201002092 九、發明說明： 【發明所屬之技術領域】 碳種發聲裝置，尤其涉及-種基於奈米 妷Τ的發聲裝置。 【先前技術】 ▲發聲裝置-般由信號輸入裝置和發聲元件組成。通過 信號輸入裝置輸入電信號給發聲元件，進而發出聲立 前技術中的發聲元件-般爲一揚聲器。該揚聲器爲:種把 電信號轉換成聲音信號的電聲器件。具體地，揚聲器可將 :定範圍㈣音頻電功率錢通過換能方式轉變爲二真小 並具有足够聲壓級的可聽聲音。 先前的揚聲器的種類很多，根據其工作原理，分爲： =式揚聲II、電磁式揚聲器、靜電式揚聲器及壓電式揚 、盗。雖然它們的工作方式不同，但—般均爲通過產生機 械振動推動周圍的空氣，使空氣介質産生波動從而實現“電 _力_聲，，之轉換。其巾，電動式揚㈣的應用最爲廣泛。 請參閱圖1，先前的電動式揚聲器1〇〇通常由三部分 組成：音圈1〇2、磁鐵104以及振膜1〇6。音圈1〇2通常採 用通電導體’當音圈102中輸入一個音頻電流信號時，音 圈102相當於一個载流導體。由於放在所述磁鐵丄⑽產生 的磁場晨，根據載流導體在磁場中會受到力的作用而運動 的原理’音圈102會受到-個大小與音頻電流成正比、方 向隨音頻電流變化而變化的力。因此，音圈1〇2就會在所 述磁鐵104産生的磁場作用下產生振動，並帶動振膜⑽ 6 201002092 振動，振膜廳前後的空氣亦隨之振動，將電信號轉換成 聲波向四周輻射。然而，該電動式揚聲器ι〇〇的結構較爲 複雜，且其必須在有磁的條件下工作。 自九十年代初以來，以奈米碳管（請參i職⑶ nncrotubules of graphitic carbon, Nature, Sumio Iijima, v〇l 3M, p56(1991))爲代表的奈米材料以其獨特的結構和性質 引起了人們極大的關注。折錄|也 關近4年來，隨著奈米碳管及奈米 材：研九的不斷深入’其廣闊的應用前景不斷顯現出來。 = 具有的獨特的電磁學、光學、力學、 先:：： 其在場發射電子源、傳感器、新型 t予軟鐵磁材料等領域的應用研究不斷被報道。然 而，先别技術中却尚未發現奈米碳管用於聲學領域。 有鑒於此，提供一種結構两 作的發聲裝置實為必要。構^可在無磁的條件下工 【發明内容】 聲元：種Si置’其包括：一信號輸入裝置；以及-發 發:元件至少部分設置在-支撑結構表面，該 括多碳管薄膜，該奈米碳管薄膜包 電信號給該發聲元件，、述信號輸入裝置輸人 發出聲波。 5亥表聲兀件加熱周圍氣體介質 下優點所:::方案提供的發聲裝置具有以 、；述發聲裝置中的發聲元件僅包括奈 201002092 米碳管薄膜，無需磁鐵等其它複雜結構，故該發聲裝置的 結構車父爲簡單，有利於降低該發聲裝置的成本。其二，該 發聲裝置利用輸人信號造成該發聲元件溫度變化，從而使 其周圍氣體介質迅速膨脹和收縮，進而發出聲波，無需振 膜且:亥發聲凡件組成的發聲裝置可在無磁的條件下工 作。其二，由於奈米碳管薄膜具有較小的熱容和大的比表 面積’且奈米碳管薄膜中的奈米碳管擇優取向排列，在輸 入信號後’根據信號强度（如電流强度）I變化，由至少 一層奈米碳管薄膜組成的發聲元件可均句地加熱周圍的氣 體介質、迅速升降溫、産生㈣性的溫度變化，並和周圍 氣體介質進行快速熱交換，使周圍㈣介質迅速膨服和收 縮，發出人耳可感知的聲音，且所發出的聲音的頻率範圍 較寬、發聲效果較好。另外，當該發聲元件的厚度比較小 時，例如小於10微米，該發聲元件具有較高的透明度，故 所形成的發聲裝置爲透明發聲裝置，可以直接安裝在各種 顯示裝置、手機顯示屏的顯示表面或油晝的表面作爲節省 空間的透明發聲裝置。其四’由於奈米碳管具有較好的機 械强度和韌性，故由擇優取向排列的奈米碳管組成的奈米 碳管薄膜具有較好的機械强度和韌性，耐用性較好，從而 有利於製備由奈米碳管薄膜組成的各種形狀、尺寸的發聲 裝置，進而方便地應用於各種領域。其五，由於所述發聲 70件至少部分設置在所述支撑結構表面，所述發聲元件可 以承受强度較高的信號輸入，增强所述發聲裴置的發聲效 果0 201002092 【實施方式】 X下將、'•口合附圖詳細說明本技術方案實施例的發聲裝 置。 月，閱圖2，本技術方案第—實施例提供一種發聲裝 10該發聲裝置10包括一信號輸入裝，一發聲元 件14’ -支撑結構16 ’一第一電極142以及一第二電極 1 笛44一。所述發聲元件14設置於所述支撑結構16表面。所述 广電極142和第二電極144間隔設置在所述發聲元件14 f兩端或表面’且與所述發聲轉14電連接。所述第一電 和第二電極144通過外接導線149與所述信號輸入 匕12的兩端電連接，用於將所述信號輸入裝置12中的 電4號輸入到所述發聲元件14申。 且古=述支撑結構16主要起支撐作用’其形狀不限，任何 如一墙壁或桌面，均可作爲本技術 1 夺；;磬一Λ面結構或一曲面結構，並具有一表面。此 而糾聲心牛14直接設置並貼合於該支撑結構16的表 該^於!發聲元件14整體通過支撑結構16支撐，因此 h ^聲元件14可以承受强产敍古 高的發聲强度。^度“的域輸人，從而具有較 剛該支撑結構16的材料不限.，可以爲一硬 :石、玻璃或石英。料，所述支撑結構16還可= 材料’如塑料或樹脂。優選地，該支撑 好^ 有較好的絕熱性能，從而防止該發聲元件14產生的熱4 = 9 201002092 度的被該支撐結構16吸收，盔法碴w丄& .. 、、^7達到加熱周圍教體介皙推 而發聲的目m卜，該支撑結 體"質進 主二"/ ^ 再16應具有一較爲粗才造的 表面，從而可以使設置於上述支 士 14ί空氣或其他外界介質具有更大的接觸面積，進ί可1 一疋程度上改善所述發聲裝置10的發聲效果。 :述發聲元件14包括至少一層奈米碳管薄膜。該奈米 石反官薄膜包括多個擇優取向排列的奈米碳管。所述奈米碳 管薄膜可通過從一奈米碳管陣列中直接拉取而獲得。請參 閱圖3及圖4 ’進—步地’所述奈米碳管薄膜141包括多 個首尾相連且定向排列的奈米碳管I 143，仙奈米碳管 束143具有大致相等的長度，且奈米碳管束143兩端通過 ^德瓦爾力相互連接。該奈米碳管束143包括多個長度相 #且相互平行排列的奈米碳管145。上述從一奈米碳管陣 列中直接拉取而獲得的奈米碳管薄膜141可進一步經過揮 發性有機溶劑處理，處理後的奈米碳管薄膜141的表面體 積比减小’黏性降低，且其機械强度及韌性得到增强。所 述奈米碳管薄膜141的厚度爲〇.5奈米〜100毫米。所述發 ♦元件14的居度爲0.5奈米〜1毫米。進一步地，所述發 聲元件14包括至少兩層重叠設置的奈米碳管薄膜141，相 鄰的奈米碳管薄膜141之間通過凡德瓦爾力緊密結合。該 發聲元件14中的奈米碳管薄膜141的層數不限，且相鄰兩 層奈米碳管薄膜141中的奈米碳管145的排列方向之間具 有一交叉角度α，α大於等於0度且小於等於90度，具體 可依據實際需求製備。當所述發聲元件14包括多層奈米碳 201002092 管薄膜時，由於相鄰兩層奈米碳管薄膜之間通過凡德瓦爾 力緊密結合’故所述發聲元件14本身具有很好的自支撑性 能。所述奈米碳管薄膜141中的奈米碳f 145可爲單壁夺 米碳管、雙壁奈米碳管及多壁奈米碳管令的一種或多種。 所述車f奈米碳管的直經爲〇.5奈米〜50奈米’所述雙壁 不米石反官的直徑爲10奈米〜5〇奈米，所述多壁奈米碳管 的直徑爲1.5奈米〜50太求 € 4 , U不未。所述由至少一層奈米碳管薄 需 發Γ ^件14的長度及寬度不限’具體可根據實際 ^ Ϊ技術方案實施例中，所述發聲元件Μ的長度 件14厘:厂：度爲3厘米’厚度爲5〇奈米。當由該發聲元 ϋ Λ 小時’例如切職米，料聲元件具 透^’故採用該發聲元件14的發聲裝置10爲 運月發聲裝置1〇，可以吉技史继,^ 干屉_主 ^直接女裝在各種顯示裝置、手機顯 的顯不表面或油晝的表面作爲節省U的透明發聲裝 dt管具有極大的比表面積，在凡德瓦爾力的 至乍：下：：未碳管薄膜本身有很好的黏附性，故採用該 薄膜作發聲元件14時，所述發聲元件 上4與所述支撑結構16夕門亦·、，士 β 丁 在所述發聲元件14與所述S支接。進-步地， 包括一黏結層 構16之間還可以進一步 件14的表面辦不）°所述黏結層可設置於所述發聲元 固定於所述支料構16ή^將所述發以件14更好地 緣材料，也可爲具有面。f述黏結層的材料可爲絕 ' 疋‘電性能的材料。本實施例中， 11 201002092 所述黏結層爲一層銀膠。 所述第—電極142和第二電極144由導電材料形成， 其具體形狀結構不限。具體地，所述第—電極和第二 2極144可選擇爲層狀、棒狀、塊狀或其它形狀。所述第 電極142和第二電極144的材料可選擇爲金屬、導電膠、 金屬性奈米碳管、銦錫氧化物（ITO)等。所述第一電極 142和第—電極144用於實現所述信號輸入裝置12盎所述 發聲元件14之間的電連接。所述第一電極！42和第I電極 ⑷分別與所述發聲元# 14電連接。由於所述發聲元件Μ 认置在所述支撑結構16表面，所述第—電極m和第二電 可間隔設置固定在所述發聲元件14兩端或表面。 人 電極142和第二電極144的設置與所述發聲元件 14中的奈米碳管的排列方向有關，至少部分奈米碳管沿所 ^施^極142至第二電極144的方向延伸。本技術方案 歹'，所述第-電極142和第二電極144爲棒狀金屬 電極’所述第一電極142和第二電極144間隔設置固定在 兩端，且所述發聲元件中的全部奈米碳管 亟142至第二電極144的方向延伸。由於所 述第-電極142和第二電極144間隔設置，所述發元 14應用於發聲Μ1”能接人-定的阻值避免短路現象 産^田由於奈米碳管具有極大的比表面積，在凡德瓦爾力 6H下H切管薄膜本身有彳艮好的黏附性，故採用 該至少-層奈米碳管薄膜作發聲^件14時，所述第 ί42和第二電極144與所述發聲元件^之間可以直接黏附 12 201002092 固定’並形成很好的電接觸。 士進一步地，所述第一電極142和第二電極144與所述 么聲兀件14之間還可以進一步包括一導電黏結層（圖未 示）。所述導電黏結層可設置於所述發聲元件14的表面 上。所述導電黏結層在實現第一電極142和第二電極Μ# 與所述發聲元件14電接觸的同時，還可以將所述第一電極 142和第二電極144更好地固定於所述發聲元件14的表面 上。本實施例中，所述導電黏結層爲一層銀膠。 可以理解，本技術方案第一實施例可進一步設置多個 電極於所述發聲元件14表面，其數量不限，只需確保任意 兩個相鄰的電極均間隔設置、與所述發聲元件14電連接二 且均分別與所述信號輸入裝置12的兩端電連接即可。 