TWI806180B - Touch display device and positioning method of display panel - Google Patents

Touch display device and positioning method of display panel Download PDF

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TWI806180B
TWI806180B TW110137078A TW110137078A TWI806180B TW I806180 B TWI806180 B TW I806180B TW 110137078 A TW110137078 A TW 110137078A TW 110137078 A TW110137078 A TW 110137078A TW I806180 B TWI806180 B TW I806180B
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pressure
pressure sensors
processing circuit
sensing results
display panel
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TW202316260A (en
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向瑞傑
曾緒祥
陳志強
徐瑞慶
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宏碁股份有限公司
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Abstract

A touch display device and a positioning method of a display panel. The touch display device includes the display panel, a plurality of force sensors, and a processing circuit. The display panel displays an image. The plurality of force sensors are arranged below the display panel. The plurality of force sensors senses a press event on the display panel to provide a plurality of force sensing results. The processing circuit is coupled to the plurality of force sensors. The processing circuit calculates a press position of the press event according to at least two of the plurality of the force sensing results.

Description

觸控顯示裝置及顯示面板的定位方法Touch display device and positioning method for display panel

本發明是有關於一種觸控顯示裝置，且特別是有關於一種可以利用壓力感測器（force sensor）進行觸控定位的觸控顯示裝置及顯示面板的定位方法。The present invention relates to a touch display device, and in particular to a touch display device and a display panel positioning method capable of using a force sensor for touch positioning.

現今的觸控顯示面板一般是採用電容式觸控感測技術來感測顯示面板的觸碰事件的位置。對於被設計用於簡單應用的顯示面板而言，電容式觸控感測技術是一個昂貴的解決方案。找出更適合簡單應用的顯示面板定位技術，是觸控感測技術領域的技術課題之一。Today's touch display panels generally use capacitive touch sensing technology to sense the position of a touch event on the display panel. Capacitive touch sensing technology is an expensive solution for display panels designed for simple applications. Finding out a display panel positioning technology more suitable for simple applications is one of the technical issues in the field of touch sensing technology.

有鑑於此，本發明提出一種觸控顯示裝置及顯示面板的定位方法，以定位發生於顯示面板上的按壓事件的按壓位置。In view of this, the present invention proposes a positioning method for a touch display device and a display panel to locate the pressing position of a pressing event on the display panel.

在本發明的一實施例中，所述觸控顯示裝置包括顯示面板、多個壓力感測器以及處理電路。顯示面板顯示畫面。多個壓力感測器配置於顯示面板下方。多個壓力感測器感測於顯示面板上的按壓事件以提供多個壓力感測結果。處理電路耦接至多個壓力感測器。處理電路依據多個壓力感測結果中的至少兩個計算按壓事件的按壓位置。In an embodiment of the present invention, the touch display device includes a display panel, a plurality of pressure sensors and a processing circuit. Display panel display screen. Multiple pressure sensors are arranged under the display panel. A plurality of pressure sensors sense pressing events on the display panel to provide a plurality of pressure sensing results. The processing circuit is coupled to the plurality of pressure sensors. The processing circuit calculates the pressing position of the pressing event according to at least two of the pressure sensing results.

在本發明的一實施例中，所述顯示面板的定位方法包括：配置多個壓力感測器於顯示面板下方；透過多個壓力感測器感測於顯示面板上的按壓事件；以及透過處理電路依據多個壓力感測器的多個壓力感測結果中的至少兩個計算按壓事件的按壓位置。In an embodiment of the present invention, the positioning method of the display panel includes: disposing a plurality of pressure sensors under the display panel; sensing a press event on the display panel through the plurality of pressure sensors; and processing The circuit calculates the pressing position of the pressing event according to at least two of the pressure sensing results of the pressure sensors.

基於上述，本發明諸實施例所述的觸控顯示裝置可以透過這些壓力感測器感測顯示面板上的按壓事件。處理電路可以依據在顯示面板下方的至少兩個壓力感測器的壓力感測結果來計算/定位發生於顯示面板上的按壓事件的按壓位置。如此一來，所述觸控顯示裝置具有成本低、複雜度低、容易實現等功效，更適合簡單應用。Based on the above, the touch display device according to the embodiments of the present invention can sense the pressing event on the display panel through the pressure sensors. The processing circuit can calculate/locate the pressing position of the pressing event occurring on the display panel according to the pressure sensing results of the at least two pressure sensors below the display panel. In this way, the touch display device has the effects of low cost, low complexity, and easy implementation, and is more suitable for simple applications.

為讓本發明的上述特徵和優點能更明顯易懂，下文特舉實施例，並配合所附圖式作詳細說明如下。In order to make the above-mentioned features and advantages of the present invention more comprehensible, the following specific embodiments are described in detail together with the accompanying drawings.

