201017606 九、發明說明： 【發明所屬之技術領域】 本發明，有關於—種觸碰感測器及其觸碰式顯示面 板，且特別是㈣於-制關受壓所產生之感應通道的 觸碰感測器及其觸碰式顯示面板。 【先前技術】 觸碰式顯示面板之技術已廣泛地應用在電子裝置 .中，舉凡手機、筆記型電腦、音樂播放器（Mp3)、個人數 位助理(PDA)、全球衛星定位系統(Gps)、超迷你電腦 (UMPC)等可攜式電子產品中，皆可窺視觸碰式顯示面板 之應用領域之一隅。 傳統上之觸碰式顯示面板之技術原理，主要分為電阻 式及電容式等感應方式。電阻式感應方式之原理為，於顯 不面板表面覆蓋分開的兩層透明的導電薄膜例如是薄膜 電阻，當顯示面板受外部施壓時，將使得導電薄膜相互碰 觸而產生電壓變化。電容式感應方式之原理為，於顯示面 板鍍上多層透明的導電薄膜，並於導電薄膜兩側之電極施 加偏壓，以產生均勻的低壓電場，當顯示面板受到靜電感 應時，例如是手指的靜電感應，此時導電薄膜會產生電容 的電位變化。藉由導電薄膜之定位方式，並根據此電壓變 化或電位變化以得知所觸碰之位置。 另外’美商平達（Planar Systems，Inc.)所發表之光學式 觸碰面板電路設計（Active Matrix LCD with Integrated 5 201017606 TT KH · * 厂1201017606 IX. Description of the invention: [Technical field of the invention] The present invention relates to a touch sensor and a touch display panel thereof, and particularly to (4) a touch of a sensing channel generated by a pressure-based compression Touch the sensor and its touch display panel. [Prior Art] The technology of the touch display panel has been widely used in electronic devices, such as mobile phones, notebook computers, music players (Mp3), personal digital assistants (PDAs), global satellite positioning systems (Gps), Among portable electronic products such as ultra-mini computers (UMPCs), one of the applications of the touch-sensitive display panel can be seen. The technical principle of the traditional touch panel is mainly divided into resistance type and capacitive type. The principle of the resistive sensing method is that the two transparent conductive films separated by the surface of the display panel are, for example, thin film resistors, and when the display panel is externally pressed, the conductive films are caused to contact each other to generate a voltage change. The principle of the capacitive sensing method is to apply a plurality of transparent conductive films on the display panel and apply a bias voltage to the electrodes on both sides of the conductive film to generate a uniform low-voltage electric field. When the display panel is subjected to static electricity, for example, electrostatic induction of a finger. At this time, the conductive film generates a potential change of the capacitance. The position of the touched surface is known by the positioning mode of the conductive film and according to the voltage change or the potential change. In addition, the optical touch panel circuit design published by Planar Systems, Inc. (Active Matrix LCD with Integrated 5 201017606 TT KH · * Factory 1
Optical Touch Screen)之技術文獻中’係藉由設置光感測電 晶體（Photo TFT)於面板之畫素陣列中’使得被驅動之光感 測電晶體於環境光之變化下產生電壓變化，遂以此電壓變 化來得知所觸碰之位置。然而，此光學式觸碰面板對於環 境光之變異性影響極鉅，亦即於低照度之環境光下’此電 路之動作靈敏度會大幅地降低，而無法正確地判斷所觸碰 的位置。 【發明内容】 _ 本發明是有關於一種觸碰感測器及其觸碰式顯示面 板，觸碰感測器係基於面板之電路結構’在面板受觸碰 時，改變一受驅動的電極與一對應之開關元件之主動層之 間隔，從而在主動層上感應出通道’並產生相對應之感應 信號。此外，藉由整合多個觸碰感測器於顯示面板中，以 達成觸碰式顯示面板，例如是單觸碰式或多觸碰式 (multi-touch)觸碰式顯示面板。 q 根據本發明之第一方面，提出一種觸碰感測器，包括 一第一基板、一第二基板、一感應電極及一感應開關兀 件。第二基板係設置與第一基板相對。感應電極位於第一 基板上。感應開關元件位於第二基板上，包括一第一開關 電極、一第二開關電極及一主動層。主動層係設置於第 開關電極及第二開關電極之間’月·與第一開關電極及第一 開關電極相接觸。主動層與感應電極相對且相距一間距 當第-基板或第二基板之受壓，改變了感應電極與主動唐 6 201017606 之間距時’受驅動之感應電極在主動層上感應出與間距改 變相對應的通道，使第一開關電極及第二開關電極導通。 根據本發明之第一方面，提出一種觸碰式顯示面板， 包括一第一基板、一第二基板、一晝素陣列及多個觸碰感 測器。第二基板設置與第一基板相對。畫素陣列設置於第 一基板及第二基板之間。各此些觸碰感測器包括一感應電 極及一感應開關元件。感應電極位於第一基板上。感應開 關元件位於第二基板上。感應開關元件包括第一開關電 極、一第二開關電極、一主動層、一介電層及一遮光層。 主動層係設置於第一開關電極及第二開關電極之間且與 第開關電極及第二開關電極相接觸。主動層與感應電極 相對且，距—間距。主動層、第—開關電極及第二開關電 極係覆盍於介電層上。遮光層位於第二基板與介電層之 並與主動層相對。當第—基板或第二基板之受壓改 二感應電極與主動層之間距時，受驅動之感應電極在主 層上感應出與間距改變相對應的通道，以使第一開關電 = —開關電極導通，並於第—開關電極及第二開關電 ^至乂其中之一受驅動時，在第一開關電極及第二開關電 之間產生—相對應的感應信號。 包括根據本發明之第三方面，提出一種觸碰式顯示模組， 匕 觸碰式顯示面板及一讀取電路。觸碰顯示面板包括 相對設置之一笛 . 第_ < 第一基板及一第二基板、設置於第一基板及 =基板之間之一畫素陣列、及多個觸碰感測器。各此些 觸碰感測器包括—感應電極及—感應開關元件。感應電極 7 201017606In the technical literature of Optical Touch Screen, 'the photo-sensing transistor (Photo TFT) is placed in the pixel array of the panel to cause the driven photo-sensing transistor to generate a voltage change under the change of ambient light, 遂The position of the touch is known by this voltage change. However, this optical touch panel has a great influence on the variability of ambient light, that is, under low ambient light, the sensitivity of the circuit is greatly reduced, and the position of the touch cannot be correctly judged. SUMMARY OF THE INVENTION The present invention relates to a touch sensor and a touch display panel thereof. The touch sensor is based on a circuit structure of a panel. When the panel is touched, a driven electrode is changed. A spacing of the active layers of the corresponding switching elements induces a channel 'on the active layer and produces a corresponding induced signal. In addition, by integrating a plurality of touch sensors in the display panel to achieve a touch display panel, such as a one-touch or multi-touch touch panel. According to a first aspect of the present invention, a touch sensor is provided, comprising a first substrate, a second substrate, an inductive electrode, and an inductive switch device. The second substrate is disposed opposite to the first substrate. The sensing electrode is located on the first substrate. The inductive switching element is located on the second substrate and includes a first switching electrode, a second switching electrode and an active layer. The active layer is disposed between the first switch electrode and the second switch electrode and is in contact with the first switch electrode and the first switch electrode. The active layer is opposite to the sensing electrode and spaced apart from each other. When the first substrate or the second substrate is pressed, the distance between the sensing electrode and the active Tang 6 201017606 is changed, and the driven sensing electrode is induced on the active layer and the pitch is changed. Corresponding channels enable the first switch electrode and the second switch electrode to be turned on. According to a first aspect of the present invention, a touch display panel is provided, comprising a first substrate, a second substrate, a pixel array and a plurality of touch sensors. The second substrate is disposed opposite to the first substrate. The pixel array is disposed between the first substrate and the second substrate. Each of the touch sensors includes an inductive electrode and an inductive switching element. The sensing electrode is located on the first substrate. The inductive switching element is located on the second substrate. The inductive switching element includes a first switching electrode, a second switching electrode, an active layer, a dielectric layer and a light shielding layer. The active layer is disposed between the first switch electrode and the second switch electrode and is in contact with the switch electrode and the second switch electrode. The active layer is opposite to the sensing electrode and is spaced apart. The active layer, the first switch electrode and the second switch electrode are overlying the dielectric layer. The light shielding layer is located between the second substrate and the dielectric layer and opposite to the active layer. When the pressure of the first substrate or the second substrate is changed between the two sensing electrodes and the active layer, the driven sensing electrode induces a channel corresponding to the change of the pitch on the main layer, so that the first switch is electrically switched to the switch. The electrode is turned on, and when the first switch electrode and the second switch device are driven, a corresponding sensing signal is generated between the first switch electrode and the second switch. In accordance with a third aspect of the present invention, a touch display module, a touch display panel and a read circuit are provided. The touch display panel includes a flute that is oppositely disposed. The first substrate and a second substrate, a pixel array disposed between the first substrate and the substrate, and a plurality of touch sensors. Each of the touch sensors includes an inductive electrode and an inductive switching element. Induction electrode 7 201017606
