Display panel and detection method thereof, display device, and storage medium

Abstract

The present invention provides a display panel and a detection method thereof, a display device, and a storage medium. The display panel includes a substrate having a display area; a plurality of pixel units arranged in the display area; a plurality of signal lines electrically connected to the plurality of pixel units to transmit drive signals to the plurality of pixel units; a charge coupling unit corresponding to at least part of the plurality of signal lines and used to couple the drive signal into a potential signal; and a voltage detection unit electrically connected to the charge coupling unit, the voltage detection unit being used to receive the potential signal and confirm the drive signal.

Description

Technical Field

[0001] The present invention relates to a display panel and a detection method thereof, and in particular to a display panel and a detection method thereof, a display device, and a storage medium capable of realizing detection under the premise of ensuring the integrity of the display panel. Background Art

[0002] With the development of technology, display devices are widely used in many electronic products, such as mobile phones, tablet computers, watches, cars, etc.

[0003] After the production of existing display panels is completed, if the product needs to be analyzed and tested (for example, to respond to customer complaints or other abnormal analysis), it is usually done by destroying the product (for example, removing the optical glass (CG) to allow a probe to contact the test points on the display panel), which causes damage to the product or increases the difficulty of the test, making the operation inconvenient.

[0004] Therefore, how to provide a method for implementing product testing without destroying the display panel and keeping the display panel intact is one of the problems that need to be solved. Summary of the invention

[0005] The embodiments of the present invention provide a display panel and a detection method thereof, a display device, and a storage medium, which can conveniently implement the test of the display panel and improve the test efficiency while ensuring the integrity of the display panel.

[0006] A display panel according to one embodiment of the present invention comprises a substrate having a display area; a plurality of pixel units arranged in the display area; a plurality of signal lines electrically connected to the plurality of pixel units to transmit drive signals to the plurality of pixel units; a charge coupling unit corresponding to at least part of the plurality of signal lines and used to couple the drive signal into a potential signal; and a voltage detection unit electrically connected to the charge coupling unit, wherein the voltage detection unit is used to receive the potential signal and confirm the drive signal.

[0007] In the above-mentioned display panel, the driving signal is a timing pulse signal, and the potential signal is a step voltage.

[0008] In the above-mentioned display panel, the voltage detection unit includes: a judgment module, used to judge whether the step voltage is within a preset voltage range.

[0009] In the above-mentioned display panel, the voltage detection unit further comprises: a result output unit, configured to output a feedback signal when the step voltage is not within the preset voltage range.

[0010] In the above-mentioned display panel, the step voltage includes a plurality of step voltages, the preset voltage range includes a plurality of voltage intervals, and each of the step voltages corresponds to one of the voltage intervals.

[0011] The above-mentioned display panel, wherein the multiple signal lines include a first group of signal lines and a second group of signal lines, the voltage detection unit includes a first detection unit, the charge coupling unit includes a first coupling unit, the first detection unit is electrically connected to the first coupling unit, and the first coupling unit corresponds to the first group of signal lines.

[0012] The above-mentioned display panel, wherein the multiple signal lines further include a third group of signal lines, the voltage detection unit further includes a second detection unit, the charge coupling unit includes a second coupling unit, the second detection unit is electrically connected to the second coupling unit, and the second coupling unit corresponds to the third group of signal lines.

[0013] The above-mentioned display panel, wherein the display panel further comprises: a driving circuit, electrically connected to the plurality of signal lines, for sequentially providing the timing pulse signals to the plurality of signal lines within a driving cycle.

[0014] The above-mentioned display panel, wherein the display panel also has a peripheral area, the peripheral area is at least located on one side of the display area, and the display panel further includes: a driving element, located in the peripheral area, and the voltage detection unit is arranged on the driving element.

[0015] In the above-mentioned display panel, the driving element comprises a first pin, and the first pin is electrically connected to the charge coupling unit and the voltage detection unit respectively.

[0016] In the above-mentioned display panel, the driving element further comprises: a charge release unit electrically connected to the charge coupling unit.

[0017] In the above-mentioned display panel, the driving element comprises a second pin, and the second pin is electrically connected to the charge coupling unit and the charge releasing unit respectively.

[0018] In the above-mentioned display panel, the first pin and the second pin are the same pin or different pins.

[0019] In the above-mentioned display panel, a display frame includes a first period and a second period. In the first period, the voltage detection unit confirms the driving signal, and in the second period, the charge release unit releases the coupled charges in the charge coupling unit.

