TWI264136B - AC-driven multiple light emitting diode (LED) structure with surge protection substrate - Google Patents

AC-driven multiple light emitting diode (LED) structure with surge protection substrate Download PDF

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TWI264136B
TWI264136B TW94129181A TW94129181A TWI264136B TW I264136 B TWI264136 B TW I264136B TW 94129181 A TW94129181 A TW 94129181A TW 94129181 A TW94129181 A TW 94129181A TW I264136 B TWI264136 B TW I264136B
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Taiwan
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light
emitting diodes
group
emitting diode
substrate
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TW94129181A
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Chinese (zh)
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TW200541123A (en
Inventor
Lian-Bi Jang
Yu-Lin Li
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Univ Chang Gung
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Abstract

An AC-driven multiple light emitting diode (LED) structure having a surge protection substrate includes: a plurality of LEDs having a first LED group and a second LED group connected in parallel with each other, and the first LED group is connected in series along a first direction, and the second LED group is connected in series along the direction opposite to the first direction; a driving circuit electrically connected to the first and second LED groups; and an AC power electrically connected to both ends of the first and second LED groups through the driving circuit. The plurality of LEDS constitute a flip chip LED structure with a surge protection substrate, and the driving circuit is situated on the surge protection substrate, so that the surge protection components can prevent the plurality of LEDs from being damaged by the surge of a static discharge.

Description

1264136 九、發明說明: 【杳明所屬之技術領域】 本發明係關於發光二極體頜域,更係關於—種具有突波 保護性基板之交流驅動多發光二極體結構。 【先前技術】 ^,故被冀 然而,發光 技術仍嫌不 "" 極體因具有低功率》肖耗及筹命長等優1264136 IX. Description of the invention: [Technical field to which the invention pertains] The present invention relates to a light-emitting diode jaw domain, and more particularly to an AC-driven multi-light-emitting diode structure having a surge protective substrate. [Prior technology] ^, it is 冀 However, the illuminating technology is still not too "" The polar body has low power, such as Xiao consumption and long life

