TWI517002B - Method, apparatus, and system for detecting transmitter approximating or touching touch sensitive display - Google Patents
Method, apparatus, and system for detecting transmitter approximating or touching touch sensitive display Download PDFInfo
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Description
本發明係關於適用於內嵌式(in-cell)觸控螢幕,特別係關於利用內嵌式觸控螢幕來偵測近接的發信器。 The present invention relates to an in-cell touch screen, and more particularly to the use of an in-cell touch screen to detect a proximity transmitter.
觸控面板或觸控螢幕是相當重要的人機介面,特別是在消費性電子產品上,如手機、平板電腦、或個人數位助理等,觸控螢幕可說是最主要的輸出與輸入裝置。由於電容式觸控螢幕,特別是投射式電容的形式對於手指的部分感應特別靈敏,因此成為市面上主要的觸控面板/螢幕設計之一。 Touch panels or touch screens are important human-machine interfaces, especially on consumer electronics such as mobile phones, tablets, or personal digital assistants. Touch screens are the most important output and input devices. Since capacitive touch screens, especially in the form of projected capacitors, are particularly sensitive to partial finger sensing, they are one of the major touch panel/screen designs on the market.
利用指尖觸碰會遮擋住一部份的螢幕,使用者無法清楚地用眼睛確認觸控螢幕所偵測到的點在哪裡。而且使用指尖進行書寫的話,可能無法像使用筆那樣進行精確地控制。因此,使用者除了想使用手指進行觸控之外,也可能同時想要用筆來對觸控螢幕進行輸入。 Touching a fingertip can block a portion of the screen, and the user cannot clearly confirm with the eyes where the touch screen detects. Moreover, writing with a fingertip may not be precisely controlled like using a pen. Therefore, in addition to the user's desire to touch with a finger, the user may also want to input the touch screen with a pen.
一般來說,碰觸到觸控螢幕的筆尖面積要比指尖的面積小很多。對於電容式觸控螢幕來說,要偵測到筆所帶來的電容變化是一大挑戰。特別是在許多專業繪圖或排版的應用環境下,在筆的設計上需要增加許多功能按鈕。在這樣的需求下,觸控螢幕不僅僅要偵測到微小的筆尖,還要 能夠偵測這些功能按鈕是否被按下。 In general, the area of the nib that touches the touch screen is much smaller than the area of the fingertip. For capacitive touch screens, it is a challenge to detect the change in capacitance caused by the pen. Especially in many professional drawing or typesetting applications, many function buttons need to be added to the design of the pen. Under such demand, the touch screen not only needs to detect tiny nibs, but also Ability to detect if these function buttons have been pressed.
除此之外,現在的觸控螢幕可能走向內嵌式(in-cell)的形式,如何在內嵌式觸控螢幕當中偵測觸控筆,還要盡量避免干擾,成為市場上的迫切需要。因此,需要一種能夠在內嵌式觸控螢幕上偵測觸控筆的方法與裝置。 In addition, the current touch screen may be in the form of an in-cell. How to detect the stylus in the embedded touch screen, and avoid interference as much as possible, becoming an urgent need in the market. . Therefore, there is a need for a method and apparatus for detecting a stylus on an in-cell touch screen.
在一實施例中,本發明提供一種偵測近接於一觸控顯示裝置的一發信器之方法。其中該發信器發送一電信號,該電信號係由複數個頻率混合而成。該觸控顯示裝置包含位於像素電極與共同電極之間的液晶層以及複數個第二電極,其中該共同電極包含複數個第一電極,該複數個第一電極與該複數個第二電極的重疊處形成複數個感測點。該方法包含:針對每一個該第一電極計算其所接收之該電信號的總信號強度;針對每一個該第二電極計算其所接收之該電信號的總信號強度;以及根據所計算出之每一個該第一電極與每一個該第二電極所接收之該電信號的總信號強度,計算該發信器與該觸控顯示裝置的一相對位置。 In one embodiment, the present invention provides a method of detecting a transmitter that is in proximity to a touch display device. The transmitter sends an electrical signal, which is a mixture of a plurality of frequencies. The touch display device includes a liquid crystal layer between the pixel electrode and the common electrode and a plurality of second electrodes, wherein the common electrode includes a plurality of first electrodes, and the overlapping of the plurality of first electrodes and the plurality of second electrodes A plurality of sensing points are formed at the site. The method includes calculating, for each of the first electrodes, a total signal strength of the electrical signal that it receives; calculating, for each of the second electrodes, a total signal strength of the received electrical signal; and calculating Calculating a relative position of the transmitter and the touch display device for each of the first electrodes and the total signal strength of the electrical signals received by each of the second electrodes.
在另一實施例中,本發明提供一種觸控處理裝置,用於偵測近接於一觸控顯示裝置的一發信器。其中該發信器發送一電信號,該電信號係由複數個頻率混合而成。該觸控顯示裝置包含位於像素電極與共同電極之間的液晶層以及複數個第二電極,其中該共同電極包含複數個第一電極,該複數個第一電極與該複數個第二電極的重疊處形成複數個感測點。該觸控處理裝置係用於:針對每一個該第一電極計算其所接收之該電信號的總信號強度;針對每一個該第二電極計算其所接收之該電信號的總信號 強度;以及根據所計算出之每一個該第一電極與每一個該第二電極所接收之該電信號的總信號強度,計算該發信器與該觸控顯示裝置的一相對位置。 In another embodiment, the present invention provides a touch processing device for detecting a transmitter that is closely connected to a touch display device. The transmitter sends an electrical signal, which is a mixture of a plurality of frequencies. The touch display device includes a liquid crystal layer between the pixel electrode and the common electrode and a plurality of second electrodes, wherein the common electrode includes a plurality of first electrodes, and the overlapping of the plurality of first electrodes and the plurality of second electrodes A plurality of sensing points are formed at the site. The touch processing device is configured to: calculate, for each of the first electrodes, a total signal strength of the electrical signal received by the first electrode; and calculate, for each of the second electrodes, a total signal of the electrical signal received by the second electrode Intensity; and calculating a relative position of the transmitter and the touch display device according to the calculated total signal strength of the electrical signal received by each of the first electrode and each of the second electrodes.
在更一實施例中,本發明提供一種觸控顯示系統,用於偵測近接於一觸控顯示裝置的一發信器。該發信器發送一電信號,該電信號係由複數個頻率混合而成。該觸控顯示系統包含該觸控顯示裝置與上述的該觸控處理裝置。該觸控顯示系統還可以包含該發信器。 In a further embodiment, the present invention provides a touch display system for detecting a transmitter that is closely connected to a touch display device. The transmitter transmits an electrical signal that is a mixture of a plurality of frequencies. The touch display system includes the touch display device and the touch processing device described above. The touch display system can also include the transmitter.
總上所述,本發明的主要精神之一,在於利用內嵌式的觸控螢幕進行發信器的偵測,並且盡量減少觸控螢幕在更新掃描畫面時,對偵測所造成的電磁干擾。 In summary, one of the main spirits of the present invention is to use the embedded touch screen to detect the sender and minimize the electromagnetic interference caused by the touch screen when updating the scan screen. .
100‧‧‧發信器 100‧‧‧ sender
110‧‧‧電源模組 110‧‧‧Power Module
120‧‧‧處理模組 120‧‧‧Processing module
130‧‧‧感測器模組 130‧‧‧Sensor module
140‧‧‧頻率合成模組 140‧‧‧frequency synthesis module
150‧‧‧信號放大模組 150‧‧‧Signal amplification module
160‧‧‧發信模組 160‧‧‧Transmission module
210~220‧‧‧步驟 210~220‧‧‧Steps
300‧‧‧觸控系統 300‧‧‧ touch system
320‧‧‧觸控面板 320‧‧‧Touch panel
321‧‧‧第一電極 321‧‧‧first electrode
322‧‧‧第二電極 322‧‧‧second electrode
330‧‧‧觸控處理裝置 330‧‧‧Touch processing device
340‧‧‧主機 340‧‧‧Host
410‧‧‧接收器類比前端 410‧‧‧ Receiver analog front end
420‧‧‧解調變器 420‧‧‧Demodulation Transducer
510‧‧‧信號產生器 510‧‧‧Signal Generator
520I/520Q‧‧‧混波器 520I/520Q‧‧‧Mixer
530I/530Q‧‧‧積分器 530I/530Q‧‧‧ integrator
540I/540Q‧‧‧平方器 540I/540Q‧‧‧ squarer
550‧‧‧總和之均方根器 550‧‧‧ rms square root
600‧‧‧放大器 600‧‧ amp amplifier
605‧‧‧類比數位轉換器 605‧‧‧ Analog Digital Converter
610‧‧‧信號產生器 610‧‧‧Signal Generator
620I/620Q‧‧‧混波器 620I/620Q‧‧‧Mixer
630I/630Q‧‧‧加法積分器 630I/630Q‧‧‧Addition integrator
640I/640Q‧‧‧平方器 640I/640Q‧‧‧ squarer
650‧‧‧總和之均方根器 650‧‧‧ rms square root
700‧‧‧放大器 700‧‧‧Amplifier
710‧‧‧類比數位轉換器 710‧‧‧ Analog Digital Converter
720‧‧‧傅立葉轉換器 720‧‧‧Fourier converter
905~930‧‧‧步驟 905~930‧‧‧Steps
1000‧‧‧觸控顯示裝置 1000‧‧‧Touch display device
1020‧‧‧控制單元 1020‧‧‧Control unit
1030‧‧‧觸控感測單元 1030‧‧‧Touch sensing unit
1032‧‧‧觸控驅動電極 1032‧‧‧Touch drive electrode
1032-1~1032-y‧‧‧觸控驅動電極 1032-1~1032-y‧‧‧Touch drive electrode
1034‧‧‧觸控感測電極 1034‧‧‧Touch sensing electrode
1034-1~1034-3‧‧‧觸控感測電極 1034-1~1034-3‧‧‧Touch sensing electrode
1040‧‧‧顯示像素單元 1040‧‧‧Display pixel unit
1042‧‧‧液晶層 1042‧‧‧Liquid layer
1044‧‧‧像素電極 1044‧‧‧pixel electrode
1046‧‧‧共同電極 1046‧‧‧Common electrode
1048‧‧‧薄膜電晶體層 1048‧‧‧Thin film transistor layer
1050‧‧‧遮光層 1050‧‧‧Lighting layer
1052‧‧‧彩色濾光片 1052‧‧‧Color filters
1060‧‧‧第一基板 1060‧‧‧First substrate
1062‧‧‧第二基板 1062‧‧‧second substrate
1070‧‧‧第一偏振層 1070‧‧‧First Polarization Layer
1072‧‧‧第二偏振層 1072‧‧‧Second polarizing layer
1080‧‧‧背光模組 1080‧‧‧Backlight module
1100‧‧‧選擇電路 1100‧‧‧Selection circuit
1300~1330‧‧‧步驟 1300~1330‧‧ steps
1400~1430‧‧‧步驟 1400~1430‧‧‧Steps
D1‧‧‧觸控驅動電極的驅動方向 Driving direction of D1‧‧‧ touch drive electrodes
D2‧‧‧薄膜電晶體層的更新掃描方向 D2‧‧‧Update scan direction of thin film transistor layer
DG1~DGn‧‧‧觸控驅動電極群 DG1~DGn‧‧‧Touch drive electrode group
DG1~DGk‧‧‧觸控驅動電極群 DG1~DGk‧‧‧Touch drive electrode group
DG1~DGj‧‧‧觸控驅動電極群 DG1~DGj‧‧‧Touch drive electrode group
EX1~EXz‧‧‧延伸部 EX1~EXz‧‧‧Extension
PL‧‧‧水平像素線 PL‧‧‧ horizontal pixel line
SE1~SEm‧‧‧子電極 SE1~SEm‧‧‧Subelectrode
SG1~SGn‧‧‧子電極群 SG1~SGn‧‧‧ subelectrode group
Vcom‧‧‧直流電位 Vcom‧‧‧DC potential
第一圖為根據本發明一實施例的一發信器的一示意圖。 The first figure is a schematic diagram of a transmitter according to an embodiment of the invention.
第二圖為根據本發明一實施例的一發信方法的一流程示意圖。 The second figure is a schematic flowchart of a signaling method according to an embodiment of the invention.
第三圖為根據本發明一實施例的一觸控系統的一示意圖。 The third figure is a schematic diagram of a touch system according to an embodiment of the invention.
第四圖為根據本發明一實施例的一觸控處理裝置的一部份方塊示意圖。 FIG. 4 is a partial block diagram of a touch processing device according to an embodiment of the invention.
第五圖為根據本發明一實施例的一類比解調變器的一部份方塊示意圖。 The fifth figure is a partial block diagram of an analog demodulator according to an embodiment of the invention.
第六圖為根據本發明一實施例的一數位解調變器的一部份方塊示意圖。 Figure 6 is a partial block diagram of a digital demodulation transformer in accordance with an embodiment of the present invention.
第七圖為根據本發明一實施例的一數位解調變器的一部份方塊示意圖。 FIG. 7 is a partial block diagram of a digital demodulation transformer according to an embodiment of the invention.
第八圖為根據第七圖之數位解調變器所解調變之一結果示意圖。 The eighth figure is a schematic diagram showing the result of demodulation of the digital demodulator according to the seventh figure.
第九A圖為根據本發明一實施例的一感測發信器方法的一流程示意圖。 FIG. 9A is a schematic flow chart of a method for sensing a transmitter according to an embodiment of the invention.
第九B圖為根據本發明一實施例的一感測發信器方法的一流程示意圖。 FIG. IB is a schematic flow chart of a method for sensing a transmitter according to an embodiment of the invention.
第十A圖至第十F圖為本發明實施例的一觸控顯示裝置之結構示意圖。 10A to 10F are schematic diagrams showing the structure of a touch display device according to an embodiment of the invention.
第十一A圖、第十一B圖、第十一C圖與第十一D圖為本發明實施例的共同電極與複數條觸控驅動電極之結構示意圖。 11A, 11B, 11C, and 11D are schematic structural views of a common electrode and a plurality of touch driving electrodes according to an embodiment of the present invention.
第十二圖為本發明一實施例的薄膜電晶體層的更新掃描與複數條觸控驅動電極的驅動方向的局部透視圖。 Figure 12 is a partial perspective view showing the updating scan of the thin film transistor layer and the driving direction of the plurality of touch driving electrodes according to an embodiment of the present invention.
第十三圖為本發明一實施例的觸控驅動電極驅動方法的一方塊流程圖。 FIG. 13 is a block diagram of a method for driving a touch driving electrode according to an embodiment of the invention.
第十四圖為本發明一實施例的觸控驅動電極進行電信號偵測方法的一方塊流程圖。 FIG. 14 is a block diagram of a method for detecting an electrical signal of a touch driving electrode according to an embodiment of the invention.
