201211634 六、發明說明： 【發明所屬之技術領域】 本發明關於一種面光源裝置’且特別是有關於一種具有導 光板的面光源裝置及使用其之顯示器。 ' 【先前技術】 背光模組應用於液晶顯示裝置中，以提供液晶顯示面板所 需之顯示光源。背光模組可分為直下式背光模組及侧邊入光式 背光模組，其中有關於侧邊入光式背光模組的技術已揭露於多 _ 篇專利中，如中華民國專利編號1315015、M270369、 M303389 、 200809318 、 200727040 、 200815870 、 200813592 以及美國專利編號 7545461、20070029915、20050253980、 20090256987 等專利。 圖1是習知一種側邊入光式的背光模組的示意圖。請參照 圖1，習知側邊入光式的背光模組iOO包括一導光板n〇與一 光源組120。導光板110具有相鄰的一入光面I〗〕與一出光面 114 ’而光源組120配置於入光面112旁。此外，光源組120 φ 包括電路板122以及配置於電路板122上的多個發光二極體 (light emitting diode，LED) 124。這些發光二極體 124 適於提 供光線至導光板110 ’光線從入光面112入射導光板11〇後， 導光板110會將光線轉換成面光源，並使面光源從出光面114 出射。此面光源即可作為液晶顯示面板所需之顯示光源。 習知技術中’由於發光二極體124發光時會產生熱能，導 致導光板110受熱膨脹。為了防止導光板110受熱膨脹後擠壓 到發光二極體124造成發光二極體丨24受損，導光板110與發 光二極體124之間必須預留充足的間距g。然而，此將導致背 201211634 光模組100的光利用效率降低。 【發明内容】 本發明提供一種面光源裝置，以提升光利用效率。 本發明另提供一種顯示器，以提升光利用效率。 /本發明的其他目的和優點可以從本發明所揭 徵中得到進一步的了解。 技嘁 為達上述至少一個目的或是其他目的，本發明 提出-種面光源裝置，包括-導光板、— 貫施例 ,。導光板具有—入光面，光源組包括_基板與配置二::呆護 夕個點光源，每—點光源的-出光面與入光面相對板的 置於基板，並圍繞至少部分點光源。保護枢之* 蔓框配 ==板之間的距離大於每一點光源的出光面與基二 板。在本判之-實施射，上述之保魅㈣面接觸導光 在本發明之一實施例中，上述之面光 框’其中每一保護框圍繞點光源其中之一:、二：夕個保護 於點光源的數量。 且侏蠖框的數量等 在本發明之一實施例中，上述之面 框，其中每一保護框圍繞點光源其中之一’，、:ι ’個保護 於點光源的數量。 且保護框的數量小 在本發明之—實施例中，上述之 框’其中每一保護框圍繞點光源之至少其中=包括多個保護 在本發明之一實施例中，上述之保護' ° 質。 扣·的材質包括彈性材 201211634 在本發明之一實施例中，上述之保護框的材質 塑膠。 ^括橡 在本發明之一實施例中，上述之保護框的口徑從 基板接觸的一底面漸縮。 在本發明之一實施例中’上述之保護框之一内表 膠或 面朝與 射面 面為一反 反射層 在本發明之一實施例中，上述之保護框的顏色為白 在本發明之一實施例中’上述之保護框之一内表面气有201211634 VI. Description of the Invention: [Technical Field] The present invention relates to a surface light source device and particularly relates to a surface light source device having a light guide plate and a display using the same. [Prior Art] The backlight module is applied to a liquid crystal display device to provide a display light source required for the liquid crystal display panel. The backlight module can be divided into a direct-lit backlight module and a side-lighting backlight module. Among them, the technology for the side-lighting backlight module has been disclosed in many patents, such as the Republic of China patent number 1315015, Patents such as M270369, M303389, 200809318, 200727040, 200815870, 200813592, and U.S. Patent Nos. 7554661, 20070029915, 20050253980, 20090256987. FIG. 1 is a schematic diagram of a conventional edge-lit backlight module. Referring to FIG. 1, a conventional edge-lit backlight module iOO includes a light guide plate n〇 and a light source group 120. The light guide plate 110 has an adjacent light incident surface I] and a light exit surface 114', and the light source group 120 is disposed beside the light incident surface 112. In addition, the light source group 120 φ includes a circuit board 122 and a plurality of light emitting diodes (LEDs) 124 disposed on the circuit board 122. The light-emitting diodes 124 are adapted to provide light to the light guide plate 110. After the light enters the light guide plate 11 from the light-incident surface 112, the light guide plate 110 converts the light into a surface light source, and the surface light source is emitted from the light-emitting surface 114. This surface light source can be used as a display light source for the liquid crystal display panel. In the prior art, heat is generated when the light-emitting diode 124 emits light, which causes the light guide plate 110 to be thermally expanded. In order to prevent the light guide plate 110 from being thermally expanded and then being pressed to the light emitting diode 124 to damage the light emitting diode 24, a sufficient distance g between the light guide plate 110 and the light emitting diode 124 must be reserved. However, this will result in a decrease in light utilization efficiency of the back-end 201211634 optical module 100. SUMMARY OF THE INVENTION The present invention provides a surface light source device to improve light utilization efficiency. The present invention further provides a display to improve light utilization efficiency. Other objects and advantages of the invention will be apparent from the disclosure of the invention. Techniques For at least one or the other of the above objects, the present invention provides a