1336415 九、發明說明 【發明所屬之技術領域】 用’且特別是有關 置上之應用。 本發明是有關於一種背光模組及其應 於一種直下式背光模組及其在液晶顯示裝 【先前技術】 ' 背光模組係一種可提供產品背面光源之組件，目前普遍 應用在各種資訊及通訊等一般消費產品上， ’成日日顯不 ·' 15、幻燈片看片箱、數位相機、個人數位助理（PDA)、監視 器和筆記型電腦等產品。 & 因此，目前市場上常見之液晶顯示裝置大都為背光型液 晶顯示器。在此類的液晶顯示裝置中，一般主要係由前端之 _ 液晶顯示面板以及後端之背光模組所組成。因此，背光模組 為提供液晶顯示裝置背面光源之光學組件，為液晶顯示裝置 相當關鍵的組件之一。一般，依燈管擺設位置的不同，背光 模組主要可分成直下式以及側向入光式，其中直下式背光模 • 組之燈管係設在顯示面正下方之燈箱底面上，而侧向入光式 背光模組之燈管則係設置在背板之内側面。 請參照第1圖’其係繪示傳統直下式背光模組之剖面以 及其對應之輝度分布示意圖。背光模組100主要包括燈箱 102、數個燈管104、以及光學薄膜組，其中這些燈管1〇4 ’ 狄於燈箱102中，而光學薄膜組則設於燈管104與燈箱102 之上。此背光模組100之光學薄膜組包括一擴散板106以及 三個光學膜片1〇8、11〇與112,其中光學膜片1〇8、11()與 1 1 2係依序疊置於擴散板1 06上。在目前之背光模組1 〇〇 1336415 中，燈管104係以等距方放妯丨 寸万式排列在燈箱102之底面上方，亦 即所有燈管1 04間之距離相等。 請參看第1圖上半部之楗疮八士 _ 夂輝度分布不意圖，根據上述之燈1336415 IX. DESCRIPTION OF THE INVENTION [Technical field to which the invention pertains] Uses and in particular relates to applications. The present invention relates to a backlight module and a direct-lit backlight module thereof, and a liquid crystal display device [Prior Art] A backlight module is a component that can provide a backlight source of a product, and is currently widely used in various information and On general consumer products such as communication, 'Days of the Day is not good' 15. Slideshow boxes, digital cameras, personal digital assistants (PDAs), monitors and notebook computers. & Therefore, most of the liquid crystal display devices currently on the market are backlight type liquid crystal displays. In such a liquid crystal display device, it is generally composed mainly of a front-end liquid crystal display panel and a back-end backlight module. Therefore, the backlight module is an optical component that provides a backlight source of the liquid crystal display device, and is one of the most critical components of the liquid crystal display device. Generally, depending on the position of the lamp, the backlight module can be mainly divided into a direct type and a side-into-light type, wherein the direct type backlight module and the group of tubes are disposed on the bottom surface of the light box directly below the display surface, and the lateral direction The light tube of the light-in backlight module is disposed on the inner side of the back plate. Please refer to FIG. 1 which shows a cross section of a conventional direct type backlight module and a corresponding luminance distribution diagram thereof. The backlight module 100 mainly includes a light box 102, a plurality of tubes 104, and an optical film group, wherein the tubes 1〇4' are integrated in the light box 102, and the optical film group is disposed on the tube 104 and the light box 102. The optical film set of the backlight module 100 includes a diffusion plate 106 and three optical films 1〇8, 11〇 and 112, wherein the optical films 1〇8, 11() and 1 1 2 are sequentially stacked. The diffusion plate is on the 06. In the current backlight module 1 〇〇 1336415, the lamps 104 are arranged in an equidistant manner above the bottom surface of the light box 102, that is, the distance between all the lamps 104 is equal. Please refer to the upper part of the first half of Figure 1 for the acne _ 夂 夂 luminance distribution is not intended, according to the above lights
S配置所對應之背光模組W … υ的輝度曲線118中，可得知燈 官104所在之處的相對輝度較高，而相鄰二燈管1〇4的中門 區域的相對輝度較低。因此，對料者而言，财慮背光模 組100中設有燈f104之相對高輝度處以及相對低輝度處之 間的輝度差異不能過大，-旦相對高輝度與低輝度之間的輝 度差異過大，將會影響人眼之視覺品味。 在第1圖中’人眼輝度模糊區域114為人眼無法清楚辨 別高低輝度的區域，其中在中央1116處係代表背光模组 100之中央點的輝度，一般通常會以中央區116之輝度作為 一項產品規格的檢驗。因此，在整個發光區域中，無論相對 高輝度或相對低輝度區，只要係分布在人眼輝度模糊區域 114内，從人眼之視覺角度便可稱為品味無虞之設計。 I 【發明内容】 因此，本發明之目的就是在提供一種背光模組，可在兼 顧人眼視覺品味與產品規格下，減少燈管等條狀發光裝置的 使用量。故，不僅可降低生產成本，更可充分利用資源。 • 本發明之另一目的是在提供一種背光模組，可在人類視 • 覺敏感範圍内拉大兩相鄰條狀發光裝置之間的距離，而具有 - 非等距排列之條狀發光裝置，因此可有效提高條狀發光裝置 之利用率’進一步提升產品之經濟效益。 本發明之又一目的是在提供一種液晶顯示裝置，可根據 丄川0415 品特性，且在不影響視覺品味下，進行背光模組之條狀發 光裝置的設置’因此可充分㈣條狀發光裝置之效能減少 、條狀發光裝置的使用，並可進—步達到省能的效有效提 • 升產品之市場競爭力。 '.:據々本發明之上述目的’提出-種背光模組，至少包 -括燈耘，至少三條狀發光裝置，設於燈箱中，其中這些 、條狀發光裝置以非等距方式排列；以及一光學薄膜組，設； 上述條狀發光裝置與燈箱之上。 •- 丨照本發明-較佳實施例’上述之條狀發光裝置係呈對 稱排歹丨且條狀發光裝置之排列密度由中心朝外遞減。依照 本發明另一較佳實施例，上述之條狀發光裝置與光學薄膜組 之間的距離不盡相等。 根據本發明之目的，提出一種液晶顯示裝置，至少包括 一背光模組、以及—液晶顯示面板設於背光模組上。此背光 模 '’且至）包括.