200530922 九、發明說明： 【發明所屬之技術領域】 本發明關於一種聲波接觸檢測裝置，例如超音波觸 控面板。 【先前技術】 超音波聲波接觸檢測裝置現在已廣泛使用。其應用 的範例包含個人電腦的操作螢幕、車站的取票機、安裝 於便利商店中的影印機、及金融機構的ATM。這些聲波 接觸檢測裝置利用轉換器，包含提供於由玻璃之類形成 之基板(觸控面板)上之壓電振動器（壓電元件）。這些轉換 器作用如同體波之產生裝置及用以偵測由接觸該處控 面板之手指之類所散射之聲波之感測器。該表面聲波由 手指之類散射。該表面聲波之散射由檢測裝置檢測。該 檢測信號為抵抗控制器之時鐘信號，且決定散射該表面 聲波之位置。 產生為體波之超音波振動器由聲波產生裝置轉換 為表面聲波且沿著該基板傳播。 當該體波由聲波產生裝置轉換為表面聲波時，並非 所有體波都被轉換。產生包含未轉換體波之偽波、已透 過反射陣列傳送之表面聲波、及以產生預定方向之外之 方向反射之表面聲波。若這些偽波沿著該基板反射且到 達該感測器側轉換器，其導致這些轉換器振動且產生電 壓。這些電壓接收為噪音，且由該控制器丟出適當的判 斷。 基於這個理由，振動絕緣或振動吸收材料提供於該 200530922 基板上，以吸收該已產生偽波(舉例來說，已揭示於曰本 未凊求審查的發明公開案第6(1994)-324792(第2頁、第 一圖）及61(1986)-239322號（第U頁、第二圖）中。這些 振動絕緣與振動吸收材料一般為樹脂帶之形式，黏著附 加至該基板。到達該帶之偽波會被吸收與弱化。 在習知技術中，必須黏著附加該振動絕緣或振動吸 ，件至基板。絲著附加操作係手動執行，因此 步驟與減少生產力。如此—來，有增加製造成本 【發明内容】 本發明已鑑於上述各點加以開發。本發明之 2-種聲波接觸檢測裝置， :、 具有增加的生產力與降低的製造成本Λ 偽波 本發明之聲波接觸檢測裝置· -基板，具有聲波沿其傳播之表面； 一聲波產生裝置； 表面傳i射㈣用以導致該已產生聲波沿著該基板之 致之聲=變用更，r由㈣ -控制H ’ a決”物件之 其中用以漫射伴隨該聲波 铩， 射裝置形砂該基板上。 產生的偽波之偽波散 可採用一構造，其中該偽波散射農置包含由與該基 7 200530922 板相同材料形成之反射陣列。 該聲波產生裝置與偽波散射裝置可由印刷或蝕刻 形成。 在此，除了沿著該基板之表面傳播之表面聲波之 外，該「聲波」包含於薄基板中沿著其表面傳播之超音 該聲波產生裝置可包含模式轉換元件與超音波振 動器。 該檢測器可為轉換器。該轉換器係轉換超音波振動 至電子信號之元件，或轉換電子信號至超音波振動之元 件。 該偽波散射裝置可為漫射光栅。 在本發明之聲波接觸檢測裝置中，用以漫射伴隨聲 波產生而產生之偽波之偽波散射裝置形成於該基板 上。因此，該偽波可由該偽波散射裝置有效散射。 可採用一構造，其中該偽波散射裝置包含由與該基 板相同材料形成之反射陣列。在此情況中’該偽波可被 有效散射。 該聲波產生裝置與該偽波散射裝置可藉由印刷形 成。在此情況中，除了允許有效散射偽波之外，由於有 效生產係由自動化印刷允許，該生產力會增加且該製造 成本會減少。該聲波產生裝置及偽波散射裝置可藉用蝕 刻替代形成。同樣在此情況中，除了允許有效散射偽波 之外，由於單一方法可用以形成兩個裝置，該生產力會 增加且該製造成本會減少。 200530922 【實施方式】 將參照附圖說明聲波接觸檢測裝置（以下簡稱為「裝 置」）之較佳具體實施例。 #第-圖係利用於裝置1中之觸控面板3之前視圖。 圖所7F，該觸控面板3包含由矩形玻璃板形成之 =2 ;裝設於該基板2上之撓性印刷電路4(Fpc);及 电連結至該FPC 4之控制器6。 ^該FPC 4分支至FPC分支知與卯〇分支仆中。 j FPC分支4a沿著該基板2之水平方向延伸，亦即由 =貝X所指之X軸方向。該FPC分支4b沿著垂直於該 由之基板之垂直方向延伸，亦即由箭頭γ所指之γ軸 方向用以產生起音波之轉換器（體波產生裝置值 。除此之外，作用如同感 =之轉換 裔(¾測态）12與14裝設於該FPC 4上。 包含大量傾斜線16之反射陣列18沿著該基板2之 前表面上之Y軸形成於其橫向邊緣44附近。包含大量 傾斜線20之反射陣列22面對反射陣列18形成於該基 板之另一検向邊緣44處。包含大量傾斜線26之反射陣 列28沿著該基板2之上邊緣24附近之X轴形成。包含 大i傾斜線30之反射陣列32面對該反射陣列28形成 於该基板之下邊緣45附近。這些反射陣列18、22、28 及32揭不於日本未請求審查的發明公開案第 61(1986)-239322與200M4094號中。注意該反射陣列 18、22、28及32將統稱為反射陣列33。該反射陣列33 反射耸波，且導致其沿著該基板2之前表面傳播。 200530922 該轉換器8、10、12及14黏著附加至該基板2之 後表面。模式轉換元件78、80、82及84(光栅)形成於該 基板2之鈾表面，分別於對應至該轉換器$、1 〇、12及 Η之位置處。此構造將參照第十一圖說明，採取該模式 轉換元件80作為範例。第十一圖係基板2之概略部分 放大圖，自箭頭A之方向檢視。第十一圖之模式轉換元 件80藉由燒结玻璃膏於該基板2上形成，且包含複數 個平行脊80a。第十一圖中所示之脊8〇a以垂直於該圖 紙之表面之方向延伸。 该脊jOa之寬度設定為4〇〇//m，而高度設定為％ 或更咼。該體波反射之方向藉由變化該脊8〇a間之 ，隔加以，更。在本具體實施例中，該脊形成具有 j表面聲波直接產生於該脊8Ga旁之間隔。該轉換器 =著附加至相對該模式轉換元件8〇之基板側上，且 以知料電連接至FPC分支4b。 由元ί，ΐ i轉換元件7 8、8 2及8 4為相同構造。其中， _換由;:';目,代表之模式轉換元件(聲波產生裝置) f 8與10產生之體波至表面聲波。 傳播件82與84轉換已沿著該基板2之前表面 傳播，表面聲波（聲波）回體波。 10於約5.5ΜΗζ之頻率產生超音波振動 日^、f°:超音波振動自其後表面旅經該基板2之内部， ΐ! ί式轉換元件80。該模式轉換元件8〇朝向該 广沒射彳列32轉換該超音波振動至垂直於該脊8〇a傳播 ()之表面聲波。該表面聲波由該反射陣列32之向内 10 200530922 傾斜線30反射，且沿著該基板2之前表面朝向該反射 陣列28傳播，直到其到達該向内傾斜線26為止。 不由該模式轉換元件78與80轉換至表面聲波之體 波不以一特定方向輻射，但以來自該模式轉換元件78 與80之所有方向傳播。若該未轉換體波之一部分傳送 至該轉換器12與14,其變成妨礙主要信號檢測之偽波。 除此之外，雖然該模式轉換元件78與80構成以垂直於 其脊之方向產生表面聲波，已知該微表面聲波以非預期 方向產生。這些表面聲波亦可變成妨礙主要信號檢測之 偽波。若這些偽波到達該轉換器12與14，於此產生噪 音信號。 反射到達該反射陣列28之表面聲波，藉此朝向該 模式轉換元件84傳播。到達該模式轉換元件84之表面 聲波藉此轉換為體波。該已轉換體波傳送至該基板2之 後表面上之轉換器14，其感測與轉換其振動至電子信 號0 以類似方式，由該轉換器8產生之超音波振動（體波）籲 由模式轉換元件78轉換至表面聲波。接著，該表面聲 波經由該反射陣列18與該反射陣列22到達該模式轉換 元件82。該表面聲波由該模式轉換元件82轉換為體波， 傳送至將其感測與轉換至電子信號之轉換器14。 如此一來，該表面聲波跨由該反射陣列18、22、28 及32覆蓋之基板2之前表面之整個區域傳播。因此， 若手指（物件）接觸（觸控）此區域中之基板2 ’由該手指阻 滯之表面聲波會消失或被弱化。伴隨該表面聲波中變更 11 200530922 之信號變更自作用如同感挪。。 其連接之控制器6之計時電為之轉a換器12與14傳送至 定由該手指觸控之位置之幾員示）。該控制器6決 26及3及:波反射陣列;2之各傾斜線16、2。、 巧二反射。到達各傾斜線之〇 5%至1%之表面聲波 猎此反射。剩餘者穿透且傳送至相鄰 傾斜線接紅射絲自較。 Μ以于所有200530922 IX. Description of the invention: [Technical field to which the invention belongs] The present invention relates to an acoustic wave contact detection device, such as an ultrasonic touch panel. [Previous Technology] Ultrasonic sonic contact detection devices are now widely used. Examples of applications include operating screens for personal computers, ticket machines at stations, photocopiers installed in convenience stores, and ATMs for financial institutions. These acoustic wave contact detection devices use a transducer and include a piezoelectric vibrator (piezoelectric element) provided on a substrate (touch panel) formed of glass or the like. These converters function as body wave generating devices and sensors for detecting sound waves scattered by fingers touching the control panel there. The surface acoustic wave is scattered by a finger or the like. The scattering of the surface acoustic wave is detected by a detection device. The detection signal is a clock signal that resists the controller and determines the position where the surface acoustic wave is scattered. The ultrasonic vibrator generated as a body wave is converted into a surface acoustic wave by a sound wave generating device and propagates along the substrate. When the body wave is converted into a surface acoustic wave by a sound wave generating device, not all body waves are converted. A pseudo wave including an unconverted body wave, a surface acoustic wave transmitted through the reflection array, and a surface acoustic wave reflected in a direction other than a predetermined direction are generated. If these pseudo waves are reflected along the substrate and reach the sensor-side converter, it causes the converters to vibrate and generate voltage. These voltages are received as noise, and proper judgment is thrown by the controller. For this reason, a vibration insulation or vibration absorbing material is provided on the 200530922 substrate to absorb the generated pseudo wave (for example, disclosed in Japanese Patent Publication No. 6 (1994) -324792 which has not yet been examined) Page 2, first picture) and 61 (1986) -239322 (page U, second picture). These vibration insulation and vibration absorbing materials are generally in the form of resin tapes that are adhered to the substrate and reach the tape. The pseudo wave will be absorbed and weakened. In the conventional technology, the vibration insulation or vibration suction must be adhered to the substrate. The threaded additional operation is performed manually, so the steps and productivity are reduced. In this way, there is increased manufacturing Cost [Summary of the Invention] The