201246040 六、發明說明： 【發明所屬之技術領域】 本發明係與液晶顯示器有關；具體而言，本發明係關於 一種能夠提升感測電壓準確度並保有抗雜訊能力之互感式 電容觸控感測裝置。 【先前技術】 隨著科技快速發展，薄膜電晶體液晶顯示器(TFTLCD)已 逐步取代傳統顯示器，並已廣泛應用於電視、平面顯示器、行 動電話、平板電腦以及投影機等各種電子產品上。對於具有觸 控功能的薄膜電晶體液晶顯不而言，觸控感測器是其重要的 模組之一’其性能之優劣也直接影響液晶顯示器之整體效能。 一般而言，傳統具有互感式電容觸控功能的液晶顯示器 包含有顯示面板、導電薄膜感應器(ITO sensor)以及觸控控制晶 片。其中，導電薄膜感應器包含有複數條感測線及複數條驅動 線’而觸控控制晶片則包含有複數個接腳。該等感測線分別耦 接該等接腳。當驅動線傳送一驅動脈衝並於感測線耦合一微小 電壓後，觸控控制晶片將會感測耦合電壓並根據耦合電壓的大 小去判斷導電薄膜感應器是否被觸控。 具體而言，觸控感測裝置之效能取決於導雷簿膜咸鹿薄 感測電壓精確度❶觸控感測裝置包含有放大模組，而組 之輸入方式可分減錄人模式及單德人赋。_差動輸 入模式的優點是擁有良好的抗雜訊能力，但其缺點是無法在面 板邊界上感測到準確的賴資訊。至於採用單端輸入模式的優 點是能夠精確地感測面板邊界的電壓，但其抗雜訊的能力較 201246040 差。、，此’無論傳統的觸控感測裝置之放大模組所採用的輸入 方f是差動輸入模式或單端輸入模式，均存在著上述之缺點’ 使得整體觸控感測裝置之效能無法獲得提升。 因此，本發明提出一種能夠提升感測電壓之準確度並保 有良好的抗雜訊能力之互感式電容觸控感測裝置，以 述問題。 【發明内容】 本發明之一範嚕在於提供一種觸控感測裝置。於一實施 例中，該觸控感測裝置包含邏輯控制模組及多工器。多工器 包含切換模組。切換模組包含複數對差動輸入開關及一對單 端輸入開關。切換模組依照該切換控制訊號控制該複數對差 動輸入開關及該對單端輸入開關之開啟或關閉，以控制複數個 感測電壓之輸入模式。該等感測電壓為分別感測自導電薄膜感 應器之複數條感測線的類比資料，且該複數條感測線分別對應 於複數個通道。 於一實施例中，觸控感測裝置進一步包含放大模組。放 大模組包含有正輸入端及負輸入端。放大模組依照該等控制訊 號中之放大控制訊號將自正輸入端及負輸入端所接收之兩電 壓相減並放大後，並輸出放大後之類比資料。 於一實施例中，該對單端輸入開關包含正單端輸入開關 及負單端輸入開關。每一對差動輸入開關均包含正差動輸入開 關及負差動輸入開關。正差動輸入開關及負差動輸入開關均耦 接至參考電壓。該等正差動輸入開關均耦接至放大模組之正輸 入端及正單端輸入開關，該等負差動輸入開關均耦接至放大模 201246040 組之負輸入端及負單端輸入開關。 #於-實闕中’觸城職置進—步包含類比/數位轉換 模組。類比/數位轉換模組耦接至該邏輯控制模組，用以將 該放大後之類比㈣轉換成-触資料，並觸數位資料 出至該邏輯控制模組。 於一實施例中，觸控感測裝置進一步包含儲存控制模 組。儲存控制模組包含有第一開關、第二開_、第三開關及 儲存電容減於放賴組之輸出端與類比/數位 轉換模組之關之—翻接至第二關與類比/數 位轉換模組之間且另一端耦接至接地端；第三開關之一端耦 接至第二開_/數位轉換歡之間且另—端_至儲 存電容；儲存電容減至接地端。齡電容依照該等控制訊 號中之儲存控制訊號儲存放大後之類比資料。 於一實施例中，觸控感測裝置進一步包含複數個接腳。 多工器進一步包含至少一驅動/感測控制模組。驅動/感測控 制模組耦接至邏輯控制模組、該等接腳及切換模組，用以= 照該等控制訊號之驅動/感測控制訊號控制該等接腳分別執 行複數種接腳功能，致使該等接腳能夠自該導電薄膜咸 的該等感職制到料感測電壓。 棚 於一實施例中，於第一單端輸入模式下，切換模組依照 切換控制訊號控制正單端輸入開關開啟，致使放大模組之正輸 入端輕接至參考電壓，負輸入端接收到導電薄臈感應器之第一 邊界感測電壓。 於一實知例中，於第一差動輸入模式下，切換模組依照 切換控制訊號控制相鄰的第一對差動輸入開關之正差動輸二 201246040 開關與第二對差動輸人關之貞差錄人關開啟，致使放大 模組之正輸入端接收第一感測電壓且負輸入端接收第二感測 電壓，於第二差動輸人模式下，切換模組依购換控制訊號控 制第一對差動輸入開關之負差動輸入開關與第二對差動輸入 開關之正差動輸入開關開啟，致使正輸入端接收第二感測電壓 且負輸入端接收第三感測電壓。 於一實施例中，於第二單端輸入模式下，切換模組依照 切換控制訊號控制負單端輸入開關開啟，致使放大模組之正輸 ^端，收到導電薄賴應器之第二邊界感測電壓，負輸 接至參考雷懕。 夕笛二例中，.當多卫器所接收到岐導電薄膜感應器 值、、Ή 1《測電屋或第二邊界感測電壓時’邏輯控制模組 -^二控舰號至切換模組，以執行第—單端輸人模式或第 "一單輸入模式。 Μ於先前技術’根據本發明之馳制裝置係透過邏 生切換㈣喊，致使之娜模組控制 而借觸Μ輸人開關及—對單端輸人關之開啟或關閉，進 並非導雷笔^ 情況下，觸控感測裝置所接收的 歐隹導電薄膜顯示器之邊界感測接腳所感測到之感 接收^的Hi會啟動差動輸入模式。一旦觸控感測裝置所 測電壓，切=顯示器„之邊界感測接腳所_到之感 觸控感職置纽鱗端輸人模式。因此，本發明之 夠有壓輸出模式’不僅能 能力，並可節省實度’逛能同時保有良好的抗雜訊 喝貫現上述功能所需之記憶體空間。 201246040 關於本發明之優點與精神可以藉由以下的發明詳述及 所附圖式得到進一步的瞭解。 【實施方式】 根據本發明之一具體實施例為觸控感測裝置。於此實施 例中，該觸控感測裝置可以是互感式電容觸控感測裝置，但 不以此為限。 請參照圖1 ’圖1係繪示本發明之觸控感測裝置i對於顯 不面板進行觸控點感測之示意圖。如圖i所示，液晶顯示器 包含有導電薄膜感應器100以及觸控感測裝置i。至於液晶 顯示面板一般是貼合在導電薄膜感應器1〇〇下，但不以此為 限。觸控感測襞置1包含有邏輯控制模組10、複數個接腳2〇、 至少一多工器30、至少一放大模組40、至少一儲存控制模 組50及類比/數位轉換模組6〇 〇其中，每一個多工器3〇包 含有驅動/感測控制模組300及切換模組302。 其中，邏輯控制模組10分別耦接至驅動/感測控制模組 300、切換模組302、放大模組40及儲存控制模組50 ;驅動 /感測控制模組300耦接至該等接腳20及切換模組3〇2 ;切 換模組302輕接至放大模組4〇 ;放大模組4〇輕接至儲存控 制模組50 ;儲存控制模組50耦接至類比/數位轉換模組6〇 ; 類比/數位轉換模組60耦接至邏輯控制模組1〇。 如圖1所示，導電薄膜感應器1〇〇包含有互相垂直分布 的複數條感測線80及複數條驅動線90。需說明的是，驅動 線90與感測線80是可互換的，也就是說圖1中的9〇實際上 也可當感測線’圖1中的80實際上也可當驅動線，可由觸控 201246040 感測裝置1所控制。 該等接腳20不只具有單一種功能，而是可以視實際需 . 求於不同功能之間進行切換，例如驅動(driving)功能、感測 (sensing)功能、接地(ground)功能或浮接(floating)功能，但不 以此為限。每一個驅動/感測控制模組300係根據該等控制 訊號中之感測控制訊號控制該等接腳20執行感測功能，以 透過導電薄膜感應器之該等感測線80或90感測到複數 筆類比資料。 每一個驅動/感測控制模組300自邏輯控制模組1〇接收 該等控制訊號中之驅動/感測控制訊號，並依照驅動/感測控 制訊號之驅動/感測控制時序控制該等接腳20分別執行複數 種接腳功能，致使該等接腳20能夠分別自導電薄膜感應器 100的複數條感測線80或90感測到複數個感測電壓。在此 實施例中’驅動/感測控制模組300包含複數組驅動/感測開 關。如圖2所示’驅動/感測控制模組3〇〇包含第一組驅動/ 感測開關SW11〜SW13、第一接地開關SW14、第二組驅動/ 感測開關SW21〜SW23及第二接地開關SW24。其中，驅動 /感測開關SW11〜SW13係分別耦接至接腳si、％及S5 ;驅 動/感測開關SW21〜SW23係分別耦接至接腳82、§4及％ ; 第一接地開關SW14係耦接於驅動/感測開關SWU〜SW13 之一端與接地端之間；第二接地開關SW24係耦接於驅動/ 感測開關SW21〜SW23之一端與接地端之間。 假設第-接地開關SW14及第二接地開關SW24均處於 關閉狀態，當驅動/感測開關SW11及SW21開啟時，接腳 S1及S2所測得的第一感測電壓及第二感測電壓即可分 過驅動/感測開關SW11及、SW21輸出至切換模組3〇2 ;當驅 201246040 動/感測開關SW12及SW22開啟時，接腳S3及S4所測得 的第三感測電壓及第四感測電壓即可分別通過驅動/感測^ 關SW12及SW22輸出至切換模組302 ;當驅動/感測開關 SW13及SW23開啟時，接腳S5及S6所測得的第五感測電 壓及第六感測電壓即可分別通過驅動/感測開關SW13及 SW23輸出至切換模組302。 在此實施例中，邏輯控制模組1〇產生不同控制時序之 複數個控制訊號’該等控制訊號包含切換控制訊號。切換模 組302包含複數對差動輸入開關及一對單端輸入開關。如圖2 所示，切換模組302包含第一對差動輸入開關SW3i及 SW32、第二對差動輸入開關SW41及SW42與一對單端輸入 開關SW51及SW52。其中’ SW31為第一正差動輸入開關且 SW32為第一負差動輸入開關；SW41為第二正差動輸入開關 且SW42為第二負差動輸入開關；SW51為正單端輸入開關且 SW52為負單端輸入開關。正單端輸入開關SW51及負單端輸 入開關SW52均耦接至一參考電壓Vt，第一正差動輸入開關 SW31與第二正差動輸入開關SW41均耦接至放大模組40之 正輸入端+及正單端輸入開關SW51，第一負差動輸入開關 SW32與第二負差動輸入開關SW42均耦接至放大模組40之 負輸入端一及負單端輸入開關SW52。 切換模組302將會依照切換控制訊號控制第一對差動輸 入開關中之第一正差動輸入開關SW31及第一負差動輸入開 關SW32、第二對差動輸入開關中之第二正差動輸入開關 SW41及第二負差動輸入開關SW42與該對單端輸入開關中之 正單端輸入開關SW51及負單端輸入開關SW52之開啟或關 閉’以控制複數個感測電壓之輸入模式。其中，該等感測電壓 201246040 為分別感測自導電薄膜感應器100之複數條感測線80或90 的類比資料’且該複數條感測線8〇或9〇分別對應於複數個通 道0 接下來 村刀別就觸控感測裝置i於各種不同的單端輸 入模式及差動輸入模式下運作之情形進行說明。