CN109284030B - High-precision multi-point touch display unit - Google Patents
High-precision multi-point touch display unit Download PDFInfo
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- CN109284030B CN109284030B CN201811484275.1A CN201811484275A CN109284030B CN 109284030 B CN109284030 B CN 109284030B CN 201811484275 A CN201811484275 A CN 201811484275A CN 109284030 B CN109284030 B CN 109284030B
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- 239000002184 metal Substances 0.000 claims abstract description 64
- 230000005284 excitation Effects 0.000 claims abstract description 47
- 239000004973 liquid crystal related substance Substances 0.000 claims abstract description 38
- 230000003750 conditioning effect Effects 0.000 claims abstract description 15
- 238000005070 sampling Methods 0.000 claims abstract description 14
- 238000007405 data analysis Methods 0.000 claims abstract description 12
- 239000002313 adhesive film Substances 0.000 claims abstract description 11
- 230000006698 induction Effects 0.000 claims description 48
- 239000000853 adhesive Substances 0.000 claims description 10
- 230000001070 adhesive effect Effects 0.000 claims description 10
- 238000002955 isolation Methods 0.000 claims description 6
- 239000000284 extract Substances 0.000 claims description 4
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 3
- 238000001914 filtration Methods 0.000 claims description 3
- 239000011521 glass Substances 0.000 claims description 3
- 229920003229 poly(methyl methacrylate) Polymers 0.000 claims description 2
- 239000004417 polycarbonate Substances 0.000 claims description 2
- 229920000515 polycarbonate Polymers 0.000 claims description 2
- 239000004926 polymethyl methacrylate Substances 0.000 claims description 2
- 238000000605 extraction Methods 0.000 abstract 1
- 238000006243 chemical reaction Methods 0.000 description 4
- 238000004806 packaging method and process Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 239000012943 hotmelt Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000010356 wave oscillation Effects 0.000 description 1
Classifications
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input 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
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0412—Digitisers structurally integrated in a display
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input 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
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
- G06F3/0446—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Position Input By Displaying (AREA)
Abstract
The invention discloses a high-precision multi-touch display unit, which comprises a panel layer, a touch sensing layer and a liquid crystal panel layer, wherein the touch sensing layer is in contact connection with the surface of the panel layer, the liquid crystal panel layer is positioned on one side of the touch sensing layer opposite to the panel layer, the touch sensing layer comprises a base film, a plurality of driving metal wires and sensing metal wires positioned on the base film, the tail ends of the driving metal wires and the sensing metal wires are connected with a controller, and the controller comprises: the touch control device comprises a power supply module, an excitation circuit, a first channel array change-over switch, a second channel array change-over switch, a signal conditioning circuit, a clock synchronization circuit, an AD sampling circuit, a data analysis and processing module, and a touch control information extraction and position and time combination module. The touch control unit has the advantages that the thickness is reduced, the user experience is better, the adhesive film layer also has a buffer function, the impact resistance of the touch control unit is enhanced, and the structural stability and the service life of the touch control unit are improved.
Description
Technical Field
The invention relates to a high-precision multi-touch display unit, and belongs to the technical field of modern education equipment and touch control.
Background
With the technological change, touch technologies are commonly used in life, such as cash dispensers, electronic ticket vending machines, information inquiry systems, access control identification systems, and the like, and even portable electronic devices such as smart phones, tablet computers, or notebook computers, and thus touch panels have been widely used. Touch panels are often used with display devices to provide video information, but most commonly used are liquid crystal display panels, so how to ensure the mounting accuracy between the panels and the liquid crystal display panels and the stability of the connection between the panels and the liquid crystal display panels becomes a problem to be solved.
Disclosure of Invention
The invention aims to provide a high-precision multi-touch display unit, which is thinner, better in user experience, and has a buffer function, so that the shock resistance of the touch unit is enhanced, and the structural stability and the service life of the touch unit are improved.
