TWM629984U - Optical axis deflection film and optical axis deflection light-emitting device using the same - Google Patents
Optical axis deflection film and optical axis deflection light-emitting device using the same Download PDFInfo
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Abstract
本創作係一種光軸偏轉膜與應用其之光軸偏轉發光裝置,該光軸偏轉膜包含一基材與多數第一光學體,該基材由透光材質製成且具有平行之迎光面與出光面,該等第一光學體設於該迎光面,各第一光學體包含一第一主斜面,其與該迎光面之間具有介於5°~45°之第一主夾角,且各該第一主夾角均相同,藉此,使光線在通過該光軸偏轉膜後偏向射出。The present invention relates to an optical axis deflection film and an optical axis deflection light-emitting device using the same. The optical axis deflection film includes a base material and a plurality of first optical bodies. The base material is made of light-transmitting material and has parallel light-facing surfaces. and the light-emitting surface, the first optical bodies are arranged on the light-facing surface, and each first optical body includes a first main inclined surface, which has a first main angle between 5° and 45° with the light-facing surface. , and each of the first principal angles are the same, so that the light is deflected and emitted after passing through the optical axis deflecting film.
Description
本創作係關於光學膜與應用其之發光裝置,特別是指一種光軸偏轉膜與應用該光軸偏轉膜之光軸偏轉發光裝置。This creation is about an optical film and a light-emitting device using the same, especially an optical axis deflection film and an optical axis deflection light-emitting device using the optical axis deflection film.
一般顯示器產品以面板法線作為零度角中心軸設計為中心軸對稱型光場,但隨著顯示器的製造廠商開始進入利基型應用市場,這樣的亮度分布設計無法滿足主要觀賞視角不在中心軸上的非常規偏軸型應用需求。為了滿足偏軸型光場設計的顯示器應用需求,有必要開發一種光學偏轉元件加入現有顯示器模組,在影響現有製程最小程度的前提下改變顯示器的亮度分布。Generally, display products are designed with the panel normal as the center axis of the zero-degree angle as the central axis-symmetric light field. However, as display manufacturers begin to enter the niche application market, such a brightness distribution design cannot satisfy the main viewing angle that is not on the central axis. unconventional off-axis applications. In order to meet the display application requirements of off-axis light field design, it is necessary to develop an optical deflection element to be added to the existing display module to change the brightness distribution of the display with minimal impact on the existing process.
本創作之一目的在於提供一種光軸偏轉膜與應用其之光軸偏轉發光裝置,該光軸偏轉膜可改變入射光線的行進方向使其偏向射出,應用在該光軸偏轉發光裝置可使其具有偏軸型光場的亮度分布,並在對現有製程最小影響程度的前提下使顯示器產品符合市場的特定需求。One purpose of the present invention is to provide an optical axis deflection film and an optical axis deflection light-emitting device using the same. The optical axis deflection film can change the traveling direction of the incident light to make it deflected out. When applied to the optical axis deflection light-emitting device, it can make Brightness distribution with an off-axis light field, and allows display products to meet market-specific needs with minimal impact on existing processes.
為了達成上述目的,本創作之光軸偏轉膜包含有一基材、以及複數個第一光學體,該基材由透光材質製成且具有互相平行之一迎光面與一出光面,該等第一光學體設於該迎光面,各第一光學體包含一第一主斜面,該第一主斜面與該迎光面之間具有介於5°~45°之第一主夾角,且各該第一主夾角均相同,藉此,使光線在通過該光軸偏轉膜後偏向射出。In order to achieve the above purpose, the optical axis deflecting film of the present invention includes a base material and a plurality of first optical bodies. The base material is made of a light-transmitting material and has a light-facing surface and a light-emitting surface that are parallel to each other. The first optical bodies are arranged on the light-facing surface, each of the first optical bodies includes a first main inclined surface, and the first main inclined surface and the light-facing surface have a first main angle between 5° and 45°, and Each of the first principal angles is the same, so that the light is deflected and emitted after passing through the optical axis deflecting film.
本創作之光軸偏轉發光裝置包含一光源模組及該光軸偏轉膜,該光源模組係自發光型光源模組或非自發光型光源模組,該光源模組具有一出光側,該光軸偏轉膜設於該光源模組之出光側以偏折該光源模組發出的光線的角度,藉以使該光軸偏轉發光裝置的光場分布從中心軸對稱型光場轉變為偏軸型的亮度分布的光場。The optical axis deflection light-emitting device of the present invention includes a light source module and the optical axis deflection film. The light source module is a self-luminous light source module or a non-self-luminous light source module. The light source module has a light emitting side. The optical axis deflecting film is arranged on the light emitting side of the light source module to deflect the angle of the light emitted by the light source module, so as to make the light field distribution of the optical axis deflection light-emitting device change from the central axis-symmetric light field to the off-axis light field The brightness distribution of the light field.
