97· l 〇 j M337755 九、新型說明： 【新型所屬之技術領域】 本新型是有關於一種光學元件，且特別是有關於一種 具有複數個凸塊之光學元件。 【先前技術】97· l 〇 j M337755 IX. New description: [New technical field] The present invention relates to an optical element, and more particularly to an optical element having a plurality of bumps. [Prior Art]
近年來光電相關技術不斷推陳出新，加上數位化時代 的到來，進而推動了液晶顯示器市場的蓬勃發展。液晶顯 示器（Liquid Crystal Displayer ; LCD)具有高畫質、體積小、 重量輕、低電壓驅動、低消耗功率及應用範圍廣等優點， 因此被廣泛地應用於可攜式電視、行動電話、筆記型電腦 以及桌上型顯示器等消費性電子或電腦產品，並逐漸取代 陰極射線管（Cathode Ray Tube ; CRT)成為顯示器的主流。 背光模組為液晶顯示面板的關鍵零組件之一。有鑒於 液晶本身並不會發光，因此需要使用背光模組來供應光 源，藉以使液晶面板能夠顯示正常且亮度勻稱之影像。背 光模組中通常具有集光元件，例如擴散片（diffusion sheet) 與增亮膜（brightness enhancement film)，以增加出射光線之 輝度，使出射光線的分佈能夠更加均勻。 【新型内容】 本新型一方面就是在提供一種集光元件，用以將背光 模組所射出的光線往中央集中。 根據本新型之上述目的，提出一種集光元件，其包含 基材以及複數個棱鏡。該些稜鏡排列於基材上，且每一稜 5 M337755 鏡具有一相對高峰以及至少一相對低峰。相對低峰之稜線 與相對高峰之稜線等長，且所有相對高峰與相對低峰之稜 線均相互平行。 由上述可知，本新型之棱鏡上相對低峰的設計，有助 於減少疊紋效應（Moir6 Effect)且不減損集光元件之輝度。 【實施方式】In recent years, optoelectronic related technologies have been continuously introduced, and the arrival of the digital era has promoted the vigorous development of the liquid crystal display market. Liquid crystal display (LCD) is widely used in portable TVs, mobile phones, and notebooks because of its high image quality, small size, light weight, low voltage drive, low power consumption, and wide application range. Consumer electronics or computer products such as computers and desktop displays have gradually replaced cathode ray tubes (CRTs) as the mainstream of displays. The backlight module is one of the key components of the liquid crystal display panel. In view of the fact that the liquid crystal itself does not emit light, it is necessary to use a backlight module to supply the light source, so that the liquid crystal panel can display a normal and well-balanced image. The backlight module usually has a light collecting element, such as a diffusion sheet and a brightness enhancement film, to increase the brightness of the emitted light, so that the distribution of the emitted light can be more uniform. [New Content] One aspect of the present invention is to provide a light collecting element for concentrating the light emitted by the backlight module toward the center. In accordance with the above objects of the present invention, a light collecting element is provided which includes a substrate and a plurality of prisms. The crucibles are arranged on the substrate, and each edge 5 M337755 mirror has a relative peak and at least one relatively low peak. The ridgeline of the relatively low peak is as long as the ridgeline of the opposite peak, and the ridgelines of all the relative peaks and the relatively low peaks are parallel to each other. As can be seen from the above, the relatively low peak design of the prism of the present invention helps to reduce the Moir6 Effect without detracting from the luminance of the light collecting element. [Embodiment]
