200931129 九、發明說明： 【發明所屬之技術領域】 本發明係關於一種背光模組、液晶顯示模組及液晶顯 示裝置’特別關於一種側光式之背光模組、液晶顯示模組 及液晶顯示裝置。 【先前技術】 隨著平面顯示裝置（Flat Panel Display, FPD)技術的 〇發展，液晶顯示裝置因具有體型輕薄、低功率消耗及無輻 射等優越特性，已經漸漸地取代傳統陰極射線管（Cathode Ray Tube，CRT)顯示裝置，並且應用至各式電子產品。一 般液晶顯示裝置主要係由一液晶顯示面板（Liquid Crystal Display Panel)與一背光模組（Backlight Module)組合而 成。 請參照圖1所示，一種習知的背光模組1係包含複數 發光二極體 11、一 導光板（ Light-Guiding Plate，LGP ) 12、 一光擴散片（Optical Diffusing Sheet )13、一 棱鏡片（PrismThe invention relates to a backlight module, a liquid crystal display module and a liquid crystal display device, in particular to an edge-lit backlight module, a liquid crystal display module and a liquid crystal display device. . [Prior Art] With the development of flat panel display (FPD) technology, liquid crystal display devices have gradually replaced traditional cathode ray tubes (Cathode Ray) due to their superior characteristics such as slimness, low power consumption and no radiation. Tube, CRT) display device, and applied to a variety of electronic products. Generally, a liquid crystal display device is mainly composed of a liquid crystal display panel and a backlight module. Referring to FIG. 1 , a conventional backlight module 1 includes a plurality of LEDs 11 , a Light-Guiding Plate (LGP ) 12 , an Optical Diffusing Sheet 13 , and a prism . Piece (Prism
Sheet) 14及一背板15。其中，發光二極體11係設置在一 電路板16上，且面對導光板12之一入光面121設置成一 列，光擴散片13係鄰設於導光板12之一出光面122，而 稜鏡片14係鄰設於光擴散片13之一侧，另外，背板15 係用以容置導光板12,背板15上並設置有一反射片（未 圖示）或者背板15之上表面即塗覆有反射材質而具有光 反射性。 200931129 當發光二極體11所發出之光線係經由入光面121進 入導光板12時，大部分光線會在導光板12之上表面或下 表面產生全反射並繼續前進傳遞，並達到各光源光線均勻 混光的效果，而當前進傳遞中的部分光線射至導光板12 之下表面之印刷網點（未圖示）時，會產生散射而破壞光 線的全反射而中斷前進傳遞現象，造成這些光線向上散射 並折射出導光板12之出光面122,或者在傳遞途中在導光 板12下表面不經全反射而向下折射逃逸而出的部分光線 〇 亦會經由反射片或背板15的反射而向上射出導光板12。 然後，上述各向上射出導光板12的光線再經過光擴散片 13及稜鏡片14,並得到良好的光線性質，如光線均勻化、 高亮度等等。最後，光線係透過液晶顯示面板而成為多采 多姿的晝面。 請參照圖2,其係為複數發光二極體11進行混光之一 簡單示意圖。其中，發光二極體11通常係以四個為一混 光單元，且在一個混光單元中，具有一個紅光二極體111、 〇 二個綠光二極體112及一個藍光二極體113，分別發出紅 光、綠光及藍光（三原色）之光線，在經過混光後，即可 形成白光，於此使用二個綠光二極體係為彌補綠光二極體 之亮度不足。 每一發光二極體11係約以一角度2α發射光線，其中 α為發光二極體Π於發光強度為1/2最大發光強度時之角 度。如圖2所示，各發光二極體11所發出之光線係形成 一交錯重疊之混光區域，在每一混光區域中係已加註該混 200931129 光區域所參與混光之色光，而在經過一混光距離χ後，一 混光單元即完成混光，也就是於混光距離X之後，各混光 區域均已具有三原色紅、綠、藍的光。混光距離X係符合 下列式子：Sheet) 14 and a back sheet 15. The light-emitting diodes 11 are disposed on a circuit board 16 and are disposed in a row facing the light-incident surface 121 of the light-guide plate 12, and the light-diffusing sheet 13 is disposed adjacent to one of the light-emitting surfaces 122 of the light guide plate 12, and The cymbal sheet 14 is disposed adjacent to one side of the light diffusing sheet 13. The backing plate 15 is for accommodating the light guide plate 12, and the back plate 15 is provided with a reflecting sheet (not shown) or the upper surface of the backing plate 15. That is, it is coated with a reflective material and has light reflectivity. 200931129 When the light emitted by the LED 11 enters the light guide plate 12 via the light incident surface 121, most of the light will be totally reflected on the upper surface or the lower surface of the light guide plate 12 and continue to be transmitted forward, and the light of each light source is reached. The effect of uniform light mixing, and when part of the light in the current transmission is incident on the printing dot (not shown) on the lower surface of the light guide plate 12, scattering occurs to destroy the total reflection of the light and interrupt the forward transmission phenomenon, thereby causing the light to be transmitted. A portion of the light ray that is scattered upwardly and refracted by the light-emitting surface 122 of the light guide plate 12 or that is refracted by the lower surface of the light guide plate 12 without total