CN110147167B - Touch display driving circuit, operation circuit, display device and operation method thereof - Google Patents
Touch display driving circuit, operation circuit, display device and operation method thereof Download PDFInfo
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- CN110147167B CN110147167B CN201810140248.6A CN201810140248A CN110147167B CN 110147167 B CN110147167 B CN 110147167B CN 201810140248 A CN201810140248 A CN 201810140248A CN 110147167 B CN110147167 B CN 110147167B
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- 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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Abstract
The invention discloses a touch display driving circuit, an arithmetic circuit, a display device and an operation method thereof. The touch display device comprises a touch display driving circuit, a touch operation circuit and a processor. In the normal mode, the touch computing circuit obtains control power to obtain touch sensing data related to the touch display panel from the touch display driving circuit. In the burning mode, the processor provides the program code for the touch display driving circuit and controls the touch display driving circuit to obtain the control right, and the touch display driving circuit burns the program code into the touch operation circuit.
Description
Technical Field
The present invention relates to a touch display device, and more particularly, to a touch display device capable of increasing the area utilization rate of a touch display driving chip and an operating method thereof.
Background
In an in-cell (in-cell) Touch panel application, a Touch panel is usually configured with a Touch with Display Driver integration (TDDI) chip to implement Touch and Display functions. Fig. 1 is a schematic circuit block diagram of a conventional touch display device. As shown in fig. 1, the touch display device 100 is provided with a TDDI chip 11 and a touch display panel 12. In order to achieve the narrow frame design effect of the touch display panel 12, elements such as a Micro Control Unit (MCU) and a Static Random-Access Memory (SRAM) need to be arranged in the TDDI chip 11 in a narrow and long arrangement, which increases the difficulty of winding and increases the winding area of the circuit. Generally, the area utilization of the TDDI chip 11 can be defined as the logic area/(routing area + logic area). A TDDI chip that configures an MCU in a long and narrow type will make a conventional TDDI chip exhibit a low area usage rate.
In view of the above, it is desirable to provide a touch display device, which can increase the area utilization rate of the TDDI chip to reduce the manufacturing cost of the touch display device.
Disclosure of Invention
The invention provides a touch display driving circuit, a touch operation circuit, a touch display device and an operation method thereof, which can improve the area utilization rate of the touch display driving circuit.
The embodiment of the invention provides a touch display device, which comprises a touch display driving circuit, a touch operation circuit and a processor. The touch display driving circuit is used for driving the touch display panel. The touch operation circuit is coupled with the touch display driving circuit. In the normal mode, the touch computing circuit obtains control power to obtain touch sensing data related to the touch display panel from the touch display driving circuit. The touch display driving circuit obtains the control right in a programming mode to program the program code into the touch operation circuit. The processor is coupled to the touch display driving circuit to provide a program code. In the burning mode, the processor provides program codes to the touch display driving circuit and controls the touch display driving circuit to obtain control power.
The embodiment of the invention provides an operation method of a touch display device. The operation method of the touch display device comprises a burning operation step and a normal operation step. The burning operation step is to provide a program code to the touch display driving circuit and control the touch display driving circuit to obtain a control right by the processor in a burning mode so that the program code is burnt into the touch operation circuit by the touch display driving circuit. The normal operation step is to drive the touch display panel by the touch display driving circuit in the normal mode, and the touch operation circuit obtains the control right to obtain the touch sensing data related to the touch display panel from the touch display driving circuit.
The embodiment of the invention provides a touch display driving circuit. The touch display driving circuit comprises a display driving circuit, a touch sensing circuit and a control circuit. The display driving circuit is used for driving the touch display panel to display images. The touch sensing circuit is used for detecting a touch event on the touch display panel to generate touch sensing data. The control circuit is coupled with the display driving circuit and the touch sensing circuit. In the normal mode, the control circuit gives control power to the touch arithmetic circuit and notifies the touch arithmetic circuit to enable the touch arithmetic circuit to obtain touch sensing data from the touch display driving circuit. In the burning mode, the control circuit retrieves the control power to burn the program code into the touch operation circuit, and in the reset (reset) mode, the control circuit resets the touch operation circuit.
