TW201015410A

TW201015410A - Touched display apparatus, touched display panel and driving method of touched display panel

Info

Publication number: TW201015410A
Application number: TW97139040A
Authority: TW
Inventors: Chi-Hung Yeh; Chun-Hsi Chen; Yu-Lung Wang
Original assignee: Chi Mei Optoelectronics Corp
Priority date: 2008-10-09
Filing date: 2008-10-09
Publication date: 2010-04-16

Abstract

A touched display panel includes a power supplying unit, a touch-sensing unit and a sensing reader unit. The touch-sensing unit has a reader switch and a sensing capacitance, One end of the sensing capacitance is electrically connected with the reader switch. The other end of the sensing capacitance is electrically connected with the power supplying unit. The sensing reader unit electrically connected with the reader switch outputs a sensing-output signal. When the touched display panel is distorted due to the external force, a variation value of the sensing capacitance is produced. The sensing reader unit outputs the sensing-output signal according to the variation value.

Description

201015410 九、發明說明：【發明所屬之技術領域】本發明關於一種觸控式顯示裝置、觸控式顯示面板及觸控式顯示面板的驅動方法。【先前技術】[Technical Field] The present invention relates to a touch display device, a touch display panel, and a touch display panel driving method. [Prior Art]

隨著科技不斷的進步，使得各種資訊設備不斷地推陳出新。其中，以資料輸入設備而言，由於現今之資料處理量曰益增加，若僅藉由鍵盤或滑鼠輸入資料，並以螢幕輸出資料，則顯得過於緩慢。人除了具有視覺及聽覺之外，尚具有觸覺，而隨著感測器技術不斷的更新突破，使得感觸式感測器成了人與資訊設備溝通的另一選擇。另一方面，傳統的電腦輸入介面（例如鍵盤或滑鼠）對於不熟悉電腦者來說，於操作上存在一定的困難度，而造成電腦普及化的障礙之-。為了能夠更直覺式的操作資能選項。訊設備，近來業者積極地發展觸控式面板（t〇uchpanel)。觸控式面板具有人性化的輸入介面特性，使得任何年齡層的使用者可直接以手指或觸控筆，選取觸控式面板上的^ 習知的一種觸控式面板，是於例如為顯示面板的外增加一層觸控薄膜（〇uter film )，以感測觸礙值置4 而此種作法將會增加材料成本及整體厚度，。丨亮度。會降低面: 201015410 近來，業者發展出一種内建式（In cell)的觸控式顯示面板，其係利用薄膜電晶體製程製作於面板内的光電晶體（photonic transistor)來感測面板受觸碰的位置，其原理是當光電晶體在受光照射及無受光照射的情況下，會產生不同的訊號，因此後端的控制單元可以得知使用者觸碰的位置^ 然而，當觸控式顯示面板放置於一外部光源閃爍或是外部光源微弱的環境中，則易造成觸控式顯示面板產生誤 ® 動作，且習知内建式觸控式顯示面板的構造係使用光電晶體進行感測，進而造成成本增加。因此，如何提供一種觸控式顯示裝置、觸控式顯示面板及觸控式顯示面板的驅動方法，能降低成本，且不受外界光線干擾而產生誤動作，實屬當前重要課題之一。【發明内容】有鑑於上述課題，本發明之目的為提供一種能降低成本，且不受外界光線干擾而產生誤動作之觸控式顯示裝置、觸控式顯示面板及觸控式顯示面板的驅動方法。為達上述目的，依本發明之一種觸控式顯示面板包含，一電源供應單元、一觸控感應單元及一感應讀取單元。觸控感應單元具有一讀取開關及一感應電容，感應電容的一端電性連接於讀取開關，感應電容的另一端電性連接於電源供應單元。感應讀取單元與讀取開關電性連接，並輸出一感應輸出值。其中，觸控式顯示面板因外力產生形變， 6 201015410 俾使感應電容的電容值產生一變化量，感應讀取單元依據變化量以輸出感應輸出值。為達上述目的，依本發明之一種觸控式顯示面板包含一第一掃描線、一第一資料線、一第一讀取線、一電源供應單元、至少一晝素以及一感應讀取單元。晝素包含一晝素開關、一晝素電容、一讀取開關及一感應電容。晝素開關係與第一掃描線及第一資料線電性連接。晝素電容係與晝素開關電性連接。讀取開關係與第一掃描線及第一讀取 ® 線電性連接。感應電容係與電源供應單元及讀取開關電性連接。感應讀取單元與讀取開關電性連接，並輸出一感應輸出值。其中，觸控式顯示面板因外力產生形變，俾使感應電容的電容值產生一變化量，而感應電容依據變化量輸出感應輸出值。為達上述目的，依本發明之一種觸控式顯示裝置具有一觸控式顯示面板，其中觸控式顯示面板包含一電源供應 _ 單元、一觸控感應單元及一感應讀取單元。觸控感應單元具有一讀取開關及一感應電容，感應電容的一端電性連接於讀取開關，感應電容的另一端電性連接於電源供應單元。感應讀取單元與讀取開關電性連接，並輸出一感應輸出值。其中，觸控式顯示面板因外力產生形變，俾使感應電容的電容值產生一變化量，感應讀取單元依據變化量以輸出感應輸出值。為達上述目的，依本發明之一種觸控式顯示面板之驅動方法，其中觸控式顯示面板具有一電源供應單元、一觸 7 201015410 控感應單元及一感應讀取單元，觸控感應單元具有一讀取開關及一感應電容，感應電容的一端電性連接於讀取開關感應電谷的另一知電性連接於電源供應單元。驅動方法係包含下列步驟：使觸控式顯示面板產生形變，俾使感應電容的電容值產生一變化量；以及由感應讀取單元依據變化量以輸出一感應輸出值。承上所述’依本發明之觸控式顯示裝置、觸控式顯示 ❹ 面板及觸控式顯示面板的驅動方法，係藉由電源供應單元對感應電谷的一端提供一穩定電壓，當觸控式顯示面板產生形變，而改變感應電容的電容值時，感應輸出值會產生變化，進而可由後級的處理單元判別觸控式顯示面板是否觉到觸碰以及得知觸碰位置。如此一來，觸控式顯示面板將不受外界光線干擾而產生誤動作。另外，觸控感應單元僅利用一個讀取開關及一個感應電容即可達成觸控功能，如此一來，將可簡化觸控式顯示面板的構造，進而節省成本。【實施方式】以下將參照相關圖式，說明依本發明較佳實施例之觸控式顯示裝置、觸控式顯示面板及觸控式顯示面板的驅動方法。明同時參照圖1及圖2 ,本發明較佳實施例之一觸控式顯示面板1係包含複數個畫素U、一資料控制迴路12、知描控制迴路13、一觸碰控制迴路14、一電源供應單 8 201015410 元15以及-基板16。該等畫素係以陣列排列方式於基板！6上’且各畫素n係包含一畫素單元⑴及控感應單元112，其甲觸控感應單元112鄰設於金素二。金麵制迴路12係藉由複數資料線&〜心與相：應之畫素11電性連接，而掃描控制迴路13係藉由複數掃描線Sn〜Sn】與相對應之畫f n電性連接。本實施例中掃觸控式顯示面板1仙—内建式_控式顯示面板為例。 ❹ 參觸碰控制迴路14包含複數感應讀取單元141及一位置判斷單元142。位置判斷單元142係與感應讀取單元⑷ =生連接，喊應讀取單元⑷铺由複㈣與相對應之畫素U電性連接。 m 及一圖2所示’畫素單元U1具有—畫素開關Tn -斜“等效電容CU。畫素開關Τ"係與第-掃描線S"、去望"及畫素等效電容Cl]電性連接。於實施上，晝二儲係包含相互電性連接之-液晶電… c感應^單幻12具有—讀取開WT12及—感應電容電電令Cl2的一端電性連接於讀取開關T12，感應例I ^的另—端電性連接於電源供應單元15。於本實施容c的早％ 15提供一穩定的電位Vbia』感應電不加^限制:端’其中電位如為共同電壓，在此並請= 續參照圖2所示’感應讀取單幻Μ係經由讀取線1與觀開…電性連接。於實施上，感應讀取單元 201015410 141係可為一積分器。此外，感應讀取單元141係可設置於基板16上或一積體電路内，於本實施例中，係以感應讀取單元141整合至觸碰控制迴路14為例說明。於本實施例中，感應讀取單元141係包含一運算放大器OP、一運算電容Cfb及一開關L。運算放大器OP具有一正輸入端、一負輸入端及一輸出端。運算電容Cfb電性連接於運算放大器OP之負輸入端及輸出端之間，而開關 L係與運算電容Cfb並聯。另外，開關L例如為一薄膜電晶體，在此並不加以限定開關L的種類。承上所述，請再參照圖2、圖3A及圖3B，本發明較佳實施例之觸控式顯示面板的驅動方法係包含步驟W11 至步驟W14。步驟W11係重置感應讀取單元141之運算電容Cfb之電荷量。於本實施例中，由於運算電容Cfb會儲存前一次掃描所輸出的電荷，因此於一第一時距A!中，開關L係經由一切換訊號線SL所傳送的切換訊號將其控制為導通狀態，以使運算電容Cfb進行放電來重置運算電容Cfb的狀態。其中感應讀取單元141之運算放大器OP之正輪入端係接收一參考訊號Vref，而負輸入端與讀取開關T12電性連接，值得一提的是，負輸入端的電位VA與參考訊號Vref 的值相等。步驟W12係導通讀取開關T12。於本實施例中，係於一第二時距Α2中，利用掃描線S„所傳送的訊號導通讀取開關T12，當讀取開關T12導通時，負輸入端的電位VA與 201015410 感應電容c12靠近讀取開關Ti2之—端的電位％相等，又, 電位VB大於電位Vbias，俾使電位vB對感應電容Ci2充電，所㈣應電容（:12具有—第—f荷量qg1h 如下式所示： Vcl 机-D，其中Ci為感應電容C12之電容值。如圖2所示，當使用者未觸碰觸控式顯示面板1時，感應讀取單元141依據電位VA及參考訊號Vref以輸出一感應輸出值Voi。步驟W13係使觸控式顯示面板i產生形變，俾使感應電容Cn的電容值產生一變化量。在本實施例中，於讀取開關U導通時間中，藉由一外力使觸控式顯示面板i f生形變’在此’所謂的外力作用，是指施力改變感應電谷Cu於結構上的間隙距離以改變電容值，俾使感應電容 c12的電容值q產生一第一變化量（圖未顯示），第一變化量係感應電容C〗2於結構上的間隙由大變小造成，因此感〇應電容Cl2的電容值變為電容值c2，其中電容值（：2大於電容值Ci。