CN107422510A - Display panel, display device and touch detection method of display panel - Google Patents
Display panel, display device and touch detection method of display panel Download PDFInfo
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- CN107422510A CN107422510A CN201710514284.XA CN201710514284A CN107422510A CN 107422510 A CN107422510 A CN 107422510A CN 201710514284 A CN201710514284 A CN 201710514284A CN 107422510 A CN107422510 A CN 107422510A
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- 238000001514 detection method Methods 0.000 title abstract description 26
- 239000000758 substrate Substances 0.000 claims abstract description 46
- 230000035945 sensitivity Effects 0.000 claims description 106
- 239000012528 membrane Substances 0.000 claims description 37
- 238000000034 method Methods 0.000 claims description 17
- 230000008859 change Effects 0.000 claims description 13
- 239000011159 matrix material Substances 0.000 claims description 11
- 239000004020 conductor Substances 0.000 claims description 4
- 230000005611 electricity Effects 0.000 claims description 4
- 239000007769 metal material Substances 0.000 claims description 4
- WYTGDNHDOZPMIW-RCBQFDQVSA-N alstonine Natural products C1=CC2=C3C=CC=CC3=NC2=C2N1C[C@H]1[C@H](C)OC=C(C(=O)OC)[C@H]1C2 WYTGDNHDOZPMIW-RCBQFDQVSA-N 0.000 claims description 3
- 239000004744 fabric Substances 0.000 claims description 3
- 238000000059 patterning Methods 0.000 claims description 2
- 230000008569 process Effects 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 19
- 230000004048 modification Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 238000002360 preparation method Methods 0.000 description 4
- 239000011888 foil Substances 0.000 description 3
- 238000003825 pressing Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 239000010408 film Substances 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 239000004973 liquid crystal related substance Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000001413 cellular effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- GRPQBOKWXNIQMF-UHFFFAOYSA-N indium(3+) oxygen(2-) tin(4+) Chemical compound [Sn+4].[O-2].[In+3] GRPQBOKWXNIQMF-UHFFFAOYSA-N 0.000 description 1
- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 230000011664 signaling Effects 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/13338—Input devices, e.g. touch panels
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133509—Filters, e.g. light shielding masks
- G02F1/133512—Light shielding layers, e.g. black matrix
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1343—Electrodes
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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
The application discloses a display panel, a display device and a touch detection method of the display panel. The display panel comprises an array substrate and a color film substrate which are arranged oppositely, a pressure sensing bridge for sensing the touch pressure is arranged in a display area on one side, close to the array substrate, of the color film substrate, and the pressure sensing bridge comprises a first input end and a second input end for receiving input signals, and a first output end and a second output end for detecting voltage changes. According to the scheme of the application, the pressure sensing bridge is arranged in the display area on the side, close to the array substrate, of the color film substrate, so that high-sensitivity pressure detection is realized under the condition that a frame area is not increased.
Description
Technical field
Present application relates generally to display technology field, more particularly to a kind of display panel, display device and display panel
Touch control detecting method.
Background technology
Touch control display apparatus is widely used to mobile phone, tablet personal computer, computer display, digital camera etc.
In electronic equipment.Touch control display apparatus can detect finger in the display screen plane of touch control display apparatus by touch control electrode
Coordinate position, and shown accordingly according to the coordinate position.
So, user only needs that with the mark on finger touching display screen operation to electronic equipment can be completed, elimination
Dependence of the user to other input equipments (for example, keyboard, mouse etc.) so that man-machine interaction is more convenient.
However, the diversity of development and the human-computer interaction interface interactive operation of Display Technique proposes to touch control display apparatus
Higher requirement.For example, in detection finger outside the coordinate position of display screen plane, it is also necessary to press display screen to finger
Pressure size detected, so as to be shown accordingly according to the difference of pressure size.
At present, touch control display apparatus realizes that the mode of pressure touch detection mainly has two kinds：Resistive pressure touch-control and electricity
Appearance formula pressure touch, wherein, resistive pressure touch-control receives much concern because of the advantage of its high sensitivity and low cost.