需先說明的 是，當輸入的感測電壓屬於剛開始或最後的邊界感測電壓 時，觸控感測裝置1將會運作於單端輸入模式下，以獲得完 整資訊，至於在其他非邊界感測電壓的情況下，觸控感測裝 置1將會運作於差動輸入模式下，以提升其抗雜訊的能力: 觸控感測裝置1可視實際需求於單端輸入模式與差動輸入模 式之間進行自由切換，並不以下列實施例為限。 如圖2所示，於此實施例中，由於觸控感測裝置丨總共 包含有六個接腳S1〜S6 ’因此’在一開始與最後輸入的接腳 S1與S6的第一感測電壓與第六感測電壓均屬於邊界感測電 壓。首先，由於一開始輸入的感測電壓V1屬於邊界感測電 壓，故於第一時間點，觸控感測裝置i將會運作於第—單端 輸入模式下，驅動/感測開關SW11及SW21開啟。於第一單 端輸入模式下，切換模組3〇2將會依照切換控制訊號控制正單 端輸入開關SW51開啟，致使放大模組4〇之正輸入端+輕接 至參考電壓Vt，放大模組40之負輸入端—則會接收到接腳“ 的第一感測電壓。此時，接腳S1的第一感測電壓屬於邊 測電壓。 ' 1鐵 接著，由於後續輸入的感測電壓不再屬於邊界感測 壓，而是屬於非邊界感測電壓，故觸控感測裝置丨接下： 會交替地運作於第一差動輸入模式及第二差動輸入模式^將201246040 VI. Description of the Invention: [Technical Field] The present invention relates to a liquid crystal display; in particular, the present invention relates to a mutual inductance capacitive touch that can improve sensing voltage accuracy and maintain anti-noise capability Measuring device. [Prior Art] With the rapid development of technology, thin film transistor liquid crystal displays (TFTLCDs) have gradually replaced traditional displays, and have been widely used in various electronic products such as televisions, flat panel displays, mobile phones, tablet computers, and projectors. For the thin film transistor liquid crystal with touch function, the touch sensor is one of its important modules. The performance of the touch sensor directly affects the overall performance of the liquid crystal display. In general, a conventional liquid crystal display having a mutual capacitive touch function includes a display panel, an ITO sensor, and a touch control wafer. The conductive film sensor includes a plurality of sensing lines and a plurality of driving lines, and the touch control chip includes a plurality of pins. The sensing lines are coupled to the pins, respectively. When the driving line transmits a driving pulse and a small voltage is coupled to the sensing line, the touch control chip senses the coupling voltage and determines whether the conductive film sensor is touched according to the size of the coupling voltage. Specifically, the performance of the touch sensing device depends on the accuracy of the lightning sensing film thickness of the lightning film, the touch sensing device includes an amplifying module, and the input mode of the group can be divided into a recording mode and a single Deren Fu. The advantage of the differential input mode is that it has good anti-noise capability, but the disadvantage is that it does not sense accurate information on the board boundary. The advantage of using the single-ended input mode is that it can accurately sense the voltage at the panel boundary, but its noise immunity is worse than 201246040. Regardless of the input side f of the conventional touch sensing device, the input side f is a differential input mode or a single-ended input mode, and all of the above disadvantages exist, so that the performance of the overall touch sensing device cannot be achieved. Get promoted. Therefore, the present invention proposes a mutual inductance capacitive touch sensing device capable of improving the accuracy of the sensing voltage and maintaining good anti-noise capability, and the problem is described. SUMMARY OF THE INVENTION One aspect of the present invention is to provide a touch sensing device. In one embodiment, the touch sensing device includes a logic control module and a multiplexer. The multiplexer contains a switching module. The switching module includes a plurality of pairs of differential input switches and a pair of single-ended input switches. The switching module controls the switching of the plurality of differential input switches and the pair of single-ended input switches according to the switching control signal to control an input mode of the plurality of sensing voltages. The sensing voltages are analog data of a plurality of sensing lines respectively sensed from the conductive film sensor, and the plurality of sensing lines respectively correspond to the plurality of channels. In one embodiment, the touch sensing device further includes an amplification module. The amplification module contains a positive input and a negative input. The amplifying module subtracts and amplifies the two voltages received from the positive input terminal and the negative input terminal according to the amplification control signal in the control signals, and outputs the amplified analog data. In one embodiment, the pair of single-ended input switches includes a positive single-ended input switch and a negative single-ended input switch. Each pair of