TWI408462B - Backlight module and liquid crystal display - Google Patents
Backlight module and liquid crystal display Download PDFInfo
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- TWI408462B TWI408462B TW99120276A TW99120276A TWI408462B TW I408462 B TWI408462 B TW I408462B TW 99120276 A TW99120276 A TW 99120276A TW 99120276 A TW99120276 A TW 99120276A TW I408462 B TWI408462 B TW I408462B
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- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 28
- 238000003825 pressing Methods 0.000 claims abstract description 30
- 238000005452 bending Methods 0.000 claims description 32
- 230000003287 optical effect Effects 0.000 description 8
- 239000012788 optical film Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000010408 film Substances 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
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Abstract
Description
本發明是有關於一種背光模組以及液晶顯示裝置,且特別是有關於一種能良好地壓抵一整片導光板或拼接導光板(piece-coupled light guide plate)的背光模組以及液晶顯示裝置。 The present invention relates to a backlight module and a liquid crystal display device, and more particularly to a backlight module and a liquid crystal display device capable of being pressed well against a whole piece of light guide plate or piece-coupled light guide plate .
近年來,由於液晶顯示裝置以輕、薄、小及耗電低等特點,在筆記型電腦、數位相機、電視等電子影像產品上得到了廣泛的應用。 In recent years, liquid crystal display devices have been widely used in electronic imaging products such as notebook computers, digital cameras, and televisions because of their characteristics of being light, thin, small, and low in power consumption.
一般而言,液晶顯示裝置是由液晶面板與背光模組所構成。液晶面板藉由液晶分子的轉動與偏光板的作用,來改變光線在不同畫素區域的通過量,而在不同畫素區域造成明暗差異,以達到顯示影像之目的。 Generally, a liquid crystal display device is composed of a liquid crystal panel and a backlight module. The liquid crystal panel changes the throughput of light in different pixel regions by the rotation of liquid crystal molecules and the action of the polarizing plate, and causes light and dark differences in different pixel regions to achieve the purpose of displaying images.
由於液晶本身並不具備發光特性,所以需依賴背光模組提供面光源。背光模組可大致分為:側面入光式背光模組與直下式背光模組,其中,直下式背光模組需要較長的混光距離以達到均勻混光的效果,所以直下式背光模組的厚度較厚,不適於薄型顯示裝置的製作;而側面入光式背光模組可搭配發光二極體,具有厚度較薄的優勢。 Since the liquid crystal itself does not have the illuminating property, it is necessary to rely on the backlight module to provide the surface light source. The backlight module can be roughly divided into a side-input type backlight module and a direct-lit backlight module. The direct-type backlight module requires a long mixing distance to achieve uniform light mixing, so the direct-lit backlight module The thickness is thicker and is not suitable for the fabrication of a thin display device; and the side-lit backlight module can be combined with a light-emitting diode, which has the advantage of being thinner.
隨著液晶顯示裝置逐漸朝向大尺寸、高對比與薄型化等趨勢發展,側面入光式背光模組已成為主流,特別是,還提出以下的背光模組,亦即,此背光模組可利用拼接多 個小尺寸的導光板而得到大面積的拼接導光板,還可配合區域背光調控(Local Dimming)的方式來實現液晶顯示裝置之高動態對比的顯示效果。 As the liquid crystal display device gradually develops toward large size, high contrast and thinness, the side-lit backlight module has become the mainstream. In particular, the following backlight module is also proposed, that is, the backlight module can be utilized. More stitching A small-sized light guide plate can be used to obtain a large-area splicing light guide plate, and can also achieve a high dynamic contrast display effect of the liquid crystal display device by means of local area dimming.
然而,拼接導光板的平整度將影響背光模組所提供的面光源是否為均勻。換言之,若未能良好地固定拼接導光板及其下方的膜片等,將使拼接導光板及其下方的膜片產生翹起,而無法提供均勻的面光源。 However, the flatness of the spliced light guide plate will affect whether the surface light source provided by the backlight module is uniform. In other words, if the splicing light guide plate and the diaphragm below it are not well fixed, the splicing light guide plate and the diaphragm below it will be lifted, and a uniform surface light source cannot be provided.
另外,在側面入光式背光模組中,導光板及其上方的光學膜片之間未具有足夠的混光距離,也將造成面光源均勻度不足的問題。 In addition, in the side-lit backlight module, the light-guiding plate and the optical film above it do not have a sufficient light-mixing distance, which also causes a problem of insufficient uniformity of the surface light source.
有鑑於此,本發明提供一種背光模組,不但能良好地固定導光板及其下方的膜片,且能使導光板及其上方的光學膜片之間具有足夠的混光距離,以提供均勻的面光源。 In view of the above, the present invention provides a backlight module that not only can well fix the light guide plate and the diaphragm therebelow, but also has a sufficient light mixing distance between the light guide plate and the optical film above it to provide uniformity. Surface light source.
本發明提供一種液晶顯示裝置,具有上述的背光模組,能顯示具有良好品質的影像。 The present invention provides a liquid crystal display device having the above-described backlight module capable of displaying an image of good quality.