The embodiment of the invention provides a touch operation circuit. The touch operation circuit comprises a memory and a microcontroller. The microcontroller is coupled to the memory. In the normal mode, the microcontroller obtains control to obtain touch sensing data related to the touch display panel from the touch display driving circuit. In the burning mode, the microcontroller returns the control right to the touch display driving circuit, so that the touch display driving circuit burns the program codes into the memory.
Based on the above, in the touch display device and the operation method thereof according to the embodiments of the invention, the microcontroller and the memory are integrated into the touch arithmetic circuit, so as to save the area occupied by the microcontroller and the memory in the touch display driving circuit, and further shorten the winding length between the logic elements in the touch display driving circuit, thereby effectively improving the area utilization rate of the touch display driving circuit. Meanwhile, the touch display driving circuit also provides a function of a burning mode, and program codes of a touch algorithm can be burnt into the touch operation circuit.
In order to make the aforementioned and other features and advantages of the invention more comprehensible, embodiments accompanied with figures are described in detail below.
Drawings
Fig. 1 is a schematic diagram of a circuit block of a conventional touch display device.
Fig. 2 is a schematic circuit block diagram of a touch display device according to an embodiment of the invention.
Fig. 3 is a flowchart illustrating an operation method of a touch display device according to an embodiment of the invention.
Fig. 4 is a schematic circuit block diagram illustrating the touch display device shown in fig. 2.
FIG. 5 is a signal timing diagram illustrating different operation modes according to an embodiment of the invention.
Fig. 6 is a flow chart illustrating a switching operation mode according to an embodiment of the invention.
[ notation ] to show
11: TDDI chip
12: touch control display panel
21: touch display driving circuit
22: touch control arithmetic circuit
23: processor with a memory having a plurality of memory cells
24: touch control display panel
100. 200: touch control display device
211: display driving circuit
212: touch sensing circuit
213: control circuit
221: memory device
222: micro-controller
2121: analog front-end circuit
2122: analog-to-digital conversion circuit
S10-S12, S20-S23: method step
int _ 1: first interrupt signal
int _ 2: second interrupt signal
I2C: internal integrated circuit
rst _ n _ 1: a first reset signal
rst _ n _ 2: second reset signal
Detailed Description
The term "coupled" as used throughout this specification, including the claims, may refer to any direct or indirect connection means. For example, if a first device couples (or connects) to a second device, it should be construed that the first device may be directly connected to the second device or the first device may be indirectly connected to the second device through other devices or some connection means. Further, wherever possible, the same reference numbers will be used throughout the drawings and the description to refer to the same or like parts. Elements/components/steps in different embodiments using the same reference numerals or using the same terms may be referred to one another in relation to the description.
Fig. 2 is a schematic circuit block diagram of a touch display device according to an embodiment of the invention. As shown in fig. 2, the touch display device 200 includes a touch display driving circuit 21, a touch computing circuit 22, and a processor 23. The touch display driving circuit 21 is coupled to the touch display panel 24 so as to drive the touch display panel 24. The touch computing circuit 22 is coupled to the touch display driving circuit 21. The processor 23 is coupled to the touch display driving circuit 21. The touch display device 200 may be a mobile phone, a tablet computer, a notebook computer or other portable electronic devices according to design requirements. In some embodiments, the Processor 23 may be a Central Processing Unit (CPU) for running an Operating System (OS) or an Application Processor (AP) of the mobile phone. In other embodiments, the Processor 23 may be a Digital Signal Processor (DSP), a Field Programmable Gate Array (FPGA), and/or other processing circuitry.
Fig. 3 is a flowchart illustrating an operation method of a touch display device according to an embodiment of the invention. Please refer to fig. 2 and fig. 3. In step S10, the processor 23 can select the operation mode of the touch arithmetic circuit 22. The touch computing circuit 22 can operate in a normal mode and a programming mode. When the recording mode is selected in step S10, the processor 23 provides a program code to the touch display driving circuit 21 and controls the touch display driving circuit 21 to obtain control (step S11). For example, in the master-slave architecture, the touch display driving circuit 21 plays a role of master (master) in the programming mode, and the touch operation circuit 22 plays a role of slave (slave) in the programming mode. When the touch display driving circuit 21 obtains the control right, the touch display driving circuit 21 records the program code into the touch computing circuit 22.