reflection during transmission is also reflected by the reflection sheet or the back sheet 15 The light guide plate 12 is emitted upward. Then, the above-mentioned light rays which are emitted upward from the light guide plate 12 pass through the light diffusion sheet 13 and the cymbal sheet 14, and obtain good light properties such as uniformity of light, high brightness, and the like. Finally, the light is transmitted through the liquid crystal display panel to become a multi-faceted face. Please refer to FIG. 2, which is a simplified schematic diagram of the light mixing diode 11 for light mixing. The light-emitting diode 11 is generally composed of four light mixing units, and has a red light diode 111, two green light diodes 112, and one blue light diode 113 in one light mixing unit. The light of red light, green light and blue light (three primary colors) is respectively emitted, and after being mixed, white light can be formed, and two green light two-pole systems are used to compensate for the lack of brightness of the green light diode. Each of the light-emitting diodes 11 emits light at an angle of 2α, where α is the angle at which the light-emitting diode is at a maximum luminous intensity of 1/2. As shown in FIG. 2, the light emitted by each of the light-emitting diodes 11 forms a staggered overlapping light-mixing region, and in each of the light-mixing regions, the mixed light of the mixed light of the 200931129 light region is added, and After a mixed light distance ,, a light mixing unit completes the light mixing, that is, after the light mixing distance X, each of the light mixing regions has three primary colors of red, green, and blue. The mixed light distance X is in accordance with the following formula:
X tan D/2 sm arcsin ηX tan D/2 sm arcsin η
其中，D係為一周期距離，即混光單元中第一個光源 到下一個混光單元中第一個光源之距離，於此指兩個相鄰 之混光單元之紅光二極體111之距離；η係指導光板12之 折射率。 由上式可知，混光距離X係與周期距離D成正比，於 此，周期距離D係等於四倍的各發光二極體11間距d。 雖然藉由混光可使點光源變成面光源，但若是混光距 離愈大，相對地所需多餘的不適用區域面積（非顯示區面 積）就愈大，整個背光模組之體積也會愈大，不僅會增加 材料成本，大體積亦會降低產品的競爭力，或者，在不增 加非顯示區面積（代表背光模組整體體積）的情況下就需 減少用於顯示區域的面積，也會降低產品的性能。另外， 請參照圖3所示，若混光距離X越大，則液晶顯示裝置或 模組之外框17亦需要加寬，以遮掩導光板12中混光尚未 完成之不適用區域（圖中點狀部分），如此一來，不僅增 加外框17的材料成本，且會更增加產品或顯示裝置的重 200931129 因此，如何提供一種侧光式背光模組、液晶顯示模組 及液晶顯示裝置，能縮短混光距離，以減少產品體積、降 低材料成本並避免顯示區域面積的減少，進而提升整體效 能，實為當前重要課題之一。 【發明内容】 有鑑於上述課題，本發明之目的為提供一種能縮短混 光距離，以減少產品體積、降低材料成本以及避免顯示區 ® 域面積的減少之侧光式背光模組、液晶顯示模組及液晶顯 示裝置。 為達上述目的，依本發明之一種側光式背光模組包含 一導光板及複數混光單元。導光板係具有一入光面，各混 光單元係具有一第一光源、一第二光源及一第三光源，其 中第一光源、第二光源及第三光源彼此係發出不同色光。 混光單元係面對入光面設置，且第一光源、第二光源及第 三光源係設置成至少兩列。Wherein D is a period distance, that is, the distance from the first source in the light mixing unit to the first source in the next light mixing unit, where the red LEDs 111 of the two adjacent light mixing units are The distance η guides the refractive index of the light plate 12. As can be seen from the above equation, the mixed light distance X is proportional to the periodic distance D, and thus the periodic distance D is equal to four times the pitch d of each of the light-emitting diodes 11. Although the point light source can be turned into a surface light source by mixing light, if the mixing distance is larger, the larger unnecessary area (non-display area) required for the opposite is larger, and the volume of the entire backlight module is increased. Large, not only will increase the cost of materials, large size will also reduce the competitiveness of the product, or, without increasing the non-display area (representing the overall volume of the backlight module), it is necessary to reduce the area used for the display area, Reduce product performance. In addition, as shown in FIG. 3, if the light mixing distance X is larger, the liquid crystal display device or the module outer frame 17 also needs to be widened to cover the unsuitable region in the light guide plate 12 where the light mixing has not been completed (in the figure). The dot portion), in this way, not only increases the material cost of the outer frame 17, but also increases the weight of the product or display device. 