TWI460628B - Tactile feedback touch screen with curved surface and tactile feedback driving method thereof - Google Patents
Tactile feedback touch screen with curved surface and tactile feedback driving method thereof Download PDFInfo
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Description
本發明係有關於一種觸感回饋觸控螢幕及其驅動方法，且特別有關於一種在曲面狀的觸控面各位置皆能獲得相同觸感回饋之觸感回饋觸控螢幕及其驅動方法。The invention relates to a tactile feedback touch screen and a driving method thereof, and particularly relates to a tactile feedback touch screen capable of obtaining the same tactile feedback in each position of a curved touch surface and a driving method thereof.
現今，觸控螢幕已廣泛地運用於各種裝置，如智慧型手機或平板電腦等。為了增加使用者操作觸控螢幕的真實感，具有觸感回饋功能的觸控螢幕係被提出。觸感回饋技術中包括使用小型馬達或壓電元件等振動式的觸感回饋，以及使用電場來控制手指與觸控面間摩擦力的觸感回饋。Today, touch screens are widely used in a variety of devices, such as smart phones or tablets. In order to increase the user's realism in operating the touch screen, a touch screen with a tactile feedback function is proposed. The tactile feedback technique includes vibratory tactile feedback using a small motor or a piezoelectric element, and tactile feedback using an electric field to control the friction between the finger and the touch surface.
然而習知的電場觸感回饋技術若應用於曲面的觸控螢幕時，感應電場的強度會因為觸控螢幕表面的絕緣層厚度不同而有所改變，使得手指觸控該曲面的觸控螢幕時，無法在曲面上的不同位置獲得相同的觸感回饋。However, when the conventional electric field touch feedback technology is applied to a curved touch screen, the intensity of the induced electric field may change due to the thickness of the insulating layer on the surface of the touch screen, so that when the finger touches the touch screen of the curved surface, Cannot get the same tactile feedback at different locations on the surface.
本發明係為了解決上述的問題，而提出一種曲面觸感回饋觸控螢幕及其驅動方法，使操作者的手指觸控曲面的觸控螢幕各位置時皆能獲得大致相同的觸感回饋。In order to solve the above problems, the present invention provides a curved touch feedback touch screen and a driving method thereof, so that the operator can obtain substantially the same tactile feedback when the touch screen of the curved surface of the touch surface is touched.
本發明係提供一種曲面觸感回饋觸控螢幕，包括：一絕緣層，具有曲面狀的一上表面，以及平面狀的一下表面，該上表面用以作為一觸控面；一透明導電層，鋪設於該下表面且具有複數透明電極；以及一電源模組，輸出一驅動電壓至該透明導電層，以使得該觸控面上不同位置的電場強度大致相同。The invention provides a curved touch feedback touch screen, comprising: an insulating layer having a curved upper surface and a planar lower surface, the upper surface serving as a touch surface; a transparent conductive layer, Laying on the lower surface and having a plurality of transparent electrodes; and a power module outputting a driving voltage to the transparent conductive layer such that electric field strengths at different positions on the touch surface are substantially the same.
根據本發明的一個實施例，位於該絕緣層厚度較厚的位置之該透明電極的厚度係比位於該絕緣層厚度較薄的位置之該透明電極的厚度厚。According to an embodiment of the present invention, the thickness of the transparent electrode at a position where the thickness of the insulating layer is thick is thicker than the thickness of the transparent electrode at a position where the thickness of the insulating layer is thin.
上述的曲面觸感回饋觸控螢幕，更包括：一觸控面板，感測該觸控面的一觸控位置；以及一控制模組，根據該觸控位置以控制該電源模組輸出該驅動電壓至相應該觸控位置的該等透明電極。The touch-sensitive feedback touch screen includes: a touch panel that senses a touch position of the touch surface; and a control module that controls the power module to output the drive according to the touch position The voltage is to the transparent electrodes corresponding to the touch position.
根據本發明的另一個實施例，上述的曲面觸感回饋觸控螢幕，更包括：一觸控面板，感測該觸控面的一觸控位置；以及一控制模組，根據該觸控位置以調控該電源模組輸出至該等透明電極的該驅動電壓。According to another embodiment of the present invention, the curved touch feedback touch screen further includes: a touch panel sensing a touch position of the touch surface; and a control module according to the touch position The driving voltage of the power module output to the transparent electrodes is regulated.
上述的曲面觸感回饋觸控螢幕中，該電源模組可包含一可變電壓源，該控制模組控制該可變電壓源，使該可變電壓源輸出較大的驅動電壓至位於該絕緣層厚度較厚的位置之該透明電極，且輸出較小的驅動電壓至位於該絕緣層厚度較薄的位置之該透明電極。In the above-mentioned curved touch feedback touch screen, the power module may include a variable voltage source, and the control module controls the variable voltage source to enable the variable voltage source to output a larger driving voltage to the insulation. The transparent electrode is disposed at a thicker layer and outputs a smaller driving voltage to the transparent electrode at a position where the thickness of the insulating layer is thin.
