13561981356198
100年08月31日修正替換頁1 六、發明說明： · 【發明所屬之技術領域】 [0001] 本發明係關於一種棱鏡片、該棱鏡片之製程、採用該棱 鏡片之背光模組及採用該稜鏡片之液晶顯示裝置。 【先前技術】 [_2] 液晶顯示裝置因其具有低輻射性、輕薄及耗電低等特點 ，故於使用上曰漸廣泛，且隨著相關技術之成熟及創新 ，其種類亦日益繁多。液晶顯示裝置一般包括一液晶顯 示面板及一為該液晶顯示面板提供平面光之背光模組。 [0003] 請參閱圖1，其係一種先前技術液晶顯示裝置之側面示意 圖。該液晶顯示裝置1包括一液晶顯示面板10及一與其層 疊设置之背光模組19。該液晶顯示面板10包括一第一基 板11、一與該第一基板11相對間隔設置之第二基板12及 夾於该一基板11、12間之一液晶層13。該第一基板11鄰 近該液晶層13之表面設置有一彩色濾光層14，該彩色濾 光層1 4包括等間距排列並週期性重複之複數紅色濾光單 几（未標示）、複數綠色濾光單元（未標示）、複數藍色濾 光單τ〇(未標示）及間隔上述濾光單元之黑色矩陣15。 [0004] S玄背光模組19包括一光源191、一反射板192、一導光板 1 93、_第一擴散片i 94、一稜鏡片！ 95及一第二擴散片 196。该反射板192、導光板193 '第一擴散片194、稜鏡 片195及第二擴散片196自下而上依序設置.，該光源191 鄰近°玄導光板19 3之其中-側面設置。 ' [0005] 096138176Correction replacement page 1 of August 31, 100. Description of the invention: · Technical field of the invention [0001] The present invention relates to a prism sheet, a process of the prism sheet, a backlight module using the prism sheet, and the use thereof The liquid crystal display device of the cymbal. [Prior Art] [_2] Due to its low radiation, light weight and low power consumption, liquid crystal display devices have become more and more widely used, and with the maturity and innovation of related technologies, their types are also increasing. The liquid crystal display device generally includes a liquid crystal display panel and a backlight module for providing planar light to the liquid crystal display panel. Please refer to FIG. 1, which is a side schematic view of a prior art liquid crystal display device. The liquid crystal display device 1 includes a liquid crystal display panel 10 and a backlight module 19 disposed thereon. The liquid crystal display panel 10 includes a first substrate 11 , a second substrate 12 spaced apart from the first substrate 11 , and a liquid crystal layer 13 sandwiched between the substrates 11 and 12 . A color filter layer 14 is disposed on the surface of the first substrate 11 adjacent to the liquid crystal layer 13. The color filter layer 14 includes a plurality of red filters (not labeled) and a plurality of green filters arranged at equal intervals and periodically repeated. A light unit (not shown), a plurality of blue filter sheets τ 〇 (not shown), and a black matrix 15 spaced apart from the filter unit. [0004] The S-switch backlight module 19 includes a light source 191, a reflector 192, a light guide plate 93, a first diffusion sheet i94, and a cymbal! 95 and a second diffusion sheet 196. The reflector 192, the light guide plate 193', the first diffusion sheet 194, the second sheet 195 and the second diffusion sheet 196 are sequentially disposed from bottom to top. The light source 191 is disposed adjacent to the side surface of the side light guide plate 193. ' [0005] 096138176
該導光板193藉由其底部之導光點（圖未示）將光源191所 提供之光束轉化為平面光。該第一擴散片194用於霧化由 表單編號A0HU ¥/ 第《3 貝/共 20 頁 1003317S 1356198 ,__ 100年08'月31日梭正替换頁 該導光板193出射之平面光。該稜鏡片195用於將光束方 向較為發散之平面光轉化為光束方向較為集中之平面光 使其輝度得到提升，該第二擴散片196用於進一步霧化由 該稜鏡片195出射之平靣光及保護該稜鏡片195。 [0006] 該棱鏡片195包括一基底198及複數稜鏡197。該基底198 包括一平滑之上表面（未標示）及一平滑之下表面（未標示 )，該複數棱鏡197形狀相同，均為截面為等腰三角形之 三稜柱，且該稜鏡197頂角向上相互平行且連續排列於該 上表面。 | [0007] 惟，由於該複數稜鏡197之平行排列，相鄰棱鏡197之中 心距離相同，故其可以形成一光柵。又由於該濾光單元 之等間距排列使間隔該濾光單元之網格狀黑色矩陣1 5亦 形成一光栅，光束經過上述交錯之二光栅會產生莫爾 (Moire)疊紋，影響該液晶顯示裝置1之顯示品質。為了 解決占述問題，業界提出如下方法來避免莫爾疊紋。 [0008] 請參閱圖2，其係另一種先前技術之稜鏡片之立體結構示 | 意圖。該稜鏡片295包括一基底298及複數稜鏡297。該 基底298包括一平滑之上表面（未標示）及一平滑之下表面 (未標示），該複數棱鏡297為形狀相似之三稜台，每一稜 鏡297在不同截面上之輪廓分別為頂角0相同但邊長不同 之等腰三角形。該複數棱鏡297頂角0向上連續排列於該 上表面，使每一棱鏡297沿其延伸方向之高度連續增大或 減小之同時，所有稜鏡297頂角0所對應之棱299於該基 底298平面内之投影不完全平行。如此，該稜鏡片295之 棱鏡297形狀及排列破壞了形成莫爾疊紋之條件，故可以 096138176 表單編號Α0101 第4頁/共20頁 1003317980-0 1.356198 100年08月· 31日梭正替換頁 避免莫爾疊紋之產生。 [0009] 惟，該稜鏡片295每一棱鏡297之高度沿其延伸方向連續 之增大或減小，使該棱鏡片295之表面亦不平整，即高度 分佈差異較大，不利於其他光學膜片於其上平整層疊設 置，進而不利於背光模組及液晶顯示裝置之組裝。 