CN105094449B - A pressure sensing input module - Google Patents

A pressure sensing input module Download PDF

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Publication number
CN105094449B
CN105094449B CN201510555223.9A CN201510555223A CN105094449B CN 105094449 B CN105094449 B CN 105094449B CN 201510555223 A CN201510555223 A CN 201510555223A CN 105094449 B CN105094449 B CN 105094449B
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pressure
pressure sensing
strain
sensing unit
direction
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CN201510555223.9A
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CN105094449A (en
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李裕文
蒋承忠
陈风
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宸鸿科技(厦门)有限公司
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    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/0416Control or interface arrangements specially adapted for digitisers
    • G06F3/0418Control or interface arrangements specially adapted for digitisers for error correction or compensation, e.g. based on parallax, calibration or alignment
    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/0414Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means using force sensing means to determine a position

Abstract

本发明提供种压力感测输入模块,其包括设置在所述基板上下表面的第压感单元及第二压感单元,所述第压感单元与所述第二压感单元对应设置且材料相同,至少第压感单元及与其对应设置的第二压感单元,与外设的两个参考电阻构成惠斯通电桥,通过调整基板与贴合层的杨氏模量及厚度,并配以第压感单元及第二压感单元的图案形状及其排布方式的调整,从而获得对温度不敏感且具有较高压力感测灵敏度的压力感测输入模块。 The present invention provides a pressure sensing input module types, comprising a first pressure sensing means disposed in the upper and lower surfaces of the substrate and the second pressure sensing means, said first pressure sensing means and the second pressure sensing means disposed corresponding to the same material, and , at least a first pressure sensitive means and its corresponding second pressure sensing unit provided with two peripheral reference resistors constituting a Wheatstone bridge, by adjusting the Young's modulus and thickness of the substrate and the bonding layer, and with the first adjusting the shape and arrangement pattern of the pressure sensing means and the way the second pressure sensing means to obtain a temperature-insensitive and has high sensitivity pressure sensing pressure sensing input module.

Description

一种压力感测输入模块【技术领域】 A pressure sensing input module FIELD

[0001] 本发明涉及压力感测领域,尤其涉及一种压力感测输入模块。 [0001] The present invention relates to pressure sensing, and in particular relates to a pressure sensing input module. 【背景技术】 【Background technique】

[0002] 随着近年来触控输入技术不断更新,平面触控面板已经成为输入设备的首选产品。 [0002] With the recent touch input technology constantly updated, flat-panel touch input has become the device of choice. 近期来,一种带来全新触控体验的压力感测装置在触控输入设备领域引发了一股热潮, 这种压力感测装置可以通过侦测按压后压力感测单元的阻值变化大小,而判定按压力度的大小,其可以单独应用于仅需侦测压力大小的触控输入设备领域,还可以与传统平面触控面板结合而兼顾二维坐标和三维触压力度的检测。 Recently to a pressure sensing device to bring a new touch experience sparked a boom in the field of touch input devices, such pressure sensing device can detect the change in resistance after the press pressure sensing unit size, and determining the size of the pressing strength, which can be applied individually to detect only the field of pressure touch input device, while taking into account the three-dimensional and two-dimensional coordinate detection of the contact pressure may also be combined with conventional flat touch panel.

[0003] 但是由于压力感测电极材料的限制,现有的材料中不可避免地会受到手指温度影响,产生一定阻值的变化,而由温度变化所带来的阻值变化极大地影响了对按压力度大小的检测,甚至还可能存在因温度产生的阻值变化远大于因按压力度大小而产生的阻值变化量,而导致压力阻值变化检测不精准甚至无法检测。 [0003] However, due to the pressure sensing electrode material, the conventional material inevitably affected by temperature fingers, generating a certain change in resistance, the resistance change caused by the temperature changes greatly influenced on detecting intensity of the size of the pressing, there may be even generated due to temperature change in resistance is much greater than the resistance change amount due to the size of the pressing strength is generated, resulting in inaccurate detection of pressure change in the resistance or even can not be detected. 【发明内容】 [SUMMARY]

[0004] 本发明中提供了一种具有温度补偿功能的压力感测输入模块。 [0004] The present invention provides a pressure sensing input module having a temperature compensation function.

[0005] 为解决上述技术问题,本发明提供技术方案:一种压力感测输入模块,其通过贴合层与各模组粘接,其包括一基板及分别设置在该基板上下表面的一第一压感层、一第二压感层,所述第一压感层包括至少一个第一压感单元,所述第二压感层包括至少一个第二压感单元,所述第一压感单元与所述第二压感单元一一对应设置且材料相同,至少一第一压感单元与其对应设置的第二压感单元构成惠斯通电桥的其中两个电阻,其用于检测一按压力度大小,同时补偿所述压力感测输入模块由于温度引起的电阻值变化;其中,所述贴合层设置在所述第一压感层、第二压感层与其他模组之间,所述贴合层的厚度为25_125μπι,所述基板的厚度为50_450μπι。 [0005] To solve the above problems, the present invention provides a technical solution: A pressure sensing input module by module with the bonding adhesive layer, which comprises a substrate and respectively disposed on a top and bottom surface of the substrate a pressure sensitive layer, a second pressure sensitive layer, the first pressure sensitive layer comprises at least a first pressure sensing means, the second pressure sensitive layer comprises at least one second pressure sensing means, said first pressure sensing means disposed one correspondence with the second pressure sensing means and the same material, the second pressure sensing means at least a first pressure sensing means disposed corresponding to a Wheatstone bridge configuration in which two resistors, for detecting a pressing the size of the intensity, while compensating the pressure sensing module due to the input resistance due to temperature change value; wherein, said adhesive layer disposed between the first pressure sensitive layer, a second layer and another pressure-sensing modules, the said bonding layer has a thickness 25_125μπι, the thickness of the substrate is 50_450μπι.

[0006] 优选地,所述压力感测输入模块进一步包括第一参考电阻和第二参考电阻,与所述至少一第一压感单元及对应设置的第二压感单元构成惠斯通电桥。 [0006] Preferably, the pressure sensing input module further comprises a first reference resistor and a second reference resistor, a second pressure sensing means and said at least one first pressure sensing means and arranged corresponding to a Wheatstone bridge configuration.

[0007] 优选地,所述构成惠斯通电桥的方式为所述第一压感单元与所述第一参考电阻串联,所述对应设置的第二压感单元与所述第二参考电阻串联。 [0007] Preferably, the Wheatstone bridge configuration of a first embodiment of the pressure sensing unit and the first reference resistor connected in series, said second set corresponding to the pressure sensing unit and the second reference resistor in series .

[0008] 优选地,所述构成惠斯通电桥的方式为所述第一压感单元与所述对应设置的第二压感单元串联,所述第一参考电阻与所述第二参考电阻串联。 [0008] Preferably, the Wheatstone bridge configuration of a first embodiment of the pressure sensing means disposed corresponding to the second pressure sensing means connected in series, the first reference resistor and the second reference resistor in series .

[0009] 优选地,所述第一压感单元阵列设置于所述基板上表面,所述第二压感单元与所述第一压感单元对应设置于所述基板下表面,则所述压力感测输入模块可同时检测三维信号。 [0009] Preferably, the first pressure sensing cell array disposed on said substrate surface, said second pressure sensing unit and the first pressure sensing means disposed corresponding to the lower surface of said substrate, said pressure sensing input module can simultaneously detect three-dimensional signal.

[0010] 优选地,所述第一压感单元与所述第二压感单元均由一压阻材料以一导线的形式弯折而成。 [0010] Preferably, the first pressure sensing unit and the second unit by a pressure sensing piezoresistive material formed in the form of a bent wire.

[0011] 优选地,所述第一压感单元与所述第二压感单元的形状为非旋转对称性图形。 [0011] Preferably, the first pressure sensing means and the shape of the second pressure sensing means is a non-rotationally symmetrical pattern.

[0012] 优选地,所述第一压感单元和/或所述第二压感单元的图案设计为朝一方向的导线总长度最大,该方向为所述第一压感单元和/或所述第二压感单元的a方向,所述第一压感单元与所述第二压感单元的图案朝一方向的导线总长度最小,该方向为b方向,其中,所述a方向与所述b方向垂直。 [0012] Preferably, the pattern and / or the second pressure sensing means sensing the first pressure unit designed for the maximum total length of wire in one direction, the direction of the first pressure sensing means and / or said a second sensing unit pressing direction, and the pattern of the second pressure sensing means sensing said first pressure means in one direction of the minimum total length of the wire, the direction is a direction b, wherein a direction of the b the vertical direction.

[0013] 优选地,所述第一压感单元与所述第二压感单元的图案形状包括椭圆绕线状、折线状、曲线状、等长多段串联线状、不等长多段串联线状或回字型线状的其中一种或其组合。 Pattern shape [0013] Preferably, the first pressure sensing unit and the second pressure sensing means comprises a wire-shaped oval, polygonal line, a curved shape, length and other multistage series linear, unequal multistage series linear or a combination thereof, or wherein the linear shaped return.

[0014] 优选地,所述第一压感单元与所述对应设置的第二压感单元的形状不相同。 [0014] Preferably, the shape of the first pressure sensing means disposed corresponding to the second pressure sensing means are not the same.

[0015] 与现有技术相比,本发明所提供的压力感测输入模块或压力感测输入装置至少具有如下的优点: [0015] Compared with the prior art, the present invention provides a pressure sensing input module or input pressure sensing means having at least the following advantages:

[0016] 1、本发明提供了一种具有温度补偿功能的压力感测输入模块,其包括设置在基板上下表面的第一压感单元及第二压感单元,第一压感单元与第二压感单元对应设置且材料相同,至少一第一压感单元及与其对应设置的第二压感单元,与外设的两个参考电阻(电阻Ra与电阻Rb)构成惠斯通电桥。 [0016] 1, the present invention provides a pressure sensing input module having a temperature compensation function, comprising a first pressure sensing means disposed in the second pressure sensing means and the upper and lower surfaces of the substrate, the first and second pressure sensing means and pressure sensing means disposed corresponding to the same material, at least a first pressure sensing means and the corresponding second pressure sensing unit provided with two peripheral reference resistor (resistor Ra and the resistor Rb) constituting the Wheatstone bridge.

[0017] 本发明中采用惠斯通电桥对按压力值进行检测,其电路结构简单,控制精度高。 [0017] The present invention is employed in a Wheatstone bridge to detect the pressing force value, a simple circuit structure, high control precision. 由于构成第一压感单元及第二压感单元的材料相同,因此,第一压感单元及第二压感单元的由于温度变化所带来的电阻值的变化满足(RF0+△ RFO) ARCO+△ RCO) =RF0/RC0,可见,由于第一压感单元及第二压感单元为同种材料且共同构成惠斯通电桥,在电阻值的测量过程中,温度对第一压感单元及第二压感单元的电阻值影响可以忽略,因此本发明所提供的压力感测输入模块可以完全补偿由于温度引起的电阻值变化。 Since the pressure-sensing unit constituting the first and the second pressure-sensing cells in the same material, therefore, the first pressure sensing means and the second pressure sensing means due to variations in the resistance value of the temperature changes satisfies brought (RF0 + △ RFO) ARCO + △ RCO) = RF0 / RC0, visible, since the first pressure sensing means and the second pressure sensing means is of the same material and constitute a Wheatstone bridge, the resistance value during the measurement, the temperature of the first and second pressure sensing means affect the resistance value of two pressure sensing elements can be ignored, the pressure sensing input module of the present invention may be provided fully compensate temperature induced resistance change due.

[0018] 2、本发明所提供的压力感测输入装置中,基板及贴合层的杨氏模量、厚度影响压力感测输入装置的中性面,当中性面位于基板中时,设置在基板上下主表面的第一压感单元与第二压感单元之间的应变差可以达到最大值。 When the [0018] 2, the pressure sensing input device provided in the present invention, the substrate and a Young's modulus of the adhesive layer, the thickness of the influence of the pressure sensing means input neutral plane, the neutral plane of the substrate, the disposed strain sensing the pressure difference between the first major surface of the substrate unit and the second upper and lower pressure sensitive unit may reach a maximum value. 因此,将基板的杨氏模量设置为大于贴合层的杨氏模量至少一个数量级前提下:(1)将贴合层的杨氏模量控制在0_3000MPa的范围内有利于增大上述应变差△ ε ; (2)将贴合层的厚度限定在25_125μπι范围内时,应变差△ ε将随着贴合层的厚度的减小而呈增大趋势;(3)将基板的厚度限定在50-450μπι范围内时,应变差A ε将随着基板厚度的增大而呈增大趋势。 Thus, the Young's modulus of the substrate is set to be larger than the Young's modulus of the adhesive layer is at least one order of magnitude under the conditions: (1) Young's modulus of the bonding layer is controlled within a range conducive to increasing the 0_3000MPa the strain difference △ ε; (2) the bonding layer has a thickness within the defined range 25_125μπι, the strain difference △ ε attached decrease as the thickness of the seal layer tended to increase; (3) defined in the thickness of the substrate when the range 50-450μπι, the difference in strain a ε with increasing thickness of the substrate tended to increase. 因此,通过调整压力感测输入装置的基板及贴合层的杨氏模量及其厚度,即可增大基板上下表面的压感单元的应变差异,从而使压力大小检测更加精准,按压力度检测更加灵敏。 Therefore, by adjusting the pressure sensing substrate and the Young's modulus of the adhesive layer and the thickness measurement of the input device, to increase the pressure differential strain sensing unit of the upper and lower surfaces of the substrate, so that more accurate detection of pressure, pressing strength detected more sensitive.

[0019] 3、本发明所提供的压力感测输入模块中,第一压感单元与第二压感单元为具有长轴方向和短轴方向,且长轴方向的总线长大于短轴方向的总线长的图案设计。 [0019] 3, a pressure sensing input module of the present invention provides in a first and second pressure sensing means is a pressure sensing means having a major axis and a minor axis direction and major axis direction of the bus is longer than the minor axis direction long bus designs. 在本发明中还进一步对第一压感单元与第二压感单元的图案形状包括椭圆绕线状、折线状、曲线状、等长多段串联线状、不等长多段串联线状、回字型线状等形状的一种或其组合。 In the present invention, further to the shape of the first pattern unit and the second pressure sensing means comprises a pressure sensing winding elliptical shape, a polygonal line, a curved shape, length and other multistage series linear, unequal multistage linear series, back to the word type linear shape or the like or a combination thereof. 当手指按压(点按压)引起第一压感单元或第二压感单元产生形变时,第一压感单元或第二压感单元由于a方向的总长度与b方向的总长度不同,其a方向与b方向的应变也不同,因此可以有效增大电阻值变化效果,进一步使使第一压感层或第二压感层对压力的响应更精准更灵敏。 When the finger is pressed (the pressing point) causes the first pressure-sensing unit or the second pressure sensing means is deformed, the first pressure or the second pressure sensing means sensing unit since the total length of the total length b and a direction different from a direction that a strain direction different from the direction b, it is possible to effectively increase the effect of change in resistance value, the first further layer of pressure sensitive or responsive to a second pressure sensitive layer is more accurate and more sensitive to pressure.