In order to achieve the above purpose, the invention adopts the following technical scheme: the high-precision multi-point touch display unit comprises a panel layer, a touch sensing layer and a liquid crystal panel layer, wherein the touch sensing layer is in contact connection with the surface of the panel layer, the liquid crystal panel layer is positioned on one side of the touch sensing layer opposite to the panel layer, and the liquid crystal panel layer is in adhesive connection with the touch sensing layer through a transparent adhesive film layer;
the touch sensing layer comprises a base film, a plurality of driving metal wires and sensing metal wires, wherein the driving metal wires and the sensing metal wires are positioned on the base film, the driving metal wires are arranged in parallel, the sensing metal wires are arranged in parallel, the driving metal wires and the sensing metal wires are arranged in a crossing mode, the tail ends of the driving metal wires and the sensing metal wires are connected with a controller, and the controller comprises:
the power module is used for providing electric energy for the load;
an excitation circuit for generating an excitation signal;
the first channel array change-over switch is used for receiving an excitation signal of the excitation circuit, performing time-sharing cutting on the excitation signal according to a clock signal, and sequentially applying the segmented excitation signal to a driving metal wire of the touch film according to an excitation scanning rule, wherein the excitation scanning rule is a corresponding relation between the position of the driving metal wire and the application time;
the second channel array change-over switch sequentially reads the induction signals on the induction metal wires from the touch film according to an induction scanning rule, and outputs the read induction signals, wherein the induction scanning rule is the corresponding relation between the positions of the induction metal wires and the reading time;
the signal conditioning circuit is used for receiving the induction signal from the second channel array change-over switch, filtering the induction signal according to the setting of the noise parameter, and amplifying the filtered effective analog signal containing the trigger information;
the clock synchronization circuit receives clock signals from the exciting end and the sensing end and obtains aligned clock information;
the AD sampling circuit is used for collecting the amplified effective analog signals from the signal conditioning circuit based on the aligned clock information and converting the effective analog signals into effective digital signals which can be processed by the data analysis and processing module and contain trigger information;
and the data analysis and processing module extracts touch information according to the excitation scanning rule, the induction scanning rule and the effective digital signals from the AD sampling circuit and combines the position and time, so that the position information of touch operation on the touch film is obtained.
The further improved scheme in the technical scheme is as follows:
1. in the scheme, the touch sensing layer is connected with the surface of the panel layer in an adhesive mode, and is connected with a wet paste or a dry paste mode.
2. In the above scheme, the area of the touch sensing layer is smaller than that of the panel layer, and the touch sensing layer is located in the middle area of the surface of the panel layer.
3. In the above scheme, the panel layer is a transparent glass layer, a transparent acrylic panel layer, a polymethyl methacrylate layer or a polycarbonate layer.
4. In the scheme, the panel layer is a writing panel layer, one side surface of the writing panel layer is a smooth surface, the other side surface of the writing panel layer is a writable rough surface, and the touch sensing layer is in contact connection with the smooth surface of the panel layer.
