted by the LED chip can be effectively guided to the subsequent phosphor layer and the electro-controlled light compensation layer, thereby improving the light utilization rate and the stability of the overall structure. Adding a phosphor layer on the packaging ring frame enables the blue light emitted by the LED chip to excite the phosphor to generate light of other colors, initially forming white light, and at the same time reducing the impact of uneven phosphor layer thickness on the white light quality. Determining the light compensation requirements of the electro-controlled light compensation layer through white light detection realizes precise control of the white light quality, further enhancing the uniformity and brightness of the white light. Installing the corresponding electro-controlled light compensation layer according to the light compensation requirements of the electro-controlled light compensation layer, and using the electroluminescent film to emit light of specific colors and intensities to actively compensate for the insufficient components in the white light, significantly improves the quality of the white light. Conducting LED light debugging and dynamically adjusting the light emission parameters of the electro-controlled light compensation layer according to the detection results to ensure that the finally output white light meets the high standards of commercial display devices. Finally, fixing by dispensing encapsulation protects the internal components from the external environment and enhances the reliability and durability of the entire packaging structure. Through the above packaging method, the quality of the white light emitted by the final LED can be effectively improved.

[0037] In summary, the present application includes at least one of the following beneficial technical effects: 1. Through the cooperation of the electro-controlled light compensation layer, the present application can effectively compensate for the impact of the phosphor problem on the quality of the white light emitted by the LED, thereby effectively restoring the quality of the white light emitted by the LED and improving the final display effect.

[0038] 2. In the present application, the electro-controlled light compensation layer can actively compensate for light according to actual needs, flexibly adjust the color temperature and color rendering index of the white light, and significantly improve the quality of the white light emitted by the LED.

[0039] 3. In the present application, the combined design of the installation tube and the fixing tube facilitates the assembly of the phosphor layer and the electro-controlled light compensation layer, and at the same time can prevent light leakage, thereby further optimizing the white light output effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 is the overall structural schematic diagram of the white light LED packaging structure of Embodiment 1 of the present application.

[0041] Figure 2 is the sectional structural schematic diagram of the white light LED packaging structure of Embodiment 1 of the present application.

[0042] Figure 3 is the exploded structural schematic diagram of the white light LED packaging structure of Embodiment 1 of the present application.

[0043] Figure 4 is the overall structural schematic diagram of the electro-controlled light compensation layer of Embodiment 1 of the present application.

[0044] Figure 5 It is a schematic cross-sectional structural diagram of the electrically controlled light-filling layer of Example 1 of the present application.

[0045] Figure 6 It is a schematic diagram of the exploded structure of the transparent base layer and the electroluminescent film in Example 1 of the present application.

[0046] Figure 7 This is a schematic cross-sectional structural diagram of the white light LED packaging structure of Example 2 of the present application.

[0047] Figure 8 This is a schematic cross-sectional structural diagram of the white light LED packaging structure of Example 3 of the present application.

[0048] In the figure, 1, substrate; 11, screw hole; 12, conductive hole; 2, LED chip; 3, packaging ring frame; 4, color film; 41, phosphor layer; 42, electric control light layer; 421, electric control unit; 4211, electric control chip; 4212, positive conductive wire; 4213, negative conductive wire; 4214, connecting wire; 422, transparent base layer; 4221, upper substrate; 4222, upper conductive layer; 4223, lower conductive layer; 4224, lower substrate; 4225, supporting layer; 4226, light-emitting through hole; 423, electroluminescent film; 4231, insulating layer; 4232, light-emitting layer; 5, mounting tube; 51, mounting plate; 52, mounting screw; 53, supporting ring; 54, closing tube; 55, pressing ring; 6, first elastic clamping ring; 7, fixing tube; 711, wire trough; 712, external plate; 713, external screw; 8, second elastic clamping ring. DETAILED DESCRIPTION

[0049] The following is combined with Figure 1 -Attached Figure 8 , further details of this application are given.

[0050] Example 1: A white light LED packaging structure suitable for commercial display, referring to Figure 1 and Figure 2 , including a substrate 1, an LED chip 2 and a packaging ring frame 3. The LED chip 2 and the packaging ring frame 3 are both fixed on the substrate 1, and the packaging ring frame 3 is arranged around the LED chip 2. A color film 4 is provided at one end of the packaging ring frame 3 along its own axial direction away from the substrate 1, and the color film 4 closes the packaging ring frame 3.