[0020] 4、本发明所提供的压力感测输入模块中,为了达到上述第一压感单元的应变与第二压感单元的应变之间的差值可以达到较大值,从而提高压力感测输入模块的压力侦测灵敏度,除了通过调整第一压感单元及第二压感单元的图案形状,还可以通过调整第一压感单元及第二压感单元的排布方式,从而增大或减小第一压感单元及第二压感单元的应变量。 [0020] 4, a pressure sensing input module of the present invention is provided in order to achieve the first pressure-sensing strain cell and a second pressure difference between the strain sensing unit may reach a larger value, thereby increasing the pressure sensing pressure sensing module input detection sensitivity, in addition to the pattern by adjusting the shape of the first pressure sensing means and the second pressure sensing means may also be adjusted by arranging the first pressure-sensing means and the second pressure sensing means, thereby increasing or decreasing the strain sensing unit is a first pressure and the second pressure sensing means. 其中,当第一压感单元及第二压感单元的应变为一正一负时,角度al与角度a2的角度范围为0°-45°,当应变同为负应变时,角度al为0°-45°,而角度a2为45°-90°,或当应变同为正应变时,角度al为45°-90°,而角度a2为0°-45°。 Wherein, when the strain first pressure sensing means and the second pressure sensing means is a positive and negative, angle and angular range of angles al and a2 is 0 ° -45 °, a negative strain when the strain is the same, the angle al is 0 when ° -45 °, while the angle a2 is 45 ° -90 °, or normal strain when the strain is the same, the angle al is 45 ° -90 °, while the angle a2 is 0 ° -45 °. 此外,为了使第一压感单元及第二压感单元之间的应变差A ε较大,还可通过对第一压感单元及第二压感单元的图案形状关系进行了限定。 Further, in order to make the first pressure and the second pressure sensing means sensing a difference in strain between the units A ε is large, the shape may be defined by a relationship between the first unit and the second pressure sensing means sensing the pressure pattern. 上述条件的限制都可使第一压感单元及第二压感单元的应变变化值最大。 The above conditions may limit the strain variation value of the first pressure sensing means and the second pressure sensing unit maximum. 第一压感单元在受到按压作用力之后,在朝a方向上的应变量大于朝b方向上的应变量,如此,有利于施加在第一压感单元及第二压感单元上的按压力所产生的应变可以集中在一个方向上体现,当这个应变集中的方向与该区域由于按压作用力而产生的最大应变方向一致时,可以使第一压感单元及第二压感单元的应变差A ε更加,从而更精准地体现按压力度的大小、提高压力侦测的灵敏度。 A first pressure sensing means is pressed after a force, toward a strain in the direction is larger than the strain in the direction of B, thus, it facilitates the application of the first pressure sensing means and the second pressure sensing unit pressing force the resulting strain can be concentrated on a reflected direction, when the concentration of strain in the direction coincides with the direction of maximum strain in the region of the pressing force is generated, the strain may be a first and a second pressure sensing means sensing the pressure difference between the unit a ε is more, thereby more accurately reflect the size of the pressing strength, increasing the pressure detection sensitivity.

[0021] 5、本发明中压力感测输入模块中采用电阻式压力感测,其通过压感单元内部的形状改变引起相应的阻值变化,从而根据阻值变化产生的位置和变化量的大小来判断按压点位置和按压力量大小,利用同一压感单元既进行位置检测(平面二维)又进行力量检测(第三维度)的计算,实现三维度的同时检测。 [0021] 5, the present invention, the pressure sensing module input pressure sensing a resistance which changes by a change in resistance causes a corresponding shape of the internal pressure sensing means, whereby the position and the size change amount of the resistance change is generated in accordance with to determine the pressing position and the pressing force level, both by the same pressure sensitive means for detecting the position (two-dimensional plane) and for detecting the power (the third dimension) is calculated, the simultaneous detection of three-dimensional. 【附图说明】 BRIEF DESCRIPTION

[0022] 图IA是本发明第一实施例压力感测输入模块中的层状结构示意图。 [0022] FIG IA is a schematic view of a layered configuration example of a pressure sensing input module first embodiment of the present invention.

[0023] 图IB是图IA中压力信号侦测原理图。 [0023] FIG IB is a diagram illustrating the principle of detecting a pressure signal IA in FIG.

[0024] 图IC是图IA中另一压力信号侦测原理图。 [0024] FIG IA is a diagram illustrating another IC pressure signal detected diagram.

[0025] 图2Α是本发明第二实施例压力感测输入模块的层状结构示意图。 [0025] FIG 2Α is a schematic view a second embodiment of a layered pressure sensing input module of the invention.

[0026] 图2Β是图2Α中所示压力感测输入模块受到按压力后变形的结构示意图。 [0026] FIG 2Β is shown in FIG pressure sensing structure diagram of the input module by the pressing force after deformation 2Α.

[0027] 图2C是图2Β中所示压力感测输入模块受到按压力后的各层应变量的走势图。 [0027] As shown in FIG. 2C is a pressure sensing input module for each layer by Chart strain of the pressure 2Β.

[0028] 图3Α是本发明第二实施例中第一压感单元与第二压感单元的应变差与贴合层的杨氏模量的关系示意图。 [0028] FIG 3Α is a schematic view of a second embodiment of the present invention, the relationship between the first sensing unit and the pressure difference between the strain and the modulus of Young of the second adhesive layer pressure sensitive unit.

[0029] 图3Β是本发明第二实施例中第一压感单元与第二压感单元的应变差与贴合层的杨氏模量的另一关系示意图。 [0029] FIG 3Β is another schematic view of a second embodiment of the present invention, the relationship between the first sensing unit and the pressure difference between the strain and the modulus of Young of the second adhesive layer pressure sensitive unit.

[0030] 图3C是本发明第二实施例中第一压感单元与第二压感单元的应变差与贴合层的厚度的关系不意图。 [0030] FIG 3C is a second embodiment of the present invention, a first differential pressure sensing unit strain relationship with the thickness of the second adhesive layer and the pressure sensitive unit is not intended.

[0031] 图3D是本发明第二实施例中第一压感单元与第二压感单元的应变差与基板的厚度的关系不意图。 [0031] FIG 3D is a difference in the relationship between the strain and the thickness of the substrate of the second embodiment of the present invention in a first embodiment of the pressure sensing unit and the second pressure sensing unit is not intended.

[0032] 图4是本发明第四实施例压力感测输入模块的第一压感层的平面结构示意图。 [0032] FIG. 4 is a schematic planar structure of the present invention the pressure sensing input of the first module of the fourth embodiment of the pressure sensitive layer.

[0033] 图5Α是本发明第四实施例压力感测输入模块的第一压感层及其按压区域的平面示意图。 [0033] FIG 5Α is a plan view of the first embodiment of the pressure sensing layer pressure sensing input module of a fourth embodiment of the present invention and the pressing region.

[0034] 图5Β-5Ε是图5Α中AD处按压区域的应变示意图。 [0034] FIG 5Β-5Ε strain is a schematic drawing area AD of the 5Α pressed.

[0035] 图6Α是图4中单个第一压感单元的平面结构示意图。 [0035] FIG 6Α is a schematic view of a first planar structures single pressure sensing element 4 in FIG.

[0036] 图6Β是图6Α中的第一压感单元的a方向与b方向的长度及长轴方向的示意图。 [0036] FIG 6Β is a schematic longitudinal direction and a longitudinal direction of the b direction in FIG 6Α first pressure sensing unit.

[0037] 图6C-6G是图4中单个第一压感单元的的变形实施例结构示意图。 [0037] FIGS. 6C-6G are schematic structural modification of the first single pressure sensing unit of FIG. 4 embodiment.

[0038] 图7A是本发明第五实施例压力感测输入模块中第一压感层、基板、第二压感层的剖面结构示意图。 [0038] FIG. 7A is a first pressure sensitive layer, the substrate, a schematic cross-sectional structure of the second layer of pressure sensitive fifth embodiment of a pressure sensing input module of the present invention.

[0039] 图7B是图7A中所示结构的应变-厚度关系图。 [0039] FIG 7A FIG 7B is a strained structure shown - Thickness in FIG.

[0040] 图8A是图6A所示压力感测输入模块的第一压感单元的长轴方向示意图。 [0040] FIG. 8A is a schematic view of a major axis direction of the first pressure sensing means sensing a pressure input module shown in FIG. 6A.

[0041] 图8B是与图8A中所示第一压感单元对应设置的第二压感单元的长轴方向示意图。 [0041] FIG 8B is a schematic view of a major axis direction of the second pressure sensing means and the first pressure sensing unit disposed corresponding to FIG 8A. 【具体实施方式】 【Detailed ways】

[0042] 为了使本发明的目的,技术方案及优点更加清楚明白,以下结合附图及实施实例, 对本发明进行进一步详细说明。 [0042] To make the objectives, technical solutions and advantages of the present invention will become more apparent, the following embodiments in conjunction with the accompanying drawings and examples, the present invention will be further described in detail. 应当理解,此处所描述的具体实施例仅仅用以解释本发明, 并不用于限定本发明。 It should be understood that the specific embodiments described herein are only intended to illustrate the present invention and are not intended to limit the present invention.

[0043] 请参阅图IA,本发明第一实施例中提供一压力感测输入模块10,其包括一基板11 及分别位于基板11上下(本发明中,上下位置词仅用于限定指定视图上的相对位置)表面的第一压感层12与第二压感层13。 [0043] Referring to FIG IA, a first embodiment of the present invention to provide a pressure sensing input module 10, which comprises a substrate and the upper and lower substrate 11 are positioned (in the present invention, the vertical position of the defining word to specify only the view 11 relative position) of the first surface of the pressure sensitive layer 12 and the second layer 13 of pressure sensitive. 第一压感层12上设置有至少一个第一压感单元121,第二压感层13上设置有至少一个第二压感单元131,至少一个第一压感单元121与至少一个第二压感单元131为一一对应设置,其中,本发明中的一一对应是指各第一压感单元121及各第二压感单元131在基板11上下表面的数量及分布位置上的一一对应,而各第一压感单元121及各第二压感单元131的图案形状则不受限制。 A first pressure sensitive layer 12 having at least a first pressure sensitive unit 121, is provided on the second pressure-sensitive layer 13 has at least one second pressure sensing unit 131, at least one first pressure-sensing unit 121 and at least a second pressure one correspondence sensing unit 131 is provided, wherein, in the present invention refers to a one to one each of the first pressure-sensing unit 121 and each of the second pressure sensing unit 131 correspond in number 11, and the upper and lower surface of the substrate on the distribution of positions and each of the first pressure-sensing unit 121 and each of the second pressure sensing unit 131 is a pattern shape is not limited. 当基板11受到按压时,该按压点处对应的至少一个第一压感单元121与至少一个第二压感单元131将受到压力。 When the substrate 11 is pressed, the corresponding point at which the at least one first pressing unit 121 and the pressure sensing at least one second pressure-sensing unit 131 under pressure.

[0044] 第一压感单元121和第二压感单元131,因受按压而引起变形、偏转或剪切等应变性反应,从而导致至少一个电性能发生改变,特别的,当第一压感单元121与第二压感单元131均由一压阻材料以一导线的形式弯折而成,当按压后致使相应区域的第一压感单元121 和第二压感单元131的导线长度发生变化,进而影响第一压感单元121与第二压感单元131 的阻值。 [0044] The first pressure-sensing unit 121 and the second pressure sensing unit 131, and the like due to deformation caused by pressing, shear strain or deflection response, thereby causing the at least one electrical properties changed, especially when the first pressure sensitive unit 121 and the second pressure sensing unit 131 formed by a piezoresistive material in the form of a bent wire, when pressed causes the first pressure-sensing unit 121 and a second region corresponding to the pressure sensing unit 131 changes the length of the wire , thereby affecting the resistance value of the first pressure-sensing unit 121 and the second pressure sensing unit 131.

[0045] 第一压感单元121与第二压感单元131的材料包括如银、铜、错、金等金属及其合金,或氧化铟锡(Indium Tin 0xide,IT0)、氧化锡铺(Antimony Doped Tin Oxid e,AT0)、 氧化铟锌(Indium Zinc 0xide,IZ0)、氧化锌错(Aluminum Zinc 0xide,AZ0)等类似金属氧化物,或石墨烯、金属网格、纳米银线或碳纳米管等中的一种或多种。 Materials [0045] The first pressure-sensing unit 121 and the second sensing unit 131 includes a pressure such as silver, copper, wrong, gold and other metals and alloys, or indium tin oxide (Indium Tin 0xide, IT0), tin oxide shop (Antimony doped Tin Oxid e, AT0), indium zinc oxide (indium zinc 0xide, IZ0), zinc oxide wrong (Aluminum zinc 0xide, AZ0) and the like metal oxide, or graphene, meshes, silver nanowires or carbon nanotubes one or more of the like.

[0046] 基板11可包括但不受限于:刚性基板,如玻璃,强化玻璃,蓝宝石玻璃等;也可以是柔性基板,如PEEK (polyetheretherketone,聚醚醚酮)、PI (Polyimide,聚酰亚胺)、PET (polyethylene terephthalate,聚对苯二甲酸乙二醇酯)、PC (polycarbonate,聚碳酸酯聚碳酸酯)、PES (polyethylene glycol succinate,聚丁二酸乙二醇酯)、PMMA (polymethylmethacrylate,聚甲基丙稀酸甲酯)、PVC (Polyvinyl chloride,聚氯乙稀)、PP (Polypropylene,聚丙稀)及其任意两者的复合物等材料。 [0046] The substrate 11 may include, but are not limited to: a rigid substrate, such as glass, tempered glass, sapphire glass and the like; may be a flexible substrate, such as PEEK (polyetheretherketone, polyether ether ketone), PI (Polyimide, polyimide amine), PET (polyethylene terephthalate, polyethylene terephthalate), PC (polycarbonate, polycarbonate polycarbonate), PES (polyethylene glycol succinate, polyethylene succinate), PMMA (polymethylmethacrylate material, polymethylmethacrylate), PVC (Polyvinyl chloride, polyvinyl chloride), PP (polypropylene, polypropylene) and a composite of any two.

[0047] 本发明第一实施例提供的压力感测输入模块10中各第一压感单元121对应的内阻为RF0,RF1,RF2......RFn,当接受按压力时,各第一压感单元121所对应的内阻RF0, RF1,RF2......RFn阻值会发生变化;压力感测输入模块10中各第二压感单元131对应的内阻为RC0,RC1,RC2......1?〇1,其分别与1^0,1^1,1^2......RFn——对应设置在基板11两侧,当接受按压力时,各第二压感单元131所对应的内阻RCO,RC1, RC2......RCn阻值也会发生变化。 [0047] Pressure sensing input module 10 provided in each of the first pressure-sensing unit 121 corresponding to the internal resistance of a first embodiment of the present invention is RF0, RF1, RF2 ...... RFn, when receiving the pressing force, each a first pressure-sensing unit 121 corresponding to the internal resistance RF0, RF1, RF2 ...... RFn resistance vary; 131 corresponding to the internal resistance of the pressure sensing input of each module 10 is a second pressure sensing means RC0, RC1, RC2 ...... 1? 〇1 respectively with 1 ^ 0,1 ^ 1,1 ^ 2 ...... RFn-- disposed corresponding to both sides of the substrate 11, when receiving the pressing force , each of the second pressure-sensing unit 131 corresponding to the internal resistance RCO, RC1, RC2 ...... RCn resistance also changes. 其中,各第一压感单元121及各第二压感单元131 一一对应设置表示为在基板11上下表面的数量及分布位置上的一一对应,而各第一压感单元121及各第二压感单元131的图案形状则不受限制。 Wherein each of the first pressure-sensing unit 121 and each of the second pressure-sensing unit 131 is provided one-to-one correspondence to the number 11 indicates the upper and lower surfaces of the substrate and the distribution of positions, and each of the first pressure-sensing unit 121 and each of the pattern shape of two pressure-sensing unit 131 is not restricted.

