High-color-gamut white light LED lamp bead

Abstract

The utility model discloses a high-color-gamut white-light LED lamp bead which comprises a first electrode plate, a second electrode plate, a blue-light LED chip, a green-light LED chip and fluoride red powder glue. The first electrode plate and the second electrode plate are oppositely arranged; the blue light LED chips and the green light LED chips are arranged between the first electrode plate and the second electrode plate at intervals; the fluoride red powder glue coats the peripheral sides and the tops of the first electrode plate, the second electrode plate, the blue-light LED chip and the green-light LED chip; by means of the structure, the DCI-P3 color gamut value can reach 92%-100%, meanwhile, the color gamut has the advantages of being simple in production process, good in reliability and low in cost, and the use requirement is met.

Description

TECHNICAL FIELD

[0001] The utility model relates to LED technical field, especially a high color gamut white light LED lamp pearl. BACKGROUND

[0002] At present, LCD liquid crystal display is still the most mainstream display technology in display industry due to mature technology, low cost, high definition and other characteristics, but along with people's life level unceasing enhancement, the requirement of television, computer display, notebook computer and vehicle display and other display screens is also higher and higher, and definition, contrast, color brightness become important indexes of improving display effect, color gamut is the measuring index of measuring display color brightness, and the larger color gamut value is, the more vivid and realistic the color displayed by the display is, at present, the mainstream way of improving the color gamut of display is using blue light LED backlight source + quantum dot film and using high color gamut white light LED as display backlight source, due to the influence of high cost and poor reliability of quantum dot material, high color gamut white light LED backlight source becomes the primary technical bottleneck of the industry.

[0003] The white light LED device used in the white light LED backlight module mainly has blue light LED chip (30) + YAG yellow-green fluorescent powder + sulfide red fluorescent powder, wherein the half wave width of YAG yellow-green fluorescent powder is 110-115nm, and the half wave width is the most important index of determining color gamut, and the white light LED backlight source using blue light LED chip (30) + YAG yellow-green fluorescent powder + sulfide red fluorescent powder has DC I-P3 color gamut < 80%, which does not reach the standard of high color gamut DC I-P3 > 90% commonly said in the industry.

[0004] Therefore, there is an urgent need for a high color gamut white light LED lamp pearl to solve the above problems. INVENTION CONTENTS

[0005] The utility model aims at at least solving one of the technical problems existing in the prior art. To this end, the utility model provides a high color gamut white light LED lamp pearl.

[0006] The technical scheme adopted by one embodiment of the utility model to solve the technical problem is: a high color gamut white light LED lamp pearl, which comprises a first electrode sheet, a second electrode sheet, a blue light LED chip, a green light LED chip and a fluoride red powder glue.

[0007] The first electrode sheet and the second electrode sheet are arranged oppositely.

[0008] The blue light LED chip and the green light LED chip are arranged at intervals between the first electrode sheet and the second electrode sheet, and the electrode surface at the bottom of the blue light LED chip and the green light LED chip is flush with the bottom of the first electrode sheet and the second electrode sheet.

[0009] The fluoride red powder is coated on the first electrode sheet, the second electrode sheet, the periphery and the top of the blue light LED chip and the green light LED chip.

[0010] As one of the preferred embodiments of the utility model, the electrode directions of the blue light LED chip and the green light LED chip are same, the first electrode sheet corresponds to the positive electrode of the blue light LED chip and the positive electrode of the green light LED chip, and the second electrode sheet corresponds to the negative electrode of the blue light LED chip and the negative electrode of the green light LED chip.

[0011] As one of the preferred embodiments of the utility model, the electrode directions of the blue light LED chip and the green light LED chip are same, the first electrode sheet includes the first soldering sheet and the second soldering sheet which are independent of each other, the second electrode sheet includes the third soldering sheet and the fourth soldering sheet which are independent of each other, the first soldering sheet corresponds to the positive electrode of the blue light LED chip, the second soldering sheet corresponds to the positive electrode of the green light LED chip, the third soldering sheet corresponds to the negative electrode of the blue light LED chip, and the fourth soldering sheet corresponds to the negative electrode of the green light LED chip.

