TWI411819B - An optical film having a surface structure - Google Patents
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本發明係有關光學膜，尤其是有關用於液晶顯示器(LCD,Liquid Crystal Display)之背光系統或其它需要之具有複數稜鏡柱結構的光學膜者。The present invention relates to optical films, and more particularly to backlight systems for liquid crystal displays (LCDs) or other optical films having a plurality of pillar structures.
請參閱圖1所示。一般液晶顯示器之背光系統，包括冷陰極燈管(CCFL)11、導光板(LGP)12、下擴散片(Bottom diffuser)13、聚光片(Prism sheet)14、上擴散片(Top diffuser)15及反射板(Reflector)16所組成。Please refer to Figure 1. A backlight system for a general liquid crystal display, including a cold cathode fluorescent lamp (CCFL) 11, a light guide plate (LGP) 12, a bottom diffuser 13, a prism sheet 14, and an upper diffuser. And a reflector (Reflector) 16 is composed.
請參閱圖2所示。習知聚光片14係由複數個縱向平行排列的三角形之稜鏡柱(Prism rod)141及基材(Substrate)142所組成。稜鏡柱141結合於基材142的一側邊。每一菱鏡柱141的高度、寬度相同，且稜鏡柱141的稜線高度不變，走向為直線，稜線兩側的斜面相對稱。Please refer to Figure 2. The conventional concentrating sheet 14 is composed of a plurality of longitudinally arranged triangular pillars 141 and a substrate 142. The mast 141 is bonded to one side of the substrate 142. The height and width of each of the prism columns 141 are the same, and the height of the ridge line of the mast 141 is constant, the direction is a straight line, and the slopes on both sides of the ridge line are symmetrical.
請參閱圖3所示。聚光片14之光學路徑模式有三種：Please refer to Figure 3. There are three optical path modes for the concentrating sheet 14:
光線143由稜鏡柱141內約在垂直稜鏡柱141底面之虛擬垂直軸140的±4°內射入時，受稜鏡斜面柱141的全反射現象之影響，經兩次全反射後，回收至背後光源方向，繼續擴散傳播利用；When the light ray 143 is incident within ±4° of the virtual vertical axis 140 about the bottom surface of the vertical mast 141 in the mast 141, it is affected by the total reflection phenomenon of the bevel column 141, after two total reflections. Recycling to the direction of the back light source and continuing to spread and utilize;
光線144經由兩組稜鏡柱141的折射後，再回收至背後光源方向，繼續擴散傳播利用；及The light ray 144 is refracted by the two sets of masts 141, and then recovered to the direction of the back light source to continue the diffusion and utilization;
光線145經由稜鏡柱141的斜面折射出，此光路模式有集中光線之作用；如圖3中所示，由稜鏡柱141的視角80°範圍內折射出的光線才有利用價值。The light ray 145 is refracted by the slope of the mast 141, which has a concentrated light effect; as shown in FIG. 3, the light refracted by the angle of view of the mast 141 within 80° is useful.
請參閱圖4所示。上述具有複數縱向平行規律排列的稜鏡柱141的聚光片14，當其上方疊置一上擴散片15或另一聚光片等上層材料膜時，會產生如下問題：Please refer to Figure 4. The concentrating sheet 14 having the plurality of longitudinally parallel-arranged prisms 141 has the following problems when an upper material film such as the upper diffusion sheet 15 or another concentrating sheet is stacked thereon:
1.容易發生光色散的現象。1. It is prone to light dispersion.
2.容易發生疊紋的現象。2. It is prone to the phenomenon of moiré.
3.聚光片14與上層的上擴散片15之間會有沾粘的問題。3. There is a problem of sticking between the condensing sheet 14 and the upper upper diffusion sheet 15.
4.聚光片14與上擴散片15沾粘的區域151，在大視角觀察時有白斑的現象。4. The region 151 where the condensing sheet 14 and the upper diffusion sheet 15 are adhered has a phenomenon of white spots when viewed from a large viewing angle.
5.聚光片14於沾粘的區域151的峰(Peak)直接與上擴散片15等上層材料膜接觸容易刮傷上層材料膜。5. The peak of the condensing sheet 14 in the adhered region 151 is directly in contact with the upper material film such as the upper diffusion sheet 15 to easily scratch the upper material film.
