Voltage regulation system, voltage regulation method, display device and control method thereof

Abstract

The application provides a voltage regulation system, a voltage regulation method, a display device and a control method thereof. The voltage regulation system comprises a temperature measurement unit configured to collect temperature information of a target device; a processing unit connected with the temperature measurement unit and configured to receive the temperature information and determine target regulation information corresponding to the temperature information; a timing controller connected with the processing unit and configured to receive the target regulation information and output target timing control information corresponding to the target regulation information; and a power management unit connected with the timing controller and configured to receive the target timing control information and output a target output voltage corresponding to the target timing control information to the target device. Different temperature information of the target device corresponds to different target output voltages, so that the power management unit can output different target output voltages to the target device at different temperatures to adapt to the actual working voltage required by the target device at different temperatures.

Description

Technical Field

[0001] This application relates to the field of display technology, and in particular to a voltage regulation system, voltage regulation method, display device and control method thereof. Background Technology

[0002] Display devices generally include a display substrate, a gate driver on array (GOA) circuit mounted on the display substrate, and external circuitry that provides drive signals to the gate driver circuit. Typically, the power management integrated circuit (PMIC) in the external circuitry supplies a fixed voltage to the gate driver circuit. Within a normal temperature range, this fixed voltage is well-suited to the GOA cells in the gate driver circuit. However, due to the inherent characteristics of the GOA cells, the voltage required to be applied to the GOA cells differs at high and low temperatures. Therefore, in extreme environments such as low or high temperatures, changes in the GOA cell characteristics can cause a voltage mismatch between the fixed voltage and the GOA cells, resulting in display defects on the display panel.

[0003] Therefore, it is very important to find a solution to the display panel's display failure problem in extreme environments such as high and low temperatures. Summary of the Invention

[0004] In view of this, the purpose of this application is to provide a voltage regulation system, a voltage regulation method, a display device, and a control method thereof.

[0005] To achieve the above objectives, the first aspect of this application provides a voltage regulation system, comprising:

[0006] The temperature measurement unit is configured to collect temperature information of the target device.

[0007] A processing unit, connected to the temperature measuring unit, is configured to receive the temperature information and determine target control information corresponding to the temperature information;

[0008] A timing controller, connected to the processing unit, is configured to receive the target control information and output target timing control information corresponding to the target control information.

[0009] A power management unit, connected to the timing controller, is configured to receive the target timing control information and output a target output voltage corresponding to the target timing control information to the target device.

[0010] Furthermore, the processing unit is also configured to:

[0011] Based on multiple preset temperature ranges, the target temperature range corresponding to the temperature information is determined;

[0012] Output the target control information corresponding to the target temperature range;

[0013] The plurality of preset temperature ranges include the target temperature range, and the plurality of preset temperature ranges correspond one-to-one with a plurality of control information, the plurality of control information including the target control information.

[0014] Furthermore, the power management unit includes multiple registers, each register corresponding to a multiple timing control information, and each register stores an output voltage;

[0015] The power management unit is also configured to:

[0016] The target register is determined based on the target timing control information;

[0017] Obtain the target output voltage from the target register and output it to the target device;

[0018] The plurality of registers include the target register, and the plurality of timing control information includes the target timing control information.

[0019] Furthermore, the power management unit includes a register, and the power management unit is also configured to: update the original output voltage of the register to a target output voltage corresponding to the target timing control information based on the target timing control information, and output the target output voltage.

[0020] Furthermore, the plurality of preset temperature ranges include a first temperature range, a second temperature range, and a third temperature range, wherein the temperature of the first temperature range is higher than the temperature of the second temperature range, and the temperature of the second temperature range is higher than the temperature of the third temperature range.

[0021] Furthermore, the target device is a transistor, and the target output voltage includes the turn-on voltage and / or turn-off voltage of the transistor, wherein the turn-off voltage corresponding to the first temperature range is lower than the turn-off voltage corresponding to the second temperature range.

[0022] Furthermore, the turn-on voltage corresponding to the third temperature range is higher than the turn-on voltage corresponding to the second temperature range, and / or the turn-off voltage corresponding to the third temperature range is higher than the turn-off voltage corresponding to the second temperature range.

[0023] The second aspect of this application provides a voltage regulation method, executed by a voltage regulation system, the voltage regulation system including a temperature measurement unit, a processing unit, a timing controller, and a power management unit;

[0024] The control method includes:

[0025] The temperature measurement unit collects temperature information of the target device;

[0026] The processing unit receives the temperature information and determines the target control information corresponding to the temperature information;

[0027] The timing controller receives the target control information and outputs target timing control information corresponding to the target control information;

[0028] The power management unit receives the target timing control information and outputs the target output voltage corresponding to the target timing control information to the target device.

[0029] Further, receiving the temperature information and determining the target control information corresponding to the temperature information includes:

[0030] Based on multiple preset temperature ranges, the target temperature range corresponding to the temperature information is determined;

[0031] Output the target control information corresponding to the target temperature range;

[0032] The plurality of preset temperature ranges include the target temperature range, and the plurality of preset temperature ranges correspond one-to-one with a plurality of control information, the plurality of control information including the target control information.

