Display device and repairing method thereof

Abstract

The invention provides a display device and a repairing method thereof. The display device comprises a first light-emitting unit, a second light-emitting unit, a first wire, a first standby connecting pad and a second standby connecting pad. The first wire is electrically connected to the first light-emitting unit and the second light-emitting unit. The first standby connecting pad is electrically connected with the first wire. The second standby connecting pad is electrically connected with the first wire. The first light-emitting unit is provided with a first electrode and a second electrode, the second light-emitting unit is provided with a third electrode and a fourth electrode, the first wire is electrically connected with the second electrode and the third electrode, and the second electrode and the third electrode are different in polarity. The display quality of the display device provided by the invention can be improved.

Description

Technical Field

[0001] This disclosure relates to a display device and a method for repairing the same. Background Technology

[0002] In some display devices, the brightness of light emitted can be increased by connecting at least two light-emitting elements in series; however, when at least one of these light-emitting elements is defective, problems such as how to efficiently repair it (e.g., reduce detection time and / or repair time), reduce costs, and / or reduce the decline in display quality after repair remain to be solved. Summary of the Invention

[0003] This disclosure pertains to a display device.

[0004] A display device according to some embodiments disclosed herein includes a first light-emitting unit, a second light-emitting unit, a first conductive wire, a first spare contact pad, and a second spare contact pad. The first conductive wire is electrically connected to the first light-emitting unit and the second light-emitting unit. The first spare contact pad is electrically connected to the first conductive wire. The second spare contact pad is electrically connected to the first conductive wire. The first light-emitting unit has a first electrode and a second electrode, and the second light-emitting unit has a third electrode and a fourth electrode. The first conductive wire is electrically connected to the second electrode and the third electrode, and the second electrode and the third electrode have different polarities.

[0005] This disclosure relates to a method for repairing a display device, which improves the display quality of the repaired display device.

[0006] According to some embodiments of the present disclosure, a method for repairing a display device includes a first light-emitting unit, a second light-emitting unit, a first set of spare pads, and a second set of spare pads. The first set of spare pads is electrically connected to the first light-emitting unit, and the second set of spare pads is electrically connected to the second light-emitting unit. The method for repairing a display device according to some embodiments of the present disclosure includes the following steps: A carrier board is provided, which includes a third light-emitting unit and a fourth light-emitting unit. The third light-emitting unit is bonded to the first set of spare pads. The fourth light-emitting unit is bonded to the second set of spare pads. The first set of spare pads and the second set of spare pads are connected in series after the third and fourth light-emitting units are bonded. Attached Figure Description

[0007] Figure 1 This is a schematic flowchart of a repair method for a display device according to the first embodiment of this disclosure;

[0008] Figure 2A This is a schematic flowchart of a repair method for a display device according to the second embodiment of this disclosure;

[0009] Figure 2B Based on Figure 2A A schematic diagram of the cross-section cut by section line A-A';

[0010] Figure 3 This is a schematic flowchart of a repair method for a display device according to the third embodiment of this disclosure;

[0011] Figure 4 This is a schematic flowchart of a repair method for a display device according to the fourth embodiment of this disclosure;

[0012] Figure 5 This is a schematic flowchart of a repair method for a display device according to the fifth embodiment of this disclosure;

[0013] Figure 6 This is a schematic flowchart of a repair method for a display device according to the sixth embodiment of this disclosure;

[0014] Figure 7 This is a schematic flowchart of a repair method for a display device according to the seventh embodiment of this disclosure;

[0015] Figure 8 This is a schematic flowchart of a repair method for a display device according to the eighth embodiment of this disclosure;

[0016] Figure 9A This is a schematic flowchart of a repair method for a display device according to the ninth embodiment of this disclosure;

[0017] Figure 9B The shape of the light-emitting unit is shown in one embodiment of this disclosure. Detailed Implementation

[0018] Reference will now be made in detail to exemplary embodiments of the invention, examples of which are illustrated in the accompanying drawings. Wherever possible, the same element references are used in the drawings and description to denote the same or similar parts.

