CN114327315A - Display data transmission system, method, electronic device, and storage medium - Google Patents
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Abstract
The disclosure relates to a display data transmission system, a method, an electronic device and a storage medium, wherein the system comprises at least two main screen display driving chips for driving main screen display and an auxiliary screen display driving chip for driving auxiliary screen display; a first display driving chip of the at least two main screen display driving chips is in communication connection with a main control chip of the electronic equipment through a first signal line, and the first display driving chip is also in communication connection with the auxiliary screen display driving chip. The system can realize independent display of the main screen and the auxiliary screen without setting a switch IC, and can control the display of the main screen through at least two main screen display driving chips, thereby improving the resolution and the pixel density of the main screen and ensuring that the display effect of the main screen is better.
Description
Technical Field
The present disclosure relates to the field of electronic devices, and in particular, to a display data transmission system, a display data transmission method, an electronic device, and a storage medium.
Background
The existing AP (main control chip) can support the output of two sets of MIPI signals (display signals) for display, one set for the main screen and one set for the auxiliary screen, and each DDIC (display driver chip) needs the AP to provide one set of MIPI signals, so that the main screen and the auxiliary screen can only use one DDIC.
The number of source lines of an Integrated Circuit (IC) is limited, if one DDIC is used for controlling the display of a main screen and one DDIC is used for controlling the display of an auxiliary screen, because the size of the auxiliary screen is smaller, a better display effect can be obtained by generally using one DDIC to control the display of the DDIC, but because the size of the main screen is larger (generally 7 feet-8 inches), if only one DDIC controller is used for displaying, the resolution ratio which can be supported by the DDIC is lower, the PPI (pixel density) of the main screen is lower, the visual effect particle sense of the main screen is heavy, and the display effect is poorer.
Disclosure of Invention
To overcome the problems in the related art, the present disclosure provides a display data transmission system, method, electronic device, and storage medium.
According to a first aspect of the embodiments of the present disclosure, a display data transmission system is provided, which is applied to an electronic device including a main screen and an auxiliary screen, where the system includes at least two main screen display driving chips for driving the main screen to display, and an auxiliary screen display driving chip for driving the auxiliary screen to display;
a first display driving chip of the at least two main screen display driving chips is in communication connection with a main control chip of the electronic equipment through a first signal line, and the first display driving chip is also in communication connection with the auxiliary screen display driving chip.
Optionally, a second display driver chip of the at least two main screen display driver chips is in communication connection with a main control chip of the electronic device through a second signal line.
Optionally, the at least two main screen display driver chips further include a third display driver chip, and the third display driver chip is in communication connection with the second display driver chip.
Optionally, the system further includes a first flexible circuit board connected to the first display driver chip, and a second flexible circuit board connected to the secondary screen display driver chip;
the system further comprises a third flexible circuit board, wherein the third flexible circuit board is electrically connected with the first flexible circuit board and the second flexible circuit board respectively, so that the first display driving chip is in communication connection with the auxiliary screen display driving chip.
According to a second aspect of the embodiments of the present disclosure, there is provided a display data transmission method applied to an electronic device including a main screen and a sub-screen, the method including:
the main control chip sends a first display signal to the first display driving chip through the first signal circuit according to the display states of the main screen and the auxiliary screen of the electronic equipment;
the first display driving chip identifies signal characteristics contained in the received first display signal and sends and/or retains a display signal with target signal characteristics.
Optionally, the method further comprises:
the main control chip sends a second display signal to the second display driving chip through a second signal line according to the display state of the main screen of the electronic equipment;
and the second display driving chip controls the main screen to display according to the received second display signal.
Optionally, the sending and/or retaining the display signal of the target signal feature includes:
the first display driving chip sends a display signal with a first sub-target signal characteristic to the sub-screen display driving chip, and keeps a display signal with a second sub-target signal characteristic to control the main screen and the sub-screen to display simultaneously, wherein the display signal with the first sub-target signal characteristic and the display signal with the second sub-target signal characteristic are both effective signals.
Optionally, the sending and/or retaining the display signal of the target signal feature includes:
and the first display driving chip sends a display signal with the third sub-target signal characteristic to the sub-screen display driving chip, and reserves a display signal with the fourth sub-target signal characteristic to control the main screen to display and the sub-screen not to display, wherein the display signal with the third sub-target signal characteristic is an invalid signal, and the display signal with the fourth sub-target signal characteristic is a valid signal.
Optionally, the sending and/or retaining the display signal of the target signal feature includes:
and the first display driving chip sends a display signal with a fifth sub-target signal characteristic to the sub-screen display driving chip, and reserves the display signal with a sixth sub-target signal characteristic to control the main screen not to display and the sub-screen to display, wherein the display signal with the sixth sub-target signal characteristic is an invalid signal, and the display signal with the fifth sub-target signal characteristic is a valid signal.
Optionally, the signal features are all display frame features.
Optionally, the frequency of the first display signal is twice the frequency of the second display signal.
According to a third aspect of the embodiments of the present disclosure, there is provided an electronic device, the electronic device including a main screen and an auxiliary screen, the electronic device including the display data transmission system according to the first aspect, the electronic device further including:
a processor;
a memory for storing processor-executable instructions;
wherein the processor is configured to perform the display data transmission method according to the second aspect.