[0033] Furthermore, the power management unit includes a register, and the step of receiving the target timing control information and outputting a target output voltage corresponding to the target timing control information to the target device includes:

[0034] Based on the target timing control information, the original output voltage of the register is updated to the target output voltage corresponding to the target timing control information, and the target output voltage is output.

[0035] Furthermore, the power management integrated unit includes multiple registers, each register corresponding to a multiple timing control information, and each register stores an output voltage;

[0036] The step of receiving the target timing control information and outputting a target output voltage corresponding to the target timing control information to the target device includes:

[0037] The target register is determined based on the target timing control information;

[0038] The output voltage is obtained from the target register, and the output voltage is used as the target output voltage and output to the target device.

[0039] The plurality of registers include the target register, and the plurality of timing control information includes the target timing control information.

[0040] A third aspect of this application provides a display device, comprising:

[0041] Display substrate;

[0042] A gate driving circuit, disposed on the display substrate, includes a target device;

[0043] The voltage regulation system described in any of the first aspects above;

[0044] The temperature measurement unit of the voltage regulation system is disposed on the display substrate, the power management unit of the voltage regulation system is connected to the gate driving circuit, and the voltage regulation system is configured to output a target output voltage corresponding to the temperature information to the target device of the gate driving circuit according to the temperature information collected by the temperature measurement unit.

[0045] The fourth aspect of this application provides a control method for a display device, the display device including a display substrate, a gate driving circuit disposed on the display substrate, and a voltage regulation system as described in any of the first aspects above, wherein a temperature measuring unit of the voltage regulation system is disposed on the display substrate, and a power management unit of the voltage regulation system is connected to the gate driving circuit;

[0046] The control method includes:

[0047] The temperature measurement unit of the voltage regulation system collects the temperature information of the target device;

[0048] The processing unit of the voltage regulation system receives the temperature information and determines the target regulation information corresponding to the temperature information;

[0049] The timing controller of the voltage regulation system receives the target regulation information and outputs target timing control information corresponding to the target regulation information;

[0050] The power management unit of the voltage regulation system receives the target timing control information and outputs the target output voltage corresponding to the target timing control information to the target device.

[0051] As can be seen from the above, the voltage regulation system, voltage regulation method, display device, and control method provided in this application collect temperature information of the target device through a temperature measurement unit. The processing unit determines the target regulation information corresponding to different temperature information. Then, the timing controller outputs different target timing control information based on the received different target regulation information. Finally, the power management unit outputs different target output voltages to the target device based on the received different target timing control information. The target output voltage is related to the temperature information of the target device; different temperature information of the target device corresponds to different target output voltages. This allows the power management unit to output different target output voltages to the target device at different temperatures to adapt to the actual operating voltage required by the target device at different temperatures. When the voltage regulation system is placed inside the display device, the power management unit can output different target output voltages to the target device within the GOA unit based on different temperatures to adapt to the characteristics changes of the GOA unit itself, ensuring that the target output voltage and the GOA unit are always well-matched, avoiding display malfunctions of the display panel in extreme environments such as high and low temperatures. Attached Figure Description

[0052] To more clearly illustrate the technical solutions in this application or related technologies, the drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are only embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0053] Figure 1 This is a schematic diagram illustrating an exemplary GOA unit of a display panel;

[0054] Figure 2 This is a first schematic diagram of a voltage regulation system according to an embodiment of this application;

[0055] Figure 3 This is a second schematic diagram of the voltage regulation system according to an embodiment of this application;

[0056] Figure 4 This is a third schematic diagram of the voltage regulation system according to an embodiment of this application;

[0057] Figure 5 This is a fourth schematic diagram of the voltage regulation system according to an embodiment of this application;

[0058] Figure 6 This is a schematic flowchart of the voltage regulation method according to an embodiment of this application;

[0059] Figure 7 This is a flowchart illustrating the control method of the display device according to an embodiment of this application. Detailed Implementation

[0060] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with specific embodiments and the accompanying drawings.

[0061] It should be noted that, unless otherwise defined, the technical or scientific terms used in the embodiments of this application should have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. The terms "first," "second," and similar terms used in the embodiments of this application do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are only used to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0062] A first aspect of this application provides a display device. The display device may further include a display substrate. Depending on the display principle, the display substrate may be different. Optionally, the display device may be an organic light-emitting diode (OLED) display device, and the display substrate may be an OLED display substrate. The display device may also be a liquid crystal display device, and the display substrate may include a first substrate and a second substrate disposed opposite to each other, wherein, optionally, the first substrate may be an array substrate, and the second substrate may be a color filter substrate.

[0063] Liquid crystal displays (LCDs) are characterized by their small size, low power consumption, and lack of radiation, and currently dominate the display market. An LCD includes an array substrate, a color filter substrate, and liquid crystal material filling the space between them. The array substrate has multiple pixel structures arranged in an array, each pixel structure including a pixel circuit. This pixel circuit is connected to gate lines and data lines, and uses a gate drive signal from the gate lines and a data signal from the data lines to adjust the deflection angle of the liquid crystal molecules, thereby completing the display. Similarly, organic light-emitting diode (OLED) display substrates can also have multiple pixel structures arranged in an array. Each pixel structure includes a pixel circuit and a light-emitting element. The pixel circuit is connected to gate lines, data lines, and the light-emitting element, and uses a gate drive signal from the gate lines and a data signal from the data lines to drive the light-emitting element to emit light, thereby completing the display.