一燈箱；至少三條狀發光裝置設於此燈箱 中i其中這些條狀發光裝置係以非等距方式排列；以及一光 • 學薄膜組’設於上述條狀發光裝置與燈箱之上。 依照本發明一較佳實施例，上述之條狀發光裝置的排列 密度隨背光模組之溫度分佈的上升而降低，亦即在背光模組 之熱空氣聚集區設置較少之條狀發光裝置，而在背光模組之 非熱空氣聚集區設置較多之條狀發光裝置。 • 藉由本發明之應用，可在兼顧人類之視覺品味與產品規 -格下’根據產品特性，以非等距的方式設置條狀發光裝置， 並減少條狀發光裝置之使用數量。因此，可大幅地提升條狀 發光裝置效能之利用率，更可達到降低液晶顯示裝置之生產 1336415 成本的目的。 【實施方式】 本發明揭露一種背光模組及其應用，其中此背光模組具 ·-有非等距排列之條狀發光裝置，且使用了較少之條狀發光裝 _置。因此，不僅可降低產品成本，更可具有省能環保之優勢。 為了使本發明之敘述更加詳盡與完備，可參照下列描述並配 '合第2圖至第7圖之圖示。 籲- 請參照第2圖，其繪示依照本發明一較佳實施例的一種 背光模組之剖面以及其對應之輝度分布示意圖。背光模組 200係一直下式背光模組’主要係由燈箱2〇2、數個條狀發 光裝置204以及光學薄膜組2 1 4所組成。燈箱202之内側壁 與底面通常會貼設或塗覆反射層，以將條狀發光裝置2〇4 射向燈箱202内之光源朝顯示面反射。條狀發光裝置2〇4 設於燈箱202之底面上且位於燈箱2〇2之中，其中條狀發光 裝置204可採用冷陰極燈管或發光二極體。光學薄膜組214 ^ 可依實際產品需求而調整其光學膜片之組合，亦可僅由一光 學膜片所組成。在本實施例中，光學薄膜組214包括光學膜 片206、208、210與212。其中，這些光學膜片2〇6、2〇8、 210與212可為增亮膜（BEF)、偏光反射片（DBEF)擴散片、 • 或擴散板》 • 在本實施例中，係在確定一般適用者之視覺能力後，而 •在不影響人眼之視覺品味，並兼顧產品規格下，適度減少條 狀發光裝置204之使用量。因此’條狀發光裝置2〇4之排列 在背光模組200之中央部位較為密集，藉以使決定產品規格 1336415 之中央區218的輝度能與習知設計之中央區域的輝度相 當’以確保背光模組200能保有相同之產品規格。另—方 面’條狀發光裝置204之排列密集度由背光模組2〇〇之中央 部位朝兩側遞減，越靠近背光模組200兩側外圍部分的排列 · 越疏，但仍在人類視覺無法分辨輝度差異範圍内做設計調 -整’而使整個背光模組200之輝度曲線220仍位於人眼無法 •清楚辨別高低輝度的人眼輝度模糊區域216内。在本實施例 中’條狀發光裝置204之排列係採對稱但非等距方式，二相 ® 鄰之條狀發光裝置204之間隔從左至右分別為距離Di、D2、 D3、E>4以及D5 ’其中距離D3 < D2= D4 < D丨=D5。在本發明 中，這樣的條狀發光裝置排列設計較佳係將相對輝度控制在 均齊度（Uniformity)不低於75%的程度。 本發明之一特徵為在考量一般適用者之視覺能力後，適 度減少背光模組之條狀發光裝置的使用量，並以不等距排列 方式’來兼顧人眼視覺品味以及產品規格要求。因此，可充 刀利用條狀發光裝置之效能，進一步達到省能以及成本控制 ^ 的目的。 本發明亦可根據產品特性，例如元件所固定之位置分配 • 不對稱或操作時為直立式使用等操作狀況，來排列背光模組 之條狀發光裝置。請參照第3圖，其係繪示依照本發明另一 ’:較佳實施例的一種背光模組之條狀發光裝置分布示意圖。背 .光模組3〇〇同樣屬直下式背光模組，亦至少包括燈箱3〇2、 •數個條狀發光裝置304以及光學薄膜組（未繪示），且這些構 件除條狀發光裝置304排列方式不同於上述背光模組2〇〇 外，其餘裝置可與上述背光模組200之裝置相同，於此不再 丄⑽415 贅述。在本實施例中，條狀發光裝置3〇4之數量至少有三個。 背光模組300在操作時，固定為直立式使用。由於背光 模組300在運轉時會產生熱，再加上熱空氣之密度較低而聚 集在背光模組300上部，因此背光模組_之溫度由下而上 遞增’造成系統溫度的不對稱，如第3圖之溫度分布圖3〇6 所示。然而，不對稱之系統溫度會進一步導致背光模組3〇〇In the luminance curve 118 of the backlight module W υ corresponding to the S configuration, it can be known that the relative luminance of the position where the lamp officer 104 is located is high, and the relative luminance of the middle door region of the adjacent two lamps 1〇4 is low. . Therefore, for the applicant, the difference in luminance between the relatively high luminance and the relatively low luminance of the lamp f104 in the backlight module 100 cannot be excessively large, and the luminance difference between the relatively high luminance and the low luminance is different. Too big will affect the visual taste of the human eye. In the first figure, the human eye luminance blur area 114 is an area where the human eye cannot clearly distinguish the high and low luminances, wherein the central portion 1116 represents the luminance of the central point of the backlight module 100, and generally generally takes the luminance of the central area 116 as Inspection of a product specification. Therefore, in the entire light-emitting region, regardless of the relatively high luminance or relatively low luminance region, as long as it is distributed in the human eye luminance blur region 114, it can be called a flawless design from the perspective of the human eye. SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a backlight module capable of reducing the amount of use of a strip-shaped light-emitting device such as a lamp tube while taking into consideration human visual taste and product specifications. Therefore, not only can the production cost be reduced, but resources can be fully utilized. • Another object of the present invention is to provide a backlight module capable of widening the distance between two adjacent strip-shaped light-emitting devices within a human visual sensitivity range, and having a strip-shaped light-emitting device that is non-equidistantly arranged Therefore, the utilization rate of the strip-shaped light-emitting device can be effectively improved to further improve the economic efficiency of the product. Another object of the present invention is to provide a liquid crystal display device capable of performing the arrangement of a strip-shaped light-emitting device of a backlight module according to the characteristics of