200826317 九、發明說明： 【發明所屬之技術領域】 尤其是一種具有可變焦能 本發明涉及一種發光元件 力的發光二極體。 【先别技術】 目前手持攜帶型電子裝置，如移動 位助理〜_alDigitalAssistant，PDA)w^^= 攝，裝置逐漸成爲其標準配備的元件，惟在“足， f中，這些攜帶型電子褒置中的攝像裝置則會因爲 通而無法發揮拍攝功能或拍攝效果不理想。因此，爲解決 光線問題，現行的手段是在攜帶型電子裝置的攝像裝置中 加入補光燈，該補光燈—般制的是高逃度發光二極體。 惟，-般的發光二極體是由透明環氧樹脂封裝發光晶 片而形成’因此該發光二極體的焦距固定不變，僅可用於 固定距離内的人和物體的照明。 【發明内容】 有鑒於此，有必要提供一種具有可變焦能力的發光二 極體。 種發光一極體，包括一個基底、至少一個位於基底 上的發光晶片、一個工作電路及一個液體透鏡組。該液體 透鏡組位於發光晶片出光光路中，該液體透鏡組包括一個 上液體透鏡及一個下液體透鏡，該上液體透鏡與該下液體 透鏡接觸形成一個接觸面，該工作電路使該接觸面發生形 狀改變而使該液體透鏡組實現變焦。 6 200826317 一種發光二極體，包括一個基底，至少一個位於基底 •上的發光晶片，一個位於發光晶片出光光路中的液體透鏡 -組。該液體透鏡組包括一個上液體透鏡及一個下液體透 鏡，該上液體透鏡與該下液體透鏡接觸形成一個接觸面， 該接觸面可在力的作用下發生形狀改變而使該液體透鏡組 變焦。 所述的發光二極體，通過工作電路使上液體透鏡與下 ，液體透鏡之間的接觸面發生形狀改變從而實現液體透鏡組 具有可變焦的能力。 所述的發光二極體，在力的作用下，上液體透鏡與下 液體透鏡之間的接觸面發生形狀改變從而實現液體透鏡組 具有可變焦的能力。 【實施方式】 下面將結合附圖對本發明實施例作進一步的詳細說 明。 I 請參閱圖1，本發明實施例提供一種發光二極體1〇。 該發光二極體10包括一個基底1〇2、一個發光晶片1〇4、 一個封裝體106、一個液體透鏡組1〇8及一個工作電路。 該封裝體106包括多個側壁136、138及上、下兩個透 明的玻璃板140。該發光二極體1〇的基底1〇2可由散熱性 忐良好的材料製成，如鋁，鋁合金，銅或銅合金，用於承 載發光晶片104並爲發光晶片1〇4提供良好的散熱效果。 該發光晶片104可選自紅光發光晶片、綠光發光晶片和藍 光發光晶片的任一個。在液體透鏡組1〇8及發光晶片 200826317 間可加入摻雜有匹配螢光粉的透明樹脂（圖未示）以使該 發光一極體10發出白光。例如，若該發光晶片1〇4是藍光 發光晶片，則加入的螢光粉爲紅綠混合螢光粉，藍光發光 晶片發出的藍光激發紅綠混合螢光粉，使螢光粉產生紅光 及綠光，再與原來藍光發光晶片發出的藍光混合以產生白 光。該發光晶片104可藉由兩個穿過基底1〇2並與基底1〇2 絕緣接觸的電極引線112與外電源（圖未示）接通。 而要私出的疋，該發光二極體10也可將紅光發光晶 片、綠光發光晶片及藍光發光晶片同時設置於基底上而形 成多色彩光源。 該液體透鏡組108位於發光晶片 、 -------丄 ® 7U 吩丫 ，钱 液體透鏡組108的厚度大於〇毫#，小於等於10毫米。該 液體透鏡組108包括一個上液體透鏡114及—個下液體透 鏡116,該上液體透鏡114與液體透鏡116接觸形成一個 接觸面200。該上液體透鏡114是由可變形的第一透明封 裝體118及密封在第—透明封裝體118内的第—液體12〇 該下液體透鏡116是由可變形的第二透明封裝體122 7封在第二透明封裝體122内的第二液體124組成。該 明封裝體118及第二透明封裝體122可由相同的或 膠薄膜=製成。該材料選用透光且高延展性的塑膠或橡 第薄=材料。在本實施例中，該第一液體12〇是水，該 第一液體124是光學匹配油。 該工作電路使上液體透鏡114與下液 接觸面_發生形狀改變而使該液體透鏡組=== 200826317 焦。該工作電路分別包括上環狀電極126、中環狀電極 128，下環狀電極130、一個變焦開關132及一個正向電壓 •源 134 〇 該下、中、上環狀電極126、128、130可以是透明的 氧化銦錫（ITO)電極或金屬電極。在發光晶片104的出 光光路中，該下、中、上環狀電極126、128、130分別依 次排列，而上、下環狀電極126、130分別固定在液體透鏡 組108的兩端且上環狀電極126與上液體透鏡114的外緣 相抵觸，下環狀電極130與下液體透鏡116的外緣相抵觸。 該中環狀電極128是位於上液體透鏡114及下液體透鏡 116之間且可向上液體透鏡114方向或下液體透鏡116方 向移動的。當然，實現中環狀電極128的移動可藉由先前 技術中的各種手段，如在封裝體106侧壁138内設置滑道 (圖未示），將環狀電極128外緣設置於滑道内等實現。該 中環狀電極128藉由導線接地。 該變焦開關132設有二個檔位A、B，當變焦開關撥 到檔位元A時，可將上環狀電極126與正向電壓源134接 通；當變焦開關撥到檔位元B時，可將下環狀電極130與 正向電壓源134接通。 以下說明本實施例提供的具有變焦能力的發光二極體 10的工作原理。請參閱圖1，當變焦開關132撥到A，上 環狀電極126與正向電壓源134接通，使上環狀電極126 處於高電位，而接地的中環狀電極128處於低電位，此時 中環狀電極128受到上環狀電極126的靜電力所吸引，所 200826317 以中環狀電極128會向上環狀電極126方向移動。因此， Μ立於上環狀電極126與中環狀電極128之間的上液體透鏡 -114被壓縮而出現形變，因此，該上液體透鏡114與下液 體透鏡116間的接觸面200爲一個向發光晶片104出光方 向凸出的形狀。 請參閱圖2，當變焦開關132撥到檔位元Β時，下環 狀電極130與正向電壓源134接通，使下環狀電極130處 於高電位，而接地的中環狀電極128處於低電位，此時中 環狀電極128受到下環狀電極130的靜電力所吸引，所以 中環狀電極128會向下環狀電極130方向移動。因此，位 於下環狀電極130與中環狀電極128之間的下液體透鏡 116被壓縮而出現形變，此時該上液體透鏡114與下液體 透鏡116間的接觸面200發生形狀改變，變爲一傭較平坦 的形狀。接觸面200形狀的改變使該液體透鏡組108焦距 改變。 請參閱圖3,本發明第二實施例還提供的一種發光二 極體20，其與第一實施例提供的發光二極體不同之處在 於，該第一液體218是固定折射率的光學匹配油，該第二 液體230是水。 本發明實施例提供的發光二極體10,藉由工作電路中 檔位元A、Β的選擇使上液體透鏡114與下液體透鏡116 間的接觸面200發生形狀改變從而實現液體透鏡組108具 有可變焦的能力。 綜上所述，本發明確已符合發明專利之要件，爰依法 200826317 ，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，舉凡熟習本 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】 圖1爲本發明第一實施例提供的發光二極體處於第一 種狀態的截面示意圖。 、 圖2爲本發明第一實施例提供的發光二極體處於第二 種狀態的截面示意圖。 圖3爲本發明第二實施例提供的一種發光二極體的一 個截面示意圖。 