[0020] In the above-mentioned display panel, the first period is a data refresh period, and the second period is a blank time period.

[0021] The above-mentioned display panel, wherein the driving element further includes: a switch unit, which is arranged between the charge coupling unit and the voltage detection unit and the charge release unit; wherein in the first time period, the switch unit makes the voltage detection unit and the charge coupling unit conductive, and the charge release unit and the charge coupling unit disconnected; in the second time period, the switch unit makes the voltage detection unit and the charge coupling unit disconnected, and the charge release unit and the charge coupling unit conductive.

[0022] The display panel mentioned above, wherein the display panel further comprises: a signal detection line, at least a portion of the signal detection line overlaps the plurality of signal lines; wherein the charge coupling unit is disposed between the overlapping plurality of signal lines and the signal detection line.

[0023] An embodiment of the present invention provides a method for detecting a display panel, wherein the method is used to detect the display panel as described above, and the method comprises: acquiring the potential signal of the charge coupled unit; and determining whether the potential signal is within a preset voltage range.

[0024] In the above detection method, wherein the potential signal is a step voltage, the method further comprises: when the step voltage is not within the preset voltage range, outputting a feedback signal.

[0025] The above detection method further comprises: releasing the coupled charges in the charge coupling unit.

[0026] A display device according to an embodiment of the present invention includes any one of the display panels described above.

[0027] A storage medium according to an embodiment of the present invention is used to store a computer program, wherein the computer program is used to execute any one of the detection methods described above.

[0028] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments, but is not intended to limit the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic structural diagram of a display device according to an embodiment of the present invention.

[0030] Figure 2 It is a partially enlarged schematic diagram of a display device according to an embodiment of the present invention.

[0031] Figure 3FIG. 4 is a schematic diagram of a driving signal according to an embodiment of the present invention.

[0032] Figure 4 FIG. 4 is a timing diagram of a potential signal according to an embodiment of the present invention.

[0033] Figure 5 It is a schematic diagram of the structure of a driving element according to an embodiment of the present invention.

[0034] Figure 6 It is a schematic structural diagram of a display device according to another embodiment of the present invention.

[0035] Figure 7 It is a partially enlarged schematic diagram of a display device according to yet another embodiment of the present invention.

[0036] Wherein, the reference numerals are:

[0037] 100: Display panel

[0038] 101: Substrate

[0039] 102: Charge Coupled Unit

[0040] 1021: First coupling unit

[0041] 1022: Second coupling unit

[0042] 103: Voltage detection unit

[0043] 1031: Judgment module

[0044] 1032: Result output unit

[0045] 104: Driving circuit

[0046] 105: Driving element

[0047] 1051: First pin

[0048] 1052: Charge release unit

[0049] 1053: Second pin

[0050] 1054: Switching unit

[0051] AA: Display area

[0052] BA: Peripheral area

[0053] C1~CN: coupling capacitor

[0054] FRAME1, FRAME2: Display frames

[0055] GL1~GLN: signal line

[0056] GLA: The first set of signal lines

[0057] GLB: The second set of signal lines

[0058] T1: The first period

[0059] T2: The second period DETAILED DESCRIPTION

[0060] The structural principle and working principle of the present invention are described in detail below in conjunction with the accompanying drawings:

[0061] Figure 1 is a schematic structural diagram of a display device according to an embodiment of the present invention, Figure 2 is a partially enlarged schematic diagram of a display device according to an embodiment of the present invention, Figure 3 is a schematic diagram of a driving signal according to an embodiment of the present invention, Figure 4 is a timing diagram of a potential signal according to an embodiment of the present invention, Figure 5 Schematic diagram of the structure of a driving element according to an embodiment of the present invention. Figures 1 to 5 As shown, the display panel 100 of the present invention includes a substrate 101, a plurality of pixel units, a plurality of signal lines, a charge coupling unit 102 and a voltage detection unit 103. The substrate 101 has a display area AA and a peripheral area BA arranged adjacent to each other, and the peripheral area BA is at least located on one side of the display area AA. A plurality of pixel units arranged in an array are formed in the display area AA (not shown in the figure). A plurality of signal lines GL1, GL2, GL3, GL4...GLN-1, GLN are electrically connected to the corresponding plurality of pixel units in the display area AA to transmit drive signals G1, G2, G3, G4...GN-1, GN to the corresponding plurality of pixel units respectively. The charge coupling unit 102 corresponds to part or all of the plurality of signal lines GL1, GL2, GL3, GL4...GLN-1, GLN, and is used to couple the drive signals G1, G2, G3, G4...GN-1, GN on the signal lines GL1, GL2, GL3, GL4...GLN-1, GLN into potential signals and transmit them to the voltage detection unit 103. The voltage detection unit 103 is electrically connected to the charge coupled unit 102 , and is used to confirm whether the driving signals G1 , G2 , G3 , G4 . . . GN-1 , GN are in a normal working state according to the received potential signals.