在本案說明書全文（包括申請專利範圍）中所使用的「耦接（或連接）」一詞可指任何直接或間接的連接手段。舉例而言，若文中描述第一裝置耦接（或連接）於第二裝置，則應該被解釋成該第一裝置可以直接連接於該第二裝置，或者該第一裝置可以透過其他裝置或某種連接手段而間接地連接至該第二裝置。本案說明書全文（包括申請專利範圍）中提及的「第一」、「第二」等用語是用以命名元件（element）的名稱，或區別不同實施例或範圍，而並非用來限制元件數量的上限或下限，亦非用來限制元件的次序。另外，凡可能之處，在圖式及實施方式中使用相同標號的元件/構件/步驟代表相同或類似部分。不同實施例中使用相同標號或使用相同用語的元件/構件/步驟可以相互參照相關說明。The term "coupled (or connected)" used throughout the specification of this case (including the scope of claims) may refer to any direct or indirect means of connection. For example, if it is described in the text that a first device is coupled (or connected) to a second device, it should be interpreted that the first device can be directly connected to the second device, or the first device can be connected to the second device through other devices or certain A connection means indirectly connected to the second device. The terms "first" and "second" mentioned in the entire description of this case (including the scope of the patent application) are used to name elements (elements), or to distinguish different embodiments or ranges, and are not used to limit the number of elements The upper or lower limit of , nor is it used to limit the order of the elements. In addition, wherever possible, elements/components/steps using the same reference numerals in the drawings and embodiments represent the same or similar parts. Elements/components/steps using the same symbols or using the same terms in different embodiments can refer to related descriptions.

圖1是依照本發明一實施例的觸控顯示裝置100的電路方塊（circuit block）示意圖。於圖1所示實施例中，觸控顯示裝置100包括顯示面板110、壓力感測器120_1、120_2、…、120_n以及處理電路130。顯示面板110用以顯示畫面IMG。依照實際應用，顯示面板110的種類可以是液晶顯示器（Liquid Crystal Display，LCD）、電子紙顯示器（Electronic Paper Display，EPD）、高分子分散液晶（Polymer-dispersed Liquid Crystal）、膽固醇液晶（Cholesteric Liquid Crystal）、發光二極體（Light Emitting Diode，LED）顯示器、場發射顯示器（Field Emission Display，FED）、有機發光二極體（Organic Light Emitting Diode，OLED）、主動式矩陣有機發光二極體（Active-Matrix Organic Light-Emitting Diode，AMOLED）顯示器、軟性顯示器（Flexible Display）、透明發光二極體顯示器（Transparent Light Emitted Diode Display）或其他提供顯示功能的顯示單元。依照實際需求，顯示面板110可以應用於電子裝置的主螢幕、輔助螢幕（例如觸控欄（touch bar））或是其他可以進行觸控輸入的顯示應用上。在針對一些簡單應用的設計範例中，顯示面板110可以是不具備觸碰感測功能的任何顯示面板。FIG. 1 is a schematic diagram of a circuit block of a touch display device 100 according to an embodiment of the invention. In the embodiment shown in FIG. 1 , the touch display device 100 includes a display panel 110 , pressure sensors 120_1 , 120_2 , . . . , 120 — n and a processing circuit 130 . The display panel 110 is used for displaying an image IMG. According to the actual application, the type of display panel 110 may be liquid crystal display (Liquid Crystal Display, LCD), electronic paper display (Electronic Paper Display, EPD), polymer-dispersed liquid crystal (Polymer-dispersed Liquid Crystal), cholesteric liquid crystal (Cholesteric Liquid Crystal) ), Light Emitting Diode (Light Emitting Diode, LED) display, Field Emission Display (Field Emission Display, FED), Organic Light Emitting Diode (Organic Light Emitting Diode, OLED), Active Matrix Organic Light Emitting Diode (Active -Matrix Organic Light-Emitting Diode (AMOLED) display, flexible display (Flexible Display), transparent light-emitting diode display (Transparent Light Emitted Diode Display) or other display units that provide display functions. According to actual needs, the display panel 110 can be applied to a main screen of an electronic device, an auxiliary screen (such as a touch bar) or other display applications capable of touch input. In design examples for some simple applications, the display panel 110 can be any display panel without touch sensing function.

壓力感測器120_1～120_n可以是任何將壓力轉換為電訊號的感測器，例如使用壓電材料來製作的壓力感測器。壓力感測器120_1～120_n被配置於顯示面板110的下方。使用者可以觸碰顯示面板110的上表面（亦即對顯示面板110施加按壓事件PE），而壓力感測器120_1～120_n可以感測於顯示面板110上表面的按壓事件PE以提供多個壓力感測結果F1、F2、…、Fn給處理電路130。在一些實施例中，壓力感測器120_1～120_n的任一者或全部可以為垂直壓力感測器（vertical force sensor），壓力感測結果F1～Fn的任一者或全部可以為垂直壓力值，以感測垂直於顯示面板110方向上的壓力。壓力感測器120_1～120_n的數量n可以依照實際需求來設置，本實施例並不設限。處理電路130耦接至壓力感測器120_1～120_n，以接收壓力感測器120_1～120_n提供的壓力感測結果F1～Fn。The pressure sensors 120_1˜120_n can be any sensors that convert pressure into electrical signals, such as pressure sensors made of piezoelectric materials. The pressure sensors 120_1 ˜ 120 — n are disposed under the display panel 110 . The user can touch the upper surface of the display panel 110 (that is, apply a press event PE to the display panel 110), and the pressure sensors 120_1˜120_n can sense the press event PE on the upper surface of the display panel 110 to provide multiple pressures. The sensing results F1 , F2 , . . . , Fn are given to the processing circuit 130 . In some embodiments, any or all of the pressure sensors 120_1˜120_n may be vertical force sensors, and any or all of the pressure sensing results F1˜Fn may be vertical pressure values. , to sense the pressure in the direction perpendicular to the display panel 110 . The number n of the pressure sensors 120_1˜120_n can be set according to actual needs, and is not limited in this embodiment. The processing circuit 130 is coupled to the pressure sensors 120_1˜120_n to receive the pressure sensing results F1˜Fn provided by the pressure sensors 120_1˜120_n.