According to a fourth aspect of embodiments of the present disclosure, there is provided a non-transitory computer-readable storage medium, wherein instructions, when executed by a processor of an electronic device, enable the electronic device to perform the display data transmission method according to the second aspect.
The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects: the system can realize independent display of the main screen and the auxiliary screen without setting a switch IC, and can realize control of main screen display through at least two main screen display driving chips, so that the resolution and pixel density of the main screen are improved, and the display effect of the main screen is better.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
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The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.
Fig. 1 is a schematic structural diagram of a display data transmission system in the related art.
Fig. 2 is a schematic structural diagram illustrating a display data transmission system according to an exemplary embodiment.
Fig. 3 is a schematic structural diagram illustrating a display data transmission system according to an exemplary embodiment.
FIG. 4 is a block diagram of an electronic device shown in accordance with an example embodiment.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the invention, as detailed in the appended claims.
Electronic devices having a primary screen and a secondary screen are becoming more common, such as folding cell phones. The folding mobile phone is one of the important directions for the development of the future mobile phone, and the mainstream forms of the folding mobile phone are as follows: after being unfolded, the front side is a main screen used for playing games, watching videos and the like, and after being folded, the back side comprises a secondary screen used for daily use of a user, such as calendar display, time display or telephone calling and the like.
In the related art, referring to fig. 1, two sets of display signals are realized by a MIPI switch (MIPI signal control switch) function to support three display driver chips. In terms of hardware, a switch circuit 10a (switch ic) is required, when the MIPI1 signal output by the main control chip 3a is a signal used by the sub-screen display driving chip 4a of the sub-screen 2a, the switch circuit 10a outputs the MIPI1 signal to the sub-screen display driving chip 4a through the MIPI 11 path, and when the MIPI1 signal output by the main control chip 3a is a signal used by the first display driving chip 5a of the main screen 1a, the switch circuit 10a outputs the MIPI1 signal to the first display driving chip 5a through the MIPI 12 path, and the switch circuit and the MIPI 2 signal received by the second display driving chip 6a of the main screen 1a are used for displaying of the main screen 1a together.
However, in the above technical solution, the MIPI1 signal output by the main control chip 3a is either a signal required by the sub-screen display driving chip 4a of the sub-screen 2a or a signal required by the first display driving chip 5a of the main screen 1a, that is, after the MIPI1 signal output by the main control chip 3a passes through the switch circuit 10a, only the MIPI 11 signal or the MIPI 12 signal can be output, and the MIPI 11 signal and the MIPI 12 signal cannot be output at the same time, so that the main screen 1a and the sub-screen 2a cannot be displayed at the same time. In addition, the switching circuit 10a with higher cost is used in the above technical solution, which leads to the increase of the overall cost of the electronic device.
To the problem that exists among the correlation technique, this disclosure provides a show data transmission system, and this system need not to set up switch circuit, can realize the independent demonstration of main screen and vice screen, and can realize showing through two at least main screen display driver chips control main screen, has promoted the resolution ratio and the pixel density of main screen to the display effect that makes the main screen is better.
In an exemplary embodiment, referring to fig. 2 or 3, a display data transmission system is provided, which is applied to an electronic device including a main screen 1 and a sub-screen 2 that are independent of each other, wherein a display area of the main screen 1 is larger than a display area of the sub-screen 2, and the system includes at least two main screen display driving chips disposed on the main screen 1, and a sub-screen display driving chip 4 disposed on the sub-screen 2. A first display driving chip 5 of the at least two main screen display driving chips is in communication connection with a main control chip 3 of the electronic equipment through a first signal line 8, and the first display driving chip 5 is also in communication connection with a secondary screen display driving chip 4.
In the system, the display of the main screen 1 is controlled by at least two main screen display driving chips, and the display of the auxiliary screen 2 is controlled by the first display driving chip 5 and the auxiliary screen 2 display chip, so that the independent display of the main screen 1 and the auxiliary screen 2 is realized. In addition, the display of the main screen 1 is controlled by at least two main screen display driving chips, so that the resolution and the pixel density of the main screen 1 with a large display area can be improved, and the display effect of the main screen 1 is improved. This system need not to set up switch IC, can realize the independent demonstration of main screen 1 and vice screen 2, when reducing electronic equipment hardware cost, can also improve the display effect of main screen 1, promotes user's visual experience.
In one example, referring to fig. 2 or 3, the electronic device is a folding screen mobile terminal, and the system further includes a first flexible circuit board 10 connected to the first display driving chip 5, and a second flexible circuit board 11 connected to the sub-screen display driving chip 4. The system further comprises a third flexible circuit board 12, wherein the third flexible circuit board 12 is electrically connected with the first flexible circuit board 10 and the second flexible circuit board 11 respectively, so that the first display driving chip 5 is in communication connection with the secondary screen display driving chip 4. Because folding screen mobile terminal's main screen 1 and vice screen 2 set up back to back, and main screen 1 still includes expansion state and fold condition, in order to guarantee signal transmission reliability and stability to ensure that processing technology can accomplish the course of working, consequently need set up three flexible circuit board that can buckle. Through setting up three flexible circuit board, can also dodge when having other hardware in mobile terminal, strengthen mobile terminal's the performance of arranging.
