Display panel, display device and display panel conductive adhesive coating detection method

Abstract

The present invention provides a display panel, a display device and a display panel conductive glue coating detection method, wherein the display panel includes a first substrate and a second substrate arranged opposite to each other, the first substrate has a first area and a step area, and the step area does not overlap with the orthographic projection of the second substrate; at least two conductive connection terminals and a test terminal are arranged in the step area, and the test terminal is arranged between at least two conductive connection terminals; the conductive connection terminal includes a plurality of conductive blocks, each conductive block is electrically connected to the test terminal through at least one conductive line, and the coating accuracy of the conductive glue is judged by the different conditions of the conductive glue covering the conductive block; or, a plurality of first detection lines are arranged on the display panel, along the first direction, the first detection lines are at least located on both sides of the conductive connection terminal, the first detection lines are electrically connected to the test terminal, and the coating accuracy of the conductive glue is judged by whether the conductive glue covers the first detection lines. The detection method of the present invention is simple and feasible, and has high detection accuracy.

Description

Technical Field

[0001] The present invention relates to the field of display technology, and in particular to a display panel, a display device and a method for detecting the coating of conductive adhesive on a display panel. Background Art

[0002] When the display panel surface is rubbed in different usage environments, an electrostatic field will accumulate on the display panel surface. The accumulated static electricity will cause electrostatic damage to the display panel, and in severe cases, damage to the circuits and devices inside the display panel, affecting the display. Therefore, a shielding electrode is usually set on the surface of the upper substrate of the display panel, and the shielding electrode is electrically connected to the lower substrate through a conductive material, and then connected to the ground terminal. When the display panel is instantly subjected to a large static electricity effect, the static electricity can be conducted away through the lower substrate through the conductive material.

[0003] At present, in order to achieve full screen, the borders of display screens are getting narrower and narrower. The realization of extremely narrow borders places strict requirements on the coating accuracy of conductive glue. The existing conductive glue accuracy detection mainly relies on visual inspection by personnel, but as the display panel has higher requirements for the coating accuracy of conductive glue, visual inspection by personnel is becoming increasingly difficult. There are problems such as missed detection or wrong judgment, which causes the conductive glue to be offset, resulting in the inability to dissipate static electricity on the display panel, thereby affecting the display. Therefore, it is urgent to propose a conductive glue coating detection method with simple detection method and high detection accuracy. Summary of the invention

[0004] In view of this, the embodiments of the present invention provide a display panel, a display device and a display panel conductive adhesive coating detection method as described below, wherein the detection method is simple and feasible and has high detection accuracy.

[0005] In a first aspect, the present invention provides a display panel, the display panel comprising:

[0006] A first substrate and a second substrate are arranged opposite to each other, wherein the first substrate has a first area and a step area, and in a direction perpendicular to the display panel, a projection of the step area and the second substrate does not overlap;

[0007] At least two conductive connection terminals, the conductive connection terminals are located in the step area;

[0008] A test terminal, which is also located in the step area and between at least two conductive connection terminals;

[0009] The conductive connection terminal includes a plurality of conductive blocks, each of which is electrically connected to the test terminal through at least one conductive wire; a conductive glue at least partially covers the conductive blocks;

[0010] Alternatively, the display panel has multiple first detection lines, along the first direction, the first detection lines are located at least on both sides of the conductive connection terminal, the first detection lines are electrically connected to the test terminal, the first area is set to point to the step area as the second direction, the first direction intersects with the second direction, and the conductive glue covers the conductive connection terminal.

[0011] In a second aspect, the present invention further provides a display device, which includes the display panel.

[0012] In a third aspect, the present invention further provides a display panel conductive adhesive coating detection method, which is applied to the display panel provided in the first aspect;

[0013] The display panel comprises a first substrate and a second substrate arranged opposite to each other, wherein the first substrate has a first area and a step area, and in a direction perpendicular to the display panel, the step area and the projection of the second substrate do not overlap; at least two conductive connection terminals are arranged in the step area, and a test terminal is arranged between the at least two conductive connection terminals;

[0014] Detection method 1:

[0015] The conductive connection terminal is provided with a main conductive block and a guide conductive block, and the guide conductive blocks are provided at least on two sides of the main conductive block along the first direction; the first area is set to point to the step area as the second direction, and the first direction intersects with the second direction;

[0016] The main conductive block and the auxiliary conductive block are respectively electrically connected to the test terminal through conductive wires;

[0017] When the conductive glue covers the main conductive block and all the auxiliary conductive blocks, it is judged that the display panel is well coated with the conductive glue; when the conductive glue covers the main conductive block and only covers part of the auxiliary conductive block, it is judged that the display panel is poorly coated with the conductive glue.

