1317564 九、發明說明： 【發明所屬之技術領域】 • 本發明係關於一種光源系統及背光模組，特別係關於 一種應用於液晶顯示裝置之LED光源系統及背光模組。 【先前技術】 LED ( Light Emitting Diode，發光二極體）從二十世紀 六十年代問世以來，已有40多年之發展歷史。由於LED具 有體積小、重量輕、壽命長、耗能少及無輻射等特點，故以 ®其作為背光模組之光源可提升該背光模組之整體性能。惟， 單個LED發光功率很小，一般係將複數LED按一定排列方 式安裝于電路基板後，再作為背光模組之光源系統。 請參閱圖1，一種習知之LED光源系統10，其包括複 數發光單元11，該發光單元11由二相互平行之第一電路基 板111及位於該第一電路基板111兩侧並連接該二第一電路 基板111之二第二電路基板112組成。其中，第一電路基板 鲁111上按綠色、紅色、藍色、綠色之順序週期設置有複數LED 燈源，且該複數LED燈源排佈於同一直線上，第二電路基 板112上設置有四LED燈源並以綠色、紅色、藍色、綠色 之順序排列同一直線上。 為使複數紅色LED燈源、藍色LED燈源及綠色LED燈 源發出之光充分混合形成白光，該複數LED燈源通常需排 佈於一定範圍内，而該第一電路基板111上之複數led燈 源集中排列於一條直線上’使得led燈源之排佈較為緊密。 但LED燈源為高發熱元件，複數LED燈源之緊密排佈易造 1317564 成使用該LED光源系統10之背光模組局部持續高溫，另， 該LED光源系統10之第一電路基板111及第二電路基板112 . 上之LED燈源需按綠色、紅色、藍色、綠色之順序依次排 列，組裝較為複雜。 【發明内容】 « 有鑒於此，提供一種具有較佳散熱性能之LED光源系 統及採用該LED光源系統之背光模組實為必要。 一種LED光源系統，其包括至少一發光單元，每一發 ® 光單元包括至少三並排設置之電路基板及複數LED燈源， 該複數LED燈源分設于上述電路基板上。 一種背光模組，其包括一 LED光源系統及若干光學膜 片，該LED光源系統包括至少一發光單元，每一發光單元 包括至少三並排設置之電路基板及複數LED燈源，該複數 LED燈源分設于上述電路基板上。 相較於習知技術，該LED光源系統之發光單元將複數 φ LED燈源分散於複數電路基板，有利於將LED燈源產生之 熱量散發至外界，可避免使用該光源系統之背光模組出現局 部溫度過高之現象。 【實施方式】 下面將結合附圖和複數實施例對本發明之LED光源系 統及背光模組作進一步之詳細說明。 請參閱圖2,本發明第一實施例提供一種LED光源系統 30，其包括至少一發光單元32，本實施例中，LED光源系 統30包括三發光單元32。該發光單元32包括並排設置之一 .13175641317564 IX. Description of the Invention: [Technical Field] The present invention relates to a light source system and a backlight module, and more particularly to an LED light source system and a backlight module applied to a liquid crystal display device. [Prior Art] Since its introduction in the 1960s, LED (Light Emitting Diode) has been in development for more than 40 years. Because LED has the characteristics of small size, light weight, long life, low energy consumption and no radiation, the use of ® as a light source of the backlight module can improve the overall performance of the backlight module. However, the single LED has a small luminous power. Generally, the plurality of LEDs are mounted on the circuit substrate in a certain arrangement, and then used as a light source system of the backlight module. Referring to FIG. 1 , a conventional LED light source system 10 includes a plurality of light emitting units 11 . The light emitting unit 11 is disposed on two sides of the first circuit substrate 111 and on both sides of the first circuit substrate 111 and connected to the first The circuit board 111 is composed of two second circuit substrates 112. The plurality of LED light sources are periodically arranged in the order of green, red, blue, and green, and the plurality of LED light sources are arranged on the same straight line, and the second circuit substrate 112 is provided with four The LED light sources are arranged on the same line in the order of green, red, blue, and green. In order to fully mix the light emitted by the plurality of red LED light sources, the blue LED light source and the green LED light source to form white light, the plurality of LED light sources are usually arranged in a certain range, and the plurality of first circuit substrates 111 are plural. The led light sources are arranged in a line on one line to make the arrangement of the led light sources more compact. However, the LED light source is a high-heating component, and the plurality of LED light sources are closely arranged and easy to manufacture 1317564. The backlight module using the LED light source system 10 is locally maintained at a high temperature, and the first circuit substrate 111 of the LED light source system 10 and the first The LED light source on the second circuit substrate 112 is arranged in the order of green, red, blue, and