本發明將詳細描述一些實施例如下。然而,除了所揭露的實施例外,本發明的範圍並不受該些實施例的限定,乃以其後的申請專利範圍為準。而為了提供更清楚的描述及使該項技藝的普通人員能理解本發明的發明內容,圖示內各部分並沒有依照其相對的尺寸進行繪圖,某些尺寸或其他相關尺度的比例可能被凸顯出來而顯得誇張,且不相關的細節部分並沒有完全繪出,以求圖示的簡潔。 The invention will be described in detail below with some embodiments. However, the scope of the present invention is not limited by the embodiments, except as to the disclosed embodiments, which are subject to the scope of the claims. In order to provide a clearer description and to enable those skilled in the art to understand the present invention, the various parts of the drawings are not drawn according to their relative sizes, and the ratio of certain dimensions or other related scales may be highlighted. It is exaggerated to come out, and the irrelevant details are not completely drawn, in order to simplify the illustration.
在一實施例中,本發明所稱的發信器可以是觸控筆。在某些實施例中,發信器可以是其他種放置在觸控面板或螢幕上的物件。比方說,當觸控螢幕呈現遊戲的棋盤時,發信器可以是棋子。遊戲程式偵測棋子在觸控螢幕上的位置之後,即可以得知棋子的位置。 In one embodiment, the transmitter referred to in the present invention may be a stylus. In some embodiments, the transmitter can be other items placed on the touch panel or screen. For example, when the touch screen presents the board of the game, the sender can be a piece. After the game program detects the position of the piece on the touch screen, the position of the piece can be known.
無論發信器實際上與觸控面板的接觸面積有多少,其接觸點有幾個,該發信器至少包含一發信定位點。觸控面板或螢幕可以偵測該發信定位點的位置,作為該發信器所表示之物件在觸控面板或螢幕上的代表位置。在一實施例中,該發信器可以不需要接觸觸控面板,僅需要發信定 位點靠近觸控面板,即可讓觸控面板偵測到該發信定位點。 Regardless of the contact area of the transmitter with the touch panel, there are several contact points, and the transmitter includes at least one signaling anchor point. The touch panel or the screen can detect the position of the transmitting positioning point as a representative position of the object represented by the sender on the touch panel or the screen. In an embodiment, the sender does not need to touch the touch panel, and only needs to send a message. The location of the location near the touch panel allows the touch panel to detect the location of the call.
在一實施例中,該發信器可以包含複數個發信定位點。當觸控面板偵測到該複數個發信定位點時,可以偵測到該發信器的面對方向。在更一實施例中,該發信器可以包含m個發信定位點,而當觸控面板偵測到其中的n個發信定位點時,即可能偵測到該發信器在觸控面板上的姿態。比方說,發信器可以是具有四個發信定位點的三角體,每一個發信定位點設置在三角體的頂端。透過偵測接觸到觸控面板上的三個發信定位點,即可以偵測到三角體的哪一面與觸控面板接觸。發信器可以是具有八個發信定位點的正方體,每一個發信定位點設置在正方體的頂端。這種發信器即可以充當骰子使用。 In an embodiment, the sender may include a plurality of signaling anchors. When the touch panel detects the plurality of signaling anchor points, the facing direction of the transmitter can be detected. In a further embodiment, the sender may include m signaling anchor points, and when the touch panel detects n of the signaling positioning points, the transmitter may be detected to be in touch. The pose on the panel. For example, the sender can be a triangle with four signaling fix points, each of which is placed at the top of the triangle. By detecting the three signaling positioning points on the touch panel, it is possible to detect which side of the triangle is in contact with the touch panel. The sender can be a cube with eight signaling fix points, each of which is placed at the top of the cube. This type of transmitter can be used as a dice.
請參考第一圖所示,其為根據本發明一實施例的一發信器100的一示意圖。發信器100包含電源模組110、處理模組120、感測器模組130、頻率合成模組140、信號放大模組150、與發信模組160。如上所述,該發信器100的外型可以作為一觸控筆的形狀。在一實施例中,上述的各個模組可以依照第一圖所示的順序,依序安排在觸控筆的內部,其下端用於和觸控面板接觸或靠近。該發信器100可以包含一總開關,用於啟閉該發信器100的電力。 Please refer to the first figure, which is a schematic diagram of a transmitter 100 according to an embodiment of the invention. The transmitter 100 includes a power module 110, a processing module 120, a sensor module 130, a frequency synthesizing module 140, a signal amplifying module 150, and a signaling module 160. As described above, the appearance of the transmitter 100 can be used as the shape of a stylus. In an embodiment, each of the above modules may be arranged in the interior of the stylus in the order shown in the first figure, and the lower end is used to contact or approach the touch panel. The transmitter 100 can include a master switch for turning the power of the transmitter 100 on and off.
該電源模組110可以包含與電力供應與控制相關的電路,例如電池組、直流電對直流電的電壓轉換電路、以及電力管理單元等。上述的電池組可以是可充電電池,也可以是一次性拋棄式電池。當電池組為可充電電池時,該電源模組110可以更包含一充電電路,用於將外界的電源輸入到該充電電池當中。在一實施例中,該充電電路可以包含在電力管理單 元當中,用於保護可充電電池的過度放電與過度充電。 The power module 110 may include circuits related to power supply and control, such as a battery pack, a direct current to direct current voltage conversion circuit, and a power management unit. The above battery pack may be a rechargeable battery or a disposable disposable battery. When the battery pack is a rechargeable battery, the power module 110 may further include a charging circuit for inputting an external power source into the rechargeable battery. In an embodiment, the charging circuit can be included in the power management sheet In the middle, it is used to protect the rechargeable battery from over-discharging and over-charging.
上述的處理模組120用於控制該發信器100,其可以包含一微處理器。上述的感測器模組130可以包含至少一種感測器。感測器可以包含例如觸控筆尖的壓力感測器、按鈕、加速度計、電感計、旋鈕等類型的感測器。感測器的狀態可以是二元性質,例如按鈕可以是按下狀態或彈起狀態。加速度計的狀態可以包含靜止或運動中。感測器的狀態也可以是多元性的離散數值,例如壓力感測器所感受的壓力可以分為四段、十段、或十六段。旋鈕的狀態也可以分為四段、八段、十六段等。感測器的狀態也可以是一段類比的區間。上述的處理模組120可以偵測到感測器模組130內感測器的狀態,據而產生一發信器狀態。 The processing module 120 described above is used to control the transmitter 100, which may include a microprocessor. The sensor module 130 described above may include at least one sensor. The sensor can include a sensor such as a pressure sensor of a stylus tip, a button, an accelerometer, an inductometer, a knob, and the like. The state of the sensor can be binary in nature, for example the button can be in a pressed state or a popped state. The state of the accelerometer can be either stationary or in motion. The state of the sensor can also be a discrete value of diversity. For example, the pressure felt by the pressure sensor can be divided into four segments, ten segments, or sixteen segments. The state of the knob can also be divided into four segments, eight segments, sixteen segments, and the like. The state of the sensor can also be an analogous interval. The processing module 120 can detect the state of the sensor in the sensor module 130, thereby generating a transmitter state.
上述的頻率合成模組140包含複數個頻率產生器以及一頻率合成模組或混波器。在一實施例中,上述的複數個頻率產生器可以包含複數個石英震盪器。在另一實施例中,上述的複數頻率產生器可以使用單一個頻率來源,利用除頻器、增頻器、鎖相電路以及其他合適的電路,來產生複數個頻率。這些頻率並不互為諧振波,也和用於偵測該發信器100的觸控面板所發出的頻率不同,也不互為諧振波。因此,可以避開各頻率互相干擾的情況。 The frequency synthesizing module 140 includes a plurality of frequency generators and a frequency synthesizing module or a mixer. In an embodiment, the plurality of frequency generators described above may comprise a plurality of quartz oscillators. In another embodiment, the complex frequency generator described above can generate a plurality of frequencies using a single frequency source, using a frequency divider, a frequency multiplier, a phase lock circuit, and other suitable circuitry. These frequencies are not mutually resonant waves, and are different from the frequencies emitted by the touch panel for detecting the transmitter 100, and are not mutually resonant waves. Therefore, it is possible to avoid the situation in which the frequencies interfere with each other.
在某些實施例當中,上述的複數個頻率的範圍落在觸控面板所能偵測的頻率範圍之內。比方說,一般的觸控面板所能偵測的頻率範圍大約是90kHz~250kHz之間,所以複數個頻率產生器所產生的頻率可以落在這個範圍之間。 In some embodiments, the range of the plurality of frequencies described above falls within a frequency range detectable by the touch panel. For example, the frequency range that a typical touch panel can detect is about 90 kHz to 250 kHz, so the frequency generated by a plurality of frequency generators can fall within this range.
在一實施例中,上述的處理模組120可以決定頻率合成模組 140混合複數個頻率中的那些頻率。也就是可以個別控制某一頻率要不要加入混波器當中,當然也可以控制個別頻率的信號強度。在另一實施例中,上述的處理模組120可以決定頻率合成模組140的各頻率之信號強度的比例。比方說,可以令第一頻率的信號強度與第二頻率的信號強度之比例設為3:7。也可以令第一頻率、第二頻率、第三頻率的信號強度之比例設為24:47:29等。本領域的普通技術人員可以理解到,雖然頻率合成模組140可以用來產生並且混合多個頻率,但處理模組120根據感測器模組130的各個感測器狀態,也可能令頻率合成模組140產生單一頻率,而不和其他的頻率進行混合。 In an embodiment, the processing module 120 can determine a frequency synthesis module. 140 mixes those frequencies in a plurality of frequencies. That is, it is possible to individually control whether a certain frequency is to be added to the mixer, and of course, it is also possible to control the signal strength of the individual frequencies. In another embodiment, the processing module 120 can determine the ratio of the signal strength of each frequency of the frequency synthesis module 140. For example, the ratio of the signal strength of the first frequency to the signal strength of the second frequency can be set to 3:7. It is also possible to set the ratio of the signal strengths of the first frequency, the second frequency, and the third frequency to 24:47:29 or the like. A person skilled in the art can understand that although the frequency synthesis module 140 can be used to generate and mix multiple frequencies, the processing module 120 may also synthesize the frequency according to the state of each sensor of the sensor module 130. Module 140 produces a single frequency that is not mixed with other frequencies.
在一實施例中,某一頻率的信號強度可以相應於感測器模組130當中的裝置在筆尖的壓力感測器,或是具有多段狀態的旋鈕。比方說,在一繪圖軟體當中,觸控筆筆尖的壓力感測器表示筆色的濃郁程度,觸控筆旋鈕的旋轉程度表示筆刷的直徑大小。因此,可以利用第一頻率的信號強度來表示壓力感測器的壓力,還可以利用第二頻率的信號強度來表示旋鈕的旋轉程度。 In an embodiment, the signal strength of a certain frequency may correspond to a pressure sensor of the device in the sensor module 130 at the tip of the pen, or a knob having a plurality of segments. For example, in a drawing software, the pressure sensor of the stylus pen tip indicates the richness of the pen color, and the degree of rotation of the stylus knob indicates the diameter of the brush. Therefore, the signal intensity of the first frequency can be used to represent the pressure of the pressure sensor, and the signal strength of the second frequency can also be used to indicate the degree of rotation of the knob.
在另一實施例中,可以利用某一頻率的信號強度佔混合後的信號強度之比例,來對應某一感測器的多元狀態。比方說,第一頻率的信號強度與第二頻率的信號強度之比例為3:7時,表示該感測器的狀態為十段中的第三段,如果是強度比例改為6:4時,則表示該感測器的狀態為時段中的第六段。換言之,如果有三種頻率的話,那麼可以利用第一頻率比第二頻率之第一信號強度比例、第二頻率比第三頻率之第二信號強度比例、以及第三頻率比第一頻率之第三信號強度比例分別表示三種具有多元狀態的 感測器的狀態。 In another embodiment, the ratio of the signal strength of a certain frequency to the combined signal strength may be utilized to correspond to the multi-state of a certain sensor. For example, when the ratio of the signal strength of the first frequency to the signal strength of the second frequency is 3:7, it indicates that the state of the sensor is the third segment of the ten segments, if the intensity ratio is changed to 6:4. , indicating that the state of the sensor is the sixth segment in the time period. In other words, if there are three frequencies, then the first signal intensity ratio of the first frequency to the second frequency, the second signal strength ratio of the second frequency to the third frequency, and the third frequency to the third frequency of the first frequency may be utilized. Signal strength ratios represent three types with multiple states The state of the sensor.
上述的信號放大模組150係用於將上述頻率合成模組140所混合產生的信號放大。在一實施例中,上述的信號放大相應於感測器模組130當中的裝置在筆尖的壓力感測器。假設壓力感測器的電路相應於信號放大模組150的一可變增益放大器(VGA,variable gain amplifier),壓力感測器的電路可以不經過上述的處理模組120,直接控制該可變增益放大器的增益。因此,該頻率合成模組140所輸出的混合信號將經由該可變增益放大器放大後,送到發信模組160。 The signal amplifying module 150 is configured to amplify a signal generated by mixing the frequency synthesizing module 140. In one embodiment, the signal amplification described above corresponds to a pressure sensor of the device in the sensor module 130 at the tip of the pen. Assuming that the circuit of the pressure sensor corresponds to a variable gain amplifier (VGA) of the signal amplifying module 150, the circuit of the pressure sensor can directly control the variable gain without passing through the processing module 120. The gain of the amplifier. Therefore, the mixed signal output by the frequency synthesizing module 140 is amplified by the variable gain amplifier and sent to the transmitting module 160.
先前所述,可以利用混合信號當中某一頻率的信號強度來表示一感測器的多元狀態。也可以利用混合信號當中兩個頻率的信號強度比例來表示一感測器的多元狀態。在此同時,可以利用信號放大模組150來放大混合信號,用於表示另一感測器的多元狀態。舉例來說,該發信器100包含兩個具有多元狀態的感測器,一是裝置在筆尖的壓力感測器,其二是裝置在筆身的旋鈕。兩者分別用來表示筆觸的色深與直徑大小。在一實施例中,可以利用混合信號的強度來表示壓力感測器所受到的壓力大小,旋鈕的狀態則是利用混合信號當中兩個頻率的信號強度比例來表示。 As previously stated, the signal strength of a frequency in a mixed signal can be utilized to represent the multi-state of a sensor. It is also possible to use the ratio of the signal intensities of the two frequencies in the mixed signal to represent the multivariate state of a sensor. At the same time, the signal amplification module 150 can be utilized to amplify the mixed signal for indicating the multi-state of the other sensor. For example, the transmitter 100 includes two sensors having a multi-state state, one being a pressure sensor of the device at the tip of the pen, and the other being a knob of the device at the pen body. The two are used to indicate the color depth and diameter of the stroke. In one embodiment, the intensity of the mixed signal can be used to represent the magnitude of the pressure experienced by the pressure sensor, and the state of the knob is represented by the ratio of the signal strengths of the two frequencies in the mixed signal.
在本發明的一實施例中,上述的發信模組160係包含裝置在筆尖的壓力感測器。該發信模組160可以是一組天線或一具有適當阻抗值的導體或電極,或可稱之為激勵電極。該筆尖的導體或電極連接到該壓力感測器。當發信模組160發出信號,而且接觸到觸控面板/螢幕時,信號就會流入觸控面板/螢幕的感測電極。當發信模組160靠近但未接觸到觸控面板/螢幕的時候,觸控面板/螢幕的感測電極也會感應到發信模組160上的信號變化 量,進而使觸控面板/螢幕偵測到該發信器100靠近。 In an embodiment of the invention, the signaling module 160 includes a pressure sensor with a device at the tip of the pen. The signaling module 160 can be a set of antennas or a conductor or electrode having a suitable impedance value, or can be referred to as an excitation electrode. The conductor or electrode of the nib is connected to the pressure sensor. When the signaling module 160 signals and touches the touch panel/screen, the signal flows into the sensing electrodes of the touch panel/screen. When the transmitting module 160 is close to but not touching the touch panel/screen, the sensing electrodes of the touch panel/screen also sense the signal change on the transmitting module 160. The amount, and thus the touch panel/screen, detects that the sender 100 is close.