differential input switches includes a positive differential input switch and a negative differential input switch. Both the positive differential input switch and the negative differential input switch are coupled to a reference voltage. The positive differential input switches are coupled to the positive input terminal of the amplification module and the positive single-ended input switch, and the negative differential input switches are coupled to the negative input terminal of the amplification mode 201246040 group and the negative single-ended input switch. . #于-实阙中' Touching the City into the step—including the analog/digital conversion module. The analog/digital conversion module is coupled to the logic control module for converting the amplified analogy (4) into a touch data, and touching the digital data to the logic control module. In one embodiment, the touch sensing device further includes a storage control module. The storage control module includes a first switch, a second open_, a third switch, and a storage capacitor minus the output of the immersive group and the analog/digital conversion module - flipping to the second level and analog/digital The other end of the conversion module is coupled to the ground end; one end of the third switch is coupled to the second open _/digit conversion switch and the other end is to the storage capacitor; the storage capacitor is reduced to the ground. The age capacitor stores the amplified analog data according to the storage control signals in the control signals. In one embodiment, the touch sensing device further includes a plurality of pins. The multiplexer further includes at least one drive/sense control module. The driving/sensing control module is coupled to the logic control module, the pins and the switching module, and is configured to control the pins to perform a plurality of pins respectively according to the driving/sensing control signals of the control signals. The function is such that the pins are capable of sensing the voltage from the sensing of the conductive film. In an embodiment, in the first single-ended input mode, the switching module controls the positive single-ended input switch to be turned on according to the switching control signal, so that the positive input terminal of the amplification module is lightly connected to the reference voltage, and the negative input terminal receives The first boundary sensing voltage of the conductive thin 臈 sensor. In a practical example, in the first differential input mode, the switching module controls the positive differential transmission of the adjacent first pair of differential input switches according to the switching control signal. The 201246040 switch and the second pair of differential input are controlled. The switch is turned on, so that the positive input terminal of the amplifying module receives the first sensing voltage and the negative input terminal receives the second sensing voltage. In the second differential input mode, the switching module purchases the control signal according to the second differential input mode. Controlling the positive differential input switch of the first pair of differential input switches and the positive differential input switch of the second pair of differential input switches to open, such that the positive input terminal receives the second sensing voltage and the negative input terminal receives the third sensing voltage . In an embodiment, in the second single-ended input mode, the switching module controls the negative single-ended input switch to be turned on according to the switching control signal, so that the positive input terminal of the amplification module receives the second of the conductive thin immersion device. The boundary senses the voltage and the negative is connected to the reference Thunder. In the case of Xidi, when the multi-guard receives the value of the conductive film sensor, Ή 1 "measurement house or the second boundary sensing voltage" logic control module - ^ two control ship number to switch mode Group to perform the first-single-ended input mode or the first-one input mode. In the prior art, the mobile device according to the present invention is shouted by a logic switch (four), causing the control of the module to be touched by the switch, and the opening or closing of the single-ended input switch. In the case of the pen ^, the touch sensed by the boundary sensing pin received by the touch sensing device receives the differential input mode. Once the voltage measured by the touch sensing device is cut, the touch sensing function of the display „the touch sensor is placed in the button input mode. Therefore, the sufficient output mode of the present invention is not only capable. And can save the real 'staying while retaining a good anti-noise to drink the memory space required for the above functions. 