surface light source device comprising a light guide plate, a solution, and a like. The light guide plate has a light-incident surface, and the light source group comprises a substrate and a second light source, and the light-emitting surface of each light source is disposed on the substrate opposite to the light-incident surface, and surrounds at least part of the light source. . The protection pivot* vine frame == The distance between the plates is greater than the light exit surface of each point source and the base plate. In the present invention, in the embodiment of the present invention, in the embodiment of the present invention, each of the protective frames surrounds one of the point light sources: The number of point sources. And the number of frames, etc. In an embodiment of the present invention, the above-mentioned frame, wherein each of the protection frames surrounds one of the point light sources ',, ι ′ is protected by the number of point light sources. And the number of the protective frames is small. In the embodiment of the present invention, the above-mentioned frame 'each of the protective frames surrounding at least one of the point light sources=including a plurality of protections in an embodiment of the present invention, the above-mentioned protection '° quality . The material of the buckle includes an elastic material. 201211634 In one embodiment of the invention, the material of the protective frame is plastic. In one embodiment of the invention, the diameter of the protective frame is tapered from a bottom surface of the substrate contact. In an embodiment of the present invention, the surface of the protective frame or the surface of the protective frame is a reflective layer. In an embodiment of the present invention, the color of the protective frame is white. In one embodiment, the inner surface of one of the above protective frames has
在本發明之一實施例中，上述之反射層的顏色為白色。 本發明的實施例另提供一種顯示器’其包括_g 穴〇符顒不面板斑 上述之面光源裝置，其中面光源裝置配置於顯示面板之—側二 本發明之實施例的面光源裝置中，由於光源組的基板^設 有保護框以防止導光板受熱膨脹後擠壓到點光源，所以導光板 與點光源之間的間距能盡可能地縮小，以提升光利用效率'。另 外，本發明之實施例的顯示器因使用此面光源裝置，所以具 較高的光利用效率。 八 為讓本發明之上述和其他目的、特徵和優點能更明顯易 懂，下文特舉較佳實施例，並配合所附圖式，作詳細說明如下。 【實施方式】 有關本發明之前述及其他技術内容、特點與功效，在以下配 合參考圖式之一較佳實施例的詳細說明中，將可清楚的呈現。以 y實施例中所提到的方向用語，例如：上、下、左、右、前或後 等，僅是參考附加圖式的方向。因此，使用的方向用語是用來說 明並非用來限制本發明。 201211634 圖2疋本發明-實施例之一種面光源裝置的俯視示意 圖，而圖3是圖2之光源組與保護框的立體示意圖。請參照圖 2與圖3 ’本實施例之面光源|置雇包括—導光板21〇、一 光源組220及至少-保護框23〇(本實施例是以多個保護框23〇 為例）。導光板210具有-入光面212，光源組22〇包括一基 板222與配置於基板222的多個點光源224。這些點光源224 可為發光二極體或其他合適的點光源，而每一點光源224的一 出光面225與導光板210的入光面212相對。保護框23〇配置 於基板222，並圍繞至少部分點光源224。在本實施例中，每 -保護框230例如是圍繞-個點光源224，且保護 23〇的數 罝等於點光源224的數量’即每一點光源224被一個保護框 230所圍繞。此外’保護框23Q之面對入光面212的—頂面 與基板222之間的距離D1大於每一點光源224的出光面225 與基板222之間的距離D2。 在本實施例中，上述之保護框23〇的頂面232接觸到導光 板210，但在其他實施例中，保護框23〇的頂面232亦可與導 光板210的入光面212之間保持一間距。此外，保護框的 材質可選用彈性材質，如橡膠、塑膠等。另外，本實施例之保 護框230例如為矩形框，但保護框23〇亦可為圓形框或橢圓形 框等’本發明並不限定保護框的形狀。 上述之面光源裝置200中’點光源224所提供的光線經由 導光板210的入光面212入射導光板210,而導光板21〇會將 光線轉換成面光源，且面光源是從導光板21〇的一出光面214 出射。由於點光源224發光時會產生熱能，導致導光板21 〇受 熱膨脹’所以本實施例於基板222上設置保護框230，且使保 護框230之頂面232與基板222之間的距離D1大於每一點光 201211634 源224的出光面225與基板222之間的距離D2。當點光源224 產生的熱導致導光板21〇膨脹時，導光板210會推擠到保護框 230而非點光源224。如此，不僅可防止點光源224遭受到導 光板210的推擠而損壞，而且點光源224與導光板210之間的 間距可以盡可能地縮小，以提升光利用效率。 此外’由於保護框230可選用彈性材質，所以保護框230 受到導光板210推擠時會適度變形，使導光板21〇能夠朝接近 點光源224的方向膨脹。如此’可避免導光板21〇因無法朝接 近點光源224的方向膨服’而導致隆起的情形。另外，在本實 鲁施例中’保護框230可選用具有高反射率的材質，以使保護框 230之一内表面234可當作一反射面，進而提升光利用效率。 為了避免光線被保護框230反射後產生顏色改變的情形，保護 框23 0的顏色可與點光源224的發光顏色相配合。舉例來說， 當點光源224為白光點光源時，保護框230的顏色可選用白色。 需注意的是，雖然在本實施例中，保護框230例如是由具 有高反射率的材質製成，但在另一實施例中，亦可直接於保護 框230的内表面234設置一反射層（圖未示），以藉由此反射 • 層來反射光線。此外，反射層的顏色可與點光源224發光顏色 相配合，例如皆為白色。 於本發明中，並不限定一個保護框23〇僅圍繞一個點光源 224，亦即保護框230可圍繞上述這些點光源224至少其中之 一。請參考圖4、圖5和圖0。圖4及圖5分別為本發明另一實 施例之光源組與保護框的立體示意圖，圖6為本發明另一實施 例之保護框的立體示意圖。如圖4所示，每一保護框230可圍 繞兩個點光源224。此外，本發明亦不限定每一點光源224皆 須被保濩框230圍繞。