CN106855760A - Have the touch control display apparatus of pressure-sensing function - Google Patents

Have the touch control display apparatus of pressure-sensing function Download PDF

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Publication number
CN106855760A
CN106855760A CN201610129650.5A CN201610129650A CN106855760A CN 106855760 A CN106855760 A CN 106855760A CN 201610129650 A CN201610129650 A CN 201610129650A CN 106855760 A CN106855760 A CN 106855760A
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China
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electrode
electrode layer
display apparatus
touch
layer
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CN201610129650.5A
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CN106855760B (en
Inventor
蔡嘉豪
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Innolux Corp
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Innolux Display Corp
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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
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/0414—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means using force sensing means to determine a position
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • 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
    • G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
    • G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
    • G06F2203/04103—Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
    • G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
    • G06F2203/04112—Electrode mesh in capacitive digitiser: electrode for touch sensing is formed of a mesh of very fine, normally metallic, interconnected lines that are almost invisible to see. This provides a quite large but transparent electrode surface, without need for ITO or similar transparent conductive material

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Liquid Crystal (AREA)
  • Position Input By Displaying (AREA)

Abstract

The present invention discloses a kind of touch control display apparatus for having pressure-sensing function, including first substrate layer, second substrate layer, first electrode layer, the second electrode lay and controller.First substrate layer includes multiple pixels and multiple transistors.Second substrate layer is oppositely arranged with first substrate layer.First and second electrode layer is respectively formed on first and second substrate layer.Electric capacity is formed between first and second electrode layers.Controller exports the first signal when touch control display apparatus operate in display pattern to first electrode layer makes it as the common electrode layer of pixel, and makes it as touch control electrode layer to first electrode layer output secondary signal when control mode touch mode.When control mode touch mode, controller will sense output signal and is compared with multiple threshold values, and to judge whether touch event, and the touch event for occurring is plane touch event or pressing touch event.

Description

Have the touch control display apparatus of pressure-sensing function
Technical field
The present invention relates to a kind of touch control display apparatus, and more particularly to a kind of touch-control for possessing pressure-sensing function is aobvious Showing device.
Background technology
Touch control display apparatus have been widely used in the middle of various electronic product, seem Smartphone, panel computer, Electricity etc..It is lifting user's experience, a kind of touch control display apparatus for possessing pressure-sensing function is more proposed on the market.It is this kind of Touch control display apparatus except can the track moved in touch surface of sensing finger/stylus, more can be in response to different pressings Power and trigger corresponding operation.However, this kind of touch control display apparatus are often needed additionally by the folded structure of pressure sensor in panel The back side so that the cost and manufacture difficulty of related spare part increase, more likely causes the raising of plate thickness or influence liquid crystal Show the penetrance of panel.
Therefore, how to improve the performance of the touch control display apparatus for possessing pressure-sensing function and reduce its manufacturing cost, be One of problem that current industry is endeavoured.
The content of the invention
It is an object of the invention to provide a kind of touch control display apparatus for possessing pressure-sensing function.By in contact panel Second substrate layer (such as colored filter substrate or transparency carrier) inner side one layer of electrode of laying with first substrate layer (such as pixel Thin film transistor base plate) on electrode the electric capacity of formation one so that the produced sensing after being pressed of touch control display apparatus is defeated Going out signal can be remarkably reinforced.Consequently, it is possible to controller need to only be sent out by judging that the size of sensing output signal can be told Raw touch event is a plane touch event or a pressing touch event.This framework can be not only saved for pressure-sensing function And the demand of additional pressure sensor, the quality of coherent signal can be more lifted, to improve overall touch-control and display performance.
According to an aspect of the invention, it is proposed that a kind of touch control display apparatus.Touch control display apparatus include first substrate layer, the Two substrate layers, first electrode layer, the second electrode lay and controller.First substrate layer includes multiple pixels and multiple transistors. Second substrate layer is oppositely arranged with first substrate layer.First electrode layer is formed on first substrate layer, and between first substrate Between layer and second substrate layer.The second electrode lay is formed on second substrate layer, and between first substrate layer and second substrate Between layer, electric capacity is formed with first electrode layer.Controller electrically connects first electrode layer, to be operated in touch control display apparatus The first signal is exported to first electrode layer during display pattern, makes first electrode layer as the common electrode layer of pixel, and in touch-control Display device exports secondary signal when operating in control mode touch mode to first electrode layer, makes first electrode layer as touch control electrode layer. Wherein, when touch control display apparatus operate in control mode touch mode, controller is based on electric capacity and produces sensing output signal, and judges that sensing is defeated Go out signal value whether across the first threshold values to detect whether touch event, controller more judge sense output signal value Whether it is plane touch event or presses touch event to differentiate occurred touch event across the second threshold values.
More preferably understand to have to above-mentioned and other aspect of the invention, preferred embodiment cited below particularly, and coordinate institute Accompanying drawing, is described in detail below：
Brief description of the drawings
Fig. 1 illustrates the generalized section according to the touch control display apparatus of one embodiment of the invention；
Fig. 2 to Fig. 4 illustrates the upper schematic diagram of the first electrode layer of different implementation aspects；
Fig. 5 illustrates touch control display apparatus operation in different mode, controller to the operation of the coherent signal of transistor one Illustrate and be intended to；
Fig. 6 to Fig. 8 illustrates the second electrode lay realized with Different electrodes pattern；
Fig. 9 (a) illustrates the generalized section according to the touch control display apparatus of one embodiment of the invention；
Fig. 9 (b) is illustrated when touch event betides the schematic diagram of touch control display apparatus；
Figure 10 illustrates an oscillogram of sensing output signal；
Figure 11 illustrates another oscillogram of sensing output signal；
Figure 12 illustrates the generalized section according to the touch control display apparatus of one embodiment of the invention；
Figure 13 illustrates the generalized section according to the touch control display apparatus of one embodiment of the invention；
Figure 14 illustrates the generalized section according to the touch control display apparatus of one embodiment of the invention；
Figure 15 illustrates the generalized section according to the touch control display apparatus of one embodiment of the invention；
Figure 16 (a) illustrates the generalized section according to the touch control display apparatus of one embodiment of the invention；
Figure 16 (b) is illustrated when touch event occurs, the generalized section of touch control display apparatus；
Figure 16 (c) illustrates the relevant equivalent circuit diagram of touch control display apparatus when occurring without touch event；
Figure 16 (d) illustrates the relevant equivalent circuit diagram of touch control display apparatus when plane touch event occurs；
Figure 16 (e) illustrates the relevant equivalent circuit diagram of touch control display apparatus when pressing touch event occurs；
Figure 17 illustrates an oscillogram of sensing output signal；
Figure 18 illustrates another oscillogram of sensing output signal；
Figure 19 illustrates a top view of first electrode layer and the second electrode lay；
Figure 20 illustrates a section view when touch event occurs according to the touch control display apparatus of one embodiment of the invention Figure；
Figure 21 illustrates a section view when touch event occurs according to the touch control display apparatus of one embodiment of the invention Figure；
Figure 22 (a)~Figure 22 (b) illustrates the phase of touch control display apparatus as shown in Figure 20, Figure 21 under different touch events Close equivalent circuit diagram.
Figure 23 illustrates an oscillogram of sensing output signal；
Figure 24 illustrates touch control display apparatus operation in different mode, and controller is operated to the coherent signal of pixel transistor One illustration be intended to；
Figure 25 illustrates a top view of first electrode layer, the second electrode lay and the 3rd electrode layer；
Figure 26 illustrates a section view when touch event occurs according to the touch control display apparatus of one embodiment of the invention Figure；
Figure 27 illustrates a section view when touch event occurs according to the touch control display apparatus of one embodiment of the invention Figure；
Figure 28 (a)~Figure 28 (b) illustrates sense of the touch control display apparatus as shown in Figure 26, Figure 27 for plane touch event The relevant equivalent circuit diagram of survey；
Figure 29 illustrates an oscillogram of sensing output signal；
Figure 30 (a)~Figure 30 (b) illustrates sense of the touch control display apparatus as shown in Figure 26, Figure 27 for pressing touch event The relevant equivalent circuit diagram of survey；
Figure 31 illustrates an oscillogram of sensing output signal；
Figure 32 illustrates touch control display apparatus operation in different mode, controller to the operation of the coherent signal of transistor one Illustrate and be intended to；
Figure 33 illustrates a top view of first electrode layer, the second electrode lay and the 3rd electrode layer.