上述的曲面觸感回饋觸控螢幕中，該電源模組也可包含一可變電阻，該控制模組調整該可變電阻的電阻值，使得該電源模組輸出較大的驅動電壓至位於該絕緣層厚度較厚的位置之該透明電極，且輸出較小的驅動電壓至位於該絕緣層厚度較薄的位置之該透明電極。In the above-mentioned curved touch feedback touch screen, the power module may also include a variable resistor, and the control module adjusts the resistance value of the variable resistor, so that the power module outputs a larger driving voltage to the The transparent electrode has a thicker insulating layer and outputs a smaller driving voltage to the transparent electrode at a position where the thickness of the insulating layer is thin.
根據本發明的一個實施例，該驅動電壓為一高位準脈衝電壓。According to an embodiment of the invention, the driving voltage is a high level pulse voltage.
本發明也提供一種曲面觸感回饋觸控螢幕的觸感回饋驅動方法，該觸控螢幕包括具有曲面狀的一上表面及平面狀的一下表面的一絕緣層、位於該下表面且具有複數透明電極的一透明導電層以及輸出一驅動電壓至該透明導電層的一電源模組，其中該上表面用以當作一觸控面，該曲面觸控螢幕的觸感回饋驅動方法包括：感測該觸控面上的觸控；計算該觸控的位置；輸出該驅動電壓至對應該觸控位置的該透明電極。The present invention also provides a tactile feedback driving method for a curved touch feedback touch screen, the touch screen comprising an insulating layer having a curved upper surface and a planar lower surface, located on the lower surface and having a plurality of transparent a transparent conductive layer of the electrode and a power module for outputting a driving voltage to the transparent conductive layer, wherein the upper surface is used as a touch surface, and the touch sensing driving method of the curved touch screen comprises: sensing Touching on the touch surface; calculating the position of the touch; and outputting the driving voltage to the transparent electrode corresponding to the touch position.
上述的曲面觸感回饋觸控螢幕的觸感回饋驅動方法更包括：根據該觸控的位置所對應的絕緣層厚度以調控該驅動電壓。The haptic feedback driving method of the touch-sensitive feedback touch screen further includes: adjusting the driving voltage according to the thickness of the insulating layer corresponding to the position of the touch.
根據本發明的一個實施例，調控該驅動電壓係藉由調整該電源模組中一可變電源，使該可變電壓源輸出較大的驅動電壓至位於該絕緣層厚度較厚的位置之該透明電極，且輸出較小的驅動電壓至位於該絕緣層厚度較薄的位置之該透明電極。According to an embodiment of the invention, the driving voltage is adjusted by adjusting a variable power source in the power module, so that the variable voltage source outputs a larger driving voltage to a position where the insulating layer is thicker. The transparent electrode outputs a smaller driving voltage to the transparent electrode at a position where the thickness of the insulating layer is thin.
根據本發明的另一個實施例，調控該驅動電壓係藉由調整該電源模組中的一可變電阻的電阻值，使該電源模組輸出較大的驅動電壓至位於該絕緣層厚度較厚的位置之該透明電極，且輸出較小的驅動電壓至位於該絕緣層厚度較薄的位置之該透明電極。According to another embodiment of the present invention, the driving voltage is adjusted by adjusting a resistance value of a variable resistor in the power module, so that the power module outputs a larger driving voltage to a thicker layer of the insulating layer. The transparent electrode is positioned and outputs a smaller driving voltage to the transparent electrode at a position where the thickness of the insulating layer is thin.
根據本發明的曲面觸感回饋觸控螢幕及其驅動方法，無論在曲面狀的觸控面各位置進行觸控，觸感回饋的強度不會產生落差，而能獲得強度大致相同觸感回饋。According to the curved touch feedback touch screen of the present invention and the driving method thereof, no matter the touch at each position of the curved touch surface, the intensity of the tactile feedback does not fall, and the tactile feedback with substantially the same intensity can be obtained.
第1a圖係一曲面的觸感回饋觸控螢幕結構示意圖。第1b圖係第1a圖的觸感回饋觸控螢幕的等效電路圖。Figure 1a is a schematic diagram of a tactile feedback touch screen structure of a curved surface. Figure 1b is an equivalent circuit diagram of the tactile feedback touch screen of Figure 1a.
