CN109753177B - Middle frame module - Google Patents
Middle frame module Download PDFInfo
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- CN109753177B CN109753177B CN201810603253.6A CN201810603253A CN109753177B CN 109753177 B CN109753177 B CN 109753177B CN 201810603253 A CN201810603253 A CN 201810603253A CN 109753177 B CN109753177 B CN 109753177B
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- middle frame
- detection sensor
- pressure detection
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Abstract
The embodiment of the application discloses center module, the center module is applied to in the terminal, just the back of the display screen at terminal hugs closely in the center module, the center module is used for supporting the display screen, the center module includes center and pressure detection sensor: the middle frame comprises a plurality of through holes which are distributed according to a preset rule; a pressure detection sensor is placed in the target through hole, clings to the back of the display screen through the target through hole, and is used for detecting the pressure value on the display screen; wherein the target via is any one of the plurality of vias. Like this, when the pressure detection sensor appears functional failure, at the in-process of maintenance, only need with the pressure detection sensor in the center module change can, and need not change whole display module assembly, avoided changing more device to cost of maintenance has significantly reduced.
Description
Technical Field
The application relates to the technical field of electronic equipment, in particular to a middle frame module.
Background
At present, the display module assembly of 3D touch-control function not only can respond to the position that the user pointed to touch the display screen, can also respond to the pressure that the finger pressed the display screen. The display module with the 3D touch function in the mobile terminal mainly detects the pressure value on the display screen in the display module through a capacitive sensor or a resistive sensor. The capacitance type sensor calculates the pressure applied to a display screen in the display module according to the change of capacitance value caused by the reduction of the air gap between the sensor sensing layer and the reference stratum; the resistance sensor is a resistance film usually, specifically, the resistance film is pasted on the back of a display screen in a display module, the resistance film can deform under the action of external force, and the resistance value can be changed when the resistance film deforms, so that the magnitude of the pressure value can be calculated according to the change of the resistance value.
Generally, a capacitive sensor requires the entire plane of a middle frame in a display module as a reference ground, and requires a certain air gap as a deformation space; if the structure in the display module is minute during the use, the performance of the capacitive sensor may be degraded, or even the function of the capacitive sensor may be disabled, for example, the air gap generally required by the capacitive sensor is 0.2mm, and once the structural deformation gap in the display module is 0, the pressure sensing function of the capacitive sensor may be disabled. The resistance sensor is sensitive to the ambient temperature during the data testing process, and if the ambient temperature does not meet the condition, the test value is easy to drift. Obviously, the capacitive sensor and the resistive sensor have high requirements for the detection environment of the pressure value, and the capacitive sensor or the resistive sensor is prone to malfunction.
However, in the conventional display module, the capacitive sensor and the resistive sensor need to be integrated with the display module, so that when the resistive sensor and the capacitive sensor fail, the whole display module in the mobile terminal needs to be replaced, resulting in more replaced devices and increased maintenance cost.
Disclosure of Invention
In order to solve the technical problem, the application provides a center module to hope when pressure detection sensor appears functional failure, at the in-process of maintenance, only need with the pressure detection sensor in the center module change can, and need not change whole display module assembly, avoided changing more device, thereby greatly reduced cost of maintenance.
The embodiment of the application discloses the following technical scheme:
the embodiment of the application provides a center module, the center module is applied to in the terminal, just the back of the display screen at terminal hugs closely in the center module, the center module is used for supporting the display screen, the center module includes center and pressure detection sensor:
the middle frame comprises a plurality of through holes which are distributed according to a preset rule;
a pressure detection sensor is placed in the target through hole, clings to the back of the display screen through the target through hole, and is used for detecting the pressure value on the display screen; wherein the target via is any one of the plurality of vias.
Optionally, a gasket is arranged between the pressure detection sensor and the back of the display screen, and pre-pressure between the gasket and the pressure detection sensor meets a preset condition.
