Display device

Abstract

This application belongs to the field of display technology, specifically relating to a display device. The display device includes a display panel and a driving module. The display panel includes at least two display modules, with adjacent display modules spliced ​​together in a first direction. The driving module includes at least one detection resistor, at least one first reading module, and a controller. The detection resistor includes a first resistor and a second resistor, which are respectively disposed on the driving surfaces of two adjacent display modules. The opposing surfaces of the first and second resistors are in contact, and the first and second resistors are aligned in a second direction. The first reading module is connected to the detection resistor and is used to read the resistance value of the detection resistor. The controller is connected to the first reading module and is used to determine the degree of splicing misalignment of the display modules based on the resistance value read by the detection resistor. By detecting the degree of splicing misalignment of the display modules using the detection resistor, the accuracy and timeliness of the misalignment determination are improved.

Description

Technical Field

[0001] This application belongs to the field of display technology, and specifically relates to a display device. Background Technology

[0002] Video wall displays offer the advantages of flexible size expansion and the ability to be freely combined into various irregularly shaped large screens, enabling both integrated full-screen display and independent display of multiple signals on separate screens. Since each display module can be individually inspected and replaced, video wall displays offer outstanding overall cost-effectiveness and are widely applicable to large-screen, high-definition display scenarios such as command centers, monitoring rooms, and commercial exhibitions.

[0003] The coefficients of thermal expansion of different structures in the display module vary significantly. When the ambient temperature fluctuates (such as high temperatures in summer, prolonged operation of equipment causing heat, or sudden changes in indoor and outdoor temperature differences), the different structures of the display module will undergo asynchronous thermal expansion and contraction, resulting in relative displacement of the originally aligned modules. This not only destroys the seamless splicing effect, causing visible misalignment, gaps, or image shifts, but in severe cases, it can also exacerbate the stress on the module structure, inducing subsequent permanent damage. In existing technologies, misalignment of adjacent display modules is judged by manual visual observation, which has poor accuracy and timeliness in determining the degree of misalignment. Summary of the Invention

[0004] The purpose of this application is to provide a display device to solve the problem of poor accuracy and timeliness in judging the degree of misalignment when adjacent display modules are spliced ​​together.

[0005] To achieve the above objectives, this application provides a display device, including a display panel, wherein the display panel includes at least two display modules, adjacent display modules are spliced ​​together in a first direction, and the display device further includes a driving module, the driving module comprising:

[0006] At least one detection resistor, the detection resistor including a first resistor and a second resistor, the first resistor and the second resistor are respectively disposed on the driving surfaces of two adjacent display modules, the opposite surfaces of the first resistor and the second resistor are in contact, the first resistor and the second resistor are aligned in a second direction, the second direction being perpendicular to the first direction; At least one first reading module is connected to the detection resistor and is used to read the resistance value of the detection resistor; The controller, connected to the first reading module, is used to determine the degree of misalignment of the display module based on the resistance value read from the detection resistor.

[0007] Optionally, the first reading module includes a first voltage divider resistor and a first analog-to-digital converter. The first end of the detection resistor is connected to the power supply, and the second end of the detection resistor is connected to the ground terminal through the first node and the first voltage divider resistor. The two ends of the first analog-to-digital converter are respectively connected to the first node and the controller, and are used to convert the analog voltage value of the first node into a digital value and output it to the controller.

[0008] Optionally, the first reading module further includes a first filter capacitor, the two ends of which are respectively connected to the first node and the ground terminal. The first filter capacitor includes at least one of an electrolytic capacitor and a ceramic capacitor, and the first filter capacitor is connected in parallel with the first voltage divider resistor.

[0009] Optionally, the first filter capacitor includes the electrolytic capacitor and the ceramic capacitor, which are connected in parallel.

[0010] Optionally, the driving module further includes at least one temperature detection unit and at least one second reading module. The temperature detection unit is disposed at the splicing edge of the display module and includes a thermistor. The second reading module is connected to the temperature detection unit and is used to read the temperature measured by the temperature detection unit. The controller is connected to the second reading module and the controller compensates for the brightness of the display module based at least on the temperature measured by the temperature detection unit.

