CN107340927A - Display panel and display device - Google Patents
Display panel and display device Download PDFInfo
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- CN107340927A CN107340927A CN201710615020.3A CN201710615020A CN107340927A CN 107340927 A CN107340927 A CN 107340927A CN 201710615020 A CN201710615020 A CN 201710615020A CN 107340927 A CN107340927 A CN 107340927A
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- pressure sensitive
- layer
- touch
- display panel
- electrode
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0412—Digitisers structurally integrated in a display
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0414—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means using force sensing means to determine a position
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- 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
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- 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
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Human Computer Interaction (AREA)
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- General Physics & Mathematics (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
This application discloses a kind of display panel and display device, is related to display technology field, and wherein display panel includes：Substrate, substrate are provided with viewing area and the non-display area around viewing area；It is arranged on the touch control electrode of viewing area；It is arranged on the pressure sensitive sensor of non-display area；And the pressure sensitive touch-control cabling of non-display area is arranged on, pressure sensitive touch-control cabling is electrically connected with pressure sensitive sensor, also, pressure sensitive touch-control cabling is set with touch control electrode with layer.Pressure sensitive touch-control cabling by being electrically connected with pressure sensitive sensor and positioned at non-display area is set with touch control electrode with layer, there are enough space placement force sensing touch-control cablings with the non-display area of layer with touch control electrode, simultaneously, the metal impedance of touch control electrode layer is relatively low, meet pressure sensitive touch-control cabling to low-impedance requirement, the resistance of pressure sensitive touch-control cabling can effectively be reduced, be advantageous to improve the signal intensity of pressure sensitive sensor, improve the performance of pressure sensitive sensor.
Description
Technical field
The application is related to display technology field, specifically, is related to a kind of display panel and display device.
Background technology
Touch-control display panel generally comprises display panel and contact panel two parts.When preparing touch-control display panel, most
Basic scheme is to prepare display panel and contact panel respectively first, then display panel and contact panel are bonded to be formed it is tactile
Control display panel.In addition, also On-cell and In-cell two schemes：So-called On-cell schemes refer in display surface
Touch-control circuit is formed on the surface of plate, without carrying out attaching process, is entered again with preparing display panel and contact panel respectively
The mode of row fitting is compared, and can reduce the thickness of touch-control display panel；And so-called In-cell schemes refer in display panel
(for example, between array base palte and color membrane substrates) form touch-control circuit, the touch-control display panel formed by this scheme
Thickness ratio On-cell schemes are also smaller.
The touch-control display panel prepared according to above-mentioned kinds of schemes is typically only capable of identifying the coordinate of X-direction and Y-direction, i.e., only
The position for the screen that user is pressed is can determine that, and the dynamics of screen is pressed for user, then can not be judged.Although
It can judge that user presses the dynamics of screen by way of introducing stress reaction sensor in display panel, but due to
The signal of pressure sensitive sensor output only has several or tens millivolts, therefore the pressure electrically connected with pressure sensitive sensor
The impedance needs of power sensing touch-control cabling design smaller.In view of the resistance of the drive signal line positioned at display panel non-display area
It is anti-relatively low, it is adapted to set pressure sensitive touch-control cabling and drive signal line with layer in principle, but display panel non-display area
Driven circuit and drive signal line take in most of region of both sides, are walked without enough space placement force sensing touch-controls
Line.
Therefore, in display panel introduce pressure sensitive sensor when how the position of reasonable Arrangement pressure sensitive touch-control cabling
It is set to as technical problem urgently to be resolved hurrily at this stage.
The content of the invention
In view of this, technical problems to be solved in this application there is provided a kind of display panel and display device, will press
Power senses touch-control cabling and set with touch control electrode with layer, has enough space placement forces with the non-display area of layer with touch control electrode
Sense touch-control cabling, meanwhile, the metal impedance of touch control electrode layer is relatively low, meets that pressure sensitive touch-control cabling is wanted to low-impedance
Ask, be capable of the resistance of effective smaller pressure sensitive touch-control cabling, be advantageous to improve the signal intensity of pressure sensitive sensor, carry
The performance of high pressure inductive pick-up.
In order to solve the above-mentioned technical problem, the application has following technical scheme：
In a first aspect, the application provides a kind of display panel, including：
Substrate, the substrate are provided with viewing area and the non-display area around the viewing area；
It is arranged on the touch control electrode of the viewing area；
It is arranged on the pressure sensitive sensor of the non-display area；And
It is arranged on the pressure sensitive touch-control cabling of the non-display area, the pressure sensitive touch-control cabling and the feeling of stress
Inductive sensing device is electrically connected, also, the pressure sensitive touch-control cabling is set with the touch control electrode with layer.
Alternatively, the touch control electrode is mutual capacitance type touch control electrode, including touch-control receiving electrode and touch-control emission electrode, institute
Pressure sensitive touch-control cabling is stated to set with layer with the touch-control receiving electrode or touch-control emission electrode.
Alternatively, the display panel also include be successively set on described substrate the same side thin film transistor array layer,
Light emitting functional layer and thin-film encapsulation layer；It is remote that the touch control electrode and the pressure sensitive touch-control cabling are located at the thin-film encapsulation layer
From the side of the substrate.