Optionally, the preset condition includes that the pre-pressure is 1 newton to 3 newtons.
Optionally, the plurality of through holes includes three through holes or four through holes.
Optionally, the preset rule includes that the through holes are symmetrically distributed along a center line of the middle frame.
Optionally, if the plurality of through holes include four through holes, the preset rule includes that the four through holes are respectively arranged at a first target position, a second target position, a third target position and a fourth target position in the middle frame;
wherein the first target position, the second target position, the third target position, and the fourth target position are determined according to a trisection point of a long boundary of the middle frame and a trisection point of a wide boundary of the middle frame.
Optionally, each of the plurality of through holes has a diameter of 4 mm.
Optionally, the middle frame module further comprises a circuit board and a processing chip;
two ends of the circuit board are respectively connected with the pressure detection sensor and the processing chip;
the circuit board is used for sending the output signal of the pressure detection sensor to the processing chip;
the processing chip is used for converting the output signal into a digital signal.
Optionally, the processing chip is a micro control unit MCU.
Optionally, the pressure detection sensor is a micro-electromechanical system MEMS.
According to the technical scheme, the middle frame module provided by the embodiment of the application can comprise the middle frame and the pressure detection sensor. The middle frame comprises a plurality of through holes, and the through holes are distributed according to a preset rule. Each through-hole in these a plurality of through-holes all is provided with pressure detection sensor, and pressure detection sensor can hug closely the back in the display screen in the display module assembly through the through-hole in the center, and in this application promptly, pressure detection sensor in the center module assembly is not integrative with the display module assembly is integrated. Like this, when the pressure detection sensor appears functional failure, at the in-process of maintenance, only need with the pressure detection sensor in the center module change can, and need not change whole display module assembly, avoided changing more device to cost of maintenance has significantly reduced.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.
Fig. 1 is a schematic structural diagram of a middle frame module according to an embodiment of the present disclosure;
fig. 2 is a schematic structural diagram of a middle frame module according to an embodiment of the present disclosure;
fig. 3 is a schematic structural diagram of a middle frame module according to an embodiment of the present disclosure;
fig. 4 is a schematic structural diagram of a middle frame module according to an embodiment of the present disclosure.
Detailed Description
Embodiments of the present application are described below with reference to the accompanying drawings.
In traditional display module assembly, capacitanc sensor and resistance-type sensor all need be integrated as an organic whole with display module assembly, like this, when the functional failure appears in resistance-type sensor and capacitanc sensor, need change whole display module assembly in the mobile terminal, and the device that leads to changing is more, has increased cost of maintenance.
Therefore, the embodiment of the application provides a middle frame module, when hope that the pressure detection sensor appears functional failure, at the in-process of maintenance, only need with the pressure detection sensor in the middle frame module change can, and need not change whole display module assembly, avoided changing more device, thereby greatly reduced cost of maintenance.
In this embodiment, the description will be made from the perspective of a middle frame module, which may be specifically disposed in a terminal having a display screen, such as a mobile phone, a tablet computer, a Personal Digital Assistant (PDA), a notebook computer, and the like.
Fig. 1 is a schematic structural diagram of a middle frame module provided by the present application, the middle frame module includes a middle frame 200 and a pressure detection sensor 300, the middle frame module is applied to a terminal, and the back of a display screen 100 of the terminal is tightly attached to the middle frame module, for example, the back of the display screen 100 is tightly attached to the middle frame 200 in the middle frame module, and the middle frame module is used for supporting the display screen 100. It should be noted that, in one possible implementation, the display screen 100 may be an AMOLED display screen.
In this embodiment, the middle frame 100 may be a metal plate for mounting components and supporting the display screen 100, and the middle frame 100 may include a plurality of through holes 400. In one possible implementation, three through holes 400 or four through holes 400 may be included in the middle frame 100, and each of the plurality of through holes 400 may have a diameter of 4 mm. Also, the plurality of through holes 400 in the middle frame 100 may be distributed according to a preset rule, which will be described in detail later.