t »» TO*T f I 位於第一基板上。感應開關元件位於第二基板上。感應開 關元件包括第一開關電極、一第二開關電極、一主動層、 一介電層及一遮光層。主動層係設置於第一開關電極及第 二開關電極之間，且與第一開關電極及第二開關電極相接 觸。主動層與感應電極相對且相距一間距。主動層、第一 開關電極及第二開關電極係覆蓋於介電層上。遮光層位於 第二基板與介電層之間，並與主動層相對。當第一基板或 第二基板之受壓，改變了感應電極與主動層之間距時，受 驅動之感應電極在主動層上感應出與間距改變相對應的 通道，以使第一開關電極及第二開關電極導通，並於第一 開關電極及第二開關電極至少其中之一受驅動時，在第一 開關電極及第二開關電極之間產生一相對應的感應信 號。讀取電路用以接收至少此些觸碰感測器之一的感應信 號，感應信號係一電流信號。讀取電路係用以轉換電流信 號為一輸出信號。 根據本發明之第四方面，提出一種觸碰感測器，包括 第一基板、一第二基板、一感應電極及一感應開關元件。 第二基板係設置與第一基板相對。感應電極位於第一基板 上。感應開關元件位於第二基板上，包括一源極、一汲極、 一主動層及一閘極。主動層係設置於源極及汲極之間，且 與源極及汲極相接觸。主動層與感應電極相對且相距一間 距。閘極與主動層相對，且係空接。當第一基板或第二基 板之受壓，改變了感應電極與主動層之間距時，受驅動之 感應電極在主動層上感應出與間距改變相對應的通道，使 201017606 源極及汲極導通。 根據本發明之第五方面，提出一種觸碰式顯示面板， 包括一第一基板、一第二基板、一晝素陣列、及多個觸碰 感測器。第二基板設置與第一基板相對。畫素陣列設置於 第一基板及第二基板之間。各此些觸碰感測器包括一感應 電極及一薄膜電晶體。感應電極位於第一基板上。薄膜電 晶體位於第二基板上。感應薄膜電晶體具有一源極、一汲 極、一主動層及一閘極。主動層係設置於源極與汲極之 ® 間，且與源極及汲極相接觸。主動層與感應電極相對且相 距一間距。閘極與主動層相對，且係空接。當第一基板或 第二基板之受壓，改變了感應電極與主動層之該間距時， 受驅動之感應電極在主動層上感應出與間距改變相對應 的通道，以使源極及汲極導通，並於源極及汲極至少其中 之一受驅動時，在源極及汲極之間產生一相對應的感應信 號。 為讓本發明之上述内容能更明顯易懂，下文特舉較佳 實施例，並配合所附圖式，作詳細說明如下。 【實施方式】 第一實施例 請參照第1A圖，其繪示依照本發明第一實施例之觸 碰感測器之結構圖。觸碰感測器110包括一第一基板120、 9 201017606 一第二基板130、一感應電極i4〇及一感應開關元件15〇。 第二基板130設置與第一基板120相對。感應電極14〇位 於第一基板120上。感應開關元件丨5〇位於第二基板13〇 上。 感應開關元件150包括一第一開關電極151、一第二 開關電極152、及一主動層153。主動層153係設置於第 開關電極151及第二開關電極152之間，且與第一開關 電極151及第二開關電極152相接觸。主動層丨53與感應 電極140相對且相距一間距di。在此實施例之第一開關電 極151及第二開關電極152，係可設置於主動層153之兩 側並覆蓋部分之主動層153 ;在其他實作例子中，此兩開 關電極151及152之設置關係及組成可作其他變化，例如 兩開關電極151及152分別設置於主動層153之兩側並與 之作電性連接，又例如包括金屬層及摻雜層如n+層或增 加其他的摻雜層或改以不同材質，以增進其與主動層153 的導電效果。 «月同時參照第1B圖，其纷示依照本發明第一實施例 之觸碰感測器於受按壓時感應出道通之結構圖。當第一基 板120或第二基板130之一受外力的按壓改變了感應電 極140與主動層153之間距dl，例如是由第1八圖中的間 距di縮減至第1B圖中的間距d2，此時， 極H0在主動層153上感應出與間距di改變相對應的通 道（Channel)，使第一開關電極151及第二開關電極152導 通0 201017606 ..r 茲將上述之觸碰感測器110之電路示意圖說明如 下。明同時參照第2A及2B圖，其分別繪示依照本發明第 一實施例之觸碰感測器之電路示意圖，及依照本發明第一 實施例之觸碰感測器受壓時產生感應信號之電路示意 圖。感應電極140用以接收一第一信號而得以受驅動，第 開關電極151係用以接收來自走線γ之一第二信號而得 以受驅動，第二開關電極丨52係用以接收來自走線χ之一 第二彳§號而得以受驅動。於一些實施例中，第二開關電極 ❼152亦可不接收信號，而是當第一開關電極151及第二開 關電極152導通時，用以輸出其間所產生的一感應信號 Si，並由走線X將感應信號Si傳送出去。 當第一開關電極151及第二開關電極152導通時，會 產生相對應的感應信號Si ’或令感應信號Si產生變化， 例如是電壓值、電流值或是波形上變化。因此，此感應信 號Si的產生與否或其變化’係能反映出此觸碰感測器u〇 是否受壓’也就是觸碰感測器110之感應電極140與主動 參層153之間距是否有改變。此外，觸碰感測器no由受壓 狀態回復到未受壓之狀態所產生的改變，間距之改變係增 加’所反映出來的是感應信號Si之改變，故此種情況也可 得以檢測。 有關本實施例中主動層153感應出通道以及通道使 第一開關電極151及第二開關電極152導通的原理，係可 應用頂閘極(top-gate)之場效應電晶體（field-effect transistor，FET)產生通道的原理來加以解釋。然而，值得 注意的是，觸碰感測器110之感應電極140係與感應開關 元件150分離並相對應的具有一可變的間距，在主動層153 所感應出的通道與此間距的改變有相對應的關係。 此外，感應電極140與感應開關元件150之驅動方 式，亦可以用場效應電晶體的驅動方式來加以解釋。例 如，為了讓主動層153得以產生通道，如η通道(η channel)，則感應電極140的驅動方式，應設計令感應電 極140電位足以在與其相距某一間距之主動層153上感應 出通道。相似地，若設置觸碰感測器110產生p通道 _ (p-channel)時，驅動方面的考量亦復如是。總之，只要能 讓驅動感應電極140與主動層153兩者在某一間距時，能 在主動層153感應出通道，此時，再加上在第一開關電極 151及第二開關電極152之間作適當的驅動，例如是施予 偏壓電壓或偏壓電流，就可以從第一開關電極151或第二 開關電極152得到相對應的感應信號Si 了。 雖然，於觸碰感測器110之感應電極140與感應開關 元件150之作動中，如何令主動層153感應出通道的原理 ❿ 與場效應電晶體之運作方式有所不同，但為了方便說明起 見，在下面的實施例及圖式中，我們將採用與場效應電晶 體相似的一電路元件符號來代表依據本發明的各個實施 例中的觸碰感測器。 於本發明所揭露之一些實施例中，上述之觸碰感測器 110係可應用於一觸碰式顯示面板中。請參照第1C圖，其 繪示依照本發明第一實施例之觸碰感測器110應用於觸碰 12 201017606 式顯示面板時之結構圖。於第1C圖中，第1A圖所示之感 應開關元件150更包括一介電層154及一遮光層155。主 動層153、第一開關電極151及第二開關電極152係覆蓋 於介電層154上。遮光層155位於第二基板130與介電層 154之間，並與主動層相對。由於在一般使用背光源之觸 碰式顯示面板中，背光源之光線係由從第二基板130進 入，故在應用本發明之觸碰感測器110於顯示面板時，係 可藉由遮光層155來遮敝進入至第二基板130且照射至主 修動層153的光線，以避免主動層153受到顯示面板之光源 的影響。 請同時參照第3Α及3Β圖，第3Α圖繪示第1C圖之 觸碰感測器應用於觸碰式液晶顯示面板之示意圖。第3Β 圖繪示依照第3Α圖中剖面線ΑΑ’之觸碰式液晶顯示面板 之剖面圖。液晶顯示面板300包括一第一基板120、一第 二基板130、一晝素陣列及多個觸碰感測器。為簡化說明 故，第3Α及3Β圖係繪示一觸碰感測器110及晝素陣列之 參三個畫素160並以此為例做說明。第二基板130設置與第 一基板120相對。畫素陣列設置於第一基板120及第二基 板130之間。在第3Α及3Β圖中之三個晝素160係可視為 彩色液晶顯示面板之三個子畫素（sub-pixels)。 由於觸碰感測器110係設置於第一面板120及第二面 板130之間，亦即位於晝素陣列之中。因此，觸碰感測器 110可於顯示面板之製造過程中設置完成，故能整合觸碰 感測器之電路與畫素陣列於一觸碰式顯示面板中。在一實 13 201017606 > »» ~r\»-r « » i-» 作之例子中，液晶顯示器的彩色遽光器基板（color filter plate)之上製作電極來實施感應電極14〇，而在薄膜電晶體 基板(thin_film transistor plate)上製作感應開關元件150。 此外，在其他例子中，感應電極14〇可以利用凸塊(bump) 加以實現感應電極140。而且，可考量介電材質的特性以 δ又计感應電極1 40與感應開關元件1 50之間距；而感應電 極140的形狀，以及長、寬或深度亦可就介電材質的特性 與實際布局的電性需求而加以考量。總之，在實作時，如 上述實作例子的考量，要讓驅動感應電極14〇與感應開關 元件150兩者在某一間距時’能在主動層153感應出通道。 茲將應用本發明觸碰感測器應用於觸碰式顯示面板 中之多個實施例及其實施方式說明如下。 第二實施例 於本實施例中’第1C圖之遮光層155例如為具有金 屬材料之一控制電極’此時，第一開關電極151、第二開 關電極152、及此控制電極例如係形成一薄膜電晶體(thin film transistor，TFT)之詰構。茲以藉由薄膜電晶體來達成 感應開關元件150為例做說明。請參照第4圖，其繪示依 照本發明第二實施例之觸碰式液晶顯示面板之電路圖。薄 膜電晶體450具有一源極450s、一汲極45〇d、一閘極45〇g 及一主動層（未繪示於第4圓中），分別對應為感應開關元 件的第一開關電極151、第一開關電極152、控制電極155 及主動層153。薄膜電晶體450例如是非晶妙薄膜電晶體 201017606 (amorphous silicon TFT)、或多晶石夕薄膜電晶體 (poly-silicon TFT)。 本實施例之作動說明如下。如第4圖所示，感應電極 140用以接收一第一信號而得以受驅動，例如是外部之一 電壓信號Vr。源極450s係用以接收一第二信號而得以受 驅動，第二信號係一電壓信號，例如是閘極驅動器（未繪示 於第4圖中）所產生之一掃描信號Gn。閘極450g係用以接 收一第四信號而得以受驅動，例如是外部之另一電壓信號 ❹ Vr2。當源極450s及汲極450d導通時，會產生一相對應的 感應信號Si，没極450d係用以輸出感應信號Si。因此， 藉由此感應信號Si的產生與否或其變化，能得知此觸碰感 測器110是否受壓。 於面板佈局上，由於掃描信號Gn係用以驅動畫素陣 列之一列，例如第η列，故接收掃描信號Gn之此些觸碰 感測器110係可以設置於靠近畫素陣列之此列之處。因 此，本實施例中，由於觸碰感測器110之源極450s係藉由 ❹接受鄰近之掃描信號Gn而得以受驅動，故不需額外的配 線以接收較遠處之信號，而能更加地節省電路配線，亦不 會增加成本。 另外，在薄膜電晶體450例如是非晶矽薄膜電晶體之 情況下，薄膜電晶體450之主動層因對光有光感應現象， 故薄膜電晶體450之閘極係可視為一遮光結構層（black matrix)、且亦可同時為一閘極信號結構層，以減低光感應 現象。 15 201017606 I ▼▼ -TW~T · 1 從本實施例可知，在整合觸碰感測器與晝素陣列於一 觸碰顯示面板之中時，其布局的方式亦與觸碰感測器的驅 動之信號來源有關。因此，觸碰感測器在受到不同驅動來 源之組合之方式時，吾人可相對地以依此驅動來源來作出 不同之電路布局，例如是相關走線的布局設計，以依據本 發明之實施例實施此觸碰顯示面板。 第三實施例 請參照第5圖，其繪示依照本發明第三實施例之觸碰 式液晶顯示面板之電路圖。本實施例與第二實施例不同的 是，控制電極係電性連接至第一開關電極151及第二開關 電極152之其中之一。亦即，閘極450g係電性連接至源 極450s及汲極450d之其中之一。於第5圖中，係以閘極 450g電性連接至源極450s為例做說明。由於源極450s係 接收掃描信號Gn以受驅動，故知，閘極450g亦接收掃描 信號Gn以受驅動。如此，本實施例之薄膜電晶體450係 可視為一二極體（diode)元件。 當電壓信號Vr感應通道而使源極450s及汲極450d 導通時，亦即此二極體元件將會導通，此時會產生對應於 此掃描信號Gn之一感應信號Si。如此，本實施例亦能藉 由此感應信號Si的產生與否或其變化，來得知此觸碰感測 器110是否受壓。 第四實施例 201017606 請參照第6圖’其繪示依照本發明第四實施例之觸碰 式液晶顯示面板之電路圖。故知’閘極45〇g係不接收信 號，故不被驅動。 由於在第二及第三實施例中’閘極45〇g係接收第四 信號而得以受驅動，例如是接收第二實施例中的另一電壓 信號Vr2、或接收第三實施例中的掃描信號Gll。然而於實 作中’申請人發現，當閘極450g(亦即第ic圖之遮光層 155，其係為具有金屬材質之控制電極）接收電壓信號而受 ❹驅動時’將會產生電場，而此電場可能會影響感應電極140 於主動層153上感應通道的能力。 再者，申請人還發現，因為同樣位在第二基板130上 的主動層153與閘極450g之間的距離相對較近（約 1000〜2000埃（Angstrom)) ’而位在第二基板130上的主動 層153與位在第一基板120上的感應電極140之間的距離 相對較遠（約1〜2微米（ym))。如此，若在同樣驅動信號的 條件下，閘極450g在主動層153上產生電場的大小，將 ®會大於感應電極140在主動層153上產生電場的大小。所 以，當主動層153受感應而產生通道時，受驅動之閘極45〇g 可能會對感應電極140感應通道的能力產生影響’而導致 感應電極140對於感應通道的靈敏度降低。所以’於本實 施例中，吾人係將閘極450g空接使其不受驅動，以於感 應電極140在感應通道時，降低閘極450g <能產生之影 如此，當源極450s及沒極450d導通時’會產生感 201017606 麗 ττ -τνι-r ι · 應信號Si。而且，由於空接之閘極450g可能會使感應電 極140提高對於此感應信號Si的靈敏度。因此，本實施例 能藉由此感應信號Si的產生與否或其變化，來得知此觸碰 感測器110是否受壓，而且於感測是否受壓的過程中，還 能具有較佳的感測靈敏度。 第五實施例 請參照第7圖，其繪示依照本發明第五實施例之觸碰 式液晶顯示面板之電路圖。本實施例之顯示面板之電路係 ⑩ 相仿於第四實施例之顯示面板之電路，其不同之處在於觸 碰感測器110係受不同驅動信號所驅動。 於本實施例中，感應電極140例如係接收一共同電壓 Vcom以受驅動。此共同電壓Vcom係用以驅動晝素陣列。 源極450s係用以接收由閘極驅動器所產生之掃描信號Gn 而得以受驅動，而閘極450g係為空接。汲極450d則係用 以輸出感應信號Si。因此，藉由此感應信號Si的產生與 否或其變化，能得知此觸碰感測器110是否受壓。 ❹ 第六實施例 於本實施例中，第1C圖之觸碰感測器110之遮光層 155例如為具有絕緣材料之一遮光結構層（black matrix)， 亦可稱為黑色矩陣。請參照第8圖，其繪示依照本發明第 六實施例之觸碰式液晶顯示面板之電路圖。由於本實施例 係以絕緣材料之遮光結構層作為遮光層，而有異於第二實 18 施例中所使用之金屬材料之控制電極，因此，本實施例係 以相仿於場效電晶體、但不具有閘極端之電路元件符號來 表示本實施例之觸碰感測器，如第7圖繪示之觸碰感測器 110。 於本實施例中，感應電極140係用以接收外部之電壓 信號Vr以受驅動，觸碰感測器110之第一開關電極151 係用以接收掃描信號Gn以受驅動，當第一開關電極151 與第二開關電極152導通時，會產生相對應的一感應信號 ⑩ Si，第二開關電極152係用以輸出此感應信號Si。因此， 藉由此感應信號Si的產生與否或其變化，能得知此觸碰感 測器110是否受壓。 本實施例之觸碰感測器110亦不會影響感應電極140 於主動層153上感應通道的靈敏度。於上述之第四及第五 實施例中，係使得具有金屬材料之遮光層155為空接，而 本實施例係以具有絕緣材料之遮光結構層來作為遮光層 155，故絕緣之遮光層155亦不會產生電場，故不會影響 ❹感應電極140於主動層153上感應通道的靈敏度。如此， 本實施例能得知此觸碰感測器110是否受壓，且於感測是 否受壓的過程中，還能具有較佳的感測靈敏度。 第七實施例 請參照第9圖，其繪示依照本發明第七實施例之觸碰 式液晶顯示面板之電路圖。本實施例之顯示面板之電路係 相仿於第六實施例之顯示面板之電路，其不同之處在於觸 201017606 碰感測器110係受不同驅動信號所驅動。 於本實施例中，感應電極丨40例如接收一電壓信號 Vr以受驅動，且第一開關電極151亦接收此電壓信號％ 以受驅動，而第二開關電極152係用以輸出感應信號Si。 因此，藉由此感應尨號Si的產生與否或其變化，能得知此 觸碰感測器110是否受壓。 第八實施例 請參照第10圖，其繪示依照本發明第八實施例之觸 _ 碰式液晶顯示面板之電路圖。本實施例之顯示面板之電路 係相仿於第六實施例之顯示面板之電路，其不同之處在於 觸碰感測器110係受不同驅動信號所驅動。 