基於上述,本發明提出一種背光模組,包括:導光板、多數個發光元件、背框與支撐固定元件。導光板至少具有一貫孔。發光元件設置於導光板的側面。背框至少具有位置對應於貫孔的一破孔,導光板與發光元件設置於背框內。支撐固定元件具有一主體、一扣合部與至少一按壓部,扣合部連接於主體的一端,按壓部連接於主體的一側,其中,扣合部與部分主體穿過導光板的貫孔與背框的破孔, 扣合部扣合於背框,按壓部按壓導光板。 Based on the above, the present invention provides a backlight module comprising: a light guide plate, a plurality of light-emitting elements, a back frame and a support fixing element. The light guide plate has at least a uniform hole. The light emitting element is disposed on a side of the light guide plate. The back frame has at least one hole corresponding to the through hole, and the light guide plate and the light emitting element are disposed in the back frame. The supporting fixing component has a main body, a fastening portion and at least one pressing portion, the fastening portion is connected to one end of the main body, and the pressing portion is connected to one side of the main body, wherein the fastening portion and the partial body pass through the through hole of the light guide plate Broken holes with the back frame, The fastening portion is fastened to the back frame, and the pressing portion presses the light guide plate.
在本發明的一實施例中,上述的導光板為一單一板材,且具有多數個貫孔。 In an embodiment of the invention, the light guide plate is a single plate and has a plurality of through holes.
在本發明的一實施例中,上述的導光板為由多數個子導光板所拼接而成的拼接導光板,每一子導光板的至少一角落設有一凹陷,且由多個子導光板的凹陷拼接成多數個貫孔。 In an embodiment of the invention, the light guide plate is a spliced light guide plate formed by splicing a plurality of sub-light guide plates, and at least one corner of each of the sub-light guide plates is provided with a recess, and is spliced by a plurality of sub-light guide plates. Into a large number of through holes.
在本發明的一實施例中,上述每一子導光板具有相對向的一入光部與一拼接部,彼此相鄰的入光部與拼接部彼此結合而形成拼接導光板,在入光部與拼接部的結合處形成一容置空間,發光元件設置於容置空間中、且位於入光部的側面。 In an embodiment of the invention, each of the sub-light guide plates has a light incident portion and a joint portion, and the light incident portion and the joint portion adjacent to each other are combined with each other to form a splicing light guide plate, and the light incident portion is formed. An accommodating space is formed at the junction with the splicing portion, and the illuminating element is disposed in the accommodating space and located at a side of the light incident portion.
在本發明的一實施例中,上述的按壓部具有兩個,且兩個該按壓部連接於該主體的兩側。 In an embodiment of the invention, the pressing portion has two of the pressing portions, and the two pressing portions are coupled to both sides of the main body.
在本發明的一實施例中,上述的背框包括:一背板與一彎折元件,背板具有破孔,彎折元件鄰近於破孔且與背板形成一角度,彎折元件具有一卡合槽,導光板抵接於卡合槽,且兩個按壓部壓抵導光板。 In an embodiment of the invention, the back frame comprises: a back plate and a bending element, the back plate has a hole, the bending element is adjacent to the hole and forms an angle with the back plate, and the bending element has a The engagement groove, the light guide plate abuts against the engagement groove, and the two pressing portions are pressed against the light guide plate.
在本發明的一實施例中,上述在導光板的側面至少具有一凸耳,且凸耳抵接於卡合槽。 In an embodiment of the invention, the side surface of the light guide plate has at least one lug, and the lug abuts against the engagement groove.
在本發明的一實施例中,上述的背光模組更包括一光學板組合,抵接於主體。 In an embodiment of the invention, the backlight module further includes an optical plate assembly that abuts the main body.
在本發明的一實施例中,上述的背光模組更包括一反射片,設置於導光板的下方。 In an embodiment of the invention, the backlight module further includes a reflective sheet disposed under the light guide plate.
在本發明的一實施例中,上述的背光模組更包括一電路板,設置於反射片的下方,發光元件電性連接於電路板,反射片位於電路板與導光板之間。 In an embodiment of the invention, the backlight module further includes a circuit board disposed under the reflective sheet, the light emitting element is electrically connected to the circuit board, and the reflective sheet is located between the circuit board and the light guide plate.
在本發明的一實施例中,上述的背光模組更包括:一絕緣層,設置於電路板的下方,電路板位於反射片與絕緣層之間。 In an embodiment of the invention, the backlight module further includes: an insulating layer disposed under the circuit board, the circuit board being located between the reflective sheet and the insulating layer.
在本發明的一實施例中,上述的導光板具有多數條溝槽,將導光板劃分成多個發光區域。 In an embodiment of the invention, the light guide plate has a plurality of grooves, and the light guide plate is divided into a plurality of light-emitting regions.
在本發明的一實施例中,上述的導光板的側面設置有一微結構。 In an embodiment of the invention, the side surface of the light guide plate is provided with a microstructure.
本發明又提出一種液晶顯示裝置,包括:上述的背光模組以及液晶面板。此液晶面板設置於背光模組的一側。 The present invention further provides a liquid crystal display device comprising: the above backlight module and a liquid crystal panel. The liquid crystal panel is disposed on one side of the backlight module.
