TW201115184A - Compound optical element, backlight module and flat display apparatus - Google Patents
Compound optical element, backlight module and flat display apparatus Download PDFInfo
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201115184 六、發明說明： 【發明所屬之技術領域】 本發明係關於一種複合光學元件，特別關於一種具有聚 光及擴散功能之複合光學元件，以及其背光模組與平面顯示 裝置。 【先前技術】 請參照圖一所示，一種習知之侧光式（side-edgetype) 背光模組10包含一光源101、一反射片102、一導光板l〇3、 以及一光學膜片組104。光學膜片組1〇4包含一下擴散膜片 111、一第一稜鏡膜片112、一第二稜鏡膜片113及一上擴散 膜片114。其中，第一棱鏡膜片H2與第二棱鏡膜片113的 稜鏡結構係垂直交錯設置，且第一稜鏡膜片112、第二棱鏡 膜片113及上擴散膜片114係依序疊設於下擴散膜片m之 上。光學膜片組104則設置於導光板103之上。 光源101係鄰設於該導光板103，光源101的光線（圖 未顯示）射入導光板103後’經由導光板103底面的網點破 壞光線的全反射後，進而導入光學膜片組104，此時從導光 板射出的光線因其出光角度極大。因此光源101的光線經過 下擴散膜片111進行初步擴散後光場分布會稍微平緩，但也 使得中心輝度下降，需再經由第一稜鏡膜片112及第二稜鏡 膜片113利用光線折射的原理，將光線收歛以提升中心亮 201115184 度。最後再由上擴散膜片114稍微均勻光線，以提供平面顯 示裝置所需的面光源。 另外還有一種逆稜鏡膜片’其稜鏡結構朝向導光板面擺 置，稜鏡的柱狀結構擺設方向平行於光源101 ;其原理為將 光源的光線射入導光板後再反射出來的光線，利用Snell’s Law計算出適當的全反射角度’利用全反射的原理將從導光 板射出的光線導正向上；如美國專利5126882、5711589、 . 5863113、6502947、6874902、7008099、7153017、7220038。 上述的搭配方式可將傳統的光學膜片組中下擴散膜片 與第一稜鏡膜片兩片的功能合而為一，但是逆稜鏡膜片結構 的角度都很尖銳，組在背光模組中容易壓傷；而且逆棱鏡膜 片的反射角度會因導光板的導光角度不同而影響出光的指向 性。另外還有一個缺點就是逆稜鏡膜片會與導光版上的結構 或是第二稜鏡膜片113產生干涉條紋，雖然陸續提出解決的 • 方式’如美國專利6628460、687〇674、6799859，但是在實 際生產時都無法完全克服此問題。 另外還有一種方式可以將第二稜鏡膜片113及一上擴散 膜片114合而為一，其作法為將第二稜鏡片113基材的第二 表面上再塗佈一層帶有擴散效果的霧化層，藉由此霧化層將 第一稜鏡與第二稜鏡間的濕潤蘊開的現象與兩棱鏡間可能的 刮傷問題避開。此現象改良之具體實施例敘述於美國專利 201115184 5598280、5995288、6825984。 整個背光模組中光學膜片組1〇4的組成膜片數量較多， 會使得背光模組10之生產成本增加，且目前習知的各種改善 方式均會造献絲則製作成本與卫柄增加，以及餘 完全避免彼此搭配時產生的干涉條紋。 因此’如供-觀合絲树、料概及平面顯 示裝置，㈣具有聚光及概的光學魏，且不會因各膜片201115184 VI. Description of the Invention: The present invention relates to a composite optical component, and more particularly to a composite optical component having a collecting and diffusing function, and a backlight module and a flat display device therefor. [Background] Referring to FIG. 1 , a conventional side-edge type backlight module 10 includes a light source 101 , a reflective sheet 102 , a light guide plate 10 , and an optical film set 104 . . The optical film group 1〇4 includes a lower diffusion film 111, a first ruthenium film 112, a second ruthenium film 113, and an upper diffusion film 114. The first prism film H2 and the second prism film 113 are vertically arranged in a staggered manner, and the first 稜鏡 film 112, the second prism film 113, and the upper diffusion film 114 are sequentially stacked. Above the lower diffusion membrane m. The optical film set 104 is disposed on the light guide plate 103. The light source 101 is disposed adjacent to the light guide plate 103. The light of the light source 101 (not shown) is incident on the light guide plate 103, and then the total reflection of the light is broken through the mesh point on the bottom surface of the light guide plate 103, and then introduced into the optical film group 104. The light emitted from the light guide plate is extremely large due to its light exit angle. Therefore, the light field distribution of the light source 101 is slightly flat after the initial diffusion of the light from the lower diffusion film 111, but the center luminance is also lowered, and the light is further refracted through the first and second diaphragms 112 and 113. The principle is to converge the light to raise the center bright 201115184 degrees. Finally, the upper diffusing film 114 is slightly uniform in light to provide the surface light source required for the flat display device. In addition, there is a reverse diaphragm which has its crucible structure facing the surface of the light guide plate, and the columnar structure of the crucible is arranged parallel to the light source 101; the principle is that the light of the light source is reflected into the light guide plate and then reflected. Light, using Snell's Law to calculate the appropriate total reflection angle 'Using the principle of total reflection to direct the light emitted from the light guide plate; as shown in U.S. Patents 5,126,882, 5,721,589, 5,863,113, 6,502,947, 6,874,902, 7,080,099, 7,153,017, and 72,020,038. The above matching method can combine the functions of the lower diffusion diaphragm and the first diaphragm in the conventional optical film group, but the angle of the reverse diaphragm structure is sharp, and the group is in the backlight mode. The