當該頻率合成模組140可以合成n種頻率時,就可以利用信號的頻率來調變出2n個狀態。比方說,當n等於三時,可以利用信號的頻率調變出八個狀態。請參照表一所示,其為根據本發明一實施例的發信器狀態與各感測器狀態的一表示。 When the frequency synthesizing module 140 can synthesize n kinds of frequencies, the frequency of the signal can be used to modulate 2 n states. For example, when n is equal to three, eight states can be modulated by the frequency of the signal. Referring to Table 1, it is a representation of the state of the transmitter and the state of each sensor in accordance with an embodiment of the present invention.
在表一所示的實施例中,該感測器模組130包含三個感測器,分別是筆尖的壓力感測器、第一按鈕、與第二按鈕。這三個感測器的狀態都是二元狀態,因此組合起來有八種發信器狀態,如表一所示。本領域的普通技術人員可以理解到,上述的發信器狀態與各感測器狀態可以隨意調換位置。比方說第一發信器狀態可以和其他的發信器狀態對調,如第七發信器狀態。 In the embodiment shown in Table 1, the sensor module 130 includes three sensors, which are a pressure sensor of the pen tip, a first button, and a second button. The states of these three sensors are all binary states, so there are eight transmitter states combined, as shown in Table 1. It will be understood by those skilled in the art that the above-mentioned transmitter state and each sensor state can be arbitrarily changed positions. For example, the first sender state can be reversed with other transmitter states, such as the seventh transmitter state.
請參考表二所示,其為根據本發明一實施例的發信器狀態與各頻率的一表示。已如前述,該頻率合成模組140可以合成三種不同頻率。 所以可以將各個發信器狀態對應到各個頻率。如表二所示。本領域的普通技術人員可以理解到,上述的發信器狀態與各感測器狀態可以隨意調換位置。比方說第一發信器狀態可以和其他的發信器狀態對調,如第八發信器狀態。 Please refer to Table 2, which is a representation of the state of the transmitter and each frequency in accordance with an embodiment of the present invention. As described above, the frequency synthesis module 140 can synthesize three different frequencies. Therefore, each sender state can be mapped to each frequency. As shown in Table 2. It will be understood by those skilled in the art that the above-mentioned transmitter state and each sensor state can be arbitrarily changed positions. For example, the first sender state can be reversed with other transmitter states, such as the eighth transmitter state.
在一實施例中,當筆尖的壓力感測器感測器沒有感受到壓力時,該發信器100仍然混合頻率並發出信號。在另一實施例中,當筆尖的壓力感測器感測器沒有感受到壓力時,該發信器100就不混合頻率,也不發出信號。對照到表二,此狀態就是第七發信器狀態。在此實施例中,表一可以修改為表三。 In one embodiment, the transmitter 100 still mixes the frequency and signals when the pressure sensor sensor of the pen tip does not sense the pressure. In another embodiment, the transmitter 100 does not mix frequencies and does not signal when the pressure sensor sensor of the pen tip does not sense the pressure. Referring to Table 2, this state is the seventh sender state. In this embodiment, Table 1 can be modified to Table 3.
在表一至表三所示的實施例當中,該發信器100所發出的信號僅利用頻率的合成作為信號調變的因子。在接下來的實施例中,除了頻率的合成之外,該發信器100可以再加上信號強度與/或各頻率信號強度的比例作為信號調變的因子。 In the embodiments shown in Tables 1 to 3, the signal emitted by the transmitter 100 utilizes only the synthesis of frequencies as a factor of signal modulation. In the following embodiments, in addition to the synthesis of the frequency, the transmitter 100 may add a ratio of signal strength and/or signal strength of each frequency as a factor of signal modulation.
請參考表四所示,其為根據本發明一實施例的發信器頻率狀態與各感測器狀態的一表示。和表一所示的實施例相比,壓力感測器所感測得知的狀態不再只限於有/無接觸壓力的二元狀態,而是大於二的多元狀態。因此,在表四的左列並不能稱為發信器狀態,只能稱為發信器頻率狀態。此實施例的發信器狀態的調變因子除了頻率狀態之外,還要考慮到信號強度。 Please refer to Table 4, which is a representation of the transmitter frequency state and the state of each sensor in accordance with an embodiment of the present invention. Compared with the embodiment shown in Table 1, the state sensed by the pressure sensor is no longer limited to the binary state with/without contact pressure, but to the multi-state of greater than two. Therefore, the left column of Table 4 cannot be called the sender state and can only be called the sender frequency state. The modulation factor of the transmitter state of this embodiment takes into account the signal strength in addition to the frequency state.
請參考表五所示,其為本發明一實施例的發信器狀態與各頻率及信號強度的一表示。其中,該信號強度調變可以是混合信號的信號強度值,例如是壓力感測器的接觸壓力段數。 Please refer to Table 5, which is a representation of the transmitter state and each frequency and signal strength according to an embodiment of the present invention. Wherein, the signal strength modulation may be a signal strength value of the mixed signal, for example, the number of contact pressure segments of the pressure sensor.
在表五的實施例中,由於第五到第八發信器頻率狀態所對應的壓力感測器之接觸壓力段數為零,因此其信號強度調變的結果也可以為零。換言之,即不發出信號。在另一實施例中,其信號強度調變可以是一固定值,其固定信號強度可以不同於相應於壓力感測器的接觸壓力段數之信號強度。 In the embodiment of Table 5, since the number of contact pressure segments of the pressure sensor corresponding to the fifth to eighth transmitter frequency states is zero, the result of the signal strength modulation can also be zero. In other words, no signal is sent. In another embodiment, the signal strength modulation may be a fixed value, and the fixed signal strength may be different from the signal strength corresponding to the number of contact pressure segments of the pressure sensor.
請參考第二圖所示,其為根據本發明一實施例的一發信方法 的一流程示意圖。該發信方法可以適用於第一圖所示的發信器100,但不限於此。該發信方法包含兩個步驟,在步驟210當中,根據該發信器所包含的一感測器模組內的狀態產生一發信器狀態。以及在步驟220當中,根據該發信器狀態發送一電信號至一觸控面板,使得該觸控面板分析該電信號後得知該發信器狀態與該發信器與該觸控面板的一相對位置,其中該電信號係由複數個頻率混合而成。 Please refer to the second figure, which is a signaling method according to an embodiment of the present invention. A schematic diagram of the process. The signaling method can be applied to the transmitter 100 shown in the first figure, but is not limited thereto. The method of transmitting includes two steps. In step 210, a transmitter state is generated based on a state within a sensor module included in the transmitter. And in step 220, sending an electrical signal to a touch panel according to the state of the transmitter, so that the touch panel analyzes the electrical signal to know the state of the transmitter and the sender and the touch panel. A relative position, wherein the electrical signal is a mixture of a plurality of frequencies.
在一實施例中,該感測器模組內的感測器包含下列其中之一:按鈕、旋鈕、壓力感測器、加速度計、或陀螺儀。其中該壓力感測器可以用於感測該發信器與該觸控面板之間的接觸壓力程度。 In one embodiment, the sensor within the sensor module includes one of: a button, a knob, a pressure sensor, an accelerometer, or a gyroscope. The pressure sensor can be used to sense the degree of contact pressure between the transmitter and the touch panel.
當該感測器模組內包含複數個感測器時,該發信器狀態的可能狀態數量為每一該複數個感測器的可能狀態數量的總和。或者是在另一實施例中,該發信器狀態表示為每一該複數個感測器的狀態表示的任意組合之一。在一實施例中,該感測器模組內的一感測器之狀態表示為二的倍數n,其中n為大於或等於0的整數。 When the sensor module includes a plurality of sensors, the number of possible states of the transmitter state is the sum of the number of possible states of each of the plurality of sensors. Or in another embodiment, the transmitter status is represented as one of any combination of state representations for each of the plurality of sensors. In one embodiment, the state of a sensor within the sensor module is represented as a multiple of two, where n is an integer greater than or equal to zero.
上述的電信號的調變因子包含下列其中之一或其組合:頻率、以及強度。在一實施例中,該電信號的信號強度係相應於該感測器模組內具有多元狀態的感測器之狀態。在另一實施例中,該電信號所混合之一第一頻率與一第二頻率的信號強度係相應於該感測器模組內具有多元狀態的感測器之狀態。在更一實施例中,其中該電信號的信號強度係相應於該感測器模組內具有多元狀態的第一感測器之狀態,其中該電信號所混合之一第一頻率與一第二頻率的信號強度比例係相應於該感測器模組內具有多元狀態的第二感測器之狀態。 The modulation factor of the above electrical signal includes one or a combination of the following: frequency, and intensity. In one embodiment, the signal strength of the electrical signal corresponds to the state of the sensor having a multivariate state within the sensor module. In another embodiment, the signal strength of the first frequency and the second frequency mixed by the electrical signal corresponds to a state of the sensor having a multi-state in the sensor module. In a further embodiment, the signal strength of the electrical signal corresponds to a state of the first sensor having a multi-state in the sensor module, wherein the electrical signal is mixed with a first frequency and a first The signal strength ratio of the two frequencies corresponds to the state of the second sensor having a multivariate state in the sensor module.
本發明的主要精神之一,在於使用多個頻率混合而成的電信號,使得觸控面板得以偵測到發出該電信號之發信器的位置與其上感測器的狀態。 One of the main spirits of the present invention is to use an electrical signal mixed with a plurality of frequencies so that the touch panel can detect the position of the transmitter that emits the electrical signal and the state of the sensor thereon.
請參考第三圖所示,其為根據本發明一實施例的一觸控系統300的一示意圖。觸控系統300包含至少一發信器100、一觸控面板320、一觸控處理裝置330與一主機340。在本實施例中,發信器100可以適用上述實施例所敘述的發信器,特別適用於第一圖與第二圖所示實施例。另外值得注意的是,本觸控系統300可以包含複數個發信器100。上述的觸控面板320形成於一基板,該觸控面板320可以為觸控螢幕,本發明並不限定觸控面板320的形式。 Please refer to the third figure, which is a schematic diagram of a touch system 300 according to an embodiment of the invention. The touch system 300 includes at least one transmitter 100, a touch panel 320, a touch processing device 330, and a host 340. In the present embodiment, the transmitter 100 can be applied to the transmitter described in the above embodiments, and is particularly suitable for the embodiments shown in the first and second figures. It is also worth noting that the touch system 300 can include a plurality of transmitters 100. The touch panel 320 is formed on a substrate, and the touch panel 320 can be a touch screen. The invention does not limit the form of the touch panel 320.
在一實施例中,該觸控面板320的觸控區內包含複數個第一電極321與複數個第二電極322,兩者重疊處形成複數個感測點。這些第一電極321與第二電極322分別連接到觸控處理裝置330。在互電容的偵測模式下,該第一電極321可以稱為第一導電條或驅動電極,該第二電極322可以稱為第二導電條或感測電極。該觸控處理裝置330可以利用提供驅動電壓到該些第一電極321,並量測該些第二電極322的信號變化,得知有外部導電物件靠近或接觸(簡稱近接)該觸控面板320。本領域的普通技術人員可以理解到,上述的觸控處理裝置330可以利用互電容或自電容的方式來偵測近接事件與近接物件,在此不再加以詳述。除了互電容或自電容的偵測方式之外,觸控處理裝置330還可以偵測該發信器100所發出的電信號,進而偵測出該發信器100與該觸控面板320的相對位置。本發明將在後面的段落中詳細介紹其偵測原理。 In an embodiment, the touch panel 320 includes a plurality of first electrodes 321 and a plurality of second electrodes 322, and a plurality of sensing points are formed at the overlapping portions. The first electrode 321 and the second electrode 322 are respectively connected to the touch processing device 330. In the mutual capacitance detection mode, the first electrode 321 may be referred to as a first conductive strip or a driving electrode, and the second electrode 322 may be referred to as a second conductive strip or a sensing electrode. The touch processing device 330 can use the driving voltage to the first electrodes 321 and measure the signal changes of the second electrodes 322 to know that the external conductive objects are close to or in contact with each other (referred to as the proximity) of the touch panel 320. . A person skilled in the art can understand that the touch processing device 330 can detect the proximity event and the proximity object by means of mutual capacitance or self-capacitance, and will not be described in detail herein. In addition to the mutual capacitance or self-capacitance detection method, the touch processing device 330 can also detect the electrical signal emitted by the transmitter 100, thereby detecting the relative relationship between the transmitter 100 and the touch panel 320. position. The present invention will be described in detail in the following paragraphs.
在第三圖中還包含一主機340,其可以是中央處理器之類的作業系統,或者是嵌入式系統內的主處理器,或是其他形式的電腦。在一實施例中,該觸控系統300可以是一平板電腦,該主機340可以是執行平板電腦作業程式的中央處理器。比方說,該平板電腦執行安卓(Android)作業系統,該主機340為執行安卓作業系統的安謀(ARM)處理器。本發明並不限定該主機340與該觸控處理裝置330之間所傳輸的資訊形式,只要所傳輸的資訊跟該觸控面板320上所發生的近接事件相關即可。 Also included in the third figure is a host 340, which may be an operating system such as a central processing unit, or a main processor within an embedded system, or other form of computer. In one embodiment, the touch system 300 can be a tablet computer, and the host computer 340 can be a central processing unit that executes a tablet operating program. For example, the tablet executes an Android operating system, which is an ARM (ARM) processor that executes an Android operating system. The present invention does not limit the form of information transmitted between the host 340 and the touch processing device 330, as long as the transmitted information is related to the proximity event occurring on the touch panel 320.
請參考第四圖所示,其為根據本發明一實施例的一觸控處理裝置330的一部份方塊示意圖。如上所述,該觸控處理裝置330可以利用互電容或自電容的原理偵測近接事件,故與電容偵測的部分在此省略不敘。第四圖所示的實施例中,包含了接收器類比前端410以及解調變器420。 Please refer to the fourth figure, which is a partial block diagram of a touch processing device 330 according to an embodiment of the invention. As described above, the touch processing device 330 can detect the proximity event by using the principle of mutual capacitance or self-capacitance, and therefore the portion that is detected with the capacitance is omitted here. In the embodiment shown in the fourth figure, a receiver analog front end 410 and a demodulation transformer 420 are included.