以下藉由多個較佳實施例配合圖式,詳細說明本創作的技術內容及特徵。請參閱圖1與圖1A,其係本創作一較佳實施例所提供之光軸偏轉膜10,包含一基材11、複數個第一光學體12及複數個第二光學體13。該基材11具有互相平行之一迎光面111與一出光面112。該基材11由透光材質製成,所述透光材質可為聚對苯二甲酸乙二酯(PET)、聚碳酸酯(PC)或聚甲基丙烯酸甲酯(PMMA)。在本創作一些實施例中,該基材11、該等第一光學體12與該等第二光學體13係一體成型且為相同材質。
The technical content and features of the present creation will be described in detail below by means of a plurality of preferred embodiments in conjunction with the drawings. Please refer to FIG. 1 and FIG. 1A , which is an optical
在本實施例中,該等第一光學體12呈長條狀平行排列於該迎光面111上。各該第一光學體12的橫剖面為三角形,且各該第一光學體12包含一面積相較其餘表面為大之第一主斜面121。該第一主斜面121具有一傾斜方向D1。同時,該第一主斜面121與該迎光面111之間具有一第一主夾角θ 1。該第一主夾角θ 1的範圍介於5°~45°之間,較佳範圍介於10°~40°之間。該等第一光學體12的第一主夾角θ 1均相同。
In this embodiment, the first
在本實施例中,該等第二光學體13亦呈長條狀平行排列於該出光面112上。各該第二光學體13的橫剖面為三角形,且各該第二光學體13包含一面積相較其餘表面為大之第二主斜面131。該第二主斜面131具有一傾斜方向D2,且該第二主斜面131與該出光面112之間具有一第二主夾角θ 2。該第二主夾角θ 2的範圍介於3°~45°,較佳範圍介於10°~40°之間。該等第二光學體13的第二主夾角θ 2可為相同或不同,根據實驗結果,該等第二光學體13具有不同之第二主夾角θ 2具有較佳的光偏折效果,且該第二主夾角θ 2的變異性越高,光偏折效果越好。
In this embodiment, the second
值得注意地是,本創作之光軸偏轉膜10的各該第一光學體12的第一主斜面121的傾斜方向D1與各該第二光學體13的第二主斜面131的傾斜方向D2實質上相同。為了明確定義上述「傾斜方向」,請參閱圖2,以該第一光學體12為例,該第一主斜面121與一水平面HP(與迎光面111平行)相交而在該第一主斜面121上形成一直線S,垂直該直線S並沿著該第一主斜面121向下形成一傾斜線D0,該傾斜線D0在該水平面HP上的投影線所指方向即為該第一主斜面121的傾斜方向D1。It is worth noting that the inclination direction D1 of the first main
藉此,來自圖1A下方的光線,向上穿過該光軸偏轉膜10後,將朝圖面左方偏折射出,從而達成本創作之目的。在本實施例中,該等第一光學體12與該等第二光學體13的形狀皆為三角柱體,但不以此為限,該等第一光學體12的形狀可不同於該等第二光學體13的形狀,且該等第一光學體12或該等第二光學體13的形狀可為橫剖面是梯形、扇形、多邊形或其他形狀的長條狀柱體,只要能形成與該基材11之間具有該第一主夾角θ1的該第一主斜面121或能形成與該基材11之間具有該第二主夾角θ2的該第二主斜面131即可。另外,該第一主斜面121或該第二主斜面131亦可為弧面,只要其外切線能與該基材11形成該第一主夾角θ1或該第二主夾角θ2即可。Thereby, the light from the bottom of FIG. 1A will be deflected and refracted toward the left of the drawing surface after passing upward through the optical
如圖3所示,以該第一光學體12a, 12b, 12c或12d為例,該第一光學體12a, 12b, 12c或12d可為長條狀柱體且剖面分別為如態樣(a)所示之梯形、如態樣(b)所示之扇形、如態樣(c)所示之多邊形,或態樣(d)所示之弧面多邊形。其中,態樣(d)之第一光學體12d的第一主斜面121d為弧面,該弧面121d之一外切線L會與如圖1A中所示之該基材11的迎光面111形成該第一主夾角θ1。As shown in FIG. 3, taking the first
在本創作之較佳實施例中,該基材11之霧度可介於0.1%~99%之間,然以15%以下較佳。在本創作之較佳實施例中,該等第一光學體12以及該等第二光學體13的材質為成分主要是UV光固化樹脂,折射率為1.59,惟1.38~1.95均可。In a preferred embodiment of the present invention, the haze of the
在本創作一些實施例中,該基材11內部包含有一可電性調控之液晶層。In some embodiments of the present invention, the