200931129 Therefore, how to provide an edge-lit backlight module, a liquid crystal display module and a liquid crystal display device, It is one of the current important topics to shorten the mixing distance, reduce the product volume, reduce the material cost, and avoid the reduction of the display area. SUMMARY OF THE INVENTION In view of the above problems, an object of the present invention is to provide an edge-lit backlight module and a liquid crystal display module capable of shortening a light-mixing distance, reducing product volume, reducing material cost, and avoiding reduction of a display area® domain area. Group and liquid crystal display device. To achieve the above objective, an edge-lit backlight module according to the present invention comprises a light guide plate and a plurality of light mixing units. The light guide plate has a light incident surface, and each of the light mixing units has a first light source, a second light source and a third light source, wherein the first light source, the second light source and the third light source emit different colors of light to each other. The light mixing unit is disposed facing the light incident surface, and the first light source, the second light source, and the third light source are disposed in at least two columns.
Q 為達上述目的，依本發明之一種液晶顯示模組包含一 側光式背光模組及一液晶顯示面板。其中，側光式背光模 組係具有一導光板及複數混光單元，導光板具有一入光 面，各混光單元係具有一第一光源、一第二光源及一第三 光源，其中第一光源、第二光源及第三光源彼此係發出不 同色光。混光單元係面對入光面設置，且第一光源、第二 光源及第三光源係設置成至少兩列。液晶顯示面板係鄰設 於侧光式背光模組。 200931129 為達上述目的，依本發明之一種液晶顯示裝置包含一 侧光式背光模組、一液晶顯示面板及一殼體。其中，侧光 式背光模組係具有一導光板及複數混光單元，導光板具有 一入光面，各混光單元係具有一第一光源、一第二光源及 一第三光源，其中第一光源、第二光源及第三光源彼此係 發出不同色光。混光單元係面對入光面設置，且第一光 源、第二光源及第三光源係設置成至少兩列。液晶顯示面 板係鄰設於侧光式背光模組，且側光式背光模組及液晶顯 〇示面板係設置於殼體内。 承上所述，因依本發明之一種侧光式背光模組、液晶 顯示模組及液晶顯示裝置具有複數混光單元，且混光單元 係面對導光板之入光面設置成至少兩列。與習知技術相 較，原本設置成直線式一列之混光單元之複數個光源，現 在設置成至少兩列，以縮短周期距離。若以具有四個光源 且設置成兩列的混光單元為例，則周期距離為二倍的光源 間距（2d)，即較習知技術（4d)縮短一半，又混光距離In order to achieve the above object, a liquid crystal display module according to the present invention comprises an edge light backlight module and a liquid crystal display panel. The sidelight type backlight module has a light guide plate and a plurality of light mixing units, the light guide plate has a light incident surface, and each light mixing unit has a first light source, a second light source and a third light source, wherein A light source, a second light source, and a third light source emit different colors of light to each other. The light mixing unit is disposed facing the light incident surface, and the first light source, the second light source, and the third light source are disposed in at least two columns. The liquid crystal display panel is adjacent to the edge-lit backlight module. In order to achieve the above object, a liquid crystal display device according to the present invention comprises an edge-lit backlight module, a liquid crystal display panel and a casing. The sidelight type backlight module has a light guide plate and a plurality of light mixing units, the light guide plate has a light incident surface, and each light mixing unit has a first light source, a second light source and a third light source, wherein A light source, a second light source, and a third light source emit different colors of light to each other. The light mixing unit is disposed facing the light incident surface, and