Display device and display driving method

Abstract

The present application provides a display device and a display driving method, relating to the field of display technology. The display device includes: a display panel, a control circuit, a power management circuit, and a gate drive circuit. The display panel includes at least one temperature detection component. The temperature detection component is disposed in a target routing area, which is a routing area in a non-display area of ​​the display panel near a binding area. The temperature detection component is electrically connected to the control circuit and is configured to detect the temperature of the target routing area. The control circuit is configured to obtain a temperature detection result based on a detection voltage signal, generate a first control signal, and transmit it to the power management circuit. The power management circuit is configured to reduce the amplitude of a gate drive circuit signal transmitted to the display panel in response to the first control signal. This can improve overheating of the display panel and reduce the display panel temperature.

Description

Technical Field

[0001] The present application relates to the field of display technology, and in particular to a display device and a display driving method. Background Art

[0002] The dense wiring in the display panel's wiring area is prone to heat accumulation, leading to overheating. For liquid crystal displays, if the display panel temperature exceeds the clearing point of the liquid crystal, it can cause the display panel to appear black. Overheating can also easily lead to problems such as polarizer tearing. As the refresh rate and resolution of display panels continue to increase, overheating in the wiring area will become increasingly serious. Summary of the Invention

[0003] The present application provides a display device and a display driving method, which can solve the problem that heat is easily accumulated in the wiring area of ​​the display panel due to dense wiring, resulting in overheating of the display panel.

[0004] In a first aspect, the present application provides a display device, comprising: a display panel, a control circuit, and a power management circuit; the display panel comprises at least one temperature detection component;

[0005] The temperature detection component is disposed in a target wiring area, which is a wiring area in a non-display area of ​​the display panel close to a binding area; the temperature detection component is electrically connected to the control circuit; the temperature detection component is configured to detect a temperature in the target wiring area and send a detection voltage signal to the control circuit;

[0006] The control circuit is also electrically connected to the power management circuit; the control circuit is used to obtain a temperature detection result according to the detection voltage signal, generate a first control signal according to the temperature detection result, and send the first control signal to the power management circuit;

[0007] The power management circuit is also electrically connected to the display panel; the power management circuit is used to reduce the amplitude of the gate drive circuit signal sent to the display panel in response to the first control signal.

[0008] Optionally, the temperature detection component includes N first transistors connected in series; control electrodes of the N first transistors are electrically connected to each other; wherein N is a positive integer, and N is greater than 1;

[0009] The control electrode of the first transistor is electrically connected to the first electrode and serves as the first end of the temperature detection component for receiving a constant current;

[0010] The first electrode of the i-th first transistor is electrically connected to the second electrode of the (i-1)-th first transistor; wherein i is greater than 1 and i is less than or equal to N, and i is a positive integer;

[0011] The second electrode of the Nth first transistor serves as the second end of the temperature detection component, and is used to connect to the control circuit.

[0012] Optionally, the temperature detection component includes a first transistor for receiving a constant current;

[0013] The control electrode of the first transistor is electrically connected to the first electrode, serving as the first end of the temperature detection component;

[0014] The second electrode of the first transistor serves as the second end of the temperature detection component and is used to connect to the control circuit.

[0015] Optionally, the display panel further includes a load component and a common electrode line;

[0016] The first end of the temperature detection component is electrically connected to the common electrode line, and is used to receive the common electrode voltage transmitted by the common electrode line;

[0017] The first end of the load component is electrically connected to the second end of the temperature detection component, and the second end of the load component is grounded, and is configured to generate the constant current according to the common electrode voltage.

[0018] Optionally, the load component includes a first resistor or a second transistor;

[0019] One end of the first resistor serves as the first end of the load component, and the other end serves as the second end of the load component;

[0020] Alternatively, the control electrode of the second transistor is electrically connected to the first electrode, serving as the first end of the load component, and the second electrode serves as the second end of the load component.

[0021] Optionally, the display device further includes a gate driving circuit, and the gate driving circuit is provided on the display panel; the display panel includes a power signal line and a gate signal line;

[0022] The power management circuit is electrically connected to the gate drive circuit through the power signal line; the gate drive circuit is electrically connected to the gate signal line; and the power signal line passes through the target routing area.

[0023] Optionally, the target routing area includes at least one first routing area; the first routing area is located at a panel corner close to the binding area in the non-display area of ​​the display panel;

[0024] The power signal line passes through the first routing area; the first routing area is provided with at least one temperature detection component.

[0025] Optionally, the control circuit includes an analog-to-digital conversion module and a temperature control module;

[0026] The analog-to-digital conversion module is electrically connected to the temperature detection component and the temperature control module respectively, and is used to perform analog-to-digital conversion on the detection voltage signal and send the obtained first digital signal to the temperature control module;

[0027] The temperature control module is also electrically connected to the power management circuit, and is used to obtain the temperature detection result based on the first digital signal and a preset temperature-voltage control relationship, and generate the first control signal when the temperature detection result indicates that the current temperature of the target routing area is greater than the panel temperature threshold, and send the first control signal to the power management circuit.

[0028] Optionally, the control circuit further includes a communication module;

[0029] The temperature control module is electrically connected to the power management circuit through the communication module;

[0030] The communication module is used to send the first control signal sent by the temperature control module to the power management circuit.

[0031] Optionally, the display device further comprises: a first circuit board for driving control; the first circuit board is electrically connected to the display panel;

[0032] The control circuit and the power management circuit are arranged on the first circuit board.

[0033] Optionally, the display device further comprises: a second circuit board for data transmission, a data transmission cable, and a source driving circuit provided on a chip-on-film package;

[0034] The first circuit board is electrically connected to the second circuit board via the data transmission cable; the second circuit board is electrically connected to the display panel via the chip-on-film package;

[0035] The display panel further includes a source signal line; the source driving circuit is electrically connected to the source signal line.

[0036] In a second aspect, the present application provides a display driving method, applied to the display device according to the first aspect, the display driving method comprising:

[0037] The temperature detection component detects the temperature of the target wiring area and sends a detection voltage signal to the control circuit;

[0038] The control circuit obtains a temperature detection result according to the detection voltage signal, generates a first control signal according to the temperature detection result, and sends the first control signal to the power management circuit;

[0039] The power management circuit reduces the amplitude of the gate driving circuit signal sent to the display panel in response to the first control signal.

