Adjusting circuit of display panel, control method and display device

Abstract

The invention relates to an adjusting circuit of a display panel, a control method and a display device.The adjusting circuit of the display panel comprises a first temperature sensor, a first chip on film, a driving chip, a voltage selection module and a screen driving module.The first temperature sensor is used for being connected with array glass; the first chip-on-film is connected with the array glass, the first chip-on-film is opposite to the first temperature sensor, the first temperature sensor is used for detecting the temperature of the first chip-on-film, the driving chip is connected with the first chip-on-film, and the voltage selection module is electrically connected with the first temperature sensor. The voltage selection module is used for selecting a first voltage according to the temperature of the first chip on film, the screen driving module is electrically connected with the voltage selection module and the driving chip, the screen driving module is used for transmitting a control code to the driving chip according to the first voltage, and the driving chip is used for outputting an adjustment value according to the control code. And the problem of display picture abnormity in a high-temperature environment is improved.

Description

Technical Field

[0001] The present invention relates to the field of display technology, and in particular to a regulating circuit, a control method and a display device of a display panel. Background Art

[0002] Liquid crystal displays (LCDs) are widely popular, but fluctuations in their operating temperature can degrade data signal quality. When the signal deteriorates to the point where it no longer meets the driver chip's specifications, signal lock can occur, leading to display anomalies. Existing techniques typically use an eye diagram code with a margin for fluctuation to adjust the display panel at room temperature. However, this eye diagram code is ineffective in high-temperature environments, resulting in display anomalies. Summary of the Invention

[0003] The object of the present invention is to provide a display panel adjustment circuit, a control method and a display device, which improve the problem of abnormal display images in a high-temperature environment.

[0004] To achieve the purpose of the present invention, the present invention provides the following technical solutions:

[0005] In a first aspect, the present invention provides a regulation circuit for a display panel, the regulation circuit comprising: a first temperature sensor for connecting to an array glass; a first chip-on-chip film for connecting to the array glass, the first chip-on-chip film being opposite to the first temperature sensor, the first temperature sensor being used to detect the temperature of the first chip-on-chip film; a driving chip for connecting to the first chip-on-chip film; a voltage selection module for electrically connecting to the first temperature sensor, the voltage selection module being used to select a first voltage according to the temperature of the first chip-on-chip film; a screen driving module for electrically connecting to the voltage selection module and the driving chip, the screen driving module being used to transmit a control code to the driving chip according to the first voltage; wherein the driving chip is used to output an adjustment value according to the control code.

[0006] In one embodiment, the voltage selection module includes a first submodule, the first submodule includes the positive pole of the first power supply, a first branch, a second branch, a third branch, a fourth branch and a fifth branch, one end of the first branch is connected to the positive pole of the first power supply, one end of the second branch, one end of the third branch, one end of the fourth branch and one end of the fifth branch, the other end of the first branch is connected to the screen driving module, the other end of the second branch is connected to the screen driving module, the other end of the third branch is connected to the screen driving module, the other end of the fourth branch is connected to the screen driving module, and the other end of the fifth branch is connected to the screen driving module; according to the temperature of the first flip chip film, the voltage selection module is also used to control one of the first branch, the second branch, the third branch, the fourth branch and the fifth branch to be turned on, and the other four branches to be disconnected.

[0007] By setting the voltage selection module to include a first branch, a second branch, a third branch, a fourth branch and a fifth branch, each branch is connected to the screen driving module. According to the temperature of the first cover chip film, the module can selectively turn on one of the branches and disconnect the other branches, so that the voltage selection module can dynamically adjust the power supply path according to temperature changes and flexibly adjust the power supply mode, thereby optimizing the working state of the screen driving module. This flexibility enables the screen driving module to obtain the best working state under different temperature environments, so that each branch corresponds to a different voltage level or signal characteristic. The branch is dynamically switched through temperature feedback, and the driving voltage can be adjusted to the optimal value, thereby achieving the best driving voltage matching of the display panel at different temperatures, improving the picture response time, and reducing the probability of high-temperature overdrive or low-temperature drag, thereby reducing the probability of picture abnormality.

[0008] In one embodiment, the first branch includes a first transistor, the second branch includes a second transistor, the third branch includes a third transistor, the fourth branch includes a fourth transistor, and the fifth branch includes a fifth transistor. The source of the first transistor is connected to the positive electrode of the first power supply, the source of the second transistor, the source of the third transistor, the source of the fourth transistor, and the source of the fifth transistor. The gate of the first transistor is connected to the first temperature sensor, the gate of the second transistor, the gate of the third transistor, the gate of the fourth transistor, and the gate of the fifth transistor. The drain of the first transistor is connected to the screen drive module, the drain of the second transistor is connected to the screen drive module, the drain of the third transistor is connected to the screen drive module, the drain of the fourth transistor is connected to the screen drive module, and the drain of the fifth transistor is connected to the screen drive module.

[0009] By setting the five branches in the voltage selection module to each include a transistor, and the gates of these transistors are connected to the first temperature sensor, when the temperature of the first flip chip film changes, the first temperature sensor will detect the temperature change and output a corresponding control signal. This control signal will act on the gates of the five transistors to control the conduction and disconnection of the corresponding branches. Since the screen drive module has different requirements for the power supply voltage at different temperatures, by selectively turning on a branch, the screen drive module can be provided with a power supply voltage that is suitable for the current temperature, thereby realizing the temperature compensation function and ensuring that the screen drive module can work stably and efficiently in different temperature environments. The circuit structure can automatically adjust the power supply branch according to temperature changes, and provide the screen drive module with a suitable power supply voltage, thereby improving the accuracy and stability of temperature compensation.

