201248577 六、發明說明： 【發明所屬之技術領域】 本發明係關於一種顯示系統(display system)，尤其是液晶 顯示系統(LCD display system)。並且特別地，本發明係關於 具有寬水平視角範圍及窄垂直視角範圍的顯示系統。” ' 【先前技術】 運用在某些特定場所的顯示系統，例如，車用顯示系 統、交通號誌等的顯示系統其水平視角範圍是越寬越好， 反之這些顯示系統的垂直視角範圍需受限制。例如，車用 顯示系統需有寬水平視角範圍，讓駕駛及乘客皆能看到顯 示影像，並且需有受限制的垂直視角範圍，以避免顒示影 像投射到車輛的擋風玻璃，影響駕駛的視線。於這些顯示 系統中、’其由光源所發射的光需藉由多個光學元件來調 整，來達成寬水平視角範圍、窄垂直視角範圍的目的。 f於具有寬水平視肖翻及f垂直視舰_顯示系統 之士刖技術例如有日本專利公開號第2〇〇2124112號案(以下 稱前案-)以及中華民國發明專利公告號第1253525號專利(以 下稱?案二）。此兩件先前技射是針對採職關示面板之 顯示系統所提出的方案。 絲夕！：姑ifίί平視角範圍及窄垂直視角範圍的顯示系 ί 整體職太低从水平視減®仍不夠 寬，例如低於95度。 續之有3平視角範圍及窄垂直視角範圍的顯示系 側光式發光二極體_-emitting敲， "、夺，達到所要求的輝度所需的LED顆數則相當 201248577 背光源時會有耗 ^ ° =以、’這些先前技術制側光式LED 電、運作過程溫度升高等問題。 【發明内容】 击古ίΐΐ^—面向在於提供—種具找水平制範圍及窄 高的顯示系統’其水平視角範圍高於95度，並且 本f明之另一面向在於提供具有寬水平視角範圍及窄垂 直視角範圍的液晶顯示系統’可以減少背光源的使用數 節省背光源所需之亮度或能量。 根據本發明之第一實施例之顯示系統其本身定義一水平 方向以及一垂直方向，並且包含平面光源⑻肪肛light ce)、稜鏡薄板(prism sheet)、透鏡薄板(iens sheet)以及百 葉窗薄板(louver sheet)。平面光源具有出光面，稜鏡薄板係設 置於平面光源之出光面上方。棱鏡薄板包含多個長條狀微稜 鏡結構。多個長條狀微稜鏡結構係沿水平方向平行排列。透 鏡薄板係設置於稜鏡薄板上方。透鏡薄板包含多個微透鏡結 構’百葉窗薄板係設置於透鏡薄板上方。百葉窗薄板包含多 個長條狀微百葉窗結構(micro-louver)。多個長條狀微百葉窗 結構大體上沿垂直方向而相互平行排列，並與水平方向成一 角度。光線從平面光源之出光面射出，穿過稜鏡薄板、透鏡 薄板以及百葉窗薄板，由棱鏡薄板、透鏡薄板以及百葉窗薄 板調整，致使顯示系統的水平視角範圍為高於95度，並且垂 直視角範圍為高於20度。 根據本發明之第二實施例之顯示系統包含平面光源、稜 鏡薄板、透鏡薄板、百葉窗薄板。稜鏡薄板係設置於平面光 源之出光面上方，且稜鏡薄板包含多個長條狀微稜鏡結構。 201248577 透鏡薄板係設置於棱鏡簿柘μ士 α , 透鏡結構。 包含多個長條狀微；稜？薄板之-侧，百葉窗薄板 之截面為非均-的梯^構。母一微稜鏡結構沿著其縱軸 令水ί方百葉窗薄板之多個微百葉窗結構與 該水千方向所成之角度範圍為約0度至約±1〇度。 律排具體實_巾’透鏡薄板之多個微透鏡結構為不規 於-具體實施例中’顯示系統更進一 i有ίϊ繼飾軸板上方，且㈣窗;薄板之間 臨的=^=£軸板綱麵結構中兩相 面光==:之?個鏡:鏡之4= 透鏡 附圖月;的優=精神可以藉由以下的發明詳述及所 【實施方式】 f發，係提供—種具有寬水平視角範圍及窄垂直視角r =顯不纽’其水平視角範圍為高於95度，並^其整U 度南。以下料述本發明之具體實_，藉以充分解說g 201248577 明之特徵、精神、優點以及可實施性。 佳閱第1圖及第2圖，第1嶋根據本發明之第一較 實施例之顯示系統1之外觀示意圖。第2圖係第1圖 金^不系統1料1圖巾的A-A線之剖面視圖。於本說明 j有的剖面視财’各元件_加上透視_表彰其結構 =第1目所示’根據本發明之第一較佳具體實施例之顯 =、、、'充1，其本身定義水平方向孖、法線方向ΑΓ以及垂直方 ^ K。法線方向#垂直於顯示系統i，且分別與水平方向 Ί直方向r相互垂直，而水平方向丑亦與垂直方向厂相 人i直。？示系統1包含邊框(bezel)11。邊框11其結構係配 二套至顯示系統1的邊緣，用以將顯示系統1的其他元件固 疋在一起。 _如第2圖所示，根據本發明之第一較佳具體實施例之顯 J包含平面光源10、稜鏡薄板12、透鏡薄板14以及 立葉窗薄板16。為了方便說明，本實施例僅以顯示系統i内 邛凡件來說明，因此第2圖未繪示出第i圖中之邊框u。 同樣示於第2圖，平面光源10具有出光面102。稜鏡薄 板12係設置於平面光源10之出光面ι〇2上方。棱鏡薄板12 包含多個長條狀微稜鏡結構122。多個長條狀微稜鏡結構122 係沿水平方向丑約略成平行排列。也就是說，每一個微棱鏡 結構122的縱軸是約略與Γ方向平行。詳言之，長條微稜鏡 結構122係沿第一排列方向排列，於本實施例中，第一排列 =向為水平方向//，如第2圖所示，微稜鏡結構122沿著水 平方向β排列，且兩兩長條微棱鏡結構丨22可為相互平行排 列，但本發明不以此為限。長條微稜鏡結構122係沿第二排 列方向延伸，也就是說，於每一條微稜鏡結構122中，微稜 201248577 鏡結構122之頂點會形成一條頂點線，其 二排列方向延伸。於本實施例中，第二排 K，且兩_點線可相互平行，然本發日林以此為限。 於-具體實施例中’棱鏡薄板12之多 中兩相臨的微稜鏡結構122具有間距d，如第2 “J。2兩2 相臨的微麵結構122之間距d馳佳軸為％微米， 發明不以此為限，微稜鏡結構122之間的間距d大小可 同設計需求而有所魏’舉躺言，當間距d增 以 ，加視角範圍’當間距d減小時’可以增加集光效果。 實施例中，棱鏡薄板12之每一微稜鏡結構122沿著其縱 截面為非均-的梯形。也就是說，每—微稜鏡結構&沿著 其縱軸之截面梯形，其高度或/及上底寬衫盡相同 之’微稜鏡結構122沿著平行第二排列方向且垂直第一排& 方向而形成-截面，如第2圖所示，截面為沿著平行於垂直 方向K且垂直於水平方向厂所形成，換言之，截面為沿著法 線方向#所形成。於本實施例中，微稜鏡結構12之^面為 梯形’藉此提升織鏡結制強度、避倾棱鏡結構崩毀、 蔽性’以及避免顯示祕丨出現看似波紋狀晝面的 「莫效應(Moir6 effects)」等等。 於本實施例中’ _微棱鏡結構122之截面可為相異或 相似之梯形，舉例而言，兩兩梯形結構可具有相同下底邊長 但其高度不相同，⑽成相異結構，或是兩兩梯形結構 具有相同的下底邊長度與高度_，但其高度不相同，以形 2似結構’但本發明不以此為限。此外，在同—條微複鏡 二構122中，可具有多個微稜鏡結構122之截面，各截面所 形成之梯形結構亦同上述可具有相異或相似之結構。 上述實施例僅描述兩兩微稜鏡結構122在相同截面下， 201248577 ’另-實施例中，在同 成非均-性梯形之截面結構/、有痛相互平行喊面，而形 同樣示於第2 ®，透鏡薄板14係設置於稜鏡薄板12上 方。透鏡薄板14包含多個微透鏡結構142。於本實施例中，201248577 VI. Description of the Invention: [Technical Field of the Invention] The present invention relates to a display system, particularly a liquid crystal display system. And in particular, the present invention relates to display systems having a wide horizontal viewing angle range and a narrow vertical viewing angle range. "[Prior Art] Display systems used in certain places, for example, display systems for vehicles, traffic signs, etc., the horizontal viewing angle range is as wide as possible, whereas the vertical viewing angle range of these display systems is subject to Restrictions. For example, the vehicle display system needs to have a wide horizontal viewing angle range so that both the driver and the passenger can see the displayed image, and a limited vertical viewing angle range is required to avoid the display of the image projected onto the windshield of the vehicle, affecting The line of sight of driving. In these display systems, 'the light emitted by the light source needs to be adjusted by a plurality of optical elements to achieve a wide horizontal viewing angle range and a narrow