如第1a圖所示，一曲面的觸感回饋觸控螢幕10包括玻璃或塑膠等材質的絕緣層11，由複數透明電極組成的透明導電層12，以及提供驅動電壓的電源模組13。絕緣層11具有一上表面11a，以及一下表面11b。上表面11a為一中央區域突起的曲面，此曲面即為手指接觸觸感回饋觸控螢幕10的觸控面。下表面11b則為一平面，鋪滿複數的透明電極所構成的透明導電層12。As shown in FIG. 1a, a curved touch feedback touch screen 10 includes an insulating layer 11 made of glass or plastic, a transparent conductive layer 12 composed of a plurality of transparent electrodes, and a power module 13 for supplying a driving voltage. The insulating layer 11 has an upper surface 11a and a lower surface 11b. The upper surface 11a is a curved surface protruding from the central area, and the curved surface is the touch surface of the touch screen 10 for the touch of the finger. The lower surface 11b is a flat surface, and is covered with a transparent conductive layer 12 composed of a plurality of transparent electrodes.
當手指觸碰觸感回饋觸控螢幕10時，電源模組13會輸出一既定值的驅動電壓至透明導電層12中對應觸控位置正下方的透明電極，使得此透明電極與隔著絕緣體層11相對的手指之間產生一電場，此電場可控制手指絕緣體表面的摩擦力，使手指獲得特別的觸感。因此，如第1b圖所示，絕緣體層11等效於一電容，透明導電層12等效於一串聯於電容的電阻，而電源模組13則因提供一既定值的驅動電壓，故等效於一固定電壓源。When the finger touches the touch screen to feedback the touch screen 10, the power module 13 outputs a predetermined value of the driving voltage to the transparent electrode directly under the corresponding touch position in the transparent conductive layer 12, so that the transparent electrode and the insulator layer are separated. An electric field is generated between the 11 opposing fingers, and the electric field controls the friction of the surface of the finger insulator to give the finger a special touch. Therefore, as shown in FIG. 1b, the insulator layer 11 is equivalent to a capacitor, the transparent conductive layer 12 is equivalent to a resistor connected in series, and the power module 13 is equivalent to a driving voltage of a predetermined value. On a fixed voltage source.
在習知技術中，當手指觸碰觸感回饋觸控螢幕10的中央區域A(絕緣層11厚度厚)與週邊區域B(絕緣層11厚度薄)時，因絕緣層11的厚度不同，故位於中央區域A的電場EA 會比位於週邊區域B的電場EB 弱，使得中央區域A的觸感強度低於週邊區域B的觸感強度，造成中央區域A與週邊區域B兩者的觸感產生落差。In the prior art, when the touch of the finger touches the central area A of the touch screen 10 (the thickness of the insulating layer 11 is thick) and the peripheral area B (the thickness of the insulating layer 11 is thin), since the thickness of the insulating layer 11 is different, The electric field E A located in the central area A is weaker than the electric field E B located in the peripheral area B, so that the tactile sensation intensity of the central area A is lower than the tactile intensity of the peripheral area B, causing the touch of both the central area A and the peripheral area B Feelings have a drop.
第2a圖係根據本發明實施例1的曲面的觸感回饋觸控螢幕結構示意圖。2a is a schematic diagram of a tactile feedback touch screen structure of a curved surface according to Embodiment 1 of the present invention.
如第2a圖所示，本發明實施例1的觸感回饋觸控螢幕20同樣具有一中央突起的曲面絕緣層21、一透明導電層22、及電源模組23。但為了改善中央區域A與週邊區域B觸感強度不均的問題，本發明實施例1的電源模組23包括一可變電壓源231，而非固定電壓源，該可變電壓源231可因應手指觸控中央區域A(絕緣層11厚度厚)與週邊區域B(絕緣層11厚度薄)的不同，而施加不同的驅動電壓給這兩個區域的透明電極。第2b圖係第2a圖的觸感回饋觸控螢幕的等效電路圖。As shown in FIG. 2a, the tactile feedback touchscreen 20 of the first embodiment of the present invention also has a centrally curved curved insulating layer 21, a transparent conductive layer 22, and a power module 23. However, in order to improve the unevenness of the tactile intensity between the central area A and the peripheral area B, the power module 23 of the first embodiment of the present invention includes a variable voltage source 231 instead of a fixed voltage source, and the variable voltage source 231 can be adapted. The finger touches the central area A (the thickness of the insulating layer 11 is thick) and the peripheral area B (the thickness of the insulating layer 11 is thin), and different driving voltages are applied to the transparent electrodes of the two areas. Figure 2b is an equivalent circuit diagram of the tactile feedback touch screen of Figure 2a.