可以理解，由於所述發聲元件14設置在所述支撑結構 16表面，故所述第一電極142與第二電極144爲可選擇的 結構。所述信號輸入裝置12可直接通過導線149或電極引 線等方式與所述發聲元件14電連接。只需確保所述信號輸 入裝置12能將電信號輸入給所述發聲元件14即可。任: 可實現所述信號輸入裝置12與所述發聲元件14之間電連 接的方式都在本技術方案的保護範圍之内。 所述信號輸入裝置12輸入的信號包括交流電信號或 音頻電信號等。所述信號輸入裝置12通過導線149與所述 第一電極142和第二電極144電連接，並通過所述第—電 極142和第二電極144將電信號輸入到所述發聲元件14 中0 13 201002092 上述發聲裝置10在使用時，由太 丁、未反官薄膜具有較 小的熱谷和大的比表面積’且奈米 專臈中的奈米碳管 擇優取向排列，在輸入信號後，根據 沒很踝乜旎强度（如電流强 度）的變化，由至少一層奈米碳管薄膜組成的發聲元件“ 可均勻地加熱周圍的氣體介質、迅速升降溫、産生周期性 的溫度變化，並和周圍氣體介質進行快速熱交換，使周圍 氣體介質迅速膨脹和收縮，發出人耳可感知的聲音，且所 發出的聲音的頻率範圍較寬、發聲效果較好。故本技術方 案實施例中，所述發聲元件14的發聲原理冑“電备聲” 的轉換，具有廣泛的應用範圍。 圖5爲採用長寬均爲30亳米的四層奈米碳管薄膜用作 所述發聲元件14時’所述發聲裝置則頻率響應特性曲 線。從圖5中可以看出，所述發聲裝置1〇的發聲强度可達 105分貝聲壓級’發聲頻率範圍爲i赫兹至ι〇萬赫兹（即 1Hz〜l00kHz)，所述發聲裝置1〇具有較好的發聲效果。另 外，本技術方案實施例中的發聲元件14具有較好的韌性和 機械强度’所述發聲元件14可方便地製成各種形狀和尺寸 的發聲裝置10,該發聲裝置10可方便地應用於各種可發 聲的裝置中，如音響、手機、MP3、MP4、電視、 等電子領域及其它發聲裝置中。 片异機 請參閱圖6,本技術方案第二實施例提供一種發聲裝 置20,該發聲裝置20包括一信號輸入裝置22、一發聲元 件24、一支撑結構26、一第一電極242、一第二電極244、 一第三電極246以及一第四電極248。 14 201002092 本技術方案第二實施例中的發聲裝置2〇與第一實施 例中的發聲裝置1〇的結構基本相同，區別在於，本技術方 案第二實施例中的發聲元件24環繞所述支撑結構26設 置，形成一環形發聲元件24。所述支撑結構26的形狀不 限，可爲任何立體結構。優選地，所述支撑結構26爲一立 方體、一圓錐體或一圓柱體。本技術方案實施例中，所述 支撑結構26爲一圓柱體。所述第一電極242、第二電極 244、第三電極246和第四電極248間隔設置在所述發聲元 件24表面並與所述發聲元件24電連接。任意兩個相鄰的 電極均分別與所述信號輸入裝置22的兩端電連接，以使位 於相鄰電極之間的發聲元件24接入輸入信號。具體地，先 將不相鄰的兩個電極用導線249連接後與所述信號輸入裝 置22的一端電連接，剩下的兩個電極用導線249連接後與 所述信號輸人裝置22的另—端電連接。本技術方案實施例 中，可先將所述第一電極242和第三電極246用導線249 連接後與所述信號輸入裝置22的一端電連接，再將所述第 二電極244和第四電極248用導線249連接後與所述信號 輸入裝置22的另-端電連接。上述連接方式可實現相鄰電 極之間的奈米ί炭官薄膜的並聯。並聯後的奈米碳管薄膜具 有較小的電阻’可降低卫作㈣。且，域連接方式可使 所述發聲元件24具有較大的輻射面積，且發聲强度得到择 强，從而實現環繞發聲效果。 9 可以理解’本技術方案可設置多個電極，其數量不限， 只需癌保任意兩個相鄰的電極均間隔設置、與所述發聲元 15 201002092 •件24電連接，且均分別與所述信號輸入裝置22的兩端電 .連接即可。 請參閱圖7,本技術方案第三實施例提供—種發聲裝 置30該發聲裝置3〇包括一信號輸入裝置％、一發聲元 件34、一支撑結構36、一第一電極342、一第二電極料4。 本技術方案第三實施例中的發聲裝置3〇與第一實施 Η中的U裝置10的結構基本相同，區別在於，本技術方 案第三實施例中的發聲元件34部分設置在所述支撑結構 36表面’從而在所述發聲元件34纟面至支撑結構％之間 音空間。所形成的攏音空間可爲-封閉空間或-開放工間。所述支撑結構3 6可爲一 v型或口型结構或一 具有狹窄開π的腔體。當所述支撑結構36爲有窄 口的腔體時’該發聲騎3 /狹以 σ ^ ^ , + j十鋪固疋故置於該腔體的開 從而形成一亥姆霍兹共振腔。該支撑結構36的材料 爲塑料、金屬或玻璃等。本技術方案實施例中，所 述支撑結構36爲—V型結構。所述發聲元件34設置在所 述V、型結構的兩端，即從Η結構的一端延仲至另^所 使戶:述發聲兀件34部分懸空設置’從而 34表面至支撑結構36之間形成一搬音 極342和第二電極344間隔設置在 斤^ 所述第-電極342和第二電極糾連接導線 表面。 信號輸入裝置32的兩端電連接。所述 構、斤： 反射所料聲元件34位於所述支撑結構^一則。構=可 增强所述發聲裝置3〇的發聲效果。 ！的革波， 16 201002092 本技術方案實施例提供的發聲裝置具有以下優點：其 一’由於所述發聲裝置中的發聲元件僅包括奈米碳管薄 ，，無需磁鐵等其它複雜結構，故該發聲裝置的結構較爲 簡單，有利於降低該發聲裝置的成本。其二，該發聲裝置 利用輸入信號造成該發聲元件溫度變化，從而使其周圍氣 體^質迅速膨脹和收縮，進而發出聲波，無需振膜，且該 毛聲元件組成的發聲裝置可在無磁的條件下工作。其三， 由於奈米碳管薄膜具有較小的熱容和大的比表面積，且太 米碳管薄膜中的奈米碳管擇優取向排列且部分奈米碳管: 排列方向沿從所述第一電極至第二電極的方向延伸，在輪 入信號後’根據信號强度（如電流强度）的變化，由至少 米碳管薄膜組成的發聲元件可均句地加熱周圍的氣 體"質、迅速升降溫、産生周期性的溫度變化， 行快速熱交換，使周圍氣體介質迅速膨服和Ξ =寬=人耳可感知的聲音’且所發出的聲音的頻率範圍 =(1HZ〜100kHZ)、發聲效果較好。另外，當該發聲元 ，的厚度比較小時，例如小於10微米，該發聲元 兩的透明度，故所形成的發聲襄置爲透明發聲裝置了 = 直接安裝在各種顯示裝置、手機顯示 2 可以 的表面作爲節省空間的透明發聲裝置。/不x面或油晝 管具有較好的機械强度和拿刃性，則由至少兩奈米碳 向擇優取向排列的奈米碳管組成的奈米碳管二膜方 的機械强度和韌性，财用性較好 …、乂好 碳管薄膜組成的各種形狀、尺寸的於製備由奈米 Μ «置，進而方便地 17 201002092 應==各種領域。其五’由於奈米碳管薄膜爲從直接一奈 米石反吕陣列中拉取獲得，故所述奈米碳管薄膜具有較好的 黏度，從而有利於製備大面積的發聲元件及發聲裝置。其 ^田所述支撑結構爲一平面時，所述發聲元件直接設置 並，口於該支撑結構的表面，故該發聲元件可以承受强度 ，高的信號輸人’從而具有較高的發聲强度；當所述支撑 、°構，v型、u型結構或一具有狹窄開口的腔體時，所 述發聲it件部分設置於所述支撑結構表面，形成—擺音空 間，所述支撑結構可反射所述發聲元件發出的聲波，增强 所述發聲裝置的發聲效果。 ^ 4上所述，本發明確已符合發明專利之要件，遂依法 提出專利申μ。$ ’以上所述者僅為本發明之較佳實施例， 自不月匕以此限制本案之中請專利^圍。舉凡習知本案技藝 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。 【圓式簡單說明】 圖1係現有技術中揚聲器的結構示意圖。 圖2係本技術方案第一實施例發聲裝置的結構示意 圖。 圖3係本技術方案第一實施例發聲裝置中奈米碳管薄 骐的結構示意圖。 圖4係本技術方案第一實施例發聲裴置中奈米碳管薄 膜的掃描電鏡照片。 '、 圖5係本技術方案第一實施例發聲裝置的頻率響應特 18 201002092 .性曲線。 圖6係本技術方案第二實施例發聲裝置的結構示意 圖。 圖7係本技術方案第三實施例發聲裝置的結構示意 圖。 【主要元件符號說明】 揚聲器 100 音圈 102 磁鐵 104 振膜 106 發聲裝置 10, 20, 30 信號輸入裝置 12, 22, 32 發聲元件 14, 24, 34 支撐結構 16, 26, 36 奈米碳管薄膜 141 奈米碳管束 143 奈米碳管 145 第一電極 142, 242, 342 第二電極 144, 244, 344 導線 149, 249, 349 第三電極 246 第四電極 248 19201002092 IX. Description of the invention: [Technical field to which the invention pertains] A carbon sounding device, in particular, a nanophone-based sounding device. [Prior Art] ▲ The sounding device is generally composed of a signal input device and a sounding element. The electrical input signal is input to the sound generating component through the signal input device, and the sound generating component in the sound front technology is generally a speaker. The speaker is an electroacoustic device that converts an electrical signal into a sound signal. Specifically, the speaker can convert the range of (four) audio electric power money into a two-small and audible sound having a sufficient sound pressure level. There are many types of speakers in the past. According to their working principle, they are divided into: = type speaker