Power supply device of display panel, detection method of power supply circuit and mobile terminal

Abstract

The invention relates to a power supply device of a display panel, a detection method of a power supply circuit and a mobile terminal. The power supply device of the display panel comprises a signal adjustment circuit, an IC bonding circuit, a connection module and a plurality of data lines. One end of each data line is connected with the output end of the signal adjusting circuit, and the other end of each data line is sequentially connected with the IC bonding circuit, the connecting module and a display area in the display panel; wherein the IC bonding circuit comprises at least two switches, and each switch is arranged between adjacent data lines in the IC bonding circuit. When the switch is switched on, two adjacent data lines are short-circuited, if the data lines are not broken, the display state of the pixels corresponding to the data lines changes, and if the data lines are broken, the display state of the pixels corresponding to the data lines does not change, so that the on-off condition of the data lines between the IC bonding circuit and the CT circuit is detected.

Description

Technical Field

[0001] The present application relates to the field of display technology, and in particular to a power supply device for a display panel, a detection method for a power supply circuit, and a mobile terminal. Background Art

[0002] The power supply device of the display panel includes AT circuit, IC bonding circuit, electrostatic discharge (ESD) protection circuit, current transformer (CT) circuit and bending area, and each circuit or area is connected by a data line. Since the static current of the data line passing through the edge position is large, it is easy to break the line.

[0003] In the related art, the on-off status of the data line is tested by lighting the screen. Since the signal for lighting the screen starts from the CT circuit, passes through the bending area, and finally reaches the display area in the display panel to light up the screen, it is difficult to detect the on-off status of the data line between the IC bonding circuit and the CT circuit. Summary of the invention

[0004] Based on this, it is necessary to provide a power supply device for a display panel, a detection method for a power supply circuit, and a mobile terminal that can detect the on / off status of a Data line between an IC bonding circuit and a CT circuit in order to solve the above technical problems.

[0005] In a first aspect, the present application provides a power supply device for a display panel, the power supply device comprising: a signal adjustment circuit, an IC bonding circuit, a connection module and a plurality of data lines; one end of the plurality of data lines is connected to an output end of the signal adjustment circuit, and the other ends of the plurality of data lines are connected to the IC bonding circuit, the connection module and a display area in the display panel in sequence;

[0006] The IC bonding circuit includes at least two switches, and each of the switches is arranged between adjacent data lines in the IC bonding circuit.

[0007] In one embodiment, the IC bonding circuit includes: a first switch and a second switch; the first switch is arranged between adjacent data lines in an edge area on one side of the IC bonding circuit, and the second switch is arranged between adjacent data lines in an edge area on the other side of the IC bonding circuit.

[0008] In one embodiment, the switch is a semiconductor switch.

[0009] In one of the embodiments, a first interlayer dielectric ILD hole, a second ILD hole, a third ILD hole and a fourth ILD hole are provided on the source and drain of the semiconductor switch, and a fifth ILD hole is provided on the gate of the semiconductor switch; the semiconductor switch is connected to the adjacent data line through the first ILD hole, the second ILD hole, the third ILD hole and the fourth ILD hole, and the semiconductor switch is connected to the voltage through the fifth ILD hole.

[0010] In one embodiment, the cut-off voltage of the semiconductor switch is 7V, and the on-voltage of the semiconductor switch is -7V.

[0011] In one embodiment, the connection module includes an ESD circuit, a CT circuit and a bending area; the other ends of the multiple data lines are connected to the IC bonding circuit, the ESD circuit, the CT circuit, the bending area and the display area in the display panel in sequence.

[0012] In a second aspect, the present application further provides a mobile terminal, comprising a power supply device and a display panel as described in the first aspect.

[0013] In a third aspect, the present application further provides a method for detecting a power supply circuit, the method being applied to the power supply device as described in the first aspect, the method comprising:

[0014] Turning on a target switch in the IC bonding circuit and determining a target data line connected to the target switch;

[0015] Detecting the display status of pixels corresponding to the target data line in the display area;

[0016] A detection result of the target data line is determined according to the display state.