[0018] Detection method 2:

[0019] The conductive connection terminal is provided to include a plurality of conductive blocks, each conductive block being electrically connected to the test terminal via at least one conductive line;

[0020] S1, calculating the projection area s1 of the plurality of conductive blocks included in the conductive connection terminal on the display panel;

[0021] S2, detecting the conductive blocks covered by the conductive adhesive, and calculating the projection area s2 of the conductive blocks covered by the conductive adhesive on the display panel;

[0022] S3. Establish area ratio standard M;

[0023] S4. When s2 / s1≥M, it is determined that the display panel is well coated with the conductive adhesive; when s2 / s1<M, it is determined that the display panel is poorly coated with the conductive adhesive.

[0024] Detection method three:

[0025] A first detection line is arranged at least on both sides of the conductive connection terminal along the first direction, and the first detection line is electrically connected to the test terminal. The first area is set to point to the step area as the second direction, and the first direction intersects the second direction;

[0026] When the conductive adhesive does not cover the first detection line, it is determined that the display panel is well coated with the conductive adhesive; when the conductive adhesive covers the first detection line, it is determined that the display panel is poorly coated with the conductive adhesive.

[0027] The display panel, display device and display panel conductive glue coating detection method provided by the present invention achieve the following beneficial effects: by setting the conductive connection terminal to include a plurality of conductive blocks, the conductive blocks are electrically connected to the test terminals respectively, or by setting the first detection line on both sides of the conductive connection terminal along the first direction, the first detection line is electrically connected to the test terminal, wherein the conductive connection terminal, the detection line and the test terminal can all be realized by using the metal film layer and the input and output signal terminals on the display panel, so there is no need to add additional film layers and processes, and the implementation method is simple and easy; and according to the design of the display panel, different conductive glue coating accuracy detection methods are implemented, such as by setting the conductive connection terminal to include a plurality of conductive blocks, the implementation method of determining the conductive glue coating accuracy can be based on the distribution form of the conductive blocks and the situation that the conductive glue covers the conductive blocks, or by setting the first detection line on both sides of the conductive connection terminal along the first direction, the implementation method of determining the conductive glue coating accuracy can be based on whether the conductive glue covers the first detection line; the operation method is simple and has high detection accuracy, which can meet the requirements of different conductive glue coating accuracy standards. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0029] Figure 1 A partial top view schematic diagram of a display panel provided by the present invention;

[0030] Figure 2 A partial top view schematic diagram of another display panel provided by the present invention;

[0031] Figure 3 A partial top view schematic diagram of another display panel provided by the present invention;

[0032] Figure 4 for Figure 3 A schematic diagram of the arrangement of conductive blocks in the S region of the display panel;

[0033] Figure 5 A partial top view schematic diagram of another display panel provided by the present invention;

[0034] Figure 6 A partial top view schematic diagram of another display panel provided by the present invention;

[0035] Figure 7 A partial top view schematic diagram of another display panel provided by the present invention;

[0036] Figure 8 A partial top view schematic diagram of another display panel provided by the present invention;

[0037] Fig. 9 A schematic top view of a display device provided by the present invention;

[0038] Fig.10 A partial top view schematic diagram of another display panel provided by the present invention;

[0039] Fig.11 A partial top view schematic diagram of another display panel provided by the present invention;

[0040] Fig.12 A partial top view schematic diagram of another display panel provided by the present invention;

[0041] Fig.13 A partial top view schematic diagram of another display panel provided by the present invention;

[0042] Fig.14 A partial top view schematic diagram of another display panel provided by the present invention;

[0043] Fig.15 A partial top view schematic diagram of another display panel provided by the present invention;

[0044] Fig.16 A partial top view schematic diagram of another display panel provided by the present invention;

[0045] Fig.17 A partial top view schematic diagram of another display panel provided by the present invention;

[0046] Fig.18 A partial top view schematic diagram of another display panel provided by the present invention;

[0047] Fig.19 A partial top view schematic diagram of another display panel provided by the present invention;

[0048] Fig. 20 A partial top view schematic diagram of another display panel provided by the present invention;

[0049] Fig.21A partial top view schematic diagram of another display panel provided by the present invention;

[0050] Fig. 22 A partial top view schematic diagram of another display panel provided by the present invention;

[0051] Fig.23 A partial top view schematic diagram of another display panel provided by the present invention;

[0052] Fig.24 A partial top view schematic diagram of another display panel provided by the present invention. DETAILED DESCRIPTION