【發明内容】 [0010] 有鑑於此，提供一種高度分佈差異較小之稜鏡片實為必 需。 [0011] 同時，提供一種較易組裝、出光品質較佳之背光模組亦 為必需。 [0012] 同時，提供一種較易組裝、顯示品質較佳之液晶顯示裝 置亦為必需。 [0013] 另，提供一種上述棱鏡片之製程亦為必需。 [0014] —種稜鏡片，其包括一基底及複數沿一第一方向延伸之 棱鏡，該第一方向平行於該基底表面，該複數棱鏡於該 基底表面排成複數列，位於每一列之複數稜鏡沿該第一 方向連續設置，每一棱鏡與相鄰列之棱鏡交錯排列，其 中，該稜鏡之高度及寬度沿該第一方向上之兩端向中間 增大。 [0015] —種背光模組，其包括一導光板及一相鄰該導光板之稜 鏡片，該稜鏡片包括一基底及複數沿一第一方向延伸之 稜鏡，該第一方向平行於該基底表面，該複數稜鏡於該 基底表面排成複數列，位於每一列之複數棱鏡沿該第一 方向連續設置，每一稜鏡與相鄰列之棱鏡交錯排列，其 096138176 表單編號 A0101 第 5 頁/共 20 頁 1003317980-0 1356198 _^ 100年08> 310·梭正替换贪 中，該稜鏡之高度及寬度沿該第一方向上之兩端向中間 增大。 [0016] 一種液晶顯示裝置，其包括一液晶顯示面板及一相鄰該 液晶顯示面板其之背光模組，該背光模組包括依序層疊 設置之一導光板及一相鄰該導光板之棱鏡片，該棱鏡片 包括一基底及複數沿一率一方向延伸之棱鏡，該第一方 向平行於該基底表面，該複數棱鏡於該基底表面排成複 數列，位於每一列之複數稜鏡沿該第一方向連續設置， 每一棱鏡與相鄰列之棱鏡交錯排列，其中，該棱鏡之高 φ 度及寬度沿該第一方向上之兩端向中間增大。 [0017] 一種棱鏡片製程，其包括提供一基材及一圓盤銑刀；利 用該圓盤銑刀於該基材之表面形成至少一凹槽以形成一 鑄模，其中，該凹槽沿一第一方向延伸，且其深度及寬 度由該凹槽沿該第一方向之兩端向中間增大，該第一方 向平行於該基材之表面；利用該鑄模翻製獲得具有至少 一稜鏡之棱鏡片。 [0018] 與先前技術相比，本發明之稜鏡片由於該基底上設置之 棱鏡之高度及寬度沿該第一方向上之兩端向中間增大， 且其於該基底上排列較均勻，故高度分佈差異較小。 [0019] 與先前技術相比，本發明之背光模組及該液晶顯示裝置 由於該棱鏡片之基底上之棱鏡之高度及寬度沿該第一方 向上之兩端向中間增大，且其於該基底上排列較均勻， 故高度分佈差異較小，使該擴散片容易放置，組裝方便 〇 096138176 表單编號A0101 第6頁/共20頁 1003317980-0 1356198 [0020] 100年08月31日修正替換頁 與先前技術相比，本發明之稜鏡片製程由於其採用該圓 盤銑刀，可以較容易之於該基材上形成深度及寬度由兩 端向中間增大之凹槽，故可以較容易之形成具有寬度及 高度由兩端向中間增大之棱鏡之棱鏡片。 【實施方式】 [0021] 請參閱圖3，其係本發明液晶顯示裝置第一實施方式之側 面示意圖。該液晶顯示裝置4包括一液晶顯示面板40及一 相鄰該液晶顯示面板40之背光模組49。該液晶顯示面板 40包括一第一基板41、一與該第一基板41相對間隔設置 之第二基板42及夾於該第一、第二基板41、42間之一液 晶層43。該第一基板41鄰近該液晶層43.之表面設置有一 彩色濾光層44，該彩色濾光層44包括等間距排列並週期 性重複之複數紅色濾光單元（未標示）、複數綠色濾光單 元（未標示）、複數藍色濾光單元（未標示）及間隔上述濾 光單元之黑色矩陣4 5。 [0022] 該背光模組49包括一光源· 491、一反射板492、一導光板 • 493、一第一擴散片494、一棱鏡片495及一苐二擴散片 496。該反射板492、該導光板493、該第一擴散片494、 該棱鏡片495及該第二擴散片496自下而上依序層疊設置 ，該光源491鄰近該導光板493設置。 [0023] 該導光板493包括一鄰近該光源491之入光面（未標示）' 一鄰接該入光面之底面（未標示）、一鄰接該入光面並相 對該底面之出光面（未標示）與複數自該底面向外突出之 網點結構（未標示）。該底面相鄰該反射片，該出光面相 鄰該第一擴散片494。 096138176 表單編號A0101 第7頁/共20頁 1003317980-0 1356198 , 100年〇8> 31日核正替换π [0024] 自該光源491發出之光束經該入光面進入該導光板493， 部份光束經底面之網點結構散亂反射後自該出光面射出 至該第一擴散片494，另一部份光束自該底面射出至該反 射片492，經該反射片492反射後重新進入該導光板493 ，直至射出該導光板493至該第一擴散片494。該第一擴 散片494可擴散來自導光板393之光束，以提升該背光模 組49之出光均勻度。該稜鏡片495可將來自該第一擴散片 494之較為發散之光束轉化為方向較為集中高輝度光束。 該第二擴散片496可擴散來自該稜鏡片495之光束，從而 | 進一步提升該背光模組49之出光均勻度。 [0025] 請一併參閱圖4，其係圖3所示稜鏡片495之平面結構示意 圖。該稜鏡片49 5包括一基底441及複數形狀相似之稜鏡 442。該基底441包括一平滑之上表面（未標示）及一平滑 之下表面（未標示）。定義平行於該上表面之方向為第一 方向。該稜鏡442沿該第一方向延伸，其包括一呈平面狀 之底面（圖未示）及二呈平滑曲面狀之側面443。該二側面 443之曲率相同，每一側面443之曲心位於該側面443鄰 聲 . * 近另一側面4 4 3 —側，使每一側面4 4 3朝背向另一側面 443之方向凸出。該二側面443之交線為一曲線，每一側 面443與該底面之交線亦為曲線，使該稜鏡442之高度及 寬度均由該稜鏡442於該第一方向上之兩端向中間增大。 沿與該第一方向垂直之平面取該棱鏡442之截面，則所取 得之最大截面為等腰三角形。該稜鏡442排成複數列，位 於每一列之複數棱鏡442沿該第一方向連續設置，每一稜 鏡442與相鄰列之稜鏡442均不在一行上，形成交錯排列 096138176 表單编號Α0101 第8頁/共20頁 1003317980-0 1356198 之狀態。 上00 年08 月 [0026]相較於先前技術，本發明液晶顯示裝置4包括該棱鏡片 495之棱鏡442，該稜鏡442之高度及寬度均由該棱鏡州 該第-方向上之兩端向中間增大，且其於該基底44ι之上 表面排列較均勻，故該稜鏡片495高度較士句勻。即，該第 二擴散片496較容易於該棱鏡片495上平整放置，進而使 該背光模組49及該液晶顯示裝置4較易組裝。又，由於每 一棱鏡442與相鄰列之棱鏡442均不在—行上，形成交錯 • 排列之狀態，使採用該棱鏡片495之背光模組49出光均句 ，即出光品質較佳，同時也使該液晶顯示裝置4可以避免 莫爾疊紋的產生，而獲得較佳之顯示品質。 闕請參閱圖5，係圖4所示棱鏡片495製程之流程圖。其包括 如下步驟：提供一基材及一圓盤銑刀；利用該圓盤銑刀 於该基材之表面形成複數凹槽，以形成一鑄模；利用該 鑄模翻製獲得具有至少一稜鏡之棱鏡片。各步驟之詳述 如下： [0028]步驟S1 :提供一基材及一圓盤銑刀； 國請一併參閱圖6，提供-基材4G1及-圓盤銑刀403，該基 材401具有一平滑之表面4〇2。該·基材4〇1之材質可以是 用於形成鑄模之材質，如鋁合金或銅合金。該圓盤銑刀 403包括—圓盤形狀之本體404及一圍繞該本體404邊緣 設置之“v”形刀刀'405,經過該圓盤形狀之本體4〇4圓心 且垂直於圓盤平面之直線b為該本體404之對稱軸，亦為 該圓盤銑刀403之轉軸。該刀刃405由所有經過該轉軸之 096138176 表單編號A0101 第9頁/共20頁 1003317980-0 1356198 _.·_. 100年08月31日核正替换頁 平面截得之截面為相同之等腰三角形，該刀刃405之寬度 由鄰近該本體404向遠離該本體404方向均勻減小。 [0030] 步驟S2 :利用該圓盤銑刀403於該基材401之表面402形 成複數凹槽，以形成一鑄模； [0031] .請一併參閱圖7，使該圓盤銑刀403沿其轉軸高速旋轉， 並將該圓盤銑刀403之刀刃405壓進該基材401之表面402 預定深度。重複上述動作，並該刀刃405控制壓進該基材 401之深度及壓進後沿垂直於壓進方向行進之距離，於該 基材401之該表面402形成複數形狀相似之凹槽406，以 ί 形成一鑄模407，其中，該凹槽406沿一第一方向延伸， 且其深度及寬度由該凹槽406沿該第一方向之兩端向中間 增大。 [0032] 步驟S3 :利用該鑄模407翻製獲得具有至少一棱鏡442之 棱鏡片495 ; [0033] 請一併參閱圖8，利用該鑄模407形成一棱鏡片495，使該 棱鏡片495對應該複數凹槽406位置形成複數突起，作為 4 - 該棱鏡片495之稜鏡442。 [0034] 相較於先前技術，本發明棱鏡片製程由於該圓盤銳刀403 之“V”形刀刃405,可以較容易之於該基材401上形成該 凹槽406，故可以較容易之形成該稜鏡片495之棱鏡442 [0035] 請參閱圖9，係本發明液晶顯示裝置第二實施方式之側面 結構示意圖。該液晶顯示裝置5與該液晶顯示裝置4大致 相同，其主要區別在於：沿與第一方向垂直之平面取棱 096138176 表單编號 Α0101 第 10 頁/共 20 頁 1003317980-0 1356198 100年08月31日核正替換頁 鏡542之截面，.稜鏡片595之棱鏡542所取得之最大截面 與該二側面543之交線為二曲率相同之曲線。該棱鏡片 595之製程與該棱鏡片495之製程之主要區別在於：所有 經過該圓盤銳刀503(見圖10)轉軸之平面與該刀刃505側 面之交線為二曲率相同之曲線。 [0036] 請參閱圖11，係本發明液晶顯示裝置第三實施方式之部 份側面結構示意圖。第三實施方式之液晶顯示裝置與該 液晶顯示裝置4之主要區別在於：稜鏡片695之棱鏡642之 二側面643平滑連接。該棱鏡片595之製程與該棱鏡片 495之製程之區別在於：所有經過該該圓盤銑刀603(見圖 1 2)轉軸之平面與該刀刃605二侧面之交線為一平滑曲線 [0037] 综上所述，本發明確已符合發明之要件，爰依法提出專 利申請。惟，以上所述者僅為本發明之較佳實·施方式， 本發明之範圍並不以上述實施方式為限，舉凡熟悉本案 技藝之人士援依本發明之精神所作之等效修飾或變化， 皆應涵蓋於以下申請專利範圍内。 【圖式簡單說明】 [0038] 圖1係一種先前技術之液晶顯示裝置之侧面結構示意圖。 [0039] 圖2其係另一種先前技術之棱鏡片之立體結構示意圖。The light guide plate 193 converts the light beam provided by the light source 191 into planar light by a light guiding point (not shown) at the bottom thereof. The first diffusion sheet 194 is used for atomization by the form number A0HU ¥/ 3rd / total 20 pages 1003317S 1356198, __ 100 years 08' month 31 shuttle replacement page The light guide plate 193 is emitted by the plane light. The cymbal 195 is configured to convert planar light having a relatively divergent beam direction into planar light having a relatively concentrated beam direction to enhance the luminance thereof, and the second diffusion sheet 196 is configured to further atomize the flat light emitted from the cymbal 195. And protecting the cymbal 195. The prism sheet 195 includes a substrate 198 and a plurality of turns 197. The substrate 198 includes a smooth upper surface (not labeled) and a smooth lower surface (not labeled). The plurality of prisms 197 are identical in shape, and are triangular prisms having an isosceles triangle cross section, and the top corner of the crucible 197 is upward. Parallel to each other and continuously arranged on the upper surface. [0007] However, since the parallel arrangement of the plurality of 稜鏡197 is the same as the center distance of the adjacent prisms 197, it is possible to form a grating. Moreover, due to the equidistant arrangement of the filter units, the grid-like black matrix 15 spaced apart from the filter unit also forms a grating, and the light beam passing through the interlaced two gratings may generate a Moire pattern, which affects the liquid crystal display. The display quality of the device 1. In order to solve the problem of occupation, the industry proposes the following methods to avoid moiré. Please refer to FIG. 2, which is a perspective view of another prior art cymbal. The crotch panel 295 includes a base 298 and a plurality of turns 297. The substrate 298 includes a smooth upper surface (not labeled) and a smooth lower surface (not labeled). The plurality of prisms 297 are triangular shaped blocks of similar shape, and each of the turns 297 has a contour on a different cross section. An isosceles triangle with the same angle 0 but different side lengths. The apex angles 297 of the plurality of prisms 297 are continuously arranged upwardly on the upper surface, so that the height of each of the prisms 297 continuously increases or decreases along the extending direction thereof, and the ridges 299 corresponding to the apex angles of all the ridges 297 are on the substrate. The projections in the 298 plane are not completely parallel. Thus, the shape and arrangement of the prism 297 of the cymbal 295 destroys the condition for forming the moiré, so it can be 096138176. Form number Α 0101 4th page / total 20 pages 1003317980-0 1.356198 100 years August 31st Avoid the occurrence of Moiré. [0009] However, the height of each of the prisms 295 is increased or decreased continuously along the extending direction of the prisms 295, so that the surface of the prism sheet 295 is also uneven, that is, the height distribution is largely different, which is disadvantageous to other optical films. The sheet is flatly stacked thereon, which is disadvantageous for assembly of the backlight module and the liquid crystal display device. SUMMARY OF THE INVENTION [0010] In view of the above, it is necessary to provide a cymbal having a small difference in height distribution. [0011] At the same time, it is also necessary to provide a backlight module that is easier to assemble and has better light output quality. [0012] At the same time, it is also necessary to provide a liquid crystal display device which is easier to assemble and has better display quality. [0013] In addition, it is also necessary to provide a process for the above prism sheet. [0014] a slab comprising a base and a plurality of prisms extending in a first direction, the first direction being parallel to the surface of the substrate, the plurality of prisms being arranged in a plurality of columns on the surface of the substrate, at a plurality of columns The crucible is continuously disposed along the first direction, and each prism is staggered with the prisms of the adjacent columns, wherein the height and width of the crucible increase toward the middle along both ends in the first direction. [0015] A backlight module includes a light guide plate and a die adjacent to the light guide plate, the die includes a base and a plurality of turns extending in a first direction, the first direction being parallel to the The surface of the substrate is arranged in a plurality of columns on the surface of the substrate, and the plurality of prisms in each column are successively arranged along the first direction, and each of the prisms is staggered with the prisms of the adjacent columns, and its 096138176 form number A0101 is 5 Page/Total 20 pages 1003317980-0 1356198 _^ 100 years 08> 310. The shuttle is replacing the greedy, the height and width of the cymbal increasing in the middle along both ends in the first direction. [0016] A liquid crystal display device includes a liquid crystal display panel and a backlight module adjacent to the liquid crystal display panel. The backlight module includes a light guide plate and a prism adjacent to the light guide plate. a prism comprising a substrate and a plurality of prisms extending along a rate direction, the first direction being parallel to the surface of the substrate, the plurality of prisms being arranged in a plurality of columns on the surface of the substrate, The first direction is continuously arranged, and each prism is staggered with the prisms of the adjacent columns, wherein the height φ degree and the width of the prism increase toward the middle along both ends in the first direction. [0017] A prism sheet process, comprising: providing a substrate and a disc milling cutter; forming, by the disc milling cutter, at least one groove on a surface of the substrate to form a mold, wherein the groove is along a a first direction extending, and a depth and a width thereof are increased from the both ends of the first direction in the first direction, the first direction being parallel to a surface of the substrate; and the mold is turned over to obtain at least one turn The prism sheet. [0018] Compared with the prior art, the cymbal of the present invention has a height and