CN108874199A - Embedded touch display device and communication method thereof with active pen - Google Patents
Embedded touch display device and communication method thereof with active pen Download PDFInfo
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- CN108874199A CN108874199A CN201810127988.6A CN201810127988A CN108874199A CN 108874199 A CN108874199 A CN 108874199A CN 201810127988 A CN201810127988 A CN 201810127988A CN 108874199 A CN108874199 A CN 108874199A
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- 238000000034 method Methods 0.000 title claims abstract description 32
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 claims description 2
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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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Abstract
The invention discloses an embedded touch display device and a communication method with an active pen, wherein the embedded touch display device comprises a plurality of common electrodes, and the communication method is that in an image display period, the common electrodes transmit an uplink signal to communicate with the active pen; thus, the embedded display device can support the active pen touch function.
Description
Technical field
The present invention relates to the communication methods more particularly to a kind of display of embedded touch of a kind of display device and active pen to fill
It sets and its communication method with active pen.
Background technique
Active style of writing control function display is supported at present to be mostly external hanging type (Out-cell) touch control display apparatus or set
Top formula (On-cell) touch control display apparatus, wherein a display panel of external hanging type or top-type touch control display apparatus is additional shape
At there is multiple induction electrodes, i.e., as shown in figure 9, including a display panel 41 for the external hanging type touch control display apparatus 40, this is aobvious
Show that 41 outer surface of panel is equipped with a touch panel 42.The display panel 41 is electrically connected with scan driver 411 and a data are driven
Dynamic device 412, to drive the display panel 41 to show image, and in addition the touch panel 42 is then electrically connected with a touching controller
421, to drive multiple induction electrode (not shown) on the touch panel 423 operation that senses finger or active pen.
As electronic product is towards the trend of lightening design, touch control display apparatus is gradually shown with embedded touch at present
Touch-control in panel (In-cell) and display driving integrate (Touch and Display Driver Integration,
TDDI the touching for) being used as main product, however using touch-control and display that the display panel of integration technology is driven although to be able to achieve finger
Function is controlled, but upper in the finger touching detection application parallel with active pen, especially between touch control display apparatus and active pen
Communication way still further seeks improved technical solution.
Summary of the invention
In view of between above-mentioned In-cell touch display panel and active pen the problem of communication way, main inventive of the present invention
It is designed to provide a kind of embedded touch display device that can support active style of writing function and embedded touch display dress
Set the communication method with active pen.
Technical way used in above-mentioned purpose to be reached is the ditch for enabling the embedded touch display device and active pen
Circulation method includes：Within an image display cycle, emit a uplink by multiple common electrodes of the embedded touch display device
Signal, to carry out signal communicating with an active pen.
Since the embedded touch display device is not additionally formed the induction electrode of touch-control, the embedded touching of the invention
Control display device 10 is directly by being used as display purposes and touching the common electrode C of detection applications1~CKTo emit uplink signal
PUL；In this way, when active pen 30 is close to the embedded touch display device 10, uplink signal P ready to receiveUL, into interior with this
Embedded touch control display apparatus 10 carry out signal communicating, make the embedded touch display device 10 detect the active pen 30 position and
Complete interactive operation between the two.
Technical way used in above-mentioned purpose to be reached is to enable the embedded touch display device include：It is multiple aobvious
Show pixel, multiple common electrodes, an image driving unit and a touch-control sensing unit；Wherein：Multiple display pixel is electrically connected to
The image driving unit, and respectively the common electrode is the multiple of corresponding multiple display pixel, and is electrically connected with the touch-control sensing unit
Connect, the touch-control sensing unit again with and the image driving unit be electrically connected, within an image display cycle, the touch-control sensing unit
Emit the uplink signal via at least part of multiple common electrode, to carry out signal communicating with an active pen.
Since the embedded touch display device is not additionally formed with the induction electrode of touch-control, this of the invention is embedded
Touch control display apparatus 10 is directly by being used as display purposes and touching the common electrode C of detection applications1~CKTo emit uplink letter
Number PUL；In this way, when active pen 30 is close to the embedded touch display device 10, uplink signal P ready to receiveUL, into this
Embedded touch display device 10 carries out signal communicating, and the embedded touch display device 10 is made to detect the position of the active pen 30
And complete interactive operation between the two.