[0040] Optionally, the control circuit obtains a temperature detection result according to the detection voltage signal, generates a first control signal according to the temperature detection result, and sends the first control signal to the power management circuit, including:

[0041] The analog-to-digital conversion module performs analog-to-digital conversion on the detection voltage signal and sends the obtained first digital signal to the temperature control module;

[0042] The temperature control module obtains the temperature detection result based on the first digital signal and a preset temperature-voltage control relationship, and generates the first control signal when the temperature detection result indicates that the current temperature of the target routing area is greater than the panel temperature threshold, and sends the first control signal to the power management circuit.

[0043] Optionally, the temperature detection component detects the temperature of the target wiring area and sends a detection voltage signal to the control circuit, including:

[0044] The temperature detection component uses the transistor voltage drop between the first end and the second end as the detection voltage signal and sends the detection voltage signal to the control circuit; wherein the transistor voltage drop is generated based on the common electrode voltage transmitted by the common electrode line.

[0045] The display device and display driving method provided in this application have at least the following advantages:

[0046] By setting at least one temperature detection component in the target wiring area of ​​the display panel, the temperature of the target wiring area is detected by the temperature detection component, and a detection voltage signal is sent to the control circuit. The control circuit can obtain the temperature detection result based on the detection voltage signal. The target wiring area is the wiring area in the non-display area of ​​the display panel that is close to the binding area. Since the temperature detection component is directly set in the target wiring area of ​​the display panel, the temperature of the target wiring area can be detected more accurately, thereby monitoring the heating phenomenon of the target wiring area in real time. Since the control circuit generates a first control signal based on the temperature detection result and sends the first control signal to the power management circuit, the power management circuit is controlled to reduce the amplitude of the gate drive circuit signal sent to the display panel. In this way, the thermal effect generated by the signal during transmission in the target wiring area can be reduced, thereby reducing the temperature of the target wiring area and improving the overheating phenomenon of the display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments of the present application or related technologies. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0048] Figure 1 The following is a schematic structural diagram of a display device provided by an embodiment of the present application;

[0049] Figure 2 The following is a schematic diagram showing the structure of a temperature detection component provided by an embodiment of the present application;

[0050] Figure 3 The following is a schematic structural diagram of another temperature detection component provided by an embodiment of the present application;

[0051] Figure 4 A schematic diagram exemplarily shows the relationship between the PLG temperature and the detection voltage signal in a display device provided by an embodiment of the present application;

[0052] Figure 5 A schematic diagram exemplarily shows the relationship between the PLG temperature and the VGH voltage in a display device provided by an embodiment of the present application;

[0053] Figure 6 The following is a schematic structural diagram of another display device provided by an embodiment of the present application;

[0054] Figure 7 The following is a flowchart showing the steps of a display driving method provided by an embodiment of the present application. DETAILED DESCRIPTION

[0055] The following will be combined with the accompanying drawings in some embodiments to clearly and completely describe the technical solutions in some embodiments. Obviously, the embodiments described are part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of this application.

[0056] The transistor in some embodiments may be a thin film transistor (TFT) or a metal oxide semiconductor (MOS) field effect transistor. The control electrode of the transistor may be a gate electrode, the first electrode may be a source electrode or a drain electrode, and the second electrode may be a drain electrode or a source electrode. For example, it may be an N-type TFT or a P-type TFT, which is not limited in the present embodiment.

[0057] Current high-resolution, high-refresh-rate display panels often experience overheating in their trace areas. This is especially true for display panels that use a gate driver on array (GOA) circuit. The PLG traces are thin and heat accumulates at the highest points on the panel, creating the highest temperatures. The PLGs are located at the corners of the display panel. Overheating can easily lead to problems such as blackening (temperature exceeding the clearing point of the liquid crystal) and tearing of the polarizer (POL).

[0058] Figure 1 A schematic structural diagram of a display device provided in an embodiment of the present application is shown as an example. Figure 1 As shown, the display device includes: a display panel 101, a control circuit 102 and a power management circuit 103; the display panel 101 includes at least one temperature detection component 1011;

[0059] The temperature detection component 1011 is disposed in a target wiring area, which is a wiring area in the non-display area of ​​the display panel 101 and close to the binding area. The temperature detection component 1011 is electrically connected to the control circuit 102. The temperature detection component 1011 is configured to detect the temperature of the target wiring area and transmit a detection voltage signal to the control circuit 102.

[0060] The control circuit 102 is also electrically connected to the power management circuit 103; the control circuit 102 is used to obtain a temperature detection result according to the detection voltage signal, generate a first control signal according to the temperature detection result, and send the first control signal to the power management circuit 103;

[0061] The power management circuit 103 is also electrically connected to the display panel 101 ; the power management circuit 103 is configured to reduce the amplitude of the gate drive circuit signal sent to the display panel 101 in response to the first control signal.

[0062] In some embodiments, the control circuit 102 may be a circuit composed of modular units with different functions, or may be an integrated circuit, such as a microcontroller unit (MCU) or a timing controller (TCON). The power management circuit 103 is used to manage the power supply voltage signal involved in the display device. The power management circuit 103 may adopt an integrated power management IC (PMIC).

[0063] In an embodiment of the present application, a temperature detection component 1011 is provided in the display panel 101. The temperature detection component 1011 may be a temperature sensor or a transistor component for temperature sensing. In this embodiment, the transistor component for temperature sensing is referred to as a temperature-sensing transistor component. The temperature-sensing transistor component measures temperature by utilizing the characteristic that the forward voltage drop of the transistor PN junction changes with temperature under a constant current. Among them, the transistor used for temperature sensing in the temperature-sensing transistor component may be a semiconductor device such as a crystal diode, a crystal triode, a field effect transistor, or a thin film transistor (TFT). The transistor used for temperature sensing is connected in a diode manner, for example, the gate and drain of the thin film transistor are short-circuited so that the thin film transistor operates in the form of a diode.

[0064] In some embodiments, the temperature detection component 1011 may include one or more transistors for temperature sensing, wherein each transistor for temperature sensing is connected in a diode manner. If there are multiple transistors for temperature sensing, multiple transistors may be connected in series in a diode manner. For example, if five switching diodes are connected in series, due to the negative temperature characteristics of the diode PN junction, the forward voltage drop between the first end and the second end of the temperature detection component 1011 will change by 15mV when the temperature changes by 1°C. In practical applications, within the temperature range of -80 to 120°C, the forward voltage drop has a good linear relationship with the temperature. The temperature coefficient is approximately -2.3mv / °C, that is, when the temperature increases (decreases), the forward voltage drop increases (decreases). Therefore, by detecting the change in the forward voltage drop on the PN junction under the action of a constant current, the temperature change can be inferred.