請參閱圖4與圖4A,其係本創作另一較佳實施例所提供之光軸偏轉膜20,包含一基材21、複數個第一光學體22及複數個第二光學體23,在本實施例中,該等第一光學體22與該等第二光學體23分別呈顆粒狀陣列分佈在該基材21的迎光面211與出光面212上。Please refer to FIG. 4 and FIG. 4A , which is an optical axis deflection film 20 provided by another preferred embodiment of the present invention, comprising a
在本實施例中,各該第一光學體22的形狀為四角錐,且具有一第一主斜面221以及一第一副斜面222。該第一副斜面222與該第一主斜面221之傾斜方向(未標示)不同。其中,該第一主斜面221與該迎光面211之間具有一第一主夾角(未標示),該第一副斜面222與該迎光面211之間具有一第一副夾角(未標示)。該第一主夾角介於5°~45°之間,而該第一副夾角介於5°~45°之間。該第一主夾角與該第一副夾角的較佳範圍介於10°~40°之間。In this embodiment, each of the first
在本實施例中,各該第二光學體23的形狀亦為四角錐,且具有一第二主斜面231以及一第二副斜面232。該第二副斜面232與該第二主斜面231之傾斜方向(未標示)不同。其中,該第二主斜面231與該出光面212之間具有一第二主夾角(未標示),該第二副斜面232與該出光面212之間具有一第二副夾角(未標示)。該第二主夾角介於3°~45°之間,而該第二副夾角介於3°~45°之間。該第二主夾角與該第二副夾角的較佳範圍介於10°~40°之間。In this embodiment, the shape of each of the second
前述二實施例中,該第一光學體12與該第二光學體13為一維延伸排列,所產生之光場調整效果為單一維度,相對地,該第一光學體22與該第二光學體23的排列為二維陣列,則可產生多維度之光場調整效果,在本實施例中,不僅該等第一光學體22的第一主斜面221與該等第二光學體23的第二主斜面231的傾斜方向相同,該等第一光學體22的第一副斜面222與該等第二光學體23的第二副斜面232之傾斜方向亦相同。惟,在本創作其他實施例中,該等第一光學體22的第一主斜面221與該等第二光學體23的第二主斜面231的傾斜方向相同,但是該等第一光學體22的第一副斜面222與該等第二光學體23的第二副斜面232之傾斜方向並不相同,如此可產生更複雜的光場調整效果。In the foregoing two embodiments, the first
在本創作其他實施例中,該等第一光學體呈長條狀平行排列在該基材之迎光面而該等第二光學體呈顆粒狀陣列分佈在該基材之出光面。在本創作其他實施例中,該等第一光學體呈顆粒狀陣列分佈在該基材之迎光面而該等第二光學體呈長條狀平行排列在該基材之出光面。所述顆粒狀不以四角錐為限,可為其他角錐體、角柱體或扇形體等形狀,只要能形成與該基材之間具有該第一主夾角的該第一主斜面或與該基材之間具有該第二主夾角的第二主斜面即可。In other embodiments of the present invention, the first optical bodies are arranged in strips in parallel on the light-facing surface of the substrate, and the second optical bodies are distributed in a granular array on the light-emitting surface of the substrate. In other embodiments of the present invention, the first optical bodies are arranged in a granular array on the light-facing surface of the substrate, and the second optical bodies are arranged in strips and parallel to the light-emitting surface of the substrate. The particle shape is not limited to a quadrangular pyramid, and can be other shapes such as pyramids, prisms or sectors, as long as it can form the first main slope with the first main angle between the base material or the base material. The second main slope with the second main angle between the materials is sufficient.