When the normal mode is selected in step S10, the touch display driving circuit 21 drives the touch display panel to detect a touch event of the touch display panel 24 and generate touch sensing data. In the normal mode, the touch arithmetic circuit 22 obtains control right to obtain touch sensing data related to the touch display panel 24 from the touch display driving circuit 21 (step S12). For example, in the master-slave configuration, the touch arithmetic circuit 22 plays a "master" role (master) in the normal mode, and the touch display driving circuit 21 plays a "slave" role (slave) in the normal mode. When the touch arithmetic circuit 22 plays a "main" role, the touch arithmetic circuit 22 can actively obtain touch sensing data related to the touch display panel 24 from the touch display driving circuit 21. In the normal mode, after obtaining the touch sensing data, the touch operation circuit 22 can execute the program code to perform a touch algorithm operation on the touch sensing data to obtain the position information of the touch event on the touch display panel 24. After obtaining the position information of the touch event, the touch computing circuit 22 may transmit the position information back to the touch display driving circuit 21. Therefore, the processor 23 can obtain the position information from the touch display driving circuit 21.
Based on the above, the touch display device 200 of the present embodiment can perform the operation of the touch algorithm in the touch operation circuit 22, instead of performing the operation of the touch algorithm in the touch display driving circuit 21. Therefore, the operation circuit of the touch algorithm in the touch display driving circuit 21 can be saved, and the routing length between the logic elements in the touch display driving circuit 21 is shortened, so that the area utilization rate of the touch display driving circuit 21 can be effectively improved. Meanwhile, the touch display driving circuit 21 also provides a function of a write mode, so as to write/update the program code of the touch algorithm into the touch computing circuit 22.
Fig. 4 is a schematic circuit block diagram illustrating the touch display device 200 shown in fig. 2. As shown in fig. 4, the touch display driving circuit 21 includes a display driving circuit 211, a touch sensing circuit 212, and a control circuit 213. The display driving circuit 211 may drive the touch display panel 24 to display an image. The touch sensing circuit 212 can detect a touch event on the touch display panel 24 to generate touch sensing data. The touch sensing circuit 212 may include an Analog Front End (AFE) circuit 2121 and an Analog-to-digital conversion circuit 2122 according to design requirements. The analog front-end circuit 2121 can receive a touch signal from the touch display panel 24, for example, detect a touch behavior of a user through a sensing electrode on the touch display panel 24. The analog-to-digital conversion circuit 2122 is coupled to the analog front-end circuit 2121 for converting the touch signal into touch sensing data.
The control circuit 213 is coupled to the display driving circuit 211 and the touch sensing circuit 212, and can control the touch computing circuit 22 to operate in different operation modes. For example, fig. 5 is a signal timing diagram illustrating the circuits of fig. 2 and 4 switching different operation modes according to an embodiment of the invention. When the touch display driving circuit 21 needs to reset (reset) the touch arithmetic circuit 22, the touch display driving circuit 21 outputs the second reset signal rst _ n _2 to the touch arithmetic circuit 22 to reset the touch arithmetic circuit 22 (i.e. to make the touch arithmetic circuit 22 operate in the reset mode). In the embodiment shown in fig. 5, the "non-reset state" is indicated when the second reset signal rst _ n _2 is at a high logic level, and the "reset state" is indicated when the second reset signal rst _ n _2 is at a low logic level. In other embodiments, the second reset signal rst _ n _2 is at a low logic level to indicate a "non-reset state", and when the second reset signal rst _ n _2 is at a high logic level to indicate a "reset state". During the period that the second reset signal rst _ n _2 is at a low logic level (reset state), the operation mode of the touch operation circuit 22 is the reset mode.
When the processor 23 needs to reset the touch display driving circuit 21 and the touch computing circuit 22, the processor 23 outputs the first reset signal rst _ n _1 to the control circuit 213 to reset the touch display driving circuit 21 (i.e., to make the touch display driving circuit 21 operate in the reset mode). In the embodiment shown in fig. 5, the "non-reset state" is indicated when the first reset signal rst _ n _1 is at a high logic level, and the "reset state" is indicated when the first reset signal rst _ n _1 is at a low logic level. When the first reset signal rst _ n _1 is at a low logic level, the operation mode of the touch computing circuit 22 is switched from the programming mode to the reset mode. In other embodiments, the first reset signal rst _ n _1 being at a low logic level may indicate a "non-reset state", and the first reset signal rst _ n _1 being at a high logic level may indicate a "reset state". During the period when the touch display driving circuit 21 is reset (during the period when the first reset signal rst _ n _1 is at a low logic level), the control circuit 213 outputs the second reset signal rst _ n _2 to the touch arithmetic circuit 22 (as shown in fig. 5) to reset the touch arithmetic circuit 22 (i.e., to operate the touch arithmetic circuit 22 in the reset mode).