Generally by foil gauge, (pressure sensor, its resistance is with self-deformation for the resistance type touch display device of prior art
The change of amount and change) be arranged under the backlight layer of display device or surrounding frame in.By foil gauge be arranged on backlight layer it
Under, the sensitivity of pressure detecting can be reduced；And foil gauge is arranged on frame around, then it can increase the rim area of display device
Domain, it is unfavorable for the development trend of touch control display apparatus narrow frame.
The content of the invention
In view of drawbacks described above of the prior art or deficiency, it is expected to provide a kind of display panel, display device and display surface
The touch control detecting method of plate, to solve technical problem present in prior art.
According to the one side of the application, there is provided a kind of display panel, including the array base palte being oppositely arranged and color film
Substrate, the pressure sensitivity for sensing touch-control pressure size is provided with the viewing area of the side of array base palte in color membrane substrates
Electric bridge, pressure sensitivity electric bridge is including the first input end for being used to receive input signal and the second input and for detecting voltage change
The first output end and the second output end.
According to the another aspect of the application, a kind of display device, including display panel as above are additionally provided.
According to the another aspect of the application, a kind of touch control detecting method of display panel is additionally provided, display panel includes
The array base palte and color membrane substrates being oppositely arranged, color membrane substrates be provided with the viewing area of the side of array base palte to
Few three pressure sensitivity electric bridges not on the same line, pressure sensitivity electric bridge include being used for the first input end and second for receiving input signal
Input and the first output end and the second output end for detecting voltage change；Touch control detecting method includes：To each first
Input applies first voltage signal, applies second voltage signal to each second input；Detect each pressure sensitivity electric bridge first is defeated
The output voltage gone out between end and the second output end is poor, and the touch pressure of each pressure sensitivity electric bridge sensing is calculated according to output voltage difference
Value；Positional information and touch pressure value based on each pressure sensitivity electric bridge, determined to touch position according to default pressure position corresponding relation
Put.
The touch control detecting method of display panel, display device and display panel that the application provides, by color membrane substrates
Pressure sensitivity electric bridge is set in the viewing area of the side of array base palte, it is high so as to be realized in the case where not increasing frame region
The pressure detecting of sensitivity.
Brief description of the drawings
By reading the detailed description made to non-limiting example made with reference to the following drawings, the application's is other
Feature, objects and advantages will become more apparent upon：
Figure 1A shows the schematic diagram of the display panel of the application one embodiment；
Figure 1B shows the schematic diagram of Figure 1A pressure sensitivity electric bridge；
Fig. 2 shows the schematic circuit of the pressure sensitivity electric bridge shown in Figure 1B；
Fig. 3 shows the schematic diagram of an optional implementation of pressure sensitivity electric bridge shown in Figure 1B；
Fig. 4 A show the schematic diagram of the display panel of another embodiment of the application；
Fig. 4 B are Fig. 4 A region SS enlarged diagram；
Fig. 4 C are the sectional view along the line AB in Fig. 4 A；
Fig. 5 shows the schematic diagram of the display panel of the another embodiment of the application；
Fig. 6 A show the schematic diagram of the display panel of the application another embodiment；
Fig. 6 B are the sectional view along the line CD in Fig. 6 A；
Fig. 7 A show the schematic diagram of the display panel of the another embodiment of the application；
Fig. 7 B are the sectional view along the line EF in Fig. 7 A；
Fig. 8 shows the schematic diagram of the display panel of the application another embodiment；
Fig. 9 shows the schematic diagram of the display panel of the another embodiment of the application；
Figure 10 shows the indicative flowchart of one embodiment of the touch control detecting method of the display panel of the application；
Figure 11 shows the schematic diagram of one embodiment of the display device of the application.
Embodiment
The application 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 related invention, rather than the restriction to the invention.It also should be noted that in order to
It is easy to describe, the part related to invention is illustrate only in accompanying drawing.
It should be noted that in the case where not conflicting, the feature in embodiment and embodiment in the application can phase
Mutually combination.Describe the application in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
Figure 1A shows the schematic diagram of the display panel of the application one embodiment, and Figure 1B shows Figure 1A pressure sensitivity electric bridge
Schematic diagram.