5. In the above scheme, the power supply module comprises at least two DC/DC isolation power supply modules.
6. In the scheme, the power module is connected with the CPU through a USB isolation circuit.
7. In the scheme, the exciting circuit is an RC sine wave oscillating circuit.
8. In the above scheme, the driving metal wire and the sensing metal wire are vertically crossed.
Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages:
1. according to the high-precision multi-point touch display unit, the liquid crystal panel layer is arranged on one side of the touch sensing layer, which is opposite to the panel layer, the liquid crystal panel layer is connected with the touch sensing layer through the transparent adhesive film layer in an adhesive mode, the liquid crystal panel and the touch sensing layer are bonded together through the OCA adhesive or the transparent hot melt packaging adhesive film, the whole structure is free of an air layer and is truly fully bonded, the appearance of the whole structure is black, the situation that color difference exists when an edge black frame and a middle display area black screen in the existing structure does not exist, the startup display is clearer, and the user experience is good; the liquid crystal panel is directly adhered to the touch sensing layer to form an integrated structure, and when the liquid crystal panel is assembled with the display in the later period, only the backlight module and the shell of the liquid crystal display are required to be installed behind the liquid crystal panel, so that the assembly precision between the liquid crystal panel and the touch sensing layer can be completely ensured, the influence of the assembly of the liquid crystal panel and the touch sensing layer is avoided, the touch precision of the later period cost is ensured, the installation is convenient, and the production efficiency is greatly improved; in addition, the liquid crystal panel is directly used as a rear packaging plate, the glue layer is used for directly isolating the touch sensing layer from the liquid crystal panel, the thickness of the touch unit is reduced, and the user experience is better; and the adhesive film layer also has a buffer function, so that the impact resistance of the touch unit is enhanced, and the structural stability and the service life of the touch unit are improved.
2. The invention relates to a high-precision multi-point touch display unit, which comprises a first channel array change-over switch of a controller, a second channel array change-over switch, a first switch and a second switch, wherein the first channel array change-over switch is used for receiving an excitation signal of an excitation circuit, carrying out time-sharing cutting on the excitation signal according to a clock signal, then sequentially applying the segmented excitation signal to a driving metal wire of a touch film according to an excitation scanning rule, wherein the excitation scanning rule is a corresponding relation between the position and the application time of the driving metal wire, the second channel array change-over switch sequentially reads an induction signal on the induction metal wire from the touch film according to an induction scanning rule, and outputs the read induction signal, the induction scanning rule is a corresponding relation between the position and the reading time of the induction metal wire, and the array change-over switch is adopted to alternately gate a transmitting channel and a receiving channel, so that the utilization rate of channel resources is improved, the material cost of a chip is reduced, the problem that the original controller cannot be suitable for the requirement of multiple channel ports is overcome, and the adopted analog switch array is ultra-low on resistance and ultra-low capacitance, so that the excitation signal can be almost lossless after passing through the analog switch circuit, and the consistency of the amplitude and the phase of each channel signal is guaranteed; in addition, the signal conditioning circuit of the controller is used for receiving the induction signal from the second channel array change-over switch, filtering the induction signal according to the setting of noise parameters, amplifying the filtered effective analog signal containing trigger information, wherein the front section of the conditioning circuit is a band-pass filter, the signal of a useful signal frequency section can pass through, interference signals of high frequency and low frequency are filtered, the middle section is an amplifier, the received weak signal is amplified, the rear end is an alternating current-direct current conversion circuit, the amplified signal is converted into a direct current voltage signal to be sent to the AD conversion circuit, and the setting of the conditioning circuit can filter the interference signal and amplify the useful signal, so that the accuracy of signal processing is ensured.
3. The invention relates to a high-precision multi-touch display unit, which comprises a clock synchronization circuit of a controller, an AD sampling circuit, a data analysis and processing module, a trigger information-containing effective digital signal, an AD sampling circuit and a data analysis and processing module, wherein the clock synchronization circuit of the controller receives clock signals from an excitation end and clock signals from an induction end and obtains aligned clock information; in addition, the power module comprises at least two DC/DC isolation power modules, and the power module is connected with the CPU through a USB isolation circuit, so that no direct electrical connection exists between an input loop and an output loop of the power module, an insulating high-resistance state exists between the input loop and the output loop, no current loop exists, and interference can be well eliminated in power supply.
Drawings
FIG. 1 is a cross-sectional view of a high-precision multi-touch display unit structure of the invention;
FIG. 2 is a schematic diagram showing the structural decomposition of the high-precision multi-touch display unit of the present invention;
fig. 3 is an electrical schematic diagram of a controller in the high-precision multi-touch display unit of the present invention.
