CN207302013U - Display screen state control system - Google Patents
Display screen state control system Download PDFInfo
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- CN207302013U CN207302013U CN201721444086.2U CN201721444086U CN207302013U CN 207302013 U CN207302013 U CN 207302013U CN 201721444086 U CN201721444086 U CN 201721444086U CN 207302013 U CN207302013 U CN 207302013U
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- magnetic resistance
- display screen
- leather sheath
- terminal device
- pcb board
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Abstract
The utility model provides a kind of display screen state control system.The system comprises leather sheath body and it is accommodated in the intrinsic terminal device of leather sheath.The leather sheath part for the display screen that leather sheath body is used to cover terminal device can be overturn relative to display screen.Magnet is provided with leather sheath part for the display screen for covering terminal device.When terminal device covers display screen in leather sheath part, magnetic resistance is provided with the position opposite with magnet positions.Terminal device includes one and is electrically connected with magnetic resistance, for gathering the collecting unit of magnetic resistance power on signal.Terminal device further include one with collecting unit be electrically connected be used for leather sheath part close to display screen or leather sheath partially away from display screen when according to collecting unit gather electric signal, control display screen curtain breath screen or bright screen control unit.Thus, the system obtains the relation of leather sheath part and terminal device according to the electric signal on magnetic resistance, and then the dispaly state of display screen is controlled.
Description
Technical field
Detection technique field is the utility model is related to, in particular to a kind of display screen state control system.
Background technology
With the development of terminal device, terminal device has been essentially all touch-screen manipulation, and the display of terminal device
Screen is all very big, meanwhile, in order to meet ergonomic designs, terminal device is essentially all straight panel structure.Due to touch-screen
Material is glass, and straight panel touch screen terminal equipment in use, has and easily leaves cut, breaks screen glass into pieces not
Foot, therefore, people will often add a leather sheath on the terminal device, to protect end when using straight panel touch screen terminal equipment
End equipment.
The touch-screen straight panel terminal device that collocation leather sheath uses, in order to prevent in the case where leather sheath is closed, leather sheath contact
Touch-screen causes maloperation, it is necessary to close touch-screen and extinguish screen；Meanwhile in order to be opened in people when leather sheath is operated
Conveniently, it is necessary to light screen.In order to complete the operation requirement of the above, it is necessary to which terminal device supervises the on off state of leather sheath
Survey, in leather sheath opening or the action closed, to perform corresponding screen control operation.
Utility model content
In order to overcome above-mentioned deficiency of the prior art, technical problem to be solved in the utility model is to provide a kind of aobvious
Show screen state control system, it can obtain leather sheath part and terminal device according to the electric signal on the magnetic resistance in terminal device
Relation, and then control display screen curtain breath screen or bright screen.
The utility model embodiment provides a kind of display screen state control system, and the system comprises leather sheath body and receipts
The intrinsic terminal device of the leather sheath is contained in, the leather sheath body is used for the leather sheath for covering the display screen of the terminal device
Part can be overturn relative to the display screen；
Magnet is provided with the leather sheath part for the display screen for covering the terminal device；
When the terminal device covers the display screen in the leather sheath part, the position opposite with the magnet positions
On be provided with magnetic resistance；
The terminal device includes one and is electrically connected with the magnetic resistance, for gathering the collection list of the magnetic resistance power on signal
Member；
The terminal device, which further includes one and is electrically connected with the collecting unit, to be used in the leather sheath part close to described
The electric signal gathered when display screen or the leather sheath are partially away from the display screen according to the collecting unit, described in control
The control unit of display screen breath screen or bright screen.
In the utility model embodiment, the magnetic resistance is embedded in the pcb board of the terminal device.
In the utility model embodiment, the collecting unit includes constant-current source, and the constant-current source connects via the magnetic resistance
Ground, the signal acquisition terminal of the collecting unit are arranged between the constant-current source and the magnetic resistance, and the collecting unit gathers magnetic
Voltage signal in resistance.