[0048] 在本发明中,第一压感单元121导线的两端分别电性连接至一信号处理中心(图未示),第二压感单元131导线的两端分别电性连接至相同的信号处理中心(图未示),该信号处理中心进一步包括第一参考电阻Ra、第二参考电阻Rb及一多路复用器。 [0048] In the present invention, the first ends of the wires 121 are pressure-sensing unit is electrically connected to a central signal processing (not shown), the wire ends 131 of the second pressure sensing means are electrically connected to the same signal processing center (not shown), which further comprises a first signal processing center reference resistor Ra, Rb and a second reference resistance multiplexer. 通过多路复用器的控制,依序使各第一压感单元121电阻RFn (其中,n = 0,1,2···η)、与之对应设置的第二压感单元电阻131RCn (其中,n = 0,1,2···η)与电阻Ra、电阻Rb构成惠斯通电桥。 By controlling the multiplexer, sequentially each of the first pressure-sensing resistor unit 121 RFn (where, n = 0,1,2 ··· η), a second pressure-sensing resistor means disposed corresponding 131RCn ( where, n = 0,1,2 ··· η) and the resistance Ra, Rb resistors constituting a Wheatstone bridge.

[0049] 如图IB与图IC所示,电阻RFn、电阻RCn、第一参考电阻Ra、第二参考电阻Rb的连接方式可以有两种。 [0049] As shown in FIG IB and IC, the resistance RFn, RCn resistance, a first reference resistor Ra, a second reference resistor Rb is connected in two ways. 如图IB所示,电阻RFn的一端电性连接于一电源正极端VEX+,另一端与第一参考电阻Ra串联;电阻RCn的一端电性连接于同样的电源正极端VEX+,另一端与第二参考电阻Rb串联;第一参考电阻Ra、第二参考电阻Rb另一端电性连接于该电源负极端VEX-(或接地),一电压计用于测量电阻RFn、电阻RCn的电势差信号U0。 As shown in FIG IB, one end of the resistor is connected to RFn a positive power supply terminal VEX +, and the other end of the first reference resistor Ra in series; RCn end of the resistor connected to the same positive power supply terminal VEX +, and the other end of the second reference resistor Rb connected in series; a first reference resistor Ra, and the other end is electrically connected to the second reference resistor Rb to the negative power supply terminal VEX- (or ground), a voltage meter for measuring the potential difference signal U0 RFn resistance, resistance to RCn. 或如图IC所示,电阻RFn的一端电性连接于一电源正极端VEX+,另一端与电阻RCn串联;第一参考电阻Ra的一端电性连接于同样的电源正极端VEX+,另一端与第二参考电阻Rb串联;电阻RCn、第二参考电阻Rb的另一端电性连接于该电源负极端VEX-(或接地)一电压计用于测量电阻RFn、第一参考电阻Ra的电势差信号U0。 Or as shown in FIG IC, one end of the resistor is connected to RFn a positive power supply terminal VEX +, and the other end in series with the resistor RCn; One end of the first reference resistor Ra is connected to the same positive power supply terminal VEX +, and the other end of the first second reference resistor Rb connected in series; resistance RCn, the other terminal of the second reference resistance Rb is connected to the negative power supply terminal VEX- (or ground) voltage is used to measure a resistance RFn, a potential difference signal U0 of the first reference resistor Ra.

[0050] 在无按压力作用时,各惠斯通电桥处于平衡状态。 [0050] In the absence of the pressing force, each of the Wheatstone bridge is in equilibrium. 当受到按压力作用时,对应位置处的一个或多个第一压感单元121和对应设置的第二压感单元131阻值改变,惠斯通电桥平衡被打破而导致输出电势差信号UO必定发生变化,不同的压力对应不同阻值的改变,相应也会产生不同的电势差信号,故,通过对惠斯通电桥的电势差信号UO进行计算及处理即可以得出相应的压力值。 When subjected to pressing force, the second pressure-sensing unit 131 changes the resistance of one or more first pressure sensing unit 121 at the corresponding positions and the corresponding set Wheatstone bridge balance is disturbed resulting in a potential difference output signal must occur UO changes, corresponding to different pressure changes of different resistance, also have respective different potential difference signal, therefore, by the potential difference signal UO Wheatstone bridge is calculated and process which can draw the appropriate pressure value.

[0051] 如图IB中所示,电阻RFO、电阻RCO、电阻Ra与电阻Rb阻构成惠斯通电桥,其关系可表示为: [0051] As shown in FIG IB, the resistance of the RFO, the RCO resistor, the resistor Ra and resistor Rb resistive Wheatstone bridge, which relationship may be expressed as:

Figure CN105094449BD00071

[0053] 如图IC中所示,电阻RFO、电阻RCO、电阻Ra与电阻Rb阻构成惠斯通电桥,其关系可表示为: [0053] As shown in FIG IC, the resistance of the RFO, the RCO resistor, the resistor Ra and resistor Rb resistive Wheatstone bridge, which relationship may be expressed as:

Figure CN105094449BD00072

[0055] 本发明第一实施例中压力感测输入模块中,电阻与温度变化的关系可通过如下公式推导得到:物体的电阻R的计算公式为: [0055] In a first embodiment of the present invention, a pressure sensing input module, changes the relationship between resistance and temperature can be derived by the following equation: resistance R of the object is calculated as:

[0056] R=pL/S (1); [0056] R = pL / S (1);

[0057] 其中,P表示为组成第一压感单元121、第二压感单元131的材料的电阻率,L为本发明中第一压感单元121、第二压感单元131的长度,S为第一压感单元121、第二压感单元131 电流方向的横截面积。 [0057] wherein, P represents a first composition as a pressure sensitive unit 121, the resistivity of the material of the second pressure sensing unit 131, L of the present invention, the first pressure-sensing unit 121, a length of the second pressure sensing unit 131, S a first pressure sensing unit 121, the cross sectional area of ​​the second pressure-sensing unit 131 of the current direction.

[0058] 本发明中组成第一压感单元121、第二压感单元131的材料的电阻率P随温度变化的公式为: [0058] The composition of the present invention, the first pressure-sensing unit 121, temperature-dependent resistivity of the material of second pressure-sensing unit 131 P formula:

[0059] Pt=P (1+αΤ) (2); [0059] Pt = P (1 + αΤ) (2);

[0060] 其中,P为组成第一压感单元121、第二压感单元131的材料的电阻率,α为电阻的温度系数,T为温度。 [0060] wherein, P is composed of a first pressure-sensing unit 121, the resistivity of the material of the second pressure sensing unit 131, [alpha] is the temperature coefficient of resistance, T is the temperature.

[0061] 结合上述式⑴与式⑵: [0061] The combination of the above formula and the formula ⑴ ⑵:

[0062] 当环境温度为To时(如T = O)时,物体的电阻值为: [0062] When the resistance value when the ambient temperature is To (e.g., T = O), the object:

[0063] RT〇= pL/S (3); [0063] RT〇 = pL / S (3);

[0064] 当环境温度为1\时,物体的电阻值为: [0064] When the ambient temperature of a \, the resistance value of the object:

[0065] RT1 = PL/S (l+α (Ti-To)) ⑷; [0065] RT1 = PL / S (l + α (Ti-To)) ⑷;

[0066] 由上述的式(I)-式(4)可以推导出材料电阻值受温度影响的△ Rt可表示为如下式(5): [0066] by the aforementioned formula (I) - Formula (4) may be derived △ Rt materials affected by temperature resistance value can be expressed as the following formula (5):

Figure CN105094449BD00081

[0071] 其中,△ T表示温度变化量。 [0071] where, △ T represents the temperature change.

[0072] 本发明第一实施例所提供的压力感测输入模块10中,惠斯通电桥中RFO、RCO、Ra与Rb的关系表示如上述式(Φ及式(P)所示。 [0072] Pressure sensing input module according to a first embodiment provided by the present invention 10, the Wheatstone bridge RFO, RCO, the relationship between Ra and Rb as represented by the formula ([Phi] and Formula (P) shown in FIG.

[0073] 以式(Φ为例,当温度变化(温度变化量表示为Δ T)时,第一压感单元121与其位置对应设置的第二压感单元131的电阻变化量分别如式(6)及式(7)中所示: [0073] In the formula ([Phi], for example, when the resistance change amount of the second pressure sensing unit temperature change (temperature variation is represented as Δ T), a first pressure-sensing unit 121 provided thereto corresponding to positions 131, respectively of formula (6 ) and (7) shown in:

[0074] A RFO = Δ Τα X RFO (6); [0074] A RFO = Δ Τα X RFO (6);

[0075] ARCO= ATaXRCO (7); [0075] ARCO = ATaXRCO (7);

[0076] 由上述式(1)-式(8),可以得出第一压感单元121与其位置对应设置的第二压感单元131的电阻变化表示如式(8)所示: [0076] by the above formula (1) - shown in the formula (8), the resistance change can be obtained a second pressure sensing unit of the first pressure-sensing unit 121 provided thereto position corresponding to 131 as represented by the formula (8):

Figure CN105094449BD00082

[0078]由式⑶可以看出,第一压感单元121与第二压感单元131由同种材料构成,在相同的温度变化量,式⑶还可进一步得出式(9): [0078] ⑶ can be seen from the formula, the first pressure-sensing unit 121 of the second pressure-sensing unit 131 is constituted by the same material, the same amount of change in temperature, can be further derived formula ⑶ formula (9):

Figure CN105094449BD00083

[0080] 从上述式⑶可以看出,根据温度传导的特性来看,相同材料在相同的温度变化量AT的影响下,其温度系数a是相同的,当第一压感单元121与第二压感单元131采用相同的材料,在电阻值测量的过程中,温度对第一压感单元121及第二压感单元131电阻值的变化量Δ RFO与△ RCO可通过式⑶中所示的方式相互抵消,因此,温度对压力感测输入模块10的影响为零。 [0080] As can be seen from the above formula ⑶, the characteristics of temperature conductivity of view, the same material under the influence of the temperature change AT the same, which is a temperature coefficient of the same, when the first pressure-sensing unit 121 and the second the pressure sensing unit 131 using the same material, the resistance values ​​measured in the process, the temperature variation of the resistance value of the first 131 pressure sensing unit 121 and the second pressure sensing means and Δ RFO △ RCO be shown by the formula ⑶ cancel each other, and therefore, the effect of temperature on the pressure sensing module 10 is input to zero.

[0081] 以式(P)为例,其与式(Φ在温度变化量为△ T时的区别在于: [0081] In the formula (P) as an example, with the formula ([Phi] is the amount of change in the temperature difference △ T is the time that:

Figure CN105094449BD00084

[0082] 其中,式(10)的具体推导过程与式⑶及式(9)相同,故,在此不再赘述。 DETAILED derivation [0082] wherein formula (10) and the formula ⑶ formula (9) the same, therefore, are not repeated here.

[0083] 从上述式(9)与式(10)的结果可知,图IB与图IC中所示的惠斯通电桥结构均使温度对第一压感单元121及与其对应设置的第二压感单元131的电阻值影响为零,从而实现完全温度补偿。 [0083] From the results of the above-described formula (9) and (10), and FIG. IB Wheatstone bridge configuration shown in FIG IC and the second pressure are the temperature of the first pressure-sensing unit 121 and its corresponding set of Effect of value zero resistance sensing unit 131, in order to achieve temperature compensation.

[0084] 此外,根据力传导的特性来看,由于第一压感单元121和第二压感单元131分设在基板11的上下表面,由于基板11具有一定厚度,因此,基板11在受到按压作用力后其上下层会有形变差异,进而使设置在其上下表面的第一压感单元121与第二压感单元131之间也会产生形变差异。 [0084] Further, according to the characteristics of the force transmitting point of view, since the first pressure-sensing unit 121 and the second pressure sensing unit 131 is divided into upper and lower surfaces of the substrate 11, the substrate 11 having a certain thickness, and therefore, the substrate 11 is subjected to pressing action after the deformation force which will lower the difference, and further provided that the deformation will produce a difference between a first pressure-sensing unit 121 and the second upper and lower surfaces of the pressure sensing unit 131. 进一步地,不同的按压力道,其所引起基板11的上下层及第一压感单元121 与第二压感单元131的形变差异也不相同。 Further, the pressing force of the different channels, it causes the underlying substrate 11 and a first pressure difference sensing unit 121 and the second pressure deformation sensing unit 131 is not the same.

[0085] 当在无按压力作用时,图IB与图IC中所示的惠斯通电桥处于平衡状态。 [0085] When no pressing force, and FIG. IB Wheatstone bridge shown in FIG IC in equilibrium. 当受到按压力作用时,第一压感单元121和/或第二压感单元131的一个或多个阻值改变,这样,惠斯通电桥平衡被打破而导致输出电信号UO必定发生变化:如触压的力道较大,则第一压感单元121与第二压感单元131阻值具有较大的变化量;相反地,如果触压的力道较小,则第一压感单元121与第二压感单元131的阻值具有较小的变化量。 When subjected to pressing force, a first pressure-sensing unit 121 and / or the second pressure sensing unit 131 or a plurality of resistance changes, so that the Wheatstone bridge balance is disturbed resulting in output electrical signals must vary UO: the strength of the large contact pressure, the first pressure-sensing unit 121 having a large amount of change in the pressure sensing unit 131 and the second resistance; conversely, if the force of contact pressure is small, then the first sensing unit 121 and the pressure the second pressure sensing unit 131 has a smaller resistance value variation amount. 不同阻值的改变对应着不同的压力值,故,通过对惠斯通电桥的输出信号UO进行计算及处理,即可以得出相应的压力值。 Changing different resistance values ​​corresponding to different pressures, so that, by the output signals UO Wheatstone bridge is calculated and processed, i.e., the corresponding pressure value can be derived.

