TWI483623B - Speaker unit - Google Patents
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- TWI483623B TWI483623B TW101133853A TW101133853A TWI483623B TW I483623 B TWI483623 B TW I483623B TW 101133853 A TW101133853 A TW 101133853A TW 101133853 A TW101133853 A TW 101133853A TW I483623 B TWI483623 B TW I483623B
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Description
本發明是有關於一種揚聲器單體，且特別是有關於一種具有堆疊式開孔電極的揚聲器單體。This invention relates to a loudspeaker unit and, more particularly, to a loudspeaker unit having stacked aperture electrodes.
人類最直接的兩種感官反應是視覺與聽覺系統，因此長久以來，科學家們極力的發展與此相關的元件或系統技術。目前電聲揚聲器分類主要分為直接、間接輻射型，而驅動方式大概分為動圈式、壓電式及靜電式揚聲器。不論何種揚聲器，其構件主要可分為電極層、振膜與音腔。The two most immediate sensory responses of humans are the visual and auditory systems, so scientists have long struggled to develop component or system technologies related to this. At present, the classification of electroacoustic speakers is mainly divided into direct and indirect radiation types, and the driving methods are roughly classified into moving coil type, piezoelectric type and electrostatic type speakers. Regardless of the type of speaker, its components can be mainly divided into an electrode layer, a diaphragm and a sound chamber.
詳細而言，振膜可包含駐極體層，駐極體層經充電後在材料內部可產生駐電效果，開孔電極組適於接收訊號而與駐極體層的電荷產生吸引力或排斥力，以帶動振膜運動而產生聲音輸出。目前的設計多藉由單一開孔電極組接收訊號來驅動振膜振動，其聲音輸出較為單調而缺乏變化性。In detail, the diaphragm may comprise an electret layer, and the electret layer may generate a resident electricity effect inside the material after being charged, and the aperture electrode group is adapted to receive the signal and generate an attractive or repulsive force with the electret layer charge. Drive the diaphragm to produce a sound output. The current design mostly uses a single aperture electrode group to receive signals to drive the diaphragm vibration, and its sound output is monotonous and lacks variability.
圖1繪示習知一種傳統式靜電揚聲器系統(中國專利編號CN 101356852)，其在振膜36兩側設置了傾斜的定片32,34，定片32,34的傾斜角度使得結構加大，因而較為占據配置空間。此外，由於定片32,34的傾斜設計，造成定片32,34與振膜36距離不一，導致振膜36振動時受力不平均，在高速振動的情況下，可能因振膜36振動能量分配不均導致輸出之音質失真。1 shows a conventional electrostatic speaker system (Chinese Patent No. CN 101356852), which is provided with inclined stators 32, 34 on both sides of the diaphragm 36, and the inclination angles of the stators 32, 34 increase the structure. Therefore, it occupies more space for configuration. In addition, due to the inclined design of the stators 32, 34, the distance between the stators 32, 34 and the diaphragm 36 is different, resulting in uneven force when the diaphragm 36 vibrates, and may vibrate due to the diaphragm 36 in the case of high-speed vibration. Uneven energy distribution causes distortion in the output quality.
台灣專利編號TW 201038086揭露一種駐極式靜電揚 聲器，其在單一電極與單一振膜所夾持出的音腔空間中，排列有不同高度的支撐體，並藉由調整支撐體的高度以及與相鄰支撐體之間的距離，達成振膜受到電極驅動而振動時產生不同頻率的效果。然而，單一電極搭配不同高度的支撐體，亦可能會產生類似圖1所示之定片傾斜的問題，進而影響音質的表現。Taiwan Patent No. TW 201038086 discloses an electret type electrostatic Yang a sounder, in which a support body of different heights is arranged in a sound cavity space which is sandwiched by a single electrode and a single diaphragm, and the vibration is achieved by adjusting the height of the support body and the distance from the adjacent support body. The effect of different frequencies is produced when the film is driven by the electrodes to vibrate. However, a single electrode with a support of different heights may also produce a problem similar to the tilt of the stator shown in Figure 1, which in turn affects the performance of the sound quality.
本發明提供一種揚聲器單體，可清楚區隔出高頻與低頻的聲音輸出。The present invention provides a speaker unit that clearly distinguishes between high frequency and low frequency sound output.
本發明提出一種揚聲器單體，包括一駐極體振膜、至少一第一開孔電極層、至少一第一支撐件、至少一第二開孔電極層及至少一第二支撐件。第一開孔電極層設置於駐極體振膜的一側。第一支撐件支撐於第一開孔電極與駐極體振膜之間，且在第一開孔電極層與駐極體振膜之間圍繞出一第一腔室。第二開孔電極層設置於駐極體振膜的一側且與第一開孔電極層相堆疊。第二支撐件支撐於第二開孔電極層與駐極體振膜之間。第一支撐件及第二支撐件在第二開孔電極層與駐極體振膜之間圍繞出一第二腔室。第二腔室在駐極體振膜上的正投影面積大於第一腔室在駐極體振膜上的正投影面積，且第二開孔電極層與駐極體振膜之間的間距大於第一開孔電極層與駐極體振膜之間的間距，而使第一開孔電極層與駐極體振膜構成一高音頻結構，且第二開孔電極層與駐極體振膜構成一低音頻結構。The invention provides a speaker unit comprising an electret diaphragm, at least one first aperture electrode layer, at least one first support member, at least one second aperture electrode layer and at least one second support member. The first aperture electrode layer is disposed on one side of the electret diaphragm. The first support member is supported between the first aperture electrode and the electret diaphragm, and surrounds a first chamber between the first aperture electrode layer and the electret diaphragm. The second aperture electrode layer is disposed on one side of the electret diaphragm and stacked on the first aperture electrode layer. The second support member is supported between the second aperture electrode layer and the electret diaphragm. The first support member and the second support member surround a second chamber between the second aperture electrode layer and the electret diaphragm. The orthographic projection area of the second chamber on the electret diaphragm is larger than the orthographic projection area of the first chamber on the electret diaphragm, and the spacing between the second aperture electrode layer and the electret diaphragm is greater than a spacing between the first aperture electrode layer and the electret diaphragm, such that the first aperture electrode layer and the electret diaphragm form a high audio structure, and the second aperture electrode layer and the electret diaphragm Form a low audio structure.