In the utility model embodiment, described control unit includes a hysteresis loop comparator, and the hysteresis loop comparator is born
It is electrically connected to the signal acquisition terminal of input terminal and the collecting unit.
In the utility model embodiment, the magnetic resistance includes multiple magnetoresistive elements, side of multiple magnetoresistive elements to be laminated
Formula is embedded in the pcb board, and adjacent magnetoresistive element links together.
In the utility model embodiment, an accommodating cavity is provided with the pcb board, the magnetic resistance is contained in the appearance
Put in cavity, one end of the magnetic resistance and the ground wire of the pcb board are electrically connected, and the other end of the magnetic resistance electrically connects with conducting wire
Connect, the conducting wire is electrically connected by the through hole on the pcb board and the pad of the pcb board upper surface.
In the utility model embodiment, the constant-current source is electrically connected with the pad, and the constant-current source passes through described
Conducting wire forms path with the magnetic resistance and ground wire.
In the utility model embodiment, the pcb board includes dielectric layer and metal conducting layer, and the accommodating cavity is set
In the dielectric layer, the ground wire and conducting wire, which bury, to be filled out in the metal conducting layer.
In the utility model embodiment, the metal conducting layer is copper sheet layer.
In the utility model embodiment, the magnetic resistance is fabricated using permalloy.
In terms of existing technologies, the utility model has the advantages that：
The utility model embodiment provides a kind of display screen state control system.The system comprises leather sheath body and receipts
It is contained in the intrinsic terminal device of the leather sheath.The leather sheath body is used for the leather sheath for covering the display screen of the terminal device
Part can be overturn relative to the display screen.Set on the leather sheath part for the display screen for covering the terminal device
It is equipped with magnet.When the terminal device covers the display screen in the leather sheath part, the position opposite with the magnet positions
Put and be provided with magnetic resistance.The terminal device includes one and is electrically connected with the magnetic resistance, for gathering the magnetic resistance power on signal
Collecting unit.The terminal device, which further includes one and is electrically connected with the collecting unit, to be used in the leather sheath part close to institute
The electric signal gathered when stating display screen or the leather sheath partially away from the display screen according to the collecting unit, controls institute
State the control unit of display screen breath screen or bright screen.
In the leather sheath part of the display screen for covering the terminal device during display screen upset relatively, due to
The resistivity of magnetic resistance changes with changes of magnetic field, therefore can obtain the leather sheath part and terminal according to the electric signal on magnetic resistance
The relation of equipment, and then control the display screen breath screen or bright screen.
To enable the above-mentioned purpose of utility model, feature and advantage to become apparent, the utility model cited below particularly is preferable
Embodiment, and attached drawing appended by cooperation, are described in detail below.
Brief description of the drawings
, below will be to required use in embodiment in order to illustrate more clearly of the technical solution of the utility model embodiment
Attached drawing be briefly described, it will be appreciated that the following drawings illustrate only some embodiments of the utility model, therefore should not be by
Regard the restriction to scope as, for those of ordinary skill in the art, without creative efforts, may be used also
To obtain other relevant attached drawings according to these attached drawings.
Fig. 1 is one of structure diagram of display screen state control system that the utility model embodiment provides.
Fig. 2 is the block diagram for the display screen state control system that the utility model embodiment provides.
Fig. 3 is the second structural representation for the display screen state control system that the utility model embodiment provides.
Fig. 4 is the working state schematic representation for the control unit that the utility model embodiment provides.
Fig. 5 is the structure diagram for the magnetic resistance that the utility model embodiment provides.
Fig. 6 is the third structural representation for the display screen state control system that the utility model embodiment provides.
Fig. 7 is one of the pcb board design that the utility model embodiment provides and machining sketch chart signal.
Fig. 8 is the two of the pcb board design that the utility model embodiment provides and machining sketch chart signal.
Fig. 9 is the three of the pcb board design that the utility model embodiment provides and machining sketch chart signal.