[0062] In the present invention, since the display panel 100 is provided with a charge coupling unit 102 corresponding to at least part of the signal lines GL1, GL2, GL3, GL4...GLN-1, GLN, the driving signals G1, G2, G3, G4...GN-1, GN on the signal lines GL1, GL2, GL3, GL4...GLN-1, GLN are coupled into potential signals, and then the voltage detection unit 103 is used to confirm whether each driving signal is normal according to the received potential signal. In this way, if the display panel 100 needs to be analyzed and tested after the display panel 100 is produced, the test can be completed conveniently without destroying the display panel 100 to confirm whether the driving signals G1, G2, G3, G4...GN-1, GN are normal, thereby maintaining the integrity of the display panel 100, and the testing process is convenient and fast.

[0063] In one embodiment, the display panel 100 further has a driving circuit 104, which is electrically connected to the signal lines GL1, GL2, GL3, GL4...GLN-1, GLN, and the signal line driving signals G1, G2, G3, G4...GN-1, GN are provided by the driving circuit 104, and the driving signals G1, G2, G3, G4...GN-1, GN provided by the driving circuit 104 are timing pulse signals, which provide driving signals to the signal lines GL1, GL2, GL3, GL4...GLN-1, GLN respectively and sequentially in one driving cycle, and the potential signal can be a step voltage. Figure 2 As shown, the driving circuit 104 is disposed in the peripheral area BA and located on one side of the display area AA, but is not limited thereto and may also be disposed in the display area AA or disposed in the peripheral area BA and adjacent to multiple sides of the display area AA. In one embodiment, the driving circuit 104 is a GOA (gate on array) circuit.

[0064] After the display panel 100 is produced, the present invention can conveniently confirm whether the driving signals G1, G2, G3, G4...GN-1, GN are normal without destroying the display panel 100 by means of the configuration of the charge coupling unit 102 and the voltage detection unit 103, and the driving signals G1, G2, G3, G4...GN-1, GN are provided by the driving circuit 104. Therefore, the present invention can conveniently confirm whether the driving circuit 104 is normal without destroying the display panel 100, thereby maintaining the integrity of the display panel 100, and the testing process is convenient and fast.

[0065] In one embodiment of the present invention, the display panel 100 further has a driving element 105, and the driving element 105 is disposed in the peripheral area BA, but is not limited thereto. The voltage detection unit 103 can be disposed in the driving element 105; in another embodiment, the voltage detection unit 103 can also be disposed separately, and the present invention only takes the driving circuit 104 located on one side of the display area AA as an example for explanation. Of course, the driving circuit 104 can also be multi-sided driving, and the present invention is not limited thereto. In one embodiment, the driving element 105 includes a driving IC for driving the display panel 100 or an electrically connected driving IC and a flexible printed circuit (FPC) combination or a chip on film (COF).

[0066] In one embodiment, the charge coupling unit 102 is composed of a plurality of coupling capacitors. Figure 2 As shown, in the display panel 100, a signal detection line 106 is arranged across the signal lines GL1, GL2, GL3, GL4...GLN-1, GLN, and the signal lines GL1, GL2, GL3, GL4...GLN-1, GLN and the signal detection line 106 may be separated by an insulating layer and insulated from each other. Then, a coupling capacitor C1 is formed in the overlapping area between the signal detection line 106 and the signal line GL1, a coupling capacitor C2 is formed in the overlapping area between the signal detection line 106 and the signal line GL2..., a coupling capacitor CN is formed in the overlapping area between the signal detection line 106 and the signal line GLN, and the coupling capacitors C1, C2...CN together constitute a charge coupling unit 102.

[0067] In one embodiment, the driving circuit 104 is located in the peripheral area BA, the signal lines GL1, GL2, GL3, GL4...GLN-1, GLN include a portion located in the peripheral area BA and a portion located in the display area AA (not shown in the figure), and the signal detection line 106 is located in the peripheral area BA and crosses the portion of the signal lines GL1, GL2, GL3, GL4...GLN-1, GLN located in the peripheral area BA. In this way, there is no need for additional design of the lines in the display area AA, and the structure is simple.