在本發明之一實施例中，上述之至少一第一開孔電極層的數量為兩個，至少一第二開孔電極層的數量為兩個，兩第一開孔電極層分別配置於駐極體振膜相對的兩側。In one embodiment of the present invention, the number of the at least one first aperture electrode layer is two, and the number of the at least one second aperture electrode layer is two, and the two first aperture electrode layers are respectively disposed in the resident The opposite sides of the polar diaphragm.
在本發明之一實施例中，上述之兩第一開孔電極層夾設於兩第二開孔電極層之間。In an embodiment of the invention, the two first aperture electrode layers are sandwiched between the two second aperture electrode layers.
在本發明之一實施例中，上述之至少一第一支撐件的數量為兩個，至少一第二支撐件的數量為兩個，兩第一支撐件分別配置於駐極體振膜相對的兩表面以支撐兩第一開孔電極層，兩第二支撐件分別配置於駐極體振膜的兩表面以支撐兩第二開孔電極層。In an embodiment of the present invention, the number of the at least one first supporting member is two, and the number of the at least one second supporting member is two, and the two first supporting members are respectively disposed on the opposite side of the electret diaphragm The two surfaces support the two first opening electrode layers, and the two second supporting members are respectively disposed on both surfaces of the electret diaphragm to support the two second opening electrode layers.
在本發明之一實施例中，上述之第二開孔電極層具有一開口，且開口暴露第一開孔電極層。In an embodiment of the invention, the second aperture electrode layer has an opening, and the opening exposes the first aperture electrode layer.
在本發明之一實施例中，上述之第一支撐件呈環狀，第二支撐件呈環狀且環繞第一支撐件。In an embodiment of the invention, the first support member has an annular shape, and the second support member has an annular shape and surrounds the first support member.
在本發明之一實施例中，上述之第一開孔電極層電性連接於第二開孔電極層，第二開孔電極層用以連接一訊號源，訊號源輸入訊號至第二開孔電極層，且訊號源透過第二開孔電極層輸入訊號至第一開孔電極層。In an embodiment of the invention, the first aperture electrode layer is electrically connected to the second aperture electrode layer, the second aperture electrode layer is used for connecting to a signal source, and the signal source input signal is to the second aperture. The electrode layer, and the signal source inputs the signal to the first aperture electrode layer through the second aperture electrode layer.
在本發明之一實施例中，上述之第二開孔電極層的邊緣具有一凸部，凸部用以連接訊號源。In an embodiment of the invention, the edge of the second aperture electrode layer has a convex portion for connecting the signal source.
在本發明之一實施例中，上述之第二支撐件接觸駐極體振膜，第二支撐件的邊緣具有一凸部，凸部用以連接訊號源。In an embodiment of the invention, the second support member contacts the electret diaphragm, and the edge of the second support member has a convex portion for connecting the signal source.
在本發明之一實施例中，上述之揚聲器單體更包括一 導電元件，其中導電元件接觸駐極體振膜且用以連接訊號源。In an embodiment of the invention, the speaker unit further includes a A conductive element, wherein the conductive element contacts the electret diaphragm and is used to connect to the signal source.
基於上述，在本發明的揚聲器單體中，由於對應於第二開孔電極層的第二腔室在駐極體振膜的正投影面積較大而構成了較大的振動區域，因此第二開孔電極層及駐極體振膜接收訊號帶動駐極體振膜以低頻振動時具有較大振幅。第一開孔電極層與第二開孔電極層相堆疊，而使第二開孔電極層與駐極體振膜之間具有較大間距，故駐極體振膜的振動不會受到第二開孔電極層的干擾限制，而可使低頻振動表現更為明顯。換言之，藉由上述方式所造成的腔室的大小差異以及開孔電極層與駐極體振膜之間的間距差異，可使第一開孔電極層與駐極體振膜構成高音頻結構，且使第二開孔電極層與駐極體振膜構成低音頻結構，以清楚區隔出高頻與低頻的聲音輸出，提升聲音輸出的品質及變化性。Based on the above, in the speaker unit of the present invention, since the second chamber corresponding to the second aperture electrode layer has a large area of the projection of the electret diaphragm, a large vibration area is formed, so the second The aperture electrode layer and the electret diaphragm receiving signal drive the electret diaphragm to have a large amplitude when vibrating at a low frequency. The first aperture electrode layer and the second aperture electrode layer are stacked, and the second aperture electrode layer and the electret diaphragm have a large spacing, so the vibration of the electret diaphragm is not affected by the second The interference of the aperture electrode layer limits the performance of the low frequency vibration. In other words, by the difference in the size of the chamber caused by the above manner and the difference in the spacing between the aperture electrode layer and the electret diaphragm, the first aperture electrode layer and the electret diaphragm can form a high audio structure. The second aperture electrode layer and the electret diaphragm form a low-frequency structure to clearly separate the high-frequency and low-frequency sound output, thereby improving the quality and variability of the sound output.
為讓本發明之上述特徵和優點能更明顯易懂，下文特舉實施例，並配合所附圖式作詳細說明如下。The above described features and advantages of the present invention will be more apparent from the following description.