the first light source, the second light source, and the third light source are disposed in at least two columns. The liquid crystal display panel is disposed adjacent to the edge light type backlight module, and the edge light type backlight module and the liquid crystal display panel are disposed in the housing. According to the present invention, a sidelight type backlight module, a liquid crystal display module, and a liquid crystal display device according to the present invention have a plurality of light mixing units, and the light mixing unit is disposed in at least two columns facing the light incident surface of the light guide plate. . In comparison with the prior art, a plurality of light sources originally arranged in a linear array of light mixing units are now arranged in at least two columns to shorten the cycle distance. If a light mixing unit with four light sources and two columns is taken as an example, the distance between the light sources with a periodic distance of two times (2d) is half of that of the prior art (4d), and the light mixing distance is further reduced.
Q 與周期距離成正比，縮短了周期距離進而也縮短了混光距 離。因此，本發明能有效縮短混光距離，而減少侧光式背 光模組之產品體積、降低材料成本以及避免顯示區域面積 的減少。 【實施方式】 以下將參照相關圖式，說明依本發明較佳實施例之一 種側光式背光模組、液晶顯示模組及液晶顯示裝置。 200931129 首先，請參照圖4至圖6所示，以說明本發明較佳實 施例之一種侧光式背光模組2。 侧光式背光模組2係包含一導光板21及複數混光單 元22。其中，導光板21係具有一入光面211，各混光單 元22係面對入光面211設置。 請參照圖5A所示，在本實施例之一態樣中，各混光 單元22具有第一光源221、第二光源222及第三光源223, 並且第一光源221、第二光源222及第三光源223係設置 〇成至少兩列，在本態樣中，係以兩列為例。此外，電路板 23係實質平行於入光面211設置，且各光源至入光面211 之投影距離（即光源之發光點與入光面211之最短距離） 係實質相同，第一光源221及第二光源222係位於不同 列。在各混光單元22中，第一光源221、第二光源222及 第三光源223所發出之光線係混合成白光，例如第一光源 221、第二光源222及第三光源223所發出之光線係為三 原色光。圖5A中係以第一光源221、第二光源222及第三 〇 光源223所發出之光線係為紅、藍及綠的三原色光為例。 此外，在本態樣中，各混光單元22之第一光源221、 第二光源222及第三光源223之數量比則如同習知技術所 需的各色比例為1 : 1 : 2，於此，第一光源221係發出紅 光，第二光源222係發出藍光，第三光源223係發出綠光， 即混光單元22係具有一個紅光光源、一個藍光光源及二 個綠光光源，且各混光單元22形成一個二乘二之光源矩 200931129 如圖5A所示，在本態樣中，紅光的光源與藍光的光 源係呈垂直方向上的排列，故人眼（使用者或觀察者）若 自背光模組垂直上方觀測’在第一光源221與第二光源222 這個位置人眼所感受的就是以紅光與藍光先進行混合後 的紫光，此乃導光板21的功能即如習知技術所述有將侧 邊的入射光線向上射出的功能，如此一來，在人眼觀察方 向上各光早元22成為紫光與綠光交替排列的光源，各 .混光單元22的周期距離D係等於二倍之光源間距（水平 〇的間距）d、即2d。若與相同光源間距d設置的習知技術 (紅色或藍色的發光二極體之周期距離D係為4d)，相 較’周期距離D縮短成二分之一 ’又混光距離X與周期距 離D成正比，所以本態樣之混光距離X理論上亦較習知縮 短為1/2。 此外，值得一提的是，對各混光單元22而言，並不 限定第一光源221、第二光源2‘22及第三光源223所發出 的原色光源為何種，只要能混合成背光模組所需的色彩光 Ό 源、例如一白光，亦不脫本實施例範圍。 詳請參照圖5B所示，在本實施例另一態樣中，侧光 式背光模組2與前述之態樣最主要的差異在於具有至少兩 種不同的混光單元22及22'，在混光單元22'中，第一光源 221與第二光源222的設置位置與混光單元22相反。本態 捧之侧光式背光模組2的其他設置參數可如同前述之態 樣，故在此不再贅述。同樣地，本態樣之混光距離X理論 上亦可較習知縮短為1/2。另外，本實施例之側光式背光 11 200931129 模組2亦可如圖5C所減有至少兩鱗續㈣之混光單 兀22’之態樣，同樣地，本態樣之混光距離X理論上亦可 較習知縮短為1/2。當然、，本實施例之態樣不僅：於^述 三種，對各混光單元而言，亦並不限定第〜光源221、第 二光源222 A第三光源223在各混光單元之相對位置，例 如第三光源223可水平地設置於同一列，而第一光源22卜 第二光源222可皆水平地設置於另-列。由於本實施例各 光源採用原色光種類及設置其排列變化實為繁多，在此不 ❹再——牧舉。 在此需指出的是’本實施例為簡化說明圖示，所以使 第一光源221、第二光源222及第三光源223之間的設置 位置對齊’事實上’第一列與第二列光源間也可猶微錯位 排置（Misalignment Arrangement)，由於各混光單元之周 期距離D仍維持為2倍的單列上光源間距d、故仍可有效 縮短混光距離X為習知約1/2。另外，混光單元22、22, ❹之態樣僅為舉例，並不限定於此，亦可以其他數目之光源 形成一混光單元，並且本實施例可分別使用混光單元22 或混光單元22'，亦可混合使用。此外，本實施例之第一 光源221、第二光源222及第三光源223係分別選自一發 光二極體或一有機電激發光元件（Organic Electro-Luminescent Device, OELD)。 請參照圖6所示，侧光式背光模組2更可包含一光學 薄膜組24，其係設置於導光板21之一出光面212，且至 少包含一擴散片或一稜鏡片，以促進出射光線之光學特 12 200931129 性，如均勻性及集中性（即亮度）等等。另外，側光式背 光模組2更可包含一背板25，並且導光板21係設置於背 板25中，背板25上並設置有一反射片（未圖示）或者背 板25之上表面即塗覆有反射材質而具有光反射性。 接著，請參照圖7所示，以說明本發明較佳實施例之 一種液晶顯示模組4。 本實施例中，液晶顯示模組4係包含一侧光式背光模 . 組2、一液晶顯示面板3及一外框41。其中，側光式背光 〇模組2已於前述實施例詳述，於此不再贅述。另外，液晶 顯示面板3係鄰設於侧光式背光模組2，一般而言，液晶 顯示面板3係包含一第一基板、一第二基板、以及一夾設 於第一基板及第二基板之間之液晶層，此外，液晶顯示面 板3更具有驅動電路（未圖示），以控制驅動液晶層中液 晶分子的旋轉角度。 