201246040 The advantages and spirit of the present invention can be obtained by the following detailed description of the invention and the drawings Further, an embodiment of the present invention is a touch sensing device. In this embodiment, the touch sensing device may be a mutual capacitive capacitive touch sensing device, but Please refer to FIG. 1 , which is a schematic diagram of the touch sensing device of the present invention for sensing touch points of a display panel. As shown in FIG. 1 , the liquid crystal display includes a conductive thin film sensor 100 . And the touch sensing device i. The liquid crystal display panel is generally attached to the conductive film sensor, but is not limited thereto. The touch sensing device 1 includes a logic control module 10 and a plurality of Pin 2〇, at least a multiplexer 30, at least one amplification module 40, at least one storage control module 50, and an analog/digital conversion module 6, wherein each multiplexer 3 includes a driving/sensing control module 300 and The switching module 302 is coupled to the driving/sensing control module 300, the switching module 302, the amplifying module 40, and the storage control module 50; and the driving/sensing control module 300 is coupled The switch module 302 is connected to the amplifier module 4〇; the amplifier module 4 is connected to the storage control module 50; the storage control module 50 is coupled to The analog/digital conversion module 6 is coupled to the logic control module 1A. As shown in FIG. 1, the conductive film sensor 1 includes a plurality of sensing lines 80 that are vertically distributed with each other. And a plurality of driving lines 90. It should be noted that the driving line 90 and the sensing line 80 are interchangeable, that is, the 9〇 in FIG. 1 can also be used as the sensing line '80 in FIG. 1 When the driving line is controlled by the touch 201246040 sensing device 1. The pins 20 not only have a single function, but It is possible to switch between different functions according to actual needs, such as driving function, sensing function, ground function or floating function, but not limited to this. The driving/sensing control module 300 controls the pins 20 to perform a sensing function according to the sensing control signals in the control signals to sense the plurality of pens through the sensing lines 80 or 90 of the conductive film sensor. Analog data. Each drive/sense control module 300 receives drive/sensing control signals from the control signals from the logic control module 1 and controls the timing of driving/sensing control according to the driving/sensing control signals. The pins 20 respectively perform a plurality of pin functions, such that the pins 20 can sense a plurality of sensing voltages from the plurality of sensing lines 80 or 90 of the conductive film sensor 100, respectively. In this embodiment the 'drive/sense control module 300' includes a complex array drive/sense switch. As shown in FIG. 2, the 'drive/sense control module 3' includes a first set of drive/sense switches SW11-SW13, a first ground switch SW14, a second set of drive/sense switches SW21-SW23, and a second ground. Switch SW24. The driving/sensing switches SW11 to SW13 are respectively coupled to the pins si, % and S5; the driving/sensing switches SW21 to SW23 are respectively coupled to the pins 82, § 4 and %; the first grounding switch SW14 The grounding switch SW24 is coupled between one end of the driving/sense switch SW21~SW23 and the ground end. Assuming that the first grounding switch SW14 and the second grounding switch SW24 are both in a closed state, when the driving/sensing switches SW11 and SW21 are turned on, the first sensing voltage and the second sensing voltage measured by the pins S1 and S2 are The driving/sensing switches SW11 and SW21 can be output to the switching module 3〇2; when the driving 201246040 moving/sensing switches SW12 and SW22 are turned on, the third sensing voltage measured by the pins S3 and S4 and The fourth sensing voltage can be output to the switching module 302 through the driving/sensing switches