接收器類比前端410係用於連接前述的第一電極321或第二電極322。在一實施例中,每一條第一電極321與每一條第二電極322都連接到一個接收器類比前端410。在另一實施例中,數條第一電極321成為一組,數條第二電極322成為一組,每一組第一電極321對應到一個接收器類比前端410,每一組第二電極322對應到另一個接收器類比前端410。每一個接收器類比前端410輪流接收該組中的第一電極321或第二電極322的信號。在另一實施例中,一組第一電極321與一組第二電極322對應到一個接收器類比前端410。該接收器類比前端410可以先輪流連接該第一電極321之組內的第一電極321,再輪流連接該第二電極322之組內的第二電極322。反過來,該接收器類比前端410可以先輪流連接該第二電極322之組內的第二電極322,再輪流連接該第一電極321之組內的第一電極321。在一實施例中,該 觸控處理裝置330可以只包含一個接收器類比前端410。本領域的普通技術人員可以理解到,本發明並不限定第一電極321或第二電極322以甚麼組態連接到接收器類比前端410。換言之,該觸控處理裝置330所包含的接收器類比前端410之數量將小於或等於該第一電極321與該第二電極322的總和。 The receiver analog front end 410 is used to connect the aforementioned first electrode 321 or second electrode 322. In one embodiment, each of the first electrodes 321 and each of the second electrodes 322 are coupled to a receiver analog front end 410. In another embodiment, the plurality of first electrodes 321 are grouped, and the plurality of second electrodes 322 are grouped. Each group of first electrodes 321 corresponds to one receiver analog front end 410, and each group of second electrodes 322 Corresponds to another receiver analogy front end 410. Each receiver analog receives the signals of the first electrode 321 or the second electrode 322 in the group in turn. In another embodiment, a set of first electrodes 321 and a set of second electrodes 322 correspond to a receiver analog front end 410. The receiver analog front end 410 may firstly connect the first electrode 321 in the group of the first electrodes 321 in turn, and then connect the second electrodes 322 in the group of the second electrodes 322 in turn. Conversely, the receiver analog front end 410 may firstly connect the second electrode 322 in the group of the second electrodes 322 in turn, and then connect the first electrodes 321 in the group of the first electrodes 321 in turn. In an embodiment, the The touch processing device 330 can include only one receiver analog front end 410. One of ordinary skill in the art will appreciate that the present invention does not limit the configuration of the first electrode 321 or the second electrode 322 to the receiver analog front end 410. In other words, the number of receiver analog front ends 410 included in the touch processing device 330 will be less than or equal to the sum of the first electrode 321 and the second electrode 322.
該接收器類比前端410可以進行某些濾波、放大、或其他的類比信號處理。在某些實施例中,該接收器類比前端410可以接收兩條相鄰第一電極321的差值,或是兩條相鄰第二電極322的差值。在一實施例中,每一個接收器類比前端410可以輸出到一個解調變器420。在另一實施例中,可以每N個接收器類比前端410輸出到一個解調變器420。在更一實施例中,可以每一個接收器類比前端410輸出到N個解調變器420,其中上述的N為大於或等於一的正整數。在某些實施例中,該觸控處理裝置330可以只包含一個解調變器420。本領域的普通技術人員可以理解到,本發明並不限定接收器類比前端410以甚麼組態連接到解調變器420。 The receiver analog front end 410 can perform some filtering, amplification, or other analog signal processing. In some embodiments, the receiver analog front end 410 can receive the difference between two adjacent first electrodes 321 or the difference between two adjacent second electrodes 322. In an embodiment, each receiver analog front end 410 can output to a demodulation transformer 420. In another embodiment, each of the N receiver analog front ends 410 can be output to a demodulation transformer 420. In a further embodiment, each receiver analog output 410 can be output to N demodulators 420, where N is a positive integer greater than or equal to one. In some embodiments, the touch processing device 330 can include only one demodulator 420. One of ordinary skill in the art will appreciate that the present invention does not limit the configuration of the receiver analog front end 410 to the demodulation transformer 420.
解調變器420係用於解調變出該發信器100所發出的電信號,用於得出相應的第一電極321或第二電極322所接收的信號當中,各個頻率的資訊與信號強度的資訊。比方說,該發信器100可以發出三種頻率的信號。該解調變器420可以用於解出這三種頻率的信號強度,每兩種頻率的信號強度比例,以及全部的信號強度。在本發明當中,可以使用類比或數位的方式來實施解調變器420,以下分為三個實施例來解說。 The demodulator 420 is configured to demodulate and generate an electrical signal emitted by the transmitter 100 for obtaining information and signals of respective frequencies among the signals received by the corresponding first electrode 321 or the second electrode 322. Strength information. For example, the transmitter 100 can emit signals of three frequencies. The demodulator 420 can be used to resolve the signal strength of the three frequencies, the signal strength ratio for each of the two frequencies, and the overall signal strength. In the present invention, the demodulation transformer 420 can be implemented in an analog or digital manner, which is divided into three embodiments to illustrate.
請參考第五圖所示,其為根據本發明一實施例的一類比解調變器420的一部份方塊示意圖。可以使用單一個第五圖所示的類比解調變器來解調變每一個頻率。也可以使用多個第五圖所示的類比解調變器來解調 變多個頻率,比方說當該發信器100可以發出N種頻率時,即時用N個第五圖所示的類比解調變器來解調每一個頻率。信號產生器510係用於產生相應頻率的信號。 Please refer to the fifth figure, which is a partial block diagram of an analog demodulator 420 according to an embodiment of the invention. An analog demodulator as shown in the fifth figure can be used to demodulate each frequency. It is also possible to demodulate using multiple analog demodulators as shown in the fifth figure. Changing a plurality of frequencies, for example, when the transmitter 100 can emit N kinds of frequencies, immediately demodulate each frequency with N analog demodulators shown in the fifth figure. Signal generator 510 is used to generate signals of corresponding frequencies.
從該接收器類比前端410所接收的類比信號,可以經由可選的放大器,再分別送到兩個混波器520I與520Q。混波器520I接收該信號產生器510所輸出的餘弦信號,混波器520Q接收該信號產生器510所輸出的正弦信號。兩個混波器520I與520Q所輸出的混波信號將分別輸出到積分器530I與530Q。接著,積分完畢的信號將由積分器530I與530Q分別送往平方器540I與540Q。最後,平方器540I與540Q的輸出將由總和之均方根器550先加總後,再求均方根。如此一來,就可以得到相應於該信號產生器510所產生之信號頻率的信號強度。當取得所有頻率的信號強度之後,即可以產生每兩個頻率的信號強度比例,以及總信號強度。 The analog signal received from the receiver analog front end 410 can be sent to the two mixers 520I and 520Q via an optional amplifier. The mixer 520I receives the cosine signal output by the signal generator 510, and the mixer 520Q receives the sinusoidal signal output by the signal generator 510. The mixed signals output by the two mixers 520I and 520Q are output to the integrators 530I and 530Q, respectively. Next, the integrated signal will be sent by the integrators 530I and 530Q to the squarers 540I and 540Q, respectively. Finally, the outputs of the squarers 540I and 540Q will be summed by the rms 550 of the sum before the root mean square. In this way, the signal strength corresponding to the frequency of the signal generated by the signal generator 510 can be obtained. When the signal strengths of all frequencies are obtained, the ratio of the signal strength for each of the two frequencies, as well as the total signal strength, can be generated.
請參考第六圖所示,其為根據本發明一實施例的一數位解調變器420的一部份方塊示意圖。和第五圖所示的實施例相比,第六圖所示的實施例係採用數位的方式來進行。同樣地,可以使用單一個第六圖所示的數位解調變器來解調變每一個頻率。也可以使用多個第六圖所示的數位解調變器來解調變多個頻率,比方說當該發信器100可以發出N種頻率時,即時用N個第六圖所示的數位解調變器來解調每一個頻率。信號產生器610係用於產生相應頻率的數位信號。 Please refer to the sixth figure, which is a partial block diagram of a digital demodulation transformer 420 according to an embodiment of the invention. Compared with the embodiment shown in the fifth figure, the embodiment shown in the sixth figure is performed in a digital manner. Similarly, a digital demodulator as shown in the sixth figure can be used to demodulate each frequency. It is also possible to use a plurality of digital demodulation transformers shown in the sixth figure to demodulate a plurality of frequencies, for example, when the transmitter 100 can emit N kinds of frequencies, the N digits shown in the sixth figure are immediately used. Demodulation transformer to demodulate each frequency. Signal generator 610 is used to generate digital signals of corresponding frequencies.
從該接收器類比前端410所接收的類比信號,可以經由可選的放大器600,再送往類比數位轉換器605。該類比數位轉換器605的取樣頻率將相應於該信號產生器610所發出信號的頻率。換言之,當類比數位轉換 器605進行一次取樣時,該信號產生器610將分別送出一次信號到兩個混波器620I與620Q。混波器620I接收該信號產生器610所輸出的餘弦信號,混波器620Q接收該信號產生器610所輸出的正弦信號。兩個混波器620I與620Q所輸出的混波信號將分別輸出到加法積分器630I與630Q。接著,加法積分完畢的信號將由加法積分器630I與630Q分別送往平方器640I與640Q。最後,平方器640I與640Q的輸出將由總和之均方根器650先加總後,再求均方根。如此一來,就可以得到相應於該信號產生器610所產生之信號頻率的信號強度。當取得所有頻率的信號強度之後,即可以產生每兩個頻率的信號強度比例,以及總信號強度。 The analog signal received from the receiver analog front end 410 can be sent to the analog digital converter 605 via the optional amplifier 600. The sampling frequency of the analog to digital converter 605 will correspond to the frequency of the signal emitted by the signal generator 610. In other words, when analog to digital conversion When the controller 605 performs one sampling, the signal generator 610 will send a signal to the two mixers 620I and 620Q, respectively. The mixer 620I receives the cosine signal output by the signal generator 610, and the mixer 620Q receives the sinusoidal signal output by the signal generator 610. The mixed signals output by the two mixers 620I and 620Q are output to the adder integrators 630I and 630Q, respectively. Next, the addition-completed signal is sent by the adder integrators 630I and 630Q to the squarers 640I and 640Q, respectively. Finally, the outputs of the squarers 640I and 640Q will be summed by the rms 650 of the sum, and then the root mean square. In this way, the signal strength corresponding to the signal frequency generated by the signal generator 610 can be obtained. When the signal strengths of all frequencies are obtained, the ratio of the signal strength for each of the two frequencies, as well as the total signal strength, can be generated.
請參考第七圖所示,其為根據本發明一實施例的一數位解調變器420的一部份方塊示意圖。第七圖所示的實施例係採用數位的方式來進行,可以使用單一個第七圖所示的數位解調變器來解調變出每一個頻率。從該接收器類比前端410所接收的類比信號,可以經由可選的放大器700,再送往類比數位轉換器710。接著,再將輸出的數位信號送往傅立葉轉換器720,即可以解調變出頻域上各個頻率的信號強度。上述的傅立葉轉換器可以是數位化的快速傅立葉轉換器。 Please refer to the seventh figure, which is a partial block diagram of a digital demodulator 420 according to an embodiment of the invention. The embodiment shown in the seventh figure is performed in a digital manner, and a digital demodulator as shown in the seventh figure can be used to demodulate and change each frequency. The analog signal received from the receiver analog front end 410 can be sent to the analog digital converter 710 via the optional amplifier 700. Then, the output digital signal is sent to the Fourier converter 720, and the signal strength of each frequency in the frequency domain can be demodulated. The above-described Fourier converter may be a digitalized fast Fourier converter.
請參考第八圖所示,其為根據第七圖之數位解調變器420所解調變之一結果示意圖。第八圖所示的結果僅僅為一示例,除了使用圖表的方式表示外,也可以使用各式各樣的資料結構來儲存解調變的結果。第八圖的橫軸為信號頻率,其豎軸為信號強度。可以從傅立葉轉換器720的計算結果得到相應於該發信器100所可能發出的N種頻率的信號強度。在一實施例中,可以對信號強度設定一門檻值。大於該門檻值的信號強度才認為 信號中含有其相應的頻率。當得出各個頻率的信號強度之後,也就可以進而計算出每兩個頻率的信號強度比例,以及總信號強度。 Please refer to the eighth figure, which is a schematic diagram of the result of demodulation of the digital demodulator 420 according to the seventh figure. The results shown in the eighth figure are only an example, and in addition to the use of a graphical representation, a variety of data structures can be used to store the results of the demodulation. The horizontal axis of the eighth graph is the signal frequency, and the vertical axis is the signal strength. The signal strength corresponding to the N frequencies that may be emitted by the transmitter 100 can be obtained from the calculation result of the Fourier converter 720. In an embodiment, a threshold value can be set for the signal strength. Signal strength greater than the threshold is considered The signal contains its corresponding frequency. After the signal strengths of the respective frequencies are obtained, the signal strength ratio for each of the two frequencies and the total signal strength can be calculated.
儘管第五圖至第七圖所舉出的三個解調變器420之實施例可以實作在第三圖所示的觸控處理裝置330當中,但本發明並不限定該觸控處理裝置330必須要實作出解調變器420的所有步驟。在某些實施例當中,解調變器420的某些步驟可以交由主機340來執行。另外值得注意的是,儘管數位解調變器420之實施例可以使用特定的硬體來實作,但本領域的普通技術人員可以理解到,也可以使用軟體或韌體的方式來實施數位解調變器420的各個元器件。舉例來說,混波器可以藉由乘法來實現,加法積分器可以藉由加法來實現,而乘法與加法是一般處理器最常見的運算指令。 Although the embodiments of the three demodulation transformers 420 illustrated in the fifth to seventh embodiments can be implemented in the touch processing device 330 shown in the third embodiment, the present invention is not limited to the touch processing device. All steps of the demodulator 420 must be implemented 330. In some embodiments, certain steps of demodulator 420 may be performed by host 340. It is also worth noting that although embodiments of the digital demodulation 420 can be implemented using specific hardware, one of ordinary skill in the art will appreciate that the digital solution can also be implemented using software or firmware. The various components of the modulator 420. For example, a mixer can be implemented by multiplication, an addition integrator can be implemented by addition, and multiplication and addition are the most common operational instructions of a general processor.
請參考第九A圖所示,其為根據本發明一實施例的一感測發信器方法的一流程示意圖。在步驟910當中,計算每一個第一電極與第二電極所接收之該電信號的總信號強度。步驟910可以利用第三圖到第七圖所示的實施例來實施。接著,在步驟920當中,根據計算出的總信號強度,計算發信器與觸控面板的一相對位置。在一實施例中,可以認為該發信器的位置相應於具有最大總信號強度的第一電極與第二電極。在另一實施例中,可以認為該發信器的位置相應於具有最大總信號強度的相鄰第一電極與相鄰第二電極的質心,其質量的大小係相應於信號的強度。最後,在可選的步驟930當中,可以根據發信器所發出的電信號資訊,計算該發信器狀態。本領域的普通技術人員可以理解到,步驟930的實作可以根據前述的各表來進行回推。 Please refer to FIG. 9A, which is a schematic flowchart of a method for sensing a transmitter according to an embodiment of the invention. In step 910, a total signal strength of the electrical signal received by each of the first electrode and the second electrode is calculated. Step 910 can be implemented using the embodiments shown in the third to seventh figures. Next, in step 920, a relative position of the sender and the touch panel is calculated based on the calculated total signal strength. In an embodiment, the position of the transmitter can be considered to correspond to the first electrode and the second electrode having the greatest total signal strength. In another embodiment, the position of the transmitter can be considered to correspond to the centroid of the adjacent first electrode and the adjacent second electrode having the largest total signal strength, the magnitude of which corresponds to the strength of the signal. Finally, in optional step 930, the sender status can be calculated based on the electrical signal information sent by the sender. One of ordinary skill in the art will appreciate that the implementation of step 930 can be pushed back according to the various tables described above.