步驟W14係由感應讀取單元141依據變化量以輸出一感應輸出值V〇2。在本實施例中，感應電容&於結構上的間隙距離變小，將使感應電容Ci2的電容值^產生第一變化量，造成感應電容c12的電容值Ci轉變為電容值c2，另外，由於感應電容〇^2儲存的第一電荷量Qci不會改變， :以電位vB會下降，亦同時影響電位Va，又，感應讀取單兀141為一負回授電路，使負輸入端的電位VA與參考 201015410 訊號vref的值相等，因此，感應電容clz之第一電荷量Qd 會變為一第二電荷量Qc2。第二電荷量Qc2如下式所示： Qc2=c2(vb^kj 在此需特別說明的是，第一電荷量Qc i與第二電荷量 Qc2之間具有一差值AQ丨。差值AQl如下式所示： △0丨备c,Xn) ' 此差值△ Q1係感應輸出值V⑴為了將電位V a維持於參考訊號Vref而輸出的電荷量，同時感應輸出值ν〇ι亦對運算電容Cfh奋.雷，w你潘質愈令rv审ϋ上„ β —With the continuous advancement of technology, various information devices are constantly being introduced. Among them, in the case of data input devices, as the current data processing volume has increased, it is too slow to input data by keyboard or mouse and output data by screen. In addition to being visual and audible, people still have a sense of touch, and with the continuous update of sensor technology, the sensor is an alternative to communication between people and information devices. On the other hand, traditional computer input interfaces (such as keyboards or mice) have some difficulties in operation for those who are not familiar with the computer, and cause obstacles to the popularization of computers. In order to be able to operate more intuitively. Recently, operators have actively developed touch panels (t〇uchpanel). The touch panel has a user-friendly input interface feature, so that a user of any age can directly select a touch panel on the touch panel by using a finger or a stylus, for example, for display. A layer of touch film (〇uter film) is added to the outside of the panel to sense the value of the barrier to 4, which will increase the material cost and overall thickness.丨 Brightness. Will reduce the surface: 201015410 Recently, the industry has developed a built-in (In cell) touch-sensitive display panel, which uses a photonic transistor fabricated in a panel to process the panel touched by a thin-film transistor process. The position is that when the photoelectric crystal is irradiated with light and is not exposed to light, different signals are generated, so that the control unit at the rear end can know the position touched by the user. However, when the touch display panel is placed In an environment where the external light source is flickering or the external light source is weak, the touch display panel is likely to cause an erroneous action, and the structure of the conventional built-in touch display panel is sensed by using a photoelectric crystal, thereby causing Increased costs. Therefore, how to provide a touch control display device, a touch display panel, and a touch display panel driving method can reduce the cost and cause malfunction due to external light interference, which is one of the current important topics. SUMMARY OF THE INVENTION In view of the above problems, an object of the present invention is to provide a touch display device, a touch display panel, and a touch display panel driving method capable of reducing cost and being prevented from being disturbed by external light. . To achieve the above objective, a touch display panel according to the present invention comprises: a power supply unit, a touch sensing unit and a sensing reading unit. The touch sensing unit has a read switch and a sensing capacitor. One end of the sensing capacitor is electrically connected to the read switch, and the other end of the sensing capacitor is electrically connected to the power supply unit. The inductive reading unit is electrically connected to the read switch and outputs an inductive output value. Among them, the touch display panel is deformed by an external force, 6 201015410 产生 causes a capacitance change of the capacitance of the sensing capacitor, and the sensing reading unit outputs the sensing output value according to the amount of change. In order to achieve the above objective, a touch display panel according to the present invention includes a first scan line, a first data line, a first read line, a power supply unit, at least one pixel, and an inductive reading unit. . The halogen element comprises a halogen switch, a halogen capacitor, a read switch and a sensing capacitor. The 昼开 open relationship is electrically connected to the first scan line and the first data line. The halogen capacitor is electrically connected to the halogen switch. The read open relationship is electrically connected to the first scan line and the first read ® line. The sensing capacitor is electrically connected to the power supply unit and the read switch. The inductive reading unit is electrically connected to the read switch and outputs an inductive output value. The touch display panel is deformed by an external force, so that the capacitance value of the inductive capacitor