CN102420273B - Method for packaging transparent glue on LED (Light-emitting Diode) lamp chip - Google Patents
Method for packaging transparent glue on LED (Light-emitting Diode) lamp chip Download PDFInfo
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- CN102420273B CN102420273B CN 201110263704 CN201110263704A CN102420273B CN 102420273 B CN102420273 B CN 102420273B CN 201110263704 CN201110263704 CN 201110263704 CN 201110263704 A CN201110263704 A CN 201110263704A CN 102420273 B CN102420273 B CN 102420273B
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Abstract
The invention provides a method for transparent glue on an LED (Light-emitting Diode) lamp chip. A screen printing process is adopted and the packaged transparent glue is UV (Ultraviolet) embossed oil ink. The method comprises the following steps of: preparing a screen printing plate and a scraper blade, wherein the prepared screen printing plate is provided with a plurality of air leaking area units, a plurality of arc-shaped nicks are formed at the bottom edge of the prepared scraper blade, the number of the arc-shaped nicks is the same as the row number of the air leaking area units of thescreen printing plate; putting the screen printing plate on the LED lamp to be packaged to align the air leaking area units of the screen printing plate to a printing part of the corresponding chip; starting a screen printing process to print the UV embossed oil ink on each chip from the each air leaking area unit to form an oil ink layer with a thick middle part and two thin sides; irradiating the LED lamp printed with the oil ink layer by ultraviolet rays to solidify the oil ink layer on each chip. According to the method provided by the invention, the production procedure of each LED lamp is simplified and the structure of the obtained product is simple; the shape of the transparent glue is stable and reliable and the transparent glue can be directly stuck on the chip.
Description
Technical field
The invention belongs to the technical field of LED lamp production technology, particularly a kind of method of LED wick sheet encapsulation transparent adhesive tape.
Background technology
The LED lamp comprises substrate and chip, and chip is installed on the substrate and is arranged as several rows and some row, also needs to cover transparent adhesive tape on the chip usually and plays a protective role.In addition, because the light that LED wick sheet sends is diffusion, lack guidance quality, most of light is not directive the place ahead naturally and understandably, and therefore, people wish that again transparent adhesive tape can play the light guide effect, namely play and have the effect that is similar to convex lens, make more concentrated area directive the place ahead of light, improve light utilization, reach the purpose of energy-conserving and environment-protective.
The mode of existing LED wick sheet encapsulation transparent adhesive tape has two kinds usually, first kind is that one of transparent adhesive tape injection is preset as in the transparent plastic mould of lens shape, transparent adhesive tape is solidified, again the transparent plastic mould is fixedly mounted on the substrate, the transparent adhesive tape curvature ideal that this mode obtains, stable, but transparent adhesive tape can't directly cement on the chip, need to set up fixed structure and mould in addition, thereby complex structure, technological process is many, the cost height, and can have air gap between LED wick sheet and the transparent adhesive tape, the influence heat radiation; Second kind is to utilize point gum machine that transparent adhesive tape is directly put to drip on the chip, but the transparent adhesive tape that this mode obtains is difficult to reliablely and stablely obtain desirable lens shape, the curvature on transparent adhesive tape surface is difficult to control, the transparent adhesive tape curvature randomness that each drop obtains is very big, its curvature is very undesirable, wayward, unstable, thereby light guide effect is undesirable.So-called curvature instability refers to that the curvature between the transparent adhesive tape that homogeneous drop not obtains differs greatly, and does not refer to that the curvature on same transparent adhesive tape surface changes in time.
Summary of the invention
The objective of the invention is to overcome above-mentioned shortcoming and provide the method for a kind of LED wick sheet encapsulation transparent adhesive tape, the product structure that it obtains is simple, and the dimensionally stable of transparent adhesive tape is reliable, and transparent adhesive tape can directly cement on the chip.