[0017] In one embodiment, determining the detection result of the target data line according to the display state includes:

[0018] If the display state of the pixel corresponding to the target data line changes, determining the detection result is that the target data line is in a normal connection state;

[0019] If the display state of the pixel corresponding to the target data line does not change, it is determined that the detection result is that the target data line is in an abnormal connection state.

[0020] In one embodiment, if the display state of the pixel corresponding to the target data line changes, determining the detection result that the target data line is in a normal connection state includes:

[0021] If the display state of the pixel corresponding to the target data line changes, and the display brightness is within a preset brightness range, then determining that the detection result is that the target data line is in a normal connection state;

[0022] If the display state of the pixel corresponding to the target data line changes, and the display brightness is not within the preset brightness range, it is determined that the detection result is that the target data line is in an abnormal connection state.

[0023] The power supply device of the display panel, the detection method of the power supply circuit and the mobile terminal, the power supply device of the display panel includes: a signal adjustment circuit, an IC bonding circuit, a connection module and a plurality of data lines; one end of the plurality of data lines are connected to the output end of the signal adjustment circuit, and the other ends of the plurality of data lines are connected to the IC bonding circuit, the connection module and the display area in the display panel in sequence; wherein the IC bonding circuit includes at least two switches, each switch is arranged between adjacent data lines in the IC bonding circuit. When the switch is turned on, the two adjacent data lines are short-circuited, if the data lines are not disconnected, the display state of the pixel corresponding to the data line changes, if the data line is disconnected, the display state of the pixel corresponding to the data line does not change, thereby detecting the on-off state of the data line between the IC bonding circuit and the CT circuit. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present application or related technologies, the drawings required for use in the embodiments of the present application or related technical descriptions will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0025] FIG1 is a schematic diagram of a conventional power supply device for a display panel;

[0026] FIG2 is a schematic diagram of a power supply device for a display panel in one embodiment;

[0027] FIG3 is a schematic diagram of data lines and pixels in one embodiment;

[0028] FIG4 is a schematic diagram of a power supply device for a display panel in another embodiment;

[0029] FIG5 is a schematic diagram of the structure of a switch in one embodiment;

[0030] FIG6 is a schematic diagram of a power supply device for a display panel in another embodiment;

[0031] FIG7 is a schematic flow chart of a method for detecting a power supply circuit in one embodiment;

[0032] FIG8 is a schematic flow chart of a method for detecting a power supply circuit in another embodiment;

[0033] FIG9 is a schematic flow chart of a method for detecting a power supply circuit in another embodiment;

[0034] FIG10 is a schematic flow chart of a method for detecting a power supply circuit in another embodiment;

[0035] Description of reference numerals:

[0036] Power supply device 01; Display area 02; Signal adjustment circuit 10;

[0037] IC bonding circuit 20; connection module 30; data line 40;

[0038] Switch 50; First switch 501; Second switch 502;

[0039] A first ILD hole 5001; A second ILD hole 5002; A third ILD hole 5003;

[0040] Fourth ILD hole 5004; Fifth ILD hole 5005; ESD circuit 301;

[0041] CT circuit 302; bending region 303. DETAILED DESCRIPTION

[0042] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0043] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0044] In the accompanying drawings, for clarity, the relative sizes of elements, layers and regions can be exaggerated and / or simplified. Spatial relative terms such as "below", "below", "lower", "below", "above" and "upper" can be used in this article for convenience of explanation to describe the relationship between an element or feature and another (some) element or feature as illustrated in the figure. It will be understood that, in addition to the orientation depicted in the figure, spatial relative terms are intended to include different orientations of the device in use or in operation. For example, if the device in the figure is flipped, the element described as "below" or "below" or "below" of other elements or features will be subsequently oriented to "above" other elements or features. Therefore, the example terms "below" and "below" can include both the orientation above and below. The device can be oriented in addition (for example, rotated 90 degrees or according to other orientations) and the spatial relative descriptors used herein should be interpreted accordingly.

[0045] It is understood that the terms "first", "second", etc. used in this application may be used herein to describe various elements, but these elements are not limited by these terms. These terms are only used to distinguish a first element from another element. For example, without departing from the scope of this application, a first resistor may be referred to as a second resistor, and similarly, a second resistor may be referred to as a first resistor. Both the first resistor and the second resistor are resistors, but they are not the same resistor.

