201233196201233196
、發明說明： 發明所屬之技術領域 】 本發明係涉及一種壓電平面喇D八；特別是指一種使 多數雙模態壓電片所組成的壓電致動器，令其固定於框 上以堪動振動發生膜片發聲，進而透過雙模態壓電片驅 電壓極性調整振動發生膜片共振現象，使其能夠產生兼 寬音域與高音壓的聲音，達到較佳平面喇D八產品應用之 新設計者。 •【先前技術】 按’物體產生音頻的振動為聲音產生的基礎，一般 括有通電產生振動的致動器與驅動空氣振動輸出聲音的 動發生獏片兩部份。隨著電子產品輕薄化發展趨勢，喇 也逐漸走向薄型化，平面喇B八的需求隨著電子產品市場 快速增加。傳統的喇叭係以動圈式為主，由於受限於磁 ^路的漏磁’以致動圈式喇叭對薄型化產品無法滿足， 鲁如:確保音樂的音質，又能兼具足夠薄度以利内建到電 產品中，遂成為新喇。八產品的技術發展重點。 上電喇叭係使用壓電片作為致動器，經由黏結致動 μ金屬片’將致動器的振動模態轉換成彎曲模態以驅 ::產生聲音。壓電喇叭本質上為兩個片狀的材料緊密 :^成’薄型化為其重要特徵’對現在電子產品需求 屬w :有相對的應用優勢。壓電喇叭使用剛性較高的 為振動發生膜片’不利於低音域的聲音產生，因 專錢用！電作m會有高音化的問題存在。除薄型 用 架 動 具 創 包 振 。八 而 場 故 子 器 動 接 之 金 此 化 201233196 、 、-' • ·:'之訴求外，低音域改善與寬頻化，其實是後續壓電喇。八技 術發展的重要技術課題。 就相關先前技術資料而言，透過振動發生膜片的設計 將金屬貼合於低剛性高分子膜上之既有技術如專利JP32071 99、JP3143198所揭、或是黏彈性體的使用如專利JP20002013 99所揭、或是低剛性振動發生膜片配合中央支撐結構如專 利JP2228199 、JP2033300所揭，其雖可改善低音域之響應， 然總厚度增加使音質仍偏向高音域，且其音壓也會隨著振 φ 動發生膜片材料剛性降低而降低；另外，藉由金屬間夾入 可吸收高音的材料以形成多層結構振動發生膜片之既有技 術如專利W02007136162所揭，該案雖可善低音域部份，然其 結構仍太過複雜而致使成本偏高。另如專利JP200217195、J Ρ2005295339所揭，其係揭露了一種使用彈性支撐方式以增加 振動發生膜片低音域振動，同時改善導線對振動發生膜片 壓應力之既有技術，然該二案結構的複雜度仍偏高而不利 於產品成本之降低；另如專利JP3175800所揭，其係揭露了 • 一種橢圓形致動器與振動發生膜片結構配合高分子振動發 生膜片使用之既有技術，其雖可獲得低音域響應延伸效果 ，然製作困難度卻偏高。另外，專利JP7203591 、JP2551813 、US6831985 、JP2000333295所揭，具特殊外形之非平面振動 發生膜片以提高振動發生膜片等效面積之既有技術，以及 專利JP8088898 、JP2007194789所揭以非平面壓電複材為致動 器之既有技術，雖均可改善低音域的聲音響應，但皆存在 結構製作複雜與音壓降低之問題。 在寬頻化需求條件下，喇D八的音頻響應有較寬的範圍 4 201233196BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a piezoelectric plane D8; in particular, a piezoelectric actuator composed of a plurality of bimodal piezoelectric sheets, which is fixed to a frame. The vibration of the diaphragm occurs, and the resonance phenomenon of the vibration is generated by the polarity of the bimodal piezoelectric film drive, so that the sound of the wide range and the high sound pressure can be generated, and the application of the flat surface is better. New designer. • [Prior Art] The vibration generated by the object's audio is the basis of the sound generation. It generally consists of an actuator that energizes to generate vibration and a motion-generating diaphragm that drives the air to vibrate the output sound. With the development trend of thin and light electronic products, La has gradually become thinner, and the demand for flat La B8 has increased rapidly with the electronic product market. The traditional horn is mainly a moving coil type. Due to the magnetic flux leakage limited by the magnetic circuit, the moving horn can not satisfy the thin product. Lu Ru: to ensure the sound quality of the music, and to have sufficient thinness Li Nei built into the electric products, and became a new La. The technical development focus of the eight products. The power-up horn uses a piezoelectric piece as an actuator to actuate the vibrating mode of the actuator into a bending mode to drive the sound through the bond. Piezoelectric horns are essentially two sheets of material that are tight: ^ is 'thinned as an important feature'. The demand for current electronic products is w: there are relative application advantages. Piezoelectric horns use a high-rigidity vibration-producing diaphragm' which is not conducive to the sound of the low-range field, because the money is used! There is a problem that the m is high. In addition to the thin type, the frame is used to create a vibration. Eight and the field of the machine to connect to the gold of this 201233196, , - ' • ·: ' appeal, the low-range improvement and broadband, in fact, is the subsequent piezoelectric. An important technical issue in the development of eight technologies. For the related prior art data, the prior art is applied to the low-rigidity polymer film by the design of the vibration generating film, such as the patent JP32071 99, JP 3143198, or the use of a viscoelastic body such as the patent JP20002013 99. The disclosed or low-rigidity vibration generating diaphragm is combined with the central supporting structure as disclosed in JP2228199 and JP2033300, which can improve the response of the low