present invention has been developed in view of the above points. The two types of sonic contact detection devices of the present invention have increased productivity and reduced manufacturing costs. Has a surface along which sound waves propagate; a sound wave generating device; surface transmission i is used to cause the sound of the generated sound waves along the substrate = change, r is controlled by ㈣-H One of the "a decision" objects is used to diffuse the acoustic wave, and the radiation device is shaped on the substrate. The pseudo wave dispersion of the generated pseudo wave can adopt a structure, wherein the pseudo wave scattering farm includes a base and the base 7 200530922 A reflective array formed of the same material as the plate. The acoustic wave generating device and pseudo wave scattering device can be formed by printing or etching. Here, in addition to the surface acoustic waves that propagate along the surface of the substrate, the "sound waves" are contained in a thin substrate The ultrasonic wave propagating device along its surface may include a mode conversion element and an ultrasonic vibrator. The detector may be a converter. The converter is a component that converts ultrasonic vibrations to electronic signals, or converts electronic signals to An ultrasonic vibration element. The pseudo wave scattering device may be a diffusion grating. In the acoustic wave contact detection device of the present invention, a pseudo wave scattering device for diffusing a pseudo wave generated accompanying the generation of a sound wave is formed on the substrate. Therefore, the pseudo wave can be effectively scattered by the pseudo wave scattering device. A configuration can be adopted in which the pseudo wave scattering device includes a material made of the same material as the substrate Into a reflection array. In this case, the pseudo wave can be effectively scattered. The acoustic wave generating device and the pseudo wave scattering device can be formed by printing. In this case, in addition to allowing effective scattering of the pseudo wave, it is effective because Production is allowed by automated printing, the productivity will increase and the manufacturing cost will decrease. The acoustic wave generating device and pseudo wave scattering device can be formed by etching instead. Also in this case, in addition to allowing effective scattering of pseudo waves, because A single method can be used to form two devices, the productivity will increase and the manufacturing cost will decrease. 200530922 [Embodiment] A preferred embodiment of a sonic contact detection device (hereinafter referred to as "device") will be described with reference to the drawings. # FIG. 1 is a front view of the touch panel 3 used in the device 1. As shown in FIG. 7F, the touch panel 3 includes 2 formed by a rectangular glass plate; a flexible printed circuit 4 (Fpc) mounted on the substrate 2; and a controller 6 electrically connected to the FPC 4. ^ The FPC 4 branch is branched into the FPC branch and the branch. j The FPC branch 4a extends along the horizontal direction of the substrate 2, that is, the X-axis direction indicated by = X. The FPC branch 4b extends along a vertical direction perpendicular to the substrate, that is, a γ-axis direction indicated by an arrow γ to generate a sound wave converter (body wave generating device value. In addition, the effect is the same Sense = 12 (¾ state) 12 and 14 are installed on the FPC 4. A reflective array 18 containing a large number of oblique lines 16 is formed near its lateral edge 44 along the Y axis on the front surface of the substrate 2. Included A reflective array 22 of a large number of inclined lines 20 is formed at the other facing edge 44 of the substrate facing the reflective array 18. A reflective array 28 including a large number of inclined lines 26 is formed along the X axis near the upper edge 24 of the substrate 2. A reflective array 32 including a large i inclined line 30 is formed near the lower edge 45 of the substrate facing the reflective array 28. These reflective arrays 18, 22, 28, and 32 are not disclosed in Japanese Unexamined Invention Publication No. 61 ( 1986) -239322 and 200M4094. Note that the reflection arrays 18, 22, 28, and 32 will be collectively referred to as the reflection array 33. The reflection array 33 reflects the tower wave and causes it to propagate along the front surface of the substrate 2. 200530922 The conversion Devices 8, 10, 12, and 14 To the rear surface of the substrate 2. Mode conversion elements 78, 80, 82, and 84 (gratings) are formed on the uranium surface of the substrate 2 at positions corresponding to the converters $, 10, 12, and plutonium, respectively. This structure The mode conversion element 80 will be taken as an example with reference to the eleventh figure. The eleventh figure is an enlarged view of a schematic part of the substrate 2, viewed from the direction of arrow A. The mode conversion element 80 of the eleventh figure is sintered A glass paste is formed on the substrate 2 and includes a plurality of parallel ridges 80a. The ridge 80a shown in the eleventh figure extends in a direction perpendicular to the surface of the drawing. The width of the ridge jOa is set to 400. // m, and the height is set to% or more. The direction of the body wave reflection is changed by changing the interval between the ridges 80a, and more. In this specific embodiment, the ridge is formed with a j-surface acoustic wave directly Generated at the interval next to the ridge 8Ga. The converter = attached to the substrate side of the mode conversion element 80, and is electrically connected to the FPC branch 4b as expected. Yuyuan, ΐi conversion element 7 8, 8 2 and 8 4 have the same structure. Among them, _ 换 由;: '; 目, represents the mode conversion Element (acoustic wave generating device) f The body waves generated by 8 and 10 are converted to surface acoustic waves. Propagators 82 and 84 transform and have propagated along the front surface of the substrate 2. Surface acoustic waves (acoustic waves) return to body waves. Ultrasonic vibration day ^, f °: Ultrasonic vibration travels through the interior of the substrate 2 from its rear surface, ΐ! 