As shown in Figure 1A and 1B, display panel may include the array base palte 11 being oppositely arranged and color membrane substrates 12, in color film
Substrate 12 may be provided with the pressure sensitivity electricity for sensing touch-control pressure size in the viewing area DA of the side of array base palte 11
Bridge 13, pressure sensitivity electric bridge 13 may include first input end IN1 for receiving input signal and the second input IN2 and for examining
Survey the first output end Fout1 and the second output end Fout2 of voltage change.
It is highly sensitive so as to realize by the way that pressure sensitivity electric bridge is arranged in the viewing area of color membrane substrates in the present embodiment
The pressure detecting of degree, and frame region is not take up, be advantageous to the narrow frame of display panel.
It will be understood by those skilled in the art that the display panel of the present embodiment can also include some other known knots
Structure, for example, when display panel is liquid crystal display panel, the thin film transistor (TFT) that can also include being arranged on array base palte 11,
Liquid crystal layer between array base palte 11 and color membrane substrates 12 etc.., will be no longer to these for the emphasis of not fuzzy the application
Known structure is described in detail.
Alternatively, pressure sensitivity electric bridge 13 may include first resistor R1, second resistance R2,3rd resistor R3 and the 4th resistance R4.
As shown in Fig. 2 in pressure sensitivity electric bridge 13, first input end IN1 and first resistor R1 first end and 3rd resistor
R3 first end electrical connection, the second input IN2 electrically connect with second resistance R2 first end and the 4th resistance R4 first end,
First output end Fout1 electrically connects with first resistor R1 the second end and second resistance R2 the second end, the second output end Fout2
Electrically connected with 3rd resistor R3 the second end and the 4th resistance R4 the second end.
The operation principle of pressure sensitivity electric bridge 13 of the explanation with foregoing circuit structure below.
After applying voltage signal to first input end IN1 and the second input IN2, each branch road in pressure sensitivity electric bridge 13 has
Electric current meets R1/R2=R3/R4 by, first resistor R1, second resistance R2,3rd resistor R3 and the 4th resistance R4 resistance
When, the current potential between the first output end Fout1 and the second output end Fout2 is equal, and now pressure sensitivity electric bridge 13 is in poised state.
When applying pressure to display panel, display panel can deform upon, and set first resistor on a display panel
R1, second resistance R2,3rd resistor R3 and the 4th resistance R4 are also deformed upon, correspondingly first resistor R1, second resistance R2,
Three resistance R3 and the 4th resistance R4 resistance changes with the change of deformation quantity, due to first resistor R1 knots modification and second
The ratio of the ratio of resistance R2 knots modification and 3rd resistor R3 knots modification and the 4th resistance R4 knots modification is different, causes to press
The disequilibrium of inductance bridge 13, i.e. R1/R2 ≠ R3/R4, now, exist between the first output end Fout1 and the second output end Fout2
Potential difference.
Because the potential difference between the pressure value and the first output end Fout1 and the second output end Fout2 of application has one
Fixed corresponding relation, therefore, during pressure detecting, by obtaining the defeated of the first output end Fout1 and the second output end Fout2
Go out signal and can determine that pressure applied value.
In addition, to the same point of display panel apply pressure when, deformation quantity caused in different directions has certain
Difference, i.e. pressing position nearby has different deformation quantities in different directions.If first resistor R1, second resistance R2, the 3rd
Resistance R3 and the 4th resistance R4 pressure deformation sensitive direction are consistent, then can reduce the sensitivity of pressure detecting, therefore, the first electricity
Hinder in R1, second resistance R2,3rd resistor R3 and the 4th resistance R4 and at least two resistance be present (for example, first resistor R1 and the
Two resistance R2) pressure deformation sensitive direction it is different.
Alternatively, first resistor R1 and the 4th resistance R4 can have the sensitive snakelike cloth of the pressure deformation to first direction D1
Line, second resistance R2 and 3rd resistor R3 can have the sensitive serpentine wire of the pressure deformation to second direction D2, wherein, first
Direction D1 intersects with second direction D2, as shown in Figure 3.