[0012] As one of the preferred embodiments of the utility model, the electrode directions of the blue light LED chip and the green light LED chip are opposite, the first electrode sheet includes the fifth soldering sheet and the sixth soldering sheet which are independent of each other, the fifth soldering sheet corresponds to the positive electrode of the blue light LED chip, the sixth soldering sheet corresponds to the negative electrode of the green light LED chip, and the second electrode sheet corresponds to the negative electrode of the blue light LED chip and the positive electrode of the green light LED chip.

[0013] As one of the preferred embodiments of the utility model, the electrode directions of the blue light LED chip and the green light LED chip are opposite, the first electrode sheet includes the seventh soldering sheet and the eighth soldering sheet which are independent of each other, the seventh soldering sheet corresponds to the negative electrode of the blue light LED chip, the eighth soldering sheet corresponds to the positive electrode of the green light LED chip, and the second electrode sheet corresponds to the positive electrode of the blue light LED chip and the negative electrode of the green light LED chip.

[0014] As one of the preferred embodiments of the utility model, the first electrode sheet is provided with the first groove and the second groove, the second electrode sheet is provided with the third groove which is arranged opposite to the first groove and the fourth groove which is arranged opposite to the second groove, and the two ends of the blue light LED chip are respectively inserted into the first groove and the third groove, and the two ends of the green light LED chip are respectively inserted into the second groove and the fourth groove.

[0015] As one of the preferred embodiments of the utility model, the wavelength of the blue light LED chip is 450-470nm, and the wavelength of the green light LED chip is 520-540nm.

[0016] As one of preferred embodiments of the utility model, the fluoride red powder glue is made by mixing silica gel and fluoride red powder, the chemical formula of the fluoride red powder is K2SiF6:Mn4+, and the wavelength is 625-635nm.

[0017] The utility model discloses the beneficial effect: a kind of high color gamut white light LED lamp pearl, including first electrode sheet, second electrode sheet, blue light LED chip, green light LED chip and fluoride red powder glue;First electrode sheet and second electrode sheet are oppositely arranged;Blue light LED chip and green light LED chip are arranged at the interval between first electrode sheet and second electrode sheet;Fluoride red powder glue is coated in the circumferential side and top of first electrode sheet, second electrode sheet, blue light LED chip and green light LED chip;Through above-mentioned structure, it can reach DC I-P3 color gamut value 92%-100%, simultaneously have the advantages that production process is simple, reliability is good, cost is low, satisfy use demand. BRIEF DESCRIPTION OF DRAWINGS

[0018] The above and / or additional aspects and advantages of the utility model will become apparent and more readily appreciated from the following description of the embodiments, with reference to the following drawings, in which:

[0019] Figure 1 It is a kind of high color gamut white light LED lamp pearl before the structure schematic diagram of segmentation;

[0020] Figure 2 It is a kind of high color gamut white light LED lamp pearl after the structure schematic diagram of segmentation;

[0021] Figure 3 It is a kind of high color gamut white light LED lamp pearl after the exploded view of segmentation;

[0022] Figure 4 It is a kind of high color gamut white light LED lamp pearl first embodiment partial structure schematic diagram;

[0023] Figure 5 It is a kind of high color gamut white light LED lamp pearl second embodiment partial structure schematic diagram;

[0024] Figure 6 It is a kind of high color gamut white light LED lamp pearl third embodiment partial structure schematic diagram;

[0025] Figure 7 It is a kind of high color gamut white light LED lamp pearl fourth embodiment partial structure schematic diagram. DETAILED DESCRIPTION

[0026] The detailed embodiments of the utility model will be described in this part, the preferred embodiment of the utility model is shown in the drawings, the role of the drawings is to supplement the description of the written part with graphics, so that people can intuitively and visually understand each technical feature and the overall technical scheme of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model.

