1240122 玖、發明說明 【發明所屬之技術領域】 本發明係有關於一種直下式背光模組（Direct-Type Backlight Unit)之反射結構，特別是反射面具有多重連續 斜面之反射結構。 【先前技術】 背光模組為液晶顯示器（Liquid Crystal Display ; LCD) 之基礎零件之一。由於液晶本身不會發光，必須在LCD 面板（Panal)後方加上背光源（大部分是螢光燈管），背光源 才又射出的光線穿透LCD面板（Panal)，進入人的眼睛形成 影像’其中LCD面板至少包含玻璃基板（Mother Glass)、 液晶、彩色濾光片（Color Filter)、偏光板（p〇larizer)等相 關材料。也就是說，液晶顯示器必須先利用背光源投射出 光源’此光線先經過第一塊偏光板然後再經過液晶，其中 液晶分子利用電壓的變化改變液晶分子的排列方式，並進 而改變穿透液晶的光線角度。這些光線接著還必須再經過 別方的彩色的濾光膜與第二塊偏光板。由於第二塊偏光板 和第一塊偏光板角度相差90度，原本應該會將所有的光 阻隔下來，但因為兩塊偏光板之間還有液晶可以控制光線 的角度，因此，只要改變能刺激液晶的電壓值就可以控制 最後出現的光線強度與色彩，進而能在液晶面板上出現 同深淺的顏色組合。 因此，背光模組的性能好壞會直接影響到lcd的口 1240122 質。背光源的成本約佔LCD模組的約3%至5%，所消耗 的電力更佔模組的約75%，是LCD模組中相當重要的零 組件。 以往大型LCD應用之產品，主要為筆記型電腦（N〇te1240122 发明 Description of the invention [Technical field to which the invention belongs] The present invention relates to a reflective structure of a direct-type backlight unit (Direct-Type Backlight Unit), particularly a reflective structure having a reflective surface with multiple continuous inclined surfaces. [Prior technology] The backlight module is one of the basic parts of a liquid crystal display (LCD). Since the liquid crystal itself does not emit light, a backlight (mostly a fluorescent tube) must be added behind the LCD panel (Panal), and the light emitted by the backlight penetrates the LCD panel (Panal) and enters the human eye to form an image 'The LCD panel includes at least glass substrate (Mother Glass), liquid crystal, color filter (color filter), polarizer (pollarizer) and other related materials. In other words, the liquid crystal display must first use a backlight to project the light source. This light first passes through the first polarizing plate and then passes through the liquid crystal. The liquid crystal molecules change the arrangement of the liquid crystal molecules by changing the voltage, and then change the transmission Light angle. These rays must then pass through another colored filter and a second polarizer. Because the angle between the second polarizer and the first polarizer is 90 degrees, all the light should be blocked, but because there is liquid crystal between the two polarizers, the angle of light can be controlled. The voltage value of the liquid crystal can control the intensity and color of the light that finally appears, and then the same color combination can appear on the LCD panel. Therefore, the performance of the backlight module will directly affect the quality of the LCD. The cost of the backlight source is about 3% to 5% of the LCD module, and the power consumed is about 75% of the module, which is a very important component in the LCD module. In the past, the products of large LCD applications were mainly notebook computers (N〇te
Book Personal Computet·)及 LCD 監視器（LCD Monitor)， 而所要求背光模組的特性主要在於重量輕、體積小、及厚 度薄。因此，在開發LCD電視用之背光源時，必須考慮 能有足夠的顯像亮度（至少要求450cd/m2以上）、寬廣的觀 看視角（目前銷售產品規格已可達170。）、鮮明的影像對 比度（目前LCD電視產品約500:1;電漿電視產品約i0〇〇:;^ 及合乎標準的使用壽命（目前產品測試值約6萬小時）。在 以上的規格考量下，直下式背光模組便成為目前搭配大型 LCD電視的技術主流，其設計的主要概念即在於為能因 應更高亮度的需求，將原本為能減輕模組重量及厚度考量 的側面光源，藉由直下式背光源將光線打散均勻，使光線 轉變為平面光源後，進入液晶面板的技術模式。 請參照第1圖，其係繪示習知技術之直下式背光模組 之立體結構之示意圖。以目前6至30支背光源1〇6之直 下式背光模組1 〇〇之反射結構為例，其内部反射面係至少 包含由至少一側板110提供例如與背光源106垂直之反射 面102、與背光源1〇6平行之反射面l〇4b、以及由底板 112提供之反射面l〇4a，共同將背光源106之光線打散均 勻。其中背光源106可例如冷陰極螢光燈管（Cold Cathode Fluorescent Lamp ; CCFL)。 1240122 上述之與背光源106垂直之側板110a —般由背光源 固定座所提供’與背光源106平行之側板11 Ob —般則由 底板112所提供，而底板112 —般為背板。 請參考第2圖’其係繪示習知技術之背光源固定座之 剖面圖’一般而言，與背光源106垂直之反射面1 02係由 第2圖之背光源固定座丨丨丨所提供。請參照第3圖，其係 繪不習知技術之背板丨丨3之剖面圖，其中背板丨丨3除了提 供反射面104a，更提供與背光源平行之反射面1〇4b。請 參照第4圖’其係綠示根據第1圖之直下式背光模組沿著 剖面線Y-Y’所得之部分剖面圖，其中反射面1〇2與水平 所夾之反射角<9 x係視周邊的線路空間丨〇8之需求而定， 例如反射角0 x可介於1〇5。至115。之間。請參照第5圖， 背板113之反射面i04b與水平所夾之反射角介於125。 至1 3 5。之間’如第5圖所示。 請參照第6圖，其係繪示根據第丨圖之直下式背光模 組之反射結構在反射光線時沿著剖面線γ_γ，所得之部分 剖面圖。一般而言，由背板113之反射面10钻反射背光 源106之光線經過LCD面板109後，反射出的部份光線 =2射入非發光區，就無法有效利用部份光線122的能 量。同樣請參照第7圖，其係緣示根據第i圖之直下式背 光模組之反射結構在反射光線時沿著剖面線χ_χ，所得之 部分剖面圖。由背板113之反射面1〇牦反射背光源1〇6 之光線經過LCD面板109後，反射出的部份光線124射 入非發光區，戶斤以無法有效利用部份光線124的能量。 1240122 簡而言之，由於習知技術之反射結構中，僅提供單一 斜面之反射面，因此在反射背光源後，有效發光區邊緣之 部分光線會射入非發光區而造成損失，使得液晶螢幕之邊 緣比中央暗，而導致液晶螢幕之邊緣的晝質不佳。 