CN101996014B - Pressure detection method of touch sensing element and electronic device using same - Google Patents

Pressure detection method of touch sensing element and electronic device using same Download PDF

Info

Publication number
CN101996014B
CN101996014B CN 200910167219 CN200910167219A CN101996014B CN 101996014 B CN101996014 B CN 101996014B CN 200910167219 CN200910167219 CN 200910167219 CN 200910167219 A CN200910167219 A CN 200910167219A CN 101996014 B CN101996014 B CN 101996014B
Authority
CN
China
Prior art keywords
voltage
value
film
plurality
electrodes
Prior art date
Application number
CN 200910167219
Other languages
Chinese (zh)
Other versions
CN101996014A (en
Inventor
房国斌
曾恕宏
Original Assignee
宏达国际电子股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 宏达国际电子股份有限公司 filed Critical 宏达国际电子股份有限公司
Priority to CN 200910167219 priority Critical patent/CN101996014B/en
Publication of CN101996014A publication Critical patent/CN101996014A/en
Application granted granted Critical
Publication of CN101996014B publication Critical patent/CN101996014B/en

Links

Abstract

一种触控感测元件的压力侦测方法,该方法包括下列步骤:提供第一电位差至第一薄膜的两电极;利用所述第一电位差的分压对电容充电;取样所述电容的充电电压,以取得多个第一电压值,并根据该多个第一电压值求得第一电压值的变化;将所述第一电压值的变化与门槛值相比较;以及当所述第一电压值的变化小于所述门槛值时,对所述多个第一电压值中的至少一者进行后处理。 Pressure detection method of a touch sensing element, the method comprising the steps of: providing a first potential difference between the two electrodes to a first film; using the first potential difference obtained by dividing the capacitor charge; the sampling capacitor charging voltage to obtain a first plurality of voltage values, and the variation of the first voltage value is obtained based on the plurality of first voltage value; the first change in the voltage value is compared with a threshold value; and when the when the variation of the first voltage is less than the threshold value, after the plurality of first voltage values ​​for at least one process. 本发明另提供一种使用上述压力侦测方法的电子装置。 The present invention further provides an electronic apparatus using the pressure detection method. 本发明提供的压力侦测方法和电子装置通过侦测电容的充电电压变化以判定触压动作是否为有效触压,且由于不须直接计算电阻值,具有较高的位置精确度。 And pressure detection method of the present invention provides an electronic device by detecting changes in capacitance charging voltage to determine whether the action is a valid touch pressure touch pressure is not required and since the resistance is calculated directly, with a high position accuracy.

Description

触控感测元件的压力侦测方法以及使用该方法的电子装置 Pressure detection method of a touch sensing element and an electronic device using the method

技术领域 FIELD

[0001] 本发明涉及一种定位装置,并且尤其涉及一种电阻式触控感测元件的压力侦测方法以及使用该方法的电子装置。 [0001] The present invention relates to a positioning device, and more particularly relates to a method for detecting a pressure resistive touch sensing device and an electronic apparatus using the method.

背景技术 Background technique

[0002] 图1显示了一种现有的四线式触控屏幕(4-wire touch screen)9,其由两个相间隔一定间隙(gap)的弹性透明X电阻板91和Y电阻板92所构成,其中X电阻板91和Y电阻板92为平面电阻,且在自然状态下互不接触。 [0002] FIG. 1 shows a conventional four-wire touch screen (4-wire touch screen) 9, consisting of two spaced apart by a gap (GAP) of the elastic plate 91 and the transparent resistive X Y resistor plate 92 the configuration, wherein X and Y are the resistance of the resistor plate 91 is flat resistance plate 92, and not in contact in the natural state. X电阻板91上,电阻值只随X方向的位置而变化;X电阻板91包括沿着X电阻板91的左右两侧而设置的两电极X+、X_以及形成于X电阻板91的上表面的透明电阻层。 91, only the resistance value varies with the position of the X-direction resistor plate X; X comprises a resistor plate 91, and the X_ resistor plate 91 is formed on the X electrode X of the two left and right sides along the X and resistor plate 91 provided + surface of the transparent resistive layer. Y电阻板92上,电阻值只随Y方向的位置而变化'Y电阻板92包括沿着Y电阻板92的前后两侧而设置的两电极Y+、Y_以及形成于Y电阻板92的下表面的透明电阻层,其中所述X方向和Y方向为互相垂直的两方向。 92, the resistance value is only a function of position in the Y direction varies resistor plate Y 'Y resistor plate 92 includes two front and rear sides along the Y electrodes Y and the resistance plate 92 provided +, Y_ and resistor plate 92 is formed in the lower Y surface of the transparent resistive layer, wherein the X and Y directions in two directions perpendicular to each other.

[0003] 图2为所述触控屏幕9受触压时的剖视图。 [0003] FIG. 2 is a cross-sectional view of the touch screen 9 when the contact pressure by. 当X电阻板91上的触压点P受到外力F触压时,在该触压点P处,X电阻板91与Y电阻板92之间的间距缩小而使得接触电阻Rtouch自近似无穷大而成为有限值;外力F愈大,接触电阻Rt_h的电阻值愈小。 When the contact pressure points on the X resistor plate 91 P receives the external force F contact pressure, the contact pressure at the point P, X resistor plate 91 and the Y resistor plate spacing between 92 reduced such that the contact resistance Rtouch from approximately infinite become a finite value; external force F is larger, the resistance value of the contact resistance is smaller Rt_h. 所述触控屏幕9中,通过计算接触电阻Rt_h的电阻值,可判定外力F的触压压力。 9 in the touch screen, by calculating the contact resistance of the resistor Rt_h can be determined contact pressure of the pressure force F.

[0004] 请参照图3a至图3c所示,其显示一种现有的计算接触电阻Rtoueh的电阻值的方法。 [0004] Referring to Figure 3a to Figure 3c, which shows the contact resistance value of the resistor Rtoueh method of a prior calculation. 接触电阻Rt_h可根据式(I)而求出: Rt_h contact resistance according to the formula (I) and obtained:

[0005] Rtouch = (Rx plate) X [ (X/2n) X (Z2ZZ1)-1] (I) [0005] Rtouch = (Rx plate) X [(X / 2n) X (Z2ZZ1) -1] (I)

[0006] 式(I)中,Rx plate为X电阻板91的面电阻;n为连接至电压侦测点的模拟数字转换单元(ADC)的解析度;X表示触压点P的X方向位置,其可根据图3a中ADC输出的数字电压求得! In [0006] formula (I), Rx plate X is a surface resistance of the resistor plate 91; n is connected to the voltage detecting terminal of the analog-digital conversion unit (ADC) resolution; X represents the X-direction position of contact pressure point P which can be obtained based on the digital voltage output from the ADC in FIG. 3A! Z1表不Y_电极的输入,其可根据图3b中ADC输出的数字电压求得;Z2表不X+电极的输入,其可根据图3c中ADC输出的数字电压求得。 Z1 table does Y_ input electrode, which can be obtained based on the digital voltage output from the ADC in Figure 3b; X + Z2 of the table is not input electrode, which can be obtained according to the digital ADC output voltage in FIG 3c.

[0007] 然而此种通过计算接触电阻Rt_h的电阻值的压力侦测方法至少具有下列问题: [0007] However, this problem has at least the following pressure detection method of calculating the resistance value of the contact resistance Rt_h:

[0008] 接触电阻Rt_h的电阻值经计算所求得,而式⑴中的X值本身即为一不确定因素。 [0008] The resistance value of the contact resistance was calculated Rt_h being determined, and the value of the formula X are themselves in a ⑴ uncertainties.

[0009] 接触电阻Rtoudl的电阻值并不等于压力值,只能作为参考值而无法作为有效判定的依据。 [0009] The contact resistance value is not equal to the pressure Rtoudl resistance value, the reference value not only as effective as the basis for determination.

[0010] 接触电阻Rtoueh的电阻值范围很大,不易根据所计算出的电阻值定义临界点,因而会限制判断精确度。 [0010] a large contact resistance Rtoueh range of resistance values, based on the calculated easily define the critical point of the resistance value, and limit determination accuracy.

[0011] 有鉴于此,有必要提出一种高精确度的触控感测元件的压力侦测方法,以降低触压点的误判机率。 [0011] In view of this, it is necessary to provide a touch sensing element for a high accuracy of pressure detection method, in order to reduce the probability of misjudgment of contact pads.

发明内容 SUMMARY

[0012] 本发明提供一种触控感测元件的压力侦测方法以及使用该方法的电子装置,其中所述侦测方法通过取样电容的多个电压值,并判断该电压值是否达到稳态,藉以判断触压是否为有效触压。 [0012] The present invention provides a touch sensing element and the pressure detection method of an electronic device using the method, wherein the plurality of voltage values ​​detected by the method of sampling capacitors, and determines whether the voltage reaches a steady state value , thereby determining whether the effective contact pressure contact pressure. [0013] 本发明提供一种触控感测元件的压力侦测方法以及使用该方法的电子装置,其中所述侦测方法通过将所取样的电容的电压值的变化(variation)与门槛值相比较,藉以判断所述电压值是否已达到稳态。 [0013] The present invention provides a touch sensing element and wherein the pressure detection method of detecting the change in capacitance by the method of the sampled voltage value (Variation) with the threshold of the electronic device using the method, comparison, thereby determining whether the voltage value has reached a steady state.

