CN110221729A - A kind of driving method, device and display device - Google Patents
A kind of driving method, device and display device Download PDFInfo
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- CN110221729A CN110221729A CN201910518120.3A CN201910518120A CN110221729A CN 110221729 A CN110221729 A CN 110221729A CN 201910518120 A CN201910518120 A CN 201910518120A CN 110221729 A CN110221729 A CN 110221729A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0412—Digitisers structurally integrated in a display
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0416—Control or interface arrangements specially adapted for digitisers
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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
- G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
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Abstract
The present invention provides a kind of driving method, device and display devices, are related to field of display technology.The signal for the touch control electrode on touch panel that the present invention is read according to read module, adjust the load model of TDDI chip, when TDDI chip attaches most importance to load model, drive module is controlled according to the first clock signal, and the display duration of row pixel every in display panel is adjusted to the first display duration, when TDDI chip is light load mode, drive module is controlled according to second clock signal, and the display duration of row pixel every in display panel is adjusted to the second display duration, second display duration is greater than the first display duration, so that TDDI chip is under light load mode, display duration for the distribution of each frame image is improved, reduce the touch-control duration for the distribution of each frame image, so that being not in the free time in the touch-control time；And make the charge and discharge of every row pixel more abundant, improve the display effect of touch control display apparatus.
Description
Technical field
The present invention relates to field of display technology, more particularly to a kind of driving method, device and display device.
Background technique
With the continuous development of display technology, touch control display apparatus is widely used, in general, touch control display apparatus
In touch panel and display panel, respectively by two chips independent control, in order to improve the integrated level of touch control display apparatus,
TDDI (Touch and Display Driver Integration, touch-control and display driving are integrated) chip comes into being.
TDDI chip is integrated in the function of touch chip and display chip in single chip, and TDDI chip usually has
Two kinds of load models, i.e. heavy duty mode and light load mode, the data volume of touching signals to be treated under heavy duty mode
It is larger, and the data volume of touching signals to be treated is smaller under light load mode, under two kinds of load models, TDDI chip is
Each frame image is assigned with fixed display duration and touch-control duration.
But since TDDI chip is under light load mode, the data volume of touching signals to be treated is smaller, cause for
The touch-control duration of each frame image distribution is longer, so that will appear the free time in the touch-control time.
Summary of the invention
The present invention provides a kind of driving method, device and display device, to solve existing TDDI chip in gently load mould
Under formula, the touch-control duration for the distribution of each frame image is longer, so that will appear idle problem in the touch-control period.
To solve the above-mentioned problems, the invention discloses a kind of driving methods, are applied to touch control display apparatus, the touch-control
Display device includes touch-control display panel and the TDDI chip connecting with the touch-control display panel, the touch-control display panel
Including display panel and touch panel, the display panel includes multiple pixels of array arrangement, and the touch panel includes battle array
Multiple touch control electrodes of arrangement are arranged, the TDDI chip includes drive module and read module；The described method includes:
The signal of the touch control electrode on the touch panel read according to the read module adjusts the TDDI core
The load model of piece；
When the load model of the TDDI chip is adjusted to heavy duty mode, controlling the drive module will be described aobvious
Show that the display duration of every row pixel in panel is adjusted to the first display duration；
When the load model of the TDDI chip is adjusted to light load mode, controlling the drive module will be described aobvious
Show that the display duration of every row pixel in panel is adjusted to the second display duration；The first display duration is less than second display
Duration.
Optionally, the signal of the touch control electrode on the touch panel read according to the read module is adjusted
The step of load model of the whole TDDI chip, comprising:
When the TDDI chip is in heavy duty mode, and detect the institute that the read module is read in preset duration
When stating the signal of the touch control electrode on touch panel and not changing, the load model of the TDDI chip is adjusted to gently to load
Mode；
When the TDDI chip is in light load mode, and detect the touch panel that the read module is read
On the signal of touch control electrode when changing, the load model of the TDDI chip is adjusted to heavy duty mode.
Optionally, the touch control display apparatus further includes frequency division module, the load model quilt when the TDDI chip
When being adjusted to heavy duty mode, the drive module is controlled by the display duration of row pixel every in the display panel and is adjusted to
The step of one display duration, comprising:
When the load model of the TDDI chip is adjusted to heavy duty mode, the first frequency dividing ratio is obtained；
Obtain the target clock signal with target frequency；
According to first frequency dividing ratio control the frequency division module to the target clock signal with target frequency into
Row frequency dividing, obtains first clock signal with first frequency；
When controlling display of the drive module by row pixel every in the display panel according to first clock signal
Length is adjusted to the first display duration.
Optionally, the touch control display apparatus further includes frequency division module, the load model quilt when the TDDI chip
When being adjusted to light load mode, the drive module is controlled by the display duration of row pixel every in the display panel and is adjusted to
The step of two display durations, comprising:
When the load model of the TDDI chip is adjusted to light load mode, the second frequency dividing ratio is obtained；
Obtain the target clock signal with target frequency；
According to second frequency dividing ratio control the frequency division module to the target clock signal with target frequency into
Row frequency dividing, obtains the second clock signal with second frequency；
When controlling display of the drive module by row pixel every in the display panel according to the second clock signal
Length is adjusted to the second display duration.
Optionally, the touch control display apparatus further includes spread spectrum module, in the target obtained with target frequency
Before the step of clock signal, further includes:
Reference clock signal is input to the spread spectrum module, output obtains the target clock signal with target frequency.
Optionally, the spread spectrum module includes sequentially connected phaselocked loop, counter and gate, described by reference clock
The step of signal is input to the spread spectrum module, and output obtains the target clock signal with target frequency, comprising:
Reference clock signal is input in the phaselocked loop, output obtains the specified clock signal with assigned frequency；
By the specified clock signal input with assigned frequency into the counter, output obtains multiple with finger
Determine the clock signal of frequency；There are phase differences between the multiple clock signal with assigned frequency；
According to preset control word, corresponding clock successively is chosen from the multiple clock signal with assigned frequency
Signal is input in the gate, and output obtains the target clock signal with target frequency.