Specifically, first resistor R1 from first end (being connected with first input end IN1) to the second end (with the first output end
Fout1 connections) development length component in the first direction dl be more than component in a second direction d 2, second resistance R2 from
First end (being connected with the second input IN2) to the second end (being connected with the first output end Fout1) development length second
Component on the D2 of direction is more than the component on first direction D1, and 3rd resistor R3 (is connected) from first end with first input end IN1
Development length component in a second direction d 2 to the second end (being connected with the second output end Fout2) is more than D1 in a first direction
On component, the 4th resistance R4 from first end (being connected with the second input IN2) to the second end (with the second output end Fout2 connect
Connect) development length component in the first direction dl be more than component in a second direction d 2.
The schematic diagram of the display panel of another embodiment of the application is shown with continued reference to Fig. 4 A, Fig. 4 B and Fig. 4 C, Fig. 4 A,
Fig. 4 B are Fig. 4 A region SS enlarged diagram, and Fig. 4 C are the sectional view along Fig. 4 B line AB.
Similar with the embodiment shown in Figure 1A, in the present embodiment, display panel equally may include the array base being oppositely arranged
Plate (not shown) and color membrane substrates 42, pressure sensitivity electric bridge 43 is equally may be provided with color membrane substrates 42.
Unlike the embodiment shown in Figure 1A, in the present embodiment, further restriction has been carried out to pressure sensitivity electric bridge 43.
As shown in figs. 4 b and 4 c, array base palte may include the pel array being made up of multiple sub-pixel P, color membrane substrates 42
Also include black matrix" 44, in region of orthographic projection of the black matrix" 44 to array base palte between each sub-pixel P.Wherein,
Pressure sensitivity electric bridge 43 is located at black matrix" 44 close to the side of array base palte, and orthographic projection of the pressure sensitivity electric bridge 43 to black matrix" 44
Within the coverage of black matrix" 44.
In this case, pressure sensitivity electric bridge 43 is covered by black matrix" 44, and pressure sensitivity electric bridge 43 can be prevented to be viewed by a user,
Especially when pressure sensitivity electric bridge 43 includes light-proof material or reflectorized material, the visual experience of user can be improved, improve display surface
The display quality of plate.
In the present embodiment, by the way that pressure sensitivity electric bridge is arranged in the viewing area of color membrane substrates, and cover black matrix"
Pressure sensitivity electric bridge, so as to while highly sensitive pressure detecting and narrow frame is realized, improve the display matter of display panel
Amount.
Alternatively, pressure sensitivity electric bridge 43 is formed by conductive metal material.
Compared with other conductive materials, metal material has more preferable ductility and toughness, so as to be not easy by external force institute
Damage, when pressure sensitivity electric bridge 43 is formed by conductive metal material, pressure sensitivity electric bridge 43 has higher reliability.
Alternatively, pressure sensitivity electric bridge 43 is formed by transparent conductive material, for example, ITO (Indium TinOxide, indium oxide
Tin).
Transparent conductive material could generally have relatively high resistivity, when being applied to pressure sensitivity electric bridge 43, pressure sensitivity electric bridge
First resistor, second resistance, 3rd resistor and the 4th resistance in 43 can have relatively high resistance.Apply when to display panel
During pressure, with the change of pressure deformation amount, the change in resistance of each resistance also becomes apparent from, so that the sensitivity of pressure detecting is more
It is high.
With continued reference to Fig. 5, the schematic diagram of the display panel of the another embodiment of the application is shown.
Similar with the embodiment shown in Figure 1A, in the present embodiment, display panel equally may include the array base being oppositely arranged
Plate 51 and color membrane substrates 52, pressure sensitivity electric bridge 53 is equally may be provided with color membrane substrates 52.
Unlike the embodiment shown in Figure 1A, in the present embodiment, further restriction has been carried out to pressure sensitivity electric bridge 53.
As shown in figure 5, being provided with pixel electrode 56 on array base palte 51, public electrode 55 is provided with color membrane substrates 52,
The reusable of pressure sensitivity electric bridge 53 is public electrode 55.