式 type conversion element 80. The mode conversion element 80 transforms the ultrasonic wave toward the wide shot array 32. The sound wave vibrates to a surface acoustic wave propagating perpendicular to the ridge 80a. The surface acoustic wave is reflected by the inward 10 200530922 inclined line 30 of the reflection array 32, and propagates along the front surface of the substrate 2 toward the reflection array 28, Until it reaches the inwardly inclined line 26. Bulk waves that are not converted by the mode conversion elements 78 and 80 to surface acoustic waves do not radiate in a specific direction, but propagate in all directions from the mode conversion elements 78 and 80. If a part of the unconverted body wave is transmitted to the converters 12 and 14, it becomes a pseudo wave that hinders the detection of the main signal. In addition, although the mode conversion elements 78 and 80 are configured to generate surface acoustic waves in a direction perpendicular to their ridges, it is known that the micro surface acoustic waves are generated in an unexpected direction. These surface acoustic waves can also become pseudo waves that prevent the detection of major signals. If these pseudo waves reach the converters 12 and 14, noise signals are generated there. The surface acoustic waves reflected to the reflection array 28 are thereby propagated toward the mode conversion element 84. The surface acoustic wave reaching the mode conversion element 84 is thereby converted into a body wave. The converted body wave is transmitted to a converter 14 on the rear surface of the substrate 2, which senses and converts its vibration to an electronic signal 0. In a similar manner, the ultrasonic vibration (body wave) generated by the converter 8 calls for a mode The conversion element 78 converts to a surface acoustic wave. Then, the surface acoustic wave reaches the mode conversion element 82 via the reflection array 18 and the reflection array 22. The surface acoustic wave is converted into a body wave by the mode conversion element 82 and transmitted to a converter 14 that senses and converts it to an electronic signal. In this way, the surface acoustic wave propagates across the entire area of the front surface of the substrate 2 covered by the reflection arrays 18, 22, 28, and 32. Therefore, if a finger (object) contacts (touches) the substrate 2 ′ in this area, the surface acoustic wave blocked by the finger will disappear or be weakened. Accompanying the change in this surface acoustic wave 11 200530922 The signal change acts like a sense of movement. . The timing of the connected controller 6 is to turn the converters 12 and 14 to the positions determined by the finger to touch). The controller 6 and 26 and 3: and the wave reflection array; 2 each of the inclined lines 16, 2. , Qiao Er reflection. Surface acoustic waves reaching 5% to 1% of each oblique line hunt this reflection. The remainder penetrates and transmits to the adjacent oblique line to connect with the red shot wire for comparison. M to all
用以藉由漫射偽波降低噪音之偽波散射裝置， 漫射光，（散射部分)形成於該裝置丨之基板2之前表面 上。、遠沒射光柵包含第一圖中由元件符號％％及邛 所代表^矩形部、由傾斜線40與42沿著該上邊緣24 形成之沒射光栅43、及由傾斜線46與48沿著該橫向邊 緣44形成之漫射光柵49。該傾斜線4〇、42、46及牦 構成第二反^射陣列，具有不同於該反射陣列18、22、28 及32之功能。該第二反射陣列亦提供於該漫射光柵34、 36及38中（芬照第七圖）。該漫射光柵％、％、％、幻A pseudo wave scattering device for reducing noise by diffusing a pseudo wave, diffused light (scattering part) is formed on the front surface of the substrate 2 of the device. The far-infrared grating includes the rectangular portion represented by the component symbols %% and 邛 in the first figure, the infra-grated grating 43 formed by oblique lines 40 and 42 along the upper edge 24, and the oblique lines 46 and 48 A diffusion grating 49 is formed along the lateral edge 44. The oblique lines 40, 42, 46 and 牦 form a second reflective array and have functions different from those of the reflective arrays 18, 22, 28, and 32. The second reflection array is also provided in the diffusion gratings 34, 36, and 38 (Finance, seventh image). The diffuse grating%,%,%, magic
光在稍後說明。注意該漫射光柵將統稱為 接下來，黏著附加至該基板2之FPC 4將參照第 圖第了圖及第四圖說明。第二圖為說明FpC4之前 圖’其係附加至該基板2。雖然該Fpc 4黏著附加至 基板2之後表面，$ 了方便的目的以實線緣製。注竟 反射陣列33與該漫射光柵％從第二圖省略。第三g 概略平面圖，顯示該咖4之整體。第四圖係由第三丨 中B所才曰之FPC 4部分之放大圖。該Fpc 4如第三圖」 12 200530922 =圖中所不對應至自第二®之基板2之後表面檢視之 54 與14之電㈣與 電極5 2與5 4自上5弟三圖與第四圖所示。該 或夂向里K言予方错由烊接、一導電膠，例如銀膏、 絲二° z、生^电膠連接至該轉換器12盥Η。亦即^ 轉換器12與14放置於且' 亦即’该 間。該FPr 4 士、 與该基板2之後表面之 告哭1 / witFPc分支4a|Mb及用以連接仰 制裔6之連接線和構成。 逆钱》亥控 形成FPC：分支4a為相同長度’且整人 與該FPC八—圖）。牙孔56形成於該連接線4c 換器8之;支5^間’允許兩者分離。用以連接該轉 分支4a之1山形成於相對於提供該電極52處之；pPc 靠近該電極ί之：ϋ接該控制器6之電極6〇形成於 10之電極62开4C Τ端處。用以連接該轉換器 + 4, /成於相對於提供該電極54處之FPC八 之一端（參照第三圖）。 刀 個印所示’該連接線4c之印刷佈線64包含十 64i 及 64.、、泉 ί 64b、咏、64d、64e、64f、64芭、6仆、 14之四信號佈線群由連接至該轉換器（感測器）12與 成。在此^卩刷佈線(信號接受佈線）6牝、64f及64g ^ 群之任—側要的是接地佈線64c與64h提供於該信號線 分別傳送轉換器8與1〇之信號佈線64b與糾 相鄰於該接地佈線04c與64h。此外，接地佈 200530922 線64a與64j分別提供相鄰於其外側上之信號佈線64b 與64i。此構造導致分別由該接地佈線64c與64h環繞 之信號接受佈線64d、64e、64f及64g、及由該接地佈 線64c及64a與該接地佈線64h及64j環繞之信號傳送 佈線64b與64i遮蔽所有信號佈線。此關係也維持於Fpc 分支4a與4b中。藉由此構造，由該印刷佈線64b、64d、 64e、64f、64g及64i組成之信號佈線群不太可能被 電磁波影響。於此同時，可獲得電磁波不太可能朝向: 外部輕射之效果。上述構造特別有效於該FpC4沿著= 基板2，伸-長距離之情況中改良抗麵性f。” 咕“主广該FPC分支仆之彎曲線於第四圖中由元件符 人68代表。該FPc分支仆以朝向第四圖之圖紙 向沿著彎曲線66彎曲。接著，該FPC分支4b 曲^▲四圖之圖紙表面之方向沿著彎曲線68逆向彎 ώ邱％彳ί"亥電極62(參照第二圖）面對該轉換器10。該彎 八;』h弟二廣1中由元件符號69代表。如此一來，該Fpc -/σ著垓基板2之橫向邊緣44配置。注意該 4耆劑（未顯示）之類固定至該基板2。 第五來，將參照第五圖說明該反射陣列33之配置。 二^該反射陣列33之前視圖，對應至第一圖所示。 1 j射偽波之漫射光柵34、36、38等等自第五圖省 2田6二f射陣歹"8、22、28及32之各傾斜線16、20、 於45。角傾斜。該傾斜線16、20、26及30配置 亥基板2面對它們的反射陣列反射表面聲波。 以汉射陣列33藉由印刷已經形成㈣玻璃之微細教子 14 200530922 至網版印刷等等之基板2之前表面上之糊狀物中，接著 於約500QC燒结加以形成。注意該基板2之角落部分顯 示於第五圖中，由元件符號25代表。或者，一 UV可醫 治有機墨或使金屬粒子作為填充加入其中以改良其反 射性質之有機墨可利用為該反射陣列之材料。 該傾斜線16、20、26及30間之區間減少，亦即該 傾斜線以更高密度配置，其離該傳送側轉換器8與10 更遠。這是由於當穿透該該傾斜線16、20、26及30時， 表面聲波之強度變弱。因此，採用上述構造以補償該弱_ 化，以沿著該基板2之前表面均勻傳播該表面聲波變為 必要。注意該反射陣列22與28分別自該基板之上邊緣 24與該橫向邊緣44(參照第一圖）稍微向内提供。這使得 稍後將說明的漫射光柵50之傾斜線40、42、46及48 可提供於該反射陣列22與28之外侧。 