Optionally, the signal of the touch control electrode on the touch panel read according to the read module,
After the step of adjusting the load model of the TDDI chip, further includes:
When the load model of the TDDI chip is adjusted to heavy duty mode, controls the read module and be successively read
The signal of each touch control electrode on the touch panel；
When the load model of the TDDI chip is adjusted to light load mode, the read module is controlled to the touching
The signal of the touch control electrode of every a line or each column on control panel merges, and reads the signal after merging.
To solve the above-mentioned problems, the invention also discloses a kind of driving devices, are applied to touch control display apparatus, the touching
Controlling display device includes touch-control display panel and the TDDI chip connecting with the touch-control display panel, the touch-control display surface
Plate includes display panel and touch panel, and the display panel includes multiple pixels of array arrangement, and the touch panel includes
Multiple touch control electrodes of array arrangement, the TDDI chip includes drive module and read module；The driving device includes:
Load model adjusts module, the touch-control being configured as on the touch panel read according to the read module
The signal of electrode adjusts the load model of the TDDI chip；
First display duration adjusts module, is configured as being adjusted to heavy duty mould when the load model of the TDDI chip
When formula, the drive module is controlled by the display duration of row pixel every in the display panel and is adjusted to the first display duration；
Second display duration adjusts module, is configured as being adjusted to gently load mould when the load model of the TDDI chip
When formula, the drive module is controlled by the display duration of row pixel every in the display panel and is adjusted to the second display duration；Institute
It states the first display duration and is less than the second display duration.
Optionally, the load model adjusts module, comprising:
Light load mode adjusting submodule is configured as being in heavy duty mode when the TDDI chip, and detects pre-
It, will be described if the signal of the touch control electrode on the touch panel that the read module is read in duration does not change
The load model of TDDI chip is adjusted to light load mode；
Heavy duty mode adjustment submodule is configured as being in light load mode when the TDDI chip, and detects institute
When stating the signal of the touch control electrode on the touch panel that read module is read and changing, by the negative of the TDDI chip
Mode adjustment is carried to attach most importance to load model.
Optionally, the touch control display apparatus further includes frequency division module, and the first display duration adjusts module, comprising:
First frequency dividing ratio acquisition submodule is configured as being adjusted to heavy duty mould when the load model of the TDDI chip
When formula, the first frequency dividing ratio is obtained；
Target clock signal acquisition submodule is configured as obtaining the target clock signal with target frequency；
First frequency dividing submodule is configured as controlling the frequency division module according to first frequency dividing ratio to described with mesh
The target clock signal of mark frequency is divided, and first clock signal with first frequency is obtained；
First display duration adjusting submodule, being configured as will according to first clock signal control drive module
The display duration of every row pixel is adjusted to the first display duration in the display panel.
Optionally, the touch control display apparatus further includes frequency division module, and the second display duration adjusts module, comprising:
Second frequency dividing ratio acquisition submodule is configured as being adjusted to gently load mould when the load model of the TDDI chip
When formula, the second frequency dividing ratio is obtained；
Target clock signal acquisition submodule is configured as obtaining the target clock signal with target frequency；
Second frequency dividing submodule is configured as controlling the frequency division module according to second frequency dividing ratio to described with mesh
The target clock signal of mark frequency is divided, and the second clock signal with second frequency is obtained；
Second display duration adjusting submodule, being configured as will according to the second clock signal control drive module
The display duration of every row pixel is adjusted to the second display duration in the display panel.
Optionally, the touch control display apparatus further includes spread spectrum module, the driving device further include:
Target clock signal output module is configured as reference clock signal being input to the spread spectrum module, export
To the target clock signal with target frequency.
Optionally, the spread spectrum module includes sequentially connected phaselocked loop, counter and gate, the target clock letter
Number output module, comprising:
Reference clock signal input submodule is configured as reference clock signal being input in the phaselocked loop, output
Obtain the specified clock signal with assigned frequency；
Specified clock signal input submodule, is configured as the specified clock signal input with assigned frequency extremely
In the counter, output obtains multiple clock signals with assigned frequency；The multiple clock letter with assigned frequency
There are phase differences between number；
Target clock signal output sub-module is configured as according to preset control word, successively has finger from the multiple
Determine to choose corresponding clock signal input in the clock signal of frequency into the gate, output obtains having target frequency
Target clock signal.
Optionally, the driving device further include:
First signal reading module is configured as being adjusted to heavy duty mode when the load model of the TDDI chip
When, control the signal for each touch control electrode that the read module is successively read on the touch panel；
Second signal read module is configured as being adjusted to light load mode when the load model of the TDDI chip
When, it controls the read module and the signal of the touch control electrode of every a line or each column on the touch panel is merged,
And read the signal after merging.
To solve the above-mentioned problems, the invention also discloses a kind of touch control display apparatus, including above-mentioned driving device.
Compared with prior art, the present invention includes the following advantages:
The signal of the touch control electrode on touch panel read according to read module adjusts the load mould of TDDI chip
Formula controls drive module for row pixel every in display panel when the load model of TDDI chip is adjusted to heavy duty mode
Display duration be adjusted to the first display duration, when the load model of TDDI chip is adjusted to light load mode, control drive
The display duration of row pixel every in display panel is adjusted to the second display duration by dynamic model block, and the first display duration is aobvious less than second
Show duration.When TDDI chip is light load mode, the display duration of row pixel every in display panel is improved to the second display
Duration, so that TDDI chip, under light load mode, the display duration for the distribution of each frame image is improved, due to every
The total duration of one frame image is constant, so that the touch-control duration for the distribution of each frame image is reduced, so that will not in the touch-control time
Occur idle；And since the display duration of every row pixel in the display time is improved, so that the charge and discharge of every row pixel are more filled
Point, improve the display effect of touch control display apparatus.
