CN107340931A - A kind of pressure sensor, display panel and display device - Google Patents
A kind of pressure sensor, display panel and display device Download PDFInfo
- Publication number
- CN107340931A CN107340931A CN201710769304.8A CN201710769304A CN107340931A CN 107340931 A CN107340931 A CN 107340931A CN 201710769304 A CN201710769304 A CN 201710769304A CN 107340931 A CN107340931 A CN 107340931A
- Authority
- CN
- China
- Prior art keywords
- connection end
- resistance
- resistance unit
- display panel
- pressure sensing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0412—Digitisers structurally integrated in a display
-
- 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
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
- G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
- G06F2203/04103—Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
- G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
- G06F2203/04105—Pressure sensors for measuring the pressure or force exerted on the touch surface without providing the touch position
Abstract
The present invention provides a kind of pressure sensor, display panel and display device, and pressure sensor includes：At least one pressure sensing cells, the first connection end of pressure sensing cells and second connection end electrically connect with bias voltage circuit respectively, and the 3rd connection end and the 4th connection end electrically connect with voltage detecting circuit respectively；Pressure sensing cells include four resistance, and each resistance is electrically connected in the first connection end, second connection end, the 3rd connection end and the 4th connection end between the two, and each resistance includes the resistance unit of multiple series connection；Multiple resistance units between multiple resistance units between first connection end, the 3rd connection end, with the first connection end, the 4th connection end correspond；Multiple resistance units between multiple resistance units between second connection end, the 3rd connection end, with second connection end, the 4th connection end correspond.The present invention improves the detection accuracy of pressure sensor.
Description
Technical field
The present embodiments relate to Display Technique, more particularly to a kind of pressure sensor, display panel and display device.
Background technology
At present, the display panel with touch controllable function is widely used in mobile phone, flat board as a kind of information input tool
In the various display products of computer, the information enquiry machine etc. in public place hall.So, user only needs finger touch display panel
On mark can be realized as operation to the electronic equipment, eliminate user to other equipment (such as keyboard and mouse) according to
Rely, make man-machine interaction more simple.
In order to preferably meet the needs of user, generally it is provided for detecting user's touch display panel in display panel
When touch-control pressure value size pressure sensor, display panel is gathered position of touch information, and can adopt
Collect the size of touch-control pressure value, to enrich the application of touch-control Display Technique.All the time, how adherence pressure sensor
Detection accuracy is the important technology problem faced in the industry.
The content of the invention
The embodiment of the present invention provides a kind of pressure sensor, display panel and display device, and temperature is reduced to pressure to realize
The influence of force snesor, improve the detection accuracy of pressure sensor.
In a first aspect, the embodiment of the present invention provides a kind of pressure sensor, including：
At least one pressure sensing cells, the pressure sensing cells include the first connection end, second connection end, the 3rd company
End and the 4th connection end are connect, first connection end and the second connection end electrically connect with bias voltage circuit respectively, described
3rd connection end and the 4th connection end electrically connect with voltage detecting circuit respectively, and first connection end, described second connect
Connect end, the 3rd connection end and the 4th connection end and form Wheatstone bridge；
The pressure sensing cells include four resistance, each resistance be electrically connected in first connection end,
In the second connection end, the 3rd connection end and the 4th connection end between the two, and each resistance includes
The resistance unit of multiple series connection；
Multiple resistance units between first connection end, the 3rd connection end, with first connection end,
Multiple resistance units between 4th connection end correspond, one-to-one first connection end, described the
The resistance unit between three connection ends and the resistance unit phase between first connection end, the 4th connection end
Neighbour is set and distance is less than preset value；Multiple resistance units between the second connection end, the 3rd connection end, with
Multiple resistance units between the second connection end, the 4th connection end correspond, and one-to-one described the
Between the resistance unit and the second connection end, the 4th connection end between two connection ends, the 3rd connection end
The resistance unit be disposed adjacent and distance be less than preset value；Or
Multiple resistance units between 3rd connection end, first connection end, with the 3rd connection end,
Multiple resistance units between the second connection end correspond, one-to-one 3rd connection end, described the
The resistance unit between one connection end and the resistance unit phase between the 3rd connection end, the second connection end
Neighbour is set and distance is less than preset value；Multiple resistance units between 4th connection end, first connection end, with
Multiple resistance units between 4th connection end, the second connection end correspond, and one-to-one described the
Between the resistance unit and the 4th connection end, the second connection end between four connection ends, first connection end
The resistance unit be disposed adjacent and distance be less than preset value.
Second aspect, the embodiment of the present invention provide a kind of display panel, including the pressure sensor described in first aspect.
The third aspect, the embodiment of the present invention provide a kind of display device, including the display panel described in second aspect.
