CN110147167A - Touch-control display driver circuit, computing circuit, display device and its operating method - Google Patents
Touch-control display driver circuit, computing circuit, display device and its operating method Download PDFInfo
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- CN110147167A CN110147167A CN201810140248.6A CN201810140248A CN110147167A CN 110147167 A CN110147167 A CN 110147167A CN 201810140248 A CN201810140248 A CN 201810140248A CN 110147167 A CN110147167 A CN 110147167A
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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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- General Physics & Mathematics (AREA)
- Position Input By Displaying (AREA)
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Abstract
The present invention discloses a kind of touch-control display driver circuit, computing circuit, display device and its operating method.Touch control display apparatus includes touch-control display driver circuit, touch-control computing circuit and processor.Touch-control computing circuit acquires the right of control in the normal mode, to obtain the touch sensing data about touch-control display panel from touch-control display driver circuit.Program code is supplied to touch-control display driver circuit by processor in burning mode, and is controlled touch-control display driver circuit and acquired the right of control, and program code is burned onto touch-control computing circuit by touch-control display driver circuit.
Description
Technical field
The present invention relates to a kind of touch control display apparatus, in particular to a kind of area that touch-control display driver chip can be improved makes
With the touch control display apparatus and its operating method of rate.
Background technique
In the application of embedded (in-cell) touch panel, it is integrated that touch panel would generally configure touch-control display driving
(Touch with Display Driver integration, TDDI) chip realizes the function of touch-control and display.Fig. 1 is
The circuit box schematic diagram of known touch control display apparatus.As shown in Figure 1, touch control display apparatus 100 is provided with TDDI chip 11
With touch-control display panel 12.In order to make touch-control display panel 12 reach the design effect of narrow frame, microcontroller (Micro
Control Unit, MCU) with the elements such as static random access memory (Static Random-Access Memory, SRAM)
Need to be set in TDDI chip 11 with the arrangement mode of sleeve configuration, will so increase the degree of difficulty of coiling, and make circuit around
Line area increases.In general, the area utilization rate of TDDI chip 11 may be defined as logic area area/(coiling area+logic area
Area).TDDI chip by MCU configuration in sleeve configuration will make traditional TDDI chip that lower area utilization rate be presented.
In view of this, the area utilization rate of TDDI chip can be improved it is necessary to provide a kind of touch control display apparatus, to reduce
The manufacturing cost of touch control display apparatus.
Summary of the invention
The present invention provides a kind of touch-control display driver circuit, touch-control computing circuit, touch control display apparatus and its operating method,
The area utilization rate of touch-control display driver circuit can be promoted.
The embodiment of the present invention provides a kind of touch control display apparatus, and the touch control display apparatus includes touch-control display driving electricity
Road, touch-control computing circuit and processor.Touch-control display driver circuit is for driving touch-control display panel.Touch-control computing circuit coupling
Contact control display driver circuit.Touch-control computing circuit acquires the right of control in the normal mode, to take from touch-control display driver circuit
Obtain the touch sensing data about touch-control display panel.Touch-control display driver circuit takes in burning (programming) mode
Control is obtained, program code is burned onto touch-control computing circuit.Processor couples touch-control display driver circuit to provide journey
Sequence code.Processor provides program code and gives touch-control display driver circuit, and control touch-control display driving under burning mode
Circuit acquires the right of control.
The embodiment of the present invention provides a kind of operating method of touch control display apparatus.The operation side of the touch control display apparatus
Method includes burning operation step and normal operation step.The burning operation step is to mention in burning mode by processor
It is acquired the right of control for program code to touch-control display driver circuit and control touch-control display driver circuit, to be shown by touch-control
Program code is burned onto touch-control computing circuit by driving circuit.The normal operation step is in the normal mode by touch-control
Display driver circuit drives touch-control display panel, is acquired the right of control to take from touch-control display driver circuit by touch-control computing circuit
Obtain the touch sensing data about touch-control display panel.
The embodiment of the present invention provides a kind of touch-control display driver circuit.The touch-control display driver circuit includes that display is driven
Dynamic circuit, touch control sensing circuit and control circuit.Display driver circuit is for driving touch-control display panel to show image.Touching
Control sensing circuit is for detecting the touch event on touch-control display panel and generating touch sensing data.Control circuit coupling is aobvious
Show driving circuit and touch control sensing circuit.In the normal mode, control circuit gives control to touch-control computing circuit, and notifies
Touch-control computing circuit is so that touch-control computing circuit obtains touch sensing data from touch-control display driver circuit.In burning mode,
Control circuit fetches control, and program code is burned onto touch-control computing circuit, and controls under resetting (reset) mode
Circuit processed resets touch-control computing circuit.