green, and the assembly is complicated. SUMMARY OF THE INVENTION « In view of the above, it is necessary to provide an LED light source system having better heat dissipation performance and a backlight module using the LED light source system. An LED light source system includes at least one light emitting unit, each light emitting unit includes at least three circuit boards disposed side by side and a plurality of LED light sources, and the plurality of LED light sources are disposed on the circuit substrate. A backlight module includes an LED light source system and a plurality of optical films, the LED light source system includes at least one light emitting unit, each light emitting unit includes at least three circuit boards disposed side by side and a plurality of LED light sources, and the plurality of LED light sources It is divided on the above circuit board. Compared with the prior art, the light-emitting unit of the LED light source system disperses a plurality of φ LED light sources on a plurality of circuit substrates, which is beneficial to dissipate heat generated by the LED light source to the outside, and can avoid the use of the backlight module of the light source system. Local temperature is too high. [Embodiment] Hereinafter, the LED light source system and the backlight module of the present invention will be further described in detail with reference to the accompanying drawings and the embodiments. Referring to FIG. 2, a first embodiment of the present invention provides an LED light source system 30 including at least one light emitting unit 32. In this embodiment, the LED light source system 30 includes three light emitting units 32. The lighting unit 32 includes one of the side by side settings. 1317564
第一電路基板321及二第二電路基板322，其中，第一電路 基板321和第二電路基板322均為長條狀，且第—電路基板 .321位於二第二電路基板322之間。第一電路基板321上設 置有複數排列於同一直線上且相互間隔之紅色LED燈源341 及藍色LED燈源342’兩側之第二電路基板322上設置有複 數綠色LED燈源343。在發光單元32中，相鄰之—紅色LED η 燈源341、一藍色LED燈源342及兩綠色LED燈源343構 成一發光部34,每一發光部34中之二綠色LED燈源343分 參別設置於紅色LED燈源341與藍色LED燈源342連線之中 垂線上。故每一發光單元32中之紅色LED燈源341、藍色 LED燈源342及綠色LED燈源343數量之比為1:1:2,從 而使整個LED光源系統30中之紅色LED燈源341、藍色 LED燈源342及綠色LED燈源343數量之比為1 : 1 : 2。 請參閱圖3,本實施例之LED光源系統30中之各個LED 燈源可通過設置於電路基板内之導線36連接。第一電路基 φ板321中之複數紅色LED燈源341通過導線36相互並聯’ 並被連接到設置於第一電路基板321 一端部之二電極38 上，複數藍色LED燈源342也通過導線36相互並聯，並被 連接到設置於第一電路基板321 —端部之另外二電極38 上。第二電路基板322中之複數綠色LED燈源343通過導 線36相互並聯，並被連接到設置於第二電路基板322 一端 部之二電極38上。 該LED光源系統30之發光單元32中之第一電路基板 321上僅設置有紅色、藍色兩種類型之LED燈源，第二電路 1317564 基板322上僅設置有綠色LED燈源，相較於習知技術在電 路基板上按綠色、紅色、藍色、綠色順序週期安裝複數LED 燈源之結構，在本實施例之電路基板上安裝led燈源之組 裝過程更為簡單’而且，每個發光單元32中之LED燈源分 ^ 佈於三電路基板321、322、323 ’且非直線排佈，故可使LED 燈源盡可能分散’有利於將LED燈源產生之熱量散發到外 界，另’由於人類視覺對綠色最為敏感，而本實施例之led 光源系統30中之紅色LED燈源、藍色[ED燈源及綠色LED 籲燈源之數量之比為1 : 1 : 2，可使該LED光源系統3〇具有 較佳之視覺效果。通過將LED光源系統3〇中之各個LED燈 源用導線連接至電源’還可實現區域色彩控制，即調整設於 每個電路基板端部之電極38之輸出電壓，可改變相應電路 基板上LED燈源之焭度，通過各個電路基板上LED燈源亮 度之調整，可混合出紅、藍、綠、白、紫、黃、粉紅等各種 不同之顏色。 # 請參關4’本發明$二實_提供—種應用上述哪 光源系統30之背光模組4〇,其包括一㈣光源系統％、 -反射罩42、-擴散板43、一擴散片44及一棱鏡片衫。該 光源系統3G可容置於反射罩42中，擴散板43、擴散 片44、棱鏡片45依次叠合于該咖光源系統如之上方。The first circuit substrate 321 and the second circuit substrate 322 are both elongated, and the first circuit substrate .321 is located between the two second circuit substrates 322. The first circuit board 321 is provided with a plurality of green LED light sources 343 provided on the second circuit board 322 which are disposed on the same straight line and spaced apart from each other on both sides of the red LED light source 341 and the blue LED light source 342'. In the light-emitting unit 32, the adjacent red LED η light source 341, a blue LED light