Detailed description of the invention
Fig. 1 shows a kind of flow chart of driving method of the embodiment of the present invention；
The schematic diagram of the display duration and touch-control duration that Fig. 2 shows the embodiment of the present invention under heavy duty mode；
Fig. 3 shows the schematic diagram of display duration and touch-control duration of the embodiment of the present invention under light load mode；
Fig. 4 shows a kind of specific flow chart of driving method of the embodiment of the present invention；
Fig. 5 shows the schematic diagram of spread spectrum module in the embodiment of the present invention；
Fig. 6 shows the signal for each touch control electrode that the embodiment of the present invention is read under heavy duty mode on touch panel
Schematic diagram；
The embodiment of the present invention that Fig. 7 shows reads showing for the signal of the touch control electrode on touch panel under light load mode
It is intended to；
Fig. 8 shows a kind of structural block diagram of driving device of the embodiment of the present invention；
Fig. 9 shows a kind of specific block diagram of driving device of the embodiment of the present invention.
Specific embodiment
In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, with reference to the accompanying drawing and specific real
Applying mode, the present invention is described in further detail.
The embodiment of the present invention is mainly used in touch control display apparatus, touch control display apparatus include touch-control display panel and with
The TDDI chip of touch-control display panel connection, touch-control display panel includes display panel and touch panel, and display panel includes battle array
Multiple pixels of arrangement are arranged, touch panel includes multiple touch control electrodes of array arrangement, and TDDI chip includes drive module and reading
Modulus block.
Wherein, the drive module in TDDI chip is for driving display panel to be shown, the reading mould in TDDI chip
Block is used to read the signal of the touch control electrode on touch panel, to identify whether user carries out touch-control to touch control display apparatus, with
And the specific location of user's touch-control.
Embodiment one
Referring to Fig.1, a kind of flow chart of driving method of the embodiment of the present invention is shown, can specifically include following step
It is rapid:
Step 101, the signal of the touch control electrode on the touch panel read according to the read module adjusts institute
State the load model of TDDI chip.
In embodiments of the present invention, the read module in TDDI chip reads the signal of the touch control electrode on touch panel,
According to the signal of the touch control electrode on the touch panel read, the load model of TDDI chip is adjusted.
Wherein, there are two types of the load models of TDDI chip, respectively heavy duty mode and light load mode；Heavy duty mode
Mode when referring to simultaneously using display panel and touch panel, light load mode refer to using display panel, but do not make
Mode when with touch panel.
For example, user, which touches touch control display apparatus, refreshes webpage, display panel and touch panel are needed while using, this
When, heavy duty mode can be set by the load model of TDDI chip；User watches video using touch control display apparatus, most of
Time only watches display content, does not need substantially to touch touch control display apparatus, at this point it is possible to by the load mould of TDDI chip
Formula is set as light load mode.
Step 102, when the load model of the TDDI chip is adjusted to heavy duty mode, the drive module is controlled
The display duration of row pixel every in the display panel is adjusted to the first display duration.
In embodiments of the present invention, when the load model of TDDI chip is adjusted to heavy duty mode, to drive module
Send the first clock signal, drive module according to the first clock signal successively control the display panel in every row pixel charge and discharge,
So that every row pixel is successively shown in display panel, and the display duration of row pixel every in display panel is adjusted to first
Show duration.
Wherein, the first display duration refers to: TDDI chip is under heavy duty mode, and every row pixel is aobvious in a frame image
Show duration, and the display duration of a frame image is equal to N times of the first display duration, N is the positive number greater than 1, the specific value root of N
It is determined according to the specific driving method of drive module and number of lines of pixels of display panel etc..
As shown in Fig. 2, TDDI chip is under heavy duty mode, for the distribution of each frame image display when a length of T1, be every
A length of T2 when the touch-control of one frame image distribution, a length of t1 when the first display of every row pixel in each frame image.
Wherein, VSYNC is a pulse signal, and after the completion of frame image display, i.e., every row pixel has all been shown
Cheng Hou has a VSYNC signal, for triggering the display that display panel carries out next frame image；BP indicates that VSYNC signal is defeated
Enter the duration before showing afterwards with the first row pixel in display panel, BNK indicates that the last line pixel in display panel is shown
Afterwards with read touch control electrode signal before duration, FP indicate read complete touch panel on all touch control electrodes signal after
With the duration before the input of next VSYNC signal, BP, BNK and FP can be understood as the duration of buffer stage, this stage does not control
Touch-control display panel executes corresponding operation.
Step 103, when the load model of the TDDI chip is adjusted to light load mode, the drive module is controlled
The display duration of row pixel every in the display panel is adjusted to the second display duration；The first display duration is less than described
Second display duration.
In embodiments of the present invention, when the load model of TDDI chip is adjusted to light load mode, to driving chip
Send second clock signal, drive module according to second clock signal successively control the display panel in every row pixel charge and discharge,
So that every row pixel is successively shown in display panel, and the display duration of row pixel every in display panel is adjusted to second
Show duration.
Wherein, frequency of the frequency of second clock signal less than the first clock signal；Second display duration refers to: TDDI
Chip is under light load mode, the display duration of every row pixel in a frame image, and the display duration of a frame image is equal to second
Show N times of duration, N is the positive number greater than 1, and the specific value of N is according to the specific driving method and display surface of drive module
The number of lines of pixels etc. of plate is determined.
As shown in figure 3, TDDI chip is under light load mode, for the distribution of each frame image display when a length of T3, be every
A length of T4 when the touch-control of one frame image distribution, a length of t3 when the second display of every row pixel in each frame image.
Wherein, the second display duration t3 of every row pixel is greater than under heavy duty mode in each frame image under light load mode
The first display duration t1 of every row pixel, so that the charge and discharge of every row pixel are more abundant, and gently to load in each frame image
The display duration T3 of each frame image is greater than the display duration T1 of each frame image under heavy duty mode, light load mode under mode
Under each frame image touch-control duration T4 be less than heavy duty mode under each frame image touch-control duration T2 so that in the touch-control time
It is not in the free time.