group is easy to be crushed; and the reflection angle of the reverse prism diaphragm affects the directivity of the light due to the difference in the light guiding angle of the light guide plate. Another disadvantage is that the reverse diaphragm will create interference fringes with the structure on the light guide or the second diaphragm 113, although the method of solving it is as follows: US Patent 6,628,460, 687, 674, 6799859 However, this problem cannot be completely overcome in actual production. In addition, there is another way to combine the second diaphragm 113 and the upper diffusion diaphragm 114 into one, which is to apply a diffusion effect on the second surface of the second wafer 113 substrate. The atomization layer, by means of the atomization layer, avoids the phenomenon of wetting between the first weir and the second weir and the possible scratching problem between the prisms. Specific examples of the improvement of this phenomenon are described in U.S. Patents 201115184 5598280, 5995288, and 6825984. The number of diaphragms of the optical film group 1〇4 in the entire backlight module is large, which will increase the production cost of the backlight module 10, and various conventional improvement methods will provide the manufacturing cost and the support handle. Increase, and the interference stripe generated when the balance is completely avoided. Therefore, as for the supply-viewing silk tree, the material and the flat display device, (4) have the light and the general optical, and will not be caused by the various films.
與導光板間的干涉條紋影響，減対光模組之中各種膜片的 使用數量，祕升平_示裝置的組裝良率，實為當前 重要課題之一。 【發明内容】 有鐘於上述課題匕…队㈡列句從供一種複合光學元 件、背光模組及平面顯示裝置，係能夠提升正向出光亮度並 均勻光線，亦能夠提升平面顯示裝置的喊良率。儿又 緣是’為達上述目的，依據本發明之—種複合光學元件 具有-基材、-齡結構以及—不顯的類透鏡弧狀結構。 基材係具有-第-表面及—第二表面，第—表面與第 係相對設置，第-表面面料歧，具雜狀餘結構，第 —表面具有不規則排列的類透鏡弧狀結構。 人—為達上述目的，依縣㈣之—種獻光式縣模组包 占-複合光學元件、-導光板以及至少H複合光學元 201115184 件具有一基材、一稜柱結構以及一不規則的類透鏡弧狀結 構。基材係具有—第—表面及—第二表面，第-表面與第二 表面係相對設置’第一表面面對導光板，具有柱狀稜柱結構， 第二表面具有不規則排列的類透鏡弧狀結構。光源係設於導 光板的側面形成—人光面’複合絲元件上的餘結構平行 ；光面此側入光式的導光板光源所發射的一光線穿過 複合光學元件。 φ $達上述目的，依據本發明之-種平面顯示裝置包含一 側入光式月光模組以及一平面顯示面板。此背光模組具有一 複合光學元件、—導紐以及至少-絲。光騎發射的光 線穿過複合絲元件。複合光學元件具有—絲、一棱柱結 構以及-不規則的類透鏡弧狀結構。基材係具有一第一表面 及第一表面，弟-表面與第二表面係相對設置，第一表面 面對導光板，具有柱狀稜柱結構，第二表面具有不規則排列 • 的類透鏡孤狀結構。平面顯示面板與背光模組對應設置。 承上所述，依本發明之一種複合光學元件、背光模組 及平面顯錢置。此複合光學則具有—基材、—棱柱结構 以及-不規則的類透鏡弧狀結構。基材係具有一第一表面及 第一表面’第一表面與第二表面係相對設置，第一表面面 對導光板，具有柱狀稜柱結構，第二表面具有不規則排列的 類透鏡弧狀結構。導光板光源所發射的一光線穿過第一表面 201115184 的柱狀稜柱結構後將光線向上收斂，再經由第二表面具有不 規則排列的類透鏡弧狀結構將光線向上進一步收斂與均勻擴 散。與習知技術相較，本發明之複合光學元件能夠達到均勻 光線散射效果及提升中心輝度的聚光效果，並且可避免干涉 條紋的發生’以及達到耐刮的效果，減少背光模組中光學膜 片使用的數量，以降低稜鏡片的生產成本與背光模組的組裝 成本與組裝良率。 I 【實施方式】 以下將參照相關圖式，說明依據本發明較佳實施例之一 種複合光學元件、背光模組及平面顯示裝置，其中相同的元 件將以相同的符號加以說明。 第一實施例 請參照圖二之一所示，為本發明第一實施例的剖面圖， 其係為-種複合光學元件術，包含一基板2(Π、棱柱結構 • 施與不規則的類透鏡弧狀結構紙共同組成；基板201 係具有相對設置之-第一表面301及一第二表面3〇2，第一 表面301上具有一稜柱結構·，第二表面3〇2上具有一類 透鏡弧狀結構203a。圖二之二則為此複合光學元件術之 斜視圖圖中可清楚闡述出稜柱結構施與不規則的類透 鏡弧狀結構203a的相對位置，類透鏡弧狀結構施位於基 板的第二表面302上，與稜柱結構施為相對關係；圖 201115184 二之三則為此複合光學元件4〇la之下斜視圖，稜柱結構2〇2a 位於基板201的第一表面301上。 在此實施例中，基板201係具有相對設置之一第一表面 301及一第二表面302，第一表面301與第二表面3〇2係相 對設置。其中，基板201之材質可為聚對苯二甲酸乙二酸酯 (Polyethylene Terephtiialate，PET )、聚碳酸酯(p〇iyCarb〇nate ’ PC)、環烯共聚物（CyCHc 〇iefm c〇p〇lymer，c〇c)、金屬鉻 合物-環烯共聚物（metallocene-basedcyclic olefmcopolymer， mCOC)、或其混合物。而基板2〇1之厚度為12择至5〇〇 。本實施例中，基板2〇1係以厚度125/zm之聚對苯二 甲酸乙二酸酯（PolyethyleneTerephthalate，PET)為例。 第一表面301上具有一複數稜柱結構2〇2a，此稜柱結 構202a可利用滚輪作為模具’於基板2〇1的第一表面3〇1 上塗佈光硬化樹脂後進行壓花（embossing)製程，以紫外 線固化而形成；此棱柱結構202a之製造方法並不限於此， 也可以利用滾輪壓印於具有光硬化樹脂的模具上，固化後 再貼附於基板201上；為了得到最好的光學效果，此光硬 化樹脂的折射率必須1.4到1.8之間。 請參照圖三闡述此稜柱結構202a的結構，圖三中之棱 柱結構202a為一三角形尖端朝下的柱狀結構，其設計由0 1與02來確認入射光的折射角度，0 1與02可以相等也 201115184 可以不相等，01加(92的角度範圍為9〇度到140度；稜 柱結構202a的寬度Pw最適化為1〇到15〇uffl;在此實施中， (91等於(92 ’ <91加(92為11〇度，稜柱結構2〇2的寬度 Pw 為 20um。 請參照圖二之二與圖四來闡述類透鏡弧狀結構2〇3a的 結構，如圖一之二所示，此類透鏡弧狀結構2〇3a是自基板 201的第二表面302成行’且高度與密度不等；如圖四所示， 鲁 本實施例的弧狀結構203a在第二表面302為下凹結構，為 得到最好的光學效果，此透鏡結構2〇3a的直徑Rw與高度 Μ必須加以限制，如圖四所示，此弧狀結構2〇3a的直徑 Rwl最適化範圍為1〇到200um，高度Rd則為負3到負 lOOura ’ Λ起以正值表示’下凹則以負值表示；在本實施例 中類透鏡錄結構2G3a的直徑rw分佈為2()到，高度 Rd分佈為負3到負20um。 • 此類透鏡弧狀結構2()3&是一體成型於基板201的第二 表面302上，可利用滾輪或是—軟模作為模具，於基板2〇ι 的第二表面302上塗佈光硬化樹脂後進行壓花(emb〇ssing) 製程，以紫外線固化而形成；為了得到最好的光學效果， 此光硬化樹脂的折射率必須1.4到18之間。 為了更佳定義此類透鏡弧狀結構鳥的效果，此類透 鏡弧狀結構203a在基材另-面無稜柱結構2〇2存在時，以 201115184 JISK7361-1 : 1997標準方法測試，其光線穿透率在60%以 上’以JISK7361-1 : 2000標準方法測試，其霧度在30%以 上所構成。 