請參考第九B圖,其為根據本發明一實施例的一感測發信器 方法的一流程示意圖。在步驟905當中,可以計算每一個第一電極或第二電極所接收之該電信號的總信號強度。當解調變出第一電極或第二電極所接收之該電信號之後,就可以得知發信器所發出信號的頻率為何。比方說,發信器若發出第一頻率與第二頻率,而未發出第三頻率時,則在步驟915所執行的另一電極的總信號強度之計算過程中,就可以省略掉第三頻率的計算。如果採用第七圖所示的數位解調變器,則不須採用第九B圖所示的方法。但如果採用第五圖或第六圖所述的解調變器,而且解調變器的數量不足以一次對所有頻率進行掃描時,此種做法可以節省一些時間與計算資源。而且,如果當第一電極或第二電極的計算之後,並沒有發現發信器所發出的電信號,則可以省略執行步驟915。反之,當發現發信器所發出的電信號之後,則步驟915可以根據所接收之該電信號的各頻率信號強度,計算另一電極所接收之該電信號的總信號強度。其餘的步驟920與930可以適用第九A圖的實施例之說明。 Please refer to FIG. BB, which is a sensing transmitter according to an embodiment of the invention. A schematic diagram of a process. In step 905, the total signal strength of the electrical signal received by each of the first or second electrodes can be calculated. After the demodulation changes the electrical signal received by the first electrode or the second electrode, the frequency of the signal sent by the transmitter can be known. For example, if the transmitter sends the first frequency and the second frequency without emitting the third frequency, the third frequency can be omitted during the calculation of the total signal strength of the other electrode performed in step 915. Calculation. If the digital demodulator shown in the seventh figure is used, the method shown in FIG. However, if the demodulator described in Figure 5 or Figure 6 is used and the number of demodulators is not sufficient to scan all frequencies at once, this can save some time and computational resources. Moreover, if the electrical signal emitted by the transmitter is not found after the calculation of the first electrode or the second electrode, step 915 may be omitted. Conversely, after the electrical signal sent by the transmitter is found, step 915 can calculate the total signal strength of the electrical signal received by the other electrode based on the received frequency signal strength of the electrical signal. The remaining steps 920 and 930 may be applied to the description of the embodiment of Figure IX.
要注意的是,在第九A圖與第九B圖的流程當中,若沒有提到步驟之間的因果關係或順序,則本發明並不限定這些步驟所執行的先後順序。另外,在步驟905、910、915當中提到了計算每一個第一電極與/或第二電極所接收之該電信號的總信號強度。在一實施例中,若該觸控系統300當中只包含單一個發信器100時,第九A圖與第九B圖的流程就可以修改為,當計算到至少一個第一電極與第二電極所接收之該電信號的總強度大於一門檻值時,即可以執行步驟920與步驟930。 It is to be noted that, in the flow of the ninth A and ninth B, if the causal relationship or order between the steps is not mentioned, the present invention does not limit the order in which the steps are performed. Additionally, it is mentioned in steps 905, 910, 915 that the total signal strength of the electrical signal received by each of the first and/or second electrodes is calculated. In an embodiment, if only one single transmitter 100 is included in the touch system 300, the processes of the ninth A and ninth B diagrams may be modified to calculate at least one first electrode and the second Step 920 and step 930 may be performed when the total intensity of the electrical signal received by the electrode is greater than a threshold.
在一實施例中,本發明提供一種偵測近接於一觸控面板的一發信器之方法。該發信器發送一電信號,該電信號係由複數個頻率混合而 成。該觸控面板包含複數個第一電極與複數個第二電極以及其重疊處所形成的複數個感測點。該方法包含:針對每一個該第一電極與每一個該第二電極,計算其所接收之該電信號的總信號強度;以及根據所計算出之每一個該第一電極與每一個該第二電極所接收之該電信號的總信號強度,計算該發信器與該觸控面板的一相對位置。 In one embodiment, the present invention provides a method of detecting a transmitter that is in proximity to a touch panel. The transmitter sends an electrical signal that is mixed by a plurality of frequencies to make. The touch panel includes a plurality of first electrodes and a plurality of second electrodes and a plurality of sensing points formed by the overlapping portions thereof. The method includes calculating, for each of the first electrode and each of the second electrodes, a total signal strength of the electrical signal received thereby; and calculating, according to each of the first electrodes and each of the second The total signal strength of the electrical signal received by the electrode calculates a relative position of the transmitter and the touch panel.
上述之計算其所接收之該電信號的總信號強度的步驟更包含:計算出所接收之該電信號當中,相應於該複數個頻率中每一個頻率的信號之強度;以及將所計算出的相應於該複數個頻率中每一個頻率的信號之強度全部加總。在一實施例中,上述之計算出相應於該複數個頻率中某一個頻率的信號之強度的步驟更包含:將一同相信號與所接收信號進行混合以產生一同相類比信號;將一正交信號與所接收信號進行混合以產生一正交類比信號,其中該同相信號與該正交信號的頻率為該某一個頻率;將該同相類比信號進行積分以產生一同相積分信號;將該正交類比信號進行積分以產生一正交積分信號;以及計算該同相積分信號之平方與該正交積分信號之平方的總和之均方根,以得到相應於該某一個頻率的信號之強度。在另一實施例中,上述之計算出相應於該複數個頻率中某一個頻率的信號之強度的步驟更包含:將所接收信號進行類比數位轉換,以產生一數位接收信號;將一同相信號與該數位接收信號進行混合以產生一同相數位信號;將一正交信號與該數位接收信號進行混合以產生一正交數位信號,其中該同相信號與該正交信號的頻率為該某一個頻率;將該同相數位信號進行加法積分以產生一同相積分信號;將該正交數位信號進行加法積分以產生一正交積分信號;以及計算該同相積分信號之平方與該正交積分信號 之平方的總和之均方根,以得到相應於該某一個頻率的信號之強度。上述之類比數位轉換的頻率相應於該某一個頻率。在更一實施例中,上述之計算出相應於該複數個頻率中某一個頻率的信號之強度的步驟更包含:將所接收信號進行類比數位轉換,以產生一數位接收信號;以及將該數位接收信號進行傅立葉轉換,以產生對應於該複數個頻率中每一個頻率的信號之強度。 The step of calculating the total signal strength of the electrical signal received by the method further comprises: calculating an intensity of a signal corresponding to each of the plurality of frequencies among the received electrical signals; and calculating the corresponding The intensity of the signal for each of the plurality of frequencies is summed. In one embodiment, the step of calculating the strength of the signal corresponding to one of the plurality of frequencies further comprises: mixing an in-phase signal with the received signal to generate an in-phase analog signal; The signal is mixed with the received signal to generate a quadrature analog signal, wherein the frequency of the in-phase signal and the quadrature signal is the one frequency; the in-phase analog signal is integrated to generate an in-phase integrated signal; The analog signal is integrated to generate an orthogonal integrated signal; and the root mean square of the sum of the square of the in-phase integrated signal and the square of the orthogonal integrated signal is calculated to obtain the strength of the signal corresponding to the certain frequency. In another embodiment, the step of calculating the strength of the signal corresponding to one of the plurality of frequencies further comprises: analogically converting the received signal to generate a digital received signal; and outputting an in-phase signal Mixing with the digital received signal to generate an in-phase digital signal; mixing a quadrature signal with the digital received signal to generate an orthogonal digital signal, wherein the frequency of the in-phase signal and the orthogonal signal is the one Frequency; integrating the in-phase digital signal to generate an in-phase integrated signal; adding and integrating the orthogonal digital signal to generate an orthogonal integrated signal; and calculating a square of the in-phase integrated signal and the orthogonal integrated signal The root mean square of the sum of the squares to obtain the strength of the signal corresponding to the certain frequency. The frequency of the analog-to-digital conversion described above corresponds to the certain frequency. In still another embodiment, the step of calculating the strength of the signal corresponding to one of the plurality of frequencies further comprises: analogically converting the received signal to generate a digital received signal; and digitizing the digital signal The received signal is Fourier transformed to produce an intensity corresponding to each of the plurality of frequencies.
該針對每一個該第一電極與每一個該第二電極,計算其所接收之該電信號的總信號強度的步驟更包含:計算每一個該第一電極所接收之該電信號的總信號強度;根據至少一個該第一電極所接收之該電信號,計算出相應於該複數個頻率中每一個頻率的信號之強度,以得出該發信器所混合的一組頻率;以及計算該第二電極所接收之該電信號當中,相應於該組頻率中每一個頻率的信號強度之總信號強度。其中相應於該組頻率中每一個頻率的信號強度均大於一門檻值。 The step of calculating the total signal strength of the received electrical signal for each of the first electrode and each of the second electrodes further comprises: calculating a total signal strength of the electrical signal received by each of the first electrodes And calculating, according to the at least one electrical signal received by the first electrode, an intensity of a signal corresponding to each of the plurality of frequencies to obtain a set of frequencies mixed by the transmitter; and calculating the first Among the electrical signals received by the two electrodes, the total signal strength corresponding to the signal strength of each of the set of frequencies. The signal strength corresponding to each of the frequencies in the set of frequencies is greater than a threshold.
在一實施例中,在計算某一個該第一電極所接收之該電信號的總信號強度的同時,計算某一個該第二電極所接收之該電信號的總信號強度。 In one embodiment, the total signal strength of the electrical signal received by a certain one of the second electrodes is calculated while calculating the total signal strength of the electrical signal received by the one of the first electrodes.
該發信器根據一發信器狀態發送該電信號,該方法更包含根據該電信號的資訊計算該發信器狀態。上述之計算該發信器狀態,係根據該電信號的下列資訊的其中之一或其任意組合:該電信號所混合的該複數個頻率中某一個頻率之信號強度;該電信號的總信號強度;以及該電信號所混合的該複數個頻率中之一第一頻率與一第二頻率之信號強度比例。在一實施例中,該電信號的總信號強度係相應於該發信器內具有多元狀態的 感測器之狀態。在另一實施例中,該電信號所混合之該第一頻率與該第二頻率的信號強度係相應於該發信器內具有多元狀態的感測器之狀態。在更一實施例中,該電信號的信號強度係相應於該發信器內具有多元狀態的第一感測器之狀態,其中該電信號所混合之該第一頻率與該第二頻率的信號強度比例係相應於該發信器內具有多元狀態的第二感測器之狀態。 The transmitter transmits the electrical signal according to a transmitter status, and the method further comprises calculating the transmitter status based on the information of the electrical signal. Calculating the state of the transmitter as described above, based on one or any combination of the following information of the electrical signal: a signal strength of one of the plurality of frequencies mixed by the electrical signal; a total signal of the electrical signal An intensity; and a ratio of a signal strength of the first frequency to the second frequency of the plurality of frequencies mixed by the electrical signal. In one embodiment, the total signal strength of the electrical signal corresponds to a multivariate state within the transmitter The state of the sensor. In another embodiment, the signal strength of the first frequency and the second frequency mixed by the electrical signal corresponds to a state of a sensor having a multi-state in the transmitter. In a further embodiment, the signal strength of the electrical signal corresponds to a state of the first sensor having a multivariate state in the transmitter, wherein the first frequency and the second frequency are mixed by the electrical signal The signal strength ratio corresponds to the state of the second sensor having a multivariate state within the transmitter.
在一實施例中,當該發信器包含複數個感測器時,該發信器狀態的可能狀態數量為每一該複數個感測器的可能狀態數量的總和。在另一實施例中,該發信器狀態表示為每一該複數個感測器的狀態表示的任意組合之一。 In one embodiment, when the transmitter includes a plurality of sensors, the number of possible states of the transmitter state is the sum of the number of possible states for each of the plurality of sensors. In another embodiment, the transmitter status is represented as one of any combination of state representations for each of the plurality of sensors.
本發明提供一種觸控處理裝置,用於偵測近接於一觸控面板的一發信器。該發信器發送一電信號,該電信號係由複數個頻率混合而成。該觸控面板包含複數個第一電極與複數個第二電極以及其重疊處所形成的複數個感測點。該觸控處理裝置係用於:針對每一個該第一電極與每一個該第二電極,計算其所接收之該電信號的總信號強度;以及根據所計算出之每一個該第一電極與每一個該第二電極所接收之該電信號的總信號強度,計算該發信器與該觸控面板的一相對位置。 The present invention provides a touch processing device for detecting a transmitter that is closely connected to a touch panel. The transmitter transmits an electrical signal that is a mixture of a plurality of frequencies. The touch panel includes a plurality of first electrodes and a plurality of second electrodes and a plurality of sensing points formed by the overlapping portions thereof. The touch processing device is configured to: calculate, for each of the first electrodes and each of the second electrodes, a total signal strength of the electrical signal received by the first electrode; and each of the first electrodes and the calculated Calculating a relative position of the transmitter and the touch panel for each of the electrical signals received by the second electrode.