In embodiments of the present invention, the signal of the touch control electrode on touch panel read according to read module, adjustment
The load model of TDDI chip, when the load model of TDDI chip is adjusted to heavy duty mode, control drive module will be shown
Show that the display duration of every row pixel in panel is adjusted to the first display duration, when the load model of TDDI chip is adjusted to gently bear
When load mode, the display duration of row pixel every in display panel is adjusted to the second display duration by control drive module, and first is aobvious
Show duration less than the second display duration.When TDDI chip is light load mode, when by the display of row pixel every in display panel
It is long to improve to the second display duration, so that when TDDI chip under light load mode, is the display of each frame image distribution
Length is improved, and since the total duration of each frame image is constant, to reduce the touch-control duration for the distribution of each frame image, is made
Obtaining in the touch-control time is not in the free time；And since the display duration of every row pixel in the display time is improved, so that every row
The charge and discharge of pixel are more abundant, improve the display effect of touch control display apparatus.
Embodiment two
Referring to Fig. 4, a kind of specific flow chart of driving method of the embodiment of the present invention is shown, can specifically include as follows
Step:
Step 401, when the TDDI chip is in heavy duty mode, and detect that the read module is read in preset duration
When the signal for the touch control electrode on the touch panel got does not change, the load model of the TDDI chip is adjusted
For light load mode.
In embodiments of the present invention, when TDDI chip is in heavy duty mode, control read module reads touch panel
On touch control electrode signal, when the letter for detecting the touch control electrode on the touch panel that read module is read in preset duration
When number not changing, the load model of TDDI chip is adjusted to light load mode.
It should be noted that preset duration can be manually set, such as 1s, 10s；Read module is read in preset duration
The signal of touch control electrode on touch panel, which does not change, to be referred to: the signal pair of the touch control electrode read in preset duration
The current value or voltage value answered are equal.
When the load model of TDDI chip is adjusted to light load mode, step 408 is executed to step 411.
Step 402, when the TDDI chip is in light load mode, and detect that the read module is read described
When the signal of touch control electrode on touch panel changes, the load model of the TDDI chip is adjusted to heavy duty mould
Formula.
In embodiments of the present invention, when TDDI chip is in light load mode, control read module reads touch panel
On touch control electrode signal, when the signal for detecting the touch control electrode on the touch panel that read module is read changes
When, the load model of TDDI chip is adjusted to heavy duty mode.
The finger it should be noted that signal of the touch control electrode on the touch panel that read module is read changes
It is: the corresponding current value of the signal of the touch control electrode currently read or voltage value, with the preceding touch control electrode once read
The corresponding current value of signal or voltage value are unequal.
When the load model of TDDI chip is adjusted to heavy duty mode, step 404 is executed to step 407.
Step 403, reference clock signal is input to the spread spectrum module, when output obtains the target with target frequency
Clock signal.
In embodiments of the present invention, touch control display apparatus further includes spread spectrum module, and spread spectrum module can believe reference clock
Number it is converted into the clock signal of different frequency, and the clock signal of different frequency that spread spectrum module is converted to, frequency are big
In the frequency of reference clock signal.
Reference clock signal is the clock signal that crystal oscillator directly exports, and reference clock signal is input to spread spectrum module, defeated
The target clock signal with target frequency for meeting demand is obtained out；Wherein, the target frequency of target clock signal is greater than ginseng
Examine the frequency of clock signal.
As shown in figure 5, specifically, spread spectrum module includes sequentially connected phaselocked loop 51, counter 52 and gate 53, step
Rapid 403 specifically include: reference clock signal being input in the phaselocked loop, output obtains the specified clock with assigned frequency
Signal；By the specified clock signal input with assigned frequency into the counter, output obtains multiple with specified
The clock signal of frequency；There are phase differences between the multiple clock signal with assigned frequency；According to preset control word,
Corresponding clock signal input is successively chosen from the multiple clock signal with assigned frequency into the gate, it is defeated
The target clock signal with target frequency is obtained out.
Wherein, phaselocked loop 51 includes sequentially connected phase discriminator 511, filter 512 and oscillator 513, and phase discriminator 511 is used
Carry out the phase difference between the clock signal that comparison reference clock signal clk in and oscillator 513 are fed back, is produced according to phase difference
A raw voltage, and export to filter 512, filter 512 carries out High frequency filter to the voltage that phase discriminator 511 exports, and will
For filtered voltage output to oscillator 513, filtered voltage can control the output of oscillator 513 to obtain having assigned frequency
Specified clock signal.
Counter 12 is to indicate 2 using m triggersmThe counter of a state, when by specified with assigned frequency
Clock signal is input in counter 12, output obtains multiple clock signals with assigned frequency, multiple to have assigned frequency
There are phase differences between clock signal.
For example, counter 12 is the counter for indicating 4 states using 2 triggers, then output, which obtains 4 kinds, has finger
Determine the clock signal of frequency, there are phase difference between this 4 kinds clock signals with assigned frequency, phase difference is equal to period/4
Integral multiple.
Gate 53 includes adder 531, accumulator 532, the first gating switch 533, the second gating switch 534, third
Gating switch 535 and trigger 536, F indicate preset control word.
According to preset control word F, controlling the first gating switch 533 and the second gating switch 534 successively has from multiple
Corresponding clock signal is chosen in the clock signal of assigned frequency, and is exported to third gating switch 535, third gating switch
535 are controlled by trigger 536, and under the control of trigger 536, third gating switch 535 is to the first gating switch 533 and second
The clock signal that gating switch 534 exports is chosen again, obtains the target clock signal CLKout with target frequency.
The clock letter for being the clock signal of the second gating switch 534 output when what third gating switch 535 was chosen, and exporting
When number being high level, then trigger 536 controls third gating switch 535 and is chosen next time, and what is chosen next time is the
The clock signal of one gating switch 533 output；When third gating switch 535 choose be the second gating switch 534 output when
Clock signal, and export clock signal be low level when, continue to output the second gating switch 534 output clock signal.
The clock letter for being the clock signal of the first gating switch 533 output when what third gating switch 535 was chosen, and exporting
When number being high level, then trigger 536 controls third gating switch 535 and is chosen next time, and what is chosen next time is the
The clock signal of two gating switches 534 output；When third gating switch 535 choose be the first gating switch 533 output when
Clock signal, and export clock signal be low level when, continue to output the first gating switch 533 output clock signal.
Adder 531 is the control word by the sum of F/2 and last accumulator 533 cumulative value as this, accumulator
533 be the control word by the sum of F and last accumulator 533 cumulative value as this.
