CN108196711B - Input module of intelligent terminal and intelligent terminal with input module - Google Patents
Input module of intelligent terminal and intelligent terminal with input module Download PDFInfo
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- CN108196711B CN108196711B CN201711459888.5A CN201711459888A CN108196711B CN 108196711 B CN108196711 B CN 108196711B CN 201711459888 A CN201711459888 A CN 201711459888A CN 108196711 B CN108196711 B CN 108196711B
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- pressure sensor
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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
- G06F3/0414—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means using force sensing means to determine a position
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/16—Constructional details or arrangements
- G06F1/1613—Constructional details or arrangements for portable computers
- G06F1/1633—Constructional details or arrangements of portable computers not specific to the type of enclosures covered by groups G06F1/1615 - G06F1/1626
- G06F1/1684—Constructional details or arrangements related to integrated I/O peripherals not covered by groups G06F1/1635 - G06F1/1675
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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
Abstract
The invention provides an input module of an intelligent terminal and the intelligent terminal with the input module, wherein the input module is arranged on the intelligent terminal with a comprehensive screen, and the input module comprises: the pressing input unit comprises at least one film pressure sensor arranged in a screen projection area of the intelligent terminal and a first sampling circuit connected with the film pressure sensor; the fingerprint acquisition unit comprises at least one fingerprint sensor and a second sampling circuit, wherein the fingerprint sensor is arranged between a screen of the intelligent terminal and an end edge of the intelligent terminal and on a narrow plane on the same side as the screen, and the second sampling circuit is connected with the fingerprint sensor. After the technical scheme is adopted, the interface key function and the fingerprint identification function of the main menu are realized on the same side of the screen of the intelligent terminal; the design of the back of the intelligent terminal is kept uniform, and the intelligent terminal has aesthetic feeling.
Description
Technical Field
The invention relates to the field of intelligent terminals, in particular to an input module of an intelligent terminal and the intelligent terminal with the input module.
Background
At present, intelligent terminal devices with large-area screens, such as smart phones, tablet computers, multimedia players and the like, are often used in daily life and work, and are convenient for people to realize functions of contacting the outside, browsing files, entertaining and the like. The intelligent terminal is provided with a power key, a main menu interface key (Home key) and a volume key, wherein the main menu interface key is often integrated with a fingerprint sensor and used for executing various operations on the intelligent terminal, such as starting, shutting down, returning to a main menu interface, restarting, volume adjusting and other functions. At the present stage, for the design of the intelligent terminal, a design trend appears, that is, a full screen design, that is, the area of the screen occupies most of the area of one plane of the intelligent terminal, and the intelligent terminal is also called a full screen terminal or a full screen mobile phone. For an intelligent terminal with a comprehensive screen, the intelligent terminal cannot be designed according to a conventional main menu interface key (Home key), that is, a space for arranging the main menu interface key cannot be found on an intelligent terminal plane where the screen is located, and the main menu interface key is an essential function key for the intelligent terminal, which is a contradiction.
In order to solve the problem of the layout of the interface keys of the main menu, the prior art adopts a mode of arranging the interface keys of the main menu on the back of the intelligent terminal, and similarly, a fingerprint identification device is also arranged on the back of the intelligent terminal along with the interface keys of the main menu. The prior art designs still suffer from the following problems:
1. the user operation experience is influenced, and the user can press the main menu interface key or apply fingerprint contact operation on a fingerprint identification device arranged on the main menu interface key when holding the intelligent terminal;
2. the integrated planar design of the back of the intelligent terminal is destroyed, unevenness is generated, and the appearance is influenced.
Therefore, a technical scheme that a main menu interface key and a fingerprint identification device can be arranged on one side of a screen of the intelligent terminal is needed, and a user can conveniently operate the intelligent terminal from the same side of the screen.
Disclosure of Invention
In order to overcome the technical defects, the invention aims to provide an input module of an intelligent terminal and the intelligent terminal with the input module, which support a user to use a main menu interface key and a fingerprint identification function on the same side of a screen of the intelligent terminal.