Figure 10 is the four of the pcb board design that the utility model embodiment provides and machining sketch chart signal.
Icon：10- display screen state control systems；110- leather sheath bodies；115- leather sheaths part；120- magnet；201-
Display screen；202-PCB plates；2021- dielectric layers；2022- metal conducting layers；2024- through holes；2025- pads；203- magnetic resistance；
2031- magnetoresistive elements；210- collecting units；220- control units.
Embodiment
Below in conjunction with attached drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out clear
Chu, be fully described by, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole realities
Apply example.The component of the utility model embodiment being usually described and illustrated herein in the accompanying drawings can be come with a variety of configurations
Arrangement and design.
Therefore, requirement is not intended to limit to the detailed description of the embodiment of the utility model provided in the accompanying drawings below
The scope of the utility model of protection, but it is merely representative of the selected embodiment of the utility model.Reality based on the utility model
Example is applied, those skilled in the art's all other embodiments obtained on the premise of creative work is not made, belong to
The scope of the utility model protection.
It should be noted that：Similar label and letter represents similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined, then it further need not be defined and explained in subsequent attached drawing in a attached drawing.
, it is necessary to explanation in the description of the utility model, term " " center ", " on ", " under ", it is "left", "right", " perpendicular
Directly ", the orientation of the instruction such as " level ", " interior ", " outer " or position relationship be based on orientation shown in the drawings or position relationship, or
The utility model product using when the orientation usually put or position relationship, be for only for ease of description the utility model and letter
Change description, rather than instruction or imply signified device or element must have specific orientation, with specific azimuth configuration and
Operation, therefore it is not intended that limitation to the utility model.In addition, term " first ", " second ", " the 3rd " etc. are only used for area
Divide description, and it is not intended that instruction or hint relative importance.
In addition, the term such as term " level ", " vertical ", " pendency " is not offered as requiring component abswolute level or pendency, and
It is to be slightly tilted.Such as " level " only refers to that its direction is more horizontal with respect to for " vertical ", is not to represent the structure
Have to fully horizontally, but can be slightly tilted.
In the description of the utility model, it is also necessary to which explanation, unless otherwise clearly defined and limited, term " are set
Put ", " installation ", " connected ", " connection " should be interpreted broadly, for example, it may be fixedly connected or be detachably connected,
Or it is integrally connected；Can mechanically connect or be electrically connected；It can be directly connected, intermediary can also be passed through
It is indirectly connected, can is the connection inside two elements.For the ordinary skill in the art, can be managed with concrete condition
Solve concrete meaning of the above-mentioned term in the utility model.
Below in conjunction with the accompanying drawings, elaborate to some embodiments of the utility model.In the case where there is no conflict, under
Feature in the embodiment and embodiment stated can be mutually combined.
Refer to Fig. 1 and Fig. 2, Fig. 1 be the display screen state control system 10 that the utility model embodiment provides knot
One of structure schematic diagram, Fig. 2 are the block diagrams for the display screen state control system 10 that the utility model embodiment provides.Institute
Stating display screen state control system 10 includes leather sheath body 110 and the terminal device being accommodated in the leather sheath body 110.
Wherein, the terminal device may be, but not limited to, smart mobile phone, tablet computer etc..
In the present embodiment, the leather sheath body 110 is used for the leather sheath portion for covering the display screen 201 of the terminal device
Points 115 can relatively described display screen 201 overturn.Specifically, the leather sheath body 110 can include leather sheath part 115, bottom case
Part and leather sheath coupling part.The bottom housing section is used to carry the terminal device, and the leather sheath part 115 is through the leather sheath
Coupling part is connected with the bottom housing section, and can relatively described bottom housing section upset by the leather sheath coupling part.
