TWI550490B - Driving displaying system of interrupt sensing in display area and method thereof - Google Patents

Description

Drive display system and method thereof for interrupt scanning in display interval

The invention relates to a driving display system and a method thereof for a touch display device, in particular to a driving display system and a method thereof for interrupting a display interval to scan a touch point to increase scanning frequency and interrupt scanning in a display interval.

In recent years, with the popularization and vigorous development of mobile devices, touch display devices have become one of the components that are indispensable.

In general, a conventional touch display device usually performs display and touch scanning in a time division multiplexing manner, wherein display is performed in a display interval; touch scanning is performed in a blanking interval, and in a blanking interval The image data is not output, so as to reduce noise interference during the touch scanning process. However, since the picture update frequency of the driving chip is 60 Hz, the frequency of the touch scanning is also 60 Hz, which causes the frequency of the touch scanning to be insufficient, which causes a problem that the reporting rate of the touch display device is not good.

In view of this, some manufacturers have proposed to adjust the number of scans of the touch signal so that they have different number of touch signal scans in the data update interval and the blanking interval, so as to increase the touch while avoiding noise interference as much as possible. Scan frequency to improve touch sensitivity. However, due to the aforementioned Since the display interval is not changed to increase the touch scan frequency, the touch scan frequency that can be improved is very limited. Therefore, this method still cannot effectively solve the problem of poor report rate of the touch display device.

In summary, it can be seen that the problem of poor reporting rate of the touch display device has been long in the prior art. Therefore, it is necessary to propose an improved technical means to solve this problem.

The invention discloses a driving display system and a method thereof for interrupting scanning in a display interval.

Firstly, the present invention discloses a driving display system for interrupting scanning in a display interval, which is applied to a touch display device, and the system comprises: a receiving module, a driving module, an interrupting module and a scanning module. The receiving module is configured to receive image data from the system single chip; the driving module is configured to continuously drive the plurality of sources and the plurality of gates, so that the touch display device displays the image according to the image data, and in the blanking interval, The energy is disabled to stop updating the image data; the interrupt module is configured to interrupt the scanning of the gate to form a non-display interval in the display interval, and in the non-display interval, the energy source is disabled to stop updating the image data; The module is configured to continuously scan the touch points in the non-display interval and the blanking interval, and transmit the touch points to the system single chip for touch processing.

In addition, the present invention discloses a driving display method for interrupting scanning in a display interval, which is applied to a touch display device, and the steps include: receiving image data from a system single chip; continuously driving a plurality of sources and a plurality of gates to make a touch The control display device displays the image according to the image data, and in the blanking interval, the energy barrier is stopped to update the image data; in the display interval, the scan of the gate is interrupted to form a non-display interval, and the non-display interval is eliminated. In the hidden interval, the energy is disabled to stop updating the image data; and in the non-display interval, the touch point is continuously scanned, and the touch point is transmitted to the system single chip for touch processing.

The system and method disclosed in the present invention are different from the prior art in that the present invention interrupts the scanning of the gate to form a non-display interval in the display interval of the touch display device, and in the non-display interval, The energy ban is stopped to update the image data, and the touch points are continuously scanned to increase the touch scanning frequency.

Through the above technical means, the present invention can achieve the technical effect of improving the reporting rate of the touch display device.

110‧‧‧ receiving module

120‧‧‧Drive Module

130‧‧‧Interrupt module

140‧‧‧ scan module

310, 410‧‧‧ display interval

420‧‧‧non-display interval

Step 210‧‧‧ Receive an image data from a system single chip

Step 220 ‧ ‧ continuously driving the plurality of sources and the plurality of gates, so that the touch display device displays the image according to the image data

Step 230‧‧‧ interrupting scanning of the gates to form at least one non-display interval in a display interval, and in the non-display interval, disabling the sources to stop updating the image data

Step 235‧‧‧ In a blanking interval, the sources are disabled to stop updating the image data, and the touch points are continuously scanned and transmitted to the system single chip for touch processing

Step 240‧‧ In the non-display interval, continuously scanning at least one touch point, and transmitting the touch point to the system single chip for touch processing

1 is a system block diagram of a drive display system for interrupt scanning in a display interval of the present invention.

2 is a flow chart of a method for driving display method for interrupt scanning in a display interval according to the present invention.