舉例來說，如圖5所示，每一保護框In an embodiment of the invention, the reflective layer has a white color. The embodiment of the present invention further provides a display device comprising: the surface light source device comprising the above-mentioned surface light source device, wherein the surface light source device is disposed in the surface light source device of the embodiment of the present invention. Since the substrate of the light source group is provided with a protective frame to prevent the light guide plate from being thermally expanded and then pressed to the point light source, the distance between the light guide plate and the point light source can be reduced as much as possible to improve the light utilization efficiency. Further, since the display of the embodiment of the present invention uses this surface light source device, it has high light use efficiency. The above and other objects, features, and advantages of the present invention will become more apparent and understood by the appended claims appended claims The above and other technical contents, features, and advantages of the present invention will be apparent from the following detailed description of the preferred embodiments. The directional terms mentioned in the y embodiment, for example, up, down, left, right, front or back, etc., are only directions referring to the additional drawings. Therefore, the directional terminology used is not intended to limit the invention. 201211634 Fig. 2 is a schematic plan view of a surface light source device of the present invention-embodiment, and Fig. 3 is a perspective view of the light source group and the protective frame of Fig. 2. Referring to FIG. 2 and FIG. 3, the surface light source of the present embodiment includes a light guide plate 21, a light source group 220, and at least a protective frame 23 (this embodiment is a plurality of protective frames 23 〇 as an example). . The light guide plate 210 has a light incident surface 212, and the light source group 22 includes a substrate 222 and a plurality of point light sources 224 disposed on the substrate 222. The point source 224 can be a light emitting diode or other suitable point source, and a light emitting surface 225 of each point source 224 is opposite to the light incident surface 212 of the light guide plate 210. The protective frame 23 is disposed on the substrate 222 and surrounds at least a portion of the point light source 224. In the present embodiment, each protection frame 230 is, for example, surrounded by a point source 224, and the number of protections 23〇 is equal to the number of point sources 224, i.e., each point source 224 is surrounded by a guard frame 230. Further, the distance D1 between the top surface of the protective frame 23Q facing the light incident surface 212 and the substrate 222 is greater than the distance D2 between the light exit surface 225 of each of the point light sources 224 and the substrate 222. In this embodiment, the top surface 232 of the protection frame 23A is in contact with the light guide plate 210. However, in other embodiments, the top surface 232 of the protection frame 23A can also be between the light incident surface 212 of the light guide plate 210. Keep a gap. In addition, the material of the protective frame can be made of elastic materials such as rubber and plastic. Further, the protective frame 230 of the present embodiment is, for example, a rectangular frame, but the protective frame 23A may be a circular frame or an elliptical frame. The present invention does not limit the shape of the protective frame. In the above-mentioned surface light source device 200, the light provided by the point light source 224 is incident on the light guide plate 210 via the light incident surface 212 of the light guide plate 210, and the light guide plate 21 turns the light into a surface light source, and the surface light source is from the light guide plate 21. A light-emitting surface 214 of the cockroach exits. Since the point light source 224 generates heat energy, the light guide plate 21 is thermally expanded. Therefore, the protection frame 230 is disposed on the substrate 222 in the embodiment, and the distance D1 between the top surface 232 of the protection frame 230 and the substrate 222 is greater than A little light 201211634 The distance D2 between the light exit surface 225 of the