generates a change amount, and the sensing capacitor outputs the induced output value according to the change amount. In order to achieve the above object, a touch display device according to the present invention has a touch display panel, wherein the touch display panel comprises a power supply unit, a touch sensing unit and an inductive reading unit. The touch sensing unit has a read switch and a sensing capacitor. One end of the sensing capacitor is electrically connected to the read switch, and the other end of the sensing capacitor is electrically connected to the power supply unit. The inductive reading unit is electrically connected to the read switch and outputs an inductive output value. The touch display panel is deformed by an external force, so that the capacitance value of the sensing capacitor generates a change amount, and the sensing reading unit outputs the sensing output value according to the amount of change. In order to achieve the above object, a touch display panel driving method has a power supply unit, a touch 7 201015410 control sensing unit and a sensing reading unit, and the touch sensing unit has A read switch and an inductive capacitor are electrically connected to one end of the inductive capacitor and electrically coupled to the power supply unit. The driving method comprises the steps of: deforming the touch display panel to generate a change amount of the capacitance value of the inductive capacitor; and outputting an inductive output value according to the amount of change by the inductive reading unit. According to the above-mentioned driving method of the touch display device, the touch display panel and the touch display panel, the power supply unit supplies a stable voltage to one end of the induction valley, when The control display panel is deformed, and when the capacitance value of the sensing capacitor is changed, the sensing output value changes, and the processing unit of the subsequent stage can determine whether the touch display panel senses the touch and the touch position. As a result, the touch display panel will be protected from external light and cause malfunction. In addition, the touch sensing unit can realize the touch function by using only one read switch and one sensing capacitor, thereby simplifying the structure of the touch display panel and saving cost. [Embodiment] Hereinafter, a driving method of a touch-control display device, a touch display panel, and a touch display panel according to a preferred embodiment of the present invention will be described with reference to the related drawings. Referring to FIG. 1 and FIG. 2, a touch display panel 1 according to a preferred embodiment of the present invention includes a plurality of pixels U, a data control loop 12, a description control loop 13, and a touch control loop 14. A power supply unit 8 201015410 yuan 15 and - substrate 16. These pixels are arranged in an array on the substrate! Each of the pixels n includes a pixel unit (1) and a control sensing unit 112, and the touch sensing unit 112 is adjacent to the gold element. The gold surface circuit 12 is electrically connected by a plurality of data lines & the heart and the phase: the pixel 11 is electrically connected, and the scanning control circuit 13 is connected to the corresponding scanning line Sn to Sn. connection. In this embodiment, the touch-sensitive display panel 1 is a built-in type control panel. The touch control loop 14 includes a complex sense read unit 141 and a bit position determination unit 142. The position determining unit 142 is connected to the sensing reading unit (4), and the calling unit (4) is electrically connected to the corresponding pixel U by the complex (4). m and a picture pixel unit U1 shown in Fig. 2 - pixel switch Tn - oblique "equivalent capacitance CU. pixel switch Τ" and the first - scan line S ", look around " and pixel equivalent capacitance Cl] Electrical connection. In practice, the second storage system consists of electrically connected to each other - liquid crystal... c induction ^ single magic 12 has - read open WT12 and - sense capacitance electric power so that one end of Cl2 is electrically connected to read Taking the switch T12, the other end of the sensing example I ^ is electrically connected to the power supply unit 15. The early % 15 of the present embodiment c provides a stable potential Vbia "induction power is not limited: the end" where the potential is Common voltage, here and please = Continued with reference to Figure 2, the 'inductive reading single illusion system is electrically connected via the reading line 1 to the viewing. In practice, the sensing reading unit 201015410 141 can be an integral. In addition, the inductive reading unit 