201243452 · 六、發明說明： 【發明所屬之技術領域】 本發明是有關於一種直下式背光模組及應用其之顯 不裴置，且特別是有關於一種具有透鏡片組及稜鏡片組之 直下式背光模組及應用其之顯示裝置。 【先前技術】 擴散膜功能為提供液晶顯示器均勻的面光源。一般傳 统的擴散膜主要是在擴散膜基材中加入化學顆粒，作為散 射板子。然而’於此架構下，由於化學顆粒的光學特性， 導致化學顆粒吸光而造成較高的亮度損失。 + 此外’為了縮小直下式背光模組的厚度，直下式背光 ，且之擴散膜與發光二極體（丨jght_emitting diode, LED) ，源'之間的間距（空腔高度）通常無法太大。然而，當空腔 w度小的情況下’光經過擴散膜後的擴光性不佳，且容易 產生像差問題。 【發明内容】 示I本發明係有關於一種直下式背光模組及應用其之顯 、置’直下式背光模組可增加擴光效率且減少或避免像 差問題，以提升顯示品質。 下根據本發明之一方面，提出一種直下式背光模組。直 _式背光模組包括數個發光二極體、一第一透鏡片、一第 〜透鏡片、一笫 —棱鏡片及一第二棱鏡片。相鄰二發光二 旮一第一_ . 一袖向相距一第一間距S1，且相鄰二發光二 201243452201243452 · VI. Description of the Invention: [Technical Field] The present invention relates to a direct type backlight module and a display thereof, and particularly relates to a lens group and a cymbal group Backlight module and display device using the same. [Prior Art] The diffusion film function is to provide a uniform surface light source of the liquid crystal display. A conventional conventional diffusion film is mainly obtained by adding chemical particles to a diffusion film substrate as a scattering plate. However, under this structure, due to the optical properties of the chemical particles, the chemical particles absorb light and cause a high loss of brightness. + In addition, in order to reduce the thickness of the direct-lit backlight module, the direct-lit backlight and the distance between the diffusion film and the light-emitting diode (LED) and the source (cavity height) are usually not too large. However, when the cavity w is small, the light transmittance after the light passes through the diffusion film is poor, and the aberration problem easily occurs. SUMMARY OF THE INVENTION The present invention relates to a direct-lit backlight module and a display and a direct-lit backlight module thereof, which can increase the light-expansion efficiency and reduce or avoid aberrations to improve display quality. According to an aspect of the invention, a direct type backlight module is proposed. The direct backlight module includes a plurality of light emitting diodes, a first lens sheet, a first lens sheet, a prism sheet and a second prism sheet. Adjacent two illuminating two 旮 first _. One sleeve is spaced apart by a first spacing S1, and adjacent two illuminating two 201243452
TW7595PA 極體係沿一第二軸向相距一第二間距S2。第一透鏡片鄰近 發光二極體配置且具有數個第一柱狀凸出結構。第二透鏡 片鄰近第一透鏡片配置且具有數個第二柱狀凸出結構。第 一稜鏡片鄰近第二透鏡片配置；以及，第二稜鏡片鄰近第 一稜鏡片配置。其中，第一柱狀凸出結構之延伸方向與第 二柱狀凸出結構之延伸方向之間夾一第一角度A1。其中， 第二間距 S2 與第一間距 S1 的比值 S2/S1 =sin(A1 )/(1+cos(A1)) ° 根據本發明之另一方面，提出一種顯示裝置。顯示裝 置包括一顯示面板及一直下式背光模組。直下式背光模組 鄰近顯示面板配置。直下式背光模組包括數個發光二極 體、一第一透鏡片、一第二透鏡片、一第一棱鏡片及一第 二稜鏡片。相鄰二發光二極體係沿一第一軸向相距一第一 間距S1，且相鄰二發光二極體係沿一第二轴向相距一第二 間距S2。第一透鏡片鄰近發光二極體配置且具有數個第一 柱狀凸出結構。第二透鏡片鄰近第一透鏡片配置且具有數 個第二柱狀凸出結構。第一稜鏡片鄰近第二透鏡片配置； 以及，第二稜鏡片鄰近第一稜鏡片配置。其中，第一柱狀 凸出結構之延伸方向與第二柱狀凸出結構之延伸方向之間 夾一第一角度A1。其中，第二間距S2與第一間距S1的 比值 S2/S1=sin(A1)/(1+cos(A1))。 為了對本發明之上述及其他方面有更佳的瞭解，下文 特舉實施例，並配合所附圖式，作詳細說明如下： 【實施方式】 201243452 ,, 1 w t〇y〇ri\ 本文所用的”鄰近”表示接近或連接在一起。相鄰的元 件可以互相分開或直接互相連接。 請參照第1及2圖，第1圖繪示依照本發明一實施例 之直下式背光模組的剖視圖，第2圖繪示第1圖之第一透 鏡片的立體圖。直下式背光模組1〇〇包括數個發光二極體 102、第一透鏡片1〇4、第二透鏡片1〇6、第一稜鏡片1〇8 及第二稜鏡片110。