[0086] 在本发明中,当各第一压感单元121和各第二压感单元131是呈阵列设置于基板11 上下表面时,压力感测输入模块可并不仅限于检测按压力量的大小,还可以用于同步检测按压位置(平面二维)与按压力量(第三维度)这三维度的信号。 When [0086] In the present invention, when each of the first pressure-sensing unit 121 and each of the second pressure-sensing unit 131 is disposed in an array on the upper and lower surfaces of the substrate 11, the pressure sensing module may be input is not limited to the size of the pressing force detected, it may also be a signal for synchronous detection of the three-dimensional position of the pressing (two-dimensional plane) and the pressing force (the third dimension). 按压后,第一压感单元121及第二压感单元131内部的形状改变引起相应的阻值变化,可以根据计算阻值变化产生的位置和变化量的大小来判断按压点位置和按压力量大小,利用上下对应设置的第一压感单元121及第二压感单元131既进行位置检测(平面二维)又进行力量检测(第三维度)的计算,从而实现三维度的同时检测。 After pressing, the shape of the internal pressure of the first sensing unit 121 and the second pressure-sensing unit 131 changes cause a corresponding change in the resistance, the pressing position can be determined and the size of the pressing force according to the size and the position change amount calculating resistance change generated detected by the first pressure-sensing unit 121 and the vertically disposed corresponding to the second pressure-sensing unit 131 detects both the position (two-dimensional plane) and for detecting the power (the third dimension) is calculated to achieve the three dimensions simultaneously.

[0087] 为了构成可用于触控输入的压力感测输入装置,需要在本发明第一实施例中所提供的压力感测输入模块10的基础上加入其它模组。 [0087] In order to constitute an input means for sensing a pressure touch input, the pressure sensing input module requires in the first embodiment of the present invention is provided by adding other modules on the basis of 10. 此外,由于按压力及其所产生的形变特性,当压力感测输入模块10与其它模组进行叠加时,用于粘接各模组的贴合层与压力感测输入模块10的厚度、杨氏模量等参数将影响压力感测输入模块10对压力值大小的感测灵敏度及准确度。 Further, since the pressing force and the deformation characteristics generated when the pressure sensing module 10 is input stack with other modules, each module for the thickness of the adhesive layer is bonded with the pressure sensing input module 10, Yang 's modulus and other parameters will affect the sensing sensitivity and accuracy pressure sensing module 10 is input magnitude pressure value.

[0088] 请参阅图2A-图2B,本发明第二实施例提供一种压力感测输入装置20,其依次包括一盖板24、一第一贴合层221,一压力感测输入模块21,一第二贴合层222及一支撑层25。 [0088] Referring to FIGS. 2A- 2B, a second embodiment of the present invention provides a pressure sensing input device 20, which in turn includes a cover 24, a first adhesive layer 221, a pressure sensing input module 21 a second bonding layer 222 and a support layer 25. 压力感测输入模块21与第一实施例提供的压力感测输入模块相似,其包括一基板201及设置在基板201上下表面的第一压感层202与第二压感层203,第一压感层202上包括至少一个第一压感单元211,第二压感层203上包括至少一个第二压感单元212,有关第一压感单元211 与第二压感单元212的具体结构与本发明第一实施例相同,在此省略不再赘述。 A pressure sensing input pressure sensing module 21 providing the input module like the first embodiment, includes a substrate 201 and a pressure sensitive layer disposed on the first substrate 201 and lower surfaces 202 and the second pressure sensitive layer 203, a first pressure comprising at least one first pressure-sensing unit 211 on the sensitive layer 202, the second pressure-sensing layer 203 comprises at least one second pressure sensing unit 212, a first pressure-sensing unit 211 and the second pressure sensing means related to this specific configuration 212 the same as the first embodiment the invention, is omitted here omitted.

[0089] 盖板24的材质可以是硬质盖板,如玻璃、强化玻璃、蓝宝石玻璃等;还可以是软质盖板,如PEEK (polyetheretherketone聚醚醚酮),PI (Polyimide聚酰亚胺),PET (polyethyleneterephthalate聚对苯二甲酸乙二醇酯),PC (聚碳酸酯聚碳酸酯),PES (聚丁二酸乙二醇酯,PMMA (聚甲基丙稀酸甲酯polymethylmethacrylate)及其任意两者的复合物等材料。 [0089] The cover material 24 may be a hard cover, such as glass, tempered glass, sapphire glass and the like; may also be a soft cover, such as PEEK (polyetheretherketone polyether ether ketone), PI (Polyimide Polyimide ), PET (polyethyleneterephthalate polyethylene terephthalate), PC (polycarbonate polycarbonate), PES (polyethylene succinate, PMMA (polymethylmethacrylate polymethylmethacrylate) and any two complex materials thereof and the like.

[0090] 第一贴合层221及第二贴合层222可以选用OCA (光学透明胶,Optical Clear Adhesive)或LOCA (液态光学透明胶,Liquid Optical Clear Adhesive)。 [0090] The first bonding layer 221 and the second bonding layer 222 can use the OCA (optically clear adhesive, Optical Clear Adhesive) or the LOCA (liquid optical clear adhesive, Liquid Optical Clear Adhesive).

[0091] 在另外的实施例中,支撑层25可进一步为显示层,显示层可包括液晶显示器(LCD) 元件、有机发光二极管(OLED)元件、电致发光显示器(ELD)等。 [0091] In further embodiments, the support layer 25 may further be a display layer, the display layer may include a liquid crystal display (LCD) device, an organic light emitting diode (OLED) device, an electroluminescent display (ELD) and the like.

[0092] 请参阅图2B,当手指按压盖板24时,手指按压所产生的力由上至下逐层传递至支撑层25。 [0092] Please refer to Figure 2B, is transmitted to the support layer 25 when the pressing force of the finger plate 24, the finger pressing the resulting layer by layer from top to bottom. 在手指按压过程中,应变与组成压力感测输入装置20内各层的厚度、材料有关。 Finger pressing process, the thickness and composition of the strain sensing device 20 within the respective layers of the input pressure sensation, relating to the material. 在本发明的其中一个实施例中,压力感测输入装置20的厚度为约950μπι,手指按压压力感测输入装置20后,以压力感测输入装置20的上表面表示为厚度的零点,并自上而下对压力感测输入装置20的应变进行测量,将压力感测输入装置20的厚度及其对应的应变量进行了对比,并绘制获得如图2C中所示的应变(Elastic Strain)-厚度关系图。 In the present invention in which one embodiment, the thickness of the pressure sensing input device 20 is about 950μπι, finger pressing pressure sensing input device after 20, a pressure sensing input device on the surface 20 is represented as a zero thickness, and from while the pressure measured at the input device 20 sense the strain were measured, and the thickness of the corresponding pressure sensing strain input device 20 are compared, and the strain plotted as shown in FIG. 2C is obtained in (Elastic strain) - thickness FIG.

[0093] 其中,应变量-厚度关系图是与压力感测输入装置20的整体层叠结构密切相关的, 在本实施例中,压力感测输入装置20包括盖板24、第一贴合层221,压力感测输入模块21,第二贴合层222及支撑层25,上述任一层的厚度、杨氏模量等参数的变化,都会对应变量-厚度关系图中曲线的形态造成影响,因此,如图2C中所示的应变量-厚度关系图仅表示在特定条件下类似结构的大致走势图。 [0093] wherein the strain - the relationship between the thickness of the entire diagram is closely related to the structure of a laminated pressure sensing means sense input 20, in this embodiment, the pressure sensing means 20 includes an input plate 24, a first adhesive layer 221 , pressure sensing change parameter input module 21, the thickness of the second bonding layer 222 and support layer 25, any of the above layer, the Young's modulus, the corresponding variables are - the thickness of a graph diagram form impact, and therefore , should be variable as shown in Figure 2C - shows only the thickness of the graph charts is substantially similar to the structure under certain conditions.

[0094] 压力感测输入装置20中包括至少一个中性面(图未示),中性面为物体在受力作用下形变为零的平面,在中性面的应变为零,即应变值为零。 [0094] Pressure sensing input device 20 includes at least one neutral surface (not shown), the neutral plane of the planar object the deformation under action of the force is zero, the strain is zero at the neutral plane, i.e., strain values zero. 如图2C中Z处所示,Z处所指向的压力感测输入装置20对应层厚度的应变值均为零,Z处对应的压力感测输入装置20的五个中性面分别位于盖板24、第一贴合层221、压力感测输入模块21、第二贴合层222及支撑层25 内。 2C shown at Z in Fig, 20 corresponding to the layer thickness strain pressure sensing point input means premises Z are zero, the neutral plane five pressure sensing input means corresponding to Z 20 are located at the cover plate 24 the first bonding layer 221, a pressure sensing input module 21, the second bonding layer 222 and support layer 25. 压力感测输入装置20内以中性面为分界面,应变值可分为正应变及负应变(此处及以下的正应变、负应变分别表示其形变状态为拉伸、压缩)。 The pressure sensing means 20 to input the neutral plane of the interface, the value of the strain can be divided into positive and negative strain strain (herein below and normal strain, which represent the negative strain deformed state of tension, compression).

[0095] 结合图2B与图2C可知,当手指按压时,所对应的压力感测输入装置20上表面(盖板24的上表面)的应变为1.7225e-5; [0095] FIG 2B in conjunction with FIG 2C shows that the strain on the surface (the upper surface of the cover 24) sensing a pressure input means when the finger is pressed, the corresponding 20 1.7225e-5;

[0096] 在盖板24内,应变逐渐增加,并由负应变-零应变-正应变变化; [0096] in the cover 24, the strain is gradually increased by the negative strain - zero strain - positive strain variation;

[0097] I处所对应的应变值为盖板24与第一贴合层221接合面的应变值,该接合面的应变达到最高值1.6478e-5; [0097] I herein corresponding strain plate 24 is bonded to the first bonding layer 221 strain, and the strain reached the maximum bonding surface 1.6478e-5;

[0098] 在第一贴合层221内,应变逐渐下降,其变化趋势为正应变-零应变-负应变; [0098] In the first bonding layer 221, the strain is gradually decreased, the trend is positive strain - zero strain - negative strain;

[0099] Π处所对应的应变值为第一贴合层221与压力感测输入模块21的接合面的应变值,该接合面的应变为负方向应变且接近于零; [0099] Π spaces 221 and the pressure sensing strain value of the strain value corresponding to a first bonding layer bonding the measured input module 21, the strain of the strained bonding negative direction and is close to zero;

[0100] 在压力感测输入模块21内,应变逐步增大,并达到一定值(约5e_5)后,应变大小不随着厚度的增大而增大; After the [0100] pressure sensing within the input module 21, the strain is gradually increased and reaches a certain value (about 5e_5), with increasing magnitude of the strain without increase of the thickness;

[0101] m处所对应的应变值为压力感测输入模块21与第二贴合层23的接合面的应变值, 该接合面相应的应变为约5e-5; [0101] m corresponding to the strain used herein is a pressure sensing input module 21 with the corresponding strain in the second bonding layer 23 bonding strain value, the bonding surface of about 5e-5;

[0102] 在第二贴合层222内,应变逐渐下降,其变化趋势为正应变-零应变-负应变; [0102] In the second bonding layer 222, the strain is gradually decreased, the trend is positive strain - zero strain - negative strain;

[0103] IV处所对应的应变值为第二贴合层222与支撑层25的接合面的应变值,该接合面相应的应变为约-9.7e-6; [0103] IV premises bonding strain value of the second bonding layer 222 and the support layer 25 corresponding to the strain, the strain of the corresponding bonding surface of about -9.7e-6;

[0104] 在支撑层25内,应变逐渐上升,其变化趋势为负应变-零应变-正应变。 [0104] 25 within the support layer, the strain is gradually increased, the change trend is negative strain - zero strain - positive strain.

[0105] 可见,压力感测输入装置20中,在第一贴合层22与盖板24及与压力感测输入模块21的接合处,第二贴合层23与压力感测输入模块21及与支撑层25的接合处,应变的变化趋势均发生转变,使应变由正向负变化或由负向正变化,可见,第一贴合层22与第二贴合层23 的设置,使压力感测输入装置20的应变下降,由于第一贴合层22、第二贴合层23与压力感测输入模块21接合,因此,第一贴合层22与第二贴合层23对压力感测输入模块21应变减少的影响越小,可使压力感测输入模块21的应变值越大。 [0105] visible, pressure sensing input device 20, the first bonding layer 22 and the cover plate 24 and the junction with the pressure sensing input module 21, a second bonding layer 23 and a pressure sensing module 21 and the input the bonding of the support layer 25, the trend of change of strain occurred, the strain changes from positive to negative or from negative to positive changes, visible, a first bonding layer 22 and a second bonding layer 23, the pressure strain sensing input device 20 decreases, since the first bonding layer 22, a second bonding layer 23 is engaged with the pressure sensing input module 21, therefore, the first bonding layer 22 and the second bonding layer 23 is a pressure sensing Effects of strain sensing input module 21 is reduced smaller, the pressure can enter the sensing module 21 is larger strain values.

[0106] —一对应设置在基板201上下表面的若干个第一压感单元211与第二压感单元212 的受到按压力前后的应变差异越大,则其相应的电阻值差异越大,从而获得对按压力度大小灵敏度较优的压力感测输入装置20。 [0106] - a plurality of first pressure-sensing unit 201 is provided to a corresponding upper and lower surfaces of the substrate 211 and the second pressure sensing unit 212 by pressing the larger pressure difference before and after the strain, the greater the difference in the resistance values ​​corresponding to pressure sensing means to obtain an input size of the pressing strength superior sensitivity 20.

[0107] 在实际应用层面,压力感测输入装置20的前述五层结构中,因第一贴合层221、第二贴合层222与第一压感单元211及第二压感单元层212接合,第一压感单元211及第二压感单元层212设置在基板201的上下表面,且第一贴合层221、第二贴合层222及基板201的材料的可选择性最多,因而在本发明中仅主要对这三者的材料选择情况予以介绍。 [0107] In practical application level, the five-layer structure of the pressure sensing input device 20, by the first bonding layer 221, the second bonding layer 222 and the first pressure-sensing unit 211 and the second cell layer 212 of pressure sensitive engaging the first pressure-sensing unit 211 and the second layer of pressure sensitive unit 212 is provided on the upper and lower surfaces of the substrate 201, and the first bonding layer 221, the second bonding layer 222 and the substrate material optionally up to 201, and thus where these selected three main material to be introduced only in the present invention.

[0108] 请参阅图3A,本发明第二实施例所提供的压力感测输入装置20的第一变形中,基板201的杨氏模量E1为73.3GPa,基板201的厚度优选为100μm。 [0108] Please refer to Figure 3A, a first modification of the second pressure sensing input apparatus embodiment of the present invention provides 20, Young's modulus E1 of the substrate 201 is 73.3GPa, a thickness of the substrate 201 is preferably 100μm. 贴合层22(其包括第一贴合层221和/或第二贴合层222)的厚度为50μπι,贴合层22的杨氏模量范围为100-3000MPa,基板201的杨氏模量Ei比贴合层的杨氏模量E2大至少一个数量级以上,即Ei/E2>10;在本变形实施例中: Bonding layer 22 (which includes a first bonding layer 221 and / or the second bonding layer 222) thickness is 50μπι, the Young's modulus range paste bonding layer 22 is 100-3000MPa, Young's modulus of the substrate 201 E2 ratio of the Young's modulus Ei large bonding layer is at least an order of magnitude, i.e. Ei / E2> 10; modification in the present embodiment:

[0109] Ei/E2> = 24.4; [0109] Ei / E2> = 24.4;

[0110] 贴合层22的杨氏模量相较于基板201的杨氏模量非常小,可见,贴合层22与基板201的特性相差较大,设置在基板201上的第一压感单元211与第二压感单元212的应变大小更易于体现基板201的变化,其应变呈增大趋势,因此,可以获得更大的应变差Δε。 Young's modulus [0110] The bonding layer 22 compared to the Young's modulus of the substrate 201 is very small, visible, layer 22 is bonded to the substrate 201 and the characteristic difference between the larger, first pressure sensitive disposed on the substrate 201 the pressure sensing unit 211 and the second magnitude of the strain unit 212 is easier to reflect changes in the substrate 201, a strain which tended to increase, therefore, possible to obtain a larger difference in strain Δε. 第一压感单元211与第二压感单元212之间的应变差Δε随着贴合层22的杨氏模量的下降而上升, 其中,当贴合层22的杨氏模量为IOO-IOOOMPa时,应变差Δε随着贴合层22的杨氏模量的降低而显著增加。 A first pressure sensing means is a strain difference between the pressure sensing unit 211 and the second stick 212 Δε decrease as the Young's modulus of the bonding layer 22 is raised, wherein, when the Young's modulus of the bonding layer 22 is IOO- IOOOMPa, the difference in strain Δε paste with reduced Young's modulus of the bonding layer 22 is significantly increased.

