Display systems, methods and display devices

Abstract

This application discloses a display system, method, and display device, belonging to the field of liquid crystal display technology. The display system includes: a system motherboard and a display panel; the system motherboard is equipped with a timing control component, which sends control signals to the display panel to control the display panel to perform display; the display panel is equipped with a timing discrimination component, which determines the timing discrimination result of the control signals based on the control signals and signal specification standards, the signal specification standards specifying the signal timing that the control signals must meet; the timing discrimination component is further used to send a correction signal to the timing control component when the timing discrimination result indicates that the control signals do not conform to the signal specification standards; the timing control component is further used to correct the signal timing of the control signals based on the correction signal. Using this display system can improve the efficiency of correcting control signals in the display system.

Description

Technical Field

[0001] This application relates to the field of liquid crystal display technology, and in particular to a display system, method and display device. Background Technology

[0002] Display devices with LCM (Liquid Crystal Module) display panels must meet LCM specification standards before leaving the factory. These LCM specification standards comply with VESA (Video Electronics Standards Association) requirements for signal timing.

[0003] In related technologies, whether the timing control signal received by the LCM display panel meets the LCM specification standard is determined by manual measurement, and then the control signal is corrected based on the manual measurement results to make the control signal conform to the LCM specification standard. However, manual measurement is prone to measurement errors, and the processing efficiency of measurement and correction is low. Summary of the Invention

[0004] This application provides a display system, method, and display device, the technical solution of which includes the following contents.

[0005] On one hand, embodiments of this application provide a display system, the display system comprising:

[0006] System motherboard and display panel;

[0007] The system motherboard is equipped with a timing control component, which is used to send control signals to the display panel, and the control signals are used to control the display panel to display.

[0008] The display panel is provided with a timing discrimination component. The timing discrimination component is used to determine the timing discrimination result of the control signal based on the control signal and the signal specification standard. The signal specification standard is used to specify the signal timing that the control signal needs to meet.

[0009] The timing discrimination component is further configured to send a correction signal to the timing control component when the timing discrimination result indicates that the control signal does not conform to the signal specification standard;

[0010] The timing control component is further configured to correct the timing of the control signal based on the correction signal.

[0011] On the other hand, embodiments of this application provide a display method, the method being used on a system motherboard, the system motherboard being provided with a timing control component, the method comprising:

[0012] The timing control component sends a control signal to the display panel, and the control signal is used to control the display panel to display.

[0013] The system receives a correction signal sent by the timing discrimination component in the display panel. The correction signal is sent by the timing discrimination component when it determines that the control signal does not meet the signal specification standard.

[0014] Based on the correction signal, the signal timing of the control signal is corrected;

[0015] Optionally, the step of correcting the signal timing of the control signal based on the correction signal includes:

[0016] The timing control component corrects the timing of the control signal based on the timing adjustment method and timing adjustment step size indicated by the correction signal.

[0017] Optionally, the step of correcting the signal timing of the control signal based on the correction signal includes:

[0018] The timing control component corrects the timing of the control signal based on the timing adjustment method and the timing adjustment amount indicated by the correction signal.

[0019] On the other hand, embodiments of this application provide a display method for displaying a panel, the display panel being provided with a timing discrimination component, the method comprising:

[0020] The system receives control signals sent by the system motherboard through the timing control component, and the control signals are used to control the display panel to display.

[0021] Based on the control signal and the signal specification standard, the timing judgment result of the control signal is determined, and the signal specification standard is used to specify the signal timing of the control signal;

[0022] If the timing discrimination result indicates that the control signal does not conform to the signal specification standard, a correction signal is sent to the timing control component so that the timing control component can correct the signal timing of the control signal based on the correction signal.

[0023] Optionally, the timing discrimination component includes an analog-to-digital conversion circuit and a control unit. Determining the timing discrimination result of the control signal based on the control signal and signal specification standards includes:

[0024] The analog-to-digital converter circuit converts the received control signal from an analog signal to a digital signal and outputs the digital signal to the control unit.

[0025] The control unit determines the timing discrimination result of the control signal based on the signal timing of the digital signal and the signal specification standard.

[0026] Optionally, the method further includes:

[0027] When the timing discrimination result indicates that the control signal does not conform to the signal specification standard, the control unit sends the correction signal to the timing control component.

[0028] Optionally, the display panel includes a timing controller, a pulse control integrated circuit chip, and a backlight display integrated circuit chip; the analog-to-digital conversion circuit includes a first analog-to-digital conversion circuit integrated in the timing controller, a second analog-to-digital conversion circuit integrated in the pulse control integrated circuit chip, and a third analog-to-digital conversion circuit integrated in the backlight display integrated circuit chip;

[0029] The determination of the timing discrimination result of the control signal based on the control signal and the signal specification standard includes:

[0030] The first analog-to-digital converter circuit converts the image display control signal sent to the timing controller from an analog signal to a digital signal to obtain a first digital signal;

[0031] The second analog-to-digital converter circuit converts the voltage input signal sent to the pulse control integrated circuit chip from an analog signal to a digital signal to obtain a second digital signal;

[0032] The third analog-to-digital converter circuit converts the backlight display control signal sent to the backlight display integrated circuit chip from an analog signal to a digital signal to obtain a third digital signal;

[0033] Based on the signal specification standard, the control unit performs timing discrimination on the first digital signal, the second digital signal, and the third digital signal respectively to obtain the timing discrimination results of the image display control signal, the voltage input signal, and the backlight display control signal.

[0034] Optionally, the analog-to-digital conversion circuit is independent of the timing controller, pulse control integrated circuit chip, and backlight display integrated circuit chip of the display panel;

[0035] The determination of the timing discrimination result of the control signal based on the control signal and the signal specification standard includes:

[0036] The analog-to-digital conversion circuit acquires the image display control signal sent by the timing control component to the timing controller, the voltage input signal sent by the timing control component to the pulse control integrated circuit chip, and the backlight display control signal sent by the timing control component to the backlight display integrated circuit.

[0037] The analog-to-digital converter circuit converts the image display control signal from an analog signal to a digital signal to obtain a first digital signal; converts the voltage input signal from an analog signal to a digital signal to obtain a second digital signal; and converts the backlight display control signal from an analog signal to a digital signal to obtain a third digital signal.