第二透鏡片106鄰近第一透鏡片1〇4 配置、第一稜鏡片108鄰近第二透鏡片1〇6配置，而第二 稜鏡片110鄰近第一稜鏡片108配置。 藉由第一透鏡片104及第二透鏡片106上下疊加之設 計，可增加出光擴散範圍，而藉由第一稜鏡片1〇8及第二 稜鏡片110上下疊加之設計，可增加出光均勻度、消除空 間條紋以及避免像差現象產生，也就是說，利用二片透鏡 片拉大光源之光線的出光擴光面積，再以二片稜鏡片利用 虛像重®方式提昇其出光均勻性。如此一來，即使空腔高 度H1(發光二極體102與第一透鏡片1〇4之間距）甚低， 例如低至15公分或低於15公分的情況下，仍可提供均勻 度甚佳的出光。 請參照第3圖，其繪示第1圖之發光二極體的俯視圖。 相鄰二發光二極體係沿第一軸向L1相距第一間距S1，且 相鄰二發光二極體係沿第二軸向L2係相距第二間距S2。 如第3圖所示’該些發光二極體1〇2可排列成長方 形。然其它實施態樣中’該些發光二極體1〇2亦可排列成 正方形、多邊形、不規則形或其它任意外形。 該些發光二極體102可排列成陣列狀，然亦可錯開排 201243452The TW7595PA pole system is spaced apart from the second axis by a second spacing S2. The first lens sheet is disposed adjacent to the light emitting diode and has a plurality of first columnar protruding structures. The second lens sheet is disposed adjacent to the first lens sheet and has a plurality of second columnar projection structures. The first cymbal is disposed adjacent to the second lenticular sheet; and the second cymbal is disposed adjacent to the first cymbal. The first angle A1 is sandwiched between the extending direction of the first columnar protruding structure and the extending direction of the second columnar protruding structure. Wherein the ratio of the second pitch S2 to the first pitch S1 is S2/S1 = sin(A1) / (1 + cos(A1)) ° According to another aspect of the present invention, a display device is proposed. The display device includes a display panel and a continuous backlight module. Direct-lit backlight module is adjacent to the display panel configuration. The direct type backlight module includes a plurality of light emitting diodes, a first lens sheet, a second lens sheet, a first prism sheet and a second sheet. The adjacent two light emitting diode systems are spaced apart from each other by a first spacing S1 along a first axial direction, and the adjacent two light emitting diode systems are spaced apart from each other by a second spacing S2 along a second axial direction. The first lens sheet is disposed adjacent to the light emitting diode and has a plurality of first columnar protruding structures. The second lens sheet is disposed adjacent to the first lens sheet and has a plurality of second columnar projection structures. The first cymbal is disposed adjacent to the second lenticular sheet; and the second cymbal is disposed adjacent to the first cymbal. The first column A1 is sandwiched between the extending direction of the first columnar protruding structure and the extending direction of the second columnar protruding structure. The ratio S2/S1 of the second pitch S2 to the first pitch S1 is sin(A1)/(1+cos(A1)). In order to better understand the above and other aspects of the present invention, the following specific embodiments, together with the accompanying drawings, are described in detail as follows: [Embodiment] 201243452,, 1 wt〇y〇ri\ Adjacent" means approaching or connecting together. Adjacent elements can be separated from each other or directly connected to each other. 