TW201246023A - Touch pressure sensing module - Google Patents

Abstract

The present invention relates to a touch pressure sensing module, which comprises a main body and a plurality of force sensors. The main body has a substrate with its periphery positioned with the plurality of force sensors. The force sensors are electrically connected to a control unit. When an object touches a sensing area on a surface of the substrate, a touch point pressed on the substrate causes the peripheral force sensors to generate an electronic signal value variation, and the control unit performs a detection to determine a coordinate location, a force strength, a force variation rate and a moving direction variation of the touch point, so as to switch to different sensing modes according to a type of the object and the strength of the touch point, and to correct an offset value of the location of the touch point according to different purposes and usage states, thereby enhancing the overall accuracy and stability of detecting the strength and coordinate location of the touch point of the object.

Description

201246023, invention description: [Technical Field] The present invention provides a touch-sensing module, in particular, a plurality of force sensors are positioned around a substrate of a body, and the control unit utilizes a touch point. Pressing on the substrate causes the change of the electronic signal value generated by the force sensor to detect the coordinate position of the touch point, and improves the accuracy and stability of the overall detection of the touch point of the object. [Prior Art] According to the 'new development of today's F-subsidiary technology, and with the rapid expansion of network communication technology', people's life, learning, education and entertainment are brought to another new field of salary. Therefore, the computer has become Tools that are indispensable for individuals and businesses, and can use the operating system and the document management system to process documents, account transactions, send messages on the Internet, or send and receive emails. However, desktop computers must be equipped with keyboards. The mouse can be operated in a step-by-step manner, and it is not conducive to carrying restrictions on the actual formation. It is based on the 'developer's ability to directly touch the touch-type camp to control the electric branch, such as smart money machine, tablet computer, personal digital firefly: at the same time? for the input and display interface' use Can be directly in the touch-sensitive point selection operation or cursor control, mobile and object drag-and-touch cheats, 201246023 according to the application of the financial-A-technical segmentation, in small-sized smart phones, individuals The majority of the digital coffee _ control records are based on the resistance type _ panel, while the bribe technology period is the use of projected capacitive touch panel, and in the large size silk shirt media guide, query system The new collection of _ red is mainly based on infrared, surface acoustic wave or surface capacitive touch panels. Furthermore, the 'resistive touch panel is mainly made up of the upper and lower layers of the thin film conductive layer, so that the surface can be controlled by the finger. The upper and lower electrodes are turned on after the surface of the thin film conductive layer is recessed. Then, by the voltage change on the controller side, the touch age is calculated, and the __ conductive layer is made of a soft material, the material is touched, the life is short, and the transmittance is not good. (4) The wire has a power consumption increase _ question; [Capacitive touch panel is mainly the capacitance change generated by the cooperation between the paste-like flip electrode and the human body, and the contact point is set by the material current. Because the finger _ difficult to sense 'and almost no wear and tear with the capacitive surface, it is much better than the resistive touch panel in terms of transmittance, durability, reaction speed, etc., and has multi-touch capability. Advantages, but at present, the capacitive surface oil can not make the transconductor into the side control, because the static money generated by the finger touches the fairy, because the image of the crane is serious, and the input or control in the small and medium size control screen Poor performance at the target, as well as external money and magnetic influence Village can produce material loss issue, but in this industry, they have to be re-designed to be effectively addressed. 201246023 [Summary of the Invention] Therefore, the inventor has invented the invention of such a touch-sensing module based on the _ and the lack of the control panel, and the collection of relevant materials through multi-party evaluation and consideration, and continuous trial and modification. The patent was born. The main purpose of the present invention is to locate a complex force sensor at the base of the body, and the power sensor is electrically connected to the control unit, and the object touches the sensing area on the surface of the substrate. At the touch point of the object, the electronic signal value generated by the peripheral force sense is applied to the substrate, and the output is converted to the corresponding digital position by the control unit, and the detection is performed by the early 7G. The position of the coordinates, the size of the force, the rate of change of the force, and the change of the direction of the change, and can be read into the non-induction mode according to the different paths and the state of the object, and the size of the object and the touch, thereby increasing the place and use of the application. ·, and achieve a wide range of effects of practical and applicable. The secondary object of the present invention is that in the sensing area on the substrate, the temple can use the control unit to calculate the value of the value of the complex force sensor or the amount of change _ and the difficulty to the length of each power sense is The inverse relationship relationship 'or the plane two-dimensional coordinate position of the touch point of the moment and the base plate can be a flat tempered glass or hard (four) plate to improve the transmittance and hardness of the existing resistive touch panel. High, *Electrical and capacitive touch panels have low yield and high cost, and can not cause problems such as time conductors entering and controlling, and being susceptible to external magnetic inductance. 201246023 Another object of the present invention is to pre-form S1] a plurality of preset coordinate points in the sensing area on the surface of the substrate, and touch the object on each of the preset coordinate points by the control unit. Pressing on the substrate causes each force sensor to generate a proportional relationship of numerical value proportionality or numerical change amount to establish a database, and when the object touches the sensation of the substrate, the preset coordinate point can be utilized by the control unit. Each force sensor detects the proportional relationship between the values and the database to compare the lateral position, and can also increase the resolution of the coordinate position by the internal difference method or the heterodyne method. The re-purpose of the present invention is that the control element can be pressed against the position of the coordinate point of the substrate _ zone axis of the body, and is calculated with the amount of force component detected by the plurality of force sensors. The proportion of the value after the period is the change value, thereby judging the actual known preset coordinate point position, the offset value of the ten-calculated position and the -be-stock position, and the position of the preset coordinate point can be set. As the coordinate point of the kiL scale corrects the offset value of the position of the touch point at the time, and improves the accuracy of the overall touch point side of the object. Further, the present invention is directed to a substrate having a rectangular shape or a circular shape or a polygonal opening/shape and having at least two force sensors positioned at the periphery of the substrate and the substrate can be resistive. Capacitive, f-sensing, electromagnetic, table ^ sonic or infrared L control panel, and by means of the control element and the complex force 1 sensor, the force and resultant force in each direction, the rate of change of force, and the movement f are measured. Adding resistance, capacitance, inductance, electromagnetic, surface acoustic wave m to the surface of the ^ _ surface _ Wei. , 6 201246023 [Embodiment] The technical means of riding the above-mentioned eyes, the technical means of the present invention, and the simplification of the present invention are as follows. The actual description of its features and functions is shown in the first, first, second and fourth figures. ) and the schematic diagram of the first mode of operation (two ± ), from the figure can clearly see that this includes the body! And the plurality of force sensing, the substrate 11 has a substrate 11, and the substrate 11 can be a flat tempered glass, a plate or other light-transmissive, opaque thin plate body, and the base (4) has a peripheral position The inductive object is touched on the surface of the substrate ii by the contact force, and the electronic enthalpy change is performed. The power sensor 2 is electrically connected to the electronic rib circuit board (not shown). The upper control unit causes the control unit to convert the electronic credit into a corresponding digital signal, and then can detect and determine the coordinate position, the force size, the power change rate, and the moving direction change of the touch point 3. Furthermore, the force sensor 2 described above is optimally implemented as a multilayer = thln fiim)