接下來，將參照第六圖說明作用如同偽波散射裝置 之漫射光柵50。第六圖係對應至第一圖顯示該漫射光栅 50以及該模式轉換元件78、80、82及84之前視圖。組魯 成該第二反射陣列之傾斜線40與42互相相關形成於該 基板2之上邊緣24附近之相對角處。該傾斜線之角度 使得其近似垂直朝向該基板2之中央部份，且逐漸減少 朝向其邊緣。以一類似方式，組成該第二反射陣列之其 它傾斜線46與48互相相關以逐漸變更角度形成於相對 角處。這使得偽波不以相同方向反射，而是漫射。 該傾斜線40、42、46、與48放置於帶之類黏著至 傳統觸控面板處之區域。亦即說，該傾斜線40、42、46、 15 200530922Light will be explained later. Note that the diffusion gratings will be collectively referred to as the following. The FPC 4 attached to the substrate 2 will be described with reference to the first, fourth and fourth figures. The second figure is a diagram before FpC4, which is attached to the substrate 2. FIG. Although the FPC 4 is adhesively attached to the rear surface of the substrate 2, it is made with a solid edge for convenience. Note that the reflection array 33 and the diffusion grating% are omitted from the second figure. The third g is a schematic plan view showing the whole of the coffee 4. The fourth picture is an enlarged view of part 4 of the FPC from the third place. The Fpc 4 is as the third picture. ”12 200530922 = The pictures in the picture do not correspond to the 54 and 14 electric wires and electrodes 5 2 and 5 4 from the top of the second ® substrate 2 and the third picture and the fourth As shown. The orientatories can be connected to the converter 12 by a conductive adhesive, such as a silver paste, a wire paste, and an electric gel. That is, ^ converters 12 and 14 are placed between and 'i.e.'. The FPR 4 driver, the whistle 1 / witFPc branch 4a | Mb on the rear surface of the substrate 2 and the connecting wire and structure for connecting the Yangtze 6 "Inverse Money" and "Haikang" form an FPC: the branch 4a is the same length 'and the whole person is the same as the FPC (Figure 8). A perforation 56 is formed in the connecting line 4c of the converter 8; the support 5 allows the two to be separated. A mountain for connecting the branch 4a is formed opposite to the electrode 52 provided; pPc is close to the electrode: an electrode 60 connected to the controller 6 is formed at an electrode 62 of the 10C 4C terminal. It is used to connect the converter + 4, / to one end of the FPC eight with respect to the electrode 54 provided (refer to the third figure). The printed wiring 64 of the connecting wire 4c includes ten 64i and 64. ,, spring 64b, Yong, 64d, 64e, 64f, 64 bar, 6 servants, and 14 signal wiring groups connected to the The converter (sensor) 12 is integrated. Here ^ 卩 brush wiring (signal receiving wiring) 6 牝, 64f, and 64g ^ Any of the groups-the side is that the ground wiring 64c and 64h are provided on the signal line to transmit the signal wiring 64b and corrector of the converter 8 and 10 Adjacent to these ground wirings 04c and 64h. In addition, the grounding cloth 200530922 lines 64a and 64j provide signal wirings 64b and 64i adjacent to the outside thereof, respectively. This structure causes the signal receiving wirings 64d, 64e, 64f, and 64g surrounded by the ground wirings 64c and 64h, and the signal transmission wirings 64b and 64i surrounded by the ground wirings 64c and 64a and the ground wirings 64h and 64j, respectively, to shield all signals. wiring. This relationship is also maintained in Fpc branches 4a and 4b. With this structure, the signal wiring group composed of the printed wirings 64b, 64d, 64e, 64f, 64g, and 64i is less likely to be affected by electromagnetic waves. At the same time, it is possible to obtain the effect that the electromagnetic wave is unlikely to be directed: the light from the outside. The above-mentioned structure is particularly effective for improving the surface resistance f in the case where the FpC4 extends along the substrate 2 over a long distance. "Gu" The curved line of the FPC branch servant is represented by the component symbol person 68 in the fourth figure. The FPC branch is bent along the bending line 66 toward the drawing of the fourth figure. Then, the direction of the drawing surface of the FPC branch 4b and the four drawings is reversely curved along the bending line 68. The electrode 62 (refer to the second drawing) faces the converter 10. The turn eight; "h brother Erguang 1 is represented by the component symbol 69. In this way, the Fpc − / σ is arranged against the lateral edge 44 of the substrate 2. Note that the 4 tincture (not shown) or the like is fixed to the substrate 2. Fifthly, the configuration of the reflection array 33 will be described with reference to the fifth figure. The front view of the reflection array 33 corresponds to that shown in the first figure. The diffusion gratings 34, 36, 38, etc. of 1 j-shot pseudo waves are from the fifth figure, and the tilt lines 16, 20, and 45 of 2, 22, 28, and 32, respectively. Angle tilt. The oblique lines 16, 20, 26, and 30 are arranged. The substrate 2 reflects the surface acoustic waves facing their reflection array. The Han-ray array 33 is formed by printing the micrometers of glass which have been formed into glass. 14 200530922 to screen printing and the like on the front surface of the substrate 2 and then sintered at about 500 QC to form it. Note that the corner portion of the substrate 2 is shown in the fifth figure and is represented by the element symbol 25. Alternatively, a UV-curable organic ink or an organic ink with metal particles added as a filler to improve its reflective properties may be used as the material of the reflective array. The interval between the oblique lines 16, 20, 26, and 30 decreases, that is, the oblique lines are arranged at a higher density, which is farther from the transfer-side converters 8 and 10. This is because when the inclined lines 16, 20, 26, and 30 are penetrated, the intensity of the surface acoustic wave becomes weak. Therefore, it becomes necessary to adopt the above-mentioned configuration to compensate for the weakening so as to uniformly propagate the surface acoustic wave along the front surface of the substrate 2. Note that the reflective arrays 22 and 28 are provided slightly inward from the upper edge 24 and the lateral