Prefabricated panel, display panel, display device and preparation method of display panel

Abstract

The invention provides a prefabricated panel, a display panel, a display device and a preparation method of the display panel, the prefabricated panel comprises a substrate, a pixel circuit, a first type signal line and a detection circuit, the pixel circuit is arranged on one side of the substrate, the first type signal line has a first end and a second end which are opposite, the first end and the pixel circuit are located on the same side of the substrate, and the detection circuit is arranged on the substrate. The second end and the first end are located on different sides of the substrate. The detection circuit comprises a first control unit and a connection sacrifice part, the first control unit is connected in series with different first ends, and the connection sacrifice part is connected in series with different second ends. Wherein the first type of signal lines can be connected in series through the detection circuit. In the embodiment of the invention, by means of common cooperation of the first control unit and the connection sacrifice part, series arrangement of the plurality of first-type signal lines can be realized, so that common detection of the plurality of first-type signal lines is realized, the detection requirement of side routing in the edge area and the central area is met, and the overall detection precision is improved.

Description

Technical Field

[0001] The present application relates to the technical field of display devices, and in particular to a prefabricated panel, a display panel, a display device, and a method for manufacturing a display panel. Background Art

[0002] With the continuous development of display technology, monitors are becoming more and more important in people's daily lives, and people's requirements for screen-to-body ratio are also getting higher and higher.

[0003] In order to pursue a higher screen-to-body ratio, double-sided routing can be achieved. Double-sided routing involves routing on three surfaces: the upper surface, the lower surface, and the side surface of the display panel. The line detection methods in related technologies are generally automatic optical inspection (AOI) testing and test key testing. They cannot achieve full line inspection, have low detection efficiency, and are prone to missed detections.

[0004] Therefore, how to improve the line detection accuracy and achieve full line inspection is a technical problem that needs to be solved urgently. Summary of the Invention

[0005] The embodiments of the present application provide a prefabricated panel, a display panel, a display device, and a method for manufacturing a display panel, which can improve detection accuracy.

[0006] In a first aspect, an embodiment of the present application provides a prefabricated panel, comprising a substrate, a pixel circuit, a first type of signal line, and a detection circuit, wherein the pixel circuit is disposed on one side of the substrate, and the first type of signal line has a first end and a second end relative to each other, wherein the first end and the pixel circuit are located on the same side of the substrate, and the second end and the first end are located on a different side of the substrate. The detection circuit comprises a first control unit and a connecting sacrificial portion, wherein the first control unit is connected in series with different first ends, and the connecting sacrificial portion is connected in series with different second ends. The first type of signal line can be connected in series via the detection circuit.

[0007] In a second aspect, embodiments of the present application provide a display panel, comprising a substrate, a pixel circuit, a first type of signal line, a first control unit, and a sacrificial trace. The pixel circuit is disposed on one side of the substrate. The first type of signal line has a first end and a second end opposite each other, the first end being located on the same side of the substrate as the pixel circuit, and the second end being located on a different side of the substrate from the first end. The first control unit is connected in series with different first ends. Multiple sacrificial traces are correspondingly connected to the multiple second ends, and the ends of the sacrificial traces away from the second ends are suspended.

[0008] In a third aspect, an embodiment of the present application provides a display device, which includes the display panel in any of the aforementioned embodiments.

[0009] In a fourth aspect, an embodiment of the present application provides a method for detecting a display panel, the preparation method comprising:

[0010] Providing the prefabricated panel in any of the aforementioned embodiments;

[0011] Controlling the first control unit to conduct, so that the plurality of first-type signal lines form a series conduction circuit;

[0012] Detect whether the series conduction circuit is in the on state or the off state;

[0013] When the series conduction circuit is in a conduction state, the connection sacrificial portion is disconnected to form sacrificial traces corresponding to the plurality of second ends, and one end of the sacrificial trace away from the second end is suspended.

[0014] The embodiments of the present application provide a prefabricated panel, a display panel, a display device, and a method for preparing a display panel. The detection circuit is provided with a first control unit and a connection sacrificial portion. The first control unit realizes the series connection between different first ends, and the connection sacrificial portion realizes the series connection between different second ends. Thus, with the cooperation of the first control unit and the connection sacrificial portion, a series connection between multiple first-class signal lines can be realized, that is, multiple side lines can be connected in series through the detection circuit. On this basis, by adjusting parameters such as the number and position of the first control unit and the connection sacrificial portion, the first-class signal lines in different areas can be connected in series through the same detection circuit, thereby realizing the joint detection of multiple first-class signal lines, meeting the comprehensive detection needs of different side lines in the edge area and the center area of the prefabricated panel, and improving the overall detection accuracy.

[0015] In addition, the connection sacrificial part in the detection circuit can be removed after the detection is completed, so that at least part of the structure in the connection sacrificial part does not exist in the subsequently formed display panel and display device, thereby achieving insulation between different second ends and insulation between different side lines, meeting the needs of respective signal transmission in different first-class signal lines, and improving the reliability of the display panel and display device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0017] Figure 1 This is a schematic structural diagram of a display in the related art;

[0018] Figure 2 This is a structural diagram of a prefabricated panel provided in an embodiment of the present application;

[0019] Figure 3 This is a structural diagram of another prefabricated panel provided in an embodiment of the present application;

[0020] Figure 4 This is a schematic diagram of the cross-sectional structure of a prefabricated panel provided in an embodiment of the present application;

[0021] Figure 5 This is a structural diagram of another prefabricated panel provided in an embodiment of the present application;

[0022] Figure 6 This is a simplified circuit diagram of another prefabricated panel provided in an embodiment of the present application;

[0023] Figure 7 This is a simplified circuit diagram of another prefabricated panel provided in an embodiment of the present application;

[0024] Figure 8 This is a structural diagram of another prefabricated panel provided in an embodiment of the present application;

[0025] Figure 9 This is a structural diagram of another prefabricated panel provided in an embodiment of the present application;

[0026] Figure 10 This is a structural diagram of another prefabricated panel provided in an embodiment of the present application;

[0027] Figure 11 This is a structural diagram of another prefabricated panel provided in an embodiment of the present application;

[0028] Figure 12 is a structural diagram of a display panel provided in an embodiment of the present application;

[0029] Figure 13 This is a schematic diagram of the structure of a display device provided in an embodiment of the present application.

[0030] Figure 14 This is a flow chart of another method for preparing a display panel provided in an embodiment of the present application.

[0031] Marking Description:

[0032] 100. Prefabricated panel; 200. Display panel; 300. Display device

[0033] 10. Substrate;

[0034] 20. Pixel circuit; 20a. First type pixel circuit; 20b. Second type pixel circuit;

[0035] 30, first type signal line; 30a, first signal line; 30b, second signal line; 30c, third signal line; 30d, fourth signal line; 30e, fifth signal line; 30f, sixth signal line;

[0036] 40. Detection circuit; 40a. First circuit structure; 40b. Second circuit structure; 41. First control unit; 41a. First unit; 41b. Second unit; 42. Connection sacrificial unit; 42a. First sacrificial unit; 42b. Second sacrificial unit; 43. First subunit; 44. Second subunit;

[0037] 50, first type control line; 51, first control line; 52, second control line;

[0038] 60. Virtual signal line;

[0039] 70. Second type signal line; 71. First sub-segment; 72. Second sub-segment;

[0040] 81. Second control unit; 82. Second type control line;

[0041] 90. Sacrifice routing;

[0042] T1, first transistor; T2, second transistor;

[0043] H1, first bonding pad; H2, second bonding pad; H3, third bonding pad; H4, working pad; H5, test pad;

[0044] 30', side routing;

[0045] A1, display area; A2, peeling area;

[0046] D1, first end; D2, second end; D3, third end; D4, fourth end;

[0047] L, virtual straight line; F, light-emitting element;

[0048] X, first direction; Y, second direction; Z, thickness direction. DETAILED DESCRIPTION

[0049] The features and exemplary embodiments of various aspects of the present application will be described in detail below. In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only intended to explain the present application, rather than to limit the present application. For those skilled in the art, the present application can be implemented without the need for some of these specific details. The following description of the embodiments is merely to provide a better understanding of the present application by illustrating the examples of the present application.

[0050] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, the elements defined by the phrase "comprising..." do not exclude the presence of other identical elements in the process, method, article, or device comprising the elements.