[0010] In one implementation, different threshold voltages are set for the first transistor, the second transistor, the third transistor, the fourth transistor, and the fifth transistor.

[0011] By setting threshold voltages of different sizes for the first transistor, the second transistor, the third transistor, the fourth transistor, and the fifth transistor, the conduction conditions of the first branch, the second branch, the third branch, the fourth branch, and the fifth branch are determined by the threshold voltages of the corresponding transistors. The feedback signal of the first temperature sensor controls the gate voltage of each transistor so that only the branches that meet the threshold conditions are turned on. Through the gradient design of the threshold voltage, dynamic adaptation between temperature and voltage is achieved, accurately matching the requirements of different working conditions, and improving the stability and accuracy of the regulation.

[0012] In one embodiment, the first temperature sensor includes a plurality of second temperature sensors, and the plurality of second temperature sensors are spaced apart along a first direction on the array glass.

[0013] A temperature monitoring network is formed by setting multiple second temperature sensors at intervals along the first direction of the array glass. Assuming that the temperature of the array glass presents a gradient change along the first direction due to backlight, driving current distribution or environmental factors during display operation, each second temperature sensor independently collects the temperature value of its area. The system determines whether there is a significant temperature gradient by comparing the temperature differences of adjacent sensors. Based on the temperature gradient data, real-time monitoring and compensation of local temperature anomalies of the display panel are achieved, avoiding brightness or chromaticity deviations caused by uneven temperature distribution, improving the consistency of full-screen display, and reducing the probability of display abnormalities.

[0014] In one embodiment, a plurality of the second temperature sensors are arranged on the array glass at equal intervals along the first direction.

[0015] By arranging multiple second temperature sensors at equal intervals along the first direction on the array glass, the multiple second temperature sensors can evenly cover the entire surface of the array glass, ensuring that the temperature of each area can be accurately monitored. This evenly distributed monitoring method can avoid temperature blind spots caused by uneven distribution of sensors, thereby improving the accuracy of temperature monitoring.

[0016] In one embodiment, the first chip-on-film includes a plurality of second chip-on-films, which are spaced apart along the first direction. Each second chip-on-film is connected to a second temperature sensor, which is used to detect the temperature of each second chip-on-film.

[0017] By arranging multiple second chip-on-chip films at intervals along the first direction, each second chip-on-chip film is connected to a second temperature sensor, and the second temperature sensor is used to detect the temperature of each second chip-on-chip film, ensuring accurate monitoring of the temperature distribution of the entire display panel, each second temperature sensor works independently, and the output signal can be processed separately to achieve accurate control of the temperature of different areas.

[0018] In one embodiment, the second chip-on-chip film includes a plurality of third chip-on-chip films, which are arranged at intervals along the first direction; the driver chip includes a plurality of sub-driver chips, which are arranged at intervals, and each sub-driver chip is connected to one of the third chip-on-chip films.

[0019] By connecting each sub-driver chip to a third cover chip film and spacing the third cover chip film and the sub-driver chip, more precise zoning control can be achieved. Each sub-driver chip is only responsible for one third cover chip film, and independent temperature monitoring and drive signal adjustment are performed on each area, thereby achieving precise control of different areas of the display panel. In the case of temperature changes, the drive conditions of each area can be dynamically adjusted to optimize the display effect and protect the display panel, reducing the probability of abnormal display images in high-temperature environments.

[0020] In a second aspect, the present application provides a control method, which is applied to a regulation circuit of a display panel, the regulation circuit including a first temperature sensor, a first chip-on-film, a driver chip, a voltage selection module, and a screen driver module, wherein the first temperature sensor is used to be connected to the array glass, the first chip-on-film is connected to the array glass, the first chip-on-film is opposite to the first temperature sensor, the driver chip is connected to the first chip-on-film, the voltage selection module is electrically connected to the first temperature sensor, and the screen driver module is electrically connected to the voltage selection module and the driver chip, and the control method includes:

[0021] detecting the temperature of the first flip chip film by using the first temperature sensor;

[0022] selecting a first voltage by the voltage selection module according to the temperature of the first flip chip film;

[0023] outputting a control code to the driver chip through the screen driver module according to the first voltage;

[0024] According to the control code, the adjustment value is outputted through the driving chip.

[0025] In a third aspect, the present application provides a display device comprising a display panel and a regulating circuit, wherein the display panel is electrically connected to the regulating circuit, and the regulating circuit is used to execute the control method as described in the second aspect.

[0026] By setting up a regulation circuit for a display panel, the regulation circuit includes a first temperature sensor, a first chip-on-chip film, a driving chip, a voltage selection module and a screen driving module, the first temperature sensor is used to be connected to the array glass, the first chip-on-chip film is connected to the array glass, the first chip-on-chip film is opposite to the first temperature sensor, the first temperature sensor is used to detect the temperature of the first chip-on-chip film, the driving chip is connected to the first chip-on-chip film, the voltage selection module is electrically connected to the first temperature sensor, the voltage selection module is used to select a first voltage according to the temperature of the first chip-on-chip film, the screen driving module is electrically connected to the voltage selection module and the driving chip, the screen driving module is used to transmit a control code to the driving chip according to the first voltage, and the driving chip is used to output an adjustment value according to the control code, thereby improving the problem of abnormal display screen in a high temperature environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0028] Figure 1 This is a diagram of an application scenario of a regulating circuit for a display panel according to an embodiment;

[0029] Figure 2 is a schematic structural diagram of an adjustment circuit of a display panel according to an embodiment;

[0030] Figure 3 is a schematic structural diagram of a voltage selection module according to an embodiment;

[0031] Figure 4 is a flow chart of a control method according to an embodiment;

[0032] Figure 5 This is a system operation test diagram of an embodiment.