Symbol description
100、900、1200、1300、1400、1500、1600、1800、1900、2400、2500：Touch control display apparatus
SB1：First substrate layer
SB2：Second substrate layer
EL1：First electrode layer
EL2：The second electrode lay
EL3：Touch control electrode layer
Cp：Electric capacity
d、df：Gap
x、y、z：Axis of orientation
20、30、50、1610、1620：Controller
202：Unit electrode plate
MT：Plain conductor
VH：Connecting hole
DM：Dummy metal wire
X1~Xm, X1 '~Xm '：Carry electrode
XU：Sub- carry electrode
Y1~Yn, Y1 '~Yn '：Receiving electrode
BG：Connection line
DPS：Display pattern signal
TPS：Control mode touch mode signal
502：Transistor
GL：Scan line
DL：Data wire
N1、N2：Node
C：Pixel capacitance
S1：First signal
S2：Secondary signal
91、92、131、132：Glass substrate
93、133：Connector
94、134：Spacer
901、903、905、1301、1309、1311：Insulating barrier
907、1303：Flatness layer
909、1313：Gate insulator
911、1305：Grid layer
913、1307：Source/drain layer
1315：Cushion
1317：Light shield layer
915、1319：Active layer
917、1321：Metal carbonyl conducting layer
919、1323：Pixel electrode layer
902、1302：Black matrix"
904、1304：Colored filter
906、1306：Protective layer
Rtp：Equivalent resistance
Ctp：Equivalent capacity
SW1：First switch
SW2：Second switch
Amp：Amplifier
Cfb：Feedback electric capacity
VDD：Power supply
Vref：Reference voltage
Vout、Vout_xy、Vout_z：Sensing output signal
OB：Object
TH1：First threshold values
TH2：Second threshold values
TH3：3rd threshold values
F：The operating time of one frame
1602、1802、1902、2402、2502：Dielectric layer
1604、1804、1904、2404、2504：Protective glass
1606：Carry electrode
1608：Receiving electrode
Cf、Cr、Cm、Cma、Cmb、Cfa：Electric capacity
Rx1~Rxm, Rxa_1~Rxa_m, Rxb_1~Rxb_m：Receiving electrode bar
Tx1~Txn：Carry electrode bar
NTx、NRx、NTx1、NRx1、NTx2、NRx2：Node
L0、L1、L2：Sensing output signal value
S (Tx1)~S (Txn), S (Rx1)~S (Rxm), S (Rxa_1)~S (Rxa_m), S (Rxb_1)~S (Rxb_m)： Signal
Specific embodiment
Herein, some embodiments of the present invention are carefully described with reference to appended accompanying drawing, but not all embodiment is all There is expression in the example shown.In fact, these inventions can be used various different deformations, and it is not limited to embodiment herein. Relative, the present invention provides these embodiments to meet the legal requirements of application.Identical reference symbol is used for representing in accompanying drawing Same or analogous element.
Fig. 1 illustrates the generalized section according to the touch control display apparatus 100 of one embodiment of the invention.Touch control display apparatus 100 include first substrate layer SB1, second substrate layer SB2, first electrode layer EL1 and the second electrode lay EL2.
First substrate layer SB1 be, for example, thin film transistor (TFT) (Thin-Film Transistor, TFT) substrate, it is central including Multiple pixels and multiple transistors (not being illustrated in this figure).Second substrate layer SB2 is oppositely arranged with first substrate layer SB1.Second Substrate layer SB2 is, for example, but not limited to, color filter glass substrate or transparency carrier.
First electrode layer EL1 is formed on first substrate layer SB1, and between first substrate layer SB1 and second substrate layer Between SB2.The controller (not being illustrated in this figure) that the voltage of first electrode layer EL1 is controllable by touch control display apparatus 100, can In common electrode (common electrode) layer in a controlling cycle selectively as pixel, or it is used to sense touch-control The touch control electrode layer of event.For example, controller can be when touch control display apparatus 100 operate in display pattern to first electrode Layer the first signal of output (such as common voltage), makes first electrode layer EL1 as the common electrode of pixel, and can show dress in touch-control 100 are put when operating in control mode touch mode secondary signal (such as touch-control sensing pulse) is exported to first electrode layer EL1, make first electrode Layer EL1 is used as touch control electrode.
The second electrode lay EL2 is formed on second substrate layer SB2, and between first substrate layer SB1 and second substrate layer Between SB2, electric capacity Cp is formed with first electrode layer EL1.The material of the second electrode lay EL2 can be transparent conductive material or gold Category material.
It is, for example, liquid crystal layer between first electrode layer EL1 and the second electrode lay EL2, it can be used as the dielectric layer of electric capacity Cp. Wherein, between the capacitance size of electric capacity Cp and first and second electrode layer EL1, EL2 gap d and and the second electrode lay EL2 electricity Pole figure sample size is related.
According to embodiments of the invention, the gap d between first and second electrode layer EL1, EL2 can be changed by external force, for example when When finger pressing substrate causes gap d to decline, will cause that the capacitance of electric capacity Cp becomes big, and then controller is sensed than general Plane touch event (for example make the slip in x, y direction in touch surface or touch action) also wants big sensing to export when occurring Signal.When big corresponding sensing when can occur with plane touch event of sensing output signal produced after pressing exports letter Number significant difference, controller will can pick out the pressing touch event that occurred touch event is a longitudinal direction (such as z directions) (for example applying certain power pressing touch control screen), and on-plane surface touch event.Therefore, to the control of touch control display apparatus 100 For device, the sensing output signal that plane touch event is triggered with pressing touch event all belongs to same signalling channel, controller Only need to sensing output signal be compared with multiple threshold values, you can judge whether generation touch event, and identify and sent out Raw touch event is a plane touch event or a pressing touch event.For example, controller can determine whether sensing output letter Number value whether across the first threshold values to detect whether touch event, and can determine whether sense output signal value whether across Second threshold values is a plane touch event or a pressing touch event to differentiate occurred touch event.In this manner, touching Pressure sensor will be not required to set up in control display device with special sensing pressing touch event, and controller is without by exclusive Signalling channel processing the pressure-sensing signal from pressure sensor.
Fig. 2 to Fig. 4 illustrates the upper schematic diagram of the first electrode layer of different implementation aspects.In the example in figure 2, the first electricity Pole layer is realized with self-tolerant (self-capacitive) embedded touch control (in cell) structure.As shown in Fig. 2 first electrode Layer EL1 is patterned into multiple unit electrode plates 202 electrically isolated from one another.Each unit battery lead plate 202 passes through a metal respectively Wire MT is connected to controller 20.Each plain conductor MT is each other independent signal source, therefore controller 20 can be by metal Wire MT carrys out the voltage potential of setup unit battery lead plate 202, makes it as the common electrode or touch control electrode of pixel.When touch-control is aobvious When showing device operates in control mode touch mode, controller 20 can sense the signal from unit electrode plate 202 and become by plain conductor MT Change, and sensing output signal is produced based on the signal intensity for being sensed.By judging the size of sensing output signal, controller 20 Can determine whether touch event, and further differentiate the classification of occurred touch event, such as plane touch event or press Pressure touch event.
Plain conductor MT is for example implemented in two different layers with unit electrode plate 202, and an insulating barrier is spaced between two-layer.Respectively Plain conductor MT can pass through connecting hole VH through insulating barrier to electrically connect with corresponding unit electrode plate 202.In one embodiment, As shown in Fig. 2 each unit battery lead plate 202 is more electrically connected with a plurality of dummy metal wire DM, this little dummy metal wire DM and control Device processed 20 is electrically isolated.Furtherly, dummy metal wire DM breaks equivalent to the metal for being electrically connected to unit electrode plate 202. By setting dummy metal wire DM, it is possible to decrease the resistance of first electrode layer, and make overall resistance more uniform.
Next referring to Fig. 3.In the example in figure 3, first electrode layer is with mutual capacitance type (mutual-capacitive) Embedding touch-control structure is realized.As shown in figure 3, first electrode layer includes a plurality of carry electrode X1~Xm (m is positive integer) and connects Electrode Y1~Yn (n is positive integer) is received, wherein each carry electrode X1~Xm and each receiving electrode Y1~Yn includes multiple figures respectively Case turns to the subelement electrode of rhombus/parallelogram.
Carry electrode X1~Xm is for example generally aligned in the same plane with receiving electrode Y1~Yn but is mutually not connected to.For example, pass The bridge part of setting one of the overlapping of sending electrode X1~Xm and receiving electrode Y1~Yn so that carry electrode X1~Xm (or receive Electrode Y1~Yn) on signal be able to be transmitted across receiving electrode Y1~Yn (or carry electrode X1~Xn).