1 and 2, FIG. 1 is a cross-sectional view of a direct type backlight module according to an embodiment of the present invention, and FIG. 2 is a perspective view of the first lens of FIG. The direct type backlight module 1 includes a plurality of light emitting diodes 102, a first lens sheet 1〇4, a second lens sheet 1〇6, a first wafer 1〇8, and a second wafer 110. The second lens piece 106 is disposed adjacent to the first lens piece 1〇4, the first die piece 108 is disposed adjacent to the second lens piece 1〇6, and the second die piece 110 is disposed adjacent to the first die piece 108. By designing the first lens sheet 104 and the second lens sheet 106 to be stacked one on top of the other, the light diffusion range can be increased, and the first wafer 〇8 and the second cymbal sheet 110 are stacked one on top of the other to increase the light uniformity. Eliminate the space stripe and avoid the aberration phenomenon, that is, use the two lens sheets to enlarge the light-expanding area of the light source, and then use the virtual image weight to improve the uniformity of the light. In this way, even if the cavity height H1 (the distance between the light-emitting diode 102 and the first lens sheet 1〇4) is very low, for example, as low as 15 cm or less, the uniformity is excellent. The light. Referring to FIG. 3, a plan view of the light-emitting diode of FIG. 1 is shown. The adjacent two light emitting diode systems are spaced apart from the first pitch S1 along the first axis L1, and the adjacent two light emitting diode systems are spaced apart from each other by the second pitch S2 along the second axis L2. As shown in Fig. 3, the light-emitting diodes 1〇2 can be arranged in a square shape. However, in other embodiments, the light-emitting diodes 1〇2 may be arranged in a square, a polygon, an irregular shape or any other shape. The light-emitting diodes 102 can be arranged in an array, but can also be staggered. 201243452
TW7595PA 列，以下係以第4圖,說明。 請參照第4圖，其繪示另一實施例之發光二極體的排 列圖。相鄰二排沿第一軸向U排列的發光二極體 102係 沿第一軸向L1錯開排列，其它實施態樣中，相鄰二排沿第 二軸向L2排列的發光二極體1〇2亦可沿第二軸向L2錯開 排列。 請參照第5圖，其綠示第】圖之第一透鏡片及第二透 鏡片的俯視圖。第一透鏡片104,鄰近該些發光二極體1〇2 配置且具有數個第一柱狀凸出結構112，該些第一柱狀凸 出結構112係沿第一方向D1延伸。第二透鏡片1〇6具有 數個第二柱狀凸出結構114,該些第二柱狀凸出結構m 係沿第二方向D2延伸，第—方向⑴與第二方向D2之間 夹第-角度A1。其中，第一角度A1、第一間距S1及第二 間距S2的關係滿足下式⑴，以擴散從發光二極體1〇2之 出光。 S2 — sin(Al) SI . . ................................................................. 如第5圖所示’第二透鏡片繞逆時針方向與第一 透鏡片104錯開第-角度A1。於另一實施例中，第二透鏡 片106亦可繞順時針方向與第一透鏡片1〇4錯開第一角产 A1。 & 此外，該些發光二極體中至少一些的位置係對應於第 一柱狀凸出結構與第二柱狀凸出結構之數個重疊區域。例 如，如第5圖所示，發光二極體1〇2 (未繪示於第5圖） 的位置可對應於第一柱狀凸出結構112與第二柱狀凸出結The TW7595PA column is described below with reference to Figure 4. Referring to Figure 4, there is shown an arrangement of light emitting diodes of another embodiment. The adjacent two rows of the LEDs 102 arranged along the first axis U are staggered along the first axis L1. In other embodiments, the adjacent two rows of LEDs arranged along the second axis L2 are arranged. The crucibles 2 may also be arranged in a staggered manner along the second axial direction L2. Referring to Fig. 5, the green view shows a plan view of the first lens sheet and