range, and the total thickness increases the sound quality to a high range, and the sound pressure also follows The vibration of the diaphragm material is reduced and the rigidity of the diaphragm material is lowered. In addition, the prior art is formed by sandwiching a material capable of absorbing high-pitched materials between the metals to form a multilayer structure vibration generating film, as disclosed in the patent WO2007136162. The sound field part, but its structure is still too complicated and the cost is high. In addition, as disclosed in the patents JP200217195 and J Ρ2005295339, it discloses a technique for using an elastic support method to increase the vibration of the diaphragm in the low-range vibration, and at the same time to improve the compressive stress of the diaphragm on the vibration of the diaphragm. The complexity is still high, which is not conducive to the reduction of product cost. Another example is disclosed in the patent JP3175800, which discloses that an elliptical actuator and a vibration generating diaphragm structure cooperate with the existing technology of the polymer vibration generating diaphragm. Although it can obtain the low-range response extension effect, the difficulty of production is high. In addition, patents JP7203591, JP2551813, US6831985, and JP2000333295 disclose a non-planar vibration generating film having a special shape to improve the vibration-generating film equivalent area, and a non-planar piezoelectric complex disclosed in JP8088898 and JP2007194789. The material is an existing technology of the actuator, and although the sound response of the low range is improved, there are problems in that the structure is complicated to manufacture and the sound pressure is lowered. Under the condition of wide frequency demand, the audio response of La D eight has a wide range 4 201233196
， 各 頻 率 的 音 壓 也須 維 持 在 足 夠 相 近 之 狀 態 以 音 起 伏 過 大 〇 對 使用 南 分 子 振 動 發 生 m 片 改 善 低 用 對 音 域 的 響應 相 對 較 弱 » 如 專 利 JP3082299 分 子 中 添 加 南 剛性 粒 子 5 以 改 善 音 域 響 應 不 5 或 如 專 利 JP8084396 所 揭 係 使 用 具 多 孔 結 構 的 以 降 低 金 屬 片 剛 性進 而 提 音 壓 5 Pk 這 類 使 用 類 料 製 作 振 動 發 生 膜片 的 習 知 壓 電 喇 口八 5 均 仍 存 在 之 現 象 與 缺 撼 0 另 如 專 利 JP2001285994 % US2010158283 所 揭 係 吸 收 振 動 的 衰 減 材料（damper) > 以 將 共 振 產 生 的 較 制 y 降 低 振 動 發 生膜 片 的 諧 振 現 象 以 達 到 寬 頻 化 缺 其 類 似 多 層 結 構之 設 計 仍 存 在 複 雜 性 的 問 題 利 JP2279000 、 JP3139999 US5828768 JP3589873 > 94 等 所 揭 5 係 配 合電 子 產 品 既 有 腔 體 » 直 接 將 壓 結 合 於 其 中 的 容 器壁 上 ， 透 過 腔 體 的 音 箱 作 用 以 的 不 足 > 缺 由 於 容器 壁 較 厚 其 產 生 的 振 動 幅 度 此 輸 出 的 音 壓 相 對偏 低 〇 綜 合 上 述 習 知技 術 如 何 以 更 簡 單 的 結 構 製 低 音 域 響 應 與 寬 音域 頻 見 之 壓 電 平 面· 0刺 口八 1 實 為 電 平 面 制 口八 未 來 之發 展 重 點 0 有 鑑 於 此 發明 人 本 於 多 年 從 事 相 關 產 品 之 與 設 計 經 驗 針 對上 述 之 § 標 5 詳 加 設 計 與 審 慎 終 得 確 具 實 用 性之 本 發 明 0 避免高低 音域的作 所揭係在 足的問題 金屬片， 似複合材 頻寬不足 使用具有 大振幅抑 的效果， 。又如專 JP20031020 電致動器 補償頻寬 受限，因 作出具有 低成本壓 製造開發 評估後， 【發明内容】 201233196 • . « V * -· 本發月之主要目的’係在提供一種具有多數雙模態壓 電片之壓電平面喇八’其所欲解決之問題點’係針對如何 研發出種更具理想貫用性之新式壓電平面喇叭為目標加 以思索突破； 本發明解決問題之技術特點，主要在於該壓電平面喇 匕括 框架’设成—框圍型態而包括數個側架部以及 形成於該等側架部中央之一透空狀組設空間；壓電致動器 組叹定位於該框架之其中相對二側架部’各該壓電致動 •器包括間隔配置型態之多數個雙模態壓電片所構成；一振 動發生膜片’設於該框架之透空狀組設空間中，該振動發 生膜片之其中相對二側結合固定於該壓電致動器之雙模態 壓電片’該振動發生膜片之另其中相對二側與框架之間則 呈間隔關係；藉此創新獨特設計，使本發明對照先前技術 而言，大致可達到如下優點： — 能夠利用該多數雙模態壓電片所構成之壓電致動器固 定於振動發生膜片兩側，透過雙模態壓電片的高變形量使 Φ振動發生膜片產生高音壓的聲音；壓電致動器中的雙模態 壓電片可被驅動電路單獨驅動，配合不同雙模態壓電片驅 動電壓的相位控制，以調整振動發生膜片的振動行為，降 低振動發生膜片的共振現象，使振動發生膜片產生較平坦 的音頻響應特性。 進一步地’該振動發生膜片與框架間呈間隔關係之該 二側可進一步透過軟質彈性材料與框架連結，藉此可減少 框架對振動發生膜片產生的箝制效應’避免振動發生膜片 振幅受限導致音壓降低的問題；藉此整體設計能夠令平面 °刺σ八達到音域加寬之優點進少性。 6 201233196 * , * •v * V «· * --【實施方式】 請參閱第1 、2 、3圖所示，係本發明具有多數 態壓電片之壓電平面喇。八之較佳實施例，惟此等實施 供說明之用，在專利申請上並不受此結構之限制；所 電平面喇σ八係包括下述構成： 一框架10，為硬質基材（可為塑膠、金屬、木材 瓷等）所構成，係設成一框圍型態而包括數個側架部 12以及形成於該等側架部11、12中央之一透空狀組設 13 ;本實施例之框架10係設成一矩形框圍型態，但不 籲於此，其他如多邊形、圓形等均為可實施型態； 壓電致動器20，組設定位於該框架10之其中相對 架部11，各該壓電致動器20包括間隔配置型態之多數 模態壓：電片21所構成， 一振動發生膜片30 (或簡稱振膜），其可為ΡΙ、 PEI 、 PET 、PC等高分子塑膠材質薄片所構成的低剛 分子膜片，厚度係介於20μιη至200μιη之間為最佳實施例 振動發生膜片30設於該框架10之透空狀組設空間13中 動發生膜片30之其中相對二側結合固定於壓電致動器 φ雙模態壓電片21，該振動發生膜片30之另其中相對二 框架10的上、下側架部12之間則呈間隔關係（參第1 W所標示處）； 如第1圖所示，該振動發生膜片30與框架10側架 之間呈間隔關係的該二側，與框架10之間並可藉由局 佈型態之軟質連結片40相連結（數量不拘），所述軟 結片40可為尼龍、矽膠、橡膠、矽橡膠等材料所製成 狀體或薄片所構成；其中該軟質連結片40厚度係介於 至200μπι之間為最佳實施例；藉由此軟質連結片40的設 係藉以使振動發生膜片30中央部份能穩固接合於框架 但不會限制其振動，當該框架10之框圍型態越呈長形 雙模 例僅 述壓 、陶 11、 空間 侷限 二側 個雙 ΡΕ、 性南 ，該 ，振 20之 側與 圖之 部12 部分 質連 之網 50μιη 置， 10， 比例 7 201233196 延伸時，此軟質連結片4〇 振動發生膜片30由於長& 的中頻（-1kHz)附近會有音 片40除了可避免中頻部份 動發生膜片30邊緣懸空而 的失真率。