[0011] Optionally, the controller is configured to compensate the display screen of the display module according to the degree of misalignment of the splicing of the display modules, so that the brightness of the splicing area of ​​the adjacent display modules is close to the brightness of the surrounding area.

[0012] Optionally, the second reading module includes a second voltage divider resistor, a feedback resistor, a balancing resistor, an operational amplifier, and a second analog-to-digital converter. The first end of the second voltage divider resistor is connected to the power supply, and the second end of the second voltage divider resistor is connected to the ground terminal through a second node and the temperature detection unit. The non-inverting input terminal of the operational amplifier is connected to the second node, and the inverting input terminal of the operational amplifier is connected to the ground terminal through the balancing resistor. The feedback resistor is connected to the inverting input terminal and the output terminal of the operational amplifier. The two ends of the second analog-to-digital converter are respectively connected to the output terminal of the operational amplifier and the controller, and are used to convert the analog voltage value of the output terminal of the operational amplifier into a digital value and output it to the controller.

[0013] Optionally, the second reading module further includes a second filter capacitor, the two ends of which are connected to the ground terminal and the second node, respectively, and the second filter capacitor is connected in parallel with the temperature detection unit.

[0014] Optionally, the drive module further includes a selection module, which includes a first transistor and a second transistor. The first terminal of the first transistor is connected to the power supply, the second terminal of the first transistor is connected to the detection resistor, the control terminal of the first transistor is connected to the controller, the first terminal of the second transistor is connected to the power supply, the second terminal of the second transistor is connected to the temperature detection unit, and the control terminal of the second transistor is connected to the controller.

[0015] Optionally, the controller is configured to control the first transistor to turn on when the temperature measured by the temperature detection unit is greater than a preset value.

[0016] The display device disclosed in this application has the following beneficial effects: In this application, the display device includes a display panel and a driving module. The display panel includes at least two display modules, which are connected and spliced ​​together in a first direction. The driving module includes at least one detection resistor, at least one first reading module, and a controller. The detection resistor includes a first resistor and a second resistor, which are respectively disposed on the driving surfaces of two adjacent display modules. The opposing surfaces of the first resistor and the second resistor are in contact, and the first resistor and the second resistor are aligned in a second direction. The first reading module is connected to the detection resistor and is used to read the resistance value of the detection resistor. The controller is connected to the first reading module and is used to determine the degree of splicing misalignment of the display modules based on the resistance value read by the detection resistor. By detecting the degree of splicing misalignment of the display modules using the detection resistor, the accuracy and timeliness of the misalignment determination are improved.

[0017] Other features and advantages of this application will become apparent from the following detailed description, or may be learned in part from practice of this application.

[0018] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0019] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application. It is obvious that the drawings described below are merely some embodiments of this application, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort.

[0020] Figure 1 This is a schematic diagram of the display panel structure in Embodiment 1 of this application.

[0021] Figure 2 This is a schematic diagram of the drive module in Embodiment 1 of this application.

[0022] Figure 3 This is a side view of the display module in Embodiment 1 of this application.

[0023] Figure 4 This is a schematic diagram of the drive module in Embodiment 2 of this application.

[0024] Figure 5 This is a schematic diagram of the control flow of the drive module in Embodiment 2 of this application.

[0025] Explanation of reference numerals in the attached figures: 100. Display panel; 110. Display module; 111. Connection slot; 200. Drive module; 210. Detection resistor; 211. First resistor; 212. Second resistor; 220. First reading module; 221. First voltage divider resistor; 222. First analog-to-digital converter; 223. First filter capacitor; 231. Power supply; 232. Ground terminal; 240. Temperature detection unit; 250. Second reading module; 251. Second voltage divider resistor; 252. Feedback resistor; 253. Balancing resistor; 254. Operational amplifier; 255. Second analog-to-digital converter; 256. Second filter capacitor; 260. Selection module; 261. First transistor; 262. Second transistor. Detailed Implementation

[0026] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided to make this application more comprehensive and complete, and to fully convey the concept of the exemplary embodiments to those skilled in the art.