vertical viewing angle range. And f vertical sightships _ display system of the gentry technology such as the Japanese Patent Publication No. 2 〇〇 2124112 (hereinafter referred to as the previous case -) and the Republic of China invention patent number No. 1253525 (hereinafter referred to as the case 2) These two previous technical shots are aimed at the display system of the entry and display panel. Silky!: ififίί flat viewing angle range and narrow vertical viewing angle range The display system ί overall job is too low from the horizontal view reduction® is still not wide enough, for example, less than 95 degrees. Continued display with 3 flat viewing angle range and narrow vertical viewing angle range side light-emitting diode _-emitting knock, " The number of LEDs required to achieve the required brightness is equivalent to that of 201248577. When the backlight is used, it will consume ^ ° = , 'these prior art side-light LEDs, the temperature rise during operation, etc. 】 Gu Gu ΐΐ — —— —— —— —— —— —— —— —— —— —— —— —— —— —— —— —— —— —— —— —— —— —— —— —— —— —— —— —— —— —— —— —— —— —— —— —— —— —— —— —— —— —— —— —— —— —— —— —— The range of liquid crystal display system 'can reduce the number of backlights used to save the brightness or energy required by the backlight. The display system according to the first embodiment of the present invention defines a horizontal direction and a vertical direction, and includes a planar light source (8) Anal light ce), a prism sheet, an iens sheet, and a louver sheet. The planar light source has a light-emitting surface and a thin plate is provided. The prism sheet comprises a plurality of elongated micro-twisted structures. The plurality of elongated micro-twisted structures are arranged in parallel in a horizontal direction. The lens thin plate is arranged above the tantalum plate. A plurality of microlens structures are included. The louver sheet is disposed above the lens sheet. The louver sheet comprises a plurality of strip-shaped micro-louver structures. The plurality of strip-shaped micro-louver structures are arranged substantially parallel to each other in the vertical direction. And at an angle to the horizontal direction. Light is emitted from the exit surface of the planar light source, passes through the thin plate, the lens sheet and the louver sheet, and is adjusted by the prism sheet, the lens sheet and the louver sheet, so that the horizontal viewing angle range of the display system is higher than 95 degrees, and the vertical viewing angle range is higher than 20 degrees. A display system according to a second embodiment of the present invention comprises a planar light source, a prismatic sheet, a lens sheet, and a louver sheet. The tantalum plate is disposed above the light exit surface of the planar light source, and the tantalum plate comprises a plurality of elongated micro-twist structures. 201248577 Lens sheet system is set in the prism book 柘μα, lens structure. Contains multiple strips of micro; edge? The thin-plate-side, louvered sheet has a non-uniform cross-section. The mother-micro-small structure along its longitudinal axis causes the plurality of micro-louver structures of the water louver sheet to form an angle ranging from about 0 degrees to about ± 1 degree. The multi-lens structure of the lens sheet is irregular. In the specific embodiment, the display system is further advanced, and the (four) window is placed above the thin plate. The two-phase surface light in the structure of the shaft plate ==: the mirror: the mirror 4 = the lens of the lens month; the superiority = the spirit can be detailed by the following invention and the [implementation] f Provided with a wide horizontal viewing angle range and a narrow vertical viewing angle r = not visible 'the horizontal viewing angle range is above 95 degrees, and its full U degrees south. The details of the present invention are described below in order to fully explain the features, spirit, advantages, and implementability of g 201248577. 