In the above figures: 1. a panel layer; 2. a touch sensing layer; 1a, driving metal wires; 2a, sensing metal wires; 3a, a power supply module; 4a, an excitation circuit; 5a, a first channel array change-over switch; 6a, a second channel array change-over switch; 7a, a signal conditioning circuit; 8a, AD sampling circuit; 9a, a data analysis and processing module; 10a, clock synchronization electricity; 3. a transparent adhesive film layer; 5. a liquid crystal panel layer.
Detailed Description
Example 1: the high-precision multi-point touch display unit comprises a panel layer 1, a touch sensing layer 2 and a liquid crystal panel layer 5, wherein the touch sensing layer 2 is in contact connection with the surface of the panel layer 1, the liquid crystal panel layer 5 is positioned at one side of the touch sensing layer 2 opposite to the panel layer 1, and the liquid crystal panel layer 5 is in adhesive connection with the touch sensing layer 2 through a transparent adhesive film layer 3;
the touch sensing layer 2 comprises a base film and a plurality of driving metal wires 1a and sensing metal wires 2a which are positioned on the base film, wherein the driving metal wires 1a are arranged in parallel, the sensing metal wires 2a are arranged in parallel, the driving metal wires 1a and the sensing metal wires 2a are arranged in a crossing manner, the tail ends of the driving metal wires 1a and the sensing metal wires 2a are connected with a controller, and the controller comprises:
a power supply module 3a for supplying power to a load;
a drive circuit 4a for generating a drive signal;
the first channel array change-over switch 5a is used for receiving the excitation signal of the excitation circuit 4a, performing time-sharing cutting on the excitation signal according to a clock signal, and sequentially applying the segmented excitation signal to the driving metal wire 1a of the touch film according to an excitation scanning rule, wherein the excitation scanning rule is a corresponding relation between the position and the application time of the driving metal wire 1 a;
the second channel array change-over switch 6a sequentially reads the induction signals on the induction metal wires 2a from the touch film according to an induction scanning rule, and outputs the read induction signals, wherein the induction scanning rule is the corresponding relation between the positions of the induction metal wires 2a and the reading time;
the signal conditioning circuit 7a is configured to receive the sensing signal from the second channel array switch 6a, filter the sensing signal according to the setting of the noise parameter, and amplify the filtered effective analog signal containing the trigger information;
a clock synchronization circuit 10a that receives clock signals from the excitation side and the induction side and obtains aligned clock information;
the AD sampling circuit 8a collects the amplified effective analog signal from the signal conditioning circuit 7a based on the aligned clock information, and converts the effective analog signal into an effective digital signal containing trigger information which can be processed by the data analysis and processing module 9 a;
the data analysis and processing module 9a extracts touch information according to the excitation scanning rule, the induction scanning rule and the effective digital signal from the AD sampling circuit 8a, and combines the position and time, thereby obtaining the position information of the touch operation on the touch film.
The touch sensing layer 2 is connected with the surface of the panel layer 1 in an adhesive manner; the area of the touch sensing layer 2 is smaller than that of the panel layer 1, and the touch sensing layer 2 is positioned in the middle area of the surface of the panel layer 1; the panel layer 1 is a transparent acrylic panel layer; the power supply module 3a includes at least two DC/DC isolated power supply modules; the power module 3a is connected to the CPU through a USB isolation circuit.