Pressure sensor provided in an embodiment of the present invention includes at least one pressure sensing cells, and the of pressure sensing cells
One connection end and second connection end electrically connect with bias voltage circuit respectively, the 3rd connection end and the 4th connection end respectively with voltage
Circuit electrical connection is detected, the first connection end, second connection end, the 3rd connection end and the 4th connection end form Wheatstone bridge, the
A resistance is serially connected between the two in one connection end, second connection end, the 3rd connection end and the 4th connection end, and the present invention is real
Apply by the way that each resistance to be arranged to the resistance unit for including multiple series connection, and it is more between the first connection end, the 3rd connection end
Multiple resistance units between individual resistance unit, with the first connection end, the 4th connection end correspond, second connection end, the 3rd
Multiple resistance units between connection end, multiple resistance units between second connection end, the 4th connection end correspond, or
Person, it is multiple between multiple resistance units between the 3rd connection end, the first connection end, with the 3rd connection end, second connection end
Resistance unit corresponds, multiple resistance units between the 4th connection end, the first connection end, connects with the 4th connection end, second
The multiple resistance units connect between end are corresponded, and one-to-one resistance unit is disposed adjacent and distance is less than preset value, i.e.,
One-to-one resistance unit temperature is identical, therefore the resistance unit between one-to-one first connection end, the 3rd connection end
Resistance unit temperature between the first connection end, the 4th connection end is identical, one-to-one second connection end, the 3rd connection end
Between resistance unit it is identical with the resistance unit temperature between second connection end, the 4th connection end, so as to reduce temperature pair
The influence (including pressure sensing cells) of pressure sensor, improve the detection accuracy of pressure sensor.
Brief description of the drawings
Fig. 1 is a kind of structural representation of pressure sensing cells provided in an embodiment of the present invention；
Fig. 2 is a kind of structural representation of pressure sensor provided in an embodiment of the present invention；
Fig. 3 is the mplifying structure schematic diagram of another pressure sensing cells provided in an embodiment of the present invention；
Fig. 4 is the structural representation of another pressure sensing cells provided in an embodiment of the present invention；
Fig. 5 is the structural representation of another pressure sensing cells provided in an embodiment of the present invention；
Fig. 6 is a kind of cross-sectional view of display panel provided in an embodiment of the present invention；
Fig. 7 provides the overlooking the structure diagram of another display panel for the embodiment of the present invention；
Fig. 8 provides the overlooking the structure diagram of another display panel for the embodiment of the present invention；
Fig. 9 provides a kind of overlooking the structure diagram of display panel for the embodiment of the present invention；
Figure 10 provides the overlooking the structure diagram of another display panel for the embodiment of the present invention；
Figure 11 is the mplifying structure schematic diagram of pressure sensing cells in Figure 10；
Figure 12 provides the overlooking the structure diagram of another display panel for the embodiment of the present invention；
Figure 13 is a kind of structural representation of display device provided in an embodiment of the present invention.
Embodiment
The present invention is described in further detail with reference to the accompanying drawings and examples.It is understood that this place is retouched
The specific embodiment stated is used only for explaining the present invention, rather than limitation of the invention.It also should be noted that in order to just
Part related to the present invention rather than entire infrastructure are illustrate only in description, accompanying drawing.
Applicant has found by further investigation, typically forms the pressure sensing cells in pressure sensor in existing design
Wheatstone bridge, and the size of the deformation quantity occurred when the output signal value of Wheatstone bridge is under pressure with display panel has
Close, but the resistance for forming Wheatstone bridge is in different temperature provinces, therefore the output signal value of Wheatstone bridge can also
Affected by temperature, temperature have impact on the detection accuracy of pressure sensor.Based on above-mentioned discovery, the application uses following technology
Scheme.
Fig. 1 is a kind of structural representation of pressure sensing cells provided in an embodiment of the present invention, as shown in figure 1, feeling of stress
Surveying unit includes four resistance, respectively first resistor R1, second resistance R2,3rd resistor R3 and the 4th resistance R4, feeling of stress
Four resistance for surveying unit connect to form Wheatstone bridge, and each resistance is located on an arm of Wheatstone bridge, the first electricity
Hinder R1 first end and the 4th resistance R4 first end be electrically connected to form the first connection end D1, second resistance R2 the second end with
And 3rd resistor R3 the second end is electrically connected to form second connection end D2, first resistor R1 the second end and second resistance R2's
First end is electrically connected to form the 3rd connection end S1, the 4th resistance R4 the second end and 3rd resistor R3 first end electrical connection shape
Into the 4th connection end S2.First connection end D1 and second connection end D2 electrically connect with bias voltage circuit respectively, for pressure
Sensing unit input offset voltage signal, the 3rd connection end S1 and the 4th connection end S2 electrically connect with voltage detecting circuit respectively,
For exporting pressure sensitivity detection signal from pressure sensing cells.Work as satisfactionWhen, the output signal value of Wheatstone bridge is
Zero, at this moment claim electric bridge to be in poised state, when not having ambient pressure, electric bridge should be at poised state, but due to forming
The resistance (including first resistor R1, second resistance R2,3rd resistor R3 and the 4th resistance R4) of Wheatstone bridge is different
Temperature province, cause electric bridge unbalance (also referred to as null offset), therefore the output signal value of Wheatstone bridge also suffers from temperature
Influence, temperature have impact on the detection accuracy of pressure sensor.