[0033] Description of reference numerals:

[0034] 101-user, 102-electronic device, 103-server, 201-first temperature sensor, 202-first chip-on-film, 2021-third chip-on-film, 203-driver chip, 2031-sub-driver chip, 204-screen driver module, 205-voltage selection module, 2051-first transistor, 2052-second transistor, 2053-third transistor, 2054-fourth transistor, 2055-fifth transistor, 2056-first power supply. DETAILED DESCRIPTION

[0035] To help those skilled in the art better understand the present invention, the following clearly and completely describes the technical solutions of the present invention in conjunction with the accompanying drawings. Obviously, the examples described are only some examples of the present invention, not all of them. All other examples derived by those skilled in the art based on the examples in the present invention without creative effort are also within the scope of protection of the present invention.

[0036] The terms "1" and "2" in this application are used to distinguish different objects, not to describe a specific order. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units that are not listed, or may optionally include other steps or units that are inherent to the process, method, product, or device.

[0037] References to "embodiments" herein mean that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one example of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0038] See Figure 1 , Figure 1 This is an application scenario diagram of a display panel adjustment circuit provided in this application. Figure 1 As shown, the application scenario diagram includes a user 101, an electronic device 102 and a server 103. It should be noted that the electronic device 102 includes a display panel, which can display video data or picture data. Figure 1The number of devices, the form of each device, and the number of users in the system shown are for example purposes only and do not constitute a limitation on the present application. A user 101 can use multiple electronic devices 102, a server 103 can be connected to multiple electronic devices 102, the server 103 transmits data to the electronic device 102, and the electronic device 102 can display the data on a display.

[0039] The user 101 is the user who actually operates the electronic device 102 to control the electronic device 102 to perform corresponding operations. The electronic device 102 may be Figure 1 The laptop computer shown may also be a personal computer (PC), an all-in-one computer, a handheld computer, a tablet computer (pad), a desktop computer, a smartphone, a smart TV player, a portable device, etc. The operating system of a PC-side electronic device, such as an all-in-one computer, may include but is not limited to Linux, Unix, Windows series systems (such as Windows XP, Windows 7, etc.). The operating system of a mobile-side electronic device, such as a smartphone, may include but is not limited to Android, iOS (Apple's mobile phone operating system), Windows, etc.

[0040] See Figure 2 , Figure 2 This is a schematic diagram of the structure of a display panel adjustment circuit provided by this application. Figure 2 As shown, the structural diagram includes a first temperature sensor 201, a first chip-on-film 202, a driver chip 203, a voltage selection module, and a screen driver module 204. The first temperature sensor is connected to the array glass, the first chip-on-film is connected to the array glass, the first chip-on-film is opposite to the first temperature sensor, the first temperature sensor is used to detect the temperature of the first chip-on-film, the driver chip is connected to the first chip-on-film, the voltage selection module is electrically connected to the first temperature sensor, the voltage selection module is used to select a first voltage based on the temperature of the first chip-on-film, the screen driver module is electrically connected to the voltage selection module and the driver chip, the screen driver module is used to transmit a control code to the driver chip based on the first voltage, and the driver chip is used to output an adjustment value based on the control code.

[0041] In one embodiment, Figure 3 This is a schematic diagram of the voltage selection module. Figure 2The voltage selection module 205 includes a first submodule, which includes a positive electrode of a first power supply, a first branch, a second branch, a third branch, a fourth branch, and a fifth branch. One end of the first branch is connected to the positive electrode of the first power supply, one end of the second branch, one end of the third branch, one end of the fourth branch, and one end of the fifth branch. The other end of the first branch is connected to the screen driver module, the other end of the second branch is connected to the screen driver module, the other end of the third branch is connected to the screen driver module, the other end of the fourth branch is connected to the screen driver module, and the other end of the fifth branch is connected to the screen driver module.

[0042] According to the temperature of the first flip chip film, the voltage selection module 205 is further used to control one of the first branch, the second branch, the third branch, the fourth branch and the fifth branch to be turned on and the other four branches to be turned off.

[0043] Optionally, one end of each branch is connected to the positive pole of the first power supply, and the other end is connected to the screen driving module. According to the temperature of the first flip chip film, the voltage selection module 205 controls one of the branches to be turned on and the other four branches to be disconnected. This design allows the power supply path of the screen driving module to be dynamically adjusted according to the temperature conditions, thereby adjusting the display parameters of the display panel and avoiding abnormal display of the display panel in a high temperature environment.

[0044] Optionally, the voltage selection module 205 detects the temperature of the first flip chip film through a first temperature sensor, and selectively turns on one of the branches according to the temperature signal. For example, under low temperature conditions, the first branch can be turned on, and under high temperature conditions, the fifth branch can be turned on, thereby protecting the display panel from overheating.

[0045] Optionally, when the display panel operates at a first temperature, the first temperature sensor outputs a first level signal to turn on the first transistor; when the display panel operates at a second temperature, the first temperature sensor outputs a second level signal to turn on the fifth transistor.

[0046] Alternatively, the conduction of the five branches can be controlled by threshold comparison results. The signal output by the first temperature sensor is compared with multiple preset thresholds, and corresponding branches are selectively conducted based on the comparison results. For example, the first branch is conducted when the temperature is below the first threshold, the second branch is conducted when the temperature is between the first and second thresholds, and so on.