[0014] 本发明提供一种触控感测元件的压力侦测方法,所述触控感测元件包括第一薄膜和第二薄膜,且每个薄膜包括两电极。 [0014] The present invention provides a touch sensing element of the pressure detection method, the touch-sensing element comprises a first film and second film, and each film includes two electrodes. 所述侦测方法包括下列步骤:提供第一电位差至所述第一薄膜的两电极;利用所述第一电位差的分压对电容充电;取样所述电容的充电电压,以取得多个第一电压值,并根据该多个第一电压值求得第一电压值的变化;将所述第一电压值的变化与门槛值相比较;以及当所述第一电压值的变化小于所述门槛值时,对所述多个第一电压值中的至少一者进行后处理。 The detection method comprises the steps of: providing a first potential difference to the two electrodes of the first film; using the first potential difference obtained by dividing the capacitor charge; sampling of the capacitor charging voltage to obtain a plurality of a first voltage value, and the variation of the first voltage value is obtained based on the plurality of first voltage value; the first change in the voltage value is compared with a threshold value; and when the first change in the voltage value is smaller than the when the above threshold, after said first plurality of voltage values ​​for at least one process.

[0015] 根据上述本发明的压力侦测方法,还包括下列步骤:提供第二电位差至所述第二薄膜的两电极;利用所述第二电位差的分压,对所述电容充电;取样所述电容的充电电压,以取得多个第二电压值,并根据该多个第二电压值求得第二电压值的变化;将所述第二电压值的变化与所述门槛值相比较;当所述第一电压值的变化和第二电压值的变化中的一者大于所述门槛值时,忽略所述多个第一电压值和第二电压值;以及当所述第一电压值的变化和第二电压值的变化均小于所述门槛值时,对所述多个第一电压值中的至少一者和所述多个第二电压值中的至少一者进行后处理。 [0015] The pressure detection method of the present invention, further comprising the steps of: providing a second potential difference to the two electrodes of the second thin film; second potential difference with the partial pressure of said charging capacitor; the sampling capacitor charge voltage to obtain a second plurality of voltage values, and the variation of the second voltage value is obtained based on the plurality of second voltage value; the second change in the voltage value of the threshold values comparison; when the variation change of the first voltage value and the second voltage value is larger than the threshold one, ignoring the plurality of first voltage value and the second voltage value; and when the first when the change in the voltage value and the change of the second voltage value less than the threshold value, after the plurality of first voltage values ​​and at least one of the plurality of second voltage values ​​are processed at least one .

[0016] 本发明还提供一种电子装置,该装置包括第一薄膜、第二薄膜、电源、电容以及处理单元。 [0016] The present invention also provides an electronic device, the apparatus comprising a first film, a second film, a power supply, a capacitor and a processing unit. 所述第一薄膜和第二薄膜分别具有两电极。 The first and second film each have two electrodes. 所述电源用于提供电位差至所述第一薄膜的两电极或所述第二薄膜的两电极。 The power supply for providing a potential difference to the two electrodes of the first film or the second film electrodes. 所述电容用于选择性耦接于所述第一薄膜的两电极中的一者或所述第二薄膜的两电极中的一者,并通过该被耦接的电极接收所述电位差的分压进行充电。 The capacitor is selectively coupled to one or two electrodes of the first thin film electrodes of the second thin film of one, and by the receiving electrode coupled to the potential difference dividing charge. 所述处理单元用于取样所述电容的充电电压,以取得多个电压值,并根据该多个电压值求得电压值的变化,并用于将该电压值的变化与门槛值相比较;其中当所述电压值的变化小于所述门槛值时,所述处理单元对所述多个电压值中的至少一者进行后处理。 Processing means for sampling the charge voltage of the capacitor, to obtain a plurality of voltage values, and the change of the voltage value determined based on the plurality of voltage values, and is used to change the threshold voltage value is compared; wherein when the change of the voltage is less than the threshold value, the processing unit of the plurality of voltage values ​​to at least one post-treatment.

[0017] 本发明还提供一种触控感测元件的压力侦测方法,所述触控感测元件包括第一薄膜和第二薄膜,且每个薄膜包括两电极。 [0017] The present invention further provides a touch sensing element of the pressure detection method, the touch-sensing element comprises a first film and second film, and each film includes two electrodes. 所述侦测方法包括下列步骤:提供第一电位差至所述第一薄膜的两电极;利用所述第一电位差的分压,对电容充电;取样所述电容的充电电压,以取得多个第一电压值;判断所述多个第一电压值中的至少一者是否达到稳态;当所述多个第一电压值均未达到稳态时,结束压力侦测程序;当所述第一电压值的至少一者已达到稳态时,所述方法还包括下列步骤:提供第二电位差至所述第二薄膜的两电极;利用所述第二电位差的分压,对所述电容充电;取样所述电容的充电电压,以取得多个第二电压值;判断所述多个第二电压值中的至少一者是否达到稳态;当所述多个第二电压值均未达到稳态时,结束压力侦测程序;以及当所述第二电压值的至少一者已达到稳态时,则对所述至少一个第一电压值和至少一个第二电压值进行后处理。 The detection method comprises the steps of: providing a first potential difference to the two electrodes of the first film; a first potential difference with the partial pressure of charging the capacitor; sampling of the capacitor charging voltage, in order to obtain a multi- a first voltage value; determining at least one of said plurality of first voltage value has reached a steady state; when the plurality of first voltage values ​​did not reach a steady state, the end of the pressure detection procedure; and when the at least one of the first voltage value has reached a steady state, said method further comprising the steps of: providing a second potential difference to the two electrodes of the second thin film; second potential difference with the partial pressure of the charging said capacitor; sampling of the capacitor charging voltage to obtain a second plurality of voltage values; determining at least one of said plurality of second voltage value has reached a steady state; when the plurality of second voltage values ​​are does not reach the steady state, the end of the pressure detection procedure; and when at least one of the second voltage value has reached a steady state, the voltage of the at least one first value and at least a second voltage value after treatment .

[0018] 本发明中,当触控感测元件受到外力触压时,在第一时间区间施加电位差至X薄膜(Y薄膜)的两个电极,以使Y薄膜(或X薄膜)的一个电极对电容充电,并在第二时间区间对该电容的充电电压值进行取样。 A [0018] In the present invention, when the touch sensing contact pressure element external force, a potential difference is applied to two electrodes X film (Y film) in a first time interval, so that a thin film Y (X or film) electrode charging the capacitor, and the sampling capacitor charge voltage value in a second time interval. 当其中一个薄膜对所述电容的充电电压值未达稳态时,则判断此次触压为无效触压。 When a film of which the charging voltage is less than the steady-state value of the capacitor, the contact pressure is determined to be invalid contact pressure. 此外,所述第二时间区间的长短以及所取样的充电电压值的数目可根据触控感测元件所需的侦测精确度而设定。 Further, the length of the charging voltage and the number of the sampled values ​​of the second time interval may be set to the desired detection accuracy of the touch sensing device according to. [0019] 本发明中,对所述第一和第二电压值进行后处理的步骤包括根据所述至少一个第一电压值和至少一个第二电压值计算位置坐标,并执行对应于该位置坐标的功能。 [0019] In the present invention, after the step of the first and second voltage values ​​are processed according to the position coordinates includes calculating at least one of said first voltage value and at least a second voltage value, and performs the coordinate corresponding to the position function.

附图说明 BRIEF DESCRIPTION

[0020] 图1是现有的电阻式触控屏幕的两个电阻板的示意图; [0020] FIG. 1 is a schematic diagram of a conventional two resistor plate resistive touch screen;

[0021] 图2是图1的触控屏幕受触压时的剖视图; [0021] FIG. 2 is a touch screen of FIG. 1 is a sectional view of contact pressure by;

[0022] 图3a至图3c是现有的用于计算接触电阻的触控屏幕的等效电路图; [0022] Figures 3a to 3c is an equivalent circuit for calculating the contact resistance of the conventional touch screen;

[0023] 图4a是本发明一种实施例的电子装置的示意图; [0023] FIG 4a is a schematic view of an electronic device according to an embodiment of the present invention;

[0024] 图4b是本发明另一种实施例的电子装置的示意图; [0024] FIG. 4b is a schematic view of an electronic device according to another embodiment of the present invention;

[0025] 图4c是图4a的电子装置的等效电路图; [0025] Figure 4c is an equivalent circuit diagram of an electronic device 4a;

[0026] 图5a是本发明实施例的触控感测元件的压力侦测方法的示意图; [0026] FIG. 5a is a schematic view of a pressure detection method of a touch sensing element according to an embodiment of the present invention;

[0027] 图5b是本发明另一实施例的触控感测元件的压力侦测方法的示意图; [0027] FIG 5b is a schematic view of a pressure detection method of a touch sensing element according to another embodiment of the present invention;

[0028] 图6是本发明一种实施例的触控感测元件的压力侦测方法的流程图; [0028] FIG. 6 is a flowchart of a method for detecting a pressure of a touch sensing device according to an embodiment of the present invention;

[0029] 图7是本发明另一种实施例的触控感测元件的压力侦测方法的流程图;以及 [0029] FIG. 7 is a flowchart of another method for detecting a pressure touch sensing device according to an embodiment of the present invention; and

[0030] 图8是本发明另一种实施例的触控感测元件的压力侦测方法的流程图。 [0030] FIG 8 is a flowchart of another method for detecting a pressure of a touch sensing element according to the embodiment of the present invention.