[0065] In some embodiments, the display panel 101 includes a display area and a non-display area, and the target routing area is located in the non-display area. Specifically, the target routing area is the routing area in the non-display area of ​​the display panel 101 near the binding area. Optionally, the target routing area may include one or more gate drive circuit drive signal lines, such as a DC signal VGH signal line, a clock signal line, a low-voltage signal line, an initial trigger signal (STV) line, and a power signal line VDD for a noise reduction circuit. The display panel 101 includes at least one temperature detection component 1011. The temperature detection component 1011 can be positioned at any location in the target routing area where temperature measurement is required. For example, the temperature detection component 1011 can be positioned at a location with dense routing in the non-display area of ​​the display panel 101 near the binding area. The temperature detection component 1011 can better detect overheating in the densely routing location and provide timely feedback to the control circuit 102, allowing the control circuit 102 to take effective measures to reduce the temperature of the display panel 101. The number of temperature detection components 1011 can be determined based on actual application requirements and is not limited in this embodiment of the present application.

[0066] In some embodiments, the control circuit 102 may pre-store a temperature-voltage mapping relationship and a panel temperature threshold, or obtain the temperature-voltage mapping relationship and the panel temperature threshold from a storage module of the display device. The temperature-voltage mapping relationship represents the mapping relationship between the temperature value of the display panel 101 and the voltage value of the detection voltage signal. The panel temperature threshold may represent the maximum temperature value that ensures that the display panel 101 can display the image normally.

[0067] In some embodiments, the control circuit 102 can compare the detection voltage signal sent by the temperature detection component 1011 with the voltage value in the temperature-voltage comparison relationship, determine the temperature value corresponding to the voltage value of the detection voltage signal, and obtain the temperature value corresponding to the position of the temperature detection component 1011 as the temperature detection result. The control circuit 102 then compares the temperature value of the temperature detection result with the panel temperature threshold. If the current temperature value is greater than the panel temperature threshold, it means that the temperature at the position of the temperature detection component 1011 is too high, that is, the corresponding target wiring area is overheated. In this way, the control circuit 102 can generate a first control signal, which is used to instruct the power management circuit 103 to reduce the amplitude of the output power voltage signal to reduce the temperature of the target wiring area of ​​the display panel 101 and improve the overheating phenomenon of the display panel 101.

[0068] In some embodiments, the power management circuit 103 is electrically connected to the display panel 101 and is configured to provide a gate drive circuit signal to the display panel 101. The power management circuit 103 receives a first control signal from the control circuit 102 and, in response to the first control signal, reduces the amplitude of the gate drive circuit signal and transmits the gate drive circuit signal with the reduced amplitude to the display panel 101. When the gate drive circuit signal is transmitted along the signal line and passes through a target trace area of ​​the display panel 101, the thermal effect caused by the signal transmission is reduced due to the reduced signal amplitude, thereby lowering the temperature of the target trace area.

[0069] For example, the power management circuit 103 is electrically connected to the gate drive circuit 104 via a drive signal line, and the gate drive circuit 104 is electrically connected to the pixel circuit of the display panel 101 via the gate signal line. The gate drive circuit 104 is provided on the display panel 101, that is, the gate drive circuit 104 is a GOA circuit, and the power management circuit 103 is provided on a circuit board independent of the display panel 101. In this case, the drive signal line will pass through the target wiring area of ​​the display panel 101. At this time, because the gate drive circuit signal has a reduced amplitude, the temperature of the target wiring area can be reduced.

[0070] An embodiment of the present application provides a display device that provides at least one temperature detection component 1011 in a target wiring area of ​​a display panel 101. The temperature detection component 1011 detects the temperature of the target wiring area and sends a detection voltage signal to a control circuit 102. The control circuit 102 can obtain a temperature detection result based on the detection voltage signal. The target wiring area is a wiring area in the non-display area of ​​the display panel 101 that is close to the binding area. Since the temperature detection component 1011 is directly disposed in the target wiring area of ​​the display panel 101, the temperature of the target wiring area can be detected more accurately, thereby monitoring the heating phenomenon in the target wiring area in real time. Since the control circuit 102 generates a first control signal based on the temperature detection result and sends the first control signal to the power management circuit 103, the power management circuit 103 controls the power management circuit 103 to reduce the amplitude of the gate drive circuit signal sent to the display panel 101. In this way, the thermal effect generated during the signal transmission in the target wiring area can be reduced, thereby reducing the temperature of the target wiring area and improving the overheating phenomenon of the display panel 101.

[0071] Optionally, the temperature detection component 1011 includes a first transistor;

[0072] The control electrode of the first transistor is electrically connected to the first electrode, serving as the first end of the temperature detection component 1011 for receiving a constant current; the second electrode of the first transistor serves as the second end of the temperature detection component 1011 for connecting to the control circuit 102.

[0073] In some embodiments, the temperature detection component 1011 may include a first transistor, and the first transistor may be diode-connected, that is, the control electrode of the first transistor is electrically connected to the first electrode, serving as the first end of the temperature detection component 1011 for receiving a constant current, and the second electrode of the first transistor serves as the second end of the temperature detection component 1011 and is electrically connected to the control circuit 102. In this way, the temperature can be measured by utilizing the characteristic that the forward voltage drop of the PN junction of the first transistor changes with temperature under the action of a constant current, and the change in the forward voltage drop is sent to the control circuit 102 as a detection voltage signal.

[0074] In the embodiment of the present application, by connecting a first transistor as a diode, the temperature detection of the position where the first transistor is located can be conveniently achieved, which has the advantages of simple structure and low hardware cost, takes up little space on the display panel 101, and is highly practical.

[0075] Optionally, the temperature detection component 1011 includes N first transistors connected in series; the control electrodes of the N first transistors are electrically connected to each other; wherein N is a positive integer, and N is greater than 1;

[0076] The control electrode of the first first transistor is electrically connected to the first electrode, serving as the first end of the temperature detection component 1011, and configured to receive a constant current;

[0077] The first electrode of the i-th first transistor is electrically connected to the second electrode of the (i-1)-th first transistor; wherein i is greater than 1 and i is less than or equal to N, and i is a positive integer;

[0078] The second electrode of the Nth first transistor serves as the second end of the temperature detection component 1011 and is used to connect to the control circuit 102 .

[0079] In the embodiment of the present application, since the transistor PN junction has a negative temperature characteristic, that is, for every 1°C increase in temperature, the forward voltage drop of a single PN junction decreases by approximately 3mV, multiple PN junctions can be connected in series to achieve a larger voltage drop variation. For more precise temperature control, the temperature detection component 1011 may include N first transistors connected in series, where N is a positive integer and N is greater than 1. That is, the temperature detection component 1011 may include multiple first transistors, and the multiple first transistors connected in series are connected in series.