[0047] Alternatively, the conduction of the five branches can be controlled by a linear output signal, where the linear signal output by the first temperature sensor directly controls the conduction state of the transistor in each branch. For example, when the temperature increases by 10°C, the next branch is selectively turned on.

[0048] Optionally, the conduction of the five branches can be controlled by a calibration curve. After the signal output by the first temperature sensor is processed by the calibration curve, the control logic unit selectively conducts the corresponding branch based on the processed signal. For example, the calibration curve can compensate for the nonlinear characteristics of the first temperature sensor and improve control accuracy.

[0049] Alternatively, the conduction of the five branches can be controlled by an average value. After the signal output by the first temperature sensor is averaged, the control logic unit selectively conducts the corresponding branch based on the average value. For example, the average value can smooth temperature changes and avoid frequent switching of branches.

[0050] Optionally, the conduction of the five branches can be controlled by peak detection. After the signal output by the first temperature sensor is peak-detected, the control logic unit selectively conducts the corresponding branches based on the peak value. For example, peak detection can detect extreme temperature values and adjust the power supply path in a timely manner.

[0051] Optionally, the conduction of the five branches can be controlled by valley detection. After the signal output by the first temperature sensor undergoes valley detection, the control logic unit selectively conducts the corresponding branches based on the valley value. For example, valley detection can capture the lowest temperature value and optimize the power supply strategy.

[0052] By setting the voltage selection module 205 to include a first branch, a second branch, a third branch, a fourth branch and a fifth branch, each branch is connected to the screen driving module. According to the temperature of the first flip chip film, the module can selectively turn on one of the branches and disconnect the other branches, so that the voltage selection module 205 can dynamically adjust the power supply path according to temperature changes and flexibly adjust the power supply mode, thereby optimizing the working state of the screen driving module. This flexibility enables the screen driving module to obtain the best working state under different temperature environments, so that each branch corresponds to a different voltage level or signal characteristic. By dynamically switching branches through temperature feedback, the driving voltage can be adjusted to the optimal value, thereby achieving the best driving voltage matching of the display panel at different temperatures, improving the picture response time, contrast and color accuracy, and reducing the probability of high-temperature overdrive or low-temperature smearing.

[0053] In one embodiment, see Figure 2 and Figure 3The first branch includes a first transistor 2051, the second branch includes a second transistor 2052, the third branch includes a third transistor 2053, the fourth branch includes a fourth transistor 2054, and the fifth branch includes a fifth transistor 2055. The source of the first transistor 2051 is connected to the positive electrode of the first power supply 2056, the source of the second transistor 2052, the source of the third transistor 2053, the source of the fourth transistor 2054 and the source of the fifth transistor 2055. The gate of the first transistor 2051 is connected to the first temperature sensor, the gate of the second transistor 2052, the gate of the third transistor 2053, the gate of the fourth transistor 2054 and the gate of the fifth transistor 2055. The drain of the first transistor 2051 is connected to the screen driving module, the drain of the second transistor 2052 is connected to the screen driving module, the drain of the third transistor 2053 is connected to the screen driving module, the drain of the fourth transistor 2054 is connected to the screen driving module, and the drain of the fifth transistor 2055 is connected to the screen driving module.

[0054] Optionally, the first transistor 2051, the second transistor 2052, the third transistor 2053, the fourth transistor 2054, and the fifth transistor 2055 can all be metal oxide semiconductor field effect transistors, and the gate voltage of the metal oxide semiconductor field effect transistor controls its conduction state. The signal output by the temperature sensor is amplified and filtered, and then directly drives the gate of the metal oxide semiconductor field effect transistor.

[0055] Optionally, the conduction of the first transistor 2051, the second transistor 2052, the third transistor 2053, the fourth transistor 2054, and the fifth transistor 2055 can be controlled by gate voltage. The signal output by the first temperature sensor is converted into an analog voltage by a digital-to-analog converter to drive the gates of the transistors. For example, the voltage output by the digital-to-analog converter varies linearly with temperature, selectively turning on the corresponding transistors.

[0056] Optionally, the conduction of the first transistor 2051, the second transistor 2052, the third transistor 2053, the fourth transistor 2054, and the fifth transistor 2055 can be directly controlled by the output signal of the first temperature sensor. The regulation circuit also includes a buffer. The signal output by the first temperature sensor directly drives the gates of the transistors after passing through the buffer. For example, the voltage output by the temperature sensor varies linearly with temperature, selectively turning on the corresponding transistors.

[0057] Optionally, the conduction of the first transistor 2051, the second transistor 2052, the third transistor 2053, the fourth transistor 2054, and the fifth transistor 2055 can be based on a threshold comparison result of a first temperature sensor. The signal output by the first temperature sensor is compared with multiple preset thresholds, and a control signal is generated based on the comparison result to drive the gate of the transistor. For example, when the temperature is below the first threshold, the first transistor 2051 is turned on; when the temperature is between the first and second thresholds, the second transistor 2052 is turned on, and so on.

[0058] Optionally, the conduction of the first transistor 2051, the second transistor 2052, the third transistor 2053, the fourth transistor 2054, and the fifth transistor 2055 can be based on the linear output of the first temperature sensor. The linear signal output by the first temperature sensor directly drives the gate of the transistor. For example, the amplitude of the linear signal varies linearly with temperature, selectively turning on the corresponding transistor.