Fig. 2 is a kind of structural representation of pressure sensor provided in an embodiment of the present invention, and Fig. 3 carries for the embodiment of the present invention
The mplifying structure schematic diagram of another pressure sensing cells supplied, as shown in Figures 2 and 3, pressure sensor include at least one
Pressure sensing cells 20 (pressure sensor exemplarily includes a pressure sensing cells 20 in Fig. 2), pressure sensing cells 20
Positioned at the side of a substrate 10, substrate 10 can be rigid substrates or flexible base board.What arrow pointed in Fig. 2 is pressure sensing cells
20 mplifying structure schematic diagram, pressure sensing cells 20 include the first connection end D1, second connection end D2, the 3rd connection end S1 and
4th connection end S2, the first connection end D1 and second connection end D2 electrically connect with bias voltage circuit (not shown) respectively,
3rd connection end S1 and the 4th connection end S2 electrically connect with voltage detecting circuit (not shown) respectively, the first connection end D1,
Second connection end D2, the 3rd connection end S1 and the 4th connection end S2 form Wheatstone bridge；Pressure sensing cells 20 include four
Resistance, each resistance are electrically connected in the first connection end D1, second connection end D2, the 3rd connection end S1 and the 4th connection end S2
In between the two, and each resistance includes the resistance unit of multiple series connection；Between first connection end D1, the 3rd connection end S1
Multiple resistance units between multiple resistance units, with the first connection end D1, the 4th connection end S2 correspond.Correspondingly
The resistance between resistance unit and the first connection end D1, the 4th connection end S2 between first connection end D1, the 3rd connection end S1
Unit is disposed adjacent and distance is less than preset value.Multiple resistance units between second connection end D2, the 3rd connection end S1, with
Multiple resistance units between two connection end D2, the 4th connection end S2 correspond.One-to-one second connection end D2, the 3rd
Resistance unit between the S1 of connection end and second connection end D2, the 4th connection end S2 between resistance unit be disposed adjacent and distance
Less than preset value.Or multiple resistance units between the 3rd connection end S1, the first connection end D1, with the 3rd connection end S1,
Multiple resistance units between two connection end D2 correspond, between one-to-one 3rd connection end S1, the first connection end D1
Resistance unit be disposed adjacent with the resistance unit between the 3rd connection end S1, second connection end D2 and distance be less than preset value；
Between multiple resistance units between 4th connection end S2, the first connection end D1, with the 4th connection end S2, second connection end D2
Multiple resistance units correspond, the resistance unit and the 4th between one-to-one 4th connection end S2, the first connection end D1
Resistance unit between connection end S2, second connection end D2 is disposed adjacent and distance is less than preset value.
Specifically, resistance unit (the resistance unit R1a of two series connection is included with reference to figure 1, Fig. 2 and Fig. 3, first resistor R1
With resistance unit R1b), second resistance R2 includes the resistance unit (resistance unit R2a and resistance unit R2b) of two series connection, the
Three resistance R3 include the resistance unit (resistance unit R3a and resistance unit R3b) of two series connection, and the 4th resistance R4 includes two strings
The resistance unit (resistance unit R4a and resistance unit R4b) of connection.In one embodiment, as shown in Fig. 2 resistance unit R1a with
Resistance unit R2a is corresponding, and resistance unit R1b is corresponding with resistance unit R2b, and resistance unit R3a is relative with resistance unit R4a
Should, resistance unit R3b is corresponding with resistance unit R4b, and one-to-one resistance unit is disposed adjacent and distance is less than preset value,
I.e. one-to-one resistance unit temperature is identical, by formulaUnderstand, when pressure sensing cells use structure shown in Fig. 2
When, resistance R1 and R2 by temperature influenceed it is identical, R3 and R4 by temperature influenceed it is identical so that electric bridge is in equilibrium-like
State.In another embodiment, as shown in figure 3, resistance unit R1a is corresponding with resistance unit R4a, resistance unit R1b and electricity
Resistance unit R 4b is corresponding, and resistance unit R2a is corresponding with resistance unit R3a, and resistance unit R2b is relative with resistance unit R3b
Should, one-to-one resistance unit is disposed adjacent and distance is less than preset value, i.e., one-to-one resistance unit temperature is identical, by
FormulaUnderstand, when pressure sensing cells use structure shown in Fig. 3, resistance R1 and R4 by temperature influenceed it is identical,
R2 and R3 by temperature influenceed identical so that electric bridge is in poised state, reduce influence of the temperature to pressure sensor
(including pressure sensing cells).
Pressure sensor provided in an embodiment of the present invention includes at least one pressure sensing cells, and the of pressure sensing cells
One connection end and second connection end electrically connect with bias voltage circuit respectively, the 3rd connection end and the 4th connection end respectively with voltage
Circuit electrical connection is detected, the first connection end, second connection end, the 3rd connection end and the 4th connection end form Wheatstone bridge, the
A resistance is serially connected between the two in one connection end, second connection end, the 3rd connection end and the 4th connection end, and the present invention is real
Apply by the way that each resistance to be arranged to the resistance unit for including multiple series connection, and it is more between the first connection end, the 3rd connection end
Multiple resistance units between individual resistance unit, with the first connection end, the 4th connection end correspond, second connection end, the 3rd
Multiple resistance units between connection end, multiple resistance units between second connection end, the 4th connection end correspond, or
Person, it is multiple between multiple resistance units between the 3rd connection end, the first connection end, with the 3rd connection end, second connection end
Resistance unit corresponds, multiple resistance units between the 4th connection end, the first connection end, connects with the 4th connection end, second
The multiple resistance units connect between end are corresponded, and one-to-one resistance unit is disposed adjacent and distance is less than preset value, i.e.,
One-to-one resistance unit temperature is identical, therefore the resistance unit between one-to-one first connection end, the 3rd connection end
Resistance unit temperature between the first connection end, the 4th connection end is identical, one-to-one second connection end, the 3rd connection end
Between resistance unit it is identical with the resistance unit temperature between second connection end, the 4th connection end, so as to reduce temperature pair
The influence (including pressure sensing cells) of pressure sensor, improve the detection accuracy of pressure sensor.