A grid-like force-sensitive resistor (FQ ree — sens . ^ 1 G istance 'FSR) paint layer and the grid of the force-sensitive resist paint layer (FSR 1nk) forms a force or pressure at each intersection. The touch point 3, but in the actual domain, is not limited to this, 201246023 can also use pressure sensors (Pressu, potentiometer, inductive, magnetoresistive, strain gauge, pneumatic force sensing: Or ά various types of force $ 感湘2, which only need to provide the force sensor 2 under the stress of the body 1 _ under the pressure signal effect of the piezoresistive effect and change the electronic signal value change into a phase by the control unit 7 〇 The corresponding digital signal calculates the strength of the marriage or the pressure reading. When the power of the domain power controller 2 increases, the electronic city health reading is reduced, but this part of the electronic fiber for how the control unit senses the complex force The value of the conversion is measured by the strength of the force or the change of the pressure, etc., which is a standard of the prior art, and therefore, the invention does not affect the scope of the invention, and the touch-sensitive module of the present invention is applicable. Smart phone, tablet Brain, personal digital training, amusement, interactive multi-intelligence, query system or other electronic devices, can be integrated into the electronic device (not shown) and electronic The control unit on the internal circuit board of the device forms an electrical connection, and an object (such as a human finger, a conductor of a capacitive stylus, or a _ stick, a fresh, an eraser, a material of a side card, etc.) touches the substrate 1 1 In the sensing area on the surface, the touch point 3 of the object can be applied to the substrate 使 to output the electronic test change generated by the peripheral force sensing H 2 to the control unit. It becomes a corresponding digital signal, and the control unit calculates the magnitude or change relationship of the complex force sensing H 2 and the touch point 3 to each, and the distance of the 201246023 power sensor 2 becomes an inverse _ system. Or determine the position of the touch point 3 by the moment balance relationship, as shown in the second figure, the magnitude or amount of change detected by the plurality of force sensors 2 (eg, ρχ+,