請參照圖8所示，本發明較佳實施例之一種液晶顯示 裝置5係包含一液晶顯示模組4及一包含前殼體51及後Q is proportional to the cycle distance, shortening the cycle distance and thus shortening the mixing distance. Therefore, the present invention can effectively shorten the light mixing distance, reduce the product volume of the edge light type backlight module, reduce the material cost, and avoid the reduction of the display area. [Embodiment] Hereinafter, an edge-lit backlight module, a liquid crystal display module, and a liquid crystal display device according to a preferred embodiment of the present invention will be described with reference to the accompanying drawings. First, please refer to FIG. 4 to FIG. 6 for explaining an edge-lit backlight module 2 according to a preferred embodiment of the present invention. The edge-lit backlight module 2 includes a light guide plate 21 and a plurality of light mixing units 22. The light guide plate 21 has a light incident surface 211, and each of the light mixing units 22 is disposed facing the light incident surface 211. As shown in FIG. 5A, in an aspect of the embodiment, each light mixing unit 22 has a first light source 221, a second light source 222, and a third light source 223, and the first light source 221, the second light source 222, and the second The three light sources 223 are arranged in at least two columns. In this aspect, two columns are taken as an example. In addition, the circuit board 23 is substantially parallel to the light incident surface 211, and the projection distance of each light source to the light incident surface 211 (ie, the shortest distance between the light emitting point of the light source and the light incident surface 211) is substantially the same, and the first light source 221 and The second light source 222 is located in a different column. In each of the light mixing units 22, the light emitted by the first light source 221, the second light source 222, and the third light source 223 is mixed into white light, for example, the light emitted by the first light source 221, the second light source 222, and the third light source 223. It is made up of three primary colors. In Fig. 5A, the light emitted by the first light source 221, the second light source 222, and the third light source 223 is exemplified by three primary colors of red, blue, and green. In addition, in this aspect, the ratio of the number of the first light source 221, the second light source 222, and the third light source 223 of each light mixing unit 22 is 1 : 1 : 2 as required by the prior art. The first light source 221 emits red light, the second light source 222 emits blue light, and the third light source 223 emits green light, that is, the light mixing unit 22 has a red light source, a blue light source and two green light sources, and each The light mixing unit 22 forms a two-by-two light source moment 200931129. As shown in FIG. 5A, in this aspect, the red light source and the blue light source are arranged in a vertical direction, so that the human eye (user or observer) Observing from the vertical direction of the backlight module, 'the first light source 221 and the second light source 222 are perceived by the human eye as the purple light mixed with red light and blue light first. This is the function of the light guide plate 21 as a conventional technique. The function of injecting the incident light rays on the side upwards is such that each of the light elements 22 in the direction of the human eye becomes a light source in which the violet light and the green light are alternately arranged, and the period distance D of each light mixing unit 22 is Equal to twice the distance of the light source Horizontal square pitch) d, i.e., 2d. If the conventional technique (the red or blue light-emitting diode has a periodic distance D of 4d) set to the same light source spacing d, the 'cycle distance D is shortened to one-half' and the