201112066 六、發明說明： 【發明所屬之技術領域】 本發明係有關於一種軟性觸控顯示裝置，特別是有關 於具有軟性觸控感測薄膜之軟性觸控顯示裝置及其感測方 法。 【先前技術】 在/肖費f生電子產σσ的應用中觸控式面板⑼uCh panei) 已廣泛使用在可攜式電子產品中，例如個人數位助理 (personal digital assistant，PDA)及行動電話等。目前， 觸控面板包括電阻式、電容式、超音波式以及紅外線感測 式等觸控面板，其中電容式觸控面板又可分為投射式觸控 面板、表面觸控面板等。美國專利第7，辦，奶號揭露一種 電容式觸控面板的感測|置以及方法，其藉由感測由乂轴 和Y軸所構成之導體陣列的電容值，並將得到的電容值進 行加權平均計算後，而偵測到觸控的發生。 對使用者而言，一些電子產品（例如電子書等）且有 可撓曲、㈣之特性，其具有方便收納或是攜帶的優點。 因此，軟性觸控顯示裝置已逐漸成為可撓曲之軟性電子產 品的關鍵轉狀-。軟性觸控顯示数的基板^有可 撓曲之特性，因此在運送、使用或收納的情況下可能 持在撓曲狀態H當基板在撓曲的狀態下，薄 可能會因應力或溫度的影響而造成材料結構或是堆叫 的改變’進而導致感測元件發生電性變異（例如導ς; 或疊層電容變化）。對軟性觸控顯示裝置來說，這些變異 201112066 將會導致觸控偵測會不正常’進而降低感測之靈敏度。 【發明内容】 本發明提供一種軟性觸控感測薄膜，包括：一互動感 測單元以及一參考感測單元。上述互動感測單元設置於一 可觸碰區内，以感測一觸控事件並輸出一感測資料。上述 參考感測單元設置於上述互動感測單元之至少一側且位於 上述可觸碰區外，以提供一參考資料。 再者，本發明提供一種軟性觸控顯示裝置，包括：一 軟性觸控制薄膜以及-制單元。上述軟性觸控感測薄 膜包括：-互動感測單元’設置於一可觸碰區内，用以感 測-觸控事件並輸出—制㈣；以及，— ' 設置於上述互喊測單元之至少位可區 用以提供-參考資料。上述_單元，用以根據上述 感測—貝料以及上述參考資料來_上述觸控事件之一觸控 丹嘗 感測薄膜ίΐ 種感測方法’適用於-軟性觸控 元以及、失Β上迷軟性觸控感測薄膜包括一互動感測單 參!感測單元。當一觸控事件發生時’從上述互 到一感測資料。當上述觸控事件發生時，從 及上ΐ早70得到""參考資料。根據上述感測資料以 考資料，_出上述觸控事件之-觸控位置上 ^軟性觸控感測薄膜是設置於—顯 動感測單元俜今罟於μ、+.麻 ^ ，、中上述互 係叹置於上述顯示裝置之可觸碰區内，而上述 201112066 參考感測單元係設置於上述互動感測單元之至少一側且位 於上述顯示裝置之可觸碰區外。 再者，本發明提供一種感測方法，適用於一軟性觸控 感測薄膜，其中上述軟性觸控感測薄膜包括一互動感測單 元以及-參考感測單元。週期性地從上述參考感測單元讀 取參考資料。當上述參考資料與一暫存資料之間的差值 大於一臨界值，根據上述參考資料來更新上述暫存資料。 當-觸控事件發生時，從上述互動感測單元讀取一感測資 ❿ 《。根據上述感測資料以及已更新之上述暫存資料，偵測 f上述觸控事件之—觸控位置。上述軟性觸㈣測薄膜是 設置於-顯示裝置内，其中上述互動感測單元係設置於上 述顯示裝置之可觸碰區内，而上述參考感測單元係設置於 上述互動感測單元之至少一側且位於上述顯示裝置之可觸 碰區外。 【實施方式】 為讓本發明特徵能更明顯易懂，下文特舉出較佳實施 例，並配合所附圖式，作詳細說明如下： 實施例 -第1圖係顯示根據本發明一實施例所述之軟性觸控顯 :裝置100 IU生觸控顯不裝置1〇〇包括軟性觸控感測薄 =110以及制單元15G。在此加种，祕觸控顯示 褒置100可以是投射式電容觸控顯示器。軟性觸控感測薄 201112066 膜110包括互動感測單元12〇以及參考感測單元13〇，其 中互動感測單元120係設置於軟性觸控顯示裝置100的可 觸碰區140内，而參考感測單元130係設置於互動感測單 元120之兩侧且位於可觸碰區14〇外，即參考感測單元 與可觸碰區140為不重疊。 多考第2圖’第2圖係顯示第1圖中軟性觸控感測薄 膜110之示意圖。互動感測單元120係由複數感測元件22〇 所組成之一感測陣列，而參考感測單元130係在該感測陣 列的X軸以及γ轴上额外增加感測元件21〇，使得該感測 陣列各增加-條行與列。在第2圖中，互動感測單元 内的感測元件22G與參考感測單元13G内的感測元件21〇 為相同7L件’即在製程、材料、結構與佈局方面皆為相同。 因此，當軟性觸控顯示震置1〇〇 $到撓曲應力 stress)或疋溫度影響時’感測元件2i()以及感測元件22〇 大致上將會具有相_紐變異，尤其是阻抗方面。缺而， :據不同的應用以及環境，參考感測單元13〇内的感測元 件210亦可設計成不同於互動感測單元！20内的感測元件 二再„者’參考感測單元130亦可設置在互動感測單元 120之早一側，即χ軸或是γ軸。 參^第i圖，偵測單元15〇可分別從互動感測單元 以及參考感測單幻3〇得到感測陣列中每一行以及每 接著，_單元150可根據來自互動感測單 的阻r次2貝抖&丨·心和Ze I &以及參考感測單元13 0 在觸二::，_Zref2而_出是否有觸控事件發生，並且 觸控事件發生時，_出其觸控位置。值得注意的是， 201112066 =感測單元u〇係設置於可觸碰區14〇外， 應到觸控事件的發生，即㈣者無法補鱗考^感BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flexible touch display device, and more particularly to a flexible touch display device having a soft touch sensing film and a sensing method thereof. [Prior Art] The touch panel (9) uCh panei) has been widely used in portable electronic products, such as personal digital assistants (PDAs) and mobile phones, in the application of σσ. At present, the touch panel includes a touch panel such as a resistive type, a capacitive type, an ultrasonic type, and an infrared sensing type. The capacitive touch panel can be further divided into a projected touch panel and a surface touch panel. U.S. Patent No. 7, S., discloses a sensing method and method for a capacitive touch panel, which senses a capacitance value of a conductor array composed of a x-axis and a Y-axis, and obtains a capacitance value. After the weighted average calculation is performed, the occurrence of the touch is detected. For the user, some electronic