[0053] The following will be combined with the accompanying drawings in the present invention to clearly and completely describe the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0054] Please refer to Figures 1 to 3 , Figure 1 A partial top view schematic diagram of a display panel provided by the present invention; Figure 2 A partial top view schematic diagram of another display panel provided by the present invention, Figure 3A partial top view schematic diagram of another display panel provided by the present invention; the display panel 1 provided by the present invention comprises a first substrate 11 and a second substrate 12 arranged opposite to each other, the first substrate 11 is an array substrate, having a first area 111 and a step area 112, in the direction perpendicular to the display panel 1, the projections of the first area 111 and the second substrate 12 overlap, the step area 112 does not overlap with the projection of the second substrate 12, and the step area 112 is used to place the binding terminals of the chip IC and the flexible circuit board (not shown in the figure) connected to the driving display panel. At least two conductive connection terminals P are located in the step area 112, a plurality of test terminals T are located in the step area 112, and a plurality of test terminals T are located between at least two conductive connection terminals P; the conductive connection terminal P comprises a plurality of conductive blocks P0, each conductive block P0 is electrically connected to a different test terminal T through at least one conductive line D; a shielding electrode (not shown in the figure) is arranged on the side of the second substrate 12 facing away from the first substrate 11, and the conductive glue G, generally silver glue, partially covers the shielding electrode arranged on the surface of the second substrate 12, and at least partially covers the conductive block P0. The electrostatic charge accumulated on the surface of the display panel 1 can be introduced into the conductive block P0 through the shielding electrode, and then connected to the ground terminal through the conductive block P0. Then, at least part of the conductive wire D can be reused as an electrostatic conduction wire when the conductive glue G coating accuracy test is not performed. Optionally, the display panel 1 includes a binding terminal of a flexible circuit board, and part of the binding terminals of the flexible circuit board can be reused as a test terminal T. When the conductive glue G coating accuracy is tested, the conductive wire D is used as a test wire. At other times, the conductive wire D can conduct the charge on the conductive block P0 to the ground terminal on the flexible circuit board, thereby releasing the static electricity on the display panel 1.

[0055] Optional, please continue to refer to Figure 1 The conductive connection terminal P includes a main conductive block P1 and an auxiliary conductive block P2. The direction in which the first area 111 points to the step area 112 is set as the second direction Y. The first direction X and the second direction Y intersect, then the auxiliary conductive block P2 is at least located on both sides of the main conductive block P1, that is, the main conductive block P1 is located in the middle, and the auxiliary conductive block P2 at least partially surrounds the main conductive block P1. Optionally, the positive projection area of ​​the main conductive block P1 on the display panel 1 can be set to be larger than the positive projection area of ​​the auxiliary conductive block P2 on the display panel 1. Then the main conductive block P1 mainly plays a role in conducting electrostatic charges, and the auxiliary conductive block P2 is used to determine the specific position of the conductive glue G. The main conductive block P1 and the auxiliary conductive block P2 are electrically connected to the test terminal T through the conductive wire D respectively.

[0056] Please refer to Figures 10-12 , Fig.10 A partial top view of another display panel provided by the present invention is shown. Fig.11 A partial top view schematic diagram of another display panel provided by the present invention is shown in FIG. Fig.12 A partial top view schematic diagram of another display panel provided by the present invention; based on Figure 1 The present invention provides a method for detecting the coating accuracy of conductive glue on a display panel. When the conductive glue G is coated on the display panel 1, the conductive glue G partially covers the shielding electrode on the surface of the second substrate 12 and partially covers the conductive connection terminal P. When the conductive glue G covers the main conductive block P1 and the auxiliary conductive blocks P2 on both sides, as shown in FIG. Fig.10 , the test terminal T can detect the signals connected to the main conductive block P1 and the auxiliary conductive blocks P2 located on both sides of the main conductive block P1, then it can be judged that the conductive glue G of the display panel 1 is well coated; when the conductive glue G covers the main conductive block P2 and part of the auxiliary conductive block P2, such as Fig.11 , when the conductive glue G only covers the main conductive block P1 and the auxiliary conductive block P2 located on the left side of the main conductive block P1, the conductive glue G is offset to the left in the first direction X, and the positive projection area of ​​the conductive glue G on the main conductive block P1 is reduced. The test terminal T can only detect the signals connected to the main conductive block P1 and the auxiliary conductive block P2 located on the left side of the main conductive block P1, respectively. It is judged that the conductive glue G of the display panel 1 is poorly coated. Similarly, if Fig.12 , when the conductive glue G only covers the main conductive block P1 and the auxiliary conductive block P2 located on the right side of the main conductive block P1, the conductive glue G is offset to the right in the first direction X, and the positive projection area of ​​the conductive glue G on the main conductive block P1 is also reduced. The test terminal T can only detect the signals respectively connected to the main conductive block P1 and the auxiliary conductive block P2 located on the right side of the main conductive block P1, then it is judged that the display panel 1 also has poor coating of the conductive glue G.