[0038] Based on the signal specification standard, the control unit performs timing discrimination on the first digital signal, the second digital signal, and the third digital signal respectively to obtain the timing discrimination results of the image display control signal, the voltage input signal, and the backlight display control signal.

[0039] Optionally, the step of sending a correction signal to the timing control component when the timing discrimination result indicates that the control signal does not conform to the signal specification standard includes:

[0040] When the timing discrimination result indicates that the control signal does not conform to the signal specification standard, the timing discrimination component determines the timing adjustment method of the control signal, which includes extending the timing and shortening the timing; and sends the correction signal to the timing control component based on the timing adjustment method.

[0041] Optionally, the step of sending a correction signal to the timing control component when the timing discrimination result indicates that the control signal does not conform to the signal specification standard includes:

[0042] When the timing discrimination result indicates that the control signal does not conform to the signal specification standard, the timing discrimination component determines the timing adjustment method and timing adjustment amount of the control signal based on the current timing of the control signal and the target timing indicated by the signal specification standard. The timing adjustment method includes extending the timing and shortening the timing. Based on the timing adjustment method and the timing adjustment amount, the component sends the correction signal to the timing control component.

[0043] On the other hand, embodiments of this application provide a display device that is equipped with the display system described above.

[0044] In related technologies, the timing control component of the system motherboard sends control signals to the display panel. The timing of these control signals relies on manual measurement to determine whether they meet the signal specification standards. If they do not meet the signal specification standards, the control signals are corrected based on the results of manual measurement, resulting in low efficiency in the control signal correction.

[0045] In the display system provided in this application embodiment, a timing discrimination component is provided on the display panel. This timing discrimination component can discriminate the timing of control signals sent by the timing control component, determining whether the signal timing of the control signal conforms to the signal specification standard without manual measurement. Furthermore, if the control signal is determined to not conform to the signal specification standard, the display system has the ability to automatically correct the control signal, that is, the timing discrimination component sends a correction signal to the timing control component to guide the timing control component to correct the signal, thereby improving the efficiency of detecting and correcting the control signal. In addition, since manual measurement may have measurement errors, leading to correction errors, this application embodiment can also improve the accuracy of the detection results by having the display system self-test the control signal, thereby improving the accuracy of the corrected control signal. Attached Figure Description

[0046] Figure 1 This is a schematic diagram of a display system in related technologies;

[0047] Figure 2 This is a schematic diagram of a display system provided in an exemplary embodiment of this application;

[0048] Figure 3 This is a schematic diagram of a display system provided in another exemplary embodiment of this application;

[0049] Figure 4 This is a schematic diagram of the signal transmission in a display system in related technologies;

[0050] Figure 5 This is a schematic diagram of a signal specification standard provided in an exemplary embodiment of this application;

[0051] Figure 6 This is a schematic diagram of an integrated display system provided in an exemplary embodiment of this application;

[0052] Figure 7 This is a schematic diagram of an external display system provided in an exemplary embodiment of this application;

[0053] Figure 8 This is a flowchart of a system motherboard-side display method provided in an exemplary embodiment of this application;

[0054] Figure 9 This is a flowchart of a display panel-side display method provided in an exemplary embodiment of this application;

[0055] Figure 10 This is a schematic diagram of the structure of a display device provided in an exemplary embodiment of this application. Detailed Implementation

[0056] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0057] Display devices with LCM (Liquid Crystal Module) display panels must meet LCM specification standards before leaving the factory. These LCM specification standards comply with VESA (Video Electronics Standards Association) requirements for signal timing.

[0058] In related technologies, such as Figure 1 As shown, the display system 101 includes a system motherboard 102 and a display panel 103. The timing control component 104 of the system motherboard 102 sends control signals to the display panel 103.

[0059] Whether the control signal received by the LCM display panel meets the LCM specification standard is determined by manual measurement. That is, the tester tests the control signal sent by the timing control component 104 on the display panel 103, and then corrects the control signal according to the manual measurement results so that the control signal meets the LCM specification standard. However, manual measurement is prone to measurement errors, and the processing efficiency of measurement and correction is low.

[0060] This application provides a display system in which, upon receiving a control signal from the timing control component of the system motherboard, the display panel can automatically detect the control signal and determine whether it conforms to the signal specification standard. If the control signal does not conform to the signal specification standard, the display panel can also correct the control signal sent by the timing control component until it conforms to the signal specification standard, thus solving the inefficiency problem of manual measurement and improving signal correction efficiency.

[0061] See Figure 2 , Figure 2 This is a schematic diagram of a display system provided in an exemplary embodiment of this application. The display system 201 includes a system motherboard 202 and a display panel 203.

[0062] In this embodiment, the system motherboard 202 houses components such as the CPU (Central Processing Unit), memory, graphics card, and hard drive, enabling interconnection between these components. In this application embodiment, the system motherboard 202 also houses a timing control component 204 for controlling the display panel 203 to perform its display function. Optionally, the display device includes devices with display requirements such as televisions, laptops, desktop computers, workstations, tablets, smartphones, smartwatches, and in-vehicle infotainment systems.

[0063] The display panel 203 includes a display screen and other display components, and can display on the display screen according to the control signals sent by the system motherboard 202.

[0064] The system motherboard 202 is equipped with a timing control component 204, which is used to send control signals to the display panel 203, and the control signals are used to control the display panel 203 to display.

[0065] The display panel 203 is provided with a timing discrimination component 205, which is used to determine the timing discrimination result of the control signal based on the control signal and the signal specification standard. The signal specification standard is used to specify the signal timing that the control signal needs to meet.

[0066] The timing discrimination result is used to characterize whether the control signal conforms to the signal specification standard. Signal timing is used to characterize how the control signal changes over time, including the sequence of signal changes and the duration of those changes. For example, signal timing can be represented using timing curves.

[0067] Optionally, the signal specification standard of the display system 201 on different display devices can be the same or different. This signal specification standard can be specifically defined according to actual needs, and it must comply with VESA's requirements for signal timing. The signal specification standard can also be understood as one of the product specification standards that the display device must meet before leaving the factory, to ensure that the display function of the display device is normal after leaving the factory.

