201246029 六、發明說明： 【發明所屬之技術領域】 一種工作穩 本發明是有關於-種觸控面板，特別是指 定可靠的觸控面板。 【先前技術】 現有的電機產品出於美觀和操作輕便的考慮，在控制 台中日益採用觸控方式，也就是在電機產品的面板上設置 有顯示圖樣，再通過在面板下方設置電容或電阻式觸控感 測器來感應操作者手指的操作，並轉換成相應的電信號傳 送給一觸控控制電路，該觸控控制電路可相應地控制對應 發光裝置的發光狀態，該發光裝置發出的光線可以照亮面 板上的顯示圖樣，該觸控控制電路還可將相應的信號送給 主控制電路來控制電機產品的工作狀態，從而有效地實現 人機互動’提高電子產品的操控便利性。 在臺灣新型專利公告第M343209號中揭露了一種觸控 面板顯示裝置，主要包含有：一觸控控制電路，其電連接 有至少一觸控感測器以及對應之發光裝置，該觸控感測器 可以感應操作者的近接而對應產生感應訊號以傳遞給觸控 控制電路’進而以控制該發光裝置之明滅；一主面板，該 主面板之對應於前述發光裝置之位置設有光孔，發光裝置 則是設置在光孔之一側邊；一錄板，在該銘板上設有面板 之顯示圖樣；一導光裝置，設置於該光孔；當操作觸控感 測器使得發光裝置發光時，光線透過導光裝置平均地散射 於光孔内並折射於銘板。 201246029 這種現有的觸控面板是將觸控感測器以及相應的觸控 控制電路集成排布在一塊印刷電路板上，由於觸控感測器 較容易受到與其鄰接的觸控控制電路所產生的電磁雜訊的 影響’觸控感測器在受到干擾後其感應信號將會上下波動 ’進一步可能導致觸控控制電路發出錯誤的工作指令；並 且如果還是採用這種傳統式的一板式設計，要有效地減少 或消除觸控控制電路對觸控感測器的電磁干擾，無論是在 設計、元件的選擇還是製造過程中’均需要提出很高的品 質要求和付出很多的努力，從而大大提升製造成本。 可見，現有的觸控面板存在的缺陷在於要麼是降低觸 控感測器對抗電磁干擾能力的要求水準而導致觸控面板的 工作可靠性較差；要麼是為提高觸控感測器的抗電磁干擾 能力而大大提升製造成本。 【發明内容】 本發明所要解決的技術問題在於克服上述現有技術存 在的不足’而提出一種觸控面板，該觸控面板能夠用較低 的成本來有效地提南觸控感測器的抗干擾能力，從而提高 其工作的穩定可靠性。 本發明針對上述技術問題而提出一種觸控面板，包括 一主面板和裝設在該主面板下方的一發光觸控模組；該發 光觸控模組至少包括一第一電路板，該第一電路板在該主 面板的下方對應設置有多個觸控感測器和多個發光裝置， 這些觸控感測器是用於感應一操作者的近接而對應產生一 感應信號’並將感應信號傳送給一觸控控制電路，用以控 201246029 制相應發光裝置的發光狀態；該發光觸控模組還包括一第 一電路板，該第二電路板與第一電路板電性連接在一起， 該觸控控制電路是設置在該第二電路板上，該第二電路板 與第一電路板在空間上間隔一段距離，以減少該觸控控制 電路對觸控感測器的電磁干擾。 該發光觸控模組還包括與該第一電路板呈並列設置的 一顯示模組，該第二電路板是裝設在該顯示模組的下方， 與第一電路板之間形成一高度差，該第二電路板是通過連 接器與第一電路板電性連接在一起。 該觸控控制電路包括一微處理器控制電路和一發光裝 置控制電路，構成該觸控控制電路的電子元件是裝設在該 第二電路板的背離該主面板的底面；這些觸控感測器是裝 設在該第一電路板的朝向該主面板的頂面。 與現有技術相比，本發明的觸控面板的有益效果包括 :通過將觸控感測器設置在第一電路板上，而將觸控控制 電路設置第二電路板上，從而可以減少觸控控制電路對觸 控感測器的電磁干擾，防止觸控感測器產生錯誤的感應信 號，從而可以用較低的成本來提高觸控面板的工作可靠性 〇 【實施方式】 有關本發明之前述及其他技術内容、特點與功效，在 以下配合參考圖式之較佳實施例的詳細說明中，將可清楚 的呈現。 下面結合附圖，以應用在洗衣機上的觸控面板為例， 201246029 對本發明予以進一步地詳盡闡述。 如圖1至圖8所示，本發明的觸控面板包括一主面板i 、裝設在該主面板1下方的一發光觸控模組2以及裝設在 該主面板1上的電源開關4 ° 該觸控面板上主要設置有兩種不同類型的觸控顯示模 式，第一類是較為傳統的觸控與顯示一體結合型，第二類 是本發明獨創的組合觸控區域114與組合顯示區域丨丨5的對 應型。 該主面板1是一透明的塑膠件，由丙烯腈_ 丁二稀笨乙 稀樹脂（ABS)製成，為一整體僅下端開口的框體結構，具 有一基部11和由該基部11的四周向下延伸出的側板12。 5亥發光觸控模組2是收容在該基部11與四側板12包圍形成 的腔體内》該基部11只在一個角落上開設有用於裝設電源 開關4的開孔’在裝設到洗衣機時’只需要在開孔處進行 必要的處理即可實現防水防塵，防止發光觸控模組2受損 〇 基部11上設有對應於上述第一類觸控模式的多個第一 觸控顯示區域11丨、一顯示視窗112以及對應於上述第二類 觸控模式的一個第二觸控顯示區域113。 第二觸控顯示區域113主要包括一環形的組合觸控區域 114及與該組合觸控區域114相對應的一組合顯示區域115 ’該組合顯示區域115包括設置在該組合觸控區域114左右 兩側的多個子顯示單元118，每個子顯示單元118上印製有 相應的功能顯示圖樣（圖未示出，其可以分別對應於洗衣 201246029 機的一種洗衣模式第 形的組合觸控區域114 116。 二觸控顯示區域113還包括位於環 中央的一功能執行用觸控顯示區域 基部11的下表面在不料光的部位印刷有—層不透明 的油墨’在需要透光的部位，比如··第—觸控顯示區域⑴ 2組合顯示區域115中的子顯示…18由字元和/或圖 案構成的顯示圖樣的背面，貝印刷有_層透明的油墨，從 而構成透明窗的效果，在沒有光照的情況τ該顯示圖樣處 呈黑色’在有光線從透明窗背面照射出來時，則 示圖樣可見。 該發光觸控模組2包括一第一電路板21、若干導光件 22右干反光件23、一間隔件24、一主電路模組3以及裝 叹在6亥主電路模組3上的一觸控控制電路25。參見圖4至 圖8，第一電路板21的頂面在主面板丨的第_觸控顯示區 域ill的下方對應設置有第一觸控感測器211和第一發光裝 置212。第一電路板21的一侧還形成有一缺口 213。 參見圖7、圖9和圖10,第一電路板21在朝向主面板 1的頂面還設置有對應於主面板丨的組合觸控區域ιΐ4的多 個第二觸控感測器214、對應於功能執行用觸控顯示區域 116的一第三觸控感測器216、對應於組合顯示區域115的 子顯示單元118(見圖1)的多個第二發光裝置215以及對應 於組合觸控區域114及功能執行用觸控顯示區域116的兩個 第三發光裝置217。 參閱圖4〜7及圖10，本實施例中的第一觸控感測器 201246029 211、第二觸控感測器214及第三觸控感測器216都是電容 感應式的觸控感測器，而在其他實施例中也可能改為採用 電阻感應式的觸控感測器，這些第一觸控感測器211、第二 觸控感測器214及第三觸控感測器216可用於感應操作者（ 圖未示）的近接（例如手指的觸碰）而對應產生一感應信號 。其中在第一觸控顯示區域111與功能執行用觸控顯示區域 116的下方僅一一對應設置有一個觸控感測器；而在環形的 組合觸控區域114的對應下方（參見圖1〇)，多個第二觸控 感測器214是以首尾相互銜接的方式沿環形旋轉方向連續 排列在第一電路板21的正面；這些第二觸控感測器214共 有八個，其中相鄰的兩個第二觸控感測器214之間的分界 線呈雁尾形，這種分界結構有利於減少相鄰的兩個第二觸 控感測器214之間的信號串擾；每一個第二觸控感測器2丄4 是由設置在兩分界線之間的銅箔（圖未示出）與電氣的邏 輯地組成的。第一發光裝置212、第二發光裝置215及第三 發光裝置217較佳地採用發光二極體。 參閱圖7與圖8，導光件22是由pc塑膠（聚碳酸g旨） 製成的，其對應設置在主面板1的各個第一觸控顯示區域 111、組合觸控區域114、組合顯示區域115以及功能執行 用觸控顯示區域116的下方。其中導光件22的頂面較佳地 採用粗糙的霧面，有利於達到向上均勻投射光線的效果； 而底面較佳地採用光滑面，有利於通過全反射減少光線從 底面逃出從而降低衰減。該導光件22的側緣與第一發光裝 置212、第二發光裝置215或第三發光裝置217相貼接，從 201246029 而可以將第一發光裝置212、第二發光裝置215或第三發光 裝置217發出的光線平行地傳導到一定面積的範圍内，再 通過頂部的霧面均勻地向上投射到主面板丨的第一觸控顯 不區域111'组合顯示區域115、組合觸控區域114或功能 執仃用觸控顯示區域丨16上，從而顯現出主面板丨上的功能 顯示圖樣。 參閱圖6〜圖10，反光件23是對應設置在導光件22的 下方，其能夠將從導光件22底面散射出的光線再反射回導 光件22的頂面，以提高顯示圖樣的亮度。反光件23較佳 疋用反光油墨（例如白色油墨）印製在第一電路板21上的 層反光膜，其直接貼接設置在該導光件22的底面下方， 其中在第一觸控顯示區域1U及觸控顯示區域116的反光件 23是直接印製在第一觸控感測器211或第三觸控感測器216 的上方。這種反光膜相對通常的反光結構具有成本低廉、 …構輕薄的優點。通過在導光件22的下方設置反光件Μ 進仃反射’可以提高第一發光裝4 212、帛二發光裝置215 ，第二發光裝f 217的發光效率，從而增加第一觸控顯示 區域111、組合顯示區域115、組合觸控區域114以及功能 執仃用觸控顯示區域116的亮度，實現節能環保。 間隔件24是設置在主面板i的基部u與第一電路板 21之間’其是由不透光的材料（如黑色泡棉）製成的。該 間隔件24雙面帶膠，其頂面與主面板i的下表面黏連，其 底面與第-電路板21的上表面黏連。間隔件24可以對導 光件22起到阻隔光線和定位的作用，以有效防止不同顯示 201246029 區域之間發生串光和漏光的現象。間隔件24上對應設有多 個上下貫通的容置孔241，用以對應收容導光件22及第一 發光裝置212、第二發光裝置215或第三發光裝置217於其 内。 參見圖11，觸控控制電路25主要包括一微處理器控制 電路251和一發光裝置控制電路252。該微處理器控制電路 251疋由電源電路、微處理器及其附屬電路構成，微處理器 可以採用型號為CY8C22545的單片機。該發光裝置控制電 路252進一步可由移位暫存器、發光裝置驅動晶片及其它 電子元件構成’移位暫存器的型號可以採用74HC595D，發 光裝置驅動晶片的型號可以採用DS2003CMX。 請一併參見圖12和圖13’微處理器控制電路251可即 時監測上述各個第一觸控感測器2 U、第二觸控感測器2 j 4 及第三觸控感測器216的感應信號（在本實施例中對應於觸 控感測器的電容值）’並將其與設定的一閥值作比較，以判 斷各觸控感測器所對應功能按鍵的開關狀態，並把開關狀 態信號發送到外部介面以驅動洗衣機進行相應的操作。