The embodiment of the present invention provides a kind of touch-control computing circuit.The touch-control computing circuit includes memory and micro-control
Device processed.Microcontroller is coupled to memory.In the normal mode, microcontroller acquires the right of control, to show driving electricity from touch-control
Road obtains the touch sensing data about touch-control display panel.Microcontroller is given back control to touch-control and is shown in burning mode
Driving circuit, so that program code is burned onto memory by touch-control display driver circuit.
Based on above-mentioned, touch control display apparatus described in all embodiments of the present invention and its operating method are by microcontroller and storage
Device is integrated in touch-control computing circuit, to save microcontroller and the memory occupied face in touch-control display driver circuit
Product, and then shorten the winding length in touch-control display driver circuit between each logic element, therefore can effectively promote touch-control display and drive
The area utilization rate of dynamic circuit.Meanwhile touch-control display driver circuit also provides the function of burning mode, it can be by the journey of touch-control algorithm
Sequence code is burned onto touch-control computing circuit.
To make the foregoing features and advantages of the present invention clearer and more comprehensible, special embodiment below, and it is detailed to cooperate attached drawing to make
Carefully it is described as follows.
Detailed description of the invention
Fig. 1 is circuit box (circuit block) schematic diagram of known touch control display apparatus.
Fig. 2 is the circuit box schematic diagram according to the touch control display apparatus of one embodiment of the invention.
Fig. 3 is the flow diagram according to the operating method of the touch control display apparatus of one embodiment of the invention.
Fig. 4 is the circuit box schematic diagram for illustrating touch control display apparatus shown in Fig. 2.
Fig. 5 is the signal sequence schematic diagram according to the different operation modes of one embodiment of the invention.
Fig. 6 is the flow diagram according to the switching operation modes of one embodiment of the invention.
[symbol description]
11:TDDI chip
12: touch-control display panel
21: touch-control display driver circuit
22: touch-control computing circuit
23: processor
24: touch-control display panel
100,200: touch control display apparatus
211: display driver circuit
212: touch control sensing circuit
213: control circuit
221: memory
222: microcontroller
2121: analog front circuit
2122: analog-to-digital conversion circuit
S10~S12, S20~S23: method and step
Int_1: the first interrupt signal
Int_2: the second interrupt signal
I2C: internal integrated circuit
Rst_n_1: the first reset signal
Rst_n_2: the second reset signal
Specific embodiment
" coupling (or connection) " word used in present specification full text (including claims) can refer to appoint
What direct or indirect connection means.For example, if it is described herein that first device coupling (or connection) is then answered in second device
This be construed as the first device can be connected directly between the second device or the first device can by other devices or
Certain connection means and be coupled indirectly to the second device.In addition, all possible places, use phase in the drawings and embodiments
Element/component/step with label represents same or like part.Identical label is used in different embodiments or uses identical use
Element/component/step of language can be with cross-referenced related description.
Fig. 2 is the circuit box schematic diagram according to the touch control display apparatus of one embodiment of the invention.As shown in Fig. 2, touching
Controlling display device 200 includes touch-control display driver circuit 21, touch-control computing circuit 22 and processor 23.Touch-control display driving electricity
Road 21 couples touch-control display panel 24, to drive touch-control display panel 24.Touch-control computing circuit 22 couples touch-control display driving
Circuit 21.Processor 23 couples touch-control display driver circuit 21.According to design requirement, touch control display apparatus 200 can be mobile phone,
Tablet computer, notebook computer or other portable electronic devices.In some embodiments, processor 23 can be use
With run operating system (Operation System, OS) central processing unit (Central Processing Unit,
) or the application processor of mobile phone (Application Processor, AP) CPU.In further embodiments, processor 23 can
To be digital signal processor (Digital Signal Processor, DSP), field programmable gate array (Field
Programmable Gate Array, FPGA) and/or other processing circuits.