the Sasakawa 0415 and without affecting the visual taste. Therefore, the (four) strip-shaped light-emitting device can be sufficiently The performance is reduced, the use of strip light-emitting devices, and the energy-saving effect of the energy-saving products can be improved step by step. According to the above object of the present invention, a backlight module is provided, which comprises at least a lamp housing, at least three strips of light-emitting devices, which are arranged in a light box, wherein the strip-shaped light-emitting devices are arranged in a non-equidistant manner; And an optical film set, disposed above the strip light emitting device and the light box. - The preferred strip light-emitting device is symmetrical and the arrangement density of the strip-shaped light-emitting device is decreased from the center toward the outside. According to another preferred embodiment of the present invention, the distance between the strip-shaped light-emitting device and the optical film group is not equal. According to an object of the present invention, a liquid crystal display device is provided, comprising at least a backlight module, and a liquid crystal display panel disposed on the backlight module. The backlight module includes a light box; at least three strips of light emitting devices are disposed in the light box; wherein the strip light emitting devices are arranged in a non-equidistant manner; and an optical film group is disposed on the strip Above the light box and the light box. According to a preferred embodiment of the present invention, the arrangement density of the strip-shaped light-emitting device decreases as the temperature distribution of the backlight module increases, that is, a strip-shaped light-emitting device is disposed in the hot air gathering area of the backlight module. In the non-hot air gathering area of the backlight module, a plurality of strip-shaped light-emitting devices are disposed. • With the application of the present invention, strip-shaped light-emitting devices can be arranged in a non-equidistant manner according to product characteristics, taking into account human visual taste and product specifications, and the number of strip-shaped light-emitting devices used can be reduced. Therefore, the utilization efficiency of the strip light-emitting device can be greatly improved, and the cost of the production of the liquid crystal display device 1336415 can be achieved. [Embodiment] The present invention discloses a backlight module and an application thereof, wherein the backlight module has a strip-shaped light-emitting device that is not equidistantly arranged, and uses less strip-shaped light-emitting devices. Therefore, not only can the product cost be reduced, but also the advantage of energy saving and environmental protection. In order to make the description of the present invention more detailed and complete, reference is made to the following description and the drawings of Figures 2 to 7 are incorporated. Referring to FIG. 2, a cross-sectional view of a backlight module and a corresponding luminance distribution thereof are shown in accordance with a preferred embodiment of the present invention. The backlight module 200 is a direct-type backlight module ‘mainly composed of a light box 2〇2, a plurality of strip-shaped light-emitting devices 204, and an optical film group 2 1 4 . The inner side wall and the bottom surface of the light box 202 are usually provided with or coated with a reflective layer to reflect the light source of the strip light-emitting device 2〇4 in the light box 202 toward the display surface. The strip-shaped light-emitting device 2〇4 is disposed on the bottom surface of the light box 202 and located in the light box 2〇2, wherein the strip-shaped light-emitting device 204 can adopt a cold cathode lamp tube or a light-emitting diode. The optical film set 214 ^ can be adjusted according to the actual product requirements, or it can be composed of only an optical film. In the present embodiment, optical film set 