美國專利第5,919,551號所揭示一種變化間距結構的光學膜(Variable pitch structured optical film)，包含至少三個相鄰稜鏡柱之間具有第一種峰間距(Peak pitch)的第一組稜鏡柱，及第二組稜鏡柱；第一組稜鏡柱的峰間距不同於第二組稜鏡柱的峰間距，以減少莫爾干涉條紋(Moire interference patterns)的能見度。A variable pitch structured optical film disclosed in US Pat. No. 5,919,551, comprising a first group of masts having a first peak pitch between at least three adjacent masts. And a second set of masts; the peak spacing of the first set of masts is different from the peak spacing of the second set of masts to reduce the visibility of Moire interference patterns.
為了使光學膜具有新的結構，減少光學膜與其他材料膜相疊時容易發生光色散及疊紋的現象，而提出本發明。In order to make the optical film have a new structure and to reduce the phenomenon of light dispersion and embossing when the optical film is overlapped with other material films, the present invention has been proposed.
本發明的主要目的，在提供一種具有表面結構的光學膜，可減少光學膜與其他材料膜相疊時發生光色散的現象。SUMMARY OF THE INVENTION A primary object of the present invention is to provide an optical film having a surface structure which can reduce the phenomenon of light dispersion when an optical film is overlapped with other material films.
本發明的另一目的，在提供一種具有表面結構的光學膜，可減少光學膜與其他材料膜相疊時發生疊紋的現象。Another object of the present invention is to provide an optical film having a surface structure which can reduce the occurrence of moiré when an optical film is overlapped with other material films.
本發明的另一目的，在提供一種具有表面結構的光學膜，可減少光學膜與其他材料膜相疊時產生沾粘的問題。Another object of the present invention is to provide an optical film having a surface structure which can reduce the problem of sticking when an optical film is overlapped with other material films.
本發明的又一目的，在提供一種具有表面結構的光學膜，可減少光學膜其他材料膜相疊時的沾粘區域，在大角度觀察時產生白斑的現象。Still another object of the present invention is to provide an optical film having a surface structure which can reduce a sticking region when other film materials of an optical film are stacked, and which causes white spots when viewed at a large angle.
本發明的又一目的，在提供一種具有表面結構的光學膜，可減少光學膜刮傷上層材料膜的下表面，有助於增加包含聚光片及上層材料膜等之電子產品的製造良率。Still another object of the present invention is to provide an optical film having a surface structure, which can reduce the scratching of the lower surface of the upper material film by the optical film, and contribute to increase the manufacturing yield of the electronic product including the concentrating sheet and the upper material film. .
本發明具有表面結構的光學膜，係用以減少光學膜與其他材料膜相疊時發生光色散及疊紋的現象者，包括一基材，可供光線穿射通過；該基材的一表面包含有複數縱向接***行排列的複數光控制元件；該等光控制元件分別具有峰；該等相鄰的峰之間分別具有谷；該等相鄰的谷之間分別具有谷間距；該等峰分別具有峰頂角；該等谷分別具有谷底角；其特徵在於：該等光控制元件的峰的高度呈週期性的變化；可有效減少兩相疊光學膜的光色散現象，並可減少疊紋發生的機會。The optical film having the surface structure of the invention is used for reducing the phenomenon of light dispersion and moiré when the optical film overlaps with other material films, and comprises a substrate for allowing light to pass through; a surface of the substrate a plurality of light control elements comprising a plurality of longitudinally adjacent parallel arrays; the light control elements each having a peak; the adjacent peaks each having a valley; the adjacent valleys each having a valley spacing; the peaks are respectively Having a peak angle; the valleys each having a valley angle; wherein the heights of the peaks of the light control elements are periodically changed; the light dispersion of the two-phase optical film can be effectively reduced, and the pattern can be reduced The chance of happening.
本發明的其他目的、功效，請參閱圖式及實施例，詳細說明如下。For other purposes and functions of the present invention, please refer to the drawings and the embodiments, which are described in detail below.