Fig. 3 is the flow diagram according to the operating method of the touch control display apparatus of one embodiment of the invention.It please refers to
Fig. 2 and Fig. 3.In step slo, the operation mode of touch-control computing circuit 22 may be selected in processor 23.Touch-control computing circuit 22 can
Operation is in normal mode and burning (programming) mode.When step S10 selects burning mode, processor 23 provides journey
Sequence code controls touch-control display driver circuit 21 and acquires the right of control (step S11) to touch-control display driver circuit 21.Citing comes
It says, in client/server, touch-control display driver circuit 21 serves as " main (master) " role's (main control end) in burning mode, and
Touch-control computing circuit 22 serves as role's (controlled terminal) " from (slave) " in burning mode.When touch-control display driver circuit 21 takes
When obtaining control, touch-control display driver circuit 21 is able to for program code being burned onto touch-control computing circuit 22.
When step S10 selects normal mode, touch-control display driver circuit 21 will drive touch-control display panel, to detect touching
The touch event of display panel 24 is controlled, and generates touch sensing data.In the normal mode, touch-control computing circuit 22 obtains control
Power, to obtain the touch sensing data (step S12) about touch-control display panel 24 from touch-control display driver circuit 21.Citing
For, in client/server, touch-control computing circuit 22 is served as " master " role (main control end) in the normal mode, and touch-control display is driven
Dynamic circuit 21 serves as " from " role (controlled terminal) in the normal mode.When touch-control computing circuit 22 serves as " master " role, touch-control
Computing circuit 22 can initiatively obtain the touch sensing data about touch-control display panel 24 from touch-control display driver circuit 21.
In the normal mode, after obtaining touch sensing data, touch-control computing circuit 22 can execute said program code to touch this
The operation that sensing data carry out touch-control algorithm is touched, to obtain location information of the touch event on touch-control display panel 24.It is obtaining
After the location information for obtaining touch event, this location information can be passed back touch-control display driver circuit 21 by touch-control computing circuit 22.
Therefore, processor 23 can obtain this location information from touch-control display driver circuit 21.
Based on above-mentioned, described in touch control display apparatus 200 described in the present embodiment can carry out in touch-control computing circuit 22
The operation of touch-control algorithm, rather than the operation of the touch-control algorithm is carried out in touch-control display driver circuit 21.Therefore, in touch-control
The computing circuit of touch-control algorithm can be saved in display driver circuit 21, and then shortened and respectively patrolled in touch-control display driver circuit 21
The winding length between element is collected, therefore can effectively promote the area utilization rate of touch-control display driver circuit 21.Meanwhile touch-control is shown
Driving circuit 21 also provides the function of burning mode, so as to by the program code burning of touch-control algorithm/be updated to touch-control operation electricity
In road 22.
Fig. 4 is the circuit box schematic diagram for illustrating touch control display apparatus 200 shown in Fig. 2.As shown in figure 4, touch-control is shown
Driving circuit 21 includes display driver circuit 211, touch control sensing circuit 212 and control circuit 213.Display driver circuit 211
Touch-control display panel 24 can be driven to show image.Touch control sensing circuit 212 can detect the touching thing on touch-control display panel 24
Part and generate touch sensing data.According to design requirement, touch control sensing circuit 212 may include AFE(analog front end) (Analog Front
End, AFE) circuit 2121 and analog-to-digital conversion circuit 2122.Analog front circuit 2121 can connect from touch-control display panel 24
Touching signals are received, such as detect the touching behavior of user by the sensing electrode on touch-control display panel 24.Simulation numeral
Conversion circuit 2122 couples analog front circuit 2121, so that touching signals are converted to touch sensing data.
Control circuit 213 couples display driver circuit 211 and touch control sensing circuit 212, and controllable touch-control computing circuit
22 runnings are in different operation modes.For example, Fig. 5 is according to circuit shown in one embodiment of the invention explanatory diagram 2 and Fig. 4
Switch the signal sequence schematic diagram of different operation modes.When touch-control display driver circuit 21 needs to carry out touch-control computing circuit 22
When resetting (reset), touch-control display driver circuit 21 exports the second reset signal rst_n_2 to touch-control computing circuit 22, with
Reset touch-control computing circuit 22 (even if also the running of touch-control computing circuit 22 is in resetting mode).In the embodiment shown in fig. 5, when
Second reset signal rst_n_2 is that high logic level indicates " non-reset state ", and working as the second reset signal rst_n_2 is low logic
" reset state " is indicated when level.In other embodiments, the second reset signal rst_n_2 is that low logic level indicates " non-resetting
State ", and " reset state " is indicated when the second reset signal rst_n_2 is high logic level.It is in the second reset signal rst_n_2
During low logic level (reset state), the operation mode of touch-control computing circuit 22 is resetting mode.