214 includes optical films 206, 208, 210 and 212. Wherein, the optical films 2〇6, 2〇8, 210 and 212 may be a brightness enhancement film (BEF), a polarizing reflection sheet (DBEF) diffusion sheet, or a diffusion plate. • In this embodiment, it is determined Generally, the visual ability of the applicable person is used, and the amount of use of the strip-shaped light-emitting device 204 is moderately reduced without affecting the visual taste of the human eye and taking into consideration the product specifications. Therefore, the arrangement of the strip-shaped light-emitting devices 2〇4 is dense in the central portion of the backlight module 200, so that the luminance of the central region 218 which determines the product specification 1336415 can be equivalent to the luminance of the central region of the conventional design to ensure the backlight mode. Group 200 can maintain the same product specifications. On the other hand, the arrangement intensity of the strip-shaped light-emitting device 204 is reduced from the central portion of the backlight module 2 to the two sides, and the closer to the peripheral portion of the backlight module 200, the more the arrangement is poor, but still in human vision. The brightness adjustment curve 220 of the entire backlight module 200 is still located in the human eye luminance blur area 216 where the human eye cannot (clearly distinguish the high and low luminance). In the present embodiment, the arrangement of the strip-shaped light-emitting devices 204 is symmetric but not equidistant, and the interval between the two-phase® adjacent strip-shaped light-emitting devices 204 is from left to right, respectively, distances Di, D2, D3, E> And D5 'where the distance D3 < D2 = D4 < D丨 = D5. In the present invention, such a strip-shaped light-emitting device array design preferably controls the relative luminance to a degree of uniformity of not less than 75%. One of the features of the present invention is that after considering the visual ability of a general applicator, the amount of use of the strip-shaped light-emitting device of the backlight module is moderately reduced, and the human eye visual taste and product specification requirements are taken into consideration in an unequal arrangement. Therefore, the squeezing knife utilizes the performance of the strip illuminating device to further achieve the purpose of energy saving and cost control. The present invention can also arrange strip light-emitting devices of the backlight module according to product characteristics, such as positional assignment of the components, asymmetry, or operation in an upright manner during operation. Please refer to FIG. 3, which is a schematic diagram showing the distribution of strip light-emitting devices of a backlight module according to another preferred embodiment of the present invention. The backlight module 3 is also a direct-lit backlight module, and also includes at least a light box 3〇2, a plurality of strip-shaped light-emitting devices 304, and an optical film group (not shown), and the components are strip-shaped light-emitting devices. The arrangement of the 304 is different from that of the backlight module 2, and the other devices may be the same as the device of the backlight module 200, and the details are not described herein. In the present embodiment, the number of strip-shaped light-emitting devices 3〇4 is at least three. The backlight module 300 is fixed to be used in an upright position during operation. Since the backlight module 300 generates heat during operation, and the density of the hot air is low and is concentrated on the upper portion of the backlight module 300, the temperature of the backlight module _ is increased from bottom to top, causing asymmetry of the system temperature. As shown in Figure 3, the temperature distribution is shown in Figure 3〇6. However, the asymmetrical system temperature will further lead to the backlight module 3〇〇