In the present embodiment, set on the leather sheath part 115 for the display screen 201 for covering the terminal device
There is magnet 120.When the terminal device covers the display screen 201 in the leather sheath part 115, with the magnet 120
Put and magnetic resistance 203 is provided with opposite position.As shown in Figure 1, it is covered in the display screen 201 in the leather sheath part 115
When upper, the magnet 120 is opposite with the magnetic resistance 203.
In the present embodiment, the terminal device includes collecting unit 210 and the control unit 220 being electrically connected.It is described
Collecting unit 210 is electrically connected with the magnetic resistance 203, for gathering 203 power on signal of magnetic resistance.Described control unit 220
For in the leather sheath part 115 close to the display screen 201 or the leather sheath part 115 away from the display screen 201
When the electric signal that is gathered according to the collecting unit 210, control the display screen 201 breath screen or bright screen.Due to magnetic resistance 203
Resistivity can change with changes of magnetic field, and the change of the state (whether being covered on display screen 201) of leather sheath part 115
The change in magnetic field can then be caused.Therefore, described control unit 220 can be according on the magnetic resistance 203 that the collecting unit 210 obtains
Electric signal, is controlled the dispaly state of display screen 201.
Referring once again to Fig. 1, the magnetic resistance 203 is embedded in pcb board (the Printed Circuit of the terminal device
Board printed circuit boards) in 202.Since current PCB buries resistance buried capacitor technics comparing maturation, resistance can be buried by PCB
Magnetic resistance 203 is embedded in the pcb board 202 of the terminal device by buried capacitor technique.
The magnetic resistance 203 is embedded in the pcb board 202 of the terminal device, can be avoided due to using Hall sensor
The deficiency brought with magnet 120.For example Hall sensor is arranged on 202 surface of pcb board, is generally stored with terminal device
Magnet (such as the magnet on receiver, magnet on loudspeaker etc.), and Hall sensor forms magnet in big current path
Magnetic field it is all very sensitive, therefore, Hall sensor need as far as possible away from these magnetic interference sources.And the table of pcb board 202
Also there are other on face need to weld device, these devices have a significant impact for the layout of Hall sensor, it is possible to so that suddenly
You cannot be placed on preferable position sensor, and then influence the performance of Hall sensor.In addition, Hall sensor is arranged on
On 202 surface of pcb board, or influence pcb board 202 can layout area so that the layout area of pcb board 202 is reduced, and terminal is set
Standby layout density is very high, reduce pcb board 202 can layout area can to PCB be laid out bring very big challenge.Can also at the same time
Increase BOM (Bill of Materials, bill of materials) cost.
And magnet 120 and magnetic resistance 203 are used, by the way that magnetic resistance 203 is embedded in the pcb board 202, can be set to avoid terminal
Standby influence of the middle magnet to magnetic resistance 203, while the layout area on 202 surface of pcb board can also be not take up.
Referring once again to Fig. 2, the collecting unit 210 can include a constant-current source, and the constant-current source is via the magnetic resistance
203 ground connection.The signal acquisition terminal of the collecting unit 210 is arranged between the constant-current source and the magnetic resistance 203, the collection
Unit 210 gathers the voltage signal on the magnetic resistance 203.
In the present embodiment, described control unit 220 can include a hysteresis loop comparator.The negative sense of the hysteresis loop comparator
The signal acquisition terminal of input terminal and the collecting unit 210 is electrically connected, using the voltage signal on the magnetic resistance 203 as defeated
Enter.The positive input of the hysteresis loop comparator is electrically connected with hysteresis loop.
Specifically, the hysteresis loop includes first resistor R1 and second resistance R2.The hysteresis loop comparator it is positive defeated
Enter endpoint to be electrically connected between the first resistor R1 and second resistance R2.Described second resistance R2 one end and voltage source electricity
Property connection, the output terminal of the other end of the second resistance R2 through the first resistor and the hysteresis loop comparator is electrically connected.