Controller 30 electrically connects first electrode layer.When touch control display apparatus operate in display pattern, controller 30 can be right Carry electrode X1~Xm and receiving electrode Y1~Yn applies the first signal (such as common electrode signal), makes electrode X1~Xm, Y1 ~Yn as pixel common electrode.When touch control display apparatus operate in control mode touch mode, controller 30 can be according to certain order (example As sequentially) detection signal is sent to carry electrode X1~Xm, and produce sense according to the signal intensity from receiving electrode Y1~Yn Output signal is surveyed, is judged with carrying out follow-up touch event.
Next referring to Fig. 4.In the example in fig. 4, first electrode layer is realized with mutual capacitance type embedded touch control structure.Such as Shown in Fig. 4, first electrode layer includes carry electrode X1 '~Xm ' and receiving electrode Y1 '~Yn '.Carry electrode X1 '~Xm ' with Receiving electrode Y1 '~Yn ' settings interlaced with each other in a plane, and it is connected to controller 40.In this embodiment, receiving electrode Y1 '~Yn ' is set with plurality of rows, and carry electrode X1 '~' Xm are with multiple row spread configuration.Each carry electrode X1~Xm is wrapped respectively Include many sub- carry electrode XU.Many sub- carry electrode XU are to be electrically connected to form a carry electrode by connection line BG.
Similar to previous embodiment, the electrical connection first electrode layer of controller 40.When touch control display apparatus operate in display mould During formula, controller 40 can apply the first signal (such as common electrode to carry electrode X1 '~Xm ' and receiving electrode Y1 '~Yn ' Signal), make it as the common electrode of pixel transistor.When touch control display apparatus operate in control mode touch mode, controller 40 can Detection signal is sent to carry electrode X1 '~Xm ' according to certain order (such as sequentially), and according to from receiving electrode Y1 '~Yn ' Signal intensity produce sensing output signal, judged with carrying out follow-up touch event.
It will be appreciated that the present invention is not illustrated as limit with above-mentioned.First electrode layer can also other pattern/configurations electricity Extremely realize, if first electrode layer can according to the control of controller selectively as the common electrode layer of pixel, or As the touch control electrode layer for being used to sense touch event.
Fig. 5 illustrates touch control display apparatus operation in different mode, and controller is operated to the coherent signal of pixel transistor One illustration be intended to.In this example, touch control display apparatus are for example alternately operated in display pattern and control mode touch mode to reach To touch display function.As shown in figure 5, touch control display apparatus are successively to operate in display pattern in the operating time F of a frame And control mode touch mode.It may be noted that sequential depicted in Fig. 5 is only to help understand the present invention, it is not intended to limit the present invention. In other embodiment, touch control display apparatus can be configured based on arbitrary sequential and be selectively operative in display pattern or touch-control mould Formula.
The signal output of controller 50 can be divided into two parts：One is display pattern signals DP S, and one is control mode touch mode signal TPS.When touch control display apparatus operate in display pattern, transistor 502 is scanned line GL enables and turns on, now controller 50 The display pattern signals DP S of correspondence display data will be exported to node N1 by data wire DL, and to node N2 outputs correspondence altogether With the control mode touch mode signal TPS (hereinafter referred to as the first signal S1) of voltage so that the electric field in pixel capacitance C is able in response to display Mode signal DPS make change, with up to display purpose.Therefore, when touch control display apparatus operate in display pattern, node N1 conducts One pixel electrode, and node N2 is used as community electrode.
When touch control display apparatus operate in control mode touch mode, transistor 502 is scanned line GL forbidden energy and closes, now node N1 in suspension joint state, and controller 50 will export the control mode touch mode signal TPS (hereinafter referred to as the of one or more enables to node N2 Binary signal S2), to carry out touch-control sensing.Therefore, when touch control display apparatus operate in control mode touch mode, node N1 is a suspension joint Battery lead plate, and node N2 is used as a touch control electrode.
Above-mentioned node N2 is located at first electrode layer (first electrode layer EL1 as shown in Figure 1).Apply difference by it Signal, seem the first signal S1 or secondary signal S2, node N2 is using accordingly as the common electrode of pixel, or is used to detect Survey the touch control electrode of touch event.
It is produced when electric capacity can be formed described in brought forward, between first electrode layer and the second electrode lay with effective amplification pressing Sensing output signal.According to the embodiment of the present invention, the second electrode lay can be realized with a variety of electrode patterns.With Fig. 6 extremely As a example by Fig. 8, when the transistor AND gate a plurality of data lines (such as data wire DL of Fig. 5) and scan line in first substrate layer are (such as Fig. 5 Scan line GL) electrically connect, and this little data wire is staggered with scan line, the electrode pattern of the second electrode lay can be with data wire weight Folded or parallel (as shown in Figure 6) or with scan line overlap or parallel (as shown in Figure 7) or simultaneously with data wire and scan line Overlap or parallel to form grid pattern (as shown in Figure 8).
Fig. 9 (a) illustrates the generalized section according to the touch control display apparatus 900 of one embodiment of the invention.For convenience of reason Solution and explanation, element identical or similar to the foregoing embodiment uses same-sign in touch control display apparatus 900.
Touch control display apparatus 900 include first substrate layer SB1, second substrate layer SB2, first electrode layer EL1 and second Electrode layer EL2.First substrate layer SB1 includes substrate 91, insulating barrier 901,903 and 905, flatness layer 907, gate insulator The source/drain of grid (Gate Electrode) layer 911, transistor of (Gate Insulating Layer) 909, transistor (Source/Drain) active layer (Active layer) 915 (such as non-crystalline silicon or oxide semiconductor material of layer 913, transistor Material), metal carbonyl conducting layer 917 and pixel electrode layer 919 (such as indium tin oxide (ITO) electrode).
Touch control display apparatus 900 are that community electrode (first electrode layer EL1) is formed at data wire and pixel electrode layer 919 The structure (Top Common) of top.In one embodiment, the first substrate layer SB1 and first electrode layer EL1 being formed thereon Can be realized based on following manufacture craft：The metal of depositing layers 911 and patterned on glass substrate 91；Depositing grid Pole insulating barrier 909 and active layer 915, and it is patterned with active layer 915；Sedimentary origin/drain electrode layer 913 and pattern dissolve source lead/ Drain conductors/data wire, and partial source/drain layer 913 is electrically connected with active layer 915；(first is blunt for depositing insulating barrier 901 Change layer (passivation layer)) with flatness layer 907 after, be patterned to form connecting hole to source/drain layer 913；Shen Product pixel electrode layer 919 is simultaneously patterned to it, makes it as the pixel electrode of touch control display apparatus 900, and by connecting hole It is electrically connected to source/drain 913 (such as drain electrode end of pixel transistor) of layer；Depositing insulating barrier (the second passivation layer) 903；Depositing metal Conductor layer 917 as transmission common electrode voltage and touching signals to first electrode layer EL1 cabling；Pattern metal wire Layer 917 makes its data line overlap with source/drain layer 913；Depositing insulating barrier 905 (the 3rd passivation layer) simultaneously is patterned to make Make connecting hole on metal carbonyl conducting layer 917；Depositing first electrode layer EL1 and being patterned forms it into slit (slit) to make It is the common electrode and touch control electrode of touch control display apparatus, and by connecting hole (connecting hole VH as shown in Figure 2) connecting To the metal carbonyl conducting layer 917 of lower floor.
Second substrate layer SB2 includes substrate 92, black matrix" (Black Matrix) 902, colored filter (Color Filter) 904 and protective layer (Overcoat) 906.In one embodiment, second substrate layer SB2 and be formed thereon the Two electrode layer EL2 can be realized based on following manufacture craft：Painting black matrix 902 and patterned on glass substrate 92；Apply Cloth R color blockings (R Pigment), B color blockings (B Pigment) and G color blockings (G Pigment) are simultaneously patterned to it respectively；Apply Cloth protective layer 906；Deposition the second electrode lay EL2 (transparent/opaque electrode) is simultaneously patterned；And, coating clearance The photoresist (Photo Spacer) of (Photo Spacer) 94 is simultaneously patterned.The second electrode lay EL2 is between black matrix" Between 902 and first electrode layer EL1, and in the optical obscurations area that black matrix" 902 is formed, to avoid influenceing viewing area Electric Field Distribution and reduce display quality.