第二實施例 請參照圖五之一到圖五之三所示，本發明第二實施例 之另一種複合光學元件4〇lb包含包含一基板201、複數稜 柱結構組202b與不規則的類透鏡弧型結構203b共同組 鲁成。由於基板201、、複數稜柱結構組202b及類透鏡弧型 結構203b相對位置以及材質已於第一實施例詳述，於此不 再贅述。 於本實施例中，稜柱結構組與第一實施例不同的地方 在於此複數稜柱結構組2〇2b的高度並不相同；請參照圖 ^、，第一稜柱211的第一高度Pdl及第二稜柱212的第二 尚度Pd2並不相同，此複數稜柱結構組202b則由第一稜柱 • 211與第二餘212所組成；稜柱的角度最佳範圍已於第- 實施例詳述，於此不再贅述；此複數稜柱結構組屬中高 度最高的三角稜柱第一稜柱211其高度Pdl在1()到120um 之間’第二高度Pd2的高度必須為pdl的三分之二以上； 第:稜柱211的寬度Pwl最適化為1〇到15〇咖第二棱柱 的I度Pw2則為8到12〇咖；整個複數稜柱結構組騰的 起點與終點必需等高，第一餘211與第二棱柱212交會 201115184 Γ7度HI必需大於3um以上。此複數稜柱結構組2㈣只為 仏兒月然非用以限制本發明，其可以有多個高度不同之 三角稜柱排列之。 另外’參照圖六所示’為了避免此複數稜柱結構組202b 與導光板接觸導致刮傷，最高的三角稜柱也就是第一稜柱 211頂端可设計為一弧形表面來保護，此弧形表面幻的曲 率半徑定義為0.5〜l〇um。 • 請參照圖七來闡述類透鏡孤型結構203b的結構，·如圖 八所不，類透鏡弧型結構島在第二表面迎為上凸的結 構為得到最好的光學效果，此類透鏡弧型結構2咖的直 徑Rw與高度Rd必須加以限制，如圖八所示，類透鏡弧型 、、Ό構203b的直徑rw隶適化範圍為1〇到2斷爪，高度記 則為正3到正l00um ’往上凸起以正值表示，往下凹限則以 負值表示；在本實補帽透舰魏構雇的直徑Rw • 分佈為20到80腿，高度盼分佈為正3到正20um。 為了更佳定義此類透鏡弧型結構2〇3a的效果，此類透 鏡弧型結構203a在基材另-面無稜柱結構2〇2存在時，以 JISK7361-1 : 1997標準方法測試，其光線穿透率在_以 上，以職施卞2_標準方法測試，其霧度在通以 上所構成。 第二實施例 11 201115184 請參照圖八所示’本發明較佳實施例之一種背光模組 20，其可應用上述複合光學元件4〇la。本實施例以複合光學 元件401a δ又置於側光式背光模組為例說明，然非用以限制 本發明。背光模組20包含一複合光學元件4〇ia、一反射片 102、一導光板103以及光源101。其中，光源1〇1係鄰設 於該導光板103 ’光源ιοί所發射的光線經由導光板反 射後而穿過複合光學元件401a，經由光學元件401a上的稜 _ 柱結構202a將光線折射向上，再經由類透鏡弧型結構2〇3a 將光線做第一次導正以及均勻化。而複合光學元件4〇ia已 於第一實施例詳述，於此不再贅述。 背光模組20雖以雙邊侧入光式背光模組為例說明，亦 可為單邊側入光式背光模組，此雙邊入光式背光模組的定義 為光源擺設於導光板兩端相對位置。光源1〇1可為冷陰極螢 光燈管（Cold Cathode Fluorescent Lamp，CCFL)、發光二極 • 體（Emitting Diode，LED )或電致發光元件 (Electroluminescent Device，ELD )。 第四實施例 請參照圖九所示，本發明較佳實施例之一種背光模組 21，其可應用上述複合光學元件4〇lb。本實施例以複合光 學元件401b設置於側光式背光模組為例說明，然非用以限 制本發明。背光模組21包含一複合光學元件4〇lb、一反射 12 201115184 片102、一導光板103以及至少一光源ιοί。其中，光源ιοί 係鄰設於該導光板103，光源101所發出的光線經由導光板 103反射後而穿過複合光學元件401b，經由光學元件4〇ib 上的棱柱結構202b將光線折射像上’再經由類透鏡弧型结 構203b將光線做第二次導正以及均勻化。而複合光學元件 401b已於第三實施例詳述，於此不再贅述。 第五實施例 請參照圖十所示’本發明較佳實施例之一種平面顯示 裝置30，其應用上述背光模組2〇與複合光學元件4〇la。平 面顯不裝置20包含一背光模組20以及一平面顯示面板 104。其中，平面顯示面板1〇4與背光模組2〇對應設置。而 背光模組20所具有的上述複合光學元件4〇la已於第一實施 例詳述，於此不再贅述。 第六實施例 請參照圖十一所示，本發明較佳實施例之一種平面顯 示裝置31，其應用上述背光模組21與複合光學元件4b。 平面顯示裝置31包含-背光模組21以及—平面顯示面板 104。其中，平面顯示面板1〇4與背光模組21對應設置。而 背光模組21所具有的上述複合光學元件4〇lb已於第二實施 例詳述，於此不再贅述。 综上所述’本發B月之複合光學元件、背光模組及平面顯The influence of the interference fringes between the light guide plate and the light-reducing module reduces the number of uses of the various diaphragms in the dimming module, and the assembly yield of the device is one of the current important issues. SUMMARY OF THE INVENTION There is a clock in the above-mentioned subject... The team (2) provides a composite optical component, a backlight module, and a flat display device, which can improve the brightness of the forward light and uniform light, and can also improve the sound of the flat display device. rate. Further, in order to achieve the above object, a composite optical element according to the present invention has a substrate, an age structure, and an invisible lens-like arc structure. The substrate has a -first surface and a second surface, the first surface is disposed opposite to the first system, the first surface fabric is dissimilar, and has a heterogeneous structure, and the first surface has an irregularly arranged lens-like arc structure. People - for the above purposes, Yixian County (4) - a kind of light-emitting county module package - composite optical components, - light guide plate and at least H composite optical element 201115184 pieces have a substrate, a prism structure and an irregular A lens-like arc structure. The substrate has a first surface and a second surface, and the first surface is opposite to the second surface. The first surface faces the light guide plate and has a columnar prism structure, and the second surface has an irregularly arranged lens-like arc. Structure. The light source is disposed on the side of the light guide plate to form a parallel structure on the human light surface of the composite wire element; a light emitted from the side light source of the light guide plate passes through the composite optical element. φ $ for the above purpose, a flat display device according to the present invention comprises a side entrance type moonlight module and a flat display panel. The backlight module has a composite optical component, a guide and at least a wire. The light emitted by the light rides through the composite wire element. The composite optical element has a filament, a prismatic