The first aspect of this application discloses an intelligent terminal's input module, locates on the intelligent terminal that has comprehensive screen, input module includes:
the pressing input unit comprises at least one film pressure sensor arranged in a screen projection area of the intelligent terminal and a first sampling circuit connected with the film pressure sensor;
the fingerprint acquisition unit comprises at least one fingerprint sensor and a second sampling circuit, wherein the fingerprint sensor is arranged between a screen of the intelligent terminal and an end edge of the intelligent terminal and on a narrow plane on the same side as the screen, and the second sampling circuit is connected with the fingerprint sensor.
Preferably, the screen of the intelligent terminal is a capacitive touch screen; the film pressure sensor is arranged below the capacitive touch screen.
Preferably, the thin film pressure sensor is a resistive sensor including a first end and a second end; the first sampling circuit includes:
the working power supply is arranged in the intelligent terminal, is connected with the first end of the film pressure sensor and supplies power to the first sampling circuit;
the analog-to-digital converter is arranged in the intelligent terminal and is connected with the second end of the film pressure sensor;
the sampling resistor is arranged in the intelligent terminal and is connected with the second end of the film pressure sensor and the ground;
when the film pressure sensor receives a pressing operation, the resistance value of the film pressure sensor changes, so that the voltage of the second end of the film pressure sensor changes, and the voltage change is detected by the analog-to-digital converter and converted into digital quantity.
Preferably, the working power supply and the analog-to-digital converter are both arranged in a sampling chip; the sampling chip is a single chip microcomputer with a serial interface, and digital quantity obtained by conversion of the analog-to-digital converter is sent to a main processing unit of the intelligent terminal.
Preferably, the voltage of the working power supply is 5 volts; the resistance value of the sampling resistor is 300-700 ohms.
Preferably, the film pressure sensor is arranged in the center of the bottom of the screen of the intelligent terminal; the fingerprint sensor is slender and is arranged on a narrow plane between the center of the bottom of a screen of the intelligent terminal and the edge of the intelligent terminal.
Preferably, the fingerprint sensor is a wiping type sensor that receives a sliding operation of a user.
Preferably, the second sampling circuit comprises a gain circuit, a control chip and an interface circuit.
Preferably, the fingerprint acquisition unit is packaged by adopting a stack packaging technology.
In a second aspect of the present application, an intelligent terminal is disclosed, which includes the above input module.
After the technical scheme is adopted, compared with the prior art, the method has the following beneficial effects:
1. realizing a main menu interface key function and a fingerprint identification function on the same side of a screen of the intelligent terminal;
2. the design of the back of the intelligent terminal is kept uniform, and the intelligent terminal has aesthetic feeling.
Drawings
Fig. 1 is a schematic structural diagram of an intelligent terminal according to a preferred embodiment of the present invention;
FIG. 2 is a block diagram of a pressing input unit according to a preferred embodiment of the present invention;
FIG. 3 is a schematic diagram of a pressing input unit according to a preferred embodiment of the present invention
FIG. 4 is a block diagram of a fingerprint acquisition unit according to a preferred embodiment of the present invention;
fig. 5 is a schematic structural diagram of a fingerprint acquisition unit according to a preferred embodiment of the present invention.
Reference numerals:
100-intelligent terminal, 101-screen, 200-first sampling circuit, 201-film pressure sensor, 202-working power supply, 203-analog-to-digital converter, 204-sampling resistor, 300-second sampling circuit, 301-fingerprint sensor, 302-gain circuit, 303-control chip and 304-interface circuit.
Detailed Description
The advantages of the invention are further illustrated in the following description of specific embodiments in conjunction with the accompanying drawings.
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.
The terminology used in the present disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. As used in this disclosure and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.
It is to be understood that although the terms first, second, third, etc. may be used herein to describe various information, such information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the present disclosure. The word "if" as used herein may be interpreted as "at … …" or "when … …" or "in response to a determination", depending on the context.