[0057] The above method only needs to divide the conductive connection terminal P of the display panel 1 into a main conductive block P1 and an auxiliary conductive block P2, and connect them to different test terminals T through conductive wires D respectively. The conductive wires D can reuse the metal film layer of the display panel 1. The display panel 1 is simple in design and feasible in process. No additional film layers and processes are required, and no related costs need to be increased. The specific coating accuracy of the conductive glue G can be judged by the different situations in which the conductive glue G covers the main conductive block P1 and the auxiliary conductive block P2. The operation is simple, and no additional testing equipment is required, and no cost is increased. The detection method has high accuracy, which is convenient for accurate judgment and classification of the display panel 1, as well as screening of defective products.

[0058] Optional, please refer to Figure 2 The conductive connection terminal P includes a main conductive block P1 and an auxiliary conductive block P2, wherein the auxiliary conductive block P2 is not only located on both sides of the main conductive block P1 along the first direction X, but also located on a side of the main conductive block P1 away from the first area 111, that is, located on the lower side of the main conductive block P1.

[0059] Please refer to Figures 13 to 18 , Fig.13 A partial top view schematic diagram of another display panel provided by the present invention is shown in FIG. Fig.14 FIG. 15 is a partial top view schematic diagram of another display panel provided by the present invention. FIG. 16 is a partial top view schematic diagram of another display panel provided by the present invention. Fig.16 A partial top view of another display panel provided by the present invention is shown. Fig.17 A partial top view schematic diagram of another display panel provided by the present invention is shown in FIG. Fig.18 A partial top view schematic diagram of another display panel provided by the present invention; based on Figure 2 The present invention provides another display panel conductive glue coating accuracy detection method. When the conductive glue G is applied to the display panel 1, the conductive glue G partially covers the shielding electrode on the surface of the second substrate 12 and partially covers the conductive connection terminal P. When the conductive glue G covers the main conductive block P1 and the auxiliary conductive blocks P2 located on both sides and the lower side of the main conductive block P1, as shown in FIG. Fig.13 , the test terminal T can detect four signals connected to the main conductive block P1 and the auxiliary conductive blocks P2 located on both sides and the bottom of the main conductive block P1, respectively, then it can be judged that the conductive glue G of the display panel 1 is well coated; when the conductive glue G covers the main conductive block P2 and part of the auxiliary conductive block P2, such as Fig.14 , when the conductive glue G only covers the main conductive block P1 and the auxiliary conductive block P2 located on the left and lower side of the main conductive block P1, the conductive glue G is located at a lower position than Fig.13 There is a deviation toward the left side in the first direction X, the orthographic projection area of ​​the conductive glue G on the main conductive block P1 is reduced, and the test terminal T can only detect three signals connected to the main conductive block P1 and the auxiliary conductive block P2 located on the left and lower sides of the main conductive block P1, respectively. It is judged that the coating of the conductive glue G of the display panel 1 is poor, or the coating accuracy of the conductive glue G of the display panel 1 is judged to be Class B; similarly, if Fig.15 , when the conductive glue G only covers the main conductive block P1 and the auxiliary conductive block P2 located on the right and lower side of the main conductive block P1, the conductive glue G is located at a lower position than Fig.13 There is a deviation toward the right side in the first direction X, and the orthographic projection area of ​​the conductive glue G on the main conductive block P1 is also reduced. The test terminal T can only detect three signals connected to the main conductive block P1 and the auxiliary conductive block P2 located on the right and lower sides of the main conductive block P1, respectively. It is judged that the display panel 1 also has poor coating of the conductive glue G, or the coating accuracy of the conductive glue G of the display panel 1 is judged to be Class B; if Fig.16 When the conductive glue G only covers the main conductive block P1 and the auxiliary conductive blocks P2 located on both sides of the main conductive block P1, the conductive glue G is located at a relatively Fig.13 If a deviation from the second direction Y occurs, that is, an upward deviation, and the test terminal T can only detect three signals connected to the main conductive block P1 and the auxiliary conductive blocks P2 located on both sides of the main conductive block P1, it is judged that the coating of the conductive glue G of the display panel 1 is poor, or the coating accuracy of the conductive glue G of the display panel 1 is judged to be Class B; Fig.17When the conductive glue G only covers the main conductive block P1 and the auxiliary conductive block P2 located on the left side of the main conductive block P1, the conductive glue G is located at a relatively Fig.13 If an upper left offset occurs, the test terminal T can only detect two signals connected to the main conductive block P1 and the auxiliary conductive block P2 located on the left side of the main conductive block P1, then it is judged that the coating of the conductive glue G of the display panel 1 is poor, or the coating accuracy of the conductive glue G of the display panel 1 is judged to be Class C; Fig.18 When the conductive glue G only covers the main conductive block P1 and the auxiliary conductive block P2 located on the right side of the main conductive block P1, the conductive glue G is located at a relatively Fig.13 If an upper right offset occurs, the test terminal T can only detect two signals connected to the main conductive block P1 and the auxiliary conductive block P2 located on the right side of the main conductive block P1, then it is judged that the conductive glue G of the display panel 1 is poorly coated, or the coating accuracy of the conductive glue G of the display panel 1 is Class C.