因此有必要提供一種直下式背光模組之反射結構，以 改善液晶螢幕之邊緣比中央暗的問題。 【發明内容】 本發明的目的之一就是揭露一種直下式背光模組之 反射結構，係至少包含底板及至少一側板，其中由於底板 及至少一側板之反射面具有多重連續斜面，可有效解決液 晶螢幕顯示器之發光區邊緣偏暗的問題，並增加液晶螢幕 顯示器之輝度。 根據本發明上述之目的，提出一種直下式背光模組之 反射、σ構至少包括·底板；以及至少一側板，而至少一 側板至少包含：第一反射面，其中第一反射面係與底板連 接’且第一反射面與底板具有第一夾角，而其中第一夾角 小於180。；以及第二反射面，其中第二反射面與第一反 射面連接且弟一反射面與第一反射面具有第二夾角，而 其中第二夾角小於第一夾角且第二夾角等於或大於9〇。。 上述之第一反射面與第二反射面可例如為至少一平 面、至少一下凹曲面或至少一上凸曲面。 上述之底板與至少一側板可例如由一體成形而製 得或藉由連接結構而連接底板與至少一側板。 1240122 【實施方式】 本發明係揭露一種直下式背光模組之反射結構，至少 包括·底板，以及至少一側板，而至少一側板至少包含： 第一反射面，其中第一反射面係與底板連接，且第一反射 面與底板具有第一夾角，而其中第一夾角小於180。；以 及第二反射面，其中第二反射面與第一反射面連接，且第 一反射面與第一反射面具有第二夾角，而其中第二夾角小 於第一夾角且第二夾角等於或大於9〇。。 上述之底板可利用具有反射材質所製成之背板，例如 無製或鍍鋁之背板。 上述之第一反射面與第二反射面之可例如為至少一 平面、至少一下凹曲面或至少一上凸曲面。 值得一提的是，本發明使用之底板及側板之組合並非 用以限定本發明，任何熟習此技藝者，在不脫離本發明之 精神和範圍内，當可作各種之更動與潤飾。本發明之至少 側板與底板可例如由一體成形而製得，或藉由連接結構 乂連接至少一側板與底板。在本發明的一個例子中，告反 射結構由一面底板及四面側板組成盒狀物時，底板可為鋁 背板i而四面側板可獨立或組成一體，其中底板與四面侧 板可藉由卡榫或螺釘連接，也就是由連接結構以連接底板 與至少一側板而製得之反射結構。在本發明之另一個例子 中，當反射結構由一面底板及二面側板組成盒狀物時，底 板可為鋁背板且提供二面與背光源平 一 1丁 <反射面之側 1240122 板，而另二面可由背光源固定座提供二面與背光源垂直之 反射面之側板，其中鋁背板與背光源固定座可藉由卡榫或 螺釘連接，也就是由連接結構以連接底板與至少一侧板而 製得之反射結構。在本發明的又一個例子中，當反射結構 由一面底板及四面侧板組成盒狀物時，底板亦可為鋁背板 並k供四面與背光源平行之反射面之側板，也就是由一體 成形而製得之反射結構，其中在二面與背光源垂直之反射 面上更可設有複數個孔，以利於背光源***反射結構外之 燈座用。 以下係以一面底板及二面側板組成之反射結構作為 本發明一較佳實施例並配合圖式，詳細說明本發明之實 施。 凊參照第8圖，其係繪示根據本發明一較佳實施例之 直下式背光模組之立體結構之示意圖。以目前6至3 〇支 背光源206之直下式背光模組2〇〇之反射結構為例，其内 部反射面至少包含由至少一側板21〇提供例如與背光源 206垂直之反射面2〇2a和反射面2〇2b、與背光源2〇6平 行之反射面204b和反射面204c、以及由底板212提供之 反射面204a，將背光源2〇6之光線打散均勻。其中背光 源206可例如冷陰極螢光燈管（CCFL)。 上述之與背光源206垂直之側板210a —般由背光源 固定座所提供，與背光源206平行之侧板2l〇b —般則由 底板212所提供，而底板212 一般為背板。 月多考弟9圖，其係繪示根據本發明一較佳實施例之 1240122 背光源固定座之立體部份剖面圖，其中背光源固定座2 11 提供之與背光源垂直之反射面202a及反射面202b即為第 8圖之側板210a，其中反射面202b上更可設有複數個孔 洞215，係用以固定第8圖之背光源206。 請參照第10圖，其係緣示根據本發明一較佳實施例 之背板之部份立體剖面圖，其中本發明之背板2 13提供之Book Personal Computet ·) and LCD Monitor. The characteristics of the required backlight module are mainly light weight, small size, and thin thickness. Therefore, when developing a backlight for LCD TVs, it is necessary to consider that it has sufficient display brightness (at least 450cd / m2 or more is required), a wide viewing angle (currently the product specifications are up to 170.), and sharp image contrast. (Currently, LCD TV products are about 500: 1; plasma TV products are about i00: 00; ^ and a standard service life (current product test value is about 60,000 hours). Under the above specifications, direct-type backlight modules It has become the current mainstream technology for large LCD TVs. The main concept of its design is to respond to the demand for higher brightness. It will be a side light source that can reduce module weight and thickness considerations. After being dispersed evenly, the light is converted into a flat light source, and then enters the technical mode of the LCD panel. Please refer to Figure 1, which is a schematic diagram showing the three-dimensional structure of the direct-type backlight module of the conventional technology. As an example, the reflection structure of the direct-lit backlight module 100 of the backlight 106 is internal reflection surface including at least one side plate 110 provided, for example, perpendicular to the backlight 106 The reflecting surface 102, the reflecting surface 104b parallel to the backlight source 106, and the reflecting surface 104a provided by the bottom plate 112 collectively disperse the light of the backlight source 106. Among them, the backlight source 106 may be, for example, a cold cathode fluorescent lamp. Cold Cathode Fluorescent Lamp (CCFL). 