[0019] The present disclosure will be described in detail below with reference to specific embodiments and accompanying drawings. To make the disclosure clearer and easier to understand, the accompanying drawings are simplified schematic diagrams, and the components may not be drawn to scale. Furthermore, the number and size of the components in the drawings are for illustrative purposes only and are not intended to limit the scope of the disclosure.

[0020] Throughout this specification and the appended claims, certain terms are used to refer to specific elements. Those skilled in the art will understand that electronic device manufacturers may use different names to refer to the same elements, and this document is not intended to distinguish between elements that function identically but have different names.

[0021] In the following description and claims, the words "containing" and "including" are open-ended terms and should therefore be interpreted as "containing but not limited to...".

[0022] The use of ordinal numbers, such as "first" and "second," in the specification and claims to modify elements of the claims does not imply or represent any prior ordinal number of the claimed element, nor does it represent the order of one claimed element with another, or the order of manufacturing processes. The use of such ordinal numbers is only to enable a claim element with a certain name to be clearly distinguished from another claim element with the same name.

[0023] The directional terms used in the following embodiments, such as up, down, left, right, front, or back, are only for reference to the accompanying drawings. Therefore, the directional terms used are for illustrative purposes and not for limiting the scope of this disclosure.

[0024] Furthermore, when an element or membrane is referred to as being "on" or "above" another element or membrane, or as being "connected" to another element or membrane, it should be understood that the element or membrane is directly located on or directly connected to the other element or membrane, or that there may be other elements or membranes between them (in a non-direct case). Conversely, when an element or membrane is referred to as being "directly" "on" or "directly connected" to another element or membrane, it should be understood that there are no inserted elements or membranes between them.

[0025] The term "electrical connection" encompasses any means of direct or indirect electrical connection. An electrical connection between two components can be a direct contact for transmitting electrical signals, with no other components between them. Alternatively, an electrical connection between two components can be bridged through an intermediate component for transmitting electrical signals. In this document, "electrical connection" may also be referred to as "coupling."

[0026] In the text, the terms “about,” “in essence,” or “roughly” usually mean falling within 10%, 5%, 3%, 2%, 1%, or 0.5% of a given value or range.

[0027] In this disclosure, the length, thickness, width, height, distance, and area may be measured using an optical microscope (OM), an electron microscope (e.g., a scanning electron microscope (SEM)) or other methods, but are not limited thereto.

[0028] Unless otherwise defined, all terms used herein (including technical and scientific terms) have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure pertains. It is understood that these terms, for example, as defined in commonly used dictionaries, should be interpreted as having a meaning consistent with the relevant art and the background or context of this disclosure, and should not be interpreted in an idealized or overly formal manner, unless specifically defined in the embodiments of this disclosure.

[0029] The electronic devices disclosed herein may include, for example, light-emitting devices, display devices, sensing devices, antenna devices, touch devices, splicing devices, or other suitable electronic devices, but are not limited thereto. Display devices may include light-emitting diodes, color conversion layers, or other suitable materials, or combinations thereof, but are not limited thereto. Electronic devices may be, for example, bendable, stretchable, foldable, rollable, and / or flexible electronic devices, but are not limited thereto. Display devices may be used, for example, in laptops, public displays, splicing displays, automotive displays, touch displays, transparent displays, double-sided displays, medical displays, virtual reality displays, augmented reality displays, 3D displays, monochrome displays, color displays, televisions, monitors, smartphones, tablets, light source modules, lighting equipment, military equipment, or, for example, electronic devices used in the aforementioned products, but are not limited thereto. Display devices may include, for example, liquid crystal molecules, light-emitting diodes, color conversion layers, other suitable display media, or combinations thereof, but are not limited thereto. The color conversion layer may include wavelength conversion materials and / or filter materials. The color conversion layer may include, for example, fluorescent materials, phosphorescent materials, quantum dot (QD) materials, other suitable materials, or combinations thereof, but is not limited thereto. The display device may include liquid crystal display devices, electrophoretic display devices, or other suitable devices, but is not limited thereto. The sensing device may be, for example, a sensing device for detecting capacitance changes, light, heat, or ultrasound, but is not limited thereto. The sensing device may include, for example, a biosensor, a touch sensor, a fingerprint sensor, other suitable sensors, or combinations of the above types of sensors. The antenna device may be, for example, a liquid crystal antenna or other types of antennas, but is not limited thereto. The splicing device may include, for example, a splicing display device or a splicing antenna device, but is not limited thereto. Furthermore, the shape of the electronic device may be, for example, rectangular, circular, polygonal, a shape with curved edges, curved, or other suitable shapes. The electronic device may have peripheral systems such as a drive system, a control system, a light source system, a shelving system, etc. Electronic devices may include electronic units, which may include passive and active components, such as capacitors, resistors, inductors, diodes, transistors, sensors, and light-emitting units. The following description uses a display device as an example of an electronic device and a light-emitting unit as an example of an electronic unit to illustrate the disclosure, but it is not limited thereto.