[0068] In the present invention, coupling capacitors are used as an example for explanation, and other coupling methods may also be used. As long as the driving signals G1, G2, G3, G4...GN-1, GN on the signal lines GL1, GL2, GL3, GL4...GLN-1, GLN can be coupled into potential signals, the present invention can be implemented, but the present invention is not limited to this.

[0069] Combination Figures 1 to 4As shown, in a display frame FRAME1, FRAME2, a first time period T1 and a second time period T2 are included. The first time period T1 is a data refresh stage, which can be regarded as a driving cycle. The signal lines GL1, GL2, GL3, GL4...GLN-1, GLN sequentially provide driving signals G1, G2, G3, G4...GN-1, GN to the corresponding pixel units. Specifically, the first time period T1 includes a first driving time period t1, a second driving time period t2...Nth driving time period tN. In the first driving time period t1, the signal line GL1 provides a high potential driving signal G1 to the corresponding pixel unit (for example, the first row of pixel units), and a coupling voltage is formed on the coupling capacitor C1. At this time, a potential signal with a voltage of V1 is formed on the signal detection line 106; in the second driving time period t1, a high potential driving signal G1 is provided to the corresponding pixel unit (for example, the first row of pixel units). In the driving period t2, the signal line GL2 provides a high potential driving signal G2 to the corresponding pixel unit (for example, the pixel unit in the second row), and the driving signal G1 of the signal line GL1 is low potential, forming a coupling voltage on the coupling capacitor C2. At this time, a potential signal with a voltage of V2 is formed on the signal detection line 106... In the Nth driving period tN, the signal line GLN provides a high potential driving signal GN to the corresponding pixel unit (for example, the pixel unit in the Nth row), and the driving signals G1~GN-1 of the signal lines GL1~GLN-1 are low potential, forming a coupling voltage on the coupling capacitor CN. At this time, a potential signal with a voltage of VN is formed on the signal detection line 106. Therefore, in the first period T1, a step voltage V is formed on the signal detection line 106, and the step voltage V includes a plurality of step voltages V1, V2, V3, V4...VN. The voltage detection unit 103 can confirm each driving signal G1, G2, G3, G4...GN-1, GN according to the step voltage V. Figure 4 As shown, in each driving period, the step voltage remains unchanged, so that each step voltage presents a regular horizontal shape. In actual operation, this is not limited to this. In another embodiment, the step voltage V changes regularly linearly in each driving period, so that each step voltage presents a regular non-horizontal step shape.

[0070] Combination Figures 1 to 5As shown, the voltage detection unit 103 includes a judgment module 1031 and a result output unit 1032. After the charge coupling unit 102 couples the driving signals G1, G2, G3, G4...GN-1, GN into potential signals, the signal detection line 106 transmits the potential signals to the judgment module 1031, and the judgment module 1031 judges whether the step voltage V of the potential signal is within a preset voltage range. For example, it can be judged whether the driving signals G1, G2, G3, G4...GN-1, GN are in a normal working state by judging whether the maximum step voltage VN of the step voltage V is within a preset voltage range. If the maximum step voltage VN is within the preset voltage range, it means that the driving signals G1, G2, G3, G4...GN-1, GN are in a normal working state. If the maximum step voltage VN is not within the preset voltage range, it means that one or more working states of the driving signals G1, G2, G3, G4...GN-1, GN are abnormal and need further judgment. At the same time, the result output unit 1032 sends a result feedback signal to the driving element 105. In one embodiment, the aforementioned preset voltage range includes a plurality of voltage intervals, and each step voltage corresponds to a voltage interval, for example, the step voltage V1 corresponds to the first voltage interval, the step voltage V2 corresponds to the second voltage interval..., and the step voltage VN corresponds to the Nth voltage interval. At this time, it is necessary to judge each step voltage V1, V2, V3, V4...VN respectively, that is, to judge whether the step voltage V1 is in the first voltage interval, to judge whether the step voltage V2 is in the second voltage interval..., to judge whether the step voltage VN-1 is in the N-1th voltage interval, thereby judging which one or several driving signals among the driving signals G1, G2, G3, G4...GN-1, GN are in an abnormal working state, and at the same time, the result output unit 1032 sends a feedback signal to the driving element 105, and feeds back the driving signal line judged by the judgment module 1031 to have an abnormality.

