Driving method of display device and display device
By acquiring the unlock signal through the timing control module and controlling the power management module to increase the driving voltage, the problem of reduced anti-interference capability of the display device after energy saving is solved, thereby improving anti-interference capability under low power consumption and avoiding screen abnormalities.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- GUANGZHOU CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD
- Filing Date
- 2024-11-12
- Publication Date
- 2026-07-24
AI Technical Summary
Under the trend of energy saving, the driving voltage of the timing control chip of the display device is reduced, which leads to a decrease in the anti-interference ability of the communication signal and causes abnormal screen problems such as black screen and screen flickering.
The timing control module acquires the signal representation of the unlock signal generated by the drive module. When the preset conditions are met, the control power management module increases the drive voltage output to the timing control module, and the voltage adjustment is achieved through IIC protocol communication.
While reducing power consumption under normal display conditions, it improves the anti-interference capability of the display device and avoids abnormal screen conditions such as black screen and screen flickering.
Smart Images
Figure CN119446024B_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of display technology, and in particular to a driving method for a display device and a display device. Background Technology
[0002] Mobile phone radio frequency interference testing is an important test for evaluating the anti-interference capability of display panels. Currently, the radio frequency interference bands tested for mobile phones include 2G (M850, GSM900), 3G (DSC1800, PCS1900), 4G (LTE), and 5G. The display devices integrated into mobile phones need to ensure that abnormal display phenomena such as black screen, screen flickering, and abnormal image display do not occur when the mobile phone emits such frequency bands.
[0003] In line with the trend of energy conservation, the driving voltage of the timing control chip in the display device has been reduced from 1.15V to 0.9V, resulting in a 37% reduction in power consumption. As the driving voltage decreases, the level of the communication signal also decreases, which reduces the anti-interference capability of the timing control chip's communication signal, leading to problems such as black screen and screen flickering on the display panel.
[0004] Therefore, it is necessary to provide a driving method for a display device and a display device to improve this deficiency. Summary of the Invention
[0005] The embodiments of this application provide a driving method for a display device and a display device that can improve the anti-interference capability of the display device.
[0006] Embodiments of this application provide a driving method for a display device, the driving method for the display device comprising the following steps: The timing control module acquires the unlock signal generated by the driver module: The timing control module captures the signal representation of the unlock signal; When the signal characterization meets the preset conditions, the timing control module controls the power management module to increase the driving voltage output to the timing control module.
[0007] Optionally, when the signal characterization meets preset conditions, the step of the timing control module controlling the power management module to increase the driving voltage output to the timing control module includes the following steps: When the signal indicates that the unlock signal changes from a first level to a second level, the timing control module controls the power management module to increase the driving voltage output to the timing control module.
[0008] Optionally, the timing control module controlling the power management module to increase the drive voltage output to the timing control module includes the following steps: The timing control module outputs control signals to the power management module via the IIC protocol; The power management module responds to the control signal by increasing the drive voltage.
[0009] Optionally, the driving method for the display device further includes the following steps: When the timing control module controls the power management module to increase the driving voltage output to the timing control module, the timing control module acquires the unlock signal generated by the driving module; The timing control module recaptures the signal representation of the unlock signal; When the signal characterization meets the preset conditions, the timing control module controls the power management module to increase the driving voltage output to the timing control module again, until the signal characterization does not meet the preset conditions.
[0010] Optionally, the driving method for the display device further includes the following steps: When the signal indicates that the unlock signal changes from the second level to the first level and remains at the first level for a preset duration, the driving voltage is reduced.
[0011] Optionally, the driving method for the display device further includes the following steps: When the signal indicates that the unlock signal changes from the second level to the first level and remains at the first level for a preset duration, the driving voltage is reduced to the initial voltage value.
[0012] Optionally, the first level is a high level and the second level is a low level.
[0013] Embodiments of this application also provide a display device, the display device comprising: Driver module; The timing control module is connected to the drive module; The power management module is connected to the timing control module; The timing control module is used to acquire the unlock signal generated by the drive module, and is also used to capture the signal characterization of the unlock signal. The timing control module is also used to control the power management module to increase the drive voltage output to the timing control module.
[0014] Optionally, the timing control module and the power management module are connected via an IIC bus, and the timing control module and the power management module communicate via the IIC protocol.