圖2為本發明一實施例之揚聲器單體的立體圖。圖3為圖2之揚聲器單體沿I-I線的剖視圖。圖3為圖2之揚聲器單體的分解圖。請參考圖2至圖4，本實施例的揚聲器單體100可應用於耳機、外放音響或其它音訊輸出裝置，本發明不對此加以限制。揚聲器單體100包括一駐極 體振膜110、至少一第一開孔電極層122(繪示為兩個)、至少一第一支撐件142(繪示為兩個)、至少一第二開孔電極層132(繪示為兩個)及至少一第二支撐件144(繪示為兩個)。2 is a perspective view of a speaker unit in accordance with an embodiment of the present invention. Figure 3 is a cross-sectional view of the speaker unit of Figure 2 taken along line I-I. Figure 3 is an exploded view of the speaker unit of Figure 2. Referring to FIG. 2 to FIG. 4, the speaker unit 100 of the present embodiment can be applied to an earphone, an external sound or other audio output device, which is not limited by the present invention. The speaker unit 100 includes an electret The body diaphragm 110, the at least one first aperture electrode layer 122 (shown as two), the at least one first support member 142 (shown as two), and the at least one second aperture electrode layer 132 (shown as Two) and at least one second support member 144 (shown as two).
兩第一開孔電極層122分別設置於駐極體振膜110相對的兩側。兩第二開孔電極層132分別設置於駐極體振膜110相對的兩側。兩第一支撐件142分別配置於駐極體振膜110相對的兩表面以支撐兩第一開孔電極層122，兩第二支撐件144分別配置於駐極體振膜110的所述兩表面以支撐兩第二開孔電極層132。The two first aperture electrode layers 122 are respectively disposed on opposite sides of the electret diaphragm 110. The two second aperture electrode layers 132 are respectively disposed on opposite sides of the electret diaphragm 110. The two first supporting members 142 are respectively disposed on opposite surfaces of the electret diaphragm 110 to support the two first opening electrode layers 122. The two second supporting members 144 are respectively disposed on the two surfaces of the electret diaphragm 110. To support the two second aperture electrode layers 132.
圖5為圖3之揚聲器單體的部分構件俯視圖。為使圖式較為清楚，圖5僅繪示出圖3之駐極體振膜110、第一支撐件142及第二支撐件144。請參考圖3至圖5，在本實施例中，各第一支撐件142呈環狀，各第二支撐件144呈環狀且環繞對應之第一支撐件142。藉此，各第一支撐件142在各第一開孔電極層122與駐極體振膜110之間圍繞出一第一腔室110a，且各第一支撐件142及各第二支撐件144在各第二開孔電極層132與駐極體振膜110之間圍繞出一第二腔室110b。駐極體振膜110被第一開孔電極層122驅動時可振動各第一腔室110a內的空氣產生聲音，且駐極體振膜110被第二開孔電極層132驅動時可振動各第二腔室110b內的空氣產生聲音。Figure 5 is a plan view of a portion of the components of the loudspeaker unit of Figure 3. In order to make the drawings clearer, FIG. 5 only shows the electret diaphragm 110, the first support member 142 and the second support member 144 of FIG. Referring to FIG. 3 to FIG. 5 , in the embodiment, each of the first support members 142 is annular, and each of the second support members 144 is annular and surrounds the corresponding first support member 142 . Thereby, each first support member 142 surrounds a first chamber 110a between each of the first aperture electrode layers 122 and the electret diaphragm 110, and each of the first support members 142 and the second support members 144 A second chamber 110b is surrounded between each of the second aperture electrode layers 132 and the electret diaphragm 110. When the electret diaphragm 110 is driven by the first aperture electrode layer 122, the air in each of the first chambers 110a can vibrate to generate sound, and the electret diaphragm 110 can be vibrated when driven by the second aperture electrode layer 132. The air in the second chamber 110b produces sound.
在本實施例中，由第一支撐件142所圍繞出的第一腔室110a在駐極體振膜110的正投影面積較小，而由第一支撐件142及第二支撐件144所圍繞出的第二腔室110b在駐 極體振膜110的正投影面積較大。此外，請參考圖3，兩第一開孔電極層122分別與兩第二開孔電極層132相堆疊，而使各第二開孔電極層132與駐極體振膜110之間的間距D2大於各第一開孔電極層122與駐極體振膜110之間的間距D1。In the present embodiment, the first cavity 110a surrounded by the first support member 142 is smaller in the orthographic projection area of the electret diaphragm 110, and is surrounded by the first support member 142 and the second support member 144. The second chamber 110b is in the station The orthographic projection area of the polar body diaphragm 110 is large. In addition, referring to FIG. 3, the two first aperture electrode layers 122 are respectively stacked with the two second aperture electrode layers 132, and the spacing between the second aperture electrode layers 132 and the electret diaphragm 110 is D2. It is larger than the distance D1 between each of the first aperture electrode layers 122 and the electret diaphragms 110.
在上述配置方式之下，由於對應於第二開孔電極層132的第二腔室110b在駐極體振膜110的正投影面積較大而構成了較大的振動區域，因此第二開孔電極層132及駐極體振膜110接收訊號帶動駐極體振膜110以低頻振動時具有較大振幅。第一開孔電極層122與第二開孔電極層132相堆疊，而使第二開孔電極層132與駐極體振膜110之間具有較大間距，故駐極體振膜110的振動不會受到第二開孔電極層132的干擾限制，而可使低頻振動表現更為明顯。換言之，藉由上述方式所造成的腔室的大小差異以及開孔電極層與駐極體振膜之間的間距差異，可使第一開孔電極層122與駐極體振膜110構成高音頻結構，且使第二開孔電極層132與駐極體振膜110構成低音頻結構，以清楚區隔出高頻與低頻的聲音輸出，提升聲音輸出的品質及變化性。Under the above configuration, since the second chamber 110b corresponding to the second aperture electrode layer 132 has a large area of the orthographic projection of the electret diaphragm 110 to form a large vibration area, the second aperture is formed. The electrode layer 132 and the electret diaphragm 110 receive a signal to drive the electret diaphragm 110 to have a large amplitude when vibrating at a low frequency. The first aperture electrode layer 122 and the second aperture electrode layer 132 are stacked, and the second aperture electrode layer 132 and the electret diaphragm 110 have a large spacing, so the vibration of the electret diaphragm 110 It is not limited by the interference of the second aperture electrode layer 132, and the low frequency vibration performance can be more obvious. In other words, the difference between the size of the chamber caused by the above manner and the difference in the spacing between the aperture electrode layer and the electret diaphragm can make the first aperture electrode layer 122 and the electret diaphragm 110 form a high audio. The second aperture electrode layer 132 and the electret diaphragm 110 form a low-frequency structure to clearly separate the high-frequency and low-frequency sound output, thereby improving the quality and variability of the sound output.