II, electromagnetic speaker, electrostatic speaker and piezoelectric type. Although they work in different ways, they all use the mechanical vibration to push the surrounding air to make the air medium fluctuate, thus achieving the "electric_force_sound, conversion. The towel, electric type (four) is the most widely used. Referring to Figure 1, the previous electric speaker 1〇〇 usually consists of three parts: voice coil 1〇2, magnet 104 and diaphragm 1〇6. Voice coil 1〇2 usually uses energized conductor 'When voice coil 102 When an audio current signal is input, the voice coil 102 is equivalent to a current-carrying conductor. Due to the magnetic field generated by the magnet 丄 (10), the principle of the motion of the current-carrying conductor in the magnetic field is affected. 102 will be subjected to a force that is proportional to the audio current and whose direction changes with the audio current. Therefore, the voice coil 1〇2 will vibrate under the magnetic field generated by the magnet 104 and drive the diaphragm (10) 6 201002092 Vibration, the air in front of and behind the diaphragm chamber also vibrates, converting the electrical signal into sound waves radiating around. However, the structure of the electric speaker is complicated, and it must be in the magnetic strip Worked under the work. Since the early 1990s, nanomaterials represented by carbon nanotubes (please refer to i (3) nncrotubules of graphitic carbon, Nature, Sumio Iijima, v〇l 3M, p56 (1991)) The unique structure and nature have aroused people's great attention. The record|distribution| also has been close to the past four years, with the deepening of the carbon nanotubes and nano-materials: Yanjiu's broad application prospects. Unique electromagnetism, optics, mechanics, first:: Its application research in field emission electron sources, sensors, new t-soft ferromagnetic materials, etc. has been reported. However, nanocarbon has not been found in the prior art. The tube is used in the field of acoustics. In view of this, it is necessary to provide a sounding device with two structures. The structure can be operated under the condition of no magnetism. [Inventive content] The sound element: the type of Si is set to include: a signal input device; And - the hair component: the component is at least partially disposed on the surface of the support structure, the carbon nanotube film, the carbon nanotube film is electrically signaled to the sounding component, and the signal input device is input to emit sound waves. Conditional addition Advantages of the hot surrounding gas medium::: The sounding device provided by the scheme has the sounding component in the sounding device, and only the nanometer 201002092 m carbon tube film is included, and no complicated structure such as a magnet is needed, so the structure of the sounding device is the parent of the structure. For the sake of simplicity, it is advantageous to reduce the cost of the sounding device. Secondly, the sounding device uses the input signal to cause the temperature of the sounding element to change, so that the surrounding gas medium rapidly expands and contracts, thereby generating sound waves without a diaphragm and: The sounding device composed of sounding parts can work under non-magnetic conditions. Second, because the carbon nanotube film has a small heat capacity and a large specific surface area, and the carbon nanotubes in the carbon nanotube film are preferred. Orientation, after input signal 'according to signal intensity (such as current intensity) I, sounding elements composed of at least one layer of carbon nanotube film can uniformly heat the surrounding gas medium, rapidly rise and fall temperature, and produce (four) temperature Change and exchange heat with the surrounding gaseous medium to rapidly expand and contract the surrounding (4) medium, giving the human ear a perceptible sound Frequency range of the sound emitted and a wider, better sound. In addition, when the thickness of the sound emitting element is relatively small, for example, less than 10 micrometers, the sounding element has high transparency, so that the sound generating device is a transparent sounding device, which can be directly mounted on display surfaces of various display devices and mobile phone display screens. Or the surface of the oil raft is used as a space-saving transparent sounding device. Because of the good mechanical strength and toughness of the carbon nanotubes, the carbon nanotube film composed of the preferred orientation of the carbon nanotubes has good mechanical strength and toughness, and has good durability, which is advantageous. In order to prepare a sounding device of various shapes and sizes composed of a carbon nanotube film, it is conveniently applied to various fields. Fifthly, since the sounding 70 is at least partially disposed on the surface of the supporting structure, the sounding component can withstand high-intensity signal input, and enhance the sounding effect of the sounding device. 