[0080] For example, if five switching diodes are connected in series to form the temperature detection component 1011, then for every 1°C change in temperature, there will be a change of 15mV / °C. In this way, when the temperature at the location of the temperature detection component 1011 changes, the forward voltage drop between the first end and the second end of the temperature detection component 1011 will change more significantly, which can achieve more accurate temperature detection and thus achieve fine temperature control. However, the number of first transistors in series is limited by the layout space and wiring space, and can be flexibly adjusted according to actual application requirements. The embodiments of the present application do not impose any restrictions on this.

[0081] Specifically, among the N first transistors connected in series, the first first transistor and the Nth first transistor are located at both ends of the temperature detection component 1011. The control electrode of the first first transistor is electrically connected to the first electrode, so that the first first transistor works in the form of a diode and serves as the first end of the temperature detection component 1011. The second electrode of the Nth first transistor serves as the second end of the temperature detection component 1011. In addition, the first electrode of the i-th first transistor connected in series is electrically connected to the second electrode of the adjacent i-1-th first transistor, and the control electrodes of the N first transistors are electrically connected to each other, so that the i-th first transistor works in the form of a diode, where i is a positive integer greater than 1 and less than or equal to N.

[0082] In an embodiment of the present application, the temperature detection component 1011 can adopt N first transistors connected in series, and the N first transistors are respectively connected using diodes. When the temperature of the location where the temperature detection component 1011 is located changes, the voltage drop between the first end and the second end of the temperature detection component 1011 will change more obviously, which can improve the sensitivity of the temperature detection component 1011, so that the detection voltage signal sent by the temperature detection component 1011 to the control circuit 102 is more accurate, so that the control circuit 102 can achieve more precise temperature control.

[0083] Optionally, the first transistor is a thin film transistor;

[0084] The control electrode of the first transistor is the gate electrode of the thin film transistor; the first electrode of the first transistor is the drain electrode of the thin film transistor; and the second electrode of the first transistor is the source electrode of the thin film transistor.

[0085] In some embodiments, the first transistor may be a thin film transistor (TFT), the control electrode of the thin film transistor is the gate, the first electrode may be the source electrode or the drain electrode, and the second electrode is the drain electrode or the source electrode. The thin film transistor adopts a diode connection method, that is, the gate electrode and the drain electrode / source electrode are short-circuited together as the first end of the temperature detection component 1011, and the other electrode serves as the second end of the temperature detection component 1011. Among them, the thin film transistor can be a TFT of the same type as that in the pixel circuit of the display panel 101. This is only an example, and the embodiments of the present application are not limited to this.

[0086] Optionally, the display panel 101 further includes a load component and a common electrode line;

[0087] The first end of the temperature detection component 1011 is electrically connected to the common electrode line, and is used to receive the common electrode voltage transmitted by the common electrode line;

[0088] The first end of the load component is electrically connected to the second end of the temperature detection component 1011 , and the second end of the load component is grounded, and is configured to generate a constant current according to the common electrode voltage.

[0089] In some embodiments, the display device may be a liquid crystal display device, and the constant current may be obtained using a common electrode voltage (VCOM). Specifically, the display panel 101 further includes a load component and a common electrode line. The first end of the temperature detection component 1011 is electrically connected to the common electrode line, and the common electrode line may be electrically connected to a module that provides the common electrode voltage. For example, the display panel 101 may further include a gamma chip, which may be a module that provides the common electrode voltage. The common electrode voltage may be a constant voltage.

[0090] In some embodiments, the first end of the temperature detection component 1011 is electrically connected to the common electrode line, the second end of the temperature detection component 1011 is electrically connected to the first end of the load component, and the second end of the load component is grounded. In this way, the common electrode voltage transmitted by the common electrode line is applied to the temperature detection component 1011 and the load component to generate a constant current, so that the constant current acts on the PN junction of the transistor, thereby achieving temperature measurement through the temperature detection component 1011. In addition, the temperature detection component 1011 adds a conditional path between the common electrode line and the ground terminal, which can improve the Vcom electrode discharge capability and electrostatic discharge (ESD) capability of the display panel 101.

[0091] In the embodiment of the present application, the first and second ends of the temperature detection component 1011 are electrically connected to the common electrode line and the load component, respectively, and the second end of the load component is grounded. In this way, the temperature detection component 1011 and the load component can generate a constant current under the action of the common electrode voltage transmitted by the common electrode line, so that the constant current flows through the temperature detection component 1011, thereby achieving temperature measurement through the temperature detection component 1011, which is highly practical.

[0092] Optionally, the load component includes a first resistor or a second transistor;

[0093] One end of the first resistor serves as a first end of the load component, and the other end serves as a second end of the load component;

[0094] Alternatively, the control electrode of the second transistor is electrically connected to the first electrode and serves as the first end of the load component, and the second electrode serves as the second end of the load component.

[0095] In some embodiments, a resistor or a transistor can be selected as a load, that is, the load component includes a first resistor or a second transistor, wherein the number of the first resistor or the second transistor can be one or more, and multiple first resistors or multiple second transistors can be connected in series or in parallel. The embodiments of the present application do not limit this.

[0096] Specifically, one end of the first resistor or the first electrode of the second transistor is electrically connected to the second end of the temperature detection component 1011, and the other end of the first resistor or the second electrode of the second transistor is grounded. The control electrode of the second transistor is electrically connected to the first electrode, that is, the second transistor is also connected in a diode configuration, which is the same as the first transistor.

[0097] like Figure 2 As shown, the temperature detection component 1011 includes a first transistor, which is a thin film transistor (TFT) D1. The gate and drain of D1 are short-circuited and electrically connected to the common electrode line. D1 works in the form of a diode and can receive the common electrode voltage (VCOM). The load component includes a first resistor (R1). The source of D1 is electrically connected to one end of the resistor R1, and the other end of the resistor R1 is grounded (GND). The voltage at the middle node between the temperature detection component 1011 and the load component is VD1, and VD1 can be sent to the control circuit 102 as a detection voltage signal. The control circuit 102 can pre-store the voltage value of VCOM. When the circuit is stable, the voltage drop across D1 is VCOM-VD1. The higher VD1 is, the smaller the voltage drop of D1 is, indicating that the temperature at the location of the temperature detection component 1011 is higher.

