TWM258356U - Pressure-sensitive touch panel - Google Patents

Description

M258356 IV. Creative Instructions (1) [Technical Field of New Type] A touch panel that can detect pressure sensitivity, especially a touch panel that can receive pressure-sensitive frequency signals output by electromagnetic induction pens. [Previous technology] The electromagnetic induction pens currently used in pen computers can be divided into piezoelectric and electromagnetic induction according to the pressure-sensitive frequency signal generation method, and according to the signal transmission method, they can be divided into wired and wireless. . The electromagnetic induction pen uses the pen tip displacement when the pen tip is pressed to make the pen's oscillation frequency signal change accordingly (depending on the force). The pressure-sensitive frequency signal usually uses the amount of displacement of the pen tip to change the inductance or capacitance of the pen tool to control generation and acquisition, or use piezoelectric elements to control generation and acquisition. The first figure is a perspective sectional view of a conventional electromagnetic induction pen. The piezoelectric element 2 is installed in the pen tool 1, and the pen core 4 directly bears against the piezoelectric element 2. The front end of the pen has an electromagnetic coil 5 to generate a magnetic field, which is read by the tablet antenna X and Y axes. The board then obtains the (X, Y) position signal of the pen and outputs it. At present, resistive touch panels can be roughly divided into digital touch panels and analog touch panels. The digital touch panel uses a matrix of conductive film electrodes to detect the current value or voltage value conducted by the input to detect the input position. The analog touch panel uses the panel's inherent resistance and electrical connection to detect the input position through the output divided voltage. Please refer to the second figure, which is a perspective view of a conventional touch panel. Among them, the rear substrate 11 and the front substrate 12 respectively have conductor film electrodes 16 and 17 with predetermined inherent resistance values, and are electrically connected to the connection conductors 18 ~ 2. As shown in the second figure, when the P (X, Y) point is pressed, only Apply between the connection conductors 20 and 21 of the front substrate 2

M258356 IV. Creative Instructions (2) ----------- Detect the position of the output voltage division of the X-direction voltage division output terminal 25 by Y voltage ′). The detection voltage is applied only between the connecting conductors 18 and 19 of the rear substrate 1, and the output partial voltage of the Υ-direction voltage-dividing output terminal 26 is detected, thereby detecting the position of ρ (γ). In the above description, the conventional resistive touch panel can only obtain the position signals of the χ and γ axes, and cannot obtain the pressure-sensitive frequency signal of the electromagnetic induction pen wheel, making the resistive touch panel unable to distinguish when the electromagnetic induction pen is depressed. The size of the force, resulting in the font displayed on the display after processing by the computer is not the thickness of the font produced by the size of the force. [New content] In view of this, the purpose of this creation is to provide a touch panel that can detect pressure sensitivity. It uses the inductive antenna loop to receive the pressure-sensitive frequency signal induced by the electromagnetic induction pen touching the panel. Size), and sensed a sense voltage signal. The induced voltage signal is further amplified by the amplifier circuit ^, and the frequency counting circuit calculates and processes the frequency value of the induced voltage signal, which outputs the pressure-sensitive frequency signal generated when the electromagnetic induction pen contacts the panel. Furthermore, a pen-down signal acquisition unit is connected to a touch panel circuit, and a pen-down signal of an electromagnetic induction pen in contact with the touch panel circuit is obtained. : In the description, the pressure-sensing frequency signal output by the frequency counting circuit and the pen-down point signal obtained by the pen-down point signal acquisition unit are transmitted to the microprocessor for arithmetic processing through the analog / digital conversion unit, and then transmitted to the computer to obtain the pen-down The position of the point and the force of the stroke are displayed by the computer application. In another embodiment of this creation, the