When the auxiliary screen 2 is required to display, the main control chip 3 transmits a display signal acting on the auxiliary screen 2 to the first display driving chip 5 through the first signal line 8, and after the first display driving chip 5 receives the display signal, the display signal is transmitted to the auxiliary screen display driving chip 4 through the first flexible circuit board 10, the third flexible circuit board 12 and the second flexible circuit board 11. And after the auxiliary screen display driving chip 4 of the auxiliary screen 2 receives the display signal, the auxiliary screen 2 is controlled to display.
When the display of the auxiliary screen 2 is not needed, the main control chip 3 transmits an invalid display signal acting on the auxiliary screen 2 to the first display driving chip 5 through the first signal line 8, and the first display driving chip 5 transmits the display signal to the auxiliary screen display driving chip 4 after receiving the display signal.
The system can improve the display effect of the main screen 1, can realize independent display of the main screen 1 and the auxiliary screen 2 without setting a switch IC, and is low in cost.
In an exemplary embodiment, a display data transmission system is provided, which is a further improvement of the above-mentioned system, and as shown in fig. 2 or 3, in the system, the second display driver chip 6 of at least two main screen display driver chips is communicatively connected with the main control chip 3 of the electronic device through a second signal line 9.
When the main screen 1 is required to display, the main control chip 3 transmits a display signal acting on the main screen 1 to the second display driving chip 6 through the second signal line 9, meanwhile, the main control chip 3 transmits a display signal acting on the main screen 1 to the first display driving chip 5 through the first signal line 8, and after the first display driving chip 5 and the second display driving chip 6 receive the display signal, the main screen 1 is controlled to display.
When the main screen 1 does not need to display, the main control chip 3 stops transmitting the display signal acting on the main screen 1 to the second display driving chip 6 through the second signal line 9, meanwhile, the main control chip 3 stops transmitting the display signal acting on the main screen 1 to the first display driving chip 5 through the first signal line 8, and the main screen 1 does not display. Or, when the main screen 1 does not need to display, the main control chip 3 transmits the invalid display signal acting on the main screen 1 to the second display driving chip 6 through the second signal line 9, and meanwhile, the main control chip 3 transmits the invalid display signal acting on the main screen 1 to the first display driving chip 5 through the first signal line 8, and the main screen 1 does not display.
In the system, the display of the main screen 1 is cooperatively controlled through the first display driving chip 5 and the second display driving chip 6, so that the resolution and the pixel density of the main screen 1 are improved, and the display effect of the main screen 1 is improved.
In an exemplary embodiment, a display data transmission system is provided, which is a further improvement of the above system, and as shown in fig. 3, at least two main screen display driver chips further include a third display driver chip 7, and the third display driver chip 7 is in communication connection with the second display driver chip 6.
In the system, the display of the main screen 1 is realized through the first display driving chip 5, the second display driving chip 6 and the third display driving chip 7, and the display effect of the main screen 1 is further improved.
In one embodiment, referring to fig. 3, when the main panel 1 displays, the main control chip transmits the second display signal to the second display driving chip 6 through the second signal line 9 at a frequency of 120Hz, that is, the second display driving chip 6 and the third display driving chip 7 share the second signal line 9. Since the main screen 1 displays at a frequency of 60Hz (usually, the refresh frequency of the display screen of the mobile terminal is 60Hz), and the second display signal needs to include a display signal for the second display driving chip 6 and the third display driving chip 7, in order to ensure the reliability and stability of signal transmission, and the display signals received by the second display driving chip 6 and the third display driving chip 7 are both in accordance with the refresh frequency of the main screen 1. The main control chip transmits a second display signal at 120Hz, wherein the second display driving chip 6 transmits the received second display signal to the third display driving chip 7 when the 2N +1 frame of the signal transmission process; the second display driving chip 6 retains the received second display signal at the 2N frame of the signal transmission process.
Through the mode, the three main screen display driving chips can jointly control the main screen 1 to display, the resolution and the pixel density of the main screen 1 are further improved, and the display effect is improved.
It should be noted that, when the refresh frequency of the display screen changes, for example, when the refresh frequency of the main screen 1 is 90Hz, the second display driving chip 6 and the third display driving chip share the same second signal line 9, so that the main control chip 3 sends the second display signal to the falling display driving chip 6 through the second signal line 9 at a frequency of 180 Hz.
Of course, it can be understood that, on the premise that the process can be implemented, when the number of the display driver chips for controlling the main screen 1 to display is larger, for example, when three display driver chips and four display driver chips share the same second signal line 9, the frequencies of the display signals received by each display driver chip are the same and are the refresh frequencies of the main screen 1, and in the transmission process, the transmission frequency of the main control chip 3 is a multiple of the display driver chips. For example, when three display driver chips share the same second signal line 9, the transmission frequency is three times the frequency of the signal received by each driver display chip. When the same second signal line 9 is shared by four display driver chips, the transmission frequency is four times the frequency of the signal received by each driver display chip.