Alternatively, the thin film transistor array layer includes semiconductor active layer, gate metal layer and source-drain electrode metal level；
The gate metal layer is located at the semiconductor active layer close to the side of the substrate, or, the grid
Metal level is located at side of the semiconductor active layer away from the substrate.
Alternatively, the pressure sensitive sensor is set with the semiconductor active layer with layer.
Alternatively, the pressure sensitive sensor is set with gate metal layer or source-drain electrode metal level with layer.
Alternatively, the display panel also includes barrier wall structure, and the barrier wall structure is located at the non-display area and surround
The viewing area is set；
The pressure sensitive touch-control cabling is electrically connected by connecting via with the pressure sensitive sensor, described to connect
Hole position is in side of the barrier wall structure away from the viewing area.
Alternatively, the barrier wall structure is arranged on side of the thin film transistor array layer away from the substrate, described
Barrier wall structure contacts with the light emitting functional layer and the thin-film encapsulation layer respectively in the side close to the viewing area.
Alternatively, the light emitting functional layer includes anode layer, organic light emitting material and the cathode layer set gradually, described
Anode layer is set close to the thin film transistor array layer；The anode layer electrically connects with the drain metal layer.
Alternatively, the pressure sensitive sensor includes pressure sensitive electrode and electrically connected with the pressure sensitive electrode
Signal input part and signal output part, the pressure sensitive electrode be used for sense pressure signal and by the signal output part
Export pressure sensitivity detection signal.
Alternatively, the circumference shape of the pressure sensitive electrode is in quadrangle, is made up of semi-conducting material, including phase
To the first of setting while and when second, and the 3rd be oppositely arranged while and when the 4th；
The pressure sensitive sensor include positioned at described first while the first signal input part and positioned at described second while
Secondary signal input, first signal input part and the secondary signal input are used for the pressure sensitive electrode
Input offset voltage signal；
The pressure sensitive sensor is also included positioned at first signal output part on the 3rd side and positioned at the described 4th
The secondary signal output end on side, first signal output part and the secondary signal output end are used for from pressure sensitive electricity
Pole exports pressure sensitivity detection signal.
Alternatively, the circumference of the pressure sensitive electrode is shaped as square.
Alternatively, the pressure sensitive sensor include the first inductive reactance, the second inductive reactance, the 3rd inductive reactance and
4th inductive reactance and the first signal input part, secondary signal input, the first signal output part and secondary signal output end；
The first end and first signal of the first end of first inductive reactance and the 4th inductive reactance are defeated
Enter end electrical connection, the first end and first signal of the second end of first inductive reactance and second inductive reactance
Output end electrically connects, the second end of the 4th inductive reactance and the first end of the 3rd inductive reactance and the described second letter
The second end and described second of the electrical connection of number output end, the second end of second inductive reactance and the 3rd inductive reactance
Signal input part electrically connects；
First signal input part and the secondary signal input are used to input partially to the pressure sensitive sensor
Put voltage signal；First signal output part and the secondary signal output end are used to export from the pressure sensitive sensor
Pressure sensitivity detection signal.
Second aspect, the application provide a kind of display device, including display panel, and the display panel is provided herein
Display panel.
Compared with prior art, display panel described herein and display device, following effect has been reached：
In display panel provided by the present invention and display device, pressure sensitive sensor is introduced, and will be with pressure
Inductive pick-up is electrically connected and the pressure sensitive touch-control cabling positioned at non-display area is set with touch control electrode with layer, with touch control electrode
Non-display area with layer has enough space placement force sensing touch-control cablings, meanwhile, the metal impedance of touch control electrode layer is relatively low,
Meet pressure sensitive touch-control cabling to low-impedance requirement, can effectively reduce the resistance of pressure sensitive touch-control cabling, favorably
In the signal intensity for improving pressure sensitive sensor, the performance of raising pressure sensitive sensor.
Brief description of the drawings
Accompanying drawing described herein is used for providing further understanding of the present application, forms the part of the application, this Shen
Schematic description and description please is used to explain the application, does not form the improper restriction to the application.In the accompanying drawings：
Fig. 1 show a kind of sectional view of display panel provided herein；
Fig. 2 show a kind of top view of display panel provided herein；
Fig. 3 show another sectional view of display panel provided herein；
Fig. 4 show another sectional view of display panel provided herein；
Fig. 5 show another sectional view of display panel provided herein；
Fig. 6 show another sectional view of display panel provided herein；
Fig. 7 show another sectional view of display panel provided herein；
Fig. 8 show another sectional view of display panel provided herein；
Fig. 9 show another top view of display panel provided herein；
Figure 10 show a kind of top view of pressure sensitive sensor provided herein；
Figure 11 show the equivalent circuit diagram of pressure sensitive sensor in Figure 10；
Figure 12 show another top view of pressure sensitive sensor provided herein；
Figure 13 show a kind of structural representation of display device provided herein.