When processor 23 needs to reset touch-control display driver circuit 21 and touch-control computing circuit 22, processor 23
First reset signal rst_n_1 is exported to control circuit 213, (that is, makes touch-control aobvious to reset touch-control display driver circuit 21
Show the running of driving circuit 21 in resetting mode).In the embodiment shown in fig. 5, when the first reset signal rst_n_1 is high logic
" non-reset state " is indicated when level, and indicates " reset state " when the first reset signal rst_n_1 is low logic level.When first
When reset signal rst_n_1 is low logic level, the operation mode of touch-control computing circuit 22 is switched to reset by burning mode
Mode.In other embodiments, the first reset signal rst_n_1 can be indicated " non-reset state " for low logic level, and the first weight
Confidence rst_n_1 is that high logic level can indicate " reset state ".(first during touch-control display driver circuit 21 is reset
During reset signal rst_n_1 is low logic level), control circuit 213 exports the second reset signal rst_n_2 to touch-control
Computing circuit 22 (as shown in Figure 5), to reset touch-control computing circuit 22 (even if also the running of touch-control computing circuit 22 is in resetting mould
Formula).
The deposit that touch sensing data caused by touch control sensing circuit 212 can be temporarily placed in control circuit 213
In device (register) (not shown).In the normal mode, after touch control sensing circuit 212 generates touch sensing data, control
Circuit 213 can notify touch-control computing circuit 22 by the second interrupt signal int_2, and touch-control computing circuit 22 is because obtaining control at this time
It weighs and is able to obtain touch sensing data from touch-control display driver circuit 21.Touch-control computing circuit 22 can execute program code,
To carry out the operation of touch-control algorithm.After obtaining touch sensing data from touch-control display driver circuit 21, touch-control computing circuit
22, which carry out the touch-control algorithm, carries out operation to the touch sensing data, to obtain touch event on touch-control display panel 24
Location information.Then, location information can be returned to touch-control display driver circuit 21 by touch-control computing circuit 22, at this time control electricity
It road 213 can be by the first interrupt signal int_1 notifier processes device 23, to allow processor 23 to take from touch-control display driver circuit 21
Obtain the location information about touch-control display panel 24.
The second reset signal rst_n_2 and second can be used to interrupt letter for the control circuit 213 of touch-control display driver circuit 21
Number int_2 switches the operation mode of touch-control computing circuit 22.For example, in the transition phase of the second reset signal rst_n_2
In between (such as from during low logic level transition to high logic level), if the second interrupt signal int_2 is " middle off-state " (example
Such as high logic level), then the operation mode of touch-control computing circuit 22 is switched to burning mode from resetting mode.In burning mode
Under, control is returned to the control circuit 213 of touch-control display driver circuit 21 by touch-control computing circuit 22, and processor 23 can lead to
Cross data transmission interface (such as internal integrated circuit (Inter-Integrated Circuit, I2C) interface) by touch-control algorithm
Program code be supplied to touch-control display driver circuit 21.After obtaining said program code, the touch-control for obtaining control is shown
Said program code can be burned onto touch-control computing circuit 22 by driving circuit 21 under burning mode.
During the transition of the second reset signal rst_n_2 (such as from low logic level transition to high logic level
Period) in, if the second interrupt signal int_2 is " non-interrupted state " (such as low logic level), the behaviour of touch-control computing circuit 22
Operation mode is switched to normal mode from resetting mode, as shown in Figure 5.In the normal mode, touch-control computing circuit 22 obtains control
System power, to obtain the touch sensing data about touch-control display panel 24 from touch-control display driver circuit 21.