如圖5所示,以該第一光學體22a, 22b或22c為例,該第一光學體22a, 22b或22c的形狀分別可為如態樣(e)所示之多角錐體、如態樣(f)所示之楔型體或如態樣(g)所示之扇形體,且在該些實施態樣中,各該第一主斜面221a, 221b或221c皆與如圖4中所示之該基材21之間形成該第一主夾角。其中,態樣(e)之第一光學體22a更具有一第一副斜面222a,該第一副斜面222a與該第一主斜面221a之傾斜方向不同,且該第一副斜面222a與如圖4中所示之該基材21的該迎光面211之間具有該第一副夾角。As shown in FIG. 5, taking the first
本創作之光軸偏轉發光裝置包含一光源模組及該光軸偏轉膜,該光源模組具有一出光側,該光軸偏轉膜設於該光源模組之出光側以偏折光線角度。該光源模組可為自發光型光源模組或非自發光型光源模組,所述自發光型光源模組可為電激發光(EL)面板、有機發光二極體(OLED)面板、迷你發光二極體(Mini-LED)面板或微發光二極體(Micro-LED)面板。The optical axis deflection light-emitting device of the present invention includes a light source module and the optical axis deflection film, the light source module has a light exit side, and the optical axis deflection film is arranged on the light exit side of the light source module to deflect the light angle. The light source module can be a self-luminous light source module or a non-self-luminous light source module, and the self-luminous light source module can be an electroluminescence (EL) panel, an organic light-emitting diode (OLED) panel, a miniature Light Emitting Diode (Mini-LED) panel or Micro-Light Emitting Diode (Micro-LED) panel.
在本創作一些實施例中,該光源模組與該光軸偏轉膜之間具有空氣作為間隔或以透光度大於85%的光學膠(OCA)相互黏著。 In some embodiments of the present invention, the light source module and the optical axis deflecting film are spaced by air or adhered to each other by optical adhesive (OCA) with a transmittance greater than 85%.
請參閱圖6,其係本創作一較佳實施例所提供之光軸偏轉發光裝置100,包含一光源模組200與該光軸偏轉膜10,該光源模組200為非自發光型光源模組,具有一出光側210。該光軸偏轉膜10設於該光源模組200之出光側210。該光源模組200包含一光源220、一稜鏡片230、一導光板240及一反射片250。該稜鏡片230具有多數平行該等第二光學體13排列之稜鏡柱233以使光線集中。該導光板240位於該稜鏡片230的入光側。該光源220位於該導光板240之一側面。該導光板240具有一背側241、一相反於該背側241之出光側242、以及多數剖面呈三角形之第三光學體243位於該導光板的出光側242上。該等第三光學體243可呈長條狀平行排列或呈顆粒狀陣列分佈。該反射片250位於該導光板的背側241,用以反射來自該導光板240之光。藉此,該光軸偏轉發光裝置100具有偏軸型光場的亮度分布,並且於傳統光源模組200之出光側210放上該光軸偏轉膜10,即可達成光軸偏轉之功效,在對現有製程最小影響程度的前提下使顯示器產品符合市場的特定需求。
Please refer to FIG. 6 , which is an optical axis deflection light-emitting
事實上,本創作之光軸偏轉膜10與不同結構的光源模組搭配,均可偏轉顯示器的光軸。請參閱圖7,其係本創作另一較佳實施例所提供之光軸偏轉發光裝置100’,包含一光源模組300與該光軸偏轉膜10,該光源模組300為非自發光型光源模組,具有一出光側310。該光軸偏轉膜10設於該光源模組300之出光側310。該光源模組300包含一光源320、二稜鏡片330,330a、一導光板340及一擴散片350。該二稜鏡片330,330a上分別具有多數平行排列的稜鏡柱331,331a以使光線集中。其中,該稜鏡片320上的該等稜鏡柱331平行該等第二光學體23的延伸方向。另一稜鏡片330a上的該等稜鏡柱331a則設置為垂直該等第二光學體23的延伸方向。該導光板340及該擴散片350位於該二稜鏡片330, 330a的入光側,該光源320位於該導光板340之一側面,該擴散片350係用以使光線均勻擴散。In fact, the optical
在本創作其他實施例中,該光軸偏轉發光裝置可包含更多數量的稜鏡片,各該稜鏡片上具有多數平行排列的稜鏡柱,且該等稜鏡片中只要其中至少任一者的稜鏡柱設置為平行該光軸偏轉膜20的該等第二光學體23的延伸方向即可。In other embodiments of the present invention, the optical axis deflecting light-emitting device may include a larger number of wafers, each of the wafers has a plurality of wafers arranged in parallel, and only at least any one of the wafers has a larger number of wafers. The poles may be arranged parallel to the extending direction of the second
藉由上述設計,本創作所提供之光軸偏轉膜10, 20可偏折光線角度,使應用其之光軸偏轉發光裝置100, 100’具有偏軸型光場分布,從而達成本創作的目的。基於本創作之設計精神,該光軸偏轉膜10, 20上的微結構設計及該光軸偏轉發光裝置100, 100’的配置方式可有如以上所述之各種實施態樣之變化,圖式中各元件的數量、尺寸比例僅為示意,實際製造時可依需要加以調整,該光軸偏轉膜10, 20至少具有該等第一光學體12, 22與該等第二光學體13, 23其中之一即可,舉凡此等可輕易思及的結構變化,均應為本創作申請專利範圍所涵蓋。Through the above design, the optical