Afterwards, by first substrate layer SB1 and second substrate layer SB2 to group, you can first and second electrode layer EL1, EL2 it Between form electric capacity Cp, the capacitance of this electric capacity Cp can change and change with the electrode spacing after pressing.
In one embodiment, touch control display apparatus 900 further include connecting element 93, and it is located at touch control display apparatus 900 Non-display area (such as outside active area (Active Area)), is used to make the second electrode lay EL2 be electrically connected to first substrate Layer SB1.Connecting element 93 can be gold goal (Au ball), anisotropy conductiving glue (Anisotropic Conductive Film, ACF), elargol (Silver glue) or other conductive materials.By connecting element 93, the voltage of the second electrode lay EL2 Can be set.For example, the voltage of the second electrode lay EL2 can be the first signal S1 voltage (such as common electrode voltage), The voltage (such as sensing signal voltage) of secondary signal S2, ground voltage or other specific voltages.Or, touch control display apparatus 900 Connecting element 93 is may not include, now the voltage of the second electrode lay EL2 is in floating.
Fig. 9 (a) lower sections are by the equivalent circuit of metal carbonyl conducting layer 917 plain conductor for being formed and the controller 90 being connected Figure.In this instance, the equivalent resistance of plain conductor is Ctp (that is, gold by Rtp, the equivalent capacity seen along its layout path The electric capacity summation that category wire is formed with other electrode/metal interlevels), and plain conductor is electrically connected with the first conductive layer EL1 Place is more it can be seen that electric capacity Cp.Controller 90 includes first switch SW1, second switch SW2, amplifier Amp and feedback electric capacity Cfb.First switch SW1 and second switch SW2 is alternately to open/close with to electric capacity Ctp and Cp discharge and recharge.Furtherly, One end coupling power vd D of first switch SW1, when first switch SW1 conductings, second switch SW2 will be closed, now power supply VDD will charge to electric capacity Ctp and Cp.Conversely, when second switch SW2 conductings, first switch SW1 will be closed, now tired out Product will export the wherein input to amplifier Amp in the electric charge of electric capacity Ctp and Cp, and another input of amplifier Amp is then For example couple reference voltage Vref.The input of amplifier Amp and the span of output end have feedback electric capacity Cfb, steady with coincident circuit Qualitative and frequency range is considered.Amplifier Amp can produce sensing output signal Vout in response to the signal from plain conductor.In oncontacting When control event occurs, sensing output signal Vout can be expressed as follows：
(formula 1)
Wherein n is the number of times of sense period.
Next referring to Fig. 9 (b), it is illustrated when touch event betides the schematic diagram of touch control display apparatus 900.Such as Fig. 9 Shown in (b), show when object OB (such as finger, stylus or other any objects that can be used to carry out touch control operation) touches touch-control During showing device 900, inductance capacitance Cf can be produced between the first electrode layer EL1 in object OB and touch control display apparatus 900.This When, related equivalent circuit such as Fig. 9 (b) is shown below, and plain conductor more sees inductance capacitance Cf.Therefore, sent out in touch event When raw, sensing output signal Vout can be expressed as follows：
(formula 2)
The wherein capacitance of inductance capacitance Cf and the spacing df between object OB and first electrode layer EL1 is negatively correlated. That is, spacing df is diminished when object OB carries out pressing, the capacitance of inductance capacitance Cf will increase so that sensing output signal Vout becomes big.
In general, when touch event occurs, because object OB is far apart with first electrode layer EL1, object OB institutes The inductance capacitance Cf for causing only about 1pF or so, even if therefore the size of inductance capacitance Cf can produce change with power is pressed, control Device 90 is simultaneously difficult the degree for judging to press power only according to the change of inductance capacitance Cf.According to embodiments of the invention, second The second electrode lay EL2 on the inside of substrate layer SB2 can form relatively large electric capacity between first electrode layer EL1, can set on demand Different size of electric capacity is counted into, and its capacitance can produce significant change with pressing power so that the energy foundation of controller 90 is produced It is plane touch event or pressing touch event that raw sensing output signal Vout tells occurred touch event.
Figure 10 illustrates an oscillogram of sensing output signal Vout.In this instance, it is assumed that the inductance capacitance that object is caused Cf is that 1pF, electric capacity Cp are minimum gap d after 6pF, and pressing between first and second electrode layer EL1, EL2If object OB Touching causes that inductance capacitance Cf becomes big and causes the value for sensing output signal Vout to be changed into 150 from 50 and (sense output signal herein The value of Vout is only the magnitude relationship to expression signal, has no unit), now because sensing output signal Vout value across First threshold values TH1 (for example corresponds to signal value 100), therefore controller can determine whether touch event.
When object OB carries out weight so that gap d is changed into 2/3 times of script, now Cp will be enlarged into 9pF so that sensing is defeated The value for going out signal Vout is changed into 450.This additional signal magnitude (having more 300 signal value) can allow controller further to differentiate Go out one or more touch-control states.As shown in Figure 10, whether controller will determine that the value of sensing output signal Vout across the second valve Value TH2 (it is more than the first threshold values TH1, for example, correspond to signal value 250), is plane touch-control thing to differentiate occurred touch event Part or pressing touch event.That is, when the value of sensing output signal Vout is less than the first threshold values TH1, controller will determine that It is occur without touch event；When the value of sensing output signal Vout is between the first threshold values TH1 and the second threshold values TH2, control Device will be deemed as occurring plane touch event (slip as, the operation such as touch, rather than apply gravity pressing)；It is defeated when sensing Go out the value of signal Vout between across the second threshold values TH2, controller will be deemed as pressing touch event (as applying gravity is pressed Pressure).
It will be appreciated that the parameters value that above-mentioned illustration is mentioned, such as capacitance size, threshold values size and signal value are big It is small, the present invention is all merely to illustrate, it is not intended to limit the present invention.In fact, electric capacity Cp and Cf can have not because of actual circuit structure Together, the size of each threshold values can also be considered and set according to different applications, sensing sensitivity.
Significantly, since above-mentioned illustration is mentioned when object OB carries out weight so that gap d change, now Cp also can Change so that the value of sensing output signal Vout produces change, and controller will be deemed as pressing touch event, therefore object OB In addition to for conductive body, or insulating bodies, controller can determine whether plane touch-control thing by pressing touch event The generation position of part.
Figure 11 illustrates another oscillogram of sensing output signal.Difference with previous embodiment is, in the present embodiment Controller more using one or more the 3rd threshold values TH3 with judge press touch event corresponding to pressure state.As shown in figure 11, Whether controller more judges sensing output signal Vout across the 3rd threshold values (such as correspondence signal value 350).When judged result be it is yes, Controller can determine whether pressing touch event correspondence stress condition.Conversely, when the value of sensing output signal Vout is between the second threshold values Between TH2 and the 3rd threshold values TH3, controller can determine whether that pressing touch event is general pressed state.Understand that the present invention is not limited In this, in other embodiments, controller also using the 3rd more than one threshold values TH3 with will pressing touch event be divided into it is more Pressure state is planted, so that back-end circuit performs corresponding treatment.
Figure 12 illustrates the generalized section according to the touch control display apparatus 1200 of one embodiment of the invention.For convenience of understanding And explanation, element identical or similar to the foregoing embodiment uses same-sign in touch control display apparatus 1200.
Touch control display apparatus 1200 with it is foregoing touch control display apparatus 900 main difference is that, touch control display apparatus 1200 is the structure (Top Pixel) that a pixel electrode layer 919 is formed above common electrode (first electrode layer EL1).As schemed Shown in 12, pixel electrode layer 919 is formed between first electrode layer EL1 and the second electrode lay EL2, and with first substrate layer SB1 In transistor electrical connection.The light transmittance of touch control display apparatus in general can be made using this framework to be improved.Touch-control shows The coherent signal operation of showing device 1200 and touch-control judge similar with previous embodiment, therefore do not repeat separately.
Figure 13 illustrates the generalized section according to the touch control display apparatus 1300 of one embodiment of the invention.For convenience of understanding And explanation, element identical or similar to the foregoing embodiment uses same-sign in touch control display apparatus 1300.