[0064] The gate drive signal for the gate lines is provided by the gate drive circuit, which is an essential circuit for driving the display panel to display normally. To achieve narrow bezels, taking liquid crystal displays as an example, array substrate row drive technology is generally used to integrate the gate drive circuit onto the array substrate; therefore, the gate drive circuit can also be called the GOA circuit. Current display panels include vertical and horizontal array pixel matrices. During display, the GOA circuit outputs gate scan signals to scan and access each pixel unit row by row (or column by column, or in other preset ways). The GOA circuit generates the gate scan signal for each pixel unit. Furthermore, the GOA circuit is a technology that integrates the gate drive circuit onto the array substrate. Each GOA unit acts as a shift register, sequentially passing the gate scan signal to the next GOA unit, activating the TFT switches row by row, and completing the data signal input for the pixel unit. Figure 1 An exemplary GOA unit 100 of a display panel is shown, which includes 12 transistors and a capacitor C1. These transistors can be, for example, thin-film transistors (TFTs). Figure 1 The diagram shows transistors M1 through M12, which are used to perform different functions.

[0065] In the gate drive circuit, the operating voltage of each transistor is provided by an external circuit. This external circuit typically includes at least a power management integrated circuit (PMIC). The PMIC outputs the operating voltage to each transistor in the gate drive circuit. In related technologies, the voltage supplied by the PMIC to each transistor in the GOA unit is fixed. Within the normal temperature range, the required operating voltage of the transistors is constant, thus this fixed voltage can drive the transistors to operate normally, resulting in good compatibility between the fixed voltage and the GOA unit. However, because transistors are very sensitive to temperature, the required turn-on and / or turn-off voltages of the transistors will change in extreme environments such as low or high temperatures. Therefore, in extreme high or low temperature environments, the fixed voltage provided by the PMIC may not match the required turn-on and / or turn-off voltages of the transistors, leading to voltage mismatch between the fixed voltage and the GOA unit, resulting in display defects on the display panel.

[0066] Based on the above problems, this application proposes a voltage regulation system, a voltage regulation method, a display device, and a control method thereof. The voltage regulation system described in this application is incorporated into the display device. The voltage regulation system outputs a target output voltage corresponding to the temperature information of the target device (such as a transistor) collected by the temperature measuring unit, according to the different temperature information of the target device. This ensures that the target output voltage can match the operating voltage of the target device at different temperatures, ensuring that the target output voltage and the GOA unit are always well adapted, and avoiding display problems of the display panel in extreme environments such as high and low temperatures.

[0067] The present application will be further described in detail below with reference to specific embodiments and the accompanying drawings.

[0068] refer to Figure 2 This application provides a voltage regulation system, comprising:

[0069] Temperature measurement unit 1 is configured to collect temperature information of the target device;

[0070] Processing unit 2, connected to the temperature measuring unit 1, is configured to receive the temperature information and determine the target control information corresponding to the temperature information;

[0071] The timing controller 3, connected to the processing unit 2, is configured to receive the target control information and output target timing control information corresponding to the target control information.

[0072] The power management unit 4 is connected to the timing controller 3 and is configured to receive the target timing control information and output the target output voltage corresponding to the target timing control information to the target device.

[0073] Specifically, the temperature measuring unit 1 is disposed on the display substrate of the display device. The temperature measuring unit 1 may include one or more temperature sensors, and the temperature measuring unit 1 is used to collect temperature information of the target device. In this embodiment, the target device is a transistor in a gate driving circuit, the gate driving circuit is integrated on the display substrate, and the gate driving circuit includes multiple transistors.

[0074] During the actual operation of the display device, there may be slight differences in the operating temperature of each transistor in the gate drive circuit. Therefore, when performing voltage regulation, it is necessary to take into account the operating temperature of all transistors to ensure that the target output voltage provided by the PMIC is compatible with the operating voltage of each transistor.

[0075] In specific implementation, the temperature measuring unit 1 may include the following three specific implementation methods:

[0076] Implementation method 1: The temperature measuring unit 1 includes multiple temperature sensors, each of which corresponds to a multiple transistor in the gate driving circuit. Each temperature sensor is used to collect the temperature information of the corresponding transistor.

[0077] Implementation Method 2: The temperature measuring unit 1 includes only one temperature sensor. This temperature sensor is used to measure the temperature information of a specific transistor. Then, based on a pre-drawn temperature curve, the temperature information of other transistors is calculated. The temperature curve is a relationship curve between the temperatures of each transistor, pre-simulated and drawn according to a model. Based on this temperature curve and the temperature of one transistor, the temperature information of the remaining transistors can be obtained.

[0078] Implementation Method 3: The temperature measuring unit 1 includes multiple temperature sensors, the number of which is less than the number of transistors in the gate drive circuit. Each temperature sensor is used to measure the temperature information of a specific transistor. Then, based on a pre-drawn temperature curve, the temperature information of the other transistors is calculated. The temperature curve is a pre-simulated and plotted graph showing the relationship between the temperatures of each transistor. Based on this temperature curve and the temperatures of several transistors, the temperature information of the remaining transistors can be obtained.