另 外，微處理器控制電路251還可以接收從外部介面發來的 發光裝置（LED)顯示狀態控制信號，再轉換成驅動信號發 送到發光裝置控制電路252。發光裝置控制電路252接收微 處理器控制電路251發出的信號，按信號邏輯準確地驅動 各個相應的發光裝置進入不同的發光狀態：全亮、半亮、 媳滅’從而在主面板1上顯示出不同的工作狀態。在實際 應用中，當操作者的手指從上方開始接近主面板1上的其 10 201246029 中—個第一觸控顯示區域m時，這個第一觸控顯示區域 1U下方的第一觸控感測器211的感應信號（在本實施例中 對應於觸控感測器的電容值）就會開始逐漸增加並將該感 應信號傳送給觸控控制電路25,當該觸控控制電路25監測 第觸控感測器211的電谷值超過設定的閥值時（此時 手指已經觸碰到或非常貼近這個第一觸控顯示區域m的表 面），該觸控控制電路25就可以對應控制該第一觸控感測 器211側緣的第一發光裝置212由初始的半亮發光狀態改變 為全亮發光狀態，從而改變主面板丨第一觸控顯示區域lu 上功能顯示圖樣的背光狀態，並同時將該操作資訊通知洗 衣機以進行相應的操作。 特別說明的是，在本較佳實施例中，該等子顯示單元 118的物理數量（共十六個）是多於該環形的組合觸控區域 114所對應的第二觸控感測器214的物理數量（共八個），當 操作者的手指移動到組合觸控區域114中的某一區域時，手 指附近區域的幾個相鄰的第二觸控感測器214的電容值就 會發生變化並將該感應信號傳送給觸控控制電路25，該觸 控控制電路25再對這些感應信號進行加總計算，並通過感 應檢測演算法計算出感應信號變化最強烈的相鄰組合從而 判斷出手指的觸控位置具體在哪一個第二觸控感測器214 的上方，甚至還可以進一步具體到觸控位置是在那一個第 二觸控感測器214的交界邊緣部分的上方還是中段部分的 上方’然後控制組合顯示區域115内與觸控位置相對應的子 顯示單元118下方的第二發光裝置215由初始未被選中的第 11 201246029 一發光狀態（在本實施例中對應於半亮發光狀態）改變為 被選中的第二發光狀態（在本實施例中對應於全亮發光狀 態），而其他未被選中的子顯示單元118下方的第二發光裝 置215仍然保持半亮發光狀態；這種設計方式使每一個物 理的第二觸控感測器214可以對應於組合顯示區域115中的 兩個相應的子顯示單元118 (每一個子顯示單元118對應於 一種特定的洗衣模式）’因而組合觸控區域114中的八個第 二觸控感測器214可以對應到組合顯示區域115中的十六個 子顯示單元118，從而可以降低第二觸控感測器2丨4的排布 密度來降低製造難度和製造成本。當然，也可以採用其他 感應檢測演算法使第二觸控感測器214與子顯示單元118建 立不一樣的映射關係’例如：初始值可以是任意一個子顯 不單元118全亮發光顯示，而當手指每滑過一個第二觸控感 測器214就自動切換到下一個相鄰的子顯示單元118全亮發 光顯示，而上一個子顯示單元118則恢復到半亮的狀態。這 樣一來，當操作者的手指沿著組合觸控區域114旋轉移動時 ，組合顯示區域115内被選中的相應子顯示單元118的第二 發光裝置215就會依次全亮，而未被選中的子顯示單元118 的第一發光裝置215就會依次恢復到原來半亮的狀態，這 種操作介面讓操作者可以很方便地在多種不同的洗衣模式 進行切換和選擇。最後當操作者的手指落在功能執行用觸 控顯示區域116後，第三觸控感測器216可以感應到操作者 手指的近接而對應產生一感應信號並將該感應信號傳送給 該觸控控制電路25，以控制第三發光裝置217全亮發光顯 12 201246029 示，與此同時洗衣機就可以啟動按照選中的洗衣模式進行 清洗’這種炫酷的操作介面相當靈動，有利於提供更好的 用戶體驗從而提升家電的質感’操作也極為便捷。 參閱圖2〜圖8與圖10 ’該主電路模組3包括一第二電 路板31、一線纜連接器32和與該第一電路板21呈並列設 置的一顯示模組33。 第二電路板31設置在第一電路板21的缺口 213的下 方’與第一電路板21之間形成一高度差，從而在空間上間 隔開一段距離，第二電路板31可通過連接器（圖未示出） 與第一電路板21電性連接在一起。在本較佳實施例中，該 觸控控制電路25是設置在第二電路板31上。通過第一電 路板21、第二電路板31的分立，可以在空間上將這些第一 觸控感測器211、第二觸控感測器214及第三觸控感測器 216與觸控控制電路25隔離，從而可以減少第二電路板31 上的觸控控制電路25所發出的電磁輻射對第一電路板21 上的第一觸控感測器211、第二觸控感測器214及第三觸控 感測器216造成干擾，從而防止觸控感測器的電容值上下 波動以致產生錯誤的感應信號，進一步導致觸控控制電路 25出現誤判操作。 線纜連接器32的一端可直接焊接在第二電路板31上 ，另一端可以與洗衣機中的其它電路相配接，比如與洗衣 機中的電機控制板連接，從而將觸控控制電路25捕獲的有 關操作信號送給洗衣機主控制電路來進行電機的運行控制 13 201246029 參閱圖2、圖7與圖8,顯示模組33是裝設在主面板j 的基部11上的顯示視窗112的對應下方。顯示模組33可以 是- LED發光模組’也可以是一 LCD發光模組，通過顯示 多種不同的發光圖案來提供洗衣機工作狀態的指示。顯示 模組33並列設置在第一電路板21 一側的缺口 213處。較 佳地，第二電路板31是直接焊接在顯示模組33的底面， 而構成觸控控制電路25的電子元件是設置在第二電路板31 的背離該主面板1的底面，將第二電路板31上的觸控控制 電路25與第一電路板21的觸控感測器設計成相互背離的 結構也可以進一步減少觸控控制電路25對觸控感測器的干 擾。另一方面，通過將顯示密度較高的顯示模組33和具有 觸控功能但顯示密度較低的發光觸控模組2結合應用在一 起’有利於改良觸控面板的按鍵佈局和降低成本。 綜上所述’與現有技術相比，本發明的觸控面板通過 將第一觸控感測器211、第二觸控感測器214及第三觸控感 測器216設置在第一電路板21上，而將觸控控制電路25 設置在另外一塊相對獨立的第二電路板31上，可以在空間 上將第一觸控感測器211、第二觸控感測器214及第三觸控 感測器216與觸控控制電路25間隔開一段距離，從而可減 少第二電路板31上的觸控控制電路25以及其他功率元件 對第一電路板21上的第一觸控感測器211、第二觸控感測 器214及第三觸控感測器216造成的電磁干擾，防止第一 觸控感測器211、第二觸控感測器214及第三觸控感測器 216產生錯誤的感應信號，從而可以用較低的成本來提高觸 14 201246029 控面板的工作可靠性。而在其他可能的實施例（圖未示出 • )中，籍由這種兩電路板的分立結構，也可以很方便地在 第二電路板的外周增加一遮罩結構（如遮罩鐵殼）來進一 步減少觸控控制電路對觸控感測器的干擾，故確實能達成 本發明之目的。 惟以上所述者，僅為本發明之較佳實施例而已，當不 能以此限定本發明實施之範圍，即大凡依本發明申請專利 範圍及發明說明内容所作之簡單的等效變化與修飾，皆仍 屬本發明專利涵蓋之範圍内。 【圖式簡單說明】 • 圖1是本發明觸控面板的一較佳實施例的立體圖； 圖2和圖3是該較佳實施例的兩個不同視角的立體分 解圖； 圖4是該較佳實施例在除去主面板後的俯視圖； 圖5是圖4中的α·Α向剖視圖； 圖6是圖5中的Β區域的局部放大圖； 圖7是該較佳實施例的立體分解圖； 圖8是該較佳實施例中第一電路板、顯示模組與第二 電路板的立體分解圖； 圖9是該較佳實施例中第一電路板的俯視圖； 圖10是圖9中的c區域的局部放大圖，其中對觸控感 測益區域做了部分透視處理以示意出各個觸控感測器的物 理分佈狀態； 圖11是該較佳實施例的觸控控制電路的原理框架圖； 15 201246029 圖12是該較佳實施例的觸控控制電路的主工作流程圖 ;及 圖13是該較佳實施例的觸控控制電路中的發光裝置控 制電路的顯示驅動流程圖。 16 201246029 【主要元件符號說明】 1 .......... 主面板 214… •…第二觸控感測器 11......... 基部 215… •…第二發光裝置 111 ....... 第一觸控顯示區 216… •…第三觸控感測器 域 217… •…第三發光裝置 112....... 顯示視窗 22·.... •…導光件 113....... 第二觸控顯示區 23··..· —反光件 域 24…… •…間隔件 114....... 組合觸控區域 241… •…容置孔 115....... 組合顯示區域 25…… •…觸控控制電路 116....... 功能執行用觸控 251 ·· •…微處理器控制電 顯示區域 路 118....... 子顯示單元 252 ··_ …·發光裝置控制電 12......... 側板 路 2 .......... 發光觸控模組 3 ....... •…主電路模組 21......... 第一電路板 31…… …·第二電路板 211 ....... 第一觸控感測器 32…… •…線纜連接器 212....... 第一發光裝置 33…… …·顯示模組 213....... 