the second lens. The first lens sheet 104 is disposed adjacent to the light emitting diodes 1 2 and has a plurality of first columnar protrusions 112 extending in the first direction D1. The second lens sheet 1〇6 has a plurality of second columnar protrusion structures 114 extending in the second direction D2, and the first direction (1) and the second direction D2 are sandwiched between - Angle A1. Here, the relationship between the first angle A1, the first pitch S1, and the second pitch S2 satisfies the following formula (1) to diffuse light from the light-emitting diodes 1〇2. S2 — sin(Al) SI . . ........................................... ........................ As shown in Fig. 5, 'the second lens piece is offset from the first lens piece 104 by the counter-clockwise direction - the angle A1 . In another embodiment, the second lens sheet 106 can also be offset from the first lens sheet 1〇4 by a first angle A1 in a clockwise direction. & In addition, the position of at least some of the light emitting diodes corresponds to a plurality of overlapping regions of the first columnar protruding structure and the second columnar protruding structure. For example, as shown in FIG. 5, the position of the light-emitting diode 1〇2 (not shown in FIG. 5) may correspond to the first columnar protrusion structure 112 and the second columnar protrusion line.
201243452 1 W7595PA 構114之重疊區域P，然、此非用以限制本發明 態樣中’即使發光二極體1Q2之位置係與第 * 構112或第二柱狀凸出結構114之間無對應限制 響發光二極體102之光線自第一柱狀凸出結構112及第二 柱狀凸出結構114出光後產生二維擴光的效果。 第一透鏡片104及第二透鏡片1〇6係透鏡社構。第一 透鏡片104與第二透鏡片106中至少一者可不含 子’在此情況下’可減少光線經過透鏡結構的損失f以增 加光源效率。此外，第一透鏡片104及第二透鏡片1〇6之 材質包括¾^對本一甲酸乙二醋（polyethylene terephthalate，PET)、聚碳酸酯（P〇|y Carbonate，PC) 或聚甲基丙稀酸甲酯（Polymethylmethacrylate, PMMA)。 另外’第一透鏡片104之結構或材質可相同或不同於第二 透鏡片106之結構或材質，本實施例之第一透鏡片1〇4之 結構及材質係以相同於第二透鏡片1〇6之結構及材質為 例0 請參照第6圖’其繪示第1圖之第一稜鏡片及第二稜 ，片的俯視圖。透過第一稜鏡片1〇8及第二稜鏡片110的 豐加設計’除了可增加從第一稜鏡片1〇8及第二稜鏡片110 之出光的免度外’亦可均勻化從第一透鏡片104及第二透 鏡^ 1〇6的出光。進一步地說，第一稜鏡片1〇8具有數個 第=柱狀凸出結構116，該些第三柱狀凸出結構116係沿 第二1向D3延伸，而第二稜鏡片11〇具有數個第四柱狀 凸出結構118 ’該些第四柱狀凸出結構118係沿第四方向 D4_’第三方向D3與第四方向D4之間夾第二角度A2。 8 201243452201243452 1 W7595PA overlap region P of the structure 114, however, this is not intended to limit the aspect of the present invention, even if there is no correspondence between the position of the light-emitting diode 1Q2 and the first structure 112 or the second columnar convex structure 114. The light that restricts the light-emitting diode 102 emits light from the first columnar protrusion structure 112 and the second columnar protrusion structure 114 to produce a two-dimensional light-expanding effect. The first lens sheet 104 and the second lens sheet 1〇6 are lens structures. At least one of the first lens sheet 104 and the second lens sheet 106 may be free of sub- in this case to reduce the loss f of light passing through the lens structure to increase light source efficiency. In addition, the materials of the first lens sheet 104 and the second lens sheet 1〇6 include 3⁄4^ pair of polyethylene terephthalate (PET), polycarbonate (P〇|y Carbonate, PC) or