1240122 The above-mentioned side panel 110a perpendicular to the backlight 106 is generally provided by the backlight fixture's side panel 11 Ob parallel to the backlight 106 is generally provided by the bottom plate 112 The bottom plate 112 is generally a back plate. Please refer to FIG. 2 which is a cross-sectional view of a backlight fixing base of the conventional technology. Generally, the reflection surface 102 perpendicular to the backlight 106 is from the second The backlight mounts shown in the figure are provided. Please refer to Figure 3, which is a cross-sectional view of the back plate of the unfamiliar technology. The back plate, in addition to the reflective surface 104a, is also provided with The parallel reflective surface 104b of the backlight source. Please refer to FIG. 4 'which shows the partial cross-sectional view of the direct-type backlight module according to FIG. 1 taken along the section line Y-Y' in green, where the reflective surface 102 Reflection angle between horizontal and horizontal lines <9 x depending on the surrounding line space Depending on the requirements of 〇8, for example, the reflection angle 0x may be between 105 and 115. Please refer to FIG. 5. The reflection angle between the reflection surface i04b of the back plate 113 and the horizontal is between 125. to 1 3 5. The interval is as shown in Figure 5. Please refer to Figure 6, which shows the reflection structure of the direct type backlight module according to Figure 丨 along the section line γ_γ when reflecting light, In general, after reflecting the light from the backlight 106 through the reflective surface 10 of the back plate 113 through the LCD panel 109, a part of the reflected light = 2 enters the non-light-emitting area, and it is impossible to effectively use part of the light 122 energy of. Please also refer to FIG. 7, which shows a partial cross-sectional view of the reflection structure of the direct-type backlight module according to FIG. I along the section line χ_χ when reflecting light. After reflecting the light from the backlight 10 through the reflecting surface 10 of the back plate 113 through the LCD panel 109, a part of the reflected light 124 enters the non-light emitting area, and the household cannot use the energy of the partial light 124 effectively. 1240122 In short, because the reflective structure of the conventional technology only provides a single beveled reflective surface, after reflecting the backlight, part of the light at the edge of the effective light-emitting area will enter the non-light-emitting area and cause loss, making the LCD screen The edges are darker than the center, resulting in poor day quality at the edges of the LCD screen. Therefore, it is necessary to provide a reflection structure of the direct type backlight module to improve the problem that the edge of the LCD screen is darker than the center. [Summary of the Invention] One of the objectives of the present invention is to disclose a reflective structure of a direct type backlight module, which includes at least a bottom plate and at least one side plate, wherein the reflective surface of the bottom plate and at least one side plate has multiple continuous inclined surfaces, which can effectively solve the liquid crystal. The problem of dark edges of the light-emitting area of the screen display and increasing the brightness of the LCD screen display. According to the above-mentioned object of the present invention, a reflection type and a sigma structure of a direct type backlight module are provided, which includes at least a bottom plate, and at least one side plate, and at least one side plate includes at least a first reflection surface, wherein the first reflection surface is connected to the bottom plate. 'And the first reflecting surface and the bottom plate have a first included angle, and the first included angle is less than 180. And a second reflecting surface, wherein the second reflecting surface is connected to the first reflecting surface and the first reflecting surface and the first reflecting surface have a second included angle, and wherein the second included angle is smaller than the first included angle and the second included angle is equal to or greater than 9 〇. . The first reflecting surface and the second reflecting surface may be, for example, at least one plane, at least one concave surface, or at least one convex surface. The above-mentioned bottom plate and at least one side plate can be made, for example, by being integrally formed, or the bottom plate and at least one side plate can be connected by a connection structure. 