[0071] For example Figures 1 to 5As shown, in the display panel 100 of the present invention, the driving element 105 further includes a charge release unit 1052, and the charge release unit 1052 is electrically connected to the charge coupling unit 102 through the signal detection line 106. As mentioned above, in the display panel 100, each display frame FRAME1, FRAME2 includes a first period T1 and a second period T2, the first period T1 is a data refresh stage, and the signal lines GL1, GL2, GL3, GL4...GLN-1, GLN sequentially provide driving signals G1, G2, G3, G4...GN-1, GN to the pixel units, and the second period T2 is a blanking stage, at which the charge release unit 1052 releases the coupled charges in the charge coupling unit 102, that is, the coupled charges in the charge coupling unit 102 are cleared, so that the next display frame can be detected again, and the display of the display panel 100 will not be affected. In one embodiment, it can be achieved by connecting the signal detection line 106 to the ground GND, but the present invention is not limited thereto.

[0072] When the display panel 100 of the present invention is applied to a terminal display device, the charge coupling effect of the driving signal output by the driving circuit 104 can be used to perform electrical monitoring during the data refresh period using the charge coupling unit 102 and the voltage detection unit 103, and the charges coupled in the circuit can be cleared for recovery during the blank time period, so as to electrically monitor the driving circuit 104 and make a judgment through the driving element 105. Since the driving element 105 can communicate with the terminal display device, such as outputting a feedback signal, the terminal display device can obtain the current status of the driving circuit 104 of the display panel 100.

[0073] like Figure 5 As shown, the driving element 105 has a first pin 1051, and the first pin 1051 is electrically connected to the charge coupling unit 102 and the voltage detection unit 103, so that the signal detection line 106 electrically connects the charge coupling unit 102 to the voltage detection unit 103 through the first pin 1051 in the driving element 105. In one embodiment, the driving element 105 further has a second pin 1053, and the second pin 1053 is electrically connected to the charge coupling unit 102 and the charge release unit 1052, so that the signal detection line 106 electrically connects the charge coupling unit 102 to the charge release unit 1052 through the second pin 1053 in the driving element 105.

[0074] Furthermore, a switch unit 1054 is further included between the first pin 1051 and the second pin 1053 and the voltage detection unit 103 and the charge release unit 1052. The switch unit 1054 is used to control the conduction and disconnection between the first pin 1051 and the voltage detection unit 103, and control the conduction and disconnection between the second pin 1053 and the voltage release unit 1052, so as to control whether to judge the coupling potential in the charge coupling unit 102 or clear the coupling charge in the charge coupling unit 102.

[0075] Specific, combined Figure 3-Figure 5 As shown, in a display frame FRAME, in a first time period T1, the switch unit 1054 makes the first pin 1051 and the voltage detection unit 103 connected, so that the voltage detection unit 103 and the charge coupling unit 102 are connected, and at the same time, the second pin 1053 and the charge release unit 102 are disconnected, so that the charge release unit 1052 and the charge coupling unit 102 are disconnected. At this time, the voltage detection unit 103 receives the potential signal coupled by the charge coupling unit 102 and makes a judgment on it. In a second time period T2, the switch unit 1054 makes the first pin 1051 and the voltage detection unit 103 disconnected, so that the voltage detection unit 103 and the charge coupling unit 102 are disconnected, and at the same time, the second pin 1053 and the charge release unit 102 are connected, so that the charge release unit 1052 and the charge coupling unit 102 are connected. At this time, the charge release unit 1052 clears the coupled charge in the charge coupling unit 102, and the step voltage V becomes a low potential, such as 0.

[0076] At Figure 5 In the embodiment, the signal detection line 106 is used to realize the connection between the charge coupling unit 102 and the voltage detection unit 103 and the charge release unit 1052 through different pins in the driving element 105. Since the voltage detection unit 103 and the charge release unit 1052 work in different time periods, respectively, in other embodiments, electrical connection can also be realized through the same pin. The present invention is not limited to this, that is, the aforementioned first pin 1051 and the second pin 1053 can be the same pin or different pins on the driving element 105.

[0077] Of course, the display panel also has other components, which will not be elaborated here.