polymethyl propyl Polymethylmethacrylate (PMMA). In addition, the structure or material of the first lens sheet 104 may be the same or different from the structure or material of the second lens sheet 106. The structure and material of the first lens sheet 1〇4 of the embodiment are the same as those of the second lens sheet 1. The structure and material of the crucible 6 are as an example. Referring to Fig. 6 ', the first and second ribs of Fig. 1 are shown, and the top view of the sheet is shown. The rich design of the first cymbal 1 〇 8 and the second cymbal 110 'can be increased from the first cymbal 1 〇 8 and the second cymbal 110 The light emitted from the lens sheet 104 and the second lens ^1〇6. Further, the first cymbal 1 〇 8 has a plurality of scalar convex structures 116 extending along the second 1 direction D3, and the second cymbal 11 〇 has The plurality of fourth columnar protrusions 118' are sandwiched by the second angle A2 between the third direction D4 and the fourth direction D4 in the fourth direction D4_'. 8 201243452
TW7595PA 其中，第二角度A2、第一間距S1及第二間距S2的關係 滿足下式（2)，以均勻化從第一透鏡片104及第二透鏡片 106的出光。 S2_ sin(A2) SI ~ 1 + cos(A2).................................................................." 一般而言，在使用點光源作為直下式背光模組之光源 的情況下，搭配單片透鏡片通常會導致像差問題。本實施 例中，雖然直下式背光模組採用點光源搭配透鏡片，然透 過多片棱鏡片交疊一角度的設計，可減少或甚至避免像差 問題發生，且可增加出光亮度。 如第6圖所示，第二棱鏡片110繞逆時針方向與第一 棱鏡片108錯開第二角度A2。於另一實施例中，第二稜鏡 片110亦可繞順時針方向與第一稜鏡片108錯開第一角度 A1。 第一棱鏡片108及第二稜鏡片110之材質包括聚對苯 二甲酸乙二酯、聚碳酸酯或聚曱基丙烯酸曱酯。此外，第 一棱鏡片108之結構或材質可相同或不同於第二稜鏡片 110之結構或材質，本實施例之第一棱鏡片108之結構及 材質係以相同於第二棱鏡片110之結構及材質為例。 此外，第一稜鏡片108之第三柱狀凸出結構116的延 伸方向D3與第一透鏡片104之第一柱狀凸出結構112的 延伸方向D1實質上同向；或者，於另一實施態樣中，第 一稜鏡片108之第三柱狀凸出結構116的延伸方向D3可 繞著垂直紙面的方向與第一柱狀凸出結構112的延伸方向 201243452 D1錯開一角度。 此外，第一透鏡片、第二透 一結構的剖_:= 下二;=二㈣形的至少，。以 "月參照第7圖，其綠示—實施彳 的剖視圖。以第一透鏡片604 :==出結構 剖面輪廓係半圓形的一部分。 、’、112的 構第8圖’其綠示另一實施例之第-柱狀凸出結 出結構212的剖面輪廓包括圓形 相對二直線212b ’該部分2心與直線 212b係相切（tangent)。其中，該部分之寬度^ 與二直線212b _下緣寬度比值較佳地係大於或實 負上等於（D.7 ’然其它實施態樣中亦可小於Q 7。藉由調整 此寬度比I，可得到適當的光學特#，例％是得到一適當 或預期的擴光範圍。 請參照第9 ®，其繪示又—實施例之第—柱狀凸出結 構的剖視圖。第-柱狀凸出結構412的剖面輪㈣半圓形。 請參照第10圖，其繪示第6圖_沿方向1〇_1〇，的剖 視圖。以第一稜鏡片108之第三柱狀凸出結構116為例， 第二柱狀凸出結構116的剖面輪廓係梯形的至少一部分。 其中，梯形之短邊312a之寬度W3與底部（長邊部）3i2b 之寬度W4的比值較佳地係大於或實質上等於〇 7,然其它 貫施態樣中亦可小於0.7。當寬度比值縮小至〇時，第三 柱狀凸出結構116的剖面輪廓係三角形。藉由調整此寬度 201243452TW7595PA The relationship between the second angle A2, the first pitch S1, and the second pitch S2 satisfies the following equation (2) to uniformize the light emitted from the first lens sheet 104 and the second lens sheet 106. S2_ sin(A2) SI ~ 1 + cos(A2)..................................... ............................." In general, in the case of using a point source as the light source of the direct type backlight module With a single lens, it usually causes aberrations. In this embodiment, although the direct-lit backlight module uses a point source with a lens sheet, the design of the overlapping angles of the plurality of prism sheets can reduce or even avoid the occurrence of aberrations, and can increase the brightness of the light. As shown in Fig. 6, the second prism sheet 