上述之計算其所接收之該電信號的總信號強度的步驟更包含:計算出所接收信號當中,相應於該複數個頻率中每一個頻率的信號之強度;以及將所計算出的相應於該複數個頻率中每一個頻率的信號之強度全部加總。在一實施例中,該觸控處理裝置更包含一解調變器用於上述之計算出相應於該複數個頻率中某一個頻率的信號之強度。該解調變器包含:一信號產生器,用於產生一同相信號與一正交信號,其中該同相信號 與該正交信號的頻率為該某一個頻率;至少一混波器,用於將該同相信號與所接收信號進行混合以產生一同相類比信號,以及將該正交信號與所接收信號進行混合以產生一正交類比信號;至少一積分器,用於將該同相類比信號進行積分以產生一同相積分信號,以及將將該正交類比信號進行積分以產生一正交積分信號;至少一平方器,用於計算該同相積分信號之平方與該正交積分信號之平方;以及至少一總和之均方根器,用於計算該同相積分信號之平方與該正交積分信號之平方的總和之均方根,以得到相應於該某一個該頻率的信號強度。在另一實施例中,該觸控處理裝置更包含一解調變器用於上述之計算出相應於該複數個頻率中某一個頻率的信號之強度。該解調變器包含:一類比數位轉換器,用於將所接收信號進行類比數位轉換,以產生一數位接收信號;一信號產生器,用於產生一同相信號與一正交信號,其中該同相信號與該正交信號的頻率為該某一個頻率;至少一混波器,用於將該同相信號與該數位接收信號進行混合以產生一同相數位信號,以及將該正交信號與該數位接收信號進行混合以產生一正交數位信號;至少一加法積分器,用於將該同相數位信號進行加法積分以產生一同相積分信號,以及將該正交數位信號進行加法積分以產生一正交積分信號;至少一平方器,用於計算該同相積分信號之平方與該正交積分信號之平方;以及一總和之均方根器,用於計算該同相積分信號之平方與該正交積分信號之平方的總和之均方根,以得到相應於該某一個頻率的信號強度。在更一實施例中,該觸控處理裝置更包含一解調變器用於上述之計算出相應於該複數個頻率中每一個頻率的信號之強度。該解調變器包含:一類比數位轉換器,用於將所接收信號進行類比數位轉換,以產生一數位接 收信號;以及一傅立葉轉換器,用於將該數位接收信號進行傅立葉轉換,以產生對應於該複數個頻率中每一個頻率的信號之強度。 The step of calculating the total signal strength of the electrical signal received by the method further comprises: calculating an intensity of a signal corresponding to each of the plurality of frequencies among the received signals; and calculating the corresponding corresponding to the complex number The strengths of the signals for each of the frequencies are summed up. In one embodiment, the touch processing device further includes a demodulator for calculating the intensity of the signal corresponding to one of the plurality of frequencies. The demodulator includes: a signal generator for generating an in-phase signal and a quadrature signal, wherein the in-phase signal And the frequency of the orthogonal signal is the certain frequency; at least one mixer is configured to mix the in-phase signal with the received signal to generate an in-phase analog signal, and perform the orthogonal signal and the received signal Mixing to generate an orthogonal analog signal; at least one integrator for integrating the in-phase analog signal to generate an in-phase integrated signal, and integrating the orthogonal analog signal to generate an orthogonal integrated signal; at least one a squarer for calculating a square of the in-phase integrated signal and a square of the orthogonal integrated signal; and at least one sum rms square for calculating a sum of a square of the in-phase integrated signal and a square of the orthogonal integrated signal The root mean square to obtain the signal strength corresponding to the one of the frequencies. In another embodiment, the touch processing device further includes a demodulator for calculating the intensity of the signal corresponding to one of the plurality of frequencies. The demodulator includes: an analog-to-digital converter for analog-to-digital conversion of a received signal to generate a digital received signal; a signal generator for generating an in-phase signal and a quadrature signal, wherein The frequency of the in-phase signal and the orthogonal signal is the one frequency; at least one mixer is configured to mix the in-phase signal with the digital received signal to generate an in-phase digital signal, and the orthogonal signal The digital received signal is mixed to generate an orthogonal digital signal; at least one additive integrator is configured to add and integrate the in-phase digital signal to generate an in-phase integrated signal, and add and integrate the orthogonal digital signal to generate a An orthogonal integrated signal; at least one squarer for calculating a square of the in-phase integrated signal and a square of the orthogonal integrated signal; and a sum rms square for calculating a square of the in-phase integrated signal and the orthogonal The root mean square of the sum of the squares of the integrated signals to obtain the signal strength corresponding to the one frequency. In a further embodiment, the touch processing device further includes a demodulator for calculating the intensity of the signal corresponding to each of the plurality of frequencies. The demodulator includes: an analog-to-digital converter for analog-to-digital conversion of the received signal to generate a digital bit And receiving a signal; and a Fourier converter for performing a Fourier transform on the digital received signal to generate an intensity of a signal corresponding to each of the plurality of frequencies.
在一實施例中,針對每一個該第一電極與每一個該第二電極,計算其所接收之該電信號的總信號強度的步驟更包含:計算每一個該第一電極所接收之該電信號的總信號強度;根據至少一個該第一電極所接收之該電信號,計算出相應於該複數個頻率中每一個頻率的信號之強度,以得出該發信器所混合的一組頻率;以及計算該第二電極所接收之該電信號當中,相應於該組頻率中每一個頻率的信號強度之總信號強度。其中相應於該組頻率中每一個頻率的信號強度均大於一門檻值。 In an embodiment, the step of calculating the total signal strength of the received electrical signal for each of the first electrode and each of the second electrodes further comprises: calculating the electrical power received by each of the first electrodes a total signal strength of the signal; calculating, according to the at least one electrical signal received by the first electrode, an intensity of a signal corresponding to each of the plurality of frequencies to obtain a set of frequencies mixed by the transmitter And calculating a total signal strength of the signal strength corresponding to each of the set of frequencies among the electrical signals received by the second electrode. The signal strength corresponding to each of the frequencies in the set of frequencies is greater than a threshold.
在計算某一個該第一電極所接收之該電信號的總信號強度的同時,計算某一個該第二電極所接收之該電信號的總信號強度。 Calculating a total signal strength of the electrical signal received by a certain one of the second electrodes while calculating a total signal strength of the electrical signal received by the one of the first electrodes.
該發信器根據一發信器狀態發送該電信號,該觸控處理裝置更包含根據該電信號的資訊計算該發信器狀態。其中上述之計算該發信器狀態,係根據該電信號的下列資訊的其中之一或其任意組合:該電信號所混合的該複數個頻率中某一個頻率之信號強度;該電信號的總信號強度;以及該電信號所混合的該複數個頻率中之一第一頻率與一第二頻率之信號強度比例。 The transmitter sends the electrical signal according to a transmitter status, and the touch processing device further includes calculating the transmitter status based on the information of the electrical signal. Wherein the calculating the state of the transmitter is based on one or any combination of the following information of the electrical signal: a signal strength of one of the plurality of frequencies mixed by the electrical signal; a total of the electrical signal a signal strength; and a ratio of a signal strength of the first frequency to the second frequency of the plurality of frequencies mixed by the electrical signal.
在一實施例中,該電信號的總信號強度係相應於該發信器內具有多元狀態的感測器之狀態。在另一實施例中,該電信號所混合之該第一頻率與該第二頻率的信號強度係相應於該發信器內具有多元狀態的感測器之狀態。在更一實施例中,該電信號的信號強度係相應於該發信器內具有多元狀態的第一感測器之狀態,其中該電信號所混合之該第一頻率與該 第二頻率的信號強度比例係相應於該發信器內具有多元狀態的第二感測器之狀態。 In one embodiment, the total signal strength of the electrical signal corresponds to the state of the sensor having a multivariate state within the transmitter. In another embodiment, the signal strength of the first frequency and the second frequency mixed by the electrical signal corresponds to a state of a sensor having a multi-state in the transmitter. In a further embodiment, the signal strength of the electrical signal corresponds to a state of the first sensor having a multivariate state in the transmitter, wherein the first frequency mixed by the electrical signal is The signal strength ratio of the second frequency corresponds to the state of the second sensor having a multivariate state within the transmitter.
在一實施例中,當該發信器包含複數個感測器時,該發信器狀態的可能狀態數量為每一該複數個感測器的可能狀態數量的總和。在另一實施例中,當該發信器包含複數個感測器時,該發信器狀態表示為每一該複數個感測器的狀態表示的任意組合之一。 In one embodiment, when the transmitter includes a plurality of sensors, the number of possible states of the transmitter state is the sum of the number of possible states for each of the plurality of sensors. In another embodiment, when the transmitter includes a plurality of sensors, the transmitter state is represented as one of any combination of state representations for each of the plurality of sensors.
本發明提供一種觸控處理系統,用於偵測近接於一觸控面板的一發信器。該發信器發送一電信號,該電信號係由複數個頻率混合而成。該觸控處理系統包含:該觸控面板,包含複數個第一電極與複數個第二電極以及其重疊處所形成的複數個感測點;以及一觸控處理裝置,用於:針對每一個該第一電極與每一個該第二電極,計算其所接收之該電信號的總信號強度;以及根據所計算出之每一個該第一電極與每一個該第二電極所接收之該電信號的總信號強度,計算該發信器與該觸控面板的一相對位置。 The present invention provides a touch processing system for detecting a transmitter that is closely connected to a touch panel. The transmitter transmits an electrical signal that is a mixture of a plurality of frequencies. The touch processing system includes: the touch panel, comprising: a plurality of first electrodes and a plurality of second electrodes; and a plurality of sensing points formed by the overlapping portions thereof; and a touch processing device, configured to: for each of the a first electrode and each of the second electrodes, calculating a total signal strength of the electrical signal received by the first electrode; and calculating, according to the calculated electrical signal received by each of the first electrode and each of the second electrodes The total signal strength is calculated as a relative position of the transmitter and the touch panel.
總上所述,本發明的主要精神之一,在於利用偵測第一電極與第二電極所接收之該電信號中的相應於多個頻率的信號強度,進而計算出發信器與觸控面板之間的一相對位置,還可以由回推該發信器狀態得知該發信器上各個感測器的狀態。此外,本發明還可以利用電容式觸控面板的觸控電極,使得同一個電容式觸控面板可以進行電容式的偵測,也可以進行發信器的偵測。換言之,利用同一個電容式觸控面板即可以進行手指偵測、手掌偵測,也可以進行發信器式觸控筆的偵測。 In summary, one of the main spirits of the present invention is to detect a signal strength corresponding to a plurality of frequencies in the electrical signal received by the first electrode and the second electrode, thereby calculating a starter and a touch panel. A relative position between the transmitters can also be used to retrieve the status of the various sensors on the transmitter. In addition, the present invention can also utilize the touch electrodes of the capacitive touch panel, so that the same capacitive touch panel can perform capacitive detection and can also detect the transmitter. In other words, the same capacitive touch panel can be used for finger detection, palm detection, and detection of a transmitter-type stylus.
請回到第三圖所示,在第三圖所示的實施例當中,觸控面板320係形成於一基板,而該觸控面板320可以為觸控螢幕,本發明並不限定 觸控面板320的形式。在某些實施例中,該觸控面板可以是內嵌式(in-cell)的觸控螢幕。請參考第十A圖至第十F圖所示,其為本發明實施例的一觸控顯示裝置1000之結構示意圖。觸控顯示裝置1000包含一控制單元1020、一觸控感測單元1030與一顯示像素單元1040。 Returning to the third embodiment, in the embodiment shown in FIG. 3 , the touch panel 320 is formed on a substrate, and the touch panel 320 can be a touch screen. The form of the touch panel 320. In some embodiments, the touch panel can be an in-cell touch screen. Please refer to FIG. 10 to FIG. 10F , which are schematic structural diagrams of a touch display device 1000 according to an embodiment of the present invention. The touch display device 1000 includes a control unit 1020, a touch sensing unit 1030 and a display pixel unit 1040.
觸控感測單元1030包含複數條觸控驅動電極1032與複數條觸控感測電極1034。在一實施例中,上述的觸控驅動電極1032可以是第三圖所示實施例的第一電極321,觸控感測電極1034可以是第三圖所示實施例的第二電極322。控制單元1020輸出驅動訊號至複數條觸控驅動電極1032,及自複數條觸控感測電極1034接收感測訊號,以根據複數條觸控驅動電極1032與複數條觸控感測電極1034間的互電容性耦合偵測至少一外部物件的觸碰。而控制單元1020可以是第三圖所示實施例的觸控處理裝置330的一部份。 The touch sensing unit 1030 includes a plurality of touch driving electrodes 1032 and a plurality of touch sensing electrodes 1034. In one embodiment, the touch driving electrode 1032 may be the first electrode 321 of the embodiment shown in FIG. 3, and the touch sensing electrode 1034 may be the second electrode 322 of the embodiment shown in FIG. The control unit 1020 outputs the driving signal to the plurality of touch driving electrodes 1032, and receives the sensing signals from the plurality of touch sensing electrodes 1034, according to the plurality of touch driving electrodes 1032 and the plurality of touch sensing electrodes 1034. The mutual capacitive coupling detects the touch of at least one external object. The control unit 1020 can be part of the touch processing device 330 of the embodiment shown in the third figure.
顯示像素單元1040包含一液晶層1042、一像素電極1044與一共同電極1046。液晶層1042位於像素電極1044與共同電極1046之間,以藉由像素電極1044與共同電極1046驅動。複數條觸控驅動電極1032配置於共同電極1046中。複數條觸控驅動電極1032以外之共同電極1046耦接至一直流電位,以形成一屏蔽區域。 The display pixel unit 1040 includes a liquid crystal layer 1042, a pixel electrode 1044 and a common electrode 1046. The liquid crystal layer 1042 is located between the pixel electrode 1044 and the common electrode 1046 to be driven by the pixel electrode 1044 and the common electrode 1046. A plurality of touch driving electrodes 1032 are disposed in the common electrode 1046. The common electrode 1046 other than the plurality of touch driving electrodes 1032 is coupled to the DC current to form a shielding region.
觸控顯示裝置1000更包含一薄膜電晶體(TFT)層1048,其中像素電極1044配置於薄膜電晶體層1048中。當薄膜電晶體層1048進行更新掃描時,將對複數條觸控驅動電極1034產生電磁干擾(EMI;Electro-Magnetic Interference)進而影響互電容性耦合的偵測。因此,共同電極1046上被配置於薄膜電晶體層1048與複數條觸控感測電極1034之間,以藉由共同電極 1046的屏蔽區域降低薄膜電晶體層1048進行更新掃描時產生的電磁干擾。 The touch display device 1000 further includes a thin film transistor (TFT) layer 1048, wherein the pixel electrode 1044 is disposed in the thin film transistor layer 1048. When the thin film transistor layer 1048 is scanned for an update, electromagnetic interference (EMI) is generated for the plurality of touch driving electrodes 1034 to affect the mutual capacitive coupling detection. Therefore, the common electrode 1046 is disposed between the thin film transistor layer 1048 and the plurality of touch sensing electrodes 1034 to form a common electrode. The shielded area of 1046 reduces the electromagnetic interference generated by the thin film transistor layer 1048 during the update scan.
觸控顯示裝置1000更包含一遮光層(Black Matrix)1050、一第一基板1060與一第一偏振層1070。共同電極1046位於液晶層1042與遮光層1050之間,遮光層1050位於共同電極1046與第一基板1060之間,第一基板1060位於遮光層1050與第一偏振層1070之間。再者,遮光層1050包含一彩色濾光片1052。 The touch display device 1000 further includes a black matrix 1050, a first substrate 1060 and a first polarizing layer 1070. The common electrode 1046 is located between the liquid crystal layer 1042 and the light shielding layer 1050. The light shielding layer 1050 is located between the common electrode 1046 and the first substrate 1060. The first substrate 1060 is located between the light shielding layer 1050 and the first polarizing layer 1070. Furthermore, the light shielding layer 1050 includes a color filter 1052.
複數條觸控感測電極1034可配置於複數條觸控驅動電極1032上的各層之中,亦可配置於複數條觸控驅動電極1032上的各層之間。在一實施例中,複數條觸控感測電極1034可配置於第一基板1060與第一偏振層1070之間,如第十A圖所示。在另一實施例中,複數條觸控感測電極1034可配置於遮光層1050與第一基板1060之間,如第十B圖所示。在更一實施例中,複數條觸控感測電極1034可配置於遮光層1050與複數條觸控驅動電極1032之間,如第十C圖所示。在又一實施例中,複數條觸控感測電極1034可配置於遮光層1050中,如第十D圖所示。在更一實施例中,複數條觸控感測電極1034可配置於第一基板1060中,如第十E圖所示。在更一實施例中,複數條觸控感測電極1034可配置於第一偏振層1070中,如第十F圖所示。 The plurality of touch sensing electrodes 1034 can be disposed in each layer of the plurality of touch driving electrodes 1032 or between the layers of the plurality of touch driving electrodes 1032. In one embodiment, the plurality of touch sensing electrodes 1034 can be disposed between the first substrate 1060 and the first polarizing layer 1070, as shown in FIG. In another embodiment, the plurality of touch sensing electrodes 1034 can be disposed between the light shielding layer 1050 and the first substrate 1060, as shown in FIG. In a further embodiment, the plurality of touch sensing electrodes 1034 can be disposed between the light shielding layer 1050 and the plurality of touch driving electrodes 1032, as shown in FIG. In another embodiment, the plurality of touch sensing electrodes 1034 can be disposed in the light shielding layer 1050 as shown in the tenth D. In a further embodiment, the plurality of touch sensing electrodes 1034 can be disposed in the first substrate 1060 as shown in FIG. In a further embodiment, the plurality of touch sensing electrodes 1034 can be disposed in the first polarizing layer 1070 as shown in FIG.