[0078] At Figure 1-Figure 5In the embodiment shown, the driving circuit 104 is located at one side of the display area AA and sequentially provides driving signals G1, G2, G3, G4... GN-1, GN to all signal lines GL1, GL2, GL3, GL4... GLN-1, GLN. The signal detection line 106 is arranged across all signal lines GL1, GL2, GL3, GL4... GLN-1, GLN. Please refer to Figure 6 , Figure 6 FIG. 1 is a partial enlarged schematic diagram of a display device according to another embodiment of the present invention. Figure 6 As shown, the driving circuit 104 is located at two opposite sides of the display area AA, and the signal lines GL1, GL2, GL3, GL4...GLN-1, GLN are grouped. For example, the odd-numbered signal lines GL1, GL3...GLN-1 are the first group of signal lines GLA, and the even-numbered signal lines GL2, GL4...GLN are the second group of signal lines GLB, and the signal detection lines 106 are respectively provided corresponding to the first group of signal lines GLA and the second group of signal lines GLB. The charge coupling unit 102 includes a first coupling unit 1021 and a second coupling unit 1022, and the voltage detection unit 103 includes a first detection unit and a second detection unit, the first detection unit is electrically connected to the first coupling unit 1021, and the second detection unit is electrically connected to the second coupling unit 1022. The driving circuit 104 located at one side of the display area AA provides a driving signal to the first group of signal lines GLA, and the driving circuit 104 located at the other side of the display area AA provides a driving signal to the second group of signal lines GLB. The first coupling unit 1021 includes coupling capacitors C1, C3..., CN-1, which are formed between the corresponding signal detection line 106 and the first group of signal lines GLA, and the second coupling unit 1022 includes coupling capacitors C2, C4..., CN, which are formed between the corresponding signal detection line 106 and the second group of signal lines GLB. The first detection unit detects the driving signal of the first group of signal lines GLA, and the second detection unit detects the driving signal of the second group of signal lines GLB, so as to respectively confirm whether the driving circuits located on both sides of the display area AA are normal. In other embodiments, the signal detection line 106 can also be set only for the first group of signal lines GLA, so that the voltage detection unit 103 only detects the driving signal of the first group of signal lines GLA. Of course, the signal detection line 106 can also be set only for the second group of signal lines GLB, so that the voltage detection unit 103 only detects the driving signal of the second group of signal lines GLB, and the present invention is not limited to this.

[0079] In another embodiment, other grouping methods may also be used, for example, the signal lines GL1-GLk are the first group of signal lines, and the signal lines GLk+1-GLN are the second group of signal lines, 1<k<N. The driving circuit 104 provides driving signals to the first group of signal lines and the second group of signal lines. Signal detection lines 106 are respectively set corresponding to the first group of signal lines and the second group of signal lines. The charge coupling unit 102 includes a first coupling unit and a second coupling unit. The first coupling unit includes coupling capacitors C1, C2..., Ck, which are formed between the corresponding signal detection line 106 and the first group of signal lines, and the second coupling unit includes coupling capacitors Ck+1, Ck+2..., CN, which are formed between the corresponding signal detection line 106 and the second group of signal lines. The voltage detection unit 103 detects the driving signals of the first group of signal lines and the second group of signal lines to confirm whether the driving circuit 104 is normal. In other embodiments, the signal detection line 106 may be set only for the first group of signal lines, so that the voltage detection unit 103 only detects the driving signals of the first group of signal lines. Of course, the signal detection line 106 may be provided only for the second group of signal lines, so that the voltage detection unit 103 only detects the driving signal of the second group of signal lines, but the present invention is not limited thereto.

[0080] Of course, the signal lines GL1, GL2, GL3, GL4, ... GLN-1, GLN may also be divided into more groups, for example Figure 7 The three groups shown. The signal lines GL1-GLk are the first group of signal lines, the signal lines GLk+1-GLm are the second group of signal lines, and the signal lines GLm+1-GLN are the third group of signal lines. Signal detection lines 106 are respectively set corresponding to the first group of signal lines and the third group of signal lines. The charge coupling unit 102 includes a first coupling unit and a second coupling unit, and the voltage detection unit 103 includes a first detection unit and a second detection unit. The first detection unit is electrically connected to the first coupling unit, and the second detection unit is electrically connected to the second coupling unit. The first charge coupling unit is formed between the corresponding signal detection line 106 and the first group of signal lines, and the second charge coupling unit is formed between the corresponding signal detection line 106 and the third group of signal lines. The voltage detection unit 103 detects the driving signals of the first group of signal lines and the third group of signal lines. The same detection unit can be used for detection, or the first voltage detection unit can be used to detect the first group of signal lines, and the second voltage detection unit can be used to detect the third group of signal lines. Of course, other combinations can also be used for detection, and the present invention is not limited to this. In another embodiment, the signal detection line 106 may be provided for the second group of signal lines, and the voltage detection unit 103 may also detect the driving signal of the second group of signal lines, but the present invention is not limited thereto. Figure 7In the embodiment, the two signal detection lines 106 are connected and can be detected by the same detection unit, but the present invention is not limited thereto. For example, the signal detection lines 106 are not connected to each other and can be detected by different detection units respectively.