Below in conjunction with the drawings and specific embodiments, the present invention will be described in detail, but not as a limitation of the invention.
Detailed description of the invention
Fig. 1：The system architecture schematic diagram of an embedded touch display device of the invention；
Fig. 2A：The structural representation of multiple display pixels and multiple common electrodes in an embedded touch display device of the invention
Figure；
Fig. 2 B：Fig. 2A wherein circuit diagram of the corresponding multiple thin film transistor (TFT)s of a common electrode and a sensing circuit；
Fig. 3 A：The schematic diagram of the present invention multiple common electrodes and active pen；
Fig. 3 B：The circuit diagram of a sensing unit of the invention；
Fig. 3 C：The circuit diagram of another sensing unit of the present invention；
Fig. 4 A：The cycle time figure of the communication method of first preferred embodiment of the invention；
Fig. 4 B：The cycle time figure of the communication method of second preferred embodiment of the invention；
Fig. 4 C：Another cycle time of the communication method of Fig. 4 B schemes；
Fig. 5 A：The cycle time of the communication method of third preferred embodiment of the present invention schemes；
Fig. 5 B：The cycle time figure of the communication method of 4th preferred embodiment of the invention；
Fig. 6 A：The cycle time figure of the communication method of 5th preferred embodiment of the invention；
Fig. 6 B：The cycle time figure of the communication method of 6th preferred embodiment of the invention；
Fig. 7 A：A signal timing diagram of corresponding diagram 4A；
Fig. 7 B：A signal timing diagram of corresponding diagram 5A；
Fig. 7 C：A signal timing diagram of corresponding diagram 6A；
Fig. 8 A：A signal timing diagram of corresponding diagram 4B；
Fig. 8 B：The voltage change schematic diagram of a display pixel of corresponding diagram 4B；
Fig. 9：The system architecture schematic diagram of existing external hanging type touch control display apparatus.
Wherein, appended drawing reference
10 embedded touch display device, 11 display panel
111 common electrode layer, 112 pixel electrode
12 image driving unit, 121 drive element of the grid
122 data drive unit, 20 touch-control sensing unit
21 controller, 22 sensing circuit
221, which receive 222 uplink signal of circuit, generates unit
30 active pen, 31 Transmit-Receive Unit
40 external hanging type touch control display apparatus, 41 1 display panel
411 scanner driver, 412 data driver
42 touch panels 421 touch controller
Specific embodiment
The present invention be directed to an embedded touch display devices to be improved, and support actively touch function is made it have,
Cooperate the technology contents of multiple examples and drawings detailed description this cases below.
Referring initially to shown in Fig. 1, embedded touch display device 10 of the invention mainly include a display panel 11,
One image driving unit 12 and a touch-control sensing unit 20；Wherein the image driving unit 12 includes a drive element of the grid
121 and a data drive unit 122；The drive element of the grid 121, the data drive unit 122 and the touch-control sensing unit 20
It is electrically connected to the display panel 11.
Please refer to shown in Fig. 1,2A and 2B, the display panel 11 of the touch control display apparatus 10 mainly includes multiple
Gate lines G1~Gm, multiple data line D1~Dn, multiple pixel electrodes 112, multiple thin film transistor (TFT) Q11~Q1n、Q21~Q2n…、
Qm1~Qmn, multiple signal wire L1~LKAn and common electrode layer 111；Wherein multiple gate lines G1~GmIt is electrically connected to the grid
Pole driving unit 121, multiple data line D1~DnIt is electrically connected to the data drive unit 122.Also, multiple gate lines G1
~GmAnd multiple data line D1~DnIntersect multiple pixel regions arranged in arrays out with being electrically insulated from, then cooperates Fig. 2 B
It is shown, the respectively pixel electrode 112 and respectively thin film transistor (TFT) Q11…、QmnIt is set to the corresponding pixel region, and respectively this is thin
Film transistor Q11…、QmnGrid, source electrode and drain electrode be sequentially electrically connected in the grid line of the corresponding pixel region
G1~Gm, data line D1~DnAnd pixel electrode 112, to constitute a display pixel P11~P1n、P21~P2n…、Pm1~Pmn。
Also, the common electrode layer 111 is arranged in parallel with being electrically insulated with multiple pixel electrodes 112.In this present embodiment, touch-control display dress
10 are set when imaging, which is sequentially driven a plurality of gate lines G1~Gm, make to be connected to driven grid line
G1~GmThin film transistor (TFT) Q11~Q1n、Q21~Q2n…、Qm1~QmnIt is switched on, the thin film transistor (TFT) Q of the conducting11~Q1n、Q21
~Q2n…、Qm1~QmnThe data line D connected again by it1~Dn, by the data drive unit 122 output to data line D1
~DnDisplay signal Vd1~VdnIt is applied to its pixel electrode 112, to determine the thin film transistor (TFT) Q of the conducting11~Q1n、Q21~
Q2n…、Qm1~QmnThe grayscale or color of the pixel electrode 112 connected, and then show image.