再者,觸控顯示裝置1000更包含一第二基板1062、一第二偏振層1072與一背光模組1080。像素電極1044位於背光模組1080與共同電極1046之間,第二基板1062與第二偏振層1072皆位於像素電極1044與背光模組1080之間。 Furthermore, the touch display device 1000 further includes a second substrate 1062, a second polarizing layer 1072 and a backlight module 1080. The pixel electrode 1044 is located between the backlight module 1080 and the common electrode 1046 , and the second substrate 1062 and the second polarizing layer 1072 are located between the pixel electrode 1044 and the backlight module 1080 .
在一實施例中,第一基板1060與第二基板1062皆為透明材質所形成,其中第二基板1062為TFT玻璃。 In one embodiment, the first substrate 1060 and the second substrate 1062 are both formed of a transparent material, wherein the second substrate 1062 is a TFT glass.
共同電極1046可包含複數條子電極(sub electrode),其中複數條子電極彼此平行排列。複數條子電極可區分成複數群,並且每一群子電極皆耦接至直流電位。複數條觸控驅動電極亦可區分成複數群,並且每一群觸控驅動電極可包含一或多條觸控驅動電極1032,其中每一群觸控驅動電極1032皆耦接至一選擇電路1100(示於後續的圖中),以藉由選擇電路1100切換驅動各群觸控驅動電極。共同電極1046的每一群子電極中可配置有一或多群觸控驅動電極,或者一群觸控驅動電極亦可配置於相鄰的二群子電極中。 The common electrode 1046 can include a plurality of sub-electrodes in which a plurality of sub-electrodes are arranged in parallel with each other. The plurality of sub-electrodes can be divided into a plurality of groups, and each of the sub-electrodes is coupled to a direct current potential. The plurality of touch driving electrodes may be divided into a plurality of groups, and each of the group of touch driving electrodes may include one or more touch driving electrodes 1032, wherein each group of touch driving electrodes 1032 is coupled to a selection circuit 1100 (shown In the subsequent figures, the groups of touch drive electrodes are switched by the selection circuit 1100. One or more groups of touch driving electrodes may be disposed in each group of sub-electrodes of the common electrode 1046, or a group of touch driving electrodes may be disposed in adjacent two groups of sub-electrodes.
請參考第十一A圖、第十一B圖、第十一C圖與第十一D圖所示,其為本發明實施例的共同電極1046與複數條觸控驅動電極1032之結構示意圖。一或多群觸控驅動電極中的複數條觸控驅動電極1032可連續地或離散地配置於共同電極1046的每一群子電極中。 Please refer to FIG. 11A, FIG. 11B, FIG. 11C and FIG. 11D, which are schematic structural diagrams of a common electrode 1046 and a plurality of touch driving electrodes 1032 according to an embodiment of the present invention. The plurality of touch driving driving electrodes 1032 of the one or more groups of touch driving electrodes may be disposed continuously or discretely in each of the group of sub-electrodes of the common electrode 1046.
請參考第十一A圖所示,共同電極1046的複數群子電極包含一第一群子電極SG1、一第二群子電極SG2...一第n群子電極SGn。每一群子電極皆包含複數條子電極,其中複數條子電極包含一第一子電極SE1、一第二子電極SE2...一第m子電極SEm。複數群觸控驅動電極包含一第一群觸控驅動電極DG1、一第二群觸控驅動電極DG2...一第n群觸控驅動電極DGn,並且每一群觸控驅動電極皆包含三條觸控驅動電極1032-1、1032-2、1032-3。第一群觸控驅動電極DG1配置於第一群子電極SG1中、第二群觸控驅動電極DG2配置於第二群子電極SG2中...第n群觸控驅動電極DGn則配置於第n群子電極SGn中。在共同電極1046的每一群子電極SG1、SG2...SGn中,三條觸控驅動電極1032-1、1032-2、1032-3係連續地配置。 Referring to FIG. 11A, the plurality of sub-electrodes of the common electrode 1046 include a first group of sub-electrodes SG1, a second group of sub-electrodes SG2, ..., an n-th sub-electrode SGn. Each of the sub-electrodes comprises a plurality of sub-electrodes, wherein the plurality of sub-electrodes comprise a first sub-electrode SE1, a second sub-electrode SE2, ... a m-th sub-electrode SEm. The plurality of touch driving electrodes include a first group of touch driving electrodes DG1, a second group of touch driving electrodes DG2, ... an nth group of touch driving electrodes DGn, and each group of touch driving electrodes includes three touches The drive electrodes 1032-1, 1032-2, 1032-3 are controlled. The first group of touch driving electrodes DG1 are disposed in the first group of sub-electrodes SG1, and the second group of touch driving electrodes DG2 are disposed in the second group of sub-electrodes SG2. n group of sub-electrodes SGn. Among the respective sub-electrodes SG1, SG2, ... SGn of the common electrode 1046, three touch driving electrodes 1032-1, 1032, 2, 1032-3 are continuously arranged.
請參考第十一B圖所示,每一群觸控驅動電極DG1、DG2...DGn仍分別配置於每一群子電極SG1、SG2...SGn中。然而,在每一群觸控驅動電極DG1、DG2...DGn中,三條觸控驅動電極1032係離散地配置。例如,在第n群觸控驅動電極DGn中,三條觸控驅動電極的相鄰二條觸控驅動電極1032-1、1032-2間配置有第n群子電極SGn的一第二子電極SE2,三條觸控驅動電極1032的另外相鄰二條觸控驅動電極1032-2、1032-3間配置有第n群子電極SGn的一第三子電極SE3。 Referring to FIG. 11B, each group of touch driving electrodes DG1, DG2, . . . DGn is still disposed in each of the group of sub-electrodes SG1, SG2, ..., SGn. However, among each of the group of touch driving electrodes DG1, DG2, ... DGn, the three touch driving electrodes 1032 are discretely arranged. For example, in the nth group of touch driving electrodes DGn, a second sub-electrode SE2 of the nth group of sub-electrodes SGn is disposed between two adjacent touch driving electrodes 1032-1 and 1032-2 of the three touch driving electrodes. A third sub-electrode SE3 of the nth group of sub-electrodes SGn is disposed between the other two adjacent touch driving electrodes 1032-2 and 1032-3 of the three touch driving electrodes 1032.
請參考第十一C圖所示,每一群子電極SG1、SG2...SGn配置有二群觸控驅動電極,並且複數條觸控驅動電極可分成k群觸控驅動電極DG1、DG2...DGk,其中k=2n。每一群觸控驅動電極DG1、DG2...DGk包含二條觸控驅動電極1032-1、1032-2。在每一群觸控驅動電極DG1、DG2...DGk中,二條觸控驅動電極1032係離散地配置。例如,在第k-1群觸控驅動電極DGk-1中,相鄰二條觸控驅動電極1032-1、1032-2間配置有第n群子電極SGn的一第二子電極SE2與一第三子電極SE3,而在第k群觸控驅動電極DGk中,相鄰二條觸控驅動電極1032-1、1032-2間配置有第n群子電極SGn的一第m-2子電極SEm-2與一第m-1子電極SEm-1。 Referring to FIG. 11C, each group of sub-electrodes SG1, SG2, ... SGn is configured with two groups of touch driving electrodes, and the plurality of touch driving electrodes can be divided into k groups of touch driving electrodes DG1, DG2.. .DGk, where k=2n. Each group of touch driving electrodes DG1, DG2, ... DGk includes two touch driving electrodes 1032-1, 1032-2. In each of the group of touch driving electrodes DG1, DG2, ... DGk, the two touch driving electrodes 1032 are discretely arranged. For example, in the k-1th group touch driving electrode DGk-1, a second sub-electrode SE2 and a first sub-electrode SGn are disposed between two adjacent touch driving electrodes 1032-1 and 1032-2. The third sub-electrode SE3, and in the kth group of touch driving electrodes DGk, an m-2th sub-electrode SEm- of the nth sub-electrode SGn is disposed between two adjacent touch driving electrodes 1032-1 and 1032-2. 2 and an m-1th sub-electrode SEm-1.
請參考第十一D圖所示,複數條觸控驅動電極1032可分成j群觸控驅動電極DG1、DG2...DGj。每一群觸控驅動電極DG1、DG2...DGj的二條觸控驅動電極1032-1、1032-2可配置於同一群子電極中,亦可分別配置於相鄰二群子電極中。例如第一群觸控驅動電極DG1的二條觸控驅動電極1032-1、1032-2皆配置於第一群子電極SG1中,並且第一群觸控驅動電極DG1的二條觸控驅動電極1032-1、1032-2間配置有第一群子電極SG1的第i 子電極SEi與第i+1子電極SEi+1。第二群觸控驅動電極DG2的二條觸控驅動電極1032-1、1032-2則可分別配置於第一群子電極SG1與第二群子電極SG2中,其中第二群觸控驅動電極DG2的二條觸控驅動電極1032-1、1032-2間配置有第一群子電極SG1的第m子電極SEm與第二群子電極SG2的第一子電極SE1。 Referring to FIG. 11D, a plurality of touch driving electrodes 1032 can be divided into j group touch driving electrodes DG1, DG2, ... DGj. The two touch driving electrodes 1032-1 and 1032-2 of each group of touch driving electrodes DG1, DG2, ... DGj may be disposed in the same group of sub-electrodes, or may be disposed in adjacent two sub-electrodes. For example, the two touch driving electrodes 1032-1 and 1032-2 of the first group of touch driving electrodes DG1 are disposed in the first group of sub-electrodes SG1, and the two touch driving electrodes 1032 of the first group of touch driving electrodes DG1 are 1, 1032-2 is arranged with the first group of sub-electrodes SG1 The sub-electrode SEi and the (i+1)th sub-electrode SEi+1. The two touch driving electrodes 1032-1 and 1032-2 of the second group of touch driving electrodes DG2 are respectively disposed in the first group sub-electrode SG1 and the second group sub-electrode SG2, wherein the second group of touch driving electrodes DG2 The mth sub-electrode SEm of the first group sub-electrode SG1 and the first sub-electrode SE1 of the second group sub-electrode SG2 are disposed between the two touch driving electrodes 1032-1 and 1032-2.
在共同電極1046中,耦接至直流電位Vcom的每一群子電極SG1、SG2...SGn的面積大於複數條觸控驅動電極1032之面積,亦即屏蔽區域的面積大於複數條觸控驅動電極1032之面積,以藉由屏蔽區域降低來自薄膜電晶體層1048的電磁干擾。 In the common electrode 1046, the area of each of the sub-electrodes SG1, SG2, ... SGn coupled to the DC potential Vcom is larger than the area of the plurality of touch driving electrodes 1032, that is, the area of the shielding area is larger than the plurality of touch driving electrodes. The area of 1032 is to reduce electromagnetic interference from the thin film transistor layer 1048 by the shield region.
由於薄膜電晶體層1048逐條地更新水平像素線(horizontal pixel line),以進行顯示裝置畫面的更新,當被驅動的至少一觸控驅動電極重疊或靠近薄膜電晶體層1048中正在更新的水平像素線時,被驅動的至少一觸控驅動電極的驅動訊號將干擾正在更新的水平像素線。一般而言,觸控面板會在顯示裝置未更新掃描水平像素線時進行驅動複數條觸控驅動電極1032,以避免驅動訊號干擾水平像素線的更新掃描。然而,本發明更提出一種觸控顯示裝置中複數條觸控驅動電極1032的驅動方法,可同時進行更新掃描水平像素線與驅動複數條觸控驅動電極1032。首先,複數條觸控驅動電極的驅動方向設計成與薄膜電晶體層1048的更新掃描方向相反。當被驅動的至少一觸控驅動電極將影響薄膜電晶體層1048更新掃描的水平像素線時,暫停驅動該至少一觸控驅動電極,待薄膜電晶體層1048更新掃描的水平像素線離開該觸控驅動電極的影響範圍後再進行驅動。 Since the thin film transistor layer 1048 updates the horizontal pixel line one by one to update the display device screen, when the driven at least one touch driving electrode overlaps or approaches the level being updated in the thin film transistor layer 1048 In the case of the pixel line, the driving signal of the at least one touch driving electrode that is driven will interfere with the horizontal pixel line being updated. In general, the touch panel drives the plurality of touch driving electrodes 1032 when the display device does not update the scanning horizontal pixel lines, so as to prevent the driving signals from interfering with the updating scanning of the horizontal pixel lines. However, the present invention further provides a driving method for a plurality of touch driving electrodes 1032 in the touch display device, which can simultaneously update the scanning horizontal pixel lines and drive the plurality of touch driving electrodes 1032. First, the driving direction of the plurality of touch driving electrodes is designed to be opposite to the updated scanning direction of the thin film transistor layer 1048. When the at least one touch driving electrode is driven to affect the horizontal pixel line of the thin film transistor layer 1048, the at least one touch driving electrode is paused, and the thin film pixel layer of the thin film transistor layer 1048 is scanned to leave the touch. Drive the control range of the drive electrode.
請參考第十二圖所示,其為本發明一實施例的薄膜電晶體層 的更新掃描與複數條觸控驅動電極的驅動方向的局部透視圖。複數條觸控驅動電極的驅動方向D1與薄膜電晶體層1048的更新掃描方向D2相反。當被驅動的第i群觸控驅動電極DGi的三條觸控驅動電極1032-1、1032-2、1032-3重疊或靠近薄膜電晶體層1048中正在更新的水平像素線PL時,選擇電路1100暫停驅動原本被驅動的第i群觸控驅動電極DGi,待薄膜電晶體層1048更新掃描的水平像素線離開第i群觸控驅動電極DGi的影響範圍後再進行驅動。複數條觸控驅動電極1032皆為水平排列以平行於薄膜電晶體層1048的水平像素線,並且平行於複數條子電極。 Please refer to FIG. 12, which is a thin film transistor layer according to an embodiment of the invention. The update scan scans a partial perspective view of the driving direction of the plurality of touch drive electrodes. The driving direction D1 of the plurality of touch driving electrodes is opposite to the updating scanning direction D2 of the thin film transistor layer 1048. When the three touch driving electrodes 1032-1, 1032-2, 1032-3 of the driven ith group touch driving electrode DGi overlap or are close to the horizontal pixel line PL being updated in the thin film transistor layer 1048, the selection circuit 1100 The ith group of touch driving electrodes DGi that are originally driven are suspended, and the horizontal pixel lines scanned by the thin film transistor layer 1048 are driven away from the influence range of the ith group of touch driving electrodes DGi. The plurality of touch drive electrodes 1032 are all horizontally aligned parallel to the horizontal pixel lines of the thin film transistor layer 1048 and parallel to the plurality of sub-electrodes.