Page 7 M258356 The current signal is sent from the pen-down point. Then, the pressure-sensing frequency generated by the induction current has a pen-down electromagnetic induction. The pen-down processor obtained by the frequency counting power performs the coordinate position and indicates the action. A type of pressure-sensing frequency signal that can be detected, and thus smaller. The characters of this electromagnetic induction pen display are based on this invention, which can detect the pressure-sensitive pen point signal g, creation instructions (3) pressure-sensing frequency signals, which are obtained, and the signal is amplified by the electromagnetic induction circuit. When the pen touches the panel on the nose, the control panel circuit in the above description is the signal from the pen drop point. The above-mentioned pen point signal acquisition unit conversion unit sends the application program to the micro to obtain the pen drop point for display. The 5 point signals generated by the creative electromagnetic pen are calculated at the position of the calculation point and the lower panel. [Embodiment] Please refer to the third figure. The original control panel circuit 30, a circle 34, an amplifier electric switching unit 39, and a micro processor coil receive the number and then filter the noise through the amplifier electricity. The retransmission value is an electromagnetic induction unit. The pressure-sensing frequency signals and signals connected to the touch-panel circuit are transmitted by analog / digital, and then transmitted to the computer with the size, and the number is retrieved by the computer circuit 36 and the processor 37. Frequency signal of current signal filter circuit signal. The point signal capture pen touches the point signal output by the road. The touch panel with pressure sensitivity under the calculation process can obtain the number, and the coordinate system of the pen point of the electromagnetic induction pen to the pen point of the electromagnetic induction pen can improve the conventional resistance type. The size of the force when the touch is depressed, resulting in the disadvantage that the body does not have a thickness difference. The touch panel 3 shown as a circuit block in the first embodiment includes: a touch capture unit 3 2, an induction antenna return circuit 3 8, an analog / digital converter

Page 8 M258356 IV. Creation instructions (4) Re-referring to the third figure, the induction antenna loop 3 4 is connected to the touch panel circuit 30, which is used to receive and obtain an electromagnetic induction pen (not labeled) to contact the touch panel. When the circuit 30 is inducted, the pressure-sensitive frequency signal (the magnitude of the force under the pen) is induced, and an induced voltage signal is output inductively. The inductive antenna loop 34 transmits the induced voltage to the amplifier circuit 36 'connected to the inductive antenna loop 34 and performs operational amplification of the inductive voltage signal. Next, the amplified induced voltage signal is transmitted to the frequency counting circuit 38 connected to the amplifier circuit 36. The frequency counting circuit 38 calculates and processes the frequency value of the induced voltage signal. The frequency value is the electromagnetic signal. Pressure-sensing frequency signal generated when a touch pen (not labeled) contacts the touch panel circuit 30. In the above description, the frequency counting circuit 38 transmits the pressure-sensitive frequency signal to the analog / digital conversion unit 39 connected to the frequency counting circuit 38. The analog / digital conversion unit 39 receives the pressure-sensitive frequency signal, and converts the analog pressure-sensitive frequency signal to a digital digital pressure-frequency signal, and outputs it to the microcomputer connected to the analog / digital conversion unit 39. Processor 37. Referring again to the third figure, the pen-down signal acquisition unit 32 is connected to the touch panel circuit 30, which is to obtain an electromagnetic induction pen (not labeled) to contact the touch. When the circuit 30, the touch panel circuit One of the 0 output pen-down signals. Luo, the signal acquisition unit 3 2 is to transmit the pen-down signal to the analog / digital conversion unit 39 connected to the pen-point signal acquisition unit 32. The analog conversion unit 39 receives the pen-down signal and converts the analog pen-down signal to a digital pen-down signal and outputs it to the microprocessor 3 connected to the analog / digital conversion unit 39. 7. The above " Er Mingzhong, the pressure-sensitive frequency signal output by the frequency counting circuit 38 and the pen

M258356

4. Creation instructions (5) Point information, the pen-down point signal obtained by the capture unit 32 is transmitted to the microprocessor 37 for calculation processing through the analog / digital conversion unit 39 and to the computer 6 to obtain the pen-down point. The position of the coordinates and the size of the stroke force are displayed by the application of the computer 6. Please refer to the fourth figure, which is a schematic circuit block diagram of the second embodiment of the present invention. The touch panel 3 that can detect pressure sensitivity in this creation includes: a touch panel circuit 30, a pen-point signal acquisition unit 3 2, a filter circuit 3 5, an amplifier circuit 36, and a frequency counting circuit. 3 8. An analog / digital conversion unit 39 and a microprocessor 37.