在本實施例中，兩第一開孔電極層122夾設於兩第二開孔電極層132之間，兩第二開孔電極層132分別接觸兩第一開孔電極層122，以使各第一開孔電極層122電性連接於對應之第二開孔電極層132。各第一開孔電極層122具有多個開孔122a且各第二開孔電極層132具有多個開孔 132a，使駐極體振膜110振動所產生的聲音能夠透過開孔122a及開孔132a輸出。此外，各第二開孔電極132具有一開口132b，且開口132b暴露對應之第一開孔電極層122，使駐極體振膜110在對應於各第一開孔電極層122之處振動所產生的聲音能夠透過開口132b輸出。In this embodiment, the two first aperture electrode layers 122 are sandwiched between the two second aperture electrode layers 132, and the two second aperture electrode layers 132 respectively contact the two first aperture electrode layers 122. The first aperture electrode layer 122 is electrically connected to the corresponding second aperture electrode layer 132. Each of the first aperture electrode layers 122 has a plurality of openings 122a and each of the second aperture electrode layers 132 has a plurality of openings 132a, the sound generated by the vibration of the electret diaphragm 110 can be output through the opening 122a and the opening 132a. In addition, each of the second aperture electrodes 132 has an opening 132b, and the opening 132b exposes the corresponding first aperture electrode layer 122, so that the electret diaphragm 110 vibrates at a position corresponding to each of the first aperture electrode layers 122. The generated sound can be output through the opening 132b.
如圖3所示，在本實施例中，各第一支撐件142具有厚度T1，以使駐極體振膜110與第一開孔電極層122之間具有等同於厚度T1的間距D1，而各第二支撐件144具有厚度T2，以使駐極體振膜110與第二開孔電極層132之間具有等同於厚度T2的間距D2。各第一支撐件142的所述厚度T1小於各第二支撐件144的所述厚度T2，以使駐極體振膜110與第一開孔電極層122之間的間距D1小於駐極體振膜110與第二開孔電極層132之間的間距D2，藉以構成上述之對應於第一開孔電極層122的高音頻結構及對應於第二開孔電極層132的低音頻結構。As shown in FIG. 3, in the present embodiment, each of the first support members 142 has a thickness T1 such that the electret diaphragm 110 and the first aperture electrode layer 122 have a pitch D1 equivalent to the thickness T1. Each of the second support members 144 has a thickness T2 such that the electret diaphragm 110 and the second apertured electrode layer 132 have a pitch D2 equivalent to the thickness T2. The thickness T1 of each of the first supporting members 142 is smaller than the thickness T2 of each of the second supporting members 144, so that the distance D1 between the electret diaphragm 110 and the first opening electrode layer 122 is smaller than the electret vibration. The distance D2 between the film 110 and the second aperture electrode layer 132 is formed to constitute the high audio structure corresponding to the first aperture electrode layer 122 and the low audio structure corresponding to the second aperture electrode layer 132.
圖8為圖3之第二開孔電極層連接訊號源的方塊圖。請參考圖3及圖8，在本實施例中，各第二開孔電極層132用以連接一訊號源50。訊號源50可輸入訊號至第二開孔電極層132，以使第二開孔電極層132驅使駐極體振膜110振動。此外，由於二開孔電極層132電性連接於第一開孔電極層122，因此訊號源50可透過各第二開孔電極層132輸入訊號至對應之第一開孔電極層122，以使第一開孔電極層122驅使駐極體振膜110振動。Figure 8 is a block diagram of the second aperture electrode layer of Figure 3 connected to the signal source. Referring to FIG. 3 and FIG. 8 , in the embodiment, each of the second aperture electrode layers 132 is used to connect to a signal source 50 . The signal source 50 can input a signal to the second aperture electrode layer 132 to cause the second aperture electrode layer 132 to drive the electret diaphragm 110 to vibrate. In addition, since the two-hole electrode layer 132 is electrically connected to the first aperture electrode layer 122, the signal source 50 can input signals to the corresponding first aperture electrode layer 122 through the second aperture electrode layer 132, so that The first aperture electrode layer 122 drives the electret diaphragm 110 to vibrate.