Fig. 1 to Fig. 4 is refer to, Fig. 3 is the knot for the display screen state control system 10 that the utility model embodiment provides
Two, Fig. 4 of structure schematic diagram is the working state schematic representation for the control unit 220 that the utility model embodiment provides.Below to profit
Leather sheath part 115 is detected with magnetic resistance 203 and the principle of 201 relation of display screen is described in detail.
The resistance value of some metals or semiconductor is known as magnetoresistance with the phenomenon that externally-applied magnetic field changes and changes, and has magnetic
The device of inhibition effect is known as magnetic resistance.The change of the resistivity of magnetic resistance, is pressed from both sides with the direction in the current direction in magnetic resistance and residing magnetic field
Angle and magnetic field intensity are related.Specifically, in the case of the magnetostatic field that magnetic field is fixed for intensity, when the electric current in magnetic resistance and magnetic field
When direction is vertical, the change in resistance of magnetic resistance is maximum；When the electric current in magnetic resistance is parallel with magnetic direction, the resistivity of magnetic resistance becomes
Change minimum or unchanged.Wherein, typical magnetostatic field such as earth magnetic field.
If the current strength size passed through in magnetic resistance 203 and direction are fixed, the change in resistance of magnetic resistance 203 mainly with
Lower two factors are related.
1. the influence of earth magnetostatic field, when embedment terminal device pcb board 202 magnetic resistance 203 with terminal device posture
Change and when changing, the current direction and the angle in earth magnetic field direction that flow through magnetic resistance 203 change, so that magnetic resistance
203 resistivity changes.And when the current direction for flowing through magnetic resistance 203 is vertical with earth magnetic field direction, the electricity of magnetic resistance 203
The change of resistance rate is maximum, is denoted as Δ ρ1, the resistance variations of magnetic resistance 203 are denoted as Δ R1。
2. the influence of the magnet 120 in leather sheath part 115, when leather sheath part 115 is rotated to cover around leather sheath coupling part
Cover on display screen 201 or when not being covered on display screen 201, since the relative position of magnet 120 and magnetic resistance 203 occurs
Change so that relative position of the magnetic resistance 203 in the magnetic field that magnet 120 produces changes, so that the magnetic by magnetic resistance 203
Field intensity changes, and then causes the resistivity of magnetic resistance 203 to change.As shown in figure 3, when leather sheath body 110 open to
When maximum, the change in resistance of magnetic resistance 203 is denoted as Δ ρ as caused by magnet 1202, the resistance variations of magnetic resistance 203 are denoted as Δ R2.Such as
Shown in Fig. 1, when leather sheath body 110 is closed, the change in resistance of magnetic resistance 203 is denoted as Δ ρ as caused by magnet 1203, magnetic resistance
203 resistance variations are denoted as Δ R3。
In the present embodiment, the leather sheath coupling part is when the leather sheath body 110 is opened to maximum, the leather sheath portion
The magnet 120 divided in 115 still leaves relatively large distance with the magnetic resistance 203 in the pcb board 202.Thereby it is ensured that Δ ρ1+Δρ2＜ ＜
Δρ3, wherein, Δ ρ3Than Δ R1With Δ ρ2And be the bigger the better.Since the scantling of magnetic resistance 203 is fixed, Δ R1+ΔR2
＜ ＜ Δs R3。
Assuming that the resistance value in the case that magnetic resistance 203 influences in no magnetic field is R0.Scope of activities in leather sheath part 115
Interior, the resistance value of magnetic resistance 203 changes and changes with the position relationship of the magnet 120 in magnetic resistance 203 and leather sheath part 115.Magnetic resistance 203
The voltage change range at both ends is I*R0<Vsen≤I*(R0+ΔR3).Wherein, when leather sheath body 110 completely closes, also
It is when being covered in leather sheath part 115 on display screen 201, the voltage at 203 both ends of magnetic resistance reaches the maximum of above formula.