主/1用方、日常生活中,也處於積極研發階段中。 二極體仍有其諸多缺點,如發光亮度及交流驅動 足等。 肢為一種前向驅動兀件,其在逆向偏壓加卜日士 並無法發本 , ^ 九。如一所示為習用驅動發光二極體發光之電路 圖。如圖所-^ 、, 不’該驅動電路10直接以一直流電DC驅動發光 Μ光—極體D以發光,如此形成之光源會因前述逆偏不發 光原理而有閃爍情形,其閃爍週期約為〗八刊 之閃燦週期1/60秒,故仍有改善的必要。大…灯 你加山 — 1…〜一徑篮之技術 如圖二所示。該交流驅動電路20包含二反向並聯 的發光二極體D】,D2, _ ^ ^ 了及一 I光一極體在正偏與負偏存 守幸兩〉,IL發光,故閃爍情形將會改善。 然而,由於-般原始供電規格皆為ιι〇伏特或謂伏特, ^此的電壓並無法為H㈣所承受,故電源需加以降壓 俊方能為發光二極體使用。圖三所示為一種包含 1264136 電源AC ' 變壓器T及一發光二極體DI.D2。籍由該變壓 器Τ之降壓作用,發光二極體D1 .,D2便能正當發光。 然而,變壓器使用使驅動電路的成本提高、故提出一種 交流驅動多發光二極體之驅動電路確實為業界所亟需者:又 若能將該種驅動電路結合靜電保護元件以達靜電保護功能· 則如此形成之交流驅動多發光二極體結構實為具競爭力之 結構。 *【發明内容】 鑑於上述問題,本發明之一目的即在於提出一種具有突 波保護性基板之交流驅動多發光二極體結構,其包含複數個 發光二極體,包含第一組及第二組互相並聯之發光二極體, 該第一組發光二極體以第一特定方向串連,該第二組發光二 極體以一相反方向串連;一驅動電路,與該第一及第二組發 光二極體電性相接,及一交流電源’透過該驅動電路與該弟 φ —及第二組發光二極體之二端電性相接,其中該複數個發光 二極體皆為一與一突波保護性基板構成之發光二極體覆晶 結構,且該驅動電路位於該突波保護性基板上,其中該突波 保護性基板係用以使該複數個發光二極體不受靜電放電等 突波的破壞。 在一實施例中,該保護性基板包含一氧化鋅基板、或一 組齊納二極體基板、或一閘流體(SCR)基板、或金屬/絕緣 層/金屬(Μ I Μ )三層結構電容覆晶基板。 藉由本發明之實施,至少下列優點可被獲致:1.保護性 1264136 基扳的存在可保益、卜-t f , 叱努凡一極體不受靜電之破 串聯之設置可耐古斤 仅心.¾光二 、 了阿堡,並可提升亮度。3·正向反向土^ 故能源成本得以節省。 σ句^ 【實施方式】 本發明揭震—插g 士&、+ 口種一有犬波保護性基板之 發光二極體結椹,Γ/ T心 又’驅 冓乂下私以較佳實施例說明之,兮、一 後附相關圖式。 Μ逞' 圖四所示為士代ΗΒ丄 示意圖。如圖所八Υ^光一極體交流驅動電路實; 數個發光二極體:,路40包含~交流電源Α 之發光二極體二:別設於二同, 二極體D互為及 ,、中5亥一路徑P1,P2上 句反向排列。現假今兮堃义 上丨 壓為2伏特,則σ 〜寻赉先二極體D之、 接收11〇伏特的交流 4〇 μ先二極體乃即- 22〇伏特的交流電二::先加以降壓,當然亦, 此外,去$ & + 一要乜增該發光二極體的數#丨 此汁 田又流電源AC所供之雷声於不干广 J默里ί 上發光二極體D發光,ρ9路^處於正笔壓週期時,Ρ 當交流電源AC所供之電處於自+ 先—極D不3 二極體D發光,P1路徑上 ,Ρ2路徑- 式為之,隨時皆有一路护ρι才η 且υ不么先。』 故能達到交流驅動發光二極體的2乂的發光二極體D 干,圖圖四所示驅動電路的驅動結構示意圖η 路「圖中未示Ί及發光二極坪鋅基板電極52及.! IX ^ -tt ^ ^ . 私D,其中氧化鋅基板5 寻發光二極體0使不受靜電破壞,其詳細說〖 氣=二發明5所提甲之另—專利申請案號941 194〇9,-'、、、 種保護一化合物半導體免於靜電放電〔ESD J ; 極體 光, 多 參閱 例的 及複 串接 發光 作電 直接 使用 可。 路徑 光; 發光 此方 光, 圖所 動線 係用 可參 標題 壞的 1264136 力沄」。此時、氧化鋅基每〜 動線路不似一般傳統驅•广I上及内設有驅動線路。該等驅 外,該等電極52與驅動路皆製作於印刷電路板上。此 進行,即穿孔、表面為著忍袼之連接可經由下列數種方式 得以其它具防止靜電破请t打線方式。此外,氧化鋅基板5] 發光二極體相等數量之二%力的保護性基板代替使用,如與 及金屬/絕緣層/金屬二納二極體基板、閘流體(S(:R)基板 其金屬/絕緣層/金屬Μ%)二層結構電容覆晶基板等,尤 具有電容,並因此與發光〜i]Vl )二層結構電容覆晶基板本身即 增進發光之穩定。〜極體本身形成整流濾波作用,可 圖六所示為本發明之 例的示意圖。如圖所示,▲〜發光二極體交流驅動電路實施 及發光二極體D,豆形式碡驅動電路6〇包含一交流電源AC 路中,該等發光-極/ :與橋式整流器相同。在該驅動電 上,且部份發二分別位於發光二極體路徑。1,。2 上。當交流電源AC所供之:位於發光二極體路徑P1及P2 获朵—故碰ΓΛ V ^電處於正電壓週期時,P1路徑上 I光—極體D發光,p ? 交流電源AC所供之電;:傻上的發光二極體〇不發光;當 -^ η ^ ?' 兒處杰負電壓週期時,Ρ2路徑上發光一 極體D發光,ρ 1路徑 "^ ~ 為之,隨時皆有一路4? 不發光。以此方式 能達到交流驅動發光—二1,ρ 2上的發光二極體d發光,故 的發光二極體數目ΐ力·^之實。同樣地,ρι及p2路徑上 的電源,舍贫29〇彳1適當設計,以使能直接使用no伏特 體的數旦二^ -特的電源亦得使用,只要倍增發光二極 由本發明之實I,多個發光二極體得_壓而輕易為原 :,流電源所驅動,不需再經過變壓器之降壓作用,故 省變辱哭的材料費,7 ^ 土 σ 二貝 亚能提升亮度。此外,氧化鋅等保護性 &板的存在使仔該發光二極體交流驅動結構中的發光二 體得免於受到靜電的破壞。 最後,本%明已針對特定實施例詳述如上,但熟習該項 1264136 技術者得在不違本發明之精神及範圍的條件下對本發明加 以改變或更動◦舉例而言,互相反向並聯的同向串接發光二 極體組數可為任意,但仍以相同為較佳;任意反向並聯同向 相接發光二極體組的設計皆屬於本發明之實施例。該等改變 或更動仍不脫離本發明之範圍,本發明之精神及範圍將定義 如下述之申請專利範圍中。 【圖式簡單說明】 本發明之優點及特徵將在下述說明後變得更為詳 細易懂,該等圖式中: 圖一為一習知發光二極體驅動電路的示意圖; 圖二為一習知發光二極體交流驅動電路的示意圖; 圖三為另一習知發光二極體交流驅動電路的示意 圖; 圖四為本發明之一發光二極體交流驅動電路實施 例的示意圖; 圖五為圖四之交流驅動電路的驅動結構示意圖;及 圖六為本發明之另一發光二極體交流驅動電路實 施例的示意圖。 