之輝度分布不對稱，-般而言’相對溫度較高之區域的輝度 大於相對溫度較低之區域。因此，為均衡溫度分布的不均句 所造成之輝度變化，背光模組遍之條狀發光裝置剔之排 列密度隨著溫度的增加而遞減’亦即在溫度較高之區域將相 鄰之條狀發光裝置間的距離拉大，而在溫度較低之區域則縮 小相鄰之條狀發光裝置間的距離，如第3圖所示。故，在背 光模組300中，條狀發光裝置3〇4之排列密度由上朝下遞增。 本發明之另一特徵在於可配合產品操作特性，來設計條 狀發光裝置之排列密度，而提供具非等距且非對稱排列之條 狀發光裝置的背光模組。 • 本發明另可在條狀發光裝置排列過於疏散或模組厚度 縮小要求下，而引發視覺品味不佳的情況時，利用光學結構 設計來改善背光模組之輝度分布的均勻度。請參照第4圖， 其係繪示依照本發明又一較佳實施例的一種背光模組之裝 -·置剖面示意圖。背光模組400亦至少包括燈箱4〇2、數個條 狀發光裝置404以及光學薄膜組（未繪示），其中這些構件之 裝置大致上與前述之背光模組2〇〇的裝置相同，但背光模組 400更增設了具有至少一山型結構4〇8之山型反射片4〇6。 在此背光模組400中，山型反射片4〇6係貼設在燈箱4〇2 1336415 之底面上。立由，山从 a ，由於山型反射片406上之山型結構408 点提供散射作用，因此山型結構彻可對應設於背光模组 400之輝度矣里如、、 、較大之區域的條狀發光裝置404下，以使背 '光模組400之輝度分布趨於均勻。 -· 凊參照第5圖，其係繪示依照本發明再一較佳實施例的 種身光模組之裝置上視圖。與前述實施例相似，背光模組 主要匕括燈相502、設於燈箱5 02中之數個條狀發光裝 置504以及至少一光學膜片5〇6所組成之光學薄膜組其 籲-中这些構件之裝置大致與前述背光模組2〇〇之裝置相同，但 本實施例另在光學膜片5〇6上設有至少一擴散區5〇8，其中 此擴散區508可利用例如印刷網點、射出成型、壓印、或雷 射加工方式形成在光學膜片5〇6之表面上。在此實施例中， 為了使背光模组500之輝度分布較為均勻，而利用例如印刷 的方式，在條狀發光裝置504上方之光學膜片5〇6的表面上 設置擴散區508。其中，擴散區508之位置可依背光模組5〇〇 之輝度分布而定’ 一般可設在輝度差異較大之區域上，如第 p 5圖所示。 請參照第6圖’其係繪示依照本發明再一較佳實施例的 一種背光模組之裝置剖面示意圖。背光模組6〇〇同樣屬直下 式彦光模組’亦至少包括燈箱602、數個條狀發光裝置 604a、604b、604c與604d、以及光學薄膜組606，且這些 構件除條狀發光裝置604a、604b、604c與604d排列方式略 不同於上述背光模組200外’其餘裝置可與上述背光模組 200之裝置相同’於此不再贅述。在本發明中，條狀發光裝 置之數量至少有三個’在第6圖之圖例中，背光模組6〇〇 1336415 具有左右對稱排列之二組條狀發光裝置6〇4a、604b、604c 與604d。這兩組條狀發光裝置604a、6〇4b、6〇4c與6〇4d 之排列係採對稱但非等距方式’且二相鄰之條狀發光裝置之 間隔從燈箱602之中央區朝外側漸增，如背光模組2〇〇 一 般’然本實施例為彌補因愈往外侧之相鄰二條狀發光裝置之 間的間距較大而導致亮度逐漸降低之情況，而利用提高外側 之條狀發光裝置的高度，以縮減外側之條狀發光裝置與光學 薄膜組606之間的距離，藉以提高背光模組6〇〇外側之亮 度。因此，在本實施例中，從背光模組6〇〇之中央區朝外側 之條狀發光裝置604a、604b、604c和604d與學薄膜組006 之間分別相隔距離只丨、Hz、H3和H4 ’其中與光學薄膜組 6〇6之距離ΗγΗγΗγΗ〗，也就是說，最外側之條狀發 光裝置604d與光學薄膜組606之距離h4最近，條狀發光裝 置604c與光學薄膜組606之間的距離Η〗遠一些條狀發光 裝置604b與光學薄膜組606之間的距離h2再遠一些而内 側之條狀發光裝置604a與光學薄膜組6〇6之間的距離Ηι 則最遂。因此，藉由調整條狀發光裝置與光學薄膜組6〇6 之間的距離，可達到提高背光模組6〇〇外侧的亮度，更進一 步改善背光模組600之輝度分布的均勻度。 由上述實施例可知，本發明可在以非等距方式設置條狀 發光裝置後，根據背光模組之整個顯示面的輝度分布，以光 學結構設計或調整各條狀發光裝置與光學薄膜組的距離的 方式，進一步改善背光模組之輝度分布的均勻度❶應該注意 的點疋，以上所述之三種光學結構設計方式，可單獨應 用，或者其中之任二種、甚至三種方式同時應用。 12 1336415 上述本發明之背光模組200〜600可應用在液晶顯示裝 置中。在背光模組200〜600之上組設液晶顯示面板，即可 組設出液晶顯示裝置，而完成本案背光模組之一種應用。舉 例而言’請參照第7圖，其係繪示依照本發明一較佳實施例 的一種液晶顯示裝置之剖面示意圖。液晶顯示裝置7〇〇主要 -係由液晶顯示面板708與第2圖所示之背光模組200所構 成’其中液晶顯示面板708疊設在背光模組200之上。利用 •背光模組200 ’可提供液晶顯示面板708背光源。一般而言， _ -液晶顯示面板708主要包括薄膜電晶體（TFT)基板702、液 晶層704以及彩色濾光片（CF)基板706，其中液晶層7〇4係 灌入且夾設在薄膜電晶體基板702與彩色滤光片基板7〇6 之間’如第7圖所示。 由上述本發明較佳實施例可知，本發明之一優點就是因 為本發明之背光模組可在兼顧人眼視覺品味，且符合產品規 格下，減少條狀發光裝置之使用量。因此，可充分利用資源， 更可達到降低生產成本之目的。 藝由上述本發明較佳實施例可知，本發明之另一優點就是 因為本發明之背光模組在人類視覺敏感範圍内拉大兩相鄰 條狀發光裝置之間的距離，而具有數量減少之非等距排列條 狀發光裝置。因此，可有效提高條狀發光裝置之利用率，進 • · 一步達到提升產品之經濟效益的目的。 由上述本發明較佳實施例可知，本發明之另一優點就是 -因為本發明之液晶顯示裝置可根據產品之操作特性，並在不 影響視覺品味下，進行背光模組之條狀發光裝置的排列設 計。因此，不僅可充分利用條狀發光裝置之效能，減少條狀 13 丄丄;) :光裝置的使用量，更可達到省 提升產品之市場競爭力。 i進步有效 雖然本發明已以一較佳實施例 限定本發明，任何熟習此技藝 二並非用以 ^ ^ ^ 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 =和 當視後附之申嗜糞糸丨益固&田 本發月之保遵範圍 〒叫專利範圍所界定者為準。 【圖式簡單說明】 第1圖係繪示傳統直下式昔I 之輝度分布示意圖。下式U模組之剖面以及其對應 :2目係繪示依照本發明一較佳實施例的一種背光模 •-之。丨面以及其對應之輝度分布示意圖。 第3圖係繪示依照本發 Μ έΒ ^ J 敕佳實施例的一種背光 模、·且之條狀發光裝置分布示意圖。 第4圖係繪示依照本發 模組之裝置剖面示意圖。較佳實施例的-種背光 模％圖係繪示依照本發明再—較佳實施例的—種背光 模組之裝置上視圖。 第6圖係緣示依照本發明再— Μ έΒ ^ ^ 較佳實施例的一種背光 模組之裝置剖面示意圖。 第7圖係績示依照本發明一較佳實施例的一種液晶顯 不裝置之剖面示意圖。 主要元件符號說明 100 :背光模組 102 : 燈箱 14 1336415The luminance distribution is asymmetrical, and generally the luminance of the region with a relatively high temperature is greater than the region with a relatively low temperature. Therefore, in order to balance the brightness variation caused by the unevenness of the temperature distribution, the arrangement density of the backlight module over the strip-shaped light-emitting device decreases as the temperature increases, that is, the adjacent strips are in the higher temperature region. The distance between the illuminating devices is increased, and in the lower temperature region, the distance between adjacent strip illuminators is reduced, as shown in FIG. Therefore, in the backlight module 300, the arrangement density of the strip-shaped light-emitting devices 3〇4 is increased from the top to the bottom. Another feature of the present invention is that the arrangement density of the strip-shaped light-emitting devices can be designed in accordance with the operational characteristics of the product, and a backlight module having strip-shaped light-emitting devices