依照設計需求，處理電路130的相關功能可以利用硬體描述語言（hardware description languages，例如Verilog HDL或VHDL）或其他合適的編程語言來實現為硬體。舉例來說，處理電路130的相關功能可以被實現於一或多個微控制器、微處理器、特殊應用積體電路（Application-specific integrated circuit, ASIC）、數位信號處理器（digital signal processor, DSP）、場可程式邏輯閘陣列（Field Programmable Gate Array, FPGA）及/或其他處理單元中的各種邏輯區塊、模組和電路。以軟體形式及/或韌體形式而言，處理電路130的相關功能可以被實現為編程碼（programming codes）。例如，利用一般的編程語言（programming languages，例如C、C++或組合語言）或其他合適的編程語言來實現。所述編程碼可以被記錄/存放在「非臨時的電腦可讀取媒體（non-transitory computer readable medium）」中，例如包括唯讀記憶體（Read Only Memory，ROM）、帶（tape）、碟（disk）、卡（card）、半導體記憶體、可程式設計的邏輯電路及/或存儲裝置。中央處理器（Central Processing Unit，CPU）、微控制器或微處理器可以從所述非臨時的電腦可讀取媒體中讀取並執行所述編程碼，從而達成相關功能。According to design requirements, related functions of the processing circuit 130 can be implemented as hardware by using hardware description languages (such as Verilog HDL or VHDL) or other suitable programming languages. For example, the relevant functions of the processing circuit 130 may be implemented in one or more microcontrollers, microprocessors, application-specific integrated circuits (Application-specific integrated circuit, ASIC), digital signal processors (digital signal processor, DSP), Field Programmable Gate Array (Field Programmable Gate Array, FPGA) and/or various logic blocks, modules and circuits in other processing units. In terms of software and/or firmware, related functions of the processing circuit 130 may be implemented as programming codes. For example, it can be realized by using general programming languages (programming languages, such as C, C++ or assembly language) or other suitable programming languages. The programming code can be recorded/stored in "non-transitory computer readable medium", such as including read only memory (Read Only Memory, ROM), tape (tape), disk (disk), card (card), semiconductor memory, programmable logic circuit and/or storage device. A central processing unit (Central Processing Unit, CPU), microcontroller or microprocessor can read and execute the programming code from the non-transitory computer-readable medium, so as to achieve related functions.

圖2是依照本發明一實施例的觸控顯示裝置的定位方法的流程示意圖。請同時參照圖1與圖2。於步驟S210中，壓力感測器120_1～120_n可以被配置於顯示面板110的下方。舉例而言，圖3A與圖3B是依照本發明一實施例說明觸控顯示裝置100的不同使用情境的上視透視示意圖。於圖3A與圖3B所示實施例中，以長條形狀的顯示面板110為範例，顯示面板110可以顯示如圖3A所示的彩條（color bar）畫面IMG_1、圖3B所示的按鈕圖標（icon）畫面IMG_2或是其他影像畫面。圖1所示壓力感測器120_1～120_n的排列與分布方式可以參照圖3A與圖3B所示壓力感測器120_1～120_n的相關說明加以類推。然而，圖1所示壓力感測器120_1～120_n的具體排列與分布方式不應受限於圖3A與圖3B所示實施例。壓力感測器120_1～120_n可以依照實際設計來設置，本實施例並不設限。FIG. 2 is a schematic flowchart of a positioning method for a touch display device according to an embodiment of the invention. Please refer to Figure 1 and Figure 2 at the same time. In step S210 , the pressure sensors 120_1 ˜ 120 — n may be disposed under the display panel 110 . For example, FIG. 3A and FIG. 3B are top perspective diagrams illustrating different usage scenarios of the touch display device 100 according to an embodiment of the present invention. In the embodiment shown in FIG. 3A and FIG. 3B , taking the strip-shaped display panel 110 as an example, the display panel 110 can display the color bar (color bar) screen IMG_1 as shown in FIG. 3A , and the button icons shown in FIG. 3B (icon) screen IMG_2 or other image screens. The arrangement and distribution of the pressure sensors 120_1 - 120_n shown in FIG. 1 can be analogized with reference to the relevant descriptions of the pressure sensors 120_1 - 120_n shown in FIG. 3A and FIG. 3B . However, the specific arrangement and distribution of the pressure sensors 120_1 - 120 — n shown in FIG. 1 should not be limited to the embodiments shown in FIGS. 3A and 3B . The pressure sensors 120_1˜120 — n can be set according to the actual design, which is not limited in this embodiment.

於圖2所示步驟S220中，圖1所示壓力感測器120_1～120_n可以感測於顯示面板110上的按壓事件。在一些實施例中，壓力感測器120_1～120_n中的每一個的第一端可以耦接至多個掃描線中的對應掃描線，壓力感測器120_1～120_n中的每一個的第二端可以耦接至處理電路130。處理電路130可以基於多個掃描線的掃描時序讀取壓力感測器120_1～120_n的壓力感測結果F1～Fn。In step S220 shown in FIG. 2 , the pressure sensors 120_1 - 120 — n shown in FIG. 1 can sense a press event on the display panel 110 . In some embodiments, the first end of each of the pressure sensors 120_1˜120_n may be coupled to a corresponding scan line of the plurality of scan lines, and the second end of each of the pressure sensors 120_1˜120_n may be Coupled to the processing circuit 130 . The processing circuit 130 can read the pressure sensing results F1˜Fn of the pressure sensors 120_1˜120 — n based on the scanning timing of the plurality of scanning lines.