又，若使用彈 性支撐構造時，壓電平面 (請參表中實線狀之曲線 該軟質連結片時之狀態） 域的音壓提升，高音域的 片40的使用，能使音頻響 方形的振動發生膜片30降 動器20的驅動，可產生低 政果。 詳如第2 、3圖所揭 態堡電片一側剖切形成多 每一條狀内凹部22之間相 電片21 ’俾構成具有多數 ’亦即本實施例之壓電致 。其中該雙模態壓電片21 該梳子般的壓電致動器2〇 架部11上（請配合參閱第 另一端則黏結於振動發生 振動發生膜片30產生振動 以驅動電壓極性相同的電 片30產生最大的位移量， 極性相反方式聯接，以抑 振現象’得到音頻響應寬 相反設計，使振動發生膜 產生平坦化之音頻響應功 的設置越 方向缺乏 壓下降現 音壓損失 產生噪音 性尼龍網 喇。八的音 所示，虛 ’其低音 音壓略為 應有更平 低了起振 頻率的振 ，該壓 數個彼 對形成 雙模態 動器20 之厚度 一端係 1圖所 膜片30 而發聲 路並聯 或選擇 制特定 頻化的 片30的 效。 有其必 支撐， 象，故 之作用 的問題 為軟質 頻響應 線狀之 域部份 降低， 穩的音 頻率， 動，達 要性。 導致在 使用該 外，更 ，能夠 連結片 有如第 曲線則 變化不 故經由 壓輸出 透過兩 到低音 再者’該 音頻響應 軟質連結 可減少振 降低制σ八 40作為軟 4圖所示 為未使用 大，中音 軟質連結 。其中長 側壓電致 域響應的 電致動 此平行 一單獨 壓電片 係切割 係介於 固定在 示）， 側邊， 。各壓 相接， 特定區 頻率的 效果。 共振現 器20可 的條狀 的懸臂 21的壓 成如梳 2〇μπι 至 該框架 形成懸 於電壓 電致動 以驅動 域致動 振動發 透過驅 象受到 藉由一雙模 内凹部22， 式雙模態壓 電致動器20 子般型態， 200μπι 之間。 10相對二側 臂式結構， 趨動下能使 器20之間可 振動發生膜 器驅動電壓 生膜片30共 動電壓極性 抑制，進而 8 201233196 • r 其中， 構成，其隨 面制〇八除由 致動器20所 又如第 ，係可為一 成，該壓電 則結合有電 φ或者壓電複 係介於20μπι 承上段 形成之實施 為主，因此 的高音頻音 應時，則可 如第5圖所 鲁圖，其金屬 電性的塵電 214與有機 有較低剛性 製作成平面 使整體的音 中所示電極 材的高壓電 的寬度比例 該壓電致動器20可使用雙模態的壓電振動片所 尺寸大小會產生一特定的共振頻率，使壓電平 振動發生膜片30產生的聲音外，會存在由壓電 產生的聲音。 2 、3圖所揭’該雙模態壓電片21之具體結構 金屬片211兩面分別貼合有一壓電片212所構 片212為電路並聯相接型態，壓電片212表面 極213 :又該壓電片212係可採用壓電陶瓷片 材薄片所構成之型態；而該壓電片212之厚度 至200μιη之間為最佳實施例。 ’所述壓電致動器20為陶瓷片與金屬片相黏結 例時’剛性高的特性使得產生的聲音以高音域 以壓電致動器20驅動的壓電平面喇。八會有較大 壓，若為改善壓電平面喇。八在高音域的音頻響 使用壓電複材製作雙模態壓電致動器，此結構 示即為另一雙模態之壓電致動器20Β結構剖視 片211兩面所貼合的壓電片212係以具有高壓 複材片替代，所述壓電複材片係由壓電陶瓷片 質高分子材料215 (如樹脂）所複合形成，具 ，能降低其壓電致動器20Β的共振頻率’改善 薄型喇叭時高音域部份音壓過高的現象，進而 頻響應趨於一致，減少失真的產生。又第5圖 213直接在黏結於壓電片212上以確保壓電複 性。壓電複材片之壓電片212中的壓電陶瓷片 係為壓電複材月中壓電相的含量，此含量愈高 201233196, the sound pressure of each frequency must also be maintained in a state close enough to the sound fluctuations too large. The use of southern molecular vibrations to produce m-chip improvement is relatively weak in response to the sound range. » For example, JP3082299 adds South rigid particles 5 to improve The sound field response is not 5 or the conventional piezoelectric pull port 8 which uses a porous structure to reduce the rigidity of the metal sheet and the sound pressure of 5 Pk, such as the patent JP8084396, is still present. Phenomenon and deficiency 0 Another example is JP2001285994% US2010158283 Revealing vibration attenuating material (damper) > Reducing the resonance phenomenon of the diaphragm by the resonance of the resonance generated by the resonance to achieve wide frequency and lacking the similar multilayer structure The design still has the complexity of the problem. JP2279000, JP3139999 US5828768 JP3589873 > 94 etc. The cavity» directly presses the pressure on the wall of the container, and the speaker through the cavity is insufficient.> The vibration amplitude generated by the thicker wall of the container is relatively low. The sound pressure of the output is relatively low. How to make a low-frequency response with a simpler structure and a piezoelectric plane with a wide range of frequencies. 0 刺口八1 It is a development of the electric plane. The future development focus is 0. In view of this, the inventor has been engaged in related products for many years. The design experience is based on the above-mentioned § 5 detailed design and prudence, and the invention is practical. 