【主要元件符號說明】 AC 交流電源The main / 1 user, in daily life, is also in the active research and development stage. The diode still has many shortcomings, such as brightness and AC drive. The limb is a forward-acting element, and its reverse bias is not able to issue a book, ^9. As shown in the figure, it is a circuit diagram of a conventional driving light-emitting diode. As shown in the figure, the driving circuit 10 directly drives the illuminating illuminating-polar body D to emit light, and the light source thus formed may have a flickering condition due to the reverse-non-lighting principle, and the blinking period is about For the eight-year flash cycle of 1/60 seconds, there is still a need for improvement. Big...lights You add mountains — 1...~The technology of a basket is shown in Figure 2. The AC driving circuit 20 includes two anti-parallel LEDs D, D2, _ ^ ^ and an I-light body in the positive and negative biases, and the IL emits light, so the flashing situation will improve. However, since the original power supply specifications are all ι 〇 volt or volt, ^ this voltage can not be H (four), so the power supply needs to be stepped down. Jun Fang can be used for the light-emitting diode. Figure 3 shows an AC 2 'transformer T and a light-emitting diode DI.D2 including a 1264136 power supply. Due to the anti-pressure effect of the transformer, the light-emitting diode D1., D2 can properly emit light. However, the use of transformers increases the cost of the drive circuit, so it is indeed desirable for the drive circuit of an AC-driven multi-light-emitting diode to be: if the drive circuit can be combined with an electrostatic protection component to achieve electrostatic protection. The AC-driven multi-light-emitting diode structure thus formed is a competitive structure. SUMMARY OF THE INVENTION In view of the above problems, an object of the present invention is to provide an AC-driven multi-light-emitting diode structure having a surge protective substrate, comprising a plurality of light-emitting diodes, including a first group and a second a plurality of light-emitting diodes connected in parallel with each other, the first group of light-emitting diodes being connected in series in a first specific direction, the second group of light-emitting diodes being connected in series in an opposite direction; a driving circuit, and the first and the second Two sets of light-emitting diodes are electrically connected, and an AC power source is electrically connected to the two ends of the second group of light-emitting diodes through the driving circuit, wherein the plurality of light-emitting diodes are a light-emitting diode flip-chip structure formed by one and a surge protective substrate, wherein the driving circuit is located on the surge protective substrate, wherein the surge protective substrate is used to make the plurality of light emitting diodes It is not damaged by surges such as electrostatic discharge. In one embodiment, the protective substrate comprises a zinc oxide substrate, or a set of Zener diode substrates, or a thyristor (SCR) substrate, or a metal/insulation layer/metal (Μ I Μ ) three-layer structure. Capacitor flip chip substrate. By the implementation of the present invention, at least the following advantages can be obtained: 1. The protection of the 1264136 base plate can be beneficial, the b-tf, the 叱Nanfan body is not protected by the static series connection can be resistant to the ancient heart .3⁄4 光二, Abao, and can increase the brightness. 