本發明採用支撐固定元件,不但能良好地固定導光板及其下方的膜片,而且還能使導光板與導光板上方的光學膜片之間具有適當的混光距離,以提供均勻的面光源。另外,還可利用背框的彎折元件搭配支撐固定元件,而進一步地固定導光板及其下方的膜片。 The invention adopts a supporting fixing component, which not only can well fix the light guide plate and the diaphragm below it, but also has an appropriate light mixing distance between the light guide plate and the optical film above the light guide plate to provide a uniform surface light source. . In addition, the bending member of the back frame can be used together with the supporting fixing member to further fix the light guide plate and the diaphragm therebelow.
為讓本發明之上述特徵和優點能更明顯易懂,下文特舉實施例,並配合所附圖式作詳細說明如下。 The above described features and advantages of the present invention will be more apparent from the following description.
圖1A為本發明第一實施例的背光模組的部分元件的 立體爆炸圖。請參照圖1A,背光模組100包括:導光板110、多數個發光元件120、背框130與支撐固定元件140。導光板110至少具有一貫孔110A。發光元件120設置於導光板110的側面。背框130至少具有位置對應於貫孔110A的一破孔132A,導光板110與發光元件120設置於背框130內。支撐固定元件140具有一主體142、一扣合部144與一按壓部146,扣合部144連接於主體142的一端,按壓部146連接於主體142的一側,其中,扣合部144與部分主體142穿過導光板110的貫孔110A與背框130的破孔132A,扣合部144扣合於背框130,按壓部146按壓導光板110。 1A is a partial diagram of a component of a backlight module according to a first embodiment of the present invention; Three-dimensional explosion map. Referring to FIG. 1A , the backlight module 100 includes a light guide plate 110 , a plurality of light emitting elements 120 , a back frame 130 and a supporting fixing component 140 . The light guide plate 110 has at least a uniform hole 110A. The light emitting element 120 is disposed on a side surface of the light guide plate 110. The back frame 130 has at least one hole 132A corresponding to the through hole 110A, and the light guide plate 110 and the light emitting element 120 are disposed in the back frame 130. The support fixing component 140 has a main body 142, a fastening portion 144 and a pressing portion 146. The fastening portion 144 is connected to one end of the main body 142. The pressing portion 146 is connected to one side of the main body 142. The fastening portion 144 and the portion The main body 142 passes through the through hole 110A of the light guide plate 110 and the broken hole 132A of the back frame 130 , and the fastening portion 144 is fastened to the back frame 130 , and the pressing portion 146 presses the light guide plate 110 .
如圖1A所示的支撐固定元件140為局部的剖面圖,顯示出主體142、扣合部144與按壓部146之間的連接關係。可注意到,此處以按壓部146的數量為一個來舉例說明,然而,按壓部146的數量可至少為一個,並可根據設計需要來調整按壓部146的數量與設置位置。 The support fixing member 140 shown in FIG. 1A is a partial cross-sectional view showing the connection relationship between the main body 142, the engaging portion 144, and the pressing portion 146. It may be noted that the number of the pressing portions 146 is exemplified herein. However, the number of the pressing portions 146 may be at least one, and the number and the set positions of the pressing portions 146 may be adjusted according to design requirements.
例如,圖1B為第一實施例另一種的背光模組的部分元件的立體爆炸圖。請參照圖1B,元件標號與圖1A相同,值得注意的是,按壓部146的數量為兩個,且兩個按壓部146連接於主體142的兩側。兩個按壓部146可更佳地按壓導光板110。當然,按壓部146可以是任意的適當數量。以下,以圖1B的支撐固定元件140為例來進行說明。 For example, FIG. 1B is a perspective exploded view of some components of a backlight module of another embodiment of the first embodiment. Referring to FIG. 1B, the component numbers are the same as those of FIG. 1A. It is noted that the number of the pressing portions 146 is two, and the two pressing portions 146 are connected to both sides of the main body 142. The two pressing portions 146 can more preferably press the light guide plate 110. Of course, the pressing portion 146 can be any suitable number. Hereinafter, the support fixing member 140 of FIG. 1B will be described as an example.
在本實施例中,導光板110例如為單一板材,且具有多數個貫孔110A。貫孔110A的位置對應於破孔132A的 位置。利用支撐固定元件140穿過貫孔110A與破孔132A,即可容易地結合導光板110與背框130。另外,支撐固定元件140的主體142還可承載其上方的光學膜片(繪示於圖2)。 In the embodiment, the light guide plate 110 is, for example, a single plate and has a plurality of through holes 110A. The position of the through hole 110A corresponds to the broken hole 132A position. The light guide plate 110 and the back frame 130 can be easily combined by the support fixing member 140 passing through the through hole 110A and the broken hole 132A. Additionally, the body 142 supporting the fixation element 140 can also carry an optical film (shown in Figure 2) above it.
圖2為圖1B的背光模組的剖面示意圖。請共同參照圖1B與圖2,在背光模組100中,於導光板110的下方還可以設置光學膜片與電路板等,亦即,背光模組100可包括反射片150、電路板160與絕緣層170;並且,於導光板110的上方還可設置光學板組合180,抵接於主體142。光學板組合180可以是擴散片182、稜鏡片184、增亮片186與保護片188等光學膜片的任意組合。 2 is a cross-sectional view of the backlight module of FIG. 1B. Referring to FIG. 1B and FIG. 2 together, in the backlight module 100, an optical film, a circuit board, and the like may be disposed under the light guide plate 110, that is, the backlight module 100 may include a reflective sheet 150, a circuit board 160, and The insulating layer 170; and an optical plate assembly 180 may be disposed above the light guide plate 110 to abut the main body 142. The optical plate assembly 180 can be any combination of the diffusion sheet 182, the gusset 184, the optical sheet such as the brightness enhancing sheet 186 and the protective sheet 188.