FIG. 3 is a schematic diagram of a conventional touch sensing signal.

FIG. 4 is a schematic diagram of a touch sensing signal to which the present invention is applied.

The embodiments of the present invention will be described in detail below with reference to the drawings and embodiments, so that the application of the technical means to solve the technical problems and achieve the technical effects can be fully understood and implemented.

Before describing the driving display system and the method thereof for interrupting scanning in the display interval disclosed in the present invention, the nouns defined by the present invention are described. The non-display interval according to the present invention means that the gate is stopped after the display interval is interrupted. Scanning and the source stops updating the interval of the image data, in practice In practice, the blanking interval can also be regarded as a non-display interval. The only difference is that it is not generated by interrupting the display interval, which will be described later in detail with the schema.

The driving display system and method for interrupting scanning in the display interval of the present invention will be further described below with reference to the drawings. Please refer to "FIG. 1" first, and "FIG. 1" is a system for driving display system for interrupt scanning in the display interval of the present invention. Block diagram, the system includes: a receiving module 110, a driving module 120, an interrupt module 130, and a scanning module 140. The receiving module 110 is configured to receive image data from the system single chip. In actual implementation, the image data can be stored in a memory in a system single chip or a memory electrically connected to a system single chip, such as a scratchpad, a cache memory, and a random access memory.

The driving module 120 is configured to continuously drive the plurality of sources and the plurality of gates, so that the touch display device displays the image according to the image data. Wherein, the source in the touch display device is used to transmit image data and is presented in the form of voltage, and the gate is used as a switch to control each scan line so as to be up-down or bottom-up. The order opens. In practical implementation, the driving module is in the blanking interval, and the energy source can be disabled to stop updating the image data. Since the manner in which the driving source and the gate cause the touch display device to present an image according to the image data is a conventional technique, no further description is provided herein.

The interrupt module 130 is configured to interrupt the scanning of the gate to form a non-display interval in the display interval, and disable the source to stop updating the image data in the non-display interval. In actual implementation, in order to avoid interference caused by the voltage of the source transmitting image data, the energy source is disabled in the non-display interval to stop updating the image data. In addition, the interrupt module 130 can interrupt the scan of the gate at a fixed time interval. The fixed time interval is any time interval that can be adjusted (the time unit can be milliseconds or microseconds) to match the minimum time limit of different scanning modules. It should be noted that too short a time interval may result in insufficient time for touch detection. The non-display area when the number of interruptions is increased The more the number between the two, the higher the reporting rate. In other words, the number of non-display intervals is positively correlated with the reporting rate.

The scanning module 140 is configured to continuously scan the touch point in the non-display interval, and transmit the touch point to the system single chip for touch processing. In addition, it is assumed that within the blanking interval, the scanning module 140 can also continuously scan the touch point and transmit it to the system single chip for touch processing. In actual implementation, the scanning touch point can scan a single touch point or a plurality of touch points. Since the technique for scanning the touch point is a conventional technique, no further description is provided herein.

Next, please refer to FIG. 2, which is a driving display method for interrupt scanning in the display interval of the present invention, which is applied to the touch display device, and the steps include: receiving image data from the system single chip (step 210) Continuously driving the plurality of sources and the plurality of gates to cause the touch display device to present the image according to the image data (step 220); in the display interval, interrupting the scanning of the gate to form a non-display interval, and in the non- In the display interval, the energy-free pole stops updating the image data (step 230); in the non-display interval, the touch point is continuously scanned, and the touch point is transmitted to the system single-chip for touch processing (step 240). Through the above steps, the scanning of the gate can be interrupted in the display interval of the touch display device to form a non-display interval, and in the non-display interval, the energy source is disabled to stop updating the image data, and the scanning is continued. Control points to increase the touch scanning frequency.

In addition, in step 230, it is assumed that the source is disabled in the blanking interval to stop updating the image data, and the touch point is continuously scanned and transmitted to the system single chip for touch processing (step 235). In other words, the same processing can be performed in both the non-display interval and the blanking interval.