【主要元件符號說明】 發光二極體 10，20 基底 102 發光晶片 104 封裝體 106 液體透鏡組 108 側壁 136 ， 138 玻璃板 140 電極引線 112 上液體透鏡 114 下液體透鏡 116 第一透明封裝體 118 第一液體 120 ， 218 第二透明封裝體 122 第二液體 124 ， 230 接觸面 200 上環狀電極 126 中環狀電極 128 下環狀電極 130 變焦開關 132 正向電壓源 134 11200826317 IX. Description of the Invention: [Technical Field] The invention relates to a light-emitting diode of a light-emitting element. [First-hand technology] At present, handheld electronic devices, such as mobile assistants _alDigitalAssistant, PDA) w^^=, the device has gradually become its standard components, but in the "foot, f, these portable electronic devices In the case of the camera device, the camera function cannot be used or the shooting effect is not satisfactory. Therefore, in order to solve the light problem, the current method is to add a fill light to the camera device of the portable electronic device. The high-emission light-emitting diode is made. However, the general-purpose light-emitting diode is formed by a transparent epoxy-encapsulated light-emitting chip. Therefore, the focal length of the light-emitting diode is fixed and can only be used in a fixed distance. In view of the above, it is necessary to provide a light-emitting diode having zoom capability. The light-emitting body includes a substrate, at least one light-emitting chip on the substrate, and a work. a circuit and a liquid lens group, the liquid lens group being located in the light path of the light emitting chip, the liquid lens group including an upper liquid lens and a liquid liquid a body lens, the upper liquid lens is in contact with the lower liquid lens to form a contact surface, and the working circuit causes a shape change of the contact surface to achieve zooming of the liquid lens group. 6 200826317 A light emitting diode comprising a substrate, at least a light-emitting wafer on the substrate, a liquid lens group in the light path of the light-emitting chip, the liquid lens group including an upper liquid lens and a lower liquid lens, the upper liquid lens contacting the lower liquid lens to form a contact The contact surface can be shaped by a force to zoom the liquid lens group. The light-emitting diode has a shape change between the upper liquid lens and the lower liquid lens through the working circuit. Thereby, the liquid lens group has the capability of zooming. The light-emitting diode has a shape change between the contact surface between the upper liquid lens and the lower liquid lens under the force, thereby realizing the ability of the liquid lens group to have zoomability. [Embodiment] Hereinafter, embodiments of the present invention will be further described in detail with reference to the accompanying drawings. I. Embodiment 1 of the present invention provides a light emitting diode 1 . The light emitting diode 10 includes a substrate 1 , 2 , a light emitting wafer 1 , 4 , a package 106 , and a liquid lens group. The package body 106 includes a plurality of side walls 136, 138 and two upper and lower transparent glass plates 140. The substrate 1〇2 of the light-emitting diode 1 can be made of a material having good heat dissipation properties. Formed, such as aluminum, aluminum alloy, copper or copper alloy, for carrying the light-emitting wafer 104 and providing a good heat dissipation effect for the light-emitting wafer 1 . 4. The light-emitting wafer 104 may be selected from a red light-emitting chip, a green light-emitting chip, and Any one of the blue light-emitting chips may be added with a transparent resin (not shown) doped with matching phosphor powder between the liquid lens group 1 8 and the light-emitting chip 200826317 to cause the light-emitting body 10 to emit white light. For example, if the illuminating wafer 1 〇 4 is a blue illuminating wafer, the added fluorescing powder is a red-green mixed fluorescent powder, and the blue light emitted by the blue illuminating wafer excites the red-green mixed fluorescent powder to cause the fluorescent powder to generate red light and The green light is then mixed with the blue light emitted by the original blue light emitting chip to