[0081] Alternatively, in another embodiment, a certain number of signal lines can be selected as a group, or only signal lines that are prone to abnormal status can be detected after summarizing and analyzing previous detection results, so that the signal detection line 106 is only set across some of the signal lines GL1, GL2, GL3, GL4...GLN-1, GLN, for example, across the signal lines GLP, GLP+1...GLQ, P≥1, Q≤N, so that the voltage detection unit 103 only detects the driving signals of some of the signal lines GLP, GLP+1...GLQ, but the present invention is not limited to this.

[0082] The present invention further provides a method for detecting a display panel, and the method is used to detect the display panel 100 as described above. Figure 1-Figure 6 As shown, the detection method of the present invention comprises:

[0083] Step 1: the voltage detection unit 103 obtains a potential signal of the charge coupled unit 102 in the display panel 100;

[0084] Step 2: determining whether the potential signal of the charge coupled unit 102 is within a preset voltage range.

[0085] Specifically, in the display panel 100, after the charge coupling unit 102 couples the driving signals G1, G2, G3, G4...GN-1, GN into potential signals, the signal detection line 106 transmits the potential signals to the judgment module 1031, and the judgment module 1031 judges whether the step voltage V of the potential signal is within a preset voltage range. For example, it is possible to judge whether the driving signals G1, G2, G3, G4...GN-1, GN are in a normal working state by judging whether the maximum step voltage VN of the step voltage V is within a preset voltage range. If the maximum step voltage VN is within the preset voltage range, it means that the driving signals G1, G2, G3, G4...GN-1, GN are in a normal working state. If the maximum step voltage VN is not within the preset voltage range, it means that one or more working states of the driving signals G1, G2, G3, G4...GN-1, GN are abnormal and need further judgment. At the same time, the result output unit 1032 sends a result feedback signal to the driving element 105. In one embodiment, the aforementioned preset voltage range includes a plurality of voltage intervals, and each step voltage corresponds to a voltage interval, for example, the step voltage V1 corresponds to the first voltage interval, the step voltage V2 corresponds to the second voltage interval..., and the step voltage VN corresponds to the Nth voltage interval. At this time, it is necessary to judge each step voltage V1, V2, V3, V4...VN respectively, that is, to judge whether the step voltage V1 is in the first voltage interval, to judge whether the step voltage V2 is in the second voltage interval..., to judge whether the step voltage VN-1 is in the N-1th voltage interval, thereby judging which one or several driving signals among the driving signals G1, G2, G3, G4...GN-1, GN are in an abnormal working state, and at the same time, the result output unit 1032 sends a feedback signal to the driving element 105, and feeds back the driving signal line judged by the judgment module 1031 to have an abnormality.

[0086] The charge release unit 1052 is electrically connected to the charge coupling unit 102 through the signal detection line 106. In the display panel 100, each display frame FRAME1, FRAME2 includes a first period T1 and a second period T2. The first period T1 is a data refresh phase. In the first period T1, the signal lines GL1, GL2, GL3, GL4...GLN-1, GLN sequentially provide driving signals G1, G2, G3, G4...GN-1, GN to the pixel units. The second period T2 is a blanking phase. At this time, the charge release unit 1052 clears the charges coupled in the charge coupling unit 102 so that the next display frame can be detected again without affecting the display of the display panel 100. In one embodiment, this can be achieved by connecting the signal detection line 106 to the ground GND, but the present invention is not limited thereto.

[0087] The present invention further provides a display device, comprising any one of the display panels described above.

[0088] The present invention also provides a storage medium for storing a computer program, wherein the computer program is used to execute any one of the detection methods described above.

[0089] According to an embodiment of the present invention, a signal detection line is set across the signal line to form a charge coupled unit. The charge coupled unit transmits the potential signal coupled from the signal line to the voltage detection unit to determine whether the potential signal is within a preset voltage range for the normal operation of the driving signal. The total step voltage can be judged, and the step voltage of each step in the step voltage can be judged separately, thereby simplifying the detection process, improving the detection efficiency, and ensuring the integrity of the product during the detection process.

[0090] Of course, the present invention may have many other embodiments. Without departing from the spirit and essence of the present invention, those skilled in the art may make various corresponding changes and modifications based on the present invention, but these corresponding changes and modifications should all fall within the scope of protection of the claims attached to the present invention.