In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention.
In the description of the present invention, unless otherwise specified and limited, it is to be noted that the terms "mounted," "connected," and "connected" are to be interpreted broadly, and may be, for example, a mechanical connection or an electrical connection, a communication between two elements, a direct connection, or an indirect connection via an intermediate medium, and specific meanings of the terms may be understood by those skilled in the art according to specific situations.
In the following description, suffixes such as "module", "component", or "unit" used to denote elements are used only for facilitating the explanation of the present invention, and have no specific meaning in themselves. Thus, "module" and "component" may be used in a mixture.
Referring to fig. 1, which is a schematic structural diagram of an intelligent terminal 100 according to a preferred embodiment of the present invention, fig. 1 shows a side where a screen 101 of the intelligent terminal 100 is located, that is, a front side of the intelligent terminal 100. The screen 101 is a comprehensive screen, and occupies most of the area of the front surface of the intelligent terminal 100. The intelligent terminal 100 further includes an input module, which includes:
-a press input unit
The press input unit is used for receiving press operation of a user and realizing a key function, in particular a function of a main menu interface key (Home key). As shown in fig. 2, the press input unit further includes:
At least one film pressure sensor 201 is arranged in the projection area of the screen 101 of the intelligent terminal 100. That is, the film pressure sensor 201 is disposed within the area of the screen 101, overlapping the screen 101 in the vertical direction. The layout position of the thin film pressure sensor 201 can allow a user to perform a pressing operation on the front surface of the smart terminal 100. The film pressure sensor 201 is a sheet-like shape, and when an external pressing operation is received, a change in resistance value is generated so as to be recognized by a sampling circuit, and thus is also referred to as a resistive film pressure sensor. For the membrane pressure sensor 201, the sensitivity and linearity are two of the most important performance criteria for the membrane pressure sensor 201.
A first sampling circuit 200
The first sampling circuit 200 is connected to the film pressure sensor 201, and is used for sampling and detecting a resistance value of the film pressure sensor 201, and converting the resistance value into an electrical signal recognizable by the intelligent terminal 100, so as to process a pressing operation of a user.
The input module further comprises:
-fingerprint acquisition unit
The fingerprint collecting unit is used for collecting external fingerprint information, and is used for authenticating the use authority of the intelligent terminal 100 or authenticating the use authority of some application programs. As shown in fig. 4, the fingerprint acquisition unit further includes:
The number of the fingerprint sensors 301 is at least one, and the fingerprint sensors are arranged on a narrow plane between the screen 101 of the intelligent terminal 100 and the end edge of the intelligent terminal 100, and the narrow plane is located on the same side with the screen 101. The fingerprint sensor 301 is disposed on the same side of the screen 101 of the intelligent terminal 100, that is, on the front surface of the intelligent terminal 100. Because a certain gap space is left between the screen 101 and the end edge of the intelligent terminal 100, a narrow plane is formed, and the fingerprint sensors 301 are arranged on the narrow plane. The fingerprint sensor 301 is disposed at a position that allows a user to perform a fingerprint touch operation on the front surface of the intelligent terminal 100, so that the intelligent terminal 100 can recognize fingerprint information.
The fingerprint Sensor 301 (also called fingerprint Sensor) is a key device for realizing fingerprint collection, and the fingerprint Sensor 301 is divided into an optical fingerprint Sensor, a semiconductor capacitance Sensor, a semiconductor thermal Sensor, a semiconductor pressure Sensor, an ultrasonic Sensor, a radio frequency RF Sensor and the like according to a sensing principle, i.e., a fingerprint imaging principle and technology. The manufacturing technology of the fingerprint sensor 301 is a high and new technology with strong comprehensiveness, high technical complexity and difficult manufacturing process. The optical fingerprint sensor mainly utilizes the refraction and reflection principles of light, the light irradiates to the triple prism from the bottom and is emitted out through the prism, the refraction angle of the emitted light on the uneven line of the fingerprint on the surface of the finger and the brightness of the reflected light are different, and the image information with different brightness degrees can be collected by the optical device of the CMOS or the CCD, so that the fingerprint collection is completed. The principle of the semiconductor fingerprint sensor is similar whether the semiconductor fingerprint sensor is a capacitance type or an inductance type, fingers are attached to a flat plate integrated with thousands of semiconductor devices to form the other surface of a capacitor (an inductance) with the finger, the actual distances between the contact flat plate at a convex point and the contact flat plate at a concave point are different due to the fact that the plane of the fingers is uneven, the formed capacitance/inductance values are different, and the device collects the collected different values according to the principle, so that the fingerprint collection is completed.