[0046] It will be understood that when an element or layer is referred to as being "on," "connected" or "coupled" to another element or layer, it can be directly on, directly connected or directly coupled to the other element or layer, or there can be one or more intervening elements or layers. In addition, it will also be understood that when an element or layer is referred to as being "between" two elements or layers, it can be the only element or layer between the two elements or layers, or there can be one or more intervening elements or layers.

[0047] It is understood that "at least one" means one or more, and "plurality" means two or more. "At least part of an element" means part or all of an element. When used herein, the singular forms "one", "an" and "said / the" may also include plural forms unless the context clearly indicates otherwise. It should also be understood that the terms "include / comprise" or "have" etc. specify the presence of stated features, wholes, steps, operations, components, parts or combinations thereof, but do not exclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts or combinations thereof. At the same time, the term "and / or" used in this specification includes any and all combinations of the relevant listed items.

[0048] First, before specifically introducing the technical solution of the embodiment of the present disclosure, the technical background or technical evolution context on which the embodiment of the present disclosure is based is introduced. The screen of a terminal or other equipment can be lit by lighting the screen or lighting the module. As shown in FIG1 , the power supply circuit structure of the lower frame of the screen includes: an AT circuit, an IC bonding circuit, an ESD circuit, a CT circuit, and a bending area. In the test scenario, the screen is lit by lighting the screen, and in the use scenario, the screen is lit by lighting the module. In the process of lighting the screen, the Data signal starts from the CT circuit, passes through the bending area, and finally reaches the display area to realize the lighting of the screen; in the process of lighting the module, the Data signal starts from the IC bonding circuit, passes through the ESD circuit, the CT circuit, and the bending area, and finally reaches the display area to realize the lighting of the screen. Therefore, if the location of the Data disconnection is between the CT circuit and the IC bonding circuit, since the Data signal does not flow through this location, it is difficult to detect the on-off status of the data line between the IC bonding circuit and the CT circuit in the test scenario.

[0049] In one embodiment, as shown in FIG. 2 , a power supply device 01 for a display panel is provided, comprising: a signal adjustment circuit 10, an IC bonding circuit 20, a connection module 30 and a plurality of data lines 40; one end of the plurality of data lines 40 are connected to the output end of the signal adjustment circuit 10, and the other ends of the plurality of data lines 40 are connected to the IC bonding circuit 20, the connection module 30 and the display area 02 in the display panel in sequence; wherein the IC bonding circuit 20 comprises at least two switches 50, and each switch 50 is arranged between adjacent data lines 40 in the IC bonding circuit 20.

[0050] Among them, the signal adjustment circuit 10 is an AT circuit, which refers to an active matrix circuit used to control the pixel matrix in the display panel, including a thin film transistor (TFT), a capacitor, a scan line and a data line 40, etc. The driving circuit of a single pixel is usually composed of several TFTs and a capacitor; the IC bonding circuit 20 refers to a circuit that uses bonding technology to connect the internal circuit of the chip with the package pin or the circuit board, which can ensure the reliability of the electrical connection and improve the product's corrosion resistance, shock resistance and stability; the data line 40 can be expressed as a Data line, which is a cable for transmitting data and / or charging.

[0051] In an embodiment of the present application, as shown in FIG2 , a plurality of data lines 40 run through a power supply device 01 of a display panel, one end of each of the plurality of data lines 40 is connected to an output end of a signal adjustment circuit 10, and the other end of each of the plurality of data lines 40 is connected to an IC bonding circuit 20, a connection module 30, and a display area 02 in the display panel in sequence, thereby transmitting a signal for lighting up the display area 02 from the signal adjustment circuit 10, the IC bonding circuit 20, and the connection module 30 in sequence to the display area 02 of the display panel.