During the display of display panel, public voltage signal can be applied to public electrode 55 (and pressure sensitivity electric bridge 53), used
In display image；And during pressure detecting, pressure can be applied to pressure sensitivity electric bridge 53 by first input end and the second input
Detection signal, for detecting pressure size.
So, it may not be necessary to be separately provided common electrode layer, so as to simplify the structure of display panel, be advantageous to reduce display
The thickness of panel, and the preparation technology of display panel can be simplified, reduce production cost.
In the present embodiment, by the way that the pressure sensitivity electric bridge of color membrane substrates is multiplexed with into public electrode, high sensitivity is not only realized
Pressure detecting, also simplify the structure of display panel, reduce cost.
The schematic diagram of the display panel of the application another embodiment, Fig. 6 B are shown with continued reference to Fig. 6 A and Fig. 6 B, Fig. 6 A
For along the sectional view of the line CD in Fig. 6 A.
Similar with the embodiment shown in Figure 1A, in the present embodiment, display panel equally may include the array base being oppositely arranged
Plate 61 and color membrane substrates 62, pressure sensitivity electric bridge 63 is equally may be provided with color membrane substrates 62.
Unlike the embodiment shown in Figure 1A, in the present embodiment, the touch control detection mode of display panel is carried out
It is further to limit.
As shown in Figure 6 A and 6 B, array base palte may also include multiple first electrodes 67 of array arrangement, tactile for detecting
Control position.
Because pressure detecting uses the pressure sensitivity electric bridge 63 of resistance-type, and touch control detection (that is, position is detected) is arranged using array
The first electrode 67 of cloth, therefore, two kinds of detections can be carried out simultaneously, so as to improve the efficiency of pressure detecting and touch control detection.
Alternatively, array base palte also includes public electrode, and first electrode 67 is multiplexed with public electrode.
Each first electrode 67 can be electrically connected to each other by multiple transistor switch (not shown), so, during display, respectively
Transistor switch turns on, and each first electrode 67 is electrically connected to each other as public electrode, receives public voltage signal, realizes that image shows
Show；And during touch control detection, each transistor switch cut-off, apply touch control detection signal to each first electrode 67 respectively and receive
The sensing signal of first electrode 67, complete touch control detection.
The schematic diagram of the display panel of the another embodiment of the application, Fig. 7 B are shown with continued reference to Fig. 7 A and Fig. 7 B, Fig. 7 A
For along the sectional view of the line EF in Fig. 7 A.
Similar with the embodiment shown in Figure 1A, in the present embodiment, display panel equally may include the array base being oppositely arranged
Plate 71 and color membrane substrates 72, pressure sensitivity electric bridge 73 is equally may be provided with color membrane substrates 72.
Unlike the embodiment shown in Figure 1A, in the present embodiment, the touch control detection mode of display panel is carried out
It is further to limit.
As shown in figures 7 a and 7b, array base palte 71 may also include the multiple second electrode TE to be arranged along third direction D3,
Second electrode TE extends along fourth direction D4；Color membrane substrates 72 may also include multiple 3rd electrodes arranged along fourth direction D4
RE, the 3rd electrode RE extend along third direction D3.Here, third direction D3 and fourth direction D4 intersect.
Because pressure detecting uses the pressure sensitivity electric bridge 73 of resistance-type, and touch control detection uses second electrode TE and the 3rd electrode
RE, therefore, two kinds of detections can be carried out simultaneously, so as to improve the efficiency of pressure detecting and touch control detection.
Alternatively, the 3rd electrode RE can be located at same layer with pressure sensitivity electric bridge 73, and be made in the patterning process with along with
Form.
In other words, the 3rd electrode RE may also be arranged on color membrane substrates 72 close to the side of array base palte 71, so, can letter
Change the structure of display panel (mutual capacitance type display panel), advantageously reduce the thickness of display panel, and display surface can be simplified
The preparation technology of plate, and then reduce the production cost of display panel.