edge 44 (refer to the first figure) of the substrate, respectively. This allows the inclined lines 40, 42, 46, and 48 of the diffusion grating 50 to be described later to be provided on the outside of the reflection arrays 22 and 28. Next, a diffusion grating 50 that functions as a pseudo wave scattering device will be described with reference to the sixth figure. The sixth figure corresponds to the first figure and shows the front view of the diffusion grating 50 and the mode conversion elements 78, 80, 82, and 84. The oblique lines 40 and 42 forming the second reflection array are formed at opposite angles near the upper edge 24 of the substrate 2 in correlation with each other. The angle of the oblique line makes it approximately perpendicular to the central portion of the substrate 2 and gradually decreases toward its edge. In a similar manner, the other inclined lines 46 and 48 constituting the second reflection array are correlated with each other to gradually change the angle formed at the opposite angle. This makes the pseudo waves not reflect in the same direction but diffuse. The oblique lines 40, 42, 46, and 48 are placed in a region such as a tape adhered to a conventional touch panel. In other words, the inclined lines 40, 42, 46, 15 200530922
與48形成以取代傳統觸控面板之帶。到達這些區域之 偽波由該傾斜線40、42、46、與4漫射反射，使得其不 傳播至該轉換器（感測器）12與14。超音波振動能量之弱 化率根據該超音波之頻率、該振動模式、及玻璃型態而 異。於頻率5·5ΜΗζ之表面聲波之強度於沿著由鹼石灰 玻璃形成之典型基板2傳播40cm後弱化為1/10其原始 強度。因此，該漫射反射偽波於其跨該基板2反射時快 速弱化且消失。 I 傾斜於45°或-45°外之其他角度之複數個分離脊，亦 即傾斜線，形成於矩形漫射光柵34、36及38處。該脊 之形狀將參照第七圖與第八圖說明。第七圖係該漫射光 柵36與該反射陣列33之部分放大圖。第八圖係該漫射 光柵38與該反射陣列33之部分放大圖。清楚顯示於第 七圖中該漫射光柵36之傾斜線36a之角度不同於該反射 陣列18與32。同樣的，第八圖清楚顯示由陡傾斜線38a 組成之漫射光柵38。 這些漫射光栅36與38亦作用以散射反射於45°或參 -45°外之其他角度朝向外部沿著該基板2之前表面傳播 之偽波。雖然未詳細顯示，該漫射光柵34佔用一類似 結構與功能。該傾斜線36a與38a可為平行或於個別漫 射光柵36與38中逐漸變更角度。該漫射光柵34與38 亦作用以阻滯以一預定方向之外之其他方向傳播之表 面聲波之路徑，使得其不到達該轉換器（感測器）12與14。 該漫射光柵50藉由鉛玻璃粒子形成於一糊狀物中 印刷於該基板2上，以與該反射陣列33相同之方式。 16 200530922 因此，該漫射光柵50可於該反射陣列33形成之同時印 刷。這會改良生產力與降低製造成本。 該漫射光柵36與38之傾斜線36a與38a形成為複 數個脊。然而，該漫射光栅並不限於由脊形成，且各種 修改為可能。該漫射光柵（漫射部）之另一構造顯示於第 九圖中。第九圖係該漫射光柵（漫射部）之另一形式之放 大圖。此漫射部51由平面圖中鑽石形之大量突出部51a 構成。到達該散射部分51之偽波於該區域中重複由突 出部51a反射該時弱化藉此形成。該突出部之形狀不限 於鑽石形’且可為任何想要的形狀，例如矩形、三角形、 其他多邊形、或橢圓形。 第十圖係顯示形成於基板2之前表面上之漫射光柵 50與反射陣列33之相對位置之前視圖。第十圖清楚顯 示該傾斜線40與42位於該反射陣列28外及該傾斜線 46與48位於該反射陣列22外。放置該漫射光柵34、 3+6及38,使得穿透該反射陣列33而無反射之聲波（表面 聲波）以不同於該反射陣列33反射它們的方向反射。 舉例而言’尤其由該轉換器8與該模式轉換元件78 產生之表面聲波當穿透時由該反射陣列18朝向該反射 陣列22反射。不由該反射陣列18反射之表面聲波到達 該漫射光柵36。如第七圖所示，該漫射光柵％作用以 朝向絲板2外側反射表面聲波。亦即說，該漫射光桃 36以主要方向之相對方向反射該表面聲波，使得會導致 料2音波㈣不會到達該轉換器（感測器）12。 沿者該基板2之邊緣形成之傾斜線4G、42、46及 17 200530922 48構成以漫射反射與弱化沿著該基板2之前表面傳播之 體波。一般而言，體波由該模式轉換元件78與8〇轉換 至表面聲波。然而，並非100%轉換的體波以其預定方 向外的其他方向傳播。因此，該傾斜線4〇、42、46及 48利用以弱化這些偽體波。 除此之外，表面聲波於由該模式轉換元件78與8〇 轉換後以其預定方向外的其他方向傳播。該傾斜線/4〇、 42、46及48亦漫射反射這些雜散表面聲波，使得其以 各種方向散射。偽超音波振動到達該轉換器（感測器、)12 與14以導致噪音之危險由此漫射反射降低。 /母豚之圖片82印刷於第十圖中該傾斜線4〇與42 之間，也於該傾斜線46與48之間。該圖片82亦有效 I1中低喿音。该圖片82具有彎曲的輪廓。到達該圖片82 輪廓的體波或雜散表面聲波以各種方向反射與弱化。只 要其輪廓以彎曲線形成，或其角度導致偽波漫射反射至 各種方向’可應用任何圖片。或者，可印刷圖案於這些 部分的基板2上。 本發明之具體實施例已詳述於上。然而，本發明不 限於前述具體實施例。舉例而言，該漫射光柵5〇可藉 由蝕刻氫氟酸形成。該漫射光柵50亦可藉由化學或物 理移動過程應用雷射、喷砂、或切割形成。換言之，該 漫射光栅50可由溝渠取代突出部形成。 在本具體貫施例中’已說明應用具有模式轉換元件 78、80、82、與84稱為「光柵型態」之表面聲波產生 裝置之情況。然而，本發明並不限於應用此型態之表面 18 200530922 產生裝置之裝置。舉例而言’本發明可應用至藉由 :Μ克力柱(未顯示）之楔形轉換器（未顯^產生^面 年波之聲波接觸檢測裝置。本發明亦可應 狀電極，而“= 利用於本發明巾之FPC4可以任何想要 ^附力巧該基板2。^而’最好·電振動器使用J;卜1線 固化黏者劑黏者附加。這允許該轉換器8、1〇、12及j 之位置關於該模式轉換元件78、8〇、82及84 :確認導致黏著之紫外線之照射前表面聲波之最】產 …該偽波散射裝置可為導致漫射反射與弱化之型 恕，如上所述。注意兩個轉換器（感測器）12盥 ^體實施例中提供於互相接近處。然而，該轉、= 器）12與14可與該傳送轉換器8应j j 、00之’、丨 U與Η漏出，而另一個轉換器;^==器 會抑制由另—轉換器拾取的噪音。除=：^近白 該控制器6至該傳送轉換器8與1 外，可減乂自 可抑制來自該電子路徑 ι子路徑。因此， 接下來m 磁波的發射。 除偽波之紐散射裝置之其 7方式弱化與消 說明中，將說明該偽波散射裝置下列 ::’藉由印刷破·子形成至物狀4產 陣列H可應_ 叫具有反射 风屏术之化學或物理移除過 19 200530922 程，例如蝕刻氫氟酸、應用雷射、喷砂、或切割之過程。 第十二圖係用以隨機散射與消除偽波之第二具體 實施例之偽波散射裝置形成於其上之基板之前視圖。第 十三圖係該偽波散射裝置形成於第十二圖上之基板之 區域之部分放大圖。第十四圖係具有偽波散射裝置之第 三具體實施例之基板之前視圖。第十五圖係類似於第十 四圖之第四具體實施例之偽波散射裝置形成於其上之 基板之前視圖。注意第十二圖、第十三圖、第十四圖及· 第十五圖顯示第一圖中所示之(觸控面板）裝置之修改， 其中該漫射光柵34、36及38已由該第二、第三與第四 具體實施例之偽波散射裝置取代。其他結構透過該三個 具體實施例共用，因此相同結構由相同元件符號代表， 且省略其說明。亦注意於第十二圖至第十五圖中，僅顯 示重要部份，且省略其他部分。 1.藉由隨機散射消除偽波 作為一範例，將說明精細突出部隨機散佈（由前述印 刷方法）於基板上以形成偽波散射裝置之情況。注意如上籲 所述，低漥可由化學或物理溝渠過程（鑽孔過程）取代該 精細突出部形成。 如第十二圖與第十三圖所示，漫射部100與102如 同偽波散射裝置形成於基板2a上，於其橫向邊緣44、 下邊緣45及角落。該漫射部100為矩形，且沿著該橫 向邊緣44與該下邊緣45延伸。該漫射部102於角落形 成一 L形◦所有漫射部100、100與102放置於反射陣 列106與108外側。大量漫射突出部104隨機散佈於該 20 200530922 漫射部100、100與102中，亦即沒有規律性。該漫射 突出部104之形狀於平面圖中為矩形。然而，該漫射部 104不限於矩形，且可為任何想要的形狀，例如圓形、 橢圓形或多邊形。該漫射部104可為相同大小，或各漫 射突出部104可為不同大小與形狀。在此設定該漫射突 出部104之散佈，使得偽波(舉例來說，寄生回音）足夠 散射與消除(使得其不被感測器檢測為噪音）。 為該漫射突出部104之群之散射部分100、100、與0 10 2散射與消除沿著該基板2 a之表面傳播之偽波之情況 相同於上述具體實施例。因此，將省略詳細說明。注意 偽波沿其旅行的路徑130、132、134、136直到其被消 除為止，如第十二圖中所示。 2.藉由連貫散射消除偽波 在偽波散射裝置與反射陣列藉由以糊狀物形式印 刷玻璃粒子同步形成於基板上之方法中，該偽波散射裝 置之脊之高度與該反射陣列之傾斜線必須實質匹配（舉 例而言，於高度5 // m至10 // m處）。此外，想要有限區籲 域中偽波之弱化與消除。在此情況中，偽波之弱化與消 除可更有效藉由形成產生一連貫散射效果之漫射光栅 執行。 在此，已知發射自一轉換器與透過該基板傳播之偽 波之頻率與波長分別為5.5MHz與約570/zm(在一蘇打 玻璃基板的情況中）。採用這些事實的優點。 如第十四圖中所示，漫射光栅110a與11 Ob沿著一 基板2b之橫向邊緣44形成。漫射光柵110c與110d沿 21 200530922 著該基板2b之下邊緣45形成。注意漫射光柵ll〇a、 110b、110c與ll〇d將統稱為漫射光柵110。該漫射光柵 110提供於相對於該模式轉換元件78、80、82及84之 基板2b之邊緣附近。該漫射光柵11〇類似於該漫射光 柵43與49包含向外傾斜線112。該傾斜線112互相平 行提供，且其傾斜角小於該漫射光柵43與49的傾斜 角。藉由該傾斜線112的配置，該漫射光柵no作用以 藉由連貫散射瑞立波（表面聲波)散射與消除偽波。亦即 說，該瑞立波於互相干擾時散射與消除。 3·藉由連貫散射藉由轉換瑞立波至體波消除偽波 上述於標題2說明藉由連貫散射消除偽波不會轉換 已經、s:成偽波之瑞立波（表面聲波）至不同形式之瑞立 波。然而，自此移除垂直相對於基板表面振動之組件之 瑞立波（表面聲波)轉換為體波之方法亦有效。 亦即說，偽波之傳播方向變更或散射，且散射至於 該基板之前與後表面之間反彈時傳播之體波。不像表面 聲波，體波不會沿著水平表面以很快的速度旅行，它們 也不冒板行很長的距離。因此，偽波可更快弱化與消 除。表面聲波轉換至體波在聲學領域中指的是「接^瑞 立波至蘭姆模式」。 如第十五圖所示形成於基板2c上之漫射光相 120(12〇a、120b、120c及120d)類似於該漫射光柵 照第十四圖），用以藉由上述標題2下說明之連貫散㈣ 除偽波。然而，組成該漫射光栅之傾斜線間之區間則 傾斜線之寬度不同。除此之外，傾斜線之方向（角^ 22 200530922 與該傾斜線112之方向（角度）相同，或其可不同。 如上所述，各種構造可應用為用以散射與消除偽波 之偽波散射裝置。 注意在上述具體實施例中，撓性印刷電路(FPC)應用 為裝設於該基板上之電子電路之佈線。然而，撓性爲平 電纜(FPC)亦可應用為佈線。