缺口 4 ....... •…電源開關 17201246029 VI. Description of the invention: [Technical field to which the invention pertains] An operational stability The present invention relates to a touch panel, and more particularly to a reliable touch panel. [Prior Art] Existing motor products are increasingly used in the console for aesthetics and light operation, that is, the display pattern is set on the panel of the motor product, and then the capacitor or resistive touch is set under the panel. Controlling the sensor to sense the operation of the operator's finger, and converting the corresponding electrical signal to a touch control circuit, the touch control circuit can correspondingly control the illumination state of the corresponding illumination device, and the light emitted by the illumination device can be Illuminating the display pattern on the panel, the touch control circuit can also send a corresponding signal to the main control circuit to control the working state of the motor product, thereby effectively realizing human-computer interaction 'improving the convenience of handling of the electronic product. A touch panel display device is disclosed in the above-mentioned Japanese Patent Publication No. M343209, which mainly includes: a touch control circuit electrically connected with at least one touch sensor and corresponding light-emitting device, the touch sensing The device can sense the proximity of the operator and correspondingly generate an inductive signal for transmission to the touch control circuit to further control the illumination device; and a main panel having a light hole corresponding to the position of the illumination device and emitting light The device is disposed at one side of the light hole; a recording board is provided with a display pattern of the panel; a light guiding device is disposed at the light hole; and when the touch sensor is operated to cause the light emitting device to emit light The light is evenly scattered in the aperture through the light guiding means and refracted on the nameplate. 201246029 The existing touch panel integrates the touch sensor and the corresponding touch control circuit on a printed circuit board, because the touch sensor is more susceptible to the touch control circuit adjacent thereto. The effect of electromagnetic noise 'the touch sensor will fluctuate up and down after being disturbed' may further cause the touch control circuit to issue erroneous work instructions; and if this traditional one-board design is adopted, To effectively reduce or eliminate the electromagnetic interference of the touch control circuit to the touch sensor, no matter in the design, component selection or manufacturing process, it is necessary to put forward high quality requirements and put a lot of effort, which greatly enhances manufacturing cost. It can be seen that the existing touch panel has the defects that the touch sensor is less reliable than the electromagnetic interference capability, and the touch panel has poor operational reliability; or the touch sensor is improved in electromagnetic interference resistance. The ability to greatly increase manufacturing costs. SUMMARY OF THE INVENTION The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art described above, and to provide a touch panel capable of effectively improving the anti-jamming of the south touch sensor with low cost. Ability to improve the stability and reliability of its work. The present invention is directed to a touch panel, which includes a main panel and a light-emitting touch module mounted under the main panel. The light-emitting touch module includes at least a first circuit board, the first The circuit board is provided with a plurality of touch sensors and a plurality of light-emitting devices under the main panel. The touch sensors are used to sense an operator's proximity and correspondingly generate an inductive signal and transmit the sensing signal. The illuminating touch module further includes a first circuit board electrically connected to the first circuit board, The touch control circuit is disposed on the second circuit board, and the second circuit board is spatially spaced apart from the first circuit board to reduce electromagnetic interference of the touch control circuit on the touch sensor. The illuminating touch module further includes a display module disposed in parallel with the first circuit board, the second circuit board being mounted under the display module and forming a height difference from the first circuit board The second circuit board is electrically connected to the first circuit board through a connector. The touch control circuit includes a microprocessor control circuit and a light-emitting device control circuit, and the electronic components constituting the touch control circuit are mounted on a bottom surface of the second circuit board facing away from the main panel; The device is mounted on a top surface of the first circuit board facing the main panel. Compared with the prior art, the beneficial effects of the touch panel of the present invention include: setting the touch control circuit on the second circuit board by placing the