請參考圖2及圖4，在本實施例中，各第二開孔電極 層132的邊緣具有一凸部132c，用以連接上述訊號源50。此外，第二支撐件144接觸駐極體振膜110且第二支撐件144的邊緣具有一凸部144a。凸部144a用以連接訊號源50，使駐極體振膜110可透過第二支撐件144的凸部144a連接訊號源50。詳細而言，駐極體振膜110可包括駐極體層與導電層，第二支撐件144用以電性連接駐極體振膜110的導電層，使駐極體振膜110的導電層透過第二支撐件144接收來自訊號源50的訊號。當訊號源50輸入訊號至第一開孔電極層122、第二開孔電極層132及駐極體振膜110的導電層時，駐極體振膜110之帶有電荷的駐極體層會受到電性吸引或電性排斥，使駐極體振膜110產生振動。Please refer to FIG. 2 and FIG. 4 . In this embodiment, each of the second aperture electrodes The edge of the layer 132 has a convex portion 132c for connecting the signal source 50. Further, the second support member 144 contacts the electret diaphragm 110 and the edge of the second support member 144 has a convex portion 144a. The convex portion 144a is connected to the signal source 50, so that the electret diaphragm 110 can be connected to the signal source 50 through the convex portion 144a of the second support member 144. In detail, the electret diaphragm 110 may include an electret layer and a conductive layer, and the second support member 144 is configured to electrically connect the conductive layer of the electret diaphragm 110 to transmit the conductive layer of the electret diaphragm 110. The second support member 144 receives the signal from the signal source 50. When the signal source 50 inputs signals to the conductive layers of the first aperture electrode layer 122, the second aperture electrode layer 132, and the electret diaphragm 110, the charged electret layer of the electret diaphragm 110 is subjected to Electrical attraction or electrical repulsion causes the electret diaphragm 110 to vibrate.
在上述實施例中，第一開孔電極層122、第二開孔電極層132、第一支撐件142及第二支撐件144的數量皆為兩個，然本發明不以此為限，第一開孔電極層、第二開孔電極層、第一支撐件及第二支撐件的數量可皆為一個，以下藉由圖式對此加以說明。In the above embodiment, the number of the first aperture electrode layer 122, the second aperture electrode layer 132, the first support member 142, and the second support member 144 are two, but the invention is not limited thereto. The number of one of the aperture electrode layer, the second aperture electrode layer, the first support member and the second support member may be one, which will be described below with reference to the drawings.
圖7為本發明另一實施例之揚聲器單體的剖視圖。圖8為圖7之揚聲器單體的分解圖。請參考圖7及圖8，本實施例的揚聲器單體200可應用於耳機、外放音響或其它音訊輸出裝置，本發明不對此加以限制。揚聲器單體200包括一駐極體振膜210、一第一開孔電極層222、一第一支撐件242、一第二開孔電極層232及一第二支撐件244。Figure 7 is a cross-sectional view of a speaker unit in accordance with another embodiment of the present invention. Figure 8 is an exploded view of the speaker unit of Figure 7. Referring to FIG. 7 and FIG. 8 , the speaker unit 200 of the embodiment can be applied to an earphone, an external sound or other audio output device, which is not limited by the present invention. The speaker unit 200 includes an electret diaphragm 210, a first aperture electrode layer 222, a first support member 242, a second aperture electrode layer 232, and a second support member 244.
第一開孔電極層222設置於駐極體振膜210的一側。第二開孔電極層232設置於駐極體振膜210的一側。第一 支撐件242支撐於駐極體振膜210與第一開孔電極層222之間，第二支撐件244支撐於駐極體振膜210與第二開孔電極層232之間。The first aperture electrode layer 222 is disposed on one side of the electret diaphragm 210. The second aperture electrode layer 232 is disposed on one side of the electret diaphragm 210. the first The support member 242 is supported between the electret diaphragm 210 and the first aperture electrode layer 222, and the second support member 244 is supported between the electret diaphragm 210 and the second aperture electrode layer 232.
圖9為圖7之揚聲器單體的部分構件俯視圖。為使圖式較為清楚，圖9僅繪示出圖7之駐極體振膜210、第一支撐件242及第二支撐件244。請參考圖7至圖9，在本實施例中，第一支撐件242呈環狀，第二支撐件244呈環狀且環繞第一支撐件242。藉此，第一支撐件242在第一開孔電極層222與駐極體振膜210之間圍繞出一第一腔室210a，且第一支撐件242及第二支撐件244在第二開孔電極層232與駐極體振膜210之間圍繞出一第二腔室210b。駐極體振膜210被第一開孔電極層222驅動時可振動第一腔室210a內的空氣產生聲音，且駐極體振膜210被第二開孔電極層232驅動時可振動第二腔室210b內的空氣產生聲音。Figure 9 is a plan view of a portion of the components of the speaker unit of Figure 7. In order to make the drawings clearer, FIG. 9 only shows the electret diaphragm 210, the first support member 242 and the second support member 244 of FIG. Referring to FIG. 7 to FIG. 9 , in the embodiment, the first support member 242 is annular, and the second support member 244 is annular and surrounds the first support member 242 . Thereby, the first support member 242 surrounds a first chamber 210a between the first aperture electrode layer 222 and the electret diaphragm 210, and the first support member 242 and the second support member 244 are opened second. A second chamber 210b is surrounded between the hole electrode layer 232 and the electret diaphragm 210. When the electret diaphragm 210 is driven by the first aperture electrode layer 222, the air in the first chamber 210a can vibrate to generate sound, and the electret diaphragm 210 can vibrate when driven by the second aperture electrode layer 232. The air in the chamber 210b produces sound.
在本實施例中，由第一支撐件242所圍繞出的第一腔室210a在駐極體振膜210的正投影面積較小，而由第一支撐件242及第二支撐件244所圍繞出的第二腔室210b在駐極體振膜210的正投影面積較大。此外，請參考圖7，第一開孔電極層222與第二開孔電極層232相堆疊，而使第二開孔電極層232與駐極體振膜210之間的間距D4大於第一開孔電極層222與駐極體振膜210之間的間距D3。In the present embodiment, the first cavity 210a surrounded by the first support member 242 is smaller in the orthographic projection area of the electret diaphragm 210, and is surrounded by the first support member 242 and the second support member 244. The second chamber 210b is larger in the orthographic projection area of the electret diaphragm 210. In addition, referring to FIG. 7 , the first aperture electrode layer 222 and the second aperture electrode layer 232 are stacked, and the spacing D4 between the second aperture electrode layer 232 and the electret diaphragm 210 is greater than the first opening. The distance D3 between the hole electrode layer 222 and the electret diaphragm 210.