Embodiment
Some vocabulary has such as been used to censure specific components among specification and claim.Those skilled in the art should
It is understood that hardware manufacturer may call same component with different nouns.This specification and claims are not with name
The difference of title is used as the mode for distinguishing component, but is used as the criterion of differentiation with the difference of component functionally.Such as logical
The "comprising" of piece specification and claim mentioned in is an open language, therefore should be construed to " include but do not limit
In "." substantially " refer in receivable error range, those skilled in the art can be described within a certain error range solution
Technical problem, basically reach the technique effect.In addition, " coupling " one word is herein comprising any direct and indirect electric property coupling
Means.Therefore, if the first device of described in the text one is coupled to a second device, representing the first device can directly electrical coupling
The second device is connected to, or the second device is electrically coupled to indirectly by other devices or coupling means.Specification
Subsequent descriptions for implement the application better embodiment, so it is described description be for the purpose of the rule for illustrating the application,
It is not limited to scope of the present application.The protection domain of the application is worked as to be defined depending on appended claims institute defender.
Fig. 1 show a kind of sectional view of display panel provided herein, below in conjunction with Fig. 1 to display panel 100
Composition do brief introduction.Display panel 100 in the application includes substrate 10, and the substrate 10 is by with any appropriate of flexibility
Insulating materials be made, can be transparent, translucent or opaque.Cushion 30 is provided with the substrate 10, generally
Cushion 30 covers the whole upper surface of substrate 10.Be provided with the upper surface of cushion 30 thin film transistor array layer 20,
The top of thin film transistor array layer 20 is provided with light emitting functional layer 40, is provided with thin-film encapsulation layer in light emitting functional layer 40
50, touch control electrode layer 60 is provided with thin-film encapsulation layer, diaphragm 70 is provided with touch control electrode layer 60.Generally, film
Transistor array layer 20 includes：
Semiconductor active layer 25 on cushion 30, semiconductor active layer 25 include passing through doped N-type foreign ion
Or p type impurity ion and the source region and drain region that are formed, the region between source region and drain region is wherein
Undope the channel region of impurity, and semiconductor active layer 25 can make non-crystalline silicon change into polysilicon and shape by the crystallization of non-crystalline silicon
Into in order that recrystallized amorphous silicon, can utilize such as rapid thermal annealing (RTA) method, solid-phase crystallization (SPC) method, PRK
(ELA) method of annealing, crystallization inducing metal (MIC) method, metal induced lateral crystallization (MILC) method or continuously transverse solidifying (SLS) method
Etc. various methods；
Gate insulator 26 above semiconductor active layer 25, gate insulator 26 include such as silica, nitridation
The inorganic layer of silicon or metal oxide, and single or multiple lift can be included；
The first metal layer 21 in specific region on gate insulator 26, as the grid of thin film transistor (TFT), grid
May include golden (Au), silver-colored (Ag), copper (Cu), nickel (Ni), platinum (Pt), palladium (Pd), aluminium (Al), molybdenum (Mo) or chromium (Cr) individual layer or
Multilayer, or such as aluminium (Al):Neodymium (Nd) alloy, molybdenum (Mo):The alloy of tungsten (W) alloy；
Interlayer insulating film 24 above the first metal layer 21, interlayer insulating film 24 can be by silica or silicon nitrides etc.
Insulating inorganic layer formed, can also be formed by insulative organic layer；
Second metal layer 22 on interlayer insulating film 24, as the source electrode 27 and drain electrode 28 of thin film transistor (TFT),
Source electrode 27 and drain electrode 28 are electrically connected to source region and drain region by contact hole 29 respectively, and contact hole 29 is to pass through choosing
Remove to selecting property what gate insulator 26 and interlayer insulating film 24 were formed；And
Passivation layer 23 in second metal layer, passivation layer 23 can be formed by inorganic layers such as silica or silicon nitrides,
Also can be formed by organic layer.
Fig. 2 show a kind of top view of display panel provided herein, and Fig. 3 show provided herein show
Show another sectional view of panel, referring to Fig. 2 and Fig. 3, the display panel 100 in the application includes：
Substrate 10, substrate 10 are provided with viewing area 11 and the non-display area 12 around viewing area 11；
It is arranged on the touch control electrode 60 of viewing area 11；
It is arranged on the pressure sensitive sensor 80 of non-display area 12；And
The pressure sensitive touch-control cabling 81 of non-display area 12 is arranged on, pressure sensitive touch-control cabling 81 senses with pressure sensitive
Device 80 is electrically connected, also, pressure sensitive touch-control cabling 81 is set with touch control electrode 60 with layer.
Specifically, as can be seen from Figure 2, display panel 100 also includes control chip 90, each pressure sensitive in the application
Sensor 80 electrically connected with control chip 90, it is necessary to illustrate be illustrate only in Fig. 2 partial pressure inductive pick-up 80 with
The connection of control chip 90, the connection figure of all pressure sensitive sensors 80 and control chip 90 is not showed that.Fig. 3 is shown
The sectional view of part viewing area 11 and part non-display area 12 in display panel 100, from figure 3, it can be seen that aobvious in the application
Show that panel 100 is provided with pressure sensitive sensor 80 in non-display area 12, pressure sensitive sensor 80 is walked with pressure sensitive touch-control
Line 81 electrically connects, and pressure sensitive touch-control cabling 81 electrically connects (position is shown herein) with control chip 90, and control chip 90 passes through pressure
Power sensing touch-control cabling 81 provides voltage to pressure sensitive sensor 80, and pressure sensitive touch-control cabling 81 is with being located at viewing area
11 touch control electrode 60 is set with layer, in this way, having enough space placement forces with the non-display area 12 of layer with touch control electrode 60
Sense touch-control cabling 81, meanwhile, the metal impedance of 60 layers of touch control electrode is relatively low, meets pressure sensitive touch-control cabling 81 to Low ESR
Requirement, can effectively reduce the resistance of pressure sensitive touch-control cabling 81, when controllable chip 90 passes through pressure sensitive touch-control
When cabling 81 is to the transmission voltage of pressure sensitive sensor 80, the voltage that pressure sensitive touch-control cabling 81 is consumed will be seldom, and this is just
So that most of voltage that control chip 90 transmits all applies to pressure sensitive sensor 80, in this way, being advantageous to improve feeling of stress
The signal intensity of inductive sensing device 80, improve the performance of pressure sensitive sensor 80.