In the embodiment shown in fig. 4, touch-control computing circuit 22 may include memory 221 and microcontroller 222.Micro-control
Device 222 processed is coupled to memory 221.In the normal mode, microcontroller 222 acquires the right of control, and drives to show from touch-control
Circuit 21 obtains the touch sensing data about touch-control display panel 24.In burning mode, microcontroller 222 returns control
Also touch-control display driver circuit 21, so that touch-control display driver circuit 21 is able to program code burning/update of touch-control algorithm
Into memory 221.According to design requirement, memory 221 may include volatile memory (Volatile Memory) and/or
Nonvolatile memory (Non-volatile Memory).The volatile memory may include static random access memory
(Static Random-Access Memory, SRAM) and/or other memories and the nonvolatile memory can wrap
Include flash memory and/or other memories.
It is worth noting that, microcontroller 222 and memory 221 are integrated in touch-control computing circuit 22 by the present embodiment,
Therefore touch-control computing circuit 22 can carry out the operation of the touch-control algorithm.Since touch-control display driver circuit 21 does not need to carry out
The operation of the touch-control algorithm, therefore the area of the control circuit 213 of touch-control display driver circuit 21 can be reduced, therefore can be promoted
The area utilization rate of touch-control display driver circuit 21.
Fig. 6 is the flow diagram according to the switching operation modes of one embodiment of the invention.Referring to figure 5. with Fig. 6,
In step S20, touch-control display driver circuit 21 second reset signal rst_n_2 and the second interrupt signal int_2 can be exported to
Touch-control computing circuit 22, to switch the operation mode of touch-control computing circuit 22.As shown in figure 5, as the second reset signal rst_
When n_2 is the first logic level (such as low level), the operation mode of touch-control computing circuit 22 is switched to resetting mode (step
S21).It is the when the first reset signal rst_n_1 is the second logic level (such as high level) and the second reset signal rst_n_2
During one logic level (such as low level), touch-control display driver circuit 21 can selectively protect interrupt signal int_2
It holds in third logic level (such as low level) or the 4th logic level (such as high level).In addition, when processor 23 is reset
During touch-control display driver circuit 21 in (the first reset signal rst_n_1 be the first logic level during), touch-control is shown
Driving circuit 21 is reset, so that the second reset signal rst_n_2 is pulled to the first logic level by touch-control display driver circuit 21,
And interrupt signal int_2 is made to be maintained at third logic level (such as low level).
Referring again to Fig. 5, when the second reset signal rst_n_2 carries out transition (such as supreme electricity is shifted by low level
It is flat), if the second interrupt signal int_2 is third logic level (such as low level), the operation mode of touch-control computing circuit 22
It will be acquired the right of control at this time by touch-control computing circuit 22 by resetting pattern switching to normal mode (step S22).In step S23
In, when the second reset signal rst_n_2 carries out transition (such as being transferred to high level by low level), if the second interrupt signal
When int_2 is the 4th logic level (such as high level), then the operation mode of touch-control computing circuit 22 will be by resetting pattern switching
To burning mode, touch-control computing circuit 22 gives back control to touch-control display driver circuit 21 at this time.
In conclusion design architecture of the touch-control display driver circuit 21 described in all embodiments using plug-in computing circuit,
To save control circuit 213 and the memory occupied area in touch-control display driver circuit 21, and then shortens touch-control and show
Winding length in driving circuit 21 between each logic element, therefore the area that can effectively promote touch-control display driver circuit 21 uses
Rate.Meanwhile touch-control display driver circuit 21 can also be cut by the second reset signal rst_n_2 with the second interrupt signal int_2
The operation mode for changing touch-control computing circuit 22 allows touch-control display driver circuit 21 to be able under burning mode to touch-control computing circuit
22 execute burning/more new job of firmware.
Although the present invention is disclosed as above with embodiment, however, it is not to limit the invention, and those skilled in the art exist
It does not depart from the spirit and scope of the present invention, when can make some changes and embellishment, therefore protection scope of the present invention is appended by the view
Subject to claims confining spectrum.
Claims (26)
1. a kind of touch control display apparatus, comprising:
Touch-control display driver circuit, for driving touch-control display panel；
Touch-control computing circuit couples the touch-control display driver circuit, wherein the touch-control computing circuit obtains control in the normal mode
System power, to obtain the touch sensing data about the touch-control display panel from the touch-control display driver circuit, and in burning mould
The touch-control display driver circuit obtains the control in formula, and program code is burned onto the touch-control computing circuit；And
Processor couples the touch-control display driver circuit to provide the program code, wherein the processor under the burning mode
The program code is provided and gives the touch-control display driver circuit, and controls the touch-control display driver circuit and obtains the control.