請繼續參照圖2,反射片150設置於導光板110的下方,能夠將發光元件120發射出的光線向上方反射;電路板160設置於反射片150的下方,發光元件120電性連接於電路板160,反射片150位於電路板160與導光板110之間,電路板160可控制發光元件120點亮或熄滅;絕緣層170設置於電路板160的下方,電路板160位於反射片150與絕緣層170之間,絕緣層170可防止外界的導電元件(未繪示)對電路板160進行放電。 2, the reflective sheet 150 is disposed under the light guide plate 110, and the light emitted from the light emitting element 120 can be reflected upward; the circuit board 160 is disposed under the reflective sheet 150, and the light emitting element 120 is electrically connected to the circuit board. The reflective sheet 150 is disposed between the circuit board 160 and the light guide plate 110. The circuit board 160 controls the light emitting element 120 to be turned on or off. The insulating layer 170 is disposed under the circuit board 160. The circuit board 160 is disposed on the reflective sheet 150 and the insulating layer. Between 170, the insulating layer 170 prevents external conductive elements (not shown) from discharging the circuit board 160.
類似地,在反射片150、電路板160與絕緣層170上之對應貫孔110A與破孔130A的位置,可分別設置貫孔150A、160A與170A,以使支撐固定元件140也可穿過反射片150、電路板160與絕緣層170。 Similarly, in the position of the corresponding through hole 110A and the hole 130A on the reflective sheet 150, the circuit board 160 and the insulating layer 170, the through holes 150A, 160A and 170A may be respectively disposed so that the supporting fixing member 140 can also pass through the reflection. Sheet 150, circuit board 160 and insulating layer 170.
特別是,由於主體142具有適當的高度,而可在導光 板110和光學板組合180之間造成一空氣間隙AP。藉此,使從導光板110出射的光線具有適當的混光距離,以混光成更加均勻的面光源。 In particular, since the body 142 has an appropriate height, it can be guided An air gap AP is created between the plate 110 and the optical plate assembly 180. Thereby, the light emitted from the light guide plate 110 has an appropriate light mixing distance to be mixed into a more uniform surface light source.
承上述,利用支撐固定元件140不但能達到固定導光板110及其下方的膜片(反射片150、電路板160與絕緣層170)、確保導光板110及其下方的膜片成為平整,並且,還能夠利用支撐固定元件140的主體142來支撐光學板組合180,造成空氣間隙AP以提供適當混光距離。如此一來,背光模組100能提供相當均勻的面光源。 According to the above, the support fixing member 140 can not only fix the light guide plate 110 and the diaphragm below it (the reflection sheet 150, the circuit board 160 and the insulating layer 170), but also ensure that the light guide plate 110 and the diaphragm below it are flattened, and It is also possible to support the optical plate assembly 180 with the body 142 that supports the fixation element 140, creating an air gap AP to provide a suitable light mixing distance. In this way, the backlight module 100 can provide a relatively uniform surface light source.
圖3為本發明第二實施例的背光模組的示意圖。參照圖3可知,圖3的背光模組102類似於圖1B的背光模組100,然而可注意到,有以下兩個不同點:第一個不同點:圖1B的背光模組100使用單一板材的導光板110,而圖3的背光模組102的導光板110’為拼接導光板;第二個不同點:圖1B的背光模組100的背框130僅具有破孔132A,而圖3的背光模組102的背框130還具有彎折元件134。 FIG. 3 is a schematic diagram of a backlight module according to a second embodiment of the present invention. Referring to FIG. 3, the backlight module 102 of FIG. 3 is similar to the backlight module 100 of FIG. 1B. However, it can be noted that there are two differences: the first difference: the backlight module 100 of FIG. 1B uses a single plate. The light guide plate 110 of the backlight module 102 of FIG. 3 is a splicing light guide plate; the second difference is that the back frame 130 of the backlight module 100 of FIG. 1B has only the broken hole 132A, and FIG. 3 The back frame 130 of the backlight module 102 also has a bending element 134.
就第一個不同點詳細而言,導光板110’為由多數個子導光板110a所拼接而成的拼接導光板,每一子導光板110a的至少一角落設有一凹陷G,且由多個子導光板110a的凹陷G拼接成多數個貫孔110A。這些拼接而成的貫孔110A可讓支撐固定元件140通過,以使支撐固定元件140能夠將拼接而成的導光板110’固定在背框130上。 For the first difference, the light guide plate 110' is a spliced light guide plate which is formed by splicing a plurality of sub-light guide plates 110a. At least one corner of each sub-light guide plate 110a is provided with a recess G and is composed of a plurality of sub-guides. The recesses G of the light plate 110a are spliced into a plurality of through holes 110A. These spliced through holes 110A allow the support fixing member 140 to pass therethrough, so that the support fixing member 140 can fix the spliced light guide plate 110' to the back frame 130.