In this present embodiment, as shown in Figure 3A, which includes multiple common electrode C arranged in arrays1~CK,
Multiple common electrode C1~CKPass through corresponding signal wire L respectively1~LKIt is electrically connected to the touch-control sensing unit 20；For another example scheme
Shown in 2A, each common electrode C1~CKCorresponding h display pixel, wherein h is positive integer and is greater than 1.This reality for convenience of description below
A technology contents are applied, with a common electrode C shown in Fig. 2 B1For, common electrode C1Corresponding nine pixel electrode P11~P33, i.e. h
=9；Only, actually the quantity of pixel electrode corresponding to the common electrode of the present embodiment depends on required touch-control resolution ratio decision.
Preferably, the size of each common electrode of the present embodiment is the single induction electrode size of corresponding general independent touch panel.
Again as shown in Figure 1, the touch-control sensing unit 20 includes a controller 21 and multiple sensing circuits 22；Wherein, should
With the data drive unit 122 and respectively, the sensing circuit 22 is electrically connected controller 21, and multiple sensing circuit 22 passes through respectively
Signal wire L1~LKIt is connected to corresponding common electrode C1~CK.Again please refer to Fig. 4 A, Fig. 4 B, Fig. 5 A, Fig. 5 B, Fig. 6 A
And shown in Fig. 6 B, the present invention is passed through in the preset image display cycle of display panel 11 by the touch-control sensing unit 20
Multiple common electrode C1~CKEmit a uplink signal PUL, i.e., as shown in Figure 3A, make close to the embedded touch display device 10
An active pen 30 can further receive uplink signal PUL.When the Transmit-Receive Unit 31 of the active pen 30 receives uplink letter
Number PULAnd after successful matching, a downlink signal P can be emittedDLGive the embedded touch display device 10；At this point, again by the touch-control
Sensing unit 20 passes through multiple common electrode C1~CKReceive downlink signal PUL, complete the signal ditch between the active pen 30
Logical and position detection.In this present embodiment, uplink signal PULMay include identification information, synchronizing information (such as：Beacon letter
Breath), the information of encoded information etc. and the active pen 30 pairing.
In transmission uplink signal PULFirst embodiment in, uplink signal PULComprising by numerical value " 1 " and " 0 " institute's structure
At information, but pattern is not implemented with this and is limited.Therefore, pass through multiple common electrode C1~CKEmit uplink signal PULSide
Formula, can be via the multiple common electrode C of change1~CKVoltage quasi position variation, as uplink signal PULThe synchronizing information included.