that are not equidistant and asymmetrically arranged can be provided. • The present invention can also improve the uniformity of the luminance distribution of the backlight module by using an optical structure design when the arrangement of the strip-shaped light-emitting device is too loose or the thickness of the module is reduced to cause a poor visual taste. Please refer to FIG. 4, which is a cross-sectional view of a backlight module according to another preferred embodiment of the present invention. The backlight module 400 also includes at least a light box 4〇2, a plurality of strip-shaped light-emitting devices 404, and an optical film group (not shown), wherein the devices of the components are substantially the same as the devices of the backlight module 2〇〇 described above, but The backlight module 400 further includes a mountain-shaped reflection sheet 4〇6 having at least one mountain structure 4〇8. In the backlight module 400, the mountain-shaped reflection sheets 4〇6 are attached to the bottom surface of the light box 4〇2 1336415. Since the mountain is from a, the 408 point of the mountain-shaped structure on the mountain-shaped reflection sheet 406 provides a scattering effect, so that the mountain-shaped structure can correspond to the strips provided in the brightness of the backlight module 400, such as, and the larger area. The light-emitting device 404 is disposed such that the luminance distribution of the back light module 400 tends to be uniform. Referring to Figure 5, there is shown a top view of a device for a light body module in accordance with still another preferred embodiment of the present invention. Similar to the previous embodiment, the backlight module mainly includes a lamp phase 502, a plurality of strip-shaped light-emitting devices 504 disposed in the light box 502, and an optical film group composed of at least one optical film 5〇6. The device of the component is substantially the same as the device of the backlight module 2, but the embodiment further provides at least one diffusion region 5〇8 on the optical film 5〇6, wherein the diffusion region 508 can utilize, for example, a printing dot, Injection molding, stamping, or laser processing is formed on the surface of the optical film 5〇6. In this embodiment, in order to make the luminance distribution of the backlight module 500 relatively uniform, a diffusion region 508 is provided on the surface of the optical film 5〇6 above the strip-shaped light-emitting device 504 by, for example, printing. The position of the diffusion region 508 may be determined according to the luminance distribution of the backlight module 5'. Generally, it may be disposed on a region where the luminance difference is large, as shown in FIG. Please refer to FIG. 6 for a schematic cross-sectional view of a device for a backlight module according to still another preferred embodiment of the present invention. The backlight module 6A also includes a light box 602, a plurality of strip-shaped light-emitting devices 604a, 604b, 604c and 604d, and an optical film group 606, and the components are apart from the strip-shaped light-emitting device 604a. The arrangement of 604b, 604c, and 604d is slightly different from that of the backlight module 200. The remaining devices may be the same as the devices of the backlight module 200, and details are not described herein again. In the present invention, the number of strip-shaped light-emitting devices is at least three. In the example of FIG. 6, the backlight module 6〇〇1336415 has two sets of strip-shaped light-emitting devices 6〇4a, 604b, 604c and 604d arranged symmetrically left and right. . The two sets of strip light-emitting devices 604a, 6〇4b, 6〇4c and 6〇4d are arranged symmetrically but not equidistantly and the spacing between two adjacent strip-shaped light-emitting devices is from the central area of the light box 602 to the outside. Increasingly, such as the backlight module 2, generally, this embodiment is to compensate for the fact that the distance between the adjacent two strip-shaped light-emitting devices that are closer to the outside is gradually reduced, thereby gradually reducing the brightness. The height of the light-emitting device is used to reduce the distance between the strip-shaped light-emitting device on the outer side and the optical film group 606, thereby improving the brightness of the outer side of the backlight module 6. Therefore, in the present embodiment, the strip-shaped light-emitting devices 604a, 604b, 604c, and 604d from the central portion of the backlight module 6 are spaced apart from the thin film group 006 by only 丨, Hz, H3, and H4. 