A driving method of a novel display panel

Abstract

The application discloses a driving method of a novel display panel and relates to the technical field of gate stage driving circuits.The method is applied to a gate stage driving circuit of a display panel, the gate stage driving circuit comprises a voltage boosting circuit and a voltage stabilizing circuit, and the gate stage driving circuit further comprises a discharging circuit used for discharging the voltage boosting circuit and the voltage stabilizing circuit; the discharging circuit is enabled by a discharging signal, and the enabling frequency of the discharging signal is dynamically adjusted according to the refresh rate of the display panel; when the refresh rate of the display panel is high, the enabling frequency of the discharging signal is low; and when the refresh rate of the display panel is low, the enabling frequency of the discharging signal is high.The driving method of the novel display panel provided by the application releases the charge residue by adding the discharging circuit in the gate stage driving circuit, and dynamically adjusts the enabling frequency of the discharging signal according to the refresh rate, so that the power consumption of the discharging circuit is reduced under the premise of meeting the charge residue release requirement.

Description

Technical Field

[0001] This invention relates to the field of gate drive circuit technology, and in particular to a novel driving method for display panels. Background Technology

[0002] As times change, people have higher and higher requirements for the performance of display panels, especially for high refresh rate display panels, such as in e-sports games. However, in actual use, it is not necessary for the display panel to maintain a high refresh rate all the time. For example, when reading e-books, a lower refresh rate is sufficient for the user.

[0003] Therefore, to simultaneously meet the requirements of high and low refresh rate applications, display panels need to employ metal oxide (MO) processes. MO processes, due to their high electron mobility, can accommodate high refresh rates, while their low leakage current allows for low refresh rate applications. However, the characteristics of MO processes also make it difficult for the gate drive circuit of the display panel to release charge after charging, leading to residual charge. This residual charge may affect the lifespan of the display panel. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a novel driving method for a display panel. By adding a discharge circuit to the gate drive circuit to release residual charge and dynamically adjusting the discharge signal activation frequency according to the refresh rate, the power consumption of the discharge circuit is reduced while meeting the requirements for releasing residual charge.

[0005] This invention is implemented as follows:

[0006] A novel driving method for a display panel is applied to a gate-level driving circuit of the display panel. The gate-level driving circuit includes a boost circuit and a voltage regulator circuit, and further includes a discharge circuit for discharging the boost circuit and the voltage regulator circuit. The discharge circuit is enabled by a discharge signal, and the activation frequency of the discharge signal is dynamically adjusted according to the refresh rate of the display panel. When the refresh rate of the display panel is high, the activation frequency of the discharge signal is low, and when the refresh rate of the display panel is low, the activation frequency of the discharge signal is high.

[0007] Furthermore, the discharge signal activation determination process includes:

[0008] The motherboard sends the refresh rate parameters;

[0009] Adjust the refresh rate of the display module;

[0010] Select the activation frequency of the discharge signal based on the refresh rate.

[0011] Furthermore, the charging time of the gate drive circuit is 1 second per refresh rate.

[0012] Furthermore, the activation frequency of the discharge signal is less than or equal to once per frame.

[0013] Furthermore, when the refresh rate of the display panel is 30Hz, the activation frequency of the discharge signal is 30Hz; when the refresh rate of the display panel is 90Hz, the activation frequency of the discharge signal is 45Hz.

[0014] Furthermore, the display panel includes an OLED panel, an LCD panel, and a GOA panel.

[0015] The present invention has the following advantages:

[0016] By adding a discharge circuit to the gate drive circuit to release residual charge, and dynamically adjusting the discharge signal activation frequency according to the refresh rate, the discharge signal activation frequency is higher when the refresh rate is lower, with a maximum of once per frame; when the refresh rate is higher, the discharge signal activation frequency can be reduced accordingly, thereby reducing the power consumption of the discharge circuit while meeting the requirements for releasing residual charge. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0018] Figure 1 This is a schematic diagram of the existing gate drive circuit structure;

[0019] Figure 2 This is a schematic diagram of the gate drive circuit structure of the present invention;

[0020] Figure 3 This is a schematic diagram of the CLR signal frequency for low refresh rate in an embodiment of the present invention;

[0021] Figure 4 This is a schematic diagram illustrating the dynamic adjustment of the CLR signal frequency according to an embodiment of the present invention;

[0022] Figure 5 This is a schematic diagram of the discharge signal activation determination process in an embodiment of the present invention. Detailed Implementation

[0023] This invention provides a novel driving method for a display panel by adding a discharge circuit to the gate drive circuit to release residual charge, and dynamically adjusting the discharge signal activation frequency according to the refresh rate, thereby reducing the power consumption of the discharge circuit while meeting the requirements for releasing residual charge.