Referring again to the fourth figure, the pressure-sensitive frequency signal generated when the electromagnetic induction pen (not labeled) contacts the touch panel circuit 30 is transmitted to the pen-down point signal acquisition unit 32 connected to the touch panel circuit 30. The pen-point signal acquisition unit 32 receives the pressure-sensing frequency signal by its coil, and at the same time, it outputs an induced current signal by electromagnetic induction. The induced current signal is further amplified by the amplifier circuit 36 connected to the pen-point signal manipulation unit 32, and then the noise is filtered out by the filter circuit 35 connected to the amplifier circuit 36, and then connected to the wave circuit 35. The frequency counting circuit 38 calculates a frequency value for processing the induced current signal. This frequency value is the pressure-sensitive frequency signal generated when the electromagnetic induction pen (not labeled) contacts the control panel circuit 30.

Referring again to the fourth figure, the pen-down point signal acquisition unit 32 is connected to the touch panel circuit 30, which is obtained when the electromagnetic induction pen (not labeled) contacts the touch panel ί anti-circuit 3 0, the touch panel Circuit 30 outputs one of the pen-down signal. The pen-down signal acquisition unit 32 is for transmitting the pen-down signal to the analog / digital conversion unit 39 connected to the pen-down signal acquisition unit 32. The

Page 10 M258356

Analog / digital conversion unit 3 9 # Zhuan Panxi- 仏 a々a L i receives the Luo pen point signal, and converts the analogue Luo pen point signal to a number of microprocessors 7 7 . In the above description, the frequency counting of the thunder and politics is only 1 觫 § § Βν-— q〇 ～ ^ The 38 pressure-sensing frequency signal and the pen-writing point signal are obtained by analogy / digital brain 6 Place the pen on the pole into two places: place: Li / Asia communicates to the electricity, ^ / wri The remaining 1IL is set to the size of the down force, and then the display operation is performed by the application of electricity. To use 戌 :: Green Ben ^ as a touch panel that can detect pressure sensitivity,

Although, # I ^ t% induced voltage signal generated by inductive change or 'use the pen point signal green to get the element q 9 Shihong. _ 蛮 野 化 所 塞 4 夜 rt, # + + 32 itself coil magnetic field sense The inductive current signal generated by the 2 is amplified and transmitted == ;! Electromagnetic induction, (not labeled) The frequency signal of the frequency under contact with the touch panel is an electromagnetic induction pen (when not labeled, the two pens (not labeled) are in contact with the touch panel circuit 30 magnetic salt Yongir "Turo" pen-point signal, the pen-down point signal acquisition unit 32 obtains the pen-down point signal of the electricity bill ^ No) and sends it to the analog / digital conversion

=. The digital-bit conversion unit 39 receives the pressure-sensitive frequency signal and the pen-down signal and sends it to the microprocessor 37 for calculation. Microprocessing = Get the coordinate position of the pen-down point and the force of the pen-stroke after processing. The application of -Dianzhi 6 performs the display action. Dan hunting law: Ϊ magnetic Ϊ Ϊ system can improve the conventional resistive touch panel because it does not control the force of the pen when the pen is pressed, resulting in computer processing

M258356

M258356 on page 12 Schematic illustrations Schematic description The first image is a three-dimensional sectional view of a conventional electromagnetic induction pen; the second image is a perspective view of a conventional touch panel structure; the third image is the first embodiment of the creative A schematic diagram of a circuit block; and FIG. 4 is a schematic diagram of a circuit block of the second embodiment of the creation. Description of drawing numbers: 1 pen tool 2 piezoelectric element 4 pen core 5 electromagnetic coil 11 rear substrate 1 2 front substrate 1 6, 1 7 conductive film electrode 1 8, 1 9, 2 0, 2 1 connecting conductor 2 5, 2 6 output terminals This creation: 3 touch panel 30 touch panel circuit 3 2 pen-point signal acquisition unit 3 4 induction antenna loop 3 5 filter circuit 3 6 amplifier circuit 3 7 microprocessor