SW12 and SW22 respectively; when the driving/sensing switches SW13 and SW23 are turned on, the fifth sensing measured by the pins S5 and S6 The voltage and the sixth sensing voltage can be output to the switching module 302 through the driving/sensing switches SW13 and SW23, respectively. In this embodiment, the logic control module 1 generates a plurality of control signals for different control timings. The control signals include switching control signals. Switching module 302 includes a plurality of pairs of differential input switches and a pair of single-ended input switches. As shown in FIG. 2, the switching module 302 includes a first pair of differential input switches SW3i and SW32, a second pair of differential input switches SW41 and SW42, and a pair of single-ended input switches SW51 and SW52. Where 'SW31 is the first positive differential input switch and SW32 is the first negative differential input switch; SW41 is the second positive differential input switch and SW42 is the second negative differential input switch; SW51 is the positive single-ended input switch and SW52 is a negative single-ended input switch. The positive single-ended input switch SW51 and the negative single-ended input switch SW52 are both coupled to a reference voltage Vt, and the first positive differential input switch SW31 and the second positive differential input switch SW41 are coupled to the positive input of the amplification module 40. The first negative differential input switch SW32 and the second negative differential input switch SW42 are coupled to the negative input terminal of the amplification module 40 and the negative single-ended input switch SW52. The switching module 302 controls the first positive differential input switch SW31 and the first negative differential input switch SW32 of the first pair of differential input switches and the second positive of the second pair of differential input switches according to the switching control signal. The differential input switch SW41 and the second negative differential input switch SW42 and the positive single-ended input switch SW51 and the negative single-ended input switch SW52 of the pair of single-ended input switches are turned on or off to control the input of the plurality of sensing voltages. mode. The sensing voltage 201246040 is an analog data sensed by the plurality of sensing lines 80 or 90 respectively from the conductive film sensor 100, and the plurality of sensing lines 8〇 or 9〇 respectively correspond to a plurality of channels 0. The village knife does not describe the case where the touch sensing device i operates in various single-ended input modes and differential input modes. It should be noted that when the input sensing voltage belongs to the beginning or the last boundary sensing voltage, the touch sensing device 1 will operate in the single-ended input mode to obtain complete information, as for other non-boundaries. In the case of sensing voltage, the touch sensing device 1 will operate in the differential input mode to enhance its anti-noise capability: The touch sensing device 1 can be used in single-ended input mode and differential input depending on actual needs. Free switching between modes is not limited to the following embodiments. As shown in FIG. 2, in this embodiment, since the touch sensing device 丨 includes a total of six pins S1 SS6 'the first sensing voltage of the first and last input pins S1 and S6 Both the sixth sensing voltage and the sixth sensing voltage belong to the boundary sensing voltage. First, since the sensing voltage V1 initially input belongs to the boundary sensing voltage, at the first time point, the touch sensing device i will operate in the first-side input mode, and the driving/sensing switches SW11 and SW21 Open. In the first single-ended input mode, the switching module 3〇2 will control the positive single-ended input switch SW51 according to the switching control signal, so that the positive input terminal of the amplification module 4〇 is lightly connected to the reference voltage Vt, the amplification mode The negative input of group 40 will receive the first sense voltage of the pin. At this time, the first sense voltage of pin S1 belongs to the edge test voltage. '1 iron then, due to the subsequent input sense voltage No longer belongs to the boundary sensing voltage, but belongs to the non-boundary sensing voltage, so the touch sensing device is connected: it will alternately operate in the first differential input mode and the second differential input mode.