1 and 2, a first schematic view of the display system 1 according to the first comparative embodiment of the present invention. Fig. 2 is a cross-sectional view of the A-A line of the gold foil of the system. In the description of the present invention, the cross section of each of the components of the present invention is shown in the first preferred embodiment of the present invention. Define the horizontal direction 孖, the normal direction ΑΓ, and the vertical square ^ K. The normal direction # is perpendicular to the display system i, and is perpendicular to the horizontal direction in the horizontal direction, respectively, and the horizontal direction is also ugly with the vertical direction. ? The display system 1 includes a bezel 11. The frame 11 is structurally attached to the edge of the display system 1 for securing the other components of the display system 1 together. As shown in Fig. 2, a first preferred embodiment of the present invention comprises a planar light source 10, a thin plate 12, a lens sheet 14, and a vertical window sheet 16. For convenience of explanation, the present embodiment is described only by the internals of the display system i, and therefore the second frame is not shown in the second figure. Also shown in Fig. 2, the planar light source 10 has a light exit surface 102. The thin plate 12 is disposed above the light exit surface ι 2 of the planar light source 10. The prism sheet 12 includes a plurality of elongated micro-twist structures 122. The plurality of long strip-shaped micro-structures 122 are arranged in a slightly parallel arrangement in the horizontal direction. That is, the longitudinal axis of each of the microprism structures 122 is approximately parallel to the Γ direction. In detail, the strips of micro-structures 122 are arranged along the first array direction. In the present embodiment, the first array = the horizontal direction is / /, as shown in FIG. 2, the micro-structures 122 are along The horizontal direction β is arranged, and the two or two long microprism structures 22 can be arranged in parallel with each other, but the invention is not limited thereto. The elongated micro-twisted structure 122 extends in the second array direction, that is, in each of the micro-twisted structures 122, the apex of the micro-edge 201248577 mirror structure 122 forms a vertex line extending in two directions. In this embodiment, the second row K and the two _ dotted lines may be parallel to each other, but the present Japanese forest is limited thereto. In a specific embodiment, the two adjacent micro-twist structures 122 of the plurality of prism sheets 12 have a spacing d, such as the second "J. 2 two-two adjacent micro-surface structures 122. Micron, the invention is not limited thereto, and the distance d between the micro-twist structures 122 can be compared with the design requirements. When the spacing d is increased, the viewing angle range 'when the spacing d is decreased' can be Increasing the light collecting effect. In the embodiment, each of the micro-structures 122 of the prism sheet 12 has a non-uniform trapezoid along its longitudinal section. That is, each micro-structure & along its longitudinal axis The cross-section is trapezoidal, the height or / and the upper base wide-brimmed shirt are the same as the 'micro-twisted structure 122 along the parallel second array direction and perpendicular to the first row & direction, forming a cross section, as shown in Fig. 2, the cross section is Formed along a direction parallel to the vertical direction K and perpendicular to the horizontal direction, in other words, the cross section is formed along the normal direction #. In this embodiment, the surface of the micro-twist structure 12 is trapezoidal' Mirroring strength, collapse of the prism structure, and the ability to avoid the display of secrets "Moir6 effects" in the corrugated face and so on. In the present embodiment, the cross-section of the '-microprism structure 122 may be a different or similar trapezoid. For example, the two-two ladder structures may have the same lower base length but different heights, (10) into a different structure, or It is a two-two ladder structure having the same lower base length and