[0030] Figure 1This is a flowchart illustrating a repair method for a display device according to the first embodiment of this disclosure. It should be noted that this flowchart is merely an example and is not intended to limit the steps of the repair method for the display device.

[0031] Please refer to Figure 1 This embodiment provides a repair method for a display device 10a. In this embodiment, the display device 10a includes a first light-emitting unit E1, a second light-emitting unit E2, a first set of pads MP1, a second set of pads MP2, a first set of spare pads RP1, and a second set of spare pads RP2.

[0032] In this embodiment, the first light-emitting unit E1 and the second light-emitting unit E2 are arranged in the Y direction. The first light-emitting unit E1 and the second light-emitting unit E2 can emit various suitable colors of light (e.g., red, green, blue, white, near-infrared, far-infrared, UV, etc.). In this disclosure, multiple light-emitting units of a pixel can be used to provide the same color and are driven by the same driving circuit and driving element (e.g., driving transistor). In this embodiment, the first light-emitting unit E1 and the second light-emitting unit E2 are used to provide light of the same color, but are not limited thereto. In some embodiments, the first light-emitting unit E1 and the second light-emitting unit E2 may each include a self-emissive material. In this embodiment, the first light-emitting unit E1 and the second light-emitting unit E2 are light-emitting diodes (LEDs), but are not limited thereto. In some embodiments, the first light-emitting unit E1 and the second light-emitting unit E2 may each include an organic light-emitting diode (OLED), a micro light-emitting diode (micro LED), a mini light-emitting diode (mini LED), a quantum dot LED (including QLED, QDLED), or a combination thereof, but are not limited thereto. In this embodiment, the first light-emitting unit E1 and the second light-emitting unit E2 are rectangular in the Z-direction (top view direction), but are not limited thereto. In other embodiments, the first light-emitting unit E1 and / or the second light-emitting unit E2 may be circular, polygonal, or other suitable shapes in the Z-direction (top view direction).

[0033] The first light-emitting unit E1 and the second light-emitting unit E2 are respectively disposed on the first set of contact pads MP1 and the second set of contact pads MP2, and are electrically connected to the first set of contact pads MP1 and the second set of contact pads MP2. Specifically, the first light-emitting unit E1 has a first electrode E11 and a second electrode E12, and the second light-emitting unit E2 has a third electrode E21 and a fourth electrode E22. The first electrode E11 and the second electrode E12 of the first light-emitting unit E1 are electrically connected to the contact pads MP11 and MP12 of the first set of contact pads MP1, and the third electrode E21 and the fourth electrode E22 of the second light-emitting unit E2 are electrically connected to the contact pads MP21 and MP22 of the second set of contact pads MP2. In this embodiment, the first electrode E11 of the first light-emitting unit E1 and the third electrode E21 of the second light-emitting unit E2 have the same polarity, for example, both are p-polarities (anodes), and the second electrode E12 of the first light-emitting unit E1 and the fourth electrode E22 of the second light-emitting unit E2 have the same polarity, for example, both are n-polarities (cathodes), but this is not a limitation. Based on this, the second electrode E12 of the first light-emitting unit E1 and the third electrode E21 of the second light-emitting unit E2 have different polarities, making the first light-emitting unit E1 and the second light-emitting unit E2 connected in series. In some embodiments, the first light-emitting unit E1 and the second light-emitting unit E2 can be disposed on the first set of contact pads MP1 and the second set of contact pads MP2 by mass transfer. In this embodiment, the first set of contact pads MP1 and the second set of contact pads MP2 are arranged in the Y direction, but this is not a limitation. The first set of contact pads MP1 includes, for example, contact pads MP11 and MP12 that are separate from each other, and the second set of contact pads MP2 includes, for example, contact pads MP21 and MP22 that are separate from each other. In some embodiments, pads MP11 and MP12 are arranged in the Y direction, and pads MP21 and MP22 are arranged in the Y direction, but are not limited thereto. The materials of the first set of pads MP1 and the second set of pads MP2 may include, for example, metal, metal oxide or other suitable conductive materials, but are not limited thereto.

