Disclosure of Invention
The main objective of the present application is to provide a driving system for a display panel to realize the driving of a Full In-Cell display panel.
In order to achieve the above object, according to one aspect of the present application, there is provided a driving system of a display panel, which is a Full in-cell display panel, comprising: a lighting unit for providing image information; a signal analysis unit electrically connected to the lighting unit and the display panel, respectively, for processing the image information to obtain a source driving signal and an array substrate row driving signal, and transmitting the source driving signal to the display panel; the touch simulation unit is respectively and electrically connected with the display panel and the signal analysis unit, and is used for processing and combining the array substrate row driving signals and the touch scanning signals to obtain driving signals of the display panel; the time sequence control unit is electrically connected with the touch control simulation unit and generates a time sequence control signal to control the time sequence of the driving signal.
Further, the driving system further includes: and a connection unit electrically connected to the display panel, the lighting unit, the signal analysis unit, and the touch simulation unit, respectively, wherein the lighting unit is electrically connected to the signal analysis unit through the connection unit, the signal analysis unit is electrically connected to the touch simulation unit through the connection unit, the signal analysis unit is electrically connected to the display panel through the connection unit, and the touch simulation unit is electrically connected to the display panel through the connection unit.
Further, the lighting unit includes an HDMI interface or a GPIO interface, and the lighting unit and the connection unit are electrically connected through the HDMI interface or the GPIO interface.
Further, the lighting unit further includes a power interface, and the lighting unit is electrically connected to the timing control unit through the power interface to supply a voltage to the timing control unit.
Further, the touch simulation unit includes: a scan signal generating circuit for generating the touch scan signal; a signal processing circuit electrically connected to the signal analysis unit and/or the scanning signal generation circuit, for adjusting the period and/or amplitude of the touch scanning signal generated by the array substrate row driving signal and/or the scanning signal generation circuit output by the signal analysis unit; and a switching circuit electrically connected to the signal processing circuit and the timing control unit, respectively, the timing control unit controlling a timing of the switching circuit, the switching circuit being configured to combine the touch scan signal and the array substrate row driving signal output from the signal processing circuit into the driving signal.
Further, the touch simulation unit further includes: the touch detection circuit is electrically connected with the display panel and the switch circuit, and the touch scanning signals in the driving signals are transmitted to the touch detection circuit so as to perform touch scanning on the display panel and output touch scanning data; the analog-to-digital conversion circuit is electrically connected with the touch detection circuit and the time sequence control unit, converts the touch scanning data into digital signals and transmits the digital signals to the time sequence control unit.
Further, the driving system further includes: the upper computer is electrically connected with the time sequence control unit and used for displaying the touch scanning data processed by the time sequence control unit.
Further, the touch simulation unit includes a touch simulation board.
Further, the timing control unit includes an FPGA development board.
By applying the technical scheme of the application, the driving system analyzes an image signal into a Source driving (Source) signal and an Array substrate row driving (GOA) signal through the signal analysis unit, transmits the Source signal to the display panel, transmits the GOA signal to the touch simulation unit, combines the GOA signal with a touch scanning signal to form a driving signal of a Full in-cell display panel, and the time sequence control unit generates a time sequence control signal to control the driving signal, scans the touch signal in one time period and scans the GOA signal in the other time period, thereby realizing touch driving and display driving of the display panel.
Detailed Description
It should be noted that the following detailed description is illustrative and is intended to provide further explanation of the application. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.
It will be understood that when an element such as a layer, film, region, or substrate is referred to as being "on" another element, it can be directly on the other element or intervening elements may also be present. Also, in the description, when an element is described as being "connected" to another element, the element may be "directly connected" to the other element or "electrically connected" to the other element through a third element.
As described In the background art, in the prior art, since the Full In-Cell display panel meets the light and thin requirements of electronic products, the application provides a driving system for a display panel for driving the display panel to detect the working state of the display panel.
In an exemplary embodiment of the present application, a driving system for a display panel is provided, wherein the display panel is a Full in-cell display panel, as shown in fig. 1, the driving system includes a lighting unit 3, a signal analyzing unit 4, a touch simulation unit 5, and a timing control unit 6.
Wherein the lighting unit 3 is used for providing image information; the signal analysis unit 4 is electrically connected to the lighting unit 3 and the display panel 1, respectively, and processes the image information to obtain a Source signal and a GOA signal, and the signal analysis unit 4 transmits the Source signal to the display panel 1. The touch simulation unit 5 is electrically connected to the display panel 1 and the signal analysis unit 4, and processes and combines the GOA signal and the touch scan signal to obtain a driving signal of the display panel 1. The touch scanning signal is a scanning signal of the touch signal. The timing control unit 6 is electrically connected to the touch analog unit 5, and is configured to generate a timing control signal to control an operation timing of the driving signal.
In the driving system, the signal analysis unit 4 analyzes the image signal into the Source signal and the GOA signal, and transmits the Source signal to the display panel 1, and transmits the GOA signal to the touch simulation unit 5, so as to combine with the touch scanning signal to form the driving signal of the Full in-cell display panel, and the timing control unit 6 generates the timing control signal to control the driving signal, so that the touch signal is scanned in one time period, the GOA signal is scanned in another time period, and further the touch driving and the display driving of the display panel 1 are realized.