於本實施例中，感應電極140例如接收共同電壓 Vcom以受驅動，且第一開關電極151係接收掃描信號 以受驅動，而第一開關電極152係用以輸出感應信號Si。 因此，藉由此感應信號Si的產生與否或其變化，能得知此 觸碰感測器110是否受壓。 办 於本發明上述所揭露之實施例中，觸碰感測器110亦 可應用於一觸碰式顯示模組中。請參照第11A圖，其繪示 為應用於本發明之實施例之觸碰式顯示模組之一例之示 意圖。觸碰式顯示模組500係用以依據感應信號Si的產生 與否或其變化，來得知觸碰感測器是否受壓。在一些例子 中，觸碰式顯示模組500能依據至少一感應信號，來判斷 20 201017606 受觸碰之位置。 於第11A圖中，觸碰式顯示模組500包括一觸碰式顯 示面板 520、一讀取電路（Readout integrated circuit, Readout-IC)540、一定位電路560、及一閘極驅動器580。 觸碰式顯示面板520例如為第二至第八實施例之其一所述 之應用本發明之觸碰感測器110之觸碰式顯示面板。 再者，如第11A圖所示，觸碰式顯示面板520係用以 接收閘極驅動器580之掃描信號Gn以受驅動。然亦不限 蠹於此。請參照第11B圖，其繪示為應用於本發明之實施例 之觸碰式顯示模組之另一例之示意圖。於第11B圖中，觸 碰式顯示模組500還可包括一觸碰控制電路590，其例如 係用以提供上述之電壓信號Vr或Vr2,以驅動觸碰式顯示 面板520。如此，於本發明之實施例中，觸碰式顯示面板 520之驅動信號可包括掃描信號Gn、電壓信號Vr及Vr2 之至少其中之一。亦即，觸碰式顯示面板520可由驅動畫 素陣列之閘極驅動器580來驅動，如第11A圖所示；或者， _觸碰式顯示面板520亦可由閘極驅動器580與一外部電路 (如上述之觸碰控制電路590)來驅動，如第11B圖所示。 茲以第11A圖之觸碰式顯示模組500為例說明如下。 於第11A圖中，讀取電路520用以接收至少此些觸碰感測 器之一的感應信號Si，感應信號Si係一電流信號。讀取 電路520係用以轉換電流信號為一輸出信號So。請參照第 12至第16圖，其係分別繪示本發明之實施例之觸碰式顯 示模組之讀取電路520之電路圖之一例。於第12圖中， 21 讀取電路540包括一電流轉電壓放大器442，其係例如包 括一運算放大器OP1，用以轉換電流信號之感應信號Si 為一第一電壓信號VI。讀取電路540係以第一電壓信號 VI作為輸出信號So。 於第13圖中，讀取電路540包括第12圖所示之電流 轉電壓放大器442及一比較放大器444。比較放大器例如 包括一運算放大器0P2，用以比較第一電壓信號VI與一 參考電壓Vref，以輸出一第二電壓信號V2。讀取電路540 係以第二電壓信號V2作為輸出信號So。 ⑩ 於第14圖中，讀取電路540包括第12圖所示之電流 轉電壓放大器442、一反相放大器446、及一比較放大器 444。反相放大器446例如包括一運算放大器OP3，反相 放大器446用以反相放大第一電壓信號VI為一第二電壓 信號V2’。比較放大器444用以比較第二電壓信號V2’與 一參考電壓Vref2，以輸出一第三電壓信號V3。讀取電路 540係以第三電壓信號V3作為輸出信號So。 於第15圖中，讀取電路540包括第12圖所示之電流 ❿ 轉電壓放大器442、及一類比數位轉換器（analog to digital converter, ADC)448。類比數位轉換器448用以轉換類比之 第一電壓信號VI為一數位電壓信號Vd。讀取電路540係 以數位電壓信號Vd作為輸出信號So。 於第16圖中，讀取電路540包括第12圖所示之電流 轉電壓放大器442、一反相放大器446及一類比數位轉換 器448。類比數位轉換器448用以轉換類比之第二電壓信 22 .號V2’為一數位電壓信號Vd2。讀取電路540係以數位電 壓信號Vd2作為輸出信號So。 於第12至16圖所繪示之例中，係可利用實作觸碰感 測器之電路之特性，令讀取電路540讀取感應信號Si，並 依據感應信號Si，例如是相對應的電流變化，以應用於實 施各種與感測觸碰感測器110是否受壓或受壓位置的相關 分析之中。而於此些例子中，讀取電路520所接收之感應 信號S i係為電流形式之信號。亦即，觸碰感測器所感測之 參感應信號Si係為電流信號，如此，相較於電廢信號，此電 流信號在從觸碰式顯示面板520中可能較不易受到面板佈 局上之各元件的電壓耦合效應所影響，故感應信號Si能穩 定地被傳送至面板外部之讀取電路520。 請繼續參照第11A圖，於一實施例中，一行之此些觸 碰感測器係耦接至讀取電路540，用以共同輸出上述之感 應信號Si。如此，當讀取電路540依據感應信號Si提供 輸出信號So時，定位電路560可依據讀取電路540所輸 ❿出之輸出信號So,來定位觸碰式顯示面板520受觸碰之位 置。 於另一實作例中，閘極驅動器580用以產生一掃描信 號Gn，以驅動畫素陣列之一列，觸碰式顯示面板520係 於閘極驅動器580之驅動下顯示畫面。此些觸碰感測器之 一列係用以接收掃描信號Gn以受驅動，而接收掃描信號 Gn之此列之此些觸碰感測器係設置於靠近畫素陣列之此 列之處。如此，定位電路560還可依據此掃描信號Gn來 23 201017606 1 w*to*tirrv 判斷產生感應.信號Si之此觸碰感測器是否為此列此些觸 碰感測器，並依據感應信號Si來判斷出受觸碰之此觸碰感 測器之位置，以定位為觸碰式顯示面板520受觸碰之位 置。亦即，讀取電路540在接收來自一行之此些觸碰感測 器之此感應信號Si而輸出信號So時，定位電路560可依 據至少此掃描信號Gn及此輸出信號So，來定位觸碰式顯 示面板520受觸碰之位置。 舉例來說，本發明實施例之觸碰式顯示模組500在應 用上述之第二至第六及第八實施例之觸碰式顯示面板 ® 時，可依據此掃描信號Gn及輸出信號So，來定位出受觸 碰之位置。由於受觸碰之此觸碰感測器係由驅動一列（表示 為橫向之一列）畫素之掃描信號Gn所驅動，故此觸碰感測 器係設置於靠近此列畫素之處。因此，定位電路560能夠 從掃描信號Gn判斷出觸碰感測器於觸碰式顯示面板520 上的縱向座標Dy。 再者，假設受觸碰之觸碰感測器係為一列觸碰感測器 中之第Y個觸碰感測器，以使包含第Y個觸碰感測器之一 ❹ 行（表示為直向之一行）之多個觸碰感測器共同輸出感應信 號Si。如此，當讀取電路540接收到此感應信號Si，而使 定位電路560偵測到輸出信號So時，則定位電路560便 能判斷出受觸碰之此觸碰感測器於觸碰式顯示面板520上 的橫向座標Dx。如此，定位電路560便能根據橫向座標 與縱向座標（Dx，Dy)，來定位出受觸碰之此觸碰感測器的 位置，而能得知觸碰式顯示面板520受觸碰之位置。 24 201017606 _ > 1 - 於上述之觸碰感測器接收掃描信號Gn以受驅動之例 中，觸碰式顯示模組500還可包括一控制器（controller)(未 繪示）。此控制器用以控制閘極驅動器580，以使閘極驅動 器580能依序地輸出掃描信號。亦即，控制器將可控制掃 描信號Gn之時序’而定位電路560便可參照控制器所控 制之時序，以對受驅動之此些觸碰感測器進行定位的動 作。於實作中，定位電路560係可實現於此控制器之内部 電路中。舉例來說，此控制器可由現場可程式化邏輯閘陣 列（Field Programmable Gate Array, FPGA)來實作，而定位 電路560便能實現於FPGA之邏輯閘陣列中。然亦不限於 此，定位電路560亦可實現於上述之控制器之外部電路 中。只要能藉由此感應信號Si ’來達到定位出受觸碰位置 之定位電路，皆在本發明之保護範圍内。 雖然上述的觸碰感測器與畫素陣列整合的數個實施 例中，係以一畫素與一觸碰感測器為例。然而，在其他實 春施例中，觸碰感測器與畫素可具有不同之組合排列方式， 如以一定或不同的分佈比例，設置於畫素陣列中；又如， 部分的觸碰感測器可設置或延伸至畫素陣列之顯示區以 外，以作其他應用。舉例來說，藉由配置多個觸碰感測器 於畫素陣列之間，並偵測此些觸碰感測器受觸碰所感應之 多個感應信號’由此，同一時間不同手指或物體在面板上 的觸碰位置皆可得以定位，故可達成多觸碰式顯示面板。 此外，藉由偵測感應信號及實際應用的需要，亦可將之設 25 201017606t »» TO*T f I is located on the first substrate. The inductive switching element is located on the second substrate. The inductive switching element includes a first switching electrode, a second switching electrode, an active layer, a dielectric layer and a light shielding layer. The active layer is disposed between the first switch electrode and the second switch electrode and is in contact with the first switch electrode and the second switch electrode. The active layer is opposite to the sensing electrodes and spaced apart from each other. The active layer, the first switch electrode and the second switch electrode are overlying the dielectric layer. The light shielding layer is located between the second substrate and the dielectric layer and opposite to the active layer. When the first substrate or the second substrate is pressed to change the distance between the sensing electrode and the active layer, the driven sensing electrode induces a channel corresponding to the pitch change on the active layer, so that the first switching electrode and the first The two switch electrodes are turned on, and when at least one of the first switch electrode and the second switch electrode is driven, a corresponding sensing signal is generated between the first switch electrode and the second switch electrode. The reading circuit is configured to receive an induction signal of at least one of the touch sensors, and the sensing signal is a current signal. The read circuit is used to convert the current signal into an output signal. According to a fourth aspect of the present invention, a touch sensor is provided, comprising a first substrate, a second substrate, an inductive electrode and an inductive switching element. The second substrate is disposed opposite to the first substrate. The sensing electrode is located on the first substrate. The inductive switching element is located on the second substrate and includes a source, a drain, an active layer and a gate. The active layer is disposed between the source and the drain and is in contact with the source and the drain. The active layer is opposite to the sensing electrode and spaced apart by a distance. The gate is opposite to the active layer and is vacant. When the first substrate or the second substrate is pressed to change the distance between the sensing electrode and the active layer, the driven sensing electrode induces a channel corresponding to the pitch change on the active layer, so that the source and the drain of the 201017606 are turned on. . According to a fifth aspect of the present invention, a touch display panel is provided, comprising a first substrate, a second substrate, a pixel array, and a plurality of touch sensors. The second substrate is disposed opposite to the first substrate. The pixel array is disposed between the first substrate and the second substrate. Each of the touch sensors includes an inductive electrode and a thin film transistor. The sensing electrode is located on the first substrate. The thin film transistor is on the second substrate. The inductive thin film transistor has a source, a drain, an active layer and a gate. The active layer is placed between the source and the drain and is in contact with the source and drain. The active layer is opposite to the sensing electrodes and spaced apart from each other. The gate is opposite to the active layer and is vacant. When the first substrate or the second substrate is pressed to change the distance between the sensing electrode and the active layer, the driven sensing electrode induces a channel corresponding to the pitch change on the active layer to make the source and the drain Turning on, and generating a corresponding sensing signal between the source and the drain when at least one of the source and the drain is driven. In order to make the above description of the present invention more comprehensible, the preferred embodiments are described below, and are described in detail below with reference to the accompanying drawings. [Embodiment] First Embodiment Referring to Fig. 1A, there is shown a structural view of a touch sensor according to a