Its purpose can realize by following scheme: a kind of method of LED wick sheet encapsulation transparent adhesive tape, it is characterized in that adopting the technology of silk screen printing, packaged transparent adhesive tape is selected the UV embossed printing ink for use, may further comprise the steps: (1), according to the arrangement position of LED wick sheet at LED lamp substrate, design the printing position, the corresponding design of each chip has a printing position, and this printing position covers corresponding chip, and the central point at printing position is aimed at the central point of chip; The position of respectively printing that designs is arranged as several rows; (2), prepare screen printing forme and scraper plate according to the printing position that designs, prepared screen printing forme has several blank territory elements, the size of each blank territory element, position are corresponding one by one with designed printing position, and each blank territory element of screen printing forme also is arranged as several rows; The base of prepared scraper plate is formed with several arc notch, and the quantity of arc notch is identical with the line number of the blank territory element of screen printing forme, and the position of each arc notch and the screen printing forme wherein position of the blank territory element of delegation are corresponding; (3), screen printing forme is placed on the LED lamp to be packaged, make the blank territory element of screen printing forme aim at the printing position of respective chip; End at screen printing forme is poured the UV embossed printing ink into, scraper plate is begun to scrape from the screen printing forme face from an end of pouring the UV embossed printing ink into, the direction that scraper plate scrapes is to make the central point of each breach of scraper plate keep aiming at the center line of the blank territory element of screen printing forme corresponding line always, make the UV embossed printing ink print to each above chip from each blank territory element thus, form the thin ink lay in thick middle both sides; (4), allow the LED lamp that is printed on ink lay accept the ultraviolet ray irradiation, ink lay is solidificated on each chip.Above-mentioned " UV embossed printing ink " claims again " ultraviolet curing embossed printing ink ", or claims " UV type oil ", or claims that " the transparent embossed printing ink of UV " is a kind of known commercially available prod.
In each blank territory element of prepared screen printing forme, the perforate percentage successively decreases to this edges of regions gradually from these zone central authorities.
The arrangements of chips of packaged LED lamp becomes the some row of several rows, and each blank territory element of prepared screen printing forme also correspondence is arranged as the some row of several rows, has non-blank zone between every adjacent two row, also has non-blank zone between every adjacent two row.
The present invention has the following advantages and effect:
1, the present invention can make embossed printing ink through protruding certain thickness on each chip behind the silk-screen owing to adopt the UV embossed printing ink; And scraper plate has arc notch, therefore after scraper plate is scraped, at the position the closer to the arc notch central point, the embossed printing ink that scraper plate blows off is more few, therefore the ink thickness that stamps of this position is more big, otherwise, more away from the position of arc notch central point, the embossed printing ink that blows off is more many, so the ink thickness that this position stamps is more little.Like this, form thick middle and both sides thin ink lay gradually, this ink lay just plays the convex lens effect behind overcuring, can make more concentrated area directive the place ahead of light, improves light utilization, energy-conserving and environment-protective.
2, in the blank territory element of each of screen printing forme of the present invention, the perforate percentage successively decreases to blank edges of regions gradually from blank zone is central, like this, not only be conducive to strengthen the effect of above-mentioned the 1st middle ink lay " the thick middle both sides are thin gradually ", can also further form the effect of " thick middle and thin gradually " all around, make the convex lens better effects if.
3, ink lay can directly print and cement on the chip, simplifies the production process of each LED lamp, and simple in structure, cost is low.
4, the ink lay convex lens shape of Huo Deing is obvious, and its curvature is reliable and stable, big random fluctuation can not occur.
Description of drawings
Fig. 1 is that a kind of LED lamp substrate, chip, three plan position approach, design and printing position concern schematic diagram.
Fig. 2 is the scraper plate shape schematic diagram that printing LED lamp shown in Figure 1 adopts.
Fig. 3 is the screen printing forme structural representation that printing LED lamp shown in Figure 1 adopts.
Fig. 4 is the perforate percentage change rule schematic diagram of each blank territory element inside among Fig. 3.
Fig. 5 is the ink lay plan position approach schematic diagram that the LED wick sheet of employing embodiment one packaging technology obtains above.
Fig. 6 is A-A section enlarged diagram among Fig. 5.
Fig. 7 is B-B generalized section among Fig. 5.