Touch control display apparatus 1300 include first substrate layer SB1, second substrate layer SB2, first electrode layer EL1 and second Electrode layer EL2.First substrate layer SB1 includes substrate 131, insulating barrier 1301, flatness layer 1303, grid layer 1305, source/drain layer 1307th, insulating barrier 1309 and 1311, gate insulator 1313, cushion (Buffer Layer) 1315, light shield layer 1317, material For the active layer 1319 of low temperature polycrystalline silicon (Low Temperature Poly-Silicon, LTPS), metal carbonyl conducting layer 1321 with And pixel electrode layer 1323.Wherein, metal carbonyl conducting layer 1321 as transmission common electrode voltage and touching signals to first electrode The cabling of layer EL1, first electrode layer EL1 is then in response to the signal from metal carbonyl conducting layer 1321 as the common electrode of pixel Or it is used to sense the touch control electrode of touch event.For example, first electrode layer EL1 can pass through, but be not limited to, shown in Fig. 4 Electrode aspect realizes that now the plain conductor of metal carbonyl conducting layer 1321 is, for example, carry electrode X1 '~Xm ' or receiving electrode Y1 '~Yn '.
The second substrate layer SB2 of touch control display apparatus 1300 includes substrate 132, black matrix" 1302, colored filter 1304 and protective layer 1306.The second electrode lay EL2 be formed at second substrate layer SB2 inner side, with first electrode layer EL1 shapes Into electric capacity Cp.
First substrate layer SB1 and second substrate layer SB2 between be, for example, liquid crystal, two substrates layer for example with spacer 134 every Open.In one embodiment, touch control display apparatus 1300 further include connecting element 133, and it is located at the non-of touch control display apparatus 1300 Viewing area, is used to make the second electrode lay EL2 be electrically connected to first substrate layer SB1.By connector 93, the second electrode lay EL2's Voltage can be set to common electrode voltage, sensing signal voltage, ground voltage or other specific voltages.Or, touch-control shows Device 1300 may not include connecting element 133, and now the voltage of the second electrode lay EL2 is in floating.
Because the coherent signal operation of touch control display apparatus 1300 and touch-control judge similar with previous embodiment, therefore do not go to live in the household of one's in-laws on getting married separately State.
Figure 14 illustrates the generalized section according to the touch control display apparatus 1400 of one embodiment of the invention.For convenience of understanding And explanation, element identical or similar to the foregoing embodiment uses same-sign in touch control display apparatus 1400.
Touch control display apparatus 1400 with it is foregoing touch control display apparatus 1300 main difference is that, touch control display apparatus 1300 adopt Top Common structures, and touch control display apparatus 1400 then adopt Top Pixel structures.As shown in figure 14, pixel electrode Layer 1323 is formed in the top of first electrode layer EL1 and is electrically connected to the transistor arrangement of lower section.Touch control display apparatus 1400 Coherent signal is operated and touch-control judges similar with previous embodiment, therefore is not repeated separately.
Figure 15 illustrates the generalized section according to the touch control display apparatus 1500 of one embodiment of the invention.In this embodiment In, the touch control electrode layer EL3 for being responsible for plane touch-control sensing (touch-control in x, y direction is touched) is arranged at second substrate layer above relatively In the opposite side of the second electrode lay EL2.Therefore, the controller of touch control display apparatus 1500 can be based on sensing from touch control electrode layer The signal intensity of EL3 to detect plane touch event, and by sensing the signal intensity from first electrode layer EL1 to detect pressing Touch event (pressing for example in the z-direction).Touch control electrode layer EL3 can realize with various touch-control receiving electrodes, as shown in Figure 3 Capacitive reception electrode.
Figure 16 (a) illustrates the generalized section according to the touch control display apparatus 1600 of one embodiment of the invention.For convenience Understand and illustrate, element identical or similar to the foregoing embodiment uses same-sign in touch control display apparatus 1600.
The second substrate layer SB2 of touch control display apparatus 1600 is further included at it relative to the opposite side of the second electrode lay EL2 3rd electrode layer EL3.(such as optical cement (the Optically Clear of one dielectric layer 1602 are set on the 3rd electrode layer EL3 Adhesive/Resin) layer or air layer), and a protective glass (cover glass) 1604 is set on dielectric layer 1602.The Three electrode layer EL3 can for example as shown in Figure 3 capacitance touching control electrode realize that it is included as carry electrode layer The carry electrode 1606 of (transmitter electrode, Tx), and as receiving electrode layer (receiver Electrode, Rx) receiving electrode 1608.Carry electrode 1606 and receiving electrode 1608 are mainly responsible for detecting plane touch-control Event.
Please also refer to Figure 16 (b) and Figure 16 (c).Figure 16 (b) is illustrated when touch event occurs, touch control display apparatus 1600 generalized section.The relevant equivalent circuit diagram of touch control display apparatus 1600 when Figure 16 (c) touch events occur.
In this instance, controller 1610 connects the 3rd electrode layer EL3, and is mainly responsible for detecting plane touch event, and controls Device processed 1620 connects first electrode layer EL1, and is mainly responsible for detecting pressing touch event.Controller 1610 can for example divide with 1620 Different circuits are not implemented in, or are incorporated into same circuit, hold depending on different designs demand.
For controller 1610, the equivalent resistance of its plain conductor for being connected is Ra, and carry electrode 1606 is formed over the ground Electric capacity Ct, receiving electrode 1608 forms electric capacity Cr over the ground, and the equivalent capacity between receiving electrode 1608 and carry electrode 1606 is Cm.When touch event occurs, that is, object OB touches the side of protective glass 1604, object OB and the 3rd electrode layer EL3 Between can form electric capacity Cf.
The touch control display apparatus 1600 that Figure 16 (c)~Figure 16 (d) illustrates as shown in Figure 16 (a), Figure 16 (b) are whetheing there is touch-control Relevant equivalent circuit diagram under event.NTx and NRx represents the section with receiving electrode layer 1608 positioned at carry electrode layer 1606 respectively Point.Assuming that the voltage of node NTx is V, voltage V is represented by：
V=Vm+Vr (formula 3)
Wherein Vm is the cross-pressure at electric capacity Cm two ends, and Vr is the cross-pressure at electric capacity Cr two ends.
Figure 16 (c) is illustrated when touch event does not occur, the equivalent circuit diagram corresponding to touch control display apparatus 1600.
When touch event does not occur, the cross-pressure Vr at electric capacity Cr two ends is：
(formula 4)
The cross-pressure Vm at electric capacity Cm two ends is：
(formula 5)
Now, the sensing output signal Vout that controller is produced according to the signal of node NRx can be expressed as follows：
(formula 6)
Next referring to Figure 16 (d), it is illustrated when touch event occurs, equivalent corresponding to touch control display apparatus 1600 Circuit diagram.As shown in Figure 16 (d), when plane touch event occurs, the electric capacity formed by touching is will be seen that at node NRx Cf.Now, the cross-pressure Vr at electric capacity Cr two ends is represented by：
(formula 7)
The cross-pressure Vm at electric capacity Cm two ends is：
(formula 8)
The sensing output signal Vout that controller is produced according to the signal of node NRx can be expressed as follows：
(formula 9)
Compared to (formula 6), it is known that because the electric capacity Cf produced by touch event will make sensing output signal Vout diminish.If so When object OB carries out weight, electric capacity Cm will become big so that the value of sensing output signal Vout substantially increases.This additional letter Number size can allow controller further to determine one or more touch-control states.
Controller 1620 can be based on the change of electric capacity Cp to detect pressing touch event.It is worth noting that, in this instance When object OB touches the side of protective glass 1604, capacity effects (such as electric capacity Cf) of the object OB for first electrode layer EL1 will Covered by the mutual tolerance effect (such as electric capacity Cm) of the 3rd electrode layer EL3.Therefore, controller 1620 is in response to produced by touch event Sensing output signal Vout_z be to be expressed as follows：
(formula 10)
When object OB carry out weight so that first substrate layer SB1 and second substrate layer SB2 between Distance Shortened, electric capacity Cp will Can become big so that the value of sensing output signal Vout_z substantially increases.This additional signal magnitude can allow controller 1620 Further determine one or more touch-control states (such as light pressure condition, stress condition etc.).
Figure 17 illustrates an oscillogram of sensing output signal Vout.When touch event does not occur, output signal is sensed The value of Vout is L0, and it is less than the first threshold values TH1.When there is simple plane touch event (not pressing) again, sensing output The value of signal Vout is L1, and it is less than the first threshold values TH1.
In this instance, it is assumed that electric capacity Cp before not pressing is after 6pF, and pressing between first and second electrode layer EL1, EL2 Gap d is minimumWhen object OB carries out weight so that gap d is changed into 2/3 times of script, now Cp will be enlarged into 9pF, compare 3pF is had more in script so that the value of sensing output signal Vout is changed into 200 from 50.This additional signal magnitude (has more 150 Signal value) controller can be allowed to judge there is pressing touch event, so when because sense the value of output signal Vout across First threshold values TH2 (for example corresponds to signal value 150), therefore controller can determine whether plane touch event.Sensing output signal Oscillogram such as Figure 18 of Vout is illustrated.