Formed with 48 to replace the belt of the traditional touch panel. The pseudo waves reaching these areas are diffusely reflected by the oblique lines 40, 42, 46, and 4 so that they do not propagate to the converters (sensors) 12 and 14. The attenuation rate of the ultrasonic vibration energy varies according to the frequency of the ultrasonic wave, the vibration mode, and the glass type. The intensity of the surface acoustic wave at a frequency of 5 · 5 ΜΗζ was weakened to 1/10 of its original intensity after propagating 40 cm along a typical substrate 2 formed of soda-lime glass. Therefore, the diffuse reflection pseudo wave quickly weakens and disappears when it reflects across the substrate 2. I. A plurality of separated ridges inclined at angles other than 45 ° or -45 °, that is, oblique lines, are formed at the rectangular diffusion gratings 34, 36, and 38. The shape of the ridge will be described with reference to the seventh and eighth figures. The seventh figure is an enlarged view of a part of the diffused light grid 36 and the reflective array 33. The eighth figure is an enlarged view of a part of the diffusion grating 38 and the reflection array 33. The angle of the inclined line 36a of the diffusion grating 36 clearly shown in the seventh figure is different from the reflection arrays 18 and 32. Similarly, the eighth figure clearly shows the diffusion grating 38 composed of steeply inclined lines 38a. These diffusion gratings 36 and 38 also act to scatter and reflect the pseudo waves propagating along the front surface of the substrate 2 toward the outside at angles other than 45 ° or -45 °. Although not shown in detail, the diffusion grating 34 occupies a similar structure and function. The oblique lines 36a and 38a may be parallel or gradually change the angle in the respective diffusion gratings 36 and 38. The diffusion gratings 34 and 38 also function to block the path of the surface acoustic wave propagating in a direction other than a predetermined direction so that it does not reach the converters (sensors) 12 and 14. The diffusion grating 50 is formed in a paste by lead glass particles and printed on the substrate 2 in the same manner as the reflection array 33. 16 200530922 Therefore, the diffusion grating 50 can be printed at the same time as the reflection array 33 is formed. This will improve productivity and reduce manufacturing costs. The inclined lines 36a and 38a of the diffusion gratings 36 and 38 are formed as a plurality of ridges. However, the diffusion grating is not limited to being formed by ridges, and various modifications are possible. Another configuration of the diffusion grating (diffused portion) is shown in the ninth figure. The ninth figure is an enlarged view of another form of the diffusion grating (diffuse part). This diffusing portion 51 is composed of a large number of diamond-shaped protrusions 51a in a plan view. The pseudo wave reaching the scattering portion 51 is repeatedly formed in this region by being reflected by the protruding portion 51a and weakening at that time. The shape of the protrusion is not limited to a diamond shape 'and may be any desired shape, such as a rectangle, a triangle, other polygons, or an ellipse. The tenth figure is a front view showing the relative positions of the diffusion grating 50 and the reflection array 33 formed on the front surface of the substrate 2. The tenth figure clearly shows that the inclined lines 40 and 42 are located outside the reflection array 28 and the inclined lines 46 and 48 are located outside the reflection array 22. The diffusion gratings 34, 3 + 6, and 38 are placed so that acoustic waves (surface acoustic waves) that penetrate the reflection array 33 without reflection are reflected in a direction different from that in which the reflection array 33 reflects them. For example, the surface acoustic waves generated by the converter 8 and the mode conversion element 78 are reflected by the reflection array 18 toward the reflection array 22 when they penetrate. Surface acoustic waves that are not reflected by the reflection array 18 reach the diffusion grating 36. As shown in the seventh figure, the diffusion grating% functions to reflect surface acoustic waves toward the outside of the wire plate 2. That is, the diffused light peach 36 reflects the surface acoustic wave in a direction opposite to the main direction, so that the sound wave of the material 2 will not reach the converter (sensor) 12. The oblique lines 4G, 42, 46, and 17 200530922 48 formed along the edge of the substrate 2 constitute a bulk wave that propagates along the front surface of the substrate 2 with diffuse reflection and weakening. In general, body waves are converted into surface acoustic waves by the mode conversion elements 78 and 80. However, not 100% converted body waves propagate in other directions outward from their intended direction. Therefore, the inclined lines 40, 42, 46, and 48 are utilized to weaken these pseudo-body waves. In addition, the surface acoustic wave propagates in the directions other than its predetermined direction after being converted by the mode conversion elements 78 and 80. The oblique lines / 40, 42, 46, and 48 also diffusely reflect these stray surface acoustic waves, causing them to scatter in various directions. Pseudo-ultrasonic vibrations reach the converters (sensors) 12 and 14 to reduce the risk of noise and therefore diffuse reflections are reduced. The picture of the female dolphin 82 is printed between the oblique lines 40 and 42 in the tenth figure, and also between the oblique lines 46 and 48. The picture 82 is also valid. The picture 82 has a curved outline. Body waves or stray surface acoustic waves that reach the contour of this picture 82 are reflected and weakened in various directions. Any picture can be applied as long as its outline is formed by curved lines, or its angle causes diffuse reflection of the pseudo wave to various directions'. Alternatively, a pattern may be printed on the substrate 2 in these portions. Specific embodiments of the present invention have been described in detail above. However, the present invention is not limited to the foregoing specific embodiments. For example, the diffusion grating 50 can be formed by etching hydrofluoric acid. The diffusion grating 50 may also be formed by applying laser, sandblasting, or cutting by a chemical or physical movement process. In other words, the diffusion grating 