0 201002092 [Embodiment] X The sounding device of the embodiment of the present technical solution is described in detail in the accompanying drawings. According to the second embodiment of the present invention, the sounding device 10 includes a signal input device, a sound emitting device 14'-support structure 16' a first electrode 142 and a second electrode 1 flute. 44 one. The sounding element 14 is disposed on a surface of the support structure 16. The wide electrode 142 and the second electrode 144 are disposed at both ends or surfaces of the sound emitting element 14 f and are electrically connected to the sounding turn 14 . The first and second electrodes 144 are electrically coupled to both ends of the signal input port 12 via external wires 149 for inputting the number 4 of the signal input device 12 to the sounding element 14. Moreover, the support structure 16 mainly serves as a support function, and its shape is not limited. Any such as a wall or a table top can be used as the present technology; a Λ-face structure or a curved structure has a surface. Therefore, the sound-correcting heart 14 is directly disposed and attached to the surface of the support structure 16. The sound-emitting element 14 is entirely supported by the support structure 16, so that the h^sound element 14 can withstand the strong sound intensity of the high-quality. The field of "degree" is input, so that the material having the support structure 16 is not limited. It may be a hard: stone, glass or quartz. The support structure 16 may also be a material such as plastic or resin. Preferably, the support has better thermal insulation properties, thereby preventing the heat generated by the sound generating element 14 from being absorbed by the support structure 16 by 4 = 201002092 degrees, and the helmet method 碴w丄&., Heating the surrounding body to push and vocalize the object, the support body "quality into the main two " / ^ then 16 should have a relatively thick surface, so that it can be set to the above 14 ί The air or other external medium has a larger contact area, and the sounding effect of the sounding device 10 is improved to a certain extent. The sounding element 14 includes at least one layer of carbon nanotube film. The nano stone reverse film The carbon nanotubes are arranged in a plurality of preferred orientations. The carbon nanotube film can be obtained by directly pulling from a carbon nanotube array. Please refer to FIG. 3 and FIG. 4 'step by step' The carbon nanotube film 141 comprises a plurality of end-to-end and oriented arrays The carbon nanotubes I 143, the carbon nanotube bundles 143 have substantially the same length, and the carbon nanotube bundles 143 are connected to each other by a ^Deval force. The carbon nanotube bundles 143 include a plurality of length phases # and are arranged in parallel with each other. The carbon nanotube film 145. The carbon nanotube film 141 obtained by directly drawing from the carbon nanotube array can be further subjected to volatile organic solvent treatment, and the surface volume ratio of the treated carbon nanotube film 141 The reduction of the viscosity is reduced, and the mechanical strength and toughness thereof are enhanced. The thickness of the carbon nanotube film 141 is 〇.5 nm to 100 mm. The occupancy of the element 14 is 0.5 nm~ 1 mm. Further, the sound emitting element 14 includes at least two layers of carbon nanotube film 141 disposed one on top of another, and the adjacent carbon nanotube film 141 is tightly coupled by van der Waals force. The number of layers of the carbon nanotube film 141 is not limited, and the arrangement direction of the carbon nanotubes 145 in the adjacent two layers of the carbon nanotube film 141 has an intersection angle α, and α is greater than or equal to 0 degrees and less than or