141 can be disposed on the substrate 16 or in an integrated circuit. In the embodiment, the inductive reading unit 141 is integrated into the touch control circuit 14 as an example. In the example, the sensing read unit 141 includes an operational amplifier OP, an operational capacitor Cfb, and a The operational amplifier OP has a positive input terminal, a negative input terminal and an output terminal. The operational capacitor Cfb is electrically connected between the negative input terminal and the output terminal of the operational amplifier OP, and the switch L is connected in parallel with the operational capacitor Cfb. In addition, the switch L is, for example, a thin film transistor, and the type of the switch L is not limited herein. Referring to the above, please refer to FIG. 2, FIG. 3A and FIG. 3B, the touch control of the preferred embodiment of the present invention. The driving method of the display panel includes steps W11 to W14. Step W11 resets the charge amount of the operation capacitor Cfb of the sensing read unit 141. In the embodiment, the operation capacitor Cfb stores the charge outputted by the previous scan. Therefore, in a first time interval A!, the switch L is controlled to be in a conducting state via a switching signal transmitted by a switching signal line SL, so that the operational capacitor Cfb is discharged to reset the state of the operational capacitor Cfb. The positive input terminal of the operational amplifier OP of the inductive reading unit 141 receives a reference signal Vref, and the negative input terminal is electrically connected with the read switch T12. It is worth mentioning that the potential VA and the reference of the negative input terminal are The value of the signal Vref is equal. Step W12 turns on the read switch T12. In this embodiment, in a second time interval Α2, the signal transmitted by the scan line S„ turns on the read switch T12 when the switch is read. When T12 is turned on, the potential VA of the negative input terminal is equal to the potential % of the terminal of the 201015410 sensing capacitor c12 near the read switch Ti2, and the potential VB is greater than the potential Vbias, so that the potential vB charges the sensing capacitor Ci2, and (4) the capacitor (: 12 has a -f load qg1h as follows: Vcl machine-D, where Ci is the capacitance value of the sense capacitor C12. As shown in FIG. 2, when the user does not touch the touch display panel 1, the inductive reading unit 141 outputs an inductive output value Voi according to the potential VA and the reference signal Vref. Step W13 causes the touch display panel i to be deformed to cause a change in the capacitance value of the sensing capacitor Cn. In the present embodiment, during the on-time of the read switch U, the external display of the touch display panel as by the external force is performed by the external force, which means that the force is changed to change the structure of the induction valley Cu. The gap distance is changed to change the capacitance value, so that the capacitance value q of the sensing capacitor c12 generates a first variation amount (not shown), and the first variation amount is caused by the large and small gap of the sensing capacitor C The capacitance value of the capacitor C1 is changed to a capacitance value c2, wherein the capacitance value (: 2 is greater than the capacitance value Ci. Step W14 is outputted by the sensing reading unit 141 according to the amount of change to output an inductive output value V〇2. In this embodiment In the example, the gap between the sensing capacitor & the structure becomes smaller, and the capacitance value of the sensing capacitor Ci2 is generated by the first variation, so that the capacitance value Ci of the sensing capacitor c12 is converted into the capacitance value c2, and, in addition, due to the sensing capacitance The first charge amount Qci stored in 〇^2 will not change, : the potential vB will decrease, and also affect the potential Va. In addition, the induction read unit 141 is a negative feedback circuit, so that the potential VA of the negative input terminal and the reference 201015410 Signal vref Therefore, the first charge amount Qd of the sense capacitor clz becomes a second charge amount Qc2. The second charge amount Qc2 is as follows: Qc2=c2 (vb^kj) There is a difference AQ丨 between the charge amount Qc i and the second charge amount Qc2. The difference AQl is as follows: △0丨c, Xn) ' This difference ΔQ1 is the induced output value V(1) in order to set the potential V a maintains the amount of charge outputted by the reference signal Vref, and the induced output value ν〇ι also works on the operational capacitor Cfh. Ray, the more you make the rv review „ β -