products (such as e-books, etc.) have the characteristics of flexibility and (4), which have the advantages of convenient storage or carrying. Therefore, soft touch display devices have gradually become a key change in flexible flexible electronic products. The substrate with soft touch display has flexible characteristics, so it may be in a flexing state when transported, used, or stored. When the substrate is in a flexed state, thin may be affected by stress or temperature. This causes a change in the structure of the material or the stacking', which in turn causes electrical variations in the sensing element (eg, lead-in; or lamination capacitance changes). For soft touch display devices, these variations 201112066 will cause the touch detection to be abnormal, which in turn reduces the sensitivity of the sensing. SUMMARY OF THE INVENTION The present invention provides a soft touch sensing film comprising: an interactive sensing unit and a reference sensing unit. The interactive sensing unit is disposed in a touchable area to sense a touch event and output a sensing data. The reference sensing unit is disposed on at least one side of the interaction sensing unit and located outside the touchable area to provide a reference material. Furthermore, the present invention provides a flexible touch display device comprising: a soft touch control film and a unit. The soft touch sensing film comprises: an interactive sensing unit disposed in a touchable area for sensing a touch event and outputting (four); and, - ' being disposed in the mutual sensing unit At least the location can be used to provide - reference material. The above-mentioned unit is used for the above-mentioned sensing-beef material and the above-mentioned reference data. One of the above-mentioned touch events, the touch sensing film, the sensing method is applicable to the soft touch element and the failure. The fascinating touch sensing film includes an interactive sensing single-parameter! sensing unit. When a touch event occurs, the data is sensed from the above. When the above touch event occurs, the "" reference material is obtained from the top and the top. According to the above-mentioned sensing data, the soft touch sensing film is disposed at the touch position of the above-mentioned touch event, and is disposed in the display unit, the current sensing unit, and the above-mentioned The mutual sigh is placed in the touchable area of the display device, and the 201112066 reference sensing unit is disposed on at least one side of the interactive sensing unit and outside the touchable area of the display device. Furthermore, the present invention provides a sensing method suitable for a flexible touch sensing film, wherein the soft touch sensing film comprises an interactive sensing unit and a reference sensing unit. The reference material is periodically read from the above reference sensing unit. When the difference between the reference material and the temporary data is greater than a threshold, the temporary data is updated according to the reference material. When the touch event occurs, a sensing asset is read from the interactive sensing unit. Detecting the touch position of the touch event based on the sensed data and the updated temporary data. The soft touch (four) test film is disposed in the display device, wherein the interactive sensing unit is disposed in the touchable area of the display device, and the reference sensing unit is disposed in at least one of the interactive sensing units. The side is located outside the touchable area of the above display device. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In order to make the features of the present invention more comprehensible, the preferred embodiments are described below, and are described in detail below with reference to the accompanying drawings: Embodiments - Figure 1 shows an embodiment according to the present invention. The soft touch display device 100 IU includes a soft touch sensing thin film=110 and a manufacturing unit 15G. In addition, the secret touch display device 100 can be a projected capacitive touch display. The flexible touch sensing thin film 201112066 includes an interactive sensing unit 12A and a reference sensing unit 13A, wherein the interactive sensing unit 120 is disposed in the touchable area 140 of the flexible touch display device 100, and the reference sense The measuring unit 130 is disposed on both sides of the interaction sensing unit 120 and outside the touchable area 14 , that is, the reference sensing unit and the touchable area 140 do not overlap. Fig. 2 of the multi-test is a schematic view showing the soft touch sensing film 110 in Fig. 1. The interaction sensing unit 120 is a sensing array composed of a plurality of sensing elements 22, and the reference sensing unit 130 additionally adds a sensing element 21〇 on the X-axis and the γ-axis of the sensing array, such that The sense arrays are each incremented - rows and columns. In Fig. 2, the sensing element 22G in the interactive sensing unit and the sensing element 21 in the reference sensing unit 13G are the same 7L piece, i.e., the same in terms of process, material, structure and layout. Therefore, when the soft touch display is set to 1 〇〇 $ to flex stress stress or 疋 temperature influence, the sensing element 2i () and the sensing element 22 〇 will generally have a phase-to-new variation, especially impedance. aspect. However, depending on the application and environment, the sensing element 210 in the reference sensing unit 13 can also be designed to be different from the interactive sensing unit! The sensing component in the 20th can also be disposed on the early side of the interactive sensing unit 120, that is, the x-axis or the γ-axis. Each row in the sensing array is obtained from the interactive sensing unit and the reference sensing single illusion, respectively, and each _ unit 150 can be based on the resistance from the interactive sensing list, and the zebra and the heart and the Ze I & and the reference sensing unit 130 0 in the touch two::, _Zref2 and _ out whether a touch event occurs, and when the touch event occurs, _ out of its touch position. It is worth noting that 201112066 = sensing unit U〇 is set in the touchable area 14〇, should be the occurrence of touch events, that is, (4) can not fill the scale test