[0059] By setting the five branches in the voltage selection module 205 to each include a transistor, and the gates of these transistors are connected to the first temperature sensor, when the temperature of the first flip chip film changes, the first temperature sensor will detect the temperature change and output a corresponding control signal. This control signal will act on the gates of the five transistors, thereby controlling the conduction and disconnection of the corresponding branches. Since the screen drive module has different requirements for the power supply voltage at different temperatures, by selectively turning on a branch, the screen drive module can be provided with a power supply voltage that is adapted to the current temperature, thereby realizing the temperature compensation function and ensuring that the screen drive module can work stably and efficiently in different temperature environments. The circuit structure can automatically adjust the power supply branch according to the temperature change, and provide the screen drive module with a suitable power supply voltage, thereby improving the accuracy and stability of temperature compensation.

[0060] In one embodiment, see Figure 2 and Figure 3 , different threshold voltages are set for the first transistor 2051, the second transistor 2052, the third transistor 2053, the fourth transistor 2054 and the fifth transistor 2055.

[0061] Optionally, different threshold voltages are set for the first transistor 2051 to the fifth transistor 2055. For example, the threshold voltage of the first transistor 2051 is a first voltage value, the threshold voltage of the second transistor 2052 is a second voltage value, and so on. The threshold voltage of each transistor is set according to the output signal of the first temperature sensor.

[0062] Alternatively, the threshold voltage can be set based on the linear output of the first temperature sensor. For example, the linear output signal of the first temperature sensor is directly used to set the threshold voltage of the transistor. For every 10°C increase in temperature, the threshold voltage decreases by 0.1V, thereby gradually reducing the drive voltage.

[0063] Optionally, the threshold voltage can be set based on a filtering result of the first temperature sensor. The regulation circuit includes a filter. For example, the signal output by the temperature sensor is filtered by the filter and then used to set the threshold voltage of the transistor. Filtering can remove noise interference and improve signal reliability.

[0064] Optionally, the threshold voltage can be set based on an average value of the first temperature sensor. For example, the signal output by the temperature sensor is averaged and used to set the threshold voltage of the transistor. The average value can smooth temperature changes and avoid frequent switching of transistors.

[0065] Optionally, the threshold voltage can be set based on peak detection of the first temperature sensor. For example, the signal output by the first temperature sensor is subjected to peak detection and used to set the threshold voltage of the transistor. Peak detection can capture extreme temperature values and optimize the threshold voltage setting. Optionally, the threshold voltage can be set based on valley detection of the first temperature sensor. For example, the signal output by the first temperature sensor is subjected to valley detection and used to set the threshold voltage of the transistor. Valley detection can capture the lowest temperature value and optimize the threshold voltage setting.

[0066] Optionally, threshold voltages that increase sequentially are set for the first transistor 2051, the second transistor 2052, the third transistor 2053, the fourth transistor 2054, and the fifth transistor 2055. For example, within a linear range, a linearly varying threshold voltage setting is selected to achieve smooth voltage regulation, where the threshold voltages of the five transistors increase linearly with temperature, ensuring a continuous regulation effect.

[0067] Optionally, the threshold voltage can be set based on a temperature calibration of the first temperature sensor. The adjustment circuit includes a non-volatile memory. For example, the first temperature sensor is calibrated before shipment, and the calibration data is stored in the non-volatile memory. During operation, the threshold voltage is adjusted based on the calibration data to ensure precise control.

[0068] By setting threshold voltages of different sizes for the first transistor 2051, the second transistor 2052, the third transistor 2053, the fourth transistor 2054 and the fifth transistor 2055, the conduction conditions of the first branch, the second branch, the third branch, the fourth branch and the fifth branch are determined by the threshold voltages of the corresponding transistors. The feedback signal of the first temperature sensor controls the gate voltage of each transistor so that only the branches that meet the threshold conditions are turned on. Through the gradient design of the threshold voltage, dynamic adaptation between temperature and voltage is achieved, accurately matching the requirements of different working conditions, and improving the stability and accuracy of the regulation.

[0069] In one embodiment, see Figure 2 The first temperature sensor includes a plurality of second temperature sensors, and the plurality of second temperature sensors are spaced apart along a first direction on the array glass.

[0070] A temperature monitoring network is formed by setting multiple second temperature sensors at intervals along the first direction of the array glass. Assuming that the temperature of the array glass presents a gradient change along the first direction due to backlight, drive current distribution or environmental factors during display operation, each second temperature sensor independently collects the temperature value of its area. The system determines whether there is a significant temperature gradient by comparing the temperature differences of adjacent sensors. Based on the temperature gradient data, real-time monitoring and compensation of local temperature anomalies of the display panel are achieved, avoiding brightness / chromaticity deviations caused by uneven temperature distribution, improving the consistency of full-screen display, and reducing the probability of display abnormalities.

[0071] Optionally, the second temperature sensor may be a thermistor, whose resistance changes with temperature. The voltage signal output by the thermistor is amplified and filtered before being used to control the voltage selection module 205. For example, when the temperature of a certain area increases, the resistance of the corresponding thermistor decreases, and the output voltage decreases, triggering the corresponding branch to conduct, thereby reducing the power supply voltage in that area.

[0072] Optionally, the second temperature sensor may be an infrared temperature sensor, which measures temperature by detecting infrared radiation emitted by an object. The output signal of the infrared temperature sensor, after analog-to-digital conversion, is used to control the voltage selection module 205. For example, when the temperature of a certain area rises, the digital signal output by the infrared sensor indicates the temperature change, triggering the corresponding branch to conduct, thereby adjusting the power supply voltage of the area.

[0073] Optionally, the second temperature sensor may be a semiconductor temperature sensor. Based on the principle that the electrical properties of semiconductor materials vary with temperature, the semiconductor temperature sensor outputs a voltage signal that is amplified and filtered before being used to control the voltage selection module 205. For example, when the temperature of a certain area increases, the voltage output by the semiconductor sensor decreases, triggering the corresponding branch to conduct, thereby adjusting the power supply voltage of that area.