上述之先前技術可知，為了讓液晶面板能夠顯示正常 且亮度勻稱之影像，背光模組中通常具有集光元件，例如： 增亮膜與擴散膜，以增加出射光線之輝度，使出射光線的 分佈能夠更加均勻。 再者，習知增亮膜大多是藉由週期性的直線凸塊來集 中光線，但這種形狀的凸塊容易與液晶顯示器的液晶晝素 產生疊紋效應（ΜοίΓέ Effect)，進而造成視覺上的缺陷。因 此，本新型下述實施例將提出一種集光元件，以解決上述 的問題。 請參照第1圖，其繪示依照本新型一較佳實施例的一 種集光元件的立體圖。第2圖係繪示第1圖之集光元件的 剖面圖。集光元件100包含一基材102以及複數稜鏡104。 每一稜鏡104包含一相對高峰106與至少一相對低峰108。 所有相對高峰之稜線l〇6a與相對低峰之稜線108a均相互 平行，且相對低峰之稜線108a為一連續稜線，其長度與相 對高峰之稜線l〇6a等長。在一實施例中，相對低峰108位 於相對高峰106的其中一側。在另一實施例中，相對低峰 108位於相對高峰106的兩側（未繪示於圖面）。在又一實施 M337755 例中，在相對高峰106同一侧之複數相鄰的相對低峰ι〇8 之間的間距W!介於2/Z m〜15/z m之範圍。在又一實施例 中’稜鏡104間的鏡谷11〇具有一 v形截面。 請參照f 3 ffl，其綠示依照本新型一較佳實施例的一 稜鏡上的尺寸關係圖。在本案的實施例中，每一稜鏡有些 尺寸關係，能使整個集光元件的效用達到更好。 在一實施例中，相對高峰1〇6之高度％介於⑺以㈤〜 l〇〇Vm之間。在另-實施例中，相對高峰ι〇6之高度Hi 介於10/z m〜50/z m之間。 *在一實施例中，相對低峰1〇8之高度Ha與相對高峰ι〇6 1比值小於0.2。在另一實施例巾，相對低峰1〇8 之高度^與相對高峰106之高度％比值介於〇〇ι〜〇ι〇。 在-實施例中，相對低峰1〇8之高度H2介於〇·— 二ΓγΓ之間。在另一實施例中，相對低峰108之高度H2 介於1·〇从m〜2.0"m之間。 之古^ w實施例中’相對低峰1〇8之位置高於相對高峰106 針：：】〇? I在另一實施例中，相對低峰108位於相 對间峰1〇6之高度H42/3〜4/5之間。 棱鏡=關4:，其緣示依照本新型-較佳實施例的-^度關係圖。在本案的實施例中，每—稜鏡有此 施：中ΓΓ吏整個集光元件的效用達到更好。在-實 在另-實施'對向峰106之内頂角介於70〜110度之範圍。 之範圍實施例中，相對低峰108之内頂角介於70〜110度 以上所舉之菱鏡的尺寸或角度參數均僅為例示，並非According to the above prior art, in order to enable the liquid crystal panel to display a normal and well-balanced image, the backlight module usually has a light collecting element, such as a brightness enhancement film and a diffusion film, to increase the brightness of the emitted light and to distribute the emitted light. Can be more even. Moreover, conventional brightening films mostly concentrate light by periodic linear bumps, but the bumps of this shape easily cause a crease effect with the liquid crystal display of the liquid crystal display, thereby causing visual defects. . Therefore, the following embodiments of the present invention will propose a light collecting element to solve the above problems. Referring to Figure 1, a perspective view of a light collecting element in accordance with a preferred embodiment of the present invention is shown. Fig. 2 is a cross-sectional view showing the light collecting element of Fig. 1. The light collecting element 100 includes a substrate 102 and a plurality of turns 104. Each turn 104 includes a relative peak 106 and at least one relatively low peak 108. All of the relatively high peak ridges 〇6a and the relatively low peak ridgelines 108a are parallel to each other, and the relatively low peak ridgeline 108a is a continuous ridgeline whose length is equal to the ridge line l〇6a of the opposite peak. In one embodiment, the relatively low peak 108 is located on one of the opposite peaks 106. In another embodiment, the relatively low peaks 108 are located on opposite sides of the opposite peak 106 (not shown). In still another embodiment, M337755, the spacing W! between the plurality of adjacent relatively low peaks ι8 on the same side of the peak 106 is in the range of 2/Z m to 15/z m. In yet another embodiment, the mirror valley 11 稜鏡 between the turns 104 has a v-shaped cross section. Please refer to f 3 ffl, which shows a dimensional relationship diagram on a stack according to a preferred embodiment of the present invention. In the embodiment of the present invention, each of the 稜鏡 has a dimensional relationship that enables the overall concentrating element to be more effective. In one embodiment, the height % relative to the peak value of 1〇6 is between (7) and (5) to l〇〇Vm. In another embodiment, the height Hi of the relative peak ι 6 is between 10/z m and 50/z m. * In one embodiment, the ratio of the height Ha of the relatively low peaks 1 〇 8 to the relative peak ι 〇 6 1 is less than 0.2. In another embodiment, the ratio of the height of the relatively low peak 1〇8 to the height of the relative peak 106 is between 〇〇ι~〇ι〇. In the