0 Avoiding the problem of the high and low range is the problem of the metal sheet, which seems to have insufficient bandwidth and large amplitude. Effect, . Another example is the JP20031020 electric actuator compensation bandwidth is limited, after making a low-cost pressure manufacturing development evaluation, [invention content] 201233196 • . « V * -· The main purpose of this month is to provide a majority The piezoelectric plane of the bimodal piezoelectric sheet, the problem of the problem to be solved, is aimed at how to develop a new type of piezoelectric planar horn with better ideality. The invention solves the problem. The technical feature is mainly that the piezoelectric flat frame includes a frame-type and includes a plurality of side frame portions and a space formed in the center of the side frame portions; the piezoelectric actuation The slant is positioned in the frame, wherein the piezoelectric actuators of the frame comprise a plurality of bimodal piezoelectric sheets of a spaced configuration; a vibration generating diaphragm is disposed in the frame In the vacant space, the two sides of the vibration generating diaphragm are fixed to the piezoelectric actuator, and the opposite side of the vibration generating diaphragm is opposite to the frame. Interval With this innovative and unique design, the present invention can achieve the following advantages in comparison with the prior art: - A piezoelectric actuator composed of the majority of the bimodal piezoelectric sheets can be fixed to both sides of the vibration generating diaphragm Through the high deformation of the bimodal piezoelectric piece, the Φ vibration generates a sound with high sound pressure; the bimodal piezoelectric piece in the piezoelectric actuator can be driven separately by the driving circuit to match different bimodal pressures The phase control of the driving voltage of the chip is used to adjust the vibration behavior of the vibration generating diaphragm, reduce the resonance phenomenon of the vibration generating diaphragm, and make the diaphragm generate a relatively flat audio response characteristic. Further, the two sides of the vibration generating film and the frame may be further connected to the frame through the soft elastic material, thereby reducing the clamping effect of the frame on the vibration generating film. Limiting the problem of lowering the sound pressure; the overall design can make the plane thorn σ eight reach the advantage of widening the range. 6 201233196 * , * • v * V «· * -- [Embodiment] Please refer to the first, second, and third figures, which are piezoelectric planes of the present invention having a piezoelectric sheet of a majority. The preferred embodiment of the eighth embodiment, but the implementation is for illustrative purposes, and is not limited by the structure in the patent application; the electrical plane σ 八 系 includes the following composition: a frame 10, which is a rigid substrate ( The structure is made of plastic, metal, wood, etc., and is formed into a frame type and includes a plurality of side frame portions 12 and a hollow-shaped group 13 formed in the center of the side frame portions 11 and 12; The frame 10 of the embodiment is configured as a rectangular frame, but not limited thereto, and other shapes such as a polygon, a circle, and the like are implementable; the piezoelectric actuator 20 is set in the frame 10 Each of the piezoelectric actuators 20 includes a plurality of modal pressures in a spaced-apart configuration: an electrical sheet 21, and a vibration generating diaphragm 30 (or simply a diaphragm), which may be ΡΙ, PEI, A low-rigidity film composed of a polymer plastic sheet such as PET or PC, and a thickness of between 20 μm and 200 μm is a preferred embodiment. The vibration generating film 30 is disposed in the transparent space 13 of the frame 10. The two sides of the intermediate motion diaphragm 30 are fixed to the piezoelectric actuator φ bimodal The piezoelectric sheet 21, the vibration generating film 30 is spaced apart from the upper and lower side frame portions 12 of the two frames 10 (as indicated by the first W); as shown in Fig. 1, The two sides of the vibration generating diaphragm 30 and the side frame of the frame 10 are spaced apart from each other, and are connected to the frame 10 by a soft connecting piece 40 of a local cloth type (the