[0060] In the above method, the conductive connection terminal P of the display panel 1 is divided into a main conductive block P1 and a guide conductive block P2, and the guide conductive block P2 is located on both sides and the lower side of the main conductive block P1, and the conductive block P0 is connected to different test terminals T through conductive wires D, thereby increasing the coating accuracy detection of the conductive glue G in the second direction Y, and increasing the Figures 16 to 18 The detection of the deviation direction shown, that is, the detection of the upward deviation, upper left deviation and upper right deviation of the conductive glue G position is added. Optionally, according to the specific bias situation of the conductive glue G coating position, the display panel 1 is screened into more refined types, such as Class B and Class C. The display panel 1 can be screened and classified more finely, so as to perform differentiated processing on the display panel 1 with conductive glue G with different coating precisions, thereby meeting the requirements for different conductive glue G coating precision standards.

[0061] Optional, please refer to Figure 3 and Figure 4 , Figure 4 for Figure 3 A schematic diagram of the arrangement of conductive blocks in the display panel S area; the conductive connection terminal P includes a plurality of identical conductive blocks P0, each conductive block P0 is electrically connected to at least one conductive wire D, and the conductive wires D are electrically connected to different test terminals T. Figure 3 As shown, a plurality of identical conductive blocks P0 are arranged in an array, or along the first direction X and / or the second direction Y, two adjacent identical conductive blocks P0 are arranged alternately, such as Figure 4As shown, multiple identical conductive blocks P0 may be regular hexagons, and along the first direction X and the second direction Y, two adjacent conductive blocks P0 are arranged alternately, so that the gap between every two adjacent conductive blocks P0 is consistent, so that the space of the step area 112 can be fully utilized to ensure that there are no blind spots in the detection; optionally, the present invention does not limit the specific shape of the conductive block P0, such as it can be a regular polygon, and does not limit the specific size of the conductive block P0. For example, it can be set that the conductive block P0 located in the middle area has a slightly larger area, and the conductive block P0 located in the edge area has a slightly smaller area, so as to facilitate the refined detection of the offset of the conductive glue G.

[0062] Please refer to Figures 19 to 21 , Fig.19 A partial top view schematic diagram of another display panel provided by the present invention is shown in FIG. Fig. 20 A partial top view of another display panel provided by the present invention is shown. Fig.21 A partial top view schematic diagram of another display panel provided by the present invention; based on Figure 3 The present invention provides another method for detecting the coating accuracy of conductive adhesive on a display panel:

[0063] S1, calculating the projection area s1 of the plurality of conductive blocks P0 included in the conductive connection terminal P on the display panel 1;

[0064] S2, detecting the conductive block P0 covered by the conductive glue G, and calculating the projection area s2 of the conductive block P0 covered by the conductive glue on the display panel 1;

[0065] S3. Establish area ratio standard M;

[0066] S4. When s2 / s1≥M, it is determined that the conductive adhesive G of the display panel 1 is well coated; when s2 / s1<M, it is determined that the conductive adhesive G of the display panel 1 is poorly coated.

[0067] Based on the above method, reference Fig.19 , the display panel 1 includes 9 conductive blocks P0, assuming that the projection area of ​​1 conductive block P0 on the display panel 1 is s0, then the projection area s1 of the 9 conductive blocks P0 on the display panel 1 is calculated as s1=9×s0; the test terminal T detects seven signals of the 7 conductive blocks P0 covered by the conductive glue G respectively, then the specific conductive block P0 is determined according to the detected signal, and then the projection area s2 of these conductive blocks P0 on the display panel 1 is calculated as s2=7s0, and the yield standard, that is, the area ratio standard M is set, such as M=5 / 9, then s2 / s1=7 / 9>M=5 / 9, then it is determined Fig.19 The display panel 1 in the conductive adhesive G is well coated; Fig. 20When the test terminal T detects four signals of the four conductive blocks P0 covered by the conductive glue G, the specific conductive block P0 is determined according to the detected signals, and then the projection area s2 of these conductive blocks P0 on the display panel 1 is calculated as s2 = 4s0, then s2 / s1 = 4 / 9 < M = 5 / 9, then it is determined Fig.19 The conductive adhesive G of the display panel 1 is poorly coated; Fig.21 When the test terminal T detects two signals of the two conductive blocks P0 covered by the conductive glue G, the specific conductive block P0 is determined according to the detected signals, and then the projection area s2 of these conductive blocks P0 on the display panel 1 is calculated as s2 = 2s0, then s2 / s1 = 2 / 9 < M = 5 / 9, then it is determined Fig.19 The conductive adhesive G on the display panel 1 is poorly coated.