For example, counter 12, which exports, obtains 4 kinds of clock signals with assigned frequency, this 4 kinds with assigned frequency when
There are phase difference between clock signal, phase difference is equal to the integral multiple of period/4, the specified clock signal that phaselocked loop 51 is exported
Labeled as 0, specifying the phase difference of clock signal with this is that the clock signal of period/4 is labeled as 1, specifies clock signal with this
Phase difference is that the clock signal of period/2 is labeled as 2, and specifying the phase difference of clock signal with this is the clock signal mark in period 3/4
3 are denoted as, and so on；Preset control word F is 3, then first the second gating switch of secondary control, 534 output token be 0 it is specified
Clock signal；When specified clock signal labeled as 0 is high level, trigger 536 controls third gating switch 535 and chooses first
The clock signal that gating switch 533 exports, at this point, the selection of the first gating switch 533 is the clock signal for being labeled as 1；Work as mark
When the clock signal for being denoted as 1 is high level, trigger 536 controls third gating switch 535 and chooses the output of the second gating switch 534
Clock signal, at this point, the second gating switch 534 output clock signal be labeled as 3 clock signal, and so on, according to
It is secondary pass through clock signal that 533 output token of the first gating switch is 4, by 534 output token of the second gating switch be 6 when
Clock signal etc. finally obtains the target clock signal with target frequency.
It should be noted that directly remainder is ignored when F/2 is not positive integer, using obtained positive integer as F/2.
Step 404, when the load model of the TDDI chip is adjusted to heavy duty mode, the first frequency dividing ratio is obtained.
In embodiments of the present invention, touch control display apparatus further includes frequency division module, and frequency division module can be incited somebody to action by frequency dividing ratio
The frequency of target clock signal reduces, and when frequency dividing ratio is L, the target clock signal inputted to frequency division module is every by L week
Phase, frequency division module export a cycle signal, so that the frequency of the clock signal of frequency division module output is reduced to target clock to believe
Number frequency 1/L.
For example, frequency dividing ratio is 2, the target clock signal inputted to frequency division module, every to pass through two periods, frequency division module is defeated
A cycle signal out, so that the frequency of the clock signal of frequency division module output is reduced to the one of the frequency of target clock signal
Half.
When the load model of TDDI chip is adjusted to heavy duty mode, the first frequency dividing ratio is obtained, the first frequency dividing ratio can
It is obtained according to test.
Step 405, the target clock signal with target frequency is obtained.
In embodiments of the present invention, the target clock signal with target frequency, i.e. spread spectrum mould in obtaining step 403 are obtained
The target clock signal with target frequency of block output.
Step 406, when controlling the frequency division module to the target with target frequency according to first frequency dividing ratio
Clock signal is divided, and first clock signal with first frequency is obtained.
In embodiments of the present invention, frequency division module is controlled according to the first frequency dividing ratio to believe the target clock with target frequency
It number is divided, obtains first clock signal with first frequency.
For example, the first frequency dividing ratio is L1, then the first frequency of the first clock signal is the target frequency of target clock signal
1/L1。
Step 407, the drive module is controlled for row pixel every in the display panel according to first clock signal
Display duration be adjusted to the first display duration.
In embodiments of the present invention, first clock signal with first frequency, drive module root are sent to drive module
According to the first clock signal with first frequency successively control the display panel in every row pixel charge and discharge so that in display panel
Every row pixel is successively shown, and the display duration of row pixel every in display panel is adjusted to the first display duration.
Step 408, when the load model of the TDDI chip is adjusted to light load mode, the second frequency dividing ratio is obtained.
In embodiments of the present invention, when the load model of TDDI chip is adjusted to light load mode, second point is obtained
Frequency ratio, the second frequency dividing ratio can be obtained according to test；Wherein, the second frequency dividing ratio is greater than the first frequency dividing ratio.
Step 409, the target clock signal with target frequency is obtained.
In embodiments of the present invention, the target clock signal with target frequency, i.e. spread spectrum mould in obtaining step 403 are obtained
The target clock signal with target frequency of block output.
Step 410, when controlling the frequency division module to the target with target frequency according to second frequency dividing ratio
Clock signal is divided, and the second clock signal with second frequency is obtained.
In embodiments of the present invention, frequency division module is controlled according to the second frequency dividing ratio to believe the target clock with target frequency
It number is divided, obtains the second clock signal with second frequency.
Since the second frequency dividing ratio is greater than the first frequency dividing ratio, then the second frequency of second clock signal is less than the first clock signal
First frequency.
For example, the second frequency dividing ratio is L2, then the second frequency of second clock signal is the target frequency of target clock signal
1/L2。
Step 411, the drive module is controlled for row pixel every in the display panel according to the second clock signal
Display duration be adjusted to the second display duration.
In embodiments of the present invention, the second clock signal with second frequency, drive module root are sent to drive module
According to the second clock signal with second frequency successively control the display panel in every row pixel charge and discharge so that in display panel
Every row pixel is successively shown, and the display duration of row pixel every in display panel is adjusted to the second display duration.
Due to second clock signal second frequency less than the first clock signal first frequency, when TDDI chip is light negative
When load mode, relative to heavy duty mode, it is smaller to control the clock signal bring power consumption that drive module is shown, and can be with
Improve EMI (Electro Magnetic Interference, electromagnetic interference).
After step 402, following steps are also executed:
Step A1: when the load model of the TDDI chip is adjusted to heavy duty mode, the read module is controlled
It is successively read the signal of each touch control electrode on the touch panel.
When the load model of TDDI chip is adjusted to heavy duty mode, control read module is successively read touch panel
On each touch control electrode signal, to detect the position of user's touch-control.
Referring to Fig. 6, shows the embodiment of the present invention and read each touch control electrode on touch panel under heavy duty mode
Signal schematic diagram.
Wherein, 61 be TDDI chip, and 62 be touch-control display panel, and 621 is on the touch panels in touch-control display panel
Touch control electrode is successively read each on touch panel when the load model of TDDI chip 61 is adjusted to heavy duty mode
The signal of touch control electrode 621, at this point, the corresponding data volume of the signal of the touch control electrode 621 read is larger, therefore, it is necessary to compared with
Long touch-control duration.