produce white light. The illuminating wafer 104 can be connected to an external power source (not shown) by two electrode leads 112 that pass through the substrate 1 〇 2 and are in insulative contact with the substrate 1 〇 2 . In addition, the light-emitting diode 10 can also simultaneously mount a red light-emitting crystal chip, a green light-emitting chip, and a blue light-emitting chip on a substrate to form a multi-color light source. The liquid lens group 108 is located on the illuminating wafer, ------- 丄 ® 7U, and the thickness of the liquid liquid lens group 108 is greater than 〇 milli#, less than or equal to 10 mm. The liquid lens assembly 108 includes an upper liquid lens 114 and a lower liquid lens 116 that is in contact with the liquid lens 116 to form a contact surface 200. The upper liquid lens 114 is a deformable first transparent package 118 and a first liquid 12 sealed in the first transparent package 118. The lower liquid lens 116 is sealed by a deformable second transparent package 122. The second liquid 124 is formed in the second transparent package 122. The package 118 and the second transparent package 122 can be made of the same or film. The material is made of light-transmissive and highly malleable plastic or rubber thin = material. In the present embodiment, the first liquid 12 is water and the first liquid 124 is an optically matching oil. The working circuit causes the upper liquid lens 114 and the lower liquid contact surface to undergo a shape change so that the liquid lens group === 200826317 coke. The working circuit includes an upper ring electrode 126, a middle ring electrode 128, a lower ring electrode 130, a zoom switch 132, and a forward voltage source 134, the lower, middle and upper ring electrodes 126, 128, 130. It may be a transparent indium tin oxide (ITO) electrode or a metal electrode. In the light path of the light-emitting wafer 104, the lower, middle and upper ring electrodes 126, 128, 130 are sequentially arranged, and the upper and lower ring electrodes 126, 130 are respectively fixed at both ends of the liquid lens group 108 and the upper ring The electrode 126 is in contact with the outer edge of the upper liquid lens 114, and the lower ring electrode 130 is in contact with the outer edge of the lower liquid lens 116. The center annular electrode 128 is located between the upper liquid lens 114 and the lower liquid lens 116 and is movable in the direction of the liquid lens 114 or the lower liquid lens 116. Of course, the movement of the ring-shaped electrode 128 can be achieved by various means in the prior art, such as providing a slide (not shown) in the sidewall 138 of the package 106, and arranging the outer edge of the annular electrode 128 in the slide. achieve. The center ring electrode 128 is grounded by a wire. The zoom switch 132 is provided with two gear positions A, B. When the zoom switch is turned to the gear position A, the upper ring electrode 126 can be connected to the forward voltage source 134; when the zoom switch is turned to the gear position B At that time, the lower ring electrode 130 can be connected to the forward voltage source 134. The operation of the light-emitting diode 10 having the zooming capability provided by the present embodiment will be described below. Referring to FIG. 1, when the zoom switch 132 is turned to A, the upper ring electrode 126 is turned on with the forward voltage source 134, so that the upper ring electrode 126 is at a high potential, and the grounded center ring electrode 128 is at a low potential. In the middle, the ring-shaped