source 224 and the substrate 222. When the heat generated by the point source 224 causes the light guide plate 21 to expand, the light guide plate 210 is pushed to the protective frame 230 instead of the point source 224. Thus, not only the point light source 224 is prevented from being damaged by the pushing of the light guide plate 210, but also the distance between the point light source 224 and the light guide plate 210 can be reduced as much as possible to improve light utilization efficiency. In addition, since the protective frame 230 can be made of an elastic material, the protective frame 230 is appropriately deformed when pushed by the light guide plate 210, so that the light guide plate 21 can be expanded toward the point light source 224. Thus, it is possible to prevent the light guide plate 21 from being swollen by being unable to be swung in the direction of the near point light source 224. In addition, in the present embodiment, the protective frame 230 may be made of a material having high reflectivity, so that the inner surface 234 of the protective frame 230 can be regarded as a reflecting surface, thereby improving light utilization efficiency. In order to avoid a situation in which the light is reflected by the protective frame 230 to cause a color change, the color of the protective frame 306 may be matched with the illuminating color of the point source 224. For example, when the point source 224 is a white point source, the color of the protection frame 230 can be white. It should be noted that, in the embodiment, the protective frame 230 is made of a material having high reflectivity, for example, in another embodiment, a reflective layer may be disposed directly on the inner surface 234 of the protective frame 230. (not shown) to reflect light by means of this reflective layer. In addition, the color of the reflective layer can be matched to the color of the point source 224, such as white. In the present invention, a protective frame 23 is not limited to surround only one point light source 224, that is, the protective frame 230 can surround at least one of the point light sources 224 described above. Please refer to Figure 4, Figure 5 and Figure 0. 4 and FIG. 5 are respectively perspective views of a light source group and a protective frame according to another embodiment of the present invention, and FIG. 6 is a perspective view of a protective frame according to another embodiment of the present invention. As shown in FIG. 4, each protection frame 230 can surround two point light sources 224. Moreover, the present invention does not limit that each point source 224 must be surrounded by the security frame 230. For example, as shown in Figure 5, each protection frame
I I 201211634 230圍繞所述點光源224 Λ中之―，且保護框23㈣數量 點光源224的數量。另外，如圖6所示，在另一實施例中保 護框23G，的π徑可從頂面232朝用以與光源組之基板（圖未 示）接觸的一底面236漸縮，如此有助於提升光利用效率。 需說明的是，上述之面光源裝置2〇〇可應用於顯示器中， 以提供顯示面板所需之顯示光源，但本發明並不限定 置200的應用領域。 原裝 圖7疋本發明一實把例之顯示器的示意圖。請參照圖7， 本實施例之顯示器300包括顯示面板31〇及上述之面光源妒置 2〇〇，其中面光源裝置200用以提供顯示光束2〇2至顯示'^板 310。顯不面板310可為液晶顯示面板，但不以此為限。由於 本實施例之顯示器300所使用的面光源裝置2〇〇具有較佳的光 利用效率，所以可提升本實施例之顯示器3〇〇的光利用效率。 細上所述，本發明之實施例的面光源裝置及使用其之顯示 器至少具有下列其中一個優點： μ 1.本發明之實施例的面光源裝置使用設置於基板上的保 護框來防止導光板受熱膨脹後擠壓到設置於基板上的點光 源，所以可使導光板與光源組之間的間距能盡可能地縮小，以 提升光利用效率。 2.本發明之實施例的面光源裝置的保護框可選用彈性材 質製成’如此當導光板受熱膨脹擠壓到保護框時，保護框可適 度變开>使導光板能夠朝接近點光源的方向膨脹，以避免導光板 隆起。 3.本發明之實施例的顯示器因使用光利用效率較佳的面 光源裝置，所以具有較佳的光利用效率。 雖然本發明已以較佳實施例揭露如上，然其並非用以限定 201211634 ^發明’本發明所屬技術領域中具有通常知識者 明=|::“見後附之申請專利範圍所界定者為準。另外本發 部目專利範圍不須達成本發明所揭露之全 利外’摘要部分和標題僅是用來輔助專 文件搜哥之用，並非用來限制本發明之權利範圍。 