'The distance from the optical film group 6〇6ΗγΗγΗγΗ, that is, the distance between the outermost strip light-emitting device 604d and the optical film group 606, the distance between the strip-shaped light-emitting device 604c and the optical film group 606 Further, the distance h2 between the strip-shaped light-emitting device 604b and the optical film group 606 is further away, and the distance Η between the inner strip-shaped light-emitting device 604a and the optical film group 6〇6 is the most ambiguous. Therefore, by adjusting the distance between the strip-shaped light-emitting device and the optical film group 6〇6, the brightness of the outer side of the backlight module 6 can be improved, and the uniformity of the luminance distribution of the backlight module 600 can be further improved. It can be seen from the above embodiments that the present invention can design or adjust each strip-shaped light-emitting device and optical film group by optical structure according to the luminance distribution of the entire display surface of the backlight module after the strip-shaped light-emitting device is disposed in a non-equidistant manner. The distance method further improves the uniformity of the luminance distribution of the backlight module. It should be noted that the three optical structure design methods described above can be applied separately, or any two or even three of them can be applied simultaneously. 12 1336415 The backlight modules 200 to 600 of the present invention described above can be applied to a liquid crystal display device. A liquid crystal display panel is assembled on the backlight modules 200 to 600, and a liquid crystal display device can be assembled to complete an application of the backlight module of the present invention. For example, please refer to Fig. 7, which is a cross-sectional view showing a liquid crystal display device in accordance with a preferred embodiment of the present invention. The liquid crystal display device 7 is mainly composed of a liquid crystal display panel 708 and a backlight module 200 shown in Fig. 2, wherein the liquid crystal display panel 708 is stacked on the backlight module 200. A backlight of the liquid crystal display panel 708 can be provided by the backlight module 200'. In general, the liquid crystal display panel 708 mainly includes a thin film transistor (TFT) substrate 702, a liquid crystal layer 704, and a color filter (CF) substrate 706, wherein the liquid crystal layer 7〇4 is filled and sandwiched between the thin film electrodes. Between the crystal substrate 702 and the color filter substrate 7〇6 is as shown in Fig. 7. According to the preferred embodiment of the present invention, one of the advantages of the present invention is that the backlight module of the present invention can reduce the amount of use of the strip-shaped light-emitting device while taking into consideration the visual taste of the human eye and conforming to the product specifications. Therefore, resources can be fully utilized and the production cost can be reduced. According to the preferred embodiment of the present invention described above, another advantage of the present invention is that the backlight module of the present invention has a reduced amount of distance between two adjacent strip-shaped light-emitting devices within a human visually sensitive range. Strip-shaped illuminators are arranged non-equidistantly. Therefore, the utilization