Alternatively, the touch control electrode 60 in the application is mutual capacitance type touch control electrode 60, including touch-control receiving electrode 61 and is touched
Emission electrode 62 is controlled, pressure sensitive touch-control cabling 81 is set with touch-control receiving electrode 61 or touch-control emission electrode 62 with layer.
Specifically, Fig. 4 show another sectional view of display panel 100 provided herein, and Fig. 5 show this Shen
Another sectional view of the display panel 100 please provided.Touch control electrode 60 in Fig. 4 and embodiment illustrated in fig. 5 uses mutual tolerance
Formula touch control electrode is formed, and mutual capacitance type touch control electrode includes the touch-control receiving electrode 61 and touch-control emission electrode 62 positioned at different layers.
Referring to Fig. 4, the pressure sensitive touch-control cabling 81 in the application can be arranged on same layer with touch-control receiving electrode 61, except such a mode
Outside, referring to Fig. 5, the pressure sensitive touch-control cabling 81 in the application can also be set with touch-control emission electrode 62 with layer.Touch-control receives
Electrode 61 and the generally use metal material of touch-control emission electrode 62 are made, and impedance is relatively low, meets pressure in the application
Touch-control cabling 81 is sensed to low-impedance requirement, and therefore, the pressure sensitive touch-control cabling 81 in the application can receive electricity with touch-control
Pole 61 or touch-control emission electrode 62 are set with layer, and less with impedance touch-control receiving electrode 61 or touch-control sender electrode 62 are set with layer
It is equipped with beneficial to the resistance for reducing pressure sensitive touch-control cabling 81, improves the feeling of stress electrically connected with pressure sensitive touch-control cabling 81
The signal value of inductive sensing device 80 so that the pressure signal that pressure sensitive sensor 80 is transmitted by pressure sensitive touch-control cabling 81 is more
Add and be easily identified, be advantageous to be lifted in display panel 100 pressure sensitive sensor 80 to the sensitivity of pressure.
Alternatively, display panel 100 also includes thin film transistor array layer 20, the hair for being successively set on the same side of substrate 10
Light functional layer 40 and thin-film encapsulation layer 50；Touch control electrode 60 and pressure sensitive touch-control cabling 81 are located at thin-film encapsulation layer 50 away from base
The side at bottom 10.
Specifically, Fig. 3-Fig. 5 is referred to, is disposed with thin film transistor array layer 20, lighting function on the substrate 10
Layer 40 and thin-film encapsulation layer 50, thin film transistor array layer 20 control light emitting functional layer 40 to carry out image and shown, sealed by film
Dress layer 50 light emitting functional layer 40 is isolated with outside moisture and oxygen, avoid light emitting functional layer 40 by the influence of moisture oxygen and
It can not normally show, touch control electrode 60 and pressure sensitive touch-control cabling are set in side of the thin-film encapsulation layer 50 away from substrate 10
81.It is that touch function is realized by the effect of touch control electrode 60 in view of display panel 100, the application sets touch control electrode 60
Put the side surface away from substrate 10 in thin-film encapsulation layer 50 so that during the touch between the finger of people and touch control electrode 60
Distance become smaller, therefore touch control electrode 60 can more delicately experience the external world touch, and can in time to the external world
Touch is reacted, thus such a set-up mode is advantageous to improve the touch-control sensitivity of display panel 100.Meanwhile to meet to press
Power sensing touch-control cabling 81 is required and in view of the special case of non-display area 12 on display panel 100, this Shen low-impedance
Please pressure sensitive touch-control cabling 81 and touch control electrode 60 are set with layer, using the relatively low metal of impedance as pressure sensitive touch-control
Cabling 81, enabling the effective resistance for reducing pressure sensitive touch-control cabling 81, be advantageous to improve pressure sensitive sensor 80
Signal intensity, improve sensing performance of the pressure sensitive sensor 80 to pressure.
Alternatively, thin film transistor array layer 20 includes semiconductor active layer 25, gate metal layer 21 and source-drain electrode metal
Layer 27 and 28；Gate metal layer 21 is located at semiconductor active layer 25 close to the side of substrate 10, or, gate metal layer 21 is positioned at half
Side of the conductor active layer 25 away from substrate 10.
Specifically, the thin film transistor (TFT) in the application in thin film transistor array layer 20 can also be used using top gate structure
Bottom grating structure, thin film transistor array layer 20 include semiconductor active layer 25, gate metal layer 21 and the and of source-drain electrode metal level 27
28, when gate metal layer 21 is located at side of the semiconductor active layer 25 away from substrate 10, be presented as top gate structure, referring to Fig. 3-
Fig. 5, when the thin film transistor (TFT) in display panel 100 uses top gate structure, it is easier to which designing simultaneously has longer service life；When
When gate metal layer 21 is located at semiconductor active layer 25 close to the side of substrate 10, bottom grating structure is presented as, referring to Fig. 6, Fig. 6 institutes
It is shown as another sectional view of display panel 100 provided herein, the thin film transistor (TFT) in display panel 100 uses bottom gate
During structure, the high stability of density and the high degree of flexibility of manufacturing process can be reached.