[0079] The processing unit 2 is connected to the temperature measuring unit 1. The processing unit 2 is used to receive the temperature information and determine the target control information corresponding to the temperature information. The processing unit 2 is used to receive the temperature information, judge and process the temperature information, and process the temperature information into target control information that the timing controller 3 can receive. The target control information corresponds to the temperature information.

[0080] Specifically, the processing unit 2 determines the target temperature range corresponding to the received temperature information based on multiple preset temperature ranges, and then outputs the target control information corresponding to the target temperature range. The processing unit 2 pre-sets multiple preset temperature ranges. After receiving the temperature information, the processing unit 2 judges the temperature information and determines the preset temperature range in which the temperature information is located, using this preset temperature range as the target temperature range. Based on the target temperature range, it outputs the target control information corresponding to the target temperature range. The processing unit 2 pre-sets multiple control information corresponding to the multiple preset temperature ranges, and the target control information is one of these multiple control information. In this embodiment, the processing unit 2 can be a temperature signal processor.

[0081] The preset temperature ranges are different temperature ranges set based on the operating temperature of the target device and practical experience. When the operating temperature of the target device is within different preset temperature ranges, the required operating voltage of the target device is different. In this embodiment, the multiple preset temperature ranges include a first temperature range, a second temperature range, and a third temperature range. The temperature of the first temperature range is higher than the temperature of the second temperature range, and the temperature of the second temperature range is higher than the temperature of the third temperature range. The temperature ranges of the first, second, and third temperature ranges are set based on the operating temperature of the target device and practical experience. For example, the temperature range of the first temperature range can be 40–70°C, the temperature range of the second temperature range can be 0–40°C, and the temperature range of the third temperature range can be -30–0°C.

[0082] For transistors, the second temperature range is within the normal operating temperature range, the first temperature range is within the high temperature range, and the third temperature range is within the low temperature range. When the operating temperature of a transistor is within different temperature ranges, the required operating voltage of the transistor is different.

[0083] The timing controller 3 is connected to the processing unit 2 and is used to receive the target regulation information and output target timing control information corresponding to the target regulation information. The target timing control information is information corresponding to the target regulation information and can be received by the power management unit 4. Based on the different target regulation information received, the timing controller 3 selects the target timing control information corresponding to the target regulation information and sends it to the power management unit 4. The target timing control information can be a digitally encoded square wave signal or a pulse wave signal, etc.

[0084] The timing controller 3 has multiple timing control information presets, each corresponding one-to-one with a plurality of control information. The target timing control information is one of the multiple timing control information. When the timing controller 3 receives different target control information, it determines the timing control information corresponding to the target control information from the multiple timing control information and outputs that timing control information as the target timing control information.

[0085] The power management unit 4 is connected to the timing controller 3 and is used to receive the target timing control information and output the target output voltage corresponding to the target timing control information to the target device.

[0086] Specifically, the power management unit 4 includes at least the following two specific implementation methods:

[0087] Implementation Method 1: The power management unit 4 has multiple output voltages pre-stored. When the power management unit 4 receives the target timing control information, it determines the output voltage corresponding to the target timing control information from the multiple output voltages and outputs the output voltage as the target output voltage to the target device.

[0088] Implementation Method 2: The power management unit 4 stores only one output voltage in advance. When the power management unit 4 receives the target timing control information, it modifies the pre-stored output voltage based on the target timing control information and outputs the modified output voltage as the target output voltage to the target device.

[0089] The target output voltage is related to the temperature information; different target output voltages correspond to different temperature ranges. For a transistor as the target device, the target output voltage includes the transistor's turn-on voltage and / or turn-off voltage.

[0090] The required turn-on voltage (VGL) and / or turn-off voltage (VGH) of a transistor differs at different temperatures. Using the turn-on and turn-off voltages at room temperature as a reference, at low temperatures, the turn-on and / or turn-off voltages supplied to the transistor need to be appropriately increased to ensure normal operation. At high temperatures, the turn-on and / or turn-off voltages supplied to the transistor need to be appropriately decreased to ensure normal operation and avoid display defects on the display panel. Therefore, the turn-off voltage corresponding to the first temperature range is lower than the turn-off voltage corresponding to the second temperature range, and the turn-on voltage corresponding to the third temperature range is higher than the turn-on voltage corresponding to the second temperature range, and / or the turn-off voltage corresponding to the third temperature range is higher than the turn-off voltage corresponding to the second temperature range, so that the turn-on and turn-off voltages of the transistor in each temperature range meet the actual requirements.

[0091] In this embodiment, the VGL corresponding to the first temperature range can be -7V and VGH can be 22V; the VGL corresponding to the second temperature range can be -8V and VGH can be 22V; and the VGL corresponding to the third temperature range can be -9V and VGH can be 23V. It is worth noting that the reason voltages can be positive or negative is because there is a reference voltage of 0V. Generally, ground is used as the reference voltage. That is, -9V is a voltage difference of 9V from ground, and -8V is a voltage difference of 8V from ground. Therefore, in terms of voltage, -9V > -8V. In other words, when comparing the magnitude of negative voltages, only the numerical value of the voltage is considered, not its sign.