[0052] In the embodiment of the present application, the IC bonding circuit 20 includes at least two switches 50, which are arranged between two adjacent data lines 40, and are used to control the two adjacent data lines 40 to be turned on or work independently. The conduction means that the two adjacent data lines 40 are short-circuited with each other. When the on-off status of the data lines 40 is tested, the switch 50 is turned on, so that the two adjacent data lines 40 are short-circuited with each other, and the voltages of the two adjacent data lines 40 affect each other, thereby affecting the luminescence of the two groups of pixels corresponding to the two data lines 40. For example, as shown in FIG3, the two adjacent data lines 40 are Data1 and Data2, the pixels corresponding to Data1 are the green pixel group, and the pixel group corresponding to Data2 is the red and blue pixel group, and the working voltage of each pixel group is 3V. Assuming that the voltage of Data1 is 7V and the voltage of Data2 is 3V when the two data lines 40 work independently, the green pixel group is turned off, and the red and blue pixel group emits light normally. When Data1 and Data2 are turned on, if neither Data1 nor Data2 is broken, the voltage of Data1 drops, the green pixel group is slightly brighter, the voltage of Data2 increases, and the red and blue pixel groups become darker; if at least one of Data1 and Data2 is broken, Data1 and Data2 do not affect each other, and the luminescence of the green pixel group and the red pixel group does not change.

[0053] Optionally, the IC bonding circuit 20 may include a plurality of switches 50, and the switch 50 may be disposed between any two adjacent data lines 40, so as to control the conduction or independent operation of any two adjacent data lines 40. Optionally, the switch 50 may be any switch such as a relay, a vacuum tube switch, a field effect transistor switch, etc.

[0054] The power supply device of the display panel includes: a signal adjustment circuit, an IC bonding circuit, a connection module and a plurality of data lines; one end of the plurality of data lines is connected to the output end of the signal adjustment circuit, and the other end of the plurality of data lines is connected to the IC bonding circuit, the connection module and the display area in the display panel in sequence; wherein the IC bonding circuit includes at least two switches, each switch is arranged between adjacent data lines in the IC bonding circuit. When the switch is turned on, the two adjacent data lines are short-circuited. If the data lines are not disconnected, the display state of the pixel corresponding to the data line changes. If the data line is disconnected, the display state of the pixel corresponding to the data line does not change, thereby detecting the on-off state of the data line between the IC bonding circuit and the CT circuit.

[0055] In one embodiment, as shown in FIG. 4 , the IC bonding circuit 20 includes: a first switch 501 and a second switch 502; the first switch 501 is disposed between adjacent data lines 40 in an edge region on one side of the IC bonding circuit 20, and the second switch 502 is disposed between adjacent data lines 40 in an edge region on the other side of the IC bonding circuit 20.

[0056] In the embodiment of the present application, since the electrostatic current passing through the data line 40 at the edge is large and the line break problem is prone to occur, while the electrostatic current of the data line 40 at the center is small and the electrostatic problem is not prone to occur, switches are respectively set at the left edge and the right edge of the IC bonding circuit 20. As shown in FIG2, the first switch 501 is set between adjacent data lines 40 in the edge area on one side of the IC bonding circuit 20. The second switch 502 is set between adjacent data lines 40 in the edge area on the other side of the IC bonding circuit 20.

[0057] Optionally, the switch 50 is a semiconductor switch, and the source and drain of the switch 50 are P-type doped silicon materials, that is, the source and drain of the switch 50 are P-Si, and the gate of the switch 50 is metal molybdenum Mo. The source and drain of the first switch 501 are connected to the adjacent data line 40 in the edge region on one side of the IC bonding circuit 20, and the gate of the first switch 501 is connected to the power supply; the source and drain of the second switch 502 are connected to the adjacent data line 40 in the edge region on the other side of the IC bonding circuit 20, and the gate of the first switch 501 is connected to the power supply.

[0058] For example, as shown in FIG5 , a first interlayer dielectric ILD hole 5001, a second ILD hole 5002, a third ILD hole 5003, and a fourth ILD hole 5004 are provided on the source and drain of the semiconductor switch 50, and a fifth ILD hole 5005 is provided on the gate of the semiconductor switch 50; the semiconductor switch 50 is connected to the adjacent data line 40 through the first ILD hole 5001, the second ILD hole 5002, the third ILD hole 5003, and the fourth ILD hole 5004, and the semiconductor switch 50 is connected to the voltage through the fifth ILD hole 5005. The semiconductor switch 50 is connected to one data line 40 through the first ILD hole 5001 and the second ILD hole 5002, is connected to another adjacent data line 40 through the third ILD hole 5003 and the fourth ILD hole 5004, and is connected to the power supply through the fifth ILD hole 5005, and the power supply can be the internal power supply of the terminal or a separately connected external power supply.