[0051] Reference Figure 1 and Figure 2 The color film 4 includes a fluorescent layer 41 and an electrically controlled light-filling layer 42 , and the fluorescent layer 41 and the electrically controlled light-filling layer 42 are stacked along the axial direction of the packaging ring frame 3 .

[0052] Reference Figure 2, when the LED is working, the LED chip 2 emits blue light. When the blue light passes through the fluorescent layer 41, the fluorescent layer 41 is excited, and thus the fluorescent layer 41 emits light of a corresponding color. At this time, the light emitted by the LED chip 2 and the light emitted by the fluorescent layer 41 pass through the electronically controlled supplementary light layer 42, and the electronically controlled supplementary light layer 42 actively emits light of a corresponding color. At this time, the light emitted by the LED chip 2, the light emitted by the fluorescent layer 41, and the light emitted by the electronically controlled supplementary light layer 42 are mixed into white light after passing through the electronically controlled supplementary light layer 42.

[0053] Among them, the intensity and color of the light emitted by the electronically controlled supplementary light layer 42 are both controlled according to the quality of the preliminary white light after the light emitted by the LED chip 2 and the light emitted by the fluorescent layer 41 are mixed, thereby making the quality of the final white light emitted by the LED relatively high.

[0054] Refer to Figure 2 , in this embodiment, phosphor is dispersed in the fluorescent layer 41. Among them, the fluorescent layer 41 is made of epoxy resin or transparent silicone material, and the phosphor is yellow phosphor.

[0055] Since the fluorescent layer 41 is made of epoxy resin or transparent silicone material, the fluorescent layer 41 has high light transmittance, so that the blue light emitted by the LED chip 2 can pass through the fluorescent layer 41. At the same time, when the LED chip 2 emits blue light, the blue light passes through the fluorescent layer 41 and excites the phosphor. After being excited, the phosphor emits yellow light, and the blue light and the yellow light are mixed to form preliminary white light. Such a design can effectively reduce the influence of the uneven thickness of the phosphor layer on the quality of white light and improve the uniformity of white light generation.

[0056] Refer to Figure 2 and Figure 3 , the white LED packaging structure further includes an installation tube 5. The installation tube 5 is coaxially sleeved outside the packaging ring frame 3, and the installation tube 5 is in plug-in fit with the packaging ring frame 3. The fluorescent layer 41 is arranged inside the upper end of the installation tube 5. The fluorescent layer 41 is fixedly connected to the inner side wall of the installation tube 5, and the fluorescent layer 41 closes the installation tube 5. One axial end of the packaging ring frame 3 is connected to the substrate 1, and the other end abuts against the fluorescent layer 41.

[0057] Based on the setting of the installation tube 5, after the installation tube 5 is sleeved on the packaging ring frame 3, the fluorescent layer 41 is superposed on one end of the packaging ring frame 3, and the fluorescent layer 41 closes the packaging ring frame 3, which is convenient for the installation of the fluorescent layer 41. And when the LED chip 2 emits blue light, all the blue light emitted from the inside of the packaging ring frame 3 can enter the fluorescent layer 41, which can prevent the occurrence of blue light leakage and thus improve the quality of the final white light.

[0058] Refer to Figure 2 and Figure 3, in this embodiment, a first elastic clamping ring 6 is sleeved outside the encapsulation ring frame 3, the installation pipe 5 is sleeved outside the first elastic clamping ring 6, and the inner side wall of the first elastic clamping ring 6 abuts against the encapsulation ring frame 3, and the outer side wall of the first elastic clamping ring 6 is clamped with the installation pipe 5.

[0059] With the setting of the first elastic clamping ring 6, after the installation pipe 5 is sleeved onto the encapsulation ring frame 3, the first elastic clamping ring 6 can increase the installation stability of the installation pipe 5 through its own elastic deformation, which can provide the stability of the entire LED encapsulation structure.

[0060] Refer to Figure 2 and Figure 3 , in this embodiment, a plurality of mounting plates 51 are provided on the outer side wall of the lower end of the installation pipe 5. The plurality of mounting plates 51 are sequentially arranged at intervals along the circumferential direction of the installation pipe 5, and the plurality of mounting plates 51 are arranged in a circular pattern. The mounting plates 51 are fixedly connected to the outer side wall of the installation pipe 5. Mounting holes are formed through the mounting plates 51. The axial direction of the mounting holes is arranged along the axial direction of the installation pipe 5, and mounting screws 52 are inserted into the mounting holes.