mixed light distance X and period The distance D is proportional, so the mixed light distance X of this aspect is theoretically shortened to 1/2. In addition, it is worth mentioning that, for each light mixing unit 22, the primary light source emitted by the first light source 221, the second light source 2'22, and the third light source 223 is not limited, as long as it can be mixed into a backlight mode. The desired color pupil source, such as a white light, does not depart from the scope of this embodiment. For details, please refer to FIG. 5B. In another aspect of the embodiment, the main difference between the edge-lit backlight module 2 and the foregoing aspect is that there are at least two different light mixing units 22 and 22'. In the light mixing unit 22', the first light source 221 and the second light source 222 are disposed opposite to the light mixing unit 22. Other setting parameters of the edge-lit backlight module 2 of this state can be the same as the foregoing, and therefore will not be described herein. Similarly, the mixed light distance X of this aspect can theoretically be shortened to 1/2 as compared with the conventional one. In addition, the edge-lit backlight 11 200931129 module 2 of the present embodiment may also have at least two scales (four) of the light mixing unit 22' as shown in FIG. 5C. Similarly, the mixed light distance X theory of the present aspect. It can also be shortened to 1/2 as compared with the conventional one. Of course, the aspect of the present embodiment is not limited to three types. For each light mixing unit, the relative positions of the third light source 223 and the second light source 223 in the light mixing units are not limited. For example, the third light source 223 may be horizontally disposed in the same column, and the first light source 22 and the second light source 222 may be horizontally disposed in another column. Since the light source of the present embodiment adopts the type of the primary light and the arrangement of the light source is varied, it is no longer a matter of grazing. It should be noted here that 'this embodiment is for simplifying the illustration, so that the arrangement position between the first light source 221, the second light source 222 and the third light source 223 is aligned with the 'de facto' first column and the second column light source. Misalignment Arrangement can also be used. Since the period D of each light mixing unit is still maintained at twice the distance d between the light sources on a single column, the light mixing distance X can be effectively shortened by about 1/2. . In addition, the aspect of the light mixing unit 22, 22, ❹ is only an example, and is not limited thereto, and another number of light sources may be used to form a light mixing unit, and the light mixing unit 22 or the light mixing unit may be separately used in this embodiment. 22', can also be mixed. In addition, the first light source 221, the second light source 222, and the third light source 223 of the embodiment are respectively selected from a light emitting diode or an organic electro-luminescence device (OELD). As shown in FIG. 6 , the edge-lit backlight module 2 further includes an optical film set 24 disposed on one of the light-emitting surfaces 212 of the light guide plate 21 and including at least one diffusion sheet or a plurality of sheets to facilitate the emission. Optical optics 12 200931129 Sex, such as uniformity and concentration (ie brightness) and so on. In addition, the edge-lit backlight module 2 further includes a back plate 25, and the light guide plate 21 is disposed in the back plate 25. The back plate 25 is provided with