The present disclosure further provides a display data transmission method, which is applied to the display data transmission system, and can improve the display effect of the main screen 1 and realize independent display of the main screen 1 and the auxiliary screen 2.
In an exemplary embodiment, referring to fig. 2, there is provided a display data transmission method applied to an electronic device including a main screen 1 and a sub-screen 2, the method including:
the main control chip 3 sends a first display signal to the first display driving chip 5 through the first signal line 8 according to the display states of the main screen 1 and the auxiliary screen 2 of the electronic device; the first display driving chip 5 recognizes signal characteristics included in the received first display signal, and transmits and/or retains a display signal having target signal characteristics. The term "hold" refers to that the display driving chip drives the display screen to which the display driving chip belongs to display according to the corresponding display signal. For example, in the present application, the first display driving chip 5 is a main screen display driving chip, which belongs to the main screen 1 and is used for driving the main screen 1 to display, and when the first display driving chip 5 retains a display signal with a certain target signal characteristic, the first display driving chip 5 drives the main screen 1 to display according to the display signal with the certain target signal characteristic.
Wherein the target signal characteristic is used to determine whether the first display signal acts on the primary screen 1 or the secondary screen 2, the target signal characteristic for example comprising a display frame characteristic. When the target signal feature comprises a display frame feature, the first display signal is determined to act on the main screen 1 or the auxiliary screen 2 through the frame where the first display signal is located.
In one example, the target signal characteristic is a display frame characteristic, in this example, the 2N +1 frame transmitted signal is a display signal having a first sub-target signal characteristic, and the 2N frame transmitted signal is a display signal having a second sub-target signal characteristic, where N is a positive integer greater than zero.
Referring to fig. 2, in the 2N +1 th frame, the main control chip 3 transmits a first display signal to the first display driving chip 5 through the first signal line 8, and since the first display signal is transmitted in the 2N +1 th frame, the first display signal is a display signal having a first target signal characteristic, and the first display driving chip 5 transmits the received display signal to the sub-screen display driving chip 4 for controlling the display of the sub-screen 2; in the 2N frame, the main control chip 3 transmits the first display signal to the first display driving chip 5 through the first signal line 8, and the first display signal is transmitted in the 2N frame, so that the first display signal is a display signal having the second target signal characteristic, and the first display driving chip 5 retains the display signal.
In an exemplary embodiment, there is provided a display data transmission method, as shown with reference to fig. 2, which is a further improvement of the above method, the method comprising: the main control chip 3 sends a second display signal to the second display driving chip 6 through a second signal line 9 according to the display state of the main screen 1 of the electronic device; and the second display driving chip 6 controls the main screen 1 to display according to the received second display signal.
The display state of the main screen 1 indicates whether the main screen 1 needs to be displayed. For example, in a state that the main screen 1 is required to display, the main control chip 3 transmits a second display signal to the second display driving chip 6 through the second signal line 9, and the second display driving chip 6 controls the main screen 1 to display according to the received second display signal; in the state that the main screen 1 is not needed to display, the main control chip 3 stops transmitting the second display signal to the second display driving chip 6 through the second signal line 9, and the main screen 1 does not display.
The main control chip 3 stops transmitting the second display signal to the second display driving chip 6 through the second signal line 9, and includes at least one of the following:
the main control chip 3 stops sending the second display signal;
the second signal line 9 stops transmitting the second display signal;
the second display driving chip 6 stops receiving the second display signal;
the second display signal is replaced with an invalid signal.
The display driving chip drives a corresponding display screen to display according to a certain display signal, and then the display signal is an effective information number. The display driving chip can not drive a corresponding display screen to display according to a certain display signal, and the display signal is an invalid signal; or, the display driving chip drives the corresponding display screen to display in a black screen mode according to a certain display signal, and then the display signal is also an invalid signal.
In an exemplary embodiment, there is provided a display data transmission method which is a further improvement of the above-described method, as shown with reference to fig. 2, in which the display states of the main screen 1 and the sub-screen 2 include at least one of:
the main screen 1 and the auxiliary screen 2 are displayed simultaneously;
the main screen 1 displays, and the auxiliary screen 2 does not display;
the main screen 1 is not displayed and the sub-screen 2 is displayed.
Wherein, when the main screen 1 and the sub-screen 2 are displayed simultaneously, the sending and/or maintaining the display signal of the target signal characteristic comprises:
the main control chip 3 sends a first display signal to the first display driving chip 5 through a first signal line 8, wherein the first display signal comprises a display signal with the characteristics of a first sub-target signal and a display signal with the characteristics of a second sub-target signal.
After receiving the first display signal, the first display driver chip 5 sends a display signal with a first sub-target signal characteristic to the sub-screen display driver chip 4, and the first display driver chip 5 reserves the display signal with a second sub-target signal characteristic to control the main screen and the sub-screen to display simultaneously. Wherein, the display signal with the first sub-target signal characteristic and the display signal with the second sub-target signal characteristic are both valid signals.
Meanwhile, the main control chip 3 sends a second display signal to the second display driving chip 6 through the second signal line 9.