[0061] Refer to Figure 2 and Figure 3 , a plurality of screw holes 11 are formed in the substrate 1. The screw holes 11 are arranged in one-to-one correspondence with the mounting holes. The screw holes 11 are coaxially communicated with the corresponding mounting holes. The mounting screws 52 are inserted into and cooperate with the corresponding screw holes 11, and the mounting screws 52 are screwed with the corresponding screw holes 11.

[0062] The cooperation setting of the mounting plates 51 and the mounting screws 52 on the installation pipe 5 can increase the installation stability of the installation pipe 5. At the same time, this can also increase the installation stability of the fluorescent layer 41.

[0063] Refer to Figure 4 and Figure 5 , the electric control light supplement layer 42 includes an electric control component 421, a transparent base layer 422 and a plurality of electroluminescent films 423. The plurality of electroluminescent films 423 are embedded in the transparent base layer 422, and the plurality of electroluminescent films 423 are arranged at intervals from each other. The electric control component 421 is arranged outside the transparent base layer 422, and the plurality of electroluminescent films 423 are all electrically connected to the electric control component 421.

[0064] Under the action of the electric control component 421, when the electric control component 421 powers on the plurality of electroluminescent films 423, the plurality of electroluminescent films 423 all emit light of corresponding colors, which enables the electric control light supplement layer 42 to realize the light supplement function.

[0065] Refer to Figure 2 and Figure 5, due to the setting of the transparent base layer 422 in the electronically controlled light supplementing layer 42, the light passing through the fluorescent layer 41 will directly enter the transparent base layer 422 and pass through the transparent base layer 422, which ensures that the light emitted by the LED chip 2 will not be blocked by the electronically controlled light supplementing layer 42, ensuring the normal use of the LED.

[0066] Referring to Figure 2 and Figure 5 , since several electroluminescent films 423 can emit light of corresponding colors, there are three kinds of light passing through the transparent base layer 422. These three kinds of light are the blue light emitted by the LED chip 2, the yellow light emitted after the phosphor is activated, and the light emitted by the electroluminescent film 423. These three kinds of light are mixed into white light after passing through the electronically controlled light supplementing layer 42. Among them, the blue light emitted by the LED chip 2 and the yellow light emitted after the phosphor is activated can be mixed to produce preliminary white light, and the light emitted by the electroluminescent film 423 is used to improve the quality of the preliminary white light. Therefore, the color and light intensity of the light emitted by the electroluminescent film 423 are selected or adjusted according to actual needs.

[0067] In this embodiment, referring to Figure 5 and Figure 6 , the transparent base layer 422 includes an upper substrate 4221, an upper conductive layer 4222, a lower conductive layer 4223, and a lower substrate 4224. The electroluminescent film 423 includes an insulating layer 4231 and a light-emitting layer 4232. The upper substrate 4221, the upper conductive layer 4222, the insulating layer 4231, the light-emitting layer 4232, the lower conductive layer 4223, and the lower substrate 4224 are stacked in sequence, and the upper conductive layer 4222 is electrically connected to the insulating layer 4231, and the light-emitting layer 4232 is connected to the lower conductive layer 4223.

[0068] In this embodiment, referring to Figure 4 and Figure 6 , the transparent base layer 422 further includes a support layer 4225. The upper substrate 4221, the support layer 4225, and the lower substrate 4224 are stacked in sequence. The upper conductive layer 4222 is located between the upper substrate 4221 and the support layer 4225, and the lower conductive layer 4223 is located between the lower substrate 4224 and the support layer 4225. A plurality of light-emitting through holes 4226 are formed in the support layer 4225. The light-emitting through holes 4226 are arranged in one-to-one correspondence with the electroluminescent films 423. The electroluminescent films 423 are located in the corresponding light-emitting through holes 4226, and the insulating layer 4231 and the light-emitting layer 4232 are stacked in the corresponding light-emitting through holes 4226.

[0069] In this embodiment, referring to Figure 5 and Figure 6 , the upper substrate 4221, the upper conductive layer 4222, the support layer 4225, the insulating layer 4231, the lower conductive layer 4223, and the lower substrate 4224 are all made of transparent materials.