height _, but the height is not the same, and the shape 2 is similar to the structure 'but the invention is not limited thereto. In addition, in the homo-micro-refractive mirror structure 122, a plurality of cross-sections of the micro-twisted structure 122 may be provided, and the trapezoidal structure formed by each cross-section may have a structure different or similar to that described above. The above embodiment only describes the two-two micro-twist structure 122 under the same cross-section, 201248577 'in another embodiment, in the same non-uniform trapezoidal cross-sectional structure /, the pain is parallel to each other, and the shape is also shown in The second ®, the lens sheet 14 is disposed above the rafter 12. Lens sheet 14 includes a plurality of microlens structures 142. In this embodiment,
Hit42為具有曲弧面之顆粒結構，其中微透鏡結構 142可為具有規律性之排列，舉例而言，兩兩微透鏡結構⑷ 之間皆具有相同關距，或是微透鏡結構142依棋格狀排 列。於另一實施例中，微透鏡結構142亦可為不規律性排 列，舉例而言，兩兩微透鏡結構142之間具有不等距之距 離、微透鏡結構142不具有特定方向制或^兩微透鏡結構 142之顆粒大小不同，如第2圖所示。 於一，體實施例中，當微透鏡結構142為不規律性排列 時，透鏡薄板14之多個微透鏡結構H2的分佈密度(所有微 透鏡結構所佔面積/形成微透鏡結構之表面的總面積）為約 65%〜75%。每一微透鏡結構142的直徑為約51微米〜65微 米。每一微透鏡結構142的半球幾何比例(微透鏡結構的高度/ 微透鏡結構的直徑)為約40%〜50%。多個微透鏡結構142的 201248577 122 僅叫有相_賴面的微稜鏡結構 mi的微透鏡結構142咖，然，經由f 不以此為限。此外，本實施例之圖示亦僅以 應微稜鏡結構122來說明，但本發明不以 ;二;= 的^透鏡結構⑷之間的間距可與微稜鏡 ^列。_間距*同’或是微透鏡結構142可為不規律 卜古同，，於第2圖」百葉窗薄板16係設置於透鏡薄板14 構特性葉八窗ί板16之透視圖，以表彰其結 夕如且n案專板16包含多個長條狀微百葉窗結構162。 ΐ列體上沿垂直方…略平行 以丄lid:成一角度。多個微百頁窗結構162用 平面工光源ΪΓ射出向光:^其^用類似光闕、光栅。從 ㈣把L I 未任合先學兀件調整的光線，通過百荦 =6後’光線之垂直出光角度範圍為約6〇度通口 ㈣的定祕讀出光_最 為。度)向垂直方向厂擴及4;;度:ί; 之i、il^本實施财，水付向Η與謂窗薄板μ ⑹’百葉窗薄板16之多個微百葉窗結構 且古方向為方向且延伸方向L與水平方向Η罝右 1 ^ 度，進一4:。上實:斤，央角細為约0度至±10 ΐ時如第2 ®所示’ #平方向Η為基準，依 •十方向而與延伸方向[形成央角錢圍為0度至1〇度， 201248577 同樣地，當夾角多為以水平方向Ή 形成時，此夾角0範圍為〇度至_1〇，基時針方向而 度至度。於本實施例中，如第$，此爽角婉圍為約0 垂直方向V進行延伸，且依循:平結 而试百#窗結構162沿著與水平方向Η 排列 方向進行延伸。因此，微百葉紐構特定 之延伸方向以接近正交方向設置，其中ί接、，ft構122 二方向有稍微的偏移。舉例而有，當== 方 構162與水平方向Η的夾角轉=;關= 伸方ΐ央:ίΐϊ葉窗結構162與微稜鏡結構122分別:i 声，β山角又’於本實施例中，角度範圍為80度到100 不确疋由微百葉窗結構為或微稜鏡結構結構122! 旱，而在順時或逆時針之夾角都可符合。 *、、’ 土 穿圖所示’光線從平面光源ig之出光面⑽射出， 中ΐίϊ薄ί ϋ透鏡薄板14以及百葉窗薄板16。第2圖 =貝“5己ρ代表光線行進方向。光線係由稜鏡薄板U、透 二5卢14 板16調整’致使水平視角範圍為高 又垂直視角為面於20度。於本實施例中，水平視角 ，至，度’並且垂直視角範圍為2G度至40度角 角範圍Θ的疋義係以最大輝度為基準，以法線#為中 ^見角為0度)向水平方向好擴及至最大輝度之一半的角产 i由1垂直視角範_的定義係以最大輝度為基準，以法線5 :心(視角為0度)向垂直方向F擴及至最大輝度之一半的 :為止。舉例而言，調控稜鏡薄板12之微稜鏡結構， &增加微棱鏡結構122之梯形截面的高度比例’以增加集 201248577 度比例，以增加視角的廣度。另外，調 ^百葉^板16之微百葉窗結構162的延伸方向，以調整光 源通過的路徑，進而改變視角或亮度。此外，改變透鏡 14之微透鏡結構142时布紐，藉以增加集光效果，或是 $整微透鏡結構142的半徑弧度分布，改變視角的 度。 微鐘如第2圖所示’稜鏡薄板12之多個 ίίϋί f平面統ig，並錢鏡薄板14之多個 m與微透鏡142分別面向相對之方向。=實;=、，= 棱，結構122面向平面光源10，亦即將微稜鏡結構i22之上 f22 __光源1G之光_懷棱鏡結構 之梯形的兩斜邊影響，而往兩側邊擴散，以增加視角之 廣度。同時’利用朝上方設置之微透鏡結構142來補償^ 效果，以增加亮度，使得廣視角與高亮度都可兼具。〃 於另-具體實施射，如第3 _示，稜鏡薄板^ 個微稜鏡結構122面向透麟板14，並且it鏡馳 纖透鏡結構142面__板12。也狀 !22與微透鏡結構142為面相對，且分別面向=向。構 於本實施财，微稜鏡結構122面向影像形成面板18，= 將微棱鏡結構122之上底邊|肚方設置，㈣，平 之光路5：到微稜鏡結構122之梯形的影響，具有 '磨 效果。第3圖中標記即代表光線行進方向有 2圖中的光路的形態與第3圖中的光路形態不同: = 具有與第2圖相同號碼標記之元件，有相 = 及功能，在此不多做贅述。於另—實施例中，第2 圖所示之齡系統1若配置LED光源，適合做為交 誌，但本發明不以此為限，亦可運用於車用顯示器。， 201248577 根據本發明之第二較佳具體實施例之顯示系統1之外觀 仍如第1圖所示。請參閱第4圖，第4圖係繪示根據本發明 之第二較佳具體實施例之顯示系統1沿第1圖中的A_A線之 剖面視圖。 、 ，於另一實施例中，顯示系統1更包含影像形成面板18與 偏光片182，如第4、5圖所示。影像形成面板18係設置於 百葉窗薄板16上方，用以形成影像，舉例而言，影像形成面 板18可為液晶面板、電泳顯示器、電漿顯示面板或立體顯示 器等。第4、5圖分別與第2、3圖具有相同號碼標記之^ 件’有相同或類似的結構以及功能，在此不多做贅述。 於一具體實施例中，偏光片182設置於百葉窗薄板16上 方，換言之，偏光片182設置於板葉窗薄板16與影像形成面 板18之間。於本實施例中’偏光片182與百葉窗薄板％之 間具有間距s ’利用間距s來改變視野上的焦距，進而消除原 有產生的莫瑞效應。本實施例中，可以利用框架、間隙^勿. 墊片等物件來保持偏光片182與百葉窗薄板16之間的間^巨 s，以增加穩定性。 於另一實施例中，偏光片182具有霧化作用，用以減少 亮度不均勻，以達到亮度補正之效果，換言之，利用具有 化效果之偏光片182用來均勻亮度，避免產生局部亮/區或 部暗區的現象，其中偏光片182之霧度為2〇〇/0〜4〇〇/0，然，本 發明不以此為限。然，本實施例僅以設置於影像形成面''板18 下方之偏光片182來說明，但影像形成面板18上方也可 霧度之偏光片。 、$ 於-具體實施例中，如第4、5圖所示，平面光源1〇 含導光元件104以及安置在導光元件丨⑽之“個側邊處^ 個發光二滅1G6，其中Μ 4丨、2或3 ^多個發光二極& 13 201248577 106被驅動以發射光線射入導光元件104，光線進而被導光元 件104導向稜鏡薄板12。然，本實施例僅提供利用側邊發光 元件結合導光元件來說明形成平面光源，但不限於此。於本 實施例中，越多發光二極體106設置於導光元件104之側邊 處時，顯示系統1其周邊與中心亮度皆可提升，同時也可使 得水平視角範圍越寬。