就第二個不同點詳細而言,在背光模組102中,背框130可包括:背板132與彎折元件134,背板132具有破孔132A,彎折元件134鄰近於破孔130A且與背板132形成一角度θ,彎折元件134具有一卡合槽134A,導光板110’抵接於卡合槽134A,且兩個按壓部146壓抵導光板110’。也就是說,可進一步利用背框130的彎折元件134、配合支撐固定元件140來將導光板110’更良好地固定於背框130中。 For the second difference, in detail, in the backlight module 102, the back frame 130 may include a back plate 132 and a bending element 134 having a hole 132A, and the bending element 134 is adjacent to the hole 130A and An angle θ is formed with the back plate 132. The bending element 134 has an engaging groove 134A. The light guiding plate 110 ′ abuts against the engaging groove 134A , and the two pressing portions 146 are pressed against the light guiding plate 110 ′. That is, the light guiding plate 110' can be further better fixed in the back frame 130 by the bending member 134 of the back frame 130 and the supporting support fixing member 140.
彎折元件134例如是利用對於背板132進行沖壓、再進行彎折而得。如圖3所示,在背板132的數個預定位置可製作彎折元件134,用來固定導光板110’的多個位置。後續的圖9與圖10會再進一步說明彎折元件134、支撐固定元件140與導光板110’的結合狀態。 The bending element 134 is obtained, for example, by punching and then bending the backing plate 132. As shown in Fig. 3, a bending member 134 can be formed at a plurality of predetermined positions of the backing plate 132 for fixing a plurality of positions of the light guiding plate 110'. Subsequent Figures 9 and 10 will further illustrate the bonding state of the bending member 134, the supporting fixing member 140, and the light guide plate 110'.
圖4為本發明第二實施例的子導光板的立體示意圖。圖5為圖4的區域A的放大示意圖。圖6為圖4的區域B的放大示意圖。圖7為圖4的區域C的放大示意圖。 4 is a perspective view of a sub-light guide plate according to a second embodiment of the present invention. FIG. 5 is an enlarged schematic view of a region A of FIG. 4. FIG. 6 is an enlarged schematic view of a region B of FIG. 4. FIG. 7 is an enlarged schematic view of a region C of FIG. 4.
請參照圖4,每一子導光板110a可具有相對向的入光部112與拼接部114,彼此相鄰的入光部112與拼接部114可彼此結合而形成拼接的導光板110’(繪示於圖3、圖8中)。入光部112與拼接部114形成為相互配合的階梯狀。結合後的入光部112的上表面與拼接部114的上表面實質上是處於同一水平面,且結合後的入光部112的下表面與拼接部114的下表面實質上是處於同一水平面。如此,可使反射片150、電路板160、絕緣層170等平整地設置在拼 接而成的導光板110’的下方。 Referring to FIG. 4, each of the sub-light guide plates 110a may have opposite light-incident portions 112 and splice portions 114. The light-injecting portions 112 and the splice portions 114 adjacent to each other may be combined with each other to form a spliced light guide plate 110'. Shown in Figure 3 and Figure 8). The light incident portion 112 and the joint portion 114 are formed in a stepped shape that cooperates with each other. The upper surface of the combined light incident portion 112 and the upper surface of the joint portion 114 are substantially at the same horizontal plane, and the lower surface of the combined light incident portion 112 and the lower surface of the joint portion 114 are substantially at the same horizontal plane. In this way, the reflective sheet 150, the circuit board 160, the insulating layer 170, and the like can be placed flat in the spelling. Below the light guide plate 110'.
請參照圖3的彎折元件34,圖4的子導光板110a以及圖5的凸耳P,可知道,導光板110’(子導光板110a)的拼接部114的側面至少可具有一凸耳P,且凸耳P可抵接於卡合槽134A。在圖4的區域A’中(區域A的對應位置)也可製作另一凸耳P。將凸耳P抵接於彎折元件134的卡合槽134A中。另外,從圖4與圖5可清楚看到,凹陷G形成在子導光板110a的至少一角落,且在區域A、A’中可以都形成有凹陷G。當拼接多個子導光板110a時,不同子導光板110a的凹陷G即可相互拼接成貫孔110A,用於使支撐固定元件140穿過。 Referring to the bending element 34 of FIG. 3, the sub-light guide plate 110a of FIG. 4 and the lug P of FIG. 5, it can be known that the side surface of the joint portion 114 of the light guide plate 110' (sub-light guide plate 110a) can have at least one lug. P, and the lug P can abut against the engaging groove 134A. Another lug P can also be made in the area A' of Fig. 4 (the corresponding position of the area A). The lug P is abutted in the engaging groove 134A of the bending element 134. Further, as is clear from Figs. 4 and 5, the recesses G are formed at at least one corner of the sub-light guide plate 110a, and recesses G may be formed in the regions A, A'. When the plurality of sub-light guide plates 110a are spliced, the recesses G of the different sub-light guide plates 110a can be spliced into the through holes 110A for passing the support fixing member 140.
請再參照圖4與圖6,導光板110’(子導光板110a)可具有多數條溝槽S,將導光板110’(子導光板110a)劃分成多個發光區域R。溝槽S可以使不同發光區域R的光線彼此隔離,可形成各區同時或不同時發光的效果。溝槽S可利用將導光板110’射出成型的同時進行製作,或是利用挖槽工具(未繪示)進行製作。 Referring to FIG. 4 and FIG. 6, the light guide plate 110' (sub-light guide plate 110a) may have a plurality of grooves S, and the light guide plate 110' (sub-light guide plate 110a) is divided into a plurality of light-emitting regions R. The grooves S can separate the light rays of the different light-emitting regions R from each other, and can form an effect of emitting light at the same time or at different times. The groove S can be produced by injection molding the light guide plate 110' or by using a grooving tool (not shown).