[0070] Referring toFigure 5 and Figure 6 The luminescence mechanism of the electroluminescent film 423 in the electrically controlled light-filling layer 42 is as follows: when voltage is applied to the upper conductive layer 4222 and the lower conductive layer 4223, electrons at the deep energy level in the interface of the light-emitting layer 4232 material and the insulating layer 4231 material are excited by the high-voltage electric field and enter the light-emitting layer 4232 through tunneling. The electrons are accelerated by the high-voltage electric field in the light-emitting layer 4232 to form superheated electrons. The superheated electrons collide with the luminescent center of the phosphor in the light-emitting layer 4232, causing the electron energy of the luminescent center to jump from the ground state to the high-energy state. When the electrons return to the ground state from the high-energy state, they emit photons, forming a luminescence phenomenon.

[0071] In this embodiment, the light-emitting layer 4232 is excited by the corresponding electrical energy under the action of an electric field to generate light. The light-emitting materials in the light-emitting layer 4232 are mainly divided into electro-red light-emitting materials, electro-green light-emitting materials, and electro-blue light-emitting materials, depending on the color of the light emitted. Specifically, the electro-red light-emitting material can be at least DCM (herein, the chemical name of DCM material is: 4-(dicyanomethylene)-2-methyl-6-(p-dimethylaminophenyl)-4H-pyran); the electro-green light-emitting material can be at least 8-hydroxyquinoline aluminum; and the electro-blue light-emitting material can be at least zinc sulfide.

[0072] Among them, the insulating layer 4231 is mainly used to constrain the electron rate so that the electrons can be captured by the light-emitting layer 4232 material when passing through the light-emitting layer 4232 material and stimulate the light-emitting layer 4232 material to emit light. The insulating material in the insulating layer 4231 can at least be barium powder, tantalum oxide, yttrium oxide, transparent insulating film material, UV insulating glue, epoxy resin insulating glue and acrylic resin insulating glue.

[0073] Reference Figure 5 and Figure 6 In this embodiment, electronic control unit 421 includes electronic control chip 4211, which is located outside transparent base layer 422. Positive conductive wires 4212 and negative conductive wires 4213 are welded to electronic control chip 4211. Positive conductive wires 4212 are located between upper base layer 4221 and upper conductive layer 4222, and are in contact with upper conductive layer 4222. Negative conductive wires 4213 are located between lower base layer 4224 and lower conductive layer 4223, and are in contact with lower conductive layer 4223. Based on the control of electronic control chip 4211, the light emission of several electroluminescent films 423 can be controlled.

[0074] Reference Figure 2 and Figure 3, the white light LED packaging structure further includes a fixing tube 7. The fixing tube 7 is coaxially sleeved outside the mounting tube 5, and the fixing tube 7 is in plug-in fit with the mounting tube 5. The electric control light supplementing layer 42 is arranged inside the upper end of the fixing tube 7. The electric control light supplementing layer 42 is fixedly connected to the inner side wall of the fixing tube 7, and the electric control light supplementing layer 42 closes the fixing tube 7. One axial end of the mounting tube 5 abuts against the substrate 1, and the other end abuts against the electric control light supplementing layer 42.

[0075] Due to the setting of the fixing tube 7, after the fixing tube 7 is sleeved on the mounting tube 5, the electric control light supplementing layer 42 is superposed on one end of the mounting tube 5, and the electric control light supplementing layer 42 closes the mounting tube 5, which facilitates the superposition of the electric control light supplementing layer 42 on the fluorescent layer 41, thereby facilitating the installation of the electric control light supplementing layer 42.

[0076] Refer to Figure 2 and Figure 3 , when the LED chip 2 emits light, the light passing through the fluorescent layer 41 and the light emitted by the fluorescent layer 41 itself will all enter the electric control light supplementing layer 42, which can prevent light leakage and thus improve the quality of the finally emitted white light.

[0077] Refer to Figure 2 and Figure 3 , in this embodiment, a second elastic clamping ring 8 is sleeved outside the mounting tube 5. The fixing tube 7 is sleeved outside the second elastic clamping ring 8. The inner side wall of the second elastic clamping ring 8 abuts against the mounting tube 5, and the outer side wall of the second elastic clamping ring 8 is clamped with the outer side wall of the fixing tube 7.

[0078] Due to the setting of the second elastic clamping ring 8, after the fixing tube 7 is sleeved on the mounting tube 5, the second elastic clamping ring 8 can increase the installation stability between the fixing tube 7 and the mounting tube 5 through its own elastic deformation.

[0079] Refer to Figure 1 , in this embodiment, a plurality of external connection plates 712 are arranged on the outer side wall of the lower end of the fixing tube 7. The external connection plates 712 are fixedly connected to the outer side wall of the fixing tube 7. Fixing holes are formed in the external connection plates 712, and external connection screws 713 are inserted into the fixing holes.