Alternatively, referring to Fig. 3-Fig. 6, the pressure sensitive sensor 80 in the application is set with semiconductor active layer 25 with layer
Put.
Specifically, pressure sensitive touch-control cabling 81 is passed through referring to Fig. 2, pressure sensitive sensor 80 provided herein
Control chip 90 is connected to, voltage is provided to pressure sensitive sensor 80 by pressure sensitive touch-control cabling 81 from control chip 90
Signal.Set continuing with referring to Fig. 3-Fig. 6, pressure sensitive sensor 80 with semiconductor active layer 25 with layer, it is contemplated that semiconductor
Active layer 25 has larger sheet resistance, when pressure sensitive sensor 80 and semiconductor active layer 25 are set with layer, pressure sensitive
The resistance of sensor 80 will be larger, and because the resistance of pressure sensitive touch-control cabling 81 is smaller, control chip 90 is passing through feeling of stress
When answering touch-control cabling 81 to the transmission voltage of pressure sensitive sensor 80, the most of voltage exported by control chip 90 will all apply
On pressure sensitive sensor 80, in this way, display panel 100, when the effect by external force deforms upon, pressure sensitive passes
Sensor 80 can sense bigger deformation signal, hence in so that the deformation signal of display panel 100 is more prone to by pressure sensitive
Sensor 80 is sensed.
Alternatively, pressure sensitive sensor 80 is set with gate metal layer 21 or source-drain electrode metal level 27 and 28 with layer.
Specifically, except by the way of Fig. 3-embodiment illustrated in fig. 6 by pressure sensitive sensor 80 and semiconductor active layer
25 is outer with layer setting, and referring to Fig. 7 and Fig. 8, Fig. 7 show another sectional view of display panel provided herein, Fig. 8 institutes
Another sectional view of display panel provided herein is shown as, the application can also be by pressure sensitive sensor 80 and grid gold
Belong to layer 21 to set with layer, referring to Fig. 7, in addition, can also set pressure sensitive sensor 80 and source-drain electrode metal level 27 and 28 with layer
Put, referring to Fig. 8.Gate metal layer 21 and the sheet resistance of source-drain electrode metal level 27 and 28 are also larger, by pressure sensitive sensor 80 with
When gate metal layer 21 or source-drain electrode metal level 27 and 28 are set with layer, the resistance of pressure sensitive sensor 80 is also larger, and examines
It is smaller to consider the resistance of the pressure sensitive touch-control cabling 81 electrically connected with pressure sensitive sensor 80, when control chip 90 passes through pressure
When power sensing touch-control cabling 81 is to the transmission voltage of pressure sensitive sensor 80, most of voltage will all be loaded into pressure sensitive sensing
On device 80, and the voltage very little consumed by pressure sensitive touch-control cabling 81, so occurred in display panel 100 by external force
During deformation, pressure sensitive sensor 80 can more delicately sense the deformation.
It should be noted that in actual production process, can by contrast select in 100 each film layer of display panel sheet resistance compared with
Big film layer sets pressure sensitive sensor 80, to enable pressure sensitive to obtain more pressure signals, so as to
More delicately sense the deformation of display panel 100.
Alternatively, display panel 100 also includes barrier wall structure 71, and barrier wall structure 71 is located at non-display area 12 and around display
Area 11 is set；Pressure sensitive touch-control cabling 81 is electrically connected by connecting via 82 with pressure sensitive sensor 80, connects via 82
Positioned at side of the barrier wall structure 71 away from viewing area 11.It should be noted that thin-film encapsulation layer 50 is generally by inorganic layer and organic
Layer is alternately stacked to be formed, and the thin-film encapsulation layer in the application Fig. 3-embodiment illustrated in fig. 8 is by two layers of inorganic layer 51 and 52 and position
Organic layer between two layers of inorganic layer 51 and 52 is formed, and two layers of inorganic layer 51 and 52 can effectively obstruct water oxygen.In reality
In production process, two layers of inorganic layer 51 and 52 will extend over barrier wall structure 71, and film crystalline substance is spread to along the side of barrier wall structure 71
The surface of body pipe pipe array layer 20.Electrically connected by sensing touch-control cabling 81 by connecting via 82 with pressure sensitive sensor 80
During, by carrying out punching to the inorganic layer 51 and 52 on the surface of thin film transistor array layer 20 until reaching source-drain electrode metal
Layer 27 and 28, then one or more layers metal level is plated in the side further along barrier wall structure 71, until pressure sensitive touch-control cabling 81
Electrically connected with pressure sensitive sensor 80.
Specifically, Fig. 9 show another top view of display panel provided herein.It can be seen in fig. 9 that this Shen
Please in display panel 100 included by barrier wall structure 71 set and be located at non-display area 12 around viewing area 11, with reference to figure
3- Fig. 8, the pressure sensitive touch-control cabling 81 in the application are located at different film layers from pressure sensitive sensor 80, and the two passes through connection
Via 82 electrically connects, and connection via 82 sets close to barrier wall structure 71 and is located at side of the barrier wall structure 71 away from viewing area 11.