[0031] 主要元件符号说明 [0031] Main reference numerals DESCRIPTION

[0032] 10电子装置 Il`X薄膜 [0032] 10 film electronic device Il`X

[0033] 111、112X薄膜的电极 12Y薄膜 [0033] 111,112X thin film electrodes 12Y

[0034] 121、122Y薄膜的电极 13电源 [0034] The electrode film 13 power 121,122Y

[0035] 131电源的高电位端 132电源的低电位端 High potential [0035] 131 low-potential power supply terminal of the power source terminal 132

[0036] 14侦测单元 14a侦测单元的输入端 [0036] The input 14 of the detection unit detecting unit 14a

[0037] 141电容 142模拟数字转换单元 [0037] 141 capacitor 142 analog-digital conversion unit

[0038] 143处理单元 171〜171"开关元件 [0038] The processing unit 143 171~171 "switching element

[0039] 172〜172"开关元件 173开关元件 [0039] 172~172 "switching element 173 of the switching element

[0040] Rtouch接触电阻 T1第一时间区间 [0040] Rtouch contact resistance a first time interval T1

[0041] T2、T2'、T2"第二时间区间VJ1J2电压值 [0041] T2, T2 ', T2 "second time interval the voltage value VJ1J2

[0042] S111 〜S140 步骤 S210 〜S280 步骤 [0042] S111 ~S140 step S210 ~S280 step

[0043] S310〜S38tl步骤 Rtwch接触电阻 [0043] S310~S38tl step Rtwch contact resistance

[0044] 9触控屏幕 91Χ电阻板 [0044] The touch screen 91Χ resistor plate 9

[0045] 92Υ电阻板 X+、XK电阻板的电极 An electrode [0045] 92Υ resistor plate X +, XK resistance plate

[0046] Y+、YT电阻板的电极 P触压点 [0046] Y +, P contact bump electrode plate resistance YT

[0047] ADC模拟数字转换单元 T/第一预设时间 [0047] ADC analog-digital conversion unit T / first predetermined time

[0048] T1"第二预设时间 [0048] T1 "second predetermined time

具体实施方式 Detailed ways

[0049] 为了让本发明的上述和其他目的、特征、和优点能更明显,下文将配合所附图示,作详细说明如下。 [0049] To make the above and other objects, features, and advantages can be more, as will be illustrated with the following, described in detail below.

[0050] 请参考图4a所示,其为本发明实施例的电子装置10的示意图。 [0050] Please refer to FIG. 4a, a schematic diagram of the electronic device 10 of the embodiment of the present invention which. 可以理解的是,图4a中仅显示用于说明本发明所需要的部分构件,并省略了其他构件。 It will be appreciated that, in FIG. 4a shows only some components required for explaining the present invention, and other components are omitted. 所述电子装置10的实施例包括,但不限于,个人数字助理(PDA)、手写装置、笔记本电脑以及移动通信装置等。 The embodiment of the electronic device 10 include, but are not limited to, a personal digital assistant (PDA), a handwriting, a laptop and a mobile communication device or the like. 所述电子装置10包括X薄膜11、Y薄膜12、电源13、侦测单元14以及多个开关元件171〜173,其中该开关元件171〜173例如可为,但不限于,半导体开关。 The electronic device 10 comprises a thin film X 11, Y film 12, power supply 13, a detecting unit 14, and a plurality of switching elements 171~173, 171~173 wherein the switching element can be e.g., but not limited to, semiconductor switch.

[0051] 在此实施例中,X薄膜11与Y薄膜12组成了一种电阻式触控感测元件,该触控感测元件包括(但不限于)触控屏幕(touch screen)或触控板(touchpad)。 [0051] In this embodiment, X and Y film 11 consisting of film 12, a resistive touch sensing elements, the touch sensing elements include (but are not limited to) the touch screen (touch screen) or a touch plate (touchpad). X薄膜11包括分别形成于该X薄膜11上沿着X方向的两相对侧的两电极X+、Γ以及形成于该X薄膜11的上表面的透明电阻层(未标示)。 X X electrodes comprises a thin film 11 formed on two opposite sides of film 11 along the X direction are the X +, Γ and a resistive layer formed on the transparent upper surface of the X film 11 (not shown). Y薄膜12包括分别形成于该Y薄膜12上沿着Y方向的两相对侧的两电极Υ+、Γ以及形成于该Y薄膜12的下表面的透明电阻层(未标示)。 Upsilon Y electrodes comprises a thin film 12 formed on two opposite sides of film 12 along the Y-direction Y respectively +, Γ and formed on the transparent resistive layer (not shown) of the lower surface of the film 12 Y. 电源13具有高电位端131和低电位端132,其中高电位端131通过开关元件171选择性地耦接于X薄膜11的电极X+或Y薄膜12的电极Y+ ;低电位端132通过开关元件172选择性地耦接于X薄膜11的电极Χ_或Y薄膜12的电极Y—。 Power source 13 having a high potential end 131 and a low potential end 132, wherein the high-potential terminal 131 through the switching element 171 is selectively coupled to the X thin film electrodes X + or Y film 11, electrode Y 12 is +; low potential end 132 through the switching element 172 selectively coupled to the Y electrode or film Χ_ Y- electrode film 11 X 12. 在其他实施例中,X薄膜11也可位于Y薄膜12的上方;此时,透明电阻层形成于X薄膜11的下方而透明电阻层形成于Y薄膜12的上方。 In other embodiments, X Y film 11 may also be positioned above the film 12; in this case, the transparent resistive layer is formed below the X transparent resistive film 11 and the Y layer is formed over the film 12.

[0052] 所述侦测单元14用于侦测X薄膜11和Y薄膜12输出的电压值V、根据该电压值V的变化判断触压动作是否为有效触压以及计算触压点P位于X薄膜11和Y薄膜12的位置坐标,其中所述电压值V为电源13的电位的分压。 [0052] The detecting unit 14 for detecting the X film 11 and the voltage value V 12 output from the film Y, is located at the effective contact pressure, and X is a contact pressure point P is calculated according to the change in the voltage value V is determined contact pressure of operation thin film 11 and the Y positional coordinates 12, wherein the voltage value V of the partial pressure of the power supply potential 13. 所述侦测单元14的输入端14a通过开关元件173耦接于X薄膜11的电极X+或Y薄膜12的电极Y+,用于侦测电极X+或电极Y+的电压值V。 The detecting unit 14 is an input terminal 14a via the switching element 173 is coupled to the thin film electrodes X or X + Y of the electrode film 11 in the + Y 12, for detecting the electrode or electrodes X + Y + voltage value V. 在其他实施例中,所述侦测单元14的输入端14a也可通过开关元件173耦接于X薄膜11的电极Γ或Y薄膜12的电极Γ,用于侦测电极Γ或电极Γ的电压值V。 In other embodiments, the input end 14a of the detecting unit 14 may also be coupled to the X-173 film or Gamma] Y electrode film 11 through the switching element electrode Γ 12 for voltage detection electrode or electrodes Gamma] Gamma] is value V. 可以理解的是,图4a所揭示的线路连接方式仅为例示性的,并非用于限定本发明,所述X薄膜11和Y薄膜12与电源13和侦测单元14的连接方式并不限于图4a所揭示的内容。 It will be appreciated that the disclosed line connection in FIG. 4a exemplary only and are not intended to limit the present invention, the attachment means 11 and the X-Y film 12 and the film 13 and the power detecting unit 14 is not limited to FIG. 4a disclosed contents.

[0053] 请参照图4b所示,例如在一种实施例中,第一电源13'用于供电至X薄膜11,其中第一电源13'的高电位端可通过开关元件17Γ耦接于X薄膜11的电极X+;第一电源13'的低电位端可通过开关元件172'耦接于X薄膜11的电极F。 [0053] Referring to FIG 4b, for example, in one embodiment, the first power supply 13 'for supplying power to the thin film X 11, wherein the first power supply 13' may be 17Γ higher potential side coupled to the switching element X X + electrode film 11; a first power supply 13 'may be a low potential side through the switching element 172' is coupled to the X electrode film 11 F. 第二电源13"用于供电至Y薄膜12,其中第二电源13"的高电位端可通过开关元件171"耦接于Y薄膜12的电极Y+;第二电源13"的低电位端可通过开关元件172"耦接于Y薄膜12的电极Γ。侦测单元14可通过开关元件173耦接于X薄膜11的电极X+(或X_)或Y薄膜12的电极¥+(或¥_),用于侦测X薄膜11或Y薄膜12输出的电压值V。图4b中的所述开关元件171'、171"、Π2'、172"以及173例如可为半导体开关。 The second power supply 13 'for supplying power to Y film 12, wherein the second power supply 13' may be high-potential terminal of the switching element 171 "is coupled to the thin film electrodes Y Y + 12; a second power source 13 'via the low potential the switching element 172 "is coupled to the Y film electrode Γ 12 of. detecting unit 14 may be 173 coupled to the X film electrode X 11 is + (or X_) through the switching element or Y thin-film electrode ¥ 12 is + (or ¥ _), for the switching elements 4b to detect X film 11 or voltage values ​​V. FIG Y 12 outputs the film 171 ', 171 ", Π2', 172" and 173, for example, may be a semiconductor switch.