[0092] In specific implementation, refer to Figure 3The temperature sensor, as the temperature measurement unit 1, collects the temperature information of the target device and outputs the temperature information to the temperature signal processor (i.e., the processing unit 2).

[0093] The temperature signal processor has three preset temperature ranges: a first temperature range (40–70°C), a second temperature range (0–40°C), and a third temperature range (-30–0°C). Upon receiving the temperature information, the temperature signal processor analyzes the information to determine the temperature range in which it falls; this determined temperature range is the target temperature range. Based on this target temperature range, it outputs target control information corresponding to that range. The temperature signal processor has three preset control information values ​​corresponding to the three preset temperature ranges, and the target control information is one of these three values. These three control information values ​​can be set to hexadecimal as 0x0A, 0x0B, and 0x0C. The target control information for the first temperature range is 0x0C, for the second temperature range it is 0x0A, and for the third temperature range it is 0x0B.

[0094] The timing controller 3 receives the target control information and outputs target timing control information corresponding to the target control information. The timing controller 3 has three preset timing control information codes A, B, and C (where A, B, and C represent square wave signals with different digital signal codes), and these three timing control information codes correspond one-to-one with the three control information codes. When the target control information received by the timing controller 3 is 0x0C, it outputs target timing control information A corresponding to that target control information; when the target control information received by the timing controller is 0x0A, it outputs target timing control information B corresponding to that target control information; and when the target control information received by the timing controller is 0x0B, it outputs target timing control information C corresponding to that target control information.

[0095] The power management unit 4 receives the target timing control information and outputs a target output voltage corresponding to the target timing control information to the target device. When the target timing control information is A, the VGL and VGH of the target output voltage are -7V and 22V, respectively; when the target timing control information is B, the VGL and VGH of the target output voltage are -8V and 22V, respectively; and when the target timing control information is C, the VGL and VGH of the target output voltage are -9V and 23V, respectively.

[0096] Specifically, when the temperature sensor collects a temperature of 30°C, the temperature signal processor determines that 30°C falls within the first temperature range and then outputs target control information 0x0C corresponding to the first temperature range. The timing controller 3 receives the target control information 0x0C and outputs target timing control information A corresponding to the target control information 0x0C. The power management unit 4 receives the target timing control information A and outputs a target output voltage corresponding to the target timing control information A, where VGL and VGH of the target output voltage are -7V and 22V, respectively.

[0097] When the temperature sensor collects a temperature of 20℃, the temperature signal processor determines that 20℃ falls within the second temperature range and then outputs target control information 0x0A corresponding to the second temperature range. The timing controller 3 receives the target control information 0x0A and outputs target timing control information B corresponding to it. The power management unit 4 receives the target timing control information B and outputs a target output voltage corresponding to it, where VGL and VGH are -8V and 22V, respectively.

[0098] When the temperature sensor collects a temperature of -20℃, the temperature signal processor determines that -20℃ falls within the third temperature range and then outputs target control information 0x0B corresponding to the third temperature range. The timing controller 3 receives the target control information 0x0B and outputs target timing control information C corresponding to it. The power management unit 4 receives the target timing control information C and outputs a target output voltage corresponding to it, where VGL and VGH are -9V and 23V, respectively.

[0099] The voltage regulation system provided in this application collects temperature information of the target device through a temperature measurement unit 1. A processing unit 2 determines the target regulation information corresponding to different temperature information. Then, a timing controller 3 outputs different target timing control information based on the received target regulation information. Finally, a power management unit 4 outputs different target output voltages to the target device based on the received target timing control information. The target output voltage is related to the temperature information of the target device; different temperature information of the target device corresponds to different target output voltages. This allows the power management unit 4 to output different target output voltages to the target device at different temperatures, ensuring that the target output voltage matches the operating voltage of the target device at all temperatures. When the voltage regulation system is placed inside a display device, the power management unit can output different target output voltages to the target device within the GOA unit based on different temperatures, ensuring that the target output voltage and the GOA unit are always well-matched, avoiding display malfunctions in extreme environments such as high and low temperatures.

[0100] It is worth noting that this embodiment is merely a specific example to describe the specific implementation process of placing the voltage regulation system in a display device to regulate the turn-on and turn-off voltages of the transistors in the GOA unit. This embodiment does not limit the specific application scenario of the voltage regulation system. Those skilled in the art should understand that the voltage regulation system described in this application can be applied to any temperature-sensitive electronic device. Using this voltage regulation system, the target output voltage to the electronic device is regulated based on the temperature of the electronic device under test.

[0101] In some embodiments, reference Figure 4 The power management unit 4 includes a register 41, and the power management unit 4 is further configured to: update the original output voltage of the register 41 to the target output voltage corresponding to the target timing control information based on the target timing control information, and output the target output voltage.

[0102] Specifically, the power management unit 4 includes a register 41, which stores the original output voltage. In the prior art, this original output voltage is fixed, so the output voltage to the target device is also fixed. As a result, in high or low temperature environments, the output voltage to the target device is not compatible with the actual operating voltage required by the target device.