[0027] Furthermore, the described features, structures, or characteristics can be combined in any suitable manner in one or more embodiments. Numerous specific details are provided in the following description to give a thorough understanding of embodiments of this application. However, those skilled in the art will recognize that the technical solutions of this application can be practiced without one or more of the specific details, or other methods, components, apparatuses, steps, etc., can be employed. In other instances, well-known methods, apparatuses, implementations, or operations are not shown or described in detail to avoid obscuring various aspects of this application.

[0028] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments. It should be noted that the technical features involved in the various embodiments described below can be combined with each other as long as they do not conflict with each other. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present application, and should not be construed as limiting the present application.

[0029] Example 1 See Figure 1 and Figure 2 As shown, the display device includes a display panel 100 and a driving module 200. The display panel 100 includes at least two display modules 110, which are connected and spliced ​​together in a first direction. The display principle of the display modules 110 is not limited, and can be LED (light-emitting diode) direct display, liquid crystal display, or OLED (organic light-emitting diode) display, etc.

[0030] The driving module 200 includes at least one sensing resistor 210, at least one first reading module 220, and a controller. The sensing resistor 210 includes a first resistor 211 and a second resistor 212, which are respectively disposed on the driving surfaces of two adjacent display modules 110, with their opposing surfaces in contact. The first resistor 211 and the second resistor 212 are aligned in a second direction, which is perpendicular to the first direction. The first resistor 211 and the second resistor 212 are also aligned in a third direction, which is perpendicular to both the first and second directions.

[0031] The first reading module 220 is connected to the detection resistor 210 and is used to read the resistance value of the detection resistor 210. The controller is connected to the first reading module 220 and is used to determine the degree of splicing misalignment of the display module 110 based on the resistance value read from the detection resistor 210.

[0032] The resistance value of the detection resistor 210 is positively correlated with the contact area of ​​the opposing surfaces of the first resistor 211 and the second resistor 212. The resistance value of the detection resistor 210 is minimum when the first resistor 211 and the second resistor 212 are aligned. When the spliced ​​display modules 110 are misaligned due to thermal expansion or other reasons, the contact area of ​​the opposing surfaces of the first resistor 211 and the second resistor 212 decreases, and the resistance value of the detection resistor 210 increases accordingly. Based on the above analysis, it can be seen that the misalignment of adjacent display modules 110 can be detected by monitoring the resistance value of the detection resistor 210.

[0033] For example, when the first resistor 211 and the second resistor 212 are aligned, the resistance value of the detection resistor 210 is 100Ω. The controller determines that the adjacent display modules 110 are aligned based on the resistance value of the detection resistor 210 read by the first reading module 220. When a temperature change causes a slight deformation of the display panel 100, the contact area between the opposing surfaces of the first resistor 211 and the second resistor 212 decreases, and the resistance value of the detection resistor 210 increases accordingly, rising to about 120Ω. The controller determines that the adjacent display modules 110 are slightly misaligned based on the resistance value of the detection resistor 210 read by the first reading module 220. When the resistance value of the detection resistor 210 rises to exceed a set threshold, for example, a set threshold of 150Ω or 200Ω, the controller determines that the adjacent display modules 110 are severely misaligned based on the resistance value of the detection resistor 210 read by the first reading module 220.

[0034] In the existing technology, the thermal expansion coefficients of different structures of display modules vary significantly. When the ambient temperature fluctuates (such as high temperature in summer, heat generated by long-term operation of equipment, and sudden changes in indoor and outdoor temperature difference), the different structures of the display modules will undergo asynchronous thermal expansion and contraction, causing the originally aligned modules to shift relative to each other. This not only destroys the seamless splicing effect and causes visible misalignment, gaps or screen shift, but in severe cases, it can also aggravate the stress on the module structure and induce subsequent permanent damage.