[0054] 所述侦测单元14包括电容141、模拟数字转换单元(ADC) 142以及处理单元143。 [0054] The detecting unit 14 includes a capacitor 141, an analog-digital conversion unit (ADC) 142 and a processing unit 143. 电容141的一端耦接于侦测单元14的输入端14a,其另一端耦接于参考电位;X薄膜11或Y薄膜12上的分压将对电容141进行充电。 One end of the capacitor 141 is coupled to the detecting unit 14 input terminal 14a, and the other terminal coupled to a reference potential; points in the X-Y film 11 or film 12 will press the capacitor 141 is charged. 模拟数字转换单元142的输入端耦接于电容141的第一端,用于将电容141第一端的充电电压值V转换为数字电压值。 A first analog-digital converting unit input terminal 142 coupled to capacitor 141, a first end 141 of the capacitor charge voltage value V is converted to a digital voltage value. 处理单兀143率禹接于模拟数字转换单元142,用于根据模拟数字转换单元142所输出的数字电压值,判定触压动作是否为有效触压。 Yu Wu rate processing unit 143 to the analog-digital converting unit 142, according to the digital value of the analog voltage output from the digital converting unit 142 determines whether the operation is a valid contact pressure contact pressure. 当处理单元143判断触压动作为有效触压时,处理单元143对数字电压值进行后处理(post-processing)程序,例如包括计算触压点P位于X薄膜11的位置坐标或/和位于Y薄膜12的位置坐标,并执行对应于所述位置坐标的功能,其中判断触压动作是否为有效触压的方法将详述于后。 When the post-processing unit 143 determines the touch pressure operation performed when the effective contact pressure, the processing unit 143 of the digital voltage value processing (post-processing) program, for example, includes calculating contact pressure point P located at a position coordinate X of the film 11 and / or the Y the position coordinates of the thin film 12, and executes the corresponding function of the position coordinates, wherein the contact pressure is determined whether the action is a valid touch pressure after a method will be described.

[0055] 请同时参照图4a和图4c所示,其中图4c是图4a的电子装置10的等效电路图。 [0055] Please refer to FIGS. 4a and 4c, wherein FIG. 4c is an equivalent circuit diagram of the electronic device 10 of FIG. 4a. 当物件8,例如笔或手指,触压Y薄膜12上的触压点P时,X薄膜11与Y薄膜12之间会产生接触电阻Rtquqi,如图4c所示。 When an object 8, such as a pen or a finger, the contact pads 12 on the film contact pressure P is Y, X and Y thin film 11 is generated between the contact resistance Rtquqi 12, shown in Figure 4c.

[0056] 当要检测触压点P的X方向位置坐标时,电源13的高电位端131通过开关元件171耦接于Y薄膜12的电极Y+,电源13的低电位端132通过开关元件172耦接于Y薄膜12的电极Γ,侦测单元14通过开关元件173耦接于X薄膜11的电极X+(或X_)。 [0056] When for detecting X-direction position coordinate of the touch pressure point P of the high potential power source 13 terminal 131 through the switching element 171 is coupled to the electrode Y Y film 12 + the low-potential power source 13 terminal 132 through the switching element 172 is coupled Γ Y electrode film 12 connected to the detecting unit 14 via the switching element 173 is coupled to the thin film electrodes X 11 to X + (or X_). 此时,电源13在电极X+(或XO上产生的分压值V与充电电流I将对电容141进行充电,其中物件8触压的压力愈大,接触电阻RT_愈小,而所述充电电流I愈大,电容141将于愈短时间内被充电至预设电压值,例如与电极X+(或Γ)相同的电压值(即分压值V)。模拟数字转换单元142则针对电容141的充电电压值进行取样,并将其转换为数字电压值。处理单元143则根据所述数字电压值,判断电容141的充电电压值在充电一段预设时间后是否达到稳态,其中当处理单元143判断该电容141的充电电压尚未达到稳态时,则忽略所取样的电压值;当处理单元143判断电容141的充电电压已达到稳态时,则对所取样的电压值进行后处理。 At this time, the divided voltage value V power source 13 the charging current is generated on the electrodes X + (or XO I will charge capacitor 141, item 8 wherein the pressure of greater contact pressure, the contact resistance RT_ smaller, and the charging current I larger, the capacitor 141 will be charged in a short time more to the preset voltage value, for example, the same voltage electrodes X + (or Gamma]) (i.e., the divided voltage value V). analog-digital converting unit 142 for the capacitor 141 the charge voltage value is sampled and converted to a digital voltage value. the processing unit 143 according to the charging voltage value of the digital voltage value, the capacitor 141 determines whether the charge reaches a steady state after a preset period of time, wherein when the processing unit when 143 of the capacitor 141 determines the charging voltage has not reached the steady state, the sampled voltage value is ignored; when the processing unit 143 determines the charging voltage of the capacitor 141 has reached a steady state, the voltage value of the post-processing sampled.

[0057] 同理,当要检测触压点P的Y方向位置坐标时,电源13的高电位端131通过开关元件171耦接于X薄膜11的电极X+,电源13的低电位端132通过开关元件172耦接于X薄膜11的电极Γ,侦测单元14通过开关元件173耦接于Y薄膜11的电极Y+(或Γ)。 [0057] Similarly, when to be detected Y-direction position coordinate of the touch pressure point P of the high potential power source 13 terminal 131 through the switching element 171 is coupled to the X-film electrode X 11 + and supply a low potential 13 terminal 132 via a switch element 172 is coupled to the Γ X electrode film 11, the detecting unit 14 via the switching element 173 is coupled to the electrode film 11 Y Y + (or Γ). 此时,电源13在电极Y+(或Υ_)上产生的分压值V与充电电流I将对电容141进行充电。 At this time, the divided voltage value V and the power supply 13 generates a charging current at the electrode Y + (or Υ_) I will charge capacitor 141. 模拟数字转换单元142同样针对电容141的充电电压值进行取样,并将其转换为数字电压值。 Analog-digital converting unit 142 for sampling the same charge voltage value of the capacitor 141, and converts the digital voltage value. 处理单元143则根据数字电压值,判断电容141的充电电压在充电一段预设时间后是否达到稳态。 The processing unit 143 according to the digital voltage value, the capacitor 141 determines whether charging the charging voltage reached a steady state after a preset period of time.

[0058] 接着说明处理单元143判断电容141的充电电压是否达到稳态的方式。 [0058] Next, the processing unit 143 determines whether the charge voltage of the capacitor 141 reaches a steady state manner. 请同时参照图4a、图4c和图5a所示,第一时间区间T1开始时,电源13通过开关元件171、172耦接于电极Y+和y_ (或X+和χ_),且侦测单元14通过开关元件173耦接于电极X+或τ (Y+或Γ)。 Referring to Figures 4a, 4c and as shown, when the first time interval T1 starts, power supply 13 through the switching element 171 is coupled to the electrode and Y_ Y + (or X + and χ_), and the detection unit 14 in FIG. 5a the switching element 173 is coupled to the electrode or the X + τ (Y + or Γ). 在第一时间区间T1内,电极X+或Χ_(Υ+或Υ_)上的分压值V将对电容141充电以达到预设电压;在第二时间区间T2,模拟数字转换单元142开始对电容141的充电电压值进行取样,并将所取样的多个电压值转换为数字电压值。 In the first time interval T1, the divided voltage value V X + electrode or Χ_ (Υ + or Υ_) will charge capacitor 141 to reach a predetermined voltage; the second time interval T2, the analog-digital conversion unit 142 starts the capacitor charge voltage value is sampled 141, and a plurality of the sampled voltage value is converted to a digital voltage value. 处理单元143根据数字电压值判断电容141的充电电压值是否达到稳态。 Processing unit 143 according to the digital voltage value of the capacitor 141 determines the charging voltage value has reached a steady state.

[0059] 例如图5a所示,当物件8以较小的力道触压Y薄膜12时,在X薄膜11与Y薄膜之间会形成较大的接触电阻R™uch。 [0059] The example shown in FIG. 5a, when the object 8 with a small contact pressure force of Y film 12, between the X-Y film 11 and the film will form a large contact resistance R ™ uch. 当电源13被耦接于电极Y+和Y_(或X+和X_)且侦测单元17被耦接于电极X+或X-(Y+或Y—)时,电容141在第一时间区间T1内的充电电压值例如以V1曲线变化;在第二时间区间T2内,模拟数字转换单元142开始对充电电压值V1的末段进行取样而得到多个数字电压值;处理单元143则计算所取样的电压值的变化,并判断该电压值是否达到稳态,例如处理单元143计算两相邻取样电压值之差、两取样电压值之差、多个两相邻取样电压值之差的平均以及多个两相邻取样电压值之差的变化率,并将计算结果与预设门槛值相比对。 When the power supply 13 is coupled to the electrode Y + and Y_ (or X + and X_) and the detection unit 17 is coupled to the electrode X + or X-(Y + or Y-), the capacitor 141 charged at the first time interval T1 is voltage value V1, for example, varying curve; in the second time interval T2, the analog-digital conversion unit 142 starts the last paragraph of the charging voltage value V1 is sampled to obtain a plurality of digital voltage values; processing unit 143 of the sampled voltage value is calculated changes, and determines whether the voltage value reaches a steady state, for example, a difference processing unit 143 calculates the difference between two adjacent sampled voltage values, two sampled voltage values, the average difference between two adjacent sampling a plurality of voltage values ​​and a plurality of two adjacent sampling rate of change of the voltage difference value, and the results compared with the predetermined threshold value pairs. 当所取样的电压值的变化大于所述门槛值时,则表示尚未达到稳态;反之,当所取样的电压值的变化小于所述门槛值时,则表示已达到稳态。 When the change in the sampled voltage value is greater than the threshold, then not yet reached a steady state; the other hand, when the variation of the sampled voltage value is less than the threshold value, it indicates that a steady state has been reached. 例如在一种实施例中,处理单元143取样第二时间区间1~2起始时的电压值V11以及结束时的电压值Vln,并计算其差值(Vln-V11);接着,处理单元143将该差值(Vln-V11)与门槛值相比较,以判定电容141的充电电压值的变化状态。 In one example embodiment, the value of the voltage V11 at the sampling processing unit 143 second time interval 1 to 2 and the starting voltage value at the end of VLN embodiment, and calculating the difference (Vln-V11); Next, the processing unit 143 the difference (Vln-V11) is compared with a threshold value to determine the change in state of the charging voltage value of the capacitor 141.