source 342 and two green LED light sources 343 constitute a light-emitting portion 34, and two of the light-emitting portions 34 are green LED light sources 343. The sub-parameters are arranged on the vertical line connecting the red LED light source 341 and the blue LED light source 342. Therefore, the ratio of the number of red LED light source 341, blue LED light source 342 and green LED light source 343 in each light-emitting unit 32 is 1:1:2, so that the red LED light source 341 in the entire LED light source system 30 The ratio of the number of blue LED light source 342 and green LED light source 343 is 1: 1: 2. Referring to FIG. 3, each of the LED light sources in the LED light source system 30 of the present embodiment can be connected by wires 36 disposed in the circuit substrate. The plurality of red LED light sources 341 in the first circuit base φ board 321 are connected in parallel with each other through the wires 36 and are connected to the two electrodes 38 disposed at one end of the first circuit substrate 321, and the plurality of blue LED light sources 342 are also passed through the wires. 36 are connected in parallel to each other and are connected to the other two electrodes 38 provided at the ends of the first circuit substrate 321. The plurality of green LED lamp sources 343 in the second circuit substrate 322 are connected in parallel to each other via the wires 36, and are connected to the two electrodes 38 provided at one end of the second circuit substrate 322. The first circuit substrate 321 of the LED unit 30 of the LED light source system 30 is provided with only two types of LED light sources, red and blue, and the second circuit 1317564 is provided with only a green LED light source on the substrate 322. The prior art has a structure in which a plurality of LED light sources are periodically mounted on a circuit board in a green, red, blue, and green order. The assembly process of mounting a LED light source on the circuit substrate of the present embodiment is simpler. The LED light source in the unit 32 is distributed on the three circuit substrates 321, 322, 323' and is not linearly arranged, so that the LED light source can be dispersed as much as possible to facilitate the dissipation of heat generated by the LED light source to the outside. 'Because human vision is most sensitive to green, the ratio of the number of red LED light sources and blue [ED light source and green LED light source] in the LED light source system 30 of the present embodiment is 1: 1:2. The LED light source system 3 has a better visual effect. By connecting each LED light source in the LED light source system 3〇 to the power source by wire, regional color control can also be realized, that is, the output voltage of the electrode 38 provided at the end of each circuit substrate can be adjusted, and the LED on the corresponding circuit substrate can be changed. The brightness of the light source can be mixed with various colors such as red, blue, green, white, purple, yellow, and pink by adjusting the brightness of the LED light source on each circuit board. #请见关 4' The present invention is a backlight module 4A of the above-mentioned light source system 30, which includes a (four) light source system%, a reflection cover 42, a diffusion plate 43, and a diffusion sheet 44. And a prism sheet. The light source system 3G can be received in the reflector 42. The diffuser plate 43, the diffusion sheet 44, and the prism sheet 45 are sequentially superposed on the coffee light source system.