equal to 90. Degree, specifically can be prepared according to actual needs. When the sound emitting element 14 comprises a multi-layered nanocarbon 201002092 tube film, the sound-emitting element 14 itself has good self-supporting properties due to the close combination of the adjacent two layers of carbon nanotube film by the van der Waals force. The carbon carbon 145 in the carbon nanotube film 141 may be one or more of a single-walled carbon nanotube, a double-walled carbon nanotube, and a multi-walled carbon nanotube. The diameter of the tube is 〇.5 nm ~ 50 nm. The diameter of the double-walled non-meter stone is 10 nm ~ 5 〇 nanometer, and the diameter of the multi-walled carbon nanotube is 1.5 nm. ~50 too for € 4, U is not. The length and width of the piece 14 are limited by at least one layer of carbon nanotubes. The specific length and width of the piece 14 are not limited to the specific embodiment of the technical solution. The length of the Μ is 14%: the factory: the degree is 3 cm' thickness is 5 〇 nanometer. When the sounding element is Λ Λ hour 'for example, the metering element is permeable, the sounding device 10 using the sounding element 14 is the sounding device 1 〇, can be Jiji Shiji, ^ dry drawer _ main ^ Direct women's clothing on various display devices, mobile phones display surface or oily surface as a U-saving transparent sound-emitting dt tube with a large specific surface area, in the van der Waals force: Bottom:: Uncarbon pipe The film itself has good adhesion, so when the film is used as the sounding element 14, the sounding element 4 and the supporting structure 16 are also in the sounding element 14 and the S Branch. Further, including a bonding layer structure 16, the surface of the component 14 may be further disposed.) The bonding layer may be disposed on the sounding element and fixed to the support structure. 14 better geomaterials, but also can have a face. The material of the adhesive layer can be a material that is absolutely electrically conductive. In this embodiment, 11 201002092 is a layer of silver glue. The first electrode 142 and the second electrode 144 are formed of a conductive material, and the specific shape structure thereof is not limited. Specifically, the first electrode and the second electrode 144 may be selected in the form of a layer, a rod, a block or the like. The material of the first electrode 142 and the second electrode 144 may be selected from a metal, a conductive paste, a metallic carbon nanotube, indium tin oxide (ITO), or the like. The first electrode 142 and the first electrode 144 are used to effect electrical connection between the signal input device 12 and the sound emitting element 14. The first electrode! 42 and the first electrode (4) are electrically connected to the utterance element #14, respectively. Since the sound emitting element 认 is recognized on the surface of the support structure 16, the first electrode m and the second electrode are spaced apart from each other at the both ends or surfaces of the sound emitting element 14. The arrangement of the human electrode 142 and the second electrode 144 is related to the arrangement direction of the carbon nanotubes in the sound emitting element 14, and at least a portion of the carbon nanotubes extend in the direction from the electrode 142 to the second electrode 144. In the technical solution, the first electrode 142 and the second electrode 144 are rod-shaped metal electrodes. The first electrode 142 and the second electrode 144 are fixedly disposed at both ends, and all of the sounding elements are disposed. The carbon nanotube 142 extends in the direction of the second electrode 144. Since the first electrode 142 and the second electrode 144 are spaced apart, the hair element 14 is applied to the vocal Μ1", and the resistance value can be prevented from being short-circuited. Since the carbon nanotube has a large specific surface area, The H-cut film itself has good adhesion under van der Waals force 6H, so when the at least-layer carbon nanotube film is used as the sounding member 14, the ί42 and the second electrode 144 are The sound emitting element can directly adhere to the 12 201002092 fixing and form a good electrical contact. Further, the first electrode 142 and the second electrode 144 and the squealing member 14 may further include a a conductive bonding layer (not shown). The conductive bonding layer may be disposed on