舉例而言，圖3C是依照本發明一實施例說明觸控顯示裝置100的電路連接示意圖。於圖3C所示實施例中，觸控顯示裝置100可以包括壓力感測器120_11、120_12、120_13、120_14、120_15以及壓力感測器120_21、120_22、120_23、120_24、120_25。在細節上，壓力感測器120_11～120_15的第一端可以同時耦接至掃描線R1，壓力感測器120_21～120_25的第一端可以同時耦接至掃描線R2。壓力感測器120_11的第二端與壓力感測器120_21的第二端可以通過感測線C1耦接至處理電路130，壓力感測器120_12的第二端與壓力感測器120_22的第二端可以通過感測線C2耦接至處理電路130。依此類推，其餘壓力感測器120_13～120_15與120_23～120_25的第二端可以分別通過感測線C3、C4與C5耦接至處理電路130。For example, FIG. 3C is a schematic diagram illustrating the circuit connection of the touch display device 100 according to an embodiment of the present invention. In the embodiment shown in FIG. 3C , the touch display device 100 may include pressure sensors 120_11 , 120_12 , 120_13 , 120_14 , 120_15 and pressure sensors 120_21 , 120_22 , 120_23 , 120_24 , 120_25 . In detail, the first terminals of the pressure sensors 120_11 - 120_15 can be coupled to the scan line R1 at the same time, and the first terminals of the pressure sensors 120_21 - 120_25 can be coupled to the scan line R2 at the same time. The second end of the pressure sensor 120_11 and the second end of the pressure sensor 120_21 can be coupled to the processing circuit 130 through the sensing line C1, and the second end of the pressure sensor 120_12 and the second end of the pressure sensor 120_22 can be coupled to the processing circuit 130. It may be coupled to the processing circuit 130 through the sensing line C2. By analogy, the second ends of the remaining pressure sensors 120_13 - 120_15 and 120_23 - 120_25 can be coupled to the processing circuit 130 through the sensing lines C3 , C4 and C5 respectively.

在本實施例中，掃描線R1與R2可以分別耦接至處理電路130，以依據處理電路130的掃描時序選擇性地開啟壓力感測器120_11～120_15或是壓力感測器120_21～120_25。當處理電路130通過掃描線R1驅動（開啟）壓力感測器120_11～120_15時，壓力感測器120_11～120_15可以感測顯示面板110上按壓事件，並將壓力感測結果通過感測線C1～C5提供給處理電路130。當處理電路130通過掃描線R2驅動（開啟）壓力感測器120_21～120_25時，壓力感測器120_21～120_25可以感測顯示面板110上的按壓事件，並將壓力感測結果通過感測線C1～C5提供給處理電路130。處理電路130可以接收壓力感測器120_11～120_15與壓力感測器120_21～120_25的壓力感測結果，以進行後續的按壓位置計算/判定。In this embodiment, the scan lines R1 and R2 can be respectively coupled to the processing circuit 130 to selectively turn on the pressure sensors 120_11˜120_15 or the pressure sensors 120_21˜120_25 according to the scanning timing of the processing circuit 130 . When the processing circuit 130 drives (turns on) the pressure sensors 120_11-120_15 through the scanning line R1, the pressure sensors 120_11-120_15 can sense the pressing event on the display panel 110, and pass the pressure sensing result through the sensing lines C1-C5 provided to the processing circuit 130. When the processing circuit 130 drives (turns on) the pressure sensors 120_21-120_25 through the scan line R2, the pressure sensors 120_21-120_25 can sense the pressing event on the display panel 110, and pass the pressure sensing results through the sensing lines C1-25. C5 is provided to the processing circuit 130 . The processing circuit 130 may receive the pressure sensing results of the pressure sensors 120_11 - 120_15 and the pressure sensors 120_21 - 120_25 for subsequent calculation/determination of the pressing position.

須注意的是，圖3C所示壓力感測器120_11～120_15、壓力感測器120_21～120_25、掃描線R1、掃描線R2、感測線C1～C5與處理電路130的連接方式只是一種示範例。圖1所示壓力感測器120_1～120_n與處理電路130可以參照圖3C所示壓力感測器120_11～120_15、壓力感測器120_21～120_25與處理電路130的相關說明加以類推，然而圖1所示壓力感測器120_1～120_n與處理電路130的具體實施不應受限於圖3C所示實施例。It should be noted that the connections between the pressure sensors 120_11 - 120_15 , the pressure sensors 120_21 - 120_25 , the scanning lines R1 , R2 , the sensing lines C1 - C5 and the processing circuit 130 shown in FIG. 3C are just an example. The pressure sensors 120_1-120_n and the processing circuit 130 shown in FIG. 1 can be analogized with reference to the relevant descriptions of the pressure sensors 120_11-120_15, the pressure sensors 120_21-120_25 and the processing circuit 130 shown in FIG. The specific implementation of the pressure sensors 120_1 ˜ 120 — n and the processing circuit 130 should not be limited to the embodiment shown in FIG. 3C .

