200936954 九、發明說明： 【發明所屬之技術領域】 本發明係關於一種發光板，其包括一層，該層具有一上 表面、一下表面及複數個光源。該發光板進一步包括光學 元件之一分配，各光學元件形成一自該上表面朝該下表面 ‘延伸之凹槽，其中各光學元件包括配置於該凹槽之一底部 部分之光源之至少一者。本發明亦係關於一種用於提供此 種發光板之方法。 〇 【先前技術】 發光二極體（LED)被廣泛用於大量應用中。在操作一 LED期間，將一電壓施加於一能夠使電子弛緩為一較低能 態之p/n接面’因此發射光。藉由設計由不同材料製成的 p/n接面’有可能獲得在深紫外線至多紅外線之範圍内之 一特定色彩的光。 LED可為低電力消耗（亦即微毫等級），但led亦可經設 計以消耗更多電力，至多數瓦《此種LED通常係藉由「高 ❿ ；度」一詞表示。 高亮度LED由於眩光及光的均勻性問題，通常不用於直 • 接照明。此外’間接照明應用則有系統效率低的問題。而 且，由於需要散熱座，所以設計一薄型發光模組有其困 難。 美國專利US 7072096B藉由描述一具有一 LED光源陣列 之光學照明系統而解決對光學均勻性之需要，其LED光源 陣列之各LED區域係藉由反射側壁圍繞，該等反射側壁的 135701.doc 200936954 輸出係藉由升高稜鏡膜及偏光轉換膜而加以處理。所揭示 之照明系統的主要目的係提供一用於直接照明之小型且有 效的系統》 然而’膜的數目使該系統不適合於系統大小及厚度為兩 個主要條件之應用。而且，此等膜非常昂貴且製造期間的 處理步驟數目造成高生產成本。 【發明内容】 本發明之目的係提供一對該等以上技術及先前技術之改 良。更特定言之，本發明之目的係提供一薄且小型的發光 板。 以上目的係根據本發明之一第一態樣藉由一發光板而提 供，該發光板包括一具有一上表面及一下表面之層，該層 進一步包括複數個光源，及光學元件之一分配，各光學元 件形成一自该上表面朝該下表面延伸之凹槽。各凹槽包括 一配置於該上表面之平面中之開π，及—界卜圓形表面 & 刀，且各光學元件包括配置於該凹槽之該底部部 刀之該等光源之至少—者^根據本發明之該第―態樣之該 發光板係有利的，因為其提供一高效率薄板。 各凹槽之開口可界定一圓形表面，如此可簡化製程。 、各凹槽之開口可界定一矩形表面’其係有利的，因為各 光學組件提供一矩形光走开彡站。、* + ❿尤末^/狀。這在照明矩形場景時係有 利的’因此減少溢出。 藉由各凹槽之該底部部分ι - 刀界疋之表面可小於藉由各凹槽 之該開口所界定之表面，因 u此徒供—發散的照明輪廓。 135701.doc 200936954 該發光板可進一步包括一第二層，該第二層係配置為鄰 接於該層之該上表面，因而覆蓋該等凹槽之頂部區域。該 第二層可為透光性，其係有利的，因為該等光源係受保護 免遭外部破壞，而不會因該發光板之高效率發生惡化。 各光學元件之凹槽可自該上表面至該下表面而延伸穿過 該層，藉此減小該層之厚度。 各凹槽之該開口與該底部部分之間的距離可小於該層之 該上表面與該下表面之間的距離，因此在該層之該下表面 〇 與各凹槽之該底部部分之間形成一支撐部分。這係有利 的’因為該發光板可製造得更為堅固。 該層可製成一整體，如此可減少處理步驟的數目。 各光學元件可包括光學反射塗層，其係有利的，因為增 加了該發光板的效率。 該層係由金屬或聚合物材料製成。因此，可使用廉價的 及習知的材料》 B 各凹槽可包括一自該底部部分朝該開口延伸之封裝，因 *覆蓋該至少-光源。這係有利的，因為加強了各光學元 件之光學性能。 各光源可為一高亮度LED。因此，該發光板能以一高效 率方式提供向亮度。 根據本發明之一第二態樣，提供一用於照明一空間之照 明器具，該照明器具包括根據本發明之該第―態樣之至少 一發光板。本發明之該第—態樣之優點亦適用於本發明之 此第二態樣。 135701.doc 200936954 以上目的係根據本發明之—第三實施例藉由一種用於提 -發光板之方法而提供，該方法包括以下步驟：製造一 具有光學元件之—分配之層，各光學元件形成—自該層之 上表面朝該層之-下表面延伸之凹槽，該光學元件包括 -配置於該上表面之平面中之開。，及一界定一圓形表面 之底ΙΜ刀。該方法進一步包括以下步驟：配置複數個光 源，使得各光學元件包括該等光源之至少一者。本發明之 該第-態樣之優點亦適用於本發明之此第三態樣。 製造該層之步驟可包括射出成型或㈣，其係有利的， 因為使用已知的製程本身。 本發月之其他目的、特徵及優點將在以下詳細揭示、所 附的附屬申請專利範圍及圖式中顯而易見。 術18形」在本文中指的係任一簡單的（亦即本身非 交叉)、可辨的(亦即無明顯轉角及頂點)的二維封閉曲線形 狀。一圓形不需要為對稱。盛也 _ 是_。 相“，—矩形不應被認為 藉由各凹槽之該開π界定的表㈣指各_之該開口端 部之橫截面。相應地，藉由各凹槽之該底部部分界定之表 面係指各凹槽之該底部端部之橫載面。 應注意，「照明器具」一詞意味—裝置，其係用於提供 光於一空間中以達到照明該空間㈣物體之目的。 此上下文中的空間通常為一公寓房間或一辦公室、一體 育館、—公共場所中的空間或-室外環境的-部分，例如 街道的-部分。因I舉例而言，一照明器具非用 135701.doc 200936954 視或行動電話之一視訊投影機或背光源。 【實施方式】 現將參考所附示意圖，藉由實例來描述本發明之實施 例。 圖1顯示具有一層2之發光板1，該層2具有一上表面3及 一下表面5°該層2具有複數個光學元件1〇，各光學元件形 成一自該上表面3朝該下表面5延伸之凹槽12。各凹槽12具 有一在該上表面3之平面中之開口 14，及一底部部分16。 一 LED 7係安裝於各凹槽12之該底部部分16。 在圖2a及2b中，顯示該光學元件1〇之不同實施例。該底 部部分16係界定一圓形表面，該圓形表面具有一用於安裝 一 LED至其之構件（未顯示）。在圖2a中，該開口丨4係界定 一圓形表面，且在圖2b中，該開口 14係界定一矩形表面。 該光學元件10具有延伸在該底部部分16與該開口 14之間的 側壁17，因而界定該凹槽丨2。 參考圖1，該發光板丨之操作如下。各LED係連接至一用 於驅動該等LED之電源構件（未顯示），當將一電壓施加於 該LED時便會發光。光分配可為朗伯（iambertian)、編福翼 (bat-wing)、高斯（Gaussian^。光將入射在該等侧壁17上 且被反射，使得光自該開口 14向外射出。該光學元件丨〇於 是使所發射光之光分配成形。 該層2可由聚合材料、金屬或半導體材料製成。該等光 學元件1〇可為填A空氣之凹槽、一彳電材料塊 < 凹槽或一 填充以一封裝之凹槽。該等光學元件1〇可藉由一第二層2〇 I35701.doc -9- 200936954 覆蓋。該等側壁17可藉由一反射塗層或藉由全内反射而反 射光。在全内反射之情形下，該凹槽12之折射率及該層2 之折射率必須不同。 在圖3中，該第二層2〇係安裝於層2之頂部上。該第二層 2〇為透光性，以使自該等LED 7發射之光透射通過該第二 層20。該發光板1進一步包括一背板3〇〇該背板3〇為一印 刷電路板（PCB) ’但亦可用作一散熱器。 現參考圖4，該等光學元件1〇係自該層2之該上表面3朝 © 該下表面5延伸，保留該層2之一剩餘部分9以用作一支 撐。在此特定實施例中，該等光源7係顯示為LED封裝， 包含一透鏡8。該剩餘部分9可具有用於導引該等lED與一 電源構件（未顯示）之間之電性連接之結構（未顯示）。 在圖5中，該等光學元件1〇之該等側壁17係使用一光學 反射塗層例如鋁塗佈，以減少反射損失。 