As shown in Fig. 2, the negative input voltage of hysteresis loop comparator is Vsen, the positive input voltage of hysteresis loop comparator
For VT, the voltage source voltage of hysteresis loop is Vref, the output end voltage of hysteresis loop comparator is Vo.Circuit is understood as shown in Figure 2, defeated
It is V to go out terminal voltageoIt is V with positive input voltageTRelation be：
When leather sheath body 110 is opened, the output terminal output high level of hysteresis loop comparatorVsen voltage swings are：
I*R0≤Vsen_open≤I*(R0+ΔR1+ΔR2) (2)
When leather sheath body 110 is in open mode, the resistance of magnetic resistance 203 diminishes on pcb board 202,203 both ends of magnetic resistance
Voltage meets the requirement of formula (2).When leather sheath body 110 is opened, the voltage max at 203 both ends of magnetic resistance is I* (R0+ Δs R1+ΔR2
+ΔR3).At this time, Vsen_open is less than VT, therefore,
V in formula (1)refValue should ensure thatMeet the requirement of formula (3).
When leather sheath body 110 is closed, the output terminal output high level of hysteresis loop comparatorMagnetic resistance on pcb board 202
203 resistance value becomes maximum value R0+ Δs R3, the voltage at 203 both ends of magnetic resistance is I* (R0+ Δs R at this time3), at this time, Vsen_
Close is more thanTherefore,
V in formula (1)refValue should ensure thatMeet the requirement of formula (4).
Hysteresis loop comparator can be avoided in the opening procedure of leather sheath body 110, and the movement of magnet 120 causes 203 liang of magnetic resistance
Display screen 201 frequently switches on caused by Near Threshold concussion of the voltage at end in comparator.Hysteresis voltage is：
The operation of leather sheath body 110 and the relation of formula (5) are as shown in Figure 4.
When leather sheath body 110 is opened, the output terminal output high level of hysteresis loop comparatorControl the display screen
201 bright screens.When leather sheath body 110 is closed, the output terminal output high level of hysteresis loop comparatorControl the display screen
201 breath screens.
First resistor R1, second resistance R2, constant-current source I and voltage source V may be set according to actual conditionsrefValue.
Fig. 5 is refer to, Fig. 5 is the structure diagram for the magnetic resistance 203 that the utility model embodiment provides.The magnetic resistance 203
It can include multiple magnetoresistive elements 2031.Multiple magnetoresistive elements 2031 are embedded in a manner of stacking in the pcb board 202, phase
Adjacent magnetoresistive element 2031 links together.It can strengthen the Lorentz force direction that carrier is produced to magnetic field through the above way
Deflection, so that further increase the drift path of carrier, so that the change in resistance of the entirety of magnetic resistance 203 is more obvious, increase
Sensitivity of the magnetic resistance 203 to magnetic field.
Fig. 6 is refer to, Fig. 6 is the structural representation for the display screen state control system 10 that the utility model embodiment provides
The three of figure.An accommodating cavity is provided with the pcb board 202, the magnetic resistance 203 is contained in the accommodating cavity body.The magnetic
One end of resistance 203 is electrically connected with the ground wire of the pcb board 202, and the other end and the conducting wire of the magnetic resistance 203 are electrically connected.Institute
Conducting wire is stated to be electrically connected by the through hole 2024 on the pcb board 202 and the pad 2025.The perseverance of the collecting unit 210
Stream source is electrically connected with the pad 2025, and the constant-current source forms path by the conducting wire and the magnetic resistance 203 and ground wire.
Wherein, the pad 2025 is arranged on 202 surface of pcb board.
Referring once again to Fig. 6, the pcb board 202 includes dielectric layer 2021 and metal conducting layer 2022.The accommodating cavity
The dielectric layer 2021 is arranged on, the ground wire and conducting wire, which bury, to be filled out in the metal conducting layer 2022.