It should be noted that, for convenience of description, any one of the plurality of through holes of the middle frame 100 may be referred to as a target through hole. The pressure detection sensor 300 may be placed in the target through hole, and the pressure detection sensor 300 may be closely attached to the back surface of the display screen 100 through the target through hole. The pressure detection sensor 300 may be used to detect a pressure value received by the display screen 100. In one possible implementation, the pressure detecting sensor 300 may be a Micro-Electro-Mechanical System (MEMS), and since the structural deformation detected by the MEMS is in a micron level, when the pressure detecting sensor 300 is the MEMS, the accuracy of the pressure value detected by the pressure detecting sensor can be improved.
It can be understood that the pressure detecting sensor 300 in this embodiment is not integrated with the middle frame 200 and the display screen 100, but detachably connected with both the middle frame 200 and the display screen 100, so that only the pressure detecting sensor 300 in the middle frame module can be detached for replacement without replacing the whole display screen 300 or the middle frame 200.
It can be seen from the above technical solutions that the middle frame module provided in the embodiment of the present application may include a middle frame 200 and a pressure detection sensor 300. The middle frame 20 includes a plurality of through holes 400, and the through holes 400 are distributed according to a predetermined rule. Each through-hole in these a plurality of through-holes all is provided with pressure detection sensor 300, and pressure detection sensor 300 can hug closely the back in the display screen 100 in the display module assembly through-hole 400 in center 200, and in this application, pressure detection sensor 300 in the center module assembly is not integrative with display screen 100 is integrated. Like this, when pressure detection sensor 400 appears the functional failure, at the in-process of maintenance, only need with the pressure detection sensor 400 in the center module change can, and need not change whole display screen 100, avoided changing more device to cost of maintenance has significantly reduced.
Next, how the plurality of through holes 400 in the middle frame 100 are distributed according to a preset rule will be described. In one possible implementation manner of the present embodiment, the preset rule may include that the plurality of through holes in the middle frame 100 are symmetrically distributed along the center line of the middle frame, for example, the plurality of through holes may be symmetrically distributed along the center line of the long boundary of the middle frame 100, may be symmetrically distributed along the center line of the wide boundary of the middle frame 100, or may be symmetrically distributed along both the center line of the long boundary and the center line of the wide boundary of the middle frame 100.
As an example, as shown in fig. 2, if the middle frame 100 includes four through holes, the four through holes may be respectively disposed at a first target position a, a second target position B, a third target position C, and a fourth target position D in the middle frame 100.
The first target position a, the second target position B, the third target position C, and the fourth target position D are determined according to a trisection point of a long boundary of the middle frame 100 and a trisection point of a wide boundary of the middle frame 100. Specifically, it may be determined that trisection points of a first wide boundary (i.e., an upper wide boundary) are a point and b point, respectively, trisection points of a second wide boundary (i.e., a lower wide boundary) are g point and h point, trisection points of a first long boundary (i.e., a left long boundary) are c point and e point, respectively, trisection points of a second long boundary (i.e., a right long boundary) are d point and f point, respectively; then, the point a and the point g can be connected to form a line segment ag, the point b and the point h can be connected to form a line segment bh, the point c and the point d can be connected to form a line segment cd, and the point e and the point f can be connected to form a line segment ef; then, the intersection of the line segment ag and the line segment cd may be regarded as a first target position a, the intersection of the line segment bh and the line segment cd may be regarded as a second target position B, the intersection of the line segment ag and the line segment ef may be regarded as a third target position C, and the intersection of the line segment bh and the line segment ef may be regarded as a fourth target position D.