110 is shifted from the first prism sheet 108 by a second angle A2 in the counterclockwise direction. In another embodiment, the second cymbal sheet 110 can also be offset from the first cymbal 108 by a first angle A1 in a clockwise direction. The material of the first prism sheet 108 and the second cymbal sheet 110 includes polyethylene terephthalate, polycarbonate or decyl acrylate. In addition, the structure or material of the first prism sheet 108 may be the same or different from the structure or material of the second cymbal sheet 110. The structure and material of the first prism sheet 108 in this embodiment are the same as those of the second prism sheet 110. And the material is an example. In addition, the extending direction D3 of the third columnar protruding structure 116 of the first die piece 108 is substantially the same as the extending direction D1 of the first columnar protruding structure 112 of the first lens piece 104; or, in another implementation In the aspect, the extending direction D3 of the third columnar protruding structure 116 of the first cymbal 108 is offset from the direction perpendicular to the vertical direction of the first cylindrical protruding structure 112 by an angle of 201243452 D1. Further, the first lens sheet and the second transparent structure have a cross section _: = lower two; = two (four) shapes at least. Referring to Figure 7 with "month, its green is shown as a cross-sectional view of the implementation. With the first lens piece 604: == the structure is a part of the semicircular profile. The cross-sectional profile of the first-column projecting structure 212 of the other embodiment includes a circular opposite two-line 212b' which is tangent to the straight line 212b ( Tangent). Wherein, the ratio of the width ^ of the portion to the width of the second line 212b_lower edge is preferably greater than or equal to (n.7'. In other embodiments, the ratio may be smaller than Q7. By adjusting the width ratio I A suitable optical characteristic can be obtained, and the example % is to obtain an appropriate or expected light-expanding range. Please refer to Section 9®, which shows a cross-sectional view of the columnar convex structure of the first embodiment. The cross-section wheel (4) of the protruding structure 412 is semi-circular. Referring to Figure 10, a cross-sectional view taken along line 6 〇_1 〇 is shown. The third columnar protruding structure of the first cymbal 108 For example, the cross-sectional profile of the second columnar projection structure 116 is at least a portion of the trapezoid. The ratio of the width W3 of the short side 312a of the trapezoid to the width W4 of the bottom portion (long side portion 3i2b) is preferably greater than or It is substantially equal to 〇7, but other modes can also be less than 0.7. When the width ratio is reduced to 〇, the cross-sectional profile of the third columnar protrusion 116 is triangular. By adjusting this width 201243452