於圖2所示步驟S230中，圖1所示處理電路130可以依據壓力感測器120_1～120_n的壓力感測結果F1～Fn中的至少兩個來計算按壓事件的按壓位置。在一些實施例中，處理電路130可以預先設置（或動態調整）壓力閾值（threshold），以依據壓力閾值從壓力感測器120_1～120_n中選擇至少兩個作為多個經選壓力感測器。例如，處理電路130可以選擇壓力感測結果F1～Fn大於壓力閾值的壓力感測器來作為經選壓力感測器。或者，在另一些實施例中，處理電路130也可以依據壓力感測結果F1～Fn之間的關係來選用經選壓力感測器。例如，處理電路130可以選擇壓力感測結果F1～Fn中數值最大的至少兩個壓力感測器來作為經選壓力感測器。處理電路130可以依據這些經選壓力感測器的壓力感測結果進行多點分析，以計算按壓事件PE的按壓位置。In step S230 shown in FIG. 2 , the processing circuit 130 shown in FIG. 1 can calculate the pressing position of the pressing event according to at least two of the pressure sensing results F1 ˜ Fn of the pressure sensors 120_1 ˜ 120 — n. In some embodiments, the processing circuit 130 may preset (or dynamically adjust) a pressure threshold (threshold), so as to select at least two of the pressure sensors 120_1 - 120_n as a plurality of selected pressure sensors according to the pressure threshold. For example, the processing circuit 130 may select the pressure sensors whose pressure sensing results F1 ˜ Fn are greater than the pressure threshold as the selected pressure sensors. Alternatively, in some other embodiments, the processing circuit 130 may also select the selected pressure sensor according to the relationship between the pressure sensing results F1˜Fn. For example, the processing circuit 130 may select at least two pressure sensors with the largest values among the pressure sensing results F1 ˜ Fn as the selected pressure sensors. The processing circuit 130 can perform multi-point analysis according to the pressure sensing results of the selected pressure sensors to calculate the pressing position of the pressing event PE.

在一些實施例中，處理電路130可以週期性開啟壓力感測器120_1～120_n，以定期接收壓力感測結果F1～Fn。當處理電路130在一週期時間內分析壓力感測結果F1～Fn並未通過壓力閾值，或壓力感測結果F1～Fn之間的壓力強度差異太小或是其他原因，使得處理電路130所選擇的經選壓力感測器的數量不足兩個時，處理電路130可以不進行按壓位置的計算。In some embodiments, the processing circuit 130 may periodically turn on the pressure sensors 120_1 - 120_n to receive the pressure sensing results F1 - Fn periodically. When the processing circuit 130 analyzes the pressure sensing results F1-Fn within one cycle and fails to pass the pressure threshold, or the pressure intensity difference between the pressure sensing results F1-Fn is too small or other reasons, the processing circuit 130 selects When the number of selected pressure sensors is less than two, the processing circuit 130 may not perform the calculation of the pressing position.

壓力感測器120_1～120_n的位置為已知的元件置放位置。在一些實施例中，處理電路130可以依據多個經選壓力感測器的多個壓力感測結果及其位置計算多個經選壓力感測器的壓力重心，並以計算出來的壓力重心作為當前在顯示面板上110發生按壓事件PE的按壓位置。此外，在一些實施例中，按壓位置的按壓壓力可以為多個壓力感測結果中的至少兩個的力總和。舉例而言，假設圖1所示壓力感測器120_1～120_n皆被選為經選壓力感測器，並假設顯示面板110為X-Y二維平面，且壓力感測器120_1～120_n在X-Y二維平面上的座標分別表示為(x1, y1)、(x2, y2)、…、(xn, yn)。則在一些實施例中，處理電路130可以依據如下等式1、等式2與等式3來計算顯示面板110上的按壓位置的X-Y二維座標(xg, yg)及其按壓壓力Fg：

Figure 02_image001
等式1
Figure 02_image003
等式2
Figure 02_image005
等式3 The positions of the pressure sensors 120_1 - 120 — n are known component placement positions. In some embodiments, the processing circuit 130 may calculate the pressure center of gravity of the plurality of selected pressure sensors according to the plurality of pressure sensing results of the plurality of selected pressure sensors and their positions, and use the calculated pressure center of gravity as the The pressing position where the pressing event PE occurs currently on the display panel 110 . Furthermore, in some embodiments, the pressing pressure at the pressing position may be the sum of the forces of at least two of the plurality of pressure sensing results. For example, assume that the pressure sensors 120_1˜120_n shown in FIG. 1 are all selected as the selected pressure sensors, and assume that the display panel 110 is an XY two-dimensional plane, and the pressure sensors 120_1˜120_n are in the XY two-dimensional plane. The coordinates on the plane are respectively expressed as (x1, y1), (x2, y2), ..., (xn, yn). Then, in some embodiments, the processing circuit 130 can calculate the XY two-dimensional coordinates (xg, yg) and the pressing pressure Fg of the pressing position on the display panel 110 according to the following Equation 1, Equation 2 and Equation 3:
Figure 02_image001
Equation 1
Figure 02_image003
Equation 2
Figure 02_image005
Equation 3