[0015] Optionally, when the signal indicates that the unlock signal changes from a first level to a second level, the timing control module controls the power management module to increase the driving voltage output to the timing control module.
[0016] The beneficial effects of the embodiments of this application are as follows: The embodiments of this application provide a driving method and a display device. The driving method of the display device includes: a timing control module acquiring an unlock signal generated by a driving module; the timing control module capturing the signal characterization of the unlock signal; when the signal characterization meets a preset condition, the timing control module controlling the power management module to increase the driving voltage output to the timing control module. By increasing the driving voltage output to the timing control module by the power management module when the signal characterization of the unlock signal generated by the driving module meets the preset condition, power consumption can be reduced under normal display conditions, while improving the anti-interference capability of the timing control module when the external signal interference intensity is large. This can improve the anti-interference capability of the display device and avoid screen abnormalities such as black screen and screen flickering. Attached Figure Description
[0017] Figure 1 A schematic flowchart illustrating a driving method for a display device provided in an embodiment of this application; Figure 2 A first timing diagram of a driving method for a display device provided in an embodiment of this application; Figure 3 A second timing diagram of a driving method for a display device provided in an embodiment of this application; Figure 4 This is a schematic diagram of the structure of a display device provided in an embodiment of this application. Detailed Implementation
[0018] The following descriptions of the embodiments are based on the accompanying illustrations and are used to illustrate specific embodiments in which this application can be implemented. Directional terms used in this application, such as [up], [down], [front], [back], [left], [right], [inner], [outer], [side], etc., are only for reference to the accompanying drawings. Therefore, the directional terms used are for illustrative and understanding purposes and not for limiting the application. In the figures, structurally similar units are represented by the same reference numerals.
[0019] The present application will be further described below with reference to the accompanying drawings and specific embodiments.
[0020] The embodiments of this application provide a driving method for a display device and a display device that can improve the anti-interference capability of the display device.
[0021] In this embodiment, the driving method of the display device includes the following steps: the timing control module acquires the unlock signal generated by the driving module; the timing control module captures the signal characterization of the unlock signal; when the signal characterization meets the preset conditions, the timing control module controls the power management module to increase the driving voltage output to the timing control module.
[0022] In this embodiment, when the signal characterization of the unlock signal generated by the driving module meets the preset conditions, the driving voltage output from the power management module to the timing control module is increased. This can reduce power consumption under normal display conditions while improving the anti-interference capability of the timing control module when the external signal interference intensity is high. This can improve the anti-interference capability of the display device and avoid screen abnormalities such as black screen and screen flickering.
[0023] like Figure 1 As shown, Figure 1 The flowchart illustrates a driving method for a display device provided in an embodiment of this application. The driving method includes: a timing control module acquiring a lock-out signal generated by a driving module; the timing control module capturing a signal representation of the lock-out signal; and when the signal representation meets a preset condition, the timing control module controlling a power management module to increase the driving voltage output to the timing control module.
[0024] In some embodiments, the display device includes a timing control module and a driving module. A P2P signal transmission channel exists between the timing control module and the driving module. The transmitted P2P signal is susceptible to external signal interference. When the P2P signal is interfered with and fails to meet the signal standard, the driving module can send a lost-lock signal back to the timing module through a feedback channel. The lost-lock signal characterizes the lost-lock state of the driving module. The timing control module determines the lost-lock state of the driving module by acquiring the lost-lock signal generated by the driving module.
[0025] In some embodiments, when the signal characterization meets preset conditions, the timing control module controls the power management module to increase the driving voltage output to the timing control module, which includes the following steps: when the signal characterization is an unlock signal that jumps from a first level to a second level, the timing control module controls the power management module to increase the driving voltage output to the timing control module.
[0026] In some embodiments, the signal characterization of the unlock signal includes the level of the unlock signal. When the drive module is in normal operating condition, the level of the unlock signal is a first level. When the drive module switches from normal operating condition to unlocked condition, the drive module adjusts the unlock signal from the first level to a second level and feeds the generated unlock signal back to the timing control module. After receiving the feedback, the timing control module sends a training signal to the drive module. The drive module responds to the training signal and releases the unlocked condition after training is completed, restoring the unlock signal from the second level to the first level. The timing control module then normally sends the display data signal to the drive module, and the drive module outputs normally to ensure that the display panel displays the image correctly.