In order to facilitate connection of the display panel 1 with other structures, in another embodiment of the present application, as shown in fig. 1, the driving system further includes a connection unit 2 electrically connected to the display panel 1, the lighting unit 3, the signal analysis unit 4, and the touch simulation unit 5, wherein the lighting unit 3 is electrically connected to the signal analysis unit 4 through the connection unit 2, and further transmits image information to the signal analysis unit 4 through the connection unit 2. The signal analysis unit 4 is electrically connected to the touch simulation unit 5 through the connection unit 2, and further transmits the GOA signal analyzed by the signal analysis unit 4 to the display panel 1 through the connection unit 2. The signal analysis unit 4 is electrically connected to the display panel 1 through the connection unit 2, and the Source signal obtained by the signal analysis unit 4 is transmitted to the display panel 1 through the connection unit 2. The touch simulation unit 5 is electrically connected to the display panel through the connection unit 2, and further transmits a corresponding driving signal to the display panel 1 through the connection unit 2.
The connection unit 2 may be any connection structure available in the art, and a person skilled in the art may select a connection unit 2 of a suitable structure according to the actual situation.
In one embodiment of the present application, the connection unit 2 is a connection board. Thus, the connection between the units is more convenient, and the normal and efficient operation of the driving system is effectively ensured.
In order to facilitate the electrical connection between the lighting unit and the connection unit 2, in an embodiment of the present application, the lighting unit 3 includes a high-definition multimedia (High Definition Multimedia Interface, abbreviated as HDMI) interface or a general purpose input/output (General Purpose Input Output, abbreviated as GPIO) interface, and is further electrically connected to the connection unit 2 through the HDMI interface or the GPIO interface. Of course, the interface between the lighting unit and the connection unit 2 of the present application is not limited to the above connection method, and a person skilled in the art may select an appropriate connection interface according to the actual situation.
In another embodiment of the present application, the lighting unit 3 further includes a power interface, and the lighting unit 3 is electrically connected to the timing control unit 6 through the power interface to provide a voltage to the timing control unit 6.
In another embodiment of the present application, the touch simulation unit 5 includes a scan signal generating circuit, a signal processing circuit and a switch circuit. The scanning signal generating circuit is used for generating the touch scanning signal; the signal processing circuit is electrically connected with the signal analysis unit 4 and/or the scanning signal generation circuit, and is used for adjusting the period and/or amplitude of the array substrate row driving signal output by the signal analysis unit 4 and/or the touch scanning signal generated by the scanning signal generation circuit; the switching circuit is electrically connected to the signal processing circuit and the timing control unit 6, respectively, and the timing control unit 6 controls the timing of the switching circuit, and the switching circuit is configured to combine the touch scanning signal and the GOA signal output from the signal processing circuit into the driving signal.
Note that the Source signal and/or the GOA signal outputted from the signal analysis unit 4 are not necessarily the Source signal and/or the GOA signal directly obtained by analysis, and may be a signal obtained by processing such as amplifying the Source signal and/or the GOA signal after analysis.
In order to facilitate the detection of the operation of the Full in-cell display panel by the driving system, in one embodiment of the present application, the touch simulation unit 5 further includes a touch detection circuit and an analog-to-digital conversion circuit, the touch detection circuit is electrically connected with the display panel 1 and the switch circuit, and the touch scanning signal in the driving signal is transmitted to the touch detection circuit to perform touch scanning on the display panel 1 and output touch scanning data; the analog-to-digital conversion circuit is electrically connected with the touch detection circuit and the time sequence control unit 6, converts the touch scanning data into digital signals and transmits the digital signals to the time sequence control unit 6.
In still another embodiment of the present application, as shown in fig. 1, the driving system further includes an upper computer 7, where the upper computer 7 is electrically connected to the timing control unit 6, and is configured to display the touch scan data processed by the timing control unit 6, specifically, may be displayed on a PC interface, and the upper computer 7 may further set a touch operation parameter to optimize a touch effect. The operation of the display panel 1 can be better verified by the host computer 7.
Of course, the above analysis signal unit of the present application is not limited to the above chip, and those skilled in the art may select other suitable structures according to practical situations.
In an embodiment of the application, the touch simulation unit includes a touch simulation board. Of course, the touch simulation unit of the present application is not limited to the touch simulation board, and may include touch simulation units with other structures in the prior art.
The timing control unit 6 of the present application may be any field programmable gate array (Field Programmable GATE ARRAY, abbreviated as FPGA) development structure available in the prior art, and a person skilled in the art may select an appropriate FPGA development structure as the timing control unit 6 of the present application according to the actual situation.
In one embodiment of the present application, the timing control unit 6 includes an FPGA development board. This can facilitate the use of the drive system.
In an embodiment of the present application, the display panel may be a Full in-cell LCD display panel or a Full in-cell OLED display panel, and those skilled in the art may apply the driving system to driving of a suitable display panel according to practical situations.
In one embodiment of the application, the driving system is used for verifying the Full in-cell OLED display panel, and combines the display chip with the touch module to realize TDDI working modes; as initial verification, the cost of developing a Touch DISPLAY DRIVER Integration (TDDI) chip is saved; the split cathode type Full in-cell OLED display panel can be successfully driven; and the degree of freedom of combining the OLED GOA signal and the touch scanning signal is high; the feasibility of dividing the OLED cathode to realize Full in-cell OLED is verified.
The driving system of the application not only can verify the work of the display panel, but also can be integrated in the display device in the actual application process to drive the display panel so as to control the work of the display device.
From the above description, it can be seen that the above embodiments of the present application achieve the following technical effects:
The driving system of the application analyzes the image signal into the Source signal and the GOA signal through the signal analysis unit, transmits the Source signal to the display panel, transmits the GOA signal to the touch simulation unit, combines the GOA signal with the touch scanning signal to form the driving signal of the Full in-cell display panel, and the time sequence control unit generates the time sequence control signal to control the driving signal, scans the touch signal in one time period and scans the GOA signal in the other time period, thereby realizing the driving of the touch of the display panel and the driving of the display, and successfully simulating TDDI work.
The above description is only of the preferred embodiments of the present application and is not intended to limit the present application, but various modifications and variations can be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.