The following is a description of the following embodiments in conjunction with "3" and "4". Please refer to "3" and "3" for a schematic diagram of a conventional touch sensing signal. It contains: Vertical sync signal (Vertical sync, VSYNC, VS), vertical sync signal leading edge (Vsync Front Porch, VFP), vertical sync signal trailing edge (Vsync Back Porch, VBP), enable signal (ENABLE) and touch signal (TE1) ). When the enable signal is high, it represents the display interval 310, and when it is low, it represents the blanking interval. In the display interval 310, the source and the gate are continuously driven, so that the touch display device displays the image according to the image data without performing the touch scanning/sensing processing; in the blanking interval, the energy is disabled to stop updating. Image data, and continuously scan the touch points and transfer them to the system single chip for touch processing.

As shown in FIG. 4, FIG. 4 is a schematic diagram of a touch sensing signal to which the present invention is applied. The difference from the "Fig. 3" is that the interrupt module 130 interrupts the display section 410 to form the non-display section 420. In this way, the frequency of the touch scan can be effectively increased, for example, from 60 Hz to 240 Hz, thereby improving the report rate of the touch display device. In particular, since the screen update in the display section 410 determines the data content in the horizontal direction from the source, and determines whether the vertical direction is updated to the next scan line by the gate. Therefore, when the display interval 410 is interrupted, the driving chip controls the source and the gate, so that the picture is no longer updated to increase the reporting rate of the touch. Even if the update of the screen becomes discontinuous due to the interruption, for each scanning line, as long as the frame update rate (frame rate) is maintained at 60 Hz, there is no abnormality in the human visual view.

In summary, it can be seen that the difference between the present invention and the prior art is that the scanning of the gate is interrupted to form a non-display interval in the display interval of the touch display device, and the energy barrier is disabled in the non-display interval. In order to stop updating the image data and continuously scanning the touch points, so as to increase the touch scanning frequency, the technical problem can be solved by the prior art, thereby achieving the technical effect of improving the reporting rate of the touch display device.

While the present invention has been described above in the foregoing embodiments, it is not intended to limit the invention, and the invention may be modified and modified without departing from the spirit and scope of the invention. The scope of patent protection shall be subject to the definition of the scope of the patent application attached to this specification.

110‧‧‧ receiving module

120‧‧‧Drive Module

130‧‧‧Interrupt module

140‧‧‧ scan module

Claims (8)

A driving display system for interrupting scanning in a display interval is applied to a touch display device, the system comprising: a receiving module for receiving an image data from a system single chip; and a driving module for continuously driving The plurality of sources and the plurality of gates enable the touch display device to present images according to the image data, and in a blanking interval, disable the sources to stop updating the image data; Intersecting the scans of the gates to form at least one non-display interval in a display interval, and in the non-display interval, disabling the sources to stop updating the image data; and a scanning module, And continuously scanning at least one touch point in the non-display interval and the blanking interval, and transmitting the touch point to the system single chip for touch processing. A driving display system for interrupting scanning in a display interval according to the first aspect of the patent application, wherein the interrupt module interrupts scanning of the gates at a fixed time interval, the fixed time interval being an adjustable arbitrary time interval. A drive display system for interrupting scanning in a display interval according to the first aspect of the patent application, wherein the number of the non-display intervals is positively correlated with a report rate. A driving display system for interrupting scanning in a display interval according to the first aspect of the patent application, wherein the system single chip is electrically connected to a memory to store the image data, the memory comprising a temporary memory, a cache memory, and a random memory. Take the memory. A driving display method for interrupting scanning in a display interval is applied to a touch display device, the method comprising: receiving an image data from a system single chip; continuously driving the plurality of sources and the plurality of gates to enable the touch The display device displays the image according to the image data, and disables the sources to stop updating the image data in a blanking interval; interrupting scanning of the gates to form at least one non-display interval in a display interval And in the non-display interval, the sources are disabled to stop updating the image data; and in the non-display interval and the blanking interval, at least one touch point is continuously scanned, and the touch is The handle is transmitted to the system single chip for touch processing. A driving display method for interrupting scanning in a display interval according to the fifth aspect of the patent application, wherein the method interrupts scanning of the gates at a fixed time interval, the fixed time interval being an adjustable arbitrary time interval. A driving display method for interrupting scanning in a display interval according to item 5 of the patent application scope, wherein the number of the non-display sections is positively correlated with a report rate. A driving display method for interrupting scanning in a display interval according to the fifth aspect of the patent application, wherein the system single chip is electrically connected to a memory to store the image data, the memory includes a temporary memory, a cache memory, and a random memory. Take the memory.