touch sensor on the first circuit board, thereby reducing touch The electromagnetic interference of the control circuit to the touch sensor prevents the touch sensor from generating an erroneous sensing signal, so that the operational reliability of the touch panel can be improved at a lower cost. [Embodiment] And other technical contents, features, and effects will be apparent from the following detailed description of the preferred embodiments of the drawings. The present invention will be further elaborated in the following with reference to the accompanying drawings, taking a touch panel applied to a washing machine as an example, 201246029. As shown in FIG. 1 to FIG. 8 , the touch panel of the present invention includes a main panel i , an illuminated touch module 2 mounted under the main panel 1 , and a power switch 4 mounted on the main panel 1 . ° The touch panel is mainly provided with two different types of touch display modes. The first type is a combination of more traditional touch and display, and the second type is the original combined touch area 114 and combined display of the present invention. Corresponding type of area 丨丨5. The main panel 1 is a transparent plastic member made of acrylonitrile-butylidene resin (ABS), which is a frame structure having only a lower end open, having a base portion 11 and surrounded by the base portion 11. The side panels 12 extend downward. The 5 illuminating touch module 2 is housed in a cavity formed by the base 11 and the four side plates 12. The base 11 is provided with an opening for mounting the power switch 4 at only one corner. When it is necessary to perform the necessary processing at the opening, it is waterproof and dustproof, and the light-sensitive touch module 2 is prevented from being damaged. The base 11 is provided with a plurality of first touch displays corresponding to the first type of touch mode. The area 11A, a display window 112, and a second touch display area 113 corresponding to the second type of touch mode. The second touch display area 113 includes a ring-shaped combined touch area 114 and a combined display area 115 corresponding to the combined touch area 114. The combined display area 115 includes two left and right sides of the combined touch area 114. A plurality of sub-display units 118 on the side, each of the sub-display units 118 is printed with a corresponding function display pattern (not shown, which may correspond to a combined touch area 114 116 of a laundry mode of the laundry 201246029, respectively. The touch display area 113 further includes a lower surface of the function display touch display area base 11 at the center of the ring, and a layer of opaque ink is printed on the portion where light is not needed, such as ··· The touch display area (1) 2 combines the sub display ... 18 in the display area 115 to display the back side of the display pattern composed of characters and/or patterns, and the shell prints a layer of transparent ink, thereby forming the effect of the transparent window, without illumination. In the case τ, the display pattern is black. When there is light shining from the back of the transparent window, the pattern is visible. The illuminated touch module 2 includes a first The circuit board 21, the plurality of light guides 22, the right dry reflector 23, a spacer 24, a main circuit module 3, and a touch control circuit 25 mounted on the 6-inch main circuit module 3. See Fig. 4 8 is a top surface of the first circuit board 21 corresponding to the first touch sensor 211 and the first light emitting device 212 under the first touch display area ill of the main panel 。. One of the first circuit boards 21 The side is further formed with a notch 213. Referring to Figures 7, 9, and 10, the first circuit board 21 is further provided with a plurality of second touches corresponding to the combined touch area ι4 of the main panel 在 on the top surface of the main panel 1. The control sensor 214, a third touch sensor 216 corresponding to the function performing touch display area 116, and a plurality of second light emitting devices corresponding to the sub display unit 118 (see FIG. 1) of the combined display area 115 215 and two third illuminating devices 217 corresponding to the combined touch area 114 and the function performing touch display area 116. Referring to FIGS. 4-7 and 10, the first touch sensor 201246029 211 in this embodiment The second touch sensor 214 and the third touch sensor 216 are capacitive sensing touch sensors. In other embodiments, a