[0103] In this application, based on the target timing control information, the original output voltage of register 41 is updated to the target output voltage corresponding to the target timing control information, and the target output voltage is output. The target timing control information can be a square wave encoded by a digital signal. After receiving the square wave encoded by the digital signal, the power management unit 4 uses a decoder to restore the square wave to the corresponding voltage value, stores the voltage value in register 41 and replaces the original output voltage already stored in register 41, and then outputs the voltage value as the target output voltage.

[0104] In this application, based on the target timing control information, the original output voltage of the register 41 is updated to the target output voltage corresponding to the target timing control information. Without changing the basic structure of the existing power management unit, the target output voltage can be changed simply by updating the voltage value, so that the target output voltage is always matched with the operating voltage required by the target device at the actual temperature, ensuring that the target device can work normally.

[0105] In some embodiments, reference Figure 5 The power management unit 4 includes multiple registers 41, each register 41 corresponding to a specific timing control information, and each register storing an output voltage. The power management unit 4 is further configured to: determine a target register based on the target timing control information; obtain the output voltage from the target register; and output the output voltage as the target output voltage to the target device.

[0106] Specifically, the power management unit 4 includes multiple registers 41, each of which corresponds to a multiple timing control information. Each timing control information corresponds to a register 41, and each register stores an output voltage.

[0107] Based on the different received target control information, the timing controller 3 selects the timing control information corresponding to the target control information from multiple timing control information as the target timing control information. Based on the different received target timing control information, the power management unit 4 selects the register 41 corresponding to the timing control information from multiple registers 41 as the target register, then obtains the output voltage corresponding to the target register from the target register, and outputs the output voltage as the target output voltage to the target device.

[0108] Each of the registers 41 stores an output voltage; that is, each of the multiple registers 41 stores a different output voltage. These different output voltages correspond to the output voltages of the target device within different temperature ranges, ensuring that the output voltage is adapted to the target device at different temperatures. For example, the power management unit 3 includes three registers 41, Q1, Q2, and Q3, where Q1 stores the output voltage of the target device at low temperature, Q2 stores the output voltage of the target device at room temperature, and Q3 stores the output voltage of the target device at high temperature.

[0109] In specific implementation, the timing control information preset by the timing controller 3 includes A, B, and C, and the power management unit 3 includes three registers 41Q1, Q2, and Q3, where Q1 corresponds to A, Q2 corresponds to B, and Q3 corresponds to C.

[0110] Based on the different received target control information, timing controller 3 selects timing control information A corresponding to the target control information from three timing control information A, B, and C as the target timing control information. Power management unit 4, based on the received target timing control information A, selects register Q1 corresponding to target timing control information A from multiple registers 41Q1, Q2, and Q3 as the target register, then obtains the output voltage corresponding to target register Q1 from target register Q1, and outputs the output voltage as the target output voltage to the target device.

[0111] In this application, multiple registers 41 are set in the power management unit 4. Each register 41 corresponds to a different timing control information. Each register 41 stores an output voltage. Without changing the value stored in the register 41, the corresponding register 41 can be selected based on the received target timing control information. Then, the output voltage stored in the selected register 41 can be used as the target output voltage. The register 41 can be flexibly selected based on different target timing control information to ensure that the target output voltage always matches the operating voltage required by the target device at the actual temperature.

[0112] Based on the same inventive concept, corresponding to any of the above embodiments, this application also provides a voltage regulation method, executed by a voltage regulation system, the voltage regulation system including a temperature measurement unit, a processing unit, a timing controller and a power management unit.

[0113] refer to Figure 6 The regulation method includes:

[0114] Step S101: The temperature measuring unit 1 collects the temperature information of the target device;

[0115] Step S102: The processing unit 2 receives the temperature information and determines the target control information corresponding to the temperature information;

[0116] Step S103: The timing controller 3 receives the target control information and outputs target timing control information corresponding to the target control information;

[0117] Step S104: The power management unit 4 receives the target timing control information and outputs the target output voltage corresponding to the target timing control information to the target device.

[0118] The methods described above are executed by the corresponding voltage regulation system in any of the foregoing embodiments and have the beneficial effects of the corresponding voltage regulation system embodiments, which will not be repeated here.

[0119] In some embodiments, receiving the temperature information and determining the target control information corresponding to the temperature information includes:

[0120] Based on multiple preset temperature ranges, the target temperature range corresponding to the temperature information is determined;

[0121] Output the target control information corresponding to the target temperature range;

[0122] The plurality of preset temperature ranges include the target temperature range, and the plurality of preset temperature ranges correspond one-to-one with a plurality of control information, the plurality of control information including the target control information.

[0123] In some embodiments, the power management unit 4 includes a register 41, and the step of receiving the target timing control information and outputting a target output voltage corresponding to the target timing control information to the target device includes:

[0124] Based on the target timing control information, the original output voltage of the register 41 is updated to the target output voltage corresponding to the target timing control information, and the target output voltage is output.

[0125] In some embodiments, the power management integrated unit 4 includes a plurality of registers 41, each of which corresponds to a plurality of timing control information, and each of the registers 41 stores an output voltage;

[0126] The step of receiving the target timing control information and outputting a target output voltage corresponding to the target timing control information to the target device includes:

[0127] The target register is determined based on the target timing control information;

[0128] The output voltage is obtained from the target register, and the output voltage is used as the target output voltage and output to the target device.