[0068] Optionally, the timing discrimination component 205 can be a newly added component to the display panel 203, or it can be a component obtained by improving an existing component on the display panel 203. This timing discrimination component can automatically detect whether the signal timing of the control signal conforms to the signal specification standard.

[0069] The timing discrimination component 205 is also used to send a correction signal to the timing control component 204 when the timing discrimination result indicates that the control signal does not meet the signal specification standard.

[0070] The timing control component 204 is also used to correct the timing of the control signal based on the correction signal.

[0071] The correction signal is used to instruct the timing control component to correct the control signal.

[0072] Optionally, a TX (Transport) circuit 206 is added to the timing discrimination component 205, and an RX (Receive) circuit 207 is added to the timing control component 204. The RX circuit can send information to the TX circuit through a communication protocol, including the timing discrimination component 205 sending a correction signal to the timing control component 204.

[0073] In the display system provided in this application embodiment, a timing discrimination component is provided on the display panel. This timing discrimination component can discriminate the timing of control signals sent by the timing control component, determining whether the signal timing of the control signal conforms to the signal specification standard without manual measurement. Furthermore, if the control signal is determined to not conform to the signal specification standard, the display system has the ability to automatically correct the control signal, that is, the timing discrimination component sends a correction signal to the timing control component to guide the timing control component to correct the signal, thereby improving the efficiency of detecting and correcting the control signal. In addition, since manual measurement may have measurement errors, leading to correction errors, this application embodiment can also improve the accuracy of the detection results by having the display system self-test the control signal, thereby improving the accuracy of the corrected control signal.

[0074] In some embodiments, since analog signals are difficult to use for discrimination calculations, the timing discrimination component first converts the control signal from an analog signal to a digital signal, and then calculates whether the signal timing of the control signal conforms to the signal specification standard based on the digital signal.

[0075] See Figure 3 , Figure 3 This is a schematic diagram of a display system provided in another exemplary embodiment of this application.

[0076] The display system 301 includes a system motherboard 302 and a display panel 303. The timing control component 304 of the system motherboard 302 sends control signals to the timing discrimination component 305 of the display panel.

[0077] The timing discrimination component 305 includes an analog-to-digital conversion circuit 306 and a control unit 307.

[0078] The input terminal of the analog-to-digital converter circuit 306 is connected to the output terminal of the timing control component 304, and the output terminal of the analog-to-digital converter circuit 306 is connected to the input terminal of the control unit 307.

[0079] The timing control component 304, in addition to sending control signals to the display panel 303 to control the display panel 303 to perform display, Figure 3(not shown), is also used to send a control signal to the analog-to-digital conversion circuit 306.

[0080] The analog-to-digital conversion circuit 306 is used to convert the received control signal from an analog signal to a digital signal and output the digital signal to the control unit 307.

[0081] The control unit 307 is used to determine the timing discrimination result of the control signal based on the signal timing and signal specification standard of the digital signal.

[0082] Exemplarily, the voltage input signal is an analog signal, and the analog-to-digital conversion circuit converts the voltage input signal and measures the voltage input signal as a percentage, so as to perform timing discrimination on the change process of the voltage input signal subsequently.

[0083] Exemplarily, the analog-to-digital conversion circuit 306 represents the control signal with high and low electrical level changes using digital 1 and 0, so that the control unit can perform timing discrimination through digital comparison.

[0084] Regarding timing discrimination, optionally, the control unit determines whether the signal standard specification is met according to the time accumulation of the control signal. For example, during the process of the voltage input signal rising from 10% to 90%, the time accumulation T1 is 2ms, and this time can be converted into the number 2, which is numerically compared with the time regulation 0.5 < T1 < 10 in the signal specification standard to determine compliance. Another example is that from when the voltage input signal reaches 90% to when the image display control signal is generated, the time accumulation T2 is 100ms, and this time can be converted into the number 100, which is numerically compared with the time regulation 0 < T2 < 200 in the signal specification standard to determine compliance.

[0085] The output end of the control unit 307 is connected to the input end of the timing control component 304.

[0086] The control unit 307 is also used to send a correction signal to the timing control component 304 when the timing discrimination result indicates that the control signal does not meet the signal specification standard.

[0087] Exemplarily, during the process of the voltage input signal rising from 10% to 90%, the time accumulation T1 is 12ms, and the time regulation in the signal specification standard is 0.5ms < T1 < 10ms, which exceeds the specified range. The control unit 307 sends a correction signal to instruct the timing control component 304 to adjust the voltage input signal to meet 0.5ms < T1 < 10ms.

[0088] In the embodiment of the present application, the control unit converts the control signal through the analog-to-digital conversion circuit, then performs timing discrimination in combination with the signal specification standard to determine the timing discrimination result, realizing automatic detection of the control signal timing, which is beneficial to improving the detection efficiency.

[0089] The following embodiments first describe the signal transmission and signal specification standards of the display system in the related art.

[0090] join Figure 4 , Figure 4 This is a schematic diagram of the signal transmission in a display system in related technologies. The system motherboard System401 of this display system is equipped with a timing controller 402. The display panel LCM403 is equipped with a pulse control integrated circuit chip PWM IC404, a timing controller Tcon (Timing controller) 405, and a backlight display integrated circuit chip LED IC406.

[0091] The control signals sent by Timing controller 402 to LCM 403 include the voltage input signal Vin (Voltage in) sent to PWM IC 404, the image display control signals (eDP, HPD, Aux, and Main-link) sent to Tcon 405, and the backlight display control signals (LED_EN, PWM, and VBL) sent to LED IC 406.

[0092] The eDP (Embedded Display Port) signal is used to detect the performance of the display panel or to assist in the initialization of the display panel for subsequent display. HPD (Hot Plug Detect) is used to detect device connection status; a high HPD signal indicates that the device has been inserted or is properly connected. After the HPD high-level signal is generated, the Timing controller 402 sends a parameter acquisition command to the Tcon 405 through the Aux (Auxiliary) channel to obtain display parameters such as resolution, refresh rate, and color space. Then, the System 401 configures the transmission parameters of the Main-link (which undertakes the main data transmission tasks), such as data rate and encoding method, to ensure that video image data can be transmitted normally to the LCM 403 and displayed correctly.