在上述配置方式之下，由於對應於第二開孔電極層232的第二腔室210b在駐極體振膜210的正投影面積較大 而構成了較大的振動區域，因此第二開孔電極層232及駐極體振膜210接收訊號帶動駐極體振膜210以低頻振動時具有較大振幅。第一開孔電極層222與第二開孔電極層232相堆疊，而使第二開孔電極層232與駐極體振膜210之間具有較大間距，故駐極體振膜210的振動不會受到第二開孔電極層232的干擾限制，而可使低頻振動表現更為明顯。換言之，藉由上述方式所造成的腔室的大小差異以及開孔電極層與駐極體振膜之間的間距差異，可使第一開孔電極層222與駐極體振膜210構成高音頻結構，且使第二開孔電極層232與駐極體振膜210構成低音頻結構，以清楚區隔出高頻與低頻的聲音輸出，提升聲音輸出的品質及變化性。Under the above configuration, since the second cavity 210b corresponding to the second aperture electrode layer 232 has a larger orthographic projection area of the electret diaphragm 210 The large aperture region is formed, so that the second aperture electrode layer 232 and the electret diaphragm 210 receive the signal to drive the electret diaphragm 210 to have a large amplitude when vibrating at a low frequency. The first aperture electrode layer 222 and the second aperture electrode layer 232 are stacked, and the second aperture electrode layer 232 and the electret diaphragm 210 have a large spacing, so the vibration of the electret diaphragm 210 It is not limited by the interference of the second aperture electrode layer 232, and the low frequency vibration performance can be more apparent. In other words, the difference between the size of the chamber caused by the above manner and the difference in the spacing between the aperture electrode layer and the electret diaphragm can make the first aperture electrode layer 222 and the electret diaphragm 210 form a high audio. The second aperture electrode layer 232 and the electret diaphragm 210 form a low-frequency structure to clearly separate the high-frequency and low-frequency sound output, thereby improving the quality and variability of the sound output.
在本實施例中，第二開孔電極層232接觸第一開孔電極層222，以使第一開孔電極層222電性連接於第二開孔電極層232。第一開孔電極層222具有多個開孔222a且第二開孔電極層232具有多個開孔232a，使駐極體振膜210振動所產生的聲音能夠透過開孔222a及開孔232a輸出。此外，第二開孔電極232具有一開口232b，且開口232b暴露第一開孔電極層222，使駐極體振膜210在對應於第一開孔電極層222之處振動所產生的聲音能夠透過開口232b輸出。In the embodiment, the second aperture electrode layer 232 contacts the first aperture electrode layer 222 to electrically connect the first aperture electrode layer 222 to the second aperture electrode layer 232. The first aperture electrode layer 222 has a plurality of openings 222a, and the second aperture electrode layer 232 has a plurality of openings 232a, so that the sound generated by the vibration of the electret diaphragm 210 can be output through the aperture 222a and the aperture 232a. . In addition, the second aperture electrode 232 has an opening 232b, and the opening 232b exposes the first aperture electrode layer 222, so that the sound generated by the electret diaphragm 210 vibrating at the position corresponding to the first aperture electrode layer 222 can Output through the opening 232b.
如圖7所示，在本實施例中，第一支撐件242具有厚度T3，以使駐極體振膜210與第一開孔電極層222之間具有等同於厚度T3的間距D3，而第二支撐件244具有厚度 T4，以使駐極體振膜210與第二開孔電極層232之間具有等同於厚度T4的間距D4。第一支撐件242的所述厚度T3小於第二支撐件244的所述厚度T4，以使駐極體振膜210與第一開孔電極層222之間的間距D3小於駐極體振膜210與第二開孔電極層232之間的間距D4，藉以構成上述之對應於第一開孔電極層222的高音頻結構及對應於第二開孔電極層232的低音頻結構。As shown in FIG. 7, in the present embodiment, the first support member 242 has a thickness T3 such that the electret diaphragm 210 and the first aperture electrode layer 222 have a pitch D3 equivalent to the thickness T3, and Two support members 244 have a thickness T4 is such that the electret diaphragm 210 and the second aperture electrode layer 232 have a pitch D4 equal to the thickness T4. The thickness T3 of the first support member 242 is smaller than the thickness T4 of the second support member 244 such that the spacing D3 between the electret diaphragm 210 and the first aperture electrode layer 222 is smaller than the electret diaphragm 210 The spacing D4 between the second aperture electrode layer 232 and the second aperture electrode layer 232 constitutes a high audio structure corresponding to the first aperture electrode layer 222 and a low audio structure corresponding to the second aperture electrode layer 232.
圖10為圖7之第二開孔電極層連接訊號源的方塊圖。請參考圖7及圖10，在本實施例中，第二開孔電極層232用以連接一訊號源50’。訊號源50’可輸入訊號至第二開孔電極層232，以使第二開孔電極層232驅使駐極體振膜210振動。此外，由於二開孔電極層232電性連接於第一開孔電極層222，因此訊號源50’可透過第二開孔電極層232輸入訊號至第一開孔電極層222，以使第一開孔電極層222驅使駐極體振膜210振動。Figure 10 is a block diagram of the second aperture electrode layer of Figure 7 connected to the signal source. Referring to FIG. 7 and FIG. 10, in the embodiment, the second aperture electrode layer 232 is used to connect to a signal source 50'. The signal source 50' can input a signal to the second aperture electrode layer 232 to cause the second aperture electrode layer 232 to drive the electret diaphragm 210 to vibrate. In addition, since the two-hole electrode layer 232 is electrically connected to the first aperture electrode layer 222, the signal source 50' can input a signal to the first aperture electrode layer 222 through the second aperture electrode layer 232 to make the first The aperture electrode layer 222 drives the electret diaphragm 210 to vibrate.