請參閱圖5所示。本發明具有表面結構的光學膜，係用以減少光學膜與其他材料膜相疊時發生光色散及疊紋的現象者。本發明第一實施例之具有表面結構的光學膜30，包括：一基材31，可供光線穿射通過。基材31的一表面包含有複數縱向接***行排列的光控制元件，例如稜鏡柱32、33、34、35；各個稜鏡柱32、33、34、35分別具有兩個斜面形成一個獨立的峰(Peak)321、331、341、351；相鄰的兩個峰321、331、341、351之間的兩斜面分別形成獨立的谷(Valley)36、37、38；每個峰321、331、341、351分別具有峰高322、332、342、352；相鄰的谷36、37、38之間分別具有谷間距361、371。Please refer to Figure 5. The optical film having the surface structure of the invention is used for reducing the phenomenon of light dispersion and moiré when the optical film overlaps with other material films. The optical film 30 having a surface structure according to the first embodiment of the present invention comprises: a substrate 31 through which light can pass therethrough. A surface of the substrate 31 comprises a plurality of longitudinally adjacent parallel light control elements, such as masts 32, 33, 34, 35; each of the masts 32, 33, 34, 35 has two bevels to form an independent Peaks 321, 331, 341, 351; the two slopes between the adjacent two peaks 321, 331, 341, 351 form independent valleys 36, 37, 38; each peak 321, 331 341 and 351 respectively have peak heights 322, 332, 342, and 352; and adjacent valleys 36, 37, and 38 have valley spacings 361 and 371, respectively.
本實施例光學膜30的特徵在於：每個峰321、331、341、351的峰頂角(Dihedral angle)與每個谷36、37、38的谷底角均相等；複數個峰321、331、341、351的峰高322、332、342、352的高度呈週期性的變化，例如呈弦波式變化，如圖中連接各峰的虛線所示者；且複數個谷36、37、38之間的谷間距361、371隨峰高的變化呈等比變化。The optical film 30 of this embodiment is characterized in that the peak angle of each peak 321 , 331 , 341 , 351 is equal to the valley angle of each valley 36 , 37 , 38 ; a plurality of peaks 321 , 331 , The heights of the peak heights 322, 332, 342, and 352 of 341 and 351 are periodically changed, for example, in a sinusoidal manner, as shown by the broken lines connecting the peaks in the figure; and the plurality of valleys 36, 37, and 38 are The inter-valley spacings 361, 371 vary proportionally with changes in peak height.
本實施例光學膜30的任兩稜鏡柱的峰高之間的高度差在5um(微米)至1um之間；最高的峰高的高度為最低的峰高的高度的1.2倍至1.05倍之間；每一次峰高的高度變化週期約包含40~400個峰；峰頂角的夾角範圍為70度至110度之間。本實施例光學膜30的相鄰兩稜鏡柱的谷間距約在52um至48um之間。本實施例的峰頂角可為圓弧角，如圖8所示光學膜50的各光控制元件52的峰521呈圓弧狀者。The height difference between the peak heights of any two columns of the optical film 30 of the present embodiment is between 5 um (micrometers) and 1 um; the height of the highest peak height is 1.2 times to 1.05 times the height of the lowest peak height. The height change period of each peak height includes about 40 to 400 peaks; the angle of the peak angle ranges from 70 degrees to 110 degrees. The valley spacing of adjacent two masts of the optical film 30 of this embodiment is between about 52 um and 48 um. The peak angle of the present embodiment may be an arcuate angle, and as shown in Fig. 8, the peaks 521 of the respective light control elements 52 of the optical film 50 are arcuate.
當光學膜30與其他的光學膜互相堆疊時，由於光學膜30的稜鏡柱32、33、34、35的峰高322、332、342、352的高度及谷間距361、371呈週期性的變化，使由光學膜30的上方射出的光線呈不規則的變化，較不會產生光色散及疊紋的現象；且由於光學膜30的稜鏡柱32、33、34、35的峰高322、332、342、352的高度呈週期性的變化，呈如弦波式變化的設計，當光學膜40的上端堆疊另一光學膜時，另一光學膜的底邊只接觸少數凸出的光控制元件的峰，如圖5中稜鏡柱32的峰321，而不會接觸較凹陷的稜鏡柱34、35的峰341、351；因此可大幅減少光學膜30與其上端的光學膜的接觸面積，可有效減少與上層光學膜之間的沾粘問題，並可減少沾粘區域在大角度觀察時有白斑的現象，並可減少稜鏡柱的峰與上層光學膜直接接觸而刮傷上層光學膜的機率，有助於增加產品製造的良率。When the optical film 30 and other optical films are stacked on each other, the heights and valley pitches 361, 371 of the peaks 322, 332, 342, 352 of the masts 32, 33, 34, 35 of the optical film 30 are periodic. The change causes the light emitted from above the optical film 30 to change irregularly, and the phenomenon of light dispersion and moiré is less generated; and the peak height 322 of the masts 32, 33, 34, 35 of the optical film 30 is 322. The heights of 332, 342, and 352 are periodically changed, and are designed in a sinusoidal manner. When the upper end of the optical film 40 is stacked with another optical film, the bottom edge of the other optical film contacts only a small amount of convex light. The peak of the control element, such as the peak 321 of the mast 32 in FIG. 5, does not contact the peaks 341, 351 of the more depressed masts 34, 35; thus, the contact of the optical film 30 with the optical film at its upper end can be greatly reduced. The area can effectively reduce the sticking problem with the upper optical film, and can reduce the white spots in the sticky area when viewed at a large angle, and can reduce the peak of the mast and the upper optical film to directly contact the upper layer and scratch the upper layer. The probability of optical film helps to increase the yield of product manufacturing.