[0068] Optionally, different area ratio standards may be set according to the specific number of conductive blocks P0, such as M1, M2, M3, etc., M1 = 7 / 9, M2 = 5 / 9, M3 = 3 / 9, when s2 / s1 ≥ M1, the display panel is judged to have a conductive adhesive coating accuracy of Class A, when M1>s2 / s1≥M2, the display panel is judged to have a conductive adhesive coating accuracy of Class B, when M2>s2 / s1≥M3, the display panel is judged to have a conductive adhesive coating accuracy of Class C, when s2 / s1<M3, the display panel is judged to have a conductive adhesive coating accuracy of Class D, then Fig.19 The conductive adhesive G coating accuracy of the display panel 1 shown is Class A. Fig. 20 The conductive adhesive G coating accuracy of the display panel 1 shown is Class C. Fig.21 The conductive adhesive G coating accuracy of the display panel 1 shown is Class D.

[0069] In the above method, the conductive connection terminal P of the display panel 1 is set to include multiple conductive blocks P0, and the conductive blocks P0 are respectively connected to different test terminals T through conductive wires D, thereby increasing the detection of the coating accuracy of the conductive glue G in various directions. Optionally, different discrimination criteria can be set according to the specific number and arrangement of the conductive blocks P0, and the display panel 1 can be screened into more refined types according to the specific bias conditions of the coating positions of the conductive glue G. The display panel 1 can be screened and classified more finely, so as to perform differentiated processing on the display panel 1 with the conductive glue G with different coating accuracy, thereby meeting the requirements for different conductive glue G coating accuracy standards.

[0070] Optional, please refer to Figure 5 , Figure 5A partial top view schematic diagram of another display panel provided by the present invention; the conductive connection terminal P includes a plurality of conductive blocks P0, and the number of the conductive blocks P0 along the first direction X is greater than the number of the conductive blocks P0 along the second direction Y; because the conductive glue G is more likely to be positionally offset in the first direction X than in the second direction Y, the number of the conductive blocks P0 along the first direction X is set to be greater than the number of the conductive blocks P0 along the second direction Y, so that the accuracy of the offset of the conductive glue G in the first direction X can be better detected without increasing the width of the step area 112 of the display panel 1 along the second direction Y, thereby facilitating a narrow frame.

[0071] Optional, please refer to Figure 6 , Figure 6 The present invention also provides a partial top view of a display panel; the display panel 1 has a plurality of first detection lines L1, along the first direction X, the first detection lines L1 are at least located on both sides of the conductive connection terminal P, the first detection lines L1 located on both sides of the conductive connection terminal P are electrically connected to the test terminals T respectively, and the conductive glue G covers the conductive connection terminal P. This arrangement does not limit the specific design of the conductive connection terminal P, that is, the conductive connection terminal P can be only one conductive block or multiple conductive blocks. The conductive connection terminal P is used to conduct electrostatic charge, and the first detection lines L1 are used to determine the specific position of the conductive glue G.

[0072] Please refer to Figures 22-24 , Fig. 22 A partial top view of another display panel provided by the present invention is shown. Fig.23 A partial top view schematic diagram of another display panel provided by the present invention is shown in FIG. Fig.24 A partial top view schematic diagram of another display panel provided by the present invention; based on Figure 6 The present invention provides another method for detecting the coating accuracy of conductive adhesive on a display panel, such as Fig. 22 , when the conductive glue G only covers the conductive connection terminal P but not the first detection line L1, the test terminal T detects no signal, and it is determined that the display panel 1 is well coated with the conductive glue; Fig.23 , Fig.24 When the conductive glue G covers one of the first detection lines L1, the test terminal T determines whether the conductive glue G deviates to the left or right according to the detected signal, thereby determining that the conductive glue coating of the display panel 1 is poor.

[0073] The above method reasonably sets the first detection line L1 located on both sides of the conductive connection terminal P along the first direction X according to the size of the conductive glue G, so that the conductive glue G is offset and can only cover one of the detection lines, so that the coating accuracy of the conductive glue G can be determined by the detection line; wherein the first detection line L1 can reuse the metal film layer on the display panel 1, the display panel 1 is simple in design, the process is feasible, and no additional film layer and process are required, and no related costs need to be increased; the specific coating accuracy of the conductive glue G is determined by whether the conductive glue G covers the first detection line L1, the operation is simple, and no additional testing equipment is required, and no cost is increased. The detection method has high accuracy, which is convenient for accurate judgment and classification of the display panel 1, and screening of defective products.