-a second sampling circuit 300
The second sampling circuit 300 is connected to the fingerprint sensor 301, and is configured to sample and detect a change in an electrical signal of the fingerprint sensor 301, and convert the change into an electrical signal recognizable by the intelligent terminal 100, so as to process a fingerprint touch operation of a user.
In a preferred embodiment of the present invention, the screen 101 of the intelligent terminal 100 is a capacitive touch screen. The film pressure sensor 201 is disposed below the capacitive touch screen. The capacitive touch screen is a screen type adopted by a mainstream intelligent terminal, and is mainly structured by plating a transparent thin film conductor layer on a glass screen and adding a piece of protective glass on the conductor layer, so that the conductor layer and an inductor can be thoroughly protected by double-glass design. The capacitive touch screen is characterized in that long and narrow electrodes are plated on the four sides of the touch screen, a low-voltage alternating current electric field is formed in a conductor layer, when a user touches the screen, a coupling capacitor is formed between a finger and the conductor layer due to a human body electric field, currents emitted by the electrodes on the four sides flow to contacts, the intensity of the currents is in direct proportion to the distance from the finger to the electrodes, a controller behind the touch screen calculates the proportion and intensity of the currents, and the position of a touch point is accurately calculated. The double glass of the capacitive touch screen can protect the conductor and the inductor, and can effectively prevent external environmental factors from influencing the touch screen, and the capacitive touch screen can still accurately calculate the touch position even if the screen is stained with dirt, dust or oil stain. The position of the film pressure sensor 201 can be below the lower layer of protective glass of the capacitive touch screen, so that the touch operation identification function of the overlapped area of the film pressure sensor 201 on the capacitive touch screen is not influenced, and the film pressure sensor 201 can be ensured to receive external pressing operation. In another embodiment of the present invention, the thin film pressure sensor 201 may be disposed above the capacitive touch screen, and directly contact with a finger of a user.
Fig. 3 is a schematic structural diagram of a pressing input unit according to a preferred embodiment of the present invention. In this embodiment, the film pressure sensor 201 is a resistive sensor, and includes a first end and a second end, that is, the film pressure sensor 201 generates a change in a resistance value after receiving an external pressing operation, and the resistance value can be measured from the first end and the second end. The first sampling circuit 200 includes:
operating power supply 202
The working power supply 202 is arranged in the intelligent terminal 100, is connected with the first end of the film pressure sensor 201, and supplies power to the first sampling circuit 200. The detection sampling of the resistance value of the thin film pressure sensor 201 requires an external power supply to apply a voltage, so as to generate a current passing through the thin film pressure sensor 201, thereby sampling the voltage change of the thin film pressure sensor 201. The working power supply 202 is taken from a voltage output interface of a power management module or other modules in the intelligent terminal 100.
-analog to digital converter 203
The analog-to-digital converter 203 is disposed in the intelligent terminal 100 and connected to the second end of the film pressure sensor 201. It can be seen that the second end of the film pressure sensor 201 is a voltage value sampling point of the film pressure sensor 201, and the analog-to-digital converter 203 collects an analog voltage value of the second end of the film pressure sensor 201. The analog-to-digital converter 203 can convert the collected analog voltage value into a digital signal, such as an 8-bit or 16-bit digital signal, and more bits means higher conversion precision.