【圖式簡單說明】I I 201211634 230 surrounds the point source 224, and protects the frame 23 (four) by the number of point sources 224. In addition, as shown in FIG. 6, in another embodiment, the π diameter of the protective frame 23G can be tapered from the top surface 232 toward a bottom surface 236 for contacting the substrate (not shown) of the light source group, which is helpful. To improve light utilization efficiency. It should be noted that the above-mentioned surface light source device 2 can be applied to a display to provide a display light source required for the display panel, but the present invention is not limited to the application field of the display 200. Original Figure 7 is a schematic view of a display of the present invention. Referring to FIG. 7, the display 300 of the present embodiment includes a display panel 31 and the above-mentioned surface light source device 2, wherein the surface light source device 200 is configured to provide a display beam 2〇2 to the display panel 310. The display panel 310 can be a liquid crystal display panel, but is not limited thereto. Since the surface light source device 2 used in the display 300 of the present embodiment has better light use efficiency, the light use efficiency of the display 3 of the present embodiment can be improved. As described above, the surface light source device and the display using the same according to the embodiments of the present invention have at least one of the following advantages: μ 1. The surface light source device of the embodiment of the present invention uses a protective frame provided on the substrate to prevent the light guide plate After being thermally expanded, it is extruded to a point light source disposed on the substrate, so that the distance between the light guide plate and the light source group can be reduced as much as possible to improve light utilization efficiency. 2. The protective frame of the surface light source device of the embodiment of the present invention can be made of an elastic material. [When the light guide plate is pressed by the thermal expansion to the protective frame, the protective frame can be appropriately opened.> The light guide plate can be approached to the point light source. The direction expands to avoid bulging of the light guide. 3. The display of the embodiment of the present invention has better light use efficiency by using a surface light source device having a better light utilization efficiency. Although the present invention has been disclosed in the above preferred embodiments, it is not intended to limit the scope of the invention as defined by the appended claims. In addition, the scope of the patents of the present invention is not required to achieve the full scope of the disclosure. The summary and the title are only used to assist the special document search, and are not intended to limit the scope of the invention. Description]
圖1是習知一種側邊入光式的背光模組的示意圖。 圖2是本發日卜實施例之一種面光源裝置的俯視示意圖。 圖3疋圖2之光源組與保護框的立體示音圖。 圖4本發明另一實施例之光源組與保護框的立體示意圖。 圖5本發明另一實施例之光源組與保護框的立體示意圖。 圖6是本發明另一實施例之保護框的立體示意圖。 圖7是本發明一實施例之顯示器的示意圖。“ 【主要元件符號說明】 100 :背光模組 110 導光板 112 入光面 114 出光面 120 光源組 122 電路板 124 發光二極體 200 面光源裝置 202 :顯示光束 201211634 210 :導光板 212 :入光面 214 :出光面 220 :光源組 222 :基板 224 :點光源 225 :出光面 230、230’ ：保護框 232 :頂面 234 :内表面 236 :底面 300 :顯示器 310 :顯示面板 Dl、D2 :距離 G ··間距FIG. 1 is a schematic diagram of a conventional edge-lit backlight module. 2 is a top plan view of a surface light source device of the embodiment of the present invention. Figure 3 is a perspective view of the light source group and the protective frame of Figure 2. 4 is a perspective view of a light source group and a protective frame according to another embodiment of the present invention. FIG. 5 is a perspective view of a light source group and a protective frame according to another embodiment of the present invention. Figure 6 is a perspective view of a protective frame according to another embodiment of the present invention. Figure 7 is a schematic illustration of a display in accordance with an embodiment of the present invention. [Major component symbol description] 100: backlight module 110 light guide plate 112 light incident surface 114 light emitting surface 120 light source group 122 circuit board 124 light emitting diode 200 surface light source device 202: display light beam 201211634 210: light guide plate 212: light into the light Face 214: Light-emitting surface 220: Light source group 222: Substrate 224: Point light source 225: Light-emitting surface 230, 230': Protection frame 232: Top surface 234: Inner surface 236: Bottom surface 300: Display 310: Display panel D1, D2: Distance G ·· Spacing