And after receiving the display signal with the second sub-target signal characteristic, the sub-screen display driving chip 4 controls the sub-screen 2 to display the second display signal. The first display driving chip 5 receives a display signal with the first sub-target signal characteristic, and after the second display driving chip receives the second display signal, the first display driving chip 5 and the second display driving chip 6 drive the main screen 1 together to display.
Here, it should be noted that, in order to ensure the display effect of the main screen and the sub-screen, the frequencies of the display signal with the second sub-target signal characteristic received by the sub-screen display driver chip 4, the display signal with the first sub-target signal characteristic received by the first display driver chip 5, and the second display signal received by the second display driver chip 6 are the same, and are the refresh frequencies of the main screen and the sub-screen.
When the main screen 1 displays and the auxiliary screen 2 does not display, the display signal for transmitting and/or retaining the target signal characteristic comprises:
the main control chip 3 sends a first display signal to the first display driving chip 5 through a first signal line 8, wherein the first display signal comprises a display signal with a third sub-target signal characteristic and a display signal with a fourth sub-target signal characteristic to control the main screen to display and the auxiliary screen not to display, the display signal with the third sub-target signal characteristic is an invalid signal, and the display signal with the fourth sub-target signal characteristic is an valid signal. Here, the invalid signal may be, for example, a blank frame.
The first display driver chip 5 sends the display signal with the third sub-target signal characteristic to the sub-screen display driver chip 4, and the first display driver chip 5 retains the display signal with the fourth sub-target signal characteristic. Since the display signal having the characteristics of the third sub-target signal is an invalid signal, the sub-screen 2 is in a non-display state.
The main control chip 3 sends a second display signal to the second display driving chip 6 through a second signal line 9. The first display driving chip 5 receives a display signal with the fourth sub-target signal characteristic, and after the second display driving chip receives the second display signal, the first display driving chip 5 and the second display driving chip 6 drive the main screen 1 together to display.
When the main screen 1 is not displayed and the auxiliary screen 2 is displayed, the sending and/or reserving the display signal of the target signal characteristic comprises the following steps:
the main control chip 3 sends a first display signal to the first display driving chip 5 through the first signal line 8, the first display signal includes a display signal with the signal characteristic of the fifth sub-target and a display signal with the signal characteristic of the sixth sub-target, the display signal with the signal characteristic of the sixth sub-target is an invalid signal, and the invalid signal is, for example, a blank frame.
The first display driving chip 5 sends a display signal with the fifth sub-target signal characteristic to the sub-screen display driving chip 4, and the sub-screen display driving chip 4 controls the sub-screen 2 to display after receiving the display signal with the fifth sub-target signal characteristic.
The main control chip 3 stops sending the second display signal to the second display driving chip 6 through the second signal line 9.
Since the signal related to the main screen 1 received by the first display driver chip 5, i.e. the display signal having the characteristics of the sixth sub-target signal, is an invalid signal, the second display driver chip 6 does not receive the second display signal, and thus the main screen 1 does not display.
In one example, the display states of the main screen 1 and the sub screen 2 include: the main screen 1 and the auxiliary screen 2 are displayed simultaneously; the main screen 1 displays, and the auxiliary screen 2 does not display; the main screen 1 is not displayed and the sub-screen 2 is displayed. The signal characteristics include display frame characteristics, N being a positive integer greater than zero. The first frame rate is twice the second frame rate, specifically, the second frame rate is 60Hz, and the first frame rate is 120 Hz.
When the main screen 1 and the auxiliary screen 2 are required to be displayed simultaneously:
in the 2N +1 th frame, the main control chip 3 transmits a first display signal to the first display driving chip 5 at a first frame rate through the first signal line 8, and the first display driving chip 5 transmits the received first display signal with the first sub-target signal characteristic to the sub-screen display driving chip 4 through the first flexible circuit board 10, the third flexible circuit board 12 and the second flexible circuit board 11; the main control chip 3 transmits the second display signal to the second display driving chip 6 through the second signal line 9 at the second frame rate.
In the 2N frame, the main control chip 3 transmits the first display signal to the first display driving chip 5 through the first signal line 8 at the first frame rate, and the first display driving chip 5 reserves the received first display signal with the characteristics of the second sub-target signal; the main control chip 3 transmits the second display signal to the second display driving chip 6 through the second signal line 9 at the second frame rate.
By the mode, the main screen 1 and the auxiliary screen 2 can be better ensured to be displayed at the same frame rate, and the whole display effect is improved. In addition, the first display driving chip 5 and the second display driving chip 6 are commonly used for displaying the main screen 1, so that the resolution and the pixel density of the main screen 1 can be improved, and the display effect is improved.
When the main screen 1 is required to display and the auxiliary screen 2 is not required to display:
in the 2N +1 th frame, the main control chip 3 transmits an invalid display signal to the first display driving chip 5 at a first frame rate through the first signal line 8, and the first display driving chip 5 transmits the received first display signal with the characteristics of the third sub-target signal to the sub-screen display driving chip 4 through the first flexible circuit board 10, the third flexible circuit board 12 and the second flexible circuit board 11; the main control chip 3 transmits the second display signal to the second display driving chip 6 through the second signal line 9 at the second frame rate.