Specifically, the constant-current source of collecting unit 210 injects constant current to magnetic resistance 203, magnetic field where magnetic resistance 203 is subject to
Influence, resistivity produces change, and since 203 size of magnetic resistance is fixed, the resistance value of magnetic resistance 203 changes.Again due to flowing through magnetic resistance
203 current value is fixed, therefore the voltage on magnetic resistance 203 changes.Further, since copper there is no magnetoresistance, because
The resistance of this conducting wire, through hole 2024 and pad 2025 is constant, and the voltage of conducting wire, through hole 2024 and pad 2025 is constant.Therefore, pass through
The voltage change that pad 2025 measures can magnetic reaction fields for the effect for the magnetic resistance 203 being embedded in pcb board 202.
In the embodiment of the present embodiment, the metal conducting layer 2022 is copper sheet layer.
In the present embodiment, the magnetic resistance 203 can be fabricated using permalloy.Permalloy refers to that iron nickel closes
Gold, permalloy nickel content is between 35%-90%.The maximum feature of permalloy is：With very high low-intensity magnetic field permeability；
With different from common metal, very strong magnetoresistance, it is generally used to as magnetoresistive sensor, giant magneto-resistance sensor etc..
The elements such as Mo, Cr, Cu are commonly incorporated into Fe-Ni bianry alloys, resistivity is can further improve, improves the sensitive of magnetoresistive sensor
Degree.
In the embodiment of the present embodiment, the kinds of processes modes such as plating, magnetic control sputtering plating can be used by the perm
Alloy is integrated on the pcb board 202.
Fig. 7 to Figure 10 is refer to, pcb board 202 is introduced so that magnetic resistance 203 is permalloy as an example below and designs and processing side
Method.
On the internal layer copper sheet for needing embedded permalloy, suitable permalloy magnetoresistive film is electroplated.On the slope of plating
Photoresists are not coated on alloy magnetoresistive film, is then exposed, develops, removes photoresist and etches, so as to obtain the magnetic resistance shown in Fig. 5
203 structures.Next cured photoresists in Fig. 8 are divested, prepreg dielectric layer are closed in permalloy magnetoresistive film face pressure,
So as to obtain the structure shown in Fig. 9.Finally according to normal PCB processing technologys, coated on copper face photoresists, exposure, development,
Remove photoresist and etch, so as to obtain the structure shown in Figure 10.
Further, the line pattern of other layers is processed according to normal PCB processing technologys, is pressed, obtain after patch as
The PCB construction and integrated circuit that are integrated with magnetic resistance 203 shown in Fig. 6.
In conclusion the utility model provides a kind of display screen state control system.The system comprises leather sheath body
And it is accommodated in the intrinsic terminal device of the leather sheath.The leather sheath body is used for the display screen for covering the terminal device
Leather sheath part can be overturn relative to the display screen.The leather sheath part of the display screen for being used to cover the terminal device
On be provided with magnet.It is opposite with the magnet positions when terminal device covers the display screen in the leather sheath part
Position on be provided with magnetic resistance.The terminal device includes one and is electrically connected with the magnetic resistance, is powered on for gathering the magnetic resistance
The collecting unit of signal.The terminal device, which further includes one and is electrically connected with the collecting unit, to be used to lean in the leather sheath part
The electric signal gathered when the nearly display screen or the leather sheath are partially away from the display screen according to the collecting unit, control
Make the control unit of the display screen breath screen or bright screen.
In the leather sheath part of the display screen for covering the terminal device during display screen upset relatively, due to
The resistivity of magnetic resistance changes with changes of magnetic field, therefore can obtain the leather sheath part and terminal according to the electric signal on magnetic resistance
The relation of equipment, and then control the display screen breath screen or bright screen.Magnetic resistance is arranged in pcb board at the same time, is not take up PCB's
Surface area so that the influence that magnetic resistance is laid out from PCB surface, can be laid out in place, while reduce BOM costs.
The above descriptions are merely preferred embodiments of the present invention, is not intended to limit the present invention, for this
For the technical staff in field, various modifications and changes may be made to the present invention.It is all in the spirit and principles of the utility model
Within, any modification, equivalent replacement, improvement and so on, should be included within the scope of protection of this utility model.