[0034] The first set of spare pads RP1 and the second set of spare pads RP2 are, for example, separate from each other. The first set of spare pads RP1 includes spare pads RP11 and RP12, which are separate from each other. The second set of spare pads RP2 includes spare pads RP21 and RP22, which are separate from each other. Spare pad RP11 is electrically connected to the first electrode E11 of the first light-emitting unit E1, and spare pad RP12 is electrically connected to the second electrode E12 of the first light-emitting unit E1. Spare pad RP21 is electrically connected to the third electrode E21 of the second light-emitting unit E2, and spare pad RP22 is electrically connected to the fourth electrode E22 of the second light-emitting unit E2. In this embodiment, the first set of spare pads RP1 and the second set of spare pads RP2 are arranged in the Y direction, but this is not a limitation. In some embodiments, spare pads RP11 and RP12 are arranged in the Y direction, and spare pads RP21 and RP22 are arranged in the Y direction, but this is not a limitation. The materials of the first set of spare pads RP1 and the second set of spare pads RP2 may be the same as or similar to the materials of the first set of pads MP1 and the second set of pads MP2, and will not be described in detail here.

[0035] In this embodiment, the first light-emitting unit E1 and the second light-emitting unit E2 have a pitch p1 in the Y direction, and the first set of spare pads RP1 and the second set of spare pads RP2 have a pitch p2 in the Y direction. It is worth noting that the pitch p1 can be defined as the distance in the Y direction between the center position c1 of the first light-emitting unit E1 and the center position c2 of the second light-emitting unit E2, or the distance in the Y direction between the same-side edges of the first light-emitting unit E1 and the second light-emitting unit E2. The pitch p2 can be defined as the distance in the Y direction between the center position c1' of the first set of spare pads RP1 (e.g., the center positions of spare pads RP11 and RP12) and the center position c2' of the second set of spare pads RP2 (e.g., the center positions of spare pads RP21 and RP22), but is not limited thereto. In some embodiments, the pitches p1 and p2 conform to the following relationship: p1*0.9≦p2≦p1*1.1. In this embodiment, the pitch p1 is equal to the pitch p2 (i.e., p1 = p2), but this is not a limitation.

[0036] In this embodiment, all light-emitting units before pixel repair have a maximum distance d1 in the Y direction. For example, the first light-emitting unit E1 and the second light-emitting unit E2 belong to the same pixel, where the maximum distance d1 can be the distance in the Y direction between the edge of the first light-emitting unit E1 away from the second light-emitting unit E2 and the edge of the second light-emitting unit E2 away from the first light-emitting unit E1, but is not limited thereto. In this embodiment, the first light-emitting unit E1 and the second light-emitting unit E2 have a first center position O1 (or, the pixel center position O1 before repair), and the first set of spare pads RP1 and the second set of spare pads RP2 have a second center position O2, where the distance between the first center position O1 and the second center position O2 in the Y direction is less than or equal to the maximum distance d1. Therefore, after transferring the third light-emitting unit E3 and the fourth light-emitting unit E4 to the first set of spare contact pads RP1 and the second set of spare contact pads RP2, the pixel composed of the third light-emitting unit E3 and the fourth light-emitting unit E4 does not have an offset in the Y direction compared with the pixel composed of the first light-emitting unit E1 and the second light-emitting unit E2, which can reduce the possibility of a decrease in the display quality of the display device. In this disclosure, the first center position O1 may be the center point of the pitch p1, and the second center position O2 may be the center point of the pitch p2, but is not limited thereto.