[0027] In the description of the utility model, the meaning of multiple is more than two, greater than, less than, more than, etc. is not included in the number, above, below, etc. is included in the number. If it is described as first, second, it is only used for distinguishing technical features for the purpose, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the sequence of indicated technical features.

[0028] In the description of the utility model, it is understood that the orientation description, such as the orientation or position relationship indicated by up, down, front, back, left, right, etc. is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and is not used to indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, so it cannot be understood as a limitation on the utility model.

[0029] In the utility model, unless otherwise explicitly limited, the words "set", "install", "connect" and the like should be broadly understood, for example, they can be directly connected, or indirectly connected through an intermediate medium; can be fixedly connected, or can be detachably connected, or can be integrally formed; can be mechanically connected; can be the internal communication or interaction relationship of two elements. The skilled in the art can reasonably determine the specific meaning of the above words in the utility model according to the specific content of the technical scheme.

[0030] Reference Figures 1-7 A high color gamut white LED lamp bead, comprising a first electrode sheet 10, a second electrode sheet 20, a blue light LED chip 30, a green light LED chip 40 and a fluoride red powder glue 50;

[0031] The first electrode sheet 10 and the second electrode sheet 20 are oppositely arranged;

[0032] The blue light LED chip 30 and the green light LED chip 40 are arranged between the first electrode sheet 10 and the second electrode sheet 20, and the electrode surface at the bottom of the blue light LED chip 30 and the green light LED chip 40 is flush with the bottom of the first electrode sheet 10 and the second electrode sheet 20;

[0033] The fluoride red powder glue 50 is coated on the side and top of the first electrode sheet 10, the second electrode sheet 20, the blue light LED chip 30 and the green light LED chip 40.

[0034] Referring to Figures 1-3 , when the packaging device is produced, 1, the blue light LED chip 30 and the green light LED chip 40 are arranged in an array formed by the first electrode sheet 10 and the second electrode sheet 20, specifically, the blue light LED chip 30 and the green light LED chip 40 are arranged at intervals between the first electrode sheet 10 and the second electrode sheet 20; 2, the fluoride red powder glue 50 is overlaid and pressed on the blue light LED chip 30 and the green light LED chip 40 and is baked and cured, the fluoride red powder glue 50 covers the first electrode sheet 10, the second electrode sheet 20, the blue light LED chip 30 and the green light LED chip 40, and only the pads required for welding the first electrode sheet 10, the second electrode sheet 20, the blue light LED chip 30 and the green light LED chip 40 to the PCB 70 are exposed; 3, the device is cut and separated in the horizontal and vertical center through the waterless cutting method; 4, the high color gamut white light packaging device finished product is obtained after the film is turned over.

[0035] When the LED lamp bead provided by the application is welded on the PCB by using the welding material, the welding material can connect the first electrode sheet 10 and the second electrode sheet 20 and the pads at the bottom of the blue light LED chip 30 and the green light LED chip 40 on the PCB, the blue light LED chip 30 and the green light LED chip 40 in the application are turned on through the circuit design of the PCB, and can be designed in series or parallel.

[0036] Referring to Figures 3-4 , as the first embodiment of the high color gamut white light packaging device, the electrode directions of the blue light LED chip 30 and the green light LED chip 40 are the same, the first electrode sheet 10 corresponds to the positive electrode of the blue light LED chip 30 and the positive electrode of the green light LED chip 40, and the second electrode sheet 20 corresponds to the negative electrode of the blue light LED chip 30 and the negative electrode of the green light LED chip 40; in this embodiment, a parallel circuit is formed between the blue light LED chip 30 and the green light LED chip 40.