first embodiment of the present invention. The touch sensor 110 includes a first substrate 120, a 9201017606, a second substrate 130, an inductive electrode i4, and an inductive switching element 15A. The second substrate 130 is disposed opposite to the first substrate 120. The sensing electrode 14 is clamped on the first substrate 120. The inductive switching element 丨5〇 is located on the second substrate 13A. The inductive switching element 150 includes a first switching electrode 151, a second switching electrode 152, and an active layer 153. The active layer 153 is disposed between the first switch electrode 151 and the second switch electrode 152 and is in contact with the first switch electrode 151 and the second switch electrode 152. The active layer 丨 53 is opposite to the sensing electrode 140 and spaced apart by a distance di. The first switch electrode 151 and the second switch electrode 152 in this embodiment may be disposed on both sides of the active layer 153 and cover a portion of the active layer 153; in other implementations, the two switch electrodes 151 and 152 The setting relationship and the composition may be changed. For example, the two switch electrodes 151 and 152 are respectively disposed on and electrically connected to the active layer 153, and further include, for example, a metal layer and a doped layer such as an n+ layer or other addition. The impurity layer is changed to a different material to enhance the electrical conductivity of the active layer 153. «Monthly, referring to Fig. 1B, there is shown a structural diagram in which the touch sensor according to the first embodiment of the present invention induces a pass when pressed. When the pressing of one of the first substrate 120 or the second substrate 130 by the external force changes the distance dl between the sensing electrode 140 and the active layer 153, for example, the pitch di in the first FIG. 8 is reduced to the spacing d2 in the first FIG. At this time, the pole H0 induces a channel corresponding to the change of the pitch di on the active layer 153, so that the first switch electrode 151 and the second switch electrode 152 are turned on. 0 201017606 ..r A schematic diagram of the circuit of the device 110 is as follows. Referring to FIGS. 2A and 2B, respectively, a circuit diagram of a touch sensor according to a first embodiment of the present invention is shown, and an inductive signal is generated when the touch sensor is pressed according to the first embodiment of the present invention. Schematic diagram of the circuit. The sensing electrode 140 is configured to receive a first signal to be driven, the first switching electrode 151 is configured to receive a second signal from the trace γ to be driven, and the second switching electrode 52 is configured to receive the trace from the trace One of the second 彳 § is driven. In some embodiments, the second switch electrode 152 can also receive no signal, but when the first switch electrode 151 and the second switch electrode 152 are turned on, the output signal Si generated between the first switch electrode 151 and the second switch electrode 152 is outputted by the trace X. The sensing signal Si is transmitted out. When the first switch electrode 151 and the second switch electrode 152 are turned on, a corresponding sense signal Si ′ is generated or the sense signal Si is changed, for example, a voltage value, a current value, or a waveform change. Therefore, whether the sensing signal Si is generated or not changed can reflect whether the touch sensor u is pressed or not, that is, whether the distance between the sensing electrode 140 of the touch sensor 110 and the active reference layer 153 is There are changes. Further, the touch sensor no changes from the state of being pressed to the state of being uncompressed, and the change in the pitch is caused by the change of the sensing signal Si, so that this can also be detected. In the embodiment, the active layer 153 induces a channel and the channel turns on the first switch electrode 151 and the second switch electrode 152. A top-gate field-effect transistor (field-effect transistor) can be applied. , FET) explains the principle of generating channels. However, it is worth noting that the sensing electrode 140 of the touch sensor 110 is separated from the inductive switching element 150 and has a variable pitch. The channel induced by the active layer 153 has a change in the pitch. Corresponding relationship. In addition, the driving manner of the sensing electrode 140 and the inductive switching element 150 can also be explained by the driving method of the field effect transistor. For example, in order for the active layer 153 to generate a channel, such as an η channel, the sensing electrode 140 is driven in such a way that the potential of the sensing electrode 140 is sufficient to induce a channel on the active layer 153 at a distance therefrom. Similarly, if the touch sensor 110 is set to generate p-channel _ (p-channel), the driving considerations are also the same. In short, as long as the driving sensing electrode 140 and the active layer 153 can be spaced apart at a certain interval, the channel can be induced in the active layer 153. In this case, the first switching electrode 151 and the second switching electrode 152 are added. The appropriate sensing signal Si can be obtained from the first switching electrode 151 or the second switching electrode 152 by appropriate driving, for example, by applying a bias voltage or a bias current. Although, in the operation of the sensing electrode 140 and the inductive switching element 150 of the touch sensor 110, the principle of how the active layer 153 senses the channel is different from that of the field effect transistor, but for convenience of explanation In the following embodiments and figures, we will use a circuit component symbol similar to a field effect transistor to represent the touch sensor in various embodiments in accordance with the present invention. In some embodiments of the present disclosure, the touch sensor 110 described above can be applied to a touch display panel. Please refer to FIG. 1C, which is a structural diagram of the touch sensor 110 applied to the touch panel 12 201017606 type display panel according to the first embodiment of the present invention. In Fig. 1C, the inductive switching element 150 shown in Fig. 1A further includes a dielectric layer 154 and a light shielding layer 155. The active layer 153, the first switch electrode 151 and the second switch electrode 152 are overlying the dielectric layer 154. The light shielding layer 155 is located between the second substrate 130 and the dielectric layer 154 and opposite to the active layer. Since the light of the backlight enters from the second substrate 130 in the touch display panel generally using the backlight, when the touch sensor 110 of the present invention is applied to the display panel, the light shielding layer can be used. 155 is used to conceal the light entering the second substrate 130 and illuminating the main repair layer 153 to prevent the active layer 153 from being affected by the light source of the display panel. Please refer to the 3rd and 3rd drawings at the same time. The third drawing shows the schematic diagram of the touch sensor applied to the touch type liquid crystal display panel in Fig. 1C. Fig. 3 is a cross-sectional view showing the touch type liquid crystal display panel according to the section line ΑΑ' in Fig. 3. The liquid crystal display panel 300 includes a first substrate 120, a second substrate 130, a pixel array, and a plurality of touch sensors. In order to