Example 2: the high-precision multi-point touch display unit comprises a panel layer 1, a touch sensing layer 2 and a liquid crystal panel layer 5, wherein the touch sensing layer 2 is in contact connection with the surface of the panel layer 1, the liquid crystal panel layer 5 is positioned at one side of the touch sensing layer 2 opposite to the panel layer 1, and the liquid crystal panel layer 5 is in adhesive connection with the touch sensing layer 2 through a transparent adhesive film layer 3;
the touch sensing layer 2 comprises a base film and a plurality of driving metal wires 1a and sensing metal wires 2a which are positioned on the base film, wherein the driving metal wires 1a are arranged in parallel, the sensing metal wires 2a are arranged in parallel, the driving metal wires 1a and the sensing metal wires 2a are arranged in a crossing manner, the tail ends of the driving metal wires 1a and the sensing metal wires 2a are connected with a controller, and the controller comprises:
a power supply module 3a for supplying power to a load;
a drive circuit 4a for generating a drive signal;
the first channel array change-over switch 5a is used for receiving the excitation signal of the excitation circuit 4a, performing time-sharing cutting on the excitation signal according to a clock signal, and sequentially applying the segmented excitation signal to the driving metal wire 1a of the touch film according to an excitation scanning rule, wherein the excitation scanning rule is a corresponding relation between the position and the application time of the driving metal wire 1 a;
the second channel array change-over switch 6a sequentially reads the induction signals on the induction metal wires 2a from the touch film according to an induction scanning rule, and outputs the read induction signals, wherein the induction scanning rule is the corresponding relation between the positions of the induction metal wires 2a and the reading time;
the signal conditioning circuit 7a is configured to receive the sensing signal from the second channel array switch 6a, filter the sensing signal according to the setting of the noise parameter, and amplify the filtered effective analog signal containing the trigger information;
a clock synchronization circuit 10a that receives clock signals from the excitation side and the induction side and obtains aligned clock information;
the AD sampling circuit 8a collects the amplified effective analog signal from the signal conditioning circuit 7a based on the aligned clock information, and converts the effective analog signal into an effective digital signal containing trigger information which can be processed by the data analysis and processing module 9 a;
the data analysis and processing module 9a extracts touch information according to the excitation scanning rule, the induction scanning rule and the effective digital signal from the AD sampling circuit 8a, and combines the position and time, thereby obtaining the position information of the touch operation on the touch film.
The touch sensing layer 2 is connected with the surface of the panel layer 1 in a dry-sticking way; the panel layer 1 is a transparent glass layer; the panel layer 1 is a writing panel layer, one side surface of the writing panel layer is a smooth surface, the other side surface of the writing panel layer is a writable rough surface, and the touch sensing layer 2 is in contact connection with the smooth surface of the panel layer 1; the excitation circuit 4a is an RC sine wave oscillation circuit; the driving wire 1a and the sensing wire 2a are arranged to intersect perpendicularly.
When the high-precision multi-touch display unit is adopted, the liquid crystal panel and the touch sensing layer are bonded together by using the OCA adhesive or the transparent hot melt packaging adhesive film, the whole structure is free of an air layer, so that the whole structure is truly fully bonded, the appearance of the whole structure looks as a whole black, the situation that color difference exists when an edge black frame and a middle display area black screen in the existing structure does not exist, the startup display is clearer, and the user experience is good; the liquid crystal panel is directly adhered to the touch sensing layer to form an integrated structure, and when the liquid crystal panel is assembled with the display in the later period, only the backlight module and the shell of the liquid crystal display are required to be installed behind the liquid crystal panel, so that the assembly precision between the liquid crystal panel and the touch sensing layer can be completely ensured, the influence of the assembly of the liquid crystal panel and the touch sensing layer is avoided, the touch precision of the later period cost is ensured, the installation is convenient, and the production efficiency is greatly improved;
in addition, the liquid crystal panel is directly used as a rear packaging plate, the glue layer is used for directly isolating the touch sensing layer from the liquid crystal panel, the thickness of the touch unit is reduced, and the user experience is better; the adhesive film layer also has a buffer function, so that the shock resistance of the touch unit is enhanced, and the structural stability and the service life of the touch unit are improved;
in addition, the controller adopts an array change-over switch to alternately gate the transmitting channel and the receiving channel, compared with the mode of directly connecting the channel with the traditional processor chip, the utilization rate of channel resources is well improved, the material cost of the chip is reduced, the problem that the original controller cannot adapt to the requirements of multiple channel ports is solved, and the adopted analog switch array is of ultra-low on resistance and ultra-low capacitance, so that excitation signals can be almost lossless after passing through an analog switch circuit, and meanwhile, the consistency of the amplitude and the phase of each channel signal is guaranteed to be good;
in addition, the front section of the conditioning circuit of the controller is a band-pass filter which can enable signals of a useful signal frequency section to pass through and filter interference signals of high frequency and low frequency, the middle section is an amplifier which amplifies received weak signals, the rear end is an alternating current-direct current conversion circuit which converts the amplified signals into direct current voltage signals and sends the direct current voltage signals to the AD conversion circuit, and the conditioning circuit can filter the interference signals and amplify the useful signals, so that the accuracy of signal processing is ensured;
in addition, the controller obtains aligned clock information through the clock synchronization circuit, and controls the AD sampling circuit to sample the sensing signal, so that the AD sampling circuit is ensured to recover correct data at the moment with the least waveform distortion, error probability is reduced, and accuracy is ensured; in addition, the input loop and the output loop of the power module of the controller are not directly electrically connected, the input loop and the output loop are in an insulated high-resistance state, and the power module has no current loop, so that interference can be well eliminated in power supply.