50 may be formed by a trench instead of the protrusion. In this specific embodiment, the case where a surface acoustic wave generating device having the mode conversion elements 78, 80, 82, and 84 called a "grating type" has been described has been applied. However, the present invention is not limited to a device applying this type of surface 18 200530922 generating device. For example, the present invention can be applied to a wedge-shaped converter (not shown) that generates a surface wave by using a wedge-shaped transducer (not shown). The present invention can also be an electrode, and "= The FPC 4 used in the towel of the present invention can be attached to the substrate 2 at will. ^ And 'preferably, the electric vibrator is used J; Bu 1 wire curing adhesive is added. This allows the converter 8, 1 〇, 12, and j are about the mode conversion elements 78, 80, 82, and 84: It is confirmed that the surface acoustic wave before irradiation of the ultraviolet rays causing adhesion is the highest]. The pseudo wave scattering device can be used to cause diffuse reflection and weakening Type, as described above. Note that the two converters (sensors) 12 are provided close to each other in the embodiment. However, the converters 12 and 14 can be connected to the transfer converter 8. ， 00 之 '， 丨 U and Η are leaking, and the other converter; ^ == will suppress the noise picked up by another converter. Except =: ^ Nearly white, the controller 6 to the transmission converters 8 and 1 In addition, it can be reduced to suppress the sub-path from this electronic path. Therefore, the next m magnetic wave is emitted. In addition to the pseudo wave In the description of the 7-way weakening and elimination of the button scattering device, the pseudo wave scattering device will be described as follows: 'formed by printing breaks to form a product-like array H can be _ called a chemical or reflective wind screen 19 200530922 physical removal process, such as the process of etching hydrofluoric acid, applying laser, sandblasting, or cutting. The twelfth figure is a pseudo wave scattering device of the second embodiment for randomly scattering and eliminating pseudo waves Front view of a substrate formed thereon. The thirteenth figure is a partially enlarged view of a region of the substrate on which the pseudo wave scattering device is formed on the twelfth figure. The fourteenth figure is a third embodiment with a pseudo wave scattering device The front view of the substrate of the example. The fifteenth figure is a front view of the substrate on which the pseudo wave scattering device of the fourth embodiment similar to the fourteenth figure is formed. Note the twelfth, thirteenth, and tenth figures. Figure 4 and Figure 15 show the modification of the (touch panel) device shown in the first figure, in which the diffusion gratings 34, 36, and 38 have been modified by the second, third, and fourth embodiments. Replaced by pseudo wave scattering device. Other structures pass through this The specific embodiments are shared, so the same structure is represented by the same element symbol, and its description is omitted. Also note that in the twelfth to fifteenth figures, only important parts are shown, and other parts are omitted. 1. By random As an example, the scatter canceling pseudo wave will explain the case where the fine protrusions are randomly scattered (by the aforementioned printing method) on the substrate to form a pseudo wave scattering device. Note that as mentioned above, the low wave can be processed by chemical or physical trench processes (drilling Process) instead of the fine protrusions. As shown in Figures 12 and 13, the diffusing portions 100 and 102 are formed on the substrate 2a like a pseudo wave scattering device at its lateral edges 44, lower edges 45, and corners. The diffusing portion 100 is rectangular and extends along the lateral edge 44 and the lower edge 45. The diffuser 102 is formed in an L shape at the corner. All the diffusers 100, 100, and 102 are placed outside the reflective arrays 106 and 108. A large number of diffuse protrusions 104 are randomly scattered in the 20 200530922 diffuse portions 100, 100, and 102, that is, there is no regularity. The shape of the diffusion protrusion 104 is rectangular in a plan view. However, the diffusing portion 104 is not limited to a rectangle, and may be any desired shape, such as a circle, an oval, or a polygon. The diffusion portions 104 may be the same size, or the diffusion protrusions 104 may be different sizes and shapes. The dispersion of the diffuse projection 104 is set here so that the pseudo wave (for example, a parasitic echo) is sufficiently scattered and eliminated (so that it is not detected as noise by the sensor). The cases where the scattering portions 100, 100, and 0 10 2 of the group of the diffusing protrusions 104 scatter and eliminate a pseudo wave propagating along the surface of the substrate 2a are the same as those in the above-mentioned specific embodiment. Therefore, detailed description will be omitted. Note that the pseudo wave travels along its path 130, 132, 134, 136 until it is eliminated, as shown in the twelfth figure. 