Alternatively, referring to figs. 2 and 3 resistance unit is block resistance.One-to-one first connection end D1, the 3rd connect
The resistance unit connect between resistance unit and the first connection end D1, the 4th connection end S2 between the S1 of end be arranged in parallel；One a pair
Between resistance unit and second connection end D2, the 4th connection end S2 between the second connection end D2, the 3rd connection end S1 that answer
Resistance unit be arranged in parallel.Or the resistance unit and the 3rd between one-to-one 3rd connection end S1, the first connection end D1
Resistance unit between connection end S1, second connection end D2 be arranged in parallel；One-to-one 4th connection end S2, the first connection end
The resistance unit between resistance unit and the 4th connection end S2, second connection end D2 between D1 be arranged in parallel.
Specifically, it is be arranged in parallel with reference to figure 2, resistance unit R1a and resistance unit R2a, resistance unit R1b and resistance unit
R2b is be arranged in parallel, and resistance unit R3a and resistance unit R4a be arranged in parallel, and resistance unit R3b is parallel with resistance unit R4b to be set
Put；With reference to figure 3, resistance unit R1a and resistance unit R4a be arranged in parallel, and resistance unit R1b and resistance unit R4b be arranged in parallel,
Resistance unit R2a and resistance unit R3a be arranged in parallel, and resistance unit R2b and resistance unit R3b be arranged in parallel.
Fig. 4 and Fig. 5 is the structural representation of other two kinds of pressure sensing cells provided in an embodiment of the present invention, such as Fig. 4 and
Shown in Fig. 5, resistance unit is serpentine-like.Resistance unit between one-to-one first connection end D1, the 3rd connection end S1 and
The extension path of resistance unit between one connection end D1, the 4th connection end S2 is identical；One-to-one second connection end D2, the
The extension path phase of resistance unit and the resistance unit between second connection end D2, the 4th connection end S2 between three connection end S1
Together.Or the resistance unit between one-to-one 3rd connection end S1, the first connection end D1 and the 3rd connection end S1, second
The extension path of resistance unit between the D2 of connection end is identical；Between one-to-one 4th connection end S2, the first connection end D1
Resistance unit it is identical with the extension path of the resistance unit between the 4th connection end S2, second connection end D2.
Specifically, with reference to figure 4, resistance unit R1a is identical with resistance unit R2a extension path, resistance unit R1b and electricity
Hinder that unit R 2b extension path is identical, and resistance unit R3a is identical with resistance unit R4a extension path, resistance unit R3b and
Resistance unit R4b extension path is identical.With reference to figure 5, resistance unit R1a is identical with resistance unit R4a extension path, resistance
Unit R 1b is identical with resistance unit R4b extension path, and resistance unit R2a is identical with resistance unit R3a extension path, electricity
It is identical with resistance unit R3b extension path to hinder unit R 2b.
The embodiment of the present invention provides a kind of display panel, including the pressure sensor described in the various embodiments described above, pressure
Sensor includes at least one above-mentioned pressure sensing cells.Because display panel uses above-mentioned pressure sensor, therefore display surface
Plate equally has the beneficial effect of above-described embodiment pressure sensor.
Fig. 6 is a kind of cross-sectional view of display panel provided in an embodiment of the present invention, as shown in fig. 6, display surface
Plate also includes thin film transistor array layer 21, anode 221, light emitting functional layer 222 and the negative electrode 223 that lamination is set successively, thin
Film transistor array layer 21 includes multiple thin film transistor (TFT)s 211, and thin film transistor (TFT) 211 includes grid 213, active layer 214, source electrode
212 and drain electrode 215, resistance unit (not shown in Fig. 6) and anode 221, negative electrode 223, grid 213, source electrode 212, drain electrode 215 or
Active layer 214 is set with layer.Resistance unit is set with anode 221, negative electrode 223, grid 213, source electrode 212 or drain electrode 215 with layer
When, of the same race use can be used to be formed in same manufacturing process, now the material of resistance unit includes metal.Resistance unit with
When active layer 214 is set with layer, of the same race use can be used to be formed in same manufacturing process, now the material bag of resistance unit
Include monocrystalline silicon or polysilicon.The resistance list of pressure sensing cells is made using with original film layer identical material in display panel
Member, the manufacture craft of display panel can be simplified, save processing procedure.
Alternatively, display panel can include 2-20 pressure sensing cells, so as to detect whole display panel
The pressure value of any position, and pressure sensing cells is not taken excessive non-display area caused by redundancy and is caused to show
The cost increase of panel.
Fig. 7 and Fig. 8 provides the overlooking the structure diagram of other two kinds of display panels for the embodiment of the present invention, with reference to Fig. 7 and
Shown in Fig. 8, display panel is shaped as rectangle, and display panel includes 6 or 8 pressure sensing cells 20, and positioned at rectangular
The pressure sensing cells 20 of two long edge positions of shape are symmetrical.It is understood that the pressure-sensing list nearer apart from press points
The deformation quantity that member can sense is bigger, and the deformation quantity that the pressure sensing cells more remote apart from press points can sense is smaller, still
Set excessive pressure sensing cells to take excessive non-display area, and cause the cost increase of display panel, therefore aobvious
On the basis of showing panel including 2-20 pressure sensing cells, in order that pressure sensing cells can sufficiently sense display panel
Deformation, 6 or 8 pressure sensing cells can be uniformly distributed in the long side both sides of display panel.