resistive touch sensor may be used instead. The first touch sensor 211, the second touch sensor 214, and the third touch sensor 216 may be used. A proximity signal (such as a touch of a finger) of the sensor operator (not shown) is generated to generate a sensing signal, wherein the first touch display area 111 and the function execution touch display area 116 are only one-to-one correspondingly disposed. a touch sensor; and correspondingly below the annular combined touch area 114 (see FIG. 1A), the plurality of second touch sensors 214 are continuously arranged in a circular rotation direction in a manner that the first and the last are connected to each other. The front surface of the first circuit board 21; the second touch sensors 214 have a total of eight, wherein the boundary between the adjacent two second touch sensors 214 is a goose-tail shape, and the boundary structure is favorable for Reducing signal crosstalk between two adjacent second touch sensors 214; each of the second touch sensors 2丄4 is made of copper foil (not shown) disposed between the two boundaries Logically composed with electrical. The first illuminating device 212, the second illuminating device 215, and the third illuminating device 217 preferably employ a light emitting diode. Referring to FIG. 7 and FIG. 8 , the light guide member 22 is made of pc plastic (polycarbonate), and is correspondingly disposed on each of the first touch display regions 111 of the main panel 1 , the combined touch region 114 , and the combined display. The area 115 and the function display touch display area 116 are below. The top surface of the light guiding member 22 preferably adopts a rough matte surface, which is beneficial to achieve uniform upward projection of light; and the bottom surface preferably adopts a smooth surface, which is beneficial for reducing light from the bottom surface by total reflection to reduce attenuation. . The side edge of the light guiding member 22 is attached to the first light emitting device 212, the second light emitting device 215 or the third light emitting device 217, and the first light emitting device 212, the second light emitting device 215 or the third light emitting device may be from 201246029. The light emitted by the device 217 is parallelly transmitted to a certain area, and then uniformly projected upward through the matte surface of the top to the first touch display area 111 of the main panel, the combined display area 115, the combined touch area 114 or The function is displayed on the touch display area 丨16, thereby showing the function display pattern on the main panel 。. Referring to FIG. 6 to FIG. 10, the reflector 23 is disposed under the light guide 22, and can reflect the light scattered from the bottom surface of the light guide 22 back to the top surface of the light guide 22 to improve the display pattern. brightness. The reflector 23 is preferably a reflective film printed on the first circuit board 21 by a reflective ink (for example, white ink), and is directly attached under the bottom surface of the light guide 22, wherein the first touch display The reflectors 23 of the area 1U and the touch display area 116 are directly printed on the first touch sensor 211 or the third touch sensor 216. Such a reflective film has the advantages of low cost, light weight and thinness compared to a conventional retroreflective structure. The light-emitting efficiency of the first illuminating device 4 212, the second illuminating device 215, and the second illuminating device f 217 can be improved by providing a reflector Μ reflection ' under the light guiding member 22, thereby increasing the first touch display region 111. The combination display area 115, the combined touch area 114, and the brightness of the touch display area 116 for function execution realize energy saving and environmental protection. The spacer 24 is disposed between the base u of the main panel i and the first circuit board 21, which is made of an opaque material such as black foam. The spacer 24 is double-sided taped, the top surface of which is adhered to the lower surface of the main panel i, and the bottom surface thereof is adhered to the upper surface of the first circuit board 21. The spacer 24 can block light and position the light guide 22 to effectively prevent crosstalk and light leakage between the different displays 201246029. A plurality of upper and lower accommodating holes 241 are defined in the spacers 24 for correspondingly accommodating the light guide 22 and the