The display panel of the various embodiments described above may also include integrated circuit, for carrying out pressure detecting by pressure sensitivity electric bridge,
And/or carry out touch control detection by touch detection electrodes.
As shown in figure 8, display panel may also include integrated circuit 89, the first input end IN1 of pressure sensitivity electric bridge 83 passes through
One signal lead Lin1Integrated circuit 89 is connected to, the second input IN2 of pressure sensitivity electric bridge 83 passes through secondary signal cabling Lin2Even
It is connected to integrated circuit 89.Wherein, the first signal lead Lin1With secondary signal cabling Lin2Resistance it is equal.
Alternatively, the first signal lead Lin1With secondary signal cabling Lin2Resistance much smaller than first resistor to the 4th resistance
In any one resistance resistance.For example, the first signal lead Lin1With secondary signal cabling Lin2Resistance be less than first resistor
10% of any one resistance into the 4th resistance.
So, it may be such that the partial pressure between pressure sensitivity electric bridge first input end IN1 and the second input IN2 much larger than the first letter
Number cabling Lin1With secondary signal cabling Lin2Partial pressure so that the sensitivity of pressure detecting is higher.
Alternatively, the first output end Fout1 of pressure sensitivity electric bridge 83 passes through the 3rd signal lead Lout1It is connected to integrated circuit
89, the second output end Fout2 of pressure sensitivity electric bridge 83 passes through the 4th signal lead Lout2It is connected to integrated circuit 89.Wherein, the 3rd
Signal lead Lout1With the 4th signal lead Lout2Resistance it is equal.
With continued reference to Fig. 9, the schematic diagram of the display panel of the another embodiment of the application is shown.
Similar with the embodiment shown in Figure 1A, in the present embodiment, display panel equally may include the array base being oppositely arranged
Plate (not shown) and color membrane substrates 92, pressure sensitivity electric bridge is equally may be provided with color membrane substrates 92.
Unlike the embodiment shown in Figure 1A, in the present embodiment, the quantity and arrangement of pressure sensitivity electric bridge are entered
The restriction of one step.
As shown in figure 9, in the DA of television area, at least three pressure sensitivity electric bridges are provided with color membrane substrates 92 (for example, pressure sensitivity
Electric bridge 931,932 and 933), and at least three pressure sensitivity electric bridges (for example, pressure sensitivity electric bridge 931,932 and 933) be present not same
On straight line, for example, pressure sensitivity electric bridge 931,932 and 933 triangular in shape can be arranged.
So, the signal that display panel can be detected by least three pressure sensitivity electric bridges not on the same line, while really
Determine touch pressure value and touch location.
Specifically, when a certain position on finger touch display panel (for example, position Tpoint), by each pressure sensitivity
The output signal of electric bridge, pressure value of each pressure sensitivity electric bridge in respective opening position can be obtained.
, can be according to the distance between two pressure sensitivity electric bridges and two pressure sensitivity for any two pressure sensitivity electric bridge
The pressure value that electric bridge detects, determine hanging down for the certain point that touch location Tpoint is located on two pressure sensitivity electric bridges place straight lines
On line direction (in display panel plane).
So, by least three three pressure sensitivity electric bridges not on the same line, it may be determined that touch location Tpoint institutes
At least two vertical lines (for example, vertical line p1、p2), and identified at least two vertical lines intersect at a point and (that is, touch position
Put Tpoint), so as to can determine that touch location Tpoint.
Then, the pressure being applied at touch location Tpoint is can determine that according to the pressure value of touch location and each pressure sensitivity electric bridge
Power size.
From the foregoing, it will be observed that in the present embodiment, by setting at least three pressure sensitivity not on the same line on color membrane substrates
Electric bridge, can be need not set touch detection electrodes in addition (for example, Fig. 6 first electrode 67, Fig. 7 the 3rd electrode RE/
4th electrode TE etc.) under conditions of simultaneously realize pressure detecting and touch control detection, so as to enormously simplify the structure of display panel
And preparation technology so that the thickness and cost of display panel can be reduced further.