Fig. 9 provides a kind of overlooking the structure diagram of display panel for the embodiment of the present invention, as shown in figure 9, display panel
Non-display area 12 including viewing area 11 and around viewing area 11, display panel are shaped as rectangle, pressure sensing cells position
In non-display area 12 and it is located at rectangular long edge position.Usual technical staff can be by the drive circuit and letter of pressure sensing cells
The structure settings such as number process circuit and driving IC, flexible PCB are at a short side of display panel, therefore enough
Space accommodates pressure sensing cells；If pressure sensing cells are arranged on relative with driving the structures such as IC, flexible PCB
At another short side, then need to set longer connecting line to connect at pressure sensing cells and its drive circuit and its signal
Circuit is managed, and connecting line needs the long side of the short brink and a display panel by two display panels, wiring is complicated, because
Pressure sensing cells can be arranged on the long side side of display panel by this, be connected up with realizing to simplify on the basis of narrow frame.
The pressure sensing cells in pressure sensor are typically formed into Wheatstone bridge, and the output signal of Wheatstone bridge
The size of the deformation quantity occurred when value is under pressure with display panel is relevant, but the deformation quantity of display panel is obviously in each position
The place of putting is different, exemplarily, with reference to figure 9, if (dashed circle in Fig. 9) applies certain pressure at the center of display panel
Power, then the deformation quantity size that display panel deforms upon is as shown in the curve in XY coordinate systems in Fig. 9, and wherein X-axis is along second party
To that is, along the long side direction of display panel, X-axis represents length, and in the first direction, Y-axis represents the deformation quantity of display panel to Y-axis.
Alternatively, it is first direction parallel to rectangular short side direction, parallel to rectangular long side side with reference to figure 9
To for second direction, in a second direction upper display panel be in turn divided into multiple strain regions (in Fig. 9 using 3 strain regions as
Example is explained), and any boundary line between the two in multiple strain regions extends in a first direction, multiple strains
Region includes at least three regions, at least one pressure sensing cells simultaneously in multiple strain regions at least both.This
In inventive embodiments, at least one pressure sensing cells simultaneously in multiple strain regions at least both, while positioned at more
The pressure sensing cells of individual strain region experience the deformation of the different piece of display panel simultaneously, due to display panel deformation quantity
Bigger place, the output signal value of pressure sensing cells is bigger, therefore is located at the pressure-sensing list of multiple strain regions simultaneously
Member more " golden mean of the Confucian school ", it is to be understood that while positioned at multiple strain regions pressure sensing cells it is more, display panel it is each
The output signal value difference of individual pressure sensing cells is smaller, and homogeneity is better.
Figure 10 provides the overlooking the structure diagram of another display panel for the embodiment of the present invention, and Figure 11 is pressure in Figure 10
The mplifying structure schematic diagram of sensing unit, with reference to shown in Figure 10 and Figure 11, display panel is shaped as rectangle, rectangular length
Edge lengths are L, are the first strain region Q1 with region of the distance of a rectangular short side less than or equal to L/8, with the short side
Distance be more than L/8, and the region less than or equal to 3L/8 is the second strain region Q2；It is more than 3L/8 with the distance of the short side, and
Region less than or equal to 5L/8 is the 3rd strain region Q3；It is more than 5L/8, and the area less than or equal to 7L/8 with the distance of the short side
Domain is the 4th strain region Q4；It is the 5th strain region Q5 with region of the distance of the short side more than 7L/8.
Alternatively, two parts, respectively Part I 201 are included with reference to figure 10 and Figure 11, each pressure sensing cells
With Part II 202, multiple resistance units and the 3rd connection end S3, second between the 3rd connection end S1, the first connection end D1
Multiple resistance units composition Part I 201 between the D2 of connection end, it is multiple between the 4th connection end S2, the first connection end D1
Multiple resistance units composition Part II 202 between resistance unit and the 4th connection end S2, second connection end D2.Specifically,
Resistance unit R1a, resistance unit R2a, resistance unit R1b and resistance unit R2b composition Part I 201；Resistance unit R3a,
Resistance unit R4a, resistance unit R3b and resistance unit R4b composition Part II 202.It is understood that in other embodiment party
Multiple resistance units between first connection end D1, the 3rd connection end S1 and the first connection end D1, the 4th can also be set in formula
Multiple resistance units composition Part I 201 between the S2 of connection end, it is multiple between second connection end D2, the 3rd connection end S1
Multiple resistance units composition Part II 202 between resistance unit and second connection end D2, the 4th connection end S2, that is, set electricity
Hinder unit R 1a, resistance unit R4a, resistance unit R1b and resistance unit R4b composition Part I 201；Resistance unit R2a, electricity
Hinder unit R 3a, resistance unit R2b and resistance unit R3b composition Part II 202.Display panel includes 6 pressure sensing cells
20, and the pressure sensing cells positioned at two long edge positions of rectangle are symmetrical, any pressure sensing cells 20 are simultaneously positioned at the
In one strain region Q1, the second strain region Q2, the 3rd strain region Q3, the 4th strain region Q4 and the 5th strain region Q5
Adjacent three, and simultaneously positioned at the first strain region Q1, the second strain region Q2, the 3rd strain region Q3, the 4th strain region
The Part I 201 of the pressure sensing cells 20 of adjacent three and Part II 202 be not positioned in Q4 and the 5th strain region Q5
Two adjacent strain regions.