1240122 [Embodiment] The present invention discloses a reflective structure of a direct type backlight module, which includes at least a bottom plate and at least one side plate, and at least one side plate includes at least: a first reflection surface, wherein the first reflection surface is connected to the bottom plate , And the first reflecting surface and the bottom plate have a first included angle, and the first included angle is less than 180. And a second reflecting surface, wherein the second reflecting surface is connected to the first reflecting surface, and the first reflecting surface and the first reflecting surface have a second included angle, and wherein the second included angle is smaller than the first included angle and the second included angle is equal to or greater than 90. . The above-mentioned base plate may be a back plate made of a reflective material, such as an unmade or aluminized back plate. The first reflecting surface and the second reflecting surface may be, for example, at least one plane, at least one concave surface or at least one convex surface. It is worth mentioning that the combination of the bottom plate and the side plate used in the present invention is not intended to limit the present invention. Any person skilled in the art can make various modifications and decorations without departing from the spirit and scope of the present invention. The at least side plate and the bottom plate of the present invention can be made, for example, by integral molding, or the at least one side plate and the bottom plate are connected by a connection structure 结构. In an example of the present invention, when the reflective structure is composed of a bottom plate and four side plates, the bottom plate may be an aluminum back plate and the four side plates may be independent or integrated. The bottom plate and the four side plates may be formed by a tenon. Or screw connection, that is, a reflective structure made by connecting the structure to connect the bottom plate with at least one side plate. In another example of the present invention, when the reflective structure is composed of a bottom plate and two side plates, the bottom plate may be an aluminum back plate and provide two sides that are flat with the backlight source. 1 <1240122 side of the reflecting surface, The other two sides can be provided by the backlight fixing base with two sides of the reflective surface perpendicular to the backlight side, wherein the aluminum back plate and the backlight fixing base can be connected by tenons or screws, that is, the connection structure to connect the bottom plate and at least A reflective structure made from a side plate. In another example of the present invention, when the reflective structure is composed of a bottom plate and four-sided side plates, the bottom plate may also be an aluminum back plate and a side plate for the reflective surface on which the four sides are parallel to the backlight source, that is, integrated. The formed and formed reflective structure may further include a plurality of holes on the reflective surface whose two sides are perpendicular to the backlight, so as to facilitate the backlight to be inserted into the lamp holder outside the reflective structure. In the following, a reflecting structure composed of one bottom plate and two side plates is used as a preferred embodiment of the present invention and the drawings are used to describe the implementation of the present invention in detail.