a surface of the sound emitting element 14. The conductive bonding layer electrically implements the first electrode 142 and the second electrode Μ# and the sound emitting element 14 The first electrode 142 and the second electrode 144 may be better fixed on the surface of the sound emitting element 14. In the embodiment, the conductive adhesive layer is a layer of silver paste. The first embodiment of the technical solution can be further improved A plurality of electrodes are disposed on the surface of the sound emitting element 14, the number of which is not limited, and it is only necessary to ensure that any two adjacent electrodes are spaced apart from each other, electrically connected to the sound emitting element 14, and are respectively associated with the signal input device 12 The two ends are electrically connected. It can be understood that the first electrode 142 and the second electrode 144 are optional structures because the sound emitting element 14 is disposed on the surface of the support structure 16. The signal input device 12 The sounding element 14 can be electrically connected directly through the wire 149 or the electrode lead, etc. It is only necessary to ensure that the signal input device 12 can input an electrical signal to the sounding element 14. Any: the signal input can be realized The manner of electrically connecting the device 12 to the sound emitting element 14 is within the scope of the present technical solution. The signal input by the signal input device 12 includes an alternating current signal or an audio electrical signal, etc. The signal input device 12 The first electrode 142 and the second electrode 144 are electrically connected by a wire 149, and an electrical signal is input to the sounding element 14 through the first electrode 142 and the second electrode 144. 1002092 When the above-mentioned sounding device 10 is used, the Taiding, non-reverse film has a small hot valley and a large specific surface area' and the carbon nanotubes in the nanometer are preferentially oriented, after inputting the signal, according to Without a change in strength (such as current intensity), a sounding element composed of at least one layer of carbon nanotube film "can uniformly heat the surrounding gaseous medium, rapidly rise and fall, produce periodic temperature changes, and surround The gas medium undergoes rapid heat exchange, so that the surrounding gas medium rapidly expands and contracts, emits a sound that can be perceived by the human ear, and the sound emitted has a wide frequency range and a good sounding effect. Therefore, in the embodiment of the technical solution, the sounding principle of the sounding element 14 is converted to "electrical sound", and has a wide range of applications. Fig. 5 is a graph showing the frequency response characteristic of the sounding device when a four-layer carbon nanotube film having a length and a width of 30 mils is used as the sounding element 14. As can be seen from FIG. 5, the sounding intensity of the sounding device 1 可达 can reach 105 dB sound pressure level 'the sounding frequency range is i Hz to 10,000 megahertz (ie, 1 Hz to 100 kHz), and the sounding device 1 has Better sounding effect. In addition, the sound emitting element 14 in the embodiment of the present technical solution has better toughness and mechanical strength. The sound emitting element 14 can be conveniently fabricated into the sounding device 10 of various shapes and sizes, and the sounding device 10 can be conveniently applied to various types. Among the devices that can be audible, such as audio, mobile phones, MP3, MP4, television, and other electronic fields and other sounding devices. Referring to FIG. 6 , the second embodiment of the present invention provides a sounding device 20 . The sounding device 20 includes a signal input device 22 , a sounding component 24 , a supporting structure 26 , a first electrode 242 , and a first Two electrodes 244, a third electrode 246, and a fourth electrode 248. 