[0129] Among them, the plurality of registers 41 include the target register, and the plurality of timing control information includes the target timing control information.

[0130] Based on the same inventive concept, corresponding to any of the above embodiments, this application also provides a display device, including:

[0131] Display substrate;

[0132] A gate driving circuit, disposed on the display substrate, includes a target device;

[0133] The voltage regulation system described in any of the above items;

[0134] The temperature measuring unit 1 of the voltage regulation system is disposed on the display substrate, the power management unit 4 of the voltage regulation system is connected to the gate driving circuit, and the voltage regulation system is configured to output a target output voltage corresponding to the temperature information to the target device of the gate driving circuit according to the temperature information collected by the temperature measuring unit 1.

[0135] The display device has the beneficial effects of the corresponding voltage regulation system embodiment, which will not be elaborated here.

[0136] The display device can be a product with image display function, such as: monitor, television, billboard, digital photo frame, laser printer with display function, telephone, mobile phone, personal digital assistant (PDA), digital camera, portable camcorder, viewfinder, navigator, vehicle, large wall, home appliance, information query equipment (such as business query equipment of e-government, bank, hospital, power and other departments, monitor, etc.).

[0137] Based on the same inventive concept, corresponding to any of the above embodiments, this application also provides a control method for a display device, the display device including a display substrate, a gate driving circuit disposed on the display substrate, and a voltage regulation system as described in any of the above claims, wherein a temperature measuring unit 1 of the voltage regulation system is disposed on the display substrate, and a power management unit 4 of the voltage regulation system is connected to the gate driving circuit.

[0138] refer to Figure 7 The control method includes:

[0139] Step S201: The temperature measurement unit 1 of the voltage regulation system collects the temperature information of the target device;

[0140] Step S202: The processing unit 2 of the voltage regulation system receives the temperature information and determines the target regulation information corresponding to the temperature information;

[0141] Step S203: The timing controller 3 of the voltage regulation system receives the target regulation information and outputs target timing control information corresponding to the target regulation information;

[0142] Step S204: The power management unit 4 of the voltage regulation system receives the target timing control information and outputs the target output voltage corresponding to the target timing control information to the target device.

[0143] The control method described herein has the beneficial effects of the corresponding voltage regulation system embodiments, which will not be elaborated further here.

[0144] It should be noted that the method in this embodiment can be executed by a single device, such as a computer or server. The method can also be applied in a distributed scenario, where multiple devices cooperate to complete the task. In such a distributed scenario, one of these devices may execute only one or more steps of the method in this embodiment, and the multiple devices will interact with each other to complete the method described.

[0145] It should be noted that the above description describes some embodiments of this application. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recorded in the claims can be performed in a different order than that shown in the above embodiments and still achieve the desired result. Furthermore, the processes depicted in the drawings do not necessarily require a specific or sequential order to achieve the desired result. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0146] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of this application (including the claims) is limited to these examples; within the framework of this application, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of different aspects of the embodiments of this application as described above, which are not provided in the details for the sake of brevity.

[0147] Additionally, to simplify the description and discussion, and to avoid obscuring the embodiments of this application, the well-known power / ground connections to integrated circuit (IC) chips and other components may or may not be shown in the provided drawings. Furthermore, the apparatus may be shown in block diagram form to avoid obscuring the embodiments of this application, and this also takes into account the fact that the details of the implementation of these block diagram apparatuses are highly dependent on the platform on which the embodiments of this application will be implemented (i.e., these details should be fully understood by those skilled in the art). While specific details (e.g., circuits) have been set forth to describe exemplary embodiments of this application, it will be apparent to those skilled in the art that the embodiments of this application can be implemented without these specific details or with variations thereof. Therefore, these descriptions should be considered illustrative rather than restrictive.

[0148] Although this application has been described in conjunction with specific embodiments thereof, many substitutions, modifications, and variations of these embodiments will be apparent to those skilled in the art from the foregoing description. For example, other memory architectures (e.g., dynamic RAM (DRAM)) may be used with the embodiments discussed.

[0149] The embodiments of this application are intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the embodiments of this application should be included within the protection scope of this application.

Claims

1. A voltage regulation system, characterized by, include: A temperature measuring unit, disposed on the display substrate of the display device, is configured to collect temperature information of a target device, which is a transistor in the gate driving circuit on the display substrate. The temperature measuring unit may include only one temperature sensor, which measures the temperature information of a specific transistor and calculates the temperature information of other transistors based on a pre-plotted temperature curve. Alternatively, the temperature measuring unit may include multiple temperature sensors, the number of which is less than the number of transistors. Each temperature sensor measures the temperature information of a specific transistor and calculates the temperature information of other transistors based on a pre-plotted temperature curve. The temperature curve is a pre-simulated and plotted graph depicting the relationship between the temperatures of the various transistors in the gate driving circuit. A processing unit, connected to the temperature measuring unit, is configured to receive the temperature information and determine target control information corresponding to the temperature information; A timing controller, connected to the processing unit, is configured to receive the target control information and output target timing control information corresponding to the target control information. A power management unit, connected to the timing controller, is configured to receive the target timing control information and output a target output voltage corresponding to the target timing control information to the target device.