After step 401, following steps are also executed:
Step A2: when the load model of the TDDI chip is adjusted to light load mode, the read module is controlled
The signal of the touch control electrode of every a line or each column on the touch panel is merged, and reads the signal after merging.
When the load model of TDDI chip is adjusted to light load mode, read module is controlled to every on touch panel
The signal of a line or the touch control electrode of each column merges, then, read merge after signal, with detect user whether touch-control
Touch control display apparatus.
Referring to Fig. 7, the letter for the touch control electrode that the embodiment of the present invention is read under light load mode on touch panel is shown
Number schematic diagram.
When the load model of TDDI chip 61 is adjusted to light load mode, due under light load mode, Yong Huwei
Therefore touch-control touch control display apparatus closes the signal of the touch control electrode 621 of every a line or each column on touch panel
And then, the signal after merging is read, at this point, the data volume of the signal after the merging read is smaller, therefore, it is necessary to shorter
Touch-control duration.
TDDI chip is under heavy duty mode, the normal signal for handling touch control electrode, TDDI chip under light load mode,
The extra time is used to show by the time for shortening the signal of processing touch control electrode, and two kinds of load moulds of TDDI chip
Formula can be with free switching, and in switching, display panel, touch panel and TDDI chip are worked normally, and does not influence touch-control display dress
The display set and touch function.
It should be noted that Fig. 6 and touch panel shown in Fig. 7 are the touch panel of self-capacitance mode, and the present invention is real
The touch panel that the touch panel in example refers only to self-capacitance mode is applied, in the non-touch-control of user, the signal of touch control electrode 621
The variable quantity of corresponding voltage value or current value is 0, when user carries out touch control operation, shape between user and touch control electrode 621
At coupled capacitor, so that the variable quantity of the corresponding voltage value of the signal of touch control electrode 621 or current value is not 0.
In embodiments of the present invention, when TDDI chip attaches most importance to load model, driving mould is controlled according to the first clock signal
The display duration of row pixel every in display panel is adjusted to the first display duration by block, when TDDI chip is light load mode,
Drive module is controlled according to second clock signal, and the display duration of row pixel every in display panel is adjusted to the second display duration,
Second display duration is greater than the first display duration, so that TDDI chip under light load mode, distributes for each frame image
Display duration be improved, since the total duration of each frame image is constant, thus reduce for each frame image distribution touching
Duration is controlled, so that being not in the free time in the touch-control time；And since the display duration of every row pixel in the display time is improved,
So that the charge and discharge of every row pixel are more abundant, the display effect of touch control display apparatus is improved；In addition, the of second clock signal
Two frequencies, relative to heavy duty mode, are controlled less than the first frequency of the first clock signal when TDDI chip is light load mode
The clock signal bring power consumption that drive module processed is shown is smaller, and can improve EMI.
Embodiment three
Referring to Fig. 8, a kind of structural block diagram of driving device of the embodiment of the present invention is shown.
The driving device 800 of the embodiment of the present invention is applied to touch control display apparatus, and the touch control display apparatus includes touch-control
Display panel and the TDDI chip connecting with the touch-control display panel, the touch-control display panel include display panel and touching
Panel is controlled, the display panel includes multiple pixels of array arrangement, and the touch panel includes multiple touch-controls of array arrangement
Electrode, the TDDI chip includes drive module and read module；The driving device 800 includes:
Load model adjusts module 801, is configured as on the touch panel read according to the read module
The signal of touch control electrode adjusts the load model of the TDDI chip；
First display duration adjusts module 802, is configured as being adjusted to heavy burden when the load model of the TDDI chip
When load mode, when controlling the drive module display duration of row pixel every in the display panel being adjusted to the first display
It is long；
Second display duration adjusts module 803, is configured as being adjusted to gently bear when the load model of the TDDI chip
When load mode, when controlling the drive module display duration of row pixel every in the display panel being adjusted to the second display
It is long；The first display duration is less than the second display duration.
Referring to Fig. 9, a kind of specific block diagram of driving device of the embodiment of the present invention is shown.
On the basis of Fig. 8, optionally, the load model adjusts module 801, comprising:
Light load mode adjusting submodule 8011 is configured as being in heavy duty mode when the TDDI chip, and detects
It, will when the signal for the touch control electrode on the touch panel that the read module is read in preset duration does not change
The load model of the TDDI chip is adjusted to light load mode；
Heavy duty mode adjustment submodule 8012 is configured as being in light load mode when the TDDI chip, and detects
When the signal of the touch control electrode on the touch panel read to the read module changes, by the TDDI chip
Load model be adjusted to heavy duty mode.
Optionally, the touch control display apparatus further includes frequency division module, and the first display duration adjusts module 802, packet
It includes:
First frequency dividing ratio acquisition submodule 8021 is configured as being adjusted to heavy burden when the load model of the TDDI chip
When load mode, the first frequency dividing ratio is obtained；
Target clock signal acquisition submodule 8022 is configured as obtaining the target clock signal with target frequency；
First frequency dividing submodule 8023 is configured as controlling the frequency division module to the tool according to first frequency dividing ratio
There is the target clock signal of target frequency to be divided, obtains first clock signal with first frequency；
First display duration adjusting submodule 8024, is configured as controlling the driving mould according to first clock signal
The display duration of row pixel every in the display panel is adjusted to the first display duration by block.
Optionally, the touch control display apparatus further includes frequency division module, and the second display duration adjusts module 803, packet
It includes:
Second frequency dividing ratio acquisition submodule 8031 is configured as being adjusted to gently bear when the load model of the TDDI chip
When load mode, the second frequency dividing ratio is obtained；
Target clock signal acquisition submodule 8032 is configured as obtaining the target clock signal with target frequency；
Second frequency dividing submodule 8033 is configured as controlling the frequency division module to the tool according to second frequency dividing ratio
There is the target clock signal of target frequency to be divided, obtains the second clock signal with second frequency；
Second display duration adjusting submodule 8034, is configured as controlling the driving mould according to the second clock signal
The display duration of row pixel every in the display panel is adjusted to the second display duration by block.