Claims (10)
1. a kind of display screen state control system, it is characterised in that the system comprises leather sheath body and be accommodated in the skin
Intrinsic terminal device is covered, the leather sheath part for the display screen that the leather sheath body is used to cover the terminal device can be opposite
Overturn in the display screen；
Magnet is provided with the leather sheath part for the display screen for covering the terminal device；
When the terminal device covers the display screen in the leather sheath part, set on the position opposite with the magnet positions
It is equipped with magnetic resistance；
The terminal device includes one and is electrically connected with the magnetic resistance, for gathering the collecting unit of the magnetic resistance power on signal；
The terminal device, which further includes one and is electrically connected with the collecting unit, to be used in the leather sheath part close to the display
The electric signal gathered when screen or the leather sheath are partially away from the display screen according to the collecting unit, controls the display
The control unit of screen breath screen or bright screen.
2. system according to claim 1, it is characterised in that the magnetic resistance is embedded in the pcb board of the terminal device.
3. system according to claim 2, it is characterised in that the collecting unit includes constant-current source, the constant-current source warp
It is grounded by the magnetic resistance, the signal acquisition terminal of the collecting unit is arranged between the constant-current source and the magnetic resistance, described to adopt
Collect the voltage signal on unit collection magnetic resistance.
4. system according to claim 3, it is characterised in that described control unit includes a hysteresis loop comparator, described stagnant
The signal acquisition terminal of the negative input and the collecting unit that return comparator is electrically connected.
5. system according to claim 4, it is characterised in that the magnetic resistance includes multiple magnetoresistive elements, multiple magnetic resistance members
Part is embedded in a manner of being laminated in the pcb board, and adjacent magnetoresistive element links together.
6. system according to claim 5, it is characterised in that an accommodating cavity, the magnetic resistance are provided with the pcb board
It is contained in the accommodating cavity body, one end of the magnetic resistance and the ground wire of the pcb board are electrically connected, the other end of the magnetic resistance
It is electrically connected with conducting wire, the conducting wire is electrically connected by the through hole on the pcb board and the pad of the pcb board upper surface.
7. system according to claim 6, it is characterised in that the constant-current source is electrically connected with the pad, the perseverance
Stream source forms path by the conducting wire and the magnetic resistance and ground wire.
8. system according to claim 6, it is characterised in that the pcb board includes dielectric layer and metal conducting layer, described
Accommodating cavity is arranged on the dielectric layer, and the ground wire and conducting wire, which bury, to be filled out in the metal conducting layer.
9. system according to claim 8, it is characterised in that the metal conducting layer is copper sheet layer.
10. according to the system described in any one in claim 1-9, it is characterised in that the magnetic resistance uses permalloy system
Make and form.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721444086.2U CN207302013U (en) | 2017-11-02 | 2017-11-02 | Display screen state control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721444086.2U CN207302013U (en) | 2017-11-02 | 2017-11-02 | Display screen state control system |
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| CN207302013U true CN207302013U (en) | 2018-05-01 |
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| CN201721444086.2U Expired - Fee Related CN207302013U (en) | 2017-11-02 | 2017-11-02 | Display screen state control system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109885202A (en) * | 2019-02-22 | 2019-06-14 | 合肥鑫晟光电科技有限公司 | A kind of touch base plate and its driving method and display device |
-
2017
- 2017-11-02 CN CN201721444086.2U patent/CN207302013U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109885202A (en) * | 2019-02-22 | 2019-06-14 | 合肥鑫晟光电科技有限公司 | A kind of touch base plate and its driving method and display device |
| CN109885202B (en) * | 2019-02-22 | 2020-12-01 | 合肥鑫晟光电科技有限公司 | Touch substrate, driving method thereof and display device |
| US11561640B2 (en) | 2019-02-22 | 2023-01-24 | Hefei Xinsheng Optoelectronics Technology Co., Ltd. | Touch substrate, driving method thereof and display device |
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