Claims

1. A display panel, characterized in that: include: A substrate having a display area; A plurality of pixel units are arranged in the display area; A plurality of signal lines, electrically connected to the plurality of pixel units, to transmit driving signals to the plurality of pixel units; a charge coupling unit, corresponding to at least part of the plurality of signal lines, and configured to couple the drive signal into a potential signal; a voltage detection unit, electrically connected to the charge coupled unit, the voltage detection unit being used to receive the potential signal and confirm the driving signal; in The charge coupling unit is arranged between at least part of the plurality of signal lines and the voltage detection unit, the driving signal is a timing pulse signal, and the potential signal is a step voltage.

2. The display panel according to claim 1, wherein: The voltage detection unit comprises: A judging module is used to judge whether the step voltage is within a preset voltage range.

3. The display panel according to claim 2, wherein: The voltage detection unit further comprises: A result output unit is used to output a feedback signal when the step voltage is not within the preset voltage range.

4. The display panel according to claim 2, wherein: The step voltage includes a plurality of step voltages, the preset voltage range includes a plurality of voltage intervals, and each of the step voltages corresponds to one of the voltage intervals.

5. The display panel according to claim 1, wherein: The plurality of signal lines include a first group of signal lines and a second group of signal lines, the voltage detection unit includes a first detection unit, the charge coupling unit includes a first coupling unit, the first detection unit is electrically connected to the first coupling unit, and the first coupling unit corresponds to the first group of signal lines.

6. The display panel according to claim 5, wherein: The plurality of signal lines further include a third group of signal lines, the voltage detection unit further includes a second detection unit, the charge coupling unit includes a second coupling unit, the second detection unit is electrically connected to the second coupling unit, and the second coupling unit corresponds to the third group of signal lines.

7. The display panel according to claim 1, wherein: The display panel further comprises: A driving circuit is electrically connected to the plurality of signal lines and is used for sequentially providing the timing pulse signals to the plurality of signal lines in a driving cycle.

8. The display panel according to claim 1, wherein: The display panel also has a peripheral area, and the peripheral area is at least located on one side of the display area. The display panel further includes: A driving element is located in the peripheral area, and the voltage detection unit is disposed on the driving element.

9. The display panel according to claim 8, wherein: The driving element includes a first pin, and the first pin is electrically connected to the charge coupling unit and the voltage detection unit respectively.

10. The display panel according to claim 9, wherein: The driving element further comprises: A charge release unit is electrically connected to the charge coupling unit.

11. The display panel according to claim 10, wherein: The driving element includes a second pin, and the second pin is electrically connected to the charge coupling unit and the charge releasing unit respectively.

12. The display panel according to claim 11, wherein: The first pin and the second pin are the same pin or different pins.

13. The display panel according to claim 10, wherein: A display frame includes a first period and a second period. In the first period, the voltage detection unit confirms the driving signal. In the second period, the charge release unit releases the coupled charges in the charge coupling unit.

14. The display panel according to claim 13, wherein: The first period is a data refresh period, and the second period is a blank time period.

15. The display panel according to claim 13, wherein: The driving element further comprises: a switch unit, the switch unit is arranged between the charge coupling unit and the voltage detection unit and the charge release unit; In the first time period, the switch unit connects the voltage detection unit and the charge coupling unit, and disconnects the charge release unit and the charge coupling unit; In the second period, the switch unit disconnects the voltage detection unit from the charge coupling unit and connects the charge release unit to the charge coupling unit.

16. The display panel according to claim 1, wherein: The display panel further comprises: a signal detection line, at least part of which overlaps with the plurality of signal lines; The charge coupling unit is disposed between the overlapping signal lines and the signal detection line.

17. A method for detecting a display panel, characterized in that: The method is used to detect the display panel according to claim 1, and the method comprises: acquiring the potential signal of the charge coupled unit; and Determine whether the potential signal is within a preset voltage range.

18. The detection method according to claim 17, characterized in that: The potential signal is a step voltage, and the method further comprises: When the step voltage is not within the preset voltage range, a feedback signal is output.

19. The detection method according to claim 17, characterized in that: The method further includes releasing coupled charges in the charge coupled unit.

20. A display device, characterized in that: include: A display panel as claimed in any one of claims 1 to 16.

21. A storage medium for storing a computer program, characterized in that: The computer program is used to execute any one of the detection methods according to claims 17-19.

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