[0098] like Figure 3 As shown, the temperature detection component 1011 includes 5 first transistors connected in series, namely thin film transistors (TFTs) D1 to D5. The gates of D1 to D5 are electrically connected to each other. The gate and drain of D1 are short-circuited and connected to the common electrode line to receive the common electrode voltage (VCOM). In the series-connected D2 to D4, the drain of each TFT is electrically connected to the source of the previous TFT, and the source is electrically connected to the drain of the next TFT. The source of D5 is electrically connected to one end of the resistor R1, and the other end of the resistor R1 is grounded (GND). In this way, all 5 TFTs are diode-connected. When the circuit is stable, the voltage drop across the two ends of the temperature detection component 1011 is VCOM-VD1. The higher VD1 is, the smaller the voltage drop of the temperature detection component 1011 is.

[0099] Optionally, the display device includes a gate driving circuit 104, which is provided on the display panel 101; the display panel 101 includes a power signal line and a gate signal line;

[0100] The power management circuit 103 is electrically connected to the gate driving circuit 104 via a power signal line; the gate driving circuit 104 is electrically connected to the gate signal line; and the power signal line passes through the target routing area.

[0101] In some embodiments, the gate driver circuit 104 may be provided on a driver chip independent of the display panel 101, or may be a GOA circuit. The gate driver circuit 104 may be a cascaded shift register. This is merely an example and is not limited in the present application.

[0102] In some embodiments, the gate drive circuit 104 may be a GOA circuit, which is located on the display panel 101. The GOA circuit may be located in the display area or the non-display area, and this is not limited in the present embodiment. The power management circuit 103 is electrically connected to the gate drive circuit 104 via a power signal line on the display panel 101, and the gate drive circuit 104 is further electrically connected to the pixel circuit of the display panel 101 via the gate signal line. Specifically, the power signal line passes through the target routing area, and the power supply voltage signal sent by the power management circuit 103 to the power signal line will cause a thermal effect when transmitted in the power signal line.

[0103] In an embodiment of the present application, when the temperature detection result indicates that the target wiring area of ​​the display panel 101 is overheated, the control circuit 102 controls the power management circuit 103 to reduce the amplitude of the power supply voltage signal, which can reduce the thermal effect caused by the power supply voltage signal in the target wiring area, thereby reducing the temperature of the target wiring area and improving the overheating phenomenon of the display panel 101.

[0104] Optionally, the target routing area includes at least one first routing area; the first routing area is located at a panel corner close to the binding area in the non-display area of ​​the display panel 101;

[0105] The power signal line passes through the first routing area; at least one temperature detection component 1011 is provided in the first routing area.

[0106] In the embodiment of the present application, for a display panel 101 employing a GOA circuit, the PLG routing location within the display panel 101 is referred to as the first routing area, i.e., the panel corner in the non-display area near the bonding area. The target routing area may include two first routing areas, one located at a corner on either side of the display panel 101. The power signal line passes through the first routing area, and due to the dense routing in the first routing area, heat is easily accumulated, causing overheating of the display panel 101.

[0107] In some embodiments, at least one temperature detection component 1011 can be set in the first routing area to measure the temperature of the first routing area. For the first routing area, if multiple temperature detection components 1011 are set, then the first routing area will have multiple detection voltage signals sent to the control circuit 102. The control circuit 102 can perform mean or median processing on the multiple detection voltage signals to obtain the temperature detection results corresponding to the first routing area. For multiple first routing areas, after obtaining the temperature detection results corresponding to each first routing area, the control circuit 102 can perform mean or median processing on the temperature detection results corresponding to the multiple first routing areas. This is just an example. In addition to mean or median processing, other data processing methods can also be selected, and the embodiments of the present application do not limit this.

[0108] In an embodiment of the present application, for a display device in which a gate drive circuit 104 is arranged on a display panel 101, at a panel corner near a binding area in a non-display area of ​​the display panel 101, heat may easily accumulate due to dense routing of power signal lines, leading to overheating of the panel corner. By setting at least one temperature detection component 1011 in a first routing area corresponding to a binding area in the non-display area of ​​the display panel 101, the temperature of the first routing area can be conveniently measured by the temperature detection component 1011, thereby realizing real-time temperature monitoring of the panel corner. In order to send a corresponding detection voltage signal to the control circuit 102 in a timely manner when the panel corner is overheated, the control circuit 102 can efficiently perform temperature control and improve the cooling effect of the display device.

[0109] In some embodiments, the gate drive circuit 104 can be provided on a driver chip independent of the display panel 101. The gate drive circuit 104 is electrically connected to the gate signal lines of the display panel 101 and can send gate drive signals to the gate signal lines. In the target routing area, at the panel corner near the binding area in the non-display area of ​​the display panel 101, the gate signal lines are densely routed, which can easily cause heat accumulation and cause overheating of the display panel 101. In this embodiment, the portion of the target routing area at the panel corner is referred to as the second routing area. The target routing area may include two second routing areas, one located at the panel corner on both sides of the display panel 101.

[0110] In some embodiments, at least one temperature detection component 1011 can be provided in the second routing area to measure the temperature of the second routing area. For a second routing area, the data processing method corresponding to the detection voltage signal of the temperature detection component 1011 in the first routing area can be referred to in the aforementioned embodiment to obtain the temperature detection result corresponding to the second routing area, and no further description is given here.

[0111] In an embodiment of the present application, at the panel corner near the binding area in the non-display area of ​​the display panel 101, the panel corner may overheat due to the dense routing of the gate signal line, which may easily accumulate heat. By setting at least one temperature detection component 1011 in the second routing area corresponding to the panel corner at the edge of the display panel 101 near the gate drive circuit 104, the temperature of the second routing area can be conveniently measured by the temperature detection component 1011 to realize real-time temperature monitoring of the panel corner, so that when the panel corner is overheated, the corresponding detection voltage signal is sent to the control circuit 102 in time, so that the control circuit 102 can efficiently perform temperature control and improve the cooling effect of the display device.

[0112] Optionally, the control circuit 102 includes an analog-to-digital conversion module and a temperature control module;

[0113] The analog-to-digital conversion module is electrically connected to the temperature detection component 1011 and the temperature control module, and is used to perform analog-to-digital conversion on the detection voltage signal and send the obtained first digital signal to the temperature control module;

[0114] The temperature control module is also electrically connected to the power management circuit 103, and is used to obtain a temperature detection result based on the first digital signal and a preset temperature-voltage control relationship, and generate a first control signal when the temperature detection result indicates that the current temperature of the target routing area is greater than the panel temperature threshold, and send the first control signal to the power management circuit 103.