[0059] In the embodiment of the present application, the semiconductor switch 50 has the characteristics of being cut off at a high level and being turned on at a low level. Optionally, the cut-off voltage of the semiconductor switch 50 is 7V, and the turn-on voltage of the semiconductor switch 50 is -7V.

[0060] The power supply device provided in the embodiment of the present application has a first switch set on one edge of the IC bonding circuit and a second switch set on the other edge, so that the on-off status of the two data lines on one edge is determined by controlling the on and off of the first switch, and the on-off status of the two data lines on the other edge is determined by controlling the on and off of the second switch.

[0061] In one embodiment, as shown in Figure 6, the above-mentioned connection module 30 includes an ESD circuit 301, a CT circuit and a bending area 303; the other ends of the multiple data lines 40 are connected to the IC bonding circuit 20, the ESD circuit 301, the CT circuit, the bending area 303 and the display area 02 in the display panel in sequence.

[0062] Among them, the ESD circuit 301 is an electrostatic discharge protection circuit. Since electrostatic discharge usually has an instantaneous high voltage, which may cause damage to semiconductor devices in electronic equipment, in order to avoid such damage, the ESD circuit 301 is added to the power supply; the current transformer (CT) circuit is a circuit that converts a large primary current into a small secondary current based on the principle of electromagnetic induction, thereby measuring, protecting and controlling; the bending area 303 bends or folds the display screen without losing display quality.

[0063] In an embodiment of the present application, the data line 40 is connected to the signal adjustment circuit 10, the IC bonding circuit 20, the ESD circuit 301, the CT circuit 302, the bending area 303, and the display area 02 in the display panel in sequence, so that the current and / or signal passes through the signal adjustment circuit 10, the IC bonding circuit 20, the ESD circuit 301, the CT circuit, the bending area 303 in sequence and reaches the display area 02 in the display panel.

[0064] The power supply device provided in the embodiment of the present application, the connection module includes an ESD circuit, a CT circuit and a bending area. The ESD circuit, CT circuit and bending area in the connection module cooperate with the signal adjustment circuit, the IC bonding circuit and the display area in the display panel to realize the display function of the terminal.

[0065] In one embodiment, a mobile terminal is provided, comprising the power supply device and the display panel as described in the above embodiment.

[0066] In addition, the structure and working principle of the power supply device included in the mobile terminal provided in this embodiment can be referred to the detailed description of the power supply device in the above embodiment, which will not be described in detail in this embodiment.

[0067] In one embodiment, as shown in FIG7 , a method for detecting a power supply circuit is provided, comprising:

[0068] S201, turning on a target switch in the IC bonding circuit, and determining a target data line connected to the target switch.

[0069] In an embodiment of the present application, the IC bonding circuit includes at least two switches, each switch is connected to two adjacent data lines respectively, and according to the current detection requirements, a target switch is determined from the at least two switches, and the two data lines connected to the target switch are determined as target data lines.

[0070] S202, detecting the display status of pixels corresponding to the target data line in the display area.

[0071] In an embodiment of the present application, the display area includes multiple pixels, each pixel corresponds to a data line, and the pixel corresponding to the target data line is determined based on the correspondence between the data line and the pixel. Furthermore, a preset detection component can be used to detect the display state of the pixel corresponding to the target data line.

[0072] Optionally, the display state of a pixel may be whether the pixel is emitting light, or the display state of a pixel may be the luminous brightness of the pixel.

[0073] S203, determining a detection result of the target data line according to the display state.

[0074] The detection result of the target data line is used to characterize the connection state of the target data line.

[0075] In an embodiment of the present application, a detection result of a target data line is determined based on a display state of a pixel corresponding to the target data line. Optionally, a correspondence between a display state and a connection state can be pre-formed, thereby determining the connection state of the target data line based on the display result, and forming a detection result of the target data line based on the connection state.