請參閱圖6所示。本發明第二實施例之具有表面結構的光學膜40的結構，包括一基材41的一表面具有縱向接***行排列的光控制元件，例如稜鏡柱42、43、44、45；各個稜鏡柱42、43、44、45分別具有兩個斜面形成一個獨立的峰421、431、441、451；相鄰的兩個峰421、431、441、451之間的兩斜面分別形成獨立的谷46、47、48；每個峰421、431、441、451的峰頂角均相等。本發明第二實施例的光學膜40與前述第一實施例的光學膜30相同，每個峰421、431、441、451的高度呈週期性的變化，如圖中連接各峰的虛線所示者；但本實施例的峰421、431、441、451的高度呈如鐘擺狀週期性的變化，即每個峰421、431、441、451的兩斜面之中分線422、432、442、452會隨位置不同成鐘擺狀週期性的左右傾斜，谷46、47、48的夾角也隨位置不同而改變。Please refer to Figure 6. The structure of the optical film 40 having the surface structure according to the second embodiment of the present invention includes a surface of a substrate 41 having light control elements arranged in a longitudinally nearly parallel manner, such as masts 42, 43, 44, 45; The columns 42, 43, 44, 45 respectively have two inclined faces forming an independent peak 421, 431, 441, 451; the two inclined faces between the adjacent two peaks 421, 431, 441, 451 form independent valleys 46, respectively. 47, 48; the peak angles of each of the peaks 421, 431, 441, and 451 are equal. The optical film 40 of the second embodiment of the present invention is the same as the optical film 30 of the first embodiment described above, and the height of each of the peaks 421, 431, 441, and 451 changes periodically, as shown by the dotted line connecting the peaks in the figure. However, the heights of the peaks 421, 431, 441, and 451 of the present embodiment are periodically changed like a pendulum, that is, the dividing lines 422, 432, and 442 of the two inclined faces of each of the peaks 421, 431, 441, and 451 are The 452 will be periodically tilted left and right depending on the position of the pendulum, and the angles of the valleys 46, 47, and 48 will also vary with the position.
如圖6、7所示，每一個峰421、431、441、451的兩斜面之中分線422、432、442、452呈鐘擺狀週期性左右傾斜的狀態，係如一擺長為最高的峰的高度Lr 的鐘擺，其一端以特定中心C為軸，其另一端週期性的向左右兩側懸擺而呈傾斜的狀態，故每個峰與最高的峰的高度差hd ，隨其中分線422、432、442、452因呈鐘擺狀週期性左右傾斜，而產生週期性的變化。每個峰與最高的峰的高度差hd 的值可由下式獲得：As shown in FIGS. 6 and 7, the split lines 422, 432, 442, and 452 of the two slopes of each of the peaks 421, 431, 441, and 451 are periodically tilted to the left and right in a pendulum shape, such as a peak having the highest swing length. The pendulum of height L r has one end with a specific center C as its axis, and the other end of which is periodically inclined to the left and right sides and is inclined, so the height difference h d between each peak and the highest peak, with The branch lines 422, 432, 442, and 452 are periodically tilted left and right in a pendulum shape to cause periodic changes. The difference in height difference h d between each peak and the highest peak can be obtained by:
h d =L r (1-cosθ)， h d = L r (1-cos θ),
其中，Lr 為最高的峰的高度值；θ為峰的偏擺角度。Where L r is the height value of the highest peak; θ is the yaw angle of the peak.
本實施例光學膜40的任兩個相鄰的峰的偏擺角度差異不大於0.5度至0.05度之間；每一個峰的最大偏擺角度不大於15度至2度之間；每一次峰高的高度變化週期約包含40~400個峰；峰頂角的夾角範圍為70度至110度之間。本實施例的峰頂角可為圓弧角。The difference in yaw angle between any two adjacent peaks of the optical film 40 of the present embodiment is not more than 0.5 degrees to 0.05 degrees; the maximum yaw angle of each peak is not more than 15 degrees to 2 degrees; each peak The high height variation period includes about 40 to 400 peaks; the peak angle ranges from 70 degrees to 110 degrees. The peak angle of this embodiment may be an arc angle.