[0060] 同理,当物件8以较大的力道触压Y薄膜12时,在X薄膜11与Y薄膜12之间会形成较小的接触电阻Rtouch,当电源13被耦接于电极Y+和Γ (或X+和X_)且侦测单元17被耦接于电极X+或Γ(Y+或Γ)时,电容141在第一时间区间T1内的充电电压值例如以V2曲线变化。 [0060] Similarly, when the object 8 with a large contact pressure force of Y film 12, between the X-Y film 11 and the film 12 will form a small contact resistance Rtouch, when the power supply 13 is coupled to the electrode and the Y + when Gamma] (or X + and X_) and the detection unit 17 is coupled to the electrode or the X + Γ (Y + or Γ), the capacitor charge voltage value 141 during the first time interval T1, for example, a change in the curve V2. 在第二时间区间T2内,模拟数字转换单元142将对充电电压值V2进行取样而得到多个数字电压值;处理单元143则判断所取样的电压值是否达到稳态。 In the second time interval T2, the analog-digital conversion unit 142 will charge voltage value V2 is sampled to obtain a plurality of digital voltage values; processing unit 143 determines whether or not the sampled voltage value reaches a steady state. 可以理解的是,数字模拟单元142对电容141的充电电压值的取样数目可根据不同应用而决定,取样数目愈多,则可得到愈精准的侦测结果。 It will be appreciated that the number of samples of a digital-analog voltage value of the charging unit 142 of the capacitor 141 may be determined depending on the application, the more the number of samples can be obtained more accurate detection result. 所述第二时间区间T2的时间长短可根据实际应用而决定,第二时间区间T2愈长,则可得到愈精准的侦测结果。 T2 is the second time interval time can be determined depending on the application, a second longer time interval T2 can be obtained more accurate detection result. 在其他实施例中,图5a的电压曲线V1J2也可用于表示电容141分别耦接于X薄膜的电极X+或X_以及Y薄膜的电极Y+或Y_时的充电电压。 In other embodiments, the voltage curve of FIG V1J2 5a also be used to represent the capacitance 141 are coupled to the charging voltage of the Y electrodes or X + X film and the Y film + X_ or Y_.

[0061] 请参照图6所示,其是根据本发明一种实施例的触控感测元件的压力侦测方法的流程图。 [0061] Referring to FIG. 6, which is a flow chart of a method for detecting a pressure of a touch sensing device according to an embodiment of the present invention. 所述侦测方法包括下列步骤:提供第一电位差至第一薄膜的两电极(步骤S111);利用第一电位差的分压,对电容进行充电,并取样该电容的充电电压,以取得多个第一电压值,并根据该多个第一电压值求得第一电压值的变化(步骤S112);提供第二电位差至第二薄膜的两电极(步骤S121);利用所述第二电位差的分压,对所述电容进行充电,并取样该电容的充电电压,以取得多个第二电压值,并根据该多个第二电压值求得第二电压值的变化(步骤S122);将所述第一电压值的变化和第二电压值的变化与门槛值相比较(步骤s113、S123);当所述第一电压值的变化和第二电压值的变化中的一者大于所述门槛值时,判定此次取样无效(步骤S13tl);以及当所述第一电压值的变化和第二电压值的变化均小于所述门槛值时,对所述多个第一电压值中的至少一者和多个第二电压值中的至少一 The detection method comprises the steps of: providing a first potential difference to the electrodes of the first film (step S111); a first potential difference using the partial pressure of the capacitor is charged, and the charging voltage of the capacitor is sampled to obtain a plurality of first voltage values, and the calculated change (step S112) a first voltage value based on the plurality of first voltage values; providing a second potential difference between the two electrodes to a second film (step S121); the use of two dividing the potential difference, the capacitor is charged, and the charging voltage of the capacitor is sampled to obtain a second plurality of voltage values, and the variation of the second voltage value is obtained based on the plurality of second voltage values ​​(step S122); the variation change of the first voltage value and the second voltage value is compared with a threshold (step s113, S123); when the variation change of the first voltage value and the second voltage value in a when the signal exceeds the threshold value, the sample is determined invalid (step S13tl); and when the first change in the voltage value and the change of the second voltage value less than the threshold value, the first plurality voltage values ​​and at least one of a second plurality of voltage values ​​to at least a 进行后处理(步骤S14tl)。 Post-processing (step S14tl). 在此实施例中,步骤S111、S121步骤中的第一电位差与第二电位差可为相同或两不同电位差,且S113、S123中的门槛值可为一相同或两不同门槛值。 In this embodiment, step S111, the difference between the first potential and the second potential difference may in step S121 is the same or two different potential differences, and S113, S123, the threshold may be a same or two different thresholds.

[0062] 请同时参照图4a至图6,在第一时间区间T1开始时,电源13通过开关元件171、172被耦接于Y薄膜(或X薄膜)的两电极Y+和Γ (或X+和X_)且侦测单元14通过开关元件173被耦接于X薄膜(或Y薄膜)的两电极X+和X—(或Y+和Y—)中的一者。 [0062] Please refer to FIGS. 4a to FIG. 6, when the first time interval T1 starts, power supply 13 through the switching element 171 is coupled to a Y film (X or film), and two electrodes Gamma] Y + (or X + and the X_ X electrodes) and detection unit 14 is coupled to X 173 is a film (or thin film Y) through the switching element and + X- (or Y + and Y-) one. 在此实施例中,图5a的电压曲线V1, V2表示电容141分别耦接于X薄膜(或Y薄膜)和Y薄膜(或X薄膜)时的充电电压;此外,电源13可分别提供电位差至Y薄膜或X薄膜的两电极一段不同时间后,侦测单元14才开始取样所述电容的充电电压。 In this embodiment, FIG voltage curve V1 5a of, V2 represents the capacitance 141 are coupled to the charging voltage of the X film (or Y film) and Y film (or X film); In addition, the power supply 13 may be separately provided a potential difference after the X or Y to thin film electrodes of two different period of time, the detecting unit 14 begin sampling the capacitor charging voltage. 例如图5b所示,电源13提供电位差至Y薄膜(或X薄膜)的两电极第一预设时间T/后,侦测单元14在第二时间区间T2'中取样所述电容的充电电压;电源13提供电位差至X薄膜(或Y薄膜)的两电极第二预设时间T1"后,侦测单元14在第二时间区间T2"中取样所述电容的充电电压。 After, for example, as shown in FIG. 5b, the power supply 13 providing a potential difference film to Y (or X film) electrodes first predetermined time T /, the detection sampling unit 14 for charging the capacitor voltage at a second time interval T2 'in ; ", the detecting unit 14 at a second time interval T2" the power supply 13 provides a potential difference film to X (or Y film) electrodes of said second predetermined time T1 sampling capacitor charging voltage. 其中,所述第一预设时间T/和第二预设时间T1"旨在确定取样起始时间,取样起始时间不同会得到不同的取样效率;所述第一预设时间T/和第二预设时间T1"可根据电容的大小、电极X+或τ (Y+或Υ_)上的分压值V以及充电效率而定,例如充电效率愈高,则第一预设时间T1 /和第二预设时间T1"可愈短。 Wherein said first predetermined time T / and the second preset time T1 "is intended to determine the start time of the sampling, the sampling start time will be different in different sampling efficiency; said first predetermined time T / and two preset time T1 "can be determined according to the divided voltage value V and the charging efficiency of the capacitor size, or electrodes X + τ (Y + or Υ_), for example, the higher the charging efficiency, the first predetermined time T1 / second preset time T1 "can be shorter.

[0063] 与侦测单元14耦接的电极(X+或Γ)上的电压在第一时间区间T1内对电容141充电(步骤sm),模拟数字转换单元142在第二时间区间T2取样电容141的充电电压,并取得多个第一电压值(如图5a所示的V11至Vln或V21至V2n),并根据该多个第一电压值求得第一电压值的变化,例如充电电压值V1的变化(步骤S112),其中第一电压值的变化可被储存于处理单元143中。 [0063] The voltage of the electrode (X + or Gamma]) on the detecting unit 14 coupled to the first time interval T1 for charging the capacitor 141 (Step sm), the analog-digital conversion unit 142 in the second time interval T2 sampling capacitors 141 charging voltage, and a first voltage value to obtain a plurality of (in FIG. 5a to V11 or V21 to V2n Vln), and the variation of the first voltage value is obtained based on the plurality of the first voltage value, the charging voltage value e.g. V1 is changed (step S112), wherein the variation of the first voltage value may be stored in the processing unit 143. [0064] 接着,电源13通过开关元件171、172而被耦接于X薄膜(Y薄膜)的两电极X+和X_(Y+和Γ),且侦测单元14通过开关元件173而被耦接于Y薄膜(X薄膜)的两电极Y+和YHX_)中的一者。 [0064] Next, the power supply 13 through the switching element 171 is coupled to the X electrodes X film (Y film) and X_ + (Y + and Gamma]), and the detecting unit 14 via the switching element 173 is coupled to the Y film (X film) and the electrodes Y + YHX_) of one.