[0037] In this embodiment, the display device 10a may further include multiple conductive lines CL. The shape of the multiple conductive lines CL in the Z direction may be, for example, a straight line, a bent line, a curve, or other irregular shape. In this embodiment, the multiple conductive lines CL may include, for example, Figure 1 The conductors CL1, CL2, and CL3 are shown, but are not limited thereto. In some embodiments, conductors CL1, CL2, and CL3 are conductive patterns in the same layer and separated from each other, but are not limited thereto. In other embodiments, at least two of conductors CL1, CL2, and CL3 are conductive patterns in different layers.

[0038] The conductor CL1 is electrically connected, for example, to the pad MP12 of the first set of pads MP1, the pad MP21 of the second set of pads MP2, the spare pad RP12 of the first set of spare pads RP1, and the spare pad RP21 of the second set of spare pads RP2. Specifically, the conductor CL1 may overlap with the pads MP12 of the first set of pads MP1, the pad MP21 of the second set of pads MP2, the spare pad RP12 of the first set of spare pads RP1, and the spare pad RP21 of the second set of spare pads RP2 in the Z direction. In this embodiment, the conductor CL1 may have an "H" shape in the top view, but this is not a limitation.

[0039] In this embodiment, the wire CL1 is electrically connected to the first light-emitting unit E1 and the second light-emitting unit E2. Specifically, the wire CL1 can be electrically connected to the second electrode E12 of the first light-emitting unit E1 through the pad MP12 of the first set of pads MP1, and can be electrically connected to the third electrode E21 of the second light-emitting unit E2 through the pad MP21 of the second set of pads MP2.

[0040] The conductor CL2 is electrically connected, for example, to the pad MP11 of the first set of pads MP1 and the spare pad RP11 of the first set of spare pads RP1. Specifically, the conductor CL2 may overlap with the pad MP11 of the first set of pads MP1 and the spare pad RP11 of the first set of spare pads RP1 in the Z direction. In this embodiment, the conductor CL2 may have a shape that is "rotated 90 degrees clockwise in the F direction" in the top view, but this is not a limitation.

[0041] The conductor CL3 is electrically connected, for example, to the pad MP22 of the second set of pads MP2 and the spare pad RP22 of the second set of spare pads RP2. Specifically, the conductor CL3 may overlap with the pad MP22 of the second set of pads MP2 and the spare pad RP22 of the second set of spare pads RP2 in the Z direction. In this embodiment, the conductor CL2 may have a shape that is "rotated 90 degrees clockwise in the inverted F direction" in the top view, but this is not a limitation.

[0042] In this embodiment, wire CL1 is disposed between wire CL2 and wire CL3 in the Y direction, and wire CL1 is separated from wire CL2 and wire CL3.

[0043] In this embodiment, the first electrode E11 and the second electrode E12 of the first light-emitting unit E1 have a first arrangement direction, and the third electrode E21 and the fourth electrode E22 of the second light-emitting unit E2 have a second arrangement direction, and the first arrangement direction and the second arrangement direction are the same. Specifically, both the first arrangement direction and the second arrangement direction are in the Y direction.

[0044] Please continue to refer to Figure 1In some embodiments, defects in the first light-emitting unit E1 and the second light-emitting unit E2 can be checked by detecting them. For example, visual and / or electrical inspections can be performed on the first light-emitting unit E1 and the second light-emitting unit E2 to detect whether there are any dead pixels. For example, visual inspection of the first light-emitting unit E1 and the second light-emitting unit E2 can be performed using automated optical inspection (AOI) to observe whether the first light-emitting unit E1 and the second light-emitting unit E2 have visual defects such as damage, scratches, or misalignment; or, for example, electrical inspection of the first light-emitting unit E1 and the second light-emitting unit E2 can be performed using an open / short test (O / S test) to make the first light-emitting unit E1 and the second light-emitting unit E2 emit light to confirm the quality of the emitted light. In this embodiment, when at least one of the first light-emitting unit E1 and the second light-emitting unit E2 is detected to be defective, the following repair method for the display device can be performed.