[0074] Optionally, the second temperature sensor may be a capacitive temperature sensor. A capacitive temperature sensor utilizes the principle that capacitance changes with temperature. The output capacitance signal is converted into a voltage signal by a conversion circuit and used to control the voltage selection module 205. For example, when the temperature of a certain area increases, the capacitance value increases, the output voltage increases, and the corresponding branch circuit is triggered to conduct, thereby adjusting the supply voltage of the area.

[0075] Optionally, the second temperature sensor may be a resistive temperature sensor. A resistive temperature sensor utilizes the principle that resistance changes with temperature. The output resistance signal is converted into a voltage signal by a conversion circuit and used to control the voltage selection module 205. For example, when the temperature of a certain area increases, the resistance value decreases, the output voltage decreases, and the corresponding branch circuit is triggered to conduct, thereby adjusting the supply voltage of the area.

[0076] Optionally, the second temperature sensor may be an inductive temperature sensor. The inductive temperature sensor utilizes the principle that inductance varies with temperature. The output inductance signal is converted into a voltage signal by a conversion circuit and used to control the voltage selection module 205. For example, when the temperature of a certain area increases, the inductance changes, the output voltage changes, and the corresponding branch circuit is triggered to conduct, thereby adjusting the supply voltage of the area.

[0077] Optionally, the second temperature sensor can be a graphene temperature sensor. The graphene temperature sensor utilizes the principle that the electrical properties of graphene change with temperature. The output voltage signal is amplified and filtered before being used to control the voltage selection module 205. For example, when the temperature of a certain area rises, the voltage output by the graphene sensor changes, triggering the corresponding branch to conduct, thereby adjusting the supply voltage of that area.

[0078] Optionally, the second temperature sensor may be a carbon nanotube temperature sensor. The carbon nanotube temperature sensor utilizes the principle that the electrical properties of carbon nanotubes change with temperature. The output voltage signal is amplified and filtered before being used to control the voltage selection module 205. For example, when the temperature of a certain area rises, the voltage output by the carbon nanotube sensor changes, triggering the corresponding branch circuit to conduct, thereby adjusting the power supply voltage for that area.

[0079] By arranging multiple second chip-on-chip films at intervals along the first direction, each second chip-on-chip film is connected to a second temperature sensor, and the second temperature sensor is used to detect the temperature of each second chip-on-chip film, ensuring accurate monitoring of the temperature distribution of the entire display panel, each second temperature sensor works independently, and the output signal can be processed separately to achieve accurate control of the temperature of different areas.

[0080] In one embodiment, see Figure 2 , a plurality of second temperature sensors are arranged on the array glass at equal intervals along the first direction.

[0081] Optionally, a second temperature sensor is provided every 5 mm along the first direction of the array glass.

[0082] By arranging multiple second temperature sensors at equal intervals along the first direction on the array glass, the multiple second temperature sensors can evenly cover the entire surface of the array glass, ensuring that the temperature of each area can be accurately monitored. This evenly distributed monitoring method can avoid temperature blind spots caused by uneven distribution of sensors, thereby improving the accuracy of temperature monitoring.

[0083] In one embodiment, see Figure 2 The first chip-on-film includes a plurality of second chip-on-films, which are spaced apart along the first direction. Each second chip-on-film is connected to a second temperature sensor, which is used to detect the temperature of each second chip-on-film.

[0084] Optionally, the first chip-on-film includes a plurality of second chip-on-films, and the plurality of second chip-on-films are arranged at equal intervals along the first direction.

[0085] Optionally, the first chip-on-film includes multiple second chip-on-films, each of which is connected to a second temperature sensor for detecting the temperature of the corresponding area. For example, a second chip-on-film may be provided every 10 mm along the first direction of the array glass, and each chip-on-film corresponds to a temperature sensor. The signal output by the temperature sensor is used to control the conduction of the corresponding branch circuit, thereby adjusting the power supply voltage of the corresponding area.

[0086] Optionally, the second chip-on-chip film can be a flexible chip-on-chip film, which is suitable for bendable or foldable display panels. Each flexible chip-on-chip film is connected to a temperature sensor, and the signal output by the temperature sensor is used to dynamically adjust the power supply voltage of the area. For example, when the display panel is bent, the temperature distribution may be uneven. By independently controlling the power supply voltage of each area, the display effect can be optimized. Optionally, the second chip-on-chip film can be a rigid chip-on-chip film, which is suitable for fixed display panels. Each rigid chip-on-chip film is connected to a temperature sensor, and the signal output by the temperature sensor is used to stabilize the power supply voltage of the area. For example, in a high temperature environment, the display panel is protected by reducing the power supply voltage.

[0087] Optionally, the second chip-on-film (COF) can be a transparent COF. Transparent COF is suitable for display panels requiring high light transmittance. Each transparent COF is connected to a temperature sensor, and the temperature sensor output signal is used to adjust the supply voltage in that area. For example, in direct sunlight, the display brightness can be enhanced by increasing the supply voltage. Optionally, the second COF can be a translucent COF or an opaque COF.

[0088] In one embodiment, see Figure 2 The second flip chip film includes multiple third flip chips, which are arranged at intervals along the first direction. The driving chip includes multiple sub-driving chips, which are arranged at intervals, and each sub-driving chip is connected to a third flip chip.

[0089] Optionally, a plurality of third chip-on-films are arranged at equal intervals along the first direction.

[0090] Optionally, each sub-driver chip is connected to a third chip-on-chip film. For example, a third chip-on-chip film is arranged every 5 mm along the first direction of the array glass. Each chip-on-chip film corresponds to a sub-driver chip. The sub-driver chip adjusts the driving signal of the area according to the signal of the second temperature sensor to optimize the display effect.