electrode 128 is attracted by the electrostatic force of the upper ring-shaped electrode 126, and in 200826317, the middle ring-shaped electrode 128 moves in the direction of the upward ring-shaped electrode 126. Therefore, the upper liquid lens - 114 standing between the upper annular electrode 126 and the middle annular electrode 128 is compressed to be deformed. Therefore, the contact surface 200 between the upper liquid lens 114 and the lower liquid lens 116 is a direction. The light-emitting wafer 104 has a shape in which the light-emitting direction is convex. Referring to FIG. 2, when the zoom switch 132 is turned to the gear position, the lower ring electrode 130 is turned on with the forward voltage source 134, so that the lower ring electrode 130 is at a high potential, and the grounded center ring electrode 128 is at At a low potential, the middle ring electrode 128 is attracted by the electrostatic force of the lower ring electrode 130, so that the middle ring electrode 128 moves in the downward direction of the ring electrode 130. Therefore, the lower liquid lens 116 located between the lower ring electrode 130 and the middle ring electrode 128 is compressed to be deformed, and the contact surface 200 between the upper liquid lens 114 and the lower liquid lens 116 is changed in shape and becomes A servant has a flatter shape. The change in shape of the contact surface 200 causes the focal length of the liquid lens group 108 to change. Referring to FIG. 3, a second embodiment of the present invention further provides a light emitting diode 20 which is different from the light emitting diode provided in the first embodiment in that the first liquid 218 is an optical matching of a fixed refractive index. The oil, the second liquid 230 is water. The light-emitting diode 10 provided by the embodiment of the present invention changes the contact surface 200 between the upper liquid lens 114 and the lower liquid lens 116 by the selection of the gear positions A and Β in the working circuit to realize the liquid lens group 108. The ability to zoom. In summary, the present invention has indeed met the requirements of the invention patent, and has filed a patent application according to law 200826317. However, the above description is only a preferred embodiment of the present invention, and the scope of the present invention is not limited to the above-described embodiments, and those skilled in the art will be able to make equivalent modifications or variations in accordance with the spirit of the present invention. It should be covered by the following patent application. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a schematic cross-sectional view showing a state in which a light-emitting diode according to a first embodiment of the present invention is in a first state. 2 is a schematic cross-sectional view showing the light emitting diode according to the first embodiment of the present invention in a second state. FIG. 3 is a schematic cross-sectional view showing a light emitting diode according to a second embodiment of the present invention. [Main component symbol description] Light-emitting diode 10, 20 substrate 102 Light-emitting chip 104 Package 106 Liquid lens group 108 Side wall 136, 138 Glass plate 140 Electrode lead 112 Upper liquid lens 114 Lower liquid lens 116 First transparent package 118 a liquid 120, 218 second transparent package 122 second liquid 124, 230 contact surface 200 upper ring electrode 126 middle ring electrode 128 lower ring electrode 130 zoom switch 132 forward voltage source 134 11