請參考圖7及圖8，在本實施例中，第二開孔電極層232的邊緣具有一凸部232c，用以連接上述訊號源50’。詳細而言，駐極體振膜210可包括駐極體層與導電層，揚聲器單體200更包括一導電元件250，導電元件250例如為銅片並接觸駐極體振膜210，且用以連接訊號源50’，使駐極體振膜210的導電層透過導電元件250接收來自訊號源50’的訊號。當訊號源50’輸入訊號至第一開孔電極層222、第二開孔電極層232及駐極體振膜210的導電層時，駐極體振膜210之帶有電荷的駐極體層會受到電性吸引或 電性排斥，使駐極體振膜210產生振動。在其它實施例中，導電元件250除了可為銅片之外，亦可為其它適當材質之導電元件，本發明不對此加以限制。此外，亦可將圖3所示的第二支撐件144結合於圖7之揚聲器單體200並接觸駐極體振膜210，以取代該導電元件250，使駐極體振膜210透過第二支撐件144的凸部144a連接訊號源50’。Referring to FIG. 7 and FIG. 8, in the embodiment, the edge of the second aperture electrode layer 232 has a convex portion 232c for connecting the signal source 50'. In detail, the electret diaphragm 210 may include an electret layer and a conductive layer, and the speaker unit 200 further includes a conductive element 250. The conductive element 250 is, for example, a copper sheet and contacts the electret diaphragm 210, and is connected to The signal source 50' causes the conductive layer of the electret diaphragm 210 to receive the signal from the signal source 50' through the conductive element 250. When the signal source 50' inputs signals to the conductive layers of the first aperture electrode layer 222, the second aperture electrode layer 232, and the electret diaphragm 210, the charged electret layer of the electret diaphragm 210 Electrically attracted or Electrical repulsion causes the electret diaphragm 210 to vibrate. In other embodiments, the conductive member 250 may be a conductive member of other suitable materials in addition to the copper sheet, which is not limited by the present invention. In addition, the second support member 144 shown in FIG. 3 can also be coupled to the speaker unit 200 of FIG. 7 and contact the electret diaphragm 210 to replace the conductive member 250 to pass the electret diaphragm 210 through the second. The convex portion 144a of the support member 144 is connected to the signal source 50'.
綜上所述，在本發明的揚聲器單體中，由於對應於第二開孔電極層的第二腔室在駐極體振膜的正投影面積較大而構成了較大的振動區域，因此第二開孔電極層及駐極體振膜接收訊號帶動駐極體振膜以低頻振動時具有較大振幅。第一開孔電極層與第二開孔電極層相堆疊，而使第二開孔電極層與駐極體振膜之間具有較大間距，故駐極體振膜的振動不會受到第二開孔電極層的干擾限制，而可使低頻振動表現更為明顯。換言之，藉由上述方式所造成的腔室的大小差異以及開孔電極層與駐極體振膜之間的間距差異，可使第一開孔電極層與駐極體振膜構成高音頻結構，且使第二開孔電極層與駐極體振膜構成低音頻結構，以清楚區隔出高頻與低頻的聲音輸出，提升聲音輸出的品質及變化性。In summary, in the speaker unit of the present invention, since the second chamber corresponding to the second aperture electrode layer has a large area of the projection of the electret diaphragm, a large vibration area is formed. The second aperture electrode layer and the electret diaphragm receive signal drive the electret diaphragm to have a large amplitude when vibrating at a low frequency. The first aperture electrode layer and the second aperture electrode layer are stacked, and the second aperture electrode layer and the electret diaphragm have a large spacing, so the vibration of the electret diaphragm is not affected by the second The interference of the aperture electrode layer limits the performance of the low frequency vibration. In other words, by the difference in the size of the chamber caused by the above manner and the difference in the spacing between the aperture electrode layer and the electret diaphragm, the first aperture electrode layer and the electret diaphragm can form a high audio structure. The second aperture electrode layer and the electret diaphragm form a low-frequency structure to clearly separate the high-frequency and low-frequency sound output, thereby improving the quality and variability of the sound output.
雖然本發明已以實施例揭露如上，然其並非用以限定本發明，任何所屬技術領域中具有通常知識者，在不脫離本發明之精神和範圍內，當可作些許之更動與潤飾，故本發明之保護範圍當視後附之申請專利範圍所界定者為準。Although the present invention has been disclosed in the above embodiments, it is not intended to limit the invention, and any one of ordinary skill in the art can make some modifications and refinements without departing from the spirit and scope of the invention. The scope of the invention is defined by the scope of the appended claims.
50、50’‧‧‧訊號源50, 50' ‧ ‧ source
100、200‧‧‧揚聲器單體100, 200‧‧‧ speaker unit
110、210‧‧‧駐極體振膜110, 210‧‧‧ electret diaphragm
110a、210a‧‧‧第一腔室110a, 210a‧‧‧ first chamber
110b、210b‧‧‧第二腔室110b, 210b‧‧‧ second chamber
122、222‧‧‧第一開孔電極層122, 222‧‧‧ first aperture electrode layer
122a、132a、222a、232a‧‧‧開孔Openings 122a, 132a, 222a, 232a‧‧
132、232‧‧‧第二開孔電極層132, 232‧‧‧ second aperture electrode layer
132b、232b‧‧‧開口132b, 232b‧‧‧ openings
132c、144a、232c‧‧‧凸部132c, 144a, 232c‧‧ ‧ convex
142、242‧‧‧第一支撐件142, 242‧‧‧ first support
144、244‧‧‧第二支撐件144, 244‧‧‧second support
250‧‧‧導電元件250‧‧‧Conducting components
D1、D2、D3、D4‧‧‧間距D1, D2, D3, D4‧‧‧ spacing
T1、T2、T3、T4‧‧‧厚度T1, T2, T3, T4‧‧‧ thickness
圖1繪示習知一種傳統式靜電揚聲器系統。FIG. 1 illustrates a conventional electrostatic speaker system.