The relationship between Px-) and the length (such as Lx+, Lx —) horizontal axis (χ axis) direction is: p X-/LX + = P XI-/L χ L x-/L χ + = ρ χ+/ρ χ L χ-氺ρ χ —= LLx — *Ρχ —)— x +氺Ρ χ + Y-axis) The positional relationship is: or the moment balance relationship (Lx + *px + ) = 〇, and the vertical axis (

Py-/Ly+-Py+/Ly_. Ly-/Ly+=py+/Py—;

Ly *Py—=Ly+*Py+; or the moment balance relationship (Ly~*Py —) — (Ly + *Py + )= 0 ' can be calculated by the calculation function built into the control unit Touch the plane of the point 3, the position of the center of the seat' or as shown in the third figure, the magnitude or amount of force (such as Ρχ+, Ρχ-, y+, P y~) of the power sensor 2 The relationship between the length (such as x, γ) and the origin of the right-angled coordinate center is:

X

Lx ~2

Lx 1 +

Px +

Y and the coordinates of the coordinates are ( 2

Ly

Py

Py- Γ Θ 1 + 201246023 r *—— 2 Lx Lx 2 ΡχΖ + ίι Ly _ 2 1+~ j L Py-\ When Px + >Px~~

Ly _ Ly — 2 Ϊ75Ξ 〇 — tan" :_py~).

Lx Lx -------- 2 ut

Px — when Px + <Px -, r== ^ = 7T + tan

— — — — I---- Lx Lx 2 ΡχΧ Ten hi Ly z 1 + ££+ . Px, 2 i + Py+ JL Py-\ y~ Θ 2 When ΡΧ + = Ρχ -, and Py+> p τ — Ly Ly ^ r—:~^^ ～90〇; when Ρ χ + = Ρ χ—, and Ρ y+ <ρ yr ι +

Ly Ly -7.---- > £y± 2 Py — time Θ 3π 2 7 0°; and can be converted into ke input material (such as according to formula, nucleus _ system __, __= The screen is located in the first mode of operation of the present invention. The details of the operation are as follows: 201246023 / 5 /, shown in the drawings, which are respectively a top view of the preferred embodiment of the present invention and another preferred The top view of the embodiment, as can be clearly seen from the towel, the object of the present invention is located on the substrate 11_region__ of the body 1 at coordinates A (such as ALx~~, ALx+, ALy-, ALy+). (4) No), and the proportional relationship between the values obtained by dividing the magnitude or magnitude of the force (such as APx +, APx -, APy+, AP y) measured by the complex force sensor is: APX + /A Lx-; AP x —/AL χ + ; APy+/ALy—; or AP y _/AL· y + , which can be separated by the above-mentioned transport function calculation unit The value of the proportional relationship change value, thereby judging the actual known preset coordinate point A position and the calculated value position or the database position offset ' can be used as the correction of the position of the preset coordinate point A Benchmark The coordinate point ' can be used to correct the offset value of the position of the touch point 3 according to various uses and states of use. The substrate 1 1 of the body 1 can be in a rectangular shape and positioned at least two at the periphery of the substrate 1 1 . The force sensor 2 (shown in the first figure) is only a preferred implementation state, but in practical applications, it is not limited thereto, and the substrate 11 may also have a circular shape (as shown in the fifth figure). Structure, polygonal or other equivalent shape structure, and located at the periphery of the substrate 1 1 is positioned with eight power sensors 2, and can be increased according to requirements or design or 11 201246023 Reduced power detector 2 The more the number of settings, the more the house can be suppressed, _'in general, the power is reduced by 2, the force HU is set to detect the coordinate position of the touch point 3, the force and the force π change rate, £, The change of the moving direction will also be more accurate; the substrate 1 1 of the main body 1 (as shown in the flute / picture) can be a touch panel (T〇Mh Pad) or a light touch curtain, etc., and the touch Control panel can also be divided into resistive, capacitive, and Thunderbolt Electromagnetic, surface acoustic wave or optical (infrared) touch panel, etc. For example, the substrate 11 of the body 1 preferably has a horizontal axis (X-axis) direction tLx which can be a follower and a sag (Y (6) direction length...〇〇 If the object touches the sensing area on the substrate 11, the magnitude or amount of force detected by the plurality of force sensors 2 at the periphery of the substrate 11 is Px+=0.6, Px-U, respectively.