14 201002092 The sound emitting device 2 in the second embodiment of the present technical solution is basically the same as the sound generating device 1 in the first embodiment, except that the sound emitting element 24 in the second embodiment of the present technical solution surrounds the support. The structure 26 is arranged to form an annular sounding element 24. The shape of the support structure 26 is not limited and may be any three-dimensional structure. Preferably, the support structure 26 is a cube, a cone or a cylinder. In the embodiment of the technical solution, the support structure 26 is a cylinder. The first electrode 242, the second electrode 244, the third electrode 246, and the fourth electrode 248 are spaced apart from the surface of the sounding element 24 and electrically connected to the sound emitting element 24. Any two adjacent electrodes are electrically coupled to both ends of the signal input device 22, respectively, such that the sounding element 24 between adjacent electrodes is connected to the input signal. Specifically, two electrodes that are not adjacent are first connected by a wire 249 and then electrically connected to one end of the signal input device 22, and the remaining two electrodes are connected by a wire 249 and the other of the signal input device 22 - Terminal electrical connection. In the embodiment of the technical solution, the first electrode 242 and the third electrode 246 may be connected by a wire 249 and then electrically connected to one end of the signal input device 22, and then the second electrode 244 and the fourth electrode. The 248 is electrically connected to the other end of the signal input device 22 after being connected by a wire 249. The above connection method can realize the parallel connection of the nano-carbon film between adjacent electrodes. The carbon nanotube film after parallel connection has a lower resistance, which reduces the work (4). Moreover, the domain connection mode allows the sound emitting element 24 to have a large radiation area, and the sounding intensity is selected to achieve a surround sounding effect. 9 It can be understood that the present technical solution can set a plurality of electrodes, the number of which is not limited, and only two adjacent electrodes of the cancer protection are spaced apart and electrically connected with the sounding element 15 201002092 • 24, and respectively The two ends of the signal input device 22 can be electrically connected. Referring to FIG. 7, a third embodiment of the present invention provides a sounding device 30. The sounding device 3 includes a signal input device, a sounding component 34, a supporting structure 36, a first electrode 342, and a second electrode. Material 4. The sound emitting device 3 in the third embodiment of the present technical solution is basically the same as the U device 10 in the first embodiment, except that the sound emitting element 34 in the third embodiment of the present technical solution is partially disposed in the support structure. 36 surface 'and thus a sound space between the sound producing element 34 and the support structure %. The resulting sounding space can be - closed space or - open work space. The support structure 36 may be a v-shaped or lip-shaped structure or a cavity having a narrow opening π. When the support structure 36 is a cavity having a narrow opening, the vocal ride 3/n is narrowed by σ ^ ^ , + j to be placed in the cavity to form a Helmholtz resonator. The material of the support structure 36 is plastic, metal or glass. In the embodiment of the technical solution, the support structure 36 is a V-shaped structure. The sound emitting element 34 is disposed at both ends of the V-shaped structure, that is, from one end of the Η structure to the other end: the audible element 34 is partially suspended and disposed between the surface 34 and the support structure 36 A sound electrode 342 and a second electrode 344 are formed to be spaced apart from each other to form a surface of the first electrode 342 and the second electrode wire. Both ends of the signal input device 32 are electrically connected. The structure: the reflection of the sound element 34 is located in the support structure. Structure = The sounding effect of the sounding device 3 can be enhanced. ! Leather wave, 16 201002092 The sounding device provided by the embodiment of the present technical solution has the following advantages: the sounding element in the sounding device only includes the carbon nanotube thin, and does not require other complicated structures such as a magnet, so the sound is emitted. The structure of the device is relatively simple, which is advantageous for reducing the cost of the sounding device. Secondly, the sounding device uses the input signal to cause the temperature