It will be appreciated that the parameters value that above-mentioned illustration is mentioned, such as capacitance size, threshold values size and signal value are big It is small, the present invention is all merely to illustrate, it is not intended to limit the present invention.In fact, electric capacity Cp and Cf can have not because of actual circuit structure Together, the size of each threshold values can also consider and set according to different applications, sensing sensitivity.
Significantly, since above-mentioned illustration is mentioned when object OB carries out weight so that gap d change, now Cp also can Change so that the value of sensing output signal Vout produces change, and controller will be deemed as pressing touch event, therefore object OB In addition to for conductive body, or insulating bodies, controller can determine whether plane touch-control thing by pressing touch event The generation position of part.
Refer again to Fig. 1.In one embodiment, first electrode layer EL1 is used as receiving electrode layer, and the second electrode lay EL2 is used as carry electrode layer.Carry electrode layer is used to transmit sensing signal detect touch event.Receiving electrode layer is used to carry For signal to controller for its judge touch event whether occur and the species of touch event (such as plane touch event or is pressed Pressure touch event).So the present invention is not limited thereto, in one embodiment, first electrode layer EL1 as a carry electrode layer, and The second electrode lay EL2 is used as receiving electrode layer.In another embodiment, first electrode layer EL1 as a carry electrode layer and One receiving electrode layer, as shown in Figure 3, Figure 4.
Figure 19 illustrates a top view of first electrode layer EL1 and the second electrode lay EL2.In the example of Figure 19, first Electrode layer EL1 and the second electrode lay EL2 is respectively as receiving electrode layer and carry electrode layer.
As shown in figure 19, first electrode layer EL1 be patterned into multiple receiving electrode bar Rx1 electrically isolated from one another~ Rxm.The second electrode lay EL2 is patterned into multiple carry electrode bar Tx1~Txn electrically isolated from one another, and wherein m, n is just whole Number.Receiving electrode bar Rx1~Rxm is set with plurality of rows, and carry electrode bar Tx1~Txn is with multiple row spread configuration.Citing comes Say, receiving electrode bar Rx1~Rxm be arranged in parallel with the data wire in picture element matrix, and Chong Die with light shield layer；And it is located at the second base Carry electrode bar Tx1~Txn and the gate line of picture element matrix of flaggy SB2 sides be arranged in parallel, and Chong Die with light shield layer.
Figure 20 illustrates when touch event occurs according to the touch control display apparatus 1800 of one embodiment of the invention Sectional view.Touch control display apparatus 1800 are similar to the touch control display apparatus 900 using Top common structures.For convenience of understand and Illustrate, element identical or similar to the foregoing embodiment uses same-sign in touch control display apparatus 1800.
One dielectric layer 1802 (such as optical cement layer or air layer) is set on the substrate 92 of touch control display apparatus 1800, and is situated between One protective glass 1804 is set on electric layer 1802.In this instance, the second electrode lay EL2 is used as carry electrode layer, and the first electricity Pole layer EL1 is used as receiving electrode layer.The second electrode lay EL2 forms electric capacity Ct over the ground, and first electrode layer EL1 forms electric capacity over the ground Cr, and electric capacity Cm is formed between first electrode layer EL1 and the second electrode lay EL2.When object OB touches touch control display apparatus 1800 When, electric capacity Cf will be produced between object OB and first electrode layer EL1.
Figure 21 illustrates when touch event occurs according to the touch control display apparatus 1900 of one embodiment of the invention Sectional view.Touch control display apparatus 1900 are similar to the touch control display apparatus 1200 using Top pixel structures.For convenience of understand and Illustrate, element identical or similar to the foregoing embodiment uses same-sign in touch control display apparatus 1900.
One dielectric layer 1902 (such as optical cement layer or air layer) is set on the substrate 92 of touch control display apparatus 1900, and is situated between One protective glass 1904 is set on electric layer 1902.In this instance, the second electrode lay EL2 is used as carry electrode layer, and the first electricity Pole layer EL1 is used as receiving electrode layer.The second electrode lay EL2 forms electric capacity Ct over the ground, and first electrode layer EL1 forms electric capacity over the ground Cr, and electric capacity Cm is formed between first electrode layer EL1 and the second electrode lay EL2.When object OB touches touch control display apparatus 1900 When, inductance capacitance Cf can be produced between object OB and first electrode layer EL1.
Figure 22 (a)~Figure 22 (b) illustrates touch control display apparatus 1800/1900 as shown in Figure 19, Figure 20 in different touch-controls Relevant equivalent circuit diagram under event.NTx is represented positioned at carry electrode layer (corresponding the second electrode lay in this instance respectively with NRx EL2) with the node of receiving electrode layer (corresponding first electrode layer EL1 in this instance).Assuming that the voltage of node NTx is V, the voltage V is represented by：
V=Vm+Vr (formula 11)
Wherein Vm is the cross-pressure at electric capacity Cm two ends, and Vr is the cross-pressure at electric capacity Cr two ends.
Figure 22 (a) is illustrated when touch event does not occur, the equivalent circuit corresponding to touch control display apparatus 1800/1900 Figure.
When touch event does not occur, the cross-pressure Vr at electric capacity Cr two ends is：
(formula 12)
The cross-pressure Vm at electric capacity Cm two ends is：
(formula 13)
Now, the sensing output signal Vout that controller is produced according to the signal of node NRx can be expressed as follows：
(formula 14)
Next referring to Figure 22 (b), it is illustrated when touch event occurs, corresponding to touch control display apparatus 1800/1900 Equivalent circuit diagram.As shown in Figure 22 (b), when plane touch event occurs, will be seen that what is formed by touching at node NRx Electric capacity Cf.Now, the cross-pressure Vr at electric capacity Cr two ends is represented by：
(formula 15)
The cross-pressure Vm at electric capacity Cm two ends is：
(formula 16)
The sensing output signal Vout that controller is produced according to the signal of node NRx can be expressed as follows：
(formula 17)
Compared to (formula 14), it is known that because the electric capacity Cf produced by touch event will make sensing output signal Vout diminish.So If when object OB carries out weight, electric capacity Cm will become big so that the value of sensing output signal Vout substantially increases.This is additional Signal magnitude can allow controller further to determine one or more touch-control states.
As shown in figure 23, when touch event does not occur, the value of sensing output signal Vout is L0, and it is between the first threshold values Between TH1 and the second threshold values TH2.When there is simple plane touch event (not pressing) again, sensing output signal Vout's It is L1 to be worth, and it is less than the first threshold values TH1.When there is pressing touch event, the value of sensing output signal Vout will raise to L2, It is more than the second threshold values TH2.Therefore, controller only need to be by judging sensing output signal Vout and first and second threshold values TH1, TH2 Between magnitude relationship can determine whether touch event, and different touch event types can be distinguished.Figure 24 is painted Show touch control display apparatus operation in different mode, controller is intended to an illustration of the coherent signal operation of transistor.Herein In example, touch control display apparatus for example have first electrode layer EL1 and the second electrode lay EL2 as shown in figure 19, wherein the One electrode layer EL1 include multiple receiving electrode bar Rx1~Rxm, the second electrode lay EL2 include multiple carry electrode bar Tx1~ Txn。
Touch control display apparatus are alternately operated in display pattern and control mode touch mode to reach touch display function.Such as Figure 24 Shown, touch control display apparatus successively operate in display pattern and control mode touch mode in the operating time F of a frame.It may be noted that figure Depicted sequential is only to help understand the present invention in 24, is not intended to limit the present invention.In other embodiments, touch-control shows Device can be configured based on arbitrary sequential and be selectively operative in display pattern or control mode touch mode.
It is transmitted to signal respectively S (the Tx1)~S (Txn) on carry electrode bar Tx1~Txn.In display pattern, letter Number S (Tx1)~S (Txn) is all located at the current potential specified, such as common voltage current potential (level).In control mode touch mode, signal S (Tx1)~S (Txn) sequentially enable.
It is transmitted to signal respectively S (the Rx1)~S (Rxm) on receiving electrode bar Rx1~Rxm.In display pattern, letter Number S (Rx1)~S (Rxm) is all located at the current potential specified, such as common voltage current potential.In control mode touch mode, signal S (Rx1)~S (Rxm) will change in response to signal S (Tx1)~S (Txn).And controller is by the size of basis signal S (Rx1)~S (Rxm) To determine whether touch event, and distinguish different touch event types.