[0027] In some embodiments, such as Figure 2 As shown, Figure 2 The timing diagram for the driving method of the first display device provided in the embodiments of this application shows that the first level is high and the second level is low. When the driving module is in normal operation, the unlock signal Lock is always high. When the driving module switches from normal operation to unlock, the driving module pulls the level of the unlock signal Lock low and feeds back the unlock signal Lock to the timing control module. After receiving the feedback, the timing control module sends a training signal to the driving module. The driving module responds to the training signal and releases the unlock state after training is completed, and restores the unlock signal Lock to high. The timing control module then sends the display data signal to the driving module normally, and the driving module outputs normally so that the display panel can display the image normally.
[0028] In some embodiments, the timing control module controls the power management module to increase the drive voltage output to the timing control module, which includes the following steps: the timing control module outputs a control signal to the power management module through the IIC protocol; the power management module responds to the control signal and increases the drive voltage.
[0029] In some embodiments, the timing control module is connected to the power management module via an integrated circuit bus. The timing control module and the power management module communicate via the IIC (Inter-Integrated Circuit) communication protocol. When the signal representing the unlock signal Lock changes from the first level to the second level, it indicates that external interference is increasing and the drive module is in an unlocked state. The timing control module outputs a control signal to the power management module. The power management module responds to the control signal CS input by the timing control module via the IIC protocol, increases the drive voltage according to a preset rule, and outputs the increased drive voltage to the timing control module, thereby enhancing the anti-interference capability of the timing control module.
[0030] In some embodiments, the timing control module and the power management module are connected via an integrated circuit bus. This ensures that the timing control module can modify the code of the power management module. When external interference increases, the timing control module can change the drive voltage output by the power management module via the integrated circuit bus to increase the drive voltage from the normal drive voltage to a higher voltage level, thereby improving the anti-interference capability of the timing control module.
[0031] In some embodiments, the drive voltage includes an initial voltage value corresponding to the normal operating state, that is, when the drive module is in the normal operating state, the unlock signal is high, and the drive voltage value is equal to the initial voltage value. Reducing the drive voltage includes the following steps: adding the initial voltage value to the voltage compensation value to obtain the adjusted drive voltage.
[0032] In some embodiments, the voltage compensation value is a preset constant value. The voltage compensation value can be obtained through testing and debugging. Only one compensation is needed on the initial voltage value of the drive power supply to ensure that the signal strength of the P2P signal output by the adjusted timing control module can resist external interference.
[0033] In some embodiments, the driving method for the display device further includes the following steps: when the timing control module controls the power management module to increase the driving voltage output to the timing control module, the timing control module acquires the unlock signal generated by the driving module; the timing control module again captures the signal characterization of the unlock signal; when the signal characterization meets the preset conditions, the timing control module again controls the power management module to increase the driving voltage output to the timing control module until the signal characterization does not meet the preset conditions.
[0034] like Figure 3 As shown, Figure 3 The timing diagram for the driving method of the second display device provided in the embodiments of this application shows that when external interference increases, the driving module feeds back the unlock signal to the timing control module to enhance the signal strength. If the signal strength is still insufficient to resist external interference, the driving module switches back from the normal operating state to the unlocked state and feeds back the unlock signal to the timing control module. The timing control module obtains the signal characterization corresponding to the unlock signal, that is, when the unlock signal jumps from the first level to the second level, the timing control module outputs a control signal to the power management module through the integrated circuit bus. The power management module responds to the control signal and compensates the driving voltage again based on the previous compensation. That is, based on the driving voltage obtained after the previous compensation, the voltage compensation value is accumulated until the signal standard corresponding to the unlocked state does not meet the preset conditions. That is, when the obtained signal characterization shows that the unlock signal is at the first level, the adjustment of the driving voltage can be stopped.
[0035] In some embodiments, the driving method of the display device further includes the following step: when the signal represents the unlock signal switching from the second level to the first level and maintaining the first level for a preset duration, the driving voltage is reduced.