TW7595PA 比值，可得到適當或預期的光學特性，例如是得到一適當 或預期的擴光範圍。 此外，該些第一柱狀凸出結構之群組、該些第二柱狀 凸出結構之群組、該些第三柱狀凸出結構之群組與該些第 四柱狀凸出結構之群組中至少一群組的該些柱狀凸出結構 係相鄰配置。此處之”相鄰配置”指的是：二柱狀凸出結構 係彼此接觸或錯開一距離而不接觸。舉例來說，相鄰二第 一柱狀凸出結構112 (繪示於第2圖）係接觸；又例如， 相鄰二第一柱狀凸出結構312 (繪示於第10圖）係彼此接 觸；再例如，相鄰二第一柱狀凸出結構112 (如第7圖所 示）係錯開一距離S3而不接觸且定義出縫隙120 ;又例 如，第一透鏡片404(繪示於第9圖）具有數個凹部404「。 該些凹部404r之一者位於相鄰二第一柱狀凸出結構412 之間，使得相鄰二第一柱狀凸出結構412係不接觸。此外， 第二透鏡片、第一棱鏡片與第二稜鏡片中至少一者亦可具 有數個凹部（未繪示），其結構可相似於第一透鏡片404 之凹部404r，容此不再贅述。對於相鄰二柱狀凸出結構錯 開一距離而不接觸的設計來說，其在製造上係簡單，可節 省製造成本、工時以及提升產品良率。 參照第11圖，其繪示依照本發明一實施例之顯示裝 置的立體圖。顯示裝置500包括顯示面板502及直下式背 光模組100,直下式背光模組100鄰近顯示面板502配置。 顯示面板502例如是液晶顯示面板。 本發明上述實施例所揭露之直下式背光模組及應用 其之顯示裝置，直下式背光模組中，藉由第一透鏡片及第 201243452 i w 二透鏡片疊加之設計，可增加出光擴散範圍，而藉由第一 棱鏡片及第二稜鏡片疊加之設計，可增加出光均勻度、消 除空間條紋以及避免像差現象產生。 綜上所述，雖然本發明已以實施例揭露如上，然其並 非用以限定本發明。本發明所屬技術領域中具有通常知識 者，在不脫離本發明之精神和範圍内，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】 第1圖繪示依照本發明一實施例之直下式背光模組的 剖視圖。 第2圖繪示第1圖之第一透鏡片的立體圖。 第3圖繪示第1圖之發光二極體的俯視圖。 第4圖繪示另一實施例之發光二極體的排列圖。 第5圖繪示第1圖之第一透鏡片及第二透鏡片的俯視 圖。 第6圖繪示第1圖之第一稜鏡片及第二稜鏡片的俯視 圖。 第7圖繪示一實施例之第一柱狀凸出結構的剖視圖。 第8圖繪示另一實施例之第一柱狀凸出結構的剖視 圖。 第9圖繪示又一實施例之第一柱狀凸出結構的剖視 圖。 第10圖繪示第6圖中沿方向10-10’的剖視圖。 12 201243452The TW7595PA ratio provides appropriate or expected optical properties, such as an appropriate or desired range of light amplification. In addition, the group of the first columnar protruding structures, the group of the second columnar protruding structures, the group of the third columnar protruding structures, and the fourth columnar protruding structures The columnar protruding structures of at least one of the groups are adjacently disposed. By "adjacent configuration" herein is meant that the two columnar projection structures are in contact with each other or offset by a distance without contact. For example, two adjacent first columnar protrusions 112 (shown in FIG. 2) are in contact; for example, two adjacent first columnar protrusions 312 (shown in FIG. 10) are connected to each other. Contacting; for example, adjacent two first columnar protrusions 112 (as shown in FIG. 7) are staggered by a distance S3 without contacting and defining a slit 120; for example, a first lens sheet 404 (shown in Figure 9) has a plurality of recesses 404". One of the recesses 404r is located between the adjacent two first columnar projections 412 such that the adjacent two first columnar projections 412 are not in contact. At least one of the second lens sheet, the first prism sheet and the second sheet may also have a plurality of recesses (not shown), and the structure thereof may be similar to the recess 404r of the first lens sheet 404, which will not be described again. For a design in which adjacent two columnar protruding structures are staggered by a distance without contact, it is simple in manufacturing, which can save manufacturing cost, man-hours, and improve product yield. Referring to Figure 11, it is shown in accordance with A perspective view of a display device according to an embodiment of the present invention. The display device 500 includes a display panel 502 and a straight The direct type backlight module 100 is disposed adjacent to the