[0051] In related technologies, circuits can be detected through optical testing or test key testing. Optical testing uses machine vision to perform optical image testing. It can only identify more obvious anomalies through snapshots, but cannot identify minor anomalies. If minor anomalies are to be identified, the requirements for optical testing equipment are high, and the test efficiency is low, resulting in high detection costs.

[0052] The test key test requires setting the test point, such as Figure 1 As shown, the display is provided with test pads H5, working pads, and side traces. Side traces 30' are provided on the side surface of the display panel, and the two ends of side traces 30' are respectively connected to two working pads H4 or two test pads H5. In addition to being connected to the side traces 30', the working pads H4 are also electrically connected to specific signal traces to meet specific signal transmission requirements. The test pads H5 are pad structures used to implement detection functions. Unlike the working pads H4, the test pads H5 are not electrically connected to the signal traces. Multiple working pads H4 are arranged side by side in the horizontal direction, while the test pads H5 are located on at least one side of all the working pads H4 in the horizontal direction. In the figure, the portion of the working pads H4, the portion of the test pads H5, and the portion of the side traces 30' located on one side of the display in the thickness direction are marked with solid lines, while the portion of the working pads H4, the portion of the test pads H5, and the portion of the side traces 30' located on the other side of the display in the thickness direction are marked with dotted lines.

[0053] It can be seen from the accompanying drawings that different working pads H4 in the horizontal direction are insulated from each other to meet the independent signal transmission needs of each signal line, and the test pad H5 is only electrically connected to the adjacent working pad. Therefore, with the help of the test pad H5, only the side lines 30' corresponding to some working pads H4 at the edge position can be detected whether there are short circuits or open circuit abnormalities, but the side lines 30' corresponding to the working pads H4 in the middle area cannot be detected.

[0054] Regarding the above issues, please refer to Figures 2 to 4 The present invention provides a prefabricated panel 100 in an embodiment. The prefabricated panel 100 includes a substrate 10, a pixel circuit 20, a first-type signal line 30, and a detection circuit 40. The pixel circuit 20 is disposed on one side of the substrate 10. The first-type signal line 30 has a first end D1 and a second end D2 opposite each other. The first end D1 and the pixel circuit 20 are located on the same side of the substrate 10, while the second end D2 and the first end D1 are located on a different side of the substrate 10. The detection circuit 40 includes a first control unit 41 and a connecting sacrificial portion 42. The first control unit 41 is connected in series with different first ends D1, and the connecting sacrificial portion 42 is connected in series with different second ends D2. The first-type signal lines 30 can be connected in series via the detection circuit 40.

[0055] The prefabricated panel 100 is used for the subsequent preparation to form the display panel 200. During the preparation process, the prefabricated panel 100 is first formed, and then the prefabricated panel 100 is inspected. If there is any abnormality, it needs to be repaired. After the repair is completed or the inspection is correct, the prefabricated panel 100 is further processed to form the display panel 200. Thereafter, the display panel 200 is assembled with other structures such as the middle frame to finally form the display device 300.

[0056] The embodiment of the present application does not limit the specific type of the display panel 200. Optionally, the display panel 200 is a micro-luminescent display panel 200, that is, the light-emitting element F in the display panel 200 can be a micro light-emitting element F such as a micro light-emitting diode (Micro LED) or a sub-millimeter light-emitting diode (Mini LED). The light-emitting element F can have a variety of structural forms. For example, the light-emitting element F can be a flip-chip, or a face-mounted chip, or a vertical chip. According to different manufacturing processes, the prefabricated panel 100 can be provided with a light-emitting element F, that is, the light-emitting element F is formed first and then the prefabricated panel 100 is inspected, or the prefabricated panel 100 can be not provided with a light-emitting element F, that is, the prefabricated panel 100 is inspected first and then the light-emitting element F is formed. The embodiment of the present application does not limit this, and the embodiment of the present application will be described later using the prefabricated panel 100 including the light-emitting element F as an example.

[0057] The substrate 10 is a membrane structure that provides support for the prefabricated panel 100. Other membrane structures are disposed on both sides of the substrate 10 along the thickness direction Z of the substrate 10. The thickness direction Z of the substrate 10 is often parallel to the thickness directions Z of the other membrane layers and the thickness direction Z of the prefabricated panel 100. Therefore, for ease of understanding, the present embodiment illustrates the thickness direction Z of the substrate 10, the thickness directions Z of the other membrane layers, and the thickness direction Z of the prefabricated panel 100 as the same thickness direction Z.

[0058] The pixel circuit 20 is a circuit structure for driving the light-emitting element F to emit light. There are multiple pixel circuits 20, each of which controls a different light-emitting element F to achieve the light-emitting function. The projections of the pixel circuit 20 and the corresponding light-emitting element F in the thickness direction Z can overlap or be relatively offset, which is not limited in this embodiment of the present application.

[0059] The pixel circuit 20 can have various forms. Optionally, the pixel circuit 20 includes a pulse width modulation subcircuit and an amplitude modulation subcircuit. The pulse width modulation subcircuit is configured to control the pulse width of the driving current provided to the light-emitting element F based on the pulse width modulation data voltage, and the amplitude modulation subcircuit is configured to control the amplitude of the driving current provided to the light-emitting element F based on the pulse amplitude modulation data voltage. The pulse width of the driving current can be understood as the duration of the driving current, and the amplitude of the driving current can be understood as the current value of the driving current.

[0060] Specifically, the light-emitting element F includes a first electrode, a second electrode, and a light-emitting portion. The first and second electrodes work together to enable the light-emitting portion to achieve a light-emitting display function. The pixel circuit 20 generates a drive current under the control of an amplitude modulation subcircuit and a pulse width modulation subcircuit. The amplitude modulation subcircuit can be used to control the amplitude of the drive current, while the pulse width modulation subcircuit can be used to adjust the pulse width of the voltage applied to the second electrode of the light-emitting element F. The pulse width modulation subcircuit adjusts the pulse width of the voltage applied to the second electrode of the light-emitting element F, that is, the pulse width modulation subcircuit adjusts the actual emission period of the drive current applied to the light-emitting element F. Simultaneously, the drive current applied to the light-emitting element F can be maintained at a constant level to adjust the grayscale or brightness displayed by the light-emitting element F, rather than adjusting the magnitude of the drive current applied to the light-emitting element F. Therefore, the amplitude modulation subcircuit can provide a drive current to the light-emitting element F so that the light-emitting element F is driven at optimal luminous efficiency. Furthermore, the pulse width modulation subcircuit adjusts the duty cycle of the light-emitting element F (i.e., the emission period of the light-emitting element F) to adjust the grayscale or brightness displayed by the light-emitting element F. Among them, the output end of the pulse width modulation sub-circuit can be directly connected to the control end of a driving transistor in the amplitude modulation sub-circuit or indirectly controlled through a capacitor structure, that is, the electrical signal output by the output end of the pulse width modulation sub-circuit can be directly written to the control end of the driving transistor, or the control end of the driving transistor can be controlled by writing to the capacitor structure to achieve adjustment of the driving current amplitude.

[0061] Furthermore, the pixel circuit 20 often includes multiple functional devices such as thin film transistors and storage capacitors. The thin film transistors are composed of a portion of the structure in the conductor layer and a portion of the structure in the semiconductor layer, while the storage capacitor is formed by stacking the respective conductor structures in the two conductor layers. On this basis, the multiple film layer structures used to constitute the pixel circuit 20 are usually located on the same side of the substrate 10. Figure 4 Only the thin film transistors in the pixel circuit 20 are shown.

[0062] The first-type signal line 30 is a side trace in the prefabricated panel 100. The first-type signal line 30 has a first end D1 and a second end D2 that are opposite each other in its extension direction. The first end D1 and the multiple film layer structures used to constitute the pixel circuit 20 are located on the same side of the substrate 10. The first-type signal line 30 bends from the first end D1 to the side surface of the prefabricated panel, and then bends and extends to the second end D2 on the side of the substrate 10 away from the first end D1. The prefabricated panel 100 can be provided with a pad structure at both the first end D1 and the second end D2. The detection circuit 40 and other trace structures can be connected to the first end D1 or the second end D2 by welding to the pad structure.