[0024] The overall concept of the technical solutions in the embodiments of the present invention is as follows:

[0025] Existing gate drive circuit structures such as Figure 1As shown, gate drive circuits typically consist of a boost circuit and a voltage regulator circuit. Because gate drive circuits used in metal oxide processes are prone to charge residue, which may affect the lifespan of the display panel, an additional discharge circuit is added to the gate drive circuit to clean up the charge. However, this additional circuit increases power consumption, affecting battery life or increasing device energy consumption. Therefore, this invention proposes a method for adjusting the activation frequency of the discharge signal (CLR) at different refresh rates to optimize power consumption. During actual display panel driving, at low refresh rates, the gate drive circuit charges for a longer time and stores more charge, while at high refresh rates, the charging time is shorter and stores less charge. Therefore, the frequency of the CLR signal can be adjusted accordingly at different refresh rates. By adjusting the refresh rate, the lower the refresh rate, the higher the CLR frequency 'a', activating a maximum of once per frame; at higher refresh rates, the CLR signal frequency 'a' can be lowered, thereby reducing the power consumption generated by the discharge circuit.

[0026] like Figure 2 As shown, this embodiment of the invention provides a novel driving method for a display panel, applied to a gate-level driving circuit of the display panel. The gate-level driving circuit includes a boost circuit and a voltage regulator circuit, and further includes a discharge circuit for discharging the boost circuit and the voltage regulator circuit. The discharge circuit is enabled by a discharge signal, and the activation frequency of the discharge signal is dynamically adjusted according to the refresh rate of the display panel. When the refresh rate of the display panel is high, the activation frequency of the discharge signal is low (e.g., when the refresh rate of the display panel is high, the activation frequency of the discharge signal is low). Figure 3 As shown), when the refresh rate of the display panel is low, the activation frequency of the discharge signal is high (e.g., Figure 4 As shown in the figure, this allows the enable frequency to be as small as possible while meeting the requirements for residual charge release, thus achieving optimal power consumption. It should be noted that the present invention does not limit the specific circuit structure of the discharge circuit. Any circuit structure that can discharge the boost circuit and voltage regulator circuit of the gate drive circuit and can be enabled by the discharge signal can be used as the discharge circuit. Existing discharge circuits can be used to implement this.

[0027] like Figure 5 As shown, in one possible implementation, the discharge signal activation determination process includes:

[0028] The motherboard sends the refresh rate parameters;

[0029] Adjust the refresh rate of the display module;

[0030] Select the activation frequency of the discharge signal based on the refresh rate.

[0031] In one specific embodiment, the charging time of the gate drive circuit is 1 second per refresh rate.

[0032] The activation frequency of the discharge signal is less than or equal to once per frame. When the refresh rate of the display panel is low, the activation frequency of the discharge signal is equal to once per frame.

[0033] When the refresh rate of the display panel is 30Hz, the activation frequency of the discharge signal can be dynamically adjusted to 30Hz; when the refresh rate of the display panel is 90Hz, the activation frequency of the discharge signal can be dynamically adjusted to 45Hz.

[0034] The display panels mentioned above can include OLED panels, LCD panels, and GOA panels.

[0035] This invention releases residual charge by adding a discharge circuit to the gate drive circuit and adjusts the activation frequency of the dynamic discharge signal according to the refresh rate. The lower the refresh rate, the higher the activation frequency of the discharge signal, with a maximum of once per frame. When the refresh rate is higher, the activation frequency of the discharge signal can be reduced accordingly, thereby reducing the power consumption of the discharge circuit while meeting the requirements for releasing residual charge.

[0036] While specific embodiments of the present invention have been described above, those skilled in the art should understand that the specific embodiments described are merely illustrative and not intended to limit the scope of the present invention. Equivalent modifications and variations made by those skilled in the art in accordance with the spirit of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. A novel driving method for a display panel, applied to a gate-level driving circuit of the display panel, the gate-level driving circuit comprising a boost circuit and a voltage regulator circuit, characterized in that: The gate drive circuit also includes a discharge circuit for discharging the boost circuit and the voltage regulator circuit. The discharge circuit is enabled by a discharge signal, and the activation frequency of the discharge signal is dynamically adjusted according to the refresh rate of the display panel. When the refresh rate of the display panel is high, the activation frequency of the discharge signal is low, and when the refresh rate of the display panel is low, the activation frequency of the discharge signal is high. The discharge signal activation determination process includes: The motherboard sends the refresh rate parameters; Adjust the refresh rate of the display module; Select the activation frequency of the discharge signal based on the refresh rate; The activation frequency of the discharge signal is less than or equal to once per frame.

2. The method according to claim 1, characterized in that: The charging time of the gate drive circuit is 1 second per refresh rate.

3. The method according to claim 1, characterized in that: When the refresh rate of the display panel is 30Hz, the activation frequency of the discharge signal is 30Hz; when the refresh rate of the display panel is 90Hz, the activation frequency of the discharge signal is 45Hz.

4. The method according to claim 1, characterized in that: The display panel includes an OLED panel, an LCD panel, and a GOA panel.

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