[0045] Please continue to refer to Figure 1 A carrier plate 100 is provided, wherein the carrier plate 100 includes a plurality of light-emitting elements. In this embodiment, the carrier plate 100 may include a third light-emitting unit E3 and a fourth light-emitting unit E4, which are respectively transferred to a first set of spare pads RP1 and a second set of spare pads RP2.

[0046] Please continue to refer to Figure 1 The third light-emitting unit E3 is bonded to the first set of spare pads RP1, and the fourth light-emitting unit E4 is bonded to the second set of spare pads RP2. In some embodiments, the third light-emitting unit E3 and the fourth light-emitting unit E4 can be disposed on the first set of spare pads RP1 and the second set of spare pads RP2 respectively by mass transfer, so that they are electrically connected to the first set of spare pads RP1 and the second set of spare pads RP2 respectively. Specifically, the first electrode E31 of the third light-emitting unit E3 is electrically connected to the spare pad RP11 in the first set of spare pads RP1, the second electrode E32 of the third light-emitting unit E3 is electrically connected to the spare pad RP12 in the first set of spare pads RP1, the third electrode E41 of the fourth light-emitting unit E4 is electrically connected to the spare pad RP21 in the second set of spare pads RP2, and the fourth electrode E42 of the fourth light-emitting unit E4 is electrically connected to the spare pad RP22 in the second set of spare pads RP2.

[0047] After the third light-emitting unit E3 and the fourth light-emitting unit E4 are respectively connected to the first set of spare pads RP1 and the second set of spare pads RP2, since the second electrode E32 of the third light-emitting unit E3 and the fourth electrode E41 of the fourth light-emitting unit E4 have different polarities, the third light-emitting unit E3 and the fourth light-emitting unit E4 are connected in series.

[0048] Please continue to refer to Figure 1 After the third light-emitting unit E3 and the fourth light-emitting unit E4 are respectively bonded to the first set of spare pads RP1 and the second set of spare pads RP2, the wires electrically connected to the first light-emitting unit E1 (e.g., the first wire CL1 and / or the second wire CL2) and the wires electrically connected to the second light-emitting unit E2 (e.g., the first wire CL1 and / or the third wire CL3) can be cut off by laser cutting process to reduce the impact on the third light-emitting unit E3 and / or the fourth light-emitting unit E4.

[0049] In this embodiment, the third light-emitting unit E3 and the fourth light-emitting unit E4 have a pitch p3 in the Y direction. It is worth noting that the pitch p3 can be defined as the distance in the Y direction between the center position c3 of the third light-emitting unit E3 and the center position c4 of the fourth light-emitting unit E4, or the distance in the Y direction between the same-side edges of the third light-emitting unit E3 and the fourth light-emitting unit E4, but is not limited thereto. In some embodiments, the pitch p3 and the pitch p1 satisfy the following relationship: p1*0.9≤p3≤p1*1.1. In this embodiment, the pitch p3 is equal to the pitch p1 (i.e., p3=p1).

[0050] Based on the above, when a defect is detected in at least one of the first light-emitting unit E1 and the second light-emitting unit E2, by performing the repair method of this embodiment, the third light-emitting unit E3 and the fourth light-emitting unit E4 are configured such that, after the third light-emitting unit E3 and the fourth light-emitting unit E4 are transferred, the pixels composed of the third light-emitting unit E3 and the fourth light-emitting unit E4 do not have an offset in the Y direction compared with the pixels composed of the first light-emitting unit E1 and the second light-emitting unit E2, thereby reducing the possibility of a decrease in the display quality of the display device.

[0051] Furthermore, since the first light-emitting unit E1 and the second light-emitting unit E2 are connected in series, the first light-emitting unit E1 and the second light-emitting unit E2 can be detected together. When a defect is detected, the third light-emitting unit E3 and the fourth light-emitting unit E4 can be transferred simultaneously for repair, which can reduce the detection time and / or repair time.