first illuminating device 212, the second illuminating device 215 or the third illuminating device 217. Referring to Figure 11, touch control circuit 25 mainly includes a microprocessor control circuit 251 and a light device control circuit 252. The microprocessor control circuit 251 is composed of a power supply circuit, a microprocessor and its associated circuits, and the microprocessor can be a single-chip microcomputer of the type CY8C22545. The illuminating device control circuit 252 can be further constituted by a shift register, a illuminating device driving chip and other electronic components. The model of the shift register can be 74HC595D, and the model of the illuminating device driving chip can adopt the DS2003CMX. Please refer to FIG. 12 and FIG. 13 'the microprocessor control circuit 251 for monitoring the first touch sensor 2 U, the second touch sensor 2 j 4 and the third touch sensor 216 in real time. The sensing signal (corresponding to the capacitance value of the touch sensor in the embodiment) is compared with a set threshold value to determine the switching state of the function button corresponding to each touch sensor, and The switch status signal is sent to the external interface to drive the washing machine to perform the corresponding operation. In addition, the microprocessor control circuit 251 can also receive a light-emitting device (LED) display state control signal sent from the external interface, and convert it into a drive signal for transmission to the light-emitting device control circuit 252. The illuminating device control circuit 252 receives the signal from the microprocessor control circuit 251, and accurately drives each of the corresponding illuminating devices to enter different illuminating states according to the signal logic: full bright, semi-bright, annihilated 'to display on the main panel 1 Different working conditions. In a practical application, when the operator's finger approaches the first touch display area m of the 10 201246029 on the main panel 1 from the top, the first touch sensing under the first touch display area 1U The sensing signal of the device 211 (in this embodiment, the capacitance value corresponding to the touch sensor) begins to gradually increase and transmits the sensing signal to the touch control circuit 25, and the touch control circuit 25 monitors the touch. When the electric valley of the sensor 211 exceeds the set threshold (the finger has touched or is very close to the surface of the first touch display area m), the touch control circuit 25 can control the corresponding The first light-emitting device 212 of the side edge of the touch sensor 211 is changed from the initial semi-bright state to the full-bright state, thereby changing the backlight state of the function display pattern on the main panel 丨 first touch display area lu, and At the same time, the operation information is notified to the washing machine to perform corresponding operations. Specifically, in the preferred embodiment, the physical number of the sub-display units 118 (the total of sixteen) is more than the second touch sensor 214 corresponding to the combined touch area 114 of the ring. The physical quantity (eight in total), when the operator's finger moves to a certain area in the combined touch area 114, the capacitance value of several adjacent second touch sensors 214 in the vicinity of the finger will A change occurs and the sensing signal is transmitted to the touch control circuit 25, and the touch control circuit 25 performs a total calculation on the sensing signals, and calculates an adjacent combination of the strongest changes in the induced signals by the inductive detection algorithm to determine Which of the second touch sensors 214 is located above the touch position of the finger, and even further whether the touch position is above or in the middle of the boundary edge portion of the second touch sensor 214 The upper portion of the portion is then controlled to display the second illumination device 215 under the sub-display unit 118 corresponding to the touch position in the combined display region 115 from the initially unselected 11th 201246029 illumination state ( In this embodiment, corresponding to the semi-bright illumination state) is changed to the selected second illumination state (corresponding to the full-bright illumination state in this embodiment), and the other second sub-display unit 118 is not selected. The illumination device 215 remains in a semi-bright illumination state; this