3. Forward and reverse soils, so energy costs can be saved. σ句^ [Embodiment] The invention discloses the invention - the insertion of a light-emitting diode of a dog-wave protective substrate, the Γ/T heart and the 冓乂 冓乂 私 以In the description of the embodiments, the related drawings are attached. Μ逞' Figure 4 shows the schematic diagram of Shi Dai. As shown in the figure, the light-emitting diode of the light-emitting diode is as follows: several light-emitting diodes: the road 40 contains ~AC power supply Α The light-emitting diode 2: not set in the same two, the diode D is mutually In the middle of 5 Hai, the path P1, P2 is reversed. Nowadays, the pressure on the 兮堃 为 is 2 volts, then σ ~ 赉 赉 二 二 、 接收 接收 接收 接收 接收 接收 接收 接收 接收 接收 接收 接收 接收 接收 接收 接收 接收 接收 接收 接收 接收 接收 接收 接收 接收 接收 接收 接收 接收 接收 接收 接收 : : : : : : : Take the buck, of course, in addition, go to $ & + one to increase the number of the LEDs #丨 This juice field and the power supply AC is supplied by the thunder in the dry J Murray ί on the second The polar body D emits light, and the ρ9 way ^ is in the positive pen pressure cycle, Ρ when the AC power supply AC supplies the electricity from the + first-pole D not the 3 diode D, the P1 path, the Ρ2 path-style, At any time, there is a way to protect ρι才 η and υ not first. Therefore, it is possible to reach the two-inch LED of the AC-driven LED, and the driving structure of the driving circuit shown in Figure 4 is η. "The Ί and illuminating diode substrate electrode 52 is not shown. IX ^ -tt ^ ^ . Private D, in which the zinc oxide substrate 5 seeks the light-emitting diode 0 to be protected from static electricity, and the details thereof are as follows: qi = two inventions, five of the other ones - patent application number 941 194 〇9,-',,,,,,,, protect a compound semiconductor from electrostatic discharge [ESD J; polar body light, multi-reference example and complex tandem illumination for direct use. Path light; The moving line system uses the 1264136 which can be used to refer to the title. At this time, the zinc oxide base is not like the conventional drive, and the drive line is provided on the inside and inside. In addition to the drives, the electrodes 52 and the drive paths are fabricated on a printed circuit board. This is done, that is, the perforation and the connection of the surface for the endurance can be made by other means to prevent static electricity from being broken. In addition, the zinc oxide substrate 5] is equivalent to the use of a protective substrate of an equal number of 5% of the light-emitting diode, such as a metal/insulator/metal two-nano-substrate substrate, and a thyristor (S(:R) substrate. Metal/insulation layer/metal Μ%) Two-layer structure capacitor flip-chip substrate, etc., especially having a capacitance, and thus with the illuminating ~i]Vl) two-layer structure capacitor flip-chip substrate