Although Fig. 9, which is shown, is provided with three pressure sensitivity electric bridges 931,932 and 933 on color membrane substrates 92, this is only to show
Meaning property.It will be understood by those skilled in the art that other appropriate number of pressure sensitivity electric bridges can be set on color membrane substrates 92, such as,
Four or more.It should be appreciated that the pressure sensitivity electric bridge quantity set on color membrane substrates 92 is more, the spirit of pressure detecting and touch control detection
Sensitivity is higher.
Disclosed herein as well is a kind of touch control detecting method of display panel, has at least three not same for detecting
The display panel (for example, display panel shown in Fig. 9) of pressure sensitivity electric bridge on straight line.
Figure 10 shows the indicative flowchart of one embodiment of the touch control detecting method of the display panel of the application.
As shown in Figure 10, the touch control detecting method of display panel, including：
Step 1010, apply first voltage signal to each first input end, apply second voltage letter to each second input
Number.
Wherein, one in first voltage signal and second voltage signal can be ground signalling.
Step 1020, the output voltage detected between the first output end and the second output end of each pressure sensitivity electric bridge is poor, and root
The touch pressure value of each pressure sensitivity electric bridge sensing is calculated according to output voltage difference.
When finger touch display panel, display panel deforms upon, the first resistor of each pressure sensitivity electric bridge to the 4th resistance
Resistance also correspondingly change with the change of deformation quantity, pass through the first output end and the second output end and obtain each pressure sensitivity electric bridge
Output voltage it is poor, so as to which pressure value of each pressure sensitivity electric bridge in respective opening position be calculated.
Step 1030, positional information and touch pressure value based on each pressure sensitivity electric bridge, it is corresponding according to default pressure position
Relation determines touch location.
By at least three three pressure sensitivity electric bridges not on the same line, it may be determined that at least two where touch location
Vertical line, the intersection point of at least two vertical lines can determine that touch location, so as to realize touch control detection.
The touch control detecting method of the present embodiment, by least three three pressure sensitivity electric bridges not on the same line, pressing
Power realizes touch control detection while detection, without setting touch detection electrodes in addition on a display panel, so as to simplify
The structure and preparation technology of display panel.
Disclosed herein as well is a kind of display device, as shown in Figure 11.Wherein, display device 1100 may include as above
Display panel.It will be appreciated by those skilled in the art that display device in addition to including display panel as above, can also include
Some other known structures.For the emphasis of not fuzzy the application, no longer these known structures will be carried out further
Description.
The display device of the application can be any device for including display panel as above, include but is not limited to such as Figure 11
Shown cellular mobile phone 1100, tablet personal computer, the display of computer, applied to the display in Intelligent worn device
Device, applied to display device on the vehicles such as automobile etc..As long as display device contains display surface disclosed in the present application
The structure of plate, has just been contemplated as falling within the protection domain of the application.
The touch control detecting method of display panel, display device and display panel that the application provides, color membrane substrates are close to battle array
Pressure sensitivity electric bridge is provided with the viewing area of row substrate side, so as to realize high sensitivity in the case where not increasing frame region
Pressure detecting.
Above description is only the preferred embodiment of the application and the explanation to institute's application technology principle.People in the art
Member should be appreciated that invention scope involved in the application, however it is not limited to the technology that the particular combination of above-mentioned technical characteristic forms
Scheme, while should also cover in the case where not departing from the inventive concept, carried out by above-mentioned technical characteristic or its equivalent feature
The other technical schemes for being combined and being formed.Such as features described above has similar work(with (but not limited to) disclosed herein
The technical scheme that the technical characteristic of energy is replaced mutually and formed.
Claims (16)
1. a kind of display panel, it is characterised in that including the array base palte and color membrane substrates being oppositely arranged, in the color membrane substrates
The pressure sensitivity electric bridge for sensing touch-control pressure size, the pressure are provided with the viewing area of the side of the array base palte
Inductance bridge include be used for receive input signal first input end and the second input and for detecting voltage change first
Output end and the second output end.