S 11 201246040 於第一時間點，驅動/感測開關swu及SW21開啟， 接腳S1的第-感測電壓與接腳S2㈣二感測電壓能夠通過 驅動/感_關SW11及SW21輸itj至切換模組 302。此時， 觸控感測裝置1運作於第—差動輸人模式下，切換模組3〇2 將會依照場控制訊號控制第—對差動輸人關中之第一正 差動輸入關SW31與第二對差動輸人_中之第二負差動 輸入開關SW42卩丨啟，致餘大触4()之正輸人端+接收接 腳S1的第-感測電壓且放大模組4〇之負輸入端—接收接腳 S2的第一感測電壓。此時，接腳S1的第一感測電壓與接腳 S2的第一感測電壓均屬於非邊界感測電壓。 於第二時間點，驅動/感測開關SW21及SW12開啟， 接腳S2的第一感測電壓與接腳S3的第三感測電壓能夠通過 驅動/感測開關SW21及SW12輸出至切換模組3〇2。此時， 觸控感測裝置1運錄第二差動輸人模式下，切換模組3〇2 依照切換控制訊號控制第一對差動輸入開關中之第一負差動 輸入開關SW32與第二對差動輸入開關中之第二正差動輸入 開，SW41開啟’致使放大模組4〇之正輸入端+接收接腳S2 的第二感測電壓且放大模組40之負輸入端一接收接腳S3的第 一感測電壓。此時，接腳S2的第二感測電壓與接腳S3的第 三感測電壓均屬於非邊界感測電壓。 於第四時間點，驅動/感測開關SW12及SW22開啟， 接腳S3的第二感測電虔與接腳§4的第四感測電壓能夠通過 驅動/感測開關SW12及SW22輸出至切換模組3〇2。此時， 觸控感測裝置1又回到運作於第一差動輸入模式下，切換模 組302將會依照切換控制訊號控制第一對差動輸入開關中之 第一正差動輸入開關SW31與第二對差動輸入開關中之第二 12 201246040 負差動輸入開關SW42開啟，致使放大模組4〇之正輸入端+ 接收接腳S3的第三感測電壓且放大模組4〇之負輸入端一接 收接腳S4的第四感測電壓。此時，接腳S3的第三感測電壓 與接腳S4的第四感測電壓均屬於非邊界感測電壓。 於第五時間點，驅動/感測開關SW22及SW13開啟， 接腳S4的第四感測電壓與接腳S5的第五感測電壓能夠通過 驅動/感測開關SW22及SW13輸出至切換模組302。此時， 觸控感測裝置1將會運作於第二差動輸入模式下，切換模組 302依照切換控制訊號控制第一對差動輸入開關中之第一負差 動輸入開關SW32與第二對差動輸入開關中之第二正差動輸 入開關SW41開啟’致使放大模組4〇之正輸入端+接收接腳 S4的第四感測電壓且放大模組4〇之負輸入端—接收接腳％ 的第五感測電壓。此時，接腳S4的第四感測電壓與接腳S5 的第五感測電壓均屬於非邊界感測電壓。 於第六時間點’驅動/感測開關SW13及SW23開啟， 接腳S5的第五感測電壓與接腳S6的第六感測電壓能夠通過 驅動/感測開關SW13及SW23輸出至切換模組302。此時， 觸控感測裝置1又回到運作於第一差動輸入模式下，切換模 組302將會依照切換控制訊號控制第一對差動輸入開關中之 第一正差動輸入開關SW31與第二對差動輸入開關中之第二 負差動輸入開關SW42開啟，致使放大模組4〇之正輸入端+ 接收接腳S5的第五感測電壓且放大模組4〇之負輸入端—接 收接腳S6的第六感測電壓。此時，接腳S5的第五感測電壓 與接腳S6的第六感測電壓均屬於非邊界感測電壓。 最後’於第七時間點，由於此時從接腳S6輸入的第六 感測電壓屬於邊界感測電壓，故觸控感測裝置丨將會運作於 201246040 第二單端輸入模式下，驅動/感測開關SW13及SW23開啟。 於第二單端輸入模式下，切換模組302將會依照切換控制訊號 控制負單端輸入開關SW52開啟，致使放大模組40之正輸入 端+接收到接腳S6的第六感測電壓，放大模組40之負輸入 端一則會耦接至參考電壓Vt。此時，最後輸入之接腳S6的第 六感測電壓即屬於邊界感測電壓。 無論是上述哪一種輸入模式，當放大模組4〇的正輸入端 +與負輸入端一分別接收到各感測電壓或參考電壓時，—將會 依照邏輯控制模組10傳送過來的放大控制訊號將自正輸入端 +與負輸入端一所接收之兩感測電壓或參考電壓相減並放大 後，輸出一放大後之類比資料至儲存控制模組5〇。 如圖2所示’儲存控制模組5〇包含有第一開關SW61、 第二開關SW62、第三開關SW63及儲存電容c。其中，第 一開關SW62 _接於放大模組4〇之輸出端與類比/數位轉換 模組60之間；第一開關SW61之一端耦接至第二開關SW62 與類比/數轉換_6GUl另—輪接至接地端；第三 開關SW63之一端耦接至第二開關SW62與類比/數位轉換 模組6〇之間且另-魏接至儲存電容c ;儲存電容c輕接 至接地端。當Μ存控制模组％依照邏輯控纖_ 1〇傳送過 來的儲存控制峨控㈣二開關SW62與第三開關讓3開 啟時’放大模組40之輸出端所輸出的放大後之類比資料可 透，第二關SW62與第三開關s·傳送至儲存電容c， 接著’儲存控麵組50依_存控制峨控制第三開關 SW63關閉後，儲存電容c即可儲存放大後之類比資料。 。在放大後之類比資料輸出並儲存至儲存電容 C之前，邏 輯控制模組10傳送接地控制訊餘儲存控麵組5G，致使 201246040 Ϊ地存在广C上的電壓先行放 結構可依照辑求峨:=圖=:;;7。之 ㈣位，莫組60耦接至儲存控制模組5〇及邏輯 任意‘：=，==組_是 輯控發=控翻裝置係透過邏 递㈣兰綠換控制途使多工器之切換模組控制 而#縮批^入開關及一對單端輸入開關之開啟或關閉，進 能夠任意地在差動輸入模式與單端輸入 切換。在一般情況下’觸控感測裝置所接收的 ^非導電相顯示器之邊界感測接腳所感測到之感測電 妓队刀，、=組即會啟動差動輸人模式一旦觸控感測裝置所 接收到的是導電薄膜顯示器之邊界感測接腳所感測到之感 測電壓’切換模組即會啟動單端輸入模式。因此，本發明之 觸控感測裝置㈣透勒換模組控制·輸出模式，不僅能 狗有效提升感測賴之精確度，還朗時保有良好的抗雜訊 能力’並可節省實現上述魏所需之記憶體空間。 藉由以上較佳具體實施例之詳述，係希望能更加清楚 描述本發明之特徵與精神，而並非以上述所揭露的較佳具 體實施例來對本發明之範疇加以限制。相反地，其目的是 希望能涵蓋各種改變及具相等性的安排於本發明所欲申請 之專利範圍的範舜内。S 11 201246040 At the first time point, the drive/sense switches swu and SW21 are turned on, and the first sense voltage of the pin S1 and the pin S2 (four) two sense voltages can be switched to the switch by the drive/sense_off SW11 and SW21. Module 302. At this time, the touch sensing device 1 operates in the first-differential input mode, and the switching module 3〇2 will control the first positive differential input switch SW31 in the differential input switch according to the field control signal. And the second negative differential input switch SW42 of the second pair of differential input _, the first sense voltage of the positive input terminal + the receiving pin S1 of the remaining large touch 4 () and the amplification module The negative input terminal of the terminal 4 receives the first sensing voltage of the pin S2. At this time, the first sensing voltage of the pin S1 and the first sensing voltage of the pin S2 belong to the non-boundary sensing voltage. At the second time, the driving/sensing switches SW21 and SW12 are turned on, and the first sensing voltage of the pin S2 and the third sensing voltage of the pin S3 can be output to the switching module through the driving/sense switches SW21 and SW12. 