[0035] In this embodiment, the display device includes a display panel 100 and a driving module 200. The display panel 100 includes at least two display modules 110, which are connected and spliced ​​together in a first direction. The driving module 200 includes at least one detection resistor 210, at least one first reading module 220, and a controller. The detection resistor 210 includes a first resistor 211 and a second resistor 212, which are respectively disposed on the driving surfaces of two adjacent display modules 110. The opposing surfaces of the first resistor 211 and the second resistor 212 are in contact, and the first resistor 211 and the second resistor 212 are aligned in a second direction. The first reading module 220 is connected to the detection resistor 210 and is used to read the resistance value of the detection resistor 210. The controller is connected to the first reading module 220 and is used to determine the degree of splicing misalignment of the display modules 110 based on the resistance value read by the detection resistor 210. By detecting the degree of splicing misalignment of the display modules 110 through the detection resistor 210, the accuracy and timeliness of the misalignment determination are improved.

[0036] In some embodiments, see Figure 3As shown, at least one side of some display modules 110 is provided with a connection slot 111, and at least one side of some display modules 110 is provided with a connection plug. Adjacent display modules 110 can be connected via the connection slot 111 and the connection plug. The connection slot 111 and the connection plug can be used for both mechanical and electrical connections between adjacent display modules 110.

[0037] Adjacent display modules 110 are mechanically connected via a connection slot 111 and a connection plug, which ensures that the opposite surfaces of the first resistor 211 and the second resistor 212 of the detection resistor 210 are in contact and aligned.

[0038] In some embodiments, the first reading module 220 includes a first voltage divider resistor 221 and a first analog-to-digital converter 222. The detection resistor 210 includes a first end and a second end opposite to each other. The first end of the detection resistor 210 is connected to the power supply 231, and the second end of the detection resistor 210 is connected to the ground terminal 232 through the first node A and the first voltage divider resistor 221. The first analog-to-digital converter 222 is connected to the first node A and the controller.

[0039] The first analog-to-digital converter 222 can convert the analog voltage value of the first node A into a digital value and output it to the controller. The controller can calculate the resistance value of the detection resistor 210 based on the voltage of the first node A, and determine the degree of splicing misalignment of the areas where the detection resistor 210 is set in the adjacent display modules 110 by the resistance value of the detection resistor 210.

[0040] It should be noted that multiple detection resistors 210 can be set in the splicing area of ​​adjacent display modules 110, and adjacent detection resistors 210 are set at intervals. Each detection resistor 210 can be set to a first reading module 220 to read the resistance value, thereby realizing the monitoring of the splicing misalignment degree of different splicing areas of the display panel 100.

[0041] In some embodiments, the first reading module 220 further includes a first filter capacitor 223, which is connected to the first node A and the ground terminal 232. The first filter capacitor 223 includes at least one of an electrolytic capacitor and a ceramic capacitor.

[0042] A first filter capacitor 223 is connected between the first node A, which connects the detection resistor 210 and the first voltage divider resistor 221, and the ground terminal 232. The first filter capacitor 223 can efficiently filter out high-frequency noise and voltage ripple, thereby improving the detection accuracy of the voltage at the first node A and the resistance value of the detection resistor 210.

[0043] In some embodiments, the first filter capacitor 223 includes an electrolytic capacitor and a ceramic capacitor, which are connected in parallel.

[0044] Electrolytic capacitors are characterized by large capacitance, strong energy storage capacity, and excellent low-frequency impedance characteristics, making them suitable for smoothing and filtering power supply ripple in the mid-to-low frequency range. Ceramic capacitors, especially multilayer ceramic chip capacitors, have advantages such as extremely low equivalent series resistance and equivalent series inductance, excellent high-frequency impedance characteristics, wide frequency response, non-polarity, and stable lifespan, effectively filtering out high-frequency switching glitches and RF domain noise. Connecting electrolytic and ceramic capacitors in parallel allows the electrolytic capacitors to attenuate low-frequency large-amplitude ripple, while the ceramic capacitors bypass and suppress high-frequency transient interference, achieving synergistic filtering of ripple and noise across the entire frequency range.