Page 13 M258356 Simple illustration of the diagram 3 8 Frequency counting circuit 3 9 Analog / digital conversion unit 6 Computer

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Claims (1)

M258356 Touch and write a pen to get the sensitivity signal to amplify the frequency analog signal and frequency signal of the frequency meter. The number signal is slightly different. 5. Patent application scope 1. A touch surface that can detect pressure sensitivity Obtaining the electromagnetic induction pen output panel circuit is a pen-down pen point signal; the point signal acquisition unit obtains the pen-down point signal antenna loop, connection number, and senses the output circuit, connects to the pressure signal, and conducts the circuit, which is connected to the Induced voltage signal, value, used to output the / digital conversion unit of the frequency counting circuit 'series number, and respectively convert the class number to digital output; and a processor, which is connected to the processing and processing of the pen-down point message The rear panel is equipped with an electromagnetic induction pen, and a pressure-sensitive frequency signal is used, including: The contact of the electromagnetic induction pen is used for inputting and connecting to the touch panel circuit, and the touch panel circuit is used to receive the pressure sensitivity. Frequency-inductive voltage signal; the inductive antenna loop receives the amplification processing of the induction; the amplifier circuit receives the amplification processing and calculates and processes the induction The pressure-sensitive frequency signal of the voltage signal; 'connected to the pen-down point signal acquisition order to receive the pen-down point signal of the pen-down point signal and the pressure-sensitive frequency ratio and the pen-down point signal of the pressure-sensitive frequency and the pressure-sensitive frequency. The analog / digital conversion unit receives the signal and the pressure-sensitive frequency signal for transmission to a computer connected to the microprocessor. 2. The touch panel capable of detecting pressure sensitivity as described in item 1 of the scope of patent application, wherein the pen-down signal is a coordinate signal of the X and Y axes. Page 15 M258356 V. Patent application scope 3. As described in the patent application scope item 1, the touch panel capable of detecting pressure sensitivity, the application of the touch panel circuit is a resistive partial pressure touch panel circuit . 4. A touch panel capable of detecting pressure sensitivity is provided with an electromagnetic induction pen for obtaining a pressure-sensitive frequency signal output by the electromagnetic induction pen, including: a touch panel circuit, which penetrates the electromagnetic induction pen The contact is used to output a pen-down signal; a pen-down signal acquisition unit is connected to the touch panel circuit to obtain the pen-down signal and an induced current signal; an amplifier circuit is connected to the pen-down signal The fetching unit receives the induced voltage signal and performs amplification processing; a filter circuit connected to the amplifier circuit receives the amplified induced voltage signal and filters out noise of the induced voltage signal; A frequency counting circuit connected to the filtering circuit, receiving the induced voltage signal after amplification and filtering noise, and calculating and processing the frequency value of the induced voltage signal to output the pressure-sensitive frequency signal; an analogy / The digital conversion unit is connected to the pen-down point signal acquisition unit and the frequency counting circuit, and receives the pen-down point signal and the pressure-sensitive frequency signal. And analogously convert the pen-down point signal and the pressure-sensitive frequency signal to digital output of the pen-down point signal and the pressure-sensitive frequency signal; and a microprocessor connected to the analog / digital conversion unit to receive the Digital signal of the pen-down point and the pressure-sensitive frequency signal Page 16 M258356 V. Application scope The processing of the signal is transmitted to a computer connected to the microprocessor after processing. 5. The touch panel capable of detecting pressure sensitivity as described in item 4 of the scope of patent application, wherein the pen-down signal is a coordinate signal of the X and Y axes. 6. The touch panel capable of detecting pressure sensitivity as described in item 4 of the scope of patent application, wherein the touch panel circuit is a resistor-divided touch panel circuit. Page 17