Fig. 8 is the ink lay plan position approach schematic diagram that the LED wick sheet of the packaging technology of embodiment two obtains above.
Fig. 9 is C-C section enlarged diagram among Fig. 8.
Figure 10 is D-D generalized section among Fig. 8.
Figure 11 is the product generalized section that the technology of embodiment three obtains.
Embodiment
Embodiment one
A kind of method of LED wick sheet encapsulation transparent adhesive tape, adopt the technology of silk screen printing, printed transparent adhesive tape is selected the UV embossed printing ink for use, may further comprise the steps: (1), according to the arrangement position of LED wick sheet 5 at LED lamp substrate 1, design printing position 11, as shown in Figure 1, the corresponding design of each chip has a printing position 11, this printing position 11 covers corresponding chip 5, and the central point at printing position is aimed at the central point of chip; The position 11 of respectively printing that designs is arranged as triplex row four row, has 12 printing positions, corresponding to 12 chips 5, as shown in Figure 1; (2), according to printing position 11 preparation screen printing forme 2 and the scraper plates 3 that design; Shown in Figure 3, prepared screen printing forme 2 has 12 blank territory elements 21, the size of each blank territory element 21, position are corresponding identical one by one with designed printing position 11, each blank territory element 21 of screen printing forme also is arranged as triplex row four row, have non-blank regionally 22 between every adjacent two row, also have non-blank regional 22 between every adjacent two row.In each blank territory element 21 of prepared screen printing forme, the perforate percentage of screen printing forme successively decreases to edges of regions gradually from zone central authorities, as shown in Figure 4, the perforate percentage of screen printing forme is from a zone, the b zone, c successively decreases successively to the d zone in the zone, certainly at a intra-zone, the perforate percentage of screen printing forme also is to successively decrease gradually from the inside to surface, the b zone, the c zone also is like this to the d zone, therefore in each blank territory element, the perforate percentage is to diminish gradually from the inside to surface, being that mesh (referring to through hole) closeness is stepless successively decreases gradually, the site becomes number to reduce gradually that (stain of illustrating among Fig. 4 represents blind hole, namely this hole is plugged, so stain increases from the inside to surface gradually).Shown in Figure 2, the base of prepared scraper plate 3 is formed with three arc notch 31, the quantity of arc notch is identical with the line number of the blank territory element of screen printing forme, and the position of each arc notch 31 and the screen printing forme wherein position of the blank territory element 21 of delegation are corresponding; (3), beginning silk-screen operation, screen printing forme 2 is placed on the LED lamp to be printed, make the blank territory element 21 of each screen printing forme aim at the printing position 11 of respective chip; End at screen printing forme is poured the UV embossed printing ink into, scraper plate 3 is begun to scrape from the screen printing forme face from an end of pouring the UV embossed printing ink into, move towards the screen printing forme other end, the direction that scraper plate moves be make the central point of each breach of scraper plate keep aiming at the center line of blank territory element of screen printing forme corresponding line always (the M point is the central point of first breach 31 among Fig. 2, Fig. 3 cathetus m is the center line of the blank territory element of first row, scraper plate scrapes in the process, the M point keep being aligned in straight line m directly over, the central point of all the other two breach 31 therewith roughly the same), make thus on the UV embossed printing ink bites each chip from each blank territory element, form ink lay 4 at each chip, its plan position approach relation as shown in Figure 5; Shown in Figure 6, these ink lay 4 thick middle left and right sides are thin; From other direction, these ink laies also are that both sides are thin before and after the thick middle, and as shown in Figure 7, therefore in fact ink lay 4 is attenuation gradually around the thick middle, forms convex lens; Then have the subregion not stamp the UV embossed printing ink between each adjacent chips, these do not have the regional location of stencil corresponding with non-blank regional 22 position; (4), allow the LED lamp that is printed on ink lay accept the ultraviolet ray irradiation, ink lay is solidificated on each chip.