[0093] The LED_EN (Light Emitting Diode Enable) signal is used to turn the backlight on or off. The PWM (Pulse Width Modulation) signal is used to control the backlight color and brightness. VBL in the display system refers to Backlight Voltage Enable, which provides the operating voltage for the backlight.

[0094] The following example, using the power-on scenario of a display panel, illustrates the timing standards of the aforementioned control signals according to the signal specification standards. (See also...) Figure 5 , Figure 5 This is a schematic diagram of the signal specification standard provided in an exemplary embodiment of this application.

[0095] During the display panel power-on process, the Timing controller 402 sends Vin to establish voltage and prevent initial screen display failure. The eDP signal is Black Video, indicating a black screen for display panel initialization. After the HPD signal is set high, the system motherboard communicates with the display panel through the Aux channel to configure display parameters, and then performs link training via the Main-link signal. Upon successful training, it enters the power-on idle state. Then, the system motherboard transmits video data to the display panel via the Main-link, enabling the display panel to show the image. The eDP signal becomes Video form Source, indicating the video format source. Simultaneously, the LED_EN signal is set high to turn on the backlight. The PWM and VBL signals are set high before the backlight is turned on.

[0096] like Figure 5 As shown, the signal specification standard defines the range of time intervals between various time points during signal timing changes. The time intervals to be detected and their specifications are as follows:

[0097] T1: The time interval during which Vin increases from 10% to 90%; 0.5ms ≤ T1 ≤ 10ms;

[0098] T2: The time interval between the point when Vin reaches 90% and the point when the screen goes black;

[0099] 0ms≤T2≤200ms;

[0100] T3: The time interval between the point when Vin reaches 90% and the point when HPD goes high;

[0101] 0ms <T3≤200ms;

[0102] T4: The time interval from the start of Aux channel operation to the start of link training;

[0103] T5: Connection training duration; T6: Idle state duration;

[0104] T7: The time interval from power-on idle state to screen display; 50ms <T7;

[0105] T8: The time interval from the power-on idle state to the backlight turning on;

[0106] T4+T5+T6+T8>80ms;

[0107] T9: The time interval between when the backlight is turned off and the front-end display turns off and begins to enter the idle or off state;

[0108] T10: Displays the time interval from shutdown to Vin dropping to 90%;

[0109] 0ms <T9;0ms<T10<500ms;

[0110] T11: The time interval during which Vin decreases from 90% to 10%; 0.5ms ≤ T11 ≤ 10ms;

[0111] T12: The time interval during which Vin decreases from 10% and then rises back to 10%; 500ms ≤ T12;

[0112] T13: The time interval from VBL reaching 90% to PWM going high; 0ms <T13;

[0113] T14: The time interval from VBL reaching 90% to backlight activation; 0ms <T14;

[0114] T15: Time interval from backlight off to VBL dropping to 90%; 0ms <T15;

[0115] T16: The time interval from when the PWM goes low until VBL drops to 90%; 0ms <T16;

[0116] T17: The time interval during which VBL increases from 10% to 90%; 0.5ms ≤ T17;

[0117] T18: The time interval during which VBL decreases from 90% to 10%; 0.5ms ≤ T18.

[0118] It should be noted that, Figure 5 The signal specifications shown are for illustrative purposes only and are not intended to limit the specific content of the signal specifications.

[0119] Unlike related technologies, in this embodiment, the display panel can not only receive the control signals in the above embodiments to realize the display function, but also obtain the control signals described in the above embodiments through the timing discrimination component, and detect the control signals according to the signal specification standards described in the above embodiments.

[0120] When the analog-to-digital conversion circuit in the timing discrimination component is added to the display system in different assembly methods, the timing discrimination component detects the control signal in different ways.

[0121] Optionally, the analog-to-digital converter (ADC) circuit can be integrated into the display system in two ways: external and integrated. External ADC refers to an ADC circuit independent of other components in the display system, with the timing control components of the system motherboard sending control signals to the ADC circuit and other components in the display system. Integrated ADC refers to an ADC circuit integrated onto other components in the display system.

[0122] See Figure 6 , Figure 6 This is a schematic diagram of an integrated display system provided in an exemplary embodiment of this application. The display panel LCM601 includes a timing controller Tcon602, a pulse control integrated circuit chip PWM IC603, and a backlight display integrated circuit chip LED IC604.

[0123] The analog-to-digital conversion circuit includes a first analog-to-digital conversion circuit Analog to Digital 610 integrated in the timing controller Tcon 602, a second analog-to-digital conversion circuit Analog to Digital 620 integrated in the pulse control integrated circuit chip PWM IC 603, and a third analog-to-digital conversion circuit Analog to Digital 630 integrated in the backlight display integrated circuit chip LED IC 604.

[0124] Analog to Digital 610, Analog to Digital 620, and Analog to Digital 630 each have a TX circuit 611 to facilitate subsequent interaction with the timing control component 606 of the system motherboard System 605. The timing controller 606 receives the correction signal protocol sent by the MCU (Microcontroller Unit) 607 through the communication protocol via the RX circuit 612.

[0125] The input terminals of the first analog-to-digital converter (Analog to Digital 610), the second analog-to-digital converter (Analog to Digital 620), and the third analog-to-digital converter (Analog to Digital 630) are respectively connected to the output terminal of the timing controller 606.

[0126] The outputs of the first analog-to-digital converter (Analog to Digital 610), the second analog-to-digital converter (Analog to Digital 620), and the third analog-to-digital converter (Analog to Digital 630) are respectively connected to the inputs of the control unit MCU 607.

[0127] The first analog-to-digital converter circuit, Analog to Digital 610, is used to convert the image display control signal sent to the timing controller Tcon 602 from an analog signal to a digital signal to obtain the first digital signal.

[0128] Image display control signals are used to control the display panel to display information. Taking the display panel power-on as an example, the image display control signals include eDP, HPD, Aux, and Main-link, and... Figure 4 The control signals shown have the same function, so they will not be described again.