[0037] Referring to Figure 3 and Figure 5 , as the second embodiment of the high color gamut white light packaging device, the electrode directions of the blue light LED chip 30 and the green light LED chip 40 are the same, the first electrode sheet 10 includes the first welding sheet 11a and the second welding sheet 12a which are independent of each other, the second electrode sheet 20 includes the third welding sheet 21a and the fourth welding sheet 22a which are independent of each other, the first welding sheet 11a corresponds to the positive electrode of the blue light LED chip 30, the second welding sheet 12a corresponds to the positive electrode of the green light LED chip 40, the third welding sheet 21a corresponds to the negative electrode of the blue light LED chip 30, and the fourth welding sheet 22a corresponds to the negative electrode of the green light LED chip 40; in this embodiment, the blue light LED chip 30 and the green light LED chip 40 exist independently and need to be connected to the driving circuit respectively.

[0038] Referring to Figure 3 and Figure 6 , as a third embodiment of the high color gamut white light packaging device, the electrode directions of the blue light LED chip 30 and the green light LED chip 40 are opposite, the first electrode sheet 10 includes a fifth soldering sheet 11b and a sixth soldering sheet 12b which are independent of each other, the fifth soldering sheet 11b corresponds to the positive electrode of the blue light LED chip 30, the sixth soldering sheet 12b corresponds to the negative electrode of the green light LED chip 40, and the second electrode sheet 20 corresponds to the negative electrode of the blue light LED chip 30 and the positive electrode of the green light LED chip 40; in this embodiment, a series circuit is formed between the blue light LED chip 30 and the green light LED chip 40, wherein the fifth soldering sheet 11b is connected to the positive electrode of the power supply, and the sixth soldering sheet 12b is connected to the negative electrode of the power supply.

[0039] Referring to Figure 3 and Figure 7 , as a fourth embodiment of the high color gamut white light packaging device, the electrode directions of the blue light LED chip 30 and the green light LED chip 40 are opposite, the first electrode sheet 10 includes a seventh soldering sheet 11c and an eighth soldering sheet 12c which are independent of each other, the seventh soldering sheet 11c corresponds to the negative electrode of the blue light LED chip 30, the eighth soldering sheet 12c corresponds to the positive electrode of the green light LED chip 40, and the second electrode sheet 20 corresponds to the positive electrode of the blue light LED chip 30 and the negative electrode of the green light LED chip 40; in this embodiment, a series circuit is formed between the blue light LED chip 30 and the green light LED chip 40, wherein the seventh soldering sheet 11c is connected to the negative electrode of the power supply, and the eighth soldering sheet 12c is connected to the positive electrode of the power supply.

[0040] Referring to Figures 3-7 , the first electrode sheet 10 is provided with a first recess 61 and a second recess 62, the second electrode sheet 20 is provided with a third recess 63 arranged opposite to the first recess 61 and a fourth recess 64 arranged opposite to the second recess 62, and the two ends of the blue light LED chip 30 respectively extend into the first recess 61 and the third recess 63, and the two ends of the green light LED chip 40 respectively extend into the second recess 62 and the fourth recess 64; by arranging the first recess 61, the second recess 62, the third recess 63 and the fourth recess 64, the soldering area can be increased as much as possible while the area occupied by the whole device is reduced as much as possible.

[0041] In some embodiments, the blue light LED chip 30 has a wavelength of 450-470 nm, the green light LED chip 40 has a wavelength of 520-540 nm; the fluoride red powder glue 50 is made of silica gel and fluoride red powder, the chemical formula of the fluoride red powder is K2SiF6:Mn4+ (potassium fluorosilicate doped with manganese ions), and the wavelength is 625-635 nm; the half wave width of the blue light LED chip 30 is about 20 nm, the half wave width of the green light LED chip 40 is about 20 nm, after being coated with the fluoride red powder glue 50, the half wave length of the excited converted red light is 5-30 nm, so that the white light packaging device can reach a DC I-P3 color gamut value of 92%-100%, and be used as a high color gamut white light backlight module and a high color gamut white light Mini backlight module.

[0042] The utility model has the advantages that the above structure can reach a DC I-P3 color gamut value of 92%-100%, and has the advantages of simple production process, good reliability and low cost, and meets the use requirement.

[0043] Of course, the utility model is not limited to the above-mentioned embodiment, and those skilled in the art can make equivalent transformation or replacement without departing from the spirit of the utility model, and these equivalent transformations and replacements are all included in the range defined by the claims of the present application.