第3圖係觸控實施例1的曲面的觸感回饋觸控螢幕的中央區域及週邊區域時的等效電路圖。如第3圖所示，當手指觸控中央區域A時，可變電壓源231輸出一較大的驅動電壓，例如1000V，使得絕緣層21與透明導電層22分壓後絕緣層21獲得一較大的跨壓，例如500V；當手指觸控週邊區域B時，可變電壓源231輸出一較小的驅動電壓，例如500V，使得使得絕緣層21與透明導電層22分壓後絕緣層21獲得一較小的跨壓，例如250V。如此一來，絕緣層21厚度較厚的中央區域A有較大的跨壓，絕緣層21厚度較薄的週邊區域B有較小的跨壓，使得兩區域可獲得大致相同的電場，而手指觸控中央區域A與週邊區域B也能獲得大致相同的觸感強度。FIG. 3 is an equivalent circuit diagram when the tactile sensation of the curved surface of the touch control embodiment 1 is fed back to the central region and the peripheral region of the touch screen. As shown in FIG. 3, when the finger touches the central area A, the variable voltage source 231 outputs a larger driving voltage, for example, 1000 V, so that the insulating layer 21 and the transparent conductive layer 22 are separated, and the insulating layer 21 is obtained. A large voltage across, for example, 500V; when the finger touches the peripheral area B, the variable voltage source 231 outputs a smaller driving voltage, for example, 500V, so that the insulating layer 21 and the transparent conductive layer 22 are divided, and the insulating layer 21 is obtained. A smaller crossover pressure, such as 250V. As a result, the central region A having a thicker insulating layer 21 has a larger cross-pressure, and the peripheral region B having a thinner insulating layer 21 has a smaller cross-pressure, so that the two regions can obtain substantially the same electric field, and the fingers The touch center area A and the peripheral area B can also obtain substantially the same tactile intensity.
回到第2a圖，實施例1的曲面的觸感回饋觸控螢幕20更包括一觸控面板24、一控制模組25及一開關模組(未圖示)。當手指觸控絕緣體層21的上表面21a時，觸控面板24會感測出手指的觸控位置，並將觸控位置的資訊傳達給控制模組25。控制模組25則根據觸控位置的資訊來調整可變電壓源231要輸出的驅動電壓大小，例如當觸控位置在中央區域時控制模組25控制可變電壓源231輸出較大的驅動電壓，當觸控位置在週邊區域時控制模組25控制電源模組23輸出較小的驅動電壓。而開關模組則將電源模組23連接至觸控位置所對應的透明電極，使驅動電壓施加於該透明電極上產生電場E。Returning to FIG. 2a, the touch-sensitive feedback touch screen 20 of the curved surface of the first embodiment further includes a touch panel 24, a control module 25 and a switch module (not shown). When the finger touches the upper surface 21a of the insulator layer 21, the touch panel 24 senses the touch position of the finger and transmits the information of the touch position to the control module 25. The control module 25 adjusts the magnitude of the driving voltage to be output by the variable voltage source 231 according to the information of the touch position. For example, when the touch position is in the central area, the control module 25 controls the variable voltage source 231 to output a larger driving voltage. When the touch position is in the peripheral area, the control module 25 controls the power module 23 to output a smaller driving voltage. The switch module connects the power module 23 to the transparent electrode corresponding to the touch position, and applies a driving voltage to the transparent electrode to generate an electric field E.
第4a圖係根據本發明實施例2的曲面的觸感回饋觸控螢幕結構示意圖。4A is a schematic diagram of a tactile feedback touch screen structure of a curved surface according to Embodiment 2 of the present invention.
如第4a圖所示，本發明實施例2的觸感回饋觸控螢幕30具有與實施例1的絕緣層21及透明導電層22相同的絕緣層31及透明導電層32。實施例2與實施例1的差異在於，本發明實施例2的電源模組33包括一固定電壓源331與一可變電阻332，該可變電阻332可因應手指觸控中央區域A(絕緣層11厚度厚)與週邊區域B(絕緣層11厚度薄)的不同，而調整不同的阻值。第4b圖係第4a圖的觸感回饋觸控螢幕的等效電路圖。As shown in FIG. 4a, the tactile feedback touch screen 30 of the second embodiment of the present invention has the same insulating layer 31 and transparent conductive layer 32 as the insulating layer 21 and the transparent conductive layer 22 of the first embodiment. The difference between the second embodiment and the first embodiment is that the power module 33 of the second embodiment of the present invention includes a fixed voltage source 331 and a variable resistor 332. The variable resistor 332 can touch the central area A of the finger (insulation layer). 11 thickness is thicker than the peripheral area B (thin thickness of the insulating layer 11), and different resistance values are adjusted. Figure 4b is an equivalent circuit diagram of the tactile feedback touch screen of Figure 4a.
