TWM464691U - 直下擺設而側入光源之背光模組 - Google Patents
直下擺設而側入光源之背光模組 Download PDFInfo
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- TWM464691U TWM464691U TW102212186U TW102212186U TWM464691U TW M464691 U TWM464691 U TW M464691U TW 102212186 U TW102212186 U TW 102212186U TW 102212186 U TW102212186 U TW 102212186U TW M464691 U TWM464691 U TW M464691U
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Classifications
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0033—Means for improving the coupling-out of light from the light guide
- G02B6/0035—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
- G02B6/0015—Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it
- G02B6/002—Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it by shaping at least a portion of the light guide, e.g. with collimating, focussing or diverging surfaces
- G02B6/0021—Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it by shaping at least a portion of the light guide, e.g. with collimating, focussing or diverging surfaces for housing at least a part of the light source, e.g. by forming holes or recesses
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0066—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form characterised by the light source being coupled to the light guide
- G02B6/0073—Light emitting diode [LED]
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133603—Direct backlight with LEDs
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133613—Direct backlight characterized by the sequence of light sources
Description
本創作係屬於照明設備之技術領域,特別是關於一種薄形化之直下擺設而側入光源之背光模組,以直接將發光二極體之光源於一出光面上呈現均勻光強度分佈之出光效果而廣泛適用為各式液晶顯示器之顯示光源。
由於液晶顯示器係為一種不具有自發光功能之被動式顯示裝置,故需加裝背光模組以提供顯示面板所需之顯示光源,如此,背光模組產生之面光源是否具足夠且均勻之亮度即直接影響液晶顯示器的顯示品質。又,LED具有發光效率高、壽命長及耗電量低等特性而成為背光模組之應用光源首選,目前,背光模組依其結構可分為側光式(Edge Lighting)及直下式(Direct Lighting)兩種,其中,直下式背光模組將光源放置於正下方,具有高輝度、良好出光視角及高光利用效率等特色而適用於超大尺寸顯示器中;側光式背光模組採側邊入光之光源設計,具有輕量、窄框化及低耗電等特色而廣泛應用於18”以下之中小尺寸液晶顯示器中。
然而,習知直下式背光模組係透過矩陣排列複數個LED光源或平行置列複數個LED燈管於一背板上,再藉該背板上之反射板將光源反射向上後經導光板均勻分散,以期於其出光面獲得平面式之均勻出光效果。由此可知,該直下式背光模組將使用數量較多的LED光源或LED燈管且需求較大的光源安置空間,造成模組整體的厚度、重量及耗電量增加而不利於現行電子產品微型化及環保節能的訴求。