[0074] Optional, see Figure 7 , Figure 7 A partial top view of another display panel provided by the present invention; one of the first detection lines L1 located on both sides of the conductive connection terminal P half surrounds the conductive connection terminal P, such as Figure 7 As shown, the first detection line L1 located at the conductive connection terminal P near the edge of the display panel 1 first extends along the second direction Y and then extends along the first direction X, that is, the first detection line L1 is located on one side of the conductive connection terminal P along the first direction, and also on the side of the conductive connection terminal P away from the first area 111. One of the detection lines is set to semi-enclose the conductive connection terminal P, which can increase the detection of the conductive glue G shifting to the side away from the first area 111, that is, when the conductive glue G shifts along the first direction X and / or the second direction Y, the test terminal T can detect the signal, which relatively enhances the detection of the coating accuracy of the conductive glue G by the first detection line L1.

[0075] Optional, please continue to refer to Figure 7 , the first detection lines L1 located on both sides of the conductive connection terminal P are at the same distance H from the edge of the conductive connection terminal P; because the offset of the conductive glue G is equivalent in the first direction X and the second direction Y, the first detection lines L1 located on both sides of the conductive connection terminal P are set to be at the same distance H from the edge of the conductive connection terminal P, that is, in the first direction X and the second direction Y, the offset of the conductive glue G is judged by the same judgment standard, which is conducive to the detection of the coating accuracy of the conductive glue G; however, the present invention does not limit the distance between the first detection line L1 and the edge of the conductive connection terminal P to be consistent everywhere, such as it can be set that along the first direction X, the distance between the first detection line L1 and the edge of the conductive connection terminal P is consistent, and along the second direction Y, the distance between the first detection line L1 and the edge of the conductive connection terminal P is different from that in the first direction, so that the coating accuracy of the conductive glue G can be differentially detected.

[0076] Optional, see Figure 8 , Figure 8The present invention also provides a partial top view of a display panel; the display panel 1 further has a plurality of second inspection lines L2, wherein the second inspection line L2 is located between the first inspection line L1 and the conductive connection terminal P, and the second inspection line L2 is arranged on the side of the first inspection line L1 close to the conductive connection terminal P, which is equivalent to tightening the inspection specifications for the coating accuracy of the conductive glue G. The second inspection line L2 can be used in the production process to calibrate the machine, or during the first production, when the coating accuracy of the conductive glue G needs to be strictly controlled, and the first inspection line L1 can be used for the inspection of the coating accuracy of the conductive glue G during general mass production.

[0077] Optionally, one of the second detection lines L2 located on both sides of the conductive connection terminal P may be arranged to half surround the conductive connection terminal P, such as Figure 8 As shown, the second detection line L2 located at the conductive connection terminal P near the edge of the display panel 1 first extends along the second direction Y, and then extends along the first direction X, that is, the second detection line L1 is located on one side of the conductive connection terminal P along the first direction, and is also located on the side of the conductive connection terminal P away from the first area 111, so that the detection of the conductive glue G shifting to the side away from the first area 111 can be increased, that is, when the conductive glue G shifts along the first direction X and / or the second direction Y, the test terminal T can detect the signal, which relatively enhances the detection of the second detection line L2 for the coating accuracy of the conductive glue G. Optionally, the second detection lines L2 located on both sides of the conductive connection terminal P can also be set to have the same distance H from the edge of the conductive connection terminal P, so that the offset of the conductive glue G can be judged in the first direction X and the second direction Y by the same judgment standard.

[0078] The present invention also provides a display device, which includes display terminal products such as smart phones, flat panel display devices, and notebook display devices. Fig. 9 As shown, Fig. 9 It is a schematic top view of a display device provided by the present invention; the display device 2 includes the above-mentioned display panel 1, and the beneficial effects produced by the display device 2 are the same as the beneficial effects described in the above-mentioned embodiments, which will not be described in detail here.

[0079] The above description shows and describes several preferred embodiments of the present application, but as mentioned above, it should be understood that the present application is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the invention concept described herein through the above teachings or the technology or knowledge of the relevant field. The changes and modifications made by those skilled in the art do not depart from the spirit and scope of the present application, and should be within the scope of protection of the claims attached to the present application.

Claims

1. A display panel, characterized in that: include: A first substrate and a second substrate are arranged opposite to each other, the first substrate has a first area and a step area, and in a direction perpendicular to the display panel, a projection of the step area and the second substrate does not overlap; at least two conductive connection terminals, wherein the conductive connection terminals are located in the step area; A test terminal, the test terminal is located in the step area and between the at least two conductive connection terminals; The conductive connection terminal comprises a plurality of conductive blocks, each of which is electrically connected to the test terminal via at least one conductive line; Conductive adhesive, wherein a single conductive adhesive at least partially covers the second substrate and at least two of the conductive blocks; Alternatively, the display panel has multiple first detection lines, along the first direction, the first detection lines are located at least on both sides of the conductive connection terminals, the first detection lines are electrically connected to the test terminals, the first area points to the step area as the second direction, the first direction intersects with the second direction, and a single conductive glue covers the second substrate and the conductive connection terminals and is spaced apart from at least one of the first detection lines.