[0052] Figure 2A This is a schematic flowchart of the repair method for the display device according to the second embodiment of this disclosure, and Figure 2B Based on Figure 2A This is a schematic diagram of a cross-section taken along line A-A'. It should be noted that this flowchart is for illustrative purposes only and is not intended to limit the steps of the repair method for the display device. It should be noted that... Figure 2A The embodiments can be used Figure 1 The component references and partial contents of the embodiments are as follows, wherein the same or similar references are used to represent the same or similar components, and the description of the same technical content is omitted.

[0053] Please refer to Figure 2A This embodiment provides a repair method for a display device 10b. The main differences between the display device 10b and the display device 10a will be described below.

[0054] In this embodiment, wires CL1, CL2, and CL3 are straight lines extending in the X direction, but are not limited thereto. As mentioned earlier, wires CL1, CL2, and CL3 are conductive patterns separated from each other. From another perspective, wires CL2, CL1, and CL3 are arranged in a staggered pattern in the X direction.

[0055] In this embodiment, the first light-emitting unit E1 and the second light-emitting unit E2 are arranged in the X direction. The first electrode E11 and the second electrode E12 of the first light-emitting unit E1 have a first arrangement direction, and the third electrode E21 and the fourth electrode E22 of the second light-emitting unit E2 have a second arrangement direction, and the first arrangement direction is different from the second arrangement direction. Specifically, the first arrangement direction is the Y direction, and the second arrangement direction is the opposite direction to the Y direction.

[0056] In this embodiment, after the third light-emitting unit E3 and the fourth light-emitting unit E4 are respectively attached to the first set of spare pads RP1 and the second set of spare pads RP2, the third light-emitting unit E3 and the fourth light-emitting unit E4 have a pitch p3 in the X direction. In this embodiment, the pitch p3 is smaller than the pitch p1.

[0057] In detail, the first set of spare pads RP1 and the second set of spare pads RP2 are disposed between the first set of spare pads MP1 and the second set of spare pads MP2. Therefore, after the third light-emitting unit E3 and the fourth light-emitting unit E4 are respectively attached to the first set of spare pads RP1 and the second set of spare pads RP2, the pitch p3 will be smaller than the pitch p1.

[0058] In this embodiment, all light-emitting units before pixel repair have a maximum distance d1 in direction Y and a maximum distance d2 in direction X. For example, the first light-emitting unit E1 and the second light-emitting unit E2 belong to the same pixel, where the maximum distance d1 and the maximum distance d2 can be the distance between the two farthest edges of the first light-emitting unit E1 and the second light-emitting unit E2 in direction Y and the distance between the other two farthest edges in direction X, respectively. In this embodiment, the first light-emitting unit E1 and the second light-emitting unit E2 have a first center position O1 (or, the pixel center position O1 before repair), and the first set of spare pads RP1 and the second set of spare pads RP2 have a second center position O2, where the first center position O1 and the second center position O2 substantially overlap. Therefore, after transferring the third light-emitting unit E3 and the fourth light-emitting unit E4 to the first set of spare pads RP1 and the second set of spare pads RP2, the pixel composed of the third light-emitting unit E3 and the fourth light-emitting unit E4 does not have an offset in direction X and direction Y compared to the pixel composed of the first light-emitting unit E1 and the second light-emitting unit E2. In this embodiment, since the distance between the first center position O1 and the second center position in the Y direction is less than or equal to the farthest distance d1, and the distance between the first center position O1 and the second center position O2 in the X direction is less than or equal to the farthest distance d2, the possibility of a decrease in the display quality of the display device can be reduced.