Py+=0 · 8 ' Py —=0·2 ’

Lx+ -f L χ-= 3 0 〇mm#L X-/L x + = /ρχ , Q.6/0.3=2, and find Lx+2 〇〇mm, Lx--Ο nr\ ^ . 2 0 〇mm, from which it can be seen that the distance between the touch point of the object 3 and the PX + force sensor 2 is 1 ◦◦, the touch point of the object 3 to the distance of the Px-force sensor 2 is 2 〇〇 mm, and then according to

Ly = Ly+ + Ly-=2〇〇m_Ly—/Ly + = y+/Py — 二〇· 8/0 . 2 = 4, and find Ly + = 4 Ο ιϊι m ' L y — = , 16 Omm, It can be seen that the touch point of the object is 3 to y. The distance between the sensor 2 is 4 Qmm, and the touch point of the object is 3 to? s 12 201246023 y—The distance of the force sensor 2 is 丄6 〇mm; 5 〇, y =^ 丨十" τ-, Ρχ- 2 uPy· 6 0 knows

The Py-body's touch point 3 is at a right angle (5 n ~ v ο U, 60), and because Ρ X + > Ρ X ~, the polar coordinate position (r, 0) is r

Lx τ

Lx

Ly 2

Ly 1 + ^J: Py — 78 1 + Px + 7x^ Θ — tan* / \ Ly -Ly 2 \ i+Py + py~) / \ Lx Lx 2 l+Px + V Ρχ- 5 0. 'borrow On the top, the position of the conductor or the non-conductor _ touch point 3 can be detected, and the touch point of the human body can be improved to input a small range of point targets (such as clicking the phone number on the soft keyboard or inputting the middle and the English When text, etc.), positional shift, false touch phenomenon, even when there is inductance, magnetic inductance, the problem of 'inductive, capacitive or electromagnetic touch panel failure' and improve its overall object touch The power level sensing function of touch point 3 and the accuracy of coordinate position detection. Please also refer to the first and seventh figures, which are respectively a plan view of the present invention and a schematic diagram of the second operation mode. The towel can be clearly seen, wherein the substrate 1 of the body 1 is pre-simulated in the area. The plurality of preset coordinate points 4 are formed in a dot shape, and the object is touched by the control element on each of the preset coordinate points 4, and the value generated by each of the force sensors 2 is large. 13 201246023 Small The proportional relationship or the proportional relationship of the numerical change is established - the database, if not, where t, u, v, W are the tolerances of each Ρ 、 +, ρ χ ~, py +, Py-force sensor 2 Coefficient or correction parameter, the body touches the ii of the recording board ii _ _ _ preset coordinate point 4,; control the value of the respective strength sensor 2 at the periphery of the substrate ii with the control ___ and data The library performs the _ out position, and the resolution of the coordinate position can be increased by the internal difference method or the heterodyne method, and the plane biaxial position of the touch point 3 can be more accurately resolved. : The second mode of operation. " Table 1 Comparison of the proportional relationship and coordinate position of each force sensor

No. P x+ Power Sensor P X-Power Sensor p y + Power Sensor p y-Strength Sensor

Referring to the second, third, fourth, and seventh diagrams, the present invention is positioned with a plurality of force sensors 2 at the periphery of the substrate 11 for the body, when the object touches the sensing area on the substrate 11, The touch point 3 is applied to the substrate 1 to change the electronic signal value generated by the peripheral force sensor 2, and the coordinate position and strength of the touch point 3 are controlled by the control unit 2012> 14 201246023 And the power & speed and movement direction change are its main features, and can be switched to the first operation mode or the second operation mode according to various uses and usage states, and the magnitude of the force of the object class and the touch point 3 The substrate 1 1 can be a tempered glass, a hard thin plate, a touch panel or other thin plate body that can be light-transmitted and opaque, and can improve the transmittance and hardness of the existing resistive touch panel. Type, capacitive or electromagnetic touch panels, etc. cannot use non-conductor binding touch, positional offset and false touch, and I suffer from the failure of the external inductance and magnetic induction. Not limited to this 'fan He's in the county in the art that the present __, and can easily think of variations or modifications shall be covered in the following case please within the scope of the patent, close to Chen. In summary, the touch-sensing module of the present invention can truly achieve its efficacy and purpose, so the invention of the Japanese-made job is a perfect invention, which is in line with the application requirements of the invention patent, and the application is made according to law. I will give this case an early date to protect the hardships of the Japanese issue. If there are any doubts, please give me a letter, and the inventor will try his best to cooperate with him. 15 201246023 [Simplified description of the drawings] The first figure is a top view of the present invention. The second figure is a schematic diagram (1) of the first mode of operation of the present invention. The third figure is a schematic diagram (2) of the first mode of operation of the present invention. The fourth figure is a schematic diagram (3) of the first mode of operation of the present invention. The fifth drawing is a plan view of a preferred embodiment of the invention. Figure 6 is a plan view of another preferred embodiment of the present invention. The seventh figure is a schematic diagram of the second mode of operation of the present invention. [Main component symbol description] 1. Main body 1 1. Substrate 2. Power sensor 3. Touch point 4. Preset coordinate point 16