據此,本發明更提出一種觸控顯示裝置中複數條觸控驅動電極1032的驅動方法,請參考第十三圖所示,其為本發明一實施例的觸控驅動電極驅動方法的一方塊流程圖。首先,如步驟1300所示,當觸控顯示裝置更新掃描水平像素線時,觸控顯示裝置持續提供驅動訊號給至少一觸控驅動電極,以進行互電容偵測。隨後,如步驟1310所示,判斷更新掃描中的水平像素線是否位於被驅動的至少一觸控驅動電極的一影響範圍內。然後,如步驟1320所示,當更新掃描中的水平像素線位於影響範圍外時,持續驅動該至少一觸控驅動電極,並持續執行步驟1310。而後,如步驟1330所示,當更新掃描中的水平像素線進入影響範圍內時,暫停驅動該至少一觸控驅動電極,並持續執行步驟1310。之後,待水平像素線持續更新掃描至離開該影響範圍後,再執行步驟1320,驅動該至少一觸控驅動電極。 Accordingly, the present invention further provides a driving method for a plurality of touch driving electrodes 1032 in a touch display device. Please refer to FIG. 13 , which is a block of a method for driving a touch driving electrode according to an embodiment of the invention. flow chart. First, as shown in step 1300, when the touch display device updates the scan horizontal pixel line, the touch display device continuously supplies the driving signal to the at least one touch driving electrode for mutual capacitance detection. Then, as shown in step 1310, it is determined whether the horizontal pixel line in the update scan is within an influence range of the at least one touch driving electrode that is driven. Then, as shown in step 1320, when the horizontal pixel line in the update scan is outside the influence range, the at least one touch drive electrode is continuously driven, and step 1310 is continuously performed. Then, as shown in step 1330, when the horizontal pixel line in the update scan enters the influencing range, the driving of the at least one touch driving electrode is suspended, and step 1310 is continuously performed. Then, after the horizontal pixel line is continuously updated and scanned to leave the influence range, step 1320 is executed to drive the at least one touch driving electrode.
對於上述的內嵌式觸控螢幕而言,在進行電容式偵測時,可能會遭到來自薄膜電晶體層1048的電磁干擾。然而,在偵測主動發出電信號的發信器100的時候,假設薄膜電晶體層1048更新顯示裝置畫面時所發出 的電磁干擾與電信號所混合的頻率不相同,也互不為諧振頻率。那麼,第九A圖與第九B圖所示的實施例,可以應用於上述的內嵌式觸控螢幕當中。因為觸控處理裝置330內的各個解調變器420會濾除掉那些不符合發信器100之複數個頻率的干擾信號。 For the above-described in-cell touch screen, electromagnetic interference from the thin film transistor layer 1048 may be encountered during capacitive sensing. However, when detecting the transmitter 100 that actively emits an electrical signal, it is assumed that the thin film transistor layer 1048 is updated when the display device screen is updated. The electromagnetic interference is not mixed with the frequency of the electrical signal, and is not the resonant frequency. Then, the embodiments shown in FIGS. 9A and 9B can be applied to the above-described in-cell touch screen. Because each of the demodulation transformers 420 within the touch processing device 330 filters out interference signals that do not conform to the plurality of frequencies of the transmitter 100.
請參考第十四圖,其為本發明一實施例的觸控驅動電極進行電信號偵測方法的一方塊流程圖。在步驟1400中,當觸控顯示裝置在更新掃描水平像素線的時候,觸控處理裝置並不會提供驅動訊號給至少一觸控驅動電極(或第一電極)。如此一來,該觸控驅動電極或第一電極才能夠接收來自發信器的電信號。由於該觸控驅動電極或第一電極和共同電極的間隔相當靠近,所以需要判斷更新掃描中的水平像素線是否位於正在進行電信號偵測的觸控驅動電極或第一電極的一影響範圍內,如步驟1410。如果判斷結果為真,那麼進行步驟1430,暫停該觸控驅動電極或第一電極的電信號偵測,如果判斷結果為否,接著執行步驟1420,可以持續該觸控驅動電極或第一電極的電信號偵測。 Please refer to FIG. 14 , which is a block diagram of a method for detecting an electrical signal of a touch driving electrode according to an embodiment of the invention. In step 1400, when the touch display device is updating the scanning horizontal pixel line, the touch processing device does not provide the driving signal to the at least one touch driving electrode (or the first electrode). In this way, the touch driving electrode or the first electrode can receive the electrical signal from the transmitter. Since the interval between the touch driving electrode or the first electrode and the common electrode is relatively close, it is necessary to determine whether the horizontal pixel line in the update scan is located within an influence range of the touch driving electrode or the first electrode that is performing electrical signal detection. , as in step 1410. If the determination result is true, then step 1430 is performed to suspend the electrical signal detection of the touch driving electrode or the first electrode. If the determination result is no, then step 1420 is performed to continue the touch driving electrode or the first electrode. Electrical signal detection.
當觸控處理裝置內的解調變器數量無法一次對所有的觸控驅動電極或第一電極同時進行電信號偵測時,就必須執行第十四圖所示的實施例。和第十二圖所示的實施例類似,進行電信號偵測的順序是從下到上,而更新水平掃描線的順序是從上到下。當然,本發明也可以適用於兩者的順序相同的情況。 When the number of demodulators in the touch processing device cannot simultaneously detect electrical signals for all of the touch driving electrodes or the first electrodes, the embodiment shown in FIG. 14 must be executed. Similar to the embodiment shown in Fig. 12, the order of electrical signal detection is from bottom to top, and the order of updating horizontal scanning lines is from top to bottom. Of course, the present invention is also applicable to the case where the order of the two is the same.
一般來說,觸控顯示裝置進行畫面的更新時,有停止更新的空白期間。在更新完一整個畫面之後,會有一個垂直空白期間(VBI,vertical blanking interval),在更新完一條水平像素線的時候,會有一個水平空白期 間(HBI,horizontal blanking interval)。在一實施例中,當觸控處理裝置內的解調變器數量足夠一次對所有的觸控驅動電極與觸控感測電極(第一電極與第二電極)進行電信號偵測時,可以安排在空白期間進行偵測。而在非空白期間,執行上述的電容式偵測。 Generally, when the touch display device updates the screen, there is a blank period in which the update is stopped. After updating an entire screen, there will be a vertical blanking interval (VBI). When a horizontal pixel line is updated, there will be a horizontal blank period. HBI (horizontal blanking interval). In an embodiment, when the number of demodulators in the touch processing device is sufficient to perform electrical signal detection on all the touch driving electrodes and the touch sensing electrodes (the first electrode and the second electrode), Schedule a detection during the blank period. During the non-blank period, the above capacitive detection is performed.
由於觸控感測電極或第二電極是垂直於水平像素線,因此在任何更新任何一條水平像素線時,觸控感測電極或第二電極可能會受到電磁干擾。所以在一實施例中,觸控感測電極或第二電極是在空白期間進行電信號偵測,而觸控驅動電極或第一電極是在非空白期間進行電信號偵測。 Since the touch sensing electrode or the second electrode is perpendicular to the horizontal pixel line, the touch sensing electrode or the second electrode may be subjected to electromagnetic interference when any of the horizontal pixel lines is updated. Therefore, in an embodiment, the touch sensing electrode or the second electrode performs electrical signal detection during the blank period, and the touch driving electrode or the first electrode performs electrical signal detection during the non-blank period.
在一實施例中,觸控處理裝置和觸控顯示裝置可以是同一裝置,觸控處理裝置自然可以得知上述的空白時期。在另一實施例中,觸控處理裝置和觸控顯示裝置可以是不同裝置,觸控處理裝置可以連接到觸控顯示裝置,以便得知空白時期的開始與結束的時機。 In one embodiment, the touch processing device and the touch display device may be the same device, and the touch processing device can naturally know the blank period. In another embodiment, the touch processing device and the touch display device may be different devices, and the touch processing device may be connected to the touch display device to know the timing of the start and end of the blank period.
在一實施例中,本發明提供一種偵測近接於一觸控顯示裝置的一發信器之方法。其中該發信器發送一電信號,該電信號係由複數個頻率混合而成。該觸控顯示裝置包含位於像素電極與共同電極之間的液晶層以及複數個第二電極,其中該共同電極包含複數個第一電極,該複數個第一電極與該複數個第二電極的重疊處形成複數個感測點。該方法包含:針對每一個該第一電極計算其所接收之該電信號的總信號強度;針對每一個該第二電極計算其所接收之該電信號的總信號強度;以及根據所計算出之每一個該第一電極與每一個該第二電極所接收之該電信號的總信號強度,計算該發信器與該觸控顯示裝置的一相對位置。 In one embodiment, the present invention provides a method of detecting a transmitter that is in proximity to a touch display device. The transmitter sends an electrical signal, which is a mixture of a plurality of frequencies. The touch display device includes a liquid crystal layer between the pixel electrode and the common electrode and a plurality of second electrodes, wherein the common electrode includes a plurality of first electrodes, and the overlapping of the plurality of first electrodes and the plurality of second electrodes A plurality of sensing points are formed at the site. The method includes calculating, for each of the first electrodes, a total signal strength of the electrical signal that it receives; calculating, for each of the second electrodes, a total signal strength of the received electrical signal; and calculating Calculating a relative position of the transmitter and the touch display device for each of the first electrodes and the total signal strength of the electrical signals received by each of the second electrodes.
其中上述之該複數個第一電極以外之該共同電極耦接至一 直流電位,以形成一屏蔽區域。 The common electrode other than the plurality of first electrodes is coupled to one DC potential to form a shielded area.
在一實施例中,在該複數個第一電極以外之該共同電極耦接至該直流電位時,不針對每一個該第二電極計算其所接收之該電信號的總信號強度。在另一實施例中,在該觸控顯示裝置進行更新掃描的空白期間,針對每一個該第一電極計算其所接收之該電信號的總信號強度。在更一實施例中,在該觸控顯示裝置進行更新掃描的空白期間,針對每一個該第二電極計算其所接收之該電信號的總信號強度。 In one embodiment, when the common electrode other than the plurality of first electrodes is coupled to the DC potential, the total signal strength of the received electrical signal is not calculated for each of the second electrodes. In another embodiment, during the blank in which the touch display device performs the update scan, the total signal strength of the received electrical signal is calculated for each of the first electrodes. In a further embodiment, during the blank in which the touch display device performs the update scan, the total signal strength of the received electrical signal is calculated for each of the second electrodes.
該複數條第一電極為平行排列,且平行於該液晶層所更新掃描的水平像素線,上述之針對每一個該第一電極計算其所接收之該電信號的總信號強度的順序與該液晶層所更新掃描的順序相反。該方法更包含:判斷更新掃描的水平像素線是否位於至少一第一電極的影響範圍內;以及當上述判斷為真,暫停對該至少一第一電極計算其所接收之該電信號的總強度。 The plurality of first electrodes are arranged in parallel and parallel to the horizontal pixel lines scanned by the liquid crystal layer, and the order of the total signal strength of the received electrical signals is calculated for each of the first electrodes and the liquid crystal The order in which the layers are updated is reversed. The method further includes: determining whether the horizontal pixel line of the updated scan is located within the influence range of the at least one first electrode; and when the determining is true, suspending calculating the total intensity of the received electrical signal for the at least one first electrode .
在另一實施例中,本發明提供一種觸控處理裝置,用於偵測近接於一觸控顯示裝置的一發信器。其中該發信器發送一電信號,該電信號係由複數個頻率混合而成。該觸控顯示裝置包含位於像素電極與共同電極之間的液晶層以及複數個第二電極,其中該共同電極包含複數個第一電極,該複數個第一電極與該複數個第二電極的重疊處形成複數個感測點。該觸控處理裝置係用於:針對每一個該第一電極計算其所接收之該電信號的總信號強度;針對每一個該第二電極計算其所接收之該電信號的總信號強度;以及根據所計算出之每一個該第一電極與每一個該第二電極所接收之該電信號的總信號強度,計算該發信器與該觸控顯示裝置的一相對位置。 In another embodiment, the present invention provides a touch processing device for detecting a transmitter that is closely connected to a touch display device. The transmitter sends an electrical signal, which is a mixture of a plurality of frequencies. The touch display device includes a liquid crystal layer between the pixel electrode and the common electrode and a plurality of second electrodes, wherein the common electrode includes a plurality of first electrodes, and the overlapping of the plurality of first electrodes and the plurality of second electrodes A plurality of sensing points are formed at the site. The touch processing device is configured to: calculate a total signal strength of the electrical signal received by each of the first electrodes; calculate a total signal strength of the electrical signal received by each of the second electrodes; And calculating a relative position of the transmitter and the touch display device according to the calculated total signal strength of the electrical signal received by each of the first electrode and each of the second electrodes.
其中上述之該複數個第一電極以外之該共同電極耦接至一直流電位,以形成一屏蔽區域。 The common electrode other than the plurality of first electrodes is coupled to a DC current to form a shielded region.
在一實施例中,在該複數個第一電極以外之該共同電極耦接至該直流電位時,不針對每一個該第二電極計算其所接收之該電信號的總信號強度。在另一實施例中,在該觸控顯示裝置進行更新掃描的空白期間,針對每一個該第一電極計算其所接收之該電信號的總信號強度。在更一實施例中,在該觸控顯示裝置進行更新掃描的空白期間,針對每一個該第二電極計算其所接收之該電信號的總信號強度。 In one embodiment, when the common electrode other than the plurality of first electrodes is coupled to the DC potential, the total signal strength of the received electrical signal is not calculated for each of the second electrodes. In another embodiment, during the blank in which the touch display device performs the update scan, the total signal strength of the received electrical signal is calculated for each of the first electrodes. In a further embodiment, during the blank in which the touch display device performs the update scan, the total signal strength of the received electrical signal is calculated for each of the second electrodes.
該複數條第一電極為平行排列,且平行於該液晶層所更新掃描的水平像素線,上述之針對每一個該第一電極計算其所接收之該電信號的總信號強度的順序與該液晶層所更新掃描的順序相反。該觸控處理裝置更用於:判斷更新掃描的水平像素線是否位於至少一第一電極的影響範圍內;以及當上述判斷為真,暫停對該至少一第一電極計算其所接收之該電信號的總強度。 The plurality of first electrodes are arranged in parallel and parallel to the horizontal pixel lines scanned by the liquid crystal layer, and the order of the total signal strength of the received electrical signals is calculated for each of the first electrodes and the liquid crystal The order in which the layers are updated is reversed. The touch processing device is further configured to: determine whether the horizontal pixel line of the updated scan is located within the influence range of the at least one first electrode; and when the determining is true, suspending calculating the received power of the at least one first electrode The total strength of the signal.
在更一實施例中,本發明提供一種觸控顯示系統,用於偵測近接於一觸控顯示裝置的一發信器。該發信器發送一電信號,該電信號係由複數個頻率混合而成。該觸控顯示系統包含該觸控顯示裝置與上述的該觸控處理裝置。該觸控顯示系統還可以包含該發信器。 In a further embodiment, the present invention provides a touch display system for detecting a transmitter that is closely connected to a touch display device. The transmitter transmits an electrical signal that is a mixture of a plurality of frequencies. The touch display system includes the touch display device and the touch processing device described above. The touch display system can also include the transmitter.
本發明的主要精神之一,在於利用內嵌式的觸控螢幕進行發信器的偵測,並且盡量減少觸控螢幕在更新掃描畫面時,對偵測所造成的電磁干擾。 One of the main spirits of the present invention is to use the embedded touch screen to detect the sender and minimize the electromagnetic interference caused by the touch screen when updating the scanned image.
1400~1430‧‧‧步驟 1400~1430‧‧‧Steps
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