2. The regulation system of claim 1, wherein, The processing unit is further configured to: Based on multiple preset temperature ranges, the target temperature range corresponding to the temperature information is determined; Output the target control information corresponding to the target temperature range; The plurality of preset temperature ranges include the target temperature range, and the plurality of preset temperature ranges correspond one-to-one with a plurality of control information, the plurality of control information including the target control information.

3. The regulation system of claim 1, wherein, The power management unit includes multiple registers, each register corresponding to a multiple timing control information, and each register stores an output voltage. The power management unit is also configured to: The target register is determined based on the target timing control information; The output voltage is obtained from the target register and output as the target output voltage to the target device; The plurality of registers include the target register, and the plurality of timing control information includes the target timing control information.

4. The regulation system of claim 1, wherein, The power management unit includes a register, and the power management unit is further configured to: update the original output voltage of the register to a target output voltage corresponding to the target timing control information based on the target timing control information, and output the target output voltage.

5. The control system according to claim 2, characterized in that, The plurality of preset temperature ranges include a first temperature range, a second temperature range, and a third temperature range, wherein the temperature of the first temperature range is higher than the temperature of the second temperature range, and the temperature of the second temperature range is higher than the temperature of the third temperature range.

6. The control system according to claim 5, characterized in that, The target output voltage includes the turn-on voltage and / or turn-off voltage of the transistor, and the turn-off voltage corresponding to the first temperature range is lower than the turn-off voltage corresponding to the second temperature range.

7. The control system according to claim 6, characterized in that, The turn-on voltage corresponding to the third temperature range is higher than the turn-on voltage corresponding to the second temperature range, and / or the turn-off voltage corresponding to the third temperature range is higher than the turn-off voltage corresponding to the second temperature range.

8. A voltage regulation method, characterized in that, The voltage regulation system is executed by a voltage regulation system, which includes a temperature measurement unit, a processing unit, a timing controller, and a power management unit. The control method includes: The temperature measuring unit is disposed on the display substrate of the display device and collects temperature information of the target device, which is a transistor in the gate driving circuit on the display substrate. The temperature measuring unit may include only one temperature sensor, which measures the temperature information of a specific transistor and calculates the temperature information of other transistors based on a pre-drawn temperature curve. Alternatively, the temperature measuring unit may include multiple temperature sensors, the number of which is less than the number of transistors. Each temperature sensor measures the temperature information of a specific transistor and calculates the temperature information of other transistors based on a pre-drawn temperature curve. The temperature curve is a pre-simulated and plotted graph depicting the relationship between the temperatures of the various transistors in the gate driving circuit. The processing unit receives the temperature information and determines the target control information corresponding to the temperature information; The timing controller receives the target control information and outputs target timing control information corresponding to the target control information; The power management unit receives the target timing control information and outputs the target output voltage corresponding to the target timing control information to the target device.

9. The control method according to claim 8, characterized in that, The step of receiving the temperature information and determining the target control information corresponding to the temperature information includes: Based on multiple preset temperature ranges, the target temperature range corresponding to the temperature information is determined; Output the target control information corresponding to the target temperature range; The plurality of preset temperature ranges include the target temperature range, and the plurality of preset temperature ranges correspond one-to-one with a plurality of control information, the plurality of control information including the target control information.

10. The control method according to claim 8, characterized in that, The power management unit includes a register. The step of receiving the target timing control information and outputting a target output voltage corresponding to the target timing control information to the target device includes: Based on the target timing control information, the original output voltage of the register is updated to the target output voltage corresponding to the target timing control information, and the target output voltage is output.

11. The control method according to claim 8, characterized in that, The power management unit includes multiple registers, each register corresponding to a multiple timing control information, and each register stores an output voltage. The step of receiving the target timing control information and outputting a target output voltage corresponding to the target timing control information to the target device includes: The target register is determined based on the target timing control information; The output voltage is obtained from the target register, and the output voltage is used as the target output voltage and output to the target device. The plurality of registers include the target register, and the plurality of timing control information includes the target timing control information.

12. A display device, characterized in that, include: Display substrate; A gate driving circuit, disposed on the display substrate, includes a target device; The voltage regulation system according to any one of claims 1 to 7; The temperature measurement unit of the voltage regulation system is disposed on the display substrate, the power management unit of the voltage regulation system is connected to the gate driving circuit, and the voltage regulation system is configured to output a target output voltage corresponding to the temperature information to the target device of the gate driving circuit according to the temperature information collected by the temperature measurement unit.

13. A control method for a display device, characterized in that, The display device includes a display substrate, a gate driving circuit disposed on the display substrate, and a voltage regulation system according to any one of claims 1 to 7, wherein a temperature measuring unit of the voltage regulation system is disposed on the display substrate, and a power management unit of the voltage regulation system is connected to the gate driving circuit. The control method includes: The temperature measurement unit of the voltage regulation system collects the temperature information of the target device; The processing unit of the voltage regulation system receives the temperature information and determines the target regulation information corresponding to the temperature information; The timing controller of the voltage regulation system receives the target regulation information and outputs target timing control information corresponding to the target regulation information; The power management unit of the voltage regulation system receives the target timing control information and outputs the target output voltage corresponding to the target timing control information to the target device.

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