[0076] In the detection method of the power supply circuit, the target switch in the IC bonding circuit is turned on, and the target data line connected to the target switch is determined; the display state of the pixel corresponding to the target data line in the display area is detected; and the detection result of the target data line is determined according to the display state. The target switch in the IC bonding circuit is turned on to short-circuit two adjacent target data lines, so that the detection result of the target data line is determined according to the display state of the pixel corresponding to the target data line, and the on-off status of the data line is obtained.

[0077] In one embodiment, an implementation of the above S203 is provided, as shown in FIG8 , wherein the above “determining the detection result of the target data line according to the display state” includes:

[0078] S301: If the display state of the pixel corresponding to the target data line changes, it is determined that the detection result is that the target data line is in a normal connection state.

[0079] S302: If the display state of the pixel corresponding to the target data line does not change, it is determined that the detection result is that the target data line is in an abnormal connection state.

[0080] In the embodiment of the present application, when testing the on-off condition of the data line, the switch is turned on so that the two adjacent data lines are short-circuited to each other, and the voltages of the two adjacent data lines affect each other, thereby affecting the luminescence of the two groups of pixels corresponding to the two data lines. Exemplarily, as shown in FIG3 , the two adjacent data lines are Data1 and Data2, the pixels corresponding to Data1 are the green pixel group, and the pixel group corresponding to Data2 is the red and blue pixel group, and the working voltage of each pixel group is 3V. Assuming that the voltage of Data1 is 7V and the voltage of Data2 is 3V when the two data lines work independently, the green pixel group is turned off and the red and blue pixel groups emit light normally. When Data1 and Data2 are turned on, if there is no disconnection in Data1 and Data2, the voltage of Data1 drops, the green pixel group is slightly bright, the voltage of Data2 increases, and the red and blue pixel group becomes dark; if at least one of Data1 and Data2 is disconnected, Data1 and Data2 do not affect each other, and the luminescence of the green pixel group and the red pixel group does not change.

[0081] As another optional implementation, as shown in FIG. 9 , the above “if the display state of the pixel corresponding to the target data line changes, then determining that the detection result is that the target data line is in a normal connection state” includes:

[0082] S401: If the display state of the pixel corresponding to the target data line changes and the display brightness is within a preset brightness range, it is determined that the detection result is that the target data line is in a normal connection state.

[0083] S402: If the display state of the pixel corresponding to the target data line changes and the display brightness is not within the preset brightness range, it is determined that the detection result is that the target data line is in an abnormal connection state.

[0084] Optionally, the highest and lowest brightness values ​​of the pixels corresponding to the data lines in the normal connection state during the detection process can be determined based on historical detection data, so as to pre-set a brightness range based on the highest and lowest values, and if the display brightness is within the preset brightness range, the detection result is determined to be that the target data line is in a normal connection state; if the display brightness is not within the preset brightness range, the data line connection is abnormal, and the detection result is determined to be that the target data line is in an abnormal connection state.

[0085] The power supply circuit detection method provided in the embodiment of the present application ensures the accuracy of the detection result based on the principle that voltages affect each other when two normally connected data lines are short-circuited, and whether the display state of the pixel corresponding to the target data line changes.

[0086] In summary of all the above embodiments, the present application further provides a method for detecting a power supply circuit, as shown in FIG10 , the method comprising:

[0087] S1, turns on the target switch in the IC bonding circuit and determines the target data line connected to the target switch;

[0088] S2, detecting the display status of the pixels corresponding to the target data line in the display area;

[0089] S3, if the display state of the pixel corresponding to the target data line changes and the display brightness is within the preset brightness range, then the detection result is determined to be that the target data line is in a normal connection state;

[0090] S4, if the display state of the pixel corresponding to the target data line changes and the display brightness is not within the preset brightness range, then determining that the detection result is that the target data line is in an abnormal connection state;

[0091] S5, if the display state of the pixel corresponding to the target data line does not change, it is determined that the detection result is that the target data line is in an abnormal connection state.