[0111] 经过多次研究,得出结论如下:基板22的杨氏模量为一固定值且至少大于贴合层22的杨氏模量至少一个数量级时,应变差△ ε与贴合层22的杨氏模量呈负相关。 [0111] After much research and concluded as follows: Young's modulus of the substrate 22 is at least greater than a fixed value and Young's modulus of bonding paste layer 22 is at least one order of magnitude, the difference △ ε and strain bonding layer 22 Young's modulus of the negative correlation.

[0112] 在另外的实施例中,EVE2的值更优为大于或等于100。 [0112] In a further embodiment, the value of EVE2 more preferably greater than or equal to 100.

[0113] 请参阅图3Β,本发明第二实施例所提供的压力感测输入装置20的第二变形例,其与上述第一变形实施例相比的区别在于基板201的杨氏模量仅为6000MPa,当贴合层22的杨氏模量为1000_3000MPa时,基板201的杨氏模量E1与贴合层22的杨氏模量比值为2-6, EVE2值小于10。 [0113] Referring to FIG 3ss, a second modification of the pressure sensing embodiment of the input device of the second embodiment of the present invention provides 20, which is the difference between the above-described embodiment compared to the first modification in that the Young's modulus of the substrate 201 only as 6000MPa, when the Young's modulus of the adhesive layer 22 is 1000_3000MPa, Young's modulus of the substrate 201 and the Young's modulus E1 bonding layer 22 is 2-6, EVE2 value of less than 10. 设置在基板201上的第一压感单元211与第二压感单元212的应变大小与贴合层22及基板201均相关,由于贴合层22的杨氏模量与基板201的杨氏模量相差较小,当贴合层22与基板201的性能(如弹性性能)相仿,第一压感单元211与第二压感单元212之间应变差变化无规律,可见,当基板201的杨氏模量E1S较小值,且其与贴合层22的杨氏模量E2的比值小于10时,贴合层22的杨氏模量对增加应变差Δε的作用不显著。 A first pressure sensing means disposed on the substrate 201 a 211 a second pressure sensing unit 212 are associated with the magnitude of the strain the adhesive layer 22 and the substrate 201, since the seal layer attached to the Young's modulus Young's modulus of the substrate 22 is 201 the amount of difference is small, when the bonding layer 22 and the substrate 201 properties (e.g., elastic properties) similar, a difference in strain between the irregular variation of the first pressure-sensing unit 212 and the second pressure sensing unit 211, visible, when the substrate 201 YANG E1S's modulus smaller value, and the ratio of Young's modulus of the adhesive layer 22 is less than E2, 10, attached to the Young's modulus of the bonding layer 22 to increase the difference in strain Δε had no significant effect.

[0114] 请参阅图3C,本发明第二实施例所提供的压力感测输入装置20的第三变形例,其与上述第一变形实施例相比的区别在于贴合层22的厚度范围为25-125μπι时,第一压感单元211与第二压感单元212的应变差Δε与贴合层22的厚度的变化大小成反比。 [0114] Please refer to Figure 3C, a third modified embodiment of the pressure sensing embodiment of the input device of the second embodiment of the present invention provides 20, which is the difference between the above-described embodiment compared to the first modification in that the adhesive layer thickness in the range of 22 25-125μπι, the first unit 211 and the second pressure sensing unit 212 sensing the pressure difference between the strain variation Δε and the bonding layer 22 is inversely proportional to the thickness. 由于贴合层22 会使第一压感单元211及与其对应设置的第二压感单元层212的应变值变小,因此,贴合层22越薄,其对第一压感单元211与第二压感单元212的影响变小,从而可使应变差△ ε越大, 但是贴合层22的厚度变化对应变差△ ε的影响远小于贴合层22的杨氏模量对应变差△ ε的影响。 Since the adhesive layer 22 causes the first pressure-sensing unit 211 and a strain value corresponding to a second set of pressure sensitive unit layer 212 becomes small, and therefore, the thinner the adhesive layer 22, which is the first 211 and the second pressure sensing means Effects of two pressure-sensing unit 212 becomes small, thereby allowing greater difference △ strain [epsilon], but the thickness of the adhesive layer 22 corresponding to a change △ deteriorated impact is much smaller than [epsilon] Young's modulus of the adhesive layer 22 is deteriorated corresponding △ the impact of ε. 当贴合层22厚度范围小于25μπι时,由于贴合层22厚度过薄,将无法起到将贴合的作用,使压力感测输入装置20内各层结构之间接合不紧密,而降低压力感测输入装置20的产品质量;而当贴合层22的厚度范围大于125μπι时,由于贴合层22的厚度过大,使得压力感测输入装置20在受到按压作用力时,第一压感单元211及与其对应设置的第二压感单元层212 的应变值均变小,由于两者数值变小,两者的差值(即应变差A ε)也会相应变小。 When the adhesive layer thickness in the range of less than 22 25μπι, since the adhesive layer 22 is too thin, will not play a role in the bonding, does not close the engagement between the inner structure of each sensing the input device 20 sense the pressure, the pressure is reduced quality sensing input device 20; and when the adhesive layer thickness in a range greater than 22 125μπι, since the thickness of the seal layer 22 attached is too large, the pressure sensing input device 20 is pressed in a force, the first pressure sensitive unit 211 and a strain value corresponding to a second set of pressure sensitive unit layer 212 are reduced, since both the value becomes smaller, the difference between the two (i.e., difference in strain a ε) becomes smaller accordingly.

[0115] 请参阅图3D,本发明第二实施例所提供的压力感测输入装置20的第四变形例,其与上述第一变形实施例相比的区别在于基板201的厚度范围为50-450μπι时,第一压感单元211与第二压感单元212的应变差Δε与基板201的厚度的变化大小成正比。 [0115] Please refer to Figure 3D, a fourth modification of the pressure sensing embodiment of the input device of the second embodiment of the present invention provides 20, which is the difference between the deformation of the first embodiment in that the thickness range of the substrate as compared to 50- 201 when 450μπι, the first pressure-sensing unit 211 and the second pressure sensing means and the strain difference Δε thickness of the substrate 201 changes in proportional to the size of 212. 由于基板201的厚度越大,设置在基板201上下表面的第一压感单元211与第二压感单元212的应变差Δε与基板201的应变值正相关,其厚度越大,基板201的应变越大,则应变差△ ε也越大。 Due to the greater thickness of the substrate 201, 201 is provided at a first pressure sensitive positive correlation between the substrate unit 211 and the second upper and lower surfaces of the pressure sensitive difference in strain Δε value of the substrate 201 and the strain unit 212, the greater the thickness, the substrate 201 strain the greater should be the greater variation △ ε. 但是基板201太厚会影响基板201上下表面的第一压感单元211与第二压感单元212之间的温度补偿效果及设备的整体厚度,因此,当基板201的厚度范围为50_450μπι时,应变差Δε与基板201 的厚度正相关。 However, the substrate 201 is too thick will affect the upper and lower surfaces of the first pressure-sensing unit 211 and the overall thickness of between 212 and the temperature compensation effect device 201 of the second substrate a pressure sensitive means, therefore, when the substrate thickness in the range of 201 50_450μπι, strain difference Δε positive correlation with the thickness of the substrate 201.

[0116] 当基板201的厚度小于50μπι时,由于压力感测输入装置20过薄,使得设置在基板201上下主表面的第一压感单元211与第二压感单元212之间的应变差Δε值较小,无法有效感测按压力度的大小;而当基板的厚度大于450μπι时,不仅会使压力感测输入装置20的整体厚度尺寸过大,还会使得第一压感单元211与第二压感单元212之间的温度变化量不同,从而影响温度补偿的效果。 [0116] When the thickness of the substrate is less than 201 50μπι, since the pressure sensing input device 20 is too thin, so that the difference in strain Δε is provided between the substrate 212 pressure-sensing unit 201 of the first major surface 211 and the second vertical pressure sensing unit value is small, can not effectively sense the size of the sensing pressing strength; and when the thickness of the substrate is greater than 450μπι, not only will the overall thickness of the pressure sensing means sense input 20 is too large, but also that the first pressure-sensing unit 211 and the second pressure sensing means between the different temperature variation 212, so that the influence of the temperature compensation effect.

[0117] 本发明第三实施例提供了一种压力感测输入装置,其与上述第二实施例的区别在于在本实施例中可通过调整压力感测输入装置各层结构的厚度及其杨氏模量,从而使压力感测输入装置的整体结构的至少一个中性面的其中之一,是位于该基板的力学中性面,其中,中性面为压力感测输入模块内应变为零的平面,如此,设置在基板上下主表面的第一压感单元(图未示)及第二压感单元(图未示)的应变为一正一负,因此,在相同按压力作用下, 第一压感单元及第二压感单元的应变差Δε将大于其应变同为正或同为负的情况,具有增大第一压感单元及第二压感单元的应变差A ε的优点。 [0117] The third embodiment of the present invention provides a pressure sensing input device, which differs from the second embodiment in that the present embodiment can be obtained by adjusting the thickness of each structural device and a pressure sensing input YANG 's modulus, so that the pressure sensing input apparatus overall configuration wherein at least one of a neutral plane situated mechanical neutral plane of the substrate, wherein the neutral plane of the pressure sensing module input zero strain plane, so, the second pressure is provided and a strain sensing unit (not shown) a first pressure sensing unit (not shown) for the upper and lower main surface of the substrate a positive and negative, and therefore, under the same pressing force, strain difference between the first pressure sensing means and the second pressure sensing means is greater than the Δε is a strain with the same positive or negative, having a first pressure increasing unit and a second sensing means sensing the pressure difference in strain a ε advantages .

[0118] 更进一步的,最佳方案是通过各层厚度与杨氏模量的设计使得整体结构具有唯一的中性面,且是位于该基板的力学中性面。 [0118] Furthermore, the optimum thickness of each program by the Young's modulus of the overall structure of a unique design such that a neutral plane, and is located in the neutral plane of the substrate mechanics. 即整体结构的力学对称中心位于该基板的力学中性面,如此,可使在相同按压力作用下,第一压感单元及第二压感单元的应变差Δε最大的优点。 I.e., the overall configuration of the mechanical center of symmetry is located in the neutral mechanical surface of the substrate, thus, can at the same pressing pressure, strain sensing means and the pressure difference between the first pressure sensing means Δε second biggest advantages. 从而可以有效提高压力感测输入模块的压力感测灵敏度。 Thereby effectively increase the pressure sensing input of the pressure sensing module sensitivity.

[0119] 压力感测输入模块中各个第一压感单元及与其一一对应设置的第二压感单元(图未示)的应力差的大小除了与中性面的位置及基板、贴合层的厚度及杨氏模量有关之外,还有第一压感单元及第二压感单元图案形状及排布方式有关。 [0119] The size of each of the stress differential pressure sensing a first pressure sensing means and the second input module, the pressure sensing unit disposed in correspondence thereto (not shown) in addition to the neutral position and the surface of the substrate, bonding layer For the outside, as well as a first pressure sensing means and the second pressure sensing means and arranged in a pattern shape manner about the thickness and Young's modulus.

[0120] 请参阅图4,本发明第四实施例提供了一种压力感测输入模块40,其与第一实施例的区别在于第一压感层42上设置有阵列分布的第一压感单元421,图4中仅以5列X 9行阵列的第一压感单元421为例来进行说明,其实际数量不作限制。 [0120] Referring to FIG 4, a fourth embodiment of the present invention provides a pressure sensing input module 40, which differs from the first embodiment in that the pressure sensing layer disposed on the first pressure sensitive array 42 has a first distribution unit 421, in FIG. 4 only the first pressure-sensing means 5 X 9 rows of the array 421 will be described as an example, the actual number is not limited. 因压力感测输入模块40为方形(非圆形),受其形状的影响,使得第一压感层42的平面上不同的区域,在受到按压作用力后,沿各个方向的形变程度并不相同,其沿某一个方向具有最大形变程度,而沿另一方向具有最小形变程度。 Input by the pressure sensing module 40 is a rectangular (non-circular), subject to influence of the shape, so that different areas on the plane of the first layer 42 of pressure sensitive, force is pressed in the degree of deformation in each direction is not the same, which has a maximum degree of deformation in one direction, and having a minimum degree of deformation in the other direction. 其中,形变程度的大小与压感单元的图案形状有关。 Wherein the degree of deformation of the shape of the pattern and size of the pressure sensitive unit concerned. 此外,为了提升压力感测的灵敏度,较佳的设计是使第一压感单元421的图案在沿最大形变程度的方向(最大应变方向)上具有最大长度。 Further, in order to enhance the sensitivity of the pressure sensed is the preferred design of the first pattern of the pressure sensing unit 421 has a maximum length in a direction along the maximum degree of deformation (the maximum strain direction).

[0121] 具体说来,请参阅图5Α,当手指按压压力感测输入模块40后,第一压感层42受到力的作用,会产生一定的形变。 [0121] In particular, see Figure 5a, when a finger presses the pressure sensing input module 40, 42 by the force of the first pressure-sensitive layer, will have some deformation. 由于常用的压力感测输入模块40为方形,(非圆形,圆形具有旋转不变性),不具有旋转不变性,受其形状的影响,使得第一压感层42平面上各点在受到按压作用力后沿各个方向的应变程度并不完全相同,其可能沿某一方向具有最大应变,而与之垂直的另一方向具有最小应变,其他方向的应变程度介于二者之间。 Since the common pressure sensing input module 40 is a square (non-circular, circular rotation invariance), does not have a rotation invariance, subject to influence of the shape, so that each point on plane 42 by a first layer of pressure sensitive degree of strain after the pressing force in each direction is not exactly the same, which may have a maximum strain in one direction, a direction perpendicular thereto and the other having a minimum strain, the degree of strain between the two other directions. 其中,定义在某一区域中形变程度最大的方向即为该区域的最大应变方向,而在该区域中形变程度最小的方向为该区域的最小应变方向,其中最大应变方向与最小应变方向相互垂直。 Which defines the maximum degree of deformation in the direction of a region is the region of maximum strain direction, and in the area for minimal deformation in the direction of minimum strain direction of the region in which the maximum and minimum strain strain direction mutually perpendicular directions .