It is emphasized that, in practical applications, since the middle frame 100 may already be installed with a plurality of components, and the components are already installed on the first target position, the second target position, the third target position and/or the fourth target position, the four through holes in the middle frame 100 may be respectively disposed around the first target position, the second target position, the third target position and/or the fourth target position. In addition, if the middle frame 100 includes three through holes, the three through holes may be respectively disposed on or around any three of the first target position, the second target position, the third target position, and the fourth target position; if the middle frame 100 includes more than four through holes, the plurality of through holes may be disposed on or around the first target position, the second target position, the third target position, and the fourth target position, respectively.
It should be noted that, when the pressure detection sensor is closely attached to the back surface of the display screen through the through hole, a structural gap may exist between the pressure detection sensor and the display screen, which may cause an inaccurate pressure value detected by the pressure detection sensor.
Therefore, in an implementation manner of the embodiment of the application, in order to be able to improve the accuracy of the pressure value detected by the pressure detection sensor in the process of detecting the pressure applied to the display screen by the pressure detection sensor. As shown in fig. 3, a gasket 500 may be disposed between the pressure detection sensor 300 and the back surface of the display screen 100, for example, the gasket 500 may be a rubber gasket.
It should be noted that, in the process of disposing the gasket 500 between the pressure detecting sensor 300 and the back surface of the display screen 100, the pre-pressure between the gasket 500 and the pressure detecting sensor 300 may cover the assembly tolerance, so that the pre-pressure between the gasket 500 and the pressure detecting sensor satisfies the preset condition, for example, the preset condition may include that the pre-pressure between the gasket 500 and the pressure detecting sensor 300 is 1 newton (1N) to 3 newtons (3N). It is emphasized that, when the calibration test for the pressure detection sensor 300 is required, the calibration result may be adjusted according to the preload between the gasket 500 and the pressure detection sensor 300, so as to eliminate the influence of the preload on the calibration test.
It can be understood that when the pre-pressure between the gasket 500 and the pressure detecting sensor 300 satisfies the preset condition, the pressure detecting sensor 300 can be brought into close contact with the back surface of the display screen 100, i.e., there is no structural gap between the pressure detecting sensor 300 and the back surface of the display screen 100, so that the accuracy of the pressure value detected by the pressure detecting sensor 300 can be improved.
In an implementation manner of the embodiment of the present application, as shown in fig. 4, the middle frame module may further include a circuit board 600 and a processing chip 700.
Both ends of the circuit board 600 may be connected to the pressure detection sensor 300 and the processing chip, respectively, so that the circuit board 600 may be used to transmit the output signal of the pressure detection sensor 300 to the processing chip 700. In one possible implementation, the Circuit board 600 may be a Flexible Printed Circuit (FPC).
Because the output signal of the pressure detection sensor 300 is an analog signal, and the signals processed by the processor of the terminal are all digital signals, when the output signal of the pressure detection sensor 300 is an analog signal, the analog signal can be converted into a digital signal by the processing chip 700, that is, the processing chip 700 can be used to convert the output signal of the pressure detection sensor 300 into a digital signal, so that the processor in the terminal can determine the change of the pressure value received by the display screen 100 according to the converted digital signal, thereby calculating the pressure of the user pressing the display screen 100. In one possible implementation, the processing chip 700 may be a Micro Control Unit (MCU).
Those of ordinary skill in the art will understand that: all or part of the steps for realizing the method embodiments can be completed by hardware related to program instructions, the program can be stored in a computer readable storage medium, and the program executes the steps comprising the method embodiments when executed; and the aforementioned storage medium may be at least one of the following media: various media that can store program codes, such as read-only memory (ROM), RAM, magnetic disk, or optical disk.