[0091] Optionally, the sub-driver chip can be an independent integrated circuit, and each sub-driver chip works independently and adjusts the driving signal according to the temperature of the corresponding third cover chip film. For example, in different areas of the display panel, the driving signal is independently adjusted according to the temperature change to ensure the display quality of each area. Optionally, the sub-driver chip can be multiple modules integrated on a driver chip, and multiple sub-driver modules are integrated on a driver chip, and each module corresponds to a third cover chip. For example, parallel processing of multiple sub-driver modules is achieved through a multi-core processor to improve control efficiency. Optionally, the sub-driver chip can be a discrete component, and the sub-driver chip of the discrete component is suitable for low-cost display panels. Each discrete component adjusts the driving signal according to the signal of the second temperature sensor. For example, in a small display panel, the use of discrete components reduces manufacturing costs.

[0092] Optionally, the sub-driver chip can be a processing chip that adjusts the drive signal through data processing. This is suitable for display panels that require complex calculations. Each processing chip performs calculations based on the data from the second temperature sensor to generate an adjusted drive signal. For example, in high-performance graphic display panels, the processing chip can achieve real-time temperature compensation. Optionally, the sub-driver chip can be a control chip that adjusts the drive signal through a control algorithm. This is suitable for display panels with automated control. Each control chip runs a control algorithm based on the signal from the temperature sensor to adjust the drive signal. For example, in industrial automation display panels, the control chip can achieve precise temperature control.

[0093] By connecting each sub-driver chip to a third cover chip film and spacing the third cover chip film and the sub-driver chip, more precise zoning control can be achieved. Each sub-driver chip is only responsible for one third cover chip film, and independent temperature monitoring and drive signal adjustment are performed on each area, thereby achieving precise control of different areas of the display panel. In the case of temperature changes, the drive conditions of each area can be dynamically adjusted to optimize the display effect and protect the display panel, reducing the probability of abnormal display images in high-temperature environments.

[0094] It should be noted that after the adjustment circuit is completed, the adjustment circuit is used to debug the adjustment value at different ambient temperatures (this temperature node can be divided according to the specific situation of the display panel. If it is found during the debugging process that three temperature nodes can meet the needs, there is no need to make more temperature nodes) to achieve the best eye diagram effect. The adjustment value is divided into: the amplitude of the eye diagram, the compensation of the driver chip is in software form (the screen driver module sends a high level to the driver chip, and the driver chip selects the adjustment value according to the high level). When the adjustment value at each temperature is debugged, the network protocol of the screen driver module is opened, and the corresponding adjustment values at different temperature nodes are stored in the flash memory of the adjustment circuit. When the system is working and the corresponding conditions are met, the screen driver module calls the corresponding adjustment value to achieve the purpose.

[0095] Please refer to Figure 4 , Figure 4 : This is a flow chart of a control method provided by an embodiment of the present application. Taking the control method applied to the regulation circuit of the display panel as an example, the regulation circuit includes a first temperature sensor, a first chip-on-film, a driver chip, a voltage selection module and a screen driver module. The first temperature sensor is used to connect to the array glass, the first chip-on-film is connected to the array glass, the first chip-on-film is opposite to the first temperature sensor, the driver chip is connected to the first chip-on-film, the voltage selection module is electrically connected to the first temperature sensor, and the screen driver module is electrically connected to the voltage selection module and the driver chip. The control method includes the following steps S401-S404, wherein:

[0096] S401: Detecting the temperature of the first flip chip film by using a first temperature sensor.

[0097] S402: Selecting a first voltage through a voltage selection module according to the temperature of the first flip chip film.

[0098] S403: Outputting a control code to the driving chip through the screen driving module according to the first voltage.

[0099] S404: Outputting an adjustment value via the driver chip according to the control code.

[0100] Please refer to Figure 5 , Figure 5 This is a system working test diagram provided by the embodiment of this application. Figure 5 As shown, the Figure 5 The method comprises steps 501 to 509, wherein:

[0101] 501: Power on.

[0102] 502: The display panel is lit up under normal working conditions at room temperature.

[0103] 503: The first temperature sensor starts working.

[0104] 504: Whether the driver chip is locked and pulls down the level signal.

[0105] 505: The first temperature sensor turns on the gate of the corresponding transistor, and the screen driving module determines whether the corresponding universal interface voltage lasts for 1 second.

[0106] 506: The screen driver module calls the corresponding control code and transmits the optimal data signal at this time to the driver chip.

[0107] 507: The screen driver module receives the conversion signal from the driver chip and confirms that the driver chip has adjusted the eye diagram.

[0108] 508: The screen driver module maintains the current control code.

[0109] 509: End.

[0110] Specifically, when the screen driver module sends a data signal to the driver chip, when the driver chip receives the new data sent by the screen driver module, the conversion signal will notify the driver chip to confirm that the driver chip has successfully received the new data. Among them, the lock is a sign for the driver chip to determine whether it has correctly received the screen driver module signal. It is usually pulled from a low level to a high level, which means that the driver chip has correctly received the data from the screen driver module. When the differential data eye diagram deteriorates due to abnormal conditions such as ambient temperature or impedance, the lock will be pulled from a high level to a low level, indicating that there is an abnormality in the communication between the screen driver module and the driver chip. When the system starts working, it will first determine whether the lock is pulled low (the eye diagram deteriorates, that is, it will be unlocked). The screen driver module will then synchronously read the ambient temperature. If the ambient temperature is too low, the lock will be pulled from a high level to a low level. The temperature is a high-level signal within 1 second (the definition of 1 second is to avoid false triggering), indicating that the temperature at this time has indeed changed compared to the current room temperature environment. At this time, the screen driver module will determine the corresponding position of the universal interface pin, and by finding this position, send the corresponding compensated data signal to the driver chip area at the corresponding position. Then, the screen driver module will continue to determine whether the driver chip lock has pulled down the level. If it has pulled up the level, the screen driver module will synchronously receive the conversion signal, indicating that the debugging has been successful. If the lock continues to pull down the level at this time, it is likely that there is an abnormality in other parts of the driver chip. The screen driver module maintains the current control code, which helps the analyzer to eliminate the screen display abnormality caused by the non-eye diagram abnormality of the driver chip, thereby improving the efficiency of the analyzer in troubleshooting.