100,100’:光軸偏轉發光裝置 100,100': Optical axis deflection light-emitting device
200,300:光源模組 200,300: Light source module
210,310:出光側 210, 310: light-emitting side
220,320:光源 220,320: light source
230,330,330a:稜鏡片 230, 330, 330a: Pills
233,331,331a:稜鏡柱 233, 331, 331a: Pillars
3311:端面 3311: End face
240:導光板 240: light guide plate
241:導光板的迎光側 241: The light-facing side of the light guide plate
242:導光板的出光側 242: The light-emitting side of the light guide plate
243:第三光學體 243: Third Optical Body
250:反射片 250: Reflector
350:擴散片 350: Diffuser
10,20:光軸偏轉膜 10,20: Optical axis deflection film
11,21:基材 11,21: Substrate
111,211:迎光面 111, 211: Greeting side
112,212:出光面 112,212: light-emitting surface
12,12a,12b,12c,12d,22,22a,22b,22c:第一光學體 12, 12a, 12b, 12c, 12d, 22, 22a, 22b, 22c: first optical body
121,121a,121b,121c,121d,221,221a,221b,221c:第一主斜面 121, 121a, 121b, 121c, 121d, 221, 221a, 221b, 221c: The first main slope
122,222,222a:第一副斜面 122, 222, 222a: The first secondary slope
13,23:第二光學體 13,23: Second Optical Body
131,231:第二主斜面 131, 231: Second main slope
132,232:第二副斜面 132,232: Second sub-slope
HP:水平假想面 HP: Horizontal imaginary plane
S:直線 S: straight line
D0:傾斜線 D0: inclined line
D1,D2:傾斜方向 D1, D2: Tilt direction
θ 1:第一主夾角 θ 1: The first principal angle
θ 2:第二主夾角 θ 2: The second principal angle
L:外切線 L: Outer tangent
圖1為本創作一較佳實施例之光軸偏轉膜之立體圖; 圖1A為圖1中光軸偏轉膜之側面示意圖; 圖2為圖1中光軸偏轉膜之第一光學體之結構示意圖; 圖3為本創作之光軸偏轉膜之第一光學體的多種實施態樣的側面示意圖; 圖4為本創作另一較佳實施例之光軸偏轉膜之立體圖; 圖4A為圖4中光軸偏轉膜之第一光學體與第二光學體的結構示意圖; 圖5為本創作之光軸偏轉膜之第一光學體的多種實施態樣的立體圖; 圖6為本創作一較佳實施例之光軸偏轉發光裝置的結構示意圖; 圖7為本創作另一較佳實施例之光軸偏轉發光裝置的結構示意圖。 FIG. 1 is a perspective view of an optical axis deflecting film according to a preferred embodiment of the creation; 1A is a schematic side view of the optical axis deflecting film in FIG. 1; FIG. 2 is a schematic structural diagram of the first optical body of the optical axis deflection film in FIG. 1; 3 is a schematic side view of various implementations of the first optical body of the optical axis deflecting film of the present invention; FIG. 4 is a perspective view of an optical axis deflecting film according to another preferred embodiment; 4A is a schematic structural diagram of the first optical body and the second optical body of the optical axis deflection film in FIG. 4; 5 is a perspective view of various implementations of the first optical body of the optical axis deflecting film of the present invention; 6 is a schematic structural diagram of an optical axis deflection light-emitting device according to a preferred embodiment; FIG. 7 is a schematic structural diagram of an optical axis deflection light-emitting device according to another preferred embodiment.
10:光軸偏轉膜 10: Optical axis deflection film
11:基材 11: Substrate
111:迎光面 111: Greeting surface
112:出光面 112: light-emitting surface
12:第一光學體 12: First Optical Body
121:第一主斜面 121: The first main slope
13:第二光學體 13: Second Optical Body
131:第二主斜面 131: Second main slope
D1,D2:傾斜方向 D1, D2: Tilt direction
θ 1:第一主夾角 θ 1: The first principal angle
θ 2:第二主夾角 θ 2: The second principal angle
Claims (28)
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