凊 Referring to FIG. 8, it is a schematic diagram showing the three-dimensional structure of a direct type backlight module according to a preferred embodiment of the present invention. Taking the current reflection structure of direct-type backlight module 2000 of 6 to 30 backlight sources 206 as an example, the internal reflection surface includes at least one side plate 21, such as a reflection surface 202a that is perpendicular to the backlight source 206. The reflecting surface 204b and the reflecting surface 204b and the reflecting surface 204c that are parallel to the backlight source 206, and the reflecting surface 204a provided by the bottom plate 212 will evenly distribute the light from the backlight source 206. The backlight source 206 may be, for example, a cold cathode fluorescent lamp (CCFL). The above-mentioned side plate 210a perpendicular to the backlight source 206 is generally provided by a backlight fixing base, and the side plate 210b parallel to the backlight source 206 is generally provided by a bottom plate 212, and the bottom plate 212 is generally a back plate. Fig. 9 of Yueduoduodi is a three-dimensional partial cross-sectional view of a 1240122 backlight fixing base according to a preferred embodiment of the present invention, in which the reflecting surface 202a provided by the backlight fixing base 2 11 and the backlight are perpendicular to the backlight source 202a and The reflective surface 202b is the side plate 210a of FIG. 8, and a plurality of holes 215 may be provided on the reflective surface 202b to fix the backlight 206 of FIG. 8. Please refer to FIG. 10, which is a partial perspective cross-sectional view of a back plate according to a preferred embodiment of the present invention. The back plate 2 13 of the present invention provides
與背光源206平行之反射面204b及反射面204c即為第8 圖之側板210b，而背板213提供反射面204a即第8圖中 之底板212。背板213更提供反射面204a，與上述之反身 面202a、反射面202b、反射面204b、以及反射面2〇4c 共同將背光源206之光線打散均勻。 根據本發明一較佳實施例，背光源固定座2 11可為焉 碳酸酯（PolyCarbonate ; PC)材質，其中pc材質可含有令 如二氧化鈦（Titanium 0xide ; Ti〇2)之高反射材質，將必 PC材質利用例如塑膠射出成形之方式製作出背光㈣The reflective surface 204b and the reflective surface 204c parallel to the backlight 206 are the side plate 210b in FIG. 8, and the back plate 213 provides the reflective surface 204a, the bottom plate 212 in FIG. 8. The back plate 213 further provides a reflective surface 204a, which, together with the reflective surface 202a, the reflective surface 202b, the reflective surface 204b, and the reflective surface 204c described above, evenly diffuses the light from the backlight 206. According to a preferred embodiment of the present invention, the backlight fixing base 2 11 may be made of PolyCarbonate (PC). The PC material may contain a highly reflective material such as titanium dioxide (Titanium 0xide; Ti〇2). The PC material uses a method such as plastic injection molding to make the backlight.
f 。至於本發明之背板213之材質則利用具有反射木 質所製成，例如鋁製或鍍鋁之背板。 睛參照第11圖，其係繪示根據第8圖之直下式背^ :組之反射結構沿著剖面線γ_γ，所得之部分剖面二 =射面2G2a與水平所夾之反射角為％，而反射面繼 if二：失之反射角為ΘΧ2’且反射角〜與b之H 係：料的線路空間之需求而定，一般而言反射角( U係小於反射角0 χ1，其中反射角0 W鱼 於QA。 >、βχ2係大於或4 於9〇且小於180〇舉 ⑴朽σ XI可例如介於1〇5 11 1240122 至115。之間，而反射角θ I a丨，上 入町月y η可例如為約9〇0。 請參照第12圖，其倍洛千^播 、係、、、日不根據第8圖之直下式背光 模組之反射結構沿者剖面線X又， 深λΧ所得之部分剖面圖，其 中反射面204b與水平所夾之反射 ^ ^ 〜η荷6/yl’而反射面2〇4c 與水平所夾之反射角為θν2，一妒而& y2 叙而g反射角0 y2係小於 反射角0yl’其中反射角0 n J么 W Θ y2係大於或等於9〇。且 小於1 8 0。〇舉例而言，反射角0 八⑺β a yl可例如介於125。至135。 之間，而反射角0 β可例如為約90〇。 請再參照第11圖，當本發明背光源固定座211提供 之反射面為兩段式連續斜面，即反射面2〇2&與反射面 2〇2>b時，背光源固定座211所提供之反射面2〇孔的之垂 直高度為高度h，反射面202a之垂直高度為高度η，其 中局度h為南度Η之約1/2至1/5。 請再參照第丨2圖，當背板213提供之反射面為兩段 式連續斜面，即反射面204b與反射面2〇4c時，背板213 所提供之反射面204c之垂直高度為高度h，反射面2〇仆 之垂直高度為高度Η，其中高度11為高度H之約1/2至 1 /5。同理可推，在本發明的另一個例子中，當背板提供 之反射面為兩段以上之連續斜面時，與底板相連之第一斜 面之垂直咼度為咼度Η，而與第一斜面相連之第二斜面及 第二斜面以上的剩餘連續斜面之垂直高度為高度h，其中 高度h亦為高度Η之約1/2至1/5。 值得一提的是’本發明之反射結構所提供之反射面不 僅限於兩段式連續斜面’更可使用兩段以上連續斜面之反 12 1240122 射面’至於兩段以上連續斜面之反射面係於稍後在加以詳 述。 請參照第13圖至第14圖，其係繪示根據本發明一較 佳實施例之直下式背光模組之反射結構反射光線之剖面 圖’其中第13圖為第8圖之直下式背光模組200沿著直 線Y-Y’所得之剖面圖，第14圖為第8圖之直下式背光模 組200沿著直線χ_χ，所得之剖面圖。請參照第13圖，由 月板213之反射面2〇4a反射背光源206之光線，再經過 背光源固定座2 11之反射面202b反射後，反射出的部份 光線222會射入有效發光區，就可以有效利用部份光線 222的能量。同樣請參照第14圖，由背板213之反射面 204a反射背光源206之光線，再經過背板213之反射面 204c反射後’反射出的部份光線224會射入有效發光區， 就可以有效利用部份光線224的能量。因此液晶螢幕之邊 緣與中央係具有相等輝度，解決習知技術中液晶螢幕之邊 緣比中央暗的問題。 值得一提的是，本發明反射結構的反射面之特徵係在 於將靠近LCD面板之反射面設計成近直面，以避免經 反射結構反射後的光線射入非發光區，因此本發明於上述 揭路之反射結構並非用以限定本發明，任何熟習此技藝 者，在不脫離本發明之精神和範圍内，當可作各種之更動 與潤飾。