The touch sensing data generated by the touch sensing circuit 212 may be temporarily placed in a register (not shown) within the control circuit 213. In the normal mode, after the touch sensing circuit 212 generates the touch sensing data, the control circuit 213 can notify the touch computing circuit 22 by the second interrupt signal int _2, and the touch computing circuit 22 obtains the touch sensing data from the touch display driving circuit 21 due to obtaining the control right. The touch operation circuit 22 can execute a program code to perform the operation of the touch algorithm. After obtaining the touch sensing data from the touch display driving circuit 21, the touch computing circuit 22 performs the touch algorithm to compute the touch sensing data to obtain the position information of the touch event on the touch display panel 24. Subsequently, the touch computing circuit 22 may transmit the position information back to the touch display driving circuit 21, and the control circuit 213 may notify the processor 23 by the first interrupt signal int _1, so as to enable the processor 23 to obtain the position information about the touch display panel 24 from the touch display driving circuit 21.
The control circuit 213 of the touch display driving circuit 21 can use the second reset signal rst _ n _2 and the second interrupt signal int _2 to switch the operation mode of the touch computing circuit 22. For example, during a transition period of the second reset signal rst _ n _2 (e.g., a period of transition from a low logic level to a high logic level), if the second interrupt signal int _2 is in an "interrupt state" (e.g., a high logic level), the operation mode of the touch operation circuit 22 is switched from the reset mode to the programming mode. In the write mode, the touch computing Circuit 22 returns the control right to the control Circuit 213 of the touch display driving Circuit 21, and the processor 23 may pass through a data transmission interface (e.g., an Inter-Integrated Circuit (I))2C) Interface) provides the program code of the touch algorithm to the touch display driver circuit 21. After obtaining the program code, the touch display driving circuit 21 obtaining the control right may burn the program code into the touch arithmetic circuit 22 in the burning mode.
During the transition period of the second reset signal rst _ n _2 (e.g., during the transition period from the low logic level to the high logic level), if the second interrupt signal int _2 is in the "non-interrupt state" (e.g., the low logic level), the operation mode of the touch operation circuit 22 is switched from the reset mode to the normal mode, as shown in fig. 5. In the normal mode, the touch arithmetic circuit 22 obtains control right to obtain touch sensing data related to the touch display panel 24 from the touch display driving circuit 21.
In the embodiment shown in fig. 4, the touch arithmetic circuit 22 may include a memory 221 and a microcontroller 222. The microcontroller 222 is coupled to the memory 221. In the normal mode, the microcontroller 222 takes control to obtain touch sensing data related to the touch display panel 24 from the touch display driving circuit 21. In the burning mode, the microcontroller 222 returns the control right to the touch display driving circuit 21, so that the touch display driving circuit 21 can burn/update the program code of the touch algorithm into the memory 221. The Memory 221 may include a Volatile Memory (Volatile Memory) and/or a Non-Volatile Memory (Non-Volatile Memory) according to design requirements. The volatile Memory may include Static Random-Access Memory (SRAM) and/or other Memory, and the non-volatile Memory may include flash Memory and/or other Memory.
It should be noted that, in the present embodiment, the microcontroller 222 and the memory 221 are integrated into the touch computing circuit 22, so that the touch computing circuit 22 can perform the operation of the touch algorithm. Since the touch display driving circuit 21 does not need to perform the operation of the touch algorithm, the area of the control circuit 213 of the touch display driving circuit 21 can be reduced, and thus the area utilization rate of the touch display driving circuit 21 can be increased.