a width of the prism disposed on the substrate increasing along the two ends in the first direction, and the arrangement thereof is relatively uniform on the substrate. The difference in height distribution is small. [0019] Compared with the prior art, the backlight module and the liquid crystal display device of the present invention have a height and a width of a prism on a base of the prism sheet increasing in the middle in the first direction, and The substrate is arranged more evenly, so the difference in height distribution is small, so that the diffusion sheet is easy to place and easy to assemble. 096138176 Form No. A0101 Page 6 / Total 20 Page 1003317980-0 1356198 [0020] Correction on August 31, 100 Replacement page Compared with the prior art, the enamel process of the present invention can easily form a groove having a depth and a width increasing from both ends to the middle by using the disk milling cutter, so It is easy to form a prism sheet having a prism whose width and height are increased from both ends toward the middle. [Embodiment] [0021] Please refer to Fig. 3, which is a side view showing a first embodiment of a liquid crystal display device of the present invention. The liquid crystal display device 4 includes a liquid crystal display panel 40 and a backlight module 49 adjacent to the liquid crystal display panel 40. The liquid crystal display panel 40 includes a first substrate 41, a second substrate 42 spaced apart from the first substrate 41, and a liquid crystal layer 43 interposed between the first and second substrates 41 and 42. A color filter layer 44 is disposed on the surface of the first substrate 41 adjacent to the liquid crystal layer 43. The color filter layer 44 includes a plurality of red filter units (not labeled) and a plurality of green filters arranged at equal intervals and periodically repeated. A unit (not shown), a plurality of blue filter units (not shown), and a black matrix 45 spaced from the filter unit. [0022] The backlight module 49 includes a light source 491, a reflector 492, a light guide plate 493, a first diffusion sheet 494, a prism sheet 495, and a second diffusion sheet 496. The reflector 492, the light guide plate 493, the first diffusion sheet 494, the prism sheet 495, and the second diffusion sheet 496 are sequentially stacked from bottom to top, and the light source 491 is disposed adjacent to the light guide plate 493. [0023] The light guide plate 493 includes a light incident surface (not labeled) adjacent to the light source 491, a bottom surface (not labeled) adjacent to the light incident surface, and a light emitting surface adjacent to the light incident surface and opposite to the bottom surface (not Marked) and a plurality of dot structures (not labeled) protruding outward from the bottom surface. The bottom surface is adjacent to the reflective sheet, and the light emitting surface is adjacent to the first diffusion sheet 494. 096138176 Form No. A0101 Page 7 / Total 20 Page 1003317980-0 1356198 , 100 years 〇 8> 31-day nuclear replacement π [0024] The light beam emitted from the light source 491 enters the light guide plate 493 through the light incident surface, part After the light beam is scattered and reflected by the dot structure of the bottom surface, the light beam is emitted from the light emitting surface to the first diffusion sheet 494, and another portion of the light beam is emitted from the bottom surface to the reflection sheet 492, reflected by the reflection sheet 492, and then re-entered into the light guide plate. 