simplify the description, the third and third figures show a touch sensor 110 and a pixel array of three pixels 160 as an example. The second substrate 130 is disposed opposite to the first substrate 120. The pixel array is disposed between the first substrate 120 and the second substrate 130. The three halogen 160 series in the third and third figures can be regarded as three sub-pixels of the color liquid crystal display panel. Since the touch sensor 110 is disposed between the first panel 120 and the second panel 130, that is, in the pixel array. Therefore, the touch sensor 110 can be set in the manufacturing process of the display panel, so that the circuit and the pixel array of the touch sensor can be integrated into a touch display panel. In an example of a real 13 201017606 > »» ~r\»-r « » i-», an electrode is formed on the color filter plate of the liquid crystal display to implement the sensing electrode 14〇, and The inductive switching element 150 is fabricated on a thin-film transistor plate. Further, in other examples, the sensing electrode 14A can implement the sensing electrode 140 using a bump. Moreover, the characteristics of the dielectric material can be considered to be the distance between the sensing electrode 140 and the inductive switching element 150; and the shape, length, width or depth of the sensing electrode 140 can also be related to the characteristics and actual layout of the dielectric material. Consider the electrical needs. In summary, in practice, as considered in the above-described implementation example, the drive sensing electrode 14A and the inductive switching element 150 can induce a channel in the active layer 153 at a certain pitch. A number of embodiments and their embodiments in which the touch sensor of the present invention is applied to a touch display panel are described below. In the present embodiment, the light shielding layer 155 of FIG. 1C is, for example, a control electrode having a metal material. At this time, the first switching electrode 151, the second switching electrode 152, and the control electrode are formed, for example. The structure of a thin film transistor (TFT). The example in which the inductive switching element 150 is achieved by a thin film transistor will be described. Referring to Figure 4, there is shown a circuit diagram of a touch-type liquid crystal display panel in accordance with a second embodiment of the present invention. The thin film transistor 450 has a source 450s, a drain 45〇d, a gate 45〇g, and an active layer (not shown in the fourth circle), respectively corresponding to the first switch electrode 151 of the inductive switching element. The first switch electrode 152, the control electrode 155, and the active layer 153. The thin film transistor 450 is, for example, an amorphous silicon TFT 201017606 or a poly-silicon TFT. The operation of this embodiment will be described below. As shown in Fig. 4, the sensing electrode 140 is driven to receive a first signal, such as an external voltage signal Vr. The source 450s is driven to receive a second signal, and the second signal is a voltage signal, such as a scan signal Gn generated by a gate driver (not shown in FIG. 4). The gate 450g is driven to receive a fourth signal, such as an external voltage signal ❹ Vr2. When the source 450s and the drain 450d are turned on, a corresponding sensing signal Si is generated, and the electrodeless 450d is used to output the sensing signal Si. Therefore, whether or not the touch sensor 110 is pressed can be known by the presence or absence of the induced signal Si or its change. In the panel layout, since the scan signal Gn is used to drive one column of the pixel array, for example, the nth column, the touch sensors 110 that receive the scan signal Gn can be disposed in the column near the pixel array. At the office. Therefore, in this embodiment, since the source 450s of the touch sensor 110 is driven by receiving the adjacent scan signal Gn, no additional wiring is needed to receive signals at a remote location, and Save circuit wiring and increase costs. In addition, in the case where the thin film transistor 450 is, for example, an amorphous germanium thin film transistor, the active layer of the thin film transistor 450 is photoinduced by light, so that the gate of the thin film transistor 450 can be regarded as a light shielding structure layer (black). Matrix), and can also be a gate signal structure layer at the same time to reduce the phenomenon of light induction. 15 201017606 I ▼▼ -TW~T · 1 From the embodiment, when the touch sensor and the pixel array are integrated in a touch display panel, the layout is also the same as that of the touch sensor. The source of the signal is driven. Therefore, when the touch sensor is in a combination of different driving sources, the user can relatively make a different circuit layout according to the driving source, for example, the layout design of the relevant wiring, in accordance with an embodiment of the present invention. Implement this touch display panel. THIRD EMBODIMENT Referring to Figure 5, there is shown a circuit diagram of a touch-type liquid crystal display panel in accordance with a third embodiment of the present invention. The present embodiment is different from the second embodiment in that the control electrode is electrically connected to one of the first switch electrode 151 and the second switch electrode 152. That is, the gate 450g is electrically connected to one of the source 450s and the drain 450d. In Fig. 5, the description is made by taking a gate 450g electrically connected to the source 450s as an example. Since the source 450s receives the scan signal Gn to be driven, it is known that the gate 450g also receives the scan signal Gn to be driven. Thus, the thin film transistor 450 of the present embodiment can be regarded as a diode element. When the voltage signal Vr senses the channel and turns on the source 450s and the drain 450d, that is, the diode element will be turned on, and an induced signal Si corresponding to the scan signal Gn is generated. Thus, the present embodiment can also know whether the touch sensor 110 is pressurized by the presence or absence of the sensing signal Si or its change. Fourth Embodiment 201017606 Please refer to Fig. 6 for a circuit diagram of a touch type liquid crystal display panel in accordance with a fourth embodiment of the present invention. It is known that the 'gate 45〇g system does not receive signals and is therefore not driven. Since the gate 45〇g is driven to receive the fourth signal in the second and third embodiments, for example, receiving another voltage signal Vr2 in the second embodiment or receiving the scan in the third embodiment Signal Gll. However, in the implementation, the applicant found that when the gate 450g (that is, the light-shielding layer 155 of the ic diagram, which is a metal-made control electrode) receives the voltage signal and is driven by the ', an electric field will be generated, and This electric field may affect the ability of the sensing electrode 140 to sense the channel on the active layer 153. Moreover, the Applicant has also found that because the distance between the active layer 153 and the gate 450g which are also on the second substrate 130 is relatively close (about 1000 to 2000 angstroms), and is located on the second substrate 130. The distance between the active layer 153 and the sensing electrode 140 on the first substrate 120 is relatively far (about 1 to 2 micrometers (ym)). Thus, if the gate 450g generates an electric field on the active layer 153 under the same driving signal condition, the ® will be