[0063] The detection circuit 40 is used to detect whether there are any abnormalities in the first-class signal lines 30. The detection circuit 40 includes a first control unit 41 and a sacrificial connection portion, which work together to achieve a series connection between multiple first-class signal lines 30. Specifically, the first control unit 41 is connected in series with different first terminals D1. The first control unit 41 includes a control element. The presence of the control element enables the first control unit 41 to control the switching of different first terminals D1 between the on state and the off state. The control element in the first control unit 41 can have various forms, for example, the control element can include a transistor or a control circuit.

[0064] The sacrificial connection portion 42 is connected in series to different second ends D2. The "sacrificial" in the sacrificial connection portion 42 means that at least a portion of the sacrificial connection portion 42 needs to be removed during the subsequent manufacturing process of the display panel 200. In other words, the sacrificial connection portion 42 is absent in the subsequently formed display panel 200 and display device 300, or only a portion of the sacrificial connection portion 42 is present. Therefore, in the prefabricated panel 100, the presence of the sacrificial connection portion 42 enables the different second ends D2 to be in a conductive state. However, in the subsequently formed display panel 200 and display device 300, since at least a portion of the sacrificial connection portion 42 is removed, the different second ends D2 are insulated from each other.

[0065] It should be noted that the embodiment of the present application does not limit the degree of removal of the connection sacrificial part 42 in subsequent processes. Optionally, in the subsequent preparation process of the display panel 200, part of the structure in the connection sacrificial part 42 can be retained, as long as the different second ends D2 are not connected through the partial structure retained in the connection sacrificial part 42. In addition, depending on actual needs, in the prefabricated panel 100, the connection sacrificial part 42 can be provided with a control element like the first control unit 41 to control the switching of the different second ends D2 between the on state and the off state. Alternatively, the connection sacrificial part 42 may not be provided with a control unit, so that the different second ends D2 can be in a continuously conductive state through the connection sacrificial part 42.

[0066] In some optional embodiments, the connection sacrificial portion 42 only includes a wire structure but does not include a control element. In this way, when the connection sacrificial portion 42 is subsequently removed, only the wire structure needs to be laser cut to achieve mutual insulation between different second ends D2, which helps to reduce the difficulty of removing the connection sacrificial portion 42 and reduce the risk of short circuit between different second ends D2 in the display panel 200.

[0067] In the related art, a single test pad can only be electrically connected to one side trace at the edge position, thereby only being able to detect one side trace at the edge position. However, in the embodiment of the present application, the detection circuit 40 is provided with a first control unit 41 and a connection sacrificial portion 42. The first control unit 41 realizes the series connection between different first ends D1, and the connection sacrificial portion 42 realizes the series connection between different second ends D2. Thus, with the help of the cooperation of the first control unit 41 and the connection sacrificial portion 42, it is possible to realize the series connection between multiple first-class signal lines 30, that is, multiple side traces can be connected in series through the detection circuit 40. On this basis, by adjusting the number and position of the first control unit 41 and the connection sacrificial portion 42 and other parameters, the first-class signal lines 30 in different areas can be connected in series through the same detection circuit 40, thereby realizing the joint detection of multiple first-class signal lines 30, meeting the detection needs of different side traces in the edge area and the center area of the prefabricated panel 100, and improving the overall detection accuracy.

[0068] In addition, the connection sacrificial portion 42 in the detection circuit 40 can be removed after the detection is completed, so that at least part of the structure of the connection sacrificial portion 42 does not exist in the subsequently formed display panel 200 and the display device 300, thereby achieving insulation between different second ends D2 and insulation between different side traces, meeting the needs of respective signal transmission within different first-class signal lines 30, and improving the reliability of the display panel 200 and the display device 300.

[0069] It should be noted that the embodiments of the present application do not limit the specific type of signal transmitted by the first-class signal line 30. Optionally, the first-class signal line 30 can be electrically connected to the pixel circuit 20, that is, the signal transmitted in the first-class signal line 30 is used to drive the pixel circuit 20 to operate. Specifically, the prefabricated panel 100 also includes a connecting wire, one end of which is connected to the first end D1 to achieve electrical connection with the first-class signal line 30, and the connecting wire is also electrically connected to the pixel circuit 20 by means of a via or the like to achieve electrical connection between the first-class signal line 30 and the pixel circuit 20. Of course, in other embodiments, the first-class signal line 30 can also be insulated from the pixel circuit 20.

[0070] In some embodiments, see Figures 3 to 5 The plurality of first-type signal lines 30 include a first signal line 30a, a second signal line 30b, and a third signal line 30c arranged side by side in sequence, the plurality of first control units 41 include a first unit 41a, the plurality of connecting sacrificial parts 42 include a first sacrificial part 42a, the first unit 41a connects in series the first end D1 of the first signal line 30a and the first end D1 of the second signal line 30b, and the first sacrificial part 42a connects in series the second end D2 of the second signal line 30b and the second end D2 of the third signal line 30c.

[0071] The first signal line 30a, the second signal line 30b, and the third signal line 30c are all side routing lines and are arranged side by side in a specific direction, that is, the second signal line 30b is located between the first signal line 30a and the third signal line 30c. The first signal line 30a and the second signal line 30b can be two adjacent side routing lines, or other side routing lines can exist between the first signal line 30a and the second signal line 30b, which is not limited in this embodiment of the present application. Similarly, the second signal line 30b and the third signal line 30c can be two adjacent side routing lines, or other side routing lines can exist between the second signal line 30b and the third signal line 30c.

[0072] There are multiple first control units 41, each of which is used to electrically connect to the first end D1 corresponding to a different first-type signal line 30. The first unit 41a is one of the multiple first control units 41. The first unit 41a is connected in series with the first end D1 of the first signal line 30a and the first end D1 of the second signal line 30b. There are multiple sacrificial connection portions 42, each of which includes a first sacrificial portion 42a. The first sacrificial portion 42a is one of the multiple sacrificial connection portions. The first sacrificial portion 42a is connected in series with the second end D2 of the second signal line 30b and the second end D2 of the third signal line 30c.

[0073] It can be seen from the accompanying drawings that in the embodiment of the present application, the presence of the first unit 41a and the first sacrificial portion 42a enables the first signal line 30a, the second signal line 30b and the third signal line 30c to be connected in series. Therefore, the detection circuit 40, with the help of multiple first control units 41 and multiple connection sacrificial portions 42, can realize the detection of more than three side lines, thereby enhancing the overall detection accuracy of the prefabricated panel 100.

[0074] In addition, this design enables a plurality of first control units 41, a plurality of connection sacrifice parts 42 and a plurality of first type signal lines 30 to form a Figure 2 The serpentine-shaped series channels shown reduce the risk of overlap of the orthographic projections of different first control units 41 on the substrate 10, thereby reducing the risk of physical interference between different first control units 41. Similarly, this design can also reduce the risk of physical interference between different sacrificial connections, reducing the difficulty of the overall wiring layout within the prefabricated panel 100.

[0075] It should be noted that, in addition to the above-described embodiments, the first sacrificial portion 42a and the first unit 41a may also have other connection methods relative to the first signal line 30a, the second signal line 30b, and the third signal line 30c, and the embodiments of the present application are not limited thereto. For example, referring to the figure, in some embodiments, the first unit 41a is connected in series with the first end D1 of the first signal line 30a and the first end D1 of the third signal line 30c, and the first sacrificial portion 42a is connected in series with the second end D2 of the first signal line 30a and the second end D2 of the second signal line 30b. Furthermore, in this case, the orthographic projections of the first sacrificial portion 42a and the other sacrificial connection portions on the substrate 10 will overlap. In view of this, the portion of the structure where the first sacrificial portion 42a overlaps with the other sacrificial connection portions needs to be arranged in different layers to reduce the risk of physical interference and signal interference between the two and enhance the accuracy of detection.

[0076] In some embodiments, see Figure 6 , the first signal line 30a, the second signal line 30b and the third signal line 30c are arranged adjacent to each other in sequence; or, refer to Figure 7 The number of the first type signal lines 30 located between the first signal line 30a and the second signal line 30b is the same as the number of the first type signal lines 30 located between the second and third signal lines 30c.

[0077] In some embodiments, the first signal line 30a, the second signal line 30b, and the third signal line 30c are arranged adjacent to each other in sequence, i.e., no other first-category signal line 30 exists between the first signal line 30a and the second signal line 30b, and no other first-category signal line 30 exists between the second signal line 30b and the third signal line 30c. In other embodiments, the number of first-category signal lines 30 located between the first signal line 30a and the second signal line 30b is the same as the number of first-category signal lines 30 located between the second signal line 30b and the third signal line 30c. For example, there is one first-category signal line 30 between the first signal line 30a and the second signal line 30b, and one first-category signal line 30 exists between the second signal line 30b and the third signal line 30c.