493, until the light guide plate 493 is emitted to the first diffusion sheet 494. The first diffusion sheet 494 can diffuse the light beam from the light guide plate 393 to enhance the light uniformity of the backlight module 49. The crotch panel 495 converts the relatively divergent beam from the first diffuser 494 into a relatively concentrated high-intensity beam. The second diffusion sheet 496 can diffuse the light beam from the stencil 495, thereby further improving the light uniformity of the backlight module 49. [0025] Please refer to FIG. 4 together, which is a schematic plan view of the slab 495 shown in FIG. The cymbal 49 5 includes a base 441 and a plurality of stencils 442 of similar shape. The substrate 441 includes a smooth upper surface (not labeled) and a smooth lower surface (not labeled). The direction parallel to the upper surface is defined as the first direction. The crucible 442 extends in the first direction and includes a planar bottom surface (not shown) and two smooth curved surface sides 443. The curvature of the two sides 443 is the same, the curvature of each side 443 is located on the side 443 adjacent to the sound. * Near the other side 4 4 3 - side, so that each side 4 4 3 is convex toward the other side 443 Out. The intersection of the two sides 443 is a curve, and the intersection of each side 443 and the bottom surface is also curved, so that the height and width of the 稜鏡 442 are both from the ends of the 稜鏡 442 in the first direction. Increase in the middle. A section of the prism 442 is taken along a plane perpendicular to the first direction, and the largest section taken is an isosceles triangle. The 稜鏡 442 is arranged in a plurality of columns, and the plurality of prisms 442 located in each column are successively disposed along the first direction, and each of the 稜鏡 442 and the adjacent columns 稜鏡 442 are not on one line, forming a staggered arrangement 096138176 Form No. Α 0101 Page 8 of 20 The status of 1003317980-0 1356198. August 20, 2010 [0026] Compared with the prior art, the liquid crystal display device 4 of the present invention includes a prism 442 of the prism sheet 495, and the height and width of the crucible 442 are both ends of the prism state in the first direction. Increasing to the middle, and its surface is more evenly arranged on the surface of the substrate 44, so that the slab 495 is more uniform than the sentence. That is, the second diffusion sheet 496 is more easily placed on the prism sheet 495, thereby making the backlight module 49 and the liquid crystal display device 4 easier to assemble. Moreover, since each of the prisms 442 and the prisms 442 of the adjacent columns are not in the line, the staggered and arranged state is formed, so that the backlight module 49 using the prism sheet 495 emits light, that is, the light quality is better, and also The liquid crystal display device 4 can avoid the generation of moiré, and obtain better display quality. Please refer to FIG. 5, which is a flow chart of the process of the prism sheet 495 shown in FIG. The method comprises the steps of: providing a substrate and a disc milling cutter; forming a plurality of grooves on the surface of the substrate by using the disc milling cutter to form a mold; and using the mold to obtain at least one twist Prism sheet. The details of each step are as follows: [0028] Step S1: providing a substrate and a disc milling cutter; and referring to FIG. 6 together, a substrate 4G1 and a disc milling cutter 403 are provided, the substrate 401 having A smooth surface 4〇2. The material of the substrate 4〇1 may be a material for forming a mold, such as an aluminum alloy or a copper alloy. The disc milling cutter 403 includes a disc-shaped body 404 and a "v"-shaped knife 405 disposed around the edge of the body 404, passing through the center of the disc-shaped body 4〇4 and perpendicular to the plane of the disc. The straight line b is the axis of symmetry of the body 404 and is also the axis of rotation of the disc milling cutter 403. The blade 405 is made up of all the isosceles triangles of the same section of the 096138176 form number A0101, page 9 of 20, 1003317980-0 1356198 _.