structure, and an irregular lens-like arc structure. The substrate has a first surface and a first surface, and the second surface is opposite to the second surface, the first surface faces the light guide plate, has a columnar prism structure, and the second surface has an irregular arrangement of lenses. Structure. The flat display panel is corresponding to the backlight module. According to the above, a composite optical component, a backlight module and a flat display device are provided. The composite optics has a substrate, a prismatic structure, and an irregular lens-like arc structure. The substrate has a first surface and a first surface. The first surface is opposite to the second surface. The first surface faces the light guide plate and has a columnar prism structure. The second surface has an irregularly arranged lens-like arc shape. structure. A light emitted by the light source of the light guide plate passes through the columnar prism structure of the first surface 201115184 to converge the light upward, and then further converges and evenly spreads the light upward through the irregularly arranged lens-like arc structure on the second surface. Compared with the prior art, the composite optical component of the invention can achieve uniform light scattering effect and enhance the central light concentrating effect, and can avoid the occurrence of interference fringes and achieve the scratch resistance effect, and reduce the optical film in the backlight module. The number of sheets used to reduce the production cost of the cymbal and the assembly cost and assembly yield of the backlight module. [Embodiment] Hereinafter, a composite optical element, a backlight module, and a flat display device according to a preferred embodiment of the present invention will be described with reference to the accompanying drawings, wherein the same elements will be described with the same reference numerals. First Embodiment Referring to FIG. 2, a cross-sectional view of a first embodiment of the present invention is a composite optical component comprising a substrate 2 (Π, prism structure, and irregularity). The lens arc-shaped structural paper is composed of a common; the substrate 201 has a first surface 301 and a second surface 3〇2 disposed oppositely, the first surface 301 has a prismatic structure, and the second surface 3〇2 has a lens. The arc-shaped structure 203a. In the second embodiment, the relative position of the prism-like structure to the irregular lens-like arc-shaped structure 203a can be clearly illustrated in the oblique view of the composite optical component, and the lens-like arc-shaped structure is applied to the substrate. The second surface 302 is in an inverse relationship with the prism structure; FIG. 201115184 is the oblique view of the composite optical element 4〇1a, and the prism structure 2〇2a is located on the first surface 301 of the substrate 201. In this embodiment, the substrate 201 has a first surface 301 and a second surface 302. The first surface 301 and the second surface 〇2 are oppositely disposed. The material of the substrate 201 may be poly-p-benzene. Dicarboxylic acid oxalate ( Polyethylene Terephtiialate, PET), polycarbonate (p〇iyCarb〇nate 'PC), cyclic olefin copolymer (CyCHc 〇iefm c〇p〇lymer, c〇c), metal chrome-cycloolefin copolymer (metallocene- Based on the cyclic olefmcopolymer, mCOC), or a mixture thereof, and the thickness of the substrate 2〇1 is 12 to 5. In the present embodiment, the substrate 2〇1 is a polyethylene terephthalate having a thickness of 125/zm. (PolyethyleneTerephthalate, PET) is taken as an example. The first surface 301 has a plurality of prismatic structures 2〇2a, which can be coated with a light hardening resin on the first surface 3〇1 of the substrate 2〇1 by using a roller as a mold Thereafter, an embossing process is performed, which is formed by ultraviolet curing; the manufacturing method of the prism structure 202a is not limited thereto, and may be embossed on a mold having a photo-curable resin by using a roller, and then adhered to the substrate 201 after being cured. In order to obtain the best optical effect, the refractive index of the photohardenable resin must be between 1.4 and 1.8. Please refer to Figure 3 for the