圖6顯示一發光板1，其具有一覆蓋該層2之該等光學元 件10之第二層20 »該第二層20係部分向下填充該等凹槽12 達一程度，其下的該凹槽12則填充以一封裝40〇該封裝4〇 及該第二層20可具有不同的折射率以提高該發光板丨之效 率。此外，該封裝40可包括用於散射所發射光之小粒子 (未顯示），以減少在直接觀察該發光板丨時所謂的熱點。 該發光板1可藉由提供具有複數個光學元件1〇之該層2而 加以製造》其次，LED 7係配置在各光學元件10中，且連 接至電性接線。作為一可選步驟，可配置封裝4〇及/或進 一步層20。提供該層2之步驟可藉由習知製程而予以執 135701.doc -10· 200936954 仃。在一層2係由聚合材料製成之情形下，該層2可藉由射 出成型而提供。因此，具有光學元件1〇之該層2係以一單 一步驟提供。該等側壁Π接著可使用一反射材料塗佈，或 該等凹槽12可填充以一封裝4〇。若金屬或半導體材料為較 佳’則提供該層2之步驟可藉由蝕刻執行。在一矽層2之情 形下，該蝕刻可使用KOH執行，其為一等向性處理程序。 在蝕刻後，該等凹槽12可使用一反射材料塗佈，或填充以 一封裝40。 參考所有前述實施例，該等光學元件1〇之大小取決於使 用LED晶粒或使用LED封裝作為光源7。在LED晶粒之情形 下’各凹槽12之該底部部分16之直徑可為2毫米，該開口 14之直徑可為3.3毫米，且該光學元件1〇之高度，亦即該 底部部分16與該開口 14之間的最短距離可為ι.7毫米。在 led封裝之情形下，各凹槽12之該底部部分16之直徑可為 6毫米，該開口 14之直徑可為1〇毫米，且該光學元件1〇之 兩度可為4.75毫米。然而’其他大小亦係可能的。 可組合多個發光板1以提供一較大表面的照明器具丨〇〇， 如圖7所示。在此照明器具100中，該等光學元件11〇係以 一二維分配配置。 在圖8中，四個照明器具100被安裝於一天花板2〇〇以在 室内提供一般照明。藉由改變該等光學元件1〇之形狀，可 控制該等照明器具之輸出光束角度。 以上參考一些實施例已大體描述了本發明。然而，如熟 習此項技術者已所瞭解’除以上所揭示之實施例外的其他 135701.doc -11 - 200936954 實施例在如所附申請專利範圍所界定之本發明之範圍内係 同樣有可能實施。 【圖式簡單說明】 圖1係根據本發明之一實施例之一發光板之一側視圖； 圖2a係根據一第一實施例之一光學元件之一透視圖； 圖2b係根據一第二實施例之一光學元件之一透視圖； 圖3係根據本發明之另一實施例之一發光板之一側視 圖； © 圖4係根據本發明之再一實施例之一發光板之一側視 圖； 圖5係根據本發明之另一實施例之一發光板之一側視 圖； 圖6係根據本發明之另一實施例之一發光板之一側視 圖； 圖7係根據本發明之一實施例之一照明器具之一透視 圍， 圖8係藉由根據本發明之照明器具照明之一室之侧視 圖。 【主要元件符號說明】 發光板 2 層 上表面 下表面BACKGROUND OF THE INVENTION 1. Field of the Invention This invention relates to a luminescent panel comprising a layer having an upper surface, a lower surface and a plurality of light sources. The illuminating panel further includes one of the optical elements, each optical element forming a recess extending from the upper surface toward the lower surface, wherein each optical component includes at least one of the light sources disposed at a bottom portion of the recess . The invention also relates to a method for providing such a luminescent panel. 〇 [Prior Art] Light-emitting diodes (LEDs) are widely used in a large number of applications. During operation of an LED, a voltage is applied to a p/n junction that can relax electrons into a lower energy state, thus emitting light. It is possible to obtain a specific color of light in the range of deep ultraviolet rays up to many infrared rays by designing a p/n junction made of different materials. LEDs can be low power consumption (ie, micro-level), but LEDs can also be designed to consume more power, to most tiles. Such LEDs are usually represented by the word "high ❿ ; degree". High-brightness LEDs are not normally used for direct illumination due to glare and uniformity of light. In addition, 'indirect lighting applications have problems with low system efficiency. Moreover, designing a thin type of light-emitting module is difficult because of the need for a heat sink. U.S. Patent No. 7,072,096 BB addresses the need for optical uniformity by describing an optical illumination system having an array of LED light sources, each of which is surrounded by reflective sidewalls, 135701.doc 200936954 The output is processed by raising the ruthenium film and the polarizing film. The primary purpose of the disclosed illumination system is to provide a small and efficient system for direct illumination. However, the number of membranes makes the system unsuitable for applications where system size and thickness are two primary