該背光模組4〇由於採用LED光源系統30,而該lED 光源系統30中之LED燈源八德仏*、…， 刀佈較為分散、便於散熱，故可 避免背光模組40中出現片却、w一 兄局部溫度過高之現象，且使該背光 模組40具有較佳之出弁妁Λ 由尤均勻性’另，通過改變各電路基板 1317564 上LED燈源之亮度，可取得紅、藍、綠、白、紫、黃、粉 紅等各種不同顏色之出射光。 請參閱圖5’本發明第三實施例提供一種LED光源系統 50，其具有與第一實施例相似之結構，其不同在於發光單元 52中之第一電路基板521及第二電路基板522尺寸相對減 小，使各電路基板間隔一定距離設置。由於該三塊電路板間 隔分佈，可使發光單元中52各LED燈源之間距相對第一實 施例中各LED燈源之間距保持不變之情況下，減少各電路 基板之面積’從而可降低LED光源系統之製作成本。 請參閱圖6,本發明第四實施例提供一種LED光源系統 60,其具有與第一實施例相似之結構，其不同在於第一電路 基板621沿Y軸方向之平分線！^將其分為相等之兩部分， 該紅色LED燈源641及藍色LED燈源642分別位於該平分 線L1之兩侧。由於該第—電路基板上之紅色咖燈°源料二 及藍色LED燈源642相互錯開且各成一列，可使該光 鲁源系統60較第-實施例中之LED光源系統％更^易於組 可以理解，LED光源系統6〇中之第一電路 可沿平分線L1分割為兩塊，這樣可使每—^ - 只設置有相同顏色之LED燈源，以便於組裝。 基板621被分割後，每-發光單元a均包括四塊電杯 即該LED光源系統60包括至少三塊電路基 土 基板也可間隔分佈。 〜四塊電: 可以理解，每一發光部64中之兩綠色LED燈源⑷ 1317564 可分佈於紅色LED燈源641及藍色LED燈源連線642之中 垂線之兩側’只要滿足每一發光部64中兩綠色LED燈源643 之連線與該發光部64中紅色LED燈源641及藍色LED燈源 642之連線相交即可。 請參閱圖7,本發明第五實施例提供一種LED光源系統 70，其包括至少一發光單元72，本實施例中，LED光源系 統70包括五個發光單元72。該發光單元72包括並排設置之The backlight module 4 〇 adopts the LED light source system 30, and the LED light source in the lED light source system 30 is Bide, and the knives are dispersed and convenient for heat dissipation, so that the chip in the backlight module 40 can be avoided. The phenomenon that the temperature of the parent is too high, and the backlight module 40 has a better uniformity. The other is uniform. By changing the brightness of the LED light source on each circuit board 1317564, red and blue can be obtained. , green, white, purple, yellow, pink and other different colors of the light. Referring to FIG. 5, a third embodiment of the present invention provides an LED light source system 50 having a structure similar to that of the first embodiment, except that the first circuit substrate 521 and the second circuit substrate 522 of the light emitting unit 52 are relatively sized. Decrease, so that each circuit board is set at a certain distance. Because the three boards are spaced apart, the distance between the LED light sources in the light-emitting unit 52 can be reduced, and the area of each circuit board is reduced, thereby reducing the area of each circuit board. The manufacturing cost of the LED light source system. Referring to Fig. 6, a fourth embodiment of the present invention provides an LED light source system 60 having a structure similar to that of the first embodiment, except that the first circuit substrate 621 is bisector along the Y-axis direction! ^ Divide it into two equal parts, and the red LED light source 641 and the blue LED light source 642 are respectively located on both sides of the bisector L1. Since the red coffee light source material source material 2 and the blue LED light source unit 642 on the first circuit substrate are staggered and arranged in a row, the light source system 60 can be made more than the LED light source system in the first embodiment. It is easy to understand that the first circuit in the LED light source system can be divided into two pieces along the bisector L1, so that each LED light source of the same color can be provided for assembly. After the substrate 621 is divided, each of the light-emitting units a includes four electric cups, that is, the LED light source system 60 includes at least three circuit base substrates which are also spaced apart. ~ four pieces of electricity: It can be understood that two green LED light sources (4) 1317564 in each of the light-emitting portions 64 can be distributed on both sides of the vertical line among the red LED light source 641 and the blue LED light source connection 642. The line connecting the two green LED light sources 643 in the light-emitting portion 64 may intersect the line connecting the red LED light source 641 and the blue LED light source 642 in the light-emitting portion 64. Referring to FIG. 7, a fifth embodiment of the present invention provides an LED light source system 70 including at least one light emitting unit 72. In this embodiment, the LED light source system 70 includes five light emitting units 72. The light unit 72 includes side by side