For example, please refer to shown in Fig. 7 A, as multiple common electrode C1~CKVoltage quasi position be it is high when, represent numerical value " 1 ",
Multiple common electrode C1~CKVoltage quasi position be it is low when, then represent numerical value " 0 "；Vice versa.Specifically, as shown in Figure 3B,
Change multiple common electrode C for one of which1~CKThe practice of voltage quasi position, herein with one first common electrode C1And its it is corresponding
It is illustrated for sensing circuit 22；The sensing circuit 22 includes a multiplexer MUX, a reception circuit 221 and one first
Switch S1, multiplexer MUX is electrically connected to a first voltage source VH, a second voltage source VLWith first common electrode C1Between, it should
It receives circuit 221 and passes through first switch S1It is electrically connected to first common electrode C1, multiplexer MUX and first switch S1Connect
Connect the controller 21, and the actuation opened, disconnected by the controller 21 control.If being intended to control first common electrode C1Voltage it is quasi-
Position emits uplink signal PULWhen, which enables first switch S1Disconnect, make the sensing circuit 22 not with this first
Common electrode C1Electrical connection, at this time again according to uplink signal PULData composition (numerical value " 1 " and " 0 " composition), via the control
Device 21 controls multiplexer MUX switching；When control multiplexer MUX switches to first voltage source VHWhen, first voltage source VH
With first common electrode C1Electrical connection, due to first voltage source VHVoltage quasi position compared with a second voltage source VLVoltage quasi position
Height, therefore first common electrode C can be made1Voltage VC1Level rises, i.e., as shown in Figure 7 A, and is in high voltage level, to correspond to number
Value " 1 "；Again when control multiplexer MUX switches to the second voltage source VL, then first common electrode C1Voltage VC1Level meeting
Decline, and it is in low voltage level, represent numerical value " 0 "；In this way, the controller 21 can be more via this of each sensing circuit 22 of control
Work device MUX and first switch S1, enable multiple common electrode C1~CKSimultaneously according to uplink signal PULData form so that change it
Voltage quasi position, and uplink signal P is smoothly providedULIt is received for the active pen 30.In addition, the present embodiment can allow on demand all or
The common electrode C of partial amt1~CKExecute uplink signal PULTransmission program, such as can only allow singular row or even number line
The common electrode execute aforementioned uplink signal PULTransmission program, to achieve the purpose that power saving.
It please refers to shown in Fig. 3 C, equally with first common electrode C1And its for sensing circuit 22 ', to illustrate to transmit on this
Row signal PULSecond embodiment.Wherein, which includes that a uplink signal generates unit 222, a second switch
S2, one receive circuit 221 and a first switch S1；Wherein uplink signal generation unit 222 passes through second switch S2Electrical connection
To first common electrode C1, and the reception circuit 221 passes through first switch S1It is electrically connected to first common electrode C1, this first
And second switch S1、S2It is all connected with the controller 21, and the actuation opened, disconnected by the controller 21 control.If be intended to control this
One common electrode C1Voltage quasi position emit uplink signal PULWhen, which enables first switch S1It disconnects, makes the sense
Slowdown monitoring circuit 22 not with first common electrode C1Electrical connection, it includes insighted for controlling the uplink signal again at this time to generate unit 222 and generate
The voltage signal V of the active synchronizing information such as other information, synchronizing information, encoded informationUL；At the same time, the controller 21 is also
Control second switch S2It opens；As control second switch S2When unlatching, voltage signal VULIt exports to first common-battery
Pole C1, i.e., by voltage signal VULVoltage quasi position variation, make first common electrode C1Corresponding uplink letter is smoothly provided
Number PULIt is received for the active pen 30.
Multiple common electrode C is taken off before progress explanation below1~CKEmit uplink signal PULTime, referring initially to figure
Shown in 4A, for one of image display cycle of the embedded touch display device 10, if for display frequency is 60Hz, it should
Image display cycle time is about 16.67ms.The image display cycle of this implementation pattern include an execution time section (about
13.67ms) and a vertical blanking time section VBI (about 3ms)；In this present embodiment, the vertical blanking time section VBI is adjacent
In the execution time section, which includes single display period d.In the execution time section, such as Fig. 1
And shown in Fig. 2 B, by drive element of the grid 121 and the data drive unit 122 of the image driving unit 12 according to input shadow
As information, the respectively thin film transistor (TFT) Q of the display panel 11 is driven11~Q1n、Q21~Q2n…、Qm1~Qmn, to enable the respectively display
Pixel P11~P1n、P21~P2n…、Pm1~PmnImaging；And in vertical blanking time section VBI, the drive element of the grid
121 no longer drive respectively thin film transistor (TFT) Q11~Q1n、Q21~Q2n…、Qm1~Qmn, therefore respectively display pixel P11~P1n、P21~