圖2為本發明一實施例之揚聲器單體的立體圖。2 is a perspective view of a speaker unit in accordance with an embodiment of the present invention.
圖3為圖2之揚聲器單體沿I-I線的剖視圖。Figure 3 is a cross-sectional view of the speaker unit of Figure 2 taken along line I-I.
圖4為圖2之揚聲器單體的分解圖。4 is an exploded view of the speaker unit of FIG. 2.
圖5為圖3之揚聲器單體的部分構件俯視圖。Figure 5 is a plan view of a portion of the components of the loudspeaker unit of Figure 3.
圖6為圖3之第二開孔電極層連接訊號源的方塊圖。FIG. 6 is a block diagram of the second aperture electrode layer of FIG. 3 connected to the signal source.
圖7為本發明另一實施例之揚聲器單體的剖視圖。Figure 7 is a cross-sectional view of a speaker unit in accordance with another embodiment of the present invention.
圖8為圖7之揚聲器單體的分解圖。Figure 8 is an exploded view of the speaker unit of Figure 7.
圖9為圖7之揚聲器單體的部分構件俯視圖。Figure 9 is a plan view of a portion of the components of the speaker unit of Figure 7.
圖10為圖7之第二開孔電極層連接訊號源的方塊圖。Figure 10 is a block diagram of the second aperture electrode layer of Figure 7 connected to the signal source.
100‧‧‧揚聲器單體100‧‧‧Speaker unit
110‧‧‧駐極體振膜110‧‧‧Electret diaphragm
110a‧‧‧第一腔室110a‧‧‧ first chamber
110b‧‧‧第二腔室110b‧‧‧ second chamber
122‧‧‧第一開孔電極層122‧‧‧First opening electrode layer
132‧‧‧第二開孔電極層132‧‧‧Second opening electrode layer
132b‧‧‧開口132b‧‧‧ openings
142‧‧‧第一支撐件142‧‧‧First support
144‧‧‧第二支撐件144‧‧‧second support
144a‧‧‧凸部144a‧‧‧ convex
D1、D2‧‧‧間距D1, D2‧‧‧ spacing
T1、T2‧‧‧厚度T1, T2‧‧‧ thickness
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW101133853A TWI483623B (en) | 2012-09-14 | 2012-09-14 | Speaker unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW101133853A TWI483623B (en) | 2012-09-14 | 2012-09-14 | Speaker unit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| TW201412142A TW201412142A (en) | 2014-03-16 |
| TWI483623B true TWI483623B (en) | 2015-05-01 |
Family
ID=50821000
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| TW101133853A TWI483623B (en) | 2012-09-14 | 2012-09-14 | Speaker unit |
Country Status (1)
| Country | Link |
|---|---|
| TW (1) | TWI483623B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1352407A (en) * | 1970-07-14 | 1974-05-08 | Pioneer Electronic Corp | Electrostatic electroacoustic transducer |
| TW200401578A (en) * | 2002-05-20 | 2004-01-16 | New Transducers Ltd | Transducer |
| TW200952510A (en) * | 2008-06-05 | 2009-12-16 | Ind Tech Res Inst | Flexible electret transducer assembly, speaker and method of making a flexible electret transducer assembly |
| US20100027814A1 (en) * | 2008-08-01 | 2010-02-04 | Industrial Technology Research Institute | Speaker devices |
| TW201018254A (en) * | 2008-10-24 | 2010-05-01 | Ind Tech Res Inst | Flat speaker unit and speaker device therewith |
| TW201116075A (en) * | 2009-10-19 | 2011-05-01 | Ind Tech Res Inst | Flat speaker structure |
| TW201132136A (en) * | 2010-03-08 | 2011-09-16 | Taiwan Electrets Electronics Co Ltd | Structure of flexible speaker |
| TW201218987A (en) * | 2010-11-12 | 2012-05-16 | Taiwan Electrets Electronics Co Ltd | Picture-exhibting device with audio system |
-
2012
- 2012-09-14 TW TW101133853A patent/TWI483623B/en not_active IP Right Cessation
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1352407A (en) * | 1970-07-14 | 1974-05-08 | Pioneer Electronic Corp | Electrostatic electroacoustic transducer |
| TW200401578A (en) * | 2002-05-20 | 2004-01-16 | New Transducers Ltd | Transducer |
| TW200952510A (en) * | 2008-06-05 | 2009-12-16 | Ind Tech Res Inst | Flexible electret transducer assembly, speaker and method of making a flexible electret transducer assembly |
| US20100027814A1 (en) * | 2008-08-01 | 2010-02-04 | Industrial Technology Research Institute | Speaker devices |
| TW201008303A (en) * | 2008-08-01 | 2010-02-16 | Ind Tech Res Inst | Structure of a speaker unit |
| TW201018254A (en) * | 2008-10-24 | 2010-05-01 | Ind Tech Res Inst | Flat speaker unit and speaker device therewith |
| TW201116075A (en) * | 2009-10-19 | 2011-05-01 | Ind Tech Res Inst | Flat speaker structure |
| TW201132136A (en) * | 2010-03-08 | 2011-09-16 | Taiwan Electrets Electronics Co Ltd | Structure of flexible speaker |
| TW201218987A (en) * | 2010-11-12 | 2012-05-16 | Taiwan Electrets Electronics Co Ltd | Picture-exhibting device with audio system |
Also Published As
| Publication number | Publication date |
|---|---|
| TW201412142A (en) | 2014-03-16 |
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