一第一電路基板721、一第二電路基板722及一塊第三電路 基板723，該三電路基板721、722、723均為長條狀，且第 一電路基板722位於第一電路基板721及第三電路基板723 之間。第二電路基板722上設置有複數排佈於同一直線上之 綠色LED燈源743，-側之第一電路基板721 排佈於同一直線上之紅色咖燈源 J有= 基板723上設置有複數拂饰於同一直線^之第^電路 742。發光單元72中，如* 之藍色LED燈源 相鄰一紅色led燈调741 LED燈源742及兩綠色τ 五源741、一藍色 巴1^!)燈源743形成一菸 一發光部74中之紅色^九口P74,每 匕燈源741及藍耷Tprk祕 分別設置於兩綠色1^0 #、 ±監色1燈源742 U廢源743連線之中#綠 發光單元72中之紅色Lp 甲垂線上。故母一 g 燈源 741、藍& τ 体 綠色LED燈源743之數量 、.色LED燈源742及a first circuit substrate 721, a second circuit substrate 722, and a third circuit substrate 723. The three circuit substrates 721, 722, and 723 are each elongated, and the first circuit substrate 722 is located on the first circuit substrate 721 and Between the three circuit substrates 723. The second circuit board 722 is provided with a plurality of green LED light sources 743 arranged on the same straight line, and the first circuit board 721 on the side is arranged on the same straight line. The red coffee light source J has a plurality of substrates 723拂 decorated in the same line ^ the second circuit 742. In the light-emitting unit 72, a blue LED light source such as * is adjacent to a red led light 741 LED light source 742 and two green τ five source 741, a blue bar 1 ^!) light source 743 forms a smoke-light-emitting portion 74 of the red ^ nine mouth P74, each light source 741 and blue 耷 Tprk secret set in two green 1 ^ 0 #, ± monitor color 1 light source 742 U waste source 743 connection # green light unit 72 The red Lp is on the vertical line. The number of the mother-g light source 741, the blue & τ body green LED light source 743, the color LED light source 742 and
光源系統70中之紅色比為1 1 · 2，從而使整個LED 石D燈源741、藍耷τ 版 綠色哪燈源743之數量之比為i ·· i : 2。燈源742及 該LED光源系統7〇之發光單元？！ 只設有同一顏色之LED妗、E ^ ^ 策路基板上均 廢線，故將LED燈源安裝到電路基 11 1317564 板上時不必區分LED燈源之顏色，可簡化組裝過程，另， 每個發光單元72中之LED燈源分散於三塊電路基板，有利 於將LED燈源產生之熱量散發到外界。 可以理解，本實施例中每一發光部74中之紅色LED燈 源741及藍色LED燈源742也可分別設置於兩綠色LED燈 源743連線之中垂線之兩侧，只要滿足該紅色LED燈源741 與藍色LED燈源742之連線與該發光部74中之兩綠色LED 燈源743之連線相交即可。 > 請參閱圖8,本發明第六實施例提供一種LED光源系統 80，其具有與第五實施例相似之結構，其不同在於發光單元 82中之第一電路基板821、第二電路基板822及第三電路基 板823尺寸相對減小，使各電路基板間隔一定距離設置。由 於該三塊電路板間隔分佈，可使發光單元82中各LED燈源 之間距相對第五實施例中各LED燈源之間距保持不變之情 況下，減少各電路基板之面積，從而可降低LED光源系統 |之製作成本。 綜上所述，本發明符合發明專利要件，爰依法提出專利 申請。惟，以上所述者僅為本發明之較佳實施方式，本發明 之範圍並不以上述實施例為限，舉凡熟習本案技藝之人士援 依本發明之精神所作之等效修飾或變化，皆應涵蓋於以下申 請專利範圍第内。 【圖式簡單說明】 圖1是一種習知LED光源系統之示意圖。 圖2是本發明第一實施例LED光源系統之示意圖。The red ratio in the light source system 70 is 1 1 · 2, so that the ratio of the number of the entire LED stone D source 741, the blue 耷 版 green light source 743 is i ·· i : 2. Light source 742 and the light source unit of the LED light source system 7? ! Only the LEDs of the same color and the E ^ ^ board are discarded. Therefore, when the LED light source is mounted on the circuit board 11 1317564, it is not necessary to distinguish the color of the LED light source, which simplifies the assembly process. The LED light source in the light-emitting unit 72 is dispersed on the three circuit boards, which is beneficial to dissipate the heat generated by the LED light source to the outside. It can be understood that the red LED light source 741 and the blue LED light source 742 in each of the light-emitting portions 74 in this embodiment may also be respectively disposed on two sides of the vertical line among the two green LED light source 743 