130。因此，益論敕性縮批甚 心、早7C 裝置100遭受到應力形變（例 如撓^或是溫度的任何影響，來自參考感測單元130的 =資料2“可作為參考阻抗（即—種參考電2 準)’，測單元150對互動感測單元12〇的阻抗資ς 梦署inn 吏用麵手指沒有碰觸職性觸控顯示 " 之可觸碰區140時（即無觸控事件發生），互動 ，單，3广所提供之感測阻抗w和與參4 '、;疋，偵測單70150會判斷無觸控事件發生。反之， 碰區140之任一位置時，將會在該觸碰 ^ 生艾化，例如對應於該觸碰位置之X軸以及γ ，的阻抗會有變化產生。因此，偵測單元15〇會侦測到對 f於=碰位置之χ轴以及γ軸的感測阻抗以及參考感測 :兀〇所&供之參考阻抗之間的差值將會超過所設定的 ^界值，進而可判斷出手指的觸碰位置。 第3圖係顯示根據本發明—實施例所述之感測方法 _ L用於具有互動感測單元和參考感測單元之軟性觸控 頦丁裝置首先，當一觸控事件發生於軟性觸控顯示裝置 =觸碰區時’偵測單元會從互動感測單元之感測陣列内 付^母-X轴以及每—Υ軸之感測阻抗（步驟S则。 接著，元會從參考感測單元得到參考阻抗（步驟 )接I 4貞測單it會根據每—感測阻抗與參考阻抗 201112066 之間的差值而偵測出該觸碰位置（步驟S306)，即對應於 該觸碰位置之X轴以及Y軸的感測阻抗會與參考阻抗之間 具有明顯的差值。 第4圖係顯示根據本發明另一實施例所述之感測方法 400,適用於具有互動感測單元和參考感測單元之軟性觸控 顯示裝置。首先，偵測單元會週期性地從參考感測單元得 到參考阻抗Zref (步驟S402)。接著，偵測單元150會計 算目前所得到之參考阻抗Zref與一暫存值Zvalue之差異，而 求得參考阻抗之變化量AZ(步驟S404)，其中暫存值Zvalue 為先前所得到之參考阻抗的阻抗值。接著，當參考阻抗之 變化量AZ超過一特定臨界值Zth時，偵測單元會將該暫存 值Zvalue更新為目前所得到之參考阻抗Zref的阻抗值（步驟 S406)。接著，當一觸控事件發生時，偵測單元會根據互 動感測單元内每一軸之感測阻抗與暫存值Zvalue之間的差 值而偵測出該觸碰位置（步驟S408)。此外，偵測單元亦 可根據暫存值Zvalue對互動感測單元内的每一感測元件進 行校正。 在本發明中，互動感測單元内的每一感測阻抗與參考 感測單元之參考阻抗的差異只和手指碰觸的強度有關。無 論是撓曲或是溫度所造成之導電層的電阻變化，或堆疊結 構變化所造成的電容變化，皆不會反映在感測阻抗與參考 阻抗的差異上。因此，可提高觸控感測之辨識率，並可避 免因撓曲所產生之電性變化所造成的誤動作。 本發明雖以較佳實施例揭露如上，然其並非用以限定 本發明的範圍，任何熟習此項技藝者，在不脫離本發明之 201112066 精神和範圍内，當可做些許的更動與潤飾，因此本發明之 保護範圍當視後附之申請專利範圍所界定者為準。 201112066 【圖式簡單說明】 第1圖係赫根縣發明-實_所述讀性觸控顯 示裝置； ’ 第2圖係顯示第！圖中軟性觸控感測薄膜之示意圖； 第3圖係顯示根據本發明一實施例所述之感測方法， 適用於具有互誠測單元和參考感測單元之軟性觸控顯示 裝置；以及 、第4圖係顯示根據本發明另一實施例所述之感測方 去，適用於具有互動感測單元和參考感測單元之軟性觸控 顯示裝置。 【主要元件符號說明】 100〜軟性觸控顯示襞置； 110〜軟性觸控感測薄膜； 120〜互動感測單元； 130〜參考感測單元； 140〜可觸碰區； 150〜偵測單元； 210、220〜感測元件；130. Therefore, the benefits of the contraction are very good, the early 7C device 100 suffers from stress deformation (such as the deflection or any influence of temperature, the data from the reference sensing unit 130 = data 2 " can be used as a reference impedance (ie - reference (2), the impedance of the measuring unit 150 to the interactive sensing unit 12〇 梦 in in 吏 手指 手指 手指 手指 手指 手指 手指 手指 手指 手指 手指 手指 手指 140 ( ( ( ( ( ( ( ( ( ( ( Occurs, interaction, single, 3G provide the sensing impedance w and the reference 4 ',; 疋, the detection unit 70150 will judge the occurrence of no touch event. Conversely, when hitting any position of the area 140, will When the touch is activated, for example, the impedance corresponding to the X-axis and γ of the touch position is changed. Therefore, the detecting unit 15 detects the axis of the f-touch position and The sensing impedance of the γ-axis and the reference sensing: the difference between the reference impedance and the reference impedance will exceed the set threshold value, and the finger touch position can be determined. Figure 3 shows Sensing method _ L according to the present invention - for having an interactive sensing unit and a reference sensing list First, the soft touch device is first. When a touch event occurs in the soft touch display device=touch area, the detection unit will pay the mother-X axis and each from the sensing array of the interactive sensing unit. —the sensed impedance of the x-axis (step S. Then, the reference impedance obtained from the reference sensing unit (step) is connected to the I 4 test list. It will be based on the difference between each sensed impedance and the reference impedance 201112066. And detecting the touch position (step S306), that is, the sensing impedance corresponding to the X-axis and the Y-axis of the touch position has a significant difference