[0080] Refer to Figure 1 and Figure 3 , a plurality of conductive holes 12 are formed in the substrate 1. The conductive holes 12 are arranged in one-to-one correspondence with the fixing holes. The conductive holes 12 are communicated with the corresponding fixing holes, and the external connection screws 713 are inserted into the corresponding conductive holes 12. The external connection screws 713 are screwed with the inner side wall of the corresponding conductive holes 12. In this embodiment, two external connection screws 713 are provided.

[0081] Under the action of the external connection screws 713, the external connection screws 713 fix the external connection plates 712 to the substrate 1, which can increase the installation stability of the fixing tube 7.

[0082] Reference Figure 1 In this embodiment, the electronic control chip 4211 is fixed on the outer side wall of the fixed tube 7. Specifically, the electronic control chip 4211 is fixed to the outer side wall of the fixed tube 7 by gluing or screws.

[0083] Reference Figure 1 and Figure 5 A wire groove 711 is formed in the side wall of the fixed tube 7. The length direction of the wire groove 711 is arranged along the axial direction of the fixed tube 7. The wire groove 711 penetrates through the upper side wall of the fixed tube 7 along its own length direction, and the positive conductive wire 4212 and the negative conductive wire 4213 are both arranged in the corresponding wire groove 711.

[0084] The structural setting of the fixed tube 7 facilitates the installation and fixation of the electric control component 421, and ensures the stability of the operation of the electronic control light supplement layer 42.

[0085] Reference Figure 3 and Figure 4 An electric connection wire 4214 is arranged between the electronic control chip 4211 and the external screw 713. One end of the electric connection wire 4214 is connected to the electronic control chip 4211, and the other end is connected to the external screw 713.

[0086] Since the external screw 713 and the electronic control chip 4211 are connected by the electric connection wire 4214, after the external screw 713 and the substrate 1 are installed, it is convenient to supply power to the electronic control chip 4211 through the two external screws 713, which can improve the convenience of power connection of the electronic control chip 4211.

[0087] The implementation principle of this embodiment is as follows: when the LED chip 2 emits blue light, the blue light first enters the phosphor layer 41 in the color light film 4. At this time, the blue light activates the phosphor in the phosphor layer 41, and the phosphor emits yellow light. Then, both the yellow light and the blue light pass through the phosphor layer 41 and enter the electronic control light supplement layer 42. Since the electronic control light supplement layer 42 is transparent itself, the yellow light and the blue light can pass through the electronic control light supplement layer 42, so that the blue light emitted by the LED and the yellow light emitted by the phosphor layer 41 will be mixed into white light.

[0088] In order to improve the white light quality, in the case of determining the white light quality defect, the corresponding color and corresponding intensity of light are supplemented through the electronic control light supplement layer 42. At this time, the light emitted by the electronic control light supplement layer 42 can perform light supplement, so that the blue light emitted by the LED, the yellow light emitted by the phosphor layer 41, and the light emitted by the electronic control light supplement layer 42 are mixed, thereby improving the quality of the mixed white light.

[0089] This design not only solves the problem of the influence of the thickness and deposition order of the phosphor layer on the white light quality, but also can realize the adjustment of the white light through the electronic control light supplement layer 42, and improves the overall performance of the LED.

[0090] This embodiment also discloses a white light LED packaging method suitable for commercial displays, including the following steps: In the first step, the LED chip 2 is fixed to the substrate 1, and the LED chip 2 is located within the encapsulation ring frame 3.

[0091] Specifically, S11: The LED chip 2 is fixed to the substrate 1 by means of conductive adhesive bonding or welding. S12: The encapsulation ring frame 3 is filled with a transparent sealant to fix the LED chip 2.

[0092] In the second step, a fluorescent layer 41 is added to the encapsulation ring frame 3.

[0093] Specifically, S21: The fluorescent layer 41 is installed on the mounting tube 5. S22: A first elastic clamping ring 6 is sleeved outside the encapsulation ring frame 3. S23: The mounting tube 5 is sleeved outside the encapsulation ring frame 3 and the mounting tube 5 abuts against the substrate 1. S24: A number of mounting screws 52 are installed on the circumferential side of the mounting tube 5 to fix the mounting tube 5 to the substrate 1.

[0094] In the third step, white light detection is performed, and the light supplement requirements of the electrically controlled light supplement layer 42 are determined.