lines, as long as the red color is satisfied. The connection between the LED light source 741 and the blue LED light source 742 and the connection of the two green LED light sources 743 in the light-emitting portion 74 may be performed. Referring to FIG. 8, a sixth embodiment of the present invention provides an LED light source system 80 having a structure similar to that of the fifth embodiment, except that the first circuit substrate 821 and the second circuit substrate 822 of the light emitting unit 82 are different. And the size of the third circuit substrate 823 is relatively reduced, and the circuit boards are arranged at a certain distance. Because the three boards are spaced apart, the distance between the LED light sources in the light-emitting unit 82 can be kept constant compared with the distance between the LED light sources in the fifth embodiment, thereby reducing the area of each circuit board, thereby reducing LED light source system | production costs. In summary, the present invention complies with the requirements of the invention patent and submits a patent application according to law. However, the above description is only a preferred embodiment of the present invention, and the scope of the present invention is not limited to the above-described embodiments, and those skilled in the art will be able to make equivalent modifications or variations in accordance with the spirit of the present invention. It should be covered in the scope of the following patent application. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a schematic view of a conventional LED light source system. 2 is a schematic view of an LED light source system according to a first embodiment of the present invention.
12 1317564 圖3是本發明第一實施例LED光源系統中各LED燈源 通過導線相互連接之示意圖。 圖4是本發明第二實施例背光模組之示意圖。 圖5是本發明第三實施例LED光源系統之示意圖。 圖6是本發明第四實施例LED光源系統之示意圖。 圖7是本發明第五實施例LED光源系統之示意圖。 圖8是本發明第六實施例LED光源系統之示意圖。 【主要元件符號說明】 (本發明） LED光源系統 30 、 50 、 60 ' 70 、 80 背光模組 40 發光單元 32、52、62 ' 72、82 第一電路基板 321 、 521 、 621 、 721 、 821 第二電路基板 322、522、622、722、822 第三電路基板 723 、 823 發光部 34 、 64 、 74 紅色LED燈源 341 、 641 、 741 藍色LED燈源 342 、 642 、 742 綠色LED燈源 343 、 643 、 743 導線 36 電極 38 (習知） LED光源系統 10 發光單元 11 13 111 1317564 112 第一電路基板 第二電路基板12 1317564 FIG. 3 is a schematic view showing the LED light sources of the LED light source system of the first embodiment of the present invention connected to each other by wires. 4 is a schematic view of a backlight module according to a second embodiment of the present invention. Figure 5 is a schematic illustration of an LED light source system in accordance with a third embodiment of the present invention. Figure 6 is a schematic illustration of an LED light source system in accordance with a fourth embodiment of the present invention. Figure 7 is a schematic illustration of an LED light source system in accordance with a fifth embodiment of the present invention. Figure 8 is a schematic illustration of an LED light source system in accordance with a sixth embodiment of the present invention. [Description of Main Components] (Invention) LED Light Source System 30, 50, 60' 70, 80 Backlight Module 40 Light Emitting Units 32, 52, 62' 72, 82 First Circuit Substrates 321, 521, 621, 721, 821 Second circuit substrate 322, 522, 622, 722, 822 third circuit substrate 723, 823 light emitting portion 34, 64, 74 red LED light source 341, 641, 741 blue LED light source 342, 642, 742 green LED light source 343, 643, 743 wire 36 electrode 38 (conventional) LED light source system 10 light unit 11 13 111 1317564 112 first circuit substrate second circuit substrate
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