conditions. Moreover, such films are very expensive and the number of processing steps during manufacturing results in high production costs. SUMMARY OF THE INVENTION An object of the present invention is to provide a pair of improvements in the above techniques and prior art. More specifically, it is an object of the present invention to provide a thin and compact luminescent panel. The above object is provided by a light-emitting panel according to a first aspect of the present invention, the light-emitting panel comprising a layer having an upper surface and a lower surface, the layer further comprising a plurality of light sources, and one of the optical elements is distributed, Each optical element forms a recess extending from the upper surface toward the lower surface. Each of the grooves includes an opening π disposed in a plane of the upper surface, and a circular surface & knife, and each optical element includes at least one of the light sources disposed on the bottom portion of the groove. The illuminating panel according to the first aspect of the invention is advantageous in that it provides a highly efficient sheet. The opening of each groove can define a rounded surface, which simplifies the process. The opening of each groove may define a rectangular surface' which is advantageous because each optical component provides a rectangular light exit station. , * + ❿ 末 end ^ / shape. This is advantageous when lighting a rectangular scene' thus reducing spillage. By the bottom portion of each groove, the surface of the knife edge can be smaller than the surface defined by the opening of each groove, because the illumination profile of the divergence is provided. 135701.doc 200936954 The illuminating panel can further include a second layer configured to abut the upper surface of the layer to cover the top region of the grooves. The second layer may be light transmissive, which is advantageous because the light sources are protected from external damage and do not deteriorate due to the high efficiency of the luminescent panel. The grooves of each of the optical elements may extend through the layer from the upper surface to the lower surface, thereby reducing the thickness of the layer. The distance between the opening of the groove and the bottom portion may be less than the distance between the upper surface and the lower surface of the layer, thus between the lower surface of the layer and the bottom portion of each groove A support portion is formed. This is advantageous because the luminescent panel can be made more robust. This layer can be made in one piece, thus reducing the number of processing steps. Each optical component can include an optically reflective coating which is advantageous because of the increased efficiency of the luminescent panel. This layer is made of a metal or polymer material. Thus, inexpensive and conventional materials can be used. B Each groove can include a package extending from the bottom portion toward the opening, as the at least - light source is covered. This is advantageous because the optical properties of the optical components are enhanced. Each light source can be a high brightness LED. Therefore, the illuminating panel can provide the brightness to an efficient manner. According to a second aspect of the present invention, there is provided a lighting fixture for illuminating a space, the lighting fixture comprising at least one illuminating panel according to the first aspect of the invention. The advantages of this aspect of the invention are also applicable to this second aspect of the invention. 