舉例而言，圖4A、圖4B與圖4C是依照本發明一實施例說明按壓位置G的計算方式示意圖。請同時參照圖4A、圖4B以及圖4C。圖4A為依照本發明一實施例所繪示，顯示面板的上視透視示意圖。圖4A所示橫軸表示X-Y二維平面的X軸，而圖4A所示縱軸表示X-Y二維平面的y軸。圖4C為依照本發明一實施例所繪示，觸控顯示裝置100與壓力感測器120_1、120_3的側視透視示意圖。圖4C所示橫軸表示X-Y-Z三維空間的x軸，而圖4C所示縱軸表示X-Y-Z三維空間的Z軸。圖4B為以俯視視角繪示經選壓力感測器120_1、120_2、120_3與按壓位置G的相對位置示意圖。For example, FIG. 4A , FIG. 4B and FIG. 4C are schematic diagrams illustrating a calculation method of the pressing position G according to an embodiment of the present invention. Please refer to FIG. 4A , FIG. 4B and FIG. 4C at the same time. FIG. 4A is a schematic top perspective view of a display panel according to an embodiment of the present invention. The horizontal axis shown in FIG. 4A represents the x-axis of the X-Y two-dimensional plane, and the vertical axis shown in FIG. 4A represents the y-axis of the X-Y two-dimensional plane. FIG. 4C is a schematic side perspective view of the touch display device 100 and the pressure sensors 120_1 and 120_3 according to an embodiment of the present invention. The horizontal axis shown in FIG. 4C represents the x-axis in the X-Y-Z three-dimensional space, and the vertical axis shown in FIG. 4C represents the Z-axis in the X-Y-Z three-dimensional space. FIG. 4B is a schematic diagram showing the relative positions of the selected pressure sensors 120_1 , 120_2 , 120_3 and the pressing position G from a top view.

於圖4A與4B所示實施例中，假設在顯示面板110上的按壓位置為G，且壓力感測器120_1、120_2以及120_3為處理電路130所選擇的經選壓力感測器。再假設，按壓位置G在X-Y二維平面上的座標為(xg, yg)，經選壓力感測器120_1、120_2以及120_3在X-Y二維平面上的座標分別為(xa, ya)、(xb, yb)以及(xc, yc)，按壓位置G的按壓壓力為Fg，以及經選壓力感測器120_1、120_2以及120_3所感測的壓力感測結果（按壓壓力）分別為Fa、Fb以及Fc。基於等式1、等式2與等式3，按壓位置G的X-Y二維座標(xg, yg)及其按壓壓力Fg可以表示為如下等式4、等式5與等式6：

Figure 02_image007
等式4
Figure 02_image009
等式5
Figure 02_image011
等式6 In the embodiment shown in FIGS. 4A and 4B , it is assumed that the pressing position on the display panel 110 is G, and the pressure sensors 120_1 , 120_2 and 120_3 are the selected pressure sensors selected by the processing circuit 130 . Assume further that the coordinates of the pressing position G on the XY two-dimensional plane are (xg, yg), and the coordinates of the selected pressure sensors 120_1, 120_2, and 120_3 on the XY two-dimensional plane are (xa, ya), (xb , yb) and (xc, yc), the pressing pressure of the pressing position G is Fg, and the pressure sensing results (pressing pressure) sensed by the selected pressure sensors 120_1 , 120_2 and 120_3 are Fa, Fb and Fc respectively. Based on Equation 1, Equation 2 and Equation 3, the XY two-dimensional coordinates (xg, yg) of the pressing position G and its pressing pressure Fg can be expressed as the following Equation 4, Equation 5 and Equation 6:
Figure 02_image007
Equation 4
Figure 02_image009
Equation 5
Figure 02_image011
Equation 6

在一些實施例中，壓力感測器120_1、120_2以及（或是）120_3可以為垂直壓力感測器，壓力感測結果Fa、Fb以及（或是）Fc可以為垂直壓力值。舉例而言，於圖4C所示實施例中，假設經選壓力感測器120_1、120_3為垂直壓力感測器，則壓力感測器120_1、120_3的壓力感測結果Fa、Fc可以為與Z軸平行的垂直壓力值，以去除在X軸以及Y軸上的壓力分量。此外，在本實施例中，經選壓力感測器120_1～120_3可以設置於顯示面板110下側的電路基板PL下方。經選壓力感測器120_1～120_3可以透過電路基板PL與處理電路130耦接。其中電路基板PL例如可以是軟性印刷電路板（Flexible Printed Circuit，FPC）、印刷電路板（Printed circuit board，PCB）或是其他電路板，本實施例並不設限。In some embodiments, the pressure sensors 120_1 , 120_2 and (or) 120_3 may be vertical pressure sensors, and the pressure sensing results Fa, Fb and (or) Fc may be vertical pressure values. For example, in the embodiment shown in FIG. 4C , assuming that the selected pressure sensors 120_1 and 120_3 are vertical pressure sensors, the pressure sensing results Fa and Fc of the pressure sensors 120_1 and 120_3 can be equal to Z Axis-parallel vertical pressure values to remove pressure components on the X and Y axes. In addition, in this embodiment, the selected pressure sensors 120_1 - 120_3 may be disposed under the circuit substrate PL on the lower side of the display panel 110 . The selected pressure sensors 120_1˜120_3 may be coupled to the processing circuit 130 through the circuit substrate PL. The circuit substrate PL can be, for example, a flexible printed circuit board (Flexible Printed Circuit, FPC), a printed circuit board (Printed circuit board, PCB) or other circuit boards, which is not limited in this embodiment.