2. Eliminating pseudo waves by coherent scattering In a method in which a pseudo wave scattering device and a reflective array are formed on a substrate by printing glass particles in the form of a paste, the height of the ridge of the pseudo wave scattering device is equal to that of the reflection array. The oblique lines must match substantially (for example, at a height of 5 // m to 10 // m). In addition, we want to weaken and eliminate the pseudo wave in the limited area. In this case, the weakening and elimination of the artifacts can be performed more effectively by forming a diffusion grating that produces a coherent scattering effect. Here, it is known that the frequency and wavelength of a pseudo wave transmitted from a converter and propagating through the substrate are 5.5 MHz and about 570 / zm, respectively (in the case of a soda glass substrate). Take advantage of these facts. As shown in the fourteenth figure, the diffusion gratings 110a and 11 Ob are formed along the lateral edge 44 of a substrate 2b. The diffusion gratings 110c and 110d are formed along 21 200530922 along the lower edge 45 of the substrate 2b. Note that the diffusion gratings 110a, 110b, 110c, and 110d will be collectively referred to as the diffusion grating 110. The diffusion grating 110 is provided near an edge of the substrate 2b with respect to the mode conversion elements 78, 80, 82, and 84. The diffusing grating 11 is similar to the diffusing gratings 43 and 49 and includes an outwardly inclined line 112. The oblique lines 112 are provided parallel to each other, and their oblique angles are smaller than those of the diffusion gratings 43 and 49. With the configuration of the oblique line 112, the diffusion grating no functions to scatter and eliminate pseudo waves by coherently scattering Rayleigh waves (surface acoustic waves). That is, the Rayleigh waves scatter and cancel when they interfere with each other. 3. Elimination of pseudo waves by coherent scattering by converting Rayleigh waves to body waves. The above-mentioned description in heading 2 does not convert already, s: Rayleigh waves (surface acoustic waves) into pseudo waves into different forms. Rilip. However, the method of converting a Rayleigh wave (surface acoustic wave) from a component vibrating perpendicularly to the substrate surface into a body wave is also effective. That is, the propagation direction of the pseudo wave is changed or scattered, and it is scattered to the body wave that propagates when the substrate bounces between the front and rear surfaces. Unlike surface acoustic waves, body waves do not travel very fast along horizontal surfaces, nor do they risk long distances. Therefore, artifacts can be weakened and eliminated faster. The conversion of surface acoustic wave to body wave in the field of acoustics refers to "connecting the Ripple to Lamb mode". The diffused light phase 120 (120a, 120b, 120c, and 120d) formed on the substrate 2c as shown in FIG. 15 is similar to the diffusion grating (see FIG. 14), and is used for explanation under the above title 2. The coherent dispersal removes pseudo waves. However, the interval between the inclined lines constituting the diffusion grating is different in the width of the inclined lines. In addition, the direction of the oblique line (angle ^ 22 200530922 is the same as the direction (angle) of the oblique line 112, or it may be different. As described above, various structures can be applied to scatter and eliminate pseudo waves. Scattering device. Note that in the above specific embodiment, a flexible printed circuit (FPC) is applied as the wiring of the electronic circuit mounted on the substrate. However, a flexible flat cable (FPC) can also be applied as the wiring.
23 200530922 【圖式簡單說明】 第一圖係觸控面板之前視圖，係利用於本發明之聲 波接觸檢測裝置中。 第二圖係前視圖，顯示附加至基板之撓性印刷電路 (FPC) 〇 第三圖係概略平面圖，顯示該FPC之整體。 第四圖係第三圖中由B指示之FPC部分之放大圖。 第五圖係反射陣列之前視圖，對應至第一圖。 第六圖係模式轉換元件與漫射光柵之前視圖，對應 至第一圖。 第七圖係該反射陣列與該漫射光柵之部分放大圖。 第八圖係該反射陣列與該漫射光栅之另一部分放 大圖。 第九圖係該漫射光柵之另一形式之放大圖。 第十圖係前視圖，顯示該漫射光柵與該反射陣列之 相對位置。 第十一圖係第一圖之基板之概略部分放大圖，自箭 頭A之方向檢視。 第十二圖係用以隨機散射與消除偽波之偽波散射 裝置已形成於其上之基板之前視圖。 第十三圖係該偽波散射裝置形成於第十二圖之基 板上之區域之部分放大圖。 第十四圖係偽波散射裝置之另一具體實施例之基 板之前視圖。 24 200530922 第十五圖係偽波散射裝置類似於第十四圖形成於 其上之基板之前視圖。 【主要元件符號說明】 1 裝置 2 基板 3 觸控面板 4 撓性印刷電路 4a FPC分支 4b FPC分支 6 控制器 8 轉換器 10 轉換器 12 轉換器 14 轉換器 16 傾斜線 18 反射陣列 20 傾斜線 22 反射陣列 24 上邊緣 26 傾斜線 28 反射陣列 30 傾斜線 32 反射陣列 33 反射陣列 34 矩形部23 200530922 [Brief description of the drawings] The first figure is a front view of a touch panel and is used in the acoustic wave contact detection device of the present invention. The second figure is a front view showing a flexible printed circuit (FPC) attached to a substrate. The third figure is a schematic plan view showing the entire FPC. The fourth figure is an enlarged view of the FPC part indicated by B in the third figure. The fifth diagram is a front view of the reflection array, and corresponds to the first diagram. The sixth diagram is a front view of the mode conversion element and the diffusion grating, corresponding to the first diagram. The seventh figure is a partial enlarged view of the reflection array and the diffusion grating. The eighth figure is an enlarged view of another part of the reflection array and the diffusion grating. The ninth figure is an enlarged view of another form of the diffusion grating. The tenth figure is a front view showing the relative position of the diffusion grating and the reflection array. The eleventh figure is an enlarged view of the outline of the substrate of the first figure, viewed from the direction of the arrow A. The twelfth figure is a front view of a substrate on which a pseudo wave scattering device for random scattering and elimination of pseudo waves has been formed. The thirteenth figure is an enlarged view of a part of the area where the pseudo wave scattering device is formed on the base plate of the twelfth figure. Fig. 14 is a front view of a substrate of another embodiment of the pseudo wave scattering device. 24 200530922 The fifteenth figure is a front view of a pseudo wave scattering device similar to the substrate on which the fourteenth figure is formed. [Description of main component symbols] 1 Device 2 Substrate 3 Touch panel 4 Flexible printed circuit 4a FPC branch 4b FPC branch 6 Controller 8 Converter 10 Converter 12 Converter 14 Converter 16 Inclined line 18 Reflection array 20 Inclined line 22 Reflective array 24 Upper edge 26 Slanted line 28 Reflected array 30 Slanted line 32 Reflected array 33 Reflected array 34 Rectangular section
25 200530922 36 38 40 42 43 44 45 46 48 49 50 矩形部 矩形部 傾斜線 傾斜線 漫射光柵 橫向邊緣 下邊緣 傾斜線 傾斜線 漫射光栅 漫射光柵25 200530922 36 38 40 42 43 44 45 46 48 49 50 Rectangular section Rectangular section Slanted line Slanted line Diffuse grating Lateral edge Bottom line Slanted line Slanted line Diffuse grating Diffuse grating
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