[0065] 与侦测单元14耦接的电极(¥+或¥_)上的电压在第一时间区间T1内对电容141充电(步骤S121),模拟数字转换单元142在第二时间区间T2取样电容141的充电电压,并取得多个第二电压值(如图5a所示的V21至V2n或V11至Vln),并根据该多个第二电压值求得第二电压值的变化,例如充电电压值V2的变化(步骤S122)。 [0065] The voltage across the charging capacitor 141 (step S121), the analog-digital conversion unit 142 in the second time interval T2 the sample and the electrode (or ¥ _ ¥ +) coupled to the detecting unit 14 in the first time interval T1 charging voltage and the second voltage value to obtain a plurality of capacitor 141 (shown in Figure 5a to V21 or V11 to V2n VLN), and the change of the second voltage value is obtained based on the plurality of second voltage values, such as charging change voltage value V2 (step S122). 接着,处理单元143将所述第一电压值的变化和第二电压值的变化与预设门槛值相比较,其中该门槛值可根据电子装置10所需的侦测精确度而设定(步骤S113、S123)。 Next, the processing unit 143 changes the predetermined threshold value is compared with a first voltage value and the variation value of the second voltage, wherein the threshold detector 10 according to the desired accuracy of the electronic device is set (step S113, S123). 当所述第一电压值的变化和第二电压值的变化中的一者大于门槛值时,则判定电压值未达稳态,亦即处理单元143判定此次取样无效,并忽略(ignore)所取样的多个第一电压值和第二电压值,同时结束此次侦测程序(步骤S13tl)。 When a change of change of the first voltage value and the second voltage value is greater than one threshold, it is determined that a voltage value less than the steady state, i.e. the processing unit 143 determines that the sample is invalid and is ignored (the ignore) a plurality of first voltage values ​​and the sampled second voltage value, while the end of the detection procedure (step S13tl). 当所述第一电压值的变化和第二电压值的变化均小于门槛值时,则表示第一电压值和第二电压值已达到稳态,处理单元143则对所述多个第一电压值中的至少一者和所述多个第二电压值中的至少一者进行后处理(步骤S14tl),例如处理单元143根据第一电压值Vln(或V2n)和第二电压值V2n(或Vln)计算触压点P的位置坐标,并执行对应于该位置坐标的功能。 When the change of the value of the first voltage and the second voltage change is less than the threshold value, it indicates that a first voltage and a second voltage value has reached a steady state, the processing unit 143 of the first plurality of voltage value of at least one of the plurality of second voltage values ​​and at least one post-processing (step S14tl), for example, the processing unit 143 according to the first voltage value VLN (or V2n) and a second voltage value V2n (or VLN) calculates the coordinates of the touch position P of the pressure point and the position coordinate corresponding to the execution of the function. 可以理解的是,并不需要限定求得所述第一电压值的变化和所述第二电压值的变化的顺序。 It will be appreciated that it is not necessary to define the sequence obtained by changing the change value of the first voltage and the second voltage value.

[0066] 在本发明的实施例中,所述第一电压值的变化例如为两相邻第一电压值之差、两第一电压值之差、多个两相邻第一电压值之差的平均以及多个两相邻第一电压值之差的变化率等。 [0066] In an embodiment of the present invention, the variation of the first voltage value, for example, a first voltage difference between two adjacent values, a first voltage difference between the two values, the difference between two adjacent first plurality of voltage values and a plurality of adjacent two of the average rate of change of the difference between the first voltage value. 同样地,所述第二电压值的变化例如为两相邻第二电压值之差、两第二电压值之差、多个两相邻第二电压值之差的平均以及多个两相邻第二电压值之差的变化率等。 Similarly, the second voltage value is a change, for example, the difference between two values ​​adjacent to the second voltage, the second voltage difference between the two values, the mean difference between the two adjacent second plurality of voltage values ​​and a plurality of two adjacent a second difference between the rate of change of the voltage value.

[0067] 请参照图7所示,其显示根据本发明另一种实施例的触控感测元件的压力侦测方法的流程图。 [0067] Referring to FIG. 7, which shows a flow chart of another method for detecting a touch pressure sensing element according to an embodiment of the present invention. 所述侦测方法包括下列步骤:·[0068] 步骤S21tl:提供第一电位差至第一薄膜的两电极。 The detection method comprises the following steps: [0068] Step S21tl: providing a first potential difference to the electrodes of the first film.

[0069] 步骤S22tl:利用第一电位差的分压,对电容进行充电,并取样该电容的充电电压,以取得多个第一电压值,并根据该多个第一电压值求得第一电压值的变化。 [0069] Step S22tl: using a first potential difference in the partial pressure, a capacitor is charged, and the charging voltage of the capacitor samples, to obtain a first plurality of voltage values, and first voltage values ​​based on the determined first plurality change in the voltage value.

[0070] 步骤S23tl:提供第二电位差至第二薄膜的两电极。 [0070] Step S23tl: providing a second potential difference to the two electrodes of the second film.

[0071] 步骤S24tl:利用第二电位差的分压,对所述电容进行充电,并取样所述电容的充电电压,以取得多个第二电压值,并根据该多个第二电压值求得第二电压值的变化。 [0071] Step S24tl: partial pressure using the second potential difference, the capacitor is charged, and the charging voltage of the capacitor samples to obtain a second plurality of voltage values, and second voltage values ​​based on the plurality of seek change of the second voltage value obtained.

[0072] 步骤S25tl:将所述第一电压值的变化与门槛值相比较,当所述第一电压值的变化大于所述门槛值时,则进入步骤S26tl;当所述第一电压值的变化小于所述门槛值时,则进入步骤'。 [0072] Step S25tl: a first voltage change of the threshold value and comparing, when a change in the voltage value is greater than the first threshold, then step S26tl enters; when the first voltage value when the change is less than the threshold value, the process proceeds to step '.

[0073] 步骤S26tl:判定此次取样无效。 [0073] Step S26tl: the sample is determined invalid.

[0074] 步骤S27tl:将所述第二电压值的变化与门槛值相比较,当所述第二电压值的变化大于所述门槛值时,则进入步骤S26tl;当所述第二电压值的变化小于所述门槛值时,则进入步 [0074] Step S27tl: the change of the second voltage value is compared with a threshold value, when a change in the second voltage value is greater than the threshold, then step S26tl enters; when the second voltage value when the change is less than the threshold value, the process proceeds to step

骤S280。 Step S280.

[0075] 步骤S28tl:对所述多个第一电压值中的至少一者以及所述多个第二电压值中的至少一者进行后处理,该后处理可包括(但不限于):根据所述至少一个第一电压值以及所述至少一个第二电压值,计算触压点的位置坐标或/及执行对应于该位置坐标的功能。 [0075] Step S28tl: after said plurality of first voltage values ​​and at least one of the plurality of second voltage values ​​at least one of processing, the post-processing may include (but are not limited to): The at least one of said first voltage value and the at least one second voltage value to calculate position coordinates of contact pads or / and performing a function corresponding to the position coordinates. [0076] 此实施例与图6实施例的差别在于,本实施例的处理单元143先判定第一电压值是否已达稳态(即该第一电压值的变化是否小于门槛值),当第一电压值未达稳态时,处理单元143将忽略所取样的所有电压值并结束此次侦测程序(步骤S26tl),并回到步骤S21tl重新执行侦测程序。 [0076] The difference between this embodiment and FIG. 6 in that embodiment, the processing unit 143 of the present embodiment first determines whether a first voltage value has reached steady state (i.e., the change in the voltage value is smaller than a first threshold value), when the first a voltage less than the steady-state value, the processing unit 143 ignores all the sampled voltage values ​​and ends the detection program (step S26tl), and returns to step S21tl re-execute the detection procedure. 此外,各步骤的详细实施方式与图6相类似,故于此不再赘述。 Further, detailed embodiments of the steps of FIG. 6 are similar, and therefore omitted herein. 在其他实施例中,步骤S25tl与步骤S27tl的顺序可互换。 In other embodiments, the order of steps and the step S27tl S25tl interchangeable.

[0077] 请参照图8所示,其为根据本发明另一种实施例的触控感测元件的压力侦测方法的流程图。 [0077] Referring to FIG. 8, which is a flowchart of another method for detecting the pressure of the touch sensing device according to an embodiment of the present invention. 所述侦测方法包括下列步骤: The detection method comprises the steps of:

[0078] 步骤S31tl:提供第一电位差至第一薄膜的两电极。 [0078] Step S31tl: providing a first potential difference to the two electrodes of the first film.

[0079] 步骤S32tl:利用第一电位差的分压,对电容进行充电,并取样该电容的充电电压,以取得多个第一电压值,并根据该多个第一电压值求得第一电压值的变化。 [0079] Step S32tl: using a first potential difference in the partial pressure, a capacitor is charged, and the charging voltage of the capacitor samples, to obtain a first plurality of voltage values, and first voltage values ​​based on the determined first plurality change in the voltage value.