In the 2N frame, the main control chip 3 transmits the first display signal to the first display driving chip 5 through the first signal line 8 at the first frame rate, and the first display driving chip 5 reserves the received first display signal with the characteristics of the fourth sub-target signal; the main control chip 3 transmits the second display signal to the second display driving chip 6 through the second signal line 9 at the second frame rate.
Through the mode, the first display driving chip 5 and the second display driving chip 6 are jointly used for displaying the main screen 1, so that the resolution and the pixel density of the main screen 1 can be improved, and the display effect is improved; in addition, since the first frame rate is twice the second frame rate, it can be ensured that the frequencies of the display signals received by the first display driving chip 5 and the second display driving chip 6 for controlling the display of the main screen 1 are the same, and the display effect of the main screen 1 can be better ensured.
When the main screen 1 is required to be not displayed and the auxiliary screen 2 is required to be displayed:
in the 2N +1 th frame, the main control chip 3 transmits the first display signal to the first display driving chip 5 at the first frame rate through the first signal line 8, and the first display driving chip 5 transmits the received first display signal with the fifth sub-target signal characteristic to the sub-screen display driving chip 4 through the first flexible circuit board 10, the third flexible circuit board 12 and the second flexible circuit board 11; the second signal line 9 stops transmitting the second display signal.
In the 2N frame, the main control chip 3 transmits the invalid display signals to the first display driving chip 5 through the first signal line 8 at the first frame rate, and the first display driving chip 5 reserves the received first display signals with the characteristics of the sixth sub-target signals; the second signal line 9 stops transmitting the second display signal.
By the above manner, the effect of only the sub-screen 2 display can be realized.
It should be noted that, in this example, the "signal features" in the "target signal features are both display frame features, and are divided into two signal features, i.e., the 2N frame and the 2N +1 frame, and the" target "in the" target signal features refers to a corresponding target of a corresponding display signal having the corresponding display frame features.
For example, a display signal with a first sub-target signal characteristic refers to: when the main screen and the auxiliary screen are displayed simultaneously, the effective signal transmitted by the 2N +1 th frame and used for displaying the auxiliary screen is recorded as a display signal with the characteristics of the first sub-target signal.
For another example, the display signal having the third sub-target signal characteristic refers to: and when the main screen displays and the auxiliary screen does not display, recording an invalid signal which is transmitted by the 2N +1 th frame and is used for displaying the auxiliary screen as a display signal with the characteristics of a third sub-target signal.
In this example, the display of the main screen 1 is controlled by the first display driver chip 5 and the second display driver chip 6, and the display of the sub-screen 2 is controlled by the display chip of the sub-screen 2, so that the independent display of the main screen 1 and the sub-screen 2 is realized. In addition, the display of the main screen 1 is controlled by the two main screen display driving chips, so that the resolution and the pixel density of the main screen 1 with a large display area can be improved, and the display effect of the main screen 1 is improved. According to the system, the independent display of the main screen 1 and the auxiliary screen 2 can be realized without setting a switch IC, the display effect of the main screen 1 can be improved, and the cost is low.
In one example, referring to fig. 3, the example is different from the above embodiment in that a third display driving chip for driving the display of the main screen 1 is further included in the example, which is denoted as a third display driving chip 7, and the third display driving chip 7 and the second display driving chip 6 are communicatively connected through a flexible circuit board.
When the main screen 1 and the auxiliary screen 2 are required to be displayed simultaneously:
in the 2N +1 th frame, the main control chip 3 transmits the first display signal to the first display driving chip 5 through the first signal line 8 at the frame rate of 120Hz, and the first display driving chip 5 transmits the received first display signal to the auxiliary screen display driving chip 4; the main control chip 3 transmits the second display signal to the second display driving chip 6 at a frame rate of 120Hz through the second signal line 9, and the second display driving chip 6 transmits the received second display signal to the third display driving chip.
In the 2N frame, the main control chip 3 transmits the first display signal to the first display driving chip 5 through the first signal line 8 at the frame rate of 120Hz, and the first display driving chip 5 retains the received first display signal; the main control chip 3 transmits the second display signal to the second display driving chip 6 through the second signal line 9 at a frame rate of 120Hz, and the second display driving chip 6 retains the received second display signal.
Through the mode, the main screen 1 and the auxiliary screen 2 can be better ensured to be displayed at the same frame rate (60 Hz), and the whole display effect is improved. In addition, the first display driving chip 5, the second display driving chip 6 and the third display driving chip 7 are commonly used for displaying the main screen 1, so that the resolution and the pixel density of the main screen 1 can be improved, and the display effect is improved.
When the main screen 1 is required to display and the auxiliary screen 2 is not required to display:
in the 2N +1 th frame, the main control chip 3 transmits invalid display signals to the first display driving chip 5 through the first signal line 8 at the frame rate of 120Hz, and the first display driving chip 5 transmits the received invalid display signals to the auxiliary screen display driving chip 4; the main control chip 3 transmits the second display signal to the second display driving chip 6 at a frame rate of 120Hz through the second signal line 9, and the second display driving chip 6 transmits the received second display signal to the third display driving chip.