[0078] In the embodiment of the present application, regardless of which of the above solutions is adopted, the distance between the first signal line 30a and the second signal line 30b and the distance between the second signal line 30b and the third signal line 30c can be kept the same or similar, so that the multiple first-class signal lines 30 electrically connected to the detection circuit 40 can be regularly arranged according to a specific spacing distance. On this basis, the two first-class signal lines 30 corresponding to different sacrificial connection parts can have the same or similar spacing distances, and the two first-class signal lines 30 corresponding to different first control units 41 can have the same or similar spacing distances. As a result, different sacrificial connection parts can adopt the same structure and size design, and different first control units 41 can adopt the same structure and size design, thereby simplifying the overall design difficulty of the detection circuit 40, reducing the risk of interference between different first control units 41 and different sacrificial connection parts, and improving detection accuracy.

[0079] In some embodiments, see Figure 7 The detection circuit 40 includes an insulated first circuit structure 40a and a second circuit structure 40b. The first circuit structure 40a and the second circuit structure 40b both include a first control unit 41 and a connecting sacrificial part 42, and the first circuit structure 40a and the second circuit structure 40b are used to connect different first-class signal lines 30 in series.

[0080] The first circuit structure 40a and the second circuit structure 40b both implement detection functions and include a first control unit 41 and a sacrificial connection portion 42. However, the difference between the first circuit structure 40a and the second circuit structure 40b is that the first circuit structure 40a and the second circuit structure 40b are respectively connected in series with different first-category signal lines 30. Specifically, the first control units 41 in the first circuit structure 40a and the second circuit structure 40b are respectively connected to the first ends D1 corresponding to different first-category signal lines 30, and the sacrificial connection portions in the first circuit structure 40a and the second circuit structure 40b are respectively connected to the second ends D2 corresponding to different first-category signal lines 30.

[0081] Furthermore, the first circuit structure 40a and the second circuit structure 40b are insulated from each other, so that during the detection process, the multiple first-class signal lines 30 connected in series with the first circuit structure 40a are insulated relative to the multiple first-class signal lines 30 connected in series with the second circuit structure 40b. In this way, at least some of the first-class signal lines 30 can be detected with the help of different circuit structures, thereby reducing the risk of poor detection accuracy due to an excessive number of first-class signal lines 30 connected in series.

[0082] Furthermore, detection of first-class signal lines 30 often includes both open circuit detection and short circuit detection. Based on this, embodiments of the present application divide the detection circuit 40 into at least two circuit structures, allowing for separate open circuit detection of different first-class signal lines 30. Furthermore, impedance testing of the signals within the two circuit structures can help identify whether a short circuit exists between the two signal channels. Thus, by leveraging the combined efforts of the first and second circuits, both open circuit detection and short circuit detection can be achieved for first-class signal lines 30, thereby increasing the detection range and enhancing practicality.

[0083] It should be noted that, depending on actual needs, the detection circuit 40 may only include two circuit structures, the first circuit structure 40a and the second circuit structure 40b, or the detection circuit 40 may also include a third circuit structure or more circuit structures that are insulated from the first circuit structure 40a and the second circuit structure 40b. The implementation of this application does not impose any restrictions on this.

[0084] In some embodiments, as Figure 7 As shown, the plurality of first-type signal lines 30 include a first signal line 30a, a fourth signal line 30d, a second signal line 30b, a fifth signal line 30e, a third signal line 30c, and a sixth signal line 30f, which are arranged in parallel. The first circuit structure 40a includes a first unit 41a and a first sacrificial portion 42a, and the second circuit structure 40b includes a second unit 41b and a second sacrificial portion 42b. The first unit 41a connects the first end D1 of the first signal line 30a and the first end D1 of the second signal line 30b in series, the first sacrificial portion 42a connects the second end D2 of the second signal line 30b and the second end D2 of the third signal line 30c in series, the second unit 41b connects the first end D1 of the fourth signal line 30d and the first end D1 of the fifth signal line 30e in series, and the second sacrificial portion 42b connects the second end D2 of the fifth signal line 30e and the second end D2 of the sixth signal line 30f in series.

[0085] The plurality of connection sacrificial portions 42 include a first sacrificial portion 42a within the first circuit structure 40a and a second sacrificial portion 42b within the second circuit structure 40b. The plurality of first control units 41 include a first unit 41a within the first circuit structure 40a and a second unit 41b within the second circuit structure 40b. The first circuit structure 40a, in conjunction with the first sacrificial portion 42a and the first unit 41a, enables the series connection of the three side traces: the first signal line 30a, the second signal line 30b, and the third signal line 30c. The second circuit structure 40b, in conjunction with the second sacrificial portion 42b and the second unit 41b, enables the series connection of the three side traces: the fourth signal line 30d, the fifth signal line 30e, and the sixth signal line 30f.

[0086] As can be seen from the accompanying drawings, the fourth signal line 30d is located between the first signal line 30a and the second signal line 30b, the fifth signal line 30e is located between the second signal line 30b and the third signal line 30c, and the sixth signal line 30f is located on the side of the third signal line 30c away from the fifth signal line 30e. In other words, the multiple first-class signal lines 30 corresponding to the first circuit structure 40a and the multiple first-class signal lines 30 corresponding to the second circuit structure 40b are interspersed with each other. Based on this, there is only one other first-class signal line 30 between the two first ends D1 connected to the first unit 41a, and only one other first-class signal line 30 between the two first ends D1 connected to the second unit 41b. Thus, in the arrangement direction of the multiple first-class signal lines 30, the first unit 41a and the second unit 41b do not need to have an excessively long extension, thereby reducing the adverse effect of resistance on the first unit 41a and the second unit 41b on the detection results. Similarly, there is only one other first-type signal line 30 between the two second ends D2 connected to the first sacrificial portion 42a, and there is only one other first-type signal line 30 between the two second ends D2 connected to the second sacrificial portion 42b. In this way, in the arrangement direction of the multiple first-type signal lines 30, the first sacrificial portion 42a and the second sacrificial portion 42b do not need to have an excessively large extension length, thereby reducing the adverse effect of the resistance on the first sacrificial portion 42a and the second sacrificial portion 42b on the detection results.

[0087] In addition, for two adjacent first-class signal lines 30, one of the first-class signal lines 30 is connected in series to the first circuit structure 40a, and the other first-class signal line 30 is connected in series to the second circuit structure 40b. On this basis, if a short circuit problem occurs between the two adjacent first-class signal lines 30, by simultaneously controlling the first circuit structure 40a and the second circuit structure 40b to be in the on state and performing impedance testing on the internal signals of the two groups of circuit structures, it is possible to determine whether there is a short circuit problem between the two adjacent first-class signal lines 30, thereby realizing the short circuit detection function.

[0088] Furthermore, when the first circuit structure 40a includes more connected sacrificial parts 42 and a first control unit 41 in addition to the first sacrificial part 42a and the first unit 41a, and the second circuit structure 40b includes more connected sacrificial parts 42 and a first control unit 41 in addition to the second sacrificial part 42b and the second unit 41b, the other connected sacrificial parts 42 and the first control unit 41 in the first circuit structure 40a and the second circuit structure 40b can be connected with reference to the first sacrificial part 42a, the second sacrificial part 42b, the first unit 41a and the second unit 41b relative to the corresponding second end D2 and the first end D1, thereby reducing the connection difficulty of the detection circuit 40 relative to the first end D1 and the second end D2, and reducing the overall design difficulty of the detection circuit 40.

[0089] In some embodiments, see Figure 7 and Figure 8 The plurality of pixel circuits 20 include first-type pixel circuits 20a and second-type pixel circuits 20b for driving light-emitting elements F of different colors. The first-type signal lines 30 connected to the first circuit structure 40a are electrically connected to the plurality of first-type pixel circuits 20a; and / or the first-type signal lines 30 connected to the second circuit structure 40b are electrically connected to the plurality of second-type pixel circuits 20b. Further optionally, the first-type signal lines 30 connected to the first circuit structure 40a are electrically connected to the plurality of first-type pixel circuits 20a, and the first-type signal lines 30 connected to the second circuit structure 40b are electrically connected to the plurality of second-type pixel circuits 20b.