[0045] It should be noted that at least the lines connecting the grounding terminal 232 and the first node A can be shielded with tin-plated screens to isolate surrounding electromagnetic interference. The lines connecting the detection resistor 210 and the first reading module 220 can be physically isolated from the lines connecting the display driver chip and the lines connecting the in-plane driving circuit, and set with separate grounding. The driving module 200 shares a common ground with the digital ground and analog ground, suppressing ground loop interference, ensuring distortion-free signal transmission, and improving the anti-interference performance and detection stability of the driving module 200 in complex electromagnetic environments.

[0046] Example 2 The difference between Embodiment 2 and Embodiment 1 is that in Embodiment 2, the drive module 200 further includes at least one temperature detection unit 240 and at least one second reading module 250.

[0047] In some embodiments, the driving module 200 further includes at least one temperature detection unit 240 and at least one second reading module 250. The temperature detection unit 240 is disposed at the splicing edge of the display module 110 and includes a thermistor. Furthermore, the temperature detection unit 240 may also be disposed in a densely chipped area of ​​the driving surface of the display module 110 to monitor the temperature of this area in real time. The second reading module 250 is connected to the temperature detection unit 240 and is used to read the temperature measured by the temperature detection unit 240. The controller is connected to the second reading module 250 and compensates for the brightness of the display module 110 based at least on the temperature measured by the temperature detection unit 240.

[0048] The display principle of the display module 110 is not limited. It can use LED (light-emitting diode) direct display, liquid crystal display or OLED (organic light-emitting diode) display, etc. Regardless of whether it is a light-emitting diode or an organic light-emitting diode, brightness will decrease at higher temperatures. By detecting the temperature through the temperature detection unit 240, it is possible not only to determine whether the splicing misalignment of the display module 110 is caused by thermal expansion, but also to compensate the brightness of the display module 110 based on the measured temperature.

[0049] In some embodiments, the controller is configured to compensate the display screen of the display module 110 according to the degree of splicing misalignment of the display module 110, so that the brightness of the splicing area of ​​the adjacent display module 110 is close to the brightness of the surrounding area.

[0050] When the detection resistor 210 detects a misalignment between adjacent display modules 110, the edge brightness gradient algorithm is used to fine-tune the misaligned area, making the brightness of the splicing area of ​​the adjacent display modules 110 close to the brightness of the surrounding area, weakening the visual abruptness of the splicing edge, ensuring the integrity of the picture, and avoiding the impact of minor misalignment on the display quality.

[0051] In some embodiments, the second reading module 250 includes a second voltage divider resistor 251, a feedback resistor 252, a balancing resistor 253, an operational amplifier 254, and a second analog-to-digital converter 255. The second voltage divider resistor 251 includes a first terminal and a second terminal opposite to each other. The first terminal of the second voltage divider resistor 251 is connected to the power supply 231, and the second terminal of the second voltage divider resistor 251 is connected to the ground terminal 232 through the second node B and the temperature detection unit 240.

[0052] Operational amplifier 254 includes a non-inverting input, an inverting input, and an output. The non-inverting input of operational amplifier 254 is connected to the second node B. The inverting input of operational amplifier 254 is connected to ground terminal 232 through balancing resistor 253. Feedback resistor 252 is connected to both the inverting input and output of operational amplifier 254. A second analog-to-digital converter 255 is connected to the output of operational amplifier 254 and the controller.

[0053] The second analog-to-digital converter 255 can convert the analog voltage value at the output terminal of the operational amplifier 254 into a digital value and output it to the controller. The controller can calculate the temperature measured by the temperature detection unit 240 based on the voltage at the output terminal of the operational amplifier 254.

[0054] In some embodiments, the second reading module 250 further includes a second filter capacitor 256, which is connected to the ground terminal 232 and the second node B.

[0055] A second filter capacitor 256 is connected between the second node B of the temperature detection unit 240 and the second voltage divider resistor 251 and the ground terminal 232. The second filter capacitor 256 can efficiently filter out high-frequency noise and voltage ripple, improve the voltage at the output terminal of the operational amplifier 254 and the detection accuracy of the temperature measured by the temperature detection unit 240.