P2n…、Pm1~PmnIt is maintained its pressure difference between the corresponding common electrode, that is, maintains the display image of script；Therefore,
Cooperate shown in Fig. 7 A again, it can be in vertical blanking time section VBI, by multiple common electrode C1~CKEmit the uplink signal
PULIt is received for the active pen 30, without influencing respectively display pixel P11~P1n、P21~P2n…、Pm1~PmnImage show.Again
As shown in Figure 3A, when by multiple common electrode C1~CKUplink signal P is emittedULAfterwards, in vertical blanking time section VBI
It is interior then through multiple common electrode C1~CKReceive the downlink signal P sent by the active pen 30DL。
In addition, for another example shown in Fig. 4 B and Fig. 8 A, multiple common electrode C of the invention in another embodiment1~CKIt also can be in this
Emit uplink signal P adjacent to the part-time of vertical blanking time section VBI in display period dUL, can not so account for
The time for using vertical blanking time section VBI allows the embedded touch display device 10 can be in the vertical blanking time area
There are more times in section VBI receive the downlink signal P of the active pen 30DLOr the touch-control of other passive object such as fingers
Using.Only, emit uplink signal P with foregoing manner in display period dULIt also needs in view of being used to carry out instantly
The common electrode C of display1~CKOn voltage quasi position, therefore for common electrode corresponding to the driven display pixel (with altogether
Electrode CKFor), common electrode CKIt is still necessary to provide those current driven display pixel Pm(n-2)、Pm(n-1)、PmnReference electricity
Pressure, to maintain normal display image, only common electrode C at this timeKVoltage quasi position can be because of aforementioned offer uplink signal PUL
Way and generate dynamic and adjust, be no longer fixed reference voltage Vcom, therefore as shown in Figure 1, Figure 2 shown in A and Fig. 8 B, the controller
21 are notified that the data drive unit 122, dynamic adjustment output to the driven display pixel Pm(n-2)、Pm(n-1)、PmnPicture
Plain 112 voltage quasi position of electrode.For example, which can be obtained correspondence at present by the controller 21 and be driven
Dynamic display pixel Pm(n-2)、Pm(n-1)、PmnCommon electrode CKVoltage quasi position, and will provide originally give at present correspondence driven
Display pixel Pm(n-2)、Pm(n-1)、PmnFormer data voltage VdnIt is adjusted to Vdn', and Vdn'=Vdn+(VCK- Vcom), i.e., it is former
Data voltage VdnIn addition the voltage V of current common electrodeCKWith the voltage difference between reference voltage Vcom level；When wherein total at present
The voltage V of electrodeCKFor common electrode CKConnect first voltage source VHVoltage quasi position when, common electrode CKVoltage quasi position
V is risen to from VcomCK；In this way, current driven display pixel Pm(n-2)、Pm(n-1)、PmnPixel electrode voltage and this is total
Electrode CKBetween voltage difference can still maintain VP, wherein VPTo be supplied to driven display pixel Pm(n-2)、Pm(n-1)、Pmn
Former data voltage VdnWith common electrode CKPrimary voltage level Vcom between voltage difference, and Vdn+(VCK-Vcom))-VCK's
As a result still with VP(VP=Vdn- Vcom) it is identical, therefore can ensure that those driven display pixel Pm(n-2)、Pm(n-1)、PmnDisplay
Image not will receive common electrode CKEmit uplink signal PULInfluence.As for common electrode CKCorrespondence is not other driven
Display pixel P(m-2)(n-2)、P(m-2)(n-1)、P(m-2)(n)、P(m-1)(n-2)、P(m-1)(n-1)、P(m-1)(n), with wherein P(m-1)nFor and match
It closes shown in Fig. 8 B, due to display pixel P(m-1)nThin film transistor (TFT) Q(m-1)nIt is no longer driven at this time, even if at this time new
Data voltage Vdn' it is provided to thin film transistor (TFT) Q(m-1)n, will not also change display pixel P(m-1)nPixel electrode 112 with
Common electrode CKBetween voltage difference VP, and image shown after still maintaining its script to be driven.Therefore, the present embodiment is certain
It may be implemented in display period d, in display pixel P11~PmnAlso by the common electrode C while showing image1~CK
Emit uplink signal PULIt is received for the active pen 30.It is same as shown in Figure 3A, when by multiple common electrode C1~CKExtremely
Few a part is in having emitted uplink signal P in display period dULAfterwards, then in vertical blanking time section VBI again
Pass through multiple common electrode C1~CKAt least part receive the downlink signal P that is emitted by the active pen 30DL。
In addition, again as shown in Figure 4 C, generally in actively transfer protocol, it will usually in uplink signal PULWith the downlink
Signal PDLBetween intert a waiting time Tgap, in uplink signal PULIt completes that waiting time T can be passed through after sendinggapAfterwards
The downlink signal P of the active pen 30 sending can be receivedDL；In one embodiment, uplink signal PULFurther include the waiting
Time TgapTime span and a downlink signal reception time point tDL, cooperate shown in Fig. 3 A, therefore be somebody's turn to do when the active pen 30 receives
Uplink signal PULAfterwards, it can be learnt that when the touch-control sensing unit 20 can start to receive downlink signal PDL；Again with the present embodiment
For, downstream signal reception time point tDLThe as start time point of vertical blanking time section VBI, that is to say, that uplink
Signal PULLaunch time and waiting time TgapIt is not take up the time of vertical blanking time section VBI.