of the sounding element to change, so that the surrounding gas rapidly expands and contracts, thereby generating sound waves without a diaphragm, and the sounding device composed of the sounding element can be non-magnetic. Work under conditions. Third, since the carbon nanotube film has a small heat capacity and a large specific surface area, and the carbon nanotubes in the carbon nanotube film are preferentially oriented and partially carbon nanotubes: the alignment direction is from the first An electrode extends to the direction of the second electrode. After the wheeling signal, the sounding element composed of at least the carbon nanotube film can uniformly heat the surrounding gas according to the change of the signal intensity (such as the current intensity). Rise and fall, produce periodic temperature changes, perform rapid heat exchange, make the surrounding gas medium quickly expand and Ξ = width = human ear can perceive the sound 'and the frequency range of the sound emitted = (1HZ~100kHZ), sound The effect is better. In addition, when the thickness of the sounding element is relatively small, for example, less than 10 micrometers, the transparency of the sounding element is two, so that the formed sounding device is a transparent sounding device = directly mounted on various display devices, the surface of the mobile phone display 2 As a space-saving transparent sounding device. The mechanical strength and toughness of the carbon nanotubes composed of at least two nanometer carbon carbon nanotubes arranged in a preferred orientation, with good mechanical strength and sharpness. Good financial property..., various shapes and sizes of carbon nanotube film are prepared by the nanometer «set, and then conveniently 17 201002092 should == various fields. Since the carbon nanotube film is obtained by pulling from a direct nanometer stone anti-rule array, the carbon nanotube film has good viscosity, thereby facilitating preparation of a large-area sounding element and sounding device. . When the supporting structure of the field is a plane, the sounding element is directly disposed and the mouth is on the surface of the supporting structure, so the sounding element can withstand the strength, and the high signal is input to have a high sounding intensity; When the support, the structure, the v-shaped, the u-shaped structure or a cavity having a narrow opening, the sounding member is partially disposed on the surface of the support structure to form a pendulum space, and the support structure is reflective The sound waves emitted by the sounding element enhance the sounding effect of the sounding device. As described above, the present invention has indeed met the requirements of the invention patent, and the patent application is filed according to law. The above is only the preferred embodiment of the present invention, and the patent is not limited in this case. Equivalent modifications or variations made by those skilled in the art in light of the spirit of the invention are intended to be included within the scope of the following claims. [Circular Simple Description] Fig. 1 is a schematic structural view of a speaker in the prior art. Fig. 2 is a schematic view showing the structure of a sound generating device of a first embodiment of the present technical solution. Fig. 3 is a schematic view showing the structure of a carbon nanotube thinner in the sound generating device of the first embodiment of the present technical solution. Fig. 4 is a scanning electron micrograph of a carbon nanotube film in the sounding device of the first embodiment of the present technical solution. ', FIG. 5 is a frequency response of the sounding device of the first embodiment of the present technical solution. Fig. 6 is a schematic view showing the structure of a sound generating device of a second embodiment of the present technical solution. Fig. 7 is a schematic view showing the structure of a sound generating device of a third embodiment of the present technical solution. [Main component symbol description] Speaker 100 Voice coil 102 Magnet 104 Diaphragm 106 Sounding device 10, 20, 30 Signal input device 12, 22, 32 Sounding element 14, 24, 34 Support structure 16, 26, 36 Carbon nanotube film 141 carbon nanotube bundle 143 carbon nanotube 145 first electrode 142, 242, 342 second electrode 144, 244, 344 wire 149, 249, 349 third electrode 246 fourth electrode 248 19