[0092] In the detection method of the power supply circuit, the target switch in the IC bonding circuit is turned on, and the target data line connected to the target switch is determined; the display state of the pixel corresponding to the target data line in the display area is detected; and the detection result of the target data line is determined according to the display state. The target switch in the IC bonding circuit is turned on to short-circuit two adjacent target data lines, so that the detection result of the target data line is determined according to the display state of the pixel corresponding to the target data line, and the on-off status of the data line is obtained.

[0093] It should be understood that, although the various steps in the flowcharts involved in the above-mentioned embodiments are displayed in sequence according to the indication of the arrows, these steps are not necessarily executed in sequence according to the order indicated by the arrows. Unless there is a clear explanation in this article, the execution of these steps does not have a strict order restriction, and these steps can be executed in other orders. Moreover, at least a part of the steps in the flowcharts involved in the above-mentioned embodiments can include multiple steps or multiple stages, and these steps or stages are not necessarily executed at the same time, but can be executed at different times, and the execution order of these steps or stages is not necessarily to be carried out in sequence, but can be executed in turn or alternately with other steps or at least a part of the steps or stages in other steps.

[0094] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this application.

[0095] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the attached claims.

Claims

1. A power supply device for a display panel, characterized in that: The power supply device comprises: a signal adjustment circuit, an IC bonding circuit, a connection module and a plurality of data lines; one end of the plurality of data lines is connected to the output end of the signal adjustment circuit, and the other end of the plurality of data lines is connected to the IC bonding circuit, the connection module and the display area of ​​the display panel in sequence; The IC bonding circuit includes at least two switches, and each of the switches is arranged between adjacent data lines in the IC bonding circuit.

2. The power supply device according to claim 1, characterized in that: The IC bonding circuit includes: a first switch and a second switch; the first switch is arranged between adjacent data lines in an edge region on one side of the IC bonding circuit, and the second switch is arranged between adjacent data lines in an edge region on the other side of the IC bonding circuit.

3. The power supply device according to claim 1 or 2, characterized in that: The switch is a semiconductor switch.

4. The power supply device according to claim 3, characterized in that: A first interlayer dielectric ILD hole, a second ILD hole, a third ILD hole and a fourth ILD hole are arranged on the source and drain of the semiconductor switch, and a fifth ILD hole is arranged on the gate of the semiconductor switch; the semiconductor switch is connected to the adjacent data line through the first ILD hole, the second ILD hole, the third ILD hole and the fourth ILD hole, and the semiconductor switch is connected to the voltage through the fifth ILD hole.

5. The power supply device according to claim 3, characterized in that: The cut-off voltage of the semiconductor switch is 7V, and the on-voltage of the semiconductor switch is -7V.

6. The power supply device according to claim 1 or 2, characterized in that: The connection module includes an ESD circuit, a CT circuit and a bending area; the other ends of the multiple data lines are sequentially connected to the IC bonding circuit, the ESD circuit, the CT circuit, the bending area and the display area in the display panel.

7. A mobile terminal, characterized in that: The mobile terminal comprises the power supply device and the display panel as described in claims 1-6.

8. A method for detecting a power supply circuit, characterized in that: The method is applied to the power supply device according to claims 1 to 6, and the method comprises: Turning on a target switch in the IC bonding circuit and determining a target data line connected to the target switch; Detecting the display status of pixels corresponding to the target data line in the display area; A detection result of the target data line is determined according to the display state.

9. The method according to claim 8, characterized in that The step of determining the detection result of the target data line according to the display state includes: If the display state of the pixel corresponding to the target data line changes, determining the detection result is that the target data line is in a normal connection state; If the display state of the pixel corresponding to the target data line does not change, it is determined that the detection result is that the target data line is in an abnormal connection state.

10. The method according to claim 9, characterized in that If the display state of the pixel corresponding to the target data line changes, determining that the detection result is that the target data line is in a normal connection state includes: If the display state of the pixel corresponding to the target data line changes, and the display brightness is within a preset brightness range, then determining that the detection result is that the target data line is in a normal connection state; If the display state of the pixel corresponding to the target data line changes, and the display brightness is not within the preset brightness range, it is determined that the detection result is that the target data line is in an abnormal connection state.

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