[0090] To achieve a multi-color display function, the prefabricated panel 100 is typically provided with light-emitting elements F of multiple colors, such as a red light-emitting element F for emitting red light, a blue light-emitting element F for emitting blue light, and a green light-emitting element F for emitting green light. The first-type pixel circuit 20a and the second-type pixel circuit 20b are pixel circuits 20 used to drive light-emitting elements F of different colors to achieve a light-emitting function. For example, the first-type pixel circuit 20a is used to drive the red light-emitting element F, and the second-type pixel circuit 20b is used to drive the green light-emitting element F.

[0091] As can be seen from the foregoing, the detection circuit 40 includes a first circuit structure 40a and a second circuit structure 40b, and the first circuit structure 40a and the second circuit structure 40b are respectively used to realize the series connection of different first-class signal lines 30 to realize the detection function of different first-class signal lines 30. On this basis, for the case where the first-class signal lines 30 are electrically connected to the pixel circuit 20 to drive the pixel circuit 20 to operate, the embodiment of the present application configures the multiple first-class signal lines 30 electrically connected to the multiple first-class pixel circuits 20a to be connected to the first circuit structure 40a, and configures the multiple second-class signal lines 70 electrically connected to the multiple second-class pixel circuits 20b to be connected to the first circuit structure 40a, so that the detection circuit corresponding to a single circuit structure can drive the pixel circuits 20 corresponding to multiple light-emitting elements F of the same color. In addition to meeting the detection needs of the first-class signal lines 30 themselves, this design can also perform light emission detection on multiple light-emitting elements F of the same color, thereby expanding the detection range and improving practicality.

[0092] In some embodiments, as Figure 7As shown, the first control unit 41 in the first circuit structure 40a includes a first transistor T1, the first electrode and the second electrode of the first transistor T1 are respectively connected to the first end D1 of different first-type signal lines 30. The first control unit 41 in the second circuit structure 40b includes a second transistor T2, the first electrode and the second electrode of the second transistor T2 are respectively connected to the first end D1 of different first-type signal lines 30. The prefabricated panel 100 also includes a first control line 51 and a second control line 52 that are insulated. The first control line 51 is electrically connected to the control terminals of the plurality of first transistors 33, and the second control line 52 is electrically connected to the control terminals of the plurality of second transistors.

[0093] The first transistor T1 is a thin film transistor and is a control element in the first control unit 41. The second transistor T2 is a thin film transistor and is a control element in the second control unit 81. The first transistor T1 and the second transistor T2 each include a control terminal, a first electrode, and a second electrode. The control terminal is used to control the conduction between the first electrode and the second electrode. Optionally, the pixel circuit 20 also includes a thin film transistor. The semiconductor materials of the first transistor T1, the second transistor T2, and the thin film transistors in the pixel circuit 20, as well as the conductor materials corresponding to the control terminal, can be manufactured in the same layer, thereby simplifying the manufacturing process and reducing the manufacturing cost.

[0094] The first electrode and the second electrode of the first transistor T1 are respectively connected to the first end D1 of different first-category signal lines 30. During the detection process corresponding to the first circuit structure 40a, the control end of the first transistor T1 controls the first electrode and the second electrode to be conductive, thereby connecting the multiple first-category signal lines 30 corresponding to the first circuit structure 40a to each other. During the subsequent use of the display device 300, the control end of the first transistor T1 controls the first electrode and the second electrode to be disconnected, thereby isolating the multiple first-category signal lines 30 corresponding to the first circuit structure 40a from each other, thereby meeting the signal transmission requirements of the different first-category signal lines 30.

[0095] The first and second electrodes of the second transistor T2 are respectively connected to the first ends D1 of different first-category signal lines 30. During the detection process corresponding to the second circuit structure 40b, the control end of the second transistor T2 controls the first and second electrodes to be conductive, thereby connecting the multiple first-category signal lines 30 corresponding to the second circuit structure 40b to each other. During subsequent use of the display device 300, the control end of the second transistor T2 controls the first and second electrodes to be disconnected, thereby isolating the multiple first-category signal lines 30 corresponding to the second circuit structure 40b from each other, thereby meeting the signal transmission requirements of the different first-category signal lines 30.

[0096] Furthermore, the prefabricated panel 100 also includes an insulated first control line 51 and a second control line 52, and the first control line 51 and the second control line 52 are respectively electrically connected to the control ends of the first transistor T1 and the second transistor T2, thereby enabling the first circuit structure 40a and the second circuit structure 40b to be driven and controlled separately with the help of the first control line 51 and the second control line 52. In this way, during specific detection processes such as circuit break detection, the two control lines can be used to achieve independent detection of different first-class signal lines 30 corresponding to the two circuit structures, thereby reducing the mutual influence between the different first-class signal lines 30 corresponding to the two circuit structures and improving the detection accuracy.

[0097] In some embodiments, see Figure 9 The connection sacrificial portion 42 includes a first sub-portion 43 extending along the first direction X and a second sub-portion 44 extending along the second direction Y. The first sub-portion 43 is connected to the second end D2, and the second sub-portion 44 is connected to different first sub-portions 43. The plurality of first-type signal lines 30 are arranged side by side along the second direction Y. The first direction X intersects the second direction Y, and different first sub-portions 43 overlap in the second direction Y. Optionally, the first direction X and the second direction Y are arranged perpendicular to each other.

[0098] The first sub-portion 43 and the second sub-portion 44 can both be conductive structures. The first sub-portion 43 is the portion of the sacrificial connection portion 42 that is connected to the second end D2. The sacrificial connection portion 42 includes two first sub-portions 43. The second sub-portion 44 extends along the second direction Y, and the two ends of the second sub-portion 44 are connected to the two first sub-portions 43 as an integral unit. Depending on the required internal membrane layer layout of the prefabricated panel 100, the first sub-portion 43 and the second sub-portion 44 can be provided on the same layer, i.e., both are composed of the same material and formed together in the same process. Alternatively, the first sub-portion 43 and the second sub-portion 44 can be provided on different layers and connected via vias, which is not limited in this embodiment of the present application.

[0099] The sacrificial connection portion 42 is used to meet testing requirements, and at least part of the structure in the sacrificial connection portion 42 needs to be removed after the test is completed. On this basis, the embodiment of the present application arranges different first sub-portions 43 to overlap in the second direction Y, so that at least part of the structure in different first sub-portions 43 can be located on the same virtual straight line L parallel to the second direction Y. In this way, during the removal process, the laser can be set to move along the virtual straight line L, so that multiple first sub-portions 43 can be cut off by laser, and part of the structure in the sacrificial connection portion 42 can be removed, thereby meeting the insulation requirements between different first signal lines 30a during the subsequent use of the display device 300.

[0100] In some embodiments, see Figure 10The prefabricated panel 100 further includes a first type of control line 50 , which is electrically connected to a plurality of first control units 41 , and an orthographic projection of the first type of control line 50 on the substrate 10 is located between orthographic projections of adjacent pixel circuits 20 on the substrate 10 .

[0101] The first-class control line 50 is a signal line for controlling the first control unit 41. The first-class control line 50 can extend along the second direction Y. In combination with the aforementioned embodiment, the first control line 51 and the second control line 52 are both first-class control lines 50. The first-class control line 50 is electrically connected to multiple first control units 41. When the detection circuit 40 only includes a single circuit structure, only one first-class control line 50 can be provided, and it is electrically connected to all first control units 41. When the detection circuit 40 includes multiple circuit structures including a first circuit structure 40a and a second circuit structure 40b, multiple first-class control lines 50 need to be provided and include a first control line 51 and a second control line 52. Among them, the multiple first control terminals in the first circuit structure 40a are electrically connected to the first control line 51, and the multiple first control terminals in the second circuit structure 40b are electrically connected to the second control line 52.

[0102] Furthermore, in the embodiment of the present application, the orthographic projection of the first-class control line 50 on the substrate 10 is not located on the same side of all pixel circuits 20 in the first direction X, but is located between adjacent pixel circuits 20 in the first direction X. The pixel circuits 20 are often arranged in the display area A1 of the prefabricated panel 100. Therefore, the first-class control line 50 can be located in the display area A1 of the prefabricated panel 100, rather than in the border area around the display area A1. This helps to reduce the size of the border area occupied and helps achieve a narrow border effect. Furthermore, for the case of micro-light-emitting elements F such as micron light-emitting diodes or sub-millimeter light-emitting diodes, this design helps to achieve a borderless display effect.