design allows each physical second touch sensor 214 to correspond to two corresponding sub-display units 118 in the combined display area 115 (each sub-display unit 118 corresponds to a specific laundry mode) 'The eight second touch sensors 214 in the combined touch area 114 can correspond to the sixteen sub-display units 118 in the combined display area 115, so that the second touch can be lowered The arrangement density of the sensors 2丨4 is controlled to reduce manufacturing difficulty and manufacturing cost. Of course, other sensing detection algorithms may be used to establish a different mapping relationship between the second touch sensor 214 and the sub-display unit 118. For example, the initial value may be any one of the sub-display units 118. When the finger slides over a second touch sensor 214, it automatically switches to the next adjacent sub-display unit 118 to fully illuminate the display, and the previous sub-display unit 118 returns to the semi-bright state. In this way, when the operator's finger rotates along the combined touch area 114, the second illumination device 215 of the selected corresponding sub-display unit 118 in the combined display area 115 will be fully illuminated in turn, but not selected. The first illumination device 215 of the sub-display unit 118 is sequentially restored to the original semi-bright state. This operation interface allows the operator to conveniently switch and select among a plurality of different laundry modes. Finally, when the operator's finger falls on the function performing touch display area 116, the third touch sensor 216 can sense the proximity of the operator's finger and correspondingly generate a sensing signal and transmit the sensing signal to the touch. The control circuit 25 controls the third illuminating device 217 to be fully illuminated illuminating 12 201246029, while the washing machine can start cleaning according to the selected laundry mode. This cool operation interface is quite flexible, which is beneficial to provide better The user experience thus enhances the texture of the home appliance' operation is also extremely convenient. Referring to Figures 2-8 and 10', the main circuit module 3 includes a second circuit board 31, a cable connector 32, and a display module 33 disposed in parallel with the first circuit board 21. The second circuit board 31 is disposed under the gap 213 of the first circuit board 21 to form a height difference from the first circuit board 21 so as to be spatially spaced apart by a distance, and the second circuit board 31 can pass through the connector ( The figure is not shown) electrically connected to the first circuit board 21. In the preferred embodiment, the touch control circuit 25 is disposed on the second circuit board 31. The first touch sensor 211, the second touch sensor 214, and the third touch sensor 216 and the touch can be spatially separated by the separation of the first circuit board 21 and the second circuit board 31. The control circuit 25 is isolated, so that the electromagnetic radiation emitted by the touch control circuit 25 on the second circuit board 31 can be reduced to the first touch sensor 211 and the second touch sensor 214 on the first circuit board 21. The third touch sensor 216 causes interference, thereby preventing the capacitance value of the touch sensor from fluctuating up and down to generate an erroneous sensing signal, which further causes the touch control circuit 25 to perform a misjudgment operation. One end of the cable connector 32 can be directly soldered to the second circuit board 31, and the other end can be matched with other circuits in the washing machine, such as a motor control board in the washing machine, thereby capturing the touch control circuit 25 The operation signal is sent to the main control circuit of the washing machine to perform the operation control of the motor. 