[0122] 在不具有旋转不变性的压力感测输入模块40中,第一压感层42平面上不同区域的最大应变方向也不一定相同,具体举例如下:分别选取按压的受力区域分别位于第一压感层42的中心处(如图5A中A处所示)、对角处(如图5A中B处所示)、长边中点处(如图5A中C处所示)、短边中点处(如图5A中D处所示)。 [0122] In the pressure sensing input module 40 without rotational invariance, the plane 42 a first layer of pressure sensitive regions of maximum strain in different directions are not necessarily the same, specifically exemplified as follows: the pressing force in the region were selected are located at the center (shown at a in FIG. 5A) a first pressure sensitive layer 42, the diagonal (shown at B in FIG. 5A), the midpoint of the long side (shown at C in FIG. 5A), at the midpoint of the short side (shown at D in FIG. 5A).

[0123] 当按压的受力区域位于第一压感层42的中心处,该中心处的最大应变方向为如图5B中方向S中所示,最大应变方向S中与第一压感层42的长边方向平行; [0123] When the pressing force is positioned at the center region of a first pressure sensitive layer 42, the direction of maximum strain at the center as shown in Figure 5B in the direction S, the maximum strain direction S with the first layer 42 of pressure sensitive parallel to the longitudinal direction;

[0124] 当按压的受力区域位于第一压感层42的一对角处,该对角处的最大应变方向为如图5C中方向S角所示,最大应变方向S角与经该对角连接的对角线垂直; [0124] When the pressing force of the pair of corner region is located at a first pressure sensitive layer 42, the angle of the direction of maximum strain at 5C in a direction indicated by S in FIG angle, angle of maximum strain direction S by the pair vertical diagonal corner joint;

[0125] 当按压的受力区域位于第一压感层42的长边中点处时,该处的最大应变方向为如图中方向Sk所示,最大应变方向Sk与第一压感层42的长边方向垂直; [0125] When the pressing force region located in the longitudinal midpoint of the first pressure-sensing layer 42, where direction of maximum strain in the direction shown in FIG Sk, Sk direction of maximum strain of the first layer 42 of pressure sensitive perpendicular to the longitudinal direction;

[0126] 当按压的受力区域位于第一压感层42的短边中点处,该处的最大应变方向为如图5E中方向沒§所示,最大应变方向沒§与第一压感层42的长边方向平行。 [0126] When the pressing force region located at the midpoint of the short side of the first pressure sensitive layer 42, where direction of maximum strain in the direction shown in FIG. 5E § no, not the direction of maximum strain of the first pressure sensing § parallel to the longitudinal direction of the layer 42.

[0127] 本发明第四实施例中按压的受力区域仅以图5B-图5E中所示的中心处、对角处、长边中点处及短边中点处来进行最大应力方向的说明,其实际按压的受力区域并不作限制, 在另外的实施例中,还可实现多点同时按压操作,其最大应力方向可结合本发明第四实施例中所示内容得出。 [0127] the pressing force in the region of the embodiment shown only at the center in FIG. 5B- a fourth embodiment of the present invention, FIG. 5E, on the corner, at the midpoint of the long side and the short side at the midpoint to the maximum stress direction description, the pressing force of the actual area not limitation, in a further embodiment, also multi-point simultaneous pressing operation, the direction of maximum stress a fourth embodiment of the present invention may incorporate what is shown in the embodiment drawn.

[0128] 上述关于第一压感层42的最大应变方向的说明也同样适用于第二压感层(图未示),根据压力感测输入模块40的具体层叠结构,受到相同按压力时,第一压感层42与第二压感层的相对应区域的最大应变方向通常为相同。 [0128] The description of the direction of maximum strain of the first pressure-sensing layer 42 also apply pressure to the second sensing layer (not shown), depending on the pressure sensing laminated structure of the input module 40, when subjected to the same pressing force, 42 corresponding to a second region of the layer of pressure sensitive direction of maximum strain of the first pressure sensitive layer is typically the same.

[0129] 在本实施例中所述第一压感单元421与所述第二压感单元(图未示)的形状为非旋转对称性图形。 [0129] Example embodiments of the first pressure-sensing unit 421 and the shape of the second pressure sensing unit (not shown) in a non-rotational symmetry of this pattern.

[0130] 请参阅图6A-6B,本发明第四实施例中第一压感单元421为椭圆绕线状,其中,第一压感单元421的长轴方向为a方向(即第一压感单元421沿a方向的总长度La最大),短轴方向为b方向(即第一压感单元421沿b方向的总长度Lb最小),在一实施例中,a方向与b方向垂直。 [0130] Referring to FIG 6A-6B, a first embodiment of the fourth embodiment of the pressure sensing unit 421 of the present invention is an oval-shaped winding, wherein the longitudinal direction of the first pressure-sensing unit 421 is a direction (i.e., the first pressure sensitive unit 421 along a direction of the maximum overall length La), b is the minor axis direction, a direction (i.e., the total length of the first pressure-sensing unit 421 in the direction b minimum Lb), in one embodiment, a direction perpendicular to the direction b.

[0131] 具有上述椭圆绕线状的第一压感单元421朝a方向上的总长度最大,而朝b方向上的总长度最小,在按压时,在朝a方向上的应变量大于朝b方向上的应变量,如此,有利于施加在第一压感单元421上的按压力所产生的应变可以集中在一个方向上体现,从而使第一压感单元421的形变更大。 [0131] The first pressure-sensing unit having the above-described elliptical-shaped bobbin 421 toward a direction of the maximum overall length, total length toward the minimum in the b direction, when pressed towards the strain in the direction is larger than a toward b strain direction, thus, facilitates the application of strain by the pressure generated in the first pressure sensing unit 421 may be embodied in one direction, so that the first pressure-sensing unit 421 of greater deformation. 由于第一压感单元421集中在单一方向上发生形变,因此可以使第一压感单元421的阻值RFn相比于初始状态发生的变化更大,从而更精准地体现按压力度的大小。 Since the first pressure-sensing unit 421 focused is deformed in a single direction, it is possible that the resistance value of the first pressure-sensing unit 421 RFn larger compared to the initial state changes occur, thereby more accurately reflect the size of the pressing intensity.

[0132] 此外,由于第一压感单元421为椭圆绕线状,在一单位面积内,第一压感单元421的图案密度相较于单一长条线状的图案密度更大,因此,在受到手指按压时,第一压感单元421的形变更大,因此第一压感单元421对压力侦测的灵敏度更高。 A pattern density greater [0132] Further, since the first pressure sensitive unit 421 is oval-shaped winding, in a unit area of ​​the first pressure-sensing unit 421 is compared to the pattern density of a single linear strip, therefore, when pressed by a finger, the first pressure deformation sensing unit 421 is larger, so the higher the pressure sensing unit 421 of the first pressure detection sensitivity.

[0133] 请参阅图6C,第一压感单元具有另外的变形实施例:其中一变形实施例与上述第一变形实施例的区别在于第一压感单元421c为折线状,第一压感单元421c折线状图案朝一方向的总长度最大,该方向即为a方向,第一压感单元421c折线状图案朝一方向的总长度最小,该方向即为b方向,其中,a方向与b方向垂直。 [0133] Refer to 6C, the first pressure-sensing means having a further modified embodiment: a modification wherein the difference between the above-described first embodiment and the modification of the first embodiment in that the pressure sensing means is a fold line 421c, a first pressure sensing means maximum fold line pattern 421c total length in one direction, this direction is the direction of a first pressure-sensing unit 421c in one direction fold line pattern of the minimum overall length, this direction is the direction b, where, a direction perpendicular to the direction b. 第一压感单元421c的a方向为第一压感单元421c的长轴方向,第一压感单元421c的b方向为第一压感单元421c的短轴方向。 A first pressure-sensing unit 421c direction is the long axis direction of the first pressure-sensing unit 421c, b pressing direction of the first sensing unit 421c is a short-axis direction of the first pressure-sensing unit 421c.

[0134] 第一压感单元421c在受到按压作用力之后,在朝a方向上的应变量大于朝b方向上的应变量,如此,有利于施加在第一压感单元421c上的按压力所产生的应变可以集中在一个方向上体现,从而使第一压感单元421c的形变更大,从而更精准地体现按压力度的大小。 [0134] The first pressure sensing unit 421c is pressed after a force, toward a strain in the direction is larger than the strain in the direction b towards, so conducive applied to the first pressure sensitive unit 421c of the pressing force It may be embodied deformable in one direction, so that the first pressure sensing unit 421c larger deformation, thereby more accurately reflect the size of the pressing intensity.

[0135] 在上述压感单元的变形中,椭圆绕线状因导线大部分区段均为圆弧,在制程中较易制作,且更不易损伤,具有更强的实用性。 [0135] In the deformation of the pressure sensitive unit, an elliptical shape by winding the wire segments are most arc produced in the manufacturing process easier, and less prone to damage, more applicable.

[0136] 第一压感单元421的形状还可以是其它线状如:曲线状(如图6D中第一压感单元421d)、等长多段串联线状(如图6E中的第一压感单元421e)、不等长多段串联线状(如图6F 中的第一压感单元421f)或回字型线状(如图6G中的第一压感单元421g)等形状。 [0136] shape of the first pressure-sensing unit 421 may also be other linear as: curved (FIG. 6D, a first pressure sensing means 421d), as long as the multistage linear series (a first pressure sensing FIG. 6E unit 421e), unequal multistage linear series (first pressure-sensing unit 421f in FIG. 6F) or return line shaped (FIG. 6G first pressure sensing unit 421g) shape. 上述第一压感单元421的图案形状的变形同样也适用于本发明中的其他实施例。 A first pressure-sensing deformation of the shape of the pattern unit 421 also applicable to other embodiments of the present invention in embodiments. 上述针对第一压感单元421图案形状的各种限定及其变形适用于第二压感单元(图未示)。 For the above defined a first pressure-sensing unit 421 and the pattern shape modification applies to the second pressure sensing unit (not shown).

[0137] 在本发明上述的第一至第四实施例中,当一完整的压力感测输入装置的层叠结构及各层的材料确定之后,压力感测输入装置中各层结构的应变值与压力感测输入装置整体结构的厚度关系也是确定的,即压力感测输入装置整体结构的中性面的数量及其具体的位置同样是确定的,如本发明第二、第三实施例中通过调整压力感测输入装置的贴合层及基板的杨氏模量及厚度,从而可以使中性面位于或不位于基板内。 [0137] In the first to fourth embodiments of the present invention, when the laminated structure is determined after a complete input of the pressure sensing device and a material of each layer, the strain value of the pressure sensing input device and the structure of layers the thickness of the pressure sensing input relationship is determined the overall configuration of the apparatus, i.e., the specific number and position of the neutral plane of the entire configuration of a pressure sensing input means is also determined, as in the second, the third embodiment of the present invention, by pressure sensing means to adjust the input layer and the substrate bonded Young's modulus and thickness, so that the neutral plane can be located or is not located within the substrate.

[0138] 请参阅图7A,本发明第五实施例压力感测输入模块50中包括一基板51,第一压感层52设置在基板51的上表面,基板51的下表面设有与第一压感层52相对应设置的第二压感层53,其中,第一压感层52、基板51及第二压感层53的整体厚度为T。 [0138] Please refer to FIGS. 7A, in the fifth embodiment of the pressure sensing input module 50 of the present invention comprises a substrate 51 on the upper surface, the lower surface of the first substrate 51 is provided with a substrate 51, a first pressure sensitive layer 52 is provided the second layer of pressure sensitive pressure sensitive layer 52 disposed corresponding to 53, wherein the first pressure sensitive layer 52, the entire thickness of the second substrate 51 and the pressure sensitive layer 53 is T. 第一压感层52及第二压感层53分别包括至少一个第一压感单元521及至少一个第二压感单元531,第一压感单元521及第二压感单元531与上述实施例相同,在此不再赘述。 A first pressure sensitive layer 52 and the second pressure-sensing layer 53 includes at least one first pressure-sensing unit 521 and at least one second pressure-sensing unit 531, a first pressure-sensing unit 521 and the second pressure-sensing unit 531 with the above-described embodiment the same, are not repeated here.

[0139] 请参阅图7B,当压力感测输入模块50所处的完整的压力感测输入装置各层结构与材料确定之后,受到按压作用力时,压力感测输入装置各层结构及其相应的应变趋势关系就是确定的,此处仅选取压力感测输入模块50 (厚度的横坐标为nm的厚度值为T)的应变-厚度关系线,其中,η处对应第一压感层52位于压力感测输入模块50内的厚度位置,m处则对应第二压感层53位于压力感测输入模块50内的厚度位置(因第一压感层52与第二压感层53 相对于基板的厚度较小,此处仅以一个点表示)。 [0139] Referring to FIG. 7B, when the sensed pressure is determined after the input module 50 at which a complete pressure-sensing input device and the structure of each material, when subjected to the pressing force, the structure of each pressure sensing device sensing its corresponding input trends strain relationship is determined, where only selected pressure sensing input module 50 (the abscissa is the thickness T of nm in thickness) strain - thickness line, wherein, [eta] at the corresponding first pressure sensing layer 52 is located position within the thickness of the pressure sensing input module 50, m corresponds to a second pressure at the sensing layer 53 in the pressure sensing position within the thickness of the input module 50 (by the first pressure sensitive layer 52 and the second pressure-sensitive layer 53 to the substrate the smaller thickness, here expressed in only one dot).

[0140] 如图7B中应变-厚度关系线的VI处所示,为本发明第五实施例压力感测输入模块50的第一变形实施例:当压力感测输入模块50的一个中性面位于基板51内时,第一压感单元521的应变为负应变(即为压缩状态),第二压感单元531的应变为正应变(即为拉伸状态)。 [0140] FIG. 7B strain - VI shown at the relationship between the thickness of the line, the pressure sensing embodiment of the present fifth embodiment input module 50 of the first modification of the embodiment of the invention: the input module when the pressure sensing surface 50 is a neutral when positioned within the substrate 51, the first pressure-sensing unit 521 strain is negative strain (i.e. compression), the second pressure-sensing unit 531 strain is positive strain (i.e. stretched state). 为了使第一压感单元521与第二压感单元531之间的应变差Δε更大,较佳是使第一压感单元521的应变量绝对值与第二压感单元531的应变量绝对值均为最大。 To the first pressure-sensing strain between the unit 521 and the second pressure sensing unit 531 Delta] [epsilon greater, preferably from the pressure sensing unit 521 of the first strain of the absolute value of the absolute pressure sensing unit 531 and the second strain of values ​​are maximum.

[0141] 为了提高第一压感单元521的应变量与第二压感单元531的应变量,可通过调整第一压感单元521的长轴方向、第二压感单元531的长轴方向分别与其所在区域的最大应变方向平行或仅成一很小的角度,从而实现对第一压感单元与第二压感单元之间的应变差A ε 值大小的调整。 [0141] In order to increase the pressure sensing unit 521 of a first strain and the second pressure sensing unit 531 should be variable by adjusting the long axis direction of the first pressure-sensing unit 521, the major axis direction of the second pressure-sensing unit 531, respectively area maximum strain direction parallel thereto or only to a small angle, in order to achieve the adjustment value a ε strain difference between the size of the first pressure-sensing unit and the second pressure sensing means.