Hit42 is a granular structure having a curved surface, wherein the microlens structure 142 may have a regular arrangement, for example, the two or two microlens structures (4) have the same distance, or the microlens structure 142 Arranged in a shape. In another embodiment, the microlens structure 142 may also be arranged irregularly. For example, the two lens structures 142 have unequal distances therebetween, and the microlens structure 142 does not have a specific direction or two The particle size of the microlens structure 142 is different, as shown in FIG. In one embodiment, when the microlens structure 142 is irregularly arranged, the distribution density of the plurality of microlens structures H2 of the lens sheet 14 (the area occupied by all the microlens structures / the total surface of the microlens structure) The area) is about 65% to 75%. Each microlens structure 142 has a diameter of between about 51 microns and about 65 microns. The hemispherical geometric ratio of each microlens structure 142 (the height of the microlens structure / the diameter of the microlens structure) is about 40% to 50%. The 201248577 122 of the plurality of microlens structures 142 is only called the microlens structure 142 of the microscopic structure mi of the phase. However, the f is not limited thereto. In addition, the illustration of the present embodiment is also illustrated only by the micro-twist structure 122, but the spacing between the lens structures (4) of the present invention is not as good as that of the micro-structures. _pitch* is the same as 'or the microlens structure 142 can be irregular, and in the second figure, the louver thin plate 16 is arranged on the lens sheet 14 to define the characteristic of the eight-window panel 16 in recognition of the knot. The eve of the case 16 includes a plurality of elongated louver structures 162. On the column body, along the vertical side...a little parallel to 丄lid: at an angle. A plurality of micro-page windows structure 162 is used to emit light toward the light by a planar light source: ^ is used to resemble a pupil or a grating. From (4) The light that has been adjusted by L I without the first element is passed through the range of the vertical light exit angle of the light ray of about 6 约 degrees (4). Degree) to the vertical direction of the factory expansion and 4;; degree: ί; i, il ^ implementation of the financial, water pay Η and the window slab μ (6) 'louver window 16 multiple micro-louver structure and the ancient direction is the direction The extension direction L and the horizontal direction are 1 ^ degrees to the right, and a 4:. On the real: Jin, the corner of the corner is about 0 degrees to ± 10 ΐ when the second ® '# flat direction Η as the benchmark, according to the direction of the ten direction and the extension direction [formed into the corner of the money range of 0 degrees to 1 〇度, 201248577 Similarly, when the angle is mostly formed in the horizontal direction ,, the angle 0 ranges from 〇 to 〇 〇, and the base hour direction is degree to degree. In this embodiment, as shown in the $th, the refreshing angle is extended by about 0 in the vertical direction V, and according to the flattening, the window structure 162 is extended along the horizontal direction. Therefore, the specific extension direction of the micro louver is set to be close to the orthogonal direction, wherein the φ, ft, and 122 directions are slightly offset. For example, when == square 162 and the horizontal direction Η angle turn =; off = stretch square: ΐϊ ΐϊ leaf structure 162 and micro 稜鏡 structure 122 respectively: i sound, β mountain angle and 'in this implementation In the example, the angle range is 80 degrees to 100. It is not true that the micro-louver structure is or the micro-structure structure 122! Drought, and the angle between the clockwise and counterclockwise can be met. The light rays (10) are emitted from the light source (10) of the planar light source ig, and the lens sheet 14 and the louver sheet 16 are emitted. Figure 2 = "5 ρ represents the direction of travel of the light. The light is adjusted by the thin plate U, through the 25 lbs 14 plate 16" so that the horizontal viewing angle range is high and the vertical viewing angle is 20 degrees. In this embodiment Medium, horizontal viewing angle, to, degree 'and vertical viewing angle range from 2G to 40 degrees angular range Θ 疋 系 以 以 以 以 以 以 以 以 以 以 以 以 以 以 以 以 以 以 以 以 以 以 以 以 以 以 以 以 好 好 好 好 好 好 好 好The angle of expansion