During thin-film package, barrier wall structure 71 can play effective barrier effect to liquid packaging plastic, avoid liquid from encapsulating
Glue spreads and can not play reliable packaging effect, the application by pressure sensitive touch-control cabling 81 and pressure sensitive sensor 80 it
Between connection via 82 be arranged on side of the barrier wall structure 71 away from viewing area 11, do not interfere with barrier wall structure 71 to packaging plastic
Barrier effect, packaging effect will not also be impacted even if connection via 82 is introduced.
Alternatively, barrier wall structure 71 is arranged on side of the thin film transistor array layer 20 away from substrate 10, barrier wall structure 71
Contacted respectively with light emitting functional layer 40 and thin-film encapsulation layer 50 in the side close to viewing area 11.
Specifically, Fig. 3-Fig. 6 is referred to, is running through film perpendicular to the direction of the place plane of substrate 10, barrier wall structure 71
Encapsulated layer 50 and light emitting functional layer 40 are set, positioned at side of the thin film transistor array layer 20 away from substrate 10, barrier wall structure 71
Side contacted respectively with light emitting functional layer 40 and thin-film encapsulation layer 50.In this way, during thin-film package is carried out, barricade knot
Structure 71 can stop that liquid packaging plastic spreads, and packaging plastic is consolidated on surface of the light emitting functional layer 40 away from the side of substrate 10
Change, be additionally, since barrier wall structure 71 and be located at non-display area 12, therefore packaging plastic be in addition to can viewing area 11 be encapsulated, non-
Viewing area 12 can also covering part packaging plastic, be so designed that and be able to ensure that light emitting functional layer 40 by relieved package, therefore, packaging plastic
Can effectively prevent the external world moisture and oxygen contacted with light emitting functional layer 40, avoid light emitting functional layer 40 with the external world moisture and
Oxygen contacts and causes light emitting functional layer 40 not play a role normally.
Alternatively, light emitting functional layer 40 includes anode layer, organic light emitting material and the cathode layer set gradually, anode layer
Set close to thin film transistor array layer 20；Anode layer electrically connects with drain metal layer.
Specifically, Fig. 3-Fig. 8 is referred to, it is remote that the light emitting functional layer 40 in the application is arranged on thin film transistor array layer 20
From the side of substrate 10, successively including anode layer 43, organic light emitting material 42 and cathode layer 41, cathode layer 41 and film crystal
The drain metal layer 28 of pipe electrically connects.After driving thin film transistor (TFT) conducting in the application, outside under alive driving, hole
It is injected into respectively from anode layer 43 and cathode layer 41 in organic light emitting material 42 with electronics, hole and electronics are in organic light emission material
Met in the bed of material 42, be compound, given off energy, then transferring energy to point of organic luminescent substance in luminous organic material
Son, make it from ground state transition to excitation state.Excitation state is very unstable, and excited molecule returns to ground state, radiation transistion production from excitation state
Hair tonic optical phenomenon, based on this luminescence phenomenon, the display of picture can be realized by Organic Light Emitting Diode.
Alternatively, pressure sensitive sensor 80 includes pressure sensitive electrode 800 and electrically connected with pressure sensitive electrode 800
Signal input part and signal output part, pressure sensitive electrode 800 be used for sense pressure signal and exported by signal output part
Pressure sensitivity detection signal.
Specifically, Figure 10 show a kind of top view of pressure sensitive sensor 80 provided herein, can from Figure 10
Find out, the pressure sensitive sensor 80 in the application includes pressure sensitive electrode 800, the first signal input part Vin1, the second letter
Number input Vin2, the first signal output part Vout1 and secondary signal output end vo ut2, by two signal input parts to pressure
The input voltage signal of power inductive pick-up 80, when display panel 100 deforms upon, pressure sensitive electrode 800 is according to distortion sensing
Pressure sensitivity detection signal is exported to pressure signal and by signal output part.
Alternatively, with continued reference to Figure 10, the circumference shape of pressure sensitive electrode 800 is in quadrangle, is semiconductor material
Material is made, including first be oppositely arranged be at 801 and second 802, and the 3rd be oppositely arranged is at 803 and the 4th 804；
Pressure sensitive sensor 80 include positioned at first while 801 the first signal input part Vin1 and positioned at second while 802 second letter
Number input Vin2, the first signal input part Vin1 and secondary signal input Vin2 are used to input to pressure sensitive electrode 800
Biasing voltage signal；Pressure sensitive sensor 80 is also included positioned at the first signal output part Vout1 on the 3rd side 803 and positioned at the
Secondary signal the output end vo ut2, the first signal output part Vout1 and secondary signal output end vo ut2 on four sides 804 are used for from pressure
Power induction electrode 800 exports pressure sensitivity detection signal.