display panel 502. The display panel 502 is, for example, a liquid crystal display panel. The direct type backlight module disclosed in the above embodiments of the present invention and the display device using the same, the direct type In the backlight module, the first lens sheet and the 20124342 iw two lens sheet are superimposed to increase the light diffusion range, and the first prism sheet and the second sheet overlap design can increase the light uniformity. Eliminating the spatial streaks and avoiding the occurrence of aberrations. In summary, although the present invention has been disclosed in the above embodiments, it is not intended to limit the present invention. Those skilled in the art to which the present invention pertains, without departing from the invention. The scope of the present invention is defined by the scope of the appended claims. [FIG. 1] FIG. 1 is a view of the present invention. A cross-sectional view of a direct type backlight module of an embodiment. Fig. 2 is a perspective view of the first lens sheet of Fig. 1. Fig. 3 is a view showing the light emitting diode of Fig. 1. 4 is a top view of a light emitting diode according to another embodiment. Fig. 5 is a plan view showing a first lens sheet and a second lens sheet of Fig. 1. Fig. 6 is a first view FIG. 7 is a cross-sectional view showing a first columnar protruding structure of an embodiment. FIG. 8 is a first columnar protruding structure of another embodiment. Fig. 9 is a cross-sectional view showing a first columnar projecting structure according to still another embodiment. Fig. 10 is a cross-sectional view taken along line 10-10' in Fig. 6. 12 201243452
TW7595PA 第11圖繪示依照本發明一實施例之顯示裝置的立體 圖。 【主要元件符號說明】 100 :直下式背光模組 102:發光二極體 1〇4、404、604 :第一透鏡片 106 :第二透鏡片 108 :第一稜鏡片 110 :第二稜鏡片 112、212、312、412 :第一柱狀凸出結構 114 :第二柱狀凸出結構 116 :第三柱狀凸出結構 118 :第四柱狀凸出結構 120 :縫隙 212a :圓形的一部分 212b :直線 312a :短邊 312b :底部 404r :凹部 500 :顯示裝置 502 :顯示面板 A1 :第一角度 A2 :第二角度 D1 :第一方向 D2 :第二方向 13 201243452 TW7595PA D3 :第三方向 D4 :第四方向 H1 :空腔高度 L1 :第·一抽向 L2 :第二軸向 P:重疊區域 51 :第一間距 52 :第二間距 53 :距離 W1、W2、W3、W4 :寬度 14TW7595PA Figure 11 is a perspective view of a display device in accordance with an embodiment of the present invention. [Main component symbol description] 100: Direct type backlight module 102: Light-emitting diodes 1〇4, 404, 604: First lens sheet 106: Second lens sheet 108: First wafer 110: Second wafer 112 , 212, 312, 412: first columnar protrusion structure 114: second columnar protrusion structure 116: third columnar protrusion structure 118: fourth columnar protrusion structure 120: slit 212a: part of a circle 212b: straight line 312a: short side 312b: bottom 404r: recess 500: display device 502: display panel A1: first angle A2: second angle D1: first direction D2: second direction 13 201243452 TW7595PA D3: third direction D4 : fourth direction H1 : cavity height L1 : first extraction direction L2 : second axial direction P: overlapping area 51 : first spacing 52 : second spacing 53 : distance W1 , W2 , W3 , W4 : width 14