所以感應輸出值ν01會變為感應輸出值ν〇2，其中感應輸出值V〇2為感應輸出值V〇i與電壓差的和（如 3Β所示）。 ⑩ 請同時參考圖1及圖2,位置判斷單元142係依據感應讀取單元141輸出之感應輸出值ν〇2及掃描線s"之時序訊號’判斷何處之畫素U被觸碰。 _時參照圖2、圖4A及圖4B，本發明較佳實施例之觸控式顯不面板的另一種驅動方法係包含步驟物步驟W24。Therefore, the induced output value ν01 will become the induced output value ν〇2, where the inductive output value V〇2 is the sum of the induced output value V〇i and the voltage difference (as shown in 3Β). 10, and referring to FIG. 1 and FIG. 2, the position determining unit 142 determines which pixel U is touched according to the sensing output value ν〇2 outputted by the sensing unit 141 and the timing signal of the scanning line s". Referring to FIG. 2, FIG. 4A and FIG. 4B, another driving method of the touch display panel of the preferred embodiment of the present invention includes a step step W24.

’俾使感應 ^係藉由 —外力使觸控式顯示面板丨產生形變，</ 俾感应感应感应 — — — — — — — — — — — — — — — — —

而使得感應電容C 12 201015410 的電容值產生第一變化量。步驟W22係於一第一時距、中，重置感應讀取單元 141之一運算電各Cfb之電荷量，以將運算電容Cfb中之電荷排除。步驟W23係導通讀取開關Τΐ2 ^於本實施例中，係利用掃描線sn所傳送的訊號導通讀取開關Τΐ2。於本實施例中，於s賣取開關Τη導通時間（即第二時距α2)中，施於觸控式顯示面板1的外力消失，也就是說感應電容C12於結構上的間隙距離再次改變，將使感應電容^的電容值 ^產生一第二變化量（圖未顯示），第二變化量係感應電容clz於結構上的間隙由小變大造成，因此感應電容的電合值（^丨轉變為電容值&，其中電容值q小於電容值 4W24係由感應讀取單元141依據變化量以輸出感應輸出值V〇3。在本實施例中，感應電容C12於結構_ 的間，距離變大’使得感應電容c 12的電容值c】產生第：變化置’造成感應電容Cl2的電容值&變為電容值）外，由於感應電容Cl2之第—電荷量〜不會改變心電:立會上升’亦同時影響電位Va，又，感應讀取單夭 Γ會U T電路’因此，感應電容c〗2之第一電荷量 QC】會變為-第三電荷量Qc3。第三電荷量Qc3如The capacitance value of the sensing capacitor C 12 201015410 is caused to generate a first variation. Step W22 is to reset the charge amount of each of the Cfbs of one of the sensing read units 141 at a first time interval, to exclude the charge in the operation capacitor Cfb. In step W23, the read switch Τΐ2 is turned on. In the present embodiment, the read signal switch Τΐ2 is turned on by the signal transmitted by the scan line sn. In this embodiment, in the s selling switch Τn conduction time (ie, the second time interval α2), the external force applied to the touch display panel 1 disappears, that is, the gap distance of the sensing capacitor C12 in the structure changes again. The capacitance value of the sensing capacitor ^ will be generated by a second variation (not shown), and the second variation is caused by the small difference between the inductance and the capacitance of the sensing capacitor clz, so the electrical capacitance of the sensing capacitor (^感应 is converted to a capacitance value &, wherein the capacitance value q is smaller than the capacitance value 4W24 by the sensing reading unit 141 according to the amount of change to output the sensing output value V 〇 3. In the embodiment, the sensing capacitor C12 is between the structures _ The distance becomes larger, so that the capacitance value c of the sensing capacitor c 12 is generated: the change is set to cause the capacitance value of the sensing capacitor Cl2 to become a capacitance value, and the first charge amount of the sensing capacitor Cl2 does not change the heart. Electricity: the rise of the rise will also affect the potential Va. In addition, the inductive read unit will be the UT circuit. Therefore, the first charge amount QC of the sense capacitor c is changed to the third charge amount Qc3. The third charge amount Qc3 is as

Hk) 在此需特別說明的是，第一電荷量〜與第三電荷量 Qg之間具有一差值么(?2。差值如下式所示 13 201015410Hk) It should be specially noted here that there is a difference between the first charge amount ~ and the third charge amount Qg (?2. The difference is as shown in the following figure 13 201015410

AQ2=(c、-cJvB-vbJ 此差值△ Q2係感應輸出值v〇1為3將電位VA維持於參考訊號Vref而自電位Va接收的電荷量，同時感應輸出值V01亦對運算電容Cft放電，以使運算電容^累積相同的電荷量，導致運算電容Cfb具有一電壓差Δν2。電壓差如下式所示： 2AQ2=(c, -cJvB-vbJ The difference Δ Q2 is the induced output value v〇1 is 3, the potential VA is maintained at the reference signal Vref and the amount of charge received from the potential Va, and the induced output value V01 is also calculated for the operating capacitor Cft Discharge, so that the operation capacitor ^ accumulates the same amount of charge, resulting in the operation capacitor Cfb having a voltage difference Δν2. The voltage difference is as follows: 2