The above embodiments are provided to illustrate the technical concept and features of the present invention and are intended to enable those skilled in the art to understand the content of the present invention and implement the same, and are not intended to limit the scope of the present invention. All equivalent changes or modifications made in accordance with the spirit of the present invention should be construed to be included in the scope of the present invention.
Claims (8)
1. The utility model provides a high accuracy multi-point touch display unit which characterized in that: the touch sensing device comprises a panel layer (1), a touch sensing layer (2) and a liquid crystal panel layer (5), wherein the touch sensing layer (2) is in contact connection with the surface of the panel layer (1), the liquid crystal panel layer (5) is positioned on one side of the touch sensing layer (2) opposite to the panel layer (1), the liquid crystal panel layer (5) is in adhesive connection with the touch sensing layer (2) through a transparent adhesive film layer (3), the panel layer (1) is a writing panel layer, one side surface of the writing panel layer is a smooth surface, and the other side surface of the writing panel layer is a writable rough surface;
the touch control induction layer (2) comprises a base film and a plurality of driving metal wires (1 a) and induction metal wires (2 a) which are arranged on the base film, wherein the driving metal wires (1 a) are arranged in parallel, the induction metal wires (2 a) are arranged in parallel, the driving metal wires (1 a) and the induction metal wires (2 a) are arranged in a crossed mode, the tail ends of the driving metal wires (1 a) and the induction metal wires (2 a) are connected with a controller, and the controller comprises:
a power supply module (3 a) for providing power to a load, comprising at least two DC/DC isolated power supply modules;
an excitation circuit (4 a) for generating an excitation signal;
the first channel array change-over switch (5 a) is used for receiving an excitation signal of the excitation circuit (4 a), performing time-sharing cutting on the excitation signal according to a clock signal, and sequentially applying the segmented excitation signal to the driving metal wire (1 a) of the touch film according to an excitation scanning rule, wherein the excitation scanning rule is a corresponding relation between the position and the application time of the driving metal wire (1 a);
the second channel array change-over switch (6 a) sequentially reads the induction signals on the induction metal wires (2 a) from the touch film according to an induction scanning rule, and outputs the read induction signals, wherein the induction scanning rule is the corresponding relation between the positions of the induction metal wires (2 a) and the reading time;
the signal conditioning circuit (7 a) is used for receiving the induction signal from the second channel array change-over switch (6 a), filtering the induction signal according to the setting of noise parameters, and amplifying the filtered effective analog signal containing the trigger information;
a clock synchronization circuit (10 a) which receives clock signals from an excitation end and a sensing end and obtains aligned clock information;
the AD sampling circuit (8 a) collects amplified effective analog signals from the signal conditioning circuit (7 a) based on the aligned clock information and converts the effective analog signals into effective digital signals containing trigger information which can be processed by the data analysis and processing module (9 a);
and the data analysis and processing module (9 a) extracts touch information according to the excitation scanning rule, the induction scanning rule and the effective digital signal from the AD sampling circuit (8 a) and combines the position and time, so that the position information of the touch operation on the touch film is obtained.