習知側入式背光模組係透過矩陣排列的方式將複數個LED
光源裝設於一背板之相對兩側上,再覆蓋一導光板於該背板上而引導並改變出光路徑,以期將LED光源之發射光均勻射出而解決其高指向性特性的問題。如此,該側入式背光模組雖可使用數量較少的LED光源或LED燈管,卻因光源僅設於兩側且受該導光板的導光效能限制影響,使模組中央部位照明亮度相較於兩側有明顯不足的情況發生而不利於模組出光面的整體光均度。
有鑑於此,如何改善LED光源之設置態樣及導光板之設計結構,以利用有別於習知直下式及側光式背光模組之模組架構提供絕佳的平面式均勻出光效果,同時,兼具薄形化、高光強度、符合環保節能及適合大尺寸化等特性,使供利於液晶顯示器產業之進一步發展而獲更高的經濟價值,即為本發明所亟欲改善之課題。
有鑑於習知技藝之問題,本創作之目的在於提供一種低耗電量之直下擺設而側入光源之背光模組,以透過交錯排列發光二極體的方式減少發光二極體使用數量的同時,改善光源光徑之分佈態樣而實現提升光照均勻度及降低色差分佈之功效。
根據本創作之目的,該直下擺設而側入光源之背光模組設有一基板、複數個第一發光二極體、複數個第二發光二極體及一導光板,該等第一發光二極體及該等第二發光二極體裝置於該基板上,且該導光板罩覆該等第一發光二極體及該等第二發光二極體,以供引導該等第一發光二極體及該等第二發光二極體之發射光而呈光強度均勻分佈之出光效果,其特徵在於:該等第一發光二極體係分別以一第一間距X相互間隔排列而朝一方向發射出光源,該方向平行該基板,且X範圍為0<X10公分(cm);該等第二發光二極體朝相對該方向之另一方向發射出光源,且分別對應各該第一間距相互間隔排列而交錯該等第一發光二極體排列,使於該基板上形成至少一光條(Light Bar)。
其中,該等第一發光二極體及該等第二發光二極體以一第二
間距Y相隔而平行交錯排列於該光條兩側,Y範圍為0<Y5cm,或者,該等第一發光二極體及該等第二發光二極體相互交錯排列於該光條之一直線上。
並且,該導光板係對應該光條而設有複數個凹槽,該等凹槽呈矩形空間設置而供容置該等第一發光二極體及該等第二發光二極體,且該導光板設有一反射微結構或網點,以將該等第一發光二極體及該等第二發光二極體所發射平行該基板之光源向上引導。
綜上所述,本創作係透過交錯排列LED光源成光條的方式大幅減少該等發光二極體的用量而降低耗電量,且使用該導光板取代空氣作為光徑引導的媒介,可有效降低模組之腔體高度至2~45mm而減小模組體積厚度,有利於目前電子產品薄形化的發展趨勢。再者,利用交錯分散光源光徑的方式及將該光條置於該導光板中央處而非邊緣處的方式,改善光的擴散角及整體色差分佈,以避免模組之出光面出現暗影而切實提升光均度。又,該光條直接貼設於該基板上,故可有效散熱。如此,該直下擺設而側入光源之背光模組係可同時擁有習知直下式及側入式背光模組兩者之優點。
1‧‧‧背光模組
10‧‧‧基板
11‧‧‧第一發光二極體
12‧‧‧第二發光二極體
13‧‧‧導光板
130‧‧‧凹槽
第1圖 係為本創作較佳實施例之一實施態樣之立體示意圖。
第2圖 係為本創作較佳實施例之一實施態樣之發光二極體擺置示意圖。
第3圖 係為本創作較佳實施例之二實施態樣之立體示意圖。
第4圖 係為本創作較佳實施例之二實施態樣之發光二極體擺置示意圖。
第5圖 係為本創作較佳實施例之二實施態樣之剖視示意圖。
為使 貴審查委員能清楚了解本發明之內容,謹以下列說明搭配圖式,敬請參閱。
請參閱第1、2圖,其係分別為本創作較佳實施例之一實施態樣之立體示意圖及發光二極體擺置示意圖。如圖所示,該直下擺設而側入光源之背光模組1有別於習知直下式及側光式顯示光源之概念而適用於各式顯示器中,其設有一基板10、複數個第一發光二極體11、複數個第二發光二極體12及一導光板13,該導光板13罩覆該等第一發光二極體11及該等第二發光二極體12,以供引導該等第一發光二極體11及該等第二發光二極體12之發射光而呈光強度均勻分佈之出光效果。該等第一發光二極體11及該等第二發光二極體12裝置於該基板10上,且該等第一發光二極體11係分別以範圍大於0且小於等於10cm之一第一間距X相互間隔排列而朝一方向發射出光源,該方向平行該基板10。該等第二發光二極體12朝相對該方向之另一方向發射出光源,且分別對應各該第一間距相互間隔排列而交錯該等第一發光二極體11排列,使於該基板10上形成至少一光條。如此,視該背光模組1出光面面積的大小增加該光條數量,即可達習知直下式背光模組之高出光視角且適用於大尺寸顯示器中之功效。