Optionally, the touch control display apparatus further includes spread spectrum module, the driving device 800 further include:
Target clock signal output module 804 is configured as reference clock signal being input to the spread spectrum module, output
Obtain the target clock signal with target frequency.
Optionally, the spread spectrum module includes sequentially connected phaselocked loop, counter and gate, the target clock letter
Number output module 804, comprising:
Reference clock signal input submodule 8041 is configured as reference clock signal being input in the phaselocked loop,
Output obtains the specified clock signal with assigned frequency；
Specified clock signal input submodule 8042, is configured as the specified clock signal with assigned frequency is defeated
Enter into the counter, output obtains multiple clock signals with assigned frequency；It is the multiple with assigned frequency when
There are phase differences between clock signal；
Target clock signal output sub-module 8043 is configured as according to preset control word, successively from the multiple tool
Have and choose corresponding clock signal input in the clock signal of assigned frequency into the gate, output is obtained with target frequency
The target clock signal of rate.
Optionally, the driving device 800 further include:
First signal reading module 805 is configured as being adjusted to heavy duty mould when the load model of the TDDI chip
When formula, the signal for each touch control electrode that the read module is successively read on the touch panel is controlled；
Second signal read module 806 is configured as being adjusted to gently load mould when the load model of the TDDI chip
When formula, controls the read module and the signal of the touch control electrode of every a line or each column on the touch panel is closed
And and read the signal after merging.
In embodiments of the present invention, the signal of the touch control electrode on touch panel read according to read module, adjustment
The load model of TDDI chip, when the load model of TDDI chip is adjusted to heavy duty mode, control drive module will be shown
Show that the display duration of every row pixel in panel is adjusted to the first display duration, when the load model of TDDI chip is adjusted to gently bear
When load mode, the display duration of row pixel every in display panel is adjusted to the second display duration by control drive module, and first is aobvious
Show duration less than the second display duration.When TDDI chip is light load mode, by the display duration of row pixel every in display panel
It improves to the second display duration, so that the display duration that TDDI chip under light load mode, distributes for each frame image
It is improved, since the total duration of each frame image is constant, so that the touch-control duration for the distribution of each frame image is reduced, so that
It is not in the free time in the touch-control time；And since the display duration of every row pixel in the display time is improved, so that every row picture
The charge and discharge of element are more abundant, improve the display effect of touch control display apparatus.
For device embodiment, since it is basically similar to the method embodiment, related so being described relatively simple
Place illustrates referring to the part of embodiment of the method.
Example IV
The embodiment of the invention also provides a kind of touch control display apparatus, including above-mentioned driving device.
The description of embodiment three is referred to about the specific descriptions of driving device, the embodiment of the present invention is no longer superfluous to this
It states.
In practical applications, touch control display apparatus can be with are as follows: mobile phone, tablet computer, display, laptop, navigation
Any products or components with touch display function such as instrument.
In embodiments of the present invention, the signal of the touch control electrode on touch panel read according to read module, adjustment
The load model of TDDI chip, when the load model of TDDI chip is adjusted to heavy duty mode, control drive module will be shown
Show that the display duration of every row pixel in panel is adjusted to the first display duration, when the load model of TDDI chip is adjusted to gently bear
When load mode, the display duration of row pixel every in display panel is adjusted to the second display duration by control drive module, and first is aobvious
Show duration less than the second display duration.When TDDI chip is light load mode, by the display duration of row pixel every in display panel
It improves to the second display duration, so that the display duration that TDDI chip under light load mode, distributes for each frame image
It is improved, since the total duration of each frame image is constant, so that the touch-control duration for the distribution of each frame image is reduced, so that
It is not in the free time in the touch-control time；And since the display duration of every row pixel in the display time is improved, so that every row picture
The charge and discharge of element are more abundant, improve the display effect of touch control display apparatus.
For the various method embodiments described above, for simple description, therefore, it is stated as a series of action combinations, but
Be those skilled in the art should understand that, the present invention is not limited by the sequence of acts described because according to the present invention, certain
A little steps can be performed in other orders or simultaneously.Secondly, those skilled in the art should also know that, it is retouched in specification
The embodiment stated belongs to preferred embodiment, and related actions and modules are not necessarily necessary for the present invention.
All the embodiments in this specification are described in a progressive manner, the highlights of each of the examples are with
The difference of other embodiments, the same or similar parts between the embodiments can be referred to each other.
Finally, it is to be noted that, herein, relational terms such as first and second and the like be used merely to by
One entity or operation are distinguished with another entity or operation, without necessarily requiring or implying these entities or operation
Between there are any actual relationship or orders.Moreover, the terms "include", "comprise" or its any other variant meaning
Covering non-exclusive inclusion, so that the process, method, commodity or the equipment that include a series of elements not only include that
A little elements, but also including other elements that are not explicitly listed, or further include for this process, method, commodity or
The intrinsic element of equipment.In the absence of more restrictions, the element limited by sentence "including a ...", is not arranged
Except there is also other identical elements in process, method, commodity or the equipment for including the element.
Above to a kind of driving method provided by the present invention, device and display device, it is described in detail, herein
Apply that a specific example illustrates the principle and implementation of the invention, the explanation of above example is only intended to help
Understand method and its core concept of the invention；At the same time, for those skilled in the art, according to the thought of the present invention,
There will be changes in the specific implementation manner and application range, in conclusion the content of the present specification should not be construed as to this
The limitation of invention.
Claims (10)
1. a kind of driving method, which is characterized in that be applied to touch control display apparatus, the touch control display apparatus includes that touch-control is shown
Panel and the TDDI chip connecting with the touch-control display panel, the touch-control display panel include display panel and touch surface
Plate, the display panel include multiple pixels of array arrangement, and the touch panel includes multiple touch control electrodes of array arrangement,
The TDDI chip includes drive module and read module；The described method includes:
The signal of the touch control electrode on the touch panel read according to the read module adjusts the TDDI chip
Load model；
When the load model of the TDDI chip is adjusted to heavy duty mode, the drive module is controlled by the display surface
The display duration of every row pixel is adjusted to the first display duration in plate；
When the load model of the TDDI chip is adjusted to light load mode, the drive module is controlled by the display surface
The display duration of every row pixel is adjusted to the second display duration in plate；When the first display duration is less than the described second display
It is long.