The sampling resistor 204 is disposed in the intelligent terminal 100 and connected to the second end of the film pressure sensor 201 and the ground. The sampling resistor 204, the film pressure sensor 201, the working power supply 202 and the ground form a sampling loop, and current flows from the working power supply 202, through the film pressure sensor 201, the sampling resistor 204 and finally to the ground. The sampling resistor 204 plays a role in limiting current, and when the resistance value of the film pressure sensor 201 is too small, the sampling resistor can be used as a basis for providing the resistance value of the whole sampling loop to prevent overlarge current; the sampling resistor 204 also functions to raise the voltage value lower limit of the second end of the film pressure sensor 201, so that the voltage value of the film pressure sensor 201 is kept within a certain range, and the analog-to-digital converter 203 can recognize the voltage value more easily.
When the film pressure sensor 201 is in a normal state, that is, when no pressing operation is performed, the resistance value of the film pressure sensor 201 is R1, the resistance value of the sampling resistor 204 is Rn, the voltage of the working power supply 202 is V, and the voltage value of the second end of the film pressure sensor detected by the analog-to-digital converter 203 is R1
When the film pressure sensor 201 receives a pressing operation, the resistance value changes to R2, so that the voltage value at the second end of the film pressure sensor 201 changes to R2
The voltage value is detected by the analog-to-digital converter 203, converted into a digital value, and finally fed back to the intelligent terminal 100.
As a further improvement of the input module, the working power supply 202 and the analog-to-digital converter 203 are both disposed in a sampling chip. The sampling chip is a single chip with a serial interface, and sends the digital quantity obtained by the conversion of the analog-to-digital converter 203 to the main processing unit of the intelligent terminal 100. The sampling chip may be an ATmega328, and has a built-in working power output and analog-to-digital converter, and a UART serial port, and may upload the sampled digital quantity to the main processing unit of the intelligent terminal 100, so as to process the pressing operation, for example, perform the display operation returning to the main menu interface.
As a further improvement of the input module, the voltage of the working power supply 202 is 5 v; the resistance value of the sampling resistor 204 is 300 ohms to 700 ohms. Most of electronic elements work at 5V, which is the longest voltage level used in an electronic circuit, and the electronic elements are easy to obtain, do not need special voltage conversion, and save cost. The resistance value of the sampling resistor 204 is set, so that on one hand, the resistance of the whole sampling loop cannot be too small, so that the current is too large, and the power consumption is too large; on the other hand, the voltage detection circuit is matched with the resistance value of the film pressure sensor 201, the difference between the two is not too great, and the voltage detection can be accurate enough only if the resistance values of the two are within the same order of magnitude range.
As a further improvement of the input module, as shown in fig. 1, a film pressure sensor 201 is disposed at the bottom center of the screen 101 of the smart terminal 100. The fingerprint sensor 301 has an elongated shape and is disposed on a narrow plane between the center of the bottom of the screen 101 of the smart terminal 100 and the edge of the smart terminal 100. In the improved embodiment, the film pressure sensor 201 and the fingerprint sensor 301 are adjacently arranged at the central position of the bottom of the intelligent terminal 100, and are relatively close to the design position of the main menu interface key of the intelligent terminal with a non-full screen, so that the previous operation habits of a user can be supported, the user can still use the existing use mode when using the intelligent terminal 100 provided by the invention, the operation habits do not need to be changed, and the user experience is improved.