structure of the prism structure 202a. The prism structure 202a in Fig. 3 is a triangular tip facing downward. Columnar structure, designed by 0 1 and 02 to confirm the angle of refraction of incident light, 0 1 and 02 can be equal and 201115184 can be unequal, 01 plus (92 angle range is 9 to 140 degrees; prismatic structure 202a The width Pw is optimized from 1 〇 to 15 〇 l ;; in this implementation, (91 is equal to (92 ' < 91 plus (92 is 11 〇 degrees, and the width Pw of the prism structure 2 〇 2 is 20 um. Referring to FIG. 2 bis and FIG. 4 , the structure of the lens-like arc structure 2 〇 3 a is illustrated. As shown in FIG. 1 bis , such lens arc structures 2 〇 3 a are formed from the second surface 302 of the substrate 201. The height and density are not equal; as shown in FIG. 4, the arc-shaped structure 203a of the Ruben embodiment has a concave structure on the second surface 302. For the best optical effect, the diameter Rw of the lens structure 2〇3a is The height Μ must be limited. As shown in Figure 4, the diameter Rwl of the curved structure 2〇3a is optimized from 1〇 to 200um, and the height Rd is negative 3 to negative lOOura ' Λ 以Then, it is represented by a negative value; in the present embodiment, the diameter of the lens-like structure 2G3a is distributed from 2 () to 2, and the height Rd is distributed from minus 3 to minus 20 um. • Such a lens arc 2()3& is integrally formed on the second surface 302 of the substrate 201, and the second surface 302 of the substrate 2 can be coated with light using a roller or a soft mold as a mold. The resin is hardened and then embossed (emb〇ssing) and formed by ultraviolet curing; in order to obtain the best optical effect, the refractive index of the photohardenable resin must be between 1.4 and 18. In order to better define the effect of such a lens arc-shaped structure bird, such a lens arc structure 203a is tested in the presence of a prism-free structure 2〇2 on the other side of the substrate, and is tested by the standard method of 201115184 JISK7361-1: 1997. The permeability is 60% or more 'tested by the JIS K7361-1: 2000 standard method, and the haze is 30% or more. Second Embodiment Referring to FIG. 5 to FIG. 5 bis, another composite optical element 4 〇 lb according to the second embodiment of the present invention includes a substrate 201 , a plurality of prismatic structure groups 202 b and an irregular lens-like lens. The arc-shaped structures 203b are collectively formed. Since the relative positions and materials of the substrate 201, the plurality of prismatic structure groups 202b, and the lens-like curved structure 203b have been described in detail in the first embodiment, they will not be described again. In this embodiment, the prism structure group is different from the first embodiment in that the heights of the plurality of prism structure groups 2〇2b are not the same; please refer to FIG. 2, the first height Pdl of the first prism 211 and the second The second temperament Pd2 of the prism 212 is not the same. The plurality of prismatic structure groups 202b are composed of the first prism 211 and the second remainder 212. The angle optimum range of the prism is described in detail in the first embodiment. The plural prismatic structure group belongs to the highest height triangular prism. The first prism 211 has a height Pd between 1 () and 120 um. The height of the second height Pd2 must be more than two-thirds of the pdl. The width Pwl of the prism 211 is optimized to be 1 〇 to 15 〇. The second prism of the second prism is 8 to 12 ; coffee; the starting point and the end point of the entire complex prism structure must be equal, the first 211 and the second Prism 212 meets 201115184 Γ 7 degrees HI must be greater than 3um. The plurality of prismatic structure groups 2 (4) are only used to limit the present invention, and may be arranged in a plurality of triangular prisms having different heights. In addition, 'refer to FIG. 6', in order to avoid the scratch caused by the contact of the plurality of prismatic structure groups 202b with the light guide plate, the highest triangular prism, that is, the top end of the first prism 211 can be designed as an arc surface to protect the curved surface. The magic radius of curvature is defined as 0.5~l〇um. • Please refer to Figure 7 to illustrate the structure of the lens-like isolated structure 203b. As shown in Figure 8, the lens-like arc-shaped islands are convex on the second surface to obtain the best optical effect. The diameter Rw and the height Rd of the arc-shaped structure 2 must be limited. As shown in Fig. 8, the lens-like arc type and the diameter rw of the structure 203b are adapted to a range of 1 to 2 broken jaws, and the height is positive. 