Embodiment two
The main distinction of embodiment two technologies and embodiment one is following three aspects:
(a), the arrangements of chips of embodiment two printing becomes delegation's four row, therefore the position 11 of respectively printing that designs is arranged as delegation's four row, as shown in Figure 8; The blank territory element of screen printing forme is arranged as delegation's four row, and the ink lay unit (convex lens) that obtains is arranged as delegation's four row;
(b), in embodiment two, the arc notch quantity of scraper plate has only one;
(c), in embodiment two, in the blank territory element of each of prepared screen printing forme, the perforate percentage of screen printing forme from central authorities to around remain unchanged, therefore the ink lay unit (convex lens) that obtains is convex at C-C to section, forms the thin ink lay in the thick middle left and right sides, as shown in Figure 9, then approximate rectangular on the section at D-D, as shown in figure 10, the whole light guide effect that still has convex lens, also bootable light concentrated area directive the place ahead more.
All the other and embodiment one are basic identical.
Embodiment three
The main distinction of embodiment three technologies and embodiment two is:
(a), in embodiment three, the perforate percentage of screen printing forme successively decreases to edges of regions gradually from zone central authorities;
(b), in embodiment three, the position of respectively printing that designs is arranged as delegation's four row, but it is not at interval obvious between each row, there is not non-blank zone in the blank territory element adjacent columns of screen printing forme yet, the ink lay unit (convex lens) that obtains is arranged as delegation's four row, but be not interrupted between the adjacent columns, as shown in figure 11.
In the present specification, so-called " OK " is comparatively speaking with " row ", and both can exchange, and only observer's angle change 90 spent.For example, if the chip of LED lamp has 5 row 30 row, we also can understand conversely to become and have 30 row, 5 row.In addition, " several rows " can refer to delegation, two row or multirows, and " some row " can refer to row, two row or multiple rows." the some row of several rows " can refer to delegation's one row under special circumstances.
In the silk-screen field, some regional mesh of screen printing forme is through hole, and other regional mesh are blocked; During printing, printing ink drains to stock by through hole, and the zone that mesh stops up does not then stay printing ink, thereby the printing ink marks that acquisition has shape forms picture and text.In the present specification, " the blank zone " of so-called screen printing forme refers to that mesh is the zone of through hole; " the non-blank zone " of so-called screen printing forme refers to the zone that mesh is blocked." the blank territory element " of so-called screen printing forme refers to each chip to the blank zone of small pieces should be arranged, and the blank zone of these small pieces just is called one " blank territory element ".If two chips suffer very closely, then " the blank territory element " of two chip correspondences can suffer very closely even connect together.
In traditional silk-screen field, screen printing forme " perforate percentage " is used for control printing ink of the same race and has different shading effects at different parts, and the ink colors that print off in the zone that the perforate percentage is more big is more dense.So-called perforate percentage refers to the ratio of certain regional open interior area of screen printing forme and this regional gross area.Certain regional opening percentage is more big, and then perforate closeness is more big, and the site becomes number more big; The perforate percentage is more little, and then perforate closeness is more little, and the site becomes number more little.
Claims (2)
1. the method for LED wick sheet encapsulation transparent adhesive tape, it is characterized in that adopting the technology of silk screen printing, packaged transparent adhesive tape is selected the UV embossed printing ink for use, may further comprise the steps: (1), according to the arrangement position of LED wick sheet at LED lamp substrate, design the printing position, the corresponding design of each chip has a printing position, and this printing position covers corresponding chip, and the central point at printing position is aimed at the central point of chip; The position of respectively printing that designs is arranged as several rows; (2), prepare screen printing forme and scraper plate according to the printing position that designs, prepared screen printing forme has several blank territory elements, the size of each blank territory element, position are corresponding one by one with designed printing position, and each blank territory element of screen printing forme also is arranged as several rows; In each blank territory element of prepared screen printing forme, the perforate percentage successively decreases to this edges of regions gradually from these zone central authorities; The base of prepared scraper plate is formed with several arc notch, and the quantity of arc notch is identical with the line number of the blank territory element of screen printing forme, and the position of each arc notch and the screen printing forme wherein position of the blank territory element of delegation are corresponding; (3), screen printing forme is placed on the LED lamp to be packaged, make the blank territory element of screen printing forme aim at the printing position of respective chip; End at screen printing forme is poured the UV embossed printing ink into, scraper plate is begun to scrape from the screen printing forme face from an end of pouring the UV embossed printing ink into, the direction that scraper plate scrapes is to make the central point of each breach of scraper plate keep aiming at the center line of the blank territory element of screen printing forme corresponding line always, make the UV embossed printing ink print to each above chip from each blank territory element thus, form the thin ink lay in thick middle both sides; (4), allow the LED lamp that is printed on ink lay accept the ultraviolet ray irradiation, make ink lay be solidificated in each above the chip.