to one-half of the maximum luminance is defined by the definition of the vertical angle of view. The maximum luminance is used as the reference, and the normal line 5: the heart (the angle of view is 0 degrees) is expanded in the vertical direction F to one-half of the maximum luminance: For example, adjusting the micro-twist structure of the thin plate 12, & increasing the height ratio of the trapezoidal cross-section of the microprism structure 122 to increase the ratio of 201248577 degrees to increase the breadth of the viewing angle. The extending direction of the micro-louver structure 162 of 16 is to adjust the path through which the light source passes, thereby changing the viewing angle or brightness. Further, changing the microlens structure 142 of the lens 14 to increase the light collecting effect, or the whole microlens structure Radius arc distribution of 142, The degree of viewing angle is changed. The micro-clock is as shown in Fig. 2, and a plurality of 稜鏡 板 12 12 , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , ,, = rib, the structure 122 faces the planar light source 10, that is, the influence of the two oblique sides of the trapezoidal structure of the f22 __light source 1G on the micro-twist structure i22, and spread to both sides to increase the viewing angle At the same time, 'the microlens structure 142 disposed upward is used to compensate the effect, so as to increase the brightness, so that both the wide viewing angle and the high brightness can be combined. 另 Another-specific implementation, such as the third _ show, 稜鏡The thin plate ^ micro-twist structure 122 faces the translucent plate 14, and the iterative fiber lens structure 142 surface __ plate 12. The shape! 22 and the microlens structure 142 face each other, and respectively face = direction. In the implementation, the micro-twist structure 122 faces the image forming panel 18, = the bottom edge of the microprism structure 122 is arranged, the belly side is set, (4), the flat light path 5: the trapezoidal influence of the micro-twist structure 122 has a 'grinding Effect. The mark in Figure 3 represents the shape of the light path in the direction of the light. 3 The optical path in the figure is different: = The component with the same number as in Figure 2 has phase and function, and will not be described here. In another embodiment, the system 1 shown in Figure 2 The LED light source is configured as a communication, but the invention is not limited thereto, and can also be applied to a vehicle display. 201248577 The display system 1 according to the second preferred embodiment of the present invention still has the same appearance as the first one. 4 is a cross-sectional view of the display system 1 along line A_A of FIG. 1 according to a second preferred embodiment of the present invention. The display system 1 further includes an image forming panel 18 and a polarizer 182 as shown in FIGS. 4 and 5. The image forming panel 18 is disposed above the louver 16 for forming an image. For example, the image forming panel 18 can be a liquid crystal panel, an electrophoretic display, a plasma display panel, or a stereoscopic display. The fourth and fifth figures have the same or similar structures and functions as those of the second and third figures having the same reference numerals, and will not be described here. In one embodiment, the polarizer 182 is disposed over the louver sheet 16, in other words, the polarizer 182 is disposed between the panel louver 16 and the image forming panel 18. In the present embodiment, the distance s between the polarizer 182 and the louver sheet % is used to change the focal length on the field of view by using the pitch s, thereby eliminating the Murray effect originally generated. In this embodiment, an object such as a frame, a gap, a spacer, or the like can be used to maintain the space between the polarizer 182 and the louver sheet 16 to increase stability. In another embodiment, the polarizer 182 has an atomizing effect for reducing uneven brightness to achieve the effect of brightness correction. In other words, the polarizing plate 182 