請再參照圖4與圖7,導光板110’(子導光板110a)的入光部112的側面可設置有一微結構MS。此微結構MS可以是多個微細溝槽。利用微結構MS可促使來自於設置在入光部112側面的發光元件120的光線進入導光板110’中,以提高光線利用效率。 Referring to FIG. 4 and FIG. 7, the side surface of the light incident portion 112 of the light guide plate 110' (the sub-light guide plate 110a) may be provided with a microstructure MS. This microstructure MS can be a plurality of fine trenches. The light from the light-emitting element 120 disposed on the side of the light incident portion 112 can be caused to enter the light guide plate 110' by the microstructure MS to improve light utilization efficiency.
圖8為圖3的拼接的導光板的立體示意圖。請參照圖8,每一子導光板110a具有相對向的一入光部112與一拼 接部114,彼此相鄰的入光部112與拼接部114彼此結合而形成拼接的導光板110’。在入光部112與拼接部114的結合處形成一容置空間CS,發光元件120設置於容置空間CS中、且位於入光部112的側面。另外,從圖8中可更清楚地看到子導光板110a拼接的方式、及拼接而成的貫孔110A。 FIG. 8 is a perspective view of the spliced light guide plate of FIG. 3. FIG. Referring to FIG. 8, each sub-light guide plate 110a has a light incident portion 112 and a counter. The joint portion 114, the light incident portion 112 and the joint portion 114 adjacent to each other are joined to each other to form a spliced light guide plate 110'. An accommodating space CS is formed at a junction of the light incident portion 112 and the splicing portion 114. The light emitting element 120 is disposed in the accommodating space CS and located on a side surface of the light incident portion 112. Further, the manner in which the sub-light guide plates 110a are spliced and the spliced through holes 110A can be more clearly seen from FIG.
圖9為本發明第二實施例的背光模組的立體示意圖。圖10為本發明第二實施例的背光模組的剖面示意圖。請參照圖9與圖10,子導光板110a的入光部112與另一子導光板110a的拼接部114拼接在一起。特別是,凸耳P與入光部112可同時卡合於彎折元件134的卡合槽134A(可同時參照圖3)中。由此,利用彎折元件134對於導光板110’進行了第一道的固定動作。 FIG. 9 is a perspective view of a backlight module according to a second embodiment of the present invention. FIG. 10 is a cross-sectional view showing a backlight module according to a second embodiment of the present invention. Referring to FIG. 9 and FIG. 10, the light incident portion 112 of the sub-light guide plate 110a is spliced with the joint portion 114 of the other sub-light guide plate 110a. In particular, the lug P and the light incident portion 112 can be simultaneously engaged in the engaging groove 134A of the bending member 134 (refer to FIG. 3 at the same time). Thereby, the first operation of the light guide plate 110' is performed by the bending element 134.
可從圖3看到,破孔132A存在於彎折元件134的兩側且約形成”凹字狀”。如圖9與圖10所示,由背光模組102的上方往下,支撐固定元件140的部分主體142可依序穿過:導光板110’的貫孔110A、反射片150的貫孔150A、電路板160的貫孔160A、絕緣層170的貫孔170A以及位於彎折元件134右方的破孔132A。之後,利用扣合部144將導光板110’及其下方的膜片(反射片150、電路板160、絕緣層170等)固定於背框130上,且利用主體142兩側的按壓部146來按壓導光板110’、彎折元件134及其下方的膜片(反射片150、電路板160、絕緣層170等)。也就是說,利用支撐固定元件140還可進行第二道 的固定動作。 As can be seen from Figure 3, the holes 132A are present on both sides of the bending element 134 and form a "concave shape". As shown in FIG. 9 and FIG. 10, a portion of the main body 142 supporting the fixing member 140 can be sequentially passed through the through hole 110A of the light guide plate 110', the through hole 150A of the reflection sheet 150, and the lower portion of the backlight module 102. The through hole 160A of the circuit board 160, the through hole 170A of the insulating layer 170, and the through hole 132A located to the right of the bending element 134. Thereafter, the light guide plate 110 ′ and the diaphragm (the reflection sheet 150 , the circuit board 160 , the insulating layer 170 , and the like) under the light guide plate 110 ′ are fixed to the back frame 130 by the fastening portion 144 , and the pressing portions 146 on both sides of the main body 142 are used. The light guide plate 110', the bending element 134, and a diaphragm thereunder (reflecting sheet 150, circuit board 160, insulating layer 170, etc.) are pressed. That is to say, the second support can also be performed by the support fixing member 140. Fixed action.
另外,由於主體142具有適當的高度,而可在導光板110和光學板組合180之間造成一空氣間隙AP。藉此,使從導光板110出射的光線具有適當的混光距離,以混光成更加均勻的面光源。 In addition, since the body 142 has an appropriate height, an air gap AP can be created between the light guide plate 110 and the optical plate assembly 180. Thereby, the light emitted from the light guide plate 110 has an appropriate light mixing distance to be mixed into a more uniform surface light source.