[0095] Specifically, S31: The LED chip 2 is connected to an external power supply, and the white light quality defect is detected at this time. S32: According to the white light quality defect determined in step S31, the color and intensity of the light to be supplemented are determined.

[0096] In the fourth step, according to the light supplement requirements of the electrically controlled light supplement layer 42 obtained in the third step, the corresponding electrically controlled light supplement layer 42 is added to the fluorescent layer 41.

[0097] Specifically, S31: The electrically controlled light supplement layer 42 is installed on the fixing tube 7. S32: A second elastic clamping ring 8 is sleeved outside the mounting tube 5. S33: The fixing tube 7 is sleeved outside the mounting tube 5 and the fixing tube 7 abuts against the substrate 1. S34: A number of external screws 713 are pre-installed on the outer side of the fixing tube 7. S35: The power connection wire 4214 of the electrically controlled light supplement layer 42 is sleeved onto the corresponding external screw 713. S36: All the external screws 713 are tightened in sequence to fix the mounting tube 5 to the base.

[0098] In the fifth step, LED light emission debugging is performed.

[0099] Specifically, S41: The LED chip 2 and the electrically controlled light supplement layer 42 are connected to an external power supply, and the white light quality defect is detected at this time. S42: According to the white light quality defect problem detected in step S41, the light intensity emitted by the electrically controlled light supplement layer 42 is correspondingly adjusted. S43: Steps S41 and S42 are repeated until the white light quality meets the requirements.

[0100] In the sixth step, glue dotting and encapsulation are performed for fixation.

[0101] Specifically, transparent glue is used to seal the entire LED packaging structure to ensure that the internal components of the LED packaging structure are not affected by the external environment, while enhancing the stability of the overall structure.

[0102] The implementation principle of this embodiment is as follows: LED packaging is achieved through the above method. By securing the LED chip 2 to the substrate 1 and positioning it within the packaging ring frame 3, the light emitted by the LED chip 2 is effectively guided to the subsequent phosphor layer 41 and electrically controlled fill light layer 42, thereby improving light utilization and overall structural stability. The addition of the phosphor layer 41 to the packaging ring frame 3 allows the blue light emitted by the LED chip 2 to excite the phosphor powder to produce light of other colors, initially forming white light. This also reduces the impact of uneven phosphor layer thickness on white light quality. White light detection determines the fill light requirements of the electrically controlled fill light layer 42, achieving precise control of white light quality and further improving white light uniformity and brightness. Based on the fill light requirements of the electrically controlled fill light layer 42, a corresponding electrically controlled fill light layer 42 is added. The electroluminescent film 423 emits light of a specific color and intensity, actively compensating for deficient components in the white light and significantly improving white light quality. LED light is then debugged, and the luminous parameters of the electrically controlled fill light layer 42 are adjusted based on the test results to ensure that the final white light output meets the high standards of commercial display equipment. Finally, it is packaged and fixed by dispensing glue to protect the internal components from the influence of the external environment, thereby enhancing the reliability and durability of the entire packaging structure.

[0103] Example 2: A white light LED packaging structure suitable for commercial display, referring to Figure 7 The difference between this embodiment and embodiment 1 is that the color film 4 includes a plurality of fluorescent layers 41, the plurality of fluorescent layers 41 are stacked in sequence in the mounting tube 5, and the plurality of fluorescent layers 41 are all located between the electrically controlled fill light layer 42 and the packaging ring frame 3.

[0104] In this embodiment, three fluorescent layers 41 are provided. The fluorescent powders in the three fluorescent layers 41 are red fluorescent powder, yellow fluorescent powder and green fluorescent powder respectively. The fluorescent layer 41 containing red fluorescent powder contacts the packaging ring frame 3 .

[0105] Reference Figure 5 and Figure 7 The electroluminescent films 423 in the electrically controlled light-filling layer 42 are divided into three types. The luminescent layers 4232 in the three types of electroluminescent films 423 respectively use electro-red luminescent material, electro-green luminescent material and electro-blue luminescent material.

[0106] The implementation principle of this embodiment is as follows: By stacking several phosphor layers 41, the blue light emitted by the LED chip 2 will pass through all the phosphor layers 41 in sequence, and each phosphor layer 41 can convert the blue light emitted by the LED chip 2. This enables each layer of phosphor to adjust the wavelength and intensity of the light specifically, effectively reducing the white light quality fluctuations caused by uneven thickness or deposition sequence of a single phosphor layer 41, thereby improving the uniformity and quality of white light generation.