a reflective sheet (not shown) or the upper surface of the back plate 25. That is, it is coated with a reflective material and has light reflectivity. Next, please refer to FIG. 7 for explaining a liquid crystal display module 4 of a preferred embodiment of the present invention. In this embodiment, the liquid crystal display module 4 includes a side optical backlight module, a group 2, a liquid crystal display panel 3, and an outer frame 41. The side-lit backlight module 2 has been described in detail in the foregoing embodiments, and details are not described herein again. In addition, the liquid crystal display panel 3 is disposed adjacent to the edge-lit backlight module 2. Generally, the liquid crystal display panel 3 includes a first substrate, a second substrate, and a first substrate and a second substrate. In addition, the liquid crystal display panel 3 further has a driving circuit (not shown) for controlling the rotation angle of the liquid crystal molecules in the liquid crystal layer. Referring to FIG. 8 , a liquid crystal display device 5 according to a preferred embodiment of the present invention includes a liquid crystal display module 4 and a front housing 51 and a rear portion thereof.
Q 殼體52的殼體。其中，前殼體51及後殼體52係形成一 容置空間，液晶顯示模組4係設置於殼體之容置空間内。 另外，液晶顯示裝置5更可包含一電源板及一訊號處理板 (圖未顯示），其係設置於殼體内，用以與外部供應電源 連接以及影像訊號處理。此外，液晶顯示裝置5更可包含 一支架（圖未顯示），其係與殼體連結並用以支撐。 請參照圖9所示，由於本較佳實施例之液晶顯示模組 或裝置係將混光單元22 (或22')設置成兩列，以縮短周 13 200931129 期距離D (如圖5A、圖5B或圖5C所示），而混光距離X 與周期距離D成正比，因此本實施例之混光距離X'與習知 技術將光源設置成一列而產生之混光距離X比較，本實施 例可有效縮短混光距離X’，使混光距離X'小於習知之混光 距離X，因此可減少外框41之寬度，進而亦可避免顯示區 域的面積減少，有利於液晶顯示模組4或液晶顯示裝置5 整體體積以及成本的減少。 . 綜上所述，因依本發明之一種侧光式背光模組、液晶 ® 顯示模組及液晶顯示裝置具有複數混光單元，且混光單元 係面對導光板之入光面設置成至少兩列。與習知技術相 較，原本設置成直線式一列之混光單元之各色光源，現在 矩陣式地設置成至少兩列，以縮短周期距離。若以兩列為 例，則周期距離為二倍的光源間距（2d)，即較習知技術 (4d)縮短一半，又混光距離與周期距離成正比，縮短了 周期距離進而也縮短了混光距離。因此，本發明能有效縮 _ 短混光距離，而減少側光式背光模組之產品體積、降低材 〇 料成本以及避免顯示區域面積的減少。 以上所述僅為舉例性，而非為限制性者。任何未脫離 本發明之精神與範疇，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。 【圖式簡单說明】 圖1為一種習知背光模組之一示意圖； 圖2為圖1之背光模組進行混光之一示意圖； 14 200931129 圖3為具有圖1之背光模組之液晶顯示裝置之一侧視 圖； 圖4為依據本發明較佳實施例之一種側光式背光模組 之一示意圖； 圖5A為依據本發明較佳實施例之一種侧光式背光模 組之混光單元態樣之一示意圖； 圖5B為依據本發明較佳實施例之一種側光式背光模 . 組之另一混光單元態樣之一示意圖； ® 圖5C為依據本發明較佳實施例之一種侧光式背光模 組之再另一混光單元態樣之一示意圖； 圖6為依據本發明較佳實施例之一種侧光式背光模組 之另一示意圖； 圖7為依據本發明較佳實施例之一種液晶顯示模組之 一示意圖； 圖8為依據本發明較佳實施例之一種液晶顯示裝置之 一示意圖；以及 ❹ 圖9為依據本發明較佳實施例之一種液晶顯示模組或 裝置之一局部側視圖。 【主要元件符號說明】 I :背光模組 II :發光二極體 III :紅光二極體 112 :綠光二極體 15 200931129 113 :藍光二極體 12、21 :導光板 121、 211 :入光面 122、 212 :出光面 13 :光擴散片 14 :稜鏡片 .15、25 :背板 16、23 :電路板 ❹17、41 :外框 2 :侧光式背光模組 22、22':混光單元 221 :第一光源 222 :第二光源 223 :第三光源 24 :光學薄膜組 3 .液晶顯不面板 ❹ 4.液晶顯不核組 5 :液晶顯示裝置 51 :前殼體 52 :後殼體 d :間距 D :周期距離 X、X1 :混光距離 a ··角度 16Q The housing of the housing 52. The front housing 51 and the rear housing 52 form an accommodating space, and the liquid crystal display module 4 is disposed in the accommodating space of the housing. In addition, the liquid crystal display device 5 further includes a power board and a signal processing board (not shown) disposed in the housing for connection with an external power supply and image signal processing. In addition, the liquid crystal display device 5 further includes a bracket (not shown) coupled to the housing for support. Referring to FIG. 9, the liquid crystal display module or device of the preferred embodiment sets the light mixing unit 22 (or 22') in two columns to shorten the distance D of the week 13 200931129 (as shown in FIG. 5A and FIG. 5B or FIG. 5C), and the light mixing distance X is proportional to the periodic distance D. Therefore, the light mixing distance X′ of the present embodiment is compared with the light mixing distance X generated by a conventional technique in which the light sources are