number is not limited), and the soft piece is 40 may be made of a material or a sheet made of a material such as nylon, silicone, rubber, or rubber; wherein the thickness of the flexible web 40 is between 200 μm; the preferred embodiment; The arrangement is such that the central portion of the vibration generating diaphragm 30 can be firmly joined to the frame without restricting its vibration. When the frame 10 of the frame 10 is elongated, the double mode is only described, and the space is limited. Two sides of the double ΡΕ, sex south, the side of the vibration 20 and the part of the figure 12 part of the network 50μιη set, 10, the ratio of 7 201233196 extended, this soft joint piece 4 〇 vibration occurs the diaphragm 30 due to long & ; there will be a sound film 40 near the intermediate frequency (-1kHz), in addition to avoiding the intermediate frequency Part of the dynamic distortion occurs when the edge of the diaphragm 30 is suspended. Moreover, when the elastic support structure is used, the piezoelectric pressure of the piezoelectric plane (refer to the state of the solid line in the table) is improved, and the use of the high-range sheet 40 enables the audio to be square. The vibration generating diaphragm 30 is driven by the dancer 20 to produce a low degree of success. As shown in Figs. 2 and 3, the side of the electric piece is cut and formed. The phase piece 21' between each of the inner concave portions 22 constitutes a plurality of piezoelectric electrodes of the present embodiment. The bimodal piezoelectric sheet 21 is mounted on the truss portion 11 of the comb-like piezoelectric actuator 2 (please refer to the other end to be bonded to the vibration to generate vibration. The diaphragm 30 generates vibration to drive the same polarity of the voltage. The sheet 30 produces the largest amount of displacement, and the opposite polarity is coupled to suppress the vibration phenomenon'. The audio response is wide and the design is opposite, so that the vibration generating film is flattened. The setting of the audio response power is less. The direction lacks the pressure drop. The sound pressure loss causes noise. Nylon mesh bar. The sound of the eight sounds, the virtual 'the bass sound pressure is slightly higher than the vibration frequency of the vibration frequency, the pressure is formed in pairs to form the thickness of the dual mode actuator 20 at one end. The film 30 is connected in parallel with the sound path or selects the effect of the specific frequency chip 30. It has to support, and the problem is that the soft frequency response linear region is partially reduced, the stable audio frequency, the motion, and the It is necessary to use it. In addition, it is possible to connect the piece as if the curve is changed, but it can pass through the pressure output and pass the two to the bass. The audio response soft link can be reduced. The vibration reduction system σ 八 40 as a soft 4 figure shows the unused large, mid-range soft connection. The long-side piezoelectric domain response of the electric actuation is parallel to a separate piezoelectric film cutting system is fixed at the display) , side, . Each pressure is connected to the effect of the frequency of the specific zone. The strip-shaped cantilever 21 of the resonant device 20 can be pressed, such as a comb 2〇μπι, until the frame is electrically suspended by a voltage to drive the domain to actuate the vibration through the drive image by a dual-mode recess 22, The bimodal piezoelectric actuator 20 is of a sub-type, between 200 μm. 10 relative to the two-arm structure, the vibration between the device 20 can be generated between the device 20 and the diaphragm voltage of the membrane drive voltage 30 is suppressed, and then 8 201233196 • r, which is composed of The actuator 20 can be a one-piece, and the piezoelectric is combined with the electric φ or the piezoelectric complex is formed by the upper portion of the 20 μπι, so that the high-tone sound can be used. As shown in Fig. 5, the metal electric dust 214 is made of a lower rigidity and is made flat with respect to the width of the high voltage of the electrode material shown in the overall sound. The piezoelectric actuator 20 can be used. The size of the bimodal piezoelectric vibrating piece generates a specific resonance frequency, and the sound generated by the diaphragm 30 is generated by the vibration of the diaphragm level. 