3〇2. At this time, when the touch sensing device 1 records the second differential input mode, the switching module 3〇2 controls the first negative differential input switch SW32 and the first of the first pair of differential input switches according to the switching control signal. The second positive differential input of the two pairs of differential input switches is turned on, and the SW41 is turned on to cause the positive input terminal of the amplification module 4〇 and the second sensing voltage of the receiving pin S2 and the negative input terminal of the amplification module 40. The first sensing voltage of the pin S3 is received. At this time, the second sensing voltage of the pin S2 and the third sensing voltage of the pin S3 belong to the non-boundary sensing voltage. At the fourth time point, the driving/sensing switches SW12 and SW22 are turned on, and the second sensing voltage of the pin S3 and the fourth sensing voltage of the pin §4 can be output to the switching through the driving/sensing switches SW12 and SW22. Module 3〇2. At this time, the touch sensing device 1 returns to operate in the first differential input mode, and the switching module 302 controls the first positive differential input switch SW31 of the first pair of differential input switches according to the switching control signal. And the second 12 201246040 negative differential input switch SW42 of the second pair of differential input switches is turned on, so that the positive input terminal of the amplification module 4〇 receives the third sensing voltage of the pin S3 and the amplification module 4 The negative input terminal receives the fourth sensing voltage of the pin S4. At this time, the third sensing voltage of the pin S3 and the fourth sensing voltage of the pin S4 belong to the non-boundary sensing voltage. At the fifth time point, the driving/sensing switches SW22 and SW13 are turned on, and the fourth sensing voltage of the pin S4 and the fifth sensing voltage of the pin S5 can be output to the switching module through the driving/sense switches SW22 and SW13. 302. At this time, the touch sensing device 1 will operate in the second differential input mode, and the switching module 302 controls the first negative differential input switch SW32 and the second of the first pair of differential input switches according to the switching control signal. Turning on the second positive differential input switch SW41 of the differential input switch to cause the positive input terminal of the amplification module 4〇+the fourth sensing voltage of the receiving pin S4 and the negative input terminal of the amplification module 4〇-receive The fifth sense voltage of pin %. At this time, the fourth sensing voltage of the pin S4 and the fifth sensing voltage of the pin S5 belong to the non-boundary sensing voltage. At the sixth time point, the driving/sensing switches SW13 and SW23 are turned on, and the fifth sensing voltage of the pin S5 and the sixth sensing voltage of the pin S6 can be output to the switching module through the driving/sensing switches SW13 and SW23. 302. At this time, the touch sensing device 1 returns to operate in the first differential input mode, and the switching module 302 controls the first positive differential input switch SW31 of the first pair of differential input switches according to the switching control signal. And the second negative differential input switch SW42 of the second pair of differential input switches is turned on, so that the positive input terminal of the amplification module 4〇 receives the fifth sensing voltage of the pin S5 and the negative input of the amplification module 4〇 Terminal - Receives the sixth sense voltage of pin S6. At this time, the fifth sensing voltage of the pin S5 and the sixth sensing voltage of the pin S6 belong to the non-boundary sensing voltage. Finally, at the seventh time point, since the sixth sensing voltage input from the pin S6 belongs to the boundary sensing voltage, the touch sensing device will operate in the second single-ended input mode of 201246040, driving / The sensing switches SW13 and SW23 are turned on. In the second single-ended input mode, the switching module 302 will control the negative single-ended input switch SW52 to be turned on according to the switching control signal, so that the positive input terminal of the amplification module 40 receives the sixth sensing voltage of the pin S6. The negative input terminal of the amplification module 40 is coupled to the reference voltage Vt. At this time, the sixth sensing voltage of the last input pin S6 belongs to the boundary sensing voltage. Regardless of which of the above input modes, when the positive input terminal + and the negative input terminal of the amplification module 4 are respectively received with the respective sensing voltages or reference voltages, the amplification control transmitted according to the logic control module 10 will be performed. The signal is subtracted and amplified from the positive sensing input + and the two sensing voltages or reference voltages