2. display panel according to claim 1, it is characterised in that the pressure sensitivity electric bridge also includes first resistor, second
Resistance, 3rd resistor and the 4th resistance；
Wherein, the first input end electrically connects with the first end of the first resistor and the first end of the 3rd resistor, institute
State the first end of the second input and the second resistance and the first end of the 4th resistance electrically connects, first output end
Electrically connected with the second end of the first resistor and the second end of the second resistance, second output end and the described 3rd electricity
Second end of resistance and the second end electrical connection of the 4th resistance.
3. display panel according to claim 2, it is characterised in that the first resistor and the 4th resistance have pair
The sensitive serpentine wire of the pressure deformation of first direction, the second resistance and the 3rd resistor have the pressure to second direction
The sensitive serpentine wire of power deformation, the first direction intersect with the second direction.
4. display panel according to claim 3, it is characterised in that the pressure sensitivity electric bridge is formed by conductive metal material.
5. display panel according to claim 4, it is characterised in that the color membrane substrates also include black matrix", described
Pressure sensitivity electric bridge is located at the black matrix" close to the side of the array base palte；
Orthographic projection of the pressure sensitivity electric bridge to the black matrix" is located within the coverage of the black matrix".
6. display panel according to claim 3, it is characterised in that the pressure sensitivity electric bridge is formed by transparent conductive material.
7. display panel according to claim 6, it is characterised in that the color membrane substrates also include public electrode, described
Pressure sensitivity electrode is multiplexed with the public electrode.
8. display panel according to claim 1, it is characterised in that the array base palte is also multiple including array arrangement
First electrode, for detecting position of touch.
9. display panel according to claim 8, it is characterised in that the array base palte also includes public electrode, described
First electrode is multiplexed with the public electrode.
10. display panel according to claim 1, it is characterised in that the array base palte also includes arranging along third direction
Multiple second electrodes of cloth, the second electrode extend along fourth direction, and the third direction and the fourth direction intersect；
The color membrane substrates also include multiple 3rd electrodes arranged along the fourth direction, and the 3rd electrode is along the described 3rd
Direction extends.
11. display panel according to claim 10, it is characterised in that the 3rd electrode is located at the pressure sensitivity electric bridge
Same layer, and formed in the patterning process with along with.
12. display panel according to claim 1, it is characterised in that the display panel also includes integrated circuit, described
First input end is connected to the integrated circuit by the first signal lead, and second input is connected by secondary signal cabling
It is connected to the integrated circuit；
Wherein, first signal lead is equal with the resistance of the secondary signal cabling.
13. display panel according to claim 12, it is characterised in that first output end passes through the 3rd signal lead
The integrated circuit is connected to, second output end is connected to the integrated circuit by the 4th signal lead；
Wherein, the 3rd signal lead is equal with the resistance of the 4th signal lead.
14. display panel according to claim 3, it is characterised in that at least three institutes are provided with the color membrane substrates
State pressure sensitivity electric bridge, and at least three pressure sensitivity electric bridges be present not on the same line.
15. a kind of display device, it is characterised in that the display device includes the display surface described in claim any one of 1-14
Plate.
16. a kind of touch control detecting method of display panel, it is characterised in that the display panel includes the array base being oppositely arranged
Plate and color membrane substrates, at least three are provided with not in the viewing area of the side of the array base palte in the color membrane substrates
Pressure sensitivity electric bridge on the same line, the pressure sensitivity electric bridge include being used for first input end and the second input for receiving input signal
End and the first output end and the second output end for detecting voltage change；
The touch control detecting method includes：
Apply first voltage signal to each first input end, apply second voltage signal to each second input；
The output voltage detected between first output end of each pressure sensitivity electric bridge and second output end is poor, and according to
The output voltage difference calculates the touch pressure value of each pressure sensitivity electric bridge sensing；
Positional information and the touch pressure value based on each pressure sensitivity electric bridge, it is true according to default pressure position corresponding relation
Determine touch location.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710514284.XA CN107422510A (en) | 2017-06-29 | 2017-06-29 | Display panel, display device and touch detection method of display panel |
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| CN201710514284.XA CN107422510A (en) | 2017-06-29 | 2017-06-29 | Display panel, display device and touch detection method of display panel |
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