2 and 3, the specific structure of the bimorph piezoelectric sheet 21 is bonded to the piezoelectric sheet 212 on both sides, and the sheet 212 is connected in parallel with the circuit. The surface of the piezoelectric sheet 212 is 213: Further, the piezoelectric sheet 212 may be in the form of a sheet of piezoelectric ceramic sheets; and the thickness of the piezoelectric sheet 212 is preferably between 200 μm. The piezoelectric actuator 20 is a piezoelectric sheet which is characterized by a high rigidity when the ceramic sheet is bonded to the metal sheet, so that the generated sound is driven by the piezoelectric actuator 20 in a high sound range. Eight will have a large pressure, if it is to improve the piezoelectric plane. Eight audio sounds in the high range use a piezoelectric composite material to fabricate a bimodal piezoelectric actuator. This structure shows the pressure applied to the two sides of the piezoelectric actuator 20 of the other bimodal structure. The electric piece 212 is replaced by a high-pressure composite material sheet formed by a piezoelectric ceramic sheet-like polymer material 215 (such as a resin), which can reduce the piezoelectric actuator 20Β. Resonance frequency 'improves the phenomenon that the sound pressure is too high in the high-range part of the thin horn, and the frequency response tends to be uniform, reducing distortion. Further, Fig. 5 213 is directly bonded to the piezoelectric piece 212 to ensure piezoelectric reversal. The piezoelectric ceramic piece in the piezoelectric piece 212 of the piezoelectric composite piece is the content of the piezoelectric phase of the piezoelectric composite material, and the higher the content is 201233196
則壓電複材片的壓電I生愈· 高’須配合11刺σ八音頻響庚 如第6圖所揭，本發 之雙模態壓電片21C所形 寸 100 X 50 X 〇· 1 咖[3 的即1( 片，其音頻響應狀態變化 L2、L3分別表示使用五個 、三個同相位兩個反相位 Μ態壓電片聪動電壓相位 由於含有不同振動方向的 音壓以所有的雙模態壓電 位的雙模態壓電片位於中 份的音壓變化，高音域部 。其中使用五個同相位的 0Hz~20kHz間會有相對高的 以形成九音域的平面喇。八 高 > 惟 整 體 壓 電 複 材 片 剛 調 整 變 化 〇 明 亦 可 使 用 多 數 個 上 下 間 成 的 壓 電 致 動 器 20C 5 可 即 PE 與 PI 的 共 聚 物 ) 振 動 如 第 7 圖 所 示 圖 中 之 曲 同 相 位 、 四 個 同 相 位 — 個 等 不 同 驅 動 方 式 5 利 用 相 相 反 可 改 變 音 頻 響 應 的 雙 模 態 壓 電 片 整 體 音 頻 片 同 相 位 驅 動 下 最 大 0 由 央 部 份 > 所 以 直 接 影 響 低 份 受 驅 動 電 壓 相 位 變 化 影 雙 模 態 壓 電 片 驅 動 下 ) 音 壓 值 以 此 說 明 使 用 的 特 性 〇 如 而形成 狀組設 度之振 動發生 域之效 10單元 化圖中 改變整 組設空 更平穩 第8 有複 空間 動發 祺片 果〇 連接 左右 體壓 間13 的音 數個透空狀 為長度相異 生膜片30、 30 、 30B 獲 更具體而言 开^成狹長型 兩邊振動發 電平面制0八 、13B與振 頻響應，達 框架10亦 組設空間 不同的設 30B ;藉 得不同的 ，本貫施 的薄型壓 生膜片30 的音頻響 動發生膜 到拓寬音 °」包括有複 13 、 13B ， 置型態，以 此，以透過 音頻響應， 例係透過不 電平面°刺口八 、30B的長 應狀態，使 片 30 、 30B 域的實用效 數個 且令 供設 不同 進而 同長 ，藉 度規 複數 所構 果。 性也愈 隔設置 配合尺 發生祺 線L1、 反相位 鄰的雙 結果， 響應的 於反相 音域部 響較小 11 八在30 結構可 圍型態 該透空 不同長 度之振 到寬音 之框架 透過變 ’即可 透空狀 的具有 10 201233196 -- ' 補充說明的是，該壓電平面°八能夠應用於音響 '視、電腦等電器，並利用其框架組合定位於所述電器. 設之裝設空間中。或者，該壓電爭面喇。八中之框架w 玎藉由所述電器之本身構造直接形成其框圍型態。 本發明之優點： 1 、主要利用該多數雙模態壓電片所構成之壓電致動 定於振動發生膜片兩側，透過雙模態壓電片的高 • 量使振動發生膜片產生高音壓的聲音，配合不同 態壓電片驅動電壓的相位控制’以調整振動發生 的振動行為’降低振動發生膜片的共振現象，使 發生膜片產生較平坦的音頻響應特性，產生寬頻 果，又利用雙模態壓電致動器的高應變輸出特點 振動發生膜片可產生低音域響應，成為兼具高音 低s域性旎之優異結構，且不須使用吸振材料來 共振現象，避免音壓受吸振材料影響降低，整體 •、組f具有低音域響應與寬頻效果的壓電平面味卜八 ，薄型化電子產品内建音樂高品質喇叭的用途。 2 、藉由該振動發生膜片與框架間呈間隔關係之該二 過軟質連結片與框架連結之結構設計，俾可減少 對振動發生膜片產生的箝制效應，避免振動發生 振幅受限導致音壓降低的問題，因軟質連結片固 振動發生膜片中央部份，能夠有效避免振動發生 振動時因邊緣支撐力不足所產生的顫動，故可減 曰與失真問題。 、 *5^ 电 听預 ，亦 器固 變形 雙模 膜片 振動 化效 ，令 壓與 降低 設計 ，提 側透 框架 膜片 定了 膜片 少。桑 11 201233196 '·丨3 、藉由該壓電致動器係以懸臂式固定於框架上之結構 計，俾可提高電壓驅動時的振動發生膜片的振動位 量，以產生高的音壓輸出。 4 、藉由該框架包括有複數個透空狀組設空間以供設置 同長度振動發生膜片之結構設計，俾可透過變化兩 不同振動發生膜片的長度規格即可改變整體壓電平 剩σ八的音頻響應，使壓電平面。刺具有更平穩的音 響應，達到拓寬音域的實用效果。 ® 上述實施例所揭示者係藉以具體說明本發明，且文 雖透過特定的術語進行說明，當不能以此限定本發明之 利範圍；熟悉此項技術領域之人士當可在瞭解本發明之 神與原則後對其進行變更與修改而達到等效之目的，而 等變更與修改，皆應涵蓋於如后所述之申請專利範圍所 定範疇中。 設 移 不 側 面 頻 中 專 精 此 界Then, the piezoelectric I of the piezoelectric composite material sheet is high and high. It must be matched with the 11 thorn σ eight audio horn. As shown in Fig. 6, the bimodal piezoelectric sheet 21C of the present invention is 100 X 50 X 〇· 1 咖 [3 is 1 (chip, its audio response state changes L2, L3 respectively indicate the use of five, three in-phase two anti-phase 压电 state piezoelectric film smart voltage phase due to sound pressure with different vibration directions The bimodal piezoelectric piece with all bimodal piezoelectric positions is located in the middle part of the sound pressure change, high range, and the use of five in-phase 0Hz~20kHz will have a relatively high plane to form the nine-range. La. Eight highs> However, the piezoelectric composite material sheet has just been adjusted and modified. It is also possible to use a plurality of piezoelectric actuators 20C 5 which can form a copolymer of PE and PI. The vibration is as shown in Fig. 7. In the figure, the same phase, four in-phase, and the like, different driving modes. 5 The opposite mode can change the audio response. The dual-mode piezoelectric piece is the same as the whole audio piece. Therefore, it directly affects the low-frequency driven voltage phase change and the bi-mode piezoelectric sheet is driven.) The sound pressure value is used to illustrate the characteristics of the use, such as the vibration generation domain effect of the formation degree. Change the whole set of air to be more stable. 8th. There is a complex space. The 祺 〇 〇 〇 〇 〇 〇 〇 〇 〇 〇 〇 〇 〇 〇 〇 〇 13 13 13 13 13 13 13 13 13 13 13 13 13 13 13 13 30 30 30 30 30 30 30 30 ^Single-long two-side vibration power generation plane system 0,8B and vibration frequency response, the frame 10 is also set up with different space 30B; borrowing different, the audio stimulation film of the thin compact diaphragm 30 To the widening sound °" includes the complex 13, 13B, set the state, in order to pass the audio response, for example, through the non-electrical plane, the length of the puncturing eight, 30B, the practical effect of the 30, 30B domain A number of different installations and the same length, using the plurals of the rules. The sex is also set to match the ruler to produce the double result of the 祺 line L1 and the anti-phase neighbor. The response is smaller in the opposite phase range. 11 八 in the 30 structure can be surrounded by the different lengths of the vibration to the wide sound. The frame can be permeable to the air-like shape with 10 201233196 -- ' It is added that the piezoelectric plane can be applied to audio appliances such as audio and computer, and is positioned in the electrical device by its frame combination. In the installation space. Or, the piezoelectric face is la. The frame of the eight middle w directly forms its frame type by the structure of the electric appliance itself. Advantages of the invention: 1. The piezoelectric actuation mainly composed of the majority of the bimodal piezoelectric sheets is set on both sides of the vibration generating diaphragm, and the vibration generating diaphragm is generated by the high amount of the bimodal piezoelectric sheet. The sound of high-pitched sound, combined with the phase control of the driving voltage of different piezoelectric plates, 'to adjust the vibration behavior of vibration' reduces the resonance phenomenon of the vibration-producing diaphragm, so that the diaphragm produces a flatter audio response characteristic, resulting in a wide-band effect. The high-strain output characteristic of the bimodal piezoelectric actuator is used to generate the low-range response, which is an excellent structure with high-pitched and low-s-domain enthalpy. It does not require the use of vibration absorbing materials to resonate and avoid sound. The pressure is reduced by the vibration absorbing material, and the whole group and the group f have the low-frequency effect of the piezoelectric plane, and the thin-type electronic products have built-in music and high-quality speakers. 