3 to positive l00um 'upward convexity is represented by a positive value, and the lower concave limit is represented by a negative value; in this real cap, the diameter of the ship is designed to be Rw • distributed to 20 to 80 legs, and the height is expected to be positive. 3 to positive 20um. In order to better define the effect of such a lens arc structure 2〇3a, such a lens arc structure 203a is tested by the standard method of JIS K7361-1: 1997 when the other surface of the substrate has no prismatic structure 2〇2. The penetration rate is above _, and it is tested by the standard method 2_ standard method, and its haze is formed above. Second Embodiment 11 201115184 Referring to FIG. 8, a backlight module 20 according to a preferred embodiment of the present invention can be applied to the above composite optical element 4〇1a. In this embodiment, the composite optical component 401a δ is placed in the edge-lit backlight module as an example, and is not intended to limit the present invention. The backlight module 20 includes a composite optical component 4A, a reflective sheet 102, a light guide plate 103, and a light source 101. The light source 1〇1 is disposed adjacent to the light guide plate 103. The light emitted by the light source ιοί is reflected by the light guide plate and passes through the composite optical element 401a, and the light is refracted upward through the prism structure 202a on the optical element 401a. The light is first guided and homogenized via the lens-like arc structure 2〇3a. The composite optical component 4A has been described in detail in the first embodiment, and will not be described again. The backlight module 20 is exemplified by a bilateral side-lighting backlight module, and can also be a single-side light-input backlight module. The bilateral light-integrating backlight module is defined as a light source disposed at opposite ends of the light guide plate. position. The light source 1〇1 may be a Cold Cathode Fluorescent Lamp (CCFL), an Emitting Diode (LED) or an Electroluminescent Device (ELD). Fourth Embodiment Referring to FIG. 9, a backlight module 21 according to a preferred embodiment of the present invention can be applied to the above composite optical element 4〇1b. In this embodiment, the composite optical component 401b is disposed on the edge-lit backlight module as an example, but is not intended to limit the present invention. The backlight module 21 includes a composite optical component 4 lb, a reflective 12 201115184 patch 102, a light guide panel 103, and at least one light source ιοί. The light source ιοί is disposed adjacent to the light guide plate 103. The light emitted by the light source 101 is reflected by the light guide plate 103 and passes through the composite optical element 401b, and the light is refracted by the prism structure 202b on the optical element 4〇ib. The light is then second guided and homogenized via the lens-like arc structure 203b. The composite optical component 401b has been described in detail in the third embodiment, and details are not described herein again. [Fifth Embodiment] Referring to Fig. 10, a flat display device 30 according to a preferred embodiment of the present invention is applied to the backlight module 2 and the composite optical element 4〇1a. The flat display device 20 includes a backlight module 20 and a flat display panel 104. The flat display panel 1〇4 is disposed corresponding to the backlight module 2〇. The above-mentioned composite optical element 4〇1a of the backlight module 20 has been described in detail in the first embodiment, and details are not described herein again. Sixth Embodiment Referring to Figure 11, a flat display device 31 according to a preferred embodiment of the present invention is applied to the backlight module 21 and the composite optical element 4b. The flat display device 31 includes a backlight module 21 and a flat display panel 104. The flat display panel 1〇4 is disposed corresponding to the backlight module 21. The composite optical component 4 lb 1b of the backlight module 21 has been described in detail in the second embodiment, and details are not described herein again. In summary, the composite optical component, backlight module and flat display of the present month