[0129] The second analog-to-digital converter circuit, Analog to Digital 620, is used to convert the voltage input signal Vin sent to the pulse control integrated circuit chip PWMIC603 from an analog signal to a digital signal, thus obtaining a second digital signal.

[0130] The third analog-to-digital converter circuit, Analog to Digital 630, is used to convert the backlight display control signal sent to the backlight display integrated circuit chip PWMIC 603 from an analog signal to a digital signal, thus obtaining a third digital signal.

[0131] Backlight display control signals are used to control the backlight. Taking the display panel power-on as an example, the backlight display control signals include LED_EN, PWM, and VBL, which are related to... Figure 4 The control signals shown have the same function, so they will not be described again.

[0132] The control unit MCU607 is used to perform timing discrimination on the first digital signal, the second digital signal, and the third digital signal based on the signal specification standard, and obtain the timing discrimination results of the image display control signal (eDP, HPD, Aux, and Main-link), the voltage input signal Vin, and the backlight display control signal (LED_EN, PWM, and VBL).

[0133] The timing discrimination result is used to characterize whether the timing associated with each control signal conforms to the signal specification standard.

[0134] In this embodiment, the analog-to-digital conversion circuit is integrated on each component within the display panel. It can acquire the control signals sent by the timing control component of the system motherboard to each component within the display panel, so that the analog-to-digital conversion circuit integrated on each component can convert the control signals and hand them over to the control unit for timing judgment. This eliminates the need to modify the transmission path of the control signals from the system motherboard side, simplifies the improvement to the system motherboard side, and avoids increasing the complexity of signal interaction on the system motherboard side.

[0135] See Figure 7 , Figure 7This is a schematic diagram of an external display system provided in an exemplary embodiment of this application. The analog-to-digital converter (Analog to Digital) 701 is independent of the timing controller Tcon 702, the pulse control integrated circuit chip PWM IC 703, and the backlight display integrated circuit chip LED IC 704 of the display panel.

[0136] The Analog to Digital (ADC) converter 701 is used to acquire the image display control signal sent by the timing controller 705 to the timing controller Tcon 702, the voltage input signal sent by the timing controller 705 to the pulse control integrated circuit chip PWM IC 703, and the backlight display control signal sent by the timing controller 705 to the backlight display integrated circuit LED IC 704.

[0137] The image display control signals are used to control the display panel to display information. Taking the display panel power-on as an example, the image display control signals include eDP, HPD, Aux, and Main-link, and... Figure 4 The control signals shown have the same function, so they will not be described again.

[0138] Backlight display control signals are used to control the backlight. Taking the display panel power-on as an example, the backlight display control signals include LED_EN, PWM, and VBL, which are related to... Figure 4 The control signals shown have the same function, so they will not be described again.

[0139] The Analog to Digital 701 converter is also used to convert image display control signals from analog signals to digital signals to obtain a first digital signal; to convert voltage input signals from analog signals to digital signals to obtain a second digital signal; and to convert backlight display control signals from analog signals to digital signals to obtain a third digital signal.

[0140] The control unit MCU706 is used to perform timing discrimination on the first digital signal, the second digital signal, and the third digital signal based on the signal specification standard, and obtain the timing discrimination results of the image display control signal, the voltage input signal, and the backlight display control signal respectively.

[0141] Among them, a new TX circuit 707 is added to the Analog to Digital (Analog to Digital) circuit 701 and the control unit MCU 706, which is used to send a correction signal protocol to the Timing controller 705 through a communication protocol. A new RX circuit 708 is added to the Timing controller 705, which is used to receive the correction signal protocol so that the Timing controller 705 can correct the control signal according to the correction signal protocol.

[0142] In this embodiment, the analog-to-digital conversion circuit is independent of the component that receives control signals within the display panel and is separately wired to the timing control component of the system motherboard. This allows for unified reception of control signals sent by the timing control component, which is then used by the control unit for timing determination. This approach helps reduce the number of additional components and lowers the hardware complexity on the display panel side.

[0143] The following embodiments illustrate the interaction between the timing discrimination component and the timing control component during execution signal correction. Optionally, both external display systems and integrated display systems can employ the interaction methods described in the following embodiments.

[0144] Optionally, the correction signal sent by the timing discrimination component to the timing control component may include a timing adjustment method.

[0145] The timing discrimination component is used to determine the timing adjustment method of the control signal when the timing discrimination result indicates that the control signal does not meet the signal specification standard. The timing adjustment method includes extending the timing and shortening the timing. Based on the timing adjustment method, a correction signal is sent to the timing control component.

[0146] In some embodiments, the signal specification standard defines a range for the time intervals between various time points during signal timing changes. When the time interval is greater than the upper limit of the range, the timing adjustment method is to shorten the timing; when the time interval is less than the lower limit of the range, the timing adjustment method is to extend the timing.

[0147] For example, as Figure 5 Taking the signal specification standard shown as an example, when T1 is greater than 10ms, the timing adjustment method is to shorten the timing. When T1 is less than 0.5ms, the timing adjustment method is to extend the timing.

[0148] The timing control component is used to correct the timing of the control signal based on the timing adjustment method and timing adjustment step size indicated by the correction signal.

[0149] The timing adjustment step size is the amount by which the timing control component adjusts the signal timing after each correction signal is sent. The timing adjustment step size is a fixed adjustment amount.

[0150] Optionally, if the timing discrimination component indicates that the control signal does not meet the signal specification standard, the timing discrimination component continues to send correction signals to the timing control component until the corrected control signal meets the signal specification standard.

[0151] For example, the timing adjustment step size is 1ms. Figure 5 Taking the signal specification standard shown as an example, when T1 is 12ms, the timing adjustment method indicated by the correction signal is to shorten the timing. After the timing adjustment, if T1 is still greater than 10ms, the timing discrimination component sends the correction signal again, indicating that the timing adjustment method is to shorten the timing, and T1 becomes 10ms, which meets the condition 0.5ms≤T1≤10ms.