As a further improvement of the input module, the fingerprint sensor 301 is a wiping type sensor, and receives a sliding operation of a user. The fingerprint sensor 301 may be classified into a one-touch type sensor and a wiping type sensor according to application modes thereof, and information is acquired through a change in capacitance during a touch process. The one-touch sensor requires a finger to reliably touch a fingerprint acquisition area; the scratch-type sensor needs to be rubbed by a finger on the surface of the sensor, and the sensor can collect a set of specific data and then carry out rapid analysis and authentication. The working principle of the two types of fingerprint sensors is as follows: for concentrating "flat board" of the same little condenser polar plate of a plurality of areas on the fingerprint sensor, every little condenser polar plate can regard as a pixel, and when the bulge in the fingerprint was arranged in on little condenser polar plate, the electric capacity can increase, carries out data acquisition through the electric capacity that detects the increase, gathers the collection result of all little condenser polar plates, can obtain fingerprint image information. The human fingerprint is composed of concave-convex grains which are closely adjacent, the grain condition of the fingerprint can be detected by utilizing standard reference discharge current on each pixel point, each pixel point is precharged to a certain reference voltage firstly and then is discharged by the reference current, the change rate of the voltage on the capacitor anode is in the following proportional relation with the capacitance on the capacitor anode, the pixel (with high capacitance) under the bulge of the fingerprint discharges slowly, and the pixel (with low capacitance) under the recess of the fingerprint discharges quickly. The different discharge rates can be detected by a sample-and-hold (s/h) circuit and converted into an 8-bit digital output, and the detection method has high sensitivity to the fingerprint bulges and depressions and can form a very good original fingerprint image.
The scratching type fingerprint sensor is a novel fingerprint acquisition device, and requires a user to scratch a finger on the device. The scratching type sensor has the advantages that the size is small, the width of the scratching type sensor is not larger than 3.6 millimeters, the scratching type sensor can adapt to the size of a narrow plane between the screen 101 and the end edge of the intelligent terminal 100 in the embodiment, and the attractive effect of the comprehensive screen is guaranteed. The wiping type sensor needs to receive sliding operation of a user to effectively acquire fingerprint information, for example, the user makes the root of the first knuckle of the finger contact with the fingerprint sensor 301 first, and then slides the finger downwards until the fingertip of the finger contacts with the fingerprint sensor 301, so that traversal of the whole fingerprint surface and the fingerprint sensor 301 is completed, and fingerprint information acquisition is realized.
Referring to fig. 5, which is a schematic structural diagram of a fingerprint acquisition unit according to a preferred embodiment of the present invention, the second sampling circuit 300 includes:
-a gain circuit 302
Because the electrical signal generated by the fingerprint sensor 301 is weak, it needs to be amplified by the gain circuit 302 for identification. The gain circuit 302 may be an operational amplifier or a gain chip, and amplifies the electrical signal.
The control chip 303 processes the electrical signal amplified by the gain circuit 302, for example, performs digital quantity conversion or records a fingerprint image in an acquisition period, and finally forms fingerprint image information in a digital quantity form.
-interface circuit 304
The information collected by the fingerprint sensor 301 needs to be transmitted to the main processing unit of the intelligent terminal to complete the fingerprint collection task, so that the interface circuit 304 is required to transmit the fingerprint image information. The interface circuit 304 may be a serial circuit or a digital signal line.
As a further improvement of the input module, the fingerprint acquisition unit is packaged by adopting a stacked packaging technology. With the development of microelectronic manufacturing from two dimensions to three dimensions, the packaging manner of three-dimensional chip stacking becomes the inevitable direction of development, and the packaging manner of stacking can reduce the volume of electronic devices and fully utilize the structural space of electronic equipment. Especially for the intelligent terminal 100 applying a comprehensive screen, the structural space between the screen 101 and the end edge of the intelligent terminal 100 is very narrow, and the fingerprint acquisition unit needs to be placed in the structural space, so that a stacking and packaging mode is selected. The stack package method is divided into a conventional three-dimensional circuit package technique of gold wire bonding and a novel TSV technique. The three-dimensional circuit packaging technology using the traditional gold wire bonding not only occupies a large amount of space, but also increases energy consumption and reduces operation speed. The English full spelling of TSV is "Through Silicon Vias," and Chinese means "Through Silicon Vias. The embodiment preferably adopts a TSV technology fingerprint acquisition unit. The TSV technology can enable microelectronic packaging to achieve the most dense connection, and the three-dimensional size to achieve the minimum; meanwhile, the TSV technology reduces the connection length, can effectively reduce the energy consumption of a chip and improves the operation speed.