綜上所述，本發明諸實施例所述的觸控顯示裝置100及顯示面板110的定位方法，可以配置多個壓力感測器120_1～120_n於顯示面板110的下方。壓力感測器120_1～120_n可以感測顯示面板110上的按壓事件PE。處理電路130可以依據壓力感測器120_1～120_n的壓力感測結果F1～Fn中的至少兩個來計算/定位發生於顯示面板110上的按壓事件PE的按壓位置G。如此一來，所述觸控顯示裝置100具有成本低、複雜度低、容易實現等功效。因此，觸控顯示裝置100更適合簡單應用。To sum up, in the positioning methods of the touch display device 100 and the display panel 110 described in the embodiments of the present invention, a plurality of pressure sensors 120_1 - 120 — n can be arranged under the display panel 110 . The pressure sensors 120_1˜120 — n can sense a press event PE on the display panel 110 . The processing circuit 130 may calculate/locate the pressing position G of the pressing event PE occurring on the display panel 110 according to at least two of the pressure sensing results F1 -Fn of the pressure sensors 120_1 - 120_n. In this way, the touch display device 100 has the effects of low cost, low complexity, and easy implementation. Therefore, the touch display device 100 is more suitable for simple applications.

雖然本發明已以實施例揭露如上，然其並非用以限定本發明，任何所屬技術領域中具有通常知識者，在不脫離本發明的精神和範圍內，當可作些許的更動與潤飾，故本發明的保護範圍當視後附的申請專利範圍所界定者為準。Although the present invention has been disclosed above with the embodiments, it is not intended to limit the present invention. Anyone with ordinary knowledge in the technical field may make some changes and modifications without departing from the spirit and scope of the present invention. The scope of protection of the present invention should be defined by the scope of the appended patent application.

100：觸控顯示裝置 110：顯示面板 120_1～120_3、120_11～120_15、120_21～120_25、120_n：壓力感測器 130：處理電路 C1、C2、C3、C4、C5：感測線 F1、F2、Fn、Fa、Fb、Fc：壓力感測結果 Fg：按壓壓力 G：按壓位置 IMG、IMG_1、IMG_2：畫面 PE：按壓事件 PL：電路基板 R1、R2：掃描線 S210～S230：步驟 X、Y、Z：座標軸 x1、x2、xn、xa、xb、xc、xg、y1、y2、yn、ya、yb、yc、yg：座標 100: touch display device 110: display panel 120_1～120_3, 120_11～120_15, 120_21～120_25, 120_n: pressure sensor 130: Processing circuit C1, C2, C3, C4, C5: Sensing lines F1, F2, Fn, Fa, Fb, Fc: Pressure sensing results Fg: pressing pressure G: press position IMG, IMG_1, IMG_2: Screens PE: Press event PL: circuit board R1, R2: scan lines S210～S230: steps X, Y, Z: coordinate axes x1, x2, xn, xa, xb, xc, xg, y1, y2, yn, ya, yb, yc, yg: coordinates

圖1是依照本發明一實施例的觸控顯示裝置的電路方塊（circuit block）示意圖。 圖2是依照本發明一實施例的顯示面板的定位方法的流程圖。 圖3A與圖3B是依照本發明一實施例說明觸控顯示裝置的不同使用情境的上視透視示意圖。 圖3C是依照本發明一實施例說明觸控顯示裝置的電路連接示意圖。 圖4A為依照本發明一實施例所繪示，顯示面板的上視透視示意圖。 圖4B是依照本發明一實施例說明按壓位置的計算方式示意圖。 圖4C依照本發明一實施例所繪示，顯示面板與壓力感測器的側視透視示意圖。 FIG. 1 is a schematic diagram of a circuit block of a touch display device according to an embodiment of the invention. FIG. 2 is a flowchart of a positioning method for a display panel according to an embodiment of the invention. 3A and 3B are top perspective schematic diagrams illustrating different usage scenarios of the touch display device according to an embodiment of the present invention. FIG. 3C is a schematic diagram illustrating a circuit connection of a touch display device according to an embodiment of the present invention. FIG. 4A is a schematic top perspective view of a display panel according to an embodiment of the present invention. FIG. 4B is a schematic diagram illustrating a calculation method of a pressing position according to an embodiment of the present invention. FIG. 4C is a schematic side perspective view of a display panel and a pressure sensor according to an embodiment of the present invention.

100:觸控顯示裝置 110:顯示面板 120_1、120_2、120_n:壓力感測器 130:處理電路 F1、F2、Fn:壓力感測結果 IMG:畫面 PE:按壓事件 100: Touch display device 110: display panel 120_1, 120_2, 120_n: pressure sensor 130: processing circuit F1, F2, Fn: Pressure sensing results IMG: picture PE: Press event

Claims (12)