本實施例的光學膜40的峰421、431、441、451的高度呈如鐘擺狀週期性的變化，每個峰421、431、441、451的兩斜面之中分線422、432、442、452會隨位置不同成鐘擺狀週期性的左右傾斜，谷46、47、48的夾角也隨位置不同而改變，因此當光學膜40與其他的光學膜互相堆疊時，較不會產生光色散及疊紋的現象；且由於光學膜40的稜鏡柱42、43、44、45的峰高422、432、442、452的高度呈週期性的變化，呈如鐘擺狀週期性的變化，當光學膜40的上端堆疊另一光學膜時，另一光學膜的底邊只接觸少數凸出的光控制元件的峰，如圖6中稜鏡柱42的峰421，而不會接觸較凹陷的稜鏡柱44、45的峰441、451；因此可大幅減少光學膜40與其上端的光學膜的接觸面積，可有效減少與上層光學膜之間的沾粘問題，並可減少沾粘區域在大角度觀察時有白斑的現象，並可減少稜鏡柱的峰與上層光學膜直接接觸而刮傷上層光學膜的機率，有助於增加產品製造的良率。The heights of the peaks 421, 431, 441, and 451 of the optical film 40 of the present embodiment are periodically changed like a pendulum, and the split lines 422, 432, and 442 of the two slopes of each of the peaks 421, 431, 441, and 451 are 452 will be inclined to the left and right with different pendulum positions, and the angles of the valleys 46, 47, 48 also change with position, so when the optical film 40 and other optical films are stacked on each other, no light dispersion occurs. The phenomenon of moiré; and since the heights of the peak heights 422, 432, 442, 452 of the masts 42, 43, 44, 45 of the optical film 40 are periodically changed, they are periodically varying like a pendulum, when optical When the other end of the film 40 is stacked with another optical film, the bottom edge of the other optical film contacts only the peaks of a few protruding light control elements, such as the peak 421 of the mast 42 in Fig. 6, without contacting the more concave ribs. The peaks 441, 451 of the mirror columns 44, 45; therefore, the contact area of the optical film 40 with the optical film at the upper end thereof can be greatly reduced, the sticking problem with the upper optical film can be effectively reduced, and the sticky area can be reduced at a large angle. It has white spots when observed, and can reduce the peak of the mast and the upper optical film directly. The chance of scratching the upper optical film by contact helps to increase the yield of the product.
本發明兩相鄰稜鏡柱之間的峰的高度呈週期性的變化及谷間距呈相對應的變化，及各光控制元件的峰頂角為圓弧狀之設計均有別於上述美國專利所揭示之光學膜。本發明使光學膜峰的高度呈週期性的變化及谷間距呈相對應的變化的結構，可有效減少兩相疊光學膜的光色散現象，並可減少疊紋發生的機會；且利用光學膜的複數稜鏡柱上端的峰的高度呈週期性的變化，可減少光學膜支撐於上層材料膜的下表面時產生的沾粘的問題，及減少光學膜及上層材料膜之間的沾粘區域，在大視角觀察時有白斑的現象，亦減少峰刮傷上層材料膜的機會，有助於增加包含光學膜及上層材料膜等之電子產品的製造良率。各稜鏡柱的峰頂角為圓弧狀之設計，更能減少峰刮傷上層材料膜的機會。The height of the peak between the two adjacent masts of the present invention changes periodically and the valley spacing changes correspondingly, and the design of the peak angle of each light control element is arc-shaped, which is different from the above-mentioned US patent. The disclosed optical film. The invention has the structure that the height of the optical film peak changes periodically and the valley spacing changes correspondingly, which can effectively reduce the light dispersion phenomenon of the two-phase laminated optical film, and can reduce the chance of occurrence of moiré; and utilize the optical film The height of the peak at the upper end of the plurality of columns is periodically changed, which reduces the sticking problem caused when the optical film is supported on the lower surface of the upper material film, and reduces the sticky area between the optical film and the film of the upper material. The phenomenon of white spots when viewed from a large viewing angle also reduces the chance of the peak scratching the upper material film, and contributes to the increase in the manufacturing yield of the electronic product including the optical film and the upper material film. The peak angle of each column is arc-shaped, which reduces the chance of the peak scratching the film of the upper material.