2. The high-precision multi-touch display unit of claim 1, wherein: the touch sensing layer (2) is connected with the surface of the panel layer (1) in an adhesive mode, and is connected with a wet paste or a dry paste mode.
3. The high-precision multi-touch display unit of claim 1, wherein: the area of the touch sensing layer (2) is smaller than that of the panel layer (1), and the touch sensing layer (2) is located in the middle area of the surface of the panel layer (1).
4. The high-precision multi-touch display unit of claim 1, wherein: the panel layer (1) is a transparent glass layer, a transparent acrylic plate layer, a polymethyl methacrylate layer or a polycarbonate layer.
5. The high-precision multi-touch display unit of claim 1, wherein: the touch sensing layer (2) is in contact connection with the smooth surface of the panel layer (1).
6. The high-precision multi-touch display unit of claim 1, wherein: the power module (3 a) is connected with the CPU through a USB isolation circuit.
7. The high-precision multi-touch display unit of claim 1, wherein: the exciting circuit (4 a) is an RC sine wave oscillating circuit.
8. The high-precision multi-touch display unit of claim 1, wherein: the driving metal wire (1 a) is perpendicularly crossed with the sensing metal wire (2 a).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311348715.1A CN117539364A (en) | 2018-12-06 | 2018-12-06 | Multi-channel touch control display unit |
| CN201811484275.1A CN109284030B (en) | 2018-12-06 | 2018-12-06 | High-precision multi-point touch display unit |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811484275.1A CN109284030B (en) | 2018-12-06 | 2018-12-06 | High-precision multi-point touch display unit |
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| CN202311348715.1A Division CN117539364A (en) | 2018-12-06 | 2018-12-06 | Multi-channel touch control display unit |
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| CN109284030A CN109284030A (en) | 2019-01-29 |
| CN109284030B true CN109284030B (en) | 2023-09-19 |
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| CN201811484275.1A Active CN109284030B (en) | 2018-12-06 | 2018-12-06 | High-precision multi-point touch display unit |
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| CN112383861B (en) * | 2020-12-03 | 2022-11-22 | 歌尔科技有限公司 | Touch module and wireless earphone box |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000089912A (en) * | 1998-09-14 | 2000-03-31 | Sharp Corp | Liquid crystal display device |
| CN102124426A (en) * | 2009-09-27 | 2011-07-13 | 智点科技（深圳）有限公司 | Touch control display |
| CN102132231A (en) * | 2009-09-27 | 2011-07-20 | 智点科技（深圳）有限公司 | Touch control display able to remove display impact on touch control |
| CN107817915A (en) * | 2016-09-12 | 2018-03-20 | 速博思股份有限公司 | Touch-control induction substrate |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106775040B (en) * | 2015-11-20 | 2019-09-24 | 京东方科技集团股份有限公司 | Control device, touch screen and the display device of electroluminescent touch-control display panel |
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2018
- 2018-12-06 CN CN202311348715.1A patent/CN117539364A/en active Pending
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000089912A (en) * | 1998-09-14 | 2000-03-31 | Sharp Corp | Liquid crystal display device |
| CN102124426A (en) * | 2009-09-27 | 2011-07-13 | 智点科技（深圳）有限公司 | Touch control display |
| CN102132231A (en) * | 2009-09-27 | 2011-07-20 | 智点科技（深圳）有限公司 | Touch control display able to remove display impact on touch control |
| CN107817915A (en) * | 2016-09-12 | 2018-03-20 | 速博思股份有限公司 | Touch-control induction substrate |
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| CN117539364A (en) | 2024-02-09 |
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