[0080] 步骤S33tl:将第一电压值的变化与门槛值相比较,当第一电压值的变化大于门槛值时(也即当所述第一电压值均未达到稳态时),则进入步骤S34tl;当第一电压值的变化小于门槛值时(也即当所述第一电压值的至少一者已达到稳态时),则进入步骤s35(l。 [0080] Step S33tl: The change compared with the first threshold voltage value, when the variation of the first voltage is greater than a threshold value (i.e., when the first voltage value did not reach the steady state), the routine proceeds step S34tl; when the change value is smaller than the first voltage threshold (i.e., when at least one of said first voltage has reached a steady state value), the process proceeds to step s35 (l.

[0081] 步骤S34tl:判定此次取样无效。 [0081] Step S34tl: the sample is determined invalid.

[0082] 步骤S35tl:提供第二电位差至第二薄膜的两电极。 [0082] Step S35tl: providing a second potential difference to the two electrodes of the second film.

[0083] 步骤S36tl:利用第二电位差的分压,对所述电容进行充电,并取样该电容的充电电压,以取得多个第二电压值,并根据该多个第二电压值求得第二电压值的变化。 [0083] Step S36tl: using the second potential difference dividing, the capacitor is charged, and the charging voltage of the capacitor is sampled to obtain a second plurality of voltage values, and based on the plurality of second voltage values ​​obtained change of the second voltage value.

[0084] 步骤S37tl:将第二电压值的变化与门槛值相比较,当第二电压值的变化大于门槛值时(也即当所述第二电压值均未达到稳态时),则进入步骤S34tl ;当第二电压值的变化小于门槛值时(也即当所述第二电压值的至少一者已达到稳态时),则进入步骤s38(l。 [0084] Step S37tl: the change is compared with a second threshold voltage value when the voltage value is greater than the second variation threshold value (i.e., when the second voltage value did not reach a steady state), the process proceeds step S34tl; when the change value is smaller than the second threshold voltage (i.e., when at least one of said second voltage has reached a steady state value), the process proceeds to step s38 (l.

[0085] 步骤S38tl:对所述多个第一电压值中的至少一者以及多个第二电压值中的至少一者进行后处理,该后处理可包括(但不限于):根据至少一个第一电压值以及至少一个第二电压值,计算触压点的位置坐标和/或执行对应于该位置坐标的功能。 [0085] Step S38tl: after said plurality of first voltage values ​​and at least one of a second plurality of voltage values ​​to at least one of processing, the post-processing may include (but are not limited to): According to at least one a first voltage value and the at least one second voltage value to calculate the position coordinates of contact pads and / or performing a function corresponding to the position coordinates.

[0086] 此实施例与图6实施例的差别在于,本实施例中,侦测单元14先取样X薄膜或Y薄膜中的一者的电极电压,并判定该电压值是否已达到稳态,若尚未达到稳态,则立即结束此次侦测程序并回到步骤S31tl重新执行侦测程序。 [0086] This embodiment of FIG. 6 embodiment in that the difference, in the present embodiment, the detecting unit 14 to the sample film X or Y electrode voltage of one of the film and determines whether the voltage value has reached a steady state, If it has not reached a steady state, then an immediate end to the detection procedure and returns to step S31tl re-execute the detection procedure. 当判定X薄膜或Y薄膜中的一者的电极电压已达稳态后,才取样另一薄膜的电极电压,并接着进行稳态判定。 When the voltage determining electrode X or Y thin film of one reached steady state, only the sampling voltage at the other electrode of the film, and followed by settlement determination. 如此,可提高侦测单元14的运作效率。 So, can improve the operational efficiency of the detection unit 14. 此外,各步骤的详细实施方式与图6相类似,故于此不再赘述。 Further, detailed embodiments of the steps of FIG. 6 are similar, and therefore omitted herein.

[0087] 在上述本发明的说明中,X方向和Y方向为两相互垂直的方向,例如显示屏幕或触控板的长和宽的方向。 [0087] In the above description of the present invention, X and Y directions of two mutually perpendicular directions, for example, the length and width direction of the display screen or touchpad.

[0088] 如前所述,由于现有的触控屏幕(Touch screen)通过计算接触电阻以判定触压压力,具有较低的精确度而容易导致误判。 [0088] As described above, since the conventional touch screen (Touch screen) is determined by calculating the contact pressure of the contact resistance to pressure, with less accuracy easily cause misjudgment. 本发明另提出一种触控感测元件的压力侦测方法以及使用该方法的电子装置,通过侦测电容的充电电压变化以判定触压动作是否为有效触压,且由于不须直接计算电阻值,具有较高的位置精确度。 The present invention further provides a touch sensing element is a pressure detecting method and an electronic apparatus using the method, the charging voltage detecting changes in capacitance to determine the action is a valid contact pressure contact pressure, and is not required since the direct calculation of resistance value, has a high positional accuracy.

[0089] 虽然本发明已被上述实施例所揭示,然而上述实施例并非用于限定本发明,任何本发明所属技术领域中的技术人员,在不脱离本发明的精神和范围内,应当可以作出各种变化与修改。 [0089] While the present invention has been disclosed in the above-described embodiments, the above description is not intended to limit the invention in any technical field of the present invention pertains to the art, without departing from the spirit and scope of the invention should be made various changes and modifications. 因此本发明的保护范围应当以所附权利要求书所界定的范围为准。 Therefore, the scope of the invention should be defined by the appended claims scope of equivalents.

Claims (9)