Specifically, Figure 11 show the equivalent circuit diagram of pressure sensitive sensor 80 in Figure 10.Referring to Figure 10 and Figure 11, change
Pressure sensitive sensor 80 is equivalent to a Wheatstone bridge, and the Wheatstone bridge includes four equivalent resistances, respectively equivalent
Resistance Ra, Rb, Rc and Rd, the region between wherein secondary signal input Vin2 and the first signal output part Vout1 are equivalent
Region between resistance Ra, secondary signal input Vin2 and secondary signal output end vo ut2 is equivalent resistance Rb, the first signal
Region between input Vin1 and the first signal output part Vout1 is equivalent resistance Rd, the first signal input part Vin1 and the
Region between binary signal output end vo ut2 is equivalent resistance Rc.When the first signal input part Vin1 and secondary signal input
During Vin2 input offset voltage signals, each branch road passes through by electric current in Wheatstone bridge.Now, when pressing display panel 100,
Pressure sensitive sensor 80 because by display panel 100 shearing force of corresponding opening position act on, it is internal etc.
At least one impedance changes in effect resistance Ra, Rb, Rc and Rd, so that the first signal of pressure sensitive sensor 80 is defeated
The first of pressure sensitive sensor 80 when going out to hold Vout1 and secondary signal output end vo ut2 pressure sensitivity detection signal with without pressing
The pressure sensitivity detection signal that signal output part Vout1 and secondary signal output end vo ut2 is exported is different, accordingly, it may be determined that touch-control
The size of pressure.
Alternatively, the circumference of pressure sensitive electrode 800 is shaped as square.In this way, advantageously allow equivalent resistance
Ra, Rb, Rc are identical with Rd resistance, so, in the case of without pressing, the first signal output part Vout1 and secondary signal output
Hold the current potential between Vout2 equal, in this way, the pressure sensitivity of the first signal output part Vout1 and secondary signal output end vo ut2 outputs
Detection signal is 0, is so advantageous to simplify the calculating process of pressure value, and improve the sensitivity of pressure detecting.
Alternatively, Figure 12 show another top view of pressure sensitive sensor provided herein, pressure sensitive
Sensor 80 include the first inductive reactance R1, the second inductive reactance R2, the 3rd inductive reactance R3 and the 4th inductive reactance R4 and
First signal input part Vin1, secondary signal input Vin2, the first signal output part Vout1 and secondary signal output end
Vout2；First inductive reactance R1 first end a and the 4th inductive reactance R4 first end a ' and the first signal input part Vin1
Electrical connection, the first inductive reactance R1 the second end b and the second inductive reactance R2 first end b ' and the first signal output part
Vout1 is electrically connected, and the 4th inductive reactance R4 the second end d and the 3rd inductive reactance R3 first end d ' and secondary signal export
Vout2 is held to electrically connect, the second inductive reactance R2 the second end c and the 3rd inductive reactance R3 the second end c ' and secondary signal are defeated
Enter to hold Vin2 to electrically connect；First signal input part Vin1 and secondary signal input Vin2 is used for defeated to pressure sensitive sensor 80
Enter biasing voltage signal；First signal output part Vout1 and secondary signal output end vo ut2 is used for from pressure sensitive sensor 80
Export pressure sensitivity detection signal.
Specifically, continuing with referring to Figure 12, the first inductive reactance R1, the second inductive reactance R2, the 3rd inductive reactance R3 and
4th inductive reactance R4 forms wheatstone bridge configuration.When defeated to the first signal input part Vin1 and secondary signal input Vin2
When entering biasing voltage signal, each branch road has electric current to pass through in Wheatstone bridge.Now, when pressing display panel 100, feeling of stress
Inductive sensing device 80 by the shearing force in its corresponding position on the display panel 100 because being acted on, its internal each resistance (bag
Include the first inductive reactance R1, the second inductive reactance R2, the 3rd inductive reactance R3 and the 4th inductive reactance R4) impedance become
Change, so that the pressure of the first signal output part Vout1 and secondary signal output end vo the ut2 output of pressure sensitive sensor 80
The the first signal output part Vout1 and secondary signal output end of pressure sensitive sensor 80 when feeling detection signal with without pressing
The pressure sensitivity detection signal of Vout2 outputs is different, accordingly, it may be determined that the size of touch-control pressure.
Based on same inventive concept, the application also provides a kind of display device, and referring to Figure 13, Figure 13 show the application institute
A kind of structural representation of the display device of offer, display device 200 provided herein, including display panel 100, this is aobvious
It is display panel 100 provided herein to show panel 100.Display device provided herein can be：Mobile phone, flat board electricity
Any product or part with real function such as brain, television set, display, notebook computer, DPF, navigator.This
The embodiment of display device 200 can be found in the embodiment of above-mentioned display panel 100 in application, and repeating part, here is omitted.
By various embodiments above, beneficial effect existing for the application is：
In display panel provided by the present invention and display device, pressure sensitive sensor is introduced, and will be with pressure
Inductive pick-up is electrically connected and the pressure sensitive touch-control cabling positioned at non-display area is set with touch control electrode with layer, with touch control electrode
Non-display area with layer has enough space placement force sensing touch-control cablings, meanwhile, the metal impedance of touch control electrode layer is relatively low,
Meet pressure sensitive touch-control cabling to low-impedance requirement, can effectively reduce the resistance of pressure sensitive touch-control cabling, favorably
In the signal intensity for improving pressure sensitive sensor, the performance of raising pressure sensitive sensor.