[0059] In this embodiment, after the third light-emitting unit E3 and the fourth light-emitting unit E4 are respectively bonded to the first set of spare pads RP1 and the second set of spare pads RP2, the wires electrically connected to the first light-emitting unit E1 (e.g., a portion of the first wire CL1) and the wires electrically connected to the second light-emitting unit E2 (e.g., another portion of the first wire CL1) can be cut using a laser cutting process to reduce the impact on the third light-emitting unit E3 and / or the fourth light-emitting unit E4. It is worth noting that the positions of the pads MP and spare pads RP in all embodiments disclosed herein can be interchanged. For example, the positions of the first set of spare pads RP1 and the first set of pads MP1, and / or the second set of spare pads RP2 and the second set of pads MP2, can be interchanged. Since the configuration of the pads and spare pads changes according to requirements, the wires cut by the laser cutting process after repair can therefore differ.

[0060] Please refer to Figure 2B In this embodiment, the display device 10b may include a substrate SB, a component layer AL, and an insulating layer IL. It is worth noting that... Figure 2B The cross-sectional schematic diagram shown can also be applied to the display device 10a of the above embodiment and the display devices 10c-10g, 20a-20b described in the following embodiments.

[0061] The substrate SB may be made of, for example, glass, plastic, quartz, sapphire, silicon (Si), germanium (Ge), silicon carbide (SiC), gallium nitride (GaN), silicon germanium (SiGe), polymethyl methacrylate (PMMA), polycarbonate (PC), polyimide (PI), polyethylene terephthalate (PET), or other suitable materials, or combinations thereof, but is not limited thereto.

[0062] The component layer AL is disposed, for example, on the substrate SB. In some embodiments, the component layer AL may include multiple signal lines (not shown), multiple transistors (not shown), and / or multiple electrodes (not shown), but is not limited thereto. The multiple signal lines mentioned above may include, for example, multiple data lines (not shown), multiple scan lines (not shown), and / or other signal lines suitable for the display device 10b (e.g., common voltage lines, power supply lines, light emission control signal lines, operating signal lines, etc.). In some embodiments, the material of the component layer AL may include, for example, conductive materials, semiconductor materials, organic materials, inorganic materials, or combinations thereof. Conductive materials may include transparent conductive materials, metals, or combinations thereof. Metals may include, for example, Cu, Mo, Al, Ti, and other metals or alloys thereof suitable for the display device 10b, and transparent conductive materials may include, for example, ITO, IZO, or combinations thereof. Semiconductor materials may include, for example, amorphous silicon (a-Si), low-temperature polycrystalline silicon (LTPS), oxide semiconductors, or other suitable semiconductor materials. Organic materials may include, for example, polyimide (PI), photosensitive polyimide (PSPI), epoxy resin, polymer, or other suitable materials. Inorganic materials may include, for example, silicon oxide (SiO₂). x Silicon nitride (SiN) x ), silicon oxynitride, other suitable insulating materials, or combinations thereof.

[0063] An insulating layer IL is disposed on the component layer AL, for example, and exposes at least a portion of the conductors CL1, CL2, and CL3, so that a first set of pads MP1, a second set of pads MP2, a first set of spare pads RP1, and a second set of spare pads RP2 disposed on the insulating layer IL can be electrically connected to the corresponding conductors CL. In some embodiments, the material of the insulating layer IL may be silicon oxide, silicon nitride, silicon oxynitride, or a combination thereof, but is not limited thereto.

[0064] Figure 3 This is a schematic flowchart illustrating a repair method for a display device according to a third embodiment of this disclosure. It should be noted that this flowchart is merely an example and is not intended to limit the steps of the repair method for the display device. Figure 3 The embodiments can be used Figure 2A The component references and partial contents of the embodiments are as follows, wherein the same or similar references are used to represent the same or similar components, and the description of the same technical content is omitted.

[0065] Please refer to Figure 3 This embodiment provides a repair method for a display device 10c. The main differences between display device 10c and display device 10b will be described below.

[0066] In this embodiment, the first light-emitting unit E1 is detected and identified as defective, while the second light-emitting unit E2 is detected and identified as capable of emitting light normally. Based on this, this embodiment bonds the third light-emitting unit E3 to the first set of spare pads RP1, but retains the second light-emitting unit E2. That is, this embodiment does not bond the fourth light-emitting unit E4 to the second set of spare pads RP2. In some embodiments, a portion of the wire electrically connected to the first light-emitting unit E1 (e.g., a portion of the first wire CL1) can be cut