Claims (1)

201246023 VII, the scope of application for patents: 1, the type _ sensor module, including the body and the complex force sensor, wherein the body has a - substrate, and the substrate 阙 is more than the financial strength sensor, and by the sense of power · The control unit is electrically connected, and when the object _ touches the sensing area on the surface of the substrate, the touch point of the secret body can be applied to the substrate to reduce the peripheral value of the sub-signal value generated by the peripheral force. The control unit converts to a corresponding digital signal, and the control unit calculates that the magnitude or change relationship of the complex force sensor is inversely proportional to the distance from the touch point to each force sensor, or: The moment balance relationship discriminates the planar two-dimensional coordinate position of the touch point. 2. The touch-sensing module according to the patent application scope, wherein the substrate of the body can be a flat tempered glass, a hard thin plate or other thin plate body which can transmit light or not. 3. The touch-sensing module according to claim 1 of the patent application, the substrate of the towel may be a resistive, capacitive, inductive, electromagnetic, surface acoustic wave or infrared touch panel. 4. The touch-sensing module of claim 1, wherein the force sensing state is a multilayered polymeric film formed with a grid-like force-sensitive resist lacquer layer or a force sensor array. CT, the touch-sensing module according to claim 1, wherein the force t sensor can be (four) type, capacitive type, potentiometer type, inductive type, magnetoresistive type, younger type or air pressure Power sensor. 17 201246023 6 , If you apply for a special plane, the touch-sensing module described in the item = can use the object to press on the substrate in the sensing area of the body = ^ set ' and the power detected by the complex force sensor Or the change amount calculates the proportional relationship change value of the divided value, thereby judging the offset of the actually known preset coordinate point position and the calculated value position, and using the position of the preset coordinate point as the correction The coordinate point of the datum. The seven types of waste sensing modules include a body and a plurality of force sensors, wherein the body is a gossip substrate and a plurality of force sensors are positioned at the periphery of the substrate, and the power connection is controlled by the power sensing. The unit, and the sensing area on the surface of the substrate is pre-planned with a plurality of preset coordinate points in the form of a dot, and the control unit touches the object on the side of each of the set points to sense the substrate. The device generates a proportional relationship between the numerical value proportionality and the numerical change proportional relationship, and when the object touches any preset coordinate point in the sensing area of the substrate, the available control unit can respectively use the respective force sensors. The proportional relationship between the values is compared with the database to detect the planar two-dimensional coordinate position of the touch point. The touch-sensitive sensing module of claim 7, wherein the substrate of the body is a flat tempered glass, a hard thin plate or other thin plate body that is permeable to light and opaque. The touch-sensitive sensing module of claim 7, wherein the substrate of the body is a resistive, capacitive, inductive, electromagnetic, surface acoustic wave or infrared touch panel. The invention relates to a touch-sensing module according to claim 7, wherein the force sensor can form a grid-shaped force-sensitive resist paint layer or a pressure sensor array for a multilayer polymeric film.曰 1. The touch-sensing module described in claim 7 of the patent application, wherein the reading force sensor can be a power-type, a capacitive type, a potentiometer type, an inductive type, a punching type, and a strain gauge type. Power sensor. 2. The touch-sensing module according to claim 7, wherein the reading and the early π are pre-cure point positions of the usable object in the sensing area of the substrate of the body and the sense of power The magnitude of the force on the side of the detector is the change of the proportional relationship of the values after the separation of the leaves, so that the offset of the position of the actual known preset coordinate point and the calculated value is broken. This pre-δ and the coordinate point position are used as coordinate points for the correction reference. 3. For example, if the patented fine 7th handle tank surface group is applied, the unit is the value that can be measured for each force sensor: _ = relationship and data are lightly compared, and then by internal difference The method or heterodyne resolves the planar two-dimensional coordinate position of the touch point. ' 19