[0115] In some embodiments, the aforementioned embodiments mentioned that for every 1°C increase in the ambient temperature at the location of the temperature-sensing transistor component, the forward voltage drop of the PN junction of a single transistor will decrease by 3mV, so the detection voltage signal is a mV-level signal. The control circuit 102 needs to amplify the detection voltage signal before processing. The analog-to-digital conversion module in the control circuit 102 may include a signal amplification unit and an analog-to-digital conversion unit, such as an amplifier and an analog-to-digital converter (ADC). The signal amplification unit amplifies the detection voltage signal and sends it to the analog-to-digital conversion unit, which performs analog-to-digital conversion on the amplified detection voltage signal to obtain a first digital signal.

[0116] In some embodiments, the temperature control module may pre-store a temperature-voltage comparison relationship, referred to as a first comparison relationship, which characterizes the correspondence between the voltage value of the detection voltage signal and the ambient temperature of the location where the temperature detection component 1011 is located. The first comparison relationship may be a diode temperature table corresponding to the first transistor of the diode connection in the temperature-sensing transistor component, also known as a bandgap temperature table, or a temperature characteristic curve of the transistor PN junction. This is merely an example, and the embodiments of the present application are not limited to this. Among them, the diode temperature table (bandgap temperature table) on a silicon-based semiconductor can detect temperature through a simple diode temperature-voltage drop curve, and the temperature characteristics of a glass-based TFT are similar to those of a silicon-based one. The temperature control module compares the voltage value of the detection voltage signal with the voltage value in the diode temperature table or the temperature characteristic curve to obtain a temperature value corresponding to the voltage value, which is the current temperature of the location where the temperature detection component 1011 is located, and is also the temperature detection result of the temperature detection component 1011 on the target routing area.

[0117] In some embodiments, the temperature control module may also pre-store a comparison relationship between the ambient temperature of the target routing area and the power supply voltage signal, referred to as a second comparison relationship. After the temperature control module obtains the temperature detection result, it may compare the temperature detection result with the panel temperature threshold. If the current temperature of the target routing area is greater than the panel temperature threshold, it indicates that the target routing area is overheating, and the temperature control module is required to perform temperature control to reduce the temperature of the target routing area. The temperature control module may compare the current temperature of the target routing area with the pre-stored second comparison relationship to determine the extent to which the power supply voltage signal needs to be reduced. The module may then generate a first control signal based on the extent to which the power supply voltage signal needs to be reduced, and transmit the first control signal to the power management circuit 103.

[0118] For example, for a liquid crystal display device, an N-type TFT is used in the pixel circuit of the display panel 101, and the power supply voltage signal is the gate-on voltage VGH. The temperature control module can send a first control signal to the power management circuit 103 to control the power management circuit 103 to reduce the amplitude of the gate-on voltage VGH. Figure 4 The PLG temperature (T PLG ) and the corresponding relationship between the detection voltage signal (VCOM–VD), Figure 5 Shows T PLG The corresponding relationship with the gate turn-on voltage (VGH).

[0119] In an embodiment of the present application, the detection voltage signal is subjected to analog-to-digital conversion processing by an analog-to-digital conversion module, and the obtained first digital signal is sent to the temperature control module. The temperature control module obtains a temperature detection result based on the first digital signal and a preset temperature-voltage comparison relationship. In this way, the temperature of the target wiring area can be efficiently monitored. When the temperature detection result indicates that the current temperature of the target wiring area is greater than the panel temperature threshold, a first control signal is generated, and the first control signal is sent to the power management circuit 103. When overheating occurs in the target wiring area, timely improvement measures can be taken to control the power management circuit 103 to reduce the amplitude, thereby improving the efficiency of temperature control of the display panel 101.

[0120] Optionally, the control circuit 102 further includes a communication module;

[0121] The temperature control module is electrically connected to the power management circuit 103 via the communication module;

[0122] The communication module is used to send the first control signal sent by the temperature control module to the power management circuit 103.

[0123] In some embodiments, the control circuit 102 and the power management circuit 103 can communicate via a communication bus. The control circuit 102 can include a communication module, which can include a communication interface. The power management circuit 103 can include a corresponding communication interface, and the communication interfaces can be connected via a communication bus. The temperature control module sends the first control signal to the communication module, which then sends the signal to the power management module via the communication bus.

[0124] For example, the control circuit 102 may be an MCU, and the power management circuit 103 may be a PMIC. The MCU and PMIC may be connected via an Inter-Integrated Circuit (IIC) bus. After the MCU performs analog-to-digital conversion and algorithm processing on the detection voltage signal, it controls the PMIC via the IIC bus to change the VGH voltage in real time based on a pre-stored TFT temperature characteristic curve, thereby automatically reducing the VGH voltage at high temperatures.

[0125] Optionally, the display device further includes: a first circuit board for driving control; the first circuit board is electrically connected to the display panel 101;

[0126] The control circuit 102 and the power management circuit 103 are disposed on the first circuit board.

[0127] In some embodiments, the control circuit 102 and the power management circuit 103 can be provided on a single circuit board, which in this embodiment is referred to as a first circuit board for drive control (CPCB). The control circuit 102 and the power management circuit 103 can be connected via circuit board traces on the first circuit board. The first circuit board is also electrically connected to the display panel 101, and the control circuit 102 and the power management circuit 103 can also be connected to the display panel 101 via circuit board traces on the first circuit board.

[0128] For example, the first circuit board may be a TCON board, the control circuit 102 may be a TCON or an MCU, and the power management circuit 103 may be a PMIC, that is, the PMIC is disposed on the TCON board. The TCON or MCU may include an IIC module, which communicates with the PMIC via an IIC bus.

[0129] Optionally, the display device further comprises: a second circuit board for data transmission, a data transmission cable, and a source driving circuit provided on the chip-on-film package;

[0130] The first circuit board is electrically connected to the second circuit board via a data transmission cable; the second circuit board is electrically connected to the display panel 101 via a chip-on-film package;

[0131] The display panel 101 further includes a source signal line; the source driving circuit is electrically connected to the source signal line.

[0132] In some embodiments, the display device further includes a source driving circuit, which is disposed on a chip on flex (or chip on film, COF), and the COF is electrically connected to the display panel 101. The source driving circuit is electrically connected to the source signal line on the display panel 101 through the COF, and can send a source driving signal to the source signal line.