[0152] For example, the timing adjustment step size is 0.1ms. Figure 5 Taking the signal specification standard shown as an example, when T1 is 0.3ms, the timing adjustment method indicated by the correction signal is extended timing. After the timing adjustment, T1 is 0.4ms, which is less than 0.5ms. The timing discrimination component sends the correction signal again, indicating that the timing adjustment method is extended timing, and T1 becomes 0.5ms, which meets the condition 0.5ms≤T1≤10ms.

[0153] Optionally, the correction signal may also include timing adjustment method and timing adjustment amount.

[0154] The timing discrimination component is used to determine the timing adjustment method and the timing adjustment amount of the control signal based on the current timing of the control signal and the target timing indicated by the signal specification standard when the timing discrimination result indicates that the control signal does not conform to the signal specification standard. The timing adjustment method includes extending the timing and shortening the timing. Based on the timing adjustment method and the timing adjustment amount, a correction signal is sent to the timing control component.

[0155] The timing control component is used to correct the timing of the control signal based on the timing adjustment method and the timing adjustment amount indicated by the correction signal.

[0156] In some embodiments, the timing adjustment amount refers to the amount of adjustment made by the timing control component to the signal timing, which is different from the timing adjustment step size. This timing adjustment amount is a variable that can be determined based on the difference between the signal timing and the signal specification standard.

[0157] For example, as Figure 5 Taking the signal specification standard shown as an example, when T1 is 12ms, the timing adjustment method indicated by the correction signal is to shorten the timing. The amount by which T1 exceeds 0.5ms≤T1≤10ms is 2ms. The timing discrimination component determines that the timing adjustment amount is 2ms, and T1 becomes 10ms.

[0158] For example, as Figure 5 Taking the signal specification standard shown as an example, when T1 is 0.3ms, the timing adjustment method indicated by the correction signal is to extend the timing. The amount by which T1 exceeds 0.5ms≤T1≤10ms is 0.2ms. The timing discrimination component determines the timing adjustment amount to be 0.2ms, and T1 becomes 0.5ms.

[0159] In this embodiment, the timing discrimination component can determine the timing adjustment method and send a correction signal to the timing control component, instructing the timing control component to adjust the signal timing according to the timing adjustment method. The timing control component can gradually correct the signal timing according to a fixed step size, simplifying the implementation logic and reducing the hardware implementation difficulty. Alternatively, the timing control component can adjust the signal timing according to the timing adjustment amount provided by the timing discrimination component, eliminating the need for a gradual adjustment process and improving the efficiency of signal timing correction.

[0160] See Figure 8 , Figure 8 This is a flowchart illustrating a system motherboard-side display method according to an exemplary embodiment of this application. The method is applied to a system motherboard, which is provided with a timing control component. The method includes the following steps.

[0161] Step 801: Send a control signal to the display panel through the timing control component. The control signal is used to control the display panel to display.

[0162] For example, such as Figure 4 As shown, during the power-on process of the display panel, the timing control component sends Vin, eDP, HPD, Aux, Main-link, LED_EN, PWM, and VBL to the display panel.

[0163] Step 802: Receive a correction signal sent by the timing discrimination component in the display panel. The correction signal is sent by the timing discrimination component when it determines that the control signal does not conform to the signal specification standard.

[0164] Optionally, the system motherboard can receive correction signals sent by the timing discrimination component through a communication protocol via an additional RX circuit on the timing control component.

[0165] Step 803: Based on the correction signal, correct the timing of the control signal.

[0166] Optionally, the timing control component corrects the timing of the control signal based on the timing adjustment method and timing adjustment step size indicated by the correction signal.

[0167] The timing adjustment methods include extending and shortening timing. In some embodiments, the signal specification standard defines a range for the time interval between various time nodes during signal timing changes. When the time interval is greater than the upper limit of the range, the timing adjustment method is to shorten the timing; when the time interval is less than the lower limit of the range, the timing adjustment method is to extend the timing.

[0168] The timing adjustment step size is the amount by which the timing control component adjusts the signal timing after each correction signal is sent. The timing adjustment step size is a fixed adjustment amount.

[0169] Optionally, if the timing determination result indicates that the control signal does not conform to the signal specification standard, the display panel continues to send correction signals to the timing control component until the corrected control signal conforms to the signal specification standard. Correspondingly, the system motherboard continues to receive correction signals, corrects the signal timing of the control signal, and then sends the corrected signal timing to the display panel so that the display panel can determine whether to continue sending correction signals.

[0170] For example, the timing adjustment step size is 1ms. Figure 5 Taking the signal specification standard shown as an example, when T1 is 12ms, the timing adjustment method indicated by the correction signal is to shorten the timing. After the timing adjustment, if T1 is still greater than 10ms, the timing control component receives the correction signal again, indicating that the timing adjustment method is to shorten the timing, and T1 becomes 10ms, which meets the condition 0.5ms≤T1≤10ms.

[0171] For example, the timing adjustment step size is 0.1ms. Figure 5 Taking the signal specification standard shown as an example, when T1 is 0.3ms, the timing adjustment method indicated by the correction signal is extended timing. After the timing adjustment, T1 is 0.4ms, which is less than 0.5ms. The timing control component receives the correction signal again, indicating that the timing adjustment method is extended timing, and T1 becomes 0.5ms, which meets the condition 0.5ms≤T1≤10ms.

[0172] Optionally, the timing control component corrects the timing of the control signal based on the timing adjustment method and timing adjustment amount indicated by the correction signal.

[0173] In some embodiments, the timing adjustment amount refers to the amount of adjustment made by the timing control component to the signal timing, which is different from the timing adjustment step size. This timing adjustment amount is a variable that can be determined based on the difference between the signal timing and the signal specification standard.

[0174] For example, as Figure 5Taking the signal specification standard shown as an example, when T1 is 12ms, the timing adjustment method indicated by the correction signal is to shorten the timing. The amount by which T1 exceeds 0.5ms≤T1≤10ms is 2ms. The timing control component modifies T1 to 10ms based on the timing adjustment amount of 2ms.

[0175] For example, as Figure 5 Taking the signal specification standard shown as an example, when T1 is 0.3ms, the timing adjustment method indicated by the correction signal is to extend the timing. The amount by which T1 exceeds 0.5ms≤T1≤10ms is 0.2ms. Based on the timing adjustment amount of 0.2ms, the timing control component modifies T1 to 0.5ms.