Fig. 6 is a flow chart illustrating a switching operation mode according to an embodiment of the invention. Referring to fig. 5 and 6, in step S20, the touch display driving circuit 21 outputs the second reset signal rst _ n _2 and the second interrupt signal int _2 to the touch computing circuit 22 so as to switch the operation mode of the touch computing circuit 22. As shown in fig. 5, when the second reset signal rst _ n _2 is at the first logic level (e.g., low level), the operation mode of the touch operation circuit 22 is switched to the reset mode (step S21). During a period when the first reset signal rst _ n _1 is at the second logic level (e.g., high level) and the second reset signal rst _ n _2 is at the first logic level (e.g., low level), the touch display driving circuit 21 can selectively keep the interrupt signal int _2 at the third logic level (e.g., low level) or the fourth logic level (e.g., high level). In addition, during the period when the processor 23 resets the touch display driving circuit 21 (during the period when the first reset signal rst _ n _1 is at the first logic level), the touch display driving circuit 21 is reset, so that the touch display driving circuit 21 pulls the second reset signal rst _ n _2 to the first logic level, and the interrupt signal int _2 is maintained at the third logic level (e.g., low level).
Referring to fig. 5 again, when the second reset signal rst _ n _2 transitions (e.g., from low level to high level), if the second interrupt signal int _2 is at the third logic level (e.g., low level), the operation mode of the touch computing circuit 22 is switched from the reset mode to the normal mode (step S22), and the touch computing circuit 22 obtains control right at this time. In step S23, when the second reset signal rst _ n _2 transitions (e.g., from low level to high level), if the second interrupt signal int _2 is at the fourth logic level (e.g., high level), the operation mode of the touch computing circuit 22 is switched from the reset mode to the programming mode, and the touch computing circuit 22 returns the control right to the touch display driving circuit 21.
To sum up, the touch display driving circuit 21 according to the embodiments adopts a design structure of an external arithmetic circuit to save the area occupied by the control circuit 213 and the memory in the touch display driving circuit 21, so as to shorten the routing length between the logic elements in the touch display driving circuit 21, thereby effectively improving the area utilization rate of the touch display driving circuit 21. Meanwhile, the touch display driving circuit 21 can also switch the operation mode of the touch computing circuit 22 by the second reset signal rst _ n _2 and the second interrupt signal int _2, so that the touch display driving circuit 21 can execute the recording/updating operation of the firmware on the touch computing circuit 22 in the recording mode.
Although the present invention has been described with reference to the above embodiments, it should be understood that various changes and modifications can be made therein by those skilled in the art without departing from the spirit and scope of the invention.
Claims (26)
1. A touch display device, comprising:
the touch display driving circuit is used for driving the touch display panel;
a touch operation circuit coupled to the touch display driving circuit, wherein the touch operation circuit obtains a control right in a normal mode to obtain touch sensing data related to the touch display panel from the touch display driving circuit, and obtains the control right in a burning mode to burn program codes into the touch operation circuit; and
and the processor is coupled with the touch display driving circuit to provide the program code, wherein the processor provides the program code to the touch display driving circuit in the burning mode and controls the touch display driving circuit to obtain the control right.
2. The touch display device of claim 1, wherein the touch display driver circuit comprises:
the display driving circuit is used for driving the touch display panel to display images;
a touch sensing circuit for detecting a touch event on the touch display panel to generate the touch sensing data; and
and the control circuit is coupled with the display driving circuit and the touch sensing circuit, and notifies the touch computing circuit in the normal mode so that the touch computing circuit obtains the touch sensing data from the touch display driving circuit, and resets the touch computing circuit in the reset mode.
3. The touch display device of claim 2, wherein the touch sensing circuit comprises:
an analog front end circuit for receiving a touch signal from the touch display panel; and
an analog-to-digital conversion circuit coupled to the analog front-end circuit for converting the touch signal into the touch sensing data.
4. The touch display device of claim 1, wherein the touch arithmetic circuit comprises a microcontroller and the processor comprises an application processor.
5. The touch display device of claim 1, wherein in the normal mode, the touch arithmetic circuit executes the program code to perform touch arithmetic operation on the touch sensing data to obtain position information of a touch event on the touch display panel.
6. The touch display device as claimed in claim 5, wherein in the normal mode, the touch arithmetic circuit returns the position information to the touch display driving circuit, and the touch display driving circuit notifies the processor by a first interrupt signal, so that the processor obtains the position information from the touch display driving circuit.