In the 2N frame, the main control chip 3 transmits the first display signal to the first display driving chip 5 through the first signal line 8 at the frame rate of 120Hz, and the first display driving chip 5 retains the received first display signal; the main control chip 3 transmits the second display signal to the second display driving chip 6 through the second signal line 9 at a frame rate of 120Hz, and the second display driving chip 6 retains the received second display signal.
Through the mode, the first display driving chip 5, the second display driving chip 6 and the third display driving chip 7 are commonly used for displaying the main screen 1, so that the resolution and the pixel density of the main screen 1 can be improved, and the display effect is improved.
When the main screen 1 is required to be not displayed and the auxiliary screen 2 is required to be displayed:
in the 2N +1 th frame, the main control chip 3 transmits the first display signal to the first display driving chip 5 through the first signal line 8 at the frame rate of 120Hz, and the first display driving chip 5 transmits the received first display signal to the auxiliary screen display driving chip 4; the second signal line 9 stops transmitting the second display signal.
In the 2N frame, the main control chip 3 transmits the invalid display signals to the first display driving chip 5 through the first signal line 8 at the frame rate of 120Hz, and the first display driving chip 5 retains the received invalid display signals; the second signal line 9 stops transmitting the second display signal.
By the above manner, the effect of only the sub-screen 2 display can be realized.
It should be noted that, in this example, the main control chip 3 transmits the invalid display signal to the second display driving chip 6 through the second signal line 9 at a frame rate of 120Hz, and the main screen 1 may also be implemented not to display.
In this example, the display of the main screen 1 is controlled by the first display driver chip 5, the second display driver chip 6 and the third display driver chip 7, and the display of the sub-screen 2 is controlled by the display chip of the sub-screen 2, so that the main screen 1 and the sub-screen 2 can be independently displayed. In addition, the display of the main screen 1 is controlled by the three main screen display driving chips, so that the resolution and the pixel density of the main screen 1 with a large display area can be improved, and the display effect of the main screen 1 is improved. According to the system, the independent display of the main screen 1 and the auxiliary screen 2 can be realized without setting a switch IC, the display effect of the main screen 1 can be improved, and the cost is low.
In one exemplary embodiment, an electronic device is provided, which includes a main screen and a sub-screen independent of each other, a display area of the main screen being larger than a display area of the sub-screen. The electronic device may be a mobile phone, a computer, a tablet device, a television, or other device with a display function.
Referring to fig. 4, electronic device 400 may include one or more of the following components: a processing component 402, a memory 404, a power component 406, a multimedia component 408, an audio component 410, an interface for input/output (I/O) 412, a sensor component 414, and a communication component 416.
The processing component 402 generally controls the overall operation of the device 400, such as operations associated with display, telephone calls, data communications, camera operations, and recording operations. The processing component 402 may include one or more processors 420 to execute instructions to perform all or a portion of the steps of the methods described above. Further, the processing component 402 can include one or more modules that facilitate interaction between the processing component 402 and other components. For example, the processing component 402 can include a multimedia module to facilitate interaction between the multimedia component 408 and the processing component 402.
The memory 404 is configured to store various types of data to support operations at the device 400. Examples of such data include instructions for any application or method operating on device 400, contact data, phonebook data, messages, pictures, videos, and so forth. The memory 404 may be implemented by any type or combination of volatile or non-volatile memory devices such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic or optical disks.
The multimedia component 408 includes a screen that provides an output interface between the device 400 and the user. In some embodiments, the screen may include a Liquid Crystal Display (LCD) and a Touch Panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive an input signal from a user. The touch panel includes one or more touch sensors to sense touch, slide, and gestures on the touch panel. The touch sensor may not only sense the boundary of a touch or slide action, but also detect the duration and pressure associated with the touch or slide operation. In some embodiments, the multimedia component 408 includes a front facing camera and/or a rear facing camera. The front camera and/or the rear camera may receive external multimedia data when the electronic device 400 is in an operating mode, such as a shooting mode or a video mode. Each front camera and rear camera may be a fixed optical lens system or have a focal length and optical zoom capability.
The audio component 410 is configured to output and/or input audio signals. For example, the audio component 410 includes a Microphone (MIC) configured to receive external audio signals when the device 400 is in an operational mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signals may further be stored in the memory 404 or transmitted via the communication component 416. In some embodiments, audio component 410 also includes a speaker for outputting audio signals.
The I/O interface 412 provides an interface between the processing component 402 and peripheral interface modules, which may be keyboards, click wheels, buttons, etc. These buttons may include, but are not limited to: a home button, a volume button, a start button, and a lock button.
The sensor component 414 includes one or more sensors for providing various aspects of status assessment for the electronic device 400. For example, the sensor component 414 can detect an open/closed state of the electronic device 400, the relative positioning of components, such as a display and keypad of the electronic device 400, the sensor component 414 can also detect a change in the position of the device 400 or a component of the electronic device 400, the presence or absence of user contact with the device 400, orientation or acceleration/deceleration of the device 400, and a change in the temperature of the device 400. The sensor assembly 414 may include a proximity sensor configured to detect the presence of a nearby object without any physical contact. The sensor assembly 414 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor assembly 414 may also include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.