Claims

1. A high color gamut white LED lamp bead, characterized in that: The application relates to a blue-green LED chip, which comprises a first electrode sheet (10), a second electrode sheet (20), a blue LED chip (30), a green LED chip (40) and a fluoride red powder glue (50). The first electrode sheet (10) and the second electrode sheet (20) are oppositely arranged. The blue LED chip (30) and the green LED chip (40) are arranged at intervals between the first electrode sheet (10) and the second electrode sheet (20). The fluoride red powder glue (50) is coated on the circumferential side and the top of the first electrode sheet (10), the second electrode sheet (20), the blue LED chip (30) and the green LED chip (40). 2.The high color gamut white LED lamp bead of claim 1, wherein: The electrode directions of the blue LED chip (30) and the green LED chip (40) are the same, the first electrode sheet (10) corresponds to the positive electrode of the blue LED chip (30) and the positive electrode of the green LED chip (40), and the second electrode sheet (20) corresponds to the negative electrode of the blue LED chip (30) and the negative electrode of the green LED chip (40). 3.The high color gamut white LED lamp bead of claim 1, wherein: The electrode directions of the blue LED chip (30) and the green LED chip (40) are the same, the first electrode sheet (10) comprises a first welding sheet (11a) and a second welding sheet (12a) which are independent of each other, the second electrode sheet (20) comprises a third welding sheet (21a) and a fourth welding sheet (22a) which are independent of each other, the first welding sheet (11a) corresponds to the positive electrode of the blue LED chip (30), the second welding sheet (12a) corresponds to the positive electrode of the green LED chip (40), the third welding sheet (21a) corresponds to the negative electrode of the blue LED chip (30), and the fourth welding sheet (22a) corresponds to the negative electrode of the green LED chip (40).

4. The high color gamut white LED lamp bead according to claim 1, characterized in that: The electrode directions of the blue LED chip (30) and the green LED chip (40) are opposite, the first electrode sheet (10) comprises a fifth welding sheet (11b) and a sixth welding sheet (12b) which are independent of each other, the fifth welding sheet (11b) corresponds to the positive electrode of the blue LED chip (30), the sixth welding sheet (12b) corresponds to the negative electrode of the green LED chip (40), and the second electrode sheet (20) corresponds to the negative electrode of the blue LED chip (30) and the positive electrode of the green LED chip (40).

5. The high color gamut white LED lamp bead according to claim 1, characterized in that: The electrode directions of the blue LED chip (30) and the green LED chip (40) are opposite, the first electrode sheet (10) comprises a seventh welding sheet (11c) and an eighth welding sheet (12c) which are independent of each other, the seventh welding sheet (11c) corresponds to the negative electrode of the blue LED chip (30), the eighth welding sheet (12c) corresponds to the positive electrode of the green LED chip (40), and the second electrode sheet (20) corresponds to the positive electrode of the blue LED chip (30) and the negative electrode of the green LED chip (40).

6. The high color gamut white LED lamp bead according to claim 1, characterized in that: The first electrode sheet (10) is provided with a first groove (61) and a second groove (62), the second electrode sheet (20) is provided with a third groove (63) arranged opposite to the first groove (61) and a fourth groove (64) arranged opposite to the second groove (62), two ends of the blue light LED chip (30) respectively extend into the first groove (61) and the third groove (63), and two ends of the green light LED chip (40) respectively extend into the second groove (62) and the fourth groove (64).

7. The high color gamut white LED lamp bead according to claim 1, characterized in that: The wavelength of the blue light LED chip (30) is 450-470 nm, and the wavelength of the green light LED chip (40) is 520-540 nm.

8. The high color gamut white LED lamp bead according to claim 1, characterized in that: The fluoride red powder glue (50) is made of silica gel and fluoride red powder mixed, the chemical formula of the fluoride red powder is K2SiF6:Mn 4+ , wavelength is 625-635nm.

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