Refer again to Figure 15.In one embodiment, first electrode layer EL1 is used as receiving electrode layer, the second electrode lay EL2 Used as carry electrode layer, and the 3rd electrode layer is used as receiving electrode layer, wherein, first electrode layer EL1 and the second electrode lay EL2 can be used to sense pressing touch event, and the second electrode lay EL2 and the 3rd electrode layer EL3 can be used for sense plane touch-control thing Part.
Embodiment as shown in figure 25, first electrode layer EL1 and the second electrode lay EL2 is respectively as receiving electrode layer and biography Sending electrode layer, can be used to sense pressing touch event, and the 3rd electrode layer EL3 is used as receiving electrode layer, itself and the second electrode lay EL2 can be used for sense plane touch event.
In this instance, first electrode layer EL1 be patterned into multiple receiving electrode bar Rxb_1 electrically isolated from one another~ Rxb_m；The second electrode lay EL2 is patterned into multiple carry electrode bar Tx1~Txn electrically isolated from one another；3rd electrode layer EL3 is patterned into multiple receiving electrode bar Rxa_1~Rxa_m electrically isolated from one another, and wherein m, n is positive integer.Receive electricity Pole bar Rxa_1~Rxa_m, Rxb_1~Rxb_m is set with plurality of rows, and carry electrode bar Tx1~Txn is set with multiple row arrangement Put.For example, the data wire in receiving electrode bar Rxa_1~Rxa_m, Rxb_1~Rxb_m and picture element matrix be arranged in parallel, And it is Chong Die with light shield layer；It is and carry electrode bar Tx1~Txn be arranged in parallel with the gate line of picture element matrix and Chong Die with light shield layer.
Figure 26 illustrates when touch event occurs according to the touch control display apparatus 2400 of one embodiment of the invention Sectional view.Touch control display apparatus 2400 are similar to the touch control display apparatus 900 using Top common structures.For convenience of understand and Illustrate, element identical or similar to the foregoing embodiment uses same-sign in touch control display apparatus 2400.
One the 3rd electrode layer EL3 is set on the substrate 92 of touch control display apparatus 2400, one is set on the 3rd electrode layer EL3 and is situated between Electric layer 2402 (such as optical cement layer or air layer), and a protective glass 2404 is set on dielectric layer 2402.In this instance, One electrode layer EL1 and the second electrode lay EL2 can be used to sense pressing touch-control thing respectively as receiving electrode layer and carry electrode layer Part, and the 3rd electrode layer EL3 as receiving electrode layer, it can be used for sense plane touch event with the second electrode lay EL2.
The second electrode lay EL2 forms electric capacity Ct over the ground, and first electrode layer EL1 forms electric capacity Cr, the 3rd electrode layer EL3 over the ground Electric capacity Cma is formed between the second electrode lay EL2, and electric capacity Cmb is formed between first electrode layer EL1 and the second electrode lay EL2. When object OB touches touch control display apparatus 2400, between the 3rd electrode layer EL3 in object OB and touch control display apparatus 2400 Electric capacity Cfa can be produced.
Figure 27 illustrates when touch event occurs according to the touch control display apparatus 2500 of one embodiment of the invention Sectional view.Touch control display apparatus 2500 are similar to the touch control display apparatus 1200 using Top pixel structures.For convenience of understand and Illustrate, element identical or similar to the foregoing embodiment uses same-sign in touch control display apparatus 2500.
One the 3rd electrode layer EL3 is set on the substrate 92 of touch control display apparatus 2500, one is set on the 3rd electrode layer EL3 and is situated between Electric layer 2502 (such as optical cement layer or air layer), and a protective glass 2504 is set on dielectric layer 2502.In this instance, One electrode layer EL1 and the second electrode lay EL2 can be used to sense pressing touch-control thing respectively as receiving electrode layer and carry electrode layer Part, and the 3rd electrode layer EL3 as receiving electrode layer, it can be used for sense plane touch event with the second electrode lay EL2.Second Electrode layer EL2 forms electric capacity Ct over the ground, and first electrode layer EL1 forms electric capacity Cr over the ground, and first electrode layer EL1 and second electrode Electric capacity Cmb is formed between layer EL2.When object OB touches touch control display apparatus 2500, object OB and touch control display apparatus 2500 In the 3rd electrode layer EL3 between can produce electric capacity Cfa.
The touch control display apparatus 2400/2500 that Figure 28 (a)~Figure 28 (b) illustrates as shown in Figure 26, Figure 27 are touched for plane The relevant equivalent circuit diagram of the sensing of control event.NTx1 is represented positioned at carry electrode layer (in this instance corresponding the respectively with NRx1 Two electrode layer EL2) with receiving electrode layer (corresponding 3rd electrode layer EL3 in this instance) node.Assuming that in the electricity of node NTx1 It is V to press, and voltage V is represented by：
V=Vm+Vr (formula 18)
Wherein Vm is the cross-pressure at electric capacity Cma two ends, and Vr is the cross-pressure at electric capacity Cr two ends.
Figure 28 (a) is illustrated when touch event does not occur, and touch control display apparatus 2400/2500 are for plane touch event The equivalent circuit diagram of sensing.
When touch event does not occur, the cross-pressure Vr at electric capacity Cr two ends is：
(formula 19)
The cross-pressure Vm at electric capacity Cma two ends is：
(formula 20)
Now, the sensing output signal Vout that controller is produced according to the signal of node NRx1 can be expressed as follows：
(formula 21)
Next referring to Figure 28 (b), it is illustrated when plane touch event occurs, the institute of touch control display apparatus 2400/2500 Corresponding equivalent circuit diagram.As shown in Figure 28 (b), when plane touch event occurs, node NRx1 will be seen that the shape because of touching Into electric capacity Cfa.Now, voltage Vr is represented by：
(formula 22)
The cross-pressure Vm at electric capacity Cm two ends is：
(formula 23)
The sensing output signal Vout that controller is produced according to the signal of node NRx1 can be expressed as follows：
(formula 24)
Compared to (formula 21), it is known that because the electric capacity Cfa produced by plane touch event will become sensing output signal Vout It is small.As shown in figure 29, when there is no touch event, corresponding sensing output signal Vout is located at more than the first threshold values TH1 Current potential L1.When there is plane touch event, corresponding sensing output signal Vout is located at the current potential less than the first threshold values TH1 L2。
The touch control display apparatus 2400/2500 that Figure 30 (a)~Figure 30 (b) illustrates as shown in Figure 26, Figure 27 are touched for pressing The relevant equivalent circuit diagram of the sensing of control event.NTx2 is represented positioned at carry electrode layer (corresponding second in this example respectively with NRx2 Electrode layer EL2) with receiving electrode layer (corresponding first electrode layer EL1 in this example) node.Assuming that the voltage in node NTx2 is V, voltage V is represented by：
V=Vm+Vr (formula 25)
Wherein Vm is the cross-pressure at electric capacity Cmb two ends, and Vr is the cross-pressure at electric capacity Cr two ends.
Figure 30 (a) is illustrated when touch event does not occur, and touch control display apparatus 2400/2500 are for pressing touch event The equivalent circuit diagram of sensing.
When pressing touch event does not occur, the cross-pressure Vr at electric capacity Cr two ends is：
(formula 26)
The cross-pressure Vm at electric capacity Cmb two ends is：
(formula 27)
Now, the sensing output signal Vout that controller is produced according to the signal of node NRx2 can be expressed as follows：
(formula 28)
Next referring to Figure 30 (b), it is illustrated when touch event generation is pressed, the institute of touch control display apparatus 2400/2500 Corresponding equivalent circuit diagram.As shown in Figure 30 (b), when touch event generation is pressed, electric capacity Cmb will become greatly Cmb ', therefore electric Pressure Vr is represented by：
(formula 29)
The cross-pressure Vm at electric capacity Cm two ends is：
(formula 30)
The sensing output signal Vout that controller is produced according to the signal of node NRx2 can be expressed as follows：
(formula 31)
Compared to (formula 28), it is known that because pressing touch event will make sensing output signal Vout become big.As shown in figure 31, when During generation touch event, corresponding sensing output signal Vout is located at the current potential L1 less than the first threshold values TH1.When pressing During touch event, corresponding sensing output signal Vout is located at the current potential L2 more than the first threshold values TH1.