[0036] When the signal representing the unlock signal (Lock) transitions from the second level to the first level and remains at the first level for a preset duration, the strength of the external interference signal decreases and returns to normal. At this time, the driving voltage is reduced according to a preset rule, thus reducing the power consumption of the timing control module and the display device. The preset duration can be set according to the duration of the external interference; for example, the preset duration can be a few seconds, tens of seconds, or several minutes.
[0037] In some embodiments, the driving voltage includes an initial voltage value corresponding to a normal operating state. When the signal characterizes an unlocked signal that transitions from a second level to a first level and remains at the first level for a preset duration, the driving voltage is reduced to the initial voltage value.
[0038] In one embodiment, the driving voltage includes an initial voltage value corresponding to the normal operating state. When the signal characterizes the unlock signal as jumping from the second level to the first level and maintaining the first level for a preset duration, it indicates that the external interference signal strength has returned to the normal level and the P2P signal has also returned to the normal level. At this time, the timing control module reduces the voltage value of the adjusted driving voltage output by the power management module to the initial voltage value through the integrated circuit bus. This can improve the anti-interference capability of the display device while avoiding increasing the power consumption of the display device during normal display.
[0039] Embodiments of this application also provide a display device, which can be driven using the driving method for the display device provided in any of the above embodiments. In conjunction with... Figure 4 As shown, Figure 4 The schematic diagram of the structure of the display device provided in the embodiment of this application shows that the display device 100 includes a display panel 11, a driving module 12, a timing control module 13, and a power management module 14.
[0040] In the embodiments of this application, such as Figure 4 As shown, the driving module 12 is a source drive circuit chip, and multiple driving modules 12 are connected to the display panel 11. The timing control module 13 is a timing controller, which is connected to the driving module 12, and the power management module 14 is connected to the timing control module 13. The timing control module 13 is used to acquire the unlock signal generated by the driving module 12, and it is also used to capture the signal characterization of the unlock signal. The timing control module 13 is also used to control the power management module to increase the driving voltage output to the timing control module.
[0041] In some embodiments, such as Figure 4 As shown, the timing control module 13 includes a lost-lock signal acquisition module 131, a characterization and capture module 132, and a control module 133. The lost-lock signal acquisition module 131 is used to acquire the lost-lock signal generated by the drive module 12. The characterization and capture module 132 is used to characterize the lost-lock signal. The control module 133 is used to control the power management module 14 to increase the drive voltage output to the timing control module 13 when the signal characterization meets the preset conditions.
[0042] In some embodiments, the timing control module 13 and the power management module 14 are connected via an IIC bus. For example, both the timing control module 13 and the power management module 14 have IIC interfaces. The IIC interface of the timing control module 13 is connected to the IIC interface of the power management module 14 via the IIC bus. The timing control module 13 and the power management module 14 communicate via the IIC protocol. This ensures that the timing control module can modify the code of the power management module. When external interference increases, the timing control module can change the drive voltage output by the power management module via the integrated circuit bus to increase the drive voltage from the normal drive voltage to a higher voltage level, thereby improving the anti-interference capability of the timing control module.
[0043] In some embodiments, such as Figure 4 As shown, the power management module 14 includes an adjustment module 141 and an output module 142. The adjustment module 141 is used to increase the driving voltage in response to the control signal output by the timing control module 13, and the output module 142 is used to output the increased driving voltage to the timing control module 13.
[0044] Embodiments of this application also provide a computer storage medium storing computer instructions that, when executed by a processor, implement the driving method of the applicable display device of any of the above embodiments.
[0045] Those skilled in the art will understand that all or part of the processes in the above embodiments can be implemented by a computer program instructing related hardware. The computer program can be stored in a non-volatile computer-readable storage medium. When executed, the computer program can include the processes of the embodiments of the above methods. Any references to memory, storage, databases, or other media used in the embodiments provided in this application can include non-volatile and / or volatile memory. Non-volatile memory can include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM), or flash memory. Volatile memory can include random access memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in various forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), dual data rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous link DRAM (SLDRAM), RAMbus direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and RAMbus dynamic RAM (RDRAM), etc.
[0046] Alternatively, if the integrated units of this invention are implemented as software functional modules and sold or used as independent products, they can also be stored in a computer-readable storage medium. Based on this understanding, the technical solutions of the embodiments of this invention, or the parts that contribute to related technologies, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, terminal, or network device, etc.) to execute all or part of the methods of the various embodiments of this invention. The aforementioned storage medium includes various media capable of storing program code, such as mobile storage devices, RAM, ROM, magnetic disks, or optical disks.