該等第一發光二極體11及該等第二發光二極體12除可相互交錯排列於該光條之一直線上外,亦可如圖3~5所示,其係分別為本創作較佳實施例之二實施態樣之立體示意、發光二極體擺置示意圖及剖視示意圖,該等第一發光二極體11分別以一第一間距相互間隔排列而朝一方向發射出光源,及該等第二發光二極體12分別對應各該第一間距而相互間隔排列時,該等第一發光二極體11之行列與該等第二發光二極體12之行列間,係以一第二間距Y相隔而使該等第一發光二極體11與該等第二發光二極體12平行交錯排列於該光條兩側,且由各該第一發光二極體11之封裝體中心點至各該等二發光二極體12之封裝體中心點計算,Y範圍為0<Y5cm。換言之,任兩第一發光二極體11與一第二發光二極體12,或任兩第二發光二極體12與一第一發光二極體11形成三角形擺置態樣,如此,可改善整體色差分佈,並提升輝度均勻度的同時可降低LED光源使用量而降低模組耗
電量,符合環保節能訴求。
並且,由於該等第一發光二極體11及該等第二發光二極體12可視為側向發光之設置型態,故為將光源引導至該背光模組1之出光面,該導光板13對應該光條而設有複數個凹槽130,該等凹槽130呈矩形空間設置而供容置該等第一發光二極體11及該等第二發光二極體12,且該導光板13設有一反射微結構或網點,以將該等第一發光二極體11及該等第二發光二極體12所發射平行該基板10之光源向上引導後,進一步均勻分佈光源路徑而切實實現高均光度之照明效果。
以上所述僅為舉例性之較佳實施例,而非為限制性者。任何未脫離本創作之精神與範疇,而對其進行之等效修改或變更,均應包含於後附之申請專利範圍中。
1‧‧‧背光模組
10‧‧‧基板
11‧‧‧第一發光二極體
12‧‧‧第二發光二極體
13‧‧‧導光板
130‧‧‧凹槽
Claims (5)
- 一種直下擺設而側入光源之背光模組,係設有至少一基板、複數個第一發光二極體、複數個第二發光二極體及一導光板,該等第一發光二極體及該等第二發光二極體裝置於該基板上,且該導光板罩覆該等第一發光二極體及該等第二發光二極體,以供引導該等第一發光二極體及該等第二發光二極體之發射光而呈光強度均勻分佈之出光效果,其特徵在於:該等第一發光二極體係分別以一第一間距X相互間隔排列而朝一方向發射出光源,該方向平行該基板,且X範圍為0<X10公分;該等第二發光二極體朝相對該方向之另一方向發射出光源,且分別對應各該第一間距相互間隔排列而交錯該等第一發光二極體排列,使於該基板上形成至少一光條。
- 如申請專利範圍第1項所述之直下擺設而側入光源之背光模組,其中該等第一發光二極體及該等第二發光二極體係以一第二間距Y相隔而平行交錯排列於該光條兩側,Y範圍為0<Y5公分。
- 如申請專利範圍第1項所述之直下擺設而側入光源之背光模組,其中該等第一發光二極體及該等第二發光二極體係相互交錯排列於該光條之一直線上。
- 如申請專利範圍第1項所述之直下擺設而側入光源之背光模組,其中該導光板係對應該光條而設有複數個凹槽,該等凹槽呈矩形空間設置而供容置該等第一發光二極體及該等第二發光二極體。
- 如申請專利範圍第4項所述之直下擺設而側入光源之背光模組,其中該導光板設有一反射微結構或網點,以將該等第一發光二極體及該等第二發光二極體所發射平行該基板之光源向上引導。
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TW102212186U TWM464691U (zh) | 2013-06-28 | 2013-06-28 | 直下擺設而側入光源之背光模組 |
CN201320400696.8U CN203384778U (zh) | 2013-06-28 | 2013-07-05 | 直下摆设而侧入光源的背光模块 |
US14/023,665 US20150003109A1 (en) | 2013-06-28 | 2013-09-11 | Direct edge-lit backlighting module |
DE202013104219.6U DE202013104219U1 (de) | 2013-06-28 | 2013-09-16 | Rand-Beleuchtung und Direkt-Beleuchtung kombinierendes Hintergrundlichtmodul |
JP2013005564U JP3187636U (ja) | 2013-06-28 | 2013-09-26 | 直取付型エッジライト式バックライトモジュール |
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TW102212186U TWM464691U (zh) | 2013-06-28 | 2013-06-28 | 直下擺設而側入光源之背光模組 |
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US (1) | US20150003109A1 (zh) |
JP (1) | JP3187636U (zh) |
CN (1) | CN203384778U (zh) |
DE (1) | DE202013104219U1 (zh) |