舉例而言，由至少一側板210提供之與背光源 206垂直之反射面202a、反射面202b、以及與背光源2〇6 平行之反射面204b和反射面204c，更可例如為第15圖 13 1240122 所示之複數個連縯斜面3 1 〇a、斜面3 1 Ob、斜面3 10c及斜 面3 10d ’第16圖所示之複數個連續斜面32〇a、斜面 320b、斜面320c及斜面32〇d，第17圖所示之複數個連 續上凸曲面330a、曲面33 0b、曲面330c及斜面330d， 第18圖所示之單一下凹曲面340 a及斜面3 40d，以及第 19圖所示之單一上凸曲面350a及斜面35 0d等。然而， 本發明之與背光源垂直或水平之反射面的斜面數量及角 度不在此限，任何避免反射後的光線射入非發光區之反射 結構的設計，均不脫離本發明之精神和範圍。 由上述本發明較佳實施例可知，應用本發明之直下式 背光模組之反射結構，係至少包含底板及至少一側板，其 中由於底板及至少一側板之反射面具有多重連續斜面，可 增加液晶顯示器之輝度，並有效解決液晶顯示器之發光區 邊緣偏暗的問題。 雖然本發明已以較佳實施例揭露如上，然其並非用以 限定本發明，任何熟習此技藝者，在不脫離本發明之精神 和範圍内，當可作各種之更動與潤飾，因此本發明之保護 範圍當視後附之申請專利範圍所界定者為準。 【圖式簡單說明】 弟1圖係繪示習知技術之直下式背光模組之立體結 構之示意圖； 第2圖係繪示習知技術之背光源固定座之剖面圖； 第3圖係繪示習知技術之背板之剖面圖； 14 1240122 第4圖係給一 始Υ γ,Μ不根據第1圖之直下式背光模組沿著剖面 第5广之部分剖面圖； 嬙X X,係會不根據第1圖之直下式背光模組沿著剖面 線Χ-Χ所得之部分剖面圖； 弟6圖係給一 構在反射光線;:第1圖之直下式背光模組之反 ^ η m /口者剖面線Y-Y，所得之部分剖面圖； 弟7圖係输千## & 嬙^巧私丄 Μ根據苐1圖之直下式背光模組之反射結 構在反射光線時孔 第8圖传：者/面線Μ，所得之部分剖面圖； 光模組之立體直 卜正體結構之示意圖； ^圖係繪示根據本發明一較佳實施例之背光源固 疋座2部份立體剖面圖； 於> I μ圖係、θ不根據本發明一較佳實施例之背板之部 份立體剖面圖； ¥11 示根據第8圖之直下式背光模組之反射 料以MgY_Y’所得之部分剖面圖； 弟12圖係•示根據第8圖之直下式背光模組之反射 結構u_x，所得之部分剖面圖； 妹搂ί /圖係％不根據第8圖之直下式f光模組之反射 射光線時沿著剖面線γ·γ，所得之部分剖面圖； 、圖係繪不根據本發明一較佳實施例之直下式背 =組之反射結構在反射光線時沿著剖面，線X 部分剖面圖；以及 1 Τ 弟15圖至第19圖係綠示根據本發明數個較佳實施例 15 1240122 之反射面立體結構之不意圖。 【元件代表符號簡單說明】 100 :直下式背光模組 102 :反射面 104a :反射面 104b :反射面 106 :背光源 108 :線路空間 109 : LCD 面板 11 0 :側板 111 :背光源固定座 112 :底板 11 3 :背板 124 :部份光線 122 :部份光線 200 :直下式背光模組 202a :反射面 202b :反射面 204a :反射面 204b :反射面 204c :反射面 206 :背光源 208 :線路空間 209 ·· LCD 面板 210 :側板 211 :背光源固定座 212 :底板 213 :背板 21 5 :孔洞 222 :部份光線 224 :部份光線 310a :斜面 310b :斜面 310c :斜面 3 10d :斜面 320a :斜面 320b :斜面 320c :斜面 320d :斜面 330a :曲面 330b :曲面 330c :曲面 330d :斜面 16 1240122 340a :曲面 350a :曲面 Η :高度 340d ：斜面 350d ··斜面 h :高度f. As for the material of the back plate 213 of the present invention, the back plate 213 is made of reflective wood, such as an aluminum or aluminized back plate. Referring to FIG. 11, which shows the direct-type back according to FIG. 8 ^: The reflection structure of the group is along the section line γ_γ, and the obtained partial section 2 = the reflection angle between the projection surface 2G2a and the level is%, and Reflective surface following if 2: reflection angle is Θχ2 'and reflection angle ~ and b's H series: depending on the requirements of the line space of the material, in general, the reflection angle (U series is less than the reflection angle 0 χ1, where the reflection angle 0 W fish is in QA. ≫ βχ2 is greater than or 4 and less than 90 and less than 180. For example, σ XI may be between 105 and 1240122 to 115 °, and the reflection angle θ I a 丨 is entered. Machatsu y η may be, for example, about 900. Please refer to FIG. 12, which shows the reflection structure of the direct-type backlight module along the cross-section line X of the direct-type backlight module shown in FIG. 8. A partial cross-sectional view obtained by deep λ ×, in which the reflection between the reflection surface 204b and the level ^ ^ ~ η charge 6 / yl 'and the reflection angle between the reflection surface 204c and the level is θν2, and jealousy & y2 The reflection angle 0 y2 is smaller than the reflection angle 0yl ', where the reflection angle 0 n J? W Θ y2 is greater than or equal to 90. And less than 180. For example, the reflection angle The angle 0 ⑺ β a yl may be, for example, between 125 ° and 135. The reflection angle 0 β may be, for example, about 90 °. Please refer to FIG. 11 again, when the reflection surface provided by the backlight fixing base 211 of the present invention is When the two-segment continuous inclined surface, that is, the reflective surface 202 and the reflective surface 202 and b, the vertical height of the reflective surface 20 hole provided by the backlight fixing base 211 is the height h, and the vertical height of the reflective surface 202a Is the height η, where the locality h is about 1/2 to 1/5 of the south. 