[0176] In this embodiment, the system motherboard can receive the correction signal sent by the display panel and correct the signal timing of the control signal, which solves the problem of reduced efficiency caused by manual measurement and correction, and helps to improve the correction efficiency.

[0177] See Figure 9 , Figure 9 This is a flowchart of a display panel-side display method provided in an exemplary embodiment of this application. The method is applied to a display panel, which is provided with a timing discrimination component. The method includes the following steps.

[0178] Step 901: Receive control signals sent by the system motherboard through the timing control component. The control signals are used to control the display panel to display.

[0179] For example, such as Figure 4 As shown, during the power-on process of the display panel, the timing control component sends Vin, eDP, HPD, Aux, Main-link, LED_EN, PWM, and VBL to the display panel.

[0180] Step 902: Based on the control signal and the signal specification standard, determine the timing judgment result of the control signal. The signal specification standard is used to specify the signal timing of the control signal.

[0181] Optionally, the timing discrimination component includes an analog-to-digital converter (ADC) circuit and a control unit. The ADC circuit converts the received control signal from an analog signal to a digital signal and outputs the digital signal to the control unit. Then, the control unit determines the timing discrimination result of the control signal based on the signal timing and signal specification standards of the digital signal.

[0182] Optionally, the analog-to-digital converter (ADC) circuit can be integrated into the display system in two ways: external and integrated. External ADC refers to an ADC circuit independent of other components in the display system, with the timing control components of the system motherboard sending control signals to the ADC circuit and other components in the display system. Integrated ADC refers to an ADC circuit integrated onto other components in the display system.

[0183] In the integrated display system, the display panel includes a timing controller, a pulse control integrated circuit chip, and a backlight display integrated circuit chip; the analog-to-digital conversion circuit includes a first analog-to-digital conversion circuit integrated into the timing controller, a second analog-to-digital conversion circuit integrated into the pulse control integrated circuit chip, and a third analog-to-digital conversion circuit integrated into the backlight display integrated circuit chip.

[0184] In some embodiments, a first analog-to-digital converter (ADC) converts the image display control signal sent to the timing controller from an analog signal to a digital signal to obtain a first digital signal; a second ADC converts the voltage input signal sent to the pulse control integrated circuit chip from an analog signal to a digital signal to obtain a second digital signal; a third ADC converts the backlight display control signal sent to the backlight display integrated circuit chip from an analog signal to a digital signal to obtain a third digital signal; then, the control unit performs timing discrimination on the first digital signal, the second digital signal, and the third digital signal based on signal specification standards to obtain the timing discrimination results for the image display control signal, the voltage input signal, and the backlight display control signal, respectively.

[0185] In an external display system, the analog-to-digital conversion circuit is independent of the timing controller, pulse control integrated circuit chip, and backlight display integrated circuit chip of the display panel.

[0186] In other embodiments, the analog-to-digital converter (ADC) acquires the image display control signal sent by the timing control component to the timing controller, the voltage input signal sent by the timing control component to the pulse control integrated circuit chip, and the backlight display control signal sent by the timing control component to the backlight display integrated circuit. Then, the ADC converts the image display control signal from an analog signal to a digital signal to obtain a first digital signal; converts the voltage input signal from an analog signal to a digital signal to obtain a second digital signal; and converts the backlight display control signal from an analog signal to a digital signal to obtain a third digital signal. Subsequently, the control unit performs timing discrimination on the first digital signal, the second digital signal, and the third digital signal based on signal specification standards to obtain the timing discrimination results for the image display control signal, the voltage input signal, and the backlight display control signal, respectively.

[0187] Step 903: If the timing discrimination result indicates that the control signal does not meet the signal specification standard, a correction signal is sent to the timing control component so that the timing control component can correct the signal timing of the control signal based on the correction signal.

[0188] Optionally, if the timing discrimination result indicates that the control signal does not meet the signal specification standard, the control unit of the timing discrimination component may send a correction signal to the timing control component of the system motherboard.

[0189] Optionally, if the timing discrimination result indicates that the control signal does not conform to the signal specification standard, the timing discrimination component determines the timing adjustment method of the control signal, which includes extending the timing and shortening the timing; then, based on the timing adjustment method, it sends a correction signal to the timing control component.

[0190] Optionally, if the timing discrimination result indicates that the control signal does not conform to the signal specification standard, the timing discrimination component determines the timing adjustment method and timing adjustment amount of the control signal based on the current timing of the control signal and the target timing indicated by the signal specification standard. The timing adjustment method includes extending the timing and shortening the timing. Then, a correction signal is sent to the timing control component based on the timing adjustment method and timing adjustment amount.

[0191] In this embodiment, the display panel automatically detects the control signals sent by the system motherboard according to the signal specifications, determines whether the timing of the control signals conforms to the signal specification standards, solves the problem of inefficiency in manually measuring control signals, and sends a correction signal to the timing control component of the system motherboard when the signal signals do not conform to the signal specification standards, instructing the timing control component to correct the signal timing, so as to make the control signals conform to the signal specification standards, which is beneficial to improving the correction efficiency and accuracy of the control signals.

[0192] join Figure 10 This application also provides a display device, which 1000 is equipped with a display system 1001 as described in the above embodiments.

[0193] Optionally, the display device 1000 includes devices with display requirements such as televisions, laptops, desktop computers, workstations, tablets, smartphones, smartwatches, and in-vehicle systems.

[0194] The display system 1001 includes a system motherboard 1002 and a display panel 1003. The system motherboard includes a timing control component 1004, and the display panel 1003 includes a timing discrimination component 1005. The timing control component 1004 sends control signals to the timing discrimination component 1005 for timing discrimination. The timing discrimination component 1005 can feed back correction signals to the RX circuit 1006 of the timing control component 1004 via the TX circuit 1007.

[0195] Those skilled in the art will understand that all or part of the steps of the above embodiments can be implemented by hardware, or by a program guiding the relevant hardware to be implemented. The program can be stored in a computer-readable storage medium, such as a read-only memory, a disk, or an optical disk.