[0056] It should be noted that the second filter capacitor 256 may include electrolytic capacitors and ceramic capacitors, which are connected in parallel. Electrolytic capacitors are characterized by large capacitance, strong energy storage capacity, and excellent low-frequency impedance characteristics, making them suitable for smoothing power supply ripple in the mid-to-low frequency range. Ceramic capacitors, especially multilayer chip ceramic capacitors, have advantages such as extremely low equivalent series resistance and equivalent series inductance, excellent high-frequency impedance characteristics, wide frequency response, non-polarity, and stable lifespan, effectively filtering out high-frequency switching glitches and RF domain noise. The parallel connection of electrolytic and ceramic capacitors allows the electrolytic capacitors to attenuate low-frequency large-amplitude ripple, while the ceramic capacitors bypass and suppress high-frequency transient interference, achieving coordinated filtering of ripple and noise across the entire frequency range.

[0057] In some embodiments, the drive module 200 further includes a selection module 260, which includes a first transistor 261 and a second transistor 262. A first terminal of the first transistor 261 is connected to a power supply 231, a second terminal of the first transistor 261 is connected to a sensing resistor 210, and a control terminal of the first transistor 261 is connected to a controller. The control terminal, first terminal, and second terminal of the first transistor 261 can be the gate, source, and drain of the first transistor 261, respectively. A first terminal of the second transistor 262 is connected to the power supply 231, a second terminal of the second transistor 262 is connected to a temperature detection unit 240, and a control terminal of the second transistor 262 is connected to the controller. The control terminal, first terminal, and second terminal of the second transistor 262 can be the gate, source, and drain of the second transistor 262, respectively.

[0058] The controller controls the first transistor 261 to turn on, which can detect the degree of misalignment of adjacent display modules 110 through the detection resistor 210. The controller controls the second transistor 262 to turn on, which can detect the temperature of the splicing area of ​​the display module 110 through the temperature detection unit 240. The functions of detecting the degree of misalignment and the temperature of the splicing area are enabled by the controller as needed, which can reduce the power consumption of the drive module 200 and the display device.

[0059] In some embodiments, the controller is configured to turn on the first transistor 261 when the temperature measured by the temperature detection unit 240 is greater than a preset value. For example, the preset value is 50 degrees Celsius. When the temperature measured by the temperature detection unit 240 is greater than 50 degrees Celsius, the first transistor 261 turns on and detects the degree of misalignment of adjacent display modules 110 through the detection resistor 210.

[0060] The first transistor 261 and the second transistor 262 can both be N-channel metal-oxide-semiconductor (MOSFETs) or both can be P-channel MOSFETs. The controller can output two control signals to control the first transistor 261 and the second transistor 262 respectively. Alternatively, one of the first transistor 261 and the second transistor 262 can be an N-channel MOSFET and the other can be a P-channel MOSFET. In this case, the controller outputs one control signal to control the first transistor 261 and the second transistor 262.

[0061] See Figure 5 As shown, the controller controls the second transistor 262 to turn on, continuously monitors the temperature through the temperature detection unit 240, and uses the detection resistor 210 to detect the degree of misalignment of adjacent display modules 110, thus reducing the power consumption of the drive module 200 and the display device. When the temperature detection unit 240 detects a temperature greater than 50 degrees Celsius, the first transistor 261 turns on, and the detection resistor 210 detects the degree of misalignment of adjacent display modules 110. After detecting the degree of misalignment of adjacent display modules 110, the first transistor 261 turns off, and the second transistor 262 remains on, monitoring the dynamic correlation between temperature changes and misalignment status in real time. If the misalignment recovers after the temperature drops, it can be determined that the misalignment is temporary due to thermal expansion. In addition, the controller can control the second transistor 262 to turn on using a pulse width modulation (PWM) signal, continuously and intermittently turning on the second transistor 262, and continuously monitoring the temperature through the temperature detection unit 240 to further reduce the power consumption of the drive module 200 and the display device.