[0133] In some embodiments, a second circuit board (XPCB) and a data transmission cable for data transmission may be provided between the first circuit board and the COF. For example, the data transmission cable may be a flexible flat cable (FFC) or a flexible printed circuit (FPC). The first circuit board is electrically connected to the second circuit board via the data transmission cable, and the second circuit board is electrically connected to the display panel 101 via the COF. The control circuit 102 and the power management circuit 103 on the first circuit board may be connected to the COF via circuit board traces on the first circuit board, the data transmission cable, and circuit board traces on the second circuit board, and then electrically connected to the traces in the non-display area of ​​the display panel 101 via the COF.

[0134] like Figure 6 As shown, the display device includes a display panel 101 and multiple source driver circuits, each of which is disposed on a COF. The COF is electrically connected to the display panel 101 and a second circuit board (XPCB). There are two XPCBs, each electrically connected to a first circuit board (CPCB) via an FFC. The CPCB is provided with a control circuit 102 (MCU), a power management circuit 103 (PMIC), and a driver circuit (L / S IC). The MCU includes an analog-to-digital conversion module (ADC), a temperature control module (ALGO), and a communication module (IIC). The MCU and PMIC are connected via an IIC bus. ALGO refers to an algorithm module that adjusts the VGH voltage based on the temperature of the PLG trace location. The PMIC transmits the VGH voltage to the L / S IC, which outputs a gate driver circuit signal based on the VGH voltage. The gate driver circuit signal is transmitted to the display panel 101 via the FFC, XPCB, and COF.

[0135] like Figure 6 As shown, there is a PLG wiring position on both sides of the edge of the display panel 101. In this embodiment, the PLG wiring position is used as the first wiring area, and a temperature detection component 1011 is set to monitor the temperature of the PLG wiring position in real time. The temperature detection component 1011 includes a thin film transistor (TFT), such as Figure 6 As shown, TFT (D1) and TFT (D2) are respectively provided at the two PLG routing locations. The gate and drain electrodes of D1 and D2 are short-circuited and electrically connected to the common electrode line. D1 and D2 operate as diodes and can receive the common electrode voltage (VCOM). The load components each include a first resistor, namely R1 and R2. The voltage at the intermediate node between the temperature detection component 1011 and the load component is VD1 and VD2, respectively. VD1 and VD2 can be sent to the control circuit 102 as detection voltage signals.

[0136] When the circuit is stable, the voltage drop across D1 is VCOM-VD1, and the voltage drop across D2 is VCOM-VD2. VD1 and VD2 can be brought back to the MCU on the TCON board through COF, XPCB, and FFC. The MCU can amplify and perform analog-to-digital conversion on the two detection voltage signals VD1 and VD2, converting the weak detection voltage signals into a first digital signal. Based on the TFT temperature characteristic curve stored in the MCU, the temperature value of the current PLG trace position is determined, and then based on the preset PLG temperature-VGH voltage relationship, as shown in the figure. Figure 5 T shown PLGThe MCU sends a first control signal to the PMIC via the IIC bus to change the VGH voltage in real time. By reducing the VGH voltage, the amplitude of the gate drive circuit signal is controlled, thereby reducing the thermal effect of the PLG wiring position and lowering the temperature of the display panel 101.

[0137] In a specific embodiment, in different display devices, the required VGH voltage reduction for each 1°C decrease in temperature at the PLG trace location is related to parameters such as the film thickness / line width of the panel metal trace. For example, for each 1°C increase in temperature at the PLG trace location, the forward voltage drop of the PN junction of each TFT in the temperature-sensing transistor assembly decreases by 3mV. The MCU can compare the VD1 / VD2 voltage changes to obtain the current temperature change at the PLG trace location. For example, the temperature values ​​corresponding to VD1 and VD2 can be averaged to obtain the final temperature detection result. The control circuit 102 can compare the current temperature value at the PLG trace location with the panel temperature threshold. If the display panel 101 requires a 2°C decrease, the control circuit 102 can send a first control signal to the power management circuit 103. Through the first control power management circuit 103, the VGH voltage is reduced by approximately 1.5V, thereby reducing the temperature at the PLG trace location. This can achieve flexible control of the PLG temperature without affecting the image quality of the display panel 101, thereby improving the overheating of the display panel 101. In practical applications, the temperature-sensing transistor structure and lead path can be set to the PLG routing position and PCB board at the display device mask or peripheral drive circuit stage, without adding additional costs and with strong versatility.

[0138] like Figure 7 As shown, an embodiment of the present application provides a display driving method, which is applied to the display device as described in the above embodiment. The display driving method includes:

[0139] Step S1, the temperature detection component 1011 detects the temperature of the target wiring area and sends a detection voltage signal to the control circuit 102;

[0140] Step S2, the control circuit 102 obtains a temperature detection result according to the detection voltage signal, generates a first control signal according to the temperature detection result, and sends the first control signal to the power management circuit 103;

[0141] In step S3 , the power management circuit 103 reduces the amplitude of the gate driving circuit signal sent to the display panel 101 in response to the first control signal.

[0142] Optionally, step S2 may include the following sub-steps:

[0143] Sub-step A1: the analog-to-digital conversion module performs analog-to-digital conversion on the detection voltage signal and sends the obtained first digital signal to the temperature control module;

[0144] In sub-step A2, the temperature control module obtains a temperature detection result based on the first digital signal and a preset temperature-voltage control relationship, and generates a first control signal when the temperature detection result indicates that the current temperature of the target routing area is greater than the panel temperature threshold, and sends the first control signal to the power management circuit 103.

[0145] Optionally, step S1 may include the following sub-steps:

[0146] In sub-step B1, the temperature detection component 1011 uses the transistor voltage drop between the first terminal and the second terminal as a detection voltage signal and sends the detection voltage signal to the control circuit 102; wherein the transistor voltage drop is generated based on the common electrode voltage transmitted by the common electrode line.

[0147] For a specific implementation of a display driving method provided in an embodiment of the present application, reference may be made to the specific description in the aforementioned embodiment of the display device.

[0148] A display driving method provided in an embodiment of the present application detects the temperature of a target wiring area through a temperature detection component 1011, and sends a detection voltage signal to a control circuit 102. The control circuit 102 can obtain a temperature detection result based on the detection voltage signal. The target wiring area is a wiring area in the non-display area of ​​the display panel 101 that is close to the binding area. The temperature detection component 1011 can accurately detect the temperature of the target wiring area, thereby monitoring the heating phenomenon of the target wiring area in real time. Since the control circuit 102 generates a first control signal based on the temperature detection result and sends the first control signal to the power management circuit 103, the power management circuit 103 is controlled to reduce the amplitude of the gate drive circuit signal sent to the display panel 101. In this way, the thermal effect generated by the signal during transmission in the target wiring area can be reduced, thereby reducing the temperature of the target wiring area, and improving the overheating phenomenon of the display panel 101.