received by the negative input terminal, and then an amplified analog data is output to the storage control module 5〇. As shown in FIG. 2, the storage control module 5A includes a first switch SW61, a second switch SW62, a third switch SW63, and a storage capacitor c. The first switch SW62_ is connected between the output end of the amplification module 4A and the analog/digital conversion module 60; one end of the first switch SW61 is coupled to the second switch SW62 and the analog/digital conversion_6GUl is further One end of the third switch SW63 is coupled between the second switch SW62 and the analog/digital conversion module 6〇 and is connected to the storage capacitor c; the storage capacitor c is lightly connected to the ground. When the memory control module % is transferred according to the logic control fiber _ 1〇, the stored analog control (four) two switch SW62 and the third switch let 3 open, the amplified analog output data of the output terminal of the amplification module 40 can be Through, the second switch SW62 and the third switch s· are transmitted to the storage capacitor c, and then after the storage control group 50 controls the third switch SW63 to be closed according to the _ memory control, the storage capacitor c can store the amplified analog data. . Before the amplified analog data is output and stored to the storage capacitor C, the logic control module 10 transmits the ground control residual storage control surface group 5G, so that the 201246040 存在 存在 存在 广 广 广 广 广 广 广 广 广 广 广 峨 峨 峨 峨 峨 峨 峨 峨 峨 峨 峨 峨 峨 峨 峨 峨 峨 峨 峨=图=:;;7. (4), Mo group 60 is coupled to the storage control module 5〇 and logical arbitrary ':=, == group _ is the control of the hair = control device through the logic (four) blue green control control to make the multiplexer The switching module control and the #batch-in switch and the pair of single-ended input switches are turned on or off, and can be arbitrarily switched between the differential input mode and the single-ended input. In general, the touch sensing device receives the sensing sensor pin detected by the boundary sensing pin of the non-conductive phase display, and the group will activate the differential input mode. The sensing device receives the sensing voltage sensed by the boundary sensing pin of the conductive thin film display. The switching module will initiate the single-ended input mode. Therefore, the touch sensing device (4) of the present invention can not only improve the accuracy of the sensing, but also maintain good anti-noise capability, and save the realization of the above-mentioned Wei. The required memory space. The features and spirit of the present invention are intended to be more apparent from the detailed description of the preferred embodiments. On the contrary, the intention is to cover various modifications and equivalents within the scope of the patent scope of the invention.
S 15 201246040 【圖式簡單說明】 圖1係繪示本發明之觸控感測裴置對導電薄膜感應器進 行觸控點感測之示意圖。 圖2係繪示本發明之觸控感測裝置之實施例示意圖。 【主要元件符號說明】 1 :觸控感測裝置 20 :接腳 100 :導電薄膜感應器 50 :儲存控制模組 60 :類比/數位轉換模組 300 :驅動/感測控制模組 302 :切換模組 SW11 〜SW13、SW21 〜SW23 SW31 :第一正差動輸入開關 SW41 :第二正差動輸入開關 SW51 :正單端輸入開關 SW61 :接地開關 SW63 :第三開關 +:放大模組之正輸入端 C :儲存電容 :邏輯控制模組 3〇 :多工器 4〇 :放大模組 S1〜S6 :接腳 :感測線 90 :驅動線 SW14、SW24 :接地開關 驅動/感測開關 SW32:第一負差動輸入開關 SW42:第二負差動輸入開關 SW52:負單端輸入開關 SW62 :第二開關 Vt :參考電壓 —:放大模組之負輸入端S 15 201246040 BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic diagram showing the touch sensing of a conductive film sensor by the touch sensing device of the present invention. 2 is a schematic view showing an embodiment of a touch sensing device of the present invention. [Main component symbol description] 1 : Touch sensing device 20 : Pin 100 : Conductive film sensor 50 : Storage control module 60 : Analog / digital conversion module 300 : Drive / sense control module 302 : Switch mode Group SW11 ~ SW13, SW21 ~ SW23 SW31: First positive differential input switch SW41: Second positive differential input switch SW51: Positive single-ended input switch SW61: Grounding switch SW63: Third switch +: Positive input of the amplification module Terminal C: Storage Capacitor: Logic Control Module 3〇: Multiplexer 4〇: Amplifier Module S1~S6: Pin: Sensing Line 90: Drive Line SW14, SW24: Ground Switch Drive/Sensor Switch SW32: First Negative differential input switch SW42: second negative differential input switch SW52: negative single-ended input switch SW62: second switch Vt: reference voltage -: negative input terminal of the amplification module