[0062] The terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0063] In this application, unless otherwise expressly specified and limited, the terms "assembly," "connection," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0064] In the description of this specification, references to terms such as "some embodiments," "exemplarily," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. The illustrative expressions of the above terms in this specification do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0065] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application. Therefore, any changes or modifications made in accordance with the claims and description of this application should fall within the scope of this patent application.

Claims

1. A display device comprising a display panel, the display panel comprising at least two display modules, adjacent display modules being spliced ​​and connected in a first direction, characterized in that, The display device further includes a driving module, the driving module comprising: At least one detection resistor, the detection resistor including a first resistor and a second resistor, the first resistor and the second resistor are respectively disposed on the driving surfaces of two adjacent display modules, the opposite surfaces of the first resistor and the second resistor are in contact, the first resistor and the second resistor are aligned in a second direction, the second direction being perpendicular to the first direction; At least one first reading module is connected to the detection resistor and is used to read the resistance value of the detection resistor; The controller, connected to the first reading module, is used to determine the degree of misalignment of the display module based on the resistance value read from the detection resistor.

2. The display device according to claim 1, characterized in that, The first reading module includes a first voltage divider resistor and a first analog-to-digital converter. The first end of the detection resistor is connected to the power supply, and the second end of the detection resistor is connected to the ground terminal through the first node and the first voltage divider resistor. The two ends of the first analog-to-digital converter are respectively connected to the first node and the controller, and are used to convert the analog voltage value of the first node into a digital value and output it to the controller.

3. The display device according to claim 2, characterized in that, The first reading module further includes a first filter capacitor, the two ends of which are respectively connected to the first node and the ground terminal. The first filter capacitor includes at least one of an electrolytic capacitor and a ceramic capacitor, and the first filter capacitor is connected in parallel with the first voltage divider resistor.

4. The display device according to claim 3, characterized in that, The first filter capacitor includes the electrolytic capacitor and the ceramic capacitor, which are connected in parallel.

5. The display device according to claim 1, characterized in that, The driving module further includes at least one temperature detection unit and at least one second reading module. The temperature detection unit is located at the splicing edge of the display module and includes a thermistor. The second reading module is connected to the temperature detection unit and is used to read the temperature measured by the temperature detection unit. The controller is connected to the second reading module and compensates for the brightness of the display module based on the temperature measured by the temperature detection unit.

6. The display device according to claim 5, characterized in that, The controller is configured to compensate for the display screen of the display module according to the degree of misalignment of the splicing of the display modules, so that the brightness of the splicing area of ​​the adjacent display modules is close to the brightness of the surrounding area.

7. The display device according to claim 5, characterized in that, The second reading module includes a second voltage divider resistor, a feedback resistor, a balancing resistor, an operational amplifier, and a second analog-to-digital converter. The first end of the second voltage divider resistor is connected to the power supply, and the second end of the second voltage divider resistor is connected to the ground terminal through a second node and the temperature detection unit. The non-inverting input terminal of the operational amplifier is connected to the second node, and the inverting input terminal of the operational amplifier is connected to the ground terminal through the balancing resistor. The feedback resistor is connected to the inverting input terminal and the output terminal of the operational amplifier. The two ends of the second analog-to-digital converter are respectively connected to the output terminal of the operational amplifier and the controller, and are used to convert the analog voltage value of the output terminal of the operational amplifier into a digital value and output it to the controller.

8. The display device according to claim 7, characterized in that, The second reading module further includes a second filter capacitor, the two ends of which are connected to the ground terminal and the second node, respectively, and the second filter capacitor is connected in parallel with the temperature detection unit.

9. The display device according to claim 5, characterized in that, The drive module further includes a selection module, which includes a first transistor and a second transistor. The first terminal of the first transistor is connected to the power supply, the second terminal of the first transistor is connected to the detection resistor, the control terminal of the first transistor is connected to the controller, the first terminal of the second transistor is connected to the power supply, the second terminal of the second transistor is connected to the temperature detection unit, and the control terminal of the second transistor is connected to the controller.

10. The display device according to claim 9, characterized in that, The controller is configured to turn on the first transistor when the temperature measured by the temperature detection unit is greater than a preset value.

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