[0107] Meanwhile, based on the cooperative design of the three phosphor layers 41, the blue light emitted by the LED chip 2 first excites the red phosphor in the first phosphor layer 41 to emit red light. The blue light passing through the first phosphor layer 41 continues to excite the yellow phosphor in the second phosphor layer 41 to emit yellow light, and the blue light passing through the second phosphor layer 41 continues to excite the green phosphor in the second phosphor layer 41 to emit green light. This can avoid the light emitted by the short-wavelength phosphor from re-exciting the long-wavelength phosphor, thereby solving the problem of secondary or multiple excitation of the phosphor and effectively improving the excitation efficiency of the phosphor.

[0108] On this basis, the mixing of blue light, yellow light, and red light can improve the quality of white light. And the electronically controlled supplementary light layer 42 can select to supplement one or more of blue light, green light, and red light according to actual needs, which can ensure the final white light quality.

[0109] Embodiment 3: A white LED packaging structure suitable for commercial displays. Refer to Figure 8 , the difference between this embodiment and Embodiment 2 is that several phosphor layers 41 are stacked in sequence in the mounting tube 5, the phosphor layer 41 is coaxially inserted and matched with the mounting tube 5, and the phosphor layer 41 is slidably connected to the inner side wall of the mounting tube 5 along the axial direction of the mounting tube 5.

[0110] Refer to Figure 8 , a support ring 53 is arranged in the mounting tube 5. The support ring 53 is coaxially arranged with the mounting tube 5 and is fixedly connected to the inner side wall of the mounting tube 5, and the encapsulation ring frame 3 is located between the support ring 53 and the substrate 1 along its own axial direction.

[0111] Refer to Figure 8 , a closed tube 54 is coaxially sleeved on the upper end of the mounting tube 5. The inner side wall of the closed tube 54 is screwed to the outer side wall of the mounting tube 5, and the outer side wall of the closed tube 54 is flush with the outer side wall of the mounting tube 5. A pressure ring 55 is arranged at the upper end of the closed tube 54. The pressure ring 55 is arranged inside the closed tube 54, and the outer side wall of the pressure ring 55 is fixedly connected to the closed tube 54.

[0112] Refer to Figure 8 , the closed tube 54 and the support ring 53 are coaxially arranged at intervals, several phosphor layers 41 are stacked between the closed tube 54 and the support ring 53 in sequence, and both the closed tube 54 and the support ring 53 are in contact with the corresponding adjacent phosphor layer 41.

[0113] The implementation principle of this embodiment is as follows: When it is necessary to change the number of the fluorescent layers 41 or replace the fluorescent layers 41, by rotating the closed tube 54, the closed tube 54 can be removed from the mounting tube 5. At this time, the fluorescent layers 41 can be taken out from the mounting tube 5 and replaced, which facilitates the replacement of the fluorescent layers 41. When the white light emitted by the LED is detected to not meet the requirements and still cannot meet the requirements after the electric control supplementary light layer 42 makes supplementary light, at this time, the fluorescent layers 41 can be replaced, disassembled or added to adjust the quality of the white light emitted by the LED.

[0114] The embodiments of this specific implementation manner are all preferred embodiments of this application, and do not limit the protection scope of this application accordingly. The same components are denoted by the same reference numerals. Therefore, all equivalent changes made according to the structure, shape and principle of this application shall be covered within the protection scope of this application.

Claims

1. A white LED packaging structure suitable for commercial display, characterized in that, Including: A substrate (1), an LED chip (2), a packaging ring frame (3), and a color light film (4). One axial end of the packaging ring frame (3) is connected to the substrate (1), and the other end is connected to the color light film (4). The LED chip (2) is fixed on the substrate (1), and the LED chip (2) is located inside the packaging ring frame (3); The color light film (4) includes a fluorescent layer (41) in which phosphor powder is dispersed. The fluorescent layer (41) is disposed on the packaging ring frame (3), and the fluorescent layer (41) encloses the packaging ring frame (3); The color light film (4) further includes an electronically controlled supplementary light layer (42). The electronically controlled supplementary light layer (42) is disposed on a side of the fluorescent layer (41) facing away from the packaging ring frame (3). The light emitted by the LED chip (2) and the fluorescent layer (41) can pass through the electronically controlled supplementary light layer (42), and the electronically controlled supplementary light layer (42) is used for active supplementary lighting.