It should be noted that, in the present specification, all the embodiments are described in a progressive manner, and the same and similar parts among the embodiments may be referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, for the apparatus and system embodiments, since they are substantially similar to the method embodiments, they are described in a relatively simple manner, and reference may be made to some of the descriptions of the method embodiments for related points. The above-described embodiments of the apparatus and system are merely illustrative, and the units described as separate parts may or may not be physically separate, and the parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
The above description is only one specific embodiment of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present application should be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (10)
1. The utility model provides a center module, its characterized in that, the center module is applied to in the terminal, just the back of the display screen at terminal hugs closely in the center module, the center module is used for supporting the display screen, the center module includes center and pressure detection sensor:
the middle frame comprises a plurality of through holes which are distributed according to a preset rule;
a pressure detection sensor is placed in the target through hole, the pressure detection sensor is tightly attached to the back face of the display screen through the target through hole, and the pressure detection sensor is not integrated with the display screen and is used for detecting the pressure value applied to the display screen; wherein the target via is any one of the plurality of vias.
2. The middle frame module according to claim 1, wherein a gasket is disposed between the pressure detection sensor and the back surface of the display screen, and a pre-pressure between the gasket and the pressure detection sensor satisfies a preset condition.
3. The middle frame module according to claim 2, wherein the predetermined condition includes the pre-pressure being 1 newton to 3 newtons.
4. The middle frame module according to any one of claims 1 to 3, wherein the plurality of through holes comprises three through holes or four through holes.
5. The middle frame module according to any one of claims 1 to 3, wherein the predetermined rule includes that the plurality of through holes are symmetrically distributed along a center line of the middle frame.
6. The middle frame module according to any one of claims 1 to 3, wherein if the plurality of through holes includes four through holes, the predetermined rule includes that the four through holes are respectively disposed at a first target position, a second target position, a third target position and a fourth target position in the middle frame;
wherein the first target position, the second target position, the third target position, and the fourth target position are determined according to a trisection point of a long boundary of the middle frame and a trisection point of a wide boundary of the middle frame.
7. The middle frame module according to any one of claims 1 to 3, wherein each of the plurality of through holes has a diameter of 4 mm.
8. The middle frame module according to any one of claims 1 to 3, further comprising a circuit board and a processing chip;
two ends of the circuit board are respectively connected with the pressure detection sensor and the processing chip;
the circuit board is used for sending the output signal of the pressure detection sensor to the processing chip;
the processing chip is used for converting the output signal into a digital signal.
9. The middle frame module according to claim 8, wherein the processing chip is a Micro Control Unit (MCU).
10. The middle frame module as claimed in any one of claims 1 to 3, wherein the pressure sensor is a micro-electro-mechanical system (MEMS).
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| CN201810603253.6A CN109753177B (en) | 2018-06-12 | 2018-06-12 | Middle frame module |
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| CN201810603253.6A CN109753177B (en) | 2018-06-12 | 2018-06-12 | Middle frame module |
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| CN109753177B true CN109753177B (en) | 2020-05-01 |
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| CN106169705A (en) * | 2016-09-30 | 2016-11-30 | 国网河南省电力公司南阳供电公司 | A kind of Intelligent transformer maintenance integrated apparatus |
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| CN205121520U (en) * | 2015-11-06 | 2016-03-30 | 惠州Tcl移动通信有限公司 | Display device and electronic apparatus containing same |
| CN105446569A (en) * | 2015-12-31 | 2016-03-30 | 华勤通讯技术有限公司 | Mobile terminal and capacitance pressure sensing device thereof |
| CN105426016A (en) * | 2015-12-31 | 2016-03-23 | 华勤通讯技术有限公司 | Mobile terminal and pressure sensing device thereof |
| CN206489535U (en) * | 2016-10-08 | 2017-09-12 | 南昌欧菲光科技有限公司 | Touch display unit |
| CN107193412B (en) * | 2017-04-27 | 2020-04-14 | Oppo广东移动通信有限公司 | Display screen, display device and mobile terminal |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204652340U (en) * | 2015-06-05 | 2015-09-16 | 深圳纽迪瑞科技开发有限公司 | Pressure sensitive press-key structure and there is the terminal equipment of this pressure sensitive press-key structure |
| CN106169705A (en) * | 2016-09-30 | 2016-11-30 | 国网河南省电力公司南阳供电公司 | A kind of Intelligent transformer maintenance integrated apparatus |
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