本發明的背光模組的結構並不限於上述第一實施例的背光模組100與第二實施例的背光模組102。更詳細而言,背光模組100是利用單一板材的導光板110與不具有彎折元件134的背框130組合而成;而背光模組102是利用拼接的導光板110’與具有彎折元件134的背框130組合而成。然而,還可以採用單一板材的導光板110與具有彎折元件134的背框130之組合,或是,拼接的導光板110’與不具有彎折元件134的背框130之組合。這些組合都包含於本發明的創作精神之內。 The structure of the backlight module of the present invention is not limited to the backlight module 100 of the first embodiment and the backlight module 102 of the second embodiment. In more detail, the backlight module 100 is formed by combining the light guide plate 110 of a single plate with the back frame 130 having no bending element 134; and the backlight module 102 is formed by using the spliced light guide plate 110' and the bending element. The back frame 130 of the 134 is combined. However, it is also possible to use a combination of a single sheet of light guide plate 110 and a back frame 130 having a bending element 134, or a combination of a spliced light guide plate 110' and a back frame 130 having no bending element 134. These combinations are all included in the inventive spirit of the present invention.
圖11為本發明實施例的一種液晶顯示裝置的示意圖。此液晶顯示裝置200可包括:背光模組210以及液晶面板220。此液晶面板220設置於背光模組210的一側。背光模組210可以採用上述任何一種背光模組。此液晶顯示裝置200能夠提供具有良好品質的影像。 FIG. 11 is a schematic diagram of a liquid crystal display device according to an embodiment of the present invention. The liquid crystal display device 200 can include a backlight module 210 and a liquid crystal panel 220. The liquid crystal panel 220 is disposed on one side of the backlight module 210. The backlight module 210 can adopt any of the above backlight modules. This liquid crystal display device 200 is capable of providing an image of good quality.
綜上所述,本發明的背光模組以及液晶顯示裝置至少具有以下優點:採用支撐固定元件,不但能良好地固定導光板及其下 方的膜片,而且還能使導光板與導光板上方的光學膜片之間具有適當的混光距離,以提供均勻的面光源。另外,還可利用背框的彎折元件搭配支撐固定元件,而進一步地固定導光板及其下方的膜片。具有上述背光模組的液晶顯示裝置能夠提供具有良好品質的影像。 In summary, the backlight module and the liquid crystal display device of the present invention have at least the following advantages: by using a supporting fixing member, not only can the light guide plate be well fixed and the lower portion thereof The square diaphragm also has an appropriate mixing distance between the light guide plate and the optical film above the light guide plate to provide a uniform surface light source. In addition, the bending member of the back frame can be used together with the supporting fixing member to further fix the light guide plate and the diaphragm therebelow. A liquid crystal display device having the above backlight module can provide an image of good quality.
雖然本發明已以實施例揭露如上,然其並非用以限定本發明,任何所屬技術領域中具有通常知識者,在不脫離本發明之精神和範圍內,當可作些許之更動與潤飾,故本發明之保護範圍當視後附之申請專利範圍所界定者為準。 Although the present invention has been disclosed in the above embodiments, it is not intended to limit the invention, and any one of ordinary skill in the art can make some modifications and refinements without departing from the spirit and scope of the invention. The scope of the invention is defined by the scope of the appended claims.
100、102、210‧‧‧背光模組 100, 102, 210‧‧‧ backlight module
110、110’‧‧‧導光板 110,110’‧‧‧Light guide plate
110a‧‧‧子導光板 110a‧‧‧Sub-light guide
110A、150A、160A、170A‧‧‧貫孔 110A, 150A, 160A, 170A‧‧‧through holes
112‧‧‧入光部 112‧‧‧Into the Department of Light
114‧‧‧拼接部 114‧‧‧Splicing Department
120‧‧‧發光元件 120‧‧‧Lighting elements
130‧‧‧背框 130‧‧‧ Back frame
132‧‧‧背板 132‧‧‧ Backplane
132A‧‧‧破孔 132A‧‧‧ hole
134‧‧‧彎折元件 134‧‧‧Bending components
134A‧‧‧卡合槽 134A‧‧‧ snap groove
140‧‧‧支撐固定元件 140‧‧‧Supporting components
142‧‧‧主體 142‧‧‧ Subject
144‧‧‧扣合部 144‧‧‧Withholding department
146‧‧‧按壓部 146‧‧‧ Pressing Department
150‧‧‧反射片 150‧‧‧reflector
160‧‧‧電路板 160‧‧‧ boards
170‧‧‧絕緣層 170‧‧‧Insulation
180‧‧‧光學板組合 180‧‧‧ Optical plate combination
182‧‧‧擴散片 182‧‧‧Diffuser
184‧‧‧稜鏡片 184‧‧‧ Picture
186‧‧‧增亮片 186‧‧‧Bright sequins
188‧‧‧保護片 188‧‧‧protection film
200‧‧‧液晶顯示裝置 200‧‧‧Liquid crystal display device
220‧‧‧液晶面板 220‧‧‧LCD panel
AP‧‧‧空氣間隙 AP‧‧‧Air gap
CS‧‧‧容置空間 CS‧‧‧ accommodating space
G‧‧‧凹陷 G‧‧‧ Sag
P‧‧‧凸耳 P‧‧‧ 耳耳
S‧‧‧溝槽 S‧‧‧ trench
MS‧‧‧微結構 MS‧‧‧Microstructure
圖1A為本發明第一實施例的背光模組的部分元件的立體爆炸圖。 1A is a perspective exploded view of some components of a backlight module according to a first embodiment of the present invention.