2. The white LED packaging structure suitable for commercial display according to claim 1, wherein, It further includes an installation tube (5). The installation tube (5) is sleeved outside the packaging ring frame (3). The installation tube (5) is coaxially inserted and matched with the packaging ring frame (3). The fluorescent layer (41) is disposed inside the installation tube (5), and the fluorescent layer (41) encloses the installation tube (5).

3. The white LED packaging structure suitable for commercial display according to claim 2, wherein A first elastic clamping ring (6) is sleeved outside the packaging ring frame (3). The installation tube (5) is sleeved outside the first elastic clamping ring (6). The inner side wall of the first elastic clamping ring (6) abuts against the packaging ring frame (3), and the outer side wall of the first elastic clamping ring (6) abuts against the installation tube (5).

4. A white light LED packaging structure suitable for commercial display according to claim 2, characterized in that, There are a plurality of the fluorescent layers (41). All the plurality of fluorescent layers (41) are located between the electronically controlled supplementary light layer (42) and the packaging ring frame (3), and the plurality of fluorescent layers (41) are sequentially stacked along the interval direction between the electronically controlled supplementary light layer (42) and the packaging ring frame (3).

5. A white light LED packaging structure suitable for commercial display according to claim 4, characterized in that, The fluorescent layer (41) is coaxially inserted and matched with the installation tube (5), and the plurality of fluorescent layers (41) are sequentially stacked along the axial direction of the installation tube (5).

6. The white LED packaging structure suitable for commercial display according to claim 5, wherein, A support ring (53) is disposed inside the installation tube (5). The support ring (53) is coaxially connected to the installation tube (5); One end of the installation tube (5) along its own axis and facing away from the substrate (1) is sleeved with a closing tube (54). The closing tube (54) is screwed to the installation tube (5). A pressing ring (55) is disposed inside the closing tube (54). The pressing ring (55) is coaxially connected to the closing tube (54); The pressing ring (55) and the support ring (53) are coaxially spaced apart. All the plurality of fluorescent layers (41) are located between the pressing ring (55) and the support ring (53). The support ring (53) and the pressing ring (55) both abut against the adjacent fluorescent layer (41).

7. The white LED packaging structure suitable for commercial display according to claim 2, wherein, It further includes a fixed tube (7), the fixed tube (7) is sleeved outside the installation tube (5), the fixed tube (7) is coaxially inserted and matched with the installation tube (5), the electronically controlled light supplement layer (42) is arranged in the fixed tube (7), and the electronically controlled light supplement layer (42) closes the fixed tube (7).

8. A white light LED packaging structure suitable for commercial display according to claim 1, characterized in that The electronically controlled light supplement layer (42) includes an electronic control component (421), a transparent base layer (422) and a plurality of electroluminescent films (423). The plurality of electroluminescent films (423) are all embedded in the transparent base layer (422), and the plurality of electroluminescent films (423) are arranged at intervals. The electronic control component (421) is located outside the transparent base layer (422), and the plurality of electroluminescent films (423) are all electrically connected to the electronic control component (421).

9. The white LED packaging structure suitable for commercial display according to claim 8, characterized in that, The transparent base layer (422) includes an upper base material (4221), an upper conductive layer (4222), a lower conductive layer (4223) and a lower base material (4224). The upper base material (4221), the upper conductive layer (4222), the electroluminescent film (423), the lower conductive layer (4223) and the lower base material (4224) are sequentially stacked and arranged; The electronic control component (421) further includes an electronic control chip (4211), a positive conductive wire (4212) and a negative conductive wire (4213). The positive conductive wire (4212) and the negative conductive wire (4213) are both connected to the electronic control chip (4211), and the positive conductive wire (4212) is located between the upper base material (4221) and the upper conductive layer (4222), and the negative conductive wire (4213) is located between the lower conductive layer (4223) and the lower base material (4224).

10. A white LED packaging method suitable for commercial display, for the white LED packaging structure described in any one of the above claims 1-9, characterized in that, It includes the following steps: The first step is to fix the LED chip (2) to the substrate (1) and make the LED chip (2) located inside the encapsulation ring frame (3); The second step is to add a fluorescent layer (41) to the encapsulation ring frame (3); The third step is white light detection and determining the light supplement requirement of the electronically controlled light supplement layer (42); The fourth step is to add the corresponding electronically controlled light supplement layer (42) to the fluorescent layer (41) according to the obtained light supplement requirement of the electronically controlled light supplement layer (42); The fifth step is LED light emission debugging; The sixth step is to fix by dispensing and encapsulation.

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