Specifically, six pressure sensing cells 20, respectively first pressure sense are included with reference to figure 10 and Figure 11, display panel
Survey unit 1, second pressure sensing unit 2, the 3rd pressure sensing cells 3, the 4th pressure sensing cells 4, the 5th pressure-sensing list
The pressure sensing cells 6 of member 5 and the 6th.The Part I 201 of the pressure sensing cells 4 of first pressure sensing unit 1 and the 4th is located at
First strain region Q1, the Part II 202 of the pressure sensing cells 4 of first pressure sensing unit 1 and the 4th is positioned at the 3rd strain
Region Q3, the Part I 201 of the pressure sensing cells 5 of second pressure sensing unit 2 and the 5th are located at the second strain region Q2, the
The Part II 202 of two pressure sensing cells 2 and the 5th pressure sensing cells 5 is located at the 4th strain region Q4, the 3rd feeling of stress
The Part I 201 for surveying the pressure sensing cells 6 of unit 3 and the 6th is located at the 3rd strain region Q3, the He of the 3rd pressure sensing cells 3
The Part II 202 of 6th pressure sensing cells 6 is located at the 5th strain region Q5.Exemplarily, if at the center of display panel
Place applies certain pressure, then the deformation quantity that display panel deforms upon in the 3rd strain region Q3 is maximum (strong region), and second
The deformation quantity that display panel deforms upon in strain region Q2 and the 4th strain region Q4 takes second place in (middle region), the first strain region
Display panel deforms upon in Q1 and the 5th strain region Q5 deformation quantity is minimum (weak-strong test), then a pressure sensing cells are simultaneously
Positioned at strong region and weak-strong test, or positioned at middle region, shape of all pressure sensing cells by display panel on the whole
It is close that variable, which influences, therefore the output signal value comparison in difference of each pressure sensing cells of display panel is small, homogeneity
Well.It should be noted that strong region, middle region and weak-strong test are only when applying certain pressure at the center of display panel
A kind of call directly perceived for the deformation quantity that display panel is subject to, in fact, pressed in display panel at other positions during application pressing force
Strong region has been reformed at pressure, weak-strong test, and first of pressure sensing cells have been reformed at distance pressing highest distance position
Divide the size for the signal value output that can be exchanged with the position of Part II without influenceing pressure sensing cells.
It should be noted that the pressure sensing cells in above-mentioned display panel provide so that resistance unit is serpentine-like, it is simultaneously
Non- limitation of the present invention, the pressure sensing cells in above-mentioned display panel can also be block resistance.
In addition, in the application the shape of the display panel of each embodiment be only with rectangle as an example, without should
It is considered as the limitation to this case.In other implementations of the application, display panel can also be ellipse, circular, polygon, run
Road shape etc., all feasible deformation programs of thought are protected without departing from the claimed core of the application the various embodiments described above
All within the application protection domain.
Figure 12 provides the overlooking the structure diagram of another display panel for the embodiment of the present invention, as shown in figure 12, display
Panel includes viewing area 11 and the non-display area 12 around viewing area 11, and display panel also includes touch controllable function layer 30, touch-control work(
Ergosphere 30 is located at viewing area 11, for touch location detection.Touch controllable function layer 30 can specifically include it is multiple it is separate from
Appearance formula touch control electrode block, each self-tolerant touch control electrode block form electric capacity with such as 1 potential energy point the earth respectively, when finger touches
Arrive or during close to display panel, the capacitance at touch location can increase, and then when carrying out touch detection, Ke Yitong
The change for detecting corresponding capacitance is crossed, to determine the position of touch point.Or touch control electrode layer 30 includes touch-control driving electrodes
With touch-control sensing electrode, mutual capacitance (coupling electricity can be formed in the place that touch-control sensing electrode and touch-control driving electrodes intersect
Hold), when human contact is to display panel, due to human body grounding, will be formed between finger and capacitance plate one with it is above-mentioned mutual
The electric capacity of electric capacity series connection, and then the electric capacity detected by touch-control sensing electrode can be caused to reduce and corresponding touch-control sensing can be produced
Signal, thus it is assured that position occurs for specific touch-control by corresponding conversion again.
Figure 13 is a kind of structural representation of display device provided in an embodiment of the present invention, as shown in figure 13, the present embodiment
The display device of offer includes above-mentioned any display panel.Because the display device uses above-mentioned display panel, thus it is aobvious
Showing device equally has the beneficial effect of above-described embodiment display panel.It is it should be noted that provided in an embodiment of the present invention aobvious
Showing device can also include other circuits and device for being used to support display device normal work.Above-mentioned display device can be
One kind in mobile phone, tablet personal computer, Electronic Paper, digital photo frame.
Pay attention to, above are only presently preferred embodiments of the present invention and institute's application technology principle.It will be appreciated by those skilled in the art that
The invention is not restricted to specific embodiment described here, can carry out for a person skilled in the art various obvious changes,
Readjust, be combined with each other and substitute without departing from protection scope of the present invention.Therefore, although by above example to this
Invention is described in further detail, but the present invention is not limited only to above example, is not departing from present inventive concept
In the case of, other more equivalent embodiments can also be included, and the scope of the present invention is determined by scope of the appended claims.