In a second aspect of the present application, an intelligent terminal 100 is disclosed, which includes the above-mentioned input module. The intelligent terminal 100 can be a device adopting a large-area screen design, such as a smart phone and a tablet personal computer, and the input module is arranged on the intelligent terminal 100 so as to perform pressing input operation and fingerprint touch operation on the same side of the screen of the intelligent terminal 100. The function corresponding to the press input operation is not limited to the interface key of the main menu, and can also be other key functions such as a volume key and a power key.
It should be noted that the embodiments of the present invention have been described in terms of preferred embodiments, and not by way of limitation, and that those skilled in the art can make modifications and variations of the embodiments described above without departing from the spirit of the invention.
Claims (10)
1. An input module of an intelligent terminal is arranged on the intelligent terminal with a comprehensive screen, and is characterized in that,
the input module includes:
the pressing input unit comprises at least one film pressure sensor arranged in a screen projection area of the intelligent terminal and a first sampling circuit connected with the film pressure sensor;
the fingerprint acquisition unit comprises at least one fingerprint sensor and a second sampling circuit, wherein the fingerprint sensor is arranged on a narrow plane between a screen of the intelligent terminal and the end edge of the intelligent terminal and is on the same side with the screen;
the fingerprint sensor is slender and is arranged on a narrow plane between the center of the bottom of a screen of the intelligent terminal and the edge of the intelligent terminal.
2. The input module of claim 1,
the screen of the intelligent terminal is a capacitive touch screen;
the film pressure sensor is arranged below the capacitive touch screen.
3. The input module of claim 1 or 2,
the film pressure sensor is a resistance type sensor and comprises a first end and a second end;
the first sampling circuit includes:
the working power supply is arranged in the intelligent terminal, is connected with the first end of the film pressure sensor and supplies power to the first sampling circuit;
the analog-to-digital converter is arranged in the intelligent terminal and is connected with the second end of the film pressure sensor;
the sampling resistor is arranged in the intelligent terminal and is connected with the second end of the film pressure sensor and the ground;
when the film pressure sensor receives a pressing operation, the resistance value of the film pressure sensor changes, so that the voltage of the second end of the film pressure sensor changes, and the voltage change is detected by the analog-to-digital converter and converted into digital quantity.
4. An input module as recited in claim 3,
the working power supply and the analog-to-digital converter are both arranged in a sampling chip;
the sampling chip is a single chip microcomputer with a serial interface, and digital quantity obtained by conversion of the analog-to-digital converter is sent to a main processing unit of the intelligent terminal.
5. An input module as recited in claim 3,
the voltage of the working power supply is 5 volts;
the resistance value of the sampling resistor is 300-700 ohms.
6. The input module of claim 1,
the film pressure sensor is arranged in the center of the bottom of the screen of the intelligent terminal.
7. The input module of claim 6,
the fingerprint sensor is a wiping type sensor and receives sliding operation of a user.
8. The input module of claim 6 or 7,
the second sampling circuit comprises a gain circuit, a control chip and an interface circuit.
9. The input module of claim 6 or 7,
the fingerprint acquisition unit is packaged by adopting a stacking packaging technology.
10. An intelligent terminal is characterized in that a terminal body is provided with a plurality of terminals,
the intelligent terminal comprises the input module of claim 1.
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| CN201711459888.5A CN108196711B (en) | 2017-12-28 | 2017-12-28 | Input module of intelligent terminal and intelligent terminal with input module |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711459888.5A CN108196711B (en) | 2017-12-28 | 2017-12-28 | Input module of intelligent terminal and intelligent terminal with input module |
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| CN108196711A CN108196711A (en) | 2018-06-22 |
| CN108196711B true CN108196711B (en) | 2021-04-20 |
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| CN107506121A (en) * | 2017-08-17 | 2017-12-22 | 惠州Tcl移动通信有限公司 | A kind of key control method, storage medium and intelligent terminal |
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