[0142] 其中,定义第一压感单元521的长轴方向与第一压感单元521所在区域的最大应变方向的夹角呈角度al。 [0142] wherein the angle between the longitudinal direction defining a first pressure-sensing unit 521 is a region where the first pressure-sensing unit 521 in the direction of maximum strain angled al. 与第一压感单元521对应设置的第二压感单元531的长轴方向与其所在区域的最大应变方向的夹角呈角度a2,其中,角度al与角度a2的角度不含方向性,即其范围为0°-90°。 The angle between the direction of maximum strain in the long axis direction of the second pressure-sensing unit 531 is provided with a first pressure sensing unit 521 corresponding to an angle thereto Area of ​​a2, where the angle a2 is the angle of the angle al free directionality, i.e. it in the range of 0 ° -90 °. 在本实施例中,角度al与角度a2优选为0°_45°,还可为0°_20°,还可进一步为〇°_1〇°,最优为0° (即第一压感单元521及第二压感单元531的长轴方向分别与两者所在区域的最大应变方向平行设置)。 In the present embodiment, the angle al and an angle a2 is preferably 0 ° _45 °, may also be 0 ° _20 °, may further be square ° _1〇 °, optimally 0 ° (i.e., the first pressure-sensing unit 521 and major axis direction of the second pressure-sensing unit 531 are disposed in parallel to the direction of maximum strain region located therebetween).

[0143] 更进一步地,当第一压感单元521的长轴方向与第一压感层52的最大应变方向相同时,可使第一压感单元的应变量绝对值最大;当第二压感单元531的长轴方向与第二压感层53的最大应变方向相同时,可使第二压感单元531的应变量绝对值最大。 [0143] Further, when the maximum strain of the long axis direction of the first pressure-sensing unit 521 and a first pressure sensitive layer 52 are the same, the first variable can be the largest absolute pressure sensing unit; when the second pressure the direction of maximum strain axis direction sensing unit 531 and the second pressure sensitive layer 53 are the same, the second pressure-sensing unit 531 can make the absolute value of the maximum strain. 在第一压感单元521与第二压感单元531的应变为一正一负的前提下,可使第一压感单元521与第二压感单元531的应变差△ ε获得较大值。 The strain sensing unit 521 of the first pressure and the second pressure sensing unit 531 is a positive and a negative premise, the difference △ ε strain can first pressure sensing unit 521 and the second pressure sensing unit 531 to obtain a larger value.

[0144] 在另外的变形实施例中,当压力感测输入模块50所处的压力感测输入装置整体结构具有唯一一个中性面,且位于基板51的力学中心面时,第一压感单元的应变量与第二压感单元的应变量绝对值达到最大值,则两者的应变差△ ε最大。 When [0144] In a further modified embodiment, when the entire structure of the pressure sensing module 50 which input a pressure sensing device having only one input neutral plane, and located in the center of the mechanical surface of the substrate 51, a first pressure sensing means the strain with the strain sensing unit is a second pressure reaches a maximum absolute value, the difference △ ε between the two maximum strain.

[0145] 如图7Β中应变-厚度关系曲线的V处及W所示:当压力感测输入模块50中没有任一个中性面位于基板51内时(S卩应变ε ' =0及应变ε" =〇的平面均不在基板51内),而与基板51最靠近的中性面位于基板51之上或之下,将决定第一压感单元521的应变与第二压感单元531的应变同为负应变或同为正应变。 [0145] FIG 7Β strain - Relationship between the thickness of the V and W-curve is as follows: When the (S Jie sensing the pressure within the substrate 51 in the input module 50 is not located in any of a neutral plane strain ε '= 0 and [epsilon] strain "= square plane of the substrate 51 are not in), while the neutral plane is located above the substrate 51 closest to substrate 51 or below, the strain will determine the strain sensing unit 531 and the second pressure to the first pressure sensing unit 521 the same strain or the same negative positive strain.

[0146] 如图7Β中V处所示,为本发明第五实施例压力感测输入模块50的第二变形实施例: 当第一压感单元521的应变与第二压感单元531的应变同为负应变,为了使第一压感单元521与第二压感单元531之间的应变差△ ε更大,需要使第一压感单元的应变量绝对值较大, 而使第二压感单元的应变量绝对值较小,如此,两者的应变差△ ε较大。 [0146] FIG 7Β V in the illustrated embodiment the pressure sensing input module 50 of the second modification of the fifth embodiment of the present invention embodiments Example: When a strained first pressure sensing unit 521 and the second pressure sensing unit 531 with negative strain, in order to make the first pressure-sensing strain greater the difference between △ unit 521 and the second pressure sensing unit 531 ε, necessary to make the strain sensing unit is a first large absolute pressure, the second pressure the absolute value of the strain sensing unit is small, thus, the strain difference △ ε between the two larger.

[0147] 而为了提高第一压感单元521的应变量绝对值,第一压感单元521的长轴方向与其所在区域的最大应变方向的夹角的角度al可选为0°_45°,还可为0°-20°,还可进一步为(Γ-ΐΟ%最优为0° (即第一压感单元521 的长轴方向分别与其所在区域的最大应变方向平行设置);为了降低第二压感单元531的应变量绝对值,第二压感单元531的长轴方向与其所在区域的最大应变方向的夹角的角度a2则优选为45°-90°,还可为70°-90°,还可进一步为80°-90°,最优为90° (即第二压感单元531的长轴方向与其所在区域的最大应变方向垂直设置)。 [0147] In order to increase the pressure of the first sensing unit 521 the absolute value of strain, angle of maximum strain in the direction of the long axis direction of the first region of the pressure sensing unit 521 where the angle al therewith optionally 0 ° _45 °, further may be 0 ° -20 °, may further be (Γ-ΐΟ% and optimally 0 ° (longitudinal direction i.e. the direction of maximum strain of the first pressure-sensing unit 521 are disposed in parallel therewith area); in order to reduce a second the pressure sensing unit 531 the absolute value of strain, angle of direction of maximum strain of the longitudinal direction of the second region of the pressure sensing unit 531 where its angle a2 is preferably 45 ° -90 °, 70 ° -90 ° may also be , may further be 80 ° -90 °, and optimally 90 ° (i.e., the major axis direction of the second pressure-sensing unit 531 in the direction of maximum strain of vertically disposed thereto area).

[0148] 如图8A-8B中所示,在本实施例中,第一压感层52的图形排布方式如图8A所示,而第二压感层53的图形排布方式如图8B所示。 [0148] As shown in FIG. 8A-8B, the embodiment in the present embodiment, the first layer 52 of pressure sensitive graphics arrangement embodiment shown in Figure 8A, the second pressure sensitive layer pattern 53 is arranged in a manner as shown in FIG 8B Fig.

[0149] 由于在相同按压力作用下,压感单元受到相同的应力作用,而压感单元的实际应变的大小与其图案形状、材料性质及所设定的图案朝a、b方向的总长度大小有关。 [0149] Since the pressing force under the action of the same, the pressure sensing unit subject to the same stress, strain pressure sensing the actual size of a unit and its pattern shape, material properties, and set the total length of the pattern toward the size a, b direction related. 因此,除了通过调整压感单元的长轴方向与最大应变方向的角度之外,还可以通过调整第一压感单元521及与其对应设置的第二压感单元531的图案形状,具体如下: Thus, in addition to adjusting the angle of the major axis direction by the pressure sensing means and the maximum strain direction, it may also be adjusted by the first pressure-sensing unit 521 and its corresponding set of pattern shape of the second pressure-sensing unit 531, as follows:

[0150] 将第一压感单元521及第二压感单元531的图案形状设置为不相同,且图案形状应满足以下关系: [0150] The first pressure-sensing unit 521 and the second pressure-sensing unit 531 is set to be different pattern shape, and the shape of the pattern should satisfy the following relation:

[0151] L_ha/Liib> LiWiLTb [0151] L_ha / Liib> LiWiLTb

[0152] 其中,Lila表示为第一压感单元521的朝a方向的总长度,Lilb表示为第一压感单元521的朝b方向的总长度,Lfa表示为第二压感单元531的朝a方向的总长度,Lrb表示为第二压感单元531的朝b方向的总长度。 [0152] wherein, Lila expressed as a first pressure sensing unit 521 toward a direction of the total length, Lilb b represents the total length towards the direction of the first pressure sensing unit 521, Lfa denoted as a second pressure sensing unit 531 toward the the total length of a direction, Lrb b represents the total length towards the direction of the second pressure sensing unit 531.

[0153] 通过调整第一压感单元521与第二压感单元531之间朝a方向的总长度与朝b方向的总长度的比值的关系,从而使第一压感单元521的应变相较于第二压感单元531更集中于一个方向上,从而获得更大的应变量。 [0153] By adjusting between the first and the second pressure-sensing unit 521 sensing the pressure unit 531 toward a relationship between the ratio of the total length of the direction toward the total length of the direction b, so that the first strain of the pressure sensing unit 521 compared a second pressure sensing unit 531 is more concentrated in one direction, so as to obtain a greater strain.

[0154] 结合上述两种调整方式,当第一压感单元521的应变与第二压感单元531的应变同为负应变时,可以获得更大的应变差Δ ε。 [0154] combination of the two adjustment mode, when the strain sensing unit 521 of the first press and the second press strain sensing unit 531 with the negative strain, the strain can be obtained a larger difference Δ ε.

[0155] 如W处所示,为本发明第五实施例压力感测输入模块50的第三变形实施例:当第一压感单元521的应变与第二压感单元531的应变同为正应变,为了使第一压感单元521与第二压感单元531之间的应变差△ ε更大,需要使第一压感单元521的应变量绝对值较小,而使第二压感单元531的应变量绝对值较大,如此,两者的应变差△ ε较大。 [0155] As shown at W, according to a third modified embodiment of the pressure sensing input module 50 a fifth embodiment of invention embodiments Example: When a strained first pressure sensing unit 521 and the second pressure sensing unit 531 is the same positive strain, in order to make more strain sensing a first pressure difference △ between the unit 521 and the second pressure sensing unit 531 ε, it is necessary to first pressure-sensing unit 521 is smaller absolute value of strain, the second pressure sensing means 531 is a large absolute value of strain, such strain difference △ ε between the two larger.

[0156] 本变形实施例与上述第二变形实施例的区别在于: [0156] difference between the second embodiment and the modified embodiment of the present modification comprising:

[0157] (—)第一压感单元521的长轴方向与其所在区域的最大应变方向的夹角的角度al 优选为45°-90°,还可为70°-90°,还可进一步为80°-90°,最优为90° (即第一压感单元521的长轴方向与其所在区域的最大应变方向垂直设置);而第二压感单元531的长轴方向与其所在区域的最大应变方向的夹角的角度a2则优选为0°-45°,还可为0°-20°,还可进一步为(Γ-ΐΟ%最优为0° (即第二压感单元531 的长轴方向分别与其所在区域的最大应变方向平行设置)。在本实施例中,第一压感层52的图形排布方式如图8Β所示,而第二压感层53的图形排布方式如图8Α所示。 [0157] (-) direction of angle of maximum strain the longitudinal direction of the first pressure-sensing unit 521 thereto al Area angle is preferably 45 ° -90 °, may also be a 70 ° -90 °, may further be 80 ° -90 °, and optimally 90 ° (i.e., the major axis direction of the first pressure-sensing unit 521 is disposed perpendicularly to its direction of the area where the largest strain); and the axial direction of the maximum of the second pressure-sensing unit 531 area of ​​its strain direction angle is an angle a2 is preferably 0 ° -45 °, may also be 0 ° -20 °, may further be (Γ-ΐΟ% and optimally 0 ° (i.e., the pressure sensing unit 531 of the second length maximum strain and the axial direction are disposed parallel thereto area) in the present embodiment, the first layer 52 of pressure sensitive arrangement pattern shown in FIG 8Β embodiment shown, the second pressure sensitive layer pattern 53 is arranged in a manner such as 8Α shown in FIG.

[0158] (二)第一压感单元521及第二压感单元531的图案形状设置为不相同,且图案形状应满足以下关系: [0158] (b) a first pressure-sensing unit 521 and the second pressure-sensing unit 531 is set to be different pattern shape, and the shape of the pattern should satisfy the following relation:

[0159] Liia/Liib < Ll^a/LTb [0159] Liia / Liib <Ll ^ a / LTb

[0160] 其中,Lila表示为第一压感单元521的朝a方向的总长度,Lilb表示为第一压感单元521的朝b方向的总长度,Lfa表示为第二压感单元531的朝a方向的总长度,Lrb表示为第二压感单元531的朝b方向的总长度。 [0160] wherein, Lila expressed as a first pressure sensing unit 521 toward a direction of the total length, Lilb b represents the total length towards the direction of the first pressure sensing unit 521, Lfa denoted as a second pressure sensing unit 531 toward the the total length of a direction, Lrb b represents the total length towards the direction of the second pressure sensing unit 531.

[0161] 其它内容与上述第二变形实施例相同,在此不再赘述。 Same as [0161] Other modified content to the second embodiment, which is not repeated herein. 结合上述两种调整方式,当第一压感单元521的应变与第二压感单元531的应变同为正应变时,可以获得更大的应变差Δ ε〇 Combination of the two adjustment mode, when the first pressure-sensing unit 521 strain and the strain in the second pressure sensing unit 531 is the same as the normal strain, the strain may be given greater difference Δ ε〇

[0162] 与现有技术相比,本发明所提供的压力感测输入模块10 (40或50)或压力感测输入装置20至少具有如下的优点: [0162] Compared with the prior art, a pressure sensing input module of the present invention provides 10 (40 or 50) or pressure sensing means 20 having an input of at least the following advantages:

[0163] 1、本发明提供了一种具有温度补偿功能的压力感测输入模块10,其包括设置在基板11上下表面的第一压感单元121及第二压感单元131,第一压感单元121与第二压感单元131对应设置且材料相同,至少一第一压感单元121及与其对应设置的第二压感单元131,与外设的两个参考电阻(电阻Ra与电阻Rb)构成惠斯通电桥。 [0163] 1, the present invention provides a pressure sensing input module having a temperature compensation function 10, which comprises a first pressure sensing means disposed in the upper and lower surfaces 11 of the substrate 121 and the second pressure sensing unit 131, a first pressure sensitive unit 121 and the second pressure-sensing unit 131 is provided corresponding to and the same material, at least a first pressure sensing means 121 and its corresponding set of second pressure sensitive unit 131, and the two peripheral reference resistors (resistor Ra and resistor Rb) Wheatstone bridge.