13 201115184 示裝置，係將利用-基材上雙面製作不同微結構的方式，利 用於側光源背光模組t，去除了下擴散片，使得出導光板的 光線因為沒有被擴散所以指向雜高。_向導光板之棱柱 結構將光收敛後’再利用出光面的類透鏡弧型結構再將光線 導正以及均勻擴散，所以兼具了輝度提高的功能外並且能避 免背光模轉疊時產生的絲_合縣，並且也朗類透鏡 弧狀結構形成的擴散效果而達到遮瑕的目的。 φ x上所述僅為舉例性’而非為限制性者。任何未脫離本 發明之精神絲_其進行之等絲改或變更，均應包 含於後附之申請專利範圍中。 【圖式簡單說明】 圖-係習知之-種背光模組及其光學膜片組之示意圖。 圖-之-係為依據本發明第—實施例之—種複合光學元件的 魯 結構剖面圖。 圖之一係為依據本發明第一實施例之一種複合光學元件的 結構上斜視圖。 圖-之二係為依據本發明第—實施例之—種複合光學元件的 結構下斜視圖。 系為示思圖，顯示依據本發明第一實施例之一種複合 光學元件的單元結構示意圖。 201115184 圖四係為―不意圖’顯示依據本發明第-實施例之-種複合 光學元件的單元結構示意圖。 圖五之-係為依據本發明第二實施例之一種複合絲元件的 結構剖面圖。 圖五之二係為依據本發明第二實施例之—種複合光學元件的 結構上斜視圖。 圖五之一係為依據本發明第二實施例之-種複合S學元件的 結構下斜視圖。 圖六係為-示意圖’顯示依據本發明第二實施例之一種複合 光學元件的單元結構示意圖。 圖七係為一示意圖，顯示依據本發明第二實施例之一種複合 光學元件的單元結構示意圖。 圖八係為依據本發明第三實施例之一種背光模纟且的結構側視 圖。 圖九係為依據本發明第四實施例之一種背光模組的結構側視 圖。 圖十係為依據本發明第五實施例之-種的平面顯示裝置結構 侧視圖。 圖十一係為依據本發明第六實施例之一種的平面顯示裝置結 構側視圖。13 201115184 The device will be used to make different microstructures on both sides of the substrate, and the side light source backlight module t is used to remove the lower diffusion sheet, so that the light of the light guide plate is not diffused, so the pointing light is high. . _The prism structure of the light guide plate converges the light and then re-uses the light-like lens-like arc structure to guide the light and evenly spread it. Therefore, it has the function of improving the brightness and avoiding the wire generated when the backlight mold is overlapped. _ He County, and also the diffusion effect formed by the lenticular lens structure to achieve the purpose of concealing. The above description on φ x is merely exemplary and not limiting. Any changes or modifications that do not depart from the spirit of the invention are intended to be included in the scope of the appended claims. [Simple description of the diagram] Figure - is a schematic diagram of a conventional backlight module and its optical film set. Figure-by-- is a cross-sectional view of a composite optical element according to a first embodiment of the present invention. One of the drawings is a structural oblique view of a composite optical element according to a first embodiment of the present invention. Fig. 2 is a perspective view showing the structure of a composite optical element according to a first embodiment of the present invention. It is a schematic diagram showing a unit structure of a composite optical element according to a first embodiment of the present invention. 201115184 Fig. 4 is a schematic view showing the structure of a unit of a composite optical element according to a first embodiment of the present invention. Figure 5 is a cross-sectional view showing the structure of a composite yarn element according to a second embodiment of the present invention. Figure 5 bis is a structural oblique view of a composite optical component in accordance with a second embodiment of the present invention. Figure 5 is a perspective view showing the structure of a composite S-sigma element according to a second embodiment of the present invention. Fig. 6 is a schematic view showing the unit structure of a composite optical element according to a second embodiment of the present invention. Figure 7 is a schematic view showing the structure of a unit of a composite optical element according to a second embodiment of the present invention. Figure 8 is a side view showing the structure of a backlight module according to a third embodiment of the present invention. Figure 9 is a side view showing the structure of a backlight module in accordance with a fourth embodiment of the present invention. Figure 10 is a side view showing the structure of a flat display device according to a fifth embodiment of the present invention. Figure 11 is a side view showing the structure of a flat display device according to a sixth embodiment of the present invention.