Some preferred embodiments of the application have shown and described in described above, but as previously described, it should be understood that the application
Be not limited to form disclosed herein, be not to be taken as the exclusion to other embodiment, and available for various other combinations,
Modification and environment, and above-mentioned teaching or the technology or knowledge of association area can be passed through in the scope of the invention is set forth herein
It is modified., then all should be in this Shen and the change and change that those skilled in the art are carried out do not depart from spirit and scope
Please be in the protection domain of appended claims.
Claims (14)
- A kind of 1. display panel, it is characterised in that including：Substrate, the substrate are provided with viewing area and the non-display area around the viewing area；It is arranged on the touch control electrode of the viewing area；It is arranged on the pressure sensitive sensor of the non-display area；AndThe pressure sensitive touch-control cabling of the non-display area is arranged on, the pressure sensitive touch-control cabling passes with the pressure sensitive Sensor is electrically connected, also, the pressure sensitive touch-control cabling is set with the touch control electrode with layer.
- 2. display panel according to claim 1, it is characterised in that：The touch control electrode is mutual capacitance type touch control electrode, bag Touch-control receiving electrode and touch-control emission electrode are included, the pressure sensitive touch-control cabling is launched with the touch-control receiving electrode or touch-control Electrode is set with layer.
- 3. display panel according to claim 1, it is characterised in that：The display panel is also described including being successively set on The thin film transistor array layer, light emitting functional layer and thin-film encapsulation layer of substrate the same side；The touch control electrode and the pressure sensitive touch-control cabling are located at side of the thin-film encapsulation layer away from the substrate.
- 4. display panel according to claim 3, it is characterised in that：The thin film transistor array layer has including semiconductor Active layer, gate metal layer and source-drain electrode metal level；The gate metal layer is located at the semiconductor active layer close to the side of the substrate, or, the gate metal Layer is located at side of the semiconductor active layer away from the substrate.
- 5. display panel according to claim 4, it is characterised in that：The pressure sensitive sensor has with the semiconductor Active layer is set with layer.
- 6. display panel according to claim 4, it is characterised in that：The pressure sensitive sensor and gate metal layer or Source-drain electrode metal level is set with layer.
- 7. display panel according to claim 3, it is characterised in that：The display panel also includes barrier wall structure, described Barrier wall structure is located at the non-display area and set around the viewing area；The pressure sensitive touch-control cabling is electrically connected by connecting via with the pressure sensitive sensor, described to connect hole position In side of the barrier wall structure away from the viewing area.
- 8. display panel according to claim 7, it is characterised in that：The barrier wall structure is arranged on the thin film transistor (TFT) Side of the array layer away from the substrate, the barrier wall structure close to the viewing area side respectively with the lighting function Layer and thin-film encapsulation layer contact.
- 9. display panel according to claim 4, it is characterised in that：The light emitting functional layer includes the anode set gradually Layer, organic light emitting material and cathode layer, the anode layer are set close to the thin film transistor array layer；The anode layer with The drain metal layer electrical connection.
- 10. display panel according to claim 1, it is characterised in that：The pressure sensitive sensor includes pressure sensitive Electrode and the signal input part and signal output part electrically connected with the pressure sensitive electrode, the pressure sensitive electrode are used for Sense pressure signal and pressure sensitivity detection signal is exported by the signal output part.
- 11. display panel according to claim 10, it is characterised in that：The circumference shape of the pressure sensitive electrode In quadrangle, be made up of semi-conducting material, including first be oppositely arranged while and when second, and the 3rd side being oppositely arranged and 4th side；The pressure sensitive sensor include positioned at described first while the first signal input part and positioned at described second while the Binary signal input, first signal input part and the secondary signal input are used to input to the pressure sensitive electrode Biasing voltage signal；The pressure sensitive sensor also include positioned at the described 3rd while the first signal output part and positioned at the described 4th while Secondary signal output end, first signal output part and the secondary signal output end are used for defeated from the pressure sensitive electrode Go out pressure sensitivity detection signal.
- 12. display panel according to claim 11, it is characterised in that：The circumference shape of the pressure sensitive electrode For square.
- 13. display panel according to claim 1, it is characterised in that：The pressure sensitive sensor includes the first sensing Resistance, the second inductive reactance, the 3rd inductive reactance and the 4th inductive reactance and the first signal input part, secondary signal input End, the first signal output part and secondary signal output end；The first end of first inductive reactance and the first end of the 4th inductive reactance and first signal input part The first end of electrical connection, the second end of first inductive reactance and second inductive reactance and first signal output End electrical connection, the second end of the 4th inductive reactance and the first end of the 3rd inductive reactance and the secondary signal are defeated Go out end electrical connection, the second end and the secondary signal of the second end of second inductive reactance and the 3rd inductive reactance Input electrically connects；First signal input part and the secondary signal input are used to input biased electrical to the pressure sensitive sensor Press signal；First signal output part and the secondary signal output end are used to export pressure sensitivity from the pressure sensitive sensor Detection signal.
- 14. a kind of display device, including display panel, it is characterised in that the display panel is any for claim 1 to 13 Described display panel.
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| CN201710615020.3A CN107340927B (en) | 2017-07-25 | 2017-07-25 | Display panel and display device |
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| CN201710615020.3A CN107340927B (en) | 2017-07-25 | 2017-07-25 | Display panel and display device |
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| CN107340927B CN107340927B (en) | 2020-08-25 |
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| CN107340927B (en) | 2020-08-25 |
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