[0196] The above description is merely an optional embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A display system, characterized in that, The display system includes: System motherboard and display panel; The system motherboard is equipped with a timing control component, which is used to send control signals to the display panel, and the control signals are used to control the display panel to display. The display panel is provided with a timing discrimination component, which includes an analog-to-digital conversion circuit and a control unit; the input terminal of the analog-to-digital conversion circuit is connected to the output terminal of the timing control component, the output terminal of the analog-to-digital conversion circuit is connected to the input terminal of the control unit, and the output terminal of the control unit is connected to the input terminal of the timing control component. The analog-to-digital converter circuit is used to convert the received control signal from an analog signal to a digital signal and output the digital signal to the control unit. The control unit is used to determine the timing discrimination result of the control signal based on the signal timing and signal specification standard of the digital signal; the signal specification standard is used to specify the signal timing that the control signal needs to meet. The control unit is further configured to send a correction signal to the timing control component when the timing discrimination result indicates that the control signal does not conform to the signal specification standard; The timing control component is further configured to correct the timing of the control signal based on the correction signal.

2. The display system according to claim 1, characterized in that, The display panel includes a timing controller, a pulse control integrated circuit chip, and a backlight display integrated circuit chip; The analog-to-digital conversion circuit includes a first analog-to-digital conversion circuit integrated into the timing controller, a second analog-to-digital conversion circuit integrated into the pulse control integrated circuit chip, and a third analog-to-digital conversion circuit integrated into the backlight display integrated circuit chip. The input terminals of the first analog-to-digital converter circuit, the second analog-to-digital converter circuit, and the third analog-to-digital converter circuit are respectively connected to the output terminal of the timing control component; The output terminals of the first analog-to-digital converter circuit, the second analog-to-digital converter circuit, and the third analog-to-digital converter circuit are respectively connected to the input terminal of the control unit.

3. The display system according to claim 2, characterized in that, The first analog-to-digital converter circuit is used to convert the image display control signal sent to the timing controller from an analog signal to a digital signal to obtain a first digital signal; The second analog-to-digital converter circuit is used to convert the voltage input signal sent to the pulse control integrated circuit chip from an analog signal to a digital signal to obtain a second digital signal; The third analog-to-digital converter circuit is used to convert the backlight display control signal sent to the backlight display integrated circuit chip from an analog signal to a digital signal to obtain a third digital signal; The control unit is configured to perform timing discrimination on the first digital signal, the second digital signal, and the third digital signal based on the signal specification standard, and obtain the timing discrimination results of the image display control signal, the voltage input signal, and the backlight display control signal, respectively.

4. The display system according to claim 1, characterized in that, The analog-to-digital conversion circuit is independent of the timing controller, pulse control integrated circuit chip, and backlight display integrated circuit chip of the display panel; The analog-to-digital conversion circuit is used to acquire the image display control signal sent by the timing control component to the timing controller, the voltage input signal sent by the timing control component to the pulse control integrated circuit chip, and the backlight display control signal sent by the timing control component to the backlight display integrated circuit. The analog-to-digital converter circuit is further configured to convert the image display control signal from an analog signal to a digital signal to obtain a first digital signal; convert the voltage input signal from an analog signal to a digital signal to obtain a second digital signal; and convert the backlight display control signal from an analog signal to a digital signal to obtain a third digital signal. The control unit is configured to perform timing discrimination on the first digital signal, the second digital signal, and the third digital signal based on the signal specification standard, and obtain the timing discrimination results of the image display control signal, the voltage input signal, and the backlight display control signal, respectively.

5. The display system according to any one of claims 1 to 4, characterized in that, The timing discrimination component is used to determine the timing adjustment method of the control signal when the timing discrimination result indicates that the control signal does not conform to the signal specification standard. The timing adjustment method includes extending the timing and shortening the timing. Based on the timing adjustment method, the component sends the correction signal to the timing control component. The timing control component is used to correct the signal timing of the control signal based on the timing adjustment method and timing adjustment step size indicated by the correction signal.

6. The display system according to any one of claims 1 to 4, characterized in that, The timing discrimination component is configured to, when the timing discrimination result indicates that the control signal does not conform to the signal specification standard, determine the timing adjustment method and timing adjustment amount of the control signal based on the current timing of the control signal and the target timing indicated by the signal specification standard, wherein the timing adjustment method includes extending the timing and shortening the timing; and send the correction signal to the timing control component based on the timing adjustment method and the timing adjustment amount. The timing control component is used to correct the signal timing of the control signal based on the timing adjustment method and the timing adjustment amount indicated by the correction signal.

7. A display method, characterized in that, The method is used on a system motherboard in a display system as described in any one of claims 1 to 6, wherein the system motherboard is provided with a timing control component, and the method includes: The timing control component sends a control signal to the display panel, and the control signal is used to control the display panel to display. The control unit in the timing discrimination component of the display panel receives a correction signal sent by the control unit when it determines that the control signal does not meet the signal specification standard. Based on the correction signal, the timing of the control signal is corrected.

8. A display method, characterized in that, The method is used in a display panel in a display system as described in any one of claims 1 to 6, wherein the display panel is provided with a timing discrimination component, and the timing discrimination component includes an analog-to-digital conversion circuit and a control unit; The input terminal of the analog-to-digital converter circuit is connected to the output terminal of the timing control component in the system motherboard; the output terminal of the analog-to-digital converter circuit is connected to the input terminal of the control unit; and the output terminal of the control unit is connected to the input terminal of the timing control component. The method includes: The system motherboard receives control signals sent through the timing control component, and the control signals are used to control the display panel to display. The analog-to-digital converter circuit converts the received control signal from an analog signal to a digital signal and outputs the digital signal to the control unit. The control unit determines the timing discrimination result of the control signal based on the signal timing and signal specification standard of the digital signal; the signal specification standard is used to define the signal timing of the control signal. When the timing discrimination result indicates that the control signal does not conform to the signal specification standard, the control unit sends a correction signal to the timing control component so that the timing control component can correct the signal timing of the control signal based on the correction signal.

9. A display device, characterized in that, The display device is provided with a display system as described in any one of claims 1 to 6.

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