135701.doc 200936954 The above object is provided by a method for a illuminating panel according to the third embodiment of the invention, the method comprising the steps of: manufacturing a layer having an optical component - a distribution layer, each optical component Forming a groove extending from a surface above the layer toward a lower surface of the layer, the optical element comprising - disposed in a plane of the upper surface. And a bottom boring tool defining a circular surface. The method further includes the step of configuring a plurality of light sources such that each optical element includes at least one of the light sources. The advantages of this first aspect of the invention are also applicable to this third aspect of the invention. The step of making the layer may include injection molding or (d), which is advantageous because the known process itself is used. Other objects, features, and advantages of the present invention will be apparent from the description and appended claims. The term "18" as used herein refers to any two-dimensional closed curve shape that is simple (i.e., non-intersecting itself), discernible (i.e., without significant corners and vertices). A circle does not need to be symmetrical. Sheng also _ is _. The phase ", - the rectangle should not be considered to be defined by the opening π of each groove (4) refers to the cross section of the open end of each _. Accordingly, the surface system defined by the bottom portion of each groove Refers to the cross-sectional surface of the bottom end of each groove. It should be noted that the term "lighting device" means a device for providing light in a space for the purpose of illuminating the space (4) object. The space in this context is typically an apartment room or an office, an integrated facility, a space in a public space, or a part of an outdoor environment, such as a street-part. For example, in the case of I, a lighting fixture is not used. One of the 135701.doc 200936954 video or mobile phones is a video projector or backlight. [Embodiment] Embodiments of the present invention will now be described by way of examples with reference to the accompanying drawings. 1 shows a luminescent panel 1 having a layer 2 having an upper surface 3 and a lower surface 5°. The layer 2 has a plurality of optical elements 1 〇, each optical element forming a surface from the upper surface 3 toward the lower surface 5 Extending the groove 12. Each groove 12 has an opening 14 in the plane of the upper surface 3 and a bottom portion 16. An LED 7 is mounted to the bottom portion 16 of each of the recesses 12. In Figures 2a and 2b, different embodiments of the optical component 1 are shown. The bottom portion 16 defines a circular surface having a member (not shown) for mounting an LED thereto. In Figure 2a, the opening 系 4 defines