[0149] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0150] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0151] Although preferred embodiments of the present invention have been described, those skilled in the art may make additional changes and modifications to these embodiments once they become aware of the basic inventive concepts. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the embodiments of the present invention.

[0152] Finally, it should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or terminal device that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or terminal device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of additional identical elements in the process, method, article, or terminal device that includes the element.

[0153] The above is a detailed introduction to a display device and a display driving method provided by the present application. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method of the present application and its core idea. At the same time, for those skilled in the art, according to the ideas of the present application, there may be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A display device, characterized in that: The display device includes: a display panel, a control circuit and a power management circuit; the display panel includes at least one temperature detection component; The temperature detection component is disposed in a target wiring area, which is a wiring area in a non-display area of ​​the display panel close to a binding area; the temperature detection component is electrically connected to the control circuit; the temperature detection component is configured to detect a temperature in the target wiring area and send a detection voltage signal to the control circuit; The control circuit is also electrically connected to the power management circuit; the control circuit is configured to obtain a temperature detection result based on the detection voltage signal, and generate a first control signal when the temperature detection result indicates that the temperature of the target wiring area is greater than a preset temperature threshold, and send the first control signal to the power management circuit; The display device also includes a gate drive circuit, which is arranged on the display panel; the power management circuit is electrically connected to the gate drive circuit through a drive signal line, and the drive signal line passes through the target routing area; the power management circuit is used to reduce the amplitude of the gate drive circuit signal sent to the drive signal line in response to the first control signal.

2. The display device according to claim 1, wherein The temperature detection component includes N first transistors connected in series; the control electrodes of the N first transistors are electrically connected to each other; wherein N is a positive integer and N is greater than 1; The control electrode of the first transistor is electrically connected to the first electrode and serves as the first end of the temperature detection component for receiving a constant current; The first electrode of the i-th first transistor is electrically connected to the second electrode of the (i-1)-th first transistor; wherein i is greater than 1 and i is less than or equal to N, and i is a positive integer; The second electrode of the Nth first transistor serves as the second end of the temperature detection component, and is used to connect to the control circuit.

3. The display device according to claim 1, wherein The temperature detection component includes a first transistor for receiving a constant current; The control electrode of the first transistor is electrically connected to the first electrode, serving as the first end of the temperature detection component; The second electrode of the first transistor serves as the second end of the temperature detection component and is used to connect to the control circuit.

4. The display device according to claim 2 or 3, characterized in that The display panel further includes a load component and a common electrode line; The first end of the temperature detection component is electrically connected to the common electrode line, and is used to receive the common electrode voltage transmitted by the common electrode line; The first end of the load component is electrically connected to the second end of the temperature detection component, and the second end of the load component is grounded, and is configured to generate the constant current according to the common electrode voltage.

5. The display device according to claim 4, wherein: The load component includes a first resistor or a second transistor; One end of the first resistor serves as the first end of the load component, and the other end serves as the second end of the load component; Alternatively, the control electrode of the second transistor is electrically connected to the first electrode, serving as the first end of the load component, and the second electrode serves as the second end of the load component.

6. The display device according to claim 1, wherein The display panel includes a power signal line and a gate signal line; The power management circuit is electrically connected to the gate drive circuit through the power signal line; the gate drive circuit is electrically connected to the gate signal line; and the power signal line passes through the target routing area.

7. The display device according to claim 6, wherein: The target routing area includes at least one first routing area; the first routing area is located at a panel corner close to the binding area in the non-display area of ​​the display panel; The power signal line passes through the first routing area; the first routing area is provided with at least one temperature detection component.

8. The display device according to claim 1, wherein The control circuit includes an analog-to-digital conversion module and a temperature control module; The analog-to-digital conversion module is electrically connected to the temperature detection component and the temperature control module respectively, and is used to perform analog-to-digital conversion on the detection voltage signal and send the obtained first digital signal to the temperature control module; The temperature control module is also electrically connected to the power management circuit, and is used to obtain the temperature detection result based on the first digital signal and a preset temperature-voltage control relationship, and generate the first control signal when the temperature detection result indicates that the current temperature of the target routing area is greater than the panel temperature threshold, and send the first control signal to the power management circuit.

9. The display device according to claim 8, wherein The control circuit further includes a communication module; The temperature control module is electrically connected to the power management circuit through the communication module; The communication module is used to send the first control signal sent by the temperature control module to the power management circuit.

10. The display device according to claim 1, wherein The display device further includes: a first circuit board for driving control; the first circuit board is electrically connected to the display panel; The control circuit and the power management circuit are arranged on the first circuit board.

11. The display device according to claim 10, wherein: The display device further includes: a second circuit board for data transmission, a data transmission cable, and a source driving circuit provided on a chip-on-film package; The first circuit board is electrically connected to the second circuit board via the data transmission cable; the second circuit board is electrically connected to the display panel via the chip-on-film package; The display panel further includes a source signal line; the source driving circuit is electrically connected to the source signal line.

12. A display driving method, characterized in that: Applied to the display device according to any one of claims 1 to 11, the display driving method comprises: The temperature detection component detects the temperature of the target wiring area and sends a detection voltage signal to the control circuit; The control circuit obtains a temperature detection result according to the detection voltage signal, generates a first control signal when the temperature detection result indicates that the temperature of the target wiring area is greater than a preset temperature threshold, and sends the first control signal to the power management circuit; The power management circuit reduces the amplitude of the gate driving circuit signal sent to the driving signal line in response to the first control signal.

13. The display driving method according to claim 12, wherein: The control circuit obtains a temperature detection result according to the detection voltage signal, generates a first control signal according to the temperature detection result, and sends the first control signal to the power management circuit, including: The analog-to-digital conversion module performs analog-to-digital conversion on the detection voltage signal and sends the obtained first digital signal to the temperature control module; The temperature control module obtains the temperature detection result based on the first digital signal and a preset temperature-voltage control relationship, and generates the first control signal when the temperature detection result indicates that the current temperature of the target routing area is greater than the panel temperature threshold, and sends the first control signal to the power management circuit.

14. The display driving method according to claim 12 or 13, wherein: The temperature detection component detects the temperature of the target wiring area and sends a detection voltage signal to the control circuit, including: The temperature detection component uses the transistor voltage drop between the first end and the second end as the detection voltage signal and sends the detection voltage signal to the control circuit; wherein the transistor voltage drop is generated based on the common electrode voltage transmitted by the common electrode line.

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