The communication component 416 is configured to facilitate wired or wireless communication between the device 400 and other devices. The device 700 may access a wireless network based on a communication standard, such as WiFi, 2G or 3G, or a combination thereof. In an exemplary embodiment, the communication component 416 receives broadcast signals or broadcast related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 416 further includes a Near Field Communication (NFC) module to facilitate short-range communications. For example, the NFC module may be implemented based on Radio Frequency Identification (RFID) technology, infrared data association (IrDA) technology, Ultra Wideband (UWB) technology, Bluetooth (BT) technology, and other technologies.
In an exemplary embodiment, the electronic device 400 may be implemented by one or more Application Specific Integrated Circuits (ASICs), Digital Signal Processors (DSPs), Digital Signal Processing Devices (DSPDs), Programmable Logic Devices (PLDs), Field Programmable Gate Arrays (FPGAs), controllers, micro-controllers, microprocessors or other electronic components for performing the above-described methods.
In an exemplary embodiment, a non-transitory computer-readable storage medium comprising instructions, such as the memory 404 comprising instructions, executable by the processor 420 of the device 400 to perform the above-described method is also provided. For example, the non-transitory computer readable storage medium may be a ROM, a Random Access Memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, and the like. The instructions in the storage medium, when executed by a processor of the electronic device, enable the electronic device to perform the above-described method.
Other embodiments of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the invention and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the invention being indicated by the following claims.
It will be understood that the invention is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the invention is limited only by the appended claims.
Claims (13)
1. A display data transmission system is applied to electronic equipment comprising a main screen and an auxiliary screen, and is characterized by comprising at least two main screen display driving chips for driving the main screen to display and an auxiliary screen display driving chip for driving the auxiliary screen to display;
a first display driving chip of the at least two main screen display driving chips is in communication connection with a main control chip of the electronic equipment through a first signal line, and the first display driving chip is also in communication connection with the auxiliary screen display driving chip.
2. The system according to claim 1, wherein a second display driver chip of the at least two main screen display driver chips is communicatively connected to the main control chip of the electronic device via a second signal line.
3. The system according to claim 2, wherein the at least two main screen display driver chips further comprise a third display driver chip, and the third display driver chip is communicatively connected to the second display driver chip.
4. The display data transmission system according to claim 1, further comprising a first flexible circuit board connected to the first display driver chip, and a second flexible circuit board connected to the sub-screen display driver chip;
the system further comprises a third flexible circuit board, wherein the third flexible circuit board is electrically connected with the first flexible circuit board and the second flexible circuit board respectively, so that the first display driving chip is in communication connection with the auxiliary screen display driving chip.
5. A display data transmission method is applied to an electronic device comprising a main screen and an auxiliary screen, and is characterized by comprising the following steps:
the main control chip sends a first display signal to the first display driving chip through the first signal circuit according to the display states of the main screen and the auxiliary screen of the electronic equipment;
the first display driving chip identifies signal characteristics contained in the received first display signal and sends and/or retains a display signal with target signal characteristics.
6. The method of claim 5, further comprising:
the main control chip sends a second display signal to the second display driving chip through a second signal line according to the display state of the main screen of the electronic equipment;
and the second display driving chip controls the main screen to display according to the received second display signal.
7. The method according to claim 5 or 6, wherein the sending and/or retaining the display signal of the target signal characteristic comprises:
the first display driving chip sends a display signal with a first sub-target signal characteristic to the sub-screen display driving chip, and keeps a display signal with a second sub-target signal characteristic to control the main screen and the sub-screen to display simultaneously, wherein the display signal with the first sub-target signal characteristic and the display signal with the second sub-target signal characteristic are both effective signals.
8. The method according to claim 5 or 6, wherein the sending and/or retaining the display signal of the target signal characteristic comprises:
and the first display driving chip sends a display signal with the third sub-target signal characteristic to the sub-screen display driving chip, and reserves a display signal with the fourth sub-target signal characteristic to control the main screen to display and the sub-screen not to display, wherein the display signal with the third sub-target signal characteristic is an invalid signal, and the display signal with the fourth sub-target signal characteristic is a valid signal.
9. The method according to claim 5, wherein the sending and/or retaining the display signal of the target signal characteristic comprises:
and the first display driving chip sends a display signal with a fifth sub-target signal characteristic to the sub-screen display driving chip, and reserves the display signal with a sixth sub-target signal characteristic to control the main screen not to display and the sub-screen to display, wherein the display signal with the sixth sub-target signal characteristic is an invalid signal, and the display signal with the fifth sub-target signal characteristic is a valid signal.
10. The method according to any one of claims 7 to 9, wherein the signal features are display frame features.
11. The method according to claim 6, wherein the frequency of the first display signal is twice the frequency of the second display signal.
12. An electronic device comprising a primary screen and a secondary screen, wherein the electronic device comprises the display data transmission system of any one of claims 1-4, the electronic device further comprising:
a processor;
a memory for storing processor-executable instructions;
wherein the processor is configured to perform the display data transmission method of any one of claims 5 to 11.
13. A non-transitory computer readable storage medium, wherein instructions in the storage medium, when executed by a processor of an electronic device, enable the electronic device to perform the display data transmission method of any one of claims 5 to 11.
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