having a chemical effect is used for uniform brightness to avoid local light/region. Or the phenomenon of the dark region, wherein the haze of the polarizer 182 is 2 〇〇 / 0 〜 4 〇〇 / 0, however, the invention is not limited thereto. However, this embodiment is described only by the polarizer 182 disposed under the image forming surface panel 18, but the image forming panel 18 is also a haze polarizer. In the specific embodiment, as shown in FIGS. 4 and 5, the planar light source 1 includes a light guiding element 104 and is disposed at one side of the light guiding element 10 (10), and two light emitting diodes 1G6, wherein 4丨, 2 or 3^ multiple light-emitting diodes & 13 201248577 106 are driven to emit light into the light guiding element 104, and the light is guided by the light guiding element 104 to the thin plate 12. However, this embodiment only provides utilization The side light-emitting element is combined with the light-guiding element to describe the formation of the planar light source, but is not limited thereto. In this embodiment, the more the light-emitting diode 106 is disposed at the side of the light-guiding element 104, the periphery of the display system 1 The central brightness can be increased, and the horizontal viewing angle range can be made wider.
請參閱第6圖及第7圖。第6圖係採用相同側光式LED 背光源時，第4圖架構之液晶顯示系統、第5圖架構之液晶 顯示系統以及前案一之液晶顯示系統’其關於水平方向輝度 的模擬數據比較圖。第7圖則是此三種液晶顯示系統，其關 於垂直方向輝度的模擬數據比較圖。在此兩圖中，視角範圍 的定義係以最大輝度為基準，以法線#為中心(視角為〇度) 向水平方向或垂直方向擴及至最大輝度之一半的角度為止。X 從第6圖的數據可清楚看出，採前案一之液晶顯示系 統，其水平視角範圍低於約95度。採前案一之液晶顯示系统 為例，其水平視角範圍為約92度。採第4圖架構之液晶顯示 系，，其水平視角範圍則為約104度。採第5圖架構之液晶 顯示系統的水平視角範圍比採帛4 ®帛構之液晶顯示系^ 水平視角範圍還寬，但找第5贿構之液晶顯示紐盆由Please refer to Figure 6 and Figure 7. Figure 6 is a comparison of simulated data on horizontal brightness when the same side-lit LED backlight is used, the liquid crystal display system of Figure 4, the liquid crystal display system of Figure 5, and the liquid crystal display system of the previous case. . Figure 7 is a comparison of the simulated data of the three kinds of liquid crystal display systems with respect to the vertical luminance. In the two figures, the definition of the range of viewing angle is based on the maximum luminance, and is extended to the horizontal or vertical direction to the angle of one-half of the maximum luminance centered on the normal # (the angle of view). X It is clear from the data in Figure 6 that the liquid crystal display system of the pre-production case has a horizontal viewing angle range of less than about 95 degrees. For example, the liquid crystal display system of the pre-production case has a horizontal viewing angle range of about 92 degrees. The liquid crystal display system of the structure of Fig. 4 has a horizontal viewing angle of about 104 degrees. The horizontal viewing angle range of the liquid crystal display system adopting the structure of Fig. 5 is wider than that of the liquid crystal display system of the picking 4® structure, but the liquid crystal display of the fifth bribe is
辦〜肌日日职不乐統其整體的輝度遠高於採前牵 系統其整體輝度。 ' 一之液晶顯示 上述四種液晶顯示系統， 從第7圖的數據可清楚看出，上述四種 其垂直視肖範ϋ t可限齡約20度至40度。 請參閱第8圖及第9圖。第8圖係採_關光式咖 201248577 :3時盆t二f、架構之液晶顯示系統以及前案二之液晶頻 此忒方向相對輝度的模擬數據比較圖。第9 =ίΐ it視角範_)為92度。採第4圖架構之液 柱ϊί平視角範圍(θ2)則為、約104度。從第9圖 =據，楚看出，採前案二之液晶顯示系統以及採第4圖 之液晶顯示系統，其垂直視角範圍皆可限制在約2〇度至 40度0 見，，根據本發明之顯示系統其水平視角範圍大於95 =，較先，技術之顯示系統的水平視角範圍來得寬。根據本 ，明之顯示系統其垂直視角範圍為約20度至40度。並且， f本發明之齡系統其整麟度也較先紐狀顯示系統 f f體輝度來得高。由於整麟度提高，使得在本實施例的 ^構下，經由調控稜鏡薄板12、透鏡薄板14以及百葉窗薄 | 16可以達到廣視角與保持亮度之效果，不需要特別增加背 光源之使用數量或是增加其亮度，因此還可達到節省背光源 之數量或能量。 ’、 一模擬案例中，採第4圖架構之液晶顯示系統與採先 =技術之液晶顯示系統做比較。此兩液晶顯示系統採用相同 的6.5对尺寸液晶顯示面板以及側光式LED背光源。若中心 |見_角為0度)輝度要求3458 nits (cd/m2)，採先前技術之液晶 -員不系統需要116顆發光二極體，而採第4圖架構之液晶顯 15 201248577 不系統僅需要32顆發光二極體 根據本發批料_麵；^地，與切驗她， 升高’等問題。 、電心低’也較無運作過程溫度 ίίίΐΞ變及具相等性的安排於本發明所“請之專利範 .,。因此，本發明所申請之專利範圍的範疇應該根 作最寬廣的解釋，以致使其涵蓋所有可能ϊί 述本發明之實=^詳述’係希望能更加清楚描 涵叢雜㈣《日限制。相反地，其目的是希望能 變以及具相等性的安排 201248577 【圖式簡單說明】 之外雜縣發明之[較佳越實關之顯示系統 視圖? 2圖係第1圖之顯示系統沿第1圖中的A_A線之剖面 之另本目㈣之第—較健體實補_示系統 之剖^圖圖係根據本發明之第二較佳具體實施儀顯示系統 之另㈣n佳频實__示系統 數據1較圖圖為—種液μ如系、統制於水平方向輝度的模擬 數據=圖圖。