Claims (13)
- A kind of 1. pressure sensor, it is characterised in that including：At least one pressure sensing cells, the pressure sensing cells include the first connection end, second connection end, the 3rd connection end With the 4th connection end, first connection end and the second connection end electrically connect with bias voltage circuit respectively, and the described 3rd Connection end and the 4th connection end electrically connect with voltage detecting circuit respectively, first connection end, the second connection end, 3rd connection end and the 4th connection end form Wheatstone bridge；The pressure sensing cells include four resistance, and each resistance is electrically connected in first connection end, described In second connection end, the 3rd connection end and the 4th connection end between the two, and each resistance is including multiple The resistance unit of series connection；Multiple resistance units between first connection end, the 3rd connection end, with first connection end, described Multiple resistance units between 4th connection end correspond, and one-to-one first connection end, the described 3rd connect The resistance unit connect between end adjacent with the resistance unit between first connection end, the 4th connection end is set Put and distance is less than preset value；Multiple resistance units between the second connection end, the 3rd connection end, it is and described Multiple resistance units between second connection end, the 4th connection end correspond, and one-to-one described second connects Meet the institute between the resistance unit and the second connection end, the 4th connection end between end, the 3rd connection end State resistance unit be disposed adjacent and distance be less than preset value；OrMultiple resistance units between 3rd connection end, first connection end, with the 3rd connection end, described Multiple resistance units between second connection end correspond, and one-to-one 3rd connection end, described first connect The resistance unit connect between end adjacent with the resistance unit between the 3rd connection end, the second connection end is set Put and distance is less than preset value；Multiple resistance units between 4th connection end, first connection end, it is and described Multiple resistance units between 4th connection end, the second connection end correspond, and the one-to-one described 4th connects Meet the institute between the resistance unit between end, first connection end and the 4th connection end, the second connection end State resistance unit be disposed adjacent and distance be less than preset value.
- 2. pressure sensor according to claim 1, it is characterised in that the resistance unit is block resistance；The resistance unit between first connection end, the 3rd connection end is connected with described first correspondingly The resistance unit between end, the 4th connection end be arranged in parallel；The one-to-one second connection end, the described 3rd The resistance unit between connection end is parallel with the resistance unit between the second connection end, the 4th connection end Set；OrThe resistance unit between the 3rd connection end, first connection end is connected with the described 3rd correspondingly The resistance unit between end, the second connection end be arranged in parallel；One-to-one 4th connection end, described first The resistance unit between connection end is parallel with the resistance unit between the 4th connection end, the second connection end Set.
- 3. pressure sensor according to claim 1, it is characterised in that the resistance unit is serpentine-like；The resistance unit between first connection end, the 3rd connection end is connected with described first correspondingly The extension path of the resistance unit between end, the 4th connection end is identical；The one-to-one second connection end, institute State the resistance list between the resistance unit between the 3rd connection end and the second connection end, the 4th connection end The extension path of member is identical；OrThe resistance unit between the 3rd connection end, first connection end is connected with described first correspondingly The extension path of the resistance unit between end, the 4th connection end is identical；The one-to-one second connection end, institute State the resistance list between the resistance unit between the 3rd connection end and the second connection end, the 4th connection end The extension path of member is identical.
- 4. a kind of display panel, it is characterised in that including the pressure sensor as described in claim any one of 1-3.
- 5. display panel according to claim 4, it is characterised in that the display panel also includes what lamination successively was set Thin film transistor array layer, anode, light emitting functional layer and negative electrode, the thin film transistor array layer include multiple film crystals Pipe, the thin film transistor (TFT) include grid, active layer, source electrode and drain electrode；The resistance unit and the anode, the negative electrode, The grid, the source electrode, the drain electrode or the active layer are set with layer.
- 6. display panel according to claim 4, it is characterised in that the display panel includes viewing area and around described The non-display area of viewing area, the display panel are shaped as rectangle, and the pressure sensing cells are located at the non-display area And it is located at the rectangular long edge position.
- 7. display panel according to claim 4, it is characterised in that including the 2-20 pressure sensing cells.
- 8. display panel according to claim 6, it is characterised in that the display panel includes 6 or 8 pressure Sensing unit, and the pressure sensing cells positioned at two long edge positions of rectangle are symmetrical.
- 9. display panel according to claim 6, it is characterised in that parallel to the rectangular short side direction be first Direction, it is second direction parallel to the rectangular long side direction, the display panel is drawn successively along in the second direction It is divided into multiple strain regions, and any boundary line between the two in the multiple strain region prolongs along the first direction Stretch, the multiple strain region includes at least three regions；At least one pressure sensing cells simultaneously in the multiple strain region at least both.
- 10. display panel according to claim 9, it is characterised in that the rectangular long edge lengths are L；It is the first strain region with region of the distance of a rectangular short side less than or equal to L/8, with the short side Distance is more than L/8, and the region less than or equal to 3L/8 is the second strain region；It is more than 3L/8 with the distance of the short side, and it is small In the region equal to 5L/8 be the 3rd strain region；It is more than 5L/8, and the region less than or equal to 7L/8 with the distance of the short side For the 4th strain region；It is the 5th strain region with region of the distance of the short side more than 7L/8.
- 11. display panel according to claim 10, it is characterised in that each pressure sensing cells include two portions Divide, respectively Part I and Part II；Multiple resistance lists between first connection end, the 3rd connection end First multiple resistance units composition Part I between first connection end, the 4th connection end, described second Multiple resistance units between connection end, the 3rd connection end and the second connection end, the 4th connection end it Between multiple resistance units form the Part II；It is or multiple between the 3rd connection end, first connection end Described first of multiple resistance units composition between the resistance unit and the 3rd connection end, the second connection end Point, multiple resistance units between the 4th connection end, first connection end and the 4th connection end, described the Multiple resistance units between two connection ends form the Part II；The display panel includes 6 pressure sensing cells, and positioned at the pressure-sensing of two long edge positions of rectangle Unit is symmetrical；Any pressure sensing cells are answered positioned at first strain region, second strain region, the described 3rd simultaneously The adjacent three become in region, the 4th strain region and the 5th strain region；And simultaneously positioned at the described first strain Phase in region, second strain region, the 3rd strain region, the 4th strain region and the 5th strain region The Part I and the Part II of the pressure sensing cells of adjacent three are located at non-conterminous two strain regions.