from the reference impedance. FIG. 4 shows the invention according to the present invention. The sensing method 400 of another embodiment is applicable to a soft touch display device having an interactive sensing unit and a reference sensing unit. First, the detecting unit periodically obtains a reference impedance Zref from the reference sensing unit ( Step S402). Then, the detecting unit 150 calculates the difference between the currently obtained reference impedance Zref and a temporary storage value Zvalue, and obtains the reference impedance change amount AZ (step S404), wherein the temporary storage value Zvalue is the previous one. Obtained the impedance value of the reference impedance Then, when the reference impedance change amount AZ exceeds a certain threshold value Zth, the detecting unit updates the temporary value Zvalue to the impedance value of the currently obtained reference impedance Zref (step S406). Then, when one touch When the control event occurs, the detecting unit detects the touch position according to the difference between the sensing impedance of each axis in the interaction sensing unit and the temporary storage value Zvalue (step S408). Each sensing element in the interactive sensing unit can be corrected according to the temporary value Zvalue. In the present invention, the difference between each sensing impedance in the interactive sensing unit and the reference impedance of the reference sensing unit is only with the finger. The intensity of the touch is related. The change in resistance of the conductive layer caused by deflection or temperature, or the change in capacitance caused by the change in stack structure, is not reflected in the difference between the sensed impedance and the reference impedance. Therefore, the recognition rate of the touch sensing can be improved, and the malfunction caused by the electrical variation caused by the deflection can be avoided. The present invention is disclosed in the above preferred embodiments, and is not intended to limit the scope of the present invention. Any one skilled in the art can make some modifications and refinements without departing from the spirit and scope of the invention. Therefore, the scope of the invention is defined by the scope of the appended claims. 201112066 [Simple description of the diagram] The first picture is the invention of Hegen County - the actual read-based touch display device; ’ The second picture shows the first! FIG. 3 is a schematic diagram showing a sensing method according to an embodiment of the present invention, which is applicable to a soft touch display device having a mutual measurement unit and a reference sensing unit; FIG. 4 is a diagram showing a sensing touch panel according to another embodiment of the present invention, which is suitable for a soft touch display device having an interactive sensing unit and a reference sensing unit. [Main component symbol description] 100~soft touch display device; 110~soft touch sensing film; 120~interactive sensing unit; 130~reference sensing unit; 140~touchable area; 150~detecting unit 210, 220~ sensing component;
Zc丨-Zc4、ZrrZr4〜感測阻抗；以及 Zrefi-Zref2〜參考阻抗。Zc丨-Zc4, ZrrZr4~sensing impedance; and Zrefi-Zref2~reference impedance.