larger than the magnitude of the electric field generated by the sensing electrode 140 on the active layer 153. Therefore, when the active layer 153 is induced to generate a channel, the driven gate 45〇g may affect the ability of the sensing electrode 140 to sense the channel', resulting in a decrease in the sensitivity of the sensing electrode 140 to the sensing channel. Therefore, in this embodiment, we have vacantly connected the gate 450g to be undriven, so that when the sensing electrode 140 is in the sensing channel, the gate 450g is lowered; the shadow can be generated, when the source is 450s and When the pole 450d is turned on, it will produce a feeling 201017606 τττ -τνι-r ι · should signal Si. Moreover, since the gate of the vacant gate 450g may cause the sensing electrode 140 to increase the sensitivity to the sensing signal Si. Therefore, the present embodiment can know whether the touch sensor 110 is pressed by the presence or absence of the sensing signal Si or the change thereof, and can also have a better process in sensing whether the voltage is under pressure. Sensing sensitivity. Fifth Embodiment Referring to Figure 7, there is shown a circuit diagram of a touch-type liquid crystal display panel in accordance with a fifth embodiment of the present invention. The circuit board 10 of the display panel of this embodiment is similar to the circuit of the display panel of the fourth embodiment, except that the touch sensor 110 is driven by different driving signals. In the present embodiment, the sensing electrode 140 receives, for example, a common voltage Vcom to be driven. This common voltage Vcom is used to drive the pixel array. The source 450s is driven to receive the scan signal Gn generated by the gate driver, and the gate 450g is vacant. The bungee 450d is used to output the sensing signal Si. Therefore, whether or not the touch sensor 110 is pressed can be known by the presence or absence of the induced signal Si or its change.第六 Sixth Embodiment In the present embodiment, the light shielding layer 155 of the touch sensor 110 of FIG. 1C is, for example, a black matrix having an insulating material, which may also be referred to as a black matrix. Referring to Figure 8, there is shown a circuit diagram of a touch-type liquid crystal display panel in accordance with a sixth embodiment of the present invention. Since the light shielding structure layer of the insulating material is used as the light shielding layer and is different from the control electrode of the metal material used in the second embodiment, the present embodiment is similar to the field effect transistor. However, the circuit component symbol without the gate terminal is used to indicate the touch sensor of the embodiment, such as the touch sensor 110 shown in FIG. In this embodiment, the sensing electrode 140 is configured to receive an external voltage signal Vr to be driven, and the first switching electrode 151 of the touch sensor 110 is configured to receive the scan signal Gn to be driven, when the first switch electrode When the second switch electrode 152 is turned on, a corresponding sensing signal 10 Si is generated, and the second switch electrode 152 is used to output the sensing signal Si. Therefore, whether or not the touch sensor 110 is pressed can be known by the presence or absence of the induced signal Si or its change. The touch sensor 110 of this embodiment also does not affect the sensitivity of the sensing electrode 140 to sense the channel on the active layer 153. In the fourth and fifth embodiments described above, the light shielding layer 155 having a metal material is made vacant, and in this embodiment, the light shielding structure layer having an insulating material is used as the light shielding layer 155, so that the insulating light shielding layer 155 is provided. The electric field is also not generated, so the sensitivity of the sensing electrode 140 on the active layer 153 is not affected. In this way, the embodiment can know whether the touch sensor 110 is under pressure, and can have better sensing sensitivity during sensing whether it is under pressure. Seventh Embodiment Referring to Figure 9, there is shown a circuit diagram of a touch-type liquid crystal display panel in accordance with a seventh embodiment of the present invention. The circuit of the display panel of this embodiment is similar to the circuit of the display panel of the sixth embodiment, except that the touch sensor 110 is driven by different driving signals. In the present embodiment, the sensing electrode 40 receives, for example, a voltage signal Vr to be driven, and the first switching electrode 151 also receives the voltage signal % to be driven, and the second switching electrode 152 is used to output the sensing signal Si. Therefore, whether or not the touch sensor 110 is pressed can be known by the presence or absence of the induction symmetry Si or its variation. Eighth Embodiment Referring to Figure 10, there is shown a circuit diagram of a touch-sensitive liquid crystal display panel in accordance with an eighth embodiment of the present invention. The circuit of the display panel of this embodiment is similar to the circuit of the display panel of the sixth embodiment, except that the touch sensor 110 is driven by different driving signals. In the present embodiment, the sensing electrode 140 receives, for example, a common voltage Vcom to be driven, and the first switching electrode 151 receives the scanning signal to be driven, and the first switching electrode 152 is configured to output the sensing signal Si. Therefore, whether or not the touch sensor 110 is pressed can be known by the presence or absence of the induced signal Si or its change. In the embodiment disclosed above, the touch sensor 110 can also be applied to a touch display module. Referring to Fig. 11A, there is shown an illustration of an example of a touch display module applied to an embodiment of the present invention. The touch display module 500 is configured to know whether the touch sensor is pressurized according to whether the sensing signal Si is generated or not. In some examples, the touch display module 500 can determine the position of the 20 201017606 touched according to the at least one sensing signal. In FIG. 11A, the touch display module 500 includes a touch display panel 520, a readout integrated circuit (Readout-IC) 540, a positioning circuit 560, and a gate driver 580. The touch type display panel 520 is, for example, a touch type display panel to which the touch sensor 110 of the present invention is applied as described in one of the second to eighth embodiments. Further, as shown in Fig. 11A, the touch panel 520 is for receiving the scan signal Gn of the gate driver 580 to be driven. It is not limited to this. Please refer to FIG. 11B, which is a schematic diagram showing another example of a touch display module applied to an embodiment of the present invention. In FIG. 11B, the touch display module 500 can further include a touch control circuit 590 for providing the voltage signal Vr or Vr2 as described above to drive the touch display panel 520. As such, in the embodiment of the present invention, the driving signal of the touch display panel 520 may include at least one of the scan signal Gn, the voltage signals Vr, and Vr2. That is, the touch display panel 520 can be driven by the gate driver 580 that drives the pixel array, as shown in FIG. 11A; or, the touch panel 520 can also be driven by the gate driver 580 and an external circuit (eg, The above touch control circuit 590) is driven as shown in FIG. 11B. The touch display module 500 of FIG. 