15 201115184 【主要元件符號說明】 101 :光源 102 :反射片 103 :導光板 104 :平面顯示面板 111 :下擴散片 • 112;第一稜鏡膜片 113 :第二棱鏡膜片 114 :上擴散片 104 :背光模組膜片總成 201 :基板 202a、202b :稜柱結構 203a、203b :類透鏡弧狀結構 • 211、212:稜柱結構 301 :基板之第一表面 302 :基板之第二表面 401a、401b :棱柱結構與類透鏡弧狀結構加上基板之總成 Pw :稜柱宽度 Pd :棱柱高度 201115184 Θ1、02 :稜柱結構與第一表面之一夾角15 201115184 [Description of main component symbols] 101: Light source 102: Reflecting sheet 103: Light guide plate 104: Flat display panel 111: Lower diffuser • 112; First diaphragm 113: Second prism film 114: Upper diffuser 104: backlight module diaphragm assembly 201: substrate 202a, 202b: prism structure 203a, 203b: lens-like arc structure; 211, 212: prism structure 301: first surface 302 of the substrate: second surface 401a of the substrate, 401b: prism structure and lens-like arc structure plus substrate assembly Pw: prism width Pd: prism height 201115184 Θ 1, 02: angle between the prism structure and the first surface
Rw :類透鏡弧狀結構表面直徑Rw : lens-like curved surface diameter
Rd :類透鏡弧狀結構高度 H1 :棱柱結構組中的棱柱高低差 R1 :稜柱結構組中棱柱尖端的弧型表面Rd : the height of the lens-like arc structure H1 : the height difference of the prism in the prism structure group R1 : the curved surface of the prism tip in the prism structure group
Pdl :棱柱結構組中最南棱柱的南度Pdl: South of the southernmost prism in the prismatic group
Pd2 :稜柱結構組中次高稜柱的高度Pd2: height of the second highest prism in the prismatic group
1717
Claims (1)
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW98135876A TW201115184A (en) | 2009-10-23 | 2009-10-23 | Compound optical element, backlight module and flat display apparatus |
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| Application Number | Priority Date | Filing Date | Title |
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| TW98135876A TW201115184A (en) | 2009-10-23 | 2009-10-23 | Compound optical element, backlight module and flat display apparatus |
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| TW201115184A true TW201115184A (en) | 2011-05-01 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI452389B (en) * | 2011-12-20 | 2014-09-11 | Tpv Display Technology Xiamen | A combination of puzzle-type light guide plates and a backlight module with a combination of puzzle-type light guide plates |
| TWI499816B (en) * | 2014-03-31 | 2015-09-11 | E Ink Holdings Inc | Display device |
| TWI514045B (en) * | 2011-12-08 | 2015-12-21 | Lms Co Ltd | Multilayer optical sheet module |
| TWI677997B (en) * | 2018-11-01 | 2019-11-21 | 奇景光電股份有限公司 | Illuminator |
| US11026303B2 (en) | 2018-10-30 | 2021-06-01 | Himax Technologies Limited | Illuminator |
-
2009
- 2009-10-23 TW TW98135876A patent/TW201115184A/en unknown
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI514045B (en) * | 2011-12-08 | 2015-12-21 | Lms Co Ltd | Multilayer optical sheet module |
| TWI452389B (en) * | 2011-12-20 | 2014-09-11 | Tpv Display Technology Xiamen | A combination of puzzle-type light guide plates and a backlight module with a combination of puzzle-type light guide plates |
| TWI499816B (en) * | 2014-03-31 | 2015-09-11 | E Ink Holdings Inc | Display device |
| US11026303B2 (en) | 2018-10-30 | 2021-06-01 | Himax Technologies Limited | Illuminator |
| TWI677997B (en) * | 2018-11-01 | 2019-11-21 | 奇景光電股份有限公司 | Illuminator |
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