请 Please refer to Figure 2 again, when the reflection surface provided by the back plate 213 is a two-segment continuous inclined surface, that is, the reflection surface 204b and For the reflecting surface 204c, the vertical height of the reflecting surface 204c provided by the back plate 213 is the height h, and the vertical height of the reflecting surface 20 is the height Η, where the height 11 is about 1/2 to 1/5 of the height H Similarly, it can be inferred that, in another example of the present invention, when the reflective surface provided by the backplane is two or more continuous inclined planes, the vertical angle of the first inclined plane connected to the bottom plate is 咼 degree, and the The vertical height of the second inclined plane connected by one inclined plane and the remaining continuous inclined planes above the second inclined plane is the height h, where the height h is also The height Η is about 1/2 to 1/5. It is worth mentioning that 'the reflective surface provided by the reflective structure of the present invention is not limited to a two-segment continuous bevel surface', but it is also possible to use the inverse 12 1240122 projection surface of two or more continuous bevel surfaces. 'As for the reflective surfaces of two or more consecutive inclined surfaces, which will be described in detail later, please refer to FIGS. 13 to 14, which show the reflective structure of a direct-type backlight module according to a preferred embodiment of the present invention. A cross-sectional view of reflected light, where FIG. 13 is a cross-sectional view of the direct-type backlight module 200 of FIG. 8 along the line Y-Y ′, and FIG. 14 is a direct-type backlight module 200 of FIG. 8 along the line χ_χ, the resulting cross-sectional view. Please refer to FIG. 13. The light from the backlight 206 is reflected by the reflecting surface 204a of the moon plate 213, and then reflected by the reflecting surface 202b of the backlight fixing base 2 11. Part of the reflected light 222 will enter the effective light emission. Zone, the energy of part of the light 222 can be effectively used. Also referring to FIG. 14, the light from the backlight 206 is reflected by the reflective surface 204 a of the back plate 213, and then reflected by the reflective surface 204 c of the back plate 213, and a portion of the light 224 reflected off will enter the effective light emitting area. The energy of part of the light 224 is effectively used. Therefore, the edges of the LCD screen and the central system have equal brightness, which solves the problem that the edges of the LCD screen are darker than the center in the conventional technology. It is worth mentioning that the reflective surface of the reflective structure of the present invention is characterized in that the reflective surface close to the LCD panel is designed to be a near straight surface to avoid the light reflected by the reflective structure from entering the non-light emitting area. Therefore, the present invention is disclosed in the above disclosure. The reflection structure of the road is not intended to limit the present invention. Any person skilled in the art can make various changes and decorations without departing from the spirit and scope of the present invention. For example, the reflective surface 202a, the reflective surface 202b, and the reflective surface 204b and the reflective surface 204c parallel to the backlight 206 provided by at least one side plate 210 are perpendicular to the backlight 206. 1240122 shows a plurality of consecutive slopes 3 1 〇a, slopes 3 1 Ob, slopes 3 10c, and slopes 3 10d 'Figure 16 shows a plurality of consecutive slopes 32 0a, slopes 320b, slopes 320c, and slopes 32. d, a plurality of continuous upwardly curved surfaces 330a, 33b, 33c, and 330d shown in FIG. 17, a single concavely curved surface 340a and 3d 40d shown in FIG. 18, and A single upwardly convex curved surface 350a, an inclined surface 350d, and the like. However, the number and angle of the inclined surfaces of the reflective surface perpendicular to or horizontal to the backlight of the present invention are not limited thereto, and any design of the reflective structure to prevent reflected light from entering the non-light-emitting area does not depart from