[0047] Corresponding to the computer storage medium described above, one embodiment also provides a computer device, which includes a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement any of the applicable display device driving methods described in the above embodiments.
[0048] The aforementioned computer device, by detecting the unlocked state fed back by the drive module, adjusts the drive voltage output from the power management module to the timing control module after obtaining the signal representation corresponding to the unlocked state, thereby enhancing the anti-interference capability of the timing control module. Based on this, the unlocked state is selected as a representation of P2P signal interference. By adjusting the unlocked state to increase the drive voltage output from the power management module to the timing control module, the anti-interference capability of the timing control module is enhanced. This allows for reduced power consumption under normal display conditions while improving the anti-interference capability of the timing control module when external signal interference is strong, thus improving the anti-interference capability of the display device and preventing screen abnormalities such as black screens and screen flickering.
[0049] The beneficial effects of the embodiments of this application are as follows: The embodiments of this application provide a driving method and a display device. The driving method of the display device includes: a timing control module acquiring an unlock signal generated by a driving module; the timing control module capturing the signal characterization of the unlock signal; when the signal characterization meets a preset condition, the timing control module controlling the power management module to increase the driving voltage output to the timing control module. By increasing the driving voltage output to the timing control module by the power management module when the signal characterization of the unlock signal generated by the driving module meets the preset condition, power consumption can be reduced under normal display conditions, while improving the anti-interference capability of the timing control module when the external signal interference intensity is large. This can improve the anti-interference capability of the display device and avoid screen abnormalities such as black screen and screen flickering.
[0050] In summary, although the present application discloses the preferred embodiments as described above, the above preferred embodiments are not intended to limit the present application. Those skilled in the art can make various modifications and refinements without departing from the spirit and scope of the present application. Therefore, the scope of protection of the present application is based on the scope defined by the claims.
Claims
1. A driving method for a display device, characterized in that, The driving method for the display device includes the following steps: The timing control module acquires the unlock signal generated by the driver module; The timing control module captures the signal representation of the unlock signal; When the signal characterization meets the preset conditions, the timing control module controls the power management module to increase the driving voltage output to the timing control module; The step of the timing control module controlling the power management module to increase the driving voltage output to the timing control module when the signal characterization meets the preset conditions includes the following steps: when the signal characterization is that the unlock signal jumps from the first level to the second level, the timing control module outputs a control signal to the power management module through the IIC protocol, and the power management module responds to the control signal by increasing the driving voltage.
2. The driving method for the display device as described in claim 1, characterized in that, The driving method for the display device further includes the following steps: When the timing control module controls the power management module to increase the driving voltage output to the timing control module, the timing control module acquires the unlock signal generated by the driving module; The timing control module recaptures the signal representation of the unlock signal; When the signal characterization meets the preset conditions, the timing control module controls the power management module to increase the driving voltage output to the timing control module again, until the signal characterization does not meet the preset conditions.
3. The driving method for the display device as described in any one of claims 1 to 2, characterized in that, The driving method for the display device further includes the following steps: When the signal indicates that the unlock signal changes from the second level to the first level and remains at the first level for a preset duration, the driving voltage is reduced.
4. The driving method for the display device as described in claim 3, characterized in that, The driving method for the display device further includes the following steps: When the signal indicates that the unlock signal changes from the second level to the first level and remains at the first level for a preset duration, the driving voltage is reduced to the initial voltage value.
5. The driving method for the display device as described in claim 3, characterized in that, The first level is a high level, and the second level is a low level.
6. A display device, characterized in that, The display device includes: Driver module; The timing control module is connected to the drive module; The power management module is connected to the timing control module; The timing control module is used to acquire the unlock signal generated by the driving module, and is also used to capture the signal characterization of the unlock signal. Furthermore, the timing control module controls the power management module to increase the driving voltage output to the timing control module. The timing control module and the power management module are connected via an IIC bus and communicate via the IIC protocol. When the signal characterization indicates that the unlock signal has changed from a first level to a second level, the timing control module outputs a control signal to the power management module via the IIC protocol. The power management module responds to the control signal by increasing the driving voltage.