It please refers to shown in Fig. 5 A, the image for the preset another pattern of the embedded touch display device 10 shows week
Phase, if the image display cycle time is about 16.67ms so that display frequency is 60Hz as an example.The image of this implementation pattern is shown
Period includes execution time section (about 16.67ms), and it divides multiple display period d and multiple horizontal blank time zones
Section HBI, and a wherein horizontal blank time section HBI is respectively abutted after display period d；In respectively display period d,
As shown in Fig. 1 and Fig. 2 B, by the drive element of the grid 121 and 122 foundation of data drive unit of the image driving unit 12
Input image information drives the respectively thin film transistor (TFT) Q of the display panel 1111~Q1n、Q21~Q2n…、Qm1~Qmn, each to enable
Display pixel P11~P1n、P21~P2n…、Pm1~PmnImaging；And in horizontal blank time section HBI, the gate driving
Unit 121 no longer drives respectively thin film transistor (TFT) Q11~Q1n、Q21~Q2n…、Qm1~Qmn, therefore respectively display pixel P11~P1n、
P21~P2n…、Pm1~PmnIt is maintained its pressure difference between the common electrode, that is, maintains the display image of script；Therefore, cooperate
It, can be in horizontal blank time section HBI, by multiple common electrode C shown in Fig. 7 B1~CKEmit uplink signal PUL' supply
The active pen 30 receives.It is however generally that one complete uplink signal P of transmittingUL' time may need 1ms, at that time
Between length be greater than time of single a horizontal blank time section HBI, therefore in this present embodiment, with continuous multiple horizontal blanks
Time section HBI emits a complete uplink signal PUL', i.e. uplink signal PUL' in continuous multiple horizontal blanks
In time section HBI, by multiple common electrode C1~CKTime division emission.As shown in Figure 3A, when the complete uplink signal of time division emission
PUL' after, in passing through multiple common electrode C in remaining horizontal blank time section HBI1~CKReception is emitted by the active pen 30
Downlink signal PDL' or carry out other touch-control applications.
In addition, please refer to shown in Fig. 5 B, multiple common electrode C of the invention in another embodiment1~CKIt also can be continuous in this
The part-time of neighbouring horizontal blank time section HBI carrys out time division emission uplink signal P in multiple display period dUL',
It can be so not take up the time of horizontal blank time section HBI, which can be had more
The horizontal blank time section HBI receive the downlink signal P of the active pen 30DL' or other such as finger touch application.Together
Before take off the explanation of Fig. 4 A, Fig. 8 A and Fig. 8 B, in emitting portion uplink signal P in respectively display period dUL', it equally will not shadow
The display shadow shadow of just driven display pixel simultaneously is rung, the present invention still can be smoothly in complete in continuous multiple display period d
At uplink signal PUL' transmitting.
It please refers to shown in Fig. 6 A, shows week for the image of another the preset pattern of embedded touch display device 10
Phase, if the image display cycle time is about 16.67ms, and it includes have an execution time zone so that display frequency is 60Hz as an example
Section (about 13.67ms) and a vertical blanking time section VBI (about 3ms), and vertical blanking time section VBI is adjacent to this and holds
Row time section；The wherein multiple display period d of the execution time section further division and multiple horizontal blank time sections
HBI, and a wherein horizontal blank time section HBI is respectively abutted after display period d；In the present embodiment, figure is please referred to
Shown in 6A, uplink signal PUL' can be selected according to the aforementioned practice in the part-time of continuous multiple display period d, by
Multiple common electrode C1~CKTime division emission gives the active pen 30 reception, and further passes through in vertical blanking time section VBI
Multiple common electrode C1~CKReceive the downlink signal P of the active pen 30 passbackDL'.Alternatively, as shown in Figure 6B, those horizontal blanks
White time section HBI is used to receive downlink signal PDL', and in vertical blanking time section VBI, i.e., as shown in Figure 4 A,
By multiple common electrode C1~CKEmit uplink signal PUL, later within the remaining time of vertical blanking time section VBI
The downlink signal P that the active pen 30 is emitted is received againDL。
In conclusion the embedded touch display device 10 of the invention is directly by being used as display purposes and touching
The common electrode C of detection applications1~CKTo emit uplink signal PUL；In this way, being filled when active pen 30 is shown close to the embedded touch
When setting 10, uplink signal P ready to receiveUL, signal communicating is carried out into the embedded touch display device 10, keeps this embedded
Touch control display apparatus 10 detects the position of the active pen 30 and completes interactive operation between the two.
Certainly, the present invention can also have other various embodiments, without deviating from the spirit and substance of the present invention, ripe
It knows those skilled in the art and makes various corresponding changes and modifications, but these corresponding changes and change in accordance with the present invention
Shape all should fall within the scope of protection of the appended claims of the present invention.
Claims (21)
1. a kind of communication method of embedded display device and active pen, wherein the embedded display device includes multiple common-batteries
Pole；It is characterized in that, the communication method includes：
Within an image display cycle, a uplink signal is emitted by multiple common electrode, to carry out signal communicating with an active pen.
2. communication method according to claim 1, which is characterized in that the image display cycle includes an execution time section
An and vertical blanking time section；Wherein：
In the vertical blanking time section, which is emitted by multiple common electrode, and after uplink signal transmitting,
The signal that the active pen is issued is received by multiple common electrode.
3. communication method according to claim 1, which is characterized in that the image display cycle includes an execution time section
An and vertical blanking time section；Wherein the execution time section includes a display period：
Within the display period, which is emitted by multiple common electrode, and after a waiting time, in the vertical blank
In white time section, the signal which is issued is received by multiple common electrode.
4. communication method according to claim 1, which is characterized in that the image display cycle includes an execution time zone
Section；Wherein, which divides multiple display periods and multiple horizontal blank time sections, and the respectively display time
A wherein horizontal blank time section is abutted after section；Wherein：
The uplink signal is in continuous multiple horizontal blank time sections, by multiple common electrode time division emission.
5. communication method according to claim 4, which is characterized in that when remaining horizontal blank of the execution time section
Between in section, the signal which is issued is received by multiple common electrode.
6. communication method according to claim 1, which is characterized in that the image display cycle includes an execution time zone
Section；Wherein, which divides multiple display periods and multiple horizontal blank time sections, and the respectively display time
A wherein horizontal blank time section is abutted after section；Wherein：
The uplink signal is within continuous multiple display periods, by multiple common electrode time division emission.
7. communication method according to claim 6, which is characterized in that in multiple horizontal blank of the execution time section
In time section, the signal which is issued is received by multiple common electrode timesharing.
8. communication method according to claim 7, which is characterized in that it is vertical that the image display cycle further includes one
Blank time section；Wherein：
In in the vertical blanking time section, the signal which is issued is received by multiple common electrode.
9. communication method according to claim 1, which is characterized in that the image display cycle includes an execution time zone
Section and a vertical blanking time section；Wherein, when which divides multiple display periods and multiple horizontal blanks
Between section, and respectively adjacent wherein horizontal blank time section after the display period；Wherein：
In the vertical blanking time section, which is emitted by multiple common electrode, and after uplink signal transmitting,
The signal that the active pen is issued is received by multiple common electrode；And
In multiple horizontal blank time section, the signal which is issued is received by multiple common electrode timesharing.
10. communication method according to any one of claim 1 to 9, which is characterized in that above-mentioned transmitting uplink signal warp
The synchronizing information included as the uplink signal is changed by the voltage quasi position controlled in multiple common electrode, wherein multiple common-battery
When the voltage quasi position of pole is high, numerical value is represented " 1 ", when the voltage quasi position of multiple common electrode is low, represent numerical value " 0 ".
11. communication method according to any one of claim 1 to 9, which is characterized in that the above-mentioned transmitting uplink signal produces
A raw voltage signal gives multiple common electrode, which includes synchronizing information.