[0103] In some embodiments, as Figure 10 As shown, the prefabricated panel 100 has a display area A1 and a peeling area A2 located on at least one side of the display area A1 along a second direction Y. The pixel circuit 20 is located in the display area A1, and a plurality of first-type signal lines 30 are arranged side by side along the second direction Y. The prefabricated panel 100 also includes a first bonding pad H1 located in the peeling area A2, and the first-type control line 50 is connected to the first bonding pad H1.

[0104] Display area A1 is the display area A1 domain of prefabricated panel 100, and pixel circuit 20 and light-emitting element F are both disposed within display area A1. Stripping area A2 is a portion of the frame area of prefabricated panel 100. There can be only one stripping area A2 located on one side of display area A1 in the second direction Y, or there can be two stripping areas A2 located on both sides of display area A1 in the second direction Y. During the subsequent preparation of display panel 200, stripping area A2 needs to be removed so that the final display panel 200 and display device 300 do not have stripping area A2, thereby reducing the frame size and achieving a narrow-frame or even borderless display effect.

[0105] Furthermore, a first overlapping pad H1 is provided in the stripping area A2, and the first type of control line 50 is connected to the first overlapping pad H1. In this way, during the detection process, the external structure can transmit the corresponding control signal to the first type of control line 50 through the first overlapping pad H1, so that the first control unit 41 is in a conductive state, thereby realizing series conduction between different first type signal lines 30, and meeting the detection needs of multiple first type signal lines 30.

[0106] Furthermore, during the subsequent manufacturing process of the display panel 200, since the peeling area A2 is removed, the first bonding pad H1 located within the peeling area A2 is also removed. In other words, the first bonding pad H1 does not exist in the subsequently formed display panel 200. This design not only reduces the adverse effect of the first bonding pad H1 on the frame size, but also prevents the first-type control line 50 from receiving external signals from the first bonding pad H1, thereby maintaining the first control unit 41 in a shut-off state. This satisfies the need for insulation between the different first-type signal lines 30 during use of the display panel 200 and the display device 300.

[0107] In some optional embodiments, two peeling areas A2 are provided and are located on both sides of the display area A1 , and two first bonding pads H1 are provided and are located in the two peeling areas A2 and are connected to the same first-type control line 50 .

[0108] In some embodiments, as Figure 2 and Figure 10As shown, the prefabricated panel 100 has a display area A1 and a peeling area A2 located on at least one side of the display area A1 along a second direction Y. The pixel circuit 20 is located within the display area A1, and a plurality of first-type signal lines 30 are arranged side by side along the second direction Y. The prefabricated panel 100 also includes a dummy signal line 60 at least partially located within the peeling area A2. The dummy signal line 60 has a third end D3 and a fourth end D4 that are opposite to each other. The third end D3 and the pixel circuit 20 are located on the same side of the substrate 10, while the fourth end D4 and the third end D3 are located on different sides of the substrate 10. The fourth end D4 is electrically connected to the first-type signal line 30 via the detection circuit 40, and the third end D3 is provided with a second bonding pad H2.

[0109] The dummy signal lines 60 are side traces located within the stripping area A2. Unlike the first-type signal lines 30, the first-type signal lines 30 can be used to transmit specific signals to the pixel circuits 20 to drive the operation of the pixel circuits 20, while the dummy signal lines 60 are not used to transmit specific signals to the pixel circuits 20. Optionally, the dummy signal lines 60 and the first-type signal lines 30 can be formed together in the same layer and during the same process.

[0110] The virtual signal line 60 includes a third end D3 and a fourth end D4 that are opposite to each other in its extension direction. The fourth end D4 is electrically connected to the first-type signal line 30 through the detection circuit 40. Optionally, the fourth end D4 of the virtual signal line 60 can be connected to the connection sacrificial portion 42, and the virtual signal line 60 is electrically connected to the first-type signal line 30 through the connection sacrificial portion 42. Alternatively, the fourth end D4 of the virtual signal line 60 can be connected to the first control unit 41, and the virtual signal line 60 is electrically connected to the first-type signal line 30 through the first control unit 41. The figure shows a case where the fourth end D4 of the virtual signal line 60 is connected to the connection sacrificial portion 42.

[0111] In the embodiment of the present application, the third end D3 of the virtual signal line 60 is provided with a second lap pad H2. The external detection signal can be transmitted to the virtual signal line 60 through the second lap pad H2, and then transmitted to the plurality of first-class signal lines 30 through the virtual signal line 60 and the detection circuit 40, thereby realizing the detection function. In addition, since at least part of the structure of the virtual signal line 60 is located in the peeling area A2, the second lap pad H2 is also located in the peeling area A23. In this way, after the detection is completed, the second lap pad H2 can be removed, so that the second lap pad H2 does not exist in the subsequently formed display panel 200. This design can, on the one hand, reduce the adverse effect of the second lap pad H2 on the frame size. On the other hand, the first-class signal line 30 will no longer receive the external detection signal from the second lap pad H2, thereby improving the reliability of the internal signal transmission of the first-class signal line 30.

[0112] In some embodiments, as Figure 10As shown, the prefabricated panel 100 further includes a second-type signal line 70, which includes a first subsegment 71 connected to the first end D1 and a second subsegment 72 located on a side of the first subsegment 71 away from the first end D1. The first control unit 41 can turn on or off different first subsegments 71 of the second-type signal line 70.

[0113] The second-type signal line 70 is connected to the first end D1 and is electrically connected to the first-type signal line 30. There are multiple second-type signal lines 70, and multiple first-type signal lines 30 are arranged in a one-to-one correspondence with multiple second-type signal lines 70. Optionally, the second-type signal line 70 can be electrically connected to the pixel circuit 20, that is, the second-type signal line 70 is a connecting line between the first-type signal line 30 and the pixel circuit 20.

[0114] The second-type signal line 70 includes a first subsegment 71 and a second subsegment 72. The first subsegment 71 is connected to the first end D1, while the second subsegment 72 is located on the side of the first subsegment 71 facing away from the first end D1. The second subsegments 72 in different second-type signal lines 70 can have various relative relationships. For example, when the first-type signal line 30 and the second-type signal line 70 are used to transmit data signals, the second subsegments 72 in different second-type signal lines 70 can be insulated from each other. However, when the first-type signal line 30 and the second-type signal line 70 are used to transmit power signals, the second subsegments 72 in different second-type signal lines 70 can be connected and integrated.

[0115] Furthermore, during use of the display panel 200, the first subsegment 71 and the second subsegment 72 of a single first-type signal line 30 are in a conductive state. However, during testing, depending on actual needs, the first subsegment 71 and the second subsegment 72 of a single first-type signal line 30 can be conductive or relatively disconnected. For example, when the second subsegments 72 of different second-type signal lines 70 are insulated from each other, the first subsegment 71 and the second subsegment 72 can remain conductive during testing. However, when the second subsegments 72 of different second-type signal lines 70 are connected and integrated, the first subsegment 71 and the second subsegment 72 need to remain disconnected during testing to reduce the adverse effects of conductivity between different second-type signal lines 70 on the accuracy of test results such as circuit breakage detection. Figure 10 FIG. 7 shows a situation where the first sub-segment 71 and the second sub-segment 72 are connected as one body to maintain a conductive state.

[0116] Furthermore, in the embodiment of the present application, the first subsegments 71 of some different second-type signal lines 70 are connected or disconnected by the first control unit 41. Based on this, during the detection process, some of the first subsegments 71 can be connected to each other by the first control unit 41, thereby achieving joint detection of multiple first-type signal lines 30 and multiple first subsegments 71. This design can meet the detection requirements of both the first-type signal lines 30 and at least part of the second-type signal lines 70, thereby improving practicality.

[0117] In some embodiments, see Figure 11 , the second subsection 72 of the different second type signal lines 70 is connected, and the prefabricated panel 100 further includes a second control unit 81, which is connected to the first subsection 71 and the second subsection 72. Figure 11 This is only a partial view, and the second sub-segment 72 of the second type signal line 70 is not shown. Figure 11 The second sub-segments 72 of the different second-category signal lines 70 are connected and arranged within the range shown. Optionally, the second sub-segments 72 of the different second-category signal lines 70 can be connected and arranged at positions close to the upper edge of the prefabricated panel 100 .