TW (1) | TWM464691U (zh) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI655480B (zh) * | 2017-04-27 | 2019-04-01 | 中強光電股份有限公司 | 背光模組及其面光源組件 |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104141909B (zh) * | 2014-05-16 | 2016-05-18 | 京东方科技集团股份有限公司 | 一种背光模组及显示装置 |
CN104880759B (zh) * | 2015-05-19 | 2019-02-26 | 武汉华星光电技术有限公司 | 背光单元及显示装置 |
CN104930387A (zh) | 2015-06-11 | 2015-09-23 | 合肥鑫晟光电科技有限公司 | Led灯条结构及其控制方法、背光模组、液晶显示装置 |
CN105258027B (zh) * | 2015-10-30 | 2018-11-27 | 北京京东方茶谷电子有限公司 | 背光模组及显示装置 |
CN109814199A (zh) * | 2019-02-22 | 2019-05-28 | 北京京东方茶谷电子有限公司 | 一种背光模组、显示模组和显示设备 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008029540A1 (fr) * | 2006-09-08 | 2008-03-13 | Sharp Kabushiki Kaisha | Dispositif d'illumination, élément d'émission de lumière et composant d'affichage à cristaux liquides |
US7980718B2 (en) * | 2007-05-10 | 2011-07-19 | Sharp Kabushiki Kaisha | Illuminating device, display device having it, and television receiver |
CN101688991A (zh) * | 2007-06-22 | 2010-03-31 | 3M创新有限公司 | 控制背光源输出特性的系统和方法 |
WO2009066646A1 (ja) * | 2007-11-20 | 2009-05-28 | Showa Denko K.K. | 光源連結体、発光装置、表示装置 |
CN101614325B (zh) * | 2008-06-27 | 2012-02-08 | 富准精密工业(深圳)有限公司 | 半导体照明装置 |
US20110038141A1 (en) * | 2009-08-11 | 2011-02-17 | Martin David Tillin | Lateral emission led backlight for lcd |
-
2013
- 2013-06-28 TW TW102212186U patent/TWM464691U/zh not_active IP Right Cessation
- 2013-07-05 CN CN201320400696.8U patent/CN203384778U/zh not_active Expired - Fee Related
- 2013-09-11 US US14/023,665 patent/US20150003109A1/en not_active Abandoned
- 2013-09-16 DE DE202013104219.6U patent/DE202013104219U1/de not_active Expired - Lifetime
- 2013-09-26 JP JP2013005564U patent/JP3187636U/ja not_active Expired - Fee Related
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI655480B (zh) * | 2017-04-27 | 2019-04-01 | 中強光電股份有限公司 | 背光模組及其面光源組件 |
Also Published As
Publication number | Publication date |
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JP3187636U (ja) | 2013-12-05 |
DE202013104219U9 (de) | 2014-08-28 |
DE202013104219U1 (de) | 2014-03-20 |
CN203384778U (zh) | 2014-01-08 |
US20150003109A1 (en) | 2015-01-01 |
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