- 12. according to the display panel described in claim any one of 4-11, it is characterised in that the display panel includes viewing area With the non-display area around the viewing area；The display panel also includes touch controllable function layer, and the touch controllable function layer is located at the viewing area, is examined for touch location Survey.
- 13. a kind of display device, it is characterised in that including the display panel described in claim any one of 4-12.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710769304.8A CN107340931B (en) | 2017-08-31 | 2017-08-31 | Display panel and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710769304.8A CN107340931B (en) | 2017-08-31 | 2017-08-31 | Display panel and display device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107340931A true CN107340931A (en) | 2017-11-10 |
| CN107340931B CN107340931B (en) | 2020-10-09 |
Family
ID=60214444
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710769304.8A Active CN107340931B (en) | 2017-08-31 | 2017-08-31 | Display panel and display device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107340931B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111147062A (en) * | 2020-01-19 | 2020-05-12 | 芯海科技（深圳）股份有限公司 | Pressure sensor module, pressure detection device and terminal equipment |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104995587A (en) * | 2014-08-14 | 2015-10-21 | 深圳纽迪瑞科技开发有限公司 | Pressure measurement structure and touch control device |
| CN105607773A (en) * | 2015-12-24 | 2016-05-25 | 上海天马微电子有限公司 | Touch screen |
| CN105829849A (en) * | 2013-12-11 | 2016-08-03 | 迈来芯科技有限公司 | Semiconductor pressure sensor |
| CN105975137A (en) * | 2016-07-07 | 2016-09-28 | 上海天马微电子有限公司 | Touch display panel and touch display device |
| CN106293419A (en) * | 2015-06-10 | 2017-01-04 | 宸鸿科技(厦门)有限公司 | Pressure sensitive patterned layer and pressure-sensing input equipment thereof |
| CN106951127A (en) * | 2017-05-04 | 2017-07-14 | 宸鸿科技(厦门)有限公司 | Pressure-sensing module, contactor control device and OLED display |
| CN107102466A (en) * | 2017-06-30 | 2017-08-29 | 上海天马微电子有限公司 | A kind of display panel and touch control display apparatus |
-
2017
- 2017-08-31 CN CN201710769304.8A patent/CN107340931B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105829849A (en) * | 2013-12-11 | 2016-08-03 | 迈来芯科技有限公司 | Semiconductor pressure sensor |
| CN104995587A (en) * | 2014-08-14 | 2015-10-21 | 深圳纽迪瑞科技开发有限公司 | Pressure measurement structure and touch control device |
| CN106293419A (en) * | 2015-06-10 | 2017-01-04 | 宸鸿科技(厦门)有限公司 | Pressure sensitive patterned layer and pressure-sensing input equipment thereof |
| CN105607773A (en) * | 2015-12-24 | 2016-05-25 | 上海天马微电子有限公司 | Touch screen |
| CN105975137A (en) * | 2016-07-07 | 2016-09-28 | 上海天马微电子有限公司 | Touch display panel and touch display device |
| CN106951127A (en) * | 2017-05-04 | 2017-07-14 | 宸鸿科技(厦门)有限公司 | Pressure-sensing module, contactor control device and OLED display |
| CN107102466A (en) * | 2017-06-30 | 2017-08-29 | 上海天马微电子有限公司 | A kind of display panel and touch control display apparatus |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111147062A (en) * | 2020-01-19 | 2020-05-12 | 芯海科技（深圳）股份有限公司 | Pressure sensor module, pressure detection device and terminal equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107340931B (en) | 2020-10-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105955535B (en) | A kind of display panel | |
| CN205091721U (en) | Electronic equipment and force transducer who is used for electronic equipment | |
| JP5060845B2 (en) | Screen input type image display device | |
| CN105975137B (en) | Touch display panel and touch display device | |
| CN105224129B (en) | A kind of pressure-sensing input unit | |
| TWI387908B (en) | Device and method for detecting position of object and image display system using the same device | |
| CN106648236B (en) | Touch display panel and touch display device | |
| CN102138120B (en) | Sensor device and information processing device | |
| US10534463B2 (en) | Touch input device | |
| CN105677112B (en) | Touch-control display panel and touch control display apparatus | |
| US20060209039A1 (en) | Touch sensitive display for a portable device | |
| CN106293192A (en) | Pressure-sensing input equipment | |
| CN107621715B (en) | Display panel and display device | |
| US20200387279A1 (en) | Touch input method and device for providing user interface | |
| CN108319394A (en) | Touch panel and its driving method, touch device | |
| CN107621908A (en) | A kind of display panel, display device and its pressure touch method | |
| CN107340914A (en) | A kind of display base plate, display panel and display device | |
| CN106354326A (en) | Display panel and display device | |
| CN101714046A (en) | Device and method for detecting object position and image display system using device | |
| CN107340931A (en) | A kind of pressure sensor, display panel and display device | |
| CN107678217A (en) | A kind of liquid crystal display panel and liquid crystal display device | |
| CN107643621B (en) | Display panel and display device | |
| CN107562283B (en) | Touch display panel, display device and driving method thereof | |
| CN107315503B (en) | Display device | |
| CN107491224B (en) | Display panel, display device, and method for driving display panel |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |