CN107452310A - touch display driver and driving method thereof - Google Patents
touch display driver and driving method thereof Download PDFInfo
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- CN107452310A CN107452310A CN201610534247.0A CN201610534247A CN107452310A CN 107452310 A CN107452310 A CN 107452310A CN 201610534247 A CN201610534247 A CN 201610534247A CN 107452310 A CN107452310 A CN 107452310A
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- 238000000034 method Methods 0.000 title claims abstract description 21
- 230000009471 action Effects 0.000 claims abstract description 131
- 238000001514 detection method Methods 0.000 claims abstract description 14
- 238000013499 data model Methods 0.000 claims description 91
- 230000000007 visual effect Effects 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 10
- 238000010586 diagram Methods 0.000 description 5
- 101100425896 Mus musculus Tpm1 gene Proteins 0.000 description 3
- 101100537780 Mus musculus Tpm2 gene Proteins 0.000 description 3
- 239000013078 crystal Substances 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- 230000006870 function Effects 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 3
- 101150083434 Dpm3 gene Proteins 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002688 persistence Effects 0.000 description 1
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- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
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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
- G06F3/0416—Control or interface arrangements specially adapted for digitisers
Abstract
The invention provides a touch display driver and a driving method thereof. The touch display driver comprises a control circuit, a grid drive circuit and a touch detection circuit. The control circuit divides each of the plurality of picture frame periods into a plurality of picture display action sections and a plurality of touch sensing action sections. The grid drive circuit sequentially drives the grid drive wires of the embedded touch display panel in each picture display action interval so as to carry out picture display action. The touch detection circuit performs a touch sensing operation in a touch sensing operation interval. The control circuit controls the grid driving circuit to drive different numbers of grid driving wires in the initial picture display action interval of each picture frame period, so that the grid driving circuit stops driving on different grid driving wires when the picture display action intervals of the picture frame periods are finished. Therefore, the invention can reduce the influence of the cross grain line visual effect problem on the image display quality.
Description
Technical field
The present invention relates to a kind of touch-control Display Technique, and particularly one kind can lift embedded touch display surface
The touch-control display driver and its driving method of plate picture quality.
Background technology
In general, embedded touch (in-cell touch) display panel is that touch control component is incorporated into display surface
In the making of plate, and touch controllable function and display function are realized by way of timesharing driving, and it is so-called
Timesharing driving, be in a picture frame cycle (frame period) timesharing carry out picture display action with
Touch sensing acts.However, in general timesharing driving method, when progress touch sensing action is temporary
When interrupt picture display action when, in each picture frame cycle, interrupt picture display action time point
Or the position of the raster data model line of the In-cell touch display panel corresponding to interruption picture display action is all
Immobilize, so easily producing band line regards effect problem, such as shown in Fig. 1, embedded touch is shown
Panel 900 is in a plurality of band line 910 occur during picture display.
For example, in each picture frame cycle shown in Fig. 1 (including picture frame cycle FP1, FP2 ...,
FPy), In-cell touch display panel 900 can be sequentially driven in picture display action section DP_A
1st article to nth bar raster data model line G1~Gn to carry out picture display action, then can be in touch sensing
The touch sensing action that section TP_A carries out In-cell touch display panel 900 is acted, then in picture
(n+1) article of In-cell touch display panel 900 is sequentially driven in the DP_B of display action section to 2n
Bar raster data model line G (n+1)~G2n is to carry out picture display action, and touch sensing action section of continuing,
The rest may be inferred until scanning through a picture frame cycle, and wherein n, y is positive integer.Due in each picture frame
In cycle (including picture frame cycle FP1, FP2 ..., FPy), interrupt picture because carrying out touch sensing action
Raster data model line corresponding to the display action of face fall within nth bar and its multiple raster data model line Gn,
G2n ... on, so that it takes up a position, for example, nth bar raster data model line Gn and (n+1) bar raster data model line
The brightness that pixel cell (being made up of sub- pixel cell R, G, B) on G (n+1) is presented, compared to it
The brightness that pixel cell on remaining raster data model line is presented has a little drop.The rest may be inferred, (n's
Multiple) article raster data model line and the raster data model line of (n multiple+1) article can all have identical situation, such as
This one, the phenomenon for having a plurality of band 910 on touch-control display panel 900 can be observed.
In addition, in each picture frame cycle (including picture frame cycle FP1, FP2 ..., FPy),
When the touch sensing section TP_A to be entered of In-cell touch display panel 900 carries out touch sensing action,
All be nth bar and its multiple raster data model line Gn, G2n ... interrupt picture display action, therefore
Raster data model line Gn, G2n of nth bar and its multiple ... it is corresponding in In-cell touch display panel
Partial crystals tube elements in gate driving circuit (such as Gate driver on Array, GOA) can by it is long when
Between high pressure deterioration, may so cause the i-v curve (IV curve) of the partial crystals tube elements to produce
Raw to offset and cause band line to regard effect problem, severe patient is also possible to cause the partial crystals tube elements to damage.
Particularly, after reliability test is carried out to In-cell touch display panel 900, above-mentioned band line regards
Effect problem can be more serious, the quality for so showing reduction image.
The content of the invention
In view of this, present invention offer is a kind of drives to drive the touch-control of In-cell touch display panel to show
Dynamic device and driving method, (such as in a number of picture frame cycle), picture can be worked as in some time section
(because of touch sensing action to be carried out) at the end of display action section, the raster data model in touch-control display driver
Circuit stops driving on different raster data model lines, that is, gate driving circuit stops the grid of driving
Drives line does not repeat (or not fixing), can so avoid gate driving circuit from chronically stopping driving in fixation
Raster data model line on, and then embedded touch display surface corresponding to the raster data model line of the fixation can be avoided
Transistor unit in the gate driving circuit of plate is deteriorated by prolonged high drive, and can reduce horizontal stroke
Streakline regards influence of the effect problem to display quality of image.
The touch-control display driver of the present invention includes control circuit, gate driving circuit and touch control detection electricity
Road.Control circuit by each of multiple picture frame cycles being divided into multiple picture display action sections
Section is acted with multiple touch sensings.Each picture display action section acts section each other with each touch sensing
Staggeredly, and each touch sensing acts section after corresponding each picture display action section.Raster data model
Circuit is controlled by control circuit, in each picture display action section, to drive embedded touch in order
At least one in a plurality of raster data model line of display panel is controlled to carry out picture display action.Touch control detection
Circuit is controlled by control circuit, in this little touch sensing action section, control embedded touch shows
Show the voltage level of the raster data model line of panel and carry out touch sensing action.Control circuit control gate is driven
Dynamic circuit drives the raster data model of varying number in the initial picture display action section in each picture frame cycle
Line, so that at the end of this little picture display action section in this little picture frame cycle, gate driving circuit stops
Driving is on different raster data model lines.
In one embodiment of this invention, above-mentioned control circuit control gate drive circuit is in each picture frame week
The quantity of the raster data model line driven in each picture display action section of phase, so that this little picture frame cycle
This little picture display action section at the end of, gate driving circuit stop driving in different raster data models
On line.
In one embodiment of this invention, above-mentioned control circuit adjusts each touch sensing in each picture frame cycle
Act the time length in section.
In one embodiment of this invention, above-mentioned control circuit dynamic adjusts the quantity in this little picture frame cycle.
In one embodiment of this invention, the quantity in this above-mentioned a little picture frame cycles shows less than embedded touch
Show the quantity of this little raster data model line of panel.
The driving method of the present invention comprises the following steps.Each of multiple picture frame cycles are divided into more
Touched with multiple touch sensings action section, each picture display action section with each in individual picture display action section
It is interlaced with each other to touch sensor operation section, and each touch sensing acts section in corresponding each picture display action
After section.In each picture display action section, driven in order by gate driving circuit embedded
In a plurality of raster data model line of touch-control display panel at least one to carry out picture display action, and herein
In a little touch sensings action sections, by touch control detection circuit control In-cell touch display panel this is a little
The voltage level of raster data model line simultaneously carries out touch sensing action, wherein, by gate driving circuit each
The raster data model line of varying number is driven in the initial picture display action section in picture frame cycle, so that this is a little
At the end of this little picture display action section in picture frame cycle, gate driving circuit stops driving different
On raster data model line.
Based on above-mentioned, show and drive in the touch-control for the In-cell touch display panel that the embodiment of the present invention is proposed
In dynamic device and driving method, (such as in a number of picture frame cycle), picture can be worked as in some time section
(because of touch sensing action to be carried out) at the end of the display action section of face, the grid in touch-control display driver drives
Dynamic circuit will stop driving on different raster data model lines, that is, gate driving circuit shows in picture and moved
The raster data model line for making to stop at the end of section driving is not fixed.Consequently, it is possible to fixation can be avoided
The transistor unit in gate driving circuit corresponding to raster data model line is bad by prolonged high drive
Change, and band line can be reduced and regard influence of the effect problem to display quality of image.
For features described above of the invention and advantage can be become apparent, special embodiment below, and coordinate
Accompanying drawing is described in detail below.
Brief description of the drawings
Fig. 1 is in general In-cell touch display panel in a plurality of band occur during picture display
The schematic diagram of line；
Fig. 2 be according to depicted in one embodiment of the invention driving touching for In-cell touch display panel
Control the circuit box schematic diagram of display driver；
Fig. 3 is Fig. 2 driver' s timing schematic diagram of the touch-control display driver in the continuous N picture frame cycle；
Fig. 4 is the step schematic flow sheet of the driving method according to depicted in one embodiment of the invention.
Description of reference numerals：
100：Touch-control display driver；
120：Control circuit；
140：Gate driving circuit；
160：Touch control detection circuit；
800、900：In-cell touch display panel；
910：Band line；
DP_A、DP_B、DP1_1、DP1_2、DP1_3、DP2_1、DP2_2、DP2_3、DPm_1、
DPm_2、DPm_3：Picture display action section；
FP1、FP2、…、FPm、FPy：The picture frame cycle；
G1~Gx, G (n-1), Gn, G (n+1), G (n+2), Gm, GI1、GI2、GIm、G(I1+1)、
G(I2+1)、G(Im+1)、G(I1+K)、G(I2+K)、G(Im+K)、G(I1+K1)、G(I2+K2)、G(Im+Km)：
Raster data model line；
R、G、B：Sub- pixel cell；
S400、S410：Step；
TP_A、TP1_1、TP1_2、TP2_1、TP2_2、TPm_1、TPm_2：Touch sensing moves
Make section.
Embodiment
With detailed reference to the one exemplary embodiment of the present invention, illustrate the one exemplary embodiment in the accompanying drawings
Example.In addition, all possible parts, use element/component of identical label in schema and embodiment
Represent same or like part.
Below referring to Fig. 2 and Fig. 3, Fig. 2 be according to depicted in one embodiment of the invention to
The circuit box schematic diagram of the touch-control display driver of In-cell touch display panel is driven, and Fig. 3 is figure
Driver' s timing schematic diagram of the 2 touch-control display driver in the continuous m picture frame cycle, wherein quantity m are
Adjustable positive integer.Touch-control display driver 100 can be used to drive In-cell touch display panel 800.
There is In-cell touch display panel 800 x bars raster data model line G1~Gx, wherein quantity x can be any
Positive integer, and quantity m is less than quantity x.In fact, In-cell touch display panel 800 is had
Raster data model line the visual practical application of quantity or design requirement depending on.
Touch-control display driver 100 may include control circuit 120, gate driving circuit 140 and touch-control
Circuit 160 is detected, but the present invention is not limited thereto.Control circuit 120 can draw each picture frame cycle
It is divided into multiple picture display action sections and multiple touch sensings action section, wherein, each picture frame week
The visual practical application of quantity in quantity and touch sensing the action section in interim picture display action section
Or depending on design requirement.However, for convenience of description, it is assumed herein that showing as depicted in fig. 3, control circuit
120 can sequentially be divided into picture frame cycle FP1 picture display action section DP1_1, touch sensing action
Section TP1_1, picture display action section DP1_2, touch sensing action section TP1_2 and picture
Display action section DP1_3；Picture frame cycle FP2 can be sequentially divided into picture and shown by control circuit 120
Action section DP2_1, touch sensing act section TP2_1, picture display action section DP2_2, touched
Touch sensor operation section TP2_2 and picture display action section DP2_3；Control circuit 120 will can be schemed
Frame cycle FPm is sequentially divided into picture display action section DPm_1, touch sensing action section
TPm_1, picture display action section DPm_2, touch sensing action section TPm_2 and picture are shown
Act section DPm_3, remaining picture frame cycle then can the rest may be inferred, but the present invention is not limited thereto.
Gate driving circuit 140 is controlled by control circuit 120.In the picture frame cycle FP1 shown in Fig. 3,
Gate driving circuit 140 can drive embedded touch in order in picture display action section DP1_1
At least one raster data model line of display panel 800 is to carry out picture display action.Similarly, grid drives
Dynamic circuit 140 can be respectively in picture display action section DP1_2 and DP1_3, and driving is embedded in order
At least one raster data model line of formula touch-control display panel 800 is to carry out picture display action.Raster data model
The running in picture display action section of the circuit 140 in picture frame cycle FP2~FPm then can the rest may be inferred,
Therefore repeat no more.
Touch control detection circuit 160 is controlled by control circuit 120.In the picture frame cycle FP1 shown in Fig. 3,
Touch control detection circuit 160 can control embedded touch display surface in touch sensing acts section TP1_1
Raster data model line G1~Gx of plate 800 voltage level simultaneously carries out touch sensing action.In the reality of the present invention
Apply in example, in touch sensing acts section TP1_1, touch control detection circuit 160 can control raster data model
Line G1~Gx maintains fixed voltage level, or can be by raster data model line G1~Gx voltage signal
It is synchronous with the touch-control drive signal holding of the common electrode of In-cell touch display panel 800 to be carried out with reducing
Driving load when touch sensing acts, but the present invention is not limited thereto.Similarly, touch control detection circuit
160 in touch sensing acts section TP1_2, can control the grid of In-cell touch display panel 800
Drives line G1~Gx voltage level simultaneously carries out touch sensing action.Gate driving circuit 140 is in picture frame week
The running in the touch sensing action section in phase FP2~FPm then can the rest may be inferred, therefore repeat no more.
Specifically, in continuous m picture frame cycle FP1~FPm shown in Fig. 3, control circuit 120
Controllable gate driving circuit 140 drives in the initial picture display action section in each picture frame cycle
The raster data model line of varying number.For example, control circuit 120 can control gate driving circuit 140
I is sequentially driven in picture frame cycle FP1 initial picture display action section DP1_11Bar raster data model line
G1~GI1；Control circuit 120 can control gate driving circuit 140 in picture frame cycle FP2 initial picture
I is sequentially driven in the DP2_1 of display action section2Bar raster data model line G1~GI2；Similarly, control electricity
Road 120 can control gate driving circuit 140 in picture frame cycle FPm initial picture display action section
I is sequentially driven in DPm_1mBar raster data model line G1~GIm, wherein quantity I1、I2、…、ImCan be small
In quantity x positive integer, and quantity I1、I2、…、ImIt is different from each other and can be obtained by random manner.
In addition, the present invention does not also limit quantity I1、I2、…、ImBetween magnitude relationship.Consequently, it is possible to
In picture frame cycle FP1~FPm, when initial picture display action section DP1_1, DP2_1 ..., DPm_1
When terminating and proceeding by the touch sensing action of In-cell touch display panel 800, gate driving circuit
140 will stop driving respectively in different raster data model line GI1、GI2、…、GImOn, therefore grid can be avoided
Pole drive circuit 140 (i.e. continuous m picture frame cycle FP1~FPm) in some time section stops driving
On fixed raster data model line, so as to cause band line to regard effect problem.
In one embodiment of this invention, in continuous m picture frame cycle FP1~FPm shown in Fig. 3,
It is dynamic that control circuit 120 can control remaining picture of gate driving circuit 140 in each picture frame cycle to show
Make to drive the raster data model line of identical quantity in section, but the invention is not restricted to this.For example, control
Circuit 120 can control gate driving circuit 140 in picture frame cycle FP1 remaining picture display action section
K bar raster data model line G (I are sequentially driven in DP1_21+ 1)~G (I1+K)；Control circuit 120 can control grid
Pole drive circuit 140 is sequentially driven in picture frame cycle FP2 remaining picture display action section DP2_2
K bar raster data model line G (I2+ 1)~G (I2+K)；The rest may be inferred, and control circuit 120 can control raster data model
Circuit 140 is sequentially driven K bars in picture frame cycle FPm remaining picture display action section DPm_2
Raster data model line G (Im+ 1)~G (Im+ K), wherein quantity K may be less than quantity x positive integer.So
One, in continuous m picture frame cycle FP1~FPm shown in Fig. 3, when picture display action section
DP1_2, DP2_2 ..., DPm_2 terminate and proceed by In-cell touch display panel 800 touch
When touching sensor operation, gate driving circuit 140 will stop driving respectively in different raster data model lines
G(I1+K)、G(I2+K)、…、G(Im+ K) on, but the present invention is not limited thereto.
In another embodiment of the invention, in continuous m picture frame cycle FP1~FPm shown in Fig. 3
In, control circuit 120 also can control gate driving circuit 140 each picture frame cycle remaining picture
The raster data model line of varying number is driven in display action section.For example, control circuit 120 is controllable
Gate driving circuit 140 processed in picture frame cycle FP1 remaining picture display action section DP1_2 sequentially
Drive K1Bar raster data model line G (I1+ 1)~G (I1+K1)；Control circuit 120 can control gate driving circuit
140 are sequentially driven K in picture frame cycle FP2 remaining picture display action section DP2_22Bar grid drives
Moving-wire G (I2+ 1)~G (I2+K2)；The rest may be inferred, and control circuit 120 can control gate driving circuit 140 to exist
K is sequentially driven in picture frame cycle FPm remaining picture display action section DPm_2mBar raster data model line
G(Im+ 1)~G (Im+Km), wherein quantity K1、K2、...、KmIt may be less than quantity x positive integer, and
Quantity (I1+K1)、(I2+K2)、…、(Im+Km) different from each other.In addition, the present invention does not also limit number
Measure (I1+K1)、(I2+K2)、…、(Im+Km) between magnitude relationship.Consequently, it is possible to shown in Fig. 3
In continuous m picture frame cycle FP1~FPm, when picture display action section DP1_2, DP2_2 ...,
When DPm_2 terminates and proceeds by the touch sensing action of In-cell touch display panel 800, grid drives
Dynamic circuit 140 will stop driving respectively in different raster data model line G (I1+K1)、G(I2+K2)、…、
G(Im+Km) on, but the present invention is not limited thereto.As long as in fact, in above-mentioned continuous m picture frame week
In phase FP1~FPm, when picture display action section DP1_2, DP2_2 ..., at the end of DPm_2,
Allow gate driving circuit 140 to stop the raster data model line of driving to differ, be the spiritual institute of the present invention
.
It follows that in continuous m picture frame cycle FP1~FPm shown in Fig. 3, control circuit 120
The controllable institute in each picture display action section in each picture frame cycle of gate driving circuit 140
The quantity of the raster data model line of driving, so that each figure in continuous m picture frame cycle FP1~FPm
At the end of each picture display action section in frame cycle, gate driving circuit 140 exists driving is stopped
On different raster data model lines.Consequently, it is possible to there is the effect of the persistence of vision based on human eye, can be significantly
Ground improves the problem of band line regards effect.
In one embodiment of this invention, control circuit 120 can adjust each of each picture frame cycle
Touch sensing acts the time length in section, and the grid corresponding to the raster data model line of driving are stopped with adjustment
The time that transistor unit in the drive circuit of pole is deteriorated by high pressure.For example, as shown in figure 3, control
Circuit 120 processed can adjust picture frame cycle FP1 touch sensing action section TP1_1 time length, with
Adjust raster data model line GI1Transistor unit in corresponding gate driving circuit 140 is deteriorated by high pressure
Time.The time span that section TP1_1 is acted when touch sensing is cured in short-term, raster data model line GI1Institute
The time that transistor unit in corresponding gate driving circuit 140 is deteriorated by high pressure is just shorter, otherwise also
So.The action of remaining touch sensing section TP1_2, TP2_1, TP2_2, TPm_1, TPm_2 also may be used
The rest may be inferred.
In one embodiment of this invention, control circuit 120 is also dynamically adapted quantity m value.Work as number
When amount m value is bigger, represent within longer time interval (that is, in the continuous picture frame cycle the more
Within), the raster data model line that gate driving circuit 140 stops driving not repeating, and vice versa.
In one embodiment of this invention, control circuit 120 can be hardware, firmware or be stored in
Reservoir and by microprocessor (micro processor) or digital signal processor (DSP) it is loaded perform it is soft
Part or machine-executable program code.If employing hardware to realize, then control circuit 120 can be by more
Individual circuit chip is completed, and can also be reached by single integrated circuit chip, but the present invention is not with this
For limitation.Above-mentioned multiple circuit chips or single integrated circuit chip can use specific function integrated circuit
(ASIC) or programmable logic gate array (FPGA) is realized.And above-mentioned memory can be for example random
Access memory, the read only memory, flash memory etc..In addition, on gate driving circuit 140
Where wanting improved emphasis with the implementation detail and non-invention of touch control detection circuit 160, and it is ability
Field technique personnel are familiar with, therefore seldom repeat herein.
Fig. 4 is the step schematic flow sheet of the driving method according to depicted in one embodiment of the invention.Please be same
When 2~Fig. 4 of reference picture, what the driving method of this exemplary embodiment can be used to drive shown in Fig. 2 embedded touches
Control display panel 800.The driving method of this exemplary embodiment comprises the following steps.First, in step S400
In, by each of multiple picture frame cycles (such as m picture frame cycle FP1~FPm shown in Fig. 3) (example
Such as picture frame cycle FP1) be divided into multiple picture display action sections (such as DP1_1, DP1_2, DP1_3,
But not limited to this) and multiple touch sensings action section (such as TP1_1, TP1_2, but not limited to this), its
Middle picture display action section (such as DP1_1, DP1_2, DP1_3) and touch sensing action section (such as
TP1_1, TP1_2) it is interlaced with each other, and touch sensing action section (such as TP1_1) shows in corresponding picture
Show action section (such as DP1_1) after.
Then, in step S410, in each picture display action section, raster data model electricity is passed through
Road 140 drives at least one raster data model line of In-cell touch display panel 800 to carry out picture in order
Face display action；And in each touch sensing acts section, controlled by touch control detection circuit 160
Raster data model line G1~Gx of In-cell touch display panel 800 voltage level simultaneously carries out touch sensing and moved
Make.Specifically, can be by gate driving circuit 140 in above-mentioned m picture frame cycle FP1~FPm
Each picture frame cycle initial picture display action section in drive varying number raster data model line.
For example, as described above, can by gate driving circuit 140 picture frame cycle FP1 initial
I is sequentially driven in picture display action section DP1_11Bar raster data model line G1~GI1；Grid can be passed through
Drive circuit 140 is sequentially driven I in picture frame cycle FP2 initial picture display action section DP2_12
Bar raster data model line G1~GI2；The rest may be inferred, can be by gate driving circuit 140 in picture frame cycle FPm
Initial picture display action section DPm_1 in be sequentially driven ImBar raster data model line G1~GIm, wherein
Quantity I1、I2、…、ImIt may be less than quantity x positive integer, and quantity I1、I2、…、ImEach other not
It can be obtained together and by random manner.In addition, the present invention does not also limit quantity I1、I2、…、Im
Between magnitude relationship.Consequently, it is possible to when initial picture display action section DP1_1, DP2_1 ...,
When DPm_1 terminates and proceeds by the touch sensing action of In-cell touch display panel 800, grid drives
Dynamic circuit 140 stops driving in different raster data model line GI respectively1、GI2、…、GImOn, therefore can
Gate driving circuit 140 (i.e. continuous m picture frame cycle FP1~FPm) in some time section is avoided to stop
Only drive on identical raster data model line, so as to cause band line to regard effect problem.
In addition, the details of the driving method of the embodiment of the present invention can be by the narration of Fig. 2 and Fig. 3 embodiments
In obtain enough teachings, suggestion illustrates with implementing, therefore repeat no more.
In summary, the touch-control display of the In-cell touch display panel proposed in the embodiment of the present invention is driven
In dynamic device and driving method, (such as in a number of picture frame cycle), picture can be worked as in some time section
(because of touch sensing action to be carried out) at the end of the display action section of face, the grid in touch-control display driver drives
Dynamic circuit will stop driving on different raster data model lines, that is, gate driving circuit stops driving
Raster data model line is not fixed.Consequently, it is possible to the raster data model corresponding to fixed raster data model line can be avoided
Transistor unit in circuit is deteriorated by prolonged high drive, and can reduce band line and regard effect problem
Influence to display quality of image.
Finally it should be noted that：Various embodiments above is merely illustrative of the technical solution of the present invention, rather than right
It is limited；Although the present invention is described in detail with reference to foregoing embodiments, this area it is common
Technical staff should be understood：It can still modify to the technical scheme described in foregoing embodiments,
Equivalent substitution either is carried out to which part or all technical characteristic；And these modifications or replacement, and
The essence of appropriate technical solution is not set to depart from the scope of various embodiments of the present invention technical scheme.
Claims (10)
- A kind of 1. touch-control display driver, it is characterised in that to drive In-cell touch display panel, Including：Control circuit, each of multiple picture frame cycles are divided into multiple picture display action areas Between with multiple touch sensings act section, each picture display action section is moved with each touch sensing It is interlaced with each other to make section, and each touch sensing acts section in corresponding each picture display action After section；Gate driving circuit, it is controlled by the control circuit, in each picture display action section In, drive in order in a plurality of raster data model line of the In-cell touch display panel at least one with Carry out picture display action；AndTouch control detection circuit, it is controlled by the control circuit, in the multiple touch sensing active region Between in, control the voltage level of a plurality of raster data model line of the In-cell touch display panel to go forward side by side Row touch sensing acts,Wherein, the control circuit controls initial of the gate driving circuit in each picture frame cycle to draw The a plurality of raster data model line of varying number is driven in the display action section of face, so that the multiple picture frame At the end of the multiple picture display action section in cycle, the gate driving circuit stops driving not On the same a plurality of raster data model line.
- 2. touch-control display driver according to claim 1, it is characterised in that：The control circuit controls each picture of the gate driving circuit in each picture frame cycle to show Show the quantity of a plurality of raster data model line driven in action section, so that the multiple picture frame cycle The multiple picture display action section at the end of, the gate driving circuit stops driving different On a plurality of raster data model line.
- 3. touch-control display driver according to claim 1, it is characterised in that：The control circuit adjusts the time length in each touch sensing action section in each picture frame cycle It is short.
- 4. touch-control display driver according to claim 1, it is characterised in that the control circuit Dynamic adjusts the quantity in the multiple picture frame cycle.
- 5. touch-control display driver according to claim 4, it is characterised in that the multiple picture frame Number of the quantity in cycle less than a plurality of raster data model line of the In-cell touch display panel Amount.
- A kind of 6. driving method of In-cell touch display panel, it is characterised in that including：Each of multiple picture frame cycles are divided into multiple picture display action sections with multiple touchings to feel Survey acts section, and each picture display action section and each touch sensing action section are interlaced with each other, And each touch sensing acts section after corresponding each picture display action section；AndIn each picture display action section, driven in order by gate driving circuit described embedded In a plurality of raster data model line of formula touch-control display panel at least one to carry out picture display action, and In the multiple touch sensing action section, the embedded touch is controlled to show by touch control detection circuit The voltage level of a plurality of raster data model line of panel simultaneously carries out touch sensing action,Wherein, by the gate driving circuit in the initial picture display action area in each picture frame cycle Between it is middle driving varying number a plurality of raster data model line so that the multiple picture frame cycle is described more At the end of individual picture display action section, the gate driving circuit stops driving different the multiple On raster data model line.
- 7. driving method according to claim 6, it is characterised in that also include：Among each picture display action section for adjusting each picture frame cycle, by the raster data model The quantity for a plurality of raster data model line that circuit is driven, so that the multiple picture frame cycle is described more At the end of individual picture display action section, the gate driving circuit stops driving different described a plurality of On raster data model line.
- 8. driving method according to claim 6, it is characterised in that also include：Adjust the time length in each touch sensing action section in each picture frame cycle.
- 9. driving method according to claim 6, it is characterised in that also include：Dynamic adjusts the quantity in the multiple picture frame cycle.
- 10. driving method according to claim 9, it is characterised in that the multiple picture frame cycle The quantity less than the In-cell touch display panel a plurality of raster data model line quantity.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW105117019 | 2016-05-31 | ||
| TW105117019A TWI582669B (en) | 2016-05-31 | 2016-05-31 | Touch display driver and driving method for improving image quality of in-cell touch display panel |
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| CN107452310A true CN107452310A (en) | 2017-12-08 |
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| CN201610534247.0A Pending CN107452310A (en) | 2016-05-31 | 2016-07-08 | touch display driver and driving method thereof |
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| CN (1) | CN107452310A (en) |
| TW (1) | TWI582669B (en) |
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| CN110308810A (en) * | 2018-03-27 | 2019-10-08 | 奕力科技股份有限公司 | Driving method, touch-control display control unit and the touch-control display control method of touch control display device |
| CN110383219A (en) * | 2018-02-14 | 2019-10-25 | 深圳市为通博科技有限责任公司 | Touch controller, touch control display system and touch-control show synchronous method |
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| CN109509414A (en) * | 2017-09-15 | 2019-03-22 | 敦泰电子有限公司 | Embedded display equipment and its scan method |
| CN109508107B (en) * | 2017-09-15 | 2022-03-08 | 敦泰电子有限公司 | Embedded touch display device |
| US11861091B2 (en) * | 2021-12-20 | 2024-01-02 | Lg Display Co., Ltd. | Display device |
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Also Published As
| Publication number | Publication date |
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| TWI582669B (en) | 2017-05-11 |
| TW201741830A (en) | 2017-12-01 |
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