1.一种触控感测元件的压力侦测方法,所述触控感测元件包括第一薄膜和第二薄膜,每个薄膜包括两电极,其中所述第一薄膜的两电极分别形成于所述第一薄膜上沿第一方向的两相对侧,所述第二薄膜的两电极分别形成于所述第二薄膜上沿第二方向的两相对侧,所述第一方向与所述第二方向相互垂直,所述侦测方法包括下列步骤: 提供第一电位差至所述第一薄膜的两电极; 利用所述第一电位差的分压,对电容进行充电; 取样所述电容的充电电压,以取得多个第一电压值,并根据该多个第一电压值求得第一电压值的变化; 将所述第一电压值的变化与第一门槛值相比较; 提供第二电位差至所述第二薄膜的两电极; 利用所述第二电位差的分压,对所述电容进行充电; 取样所述电容的充电电压,以取得多个第二电压值,并根据所述多个第二电压值求得第 A method of detecting a touch pressure sensing element, the sensing element comprises a first touch and a second thin film, each film comprising two electrodes, wherein the electrodes are formed in the first film two opposite sides in the first direction on the first film, the second thin film electrodes respectively formed on two opposite sides in the second direction on the second film, the first direction and the second two mutually perpendicular directions, said detecting method comprising the steps of: providing a first potential difference to the two electrodes of the first film; partial pressure using the first potential difference, a capacitor is charged; the sampling capacitance charging voltage to obtain a first plurality of voltage values, and the variation of the first voltage value is obtained based on the plurality of first voltage values; changes in the value of the first voltage is compared with a first threshold value; providing a second to the potential difference between both the electrodes of the second film; second potential difference with the partial pressure of the capacitor is charged; the charging voltage of the capacitor samples to obtain a second plurality of voltage values, and in accordance with the said plurality of second voltage values ​​obtained by 二电压值的变化; 将所述第二电压值的变化与第二门槛值相比较,其中所述第一门槛值与所述第二门槛值为一相同或两不同门槛值; 当所述第一电压值的变化大于所述第一门槛值时或当所述第二电压值的变化大于所述第二门槛值时,忽略所述多个第一电压值和第二电压值;以及当所述第一电压值的变化小于所述第一门槛值以及当所述第二电压值的变化小于所述第二门槛值时,根据所述至少一个第一电压值以及所述至少一个第二电压值计算位置坐标并执行对应于所述位置坐标的功能。 Variation of the second voltage value; the change of the second voltage value is compared with a second threshold, wherein the first threshold and the second threshold value is a same or two different threshold; when the first or when the change of the second voltage value is greater than the second threshold value when a change in the voltage value is greater than the first threshold value, ignoring the plurality of first voltage value and the second voltage value; and when the changes said first voltage value is less than the first threshold value and when the change in the second voltage value less than the second threshold value, according to at least one of said first voltage value and the at least one second voltage value calculating position coordinates and the coordinate position corresponding to the execute function.
2.根据权利要求1所述的侦测方法,其中,所述第一电压值的变化指两相邻第一电压值之差、两第一电压值之差、多个两相邻第一电压值之差的平均以及多个两相邻第一电压值之差的变化率中的一者;以及所述第二电压值的变化指两相邻第二电压值之差、两第二电压值之差、多个两相邻第二电压值之差的平均以及多个两相邻第二电压值之差的变化率中的一者。 The detection method according to claim 1, wherein the first voltage value change means the difference between a first voltage difference between two adjacent values, two first voltage values, two adjacent first plurality of voltage and the average rate of change of the difference between the first voltage value of the difference between two adjacent values ​​of the plurality of one; and a second change in the voltage difference between the second value refers to the value of the two adjacent voltage, the second voltage value two the difference between the average difference between two adjacent second plurality of voltage values ​​and a change rate of the second plurality of voltage difference between two adjacent values ​​of one.
3.根据权利要求1所述的侦测方法,其中,提供所述第一电位差至所述第一薄膜的两电极并经过第一预设时间后,开始取样所述电容的充电电压,以取得所述多个第一电压值;以及提供所述第二电位差至所述第二薄膜的两电极并经过第二预设时间后,开始取样所述电容的充电电压,以取得所述多个第二电压值。 The detection method according to claim 1, wherein providing the first potential difference to the two electrodes and the first film after the first predetermined time, starts sampling of the capacitor charge voltage acquiring the plurality of first voltage values; and providing the second electrical potential difference to the two electrodes of the second film and a second predetermined time after the start of the sampling capacitor charge voltage to obtain a plurality a second voltage value.
4.一种电子装置,该电子装置包括: 第一薄膜,该第一薄膜具有两电极,其中所述第一薄膜的两电极分别形成于所述第一薄膜上沿第一方向的两相对侧; 第二薄膜,该第二薄膜具有两电极,其中所述第二薄膜的两电极分别形成于所述第二薄膜上沿第二方向的两相对侧,且所述第一方向与所述第二方向相互垂直; 电源,该电源用于提供第一电位差至所述第一薄膜的两电极或提供第二电位差至所述第二薄膜的两电极; 电容,该电容用于选择性耦接于所述第一薄膜的两电极中的一者或所述第二薄膜的两电极中的一者,并通过该耦接的电极接收所述第一电位差或第二电位差的分压,以进行充电;以及处理单元,该处理单元用于取样所述电容的充电电压,以取得多个第一电压值与多个第二电压值,并根据该多个第一电压值来求得第一电压值的变化并根据该多 An electronic device, the electronic device comprising: a first film, the first film has two electrodes, wherein the first thin film electrodes are formed two opposite sides in the first direction on the first film ; second film, the second film has two electrodes, wherein the second thin film electrodes respectively formed on two opposite sides in the second direction on the second film, and the first direction and the second two directions perpendicular to each other; a power supply for supplying a first potential difference to the two electrodes or a second difference between the potential of the first film to the second thin film electrodes; a capacitance for selectively coupling two electrodes connected to two electrodes of the first film or a second film of one, and by the coupling electrode receives said first potential or the second potential difference between the partial pressure difference , to charge; and a processing unit, the processing unit for sampling the capacitor charging voltage to obtain a plurality of first voltage values ​​and the plurality of second voltage values, and to obtain a plurality of first voltage values ​​based on the variation of the first voltage value according to the multi- 个第二电压值来求得第二电压值的变化,并用于将该第一电压值的变化与第一门槛值相比较并将该第二电压值的变化与第二门槛值相比较; 其中,当所述第一电压值的变化小于所述第一门槛值时以及当所述第二电压值的变化小于所述第二门槛值时,所述处理单元根据所述至少一个第一电压值以及所述至少一个第二电压值计算位置坐标并且执行对应于所述位置坐标的功能。 Second voltage value obtained by the voltage change of the second value, and for the variation of the first voltage value is compared with the first threshold and the second variation of the voltage value and the second threshold value; wherein when the voltage change of the first value is less than the first threshold value and when a change in the second voltage value less than the second threshold value, the processing unit according to at least one of said first voltage value and the at least one second voltage value, and computing a position corresponding to the position coordinate performs a function.
5.根据权利要求4所述的电子装置,其中,当所述第一电压值的变化大于所述第一门槛值或所述第二电压值的变化大于所述第二门槛值时,所述处理单元忽略所述多个第一电压值和第二电压值。 5. The electronic device according to claim 4, wherein, when the change in the first voltage value is greater than the first threshold value or variation of said second voltage is greater than the second threshold value, the processing means ignoring the first voltage value and a second plurality of voltage values.
6.根据权利要求4所述的电子装置,其中,所述电源通过开关元件选择性地耦接于所述第一薄膜的两电极或所述第二薄膜的两电极,且所述电容通过开关元件选择性地耦接于所述第一薄膜的两电极中的一者或所述第二薄膜的两电极中的一者。 6. The electronic device as claimed in claim 4, wherein said power supply through the switching element selectively coupled to the electrodes of the first film or the second film electrodes, and the capacitor through switch element selectively coupled to the two electrodes or both the electrodes of the first film in a second one of one film.
7.根据权利要求6所述的电子装置,其中,当所述电源被耦接于所述第一薄膜的两电极时,所述电容被耦接于所述第二薄膜的两电极中的一者;当所述电源被耦接于所述第二薄膜的两电极时,所述电容被耦接于所述第一薄膜的两电极中的一者。 7. The electronic device according to a claim 6, wherein, when the power supply is coupled to the first thin film electrodes, said capacitance being coupled to the second thin film electrodes in the person; when the power supply is coupled to the second thin film electrodes, said capacitance being coupled to the two electrodes of the first thin film of one.
8.根据权利要求4所述的电子装置,该装置还包括: 模拟数字转换单元,该模拟数字转换单元耦接于所述电容,将该电容的充电电压转换为所述多个第一电压值和第二电压值。 The electronic device as claimed in claim 4, the apparatus further comprising: an analog-digital conversion unit, the analog-digital conversion unit is coupled to the capacitor, the charging voltage into the capacitor voltage value to the first plurality and a second voltage value.
9.根据权利要求4所述的电子装置,其中,所述第一电压值的变化指两相邻第一电压值之差、两第一电压值之差、多个两相邻第一电压值之差的平均以及多个两相邻第一电压值之差的变化率中的一者;以及所述第二电压值的变化指两相邻第二电压值之差、两第二电压值之差、多个两相邻第二电压值之差的平均以及多个两相邻第二电压值之差的变化率中的一者。 The electronic device according to claim 4, wherein the first voltage value change means the difference between a first voltage difference between two adjacent values, two first voltage values, a plurality of two adjacent first voltage value and the average rate of change of voltage difference between a first value of the difference between two adjacent plurality of one; and a second change in the voltage difference between the second voltage value refers to the value of the two adjacent two of the second voltage value the difference, the difference between the average of the second plurality of adjacent two voltage values ​​and a change rate of the second plurality of voltage difference between two adjacent values ​​of one.
CN 200910167219 2009-08-21 2009-08-21 Pressure detection method of touch sensing element and electronic device using same CN101996014B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 200910167219 CN101996014B (en) 2009-08-21 2009-08-21 Pressure detection method of touch sensing element and electronic device using same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 200910167219 CN101996014B (en) 2009-08-21 2009-08-21 Pressure detection method of touch sensing element and electronic device using same

Publications (2)

Publication Number Publication Date
CN101996014A CN101996014A (en) 2011-03-30
CN101996014B true CN101996014B (en) 2013-08-14

Family

ID=43786231

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 200910167219 CN101996014B (en) 2009-08-21 2009-08-21 Pressure detection method of touch sensing element and electronic device using same

Country Status (1)

Country Link
CN (1) CN101996014B (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202548805U (en) * 2011-07-26 2012-11-21 比亚迪股份有限公司 Touch screen detection equipment, touch device and portable electronic equipment
JPWO2015041256A1 (en) * 2013-09-17 2017-03-02 Avcテクノロジー株式会社 Driving method for a touch panel device and a touch panel
JP6197962B2 (en) * 2014-10-07 2017-09-20 株式会社村田製作所 The touch input device and a touch input detection method
CN106598364A (en) * 2015-10-19 2017-04-26 义隆电子股份有限公司 Pressure detection method
CN107168587A (en) * 2017-07-13 2017-09-15 京东方科技集团股份有限公司 Piezoresistance detection substrate, display panel and display apparatus

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100409162C (en) * 2006-01-06 2008-08-06 凌阳科技股份有限公司 Moving sensing system and method therefor
CN101271374B (en) * 2008-05-19 2011-02-16 北京中星微电子有限公司 Method and device for detecting touch panel

Also Published As

Publication number Publication date
CN101996014A (en) 2011-03-30

Similar Documents

Publication Publication Date Title
US8482437B1 (en) Capacitance sensing matrix for keyboard architecture
CN101971125B (en) Positioning a plurality of objects on a capacitive touch pad
US8040321B2 (en) Touch-sensor with shared capacitive sensors
CN101989162B (en) Multipoint touch surface controller
EP0777888B1 (en) Object position detector
EP0777875B1 (en) Object position detector with edge motion feature
CN102460357B (en) High speed multi-touch device and a touch controller
US8169421B2 (en) Apparatus and method for detecting a touch-sensor pad gesture
CN101414236B (en) On-screen input image display system
US8913021B2 (en) Capacitance touch near-field—far field switching
CN101901074B (en) Contact detection sensor or an object close to the apparatus and its display means is mounted
CN102043511B (en) Method and device for analyzing positions
US9086768B2 (en) Mitigation of parasitic capacitance
US9569053B2 (en) Wide dynamic range capacitive sensing
CN101896825B (en) Compensation circuit for a TX-RX capacitive sensor
US8054299B2 (en) Digital controller for a true multi-point touch surface useable in a computer system
US8902173B2 (en) Pointing device using capacitance sensor
US8610686B1 (en) Apparatus and method for recognizing a tap gesture on a touch sensing device
KR101742604B1 (en) Capacitive voltage divider touch sensor
US9389724B2 (en) Touch sensitive device with stylus support
US9268441B2 (en) Active integrator for a capacitive sense array
US7804307B1 (en) Capacitance measurement systems and methods
US10019119B2 (en) Touch sensitive device with stylus support
Hwang et al. A highly area-efficient controller for capacitive touch screen panel systems
CN102576272B (en) Having a plurality of driving frequencies and multi-touch touch device of maximum likelihood estimate

Legal Events

Date Code Title Description
C06 Publication
C10 Request of examination as to substance
C14 Granted