7. The touch display device as claimed in claim 1, wherein the touch display driving circuit uses a reset signal and an interrupt signal to switch the operation mode of the touch operation circuit.
8. The touch display device of claim 7,
when the reset signal is at a first logic level, the operation mode of the touch operation circuit is switched to a reset mode;
when the interrupt signal is at a third logic level during a transition period of the reset signal from the first logic level to a second logic level, the operation mode of the touch operation circuit is switched from the reset mode to the normal mode, and the touch operation circuit obtains the control right; and
when the interrupt signal is at a fourth logic level during the transition period of the reset signal, the operation mode of the touch operation circuit is switched from the reset mode to the programming mode, and the touch operation circuit returns the control right to the touch display driving circuit.
9. The touch display device as recited in claim 7, wherein the touch display driver circuit maintains the reset signal at a first logic level during a period when the processor resets the touch display driver circuit to maintain the operation mode of the touch arithmetic circuit in a reset mode.
10. An operation method of a touch display device comprises the following steps:
a burning operation step, in which a program code is provided to a touch display driving circuit by a processor in a burning mode and the touch display driving circuit is controlled to obtain a control right, so that the program code is burnt into a touch arithmetic circuit by the touch display driving circuit, wherein the touch arithmetic circuit is externally hung on the touch display driving circuit; and
a normal operation step of driving the touch display panel by the touch display driving circuit in a normal mode, and obtaining the control right by the touch operation circuit to obtain touch sensing data related to the touch display panel from the touch display driving circuit.
11. The method of operation of claim 10, wherein the step of normally operating further comprises:
the program code is executed by the touch operation circuit to perform touch algorithm operation on the touch sensing data to obtain position information of a touch event on the touch display panel.
12. The method of operation of claim 11, wherein the step of normally operating further comprises:
the touch operation circuit transmits the position information back to the touch display driving circuit; and
the touch display driving circuit outputs a first interrupt signal to inform the processor, so that the processor obtains the position information from the touch display driving circuit.
13. The method of operation of claim 10, further comprising:
and switching the operation mode of the touch operation circuit by the touch display driving circuit by using a reset signal and an interrupt signal.
14. The method of operation of claim 13, wherein the switching mode step further comprises:
when the reset signal is at a first logic level, switching the operation mode of the touch operation circuit to a reset mode;
when the interrupt signal is at a third logic level during a transition period of the reset signal from the first logic level to a second logic level, switching the operation mode of the touch operation circuit from the reset mode to the normal mode, and obtaining the control right by the touch operation circuit; and
when the interrupt signal is at the fourth logic level during the transition period of the reset signal, the operation mode of the touch operation circuit is switched from the reset mode to the programming mode, and the control right is returned to the touch display driving circuit.
15. The method of operation of claim 10, further comprising:
during the period of resetting the touch display driving circuit by the processor, the touch display driving circuit maintains a reset signal at a first logic level so as to maintain the operation mode of the touch operation circuit at a reset mode.
16. A touch display driving circuit includes:
the display driving circuit is used for driving the touch display panel to display images;
a touch sensing circuit for detecting a touch event on the touch display panel to generate touch sensing data; and
a control circuit coupled to the display driving circuit and the touch sensing circuit, wherein
In the normal mode, the control circuit gives control right to the touch computing circuit and informs the touch computing circuit to make the touch computing circuit obtain the touch sensing data from the touch display driving circuit, wherein the touch computing circuit is externally hung on the touch display driving circuit,
in a recording mode, the control circuit retrieves the control right to record a program code into the touch operation circuit, and
in the reset mode, the control circuit resets the touch operation circuit.
17. The touch display driver circuit of claim 16, wherein the touch sensing circuit comprises:
an analog front-end circuit for receiving a touch signal from the touch display panel; and
an analog-to-digital conversion circuit coupled to the analog front-end circuit for converting the touch signal into the touch sensing data.
18. The touch display driving circuit according to claim 16, wherein in the normal mode, the touch arithmetic circuit executes the program code to perform a touch algorithm operation on the touch sensing data to obtain position information of the touch event on the touch display panel, the touch arithmetic circuit transmits the position information back to the control circuit, and the control circuit notifies a processor via a first interrupt signal to enable the processor to obtain the position information from the touch display driving circuit.