2. touch control display apparatus as described in claim 1, wherein the touch-control display driver circuit includes:
Display driver circuit, for driving the touch-control display panel to show image；
Touch control sensing circuit generates the touch sensing data for detecting the touch event on the touch-control display panel；With
And
Control circuit couples the display driver circuit and the touch control sensing circuit, wherein the control circuit under the normal mode
Notify the touch-control computing circuit, so that the touch-control computing circuit obtains the touch sensing data from the touch-control display driver circuit,
And the control circuit resets the touch-control computing circuit under resetting mode.
3. touch control display apparatus as claimed in claim 2, wherein the touch control sensing circuit includes:
Analog front circuit, for receiving touching signals from the touch-control display panel；And
Analog-to-digital conversion circuit couples the analog front circuit, for the touching signals to be converted to the touch sensing data.
4. touch control display apparatus as described in claim 1, wherein the touch-control computing circuit includes microcontroller, the processor packet
Include application processor.
5. touch control display apparatus as described in claim 1, wherein the touch-control computing circuit executes the journey in the normal mode
Sequence code to carry out the touch sensing data operation of touch-control algorithm, to obtain touch event on the touch-control display panel
Location information.
6. touch control display apparatus as claimed in claim 5, wherein under the normal mode, the touch-control computing circuit is by the position
Information back gives the touch-control display driver circuit, which notifies the processor by the first interrupt signal,
So that the processor obtains the location information from the touch-control display driver circuit.
7. touch control display apparatus as described in claim 1, wherein the touch-control display driver circuit using reset signal and interrupts
Signal switches the operation mode of the touch-control computing circuit.
8. touch control display apparatus as claimed in claim 7, wherein
When the reset signal is the first logic level, the operation mode of the touch-control computing circuit is switched to resetting mode；
The interrupt signal is in during the reset signal is transferred to the transition of the second logic level from first logic level
When third logic level, the operation mode of the touch-control computing circuit is switched to the normal mode from the resetting mode, and should
Touch-control computing circuit obtains the control；And
When the interrupt signal is four logic level in during the transition in the reset signal, the behaviour of the touch-control computing circuit
Operation mode is switched to the burning mode from the resetting mode, and the touch-control computing circuit is given back the control to the touch-control and shown
Show driving circuit.
9. touch control display apparatus as claimed in claim 7, wherein in the phase of the processor reset touch-control display driver circuit
Between in, which maintains the first logic level for the reset signal, by the behaviour of the touch-control computing circuit
Operation mode maintains resetting mode.
10. a kind of operating method of touch control display apparatus, comprising:
Burning operation step provides program code to touch-control display driver circuit and control by processor in burning mode
The touch-control display driver circuit acquires the right of control, so that the program code is burned onto touch-control fortune by the touch-control display driver circuit
It calculates in circuit；And
Normal operation step drives touch-control display panel by the touch-control display driver circuit in the normal mode, by the touch-control
Computing circuit obtains the control to obtain the touch sensing number about the touch-control display panel from the touch-control display driver circuit
According to.
11. operating method as claimed in claim 10, the wherein normal operation step further include:
The program code is executed by the touch-control computing circuit the touch sensing data are carried out with the operation of touch-control algorithm, to obtain
Location information of the touch event on the touch-control display panel.
12. operating method as claimed in claim 11, the wherein normal operation step further include:
The location information is returned into the touch-control display driver circuit by the touch-control computing circuit；And
First interrupt signal is exported by the touch-control display driver circuit and notifies the processor, so that the processor is shown from the touch-control
Driving circuit obtains the location information.
13. operating method as claimed in claim 10, further includes:
Switch mode step switches the touch-control operation electricity using reset signal and interrupt signal by the touch-control display driver circuit
The operation mode on road.
14. operating method as claimed in claim 13, the wherein switch mode step further include:
When the reset signal is the first logic level, the operation mode of the touch-control computing circuit is switched to resetting mode；
The interrupt signal is in during the reset signal is transferred to the transition of the second logic level from first logic level
When third logic level, by the operation mode of the touch-control computing circuit from the resetting pattern switching to the normal mode, and by
The touch-control computing circuit obtains the control；And
When the interrupt signal is four logic level in during the transition in the reset signal, by the touch-control computing circuit
Operation mode gives back the touch-control display driver circuit from the resetting pattern switching to the burning mode, and by the control.