itself enhances the stability of luminescence. The polar body itself forms a rectifying and filtering effect, and Fig. 6 is a schematic view showing an example of the present invention. As shown in the figure, the ▲~light-emitting diode AC drive circuit is implemented and the light-emitting diode D, the bean-form 碡 drive circuit 6 〇 includes an AC power supply AC path, and the light-emitting diodes are: same as the bridge rectifier. On the driving power, and part of the two are respectively located in the light-emitting diode path. 1,. 2 on. When AC power supply AC is provided: the light-emitting diode paths P1 and P2 are obtained - so when the voltage is in a positive voltage cycle, the I-light body D on the P1 path emits light, p ? AC power supply AC The electricity; silly light-emitting diodes do not emit light; when -^ η ^ ?' in the negative voltage cycle, the Ρ2 path emits a polar body D, ρ 1 path " There is always a way 4? No light. In this way, it is possible to achieve the AC-driven luminescence--the luminescence of the illuminating diodes on the two 1, ρ 2 , so the number of the illuminating diodes is ΐ. Similarly, the power supply on the path of ρι and p2 is appropriately designed to make it possible to use a power supply of a few volts directly using no volts, as long as the doubling light-emitting diode is realized by the present invention. I, a plurality of light-emitting diodes are easily pressed as the original: the power source is driven, and there is no need to pass the pressure-reducing effect of the transformer, so the material cost of the insulting and crying is reduced, and the soil material can be improved. brightness. In addition, the presence of a protective & plate such as zinc oxide protects the light-emitting diode in the AC-driven structure of the light-emitting diode from static electricity. Finally, the present invention has been described in detail above with respect to the specific embodiments, but those skilled in the art can change or indirectly change the invention without departing from the spirit and scope of the invention. The number of the parallel-connected light-emitting diode groups may be arbitrary, but is still the same as the same; any reverse-parallel connection of the same-direction light-emitting diode group belongs to the embodiment of the present invention. The scope of the invention is defined by the scope of the invention as set forth below. BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention will become more apparent from the following description. FIG. 1 is a schematic diagram of a conventional light-emitting diode driving circuit; FIG. 3 is a schematic diagram of another conventional light-emitting diode AC driving circuit; FIG. 4 is a schematic diagram of an embodiment of an LED driving circuit of the present invention; FIG. 4 is a schematic diagram of a driving structure of an AC driving circuit of FIG. 4; and FIG. 6 is a schematic diagram of another embodiment of an LED driving circuit of the present invention. [Main component symbol description] AC AC power supply