embodiment, the height H2 of the relatively low peak 1〇8 is between 〇·−ΓΓγΓ. In another embodiment, the height H2 of the relatively low peak 108 is between 1 and 〇 from m to 2.0 " m. In the embodiment, the position of 'relatively low peak 1〇8 is higher than the relative peak 106::】〇? I In another embodiment, the relatively low peak 108 is at the height of the relative peak 1〇6 H42/ Between 3 and 4/5. Prism = Off 4: The relationship is shown in accordance with the present invention - the preferred embodiment. In the embodiment of the present case, each of the 稜鏡 has the effect that the effect of the entire concentrating component of the sputum is better. The apex angle of the opposite peak 106 is between 70 and 110 degrees. In the embodiment of the range, the apex angle of the relatively low peak 108 is between 70 and 110 degrees. The size or angle parameter of the prism is only an example, not
M337755 用以限制本新型，習知此項技藝者應視實際需要彈性選擇 之。 上述實施例所揭露的集光元件除了可應用在液晶顯示 器外，其它照明設備（例如：燈具、美術燈、手電筒與路 燈）與平面顯示器也都可以應用上述集光元件來增加出射 光線的輝度。 綜以上所述，由於本新型上述實施例之稜鏡上相對低 峰的設計，有助於減少疊紋效應（ΜοίΓέ Effect)且不減損集 光元件之輝度。 雖然本新型已以一較佳實施例揭露如上，然其並非用 以限定本新型，任何熟習此技藝者，在不脫離本新型之精 神和範圍内，當可作各種之更動與潤飾，因此本新型之保 護範圍當視後附之申請專利範圍所界定者為準。 【圖式簡單說明】 為讓本新型之上述和其他目的、特徵、優點與實施例 能更明顯易懂，所附圖式之詳細說明如下： 第1圖係繪示依照本新型一較佳實施例的一種集光元 件的立體圖； 第2圖係緣示第1圖之集光元件的剖面圖； 第3圖係緣示依照本新型一較佳實施例的一棱鏡上的 尺寸關係圖；以及 第4圖係繪示依照本新型一較佳實施例的一棱鏡上的 角度關係圖。M337755 is used to limit the new model, and those skilled in the art should flexibly select it according to actual needs. The light collecting elements disclosed in the above embodiments can be applied to other lighting devices (e.g., lamps, art lamps, flashlights, and street lamps) and flat panel displays to increase the brightness of the emitted light, in addition to the liquid crystal display. In summary, due to the relatively low peak design of the above-described embodiments of the present invention, it is helpful to reduce the crease effect without detracting from the luminance of the concentrating element. Although the present invention has been described above in terms of a preferred embodiment, it is not intended to limit the present invention, and it is to be understood that those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention. The scope of the new protection is subject to the definition of the scope of the patent application. BRIEF DESCRIPTION OF THE DRAWINGS The above and other objects, features, advantages and embodiments of the present invention will become more apparent and understood. 2 is a perspective view of a light collecting element; FIG. 2 is a cross-sectional view of the light collecting element of FIG. 1; FIG. 3 is a dimensional relationship diagram of a prism according to a preferred embodiment of the present invention; Figure 4 is a diagram showing the angular relationship of a prism in accordance with a preferred embodiment of the present invention.
M337755 【主要元件符號說明】 100 :集光元件 110 ： 鏡谷 102 :基材 H!： 南度 104 :稜鏡 H2 : 高度 106 :相對高峰 Αι ： 内角 106a :稜線 A2 : 内角 108 :相對低峰 Wi ： 間距 108a :棱線M337755 [Description of main component symbols] 100: Light collecting element 110: Mirror Valley 102: Substrate H!: South 104: 稜鏡H2: Height 106: Relative peak Αι: Inner angle 106a: ridgeline A2: Inner angle 108: Relatively low peak Wi : Spacing 108a: ridgeline
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