12. a kind of embedded touch display device, which is characterized in that including：
Corresponding multiple display pixels and multiple common electrodes；
One image driving unit is electrically connected the display pixel；And
One touch-control sensing unit is electrically connected the common electrode and the image driving unit；
Wherein, within an image display cycle, which emits the uplink signal via multiple common electrode, with
One active pen carries out signal communicating.
13. embedded touch display device according to claim 12, which is characterized in that the touch-control sensing unit includes：
One controller is electrically connected to a data drive unit of the image driving unit；
Multiple sensing circuits are electrically connected to the controller, and respectively the sensing circuit includes：
One multiplexer, one first voltage source of electrical connection, a second voltage source and its corresponding common electrode, controller control should
Multiplexer makes common electrode switching be connected to the first voltage source or the second voltage source, and wherein the voltage of the first voltage source is quasi-
Position is different from the voltage quasi position of the second voltage source；And
One receives circuit, is electrically connected by a first switch with the corresponding common electrode, which is electrically connected to the control
Device, by the actuation of the controller first switch.
14. embedded touch display device according to claim 13, it is characterised in that：
The uplink signal include by numerical value " 1 " and " 0 " synchronizing information constituted；
Numerical value of the controller according to synchronizing information " 1 " and " 0 " switching for controlling the multiplexer, to adjust its corresponding common-battery
The voltage quasi position of pole makes multiple common electrode emit the uplink signal.
15. embedded touch display device according to claim 14, which is characterized in that when the controller is aobvious in the image
Show in a display period in period, adjust the voltage quasi position of multiple common electrode, multiple common electrode is made to emit uplink letter
Number when, which provides the voltage difference of the voltage quasi position of respectively common electrode adjustment front and back and gives the data drive unit, should
Data voltage level plus output after the voltage difference to driven display pixel, it is aobvious to be carried out image by data drive unit
Show.
16. embedded touch display device according to claim 12, which is characterized in that the touch-control sensing unit includes：
One controller is electrically connected to a data drive unit of the image driving unit；
Multiple sensing circuits are electrically connected to the controller, and respectively the sensing circuit includes：
One uplink signal generate unit, be electrically connected to the controller, the uplink signal generate unit by a second switch with
Corresponding common electrode electrical connection, the second switch are electrically connected to the controller, control the second switch by the controller
Actuation；And
One receives circuit, is electrically connected by first switch common electrode corresponding with this, which is electrically connected to the controller,
The actuation of the first switch is controlled by the controller.
17. embedded touch display device according to claim 16, which is characterized in that the controller controls this and first opens
It closes and closes, and control respectively uplink signal generation unit and export to a voltage signal of the corresponding common electrode, by the common electrode
Emit the uplink signal；Wherein the voltage signal includes the synchronizing information of the uplink signal.
18. a kind of communication method of embedded display device and active pen, it is characterised in that the embedded display device includes
Multiple common electrodes；Wherein, which includes：
It receives via a receiving unit of an active pen from multiple common electrodes of the embedded display device and emits uplink letter
Number, to carry out signal communicating with the embedded display device；
Wherein signal communicating above-mentioned was implemented in an image display cycle of the embedded display device.
19. communication method according to claim 18, which is characterized in that the image display cycle includes an execution time zone
Section and a vertical blanking time section；Wherein：
In the vertical blanking time section, is received by the Transmit-Receive Unit of the active pen and believed by the uplink that multiple common electrode emits
Number.
20. communication method according to claim 18, which is characterized in that the image display cycle includes an execution time zone
Section and a vertical blanking time section；Wherein the execution time section includes a display period：
Within the display period, the uplink signal emitted by multiple common electrode is received by the Transmit-Receive Unit of the active pen.
21. communication method according to claim 20, which is characterized in that the image display cycle includes the execution time
Section；Wherein, which divides multiple display periods and multiple horizontal blank time sections, and respectively the display when
Between adjacent wherein horizontal blank time section after section；Wherein：
In the horizontal blank time section, is received by the Transmit-Receive Unit of the active pen and believed by the uplink that multiple common electrode emits
Number.
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| US62/503,308 | 2017-05-08 | ||
| TW107100398A TWI652605B (en) | 2017-05-08 | 2018-01-04 | In-cell touch display device and communicating method thereof with an active stylus thereof |
| TW107100398 | 2018-01-04 |
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