19. The touch display driver circuit according to claim 16, wherein the control circuit uses a reset signal and an interrupt signal to switch the operation mode of the touch arithmetic circuit.
20. The touch display driver circuit of claim 19,
when the reset signal is at a first logic level, the operation mode of the touch operation circuit is switched to a reset mode;
when the interrupt signal is at a third logic level during a transition period in which the reset signal transitions from the first logic level to a second logic level, the operation mode of the touch operation circuit is switched from the reset mode to the normal mode, and the control circuit gives the control right to the touch operation circuit; and
when the interrupt signal is at a fourth logic level during the transition period of the reset signal, the operation mode of the touch operation circuit is switched from the reset mode to the programming mode, and the control circuit retrieves the control right.
21. The touch display driver circuit of claim 19, wherein the control circuit maintains the reset signal at a first logic level during a period when the processor resets the touch display driver circuit to maintain the operation mode of the touch arithmetic circuit in a reset mode.
22. A touch arithmetic circuit, comprising:
a memory; and
and the microcontroller is coupled to the memory, acquires control power in a normal mode to acquire touch sensing data related to the touch display panel from the touch display driving circuit, and returns the control power to the touch display driving circuit in a burning mode to enable the touch display driving circuit to burn program codes into the memory, and the touch operation circuit is externally hung on the touch display driving circuit.
23. The touch-sensing operation circuit of claim 22, wherein in the normal mode, the microcontroller executes the program code to perform touch algorithm operation on the touch-sensing data to obtain position information of a touch event on the touch-sensing display panel.
24. The touch-sensing operation circuit of claim 23, wherein in the normal mode, the microcontroller returns the position information to the touch-sensing display driving circuit.
25. The touch-sensing operation circuit as claimed in claim 22, wherein the microcontroller switches the operation mode of the touch-sensing operation circuit according to a reset signal and an interrupt signal output by the touch-sensing display driving circuit.
26. The touch-sensing operation circuit of claim 25, wherein,
when the reset signal is at a first logic level, the microcontroller switches the operation mode of the touch operation circuit into a reset mode;
when the interrupt signal is at a third logic level during a transition period of the reset signal from the first logic level to a second logic level, the microcontroller switches the operation mode of the touch operation circuit from the reset mode to the normal mode, and the microcontroller obtains the control right; and
when the interrupt signal is at the fourth logic level during the transition period of the reset signal, the microcontroller switches the operation mode of the touch operation circuit from the reset mode to the programming mode, and returns the control right to the touch display driving circuit.
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| CN201810140248.6A CN110147167B (en) | 2018-02-11 | 2018-02-11 | Touch display driving circuit, operation circuit, display device and operation method thereof |
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| CN201810140248.6A CN110147167B (en) | 2018-02-11 | 2018-02-11 | Touch display driving circuit, operation circuit, display device and operation method thereof |
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| 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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|---|---|---|---|---|
| CN101825962A (en) * | 2009-03-04 | 2010-09-08 | 联咏科技股份有限公司 | Touch control device for saving electrical energy and related method thereof |
| CN102929460A (en) * | 2012-08-31 | 2013-02-13 | 友达光电股份有限公司 | Touch display device and display driving method |
| CN104423690A (en) * | 2013-08-20 | 2015-03-18 | 瑞鼎科技股份有限公司 | Drive circuit with noise immunity function |
| CN107390910A (en) * | 2017-02-22 | 2017-11-24 | 友达光电股份有限公司 | Touch array and driving method |
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| US10698522B2 (en) * | 2016-04-27 | 2020-06-30 | Qualcomm Incorporated | Variable rate display interfaces |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101825962A (en) * | 2009-03-04 | 2010-09-08 | 联咏科技股份有限公司 | Touch control device for saving electrical energy and related method thereof |
| CN102929460A (en) * | 2012-08-31 | 2013-02-13 | 友达光电股份有限公司 | Touch display device and display driving method |
| CN104423690A (en) * | 2013-08-20 | 2015-03-18 | 瑞鼎科技股份有限公司 | Drive circuit with noise immunity function |
| CN107390910A (en) * | 2017-02-22 | 2017-11-24 | 友达光电股份有限公司 | Touch array and driving method |
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