[0164] 本发明中采用惠斯通电桥对按压力值进行检测,其电路结构简单,控制精度高。 [0164] The present invention is employed in a Wheatstone bridge to detect the pressing force value, a simple circuit structure, high control precision. 由于构成第一压感单元121及第二压感单元131的材料相同,因此,第一压感单元121及第二压感单元131的由于温度变化所带来的电阻值的变化满足(RF0+ Δ RFO) ARCO+ Δ RCO) =RFO/ RC0,可见,由于第一压感单元121及第二压感单元131为同种材料且共同构成惠斯通电桥, 在电阻值的测量过程中,温度对第一压感单元121及第二压感单元131的电阻值影响可以忽略,因此本发明所提供的压力感测输入模块10可以完全补偿由于温度引起的电阻值变化。 Since the pressure-sensing unit constituting the first material 121 and a second identical pressure sensing unit 131, therefore, the first pressure-sensing unit 121 and the second sensing unit 131 due to the pressure change meets a resistance value caused by temperature changes in (RF0 + Δ RFO) ARCO + Δ RCO) = RFO / RC0, visible, since the first pressure-sensing unit 121 and the second pressure sensing unit 131 is the same material and constitute a Wheatstone bridge, the resistance value during the measurement, the temperature of the first affect the resistance value of a pressure sensing unit 121 and the second pressure sensing unit 131 can be ignored, the pressure sensing module of the present invention, the input 10 may be provided fully compensate temperature induced resistance change due.

[0165] 2、本发明所提供的压力感测输入装置20中,基板201及贴合层22的杨氏模量、厚度影响压力感测输入装置20的中性面,当中性面位于基板201中时,设置在基板201上下主表面的第一压感单元211与第二压感单元212之间的应变差可以达到最大值。 [0165] 2, the pressure sensing device of the present invention provides an input 20 of the substrate 201, and a Young's modulus of the adhesive layer 22, thickness on the neutral surface of the pressure sensing input device 20, the neutral plane of the substrate 201 when disposed in the first pressure-sensing unit 201 of the upper and lower main surfaces of the substrate 211 and the strain between the second pressure sensing unit 212 can be maximized. 因此,将基板201 的杨氏模量设置为大于贴合层22的杨氏模量至少一个数量级前提下:(1)将贴合层22的杨氏模量控制在100_3000MPa的范围内有利于增大上述应变差Δ ε ; (2)将贴合层22的厚度限定在25-125μπι范围内时,应变差△ ε将随着贴合层22厚度的减小而呈增大趋势;(3)将基板201的厚度限定在50-450μπι范围内时,应变差八£将随着基板201厚度的增大而呈增大趋势。 Thus, the Young's modulus of the substrate 201 is set larger than the Young's modulus of the adhesive layer 22 is at least one order of magnitude under the conditions: (1) The Young's modulus of the adhesive layer 22 is controlled within a range conducive to increasing the 100_3000MPa big difference between the strain Δ ε; (2) the bonding layer 22 has a thickness in the range defined 25-125μπι, the strain difference △ ε paste as reducing the thickness of the seal layer 22 tended to increase; (3) when the thickness of the substrate 201 is defined in the range 50-450μπι, the difference in strain eight £ 201 increases as the thickness of the substrate tended to increase. 因此,通过调整压力感测输入装置20的基板201及贴合层22的杨氏模量及其厚度,即可增大基板201上下表面的压感单元的应变差异,从而使压力大小检测更加精准,按压力度检测更加灵敏。 Therefore, by adjusting the pressure sensing means sense input 20 of the substrate 201 and the bonding layer 22 has a thickness and Young's modulus is, to increase the pressure differential strain sensing unit 201 of the upper and lower surfaces of the substrate, so that more accurate detection of pressure , pressing strength detected more sensitive.

[0166] 3、本发明所提供的压力感测输入模块40中,第一压感单元421与第二压感单元为具有长轴方向和短轴方向,且长轴方向的总线长大于短轴方向的总线长的图案设计。 [0166] 3, the pressure sensing module of the present invention provides an input 40 of the first pressure-sensing unit 421 and the second pressure sensing means having a long axis direction and short axis direction, and the longitudinal direction of the bus is longer than the minor axis bus length direction pattern design. 在本发明中还进一步对第一压感单元421与第二压感单元的图案形状包括椭圆绕线状、折线状、 曲线状、等长多段串联线状、不等长多段串联线状、回字型线状等形状。 In the present invention, the pattern shape is further press the first sensing unit 421 and the second pressure sensing means comprises a wire-shaped oval, polygonal line, a curved shape, as long as the multistage linear series, unequal multistage linear series, back shaped linear shape. 当手指按压(点按压)引起第一压感单元421或第二压感单元产生形变时,第一压感单元421或第二压感单元由于长轴a方向的总长度与短轴b方向的总长度不同,其a方向与b方向的应变也不同,因此可以有效增大电阻值变化效果,进一步使第一压感层或第二压感层对压力的响应更精准更灵敏。 When the finger is pressed (the pressing point) the pressure sensing unit 421 causes the first or the second pressure-sensing unit generates a strain at the first pressure-sensing unit 421 or the second pressure sensing unit since the total length of the major axis to the minor axis direction, a direction b of different overall lengths, which is a direction different from the direction b of strain, and therefore can effectively increase the effect of change in resistance value, the first further layer of pressure sensitive or pressure sensitive layer in response to a second pressure of more accurate and more sensitive.

[0167] 4、本发明所提供的压力感测输入模块50中,为了达到上述第一压感单元521的应变与第二压感单元531的应变之间的差值可以达到较大值,从而提高压力感测输入模块50 的压力侦测灵敏度,除了通过调整第一压感单元521及第二压感单元531的图案形状,还可以通过调整第一压感单元521及第二压感单元531的排布方式,从而增大或减小第一压感单元521及第二压感单元531的应变量。 [0167] 4, a pressure sensing input module of the present invention provided 50, in order to achieve a difference between the first pressure-sensing strain strain unit 521 and the second pressure sensing unit 531 can reach a large value, whereby improved pressure sensing module 50 input detection sensitivity, in addition to the pattern by adjusting the shape of the first pressure-sensing unit 521 and the second pressure sensing unit 531 may also be adjusted by the first pressure-sensing unit 521 and the second pressure-sensing unit 531 the arranging manner, to increase or decrease the pressure of the first sensing unit 521 and the second pressure-sensing unit 531 to be variable. 其中,当第一压感单元521及第二压感单元531的应变为一正一负时,角度al与角度a2的角度范围为0°_45°,当应变同为负应变时,角度al为0°-45°,而角度a2为45°-90°,或当应变同为正应变时,角度al为45°-90°,而角度a2为0°-45°。 Wherein, when the strain of the first pressure-sensing unit 521 and the second pressure-sensing unit 531 is a positive and negative angle of the angle range of angles al and a2 to 0 ° _45 °, when the same strain is negative strain, as the angle al when 0 ° -45 °, while the angle a2 is 45 ° -90 °, or normal strain when the strain is the same, the angle al is 45 ° -90 °, while the angle a2 is 0 ° -45 °. 此外,为了使第一压感单元521及第二压感单元531之间的应变差Δε较大,还可通过对第一压感单元521及第二压感单元531的图案形状关系进行了限定。 Further, in order that the first pressure-sensing unit 521 and the strain between the second pressure-sensing unit 531 Delta] [epsilon large, also defined by the relationship between the shape pattern of the first pressure-sensing unit 521 and the second pressure-sensing unit 531 . 上述条件的限制都可使第一压感单元521及第二压感单元531的应变变化值最大。 Limiting the foregoing conditions can make the first pressure-sensing unit 521 strain change value and the second pressure sensing unit 531 is a maximum. 第一压感单元521在受到按压作用力之后,在朝a方向上的应变量大于朝b方向上的应变量,如此,有利于施加在第一压感单元521及第二压感单元531上的按压力所产生的应变可以集中在一个方向上体现,当这个应变集中的方向与该区域由于按压作用力而产生的最大应变方向一致时,可以使第一压感单元521及第二压感单元531的应变差Δε更加,从而更精准地体现按压力度的大小、提高压力侦测的灵敏度。 A first pressure-sensing unit 521 after being subjected to the pressing force toward a strain in the direction is larger than the strain in the direction of B, thus, it facilitates the application of the first pressure-sensing unit 521 and the second pressure-sensing unit 531 the pressing force generated by the strain can be concentrated on a reflected direction, when the concentration of strain in the direction coincides with the direction of maximum strain in the region of the pressing force is generated, it can be the first pressure-sensing unit 521 and the second pressure-sensing Δε is strain difference unit 531 more, thus more accurately reflect the size of the pressing strength, increasing the pressure detection sensitivity.

[0168] 5、本发明中的压力感测输入模块10、40和50及压力感测输入装置20中,均采用电阻式压力感测,其通过压感单元内部的形状改变引起相应的阻值变化,从而根据阻值变化产生的位置和变化量的大小来判断按压点位置和按压力量大小,利用同一压感单元既进行位置检测(平面二维)又进行力量检测(第三维度)的计算,实现三维度的同时检测。 [0168] 5, in the present invention, a pressure sensing input modules 10, 40 and 50 and a pressure sensing input device 20, are made of a resistive pressure sensing, the resistance of which causes the corresponding shape of the internal pressure by changing the sensing unit change, thereby determining the position of the pressing point and the pressing force according to the position and size of the size change amount of the resistance changes produced by the same pressure-sensing unit detects both the position (two-dimensional plane) and for detecting the power (the third dimension) is calculated , the simultaneous detection of three-dimensional.

[0169] 以上仅为本发明的较佳实施例而已,并不用以限制本发明,凡在本发明的原则之内所作的任何修改,等同替换和改进等均应包含在本发明的保护范围之内。 [0169] The above description is only preferred embodiments of the present invention but are not intended to limit the present invention, any modifications made within the principles of the present invention, equivalent substitutions and improvements should be included in the scope of the present invention Inside.

Claims (10)

1. 一种压力感测输入模块,其通过贴合层与各模组粘接,其特征在于:其包括一基板及分别设置在该基板上下表面的一第一压感层、一第二压感层,所述第一压感层包括至少一个第一压感单元,所述第二压感层包括至少一个第二压感单元,所述第一压感单元与所述第二压感单元一一对应设置且材料相同,至少一第一压感单元与其对应设置的第二压感单元构成惠斯通电桥的其中两个电阻,其用于检测一按压力度大小,同时补偿所述压力感测输入模块由于温度引起的电阻值变化;其中,所述贴合层设置在所述第一压感层、第二压感层与其他模组之间,所述贴合层的厚度为25-125μπι,所述基板的厚度为50-450μπι。 1. A pressure sensing input module, each module with an adhesive, wherein the bonding layer by: comprising a substrate and a second pressure are provided a first pressure sensitive layer of the upper and lower surfaces of the substrate, sensitive layer, said first layer of pressure sensitive pressure sensitive comprises at least one first unit, the second pressure sensitive layer comprises at least one second pressure sensing means, said first pressure sensing unit and the second pressure sensing means correspondence setting and the same material, at least a second first pressure sensing means sensing the pressure unit provided corresponding Wheatstone bridge in which two resistors, for detecting a size of the pressing strength, while compensating the pressure sensing Since the input module measurement value of the resistance change due to temperature; wherein the bonding layer is disposed on the first pressure sensitive layer, between the second layer and another pressure sensing module, the thickness of the seal layer is attached 25 125μπι, thickness of the substrate is 50-450μπι.
2. 如权利要求1所述的压力感测输入模块,其特征在于:所述压力感测输入模块进一步包括第一参考电阻和第二参考电阻,与所述至少一第一压感单元及对应设置的第二压感单元构成惠斯通电桥。 2. The pressure sensing input module according to claim 1, wherein: said pressure sensing input module further comprises a first reference resistor and a second reference resistor, and at least one of said first pressure sensing means and the corresponding the second pressure sensing means disposed constituting the Wheatstone bridge.
3. 如权利要求2所述的压力感测输入模块,其特征在于:所述构成惠斯通电桥的方式为所述第一压感单元与所述第一参考电阻串联,所述对应设置的第二压感单元与所述第二参考电阻串联。 3. The pressure sensing input module according to claim 2, wherein: said Wheatstone bridge configuration of a first embodiment of the pressure sensing unit and the first reference resistor connected in series, corresponding to the set the second pressure sensing unit and the second reference resistor in series.
4. 如权利要求2所述的压力感测输入模块,其特征在于:所述构成惠斯通电桥的方式为所述第一压感单元与所述对应设置的第二压感单元串联,所述第一参考电阻与所述第二参考电阻串联。 4. The pressure sensing input module according to claim 2, wherein: said Wheatstone bridge configured manner as the first pressure sensing means disposed corresponding to the second pressure sensing means connected in series, the said first reference resistor and the second reference resistor in series.
5. 如权利要求1所述的压力感测输入模块,其特征在于:所述第一压感单元阵列设置于所述基板上表面,所述第二压感单元与所述第一压感单元对应设置于所述基板下表面,则所述压力感测输入模块可同时检测三维信号。 5. The pressure sensing input module according to claim 1, wherein: said first pressure-sensing cell array provided on the substrate surface, the second pressure sensing means and the first pressure-sensing unit disposed on the substrate corresponding to the lower surface, the pressure sensing modules can simultaneously detect three-dimensional input signal.
6. 如权利要求1所述的压力感测输入模块,其特征在于:所述第一压感单元与所述第二压感单元均由一压阻材料以一导线的形式弯折而成。 6. The pressure sensing input module according to claim 1, wherein: said first pressure sensing unit and the second unit by a pressure sensing piezoresistive material formed in the form of a bent wire.
7. 如权利要求6所述的压力感测输入模块,其特征在于:所述第一压感单元与所述第二压感单元的形状为非旋转对称性图形。 7. The pressure sensing input module according to claim 6, wherein: said first pressure sensing means and the shape of the second pressure sensing means is a non-rotationally symmetrical pattern.
8. 如权利要求7所述的压力感测输入模块,其特征在于:所述第一压感单元和/或所述第二压感单元的图案设计为朝一方向的导线总长度最大,该方向为所述第一压感单元和/ 或所述第二压感单元的a方向,所述第一压感单元与所述第二压感单元的图案朝一方向的导线总长度最小,该方向为b方向,其中,所述a方向与所述b方向垂直。 The direction pattern and / or the second pressure sensing means sensing the first pressure unit designed for the maximum total length of wire in one direction, and: as claimed in pressure sensing input module according to claim 7, characterized in that said first pressure sensing means and / or a direction of the second pressure sensing means, pressure sensing pattern of the first unit and the second pressure sensing means in one direction of the minimum total length of the wire, the direction b direction, wherein the direction of a perpendicular to the b direction.
9. 如权利要求8所述的压力感测输入模块,其特征在于:所述第一压感单元与所述第二压感单元的图案形状包括椭圆绕线状、折线状、曲线状、等长多段串联线状、不等长多段串联线状或回字型线状的其中一种或其组合。 9. The pressure sensing input module according to claim 8, wherein: said first pressure sensing means and the patterned shape of the second pressure sensing means comprises a wire-shaped oval, polygonal line, curve, etc. long linear multistage series, unequal linear series or multistage linear Hollow wherein one or a combination.
10. 如权利要求9所述的压力感测输入模块,其特征在于:所述第一压感单元与所述对应设置的第二压感单元的形状不相同。 A pressure sensing input module as claimed in claim 9, wherein: shape of the first pressure sensing means disposed corresponding to the second pressure sensing means are not the same.
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