a circular surface, and in Figure 2b, the opening 14 defines a rectangular surface. The optical element 10 has a side wall 17 extending between the bottom portion 16 and the opening 14, thus defining the recess 丨2. Referring to Figure 1, the operation of the luminescent panel is as follows. Each LED is coupled to a power supply member (not shown) for driving the LEDs to emit light when a voltage is applied to the LED. The light distribution can be iambertian, bat-wing, Gaussian^. Light will be incident on the side walls 17 and reflected such that light exits the opening 14. The element then distributes the light of the emitted light. The layer 2 can be made of a polymeric material, a metal or a semiconductor material. The optical elements 1 can be filled with A-air grooves, a block of electrical material < concave a groove or a recess filled with a package. The optical elements 1 覆盖 can be covered by a second layer 2 〇 I35701.doc -9- 200936954. The side walls 17 can be covered by a reflective coating or by Internal reflection reflects light. In the case of total internal reflection, the refractive index of the groove 12 and the refractive index of the layer 2 must be different. In Fig. 3, the second layer 2 is mounted on the top of the layer 2. The second layer 2 is light transmissive to transmit light emitted from the LEDs 7 through the second layer 20. The illuminating panel 1 further includes a backing plate 3, the backing plate 3 is a printing Circuit board (PCB) 'but can also be used as a heat sink. Referring now to Figure 4, the optical elements 1 are from the top of the layer 2 The face 3 extends toward the lower surface 5, leaving a remaining portion 9 of the layer 2 to serve as a support. In this particular embodiment, the light sources 7 are shown as LED packages comprising a lens 8. The remainder 9 may have a structure (not shown) for guiding electrical connections between the lEDs and a power source component (not shown). In Figure 5, the side walls 17 of the optical components 1 are used. An optically reflective coating such as aluminum is applied to reduce reflection losses. Figure 6 shows a luminescent panel 1 having a second layer 20 of the optical elements 10 covering the layer 2 » the second layer 20 is partially down The recesses 12 are filled to a degree, and the recess 12 underneath is filled with a package 40 〇 and the second layer 20 can have different refractive indices to improve the efficiency of the luminescent panel. The package 40 can include small particles (not shown) for scattering the emitted light to reduce so-called hot spots when directly viewing the luminescent plate. The illuminating plate 1 can be provided by having a plurality of optical elements This layer 2 is manufactured. Secondly, the LED 7 is disposed in each optical element 10 And connected to the electrical wiring. As an optional step, the package 4 and/or further layer 20 can be configured. The step of providing the layer 2 can be performed by a conventional process 135701.doc -10.200936954. In the case where the layer 2 is made of a polymeric material, the layer 2 can be provided by injection molding. Thus, the layer 2 having the optical element 1 is provided in a single