為三種液晶顯衫統錢於垂直方向輝度 的模擬 模繼轉樣樹向相__ 模擬種液㈣示祕其關於垂直方向相__ 【主要元件符號說明】 :顯示系統 10 :平面光源 201248577 102 :出光面 106 :發光二極體 12 :棱鏡薄板 14 :透鏡薄板 16 :百葉窗薄板 18 :影像形成面板 水平方向 :法線方向 d :間距 φ :夾角 α:垂直視角範圍 104 :導光元件 11 :邊框 122 :微稜鏡結構 142 :微透鏡結構 162 :微百葉窗結構 182 :偏光片 Κ :垂直方向 Ζ:微百葉窗結構的延伸方向 s :間距 Θ:水平視角範圍The overall brightness of the whole day is much higher than that of the pre-harvest system. 'One liquid crystal display The above four liquid crystal display systems, as can be clearly seen from the data in Fig. 7, the above four vertical viewing angles can be limited to about 20 to 40 degrees. Please refer to Figure 8 and Figure 9. Fig. 8 is a comparison chart of the relative data of the relative brightness of the 忒 t 式 式 式 2012 2012 2012 2012 2012 2012 2012 2012 2012 2012 2012 2012 2012 2012 2012 2012 2012 2012 2012 2012 2012 2012 2012 2012 2012 2012 2012 2012 2012 2012 2012 2012 2012 2012 2012 2012 2012 2012 2012 2012 2012 2012 2012 2012 2012 2012 2012 2012 2012 2012 2012 2012 2012 2012 2012 2012 2012 2012 2012 2012 2012 2012 2012 The 9th = ίΐ it perspective _) is 92 degrees. The liquid column of the structure of Fig. 4 is 104, and the angle of view (θ2) is about 104 degrees. From the picture 9 of the data, it can be seen that the liquid crystal display system of the second case and the liquid crystal display system of the fourth picture can be limited to about 2 to 40 degrees in the vertical viewing angle range. The display system of the invention has a horizontal viewing angle range greater than 95 =, and the horizontal display angle range of the prior art display system is wider. According to the present invention, the display system has a vertical viewing angle ranging from about 20 degrees to 40 degrees. Moreover, the degree of gradation of the system of the invention is also higher than that of the first-order display system f f body. Due to the improvement of the gradation, the effect of the wide viewing angle and the brightness can be achieved by adjusting the thin plate 12, the thin lens plate 14 and the louver thin film 16 in this embodiment, without increasing the number of backlights. Or increase its brightness, so you can save the amount or energy of the backlight. In a simulation case, the liquid crystal display system of the 4th figure architecture is compared with the liquid crystal display system of the first = technology. The two liquid crystal display systems use the same 6.5-pair LCD panel and edge-lit LED backlight. If the center|see _ angle is 0 degree) the brightness requirement is 3458 nits (cd/m2), the liquid crystal-members of the prior art do not need 116 light-emitting diodes, and the liquid crystal display of the structure of Figure 4 is 201248577. Only 32 LEDs are needed according to the batch _ face; ^ ground, and cut her, raise 'and other issues. The low-powered 'is also less than the operating process temperature ί 及 及 及 及 及 及 及 相等 相等 相等 相等 相等 相等 相等 相等 相等 。 。 。 。 。 。 。 。 。 。 , , , , , , , , , , , , , , , , , , , , , So that it covers all possible ϊ 述 本 = ^ ^ ^ ^ ^ ^ 希望 希望 希望 希望 希望 希望 希望 希望 ^ ^ ^ ^ ^ ^ 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四Description] Invented by the Miscellaneous County [Preferred to the more practical display system view? 2 Figure 1 The display system of Figure 1 along the A_A line in Figure 1 of the other section (4) - the more healthy body The system diagram of the second preferred embodiment of the present invention is based on the fourth embodiment of the present invention. The system data 1 is shown in the figure. The simulation data = graph. For the three kinds of liquid crystal display shirts, the analog model of the vertical direction of the luminance is transformed into the phase of the tree __ analog seed liquid (four) shows its vertical phase __ [main symbol description]: display System 10: planar light source 201248577 102 : Light-emitting surface 106: Light-emitting diode 12: Prism sheet 14: Lens sheet 16: Louver sheet 18: Image forming panel Horizontal direction: Normal direction d: Pitch φ: Angle α: Vertical viewing angle range 104: Light guiding element 11: Border 122: micro-twist structure 142: microlens structure 162: micro-louver structure 182: polarizer Κ: vertical direction Ζ: extension direction of micro-louver structure s: pitch Θ: horizontal viewing angle range