第5圖係觸控實施例2的曲面的觸感回饋觸控螢幕的中央區域及週邊區域時的等效電路圖。如第5圖所示，當手指觸控中央區域A時，固定電壓源331輸出例如1000V的驅動電壓，而可變電阻332的阻值降低，例如0Ω，使得絕緣層31與透明導電層32分壓後絕緣層31獲得一較大的跨壓，例如500V；當手指觸控週邊區域B時，固定電壓源331同樣輸出例如1000V的驅動電壓，但可變電阻332的阻值上升，例如5kΩ，使得絕緣層31與透明導電層32分壓後絕緣層31獲得一較小的跨壓，例如250V。如此一來，絕緣層31厚度較厚的中央區域A有較大的跨壓，絕緣層31厚度較薄的週邊區域B有較小的跨壓，使得兩區域可獲得大致相同的電場，而手指觸控中央區域A與週邊區域B也能獲得大致相同的觸感強度。Fig. 5 is an equivalent circuit diagram when the tactile sensation of the curved surface of the touch control embodiment 2 is fed back to the central region and the peripheral region of the touch screen. As shown in FIG. 5, when the finger touches the central area A, the fixed voltage source 331 outputs a driving voltage of, for example, 1000 V, and the resistance of the variable resistor 332 is lowered, for example, 0 Ω, so that the insulating layer 31 and the transparent conductive layer 32 are separated. After pressing, the insulating layer 31 obtains a large voltage across the surface, for example, 500V. When the finger touches the peripheral region B, the fixed voltage source 331 also outputs a driving voltage of, for example, 1000V, but the resistance of the variable resistor 332 rises, for example, 5kΩ. After the insulating layer 31 and the transparent conductive layer 32 are divided, the insulating layer 31 obtains a small cross-voltage, for example, 250V. As a result, the central region A having a thicker thickness of the insulating layer 31 has a larger cross-pressure, and the peripheral region B having a thinner thickness of the insulating layer 31 has a smaller cross-pressure, so that the two regions can obtain substantially the same electric field, and the fingers The touch center area A and the peripheral area B can also obtain substantially the same tactile intensity.
回到第4a圖，同樣地，實施例2的曲面的觸感回饋觸控螢幕30也包括一觸控面板34、一控制模組35及一開關模組(未圖示)。當手指觸控絕緣體層31的上表面31a時，觸控面板34會感測出手指的觸控位置，並將觸控位置的資訊傳達給控制模組35。控制模組35則根據觸控位置的資訊來調整可變電阻332的阻值大小，例如當觸控位置在中央區域時控制模組25降低可變電阻332的阻值，當觸控位置在週邊區域時控制模組25則提高可變電阻332的阻值。而開關模組則將電源35連接至觸控位置所對應的透明電極，使驅動電壓施加於該透明電極上產生電場E。Returning to FIG. 4a, the touch-sensitive feedback touch screen 30 of the curved surface of the second embodiment also includes a touch panel 34, a control module 35 and a switch module (not shown). When the finger touches the upper surface 31a of the insulator layer 31, the touch panel 34 senses the touch position of the finger and transmits the information of the touch position to the control module 35. The control module 35 adjusts the resistance of the variable resistor 332 according to the information of the touch position. For example, when the touch position is in the central area, the control module 25 reduces the resistance of the variable resistor 332. When the touch position is around The area time control module 25 increases the resistance of the variable resistor 332. The switch module connects the power source 35 to the transparent electrode corresponding to the touch position, and applies a driving voltage to the transparent electrode to generate an electric field E.
除了實施例1及2以調變驅動電壓的方式來控制絕緣層電場外，也可以改變透明導電層的構造來控制絕緣層電場。第6a圖係根據本發明實施例3的曲面的觸感回饋觸控螢幕結構示意圖。In addition to Embodiments 1 and 2, in order to control the electric field of the insulating layer in a manner of modulating the driving voltage, the configuration of the transparent conductive layer may be changed to control the electric field of the insulating layer. Figure 6a is a schematic view showing the structure of a tactile feedback touch screen of a curved surface according to Embodiment 3 of the present invention.
如第6a圖所示，本發明實施例3的觸感回饋觸控螢幕40的具有與習知技術的絕緣層11及電源模組13相同的絕緣層41及電源模組43，也就是說電源模組43為一固定電壓源431。但實施例3的透明導電層42並非固定厚度的構造。實施例3的絕緣層42在中央區域A(絕緣層11厚度厚)具有厚度較厚的透明電極42a，在週邊區域B(絕緣層11厚度薄)具有厚度較薄的透明電極42b。第6b圖係第6a圖的觸感回饋觸控螢幕的等效電路圖。As shown in FIG. 6a, the touch-sensing touch screen 40 of the third embodiment of the present invention has the same insulating layer 41 and power module 43 as the conventional insulating layer 11 and the power module 13, that is, the power source. Module 43 is a fixed voltage source 431. However, the transparent conductive layer 42 of Embodiment 3 is not of a fixed thickness configuration. The insulating layer 42 of the third embodiment has a thick transparent electrode 42a in the central region A (the thickness of the insulating layer 11 is thick), and a transparent electrode 42b having a small thickness in the peripheral region B (the insulating layer 11 is thin). Figure 6b is an equivalent circuit diagram of the tactile feedback touch screen of Figure 6a.