arranged in a row. For example, the light mixing distance X′ can be effectively shortened, so that the light mixing distance X′ is smaller than the conventional light mixing distance X, so that the width of the outer frame 41 can be reduced, and the area of the display area can be prevented from being reduced, which is advantageous for the liquid crystal display module 4 . Or the overall volume and cost of the liquid crystal display device 5 is reduced. In summary, the edge-lit backlight module, the liquid crystal® display module, and the liquid crystal display device according to the present invention have a plurality of light mixing units, and the light mixing unit is disposed at least facing the light incident surface of the light guide plate. Two columns. In comparison with the prior art, the respective color light sources originally arranged in a linear array of light mixing units are now arranged in a matrix of at least two columns to shorten the cycle distance. If two columns are taken as an example, the distance between the light sources with a periodic distance of two times (2d) is half of that of the prior art (4d), and the mixed light distance is proportional to the periodic distance, shortening the cycle distance and shortening the mixing. Light distance. Therefore, the present invention can effectively reduce the short light mixing distance, reduce the product volume of the edge light type backlight module, reduce the material cost, and avoid the reduction of the display area. The above is intended to be illustrative only and not limiting. Any equivalent modifications or alterations to the spirit and scope of the present invention are intended to be included in the scope of the appended claims. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic diagram of a conventional backlight module; FIG. 2 is a schematic diagram of a backlight module of FIG. 1 for mixing light; 14 200931129 FIG. 3 is a liquid crystal having the backlight module of FIG. FIG. 4 is a schematic diagram of a side-lit backlight module according to a preferred embodiment of the present invention; FIG. 5A is a light-mixing method of an edge-lit backlight module according to a preferred embodiment of the present invention; FIG. 5B is a schematic diagram of another light mixing unit aspect of an edge-lit backlight module according to a preferred embodiment of the present invention; FIG. 5C is a schematic view of a preferred embodiment of the present invention. FIG. 6 is a schematic diagram of another edge-lighting backlight module according to a preferred embodiment of the present invention; FIG. 7 is a schematic view of another edge-lighting backlight module according to a preferred embodiment of the present invention; FIG. 8 is a schematic diagram of a liquid crystal display device according to a preferred embodiment of the present invention; and FIG. 9 is a liquid crystal display module according to a preferred embodiment of the present invention; Or one of the devices Partial side view. [Description of main component symbols] I: backlight module II: light-emitting diode III: red diode 112: green diode 15 200931129 113: blue diode 12, 21: light guide plate 121, 211: light Surfaces 122, 212: Light-emitting surface 13: Light-diffusing sheet 14: Sepals. 15, 25: Back sheets 16, 23: Circuit boards 、 17, 41: Frame 2: Side-light backlight modules 22, 22': Mixed light Unit 221: first light source 222: second light source 223: third light source 24: optical film group 3. liquid crystal display panel ❹ 4. liquid crystal display core group 5: liquid crystal display device 51: front case 52: rear case d : spacing D : period distance X, X1 : mixing distance a · · angle 16