❹ 所以感應輸出值ν01會變為感應輸出值ν⑺，其中感應輸出值V〇3為感應輸出值ν〇ι與電壓差的差值（如圖4Β所示）。請同時參考圖1及圖2，位置判斷單元142係依據感應讀取單元141輸出之感應輸出值ν〇3及掃描線s"之時序訊號，判斷何處之畫素U被觸碰。综上所述，由於使用者觸碰觸控式顯示面板卜使觸 ® 控式顯示面板1產生形變，使得感應電容Cl2的電容值连生變化，並同時造成電位VA與電位VB的值有所變動，感應輸出值ν〇4使電位vA及電位Vb維持一定值而對運 2電容Cfb充電或放電，進而使感應讀取單元141輸㈣應輸出值、或感應輸出值Vg3，藉由感應輸出值的變化以判斷何處之晝素11被觸碰。本發明較佳實施例之-種觸控式顯*裝置具有一觸二气.·、員示面；^纟中觸控式顯示面板包含—電源供應單疋、—觸控感應單元及-感應讀取單元。觸控感應單元具 201015410 有一讀取開關及一感應電容，感應電容的一端電性連接於讀取開關，感應電容的另一端電性連接於電源供應單元。感應讀取單元與讀取開關電性連接，並輸出一感應輸出值。其中，當觸控式顯示面板產生形變，將使得感應電容的電容值產生一變化量，而感應讀取單元則依據變化量以輸出感應輸出值。由於觸控式顯示面板已詳述於上，故不再贅述。綜上所述，依本發明之觸控式顯示裝置、觸控式顯示 ® 面板及觸控式顯示面板的驅動方法，係藉由電源供應單元對感應電容的一端提供穩定的電壓，當觸控式顯示面板產生形變，而改變感應電容的電容值時，感應輸出值會產生變化，進而可由後級的處理單元判別觸控式顯示面板是否受到觸碰以及得知觸碰位置，如此一來，觸控式顯示面板將不受外界光線干擾而產生誤動作。另外，觸控感應單元僅利用一個讀取開關及一個感應電容即可達成觸控功能，如此一來，將可簡化觸控式顯示面板的構造，進而節省成本。以上所述僅為舉例性，而非為限制性者。任何未脫離本發明之精神與範疇，而對其進行之等效修改或變更，均應包含於後附之申請專利範圍中。【圖式簡單說明】圖1為顯示本發明較佳實施例之觸控式顯示面板之一不意圖， 15 201015410 圖2為顯示本發明較佳實施例之畫素之一示意圖；圖3A為顯示本發明較佳實施例之觸控式顯示面板之驅動方法之一示意圖；圖3B為圖3A之觸控式顯示面板之時序控制之一示意圖；圖4A為顯示本發明較佳實施例之觸控式顯示面板之另一種驅動方法之一示意圖；以及圖4B為圖4A之觸控式顯示面板之時序控制之一示意❹ So the sense output value ν01 will change to the sense output value ν(7), where the sense output value V〇3 is the difference between the sense output value ν〇ι and the voltage difference (as shown in Figure 4Β). Referring to FIG. 1 and FIG. 2 simultaneously, the position determining unit 142 determines which pixel U is touched according to the sensing output value ν〇3 outputted by the sensing unit 141 and the timing signal of the scanning line s". In summary, since the user touches the touch display panel to cause the touch panel to be deformed, the capacitance value of the sensing capacitor Cl2 changes continuously, and at the same time, the values of the potential VA and the potential VB are caused. The induced output value ν〇4 maintains the potential vA and the potential Vb at a constant value to charge or discharge the capacitor Cfb, and further causes the inductive reading unit 141 to output (4) the output value or the inductive output value Vg3, by the sensing output. The value changes to determine where the element 11 is touched. The touch-sensitive display device of the preferred embodiment of the present invention has a touch-and-touch device and a display surface; the touch-sensitive display panel includes a power supply unit, a touch sensor unit, and a sensor. Read unit. The touch sensing unit 201015410 has a read switch and a sensing capacitor. One end of the sensing capacitor is electrically connected to the read switch, and the other end of the sensing capacitor is electrically connected to the power supply unit. The inductive reading unit is electrically connected to the read switch and outputs an inductive output value. Wherein, when the touch display panel is deformed, the capacitance value of the sensing capacitor is generated by a variation, and the sensing reading unit outputs the sensing output value according to the amount of change. Since the touch display panel has been described in detail above, it will not be described again. In summary, the driving method of the touch display device, the touch display panel, and the touch display panel according to the present invention provides a stable voltage to one end of the sensing capacitor by the power supply unit. The display panel is deformed, and when the capacitance value of the sensing capacitor is changed, the sensing output value changes, and the processing unit of the subsequent stage can determine whether the touch display panel is touched and the touch position is known, so that The touch display panel will be protected from external light and cause malfunction. In addition, the touch sensing unit can realize the touch function by using only one read switch and one sensing capacitor, thereby simplifying the structure of the touch display panel and saving cost. The above is intended to be illustrative only and not limiting. Any equivalent modifications or alterations to the spirit and scope of the present invention are intended to be included in the scope of the appended claims. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic view showing a touch display panel according to a preferred embodiment of the present invention. 15 201015410 FIG. 2 is a schematic view showing a pixel of a preferred embodiment of the present invention; FIG. 3A is a view FIG. 3B is a schematic diagram showing the timing control of the touch display panel of FIG. 3A; FIG. 4A is a schematic diagram showing the timing control of the touch display panel of the present invention; A schematic diagram of another driving method of the display panel; and FIG. 4B is a schematic diagram of the timing control of the touch display panel of FIG. 4A

【主要元件符號說明】 1 :觸控式顯示面板 Π :畫素 Π1 :畫素單元 112 :觸控感應單元 12 :資料控制迴路 13 :掃描控制迴路 14 :觸碰控制迴路 141 :感應讀取單元 142 :位置判斷單元 15 電源供應單元 16 基板 Aj 第一時距 A2 第二時距 16 201015410 cn :畫素等效電容 c12:感應電容 Cfb :運算電容 Clc .液晶電容 CST :儲存電容 Dll〜Dml :資料線 L :開關 OP :運算放大器 ® K〜Rm:讀取線[Main component symbol description] 1 : Touch display panel Π : pixel Π 1 : pixel unit 112 : touch sensing unit 12 : data control circuit 13 : scan control circuit 14 : touch control circuit 141 : sensing read unit 142: position judging unit 15 power supply unit 16 substrate Aj first time interval A2 second time interval 16 201015410 cn: pixel equivalent capacitance c12: sensing capacitance Cfb: operation capacitance Clc. liquid crystal capacitance CST: storage capacitance Dll~Dml: Data line L: Switch OP: Operational Amplifier® K~Rm: Read Line