DC 直流電 1264136 D,D1,D2 發 、卜 /G 二 極 體 P 1. P 2 發 光 --- 極 體 路徑 T 變 壓 器 10 驅 動 電 路 20 交 流 焉區 動 電 路 30 交 流 驅 動 電 路 40 交 流 驅 動 電 路 50 交 流 驅 動 結 構 51 氧 化 鋅 基 板 52 電 極 53 驅 動 線 路 60 交 流 驅 動 路 10DC DC 1264136 D, D1, D2 Transmitter, Bu/G Dipole P 1. P 2 Illumination--- Pole body path T Transformer 10 Drive circuit 20 AC drive circuit 30 AC drive circuit 40 AC drive circuit 50 AC drive Structure 51 Zinc Oxide Substrate 52 Electrode 53 Drive Line 60 AC Drive Way 10

Claims (1)

1264136 T、申請專利範圍: 種具有突波保護性基板t交、丨 結構,A ' 土板之又飢驅動多發光二極體 具包含: 光 坟數個發光二極體,包含第一組及第 二極^ 〇 、'且互相亚聯之發 丑,该第一組發光二極體以第一特定方向士 μ 組發光二極體以一相反方向串連; ,σ亥乐 及 -驅動線路,與該第一及第二組發光二極體電性相接; -交流電源,透過該驅動線路與該第—及第二一 極體之二端電性相接; 、' X Tt — 、其中該複數個發光二極體皆為一與該突波保護性基板構 成之發光二極體覆晶結構’且該驅動線路位於該保護性基板 上’其中該突波保護性基板係用以使該複數個發光二極體不 受突波破壞。 2.如申請專利範圍第^之具有突波保護性基板之交 流驅動多發光二極體結構,其中該第一及第二組發光二極體 各包含第/部份及弟二部份發光二極體,且該第一組發光二 極體之第二部份即為該第二組發光二極體之第二部份。 3 .如申請專利範圍第1項之具有突波保護性基板之交 流驅動多發光二極體結構,其中該具有突波保護性為一氧化 鋅基板、n納二極體基板、閘流體(剛基板或金屬/ 絕緣層/金屬(MIM)三層結構電容覆晶基板之其中一者。 4 ’ t π #利圍第丄a 2項之具有突波保護性基板 之交流驅動多發光二極體結構,其中該第一組及第二組發光 1264136 一極體各包含複數次組發光二極體 '且第一組及第二組發无 二極體中的複數次組發光二極體互相並聯。 > 5 *如申請專利範圍第1項之具有突波保護性基板之交 流驅動多發光二極體結構,其中該突波為靜電放電。 鲁十一、圖式: 如次頁1264136 T, the scope of application for patents: a type of turbulent protective substrate t-crossing, 丨 structure, A 'mesh hunger-driven multi-light diodes include: a number of light-emitting diodes, including the first group and The second pole ^ 〇, 'and the utopia of each other, the first group of light-emitting diodes in the first specific direction of the group μ light-emitting diodes in a reverse direction in series; σ 亥 乐 and - drive line Electrically connecting with the first and second groups of light-emitting diodes; - an alternating current power source electrically connected to the two ends of the first and second poles through the driving circuit; , 'X Tt — Wherein the plurality of light-emitting diodes are a light-emitting diode flip-chip structure formed by the surge protective substrate and the driving circuit is located on the protective substrate, wherein the surge protective substrate is used to make The plurality of light emitting diodes are not damaged by the surge. 2. The AC-driven multi-light-emitting diode structure having a surge protective substrate according to the patent application scope, wherein the first and second groups of light-emitting diodes respectively comprise a part/part and a second part of the light-emitting diode The second portion of the first group of light emitting diodes is the second portion of the second group of light emitting diodes. 3. The AC-driven multi-light-emitting diode structure having a surge protective substrate according to claim 1, wherein the surge protection is a zinc oxide substrate, a n-nano diode substrate, and a thyristor (just One of the substrate or metal/insulator/metal (MIM) three-layer capacitor flip-chip substrate. 4 ' t π #利围第丄a 2 of the AC-driven multi-light-emitting diode with a surge protective substrate The structure, wherein the first group and the second group of light-emitting 1264136 one-pole body each comprise a plurality of groups of light-emitting diodes' and the plurality of groups of light-emitting diodes of the first group and the second group of diode-free electrodes are connected in parallel with each other > 5 * An AC-driven multi-light-emitting diode structure having a surge protective substrate as claimed in claim 1, wherein the glitch is electrostatic discharge. Lu XI, Schema:
TW94129181A 2005-08-26 2005-08-26 AC-driven multiple light emitting diode (LED) structure with surge protection substrate TWI264136B (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI407827B (en) * 2009-12-09 2013-09-01 Richtek Technology Corp Light emitting device driver circuit and method for driving light emitting device

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101128075B (en) * 2006-08-18 2011-01-26 财团法人工业技术研究院 Lighting device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI407827B (en) * 2009-12-09 2013-09-01 Richtek Technology Corp Light emitting device driver circuit and method for driving light emitting device

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