·_. The width of the blade 405 is uniformly reduced adjacent to the body 404 in a direction away from the body 404. [0030] Step S2: forming a plurality of grooves on the surface 402 of the substrate 401 by using the disc milling cutter 403 to form a mold; [0031] Please refer to FIG. 7 together, and the disc milling cutter 403 is The shaft rotates at a high speed, and the blade 405 of the disc cutter 403 is pressed into the surface 402 of the substrate 401 to a predetermined depth. The above-mentioned action is repeated, and the cutting edge 405 controls the depth of pressing into the substrate 401 and the distance traveled in the direction perpendicular to the pressing direction. The surface 402 of the substrate 401 forms a plurality of grooves 406 having similar shapes to ί A mold 407 is formed, wherein the groove 406 extends in a first direction, and the depth and width thereof are increased from the both ends of the groove 406 in the first direction toward the middle. [0032] Step S3: using the mold 407 to obtain a prism sheet 495 having at least one prism 442; [0033] Referring to FIG. 8 together, a prism sheet 495 is formed by using the mold 407, so that the prism sheet 495 corresponds to the prism sheet 495. The plurality of grooves 406 are formed to form a plurality of protrusions as the 稜鏡 442 of the prism sheet 495. [0034] Compared with the prior art, the prism sheet process of the present invention can be easily formed on the substrate 401 by the "V" shaped blade 405 of the disc sharp knife 403, so that it can be relatively easy. A prism 442 for forming the slab 495. [0035] Please refer to FIG. 9, which is a side view of a second embodiment of the liquid crystal display device of the present invention. The liquid crystal display device 5 is substantially the same as the liquid crystal display device 4, and the main difference is that the edge 096138176 is taken along a plane perpendicular to the first direction. Form No. 1010101 Page 10 of 20 1003317980-0 1356198 100 Aug 31 The Japanese core is replacing the cross section of the page mirror 542. The maximum cross section obtained by the prism 542 of the cymbal 595 and the intersection of the two side surfaces 543 have the same curvature. The main difference between the process of the prism sheet 595 and the process of the prism sheet 495 is that all the lines passing through the plane of the rotary shaft of the disc sharp knife 503 (see Fig. 10) and the side surface of the blade 505 have the same curvature. Referring to Fig. 11, there is shown a side view of a portion of a third embodiment of a liquid crystal display device of the present invention. The main difference between the liquid crystal display device of the third embodiment and the liquid crystal display device 4 is that the two side faces 643 of the prism 642 of the die 695 are smoothly connected. The process of the prism sheet 595 is different from the process of the prism sheet 495 in that all the lines passing through the rotating shaft of the disc milling cutter 603 (see FIG. 12) and the two sides of the cutting edge 605 are a smooth curve [0037] In summary, the present invention has indeed met the