2. The display panel according to claim 1, characterized in that: The conductive connection terminal comprises a main conductive block and a secondary conductive block, and along the first direction, the secondary conductive blocks are at least located on two sides of the main conductive block; The main conductive block and the auxiliary conductive block are electrically connected to the test terminal through the conductive wires, respectively.

3. The display panel according to claim 2, characterized in that: The auxiliary conductive block is also located at a side of the main conductive block away from the first region.

4. The display panel according to claim 1, characterized in that: The conductive connection terminal includes a plurality of identical conductive blocks, and the plurality of identical conductive blocks are arranged in an array, or along the first direction and / or the second direction, two adjacent identical conductive blocks are arranged alternately.

5. The display panel according to claim 1, characterized in that: The conductive connection terminal includes a plurality of conductive blocks, and the number of the conductive blocks along the first direction is greater than the number of the conductive blocks along the second direction.

6. The display panel according to claim 1, characterized in that: One of the first detection lines extends along the first direction and the second direction and partially surrounds the conductive glue.

7. The display panel according to claim 1, characterized in that: The two first detection lines are at the same distance from the conductive connection terminal.

8. The display panel according to claim 1, characterized in that: The display panel further has a plurality of second detection lines, and the second detection lines are located between the first detection lines and the conductive connection terminals.

9. The display panel according to claim 8, characterized in that: One of the second detection lines extends along the first direction and the second direction and partially surrounds the conductive glue.

10. A display device, characterized in that: The invention comprises the display panel according to claims 1 to 9.

11. A display panel conductive adhesive coating detection method, characterized in that: The display panel comprises a first substrate and a second substrate arranged opposite to each other, the first substrate having a first area and a step area, and in a direction perpendicular to the display panel, a projection of the step area and the second substrate does not overlap; At least two conductive connection terminals are arranged in the step area, and a test terminal is arranged between the at least two conductive connection terminals; The conductive connection terminal includes a main conductive block and a guide conductive block, and the guide conductive blocks are arranged at least on two sides of the main conductive block along a first direction; the first area pointing to the step area is a second direction, and the first direction intersects with the second direction; The main conductive block and the auxiliary conductive block are respectively electrically connected to the test terminal through conductive wires; When the conductive glue covers the main conductive block and all the auxiliary conductive blocks, it is judged that the conductive glue coating of the display panel is good; when the conductive glue covers the main conductive block and part of the auxiliary conductive block, it is judged that the conductive glue coating of the display panel is poor.

12. A display panel conductive adhesive coating detection method, characterized in that: The display panel comprises a first substrate and a second substrate arranged opposite to each other, the first substrate having a first area and a step area, and in a direction perpendicular to the display panel, a projection of the step area and the second substrate does not overlap; At least two conductive connection terminals are arranged in the step area, and a test terminal is arranged between the at least two conductive connection terminals; The conductive connection terminal is configured to include a plurality of conductive blocks, each of which is electrically connected to the test terminal via at least one conductive line; S1, calculating the projection area s1 of the plurality of conductive blocks included in the conductive connection terminal on the display panel; S2, detecting the conductive blocks covered by the conductive adhesive, and calculating a projection area s2 of the conductive blocks covered by the conductive adhesive on the display panel; S3. Establish area ratio standard M; S4. When s2 / s1≥M, and a single conductive adhesive at least partially covers the second substrate and at least two conductive blocks, it is determined that the display panel conductive adhesive is well coated; when s2 / s1<M, it is determined that the display panel conductive adhesive is poorly coated.

13. A display panel conductive adhesive coating detection method, characterized in that: The display panel comprises a first substrate and a second substrate arranged opposite to each other, the first substrate having a first area and a step area, and in a direction perpendicular to the display panel, a projection of the step area and the second substrate does not overlap; At least two conductive connection terminals are arranged in the step area, and a test terminal is arranged between the at least two conductive connection terminals; A first detection line is provided at least on both sides of the conductive connection terminal along a first direction, and the first detection line is electrically connected to the test terminal. The first area points to the step area as a second direction, and the first direction intersects with the second direction. When the conductive adhesive does not cover the first detection line, it is determined that the conductive adhesive coating of the display panel is good; when the conductive adhesive covers the first detection line, it is determined that the conductive adhesive coating of the display panel is poor.

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