2. LED wick sheet according to claim 1 encapsulates the method for transparent adhesive tape, it is characterized in that: the arrangements of chips of packaged LED lamp becomes the some row of several rows, each blank territory element of prepared screen printing forme also correspondence is arranged as the some row of several rows, have non-blank zone between every adjacent two row, also have non-blank zone between every adjacent two row.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110263704 CN102420273B (en) | 2011-09-07 | 2011-09-07 | Method for packaging transparent glue on LED (Light-emitting Diode) lamp chip |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110263704 CN102420273B (en) | 2011-09-07 | 2011-09-07 | Method for packaging transparent glue on LED (Light-emitting Diode) lamp chip |
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| Publication Number | Publication Date |
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| CN102420273A CN102420273A (en) | 2012-04-18 |
| CN102420273B true CN102420273B (en) | 2013-10-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201110263704 Expired - Fee Related CN102420273B (en) | 2011-09-07 | 2011-09-07 | Method for packaging transparent glue on LED (Light-emitting Diode) lamp chip |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104127107A (en) * | 2013-04-30 | 2014-11-05 | 鸿富锦精密工业（深圳）有限公司 | Electronic incense manufacturing method |
| CN106558641B (en) * | 2015-09-30 | 2018-02-13 | 江苏诚睿达光电有限公司 | A kind of compact-type organic siliconresin light conversion body brush seals dress LED process |
| CN105702836A (en) * | 2016-04-26 | 2016-06-22 | 苏州瑞而美光电科技有限公司 | Silk screen packaging method for white light semiconductor lighting module |
| CN107579148A (en) * | 2016-07-05 | 2018-01-12 | 深圳市瑞丰光电子股份有限公司 | LED packaging plastics molding structure and its method |
| CN109946881A (en) * | 2019-04-19 | 2019-06-28 | 深圳市中深光电股份有限公司 | A kind of liquid crystal display die set of front light source |
| CN114464604B (en) * | 2021-07-16 | 2023-04-11 | 荣耀终端有限公司 | Display device, electronic equipment and packaging method of backlight module |
| CN113910793B (en) * | 2021-11-05 | 2023-04-25 | 东莞市中麒光电技术有限公司 | LED display module manufacturing method and LED display module |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4935665A (en) * | 1987-12-24 | 1990-06-19 | Mitsubishi Cable Industries Ltd. | Light emitting diode lamp |
| CN101894889A (en) * | 2009-05-19 | 2010-11-24 | 上海科学院 | Method for preparing white light LED |
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2011
- 2011-09-07 CN CN 201110263704 patent/CN102420273B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4935665A (en) * | 1987-12-24 | 1990-06-19 | Mitsubishi Cable Industries Ltd. | Light emitting diode lamp |
| CN101894889A (en) * | 2009-05-19 | 2010-11-24 | 上海科学院 | Method for preparing white light LED |
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Owner name: GUANGDONG AWARD NEW OPTOELECTRONIC TECHNOLOGY CO., Free format text: FORMER OWNER: XIE LAIFA Effective date: 20120306 |
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Effective date of registration: 20120306 Address after: Longhu district outside the town of sand 515000 Guangdong province Shantou City Yingbin Road Industrial Zone 1 Applicant after: Guangdong Award New Optoelectronic Technology Co., Ltd. Address before: 515000 Yingbin Road South, town, Longhu District, Guangdong City, Shantou Province, China Applicant before: Xie Laifa |
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