requirements of the invention, and has filed a patent application according to law. However, the above description is only the preferred embodiment of the present invention, and the scope of the present invention is not limited to the above embodiments, and those skilled in the art will be able to make equivalent modifications or changes in accordance with the spirit of the present invention. , should be covered by the following patent application. BRIEF DESCRIPTION OF THE DRAWINGS [0038] FIG. 1 is a side view showing a structure of a prior art liquid crystal display device. 2 is a schematic perspective view showing another prior art prism sheet.
II
[0040] 圖3其係本發明液晶顯示裝置第一實施方式之側面結構示 意圖。 [0041] 圖4其係圖3所示液晶顯示裝置之棱鏡片之平面結構示意 圖。 096138176 表單編號A0101 第11頁/共20頁 1003317980-0 1356198 _^ 100年08i 31日核正替换百 [0042] 圖5係圖4所示稜鏡片之製造流程圖。 [0043] 圖6係提供一圓盤銑刀加工一基材之示意圖。 [0044] 圖7係利用圖6所示圓盤銑刀形成一鑄模之示意圖。 [0045] 圖8係利用圖7所示鑄模翻制稜鏡片之示意圖。 [0046] 圖9係本發明液晶顯示裝置第二實施方式之側面結構示意 圖。 [0047] 圖10係製造圖9所示稜鏡片所採用之圓盤銑刀之平面示意 圖。 鲁 [0048] 圖11係本發明液晶顯示裝置第三實施方式之部份側面結. 構示意圖。 [0049] 圖12係製造圖11所示稜鏡片所採用之圓盤銑刀之平面示 意圖。 【主要元件符號說明】. , [0050] 液晶顯示裝置：4、5 [0051] 液晶顯示面板：40 [0052] 背光模組：49 [0053] 第一基板：41 [0054] 第二基板：42 [0055] 液晶層：43 [0056] 彩色濾光層：44 [0057] 黑色矩陣：4 5 · 096138176 表單編號A0101 第12頁/共20頁 1003317980-0 1.356198 [0058] [0059] [0060] [0061] [0062] [0063] [0064]3 is a side view showing the first embodiment of the liquid crystal display device of the present invention. 4 is a plan view showing a planar structure of a prism sheet of the liquid crystal display device shown in FIG. 3. 096138176 Form No. A0101 Page 11 of 20 1003317980-0 1356198 _^ 100 years 08i 31 nuclear replacement replacement [0042] Figure 5 is a manufacturing flow chart of the cymbal shown in Figure 4. [0043] FIG. 6 is a schematic view showing the processing of a substrate by a disc milling cutter. [0044] FIG. 7 is a schematic view showing the formation of a mold using the disc milling cutter shown in FIG. 6. [0045] FIG. 8 is a schematic view showing the use of the mold shown in FIG. 9 is a schematic side view showing a second embodiment of a liquid crystal display device of the present invention. Figure 10 is a plan view showing a disc milling cutter used for manufacturing the cymbal shown in Figure 9. [0048] FIG. 11 is a partial schematic view showing a side view of a third embodiment of a liquid crystal display device of the present invention. [0049] Figure 12 is a plan view showing the use of a disc milling cutter for use in the manufacture of the cymbal shown in Figure 11. [Main component symbol description]. [0050] Liquid crystal display device: 4, 5 [0051] Liquid crystal display panel: 40 [0052] Backlight module: 49 [0053] First substrate: 41 [0054] Second substrate: 42 Liquid Crystal Layer: 43 [0056] Color Filter Layer: 44 [0057] Black Matrix: 4 5 · 096138176 Form No. A0101 Page 12 / Total 20 Page 1003317980-0 1.356198 [0058] [0060] [0060] 0061] [00664] [0064]
[0065] [0066] [0067] [0068] [0069] [0070] [0071] [0072] [0073] 100年08月31日梭正替換頁 基材：401 表面：402 圓盤銑刀：403、503、603 本體：404 刀刃：405、505、605 凹槽：406 鑄模：407 基底：441 棱鏡：442、542、642 側面：443、543、643 光源：491 反射板：492 導光板：<9 3 第一擴散片：494 稜鏡片：495、595、695 第二擴散片·· 496 ' 096138176 表單編號A0101 第13頁/共20頁 1003317980-0[0067] [0067] [0073] [0073] [0073] 100 years on August 31, the shuttle is replacing the page substrate: 401 surface: 402 disc milling cutter: 403 , 503, 603 body: 404 blade: 405, 505, 605 groove: 406 mold: 407 base: 441 prism: 442, 542, 642 side: 443, 543, 643 light source: 491 reflector: 492 light guide: < 9 3 First diffuser: 494 Bracts: 495, 595, 695 Second diffuser · · 496 ' 096138176 Form number A0101 Page 13 / Total 20 pages 1003317980-0