2. The structural design of the two-soft connecting piece and the frame connected by the vibration generating diaphragm and the frame can reduce the clamping effect on the vibration generating diaphragm, and avoid the amplitude limitation of the vibration. The problem of pressure reduction is caused by the soft vibration of the sheet-solid vibration, which can effectively avoid the chattering caused by insufficient edge support force when the vibration is generated, so that the problem of distortion and distortion can be reduced. *5^Electric listening pre-fabrication, and the two-mode diaphragm vibrating effect is also fixed, the pressure is reduced and the design is lowered, and the diaphragm is set to reduce the diaphragm. Sang 11 201233196 '·丨3, by the structure of the piezoelectric actuator fixedly mounted on the frame by cantilever type, the vibration amount of the diaphragm can be increased by the vibration during voltage driving to generate a high sound pressure. Output. 4. The frame includes a plurality of vacant space-set spaces for designing a diaphragm of the same length vibration generating diaphragm, and the overall pressure level can be changed by changing the length specifications of the two different vibration generating diaphragms. The audio response of sigma eight makes the piezoelectric plane. The thorn has a smoother sound response and achieves a practical effect of widening the sound range. The above embodiments are disclosed to illustrate the present invention, and the description of the present invention is not intended to limit the scope of the present invention; those skilled in the art can understand the present invention. Changes and modifications are made to the equivalent of the principles, and such changes and modifications are to be included in the scope of the patent application as described later. Set the shift to the side frequency
12 201233196 :【圖式簡單說明】 第 1 圖 本 發 明 壓 電 平 面 第 2 圖 :本 發 明 之 壓 電 致 第 3 圖： :本 發 明 之 壓 電 致 第 4 圖： :本 發 明 之 軟 質 連 面 0刺 口八 的 音 頻 響 第 5 圖 :本 發 明 之 雙 模 態 之 剖 視 圖 〇 第 6 圖 :本 發 明 之 雙 模 態 第 7 圖 :本 發 明 之 雙 模 態 響 應 之 改 變 狀 態 第 8 圖 :本 發 明 之 框 架 為 【主要元件符號說明】 框架 側架部 透空狀組設空間 籲壓電致動器 雙模態壓電片 金屬片 壓電片 電極 壓電陶瓷片 有機質高分子材料 條狀内凹部 振動發生膜片 軟質連結片 α八較佳實施例之平面圖。 器結構較佳實施例之平面圖。 器結構較佳實施例之剖視圊。 片使用彈性尼龍網時其壓電平 曲線圖。 電致動器結構型態另一實施例 電片為間隔設置型態例圖。 電片驅動電壓相位變化對音頻 線圖。 數框圍型態構成之實施例圖。 〇12 201233196 : [Simple diagram of the drawing] Fig. 1 Piezoelectric plane of the invention Fig. 2: Piezoelectric diagram of the invention Fig. 3: Piezoelectric diagram of the invention Fig. 4: Soft junction of the invention 0 Fig. 5 is a cross-sectional view of the bimodal mode of the present invention. Fig. 6 is a bimodal view of the present invention. Fig. 7 is a diagram showing the state of change of the bimodal response of the present invention. Fig. 8: The present invention The frame is [the main component symbol description] The frame side frame portion is vacant and the space is set. The piezoelectric actuator is bimodal piezoelectric sheet metal sheet piezoelectric sheet electrode piezoelectric ceramic sheet organic polymer material strip inner concave portion vibration occurs A plan view of a preferred embodiment of a diaphragm flexible web. Plan view of a preferred embodiment of the structure. A cross-sectional view of a preferred embodiment of the device structure. The pressure level curve of the piece when using an elastic nylon mesh. Another embodiment of the electrical actuator structure is shown in the example of an interval setting pattern. The chip drives the voltage phase change to the audio line graph. A diagram of an embodiment of a number of enclosures. 〇
1、1 2 3、1 3 Β 0、2 0 Β、2 0 C 1 ' 2 1 C 14 15 2 0 ' 3 0 Β 0 131, 1 2 3, 1 3 Β 0, 2 0 Β, 2 0 C 1 ' 2 1 C 14 15 2 0 ' 3 0 Β 0 13