11A is taken as an example for explanation. In FIG. 11A, the reading circuit 520 is configured to receive the sensing signal Si of at least one of the touch sensors, and the sensing signal Si is a current signal. The read circuit 520 is for converting the current signal into an output signal So. Referring to Figures 12 to 16, an example of a circuit diagram of the read circuit 520 of the touch display module of the embodiment of the present invention is shown. In Fig. 12, the read circuit 540 includes a current-to-voltage amplifier 442, which includes, for example, an operational amplifier OP1 for converting the induced signal Si of the current signal into a first voltage signal VI. The read circuit 540 uses the first voltage signal VI as the output signal So. In Fig. 13, the read circuit 540 includes a current-to-voltage amplifier 442 shown in Fig. 12 and a comparison amplifier 444. The comparison amplifier includes, for example, an operational amplifier OP2 for comparing the first voltage signal VI with a reference voltage Vref to output a second voltage signal V2. The read circuit 540 uses the second voltage signal V2 as the output signal So. In Fig. 14, the read circuit 540 includes a current to voltage amplifier 442, an inverting amplifier 446, and a comparison amplifier 444 shown in Fig. 12. The inverting amplifier 446 includes, for example, an operational amplifier OP3 for inverting and amplifying the first voltage signal VI to a second voltage signal V2'. The comparison amplifier 444 is configured to compare the second voltage signal V2' with a reference voltage Vref2 to output a third voltage signal V3. The read circuit 540 uses the third voltage signal V3 as the output signal So. In Fig. 15, the read circuit 540 includes a current 电压 voltage amplifier 442 shown in Fig. 12, and an analog to digital converter (ADC) 448. The analog digital converter 448 is operative to convert the analog voltage signal VI to a digital voltage signal Vd. The read circuit 540 uses the digital voltage signal Vd as the output signal So. In Fig. 16, the read circuit 540 includes a current-to-voltage amplifier 442 shown in Fig. 12, an inverting amplifier 446, and an analog-to-digital converter 448. The analog digital converter 448 is used to convert the analog second voltage signal 22 V2' to a digital voltage signal Vd2. The reading circuit 540 uses the digital voltage signal Vd2 as the output signal So. In the example illustrated in Figures 12 to 16, the characteristics of the circuit that is used to touch the sensor can be used to cause the read circuit 540 to read the sensing signal Si, and according to the sensing signal Si, for example, corresponding The current changes are applied to implement various correlation analysis with whether the sensed touch sensor 110 is stressed or stressed. In these examples, the sensing signal S i received by the reading circuit 520 is a signal in the form of current. That is, the sensing signal Si sensed by the touch sensor is a current signal, and thus, compared to the electrical waste signal, the current signal may be less susceptible to panel layout from the touch display panel 520. The voltage coupling effect of the element is affected, so that the sensing signal Si can be stably transmitted to the reading circuit 520 outside the panel. Referring to FIG. 11A, in one embodiment, the touch sensors of one row are coupled to the read circuit 540 for commonly outputting the sensing signal Si. Thus, when the read circuit 540 provides the output signal So according to the sensing signal Si, the positioning circuit 560 can position the touch display panel 520 to be touched according to the output signal So outputted by the read circuit 540. In another embodiment, the gate driver 580 is configured to generate a scan signal Gn for driving one of the pixel arrays, and the touch display panel 520 is driven by the gate driver 580 to display a picture. A column of the touch sensors is used to receive the scan signal Gn to be driven, and the touch sensors of the column receiving the scan signal Gn are disposed near the column of the pixel array. In this manner, the positioning circuit 560 can also determine, according to the scan signal Gn 23 201017606 1 w*to*tirrv, whether the touch sensor that generates the sensing signal Si is for such a touch sensor, and according to the sensing signal The Si determines the position of the touch sensor that is touched to position the touch display panel 520 to be touched. That is, when the reading circuit 540 receives the sensing signal Si from the touch sensors of one row and outputs the signal So, the positioning circuit 560 can locate the touch according to at least the scanning signal Gn and the output signal So. The display panel 520 is touched. For example, the touch display module 500 of the embodiment of the present invention can use the scan signal Gn and the output signal So according to the touch display panel® of the second to sixth and eighth embodiments. To locate the location that is touched. Since the touch sensor is driven by a scan signal Gn that drives a column (represented as one of the horizontal columns), the touch sensor is placed near the column of pixels. Therefore, the positioning circuit 560 can determine the longitudinal coordinate Dy of the touch sensor on the touch display panel 520 from the scan signal Gn. Furthermore, it is assumed that the touched touch sensor is the Yth touch sensor in a column of touch sensors, so that one of the Y touch sensors is included (represented as A plurality of touch sensors of one of the straight rows collectively output the sensing signal Si. Thus, when the reading circuit 540 receives the sensing signal Si and causes the positioning circuit 560 to detect the output signal So, the positioning circuit 560 can determine that the touch sensor is touched by the touch sensor. The lateral coordinate Dx on the panel 520. In this way, the positioning circuit 560 can locate the position of the touch sensor that is touched according to the lateral coordinate and the longitudinal coordinate (Dx, Dy), and can know the position of the touch display panel 520 being touched. . 24 201017606 _ > 1 - In the above case where the touch sensor receives the scan signal Gn to be driven, the touch display module 500 may further include a controller (not shown). The controller is operative to control the gate driver 580 to enable the gate driver 580 to sequentially output the scan signal. That is, the controller will be able to control the timing of the scan signal Gn and the positioning circuit 560 can refer to the timing controlled by the controller to locate the touched sensors that are driven. In practice, the positioning circuit 560 can be implemented in the internal circuitry of the controller. For example, the controller can be implemented by a Field Programmable Gate Array (FPGA), and the positioning circuit 560 can be implemented in a logic gate array of the FPGA. However, it is not limited thereto, and the positioning circuit 560 can also be implemented in an external circuit of the controller described above. It is within the scope of the present invention to provide a positioning circuit for locating the touched position by means of the sensing signal Si'. Although several embodiments of the above-described touch sensor integrated with the pixel array are exemplified by a pixel and a touch sensor. However, in other real spring applications, the touch sensor and the pixels may have different combinations, such as being arranged in a pixel array at a certain or different distribution ratio; for example, a partial touch The detector can be placed or extended beyond the display area of the pixel array for other applications. For example, by arranging a plurality of touch sensors between the pixel arrays, and detecting a plurality of sensing signals sensed by the touch sensors being touched, thereby different fingers or at the same time The touch position of the object on the panel can be positioned, so that a multi-touch display panel can be achieved. In addition, by detecting the sensing signal and the needs of the actual application, it can also be set to 25 201017606