一種觸控顯示裝置，包括：一顯示面板，用以顯示一畫面；多個壓力感測器，配置於該顯示面板下方，其中該些壓力感測器用以感測於該顯示面板上的一按壓事件以提供多個壓力感測結果；以及一處理電路，耦接至該些壓力感測器，其中該處理電路基於多個掃描線的一掃描時序讀取該些壓力感測器的該些壓力感測結果，並且依據該些壓力感測結果中的至少兩個計算該按壓事件的一按壓位置。 A touch display device, comprising: a display panel for displaying a picture; a plurality of pressure sensors arranged under the display panel, wherein the pressure sensors are used for sensing a press on the display panel events to provide a plurality of pressure sensing results; and a processing circuit coupled to the pressure sensors, wherein the processing circuit reads the pressures of the pressure sensors based on a scan timing of a plurality of scan lines sensing results, and calculating a pressing position of the pressing event according to at least two of the pressure sensing results. 如請求項1所述的觸控顯示裝置，其中該些壓力感測器的每一個的一第一端耦接至所述多個掃描線中的一對應掃描線，該些壓力感測器的每一個的一第二端耦接至該處理電路。 The touch display device according to claim 1, wherein a first end of each of the pressure sensors is coupled to a corresponding scan line in the plurality of scan lines, and the pressure sensors A second terminal of each is coupled to the processing circuit. 如請求項1所述的觸控顯示裝置，其中該處理電路依據一壓力閾值與該些壓力感測結果之間的關係從該些壓力感測器中選擇至少兩個作為多個經選壓力感測器，以及該處理電路依據該些經選壓力感測器的多個位置與該些經選壓力感測器的該些壓力感測結果來計算該按壓位置。 The touch display device as claimed in claim 1, wherein the processing circuit selects at least two of the pressure sensors as a plurality of selected pressure sensors according to the relationship between a pressure threshold and the pressure sensing results sensors, and the processing circuit calculates the pressing position according to the positions of the selected pressure sensors and the pressure sensing results of the selected pressure sensors. 如請求項3所述的觸控顯示裝置，其中該處理電路依據該些經選壓力感測器的該些壓力感測結果與該些經選壓力感測器的該些位置計算該些經選壓力感測器的一壓力重心，以及以該壓力重心作為該按壓位置。 The touch display device as described in claim 3, wherein the processing circuit calculates the selected pressure sensors according to the pressure sensing results of the selected pressure sensors and the positions of the selected pressure sensors A pressure center of gravity of the pressure sensor, and using the pressure center of gravity as the pressing position. 如請求項1所述的觸控顯示裝置，其中該些壓力感測器為垂直壓力感測器，以及該些壓力感測結果為垂直壓力值。 The touch display device as claimed in claim 1, wherein the pressure sensors are vertical pressure sensors, and the pressure sensing results are vertical pressure values. 如請求項5所述的觸控顯示裝置，其中該按壓位置的一按壓壓力為該些壓力感測結果中的該至少兩個的力總和。 The touch display device as claimed in claim 5, wherein a pressing force of the pressing position is the sum of the force of at least two of the pressure sensing results. 一種顯示面板的定位方法，包括：配置多個壓力感測器於該顯示面板下方；透過該些壓力感測器感測於該顯示面板上的一按壓事件；以及透過一處理電路基於多個掃描線的一掃描時序讀取該些壓力感測器的該些壓力感測結果，並且依據該些壓力感測器的多個壓力感測結果中的至少兩個計算該按壓事件的一按壓位置。 A method for positioning a display panel, comprising: disposing a plurality of pressure sensors under the display panel; sensing a pressing event on the display panel through the pressure sensors; and based on a plurality of scans through a processing circuit A scanning sequence of lines reads the pressure sensing results of the pressure sensors, and calculates a pressing position of the pressing event according to at least two of the pressure sensing results of the pressure sensors. 如請求項7所述的定位方法，其中該些壓力感測器的每一個的一第一端耦接至所述多個掃描線中的一對應掃描線，該些壓力感測器的每一個的一第二端耦接至該處理電路，以及該定位方法更包括：透過該處理電路基於該些掃描線的一掃描時序讀取該些壓力感測器的該些壓力感測結果。 The positioning method as described in claim 7, wherein a first end of each of the pressure sensors is coupled to a corresponding scan line in the plurality of scan lines, and each of the pressure sensors A second end of the sensor is coupled to the processing circuit, and the positioning method further includes: reading the pressure sensing results of the pressure sensors based on a scanning timing of the scanning lines through the processing circuit. 如請求項7所述的定位方法，更包括：透過該處理電路依據一壓力閾值與該些壓力感測結果之間的關係從該些壓力感測器中選擇至少兩個作為多個經選壓力感測器；以及透過該處理電路依據該些經選壓力感測器的多個位置與該些 經選壓力感測器的該些壓力感測結果來計算該按壓位置。 The positioning method according to claim 7, further comprising: selecting at least two of the pressure sensors as a plurality of selected pressures according to the relationship between a pressure threshold and the pressure sensing results through the processing circuit sensors; and through the processing circuit according to the plurality of positions of the selected pressure sensors and the The pressing position is calculated by selecting the pressure sensing results of the pressure sensor. 如請求項9所述的定位方法，更包括：由該處理電路依據該些經選壓力感測器的該些壓力感測結果與該些經選壓力感測器的該些位置計算該些經選壓力感測器的一壓力重心；以及以該壓力重心作為該按壓位置。 The positioning method as described in claim 9, further comprising: calculating, by the processing circuit, the experience based on the pressure sensing results of the selected pressure sensors and the positions of the selected pressure sensors selecting a pressure center of gravity of the pressure sensor; and using the pressure center of gravity as the pressing position. 如請求項7所述的定位方法，其中該些壓力感測器為垂直壓力感測器，以及該些壓力感測結果為垂直壓力值。 The positioning method according to claim 7, wherein the pressure sensors are vertical pressure sensors, and the pressure sensing results are vertical pressure values. 如請求項11所述的定位方法，其中該按壓位置的一按壓壓力為該些壓力感測結果中的該至少兩個的力總和。 The positioning method as claimed in claim 11, wherein a pressing force of the pressing position is a force sum of the at least two of the pressure sensing results.
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