rate of the strip-shaped light-emitting device can be effectively improved, and the purpose of improving the economic benefit of the product can be achieved in one step. According to the preferred embodiment of the present invention, another advantage of the present invention is that the liquid crystal display device of the present invention can perform the strip light-emitting device of the backlight module according to the operational characteristics of the product and without affecting the visual taste. Arrange the design. Therefore, not only can the performance of the strip-shaped illuminating device be fully utilized, but also the strip shape can be reduced;): the usage of the optical device can achieve the market competitiveness of the product in the province. Although the present invention has been described in terms of a preferred embodiment, it is not intended that the invention may be used in various modifications and changes without departing from the spirit and scope of the invention. And the scope of the patent application as defined in the scope of the patent application. [Simple description of the figure] Fig. 1 is a schematic diagram showing the distribution of the luminance of the conventional direct type I. The cross section of the U-module of the following formula and its correspondence: 2 is a backlight module according to a preferred embodiment of the present invention. Schematic diagram of the surface and its corresponding luminance distribution. Figure 3 is a schematic view showing the distribution of a strip-shaped light-emitting device according to a preferred embodiment of the present invention. Figure 4 is a cross-sectional view showing the apparatus according to the present module. The present invention is a top view of a device for a backlight module in accordance with a further preferred embodiment of the present invention. Figure 6 is a cross-sectional view showing a device of a backlight module in accordance with a preferred embodiment of the present invention. Figure 7 is a schematic cross-sectional view showing a liquid crystal display device in accordance with a preferred embodiment of the present invention. Main component symbol description 100 : Backlight module 102 : Light box 14 1336415
104 燈管 108 光學膜片 112 光學膜片 116 中央區 200 背光模組 204 條狀發光裝置 208 光學膜片 212 光學膜片 216 人眼輝度模糊區 220 輝度曲線 302 燈箱 306 溫度分布圖 402 燈箱 406 山型反射片 500 背光模組 504 條狀發光裝置 508 擴散區 602 燈箱 604b :條狀發光裝置 604d :條狀發光裝置 700 液晶顯示裝置 704 •液晶層 708 ’液晶顯示面板 D2 * 距離 D4 : 距離 106 •擴散板 110 :光學膜片 114 :人眼輝度模糊區域 118 :輝度曲線 202 :燈箱 206 •擴散板 210 :光學膜片 214 :光學薄膜組 218 :中央區 300 :背光模組 304 :條狀發光裝置 400 :背光模組 404 :條狀發光裝置 408 :山型結構 502 :燈箱 506 :光學膜片 600 :背光模組 6〇4a :條狀發光裝置 6〇4c :條狀發光裝置 606 :光學薄膜組 702 :薄膜電晶體基板 706 :彩色濾光片基板 D,： 距離 D3 : 距離 D5 : 距離 15 1336415 d, :距離 d2 · 距離 d3 :距離 d4 : 距離 H, :距離 H2 ： 距離 h3 :距離 H4 ： 距離104 Lamp 108 Optical film 112 Optical film 116 Central area 200 Backlight module 204 Strip light 208 Optical film 212 Optical film 216 Human eye luminance blur zone 220 Brightness curve 302 Light box 306 Temperature profile 402 Light box 406 Mountain Reflective sheet 500 backlight module 504 strip light emitting device 508 diffusion region 602 light box 604b: strip light emitting device 604d: strip light emitting device 700 liquid crystal display device 704 • liquid crystal layer 708 'liquid crystal display panel D2 * distance D4: distance 106 • Diffuser plate 110: optical film 114: human eye luminance blur region 118: luminance curve 202: light box 206 • diffusion plate 210: optical film 214: optical film group 218: central region 300: backlight module 304: strip light device 400: backlight module 404: strip light-emitting device 408: mountain structure 502: light box 506: optical film 600: backlight module 6〇4a: strip-shaped light-emitting device 6〇4c: strip-shaped light-emitting device 606: optical film group 702: thin film transistor substrate 706: color filter substrate D, distance D3: distance D5: distance 15 1336415 d, distance d2 Distance d3 : distance d4 : distance H, : distance H2 : distance h3 : distance H4 : distance