[0118] The second control unit 81 is a control element for controlling the conduction between the first sub-segment 71 and the second sub-segment 72. Optionally, the second control unit 81 may include a thin-film transistor. Furthermore, both the first control unit 41 and the second control unit 81 include thin-film transistors, and the semiconductor material in the thin-film transistors and the conductor material corresponding to the control terminals in both thin-film transistors may be fabricated in the same layer, thereby simplifying the fabrication process and reducing fabrication costs.

[0119] To address the connection configuration of the second subsegments 72 of different second-type signal lines 70, the present embodiment of the present application adds a second control unit 81, which controls the conductivity between the first subsegment 71 and the second subsegment 72. Therefore, during the detection process, the second control unit 81 can disconnect the first subsegment 71 and the second subsegment 72, thereby reducing the adverse effect of the second subsegments 72 of different second-type signal lines 70 on detection accuracy. Furthermore, when the display panel 200 is in use, the second control unit 81 can connect the first subsegment 71 and the second subsegment 72, thereby meeting the transmission requirements of the internal signals of the second-type signal lines 70.

[0120] It should be noted that the number of second control units 81 often matches the number of second-type signal lines 70, and different second control units 81 can be controlled together by the same control signal, or can be controlled separately by different control signals. The embodiments of the present application do not limit this.

[0121] In some embodiments, as Figure 11As shown, the prefabricated panel 100 further includes a second type of control line 82 , which is electrically connected to a plurality of second control units 81 .

[0122] The second-type control lines 82 are signal lines that connect to the second control units 81 and transmit control signals thereto. Optionally, the prefabricated panel 100 further includes first-type control lines 50 , which are electrically connected to the plurality of first control units 41 . The first-type control lines 50 and the second-type control lines 82 are arranged in parallel and both extend along the second direction Y. Further, optionally, the second-type control lines 82 are located between adjacent pixel circuits 20 .

[0123] In the embodiment of the present application, the second-type control line 82 is used to transmit a control signal to the second control unit 81 to meet the switching needs between the on state and the off state of the first sub-segment 71 and the second sub-segment 72. A single second-type control line 82 is connected to multiple second control units 81, that is, multiple second control units 81 are driven by the same control signal. This allows the first sub-segments 71 and second sub-segments 72 on different second-type signal lines 70 to be simultaneously turned on and off, thereby improving detection accuracy and the operational reliability of the display panel 200. It also helps to reduce the number of second-type control lines 82 and simplify the internal wiring layout of the prefabricated panel 100.

[0124] In some embodiments, the prefabricated panel 100 has a display area A1 and a peeling area A2 located on at least one side of the display area A1 along the second direction Y. The pixel circuit 20 and the second-type signal line 70 are both located within the display area A1, and a plurality of first-type signal lines 30 are arranged side by side along the second direction Y. The prefabricated panel 100 further includes a third bonding pad H3 located within the peeling area A2, and the second-type control line 82 is connected to the third bonding pad H3.

[0125] A third overlapping pad H3 is provided in the stripping area A2, and the second-type control line 82 is connected to the third overlapping pad H3. In this way, during the detection process, the external structure can transmit the corresponding control signal to the second-type control line 82 through the third overlapping pad H3, so that the second control unit 81 is in an off state, thereby realizing the disconnection between the first sub-segment 71 and the second sub-segment 72, reducing the adverse effects of different second-type signal lines 70 on the detection results, and improving the detection accuracy.

[0126] Furthermore, in the subsequent manufacturing process of the display panel 200, since the peeling area A2 is removed, the third bonding pad H3 located within the peeling area A2 is also removed. In other words, the third bonding pad H3 does not exist in the subsequently formed display panel 200. This design can reduce the adverse effect of the third bonding pad on the frame size.

[0127] In some optional embodiments, two peeling areas A2 are provided and are located on both sides of the display area A1 , and two third bonding pads H3 are provided and are located in the two peeling areas A2 and are connected to the same second-type control line 82 .

[0128] In some embodiments, the second-type signal line 70 is electrically connected to the pixel circuit 20 and is used to transmit one of a data signal data, a power signal pvdd, and a reset signal vref.

[0129] It should be noted that when the second-type signal line 70 is used to transmit the data signal data or the reset signal vref, different second-type signal lines 70 can be insulated from each other. Furthermore, the first subsegment 71 and the second subsegment 72 of the second-type signal line 70 can be connected as a single entity, i.e., they always remain in a conductive state. When the second-type signal line 70 is used to transmit the power signal pvdd, the second subsegments 72 of different second-type signal lines 70 can be conductively connected to each other. Furthermore, a second control unit 81 is required between the first subsegment 71 and the second subsegment 72 of the second-type signal line 70. During the detection phase, the second control unit 81 controls the first subsegment 71 and the second subsegment 72 to be disconnected, thereby improving detection accuracy. During use of the display panel 200, the second control unit 81 controls the first subsegment 71 and the second subsegment 72 to be conductive, thereby meeting signal transmission requirements.

[0130] Second, see Figure 12 The present invention provides a display panel 200 in an embodiment. The display panel 200 includes a substrate 10, a pixel circuit 20, a first-type signal line 30, a first control unit 41, and a sacrificial trace 90. The pixel circuit 20 is disposed on one side of the substrate 10. The first-type signal line 30 has a first end D1 and a second end D2 opposite each other. The first end D1 and the pixel circuit 20 are located on the same side of the substrate 10, and the second end D2 and the first end D1 are located on different sides of the substrate 10. The first control unit 41 connects different first ends D1 in series. Multiple sacrificial traces 90 are connected to multiple second ends D2, and the ends of the sacrificial traces 90 away from the second ends D2 are suspended.

[0131] The display panel 200 provided in the embodiments of the present application can be processed from the prefabricated panel 100 in any of the aforementioned embodiments, wherein the sacrificial trace 90 is a structure remaining in the display panel 200 after a portion of the sacrificial connection portion has been removed. Furthermore, the sacrificial trace 90 can extend along the first direction X, with one end of the sacrificial trace 90 in the direction of its extension correspondingly connected to the second end D2, while the other end is suspended. The "suspended" mentioned here means that one end of the sacrificial trace 90 is not connected to other trace structures or device structures.

[0132] In the embodiment of the present application, although one end of the sacrificial trace 90 is connected to the second end D2, the other end is suspended. Thus, different first-category signal lines 30 are not connected through the sacrificial trace 90. At the same time, the first control unit 41 can be in an off state, so that different first-category signal lines 30 are not connected through the first control unit 41. This design can achieve insulation between different first-category signal lines 30 within the display panel 200 while meeting detection requirements, thereby meeting the transmission requirements of corresponding signals of different first-category signal lines 30.

[0133] Thirdly, please refer to Figure 13 , an embodiment of the present application provides a display device 300, and the display device 300 includes the display panel 200 in any of the aforementioned embodiments.

[0134] It should be noted that the display device 300 provided in the embodiment of the present application has the beneficial effects of the display panel 200 in any of the aforementioned embodiments. Please refer to the aforementioned introduction to the beneficial effects of the display panel 200 and the prefabricated panel 100 for details, and the embodiment of the present application will not be repeated.

[0135] For the fourth aspect, please refer to Figure 14 , an embodiment of the present application provides a method for detecting a display panel 200, the preparation method comprising:

[0136] S100: Prefabricated panels are available.

[0137] In step S100, the prefabricated panel 100 is the prefabricated panel 100 in any of the aforementioned embodiments.

[0138] S110: Control the first control unit to be turned on.

[0139] In step S110, the plurality of first type signal lines 30 form a series conductive circuit through the first control unit 41 and the sacrificial connection portion. Optionally, the plurality of first control units 41, the plurality of sacrificial connection portions and the plurality of first type signal lines 30 can together form a serpentine extending series channel.

[0140] S120: Detect whether the series conductive circuit is in a closed state or an open state.

[0141] In step S120, a detection signal can be provided to the series conductive circuit by means of the first bonding pad H1 and other structures, and then the voltage and current and other parameters in the series conductive circuit are tested to determine whether the series conductive circuit is in a closed state or an open state.

[0142] S130: When the series conductive circuit is in the on state, the sacrificial portion 42 is disconnected.