第7圖係觸控實施例3的曲面的觸感回饋觸控螢幕的中央區域及週邊區域時的等效電路圖。如第7圖所示，當手指觸控中央區域A時，固定電壓源431輸出例如1000V的驅動電壓，而因為中央區域A的透明電極42a厚度較厚故具有較小的電阻值，例如10Ω，使得絕緣層41與透明電極42a分壓後絕緣層41獲得一較大的跨壓，例如500V；當手指觸控週邊區域B時，固定電壓源431同樣輸出例如1000V的驅動電壓，但因為週邊區域B的透明電極42b厚度較薄故具有較大的電阻值，例如15kΩ，使得絕緣層41與透明導電層42分壓後絕緣層41獲得一較小的跨壓，例如250V。如此一來，絕緣層41厚度較厚的中央區域A有較大的跨壓，絕緣層41厚度較薄的週邊區域B有較小的跨壓，使得兩區域可獲得大致相同的電場，而手指觸控中央區域A與週邊區域B也能獲得大致相同的觸感強度。Fig. 7 is an equivalent circuit diagram when the tactile sensation of the curved surface of the touch control embodiment 3 is fed back to the central area and the peripheral area of the touch screen. As shown in FIG. 7, when the finger touches the central area A, the fixed voltage source 431 outputs a driving voltage of, for example, 1000 V, and since the transparent electrode 42a of the central area A is thick, it has a small resistance value, for example, 10 Ω, After the insulating layer 41 and the transparent electrode 42a are divided, the insulating layer 41 obtains a large voltage across the insulating layer 41, for example, 500V. When the finger touches the peripheral region B, the fixed voltage source 431 also outputs a driving voltage of, for example, 1000V, but because of the surrounding area. The transparent electrode 42b of B has a relatively small thickness and thus has a large resistance value, for example, 15 kΩ, so that the insulating layer 41 and the transparent conductive layer 42 are divided to obtain a small voltage across the insulating layer 41, for example, 250V. In this way, the central region A having a thicker thickness of the insulating layer 41 has a larger cross-pressure, and the peripheral region B having a thinner thickness of the insulating layer 41 has a smaller cross-pressure, so that the two regions can obtain substantially the same electric field, and the fingers The touch center area A and the peripheral area B can also obtain substantially the same tactile intensity.
同樣地，實施例3的曲面的觸感回饋觸控螢幕30也包括觸控面板及開關模組(皆未圖示)。當手指觸控絕緣體層41的上表面41a時，觸控面板會感測出手指的觸控位置，而開關模組則將電源模組43連接至觸控位置所對應的透明電極，使驅動電壓施加於該透明電極上產生電場E。因透明導電層42的厚度相對於絕緣體41而變，故不需要根據觸控的位置去控制驅動電壓大小。Similarly, the tactile feedback touch screen 30 of the curved surface of the third embodiment also includes a touch panel and a switch module (all not shown). When the finger touches the upper surface 41a of the insulator layer 41, the touch panel senses the touch position of the finger, and the switch module connects the power module 43 to the transparent electrode corresponding to the touch position to make the driving voltage. An electric field E is generated by application to the transparent electrode. Since the thickness of the transparent conductive layer 42 is changed with respect to the insulator 41, it is not necessary to control the magnitude of the driving voltage according to the position of the touch.
另外，在上述實施例1～3中，電源的輸出配合開關模組的開閉，使得透明導電層接受到的驅動電壓為一具有高位準的脈衝信號，而非既定位準的直流電壓信號。但本發明的驅動電壓也可以是其他頻率調變後的交流電壓信號，端看該觸感回饋觸控螢幕所要產生的觸感而定。In addition, in the above embodiments 1 to 3, the output of the power supply cooperates with the opening and closing of the switch module, so that the driving voltage received by the transparent conductive layer is a pulse signal having a high level, instead of the aligned DC voltage signal. However, the driving voltage of the present invention may also be an AC voltage signal modulated by other frequencies, depending on the tactile sensation generated by the tactile feedback to the touch screen.