[0111] In the description of the embodiments of the present invention, it should be noted that the orientations or positional relationships of terms such as "center", "up", "down", "left", "right", "vertical", "horizontal", "inside" and "outside" are based on the orientations or positional relationships of the accompanying drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0112] The above disclosure is only a preferred embodiment of the present invention, and certainly cannot be used to limit the scope of the rights of the present invention. Ordinary technicians in this field can understand that all or part of the processes of the above embodiment and equivalent changes made in accordance with the claims of the present invention are still within the scope of the present invention.

Claims

1. A display panel adjustment circuit, characterized in that: The regulating circuit comprises: A first temperature sensor, used for connecting to the array glass; a first chip-on-film connected to the array glass, the first chip-on-film facing the first temperature sensor, and the first temperature sensor for detecting the temperature of the first chip-on-film; A driver chip connected to the first flip chip film; a voltage selection module, electrically connected to the first temperature sensor, and configured to select a first voltage according to the temperature of the first chip-on-film; a screen driving module, electrically connected to the voltage selection module and the driving chip, and configured to transmit a control code to the driving chip according to the first voltage; The driver chip is used to output an adjustment value according to the control code.

2. The regulating circuit according to claim 1, characterized in that: The voltage selection module includes a first submodule, which includes a positive electrode of a first power supply, a first branch, a second branch, a third branch, a fourth branch, and a fifth branch. One end of the first branch is connected to the positive electrode of the first power supply, one end of the second branch, one end of the third branch, one end of the fourth branch, and one end of the fifth branch. The other end of the first branch is connected to the screen driver module, the other end of the second branch is connected to the screen driver module, the other end of the third branch is connected to the screen driver module, the other end of the fourth branch is connected to the screen driver module, and the other end of the fifth branch is connected to the screen driver module. According to the temperature of the first flip chip film, the voltage selection module is further used to control one of the first branch, the second branch, the third branch, the fourth branch and the fifth branch to be turned on and the other four branches to be turned off.

3. The regulating circuit according to claim 2, characterized in that: The first branch includes a first transistor, the second branch includes a second transistor, the third branch includes a third transistor, the fourth branch includes a fourth transistor, and the fifth branch includes a fifth transistor. The source of the first transistor is connected to the positive electrode of the first power supply, the source of the second transistor, the source of the third transistor, the source of the fourth transistor, and the source of the fifth transistor. The gate of the first transistor is connected to the first temperature sensor, the gate of the second transistor, the gate of the third transistor, the gate of the fourth transistor, and the gate of the fifth transistor. The drain of the first transistor is connected to the screen drive module, the drain of the second transistor is connected to the screen drive module, the drain of the third transistor is connected to the screen drive module, the drain of the fourth transistor is connected to the screen drive module, and the drain of the fifth transistor is connected to the screen drive module.

4. The regulating circuit according to claim 3, characterized in that: Threshold voltages of different sizes are set for the first transistor, the second transistor, the third transistor, the fourth transistor, and the fifth transistor.

5. The regulating circuit according to claim 1, wherein: The first temperature sensor includes a plurality of second temperature sensors, and the plurality of second temperature sensors are spaced apart along a first direction on the array glass.

6. The regulating circuit according to claim 5, characterized in that: A plurality of second temperature sensors are arranged on the array glass at equal intervals along the first direction.

7. The regulating circuit according to claim 5, characterized in that: The first chip-on-film includes a plurality of second chip-on-films, which are spaced apart along the first direction. Each second chip-on-film is connected to a second temperature sensor, which is used to detect the temperature of each second chip-on-film.

8. The regulating circuit according to claim 7, characterized in that: The second COF includes a plurality of third COFs, which are spaced apart along the first direction. The driver chip includes a plurality of sub-driver chips, which are spaced apart, and each sub-driver chip is connected to one of the third COFs.

9. A control method, characterized in that: The control method is applied to a regulation circuit of a display panel, the regulation circuit including a first temperature sensor, a first chip-on-film, a driver chip, a voltage selection module, and a screen driver module, the first temperature sensor being connected to the array glass, the first chip-on-film being connected to the array glass, the first chip-on-film being opposite to the first temperature sensor, the driver chip being connected to the first chip-on-film, the voltage selection module being electrically connected to the first temperature sensor, and the screen driver module being electrically connected to the voltage selection module and the driver chip, the control method comprising: detecting the temperature of the first flip chip film by using the first temperature sensor; selecting a first voltage by the voltage selection module according to the temperature of the first flip chip film; outputting a control code to the driver chip through the screen driver module according to the first voltage; According to the control code, the adjustment value is outputted through the driving chip.

10. A display device, characterized in that: The device comprises a display panel and a regulating circuit, wherein the display panel is electrically connected to the regulating circuit, and the regulating circuit is used to execute the control method according to claim 9.

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