Sll〜Sni·掃描線 - SL :切換訊號線 Tn :畫素開關 Τ12讀取開關Sll~Sni·Scan Line - SL: Switch Signal Line Tn: Picture Switch Τ12 Read Switch

Va、Vb、Vbias :電位 V〇 1、V〇2.、V〇3 :感應輸出值 _ Vref :參考訊號 ❹ W11 〜W14、W21 〜W24 :步驟 17Va, Vb, Vbias: potential V〇 1, V〇2., V〇3: inductive output value _ Vref: reference signal ❹ W11 ~ W14, W21 ~ W24: Step 17

Claims

201015410 十、申請專利範圍： 1、一種觸控式顯示面板，包含：一電源供應單元；觸控感應單元’具有__讀取開關及—感應電容該感應電容的—端電性連接於該讀取開關，該感應電容的另一端電性連接於該電源供應單元；以及一感應讀取單元，與該讀取開關電性連接並輸出一感應輸出值；其中，该觸控式顯示面板因外力產生形變俾使該感應電容的電容值產生一變化量，而該感應讀取單元依據該變化量以輸出該感應輸出值。 2、如申請專利範圍第丨項所述之觸控式顯示面板其中該感應讀取單元係為一積分器。 3、如申請專利範圍第1項所述之觸控式顯示面板其中該感應讀取單元包含： —運算放大器，具有一正輸入端、一負輸入端及一輸出端’其中該負輸入端與該讀取開關電性連接，該正輸入端接收一參考訊號，該運算放大器係依據該變化量以輸出該感應輸出值；運算電容’設置於該運算放大器之該負輸入端及該輸出端之間；以及一開關，與該運算電容並聯，並在作動後重置該運算電容之電荷量。如申請專利範圍第1項所述之觸控式顯示面板，更包 201015410 含：一觸碰控制迴路，係與該讀取開關電性連接，並依據 3亥感應輸出值判斷一觸碰位置。 5、如申請專利範圍第4項所述之觸控式顯示面板，其中該觸碰控制迴路包含：一位置判斷單元，耦接至該感應讀取單元，並依據該感應輸出值判斷該觸碰位置。 ❹6、如申請專利範圍第i項所述之觸控式顯示面板其中 ϋ亥觸控式顯示面板係由一外力而產生形變。 7、一種觸控式顯示裝置，具有一觸控式顯示面板，該觸控式顯示面板包含：一電源供應單元；一觸控感應單元，具有一讀取開關及一感應電容該 f應電容的一端電性連接於該讀取開關，該感應電谷的另一端電性連接於該電源供應單元；以及 ❹ 一感應讀取單元，與該讀取開關電性連接，並輸出一感應輸出值，，中’該觸控式顯示面板因外力產生形變，俾使該感應 2的電容值產生-變化量’該感應讀取單祕據該變化量以輸出該感應輸出值。 8、如申請專利範圍第7項所述之觸控式顯示裝置，其中该感應讀取單元係為一積分器。 9、如申請補第7項所述之職式顯μ置该感應讀取單元包含· 、 201015410 運算放大器，具有一正輸入端、一負輸入端及一輸出端，其中該負輸入端與該讀取開關電性連接，該正輸入端接收一參考訊號，該運算放大器係依據該變化量以輸出該感應輸出值；運算電容’設置於該運算放大器之該負輸入端及該輸出端之間；以及開關，與該運算電容並聯，並在作動後重置該運算 ❹ 電容之電荷量。 1〇、如申請專利範圍第7項所述之觸控式顯示裝置，更包含：觸碰控制迴路，係與該讀取開關電性連接，並依據該感應輸出值判斷一觸碰位置。 11、如申請專利範圍第10項所述之觸控式顯示裝置，其中該觸碰控制迴路包含·· —位置判斷單元，耦接至該感應讀取單元，並依據該 & 感應輸出值判斷該觸碰位置。 12、如申請專利範圍第7項所述之觸控式顯示裝置，其中 «亥觸控式顯示面板係由一外力而產生形變。 13、 -種糖式顯*面板之㈣方法，賴控式顯示面板具有一電源供應單元、一觸控感應單元及一感應讀取單兀’该觸控感應單元具有一讀取開關及—感應電容，該感應電容的一端電性連接於該讀取開關，該感應電容的另一端電性連接於該電源供應單元該驅動方法係包含下列步驟： 20 201015410 使該觸控式顯示面板產生形變，俾使該感應電容的電容值產生一變化量；以及由該感應讀取單元依據該變化量以輸出一感應輸出值。 14、如申睛專利範圍第13項所述之驅動方法，於該觸控式顯示面板產生形變前更包含：導通該讀取開關。201015410 X. Patent application scope: 1. A touch display panel comprising: a power supply unit; a touch sensing unit having a __reading switch and a sensing capacitor - the terminal is electrically connected to the reading Taking a switch, the other end of the sensing capacitor is electrically connected to the power supply unit; and an inductive reading unit electrically connected to the read switch and outputting an inductive output value; wherein the touch display panel is externally driven The deformation 俾 generates a variation of the capacitance value of the sensing capacitor, and the sensing reading unit outputs the sensing output value according to the variation. 2. The touch display panel of claim 2, wherein the inductive reading unit is an integrator. 3. The touch display panel of claim 1, wherein the sensing read unit comprises: an operational amplifier having a positive input terminal, a negative input terminal and an output terminal, wherein the negative input terminal The read switch is electrically connected, the positive input terminal receives a reference signal, and the operational amplifier outputs the induced output value according to the change amount; the operational capacitor 'is disposed at the negative input end of the operational amplifier and the output end And a switch in parallel with the operational capacitor and resetting the amount of charge of the operational capacitor after actuation. For example, the touch display panel according to the first application of the patent scope, the package 201015410 includes: a touch control loop electrically connected to the read switch, and determining a touch position according to the 3 hai sensing output value. 5. The touch-sensitive display panel of claim 4, wherein the touch control loop comprises: a position determining unit coupled to the sensing reading unit, and determining the touch according to the sensing output value position. ❹6. The touch-sensitive display panel of claim i, wherein the touch-sensitive display panel is deformed by an external force. A touch display device having a touch display panel, the touch display panel comprising: a power supply unit; a touch sensing unit having a read switch and an inductive capacitor One end is electrically connected to the read switch, and the other end of the inductive electric valley is electrically connected to the power supply unit; and a sensing read unit is electrically connected to the read switch and outputs an inductive output value. The touch display panel is deformed by an external force, so that the capacitance value of the sensor 2 generates a change amount. The sensor reads the change amount to output the sense output value. 8. The touch display device of claim 7, wherein the inductive reading unit is an integrator. 9. If the application is as described in claim 7, the inductive reading unit includes the , 201015410 operational amplifier having a positive input terminal, a negative input terminal and an output terminal, wherein the negative input terminal and the negative input terminal The read switch is electrically connected, the positive input terminal receives a reference signal, and the operational amplifier outputs the induced output value according to the change amount; the operational capacitor 'is disposed between the negative input end of the operational amplifier and the output end And a switch, in parallel with the operational capacitor, and resetting the amount of charge of the operational 电容 capacitor after actuation. The touch display device of claim 7, further comprising: a touch control circuit electrically connected to the read switch, and determining a touch position according to the sense output value. 11. The touch-sensitive display device of claim 10, wherein the touch control loop comprises a position determining unit coupled to the sensing reading unit and determining according to the & sensing output value The touch position. 12. The touch display device of claim 7, wherein the «Hui touch display panel is deformed by an external force. 13. The method of the fourth embodiment of the sugar display panel, the control panel has a power supply unit, a touch sensing unit and a sensing reading unit. The touch sensing unit has a reading switch and a sensing a capacitor, the one end of the sensing capacitor is electrically connected to the read switch, and the other end of the sensing capacitor is electrically connected to the power supply unit. The driving method comprises the following steps: 20 201015410 causing the touch display panel to be deformed, The capacitance value of the sensing capacitor is generated by a variation; and the sensing reading unit outputs an inductive output value according to the amount of the variation. 14. The driving method of claim 13, wherein the touch display panel further comprises: turning on the read switch before the touch display panel is deformed.