[0143] In step S130, if the series conductive circuit is in the on state, it indicates that the multiple first-type signal lines 30 corresponding to the series conductive circuit are not broken. Based on this, the connecting sacrificial portion 42 can be disconnected to form sacrificial traces 90 corresponding to the multiple second ends D2. The ends of the sacrificial traces 90 away from the second ends D2 are suspended. This allows for disconnection between different first-type signal lines 30, thereby meeting the signal transmission requirements within the multiple first-type signal lines 30 in the subsequently formed display panel 200.

[0144] Of course, in other embodiments, when the series conductive circuit is in an open circuit state, the open circuit location can be found and repaired, and the sacrificial connection portion 42 can be disconnected after the repair is completed to meet the production requirements of the display panel 200.

[0145] Although the embodiments disclosed in this application are as described above, the contents described are merely embodiments adopted to facilitate understanding of this application and are not intended to limit the present invention. Any person skilled in the art to which this application belongs may make any modifications and changes in the form and details of the implementation without departing from the spirit and scope disclosed in this application. However, the scope of protection of this application shall still be based on the scope defined by the appended claims.

[0146] The above description is only a specific embodiment of the present application. Those skilled in the art will clearly understand that for the convenience and brevity of description, the replacement of other connection methods described above can refer to the corresponding process in the aforementioned method embodiment, and will not be repeated here. It should be understood that the scope of protection of the present application is not limited to this. Any person skilled in the art can easily think of various equivalent modifications or replacements within the technical scope disclosed in this application, and these modifications or replacements should be included in the scope of protection of this application.

Claims

1. A prefabricated panel, characterized in that: include: substrate; A pixel circuit is provided on one side of the substrate; A first type of signal line having a first end and a second end opposite to each other, wherein the first end and the pixel circuit are located on the same side of the substrate, and the second end and the first end are located on a different side of the substrate; The detection circuit includes a first control unit and a connection sacrificial part, wherein the first control unit is connected in series with the first end, and the connection sacrificial part is connected in series with the second end; Wherein, a plurality of the first-type signal lines can be connected in series through the detection circuit.

2. The prefabricated panel according to claim 1, characterized in that: The plurality of first-type signal lines include a first signal line, a second signal line, and a third signal line arranged in sequence, the plurality of first control units include a first unit, and the plurality of connection sacrificial portions include a first sacrificial portion; The first unit is connected in series to the first end of the first signal line and the first end of the second signal line, and the first sacrificial portion is connected in series to the second end of the second signal line and the second end of the third signal line.

3. The prefabricated panel according to claim 2, characterized in that: The first signal line, the second signal line and the third signal line are arranged adjacent to each other in sequence; or, The number of the first-type signal lines located between the first signal line and the second signal line is the same as the number of the first-type signal lines located between the second signal line and the third signal line.

4. The prefabricated panel according to claim 1, characterized in that The detection circuit includes a first circuit structure and a second circuit structure that are insulated. The first circuit structure and the second circuit structure both include the first control unit and the connection sacrificial part, and the first circuit structure and the second circuit structure are used to connect different first-type signal lines in series.

5. The prefabricated panel according to claim 4, characterized in that: The plurality of first-type signal lines include a first signal line, a fourth signal line, a second signal line, a fifth signal line, a third signal line, and a sixth signal line arranged in sequence side by side, the first circuit structure includes a first unit and a first sacrificial portion, and the second circuit structure includes a second unit and a second sacrificial portion; The first unit is connected in series with the first end of the first signal line and the first end of the second signal line, the first sacrificial portion is connected in series with the second end of the second signal line and the second end of the third signal line, the second unit is connected in series with the first end of the fourth signal line and the first end of the fifth signal line, and the second sacrificial portion is connected in series with the second end of the fifth signal line and the second end of the sixth signal line.

6. The prefabricated panel according to claim 4, characterized in that: The multiple pixel circuits include a first type of pixel circuit and a second type of pixel circuit for driving sub-pixels of different colors, and the first type of signal line connected to the first circuit structure is electrically connected to the multiple first type of pixel circuits; and / or, the first type of signal line connected to the second circuit structure is electrically connected to the multiple second type of pixel circuits.

7. The prefabricated panel according to claim 4, characterized in that The first control unit in the first circuit structure includes a first transistor, wherein a first electrode and a second electrode of the first transistor are respectively connected to first ends of different first-type signal lines; the first control unit in the second circuit structure includes a second transistor, wherein a first electrode and a second electrode of the second transistor are respectively connected to first ends of different first-type signal lines; The prefabricated panel further includes a first control line and a second control line that are insulated from each other. The first control line is electrically connected to the control ends of the first transistors, and the second control line is electrically connected to the control ends of the second transistors.

8. The prefabricated panel according to claim 1, characterized in that: The connection sacrificial portion includes a first sub-portion extending along a first direction and a second sub-portion extending along a second direction, the first sub-portion is connected to the second end, and the second sub-portion is connected to a different first sub-portion, and a plurality of the first-type signal lines are arranged side by side along the second direction, and the first direction intersects the second direction; Wherein, different first sub-portions are overlapped in the second direction.

9. The prefabricated panel according to claim 1, characterized in that: It also includes a first type of control line, which is electrically connected to a plurality of the first control units, and the orthographic projection of the first type of control line on the substrate is located between the orthographic projections of adjacent pixel circuits on the substrate.

10. The prefabricated panel according to claim 9, characterized in that The prefabricated panel has a display area and a peeling area located on at least one side of the display area along a second direction, the pixel circuit is located in the display area, and a plurality of the first-type signal lines are arranged side by side along the second direction; The prefabricated panel further includes a first lap pad disposed in the peeling area, and the first type of control line is connected to the first lap pad.

11. The prefabricated panel according to claim 1, characterized in that The prefabricated panel has a display area and a peeling area located on at least one side of the display area along a second direction, the pixel circuit is located in the display area, and a plurality of the first-type signal lines are arranged side by side along the second direction; The prefabricated panel further includes a dummy signal line at least partially disposed in the peeling area, the dummy signal line having a third end and a fourth end opposite to each other, the third end and the pixel circuit being located on the same side of the substrate, and the fourth end and the third end being located on a different side of the substrate; The fourth end is electrically connected to the first type signal line through the detection circuit, and the third end is provided with a second bonding pad.

12. The prefabricated panel according to claim 1, characterized in that Also included is a second type of signal line, the second type of signal line including a first subsegment connected to the first end and a second subsegment located on a side of the first subsegment away from the first end; Part of the first sub-segments of the second-type signal lines are turned on or off by the first control unit.

13. The prefabricated panel according to claim 12, characterized in that The second sub-segments of the second-type signal lines are connected and arranged, and the prefabricated panel further includes a second control unit connected to the first sub-segment and the second sub-segment.

14. The prefabricated panel according to claim 13, characterized in that It also includes a second type of control line, which is electrically connected to multiple second control units.

15. The prefabricated panel according to claim 14, characterized in that The prefabricated panel has a display area and a peeling area located on at least one side of the display area along a second direction, the pixel circuit and the second-type signal line are both located in the display area, and a plurality of the first-type signal lines are arranged side by side along the second direction; The prefabricated panel further includes a third lap pad disposed in the peeling area, and the second-type control line is connected to the third lap pad.

16. The prefabricated panel according to claim 12, wherein: The second-type signal line is electrically connected to the pixel circuit and is used to transmit one of a data signal, a power signal and a reset signal.

17. A display panel, characterized in that: include: substrate; A pixel circuit is provided on one side of the substrate; A first type of signal line having a first end and a second end opposite to each other, wherein the first end and the pixel circuit are located on the same side of the substrate, and the second end and the first end are located on a different side of the substrate; a first control unit, the first control unit being connected in series with the first end; A plurality of sacrificial traces are correspondingly connected to the plurality of second ends, and one end of the sacrificial trace away from the second end is suspended.

18. A display device, characterized in that: Comprising the display panel as claimed in claim 17.

19. A method for detecting a display panel, characterized in that: include: Providing a prefabricated panel according to any one of claims 1 to 16; Controlling the first control unit to conduct, so that the plurality of the first-type signal lines form a series conduction circuit; detecting whether the series conductive circuit is in a closed state or an open state; When the series conductive circuit is in a conducting state, the connection sacrificial portion is disconnected to form sacrificial traces corresponding to the plurality of second ends, and one end of the sacrificial trace away from the second end is suspended.

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