Figure 32 illustrates touch control display apparatus operation in different mode, and controller is operated to the coherent signal of pixel transistor One illustration be intended to.In this example, touch control display apparatus for example have first electrode layer EL1, the second electricity as of fig. 24 Layer EL2 and the 3rd electrode layer EL3, wherein first electrode layer EL1 include multiple receiving electrode bar Rxb_1~Rxb_m, second for pole Electrode layer EL2 include multiple carry electrode bar Tx1~Txn, the 3rd electrode layer EL3 include multiple receiving electrode article Rxa_1~ Rxa_m。
Touch control display apparatus are alternately operated in display pattern and control mode touch mode to reach touch display function.Such as Figure 32 Shown, touch control display apparatus successively operate in display pattern and control mode touch mode in the operating time F of a frame.It may be noted that figure Depicted sequential is only to help understand the present invention in 32, is not intended to limit the present invention.In other embodiments, touch-control shows Device can be configured based on arbitrary sequential and be selectively operative in display pattern or control mode touch mode.
It is transmitted to signal respectively S (the Tx1)~S (Txn) on carry electrode bar Tx1~Txn.In display pattern, letter Number S (Tx1)~S (Txn) is all located at the current potential specified, such as common voltage current potential.In control mode touch mode, signal S (Tx1)~S (Txn) sequentially enable.
It is transmitted to signal respectively S (the Rxa_1)~S (Rxa_m) on receiving electrode bar Rxa_1~Rxa_m.In display mould During formula, signal S (Rxa_1)~S (Rxa_m) is all located at the current potential specified, such as common voltage current potential.In control mode touch mode, letter Number S (Rxa_1)~S (Rxa_m) will change in response to signal S (Tx1)~S (Txn).And controller is by basis signal S (Rxa_ 1) size of~S (Rxa_m) come determine whether occur plane touch event.
Similarly, it is transmitted to signal respectively S (the Rxb_1)~S (Rxb_m) on receiving electrode bar Rxb_1~Rxb_m. In display pattern, signal S (Rxb_1)~S (Rxb_m) is all located at the current potential specified, such as common voltage current potential.In touch-control mould During formula, signal S (Rxb_1)~S (Rxb_m) will change in response to signal S (Tx1)~S (Txn).And controller will be according to letter The size of number S (Rxb_1)~S (Rxb_m) determines whether pressing touch event.
Figure 33 illustrates a top view of first electrode layer EL1, the second electrode lay EL2 and the 3rd electrode layer EL3.In Figure 33 Example in, first electrode layer EL1 and the second electrode lay EL2 can be used to feel respectively as receiving electrode layer and carry electrode layer Pressing touch event, and the 3rd electrode layer EL3 are surveyed as receiving electrode layer, it can be used for sense plane with the second electrode lay EL2 Touch event.It is embodiment with Figure 25 main difference is that, in this example first electrode layer EL1 be a complete plane, Er Feitu Case is melted into strip.
In sum, the touch control display apparatus that the present invention is provided can be by the second substrate layer in contact panel (such as colour Filter sheet base plate or transparency carrier) inner side laying one layer of electrode with first substrate layer (such as pixel thin film transistor substrate) on The electric capacity of formation one of electrode so that the produced sensing output signal after being pressed of touch control display apparatus can be remarkably reinforced.Such as This one, controller only need to by judge sensing output signal size can to tell occurred touch event be a plane Touch event or a pressing touch event.This framework can not only save for pressure-sensing function additional pressure sensor Demand, the quality of coherent signal can be more lifted, to improve overall touch-control and display performance.
Although disclosing the present invention with reference to above preferred embodiment, but it is not limited to the present invention.The present invention Skilled person in art, without departing from the spirit and scope of the present invention, can be used for a variety of modifications and variations. Therefore, protection scope of the present invention should be by being defined that the claim enclosed is defined.

Claims (20)

1. a kind of touch control display apparatus, including：
First substrate layer, including multiple pixels and multiple transistors；
Second substrate layer, is oppositely arranged with first substrate layer；
First electrode layer, is formed on first substrate layer, and between first substrate layer and second substrate layer；
The second electrode lay, is formed on second substrate layer, and between first substrate layer and second substrate layer, with An electric capacity is formed with the first electrode layer；And
Controller, electrically connects the first electrode layer, to when the touch control display apparatus operate in a display pattern to this first Electrode layer exports one first signal, makes the first electrode layer as the community electrode layer of those pixels, and show in the touch-control Device exports a secondary signal when operating in a control mode touch mode to the first electrode layer, makes the first electrode layer as touch-control electricity Pole layer；
Wherein when the touch control display apparatus operate in the control mode touch mode, the controller is based on the electric capacity and produces a sensing output letter Number, and judge whether whether the value of the sensing output signal occur a touch event across one first threshold values to detect, the control Device more judges whether the value of the sensing output signal to differentiate the touch event for occurring is a plane across one second threshold values Touch event or a pressing touch event.
2. touch control display apparatus as claimed in claim 1, wherein second threshold values are higher than first threshold values.
3. touch control display apparatus as claimed in claim 1, the wherein controller are more using one or more the 3rd threshold values judging Pressure state corresponding to the pressing touch event.
4. touch control display apparatus as claimed in claim 1, the wherein second substrate layer include a black matrix", the second electrode Layer is between the black matrix" and the first electrode layer, and in the optical obscurations area that the black matrix" is formed.
5. touch control display apparatus as claimed in claim 1, wherein those transistor AND gate a plurality of data lines and multi-strip scanning line Electrically connect, and those data wires are staggered with those scan lines；
The wherein electrode pattern of the second electrode lay and those data line overlaps or parallel.
6. touch control display apparatus as claimed in claim 1, wherein those transistor AND gate a plurality of data lines and multi-strip scanning line Electrically connect, and those data wires are staggered with those scan lines；
Wherein the electrode pattern of the second electrode lay and those scanning line overlap or parallel.
7. touch control display apparatus as claimed in claim 1, wherein those transistor AND gate a plurality of data lines and multi-strip scanning line Electrically connect, and those data wires are staggered with those scan lines；
The wherein electrode pattern of the second electrode lay and those data wires and those scanning line overlaps or parallel.
8. touch control display apparatus as claimed in claim 1, also include：
Connecting element, positioned at a non-display area of the touch control display apparatus, be used to make the second electrode lay be electrically connected to this first Substrate layer.
9. touch control display apparatus as claimed in claim 1, the voltage of the wherein the second electrode lay is community electrode voltage, one Ground voltage or in a floating.
10. touch control display apparatus as claimed in claim 1, the wherein first electrode layer include multiple lists electrically isolated from one another First battery lead plate, respectively the unit electrode plate controller is connected to by a plain conductor respectively.
11. touch control display apparatus as claimed in claim 10, wherein the respectively unit electrode plate and a plurality of dummy metal wire electricity Connection, those dummy metal wires are electrically isolated with the controller.
12. touch control display apparatus as claimed in claim 1, the wherein first electrode layer include a plurality of carry electrode and a plurality of Receiving electrode, those carry electrodes and the setting interlaced with each other in a plane of those receiving electrodes, and it is connected to the controller.
13. touch control display apparatus as claimed in claim 1, also include：
Touch control electrode layer, is arranged at the opposite side relative to the second electrode lay on second substrate layer；
Wherein the controller is based on the touch-control sensing output signal from the touch control electrode layer to detect the plane touch event.
14. touch control display apparatus as claimed in claim 1, also include：
Pixel electrode layer, is formed in first substrate layer, and electrically connected with those transistors.
15. touch control display apparatus as claimed in claim 1, also include：
Pixel electrode layer, is formed between the first electrode layer and the second electrode lay, the pixel electrode layer and the first substrate Those pixel transistors electrical connection in layer.
16. touch control display apparatus as claimed in claim 1, the wherein second substrate layer include a colored filter.
17. touch control display apparatus as claimed in claim 1, the wherein first electrode layer are used as carry electrode layer (transmitter electrode, Tx) and a receiving electrode layer (receiver electrode, Rx).
, used as carry electrode layer, this second for 18. touch control display apparatus as claimed in claim 1, the wherein first electrode layer Electrode layer is used as receiving electrode layer.
, used as receiving electrode layer, this second for 19. touch control display apparatus as claimed in claim 1, the wherein first electrode layer Electrode layer is used as carry electrode layer.
20. touch control display apparatus as claimed in claim 1, the wherein touch control electrode layer are used as a self-tolerant touch-control structure.
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