15. operating method as claimed in claim 10, further includes:
During the processor reset touch-control display driver circuit, reset signal is tieed up by the touch-control display driver circuit
It holds in the first logic level, the operation mode of the touch-control computing circuit is maintained into resetting mode.
16. a kind of touch-control display driver circuit, comprising:
Display driver circuit, for driving touch-control display panel to show image；
Touch control sensing circuit generates touch sensing data for detecting the touch event on the touch-control display panel；And
Control circuit couples the display driver circuit and the touch control sensing circuit, wherein
In the normal mode, which gives control to touch-control computing circuit, and notify the touch-control computing circuit so that
The touch-control computing circuit obtains the touch sensing data from the touch-control display driver circuit,
In burning mode, which fetches the control, and program code is burned onto the touch-control computing circuit, with
And
Under resetting mode, which resets the touch-control computing circuit.
17. touch-control display driver circuit as claimed in claim 16, wherein the touch control sensing circuit includes:
Analog front circuit, for receiving touching signals from the touch-control display panel；And
Analog-to-digital conversion circuit couples the analog front circuit, for the touching signals to be converted to the touch sensing data.
18. touch-control display driver circuit as claimed in claim 16, wherein the touch-control computing circuit is held in the normal mode
The row program code to carry out the touch sensing data operation of touch-control algorithm, is shown with obtaining the touch event in the touch-control
The location information is returned to the control circuit by the location information on panel, the touch-control computing circuit, and the control circuit is by
One interrupt signal notifier processes device, so that the processor obtains the location information from the touch-control display driver circuit.
19. touch-control display driver circuit as claimed in claim 16, wherein the control circuit using reset signal and interrupts letter
Number switch the operation mode of the touch-control computing circuit.
20. touch-control display driver circuit as claimed in claim 19, wherein
When the reset signal is the first logic level, the operation mode of the touch-control computing circuit is switched to resetting mode；
The interrupt signal is in during the reset signal is transferred to the transition of the second logic level from first logic level
When third logic level, the operation mode of the touch-control computing circuit is switched to the normal mode from the resetting mode, and should
Control circuit gives the control to the touch-control computing circuit；And
When the interrupt signal is four logic level in during the transition in the reset signal, the behaviour of the touch-control computing circuit
Operation mode is switched to the burning mode from the resetting mode, and the control circuit fetches the control.
21. touch-control display driver circuit as claimed in claim 19, wherein in the processor reset touch-control display driver circuit
During in, which maintains the first logic level for the reset signal, by the operation mould of the touch-control computing circuit
Formula maintains resetting mode.
22. a kind of touch-control computing circuit, comprising:
Memory；And
Microcontroller is coupled to the memory, wherein the microcontroller is acquired the right of control to show from touch-control in the normal mode
Driving circuit obtains touch sensing data about touch-control display panel, and in burning mode the microcontroller by the control
Power gives back the touch-control display driver circuit and program code is burned onto the memory by the touch-control display driver circuit.
23. touch-control computing circuit as claimed in claim 22, wherein the microcontroller executes the program in the normal mode
Code to carry out the touch sensing data operation of touch-control algorithm, to obtain position of the touch event on the touch-control display panel
Confidence breath.
24. touch-control computing circuit as claimed in claim 23, wherein the microcontroller believes the position under the normal mode
Breath returns to the touch-control display driver circuit.
25. touch-control computing circuit as claimed in claim 22, wherein the microcontroller is according to the touch-control display driver circuit institute
The reset signal of output switches the operation mode of the touch-control computing circuit with interrupt signal.
26. touch-control computing circuit as claimed in claim 25, wherein
When the reset signal is the first logic level, which attaches most importance to the operation mode switching of the touch-control computing circuit
Set mode；
The interrupt signal is in during the reset signal is transferred to the transition of the second logic level from first logic level
When third logic level, the microcontroller is by the operation mode of the touch-control computing circuit from the resetting pattern switching to the normal mode
Formula, and the microcontroller obtains the control；And
When the interrupt signal is four logic level in during the transition in the reset signal, the microcontroller is by the touch-control
The operation mode of computing circuit is from the resetting pattern switching to the burning mode, and the microcontroller gives back the control to this
Touch-control display driver circuit.
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