1 TY I I 計為單觸碰式顯示面板。 此外，上述相關實施例以液晶面板之整合方式為例， 但其他顯示面板之技術，只要能在上下基板之間建構觸碰 感測器即可實施本發明所揭露之觸碰顯示面板。此外，上 述觸碰顯示面板實施例之感應開關元件及輔助開關元件 係以薄膜電晶體為例，然亦不限於此，在其他面板的技術 中，只要能實施感應電極令開關元件產生通道即可用以實 施如上述實施例中的觸碰顯示面板。 本發明上述實施例所揭露之觸碰感測器，係設置於第 Θ 一面板及第二面板之間，因此，觸碰感測器可於顯示面板 之製造過程中同時設置完成，故能達成整合於面板製程之 一觸碰式顯示面板。此外，本發明上述實施例所揭露之觸 碰式液晶顯示面板中，觸碰感測器係可藉由閘極驅動器， 如接受鄰近之掃描信號而得以受驅動，故不需額外的配線 以接收較遠處之信號，而能節省電路配線，亦不會增加成 本。還有，在一些實施例中，藉由輔助開關元件選擇性地 導通，使得受壓之觸碰感測器選擇性地產生感應信號，因 ❹ 此，能夠達到省電的功效。此外，由於本發明上述實施例 係利用因受壓所產生的感應通道，而得以感測觸碰之發生 或位置，故此並沒有光學式觸碰面板對於環境光之變異性 影響極鉅之問題，並且也沒有電容式觸控面板只能適合能 導電之物（如手指）在面板上觸碰始能感測的限制。 綜上所述，雖然本發明已以較佳實施例揭露如上，然 26 201017606 其並非用以限定本發明。本發明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内，當可作各種之 更動與潤飾。因此，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。1 TY I I is counted as a one-touch display panel. In addition, the above-mentioned related embodiments take the integration mode of the liquid crystal panel as an example, but other display panel technologies can implement the touch display panel disclosed in the present invention as long as the touch sensor can be constructed between the upper and lower substrates. In addition, the inductive switching element and the auxiliary switching element of the touch display panel embodiment are exemplified by a thin film transistor, but the invention is not limited thereto. In other panel technologies, the sensing electrode can be used to make the switching element generate a channel. To implement the touch display panel as in the above embodiment. The touch sensor disclosed in the above embodiment of the present invention is disposed between the first panel and the second panel. Therefore, the touch sensor can be simultaneously set in the manufacturing process of the display panel, so that the touch can be achieved. A touch panel that is integrated into one of the panel processes. In addition, in the touch-type liquid crystal display panel disclosed in the above embodiments of the present invention, the touch sensor can be driven by the gate driver, such as receiving the adjacent scan signal, so that no additional wiring is needed for receiving. The signal at a far distance can save circuit wiring and increase the cost. Also, in some embodiments, the auxiliary switching element is selectively turned on so that the pressurized touch sensor selectively generates an inductive signal, thereby achieving power saving. In addition, since the above embodiment of the present invention utilizes the sensing channel generated by the pressure to sense the occurrence or position of the touch, there is no problem that the optical touch panel has a great influence on the variability of the ambient light. And there is no capacitive touch panel that can only be used to limit the ability of conductive objects (such as fingers) to touch on the panel. In view of the above, the present invention has been disclosed in the above preferred embodiments, but it is not intended to limit the present invention. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the invention. Therefore, the scope of the invention is defined by the scope of the appended claims.
27 201017606 l W 斗64 丨 【圖式簡單說明】 第1A圖繪示依照本發明第一實施例之觸碰感測器之 結構圖。 第1B圖繪示依照本發明第一實施例之觸碰感測器於 受壓時感應出道通之結構圖。 第1C圖，其繪示依照本發明第一實施例之觸碰感測 器110應用於觸碰式顯示面板時之結構圖。 第2A圖繪示依照本發明第一實施例之觸碰感測器之 電路示意圖。 第2B圖繪示依照本發明第一實施例之觸碰感測器受 壓時產生感應信號之電路示意圖。 第3A圖繪示乃第1C圖之觸碰感測器應用於觸碰式 液晶顯示面板之示意圖。 第3B圖繪示依照第3A圖中剖面線AA’之觸碰式液 晶顯示面板之剖面圖。 第4圖繪示依照本發明第二實施例之觸碰式液晶顯 示面板之電路示意圖。 第5圖繪示依照本發明第三實施例之觸碰式液晶顯 示面板之電路示意圖。 第6圖繪示依照本發明第四實施例之觸碰式液晶顯 示面板之電路示意圖。 第7圖繪示依照本發明第五實施例之觸碰式液晶顯 示面板之電路示意圖。 第8圖繪示依照本發明第六實施例之觸碰式液晶顯 201017606 不面板之電路不意圖.。 . 第9圖繪示依照本發明第七實施例之觸碰式液晶顯 示面板之電路圖。 第10圖繪示依照本發明第八實施例之觸碰式液晶顯 示面板之電路圖。 第11A圖繪示為應用於本發明之實施例之觸碰式顯 示模組之一例之示意圖。 第11B圖繪示為應用於本發明之實施例之觸碰式顯 ❹示模組之另一例之示意圖。 第12至第16圖分別繪示本發明之實施例之觸碰式顯 示模組之讀取電路之電路圖之一例。 【主要元件符號說明】 110 :觸碰感測器 120 :第一基板 130 :第二基板 ❿ 140 :感應電極 150 :感應開關元件 151 :第一開關電極 152 :第二開關電極 153 :主動層 154 :介電層 155 :遮光層 畫素 29 160 201017606 置▼▼ ιοί 1 r rv 300.液晶顯不面板 450 :薄膜電晶體 450s :源極 450d :汲極 450g :閘極 500 :觸碰式顯示模組 520 :觸碰式顯示面板 540 :讀取電路27 201017606 l W 斗 64 丨 [Simplified description of the drawings] Fig. 1A is a view showing the structure of a touch sensor according to a first embodiment of the present invention. FIG. 1B is a structural diagram showing the touch-sensing of the touch sensor according to the first embodiment of the present invention. FIG. 1C is a structural diagram showing the touch sensor 110 applied to the touch display panel according to the first embodiment of the present invention. Fig. 2A is a circuit diagram showing a touch sensor in accordance with a first embodiment of the present invention. FIG. 2B is a schematic diagram showing a circuit for generating an inductive signal when the touch sensor is pressed according to the first embodiment of the present invention. Fig. 3A is a schematic view showing the touch sensor of Fig. 1C applied to a touch type liquid crystal display panel. Fig. 3B is a cross-sectional view showing the touch type liquid crystal display panel in accordance with the section line AA' in Fig. 3A. Fig. 4 is a circuit diagram showing a touch type liquid crystal display panel in accordance with a second embodiment of the present invention. Fig. 5 is a circuit diagram showing a touch type liquid crystal display panel in accordance with a third embodiment of the present invention. Figure 6 is a circuit diagram showing a touch-type liquid crystal display panel in accordance with a fourth embodiment of the present invention. Figure 7 is a circuit diagram showing a touch-type liquid crystal display panel in accordance with a fifth embodiment of the present invention. Figure 8 is a diagram showing the circuit of the touch-screen type liquid crystal display 201017606 according to the sixth embodiment of the present invention. Fig. 9 is a circuit diagram showing a touch type liquid crystal display panel in accordance with a seventh embodiment of the present invention. Fig. 10 is a circuit diagram showing a touch panel type liquid crystal display panel in accordance with an eighth embodiment of the present invention. Fig. 11A is a diagram showing an example of a touch display module applied to an embodiment of the present invention. FIG. 11B is a schematic diagram showing another example of a touch display module applied to an embodiment of the present invention. 12 to 16 are diagrams each showing an example of a circuit diagram of a reading circuit of the touch display module according to the embodiment of the present invention. [Main component symbol description] 110: touch sensor 120: first substrate 130: second substrate ❿ 140: sensing electrode 150: inductive switching element 151: first switching electrode 152: second switching electrode 153: active layer 154 : Dielectric layer 155 : shading layer pixel 29 160 201017606 设置 ▼ ▼ ιοί 1 r rv 300. LCD display panel 450 : thin film transistor 450s : source 450d : bungee 450g : gate 500 : touch display mode Group 520: touch display panel 540: read circuit
560 :定位電路 G 580 ··閘極驅動器 dl、d2 :間距560 : Positioning circuit G 580 ··Gate driver dl, d2: pitch
Gn :掃描信號Gn: scan signal
Si :感應信號Si: sensing signal
Vcom :共同電壓Vcom: common voltage
Vr、Vr2 :電壓信號 X、Y :走線 ❹ 30Vr, Vr2: voltage signal X, Y: trace ❹ 30