step. The side walls can then be used. The reflective material is coated, or the recesses 12 can be filled in a package. If the metal or semiconductor material is preferred, the step of providing the layer 2 can be performed by etching. In the case of a layer 2, This etching can be performed using KOH, which is an isotropic process. After etching, the grooves 12 can be coated with a reflective material or filled with a package 40. Referring to all of the foregoing embodiments, the size of the optical elements 1 depends on the use of LED dies or the use of LED packages as the light source 7. In the case of LED dies, the bottom portion 16 of each groove 12 may have a diameter of 2 mm, the opening 14 may have a diameter of 3.3 mm, and the height of the optical element 1 ,, that is, the bottom portion 16 The shortest distance between the openings 14 can be ι.7 mm. In the case of a led package, the bottom portion 16 of each recess 12 may have a diameter of 6 mm, the opening 14 may have a diameter of 1 mm, and the optical element may have a thickness of 4.75 mm. However, other sizes are also possible. A plurality of illuminating panels 1 can be combined to provide a larger surface illuminator, as shown in FIG. In this luminaire 100, the optical elements 11 are arranged in a two-dimensional distribution. In Fig. 8, four lighting fixtures 100 are mounted to a ceiling 2 to provide general illumination indoors. By varying the shape of the optical elements, the output beam angle of the lighting fixtures can be controlled. The invention has been generally described above with reference to a few embodiments. However, as is well known to those skilled in the art, other 135701.doc -11 - 200936954 embodiments other than the ones disclosed above are equally possible to implement within the scope of the invention as defined by the appended claims. . BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a side view of a light-emitting panel according to an embodiment of the present invention; FIG. 2a is a perspective view of an optical component according to a first embodiment; FIG. 2b is a second 1 is a perspective view of one of the illuminating plates according to another embodiment of the present invention; FIG. 4 is a side view of one of the illuminating plates according to still another embodiment of the present invention. Figure 5 is a side view of a luminescent panel according to another embodiment of the present invention; Figure 6 is a side view of a luminescent panel according to another embodiment of the present invention; Figure 7 is a view of one of the present invention One of the lighting fixtures of the embodiment is seen through a perspective view, and Fig. 8 is a side view of a chamber illuminated by the lighting fixture according to the invention. [Explanation of main component symbols] Illumination plate 2 layers Upper surface Lower surface
7 LED 135701.doc •12· 200936954 8 9 10 12 14 16 17 20 〇 30 40 100 110 200 透鏡 剩餘部分 光學元件 凹槽 開口 底部部分 側壁 第二層 背板 封裝 照明器具 光學元件 天花板 135701.doc •13·7 LED 135701.doc •12· 200936954 8 9 10 12 14 16 17 20 〇30 40 100 110 200 Lens Remaining Optics Groove Opening Bottom Part Sidewall Second Layer Backplane Package Lighting Optics Ceiling 135701.doc •13 ·