第8圖係根據本發明實施例4的曲面的觸感回饋觸控螢幕的觸感回饋驅動方法。Fig. 8 is a tactile feedback driving method of a tactile feedback touch screen of a curved surface according to Embodiment 4 of the present invention.
在步驟801，觸控面板感測手指的觸控。接著，在步驟802，控制模組計算出觸控的位置。在步驟803，控制模組設定電源要輸出至透明導電層的驅動電壓，而設定驅動電壓的方式可根據觸控的位置的絕緣層厚度，而以如前述實施例1調整可變電壓源的輸出電壓或前述實施例2調整串聯於電源的可變電阻的電阻值的方式來實行，使得厚度較厚的絕緣層能獲得較大的跨壓。在步驟804，電源輸出設定的驅動電壓至觸控的位置所對應的透明電極。最後，在步驟805，跨過絕緣層的電場使手指感覺到觸感回饋。In step 801, the touch panel senses the touch of the finger. Next, in step 802, the control module calculates the location of the touch. In step 803, the control module sets the driving voltage to be output to the transparent conductive layer, and the driving voltage is set according to the thickness of the insulating layer at the touch position, and the output of the variable voltage source is adjusted as in the foregoing Embodiment 1. The voltage or the foregoing embodiment 2 is carried out in such a manner as to adjust the resistance value of the variable resistor connected in series to the power source, so that a thicker insulating layer can obtain a large cross-over voltage. In step 804, the power supply outputs the set driving voltage to the transparent electrode corresponding to the touch position. Finally, at step 805, the electric field across the insulating layer causes the finger to feel tactile feedback.
按照上述的步驟，每次手指觸控時，觸感回饋觸控螢幕即重複一次上述801～805的步驟。而因為步驟803具備驅動電壓調變的功能，故能根據觸控面各位置而輸出對應的驅動電壓。因此根據本發明實施例4的曲面的觸感回饋觸控螢幕的觸感回饋驅動方法，能夠使曲面的觸感回饋觸控螢幕的不同觸控位置獲得強度相同的觸感回饋。According to the above steps, each time the finger touches, the touch sense feedback step is repeated once the steps of 801 to 805 are repeated. Since the step 803 has the function of driving voltage modulation, the corresponding driving voltage can be output according to each position of the touch surface. Therefore, according to the tactile feedback feedback driving method of the touch-sensitive feedback touch screen of the curved surface of the fourth embodiment of the present invention, the tactile feedback of the curved surface can be obtained by returning the tactile feedback of the curved touch screen to the different touch positions of the touch screen.
以上雖說明了實施本發明的實施例，但本發明並不限於上述的實施例。在不偏離本發明主旨的範圍內可做適當的變更。例如，利用本發明的曲面的觸感回饋觸控螢幕並不限定於觸控面中央突起的構造，觸控面可以是任意的曲面。另外，透明電極分佈的方式及數量也沒有特別的限制，在可讓觸控面各位置都能獲得觸感回饋的前提下，透明電極可做各種分佈或數量的設計。Although the embodiments of the present invention have been described above, the present invention is not limited to the above embodiments. Appropriate changes can be made without departing from the spirit of the invention. For example, the tactile feedback touch screen using the curved surface of the present invention is not limited to the structure of the central protrusion of the touch surface, and the touch surface may be any curved surface. In addition, the manner and quantity of the transparent electrode distribution are not particularly limited, and the transparent electrodes can be designed in various distributions or quantities under the premise that the touch surface can be obtained at various positions on the touch surface.
10、20、30、40．．．曲面的觸感回饋觸控螢幕10, 20, 30, 40. . . Surface touch feedback touch screen
11、21、31、41．．．絕緣層11, 21, 31, 41. . . Insulation
11a、21a、31a、41a‧‧‧上表面(觸控面)11a, 21a, 31a, 41a‧‧‧ upper surface (touch surface)
11b、21b、31b、41b‧‧‧下表面11b, 21b, 31b, 41b‧‧‧ lower surface
12、22、32、42‧‧‧透明導電層12, 22, 32, 42‧‧‧ transparent conductive layer
13、23、33、43‧‧‧電源模組13, 23, 33, 43‧‧‧ power modules
231‧‧‧可變電壓源231‧‧‧Variable voltage source
24、34‧‧‧觸控面板24, 34‧‧‧ touch panel
25、35‧‧‧控制模組25, 35‧‧‧ control module
331、431‧‧‧固定電壓源331, 431‧‧‧ fixed voltage source
332‧‧‧可變電阻332‧‧‧Variable resistor
42a‧‧‧透明電極(位於中央區域)42a‧‧‧Transparent electrode (located in the central area)
42b‧‧‧透明電極(位於週邊區域)42b‧‧‧Transparent electrode (located in the surrounding area)
A‧‧‧中央區域A‧‧‧Central area
B‧‧‧週邊區域B‧‧‧ surrounding area
E、EA 、EB ‧‧‧電場E, E A , E B ‧ ‧ electric field
第1a圖係一曲面的觸感回饋觸控螢幕結構示意圖。Figure 1a is a schematic diagram of a tactile feedback touch screen structure of a curved surface.