圖1B為本發明第一實施例另一種的背光模組的部分元件的立體爆炸圖。 1B is a perspective exploded view of some components of a backlight module according to another embodiment of the present invention.
圖2為圖1B的背光模組的剖面示意圖。 2 is a cross-sectional view of the backlight module of FIG. 1B.
圖3為本發明第二實施例的背光模組的示意圖。 FIG. 3 is a schematic diagram of a backlight module according to a second embodiment of the present invention.
圖4為本發明第二實施例的子導光板的立體示意圖。 4 is a perspective view of a sub-light guide plate according to a second embodiment of the present invention.
圖5為圖4的區域A的放大示意圖。 FIG. 5 is an enlarged schematic view of a region A of FIG. 4.
圖6為圖4的區域B的放大示意圖。 FIG. 6 is an enlarged schematic view of a region B of FIG. 4.
圖7為圖4的區域C的放大示意圖。 FIG. 7 is an enlarged schematic view of a region C of FIG. 4.
圖8為圖3的拼接的導光板的立體示意圖。 FIG. 8 is a perspective view of the spliced light guide plate of FIG. 3. FIG.
圖9為本發明第二實施例的背光模組的立體示意圖。 FIG. 9 is a perspective view of a backlight module according to a second embodiment of the present invention.
圖10為本發明第二實施例的背光模組的剖面示意圖。 FIG. 10 is a cross-sectional view showing a backlight module according to a second embodiment of the present invention.
圖11為本發明實施例的一種液晶顯示裝置的示意圖。 FIG. 11 is a schematic diagram of a liquid crystal display device according to an embodiment of the present invention.
100‧‧‧背光模組 100‧‧‧Backlight module
110‧‧‧導光板 110‧‧‧Light guide plate
110A‧‧‧貫孔 110A‧‧‧through hole
120‧‧‧發光元件 120‧‧‧Lighting elements
130‧‧‧背框 130‧‧‧ Back frame
132A‧‧‧破孔 132A‧‧‧ hole
140‧‧‧支撐固定元件 140‧‧‧Supporting components
142‧‧‧主體 142‧‧‧ Subject
144‧‧‧扣合部 144‧‧‧Withholding department
146‧‧‧按壓部 146‧‧‧ Pressing Department
Claims (9)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
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TW99120276A TWI408462B (en) | 2010-06-22 | 2010-06-22 | Backlight module and liquid crystal display |
US13/155,409 US20110299298A1 (en) | 2010-06-08 | 2011-06-08 | Backlight module |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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TW99120276A TWI408462B (en) | 2010-06-22 | 2010-06-22 | Backlight module and liquid crystal display |
Publications (2)
Publication Number | Publication Date |
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TW201200945A TW201200945A (en) | 2012-01-01 |
TWI408462B true TWI408462B (en) | 2013-09-11 |
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Application Number | Title | Priority Date | Filing Date |
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TW99120276A TWI408462B (en) | 2010-06-08 | 2010-06-22 | Backlight module and liquid crystal display |
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TW (1) | TWI408462B (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
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TWI569074B (en) * | 2015-01-07 | 2017-02-01 | Backlight module frame device and backlight module |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI224702B (en) * | 1999-08-03 | 2004-12-01 | Samsung Electronics Co Ltd | Liquid crystal display |
TW200821682A (en) * | 2006-11-02 | 2008-05-16 | Au Optronics Corp | Supporting structure and backlight module using the same |
TW200827774A (en) * | 2006-12-22 | 2008-07-01 | Hon Hai Prec Ind Co Ltd | Light guide plate and backlight module |
US20080204623A1 (en) * | 2007-02-28 | 2008-08-28 | Funai Electric Co., Ltd. | Liquid crystal display device |
EP2172699A1 (en) * | 2007-10-03 | 2010-04-07 | Sharp Kabushiki Kaisha | Illuminating device and liquid crystal display device |
TWI323814B (en) * | 2005-12-16 | 2010-04-21 | Hon Hai Prec Ind Co Ltd | Direct type backlight module |
-
2010
- 2010-06-22 TW TW99120276A patent/TWI408462B/en not_active IP Right Cessation
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI224702B (en) * | 1999-08-03 | 2004-12-01 | Samsung Electronics Co Ltd | Liquid crystal display |
TWI323814B (en) * | 2005-12-16 | 2010-04-21 | Hon Hai Prec Ind Co Ltd | Direct type backlight module |
TW200821682A (en) * | 2006-11-02 | 2008-05-16 | Au Optronics Corp | Supporting structure and backlight module using the same |
TW200827774A (en) * | 2006-12-22 | 2008-07-01 | Hon Hai Prec Ind Co Ltd | Light guide plate and backlight module |
US20080204623A1 (en) * | 2007-02-28 | 2008-08-28 | Funai Electric Co., Ltd. | Liquid crystal display device |
EP2172699A1 (en) * | 2007-10-03 | 2010-04-07 | Sharp Kabushiki Kaisha | Illuminating device and liquid crystal display device |
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TW201200945A (en) | 2012-01-01 |
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