13 201246029 Referring to Figures 2, 7 and 8, the display module 33 is mounted below the display window 112 of the base 11 of the main panel j. The display module 33 can be an LED lighting module or an LCD lighting module that provides an indication of the operating state of the washing machine by displaying a plurality of different lighting patterns. The display module 33 is juxtaposed on the notch 213 on the side of the first circuit board 21. Preferably, the second circuit board 31 is directly soldered to the bottom surface of the display module 33, and the electronic components constituting the touch control circuit 25 are disposed on the bottom surface of the second circuit board 31 facing away from the main panel 1, and the second The structure in which the touch control circuit 25 on the circuit board 31 and the touch sensor of the first circuit board 21 are designed to face away from each other can further reduce the interference of the touch control circuit 25 on the touch sensor. On the other hand, by combining the display module 33 having a higher display density and the illuminating touch module 2 having a lower touch function but having a lower display density, it is advantageous to improve the key layout of the touch panel and reduce the cost. In summary, the touch panel of the present invention is disposed in the first circuit by the first touch sensor 211, the second touch sensor 214, and the third touch sensor 216. On the board 21, the touch control circuit 25 is disposed on another relatively independent second circuit board 31, and the first touch sensor 211, the second touch sensor 214, and the third space can be spatially disposed. The touch sensor 216 is spaced apart from the touch control circuit 25 to reduce the first touch sensing on the first circuit board 21 by the touch control circuit 25 and other power components on the second circuit board 31. The electromagnetic interference caused by the second touch sensor 211, the second touch sensor 214 and the third touch sensor 216 prevents the first touch sensor 211, the second touch sensor 214 and the third touch sensing The 216 generates an erroneous sensing signal, thereby improving the operational reliability of the touch panel 201246029 with a lower cost. In other possible embodiments (not shown), it is also convenient to add a mask structure (such as a mask iron shell) to the outer periphery of the second circuit board by the discrete structure of the two circuit boards. In order to further reduce the interference of the touch control circuit on the touch sensor, the object of the present invention can be achieved. The above is only the preferred embodiment of the present invention, and the scope of the invention is not limited thereto, that is, the simple equivalent changes and modifications made by the scope of the invention and the description of the invention are All remain within the scope of the invention patent. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a preferred embodiment of a touch panel of the present invention; FIGS. 2 and 3 are exploded perspective views of two different viewing angles of the preferred embodiment; FIG. Figure 5 is a cross-sectional view of the Α-Α in Figure 4; Figure 6 is a partially enlarged view of the Β region of Figure 5; Figure 7 is an exploded perspective view of the preferred embodiment of the preferred embodiment; 8 is an exploded perspective view of the first circuit board, the display module, and the second circuit board in the preferred embodiment; FIG. 9 is a plan view of the first circuit board in the preferred embodiment; FIG. A partial enlarged view of the c-region, wherein a partial perspective processing is performed on the touch-sensing benefit region to indicate the physical distribution state of each touch sensor; FIG. 11 is a principle of the touch control circuit of the preferred embodiment 15 201246029 FIG. 12 is a main operational flowchart of the touch control circuit of the preferred embodiment; and FIG. 13 is a display driving flowchart of the illumination device control circuit in the touch control circuit of the preferred embodiment. 16 201246029 [Description of main component symbols] 1 .......... Main panel 214... •...Second touch sensor 11......... Base 215... •...Second illumination Device 111....... First touch display area 216... • ... third touch sensor field 217... • ... third light emitting device 112....... Display window 22... • Light guide 113....... Second touch display area 23··..·-Reflector field 24... •... Spacer 114....... Combination touch area 241 ... •... accommodating hole 115....... Combination display area 25... •...Touch control circuit 116....... Function execution touch 251 ·· •...Microprocessor control electric display Regional road 118....... Sub display unit 252 ··· ...·Lighting device control power 12.... Side board road 2 .......... Light touch mode Group 3 ....... •... Main circuit module 21......... First circuit board 31...... .... Second circuit board 211 ....... First touch Sensor 32... • Cable connector 212....... First light-emitting device 33...... .... Display module 213....... Notch 4 . . . ...power switch 17