第1b圖係第1a圖的觸感回饋觸控螢幕的等效電路圖。Figure 1b is an equivalent circuit diagram of the tactile feedback touch screen of Figure 1a.
第2a圖係根據本發明實施例1的曲面的觸感回饋觸控螢幕結構示意圖。2a is a schematic diagram of a tactile feedback touch screen structure of a curved surface according to Embodiment 1 of the present invention.
第2b圖係第2a圖的觸感回饋觸控螢幕的等效電路圖。Figure 2b is an equivalent circuit diagram of the tactile feedback touch screen of Figure 2a.
第3圖係觸控實施例1的曲面的觸感回饋觸控螢幕的中央區域及週邊區域時的等效電路圖。FIG. 3 is an equivalent circuit diagram when the tactile sensation of the curved surface of the touch control embodiment 1 is fed back to the central region and the peripheral region of the touch screen.
第4a圖係根據本發明實施例2的曲面的觸感回饋觸控螢幕結構示意圖。4A is a schematic diagram of a tactile feedback touch screen structure of a curved surface according to Embodiment 2 of the present invention.
第4b圖係第4a圖的觸感回饋觸控螢幕的等效電路圖。Figure 4b is an equivalent circuit diagram of the tactile feedback touch screen of Figure 4a.
第5圖係觸控實施例2的曲面的觸感回饋觸控螢幕的中央區域及週邊區域時的等效電路圖。Fig. 5 is an equivalent circuit diagram when the tactile sensation of the curved surface of the touch control embodiment 2 is fed back to the central region and the peripheral region of the touch screen.
第6a圖係根據本發明實施例3的曲面的觸感回饋觸控螢幕結構示意圖。Figure 6a is a schematic view showing the structure of a tactile feedback touch screen of a curved surface according to Embodiment 3 of the present invention.
第6b圖係第6a圖的觸感回饋觸控螢幕的等效電路圖。Figure 6b is an equivalent circuit diagram of the tactile feedback touch screen of Figure 6a.
第7圖係觸控實施例3的曲面的觸感回饋觸控螢幕的中央區域及週邊區域時的等效電路圖。Fig. 7 is an equivalent circuit diagram when the tactile sensation of the curved surface of the touch control embodiment 3 is fed back to the central area and the peripheral area of the touch screen.
第8圖係根據本發明實施例4的曲面的觸感回饋觸控螢幕的觸感回饋驅動方法。Fig. 8 is a tactile feedback driving method of a tactile feedback touch screen of a curved surface according to Embodiment 4 of the present invention.
20．．．曲面的觸感回饋觸控螢幕20. . . Surface touch feedback touch screen
21．．．絕緣層twenty one. . . Insulation
21a．．．上表面(觸控面)21a. . . Upper surface (touch surface)
21b．．．下表面21b. . . lower surface
22．．．透明導電層twenty two. . . Transparent conductive layer
23．．．電源模組twenty three. . . Power module
231．．．可變電壓源231. . . Variable voltage source
24．．．觸控面板twenty four. . . Touch panel
25．．．控制模組25. . . Control module
A．．．中央區域A. . . Central area
B．．．週邊區域B. . . Surrounding area
E．．．電場E. . . electric field
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| US20040032369A1 (en) * | 2002-08-16 | 2004-02-19 | Leapfrog Enterprises, Inc. | Electrographic position location apparatus |
| US20050030048A1 (en) * | 2003-08-05 | 2005-02-10 | Bolender Robert J. | Capacitive sensing device for use in a keypad assembly |
| TW201025104A (en) * | 2008-12-30 | 2010-07-01 | Univ Nat Chiao Tung | Capacitive touch panel |
| TW201040622A (en) * | 2009-05-15 | 2010-11-16 | Chimei Innolux Corp | Liquid crystal display device and electronic device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040032369A1 (en) * | 2002-08-16 | 2004-02-19 | Leapfrog Enterprises, Inc. | Electrographic position location apparatus |
| US20050030048A1 (en) * | 2003-08-05 | 2005-02-10 | Bolender Robert J. | Capacitive sensing device for use in a keypad assembly |
| TW201025104A (en) * | 2008-12-30 | 2010-07-01 | Univ Nat Chiao Tung | Capacitive touch panel |
| TW201040622A (en) * | 2009-05-15 | 2010-11-16 | Chimei Innolux Corp | Liquid crystal display device and electronic device |
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