the spirit and scope of the present invention. It can be known from the above-mentioned preferred embodiments of the present invention that the reflection structure of the direct type backlight module to which the present invention is applied includes at least a bottom plate and at least one side plate, wherein the reflective surface of the bottom plate and at least one side plate has multiple continuous inclined surfaces, which can increase liquid crystal. The brightness of the display, and effectively solve the problem of dark edges of the light-emitting area of the liquid crystal display. Although the present invention has been disclosed as above with preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make various modifications and retouches without departing from the spirit and scope of the present invention. Therefore, the present invention The scope of protection shall be determined by the scope of the attached patent application. [Schematic description] Figure 1 is a schematic diagram showing the three-dimensional structure of the direct-type backlight module of the conventional technology; Figure 2 is a sectional view of the backlight fixing base of the conventional technology; 14 1240122 Figure 4 shows a section of the backplane of the conventional technology. Γ, Μ is not according to the direct-type backlight module of Figure 1 along the fifth section of the section; 嫱 XX, series Partial cross-sectional view of the direct-type backlight module according to FIG. 1 taken along the cross-sectional line X-X; Figure 6 is a reflection of a direct-type backlight module; ^ η m / 口 者 profile line YY, part of the cross-sectional view obtained; younger figure 7 is a thousand ## &; 巧 丄 丄 巧 巧 According to Figure 1 of the direct-type backlight module of the reflective structure of the eighth hole when reflecting light Photograph: Partial cross-sectional view of the person / face line M; Schematic diagram of the three-dimensional straight normal structure of the optical module; ^ The picture shows two parts of the backlight fixture holder according to a preferred embodiment of the present invention Sectional view; > I μ diagram, a partial three-dimensional cross-sectional view of a back plate that is not according to a preferred embodiment of the present invention; ¥ 11 shows a partial cross-sectional view of the reflective material of the direct type backlight module according to FIG. 8 obtained by using MgY_Y ′; FIG. 12 is a partial cross-sectional view of the reflective structure u_x of the direct type backlight module according to FIG. 8搂 / The picture is not based on the direct-type f light module of Figure 8 reflected light rays along the section line γ · γ, the partial cross-sectional view obtained; The direct-type back structure of the embodiment is a cross-sectional view along the section, line X when reflecting light; and Figures 1 through 15 through 19 show green in accordance with several preferred embodiments 15 1240122 of the present invention. The intention of the three-dimensional structure of the reflecting surface. [Simple description of component representative symbols] 100: direct type backlight module 102: reflective surface 104a: reflective surface 104b: reflective surface 106: backlight 108: line space 109: LCD panel 11 0: side panel 111: backlight fixing base 112: Base plate 11 3: back plate 124: partial light 122: partial light 200: direct type backlight module 202 a: reflective surface 202 b: reflective surface 204 a: reflective surface 204 b: reflective surface 204 c: reflective surface 206: backlight 208: line Space 209 · LCD panel 210: side panel 211: backlight holder 212: bottom plate 213: back plate 21 5: hole 222: partial light 224: partial light 310a: bevel 310b: bevel 310c: bevel 3 10d: bevel 320a : Bevel 320b: bevel 320c: bevel 320d: bevel 330a: curved 330b: bevel 330c: bevel 330d: bevel 16 1240122 340a: bevel 350a: bevel Η: height 340d: bevel 350d · bevel h: height
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