15、如申請專利範圍第14項所述之驅動方法，於導通該漬取開關前更包含： 16 17 重置a亥感應讀取單元之一運算電容之電荷量。如申請專利範圍第13項所述之驅動方法於該感應讀取單元輪出該感應輸出值前更包含：導通該讀取開關。申明專利範圍第16項所述之驅動方法，於導通寫讀取開關前更包含：重置該感應讀取單元之一運算電容之電荷量。 18、如申請專利範圍第13項所述之驅動方法，其中該觸控式顯示面板係由一外力而產生形變。 19、一種觸控式顯示面板，包含： —第一掃描線；一第一資料線； —第一讀取線；一電源供應單元；至少一畫素，包含： 21 201015410 一畫素開關，係與該第一掃描線及該第一資料線電性連接；一畫素電容，係與該畫素開關電性連接；一讀取開關，係與該第一掃描線及該第一讀取線電性連接；及一感應電容，係與該電源供應單元及該讀取開關電性連接；以及一感應讀取單元，與該讀取開關電性連接，並輸出一感應輸出值，其中，該觸控式顯示面板因外力產生形變，俾使該感應電容的電容值產生一變化量，而該感應電容依據該變化量輸出該感應輸出值。 20、如申請專利範圍第19項所述之觸控式顯示面板，其中該感應讀取單元包含：一運算放大器，具有一正輸入端、一負輸入端及一輪出端，其中該負輸入端與該讀取開關電性連接，該正輸入端接收一參考訊號，該運算放大器係依據該變化量以輸出該感應輸出值；一運算電容，設置於該運算放大器之該負輸入端及該輸出端之間；以及一開關，與該運算電容並聯，並在作動後重置該運算電容之電荷量。 2215. The driving method as described in claim 14 of the patent application, further comprises: 16 17 resetting the charge amount of the operational capacitor of one of the sensing terminals. The driving method of claim 13 is further included before the inductive reading unit rotates the inductive output value: turning on the reading switch. The driving method described in claim 16 further comprises: resetting the amount of charge of the operational capacitor of one of the inductive reading units before turning on the write and read switch. 18. The driving method of claim 13, wherein the touch-sensitive display panel is deformed by an external force. 19. A touch display panel comprising: - a first scan line; a first data line; - a first read line; a power supply unit; at least one pixel, comprising: 21 201015410 a pixel switch The first scan line and the first data line are electrically connected to each other; a pixel capacitor is electrically connected to the pixel switch; and a read switch is connected to the first scan line and the first read line An electrical connection; and a sensing capacitor electrically connected to the power supply unit and the read switch; and an inductive reading unit electrically connected to the read switch and outputting an inductive output value, wherein The touch display panel is deformed by an external force, so that the capacitance value of the sensing capacitor generates a change amount, and the sensing capacitor outputs the sensing output value according to the change amount. The touch display panel of claim 19, wherein the inductive reading unit comprises: an operational amplifier having a positive input terminal, a negative input terminal and a round output terminal, wherein the negative input terminal Electrically connected to the read switch, the positive input terminal receives a reference signal, and the operational amplifier outputs the induced output value according to the change amount; an operational capacitor is disposed at the negative input end of the operational amplifier and the output Between the ends; and a switch, in parallel with the operational capacitor, and resetting the amount of charge of the operational capacitor after actuation. twenty two