2. the method according to claim 1, wherein the touch-control read according to the read module
The signal of touch control electrode on panel, the step of adjusting the load model of the TDDI chip, comprising:
When the TDDI chip is in heavy duty mode, and detect the touching that the read module is read in preset duration
When touching the signal of the touch control electrode on panel and not changing, the load model of the TDDI chip is adjusted to gently to load mould
Formula；
When the TDDI chip is in light load mode, and detect on the touch panel that the read module is read
When the signal of touch control electrode changes, the load model of the TDDI chip is adjusted to heavy duty mode.
3. described the method according to claim 1, wherein the touch control display apparatus further includes frequency division module
When the load model of the TDDI chip is adjusted to heavy duty mode, controlling the drive module will be in the display panel
The step of display duration of every row pixel is adjusted to the first display duration, comprising:
When the load model of the TDDI chip is adjusted to heavy duty mode, the first frequency dividing ratio is obtained；
Obtain the target clock signal with target frequency；
The frequency division module is controlled according to first frequency dividing ratio to divide the target clock signal with target frequency
Frequently, first clock signal with first frequency is obtained；
Display duration tune of the drive module by row pixel every in the display panel is controlled according to first clock signal
Whole is the first display duration.
4. described the method according to claim 1, wherein the touch control display apparatus further includes frequency division module
When the load model of the TDDI chip is adjusted to light load mode, controlling the drive module will be in the display panel
The step of display duration of every row pixel is adjusted to the second display duration, comprising:
When the load model of the TDDI chip is adjusted to light load mode, the second frequency dividing ratio is obtained；
Obtain the target clock signal with target frequency；
The frequency division module is controlled according to second frequency dividing ratio to divide the target clock signal with target frequency
Frequently, the second clock signal with second frequency is obtained；
Display duration tune of the drive module by row pixel every in the display panel is controlled according to the second clock signal
Whole is the second display duration.
5. the method according to claim 3 or 4, which is characterized in that the touch control display apparatus further includes spread spectrum module,
The acquisition had before the step of target clock signal of target frequency, further includes:
Reference clock signal is input to the spread spectrum module, output obtains the target clock signal with target frequency.
6. according to the method described in claim 5, it is characterized in that, the spread spectrum module includes sequentially connected phaselocked loop, meter
Number device and gate, described that reference clock signal is input to the spread spectrum module, output obtains the target with target frequency
The step of clock signal, comprising:
Reference clock signal is input in the phaselocked loop, output obtains the specified clock signal with assigned frequency；
By the specified clock signal input with assigned frequency into the counter, output obtains multiple with specified frequency
The clock signal of rate；There are phase differences between the multiple clock signal with assigned frequency；
According to preset control word, corresponding clock signal successively is chosen from the multiple clock signal with assigned frequency
It is input in the gate, output obtains the target clock signal with target frequency.
7. the method according to claim 1, wherein in the touching read according to the read module
The signal of the touch control electrode on panel is controlled, after the step of adjusting the load model of the TDDI chip, further includes:
When the load model of the TDDI chip is adjusted to heavy duty mode, control the read module be successively read it is described
The signal of each touch control electrode on touch panel；
When the load model of the TDDI chip is adjusted to light load mode, the read module is controlled to the touch surface
The signal of the touch control electrode of every a line or each column on plate merges, and reads the signal after merging.
8. a kind of driving device, which is characterized in that be applied to touch control display apparatus, the touch control display apparatus includes that touch-control is shown
Panel and the TDDI chip connecting with the touch-control display panel, the touch-control display panel include display panel and touch surface
Plate, the display panel include multiple pixels of array arrangement, and the touch panel includes multiple touch control electrodes of array arrangement,
The TDDI chip includes drive module and read module；The driving device includes:
Load model adjusts module, the touch control electrode being configured as on the touch panel read according to the read module
Signal, adjust the load model of the TDDI chip；
First display duration adjusts module, is configured as being adjusted to heavy duty mode when the load model of the TDDI chip
When, the drive module, which is controlled, by the display duration of row pixel every in the display panel is adjusted to the first display duration；
Second display duration adjusts module, is configured as being adjusted to light load mode when the load model of the TDDI chip
When, the drive module, which is controlled, by the display duration of row pixel every in the display panel is adjusted to the second display duration；It is described
First display duration is less than the second display duration.
9. device according to claim 8, which is characterized in that the load model adjusts module, comprising:
Light load mode adjusting submodule is configured as being in heavy duty mode when the TDDI chip, and when detecting default
When the signal for the touch control electrode on the touch panel that the read module is read in long does not change, by the TDDI
The load model of chip is adjusted to light load mode；
Heavy duty mode adjustment submodule is configured as being in light load mode when the TDDI chip, and detects the reading
When the signal for the touch control electrode on the touch panel that modulus block is read changes, by the load mould of the TDDI chip
Formula is adjusted to heavy duty mode.
10. a kind of touch control display apparatus, which is characterized in that including driving device as claimed in claim 8 or 9.
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| CN112527144A (en) * | 2020-11-30 | 2021-03-19 | 厦门天马微电子有限公司 | Driving method of touch display device and touch display device |
| CN112527144B (en) * | 2020-11-30 | 2024-01-23 | 厦门天马微电子有限公司 | Driving method of touch display device and touch display device |
| CN112540701A (en) * | 2020-12-11 | 2021-03-23 | 联想(北京)有限公司 | Data processing method, electronic device and storage medium |
| TWI811977B (en) * | 2021-02-17 | 2023-08-11 | 奇景光電股份有限公司 | Driver circuit |
| CN112860125A (en) * | 2021-03-19 | 2021-05-28 | 京东方科技集团股份有限公司 | Touch display driving device and method and touch display device |
| CN112860125B (en) * | 2021-03-19 | 2024-04-16 | 京东方科技集团股份有限公司 | Touch display driving device and method and touch display device |
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|---|---|
| CN110221729B (en) | 2022-05-20 |
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