以上所記載，僅為利用本發明技術內容之實施例，任何熟悉本項技藝者運用本發明所為之修飾、變化，皆屬本發明主張之專利範圍，而不限於實施例所揭示者。The above description is only for the embodiments of the present invention, and any modifications and variations made by those skilled in the art using the present invention are the scope of the invention claimed, and are not limited to the embodiments disclosed.
11．．．冷極燈管11. . . Cold lamp
12．．．導光板12. . . Light guide
13．．．下擴散片13. . . Lower diffuser
14．．．聚光片14. . . Concentrating film
140．．．垂直軸140. . . Vertical axis
141．．．稜鏡柱141. . . Pillar
142．．．基材142. . . Substrate
143、144、145．．．光線143, 144, 145. . . Light
146．．．稜鏡峰146. . . Peak
30、40、50．．．光學膜30, 40, 50. . . Optical film
31、41、51．．．基材31, 41, 51. . . Substrate
32、33、34、35、42、43、44、45、52．．．稜鏡柱32, 33, 34, 35, 42, 43, 44, 45, 52. . . Pillar
321、331、341、351、421、431、441、451、521．．．峰321, 331, 341, 351, 421, 431, 441, 451, 521. . . peak
322、332、342、352．．．峰高322, 332, 342, 352. . . Peak height
36、37、38、46、47、48．．．谷36, 37, 38, 46, 47, 48. . . Valley
361、371．．．谷間距361, 371. . . Valley spacing
422、432、442、452．．．中分線422, 432, 442, 452. . . Middle line
圖1為已知顯示器的背光系統示意圖。1 is a schematic diagram of a backlight system of a known display.
圖2為已知聚光片的示意圖。2 is a schematic view of a known concentrating sheet.
圖3為已知聚光片的各種光線折射模式的示意圖。Fig. 3 is a schematic illustration of various light refraction patterns of known concentrating sheets.
圖4為已知聚光片支撐上層材料膜的示意圖。Figure 4 is a schematic illustration of a known concentrating sheet supporting an upper material film.
圖5為本發明第一實施例的光學膜的剖面示意圖。Figure 5 is a cross-sectional view showing an optical film according to a first embodiment of the present invention.
圖6為本發明第二實施例的光學膜的剖面示意圖。Figure 6 is a cross-sectional view showing an optical film according to a second embodiment of the present invention.
圖7為說明本發明第二實施例的峰的兩斜面之中分線呈鐘擺狀週期性左右傾斜的狀態的示意圖。Fig. 7 is a schematic view showing a state in which the dividing lines of the peaks of the peaks of the second embodiment of the present invention are periodically tilted left and right in a pendulum shape.
圖8為本發明第三實施例的光學膜的剖面示意圖。Figure 8 is a cross-sectional view showing an optical film according to a third embodiment of the present invention.
40．．．光學膜40. . . Optical film
41．．．基材41. . . Substrate
42、43、44、45．．．稜鏡柱42, 43, 44, 45. . . Pillar
421、431、441、451．．．峰421, 431, 441, 451. . . peak
422、432、442、452．．．峰高422, 432, 442, 452. . . Peak height
46、47、48．．．谷46, 47, 48. . . Valley
Claims (12)
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| Application Number | Priority Date | Filing Date | Title |
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| TW99125641A TWI411819B (en) | 2007-04-03 | 2007-04-03 | An optical film having a surface structure |
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| TW201100873A TW201100873A (en) | 2011-01-01 |
| TWI411819B true TWI411819B (en) | 2013-10-11 |
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| TWI421549B (en) * | 2011-02-01 | 2014-01-01 | Entire Technology Co Ltd | Light-guiding plate and backlight module |
| CN104379993B (en) * | 2012-03-20 | 2018-04-06 | 3M创新有限公司 | Structured optical film |
| CN109283780B (en) * | 2017-07-20 | 2021-03-05 | 宏达国际电子股份有限公司 | Optical lens, optical system and method for manufacturing optical lens |
| US10670778B2 (en) | 2017-07-20 | 2020-06-02 | Htc Corporation | Optical lens, optical system and method of manufacturing optical lens |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1668942A (en) * | 2002-05-20 | 2005-09-14 | 通用电气公司 | Optical substrate and method of making |
| WO2006064259A1 (en) * | 2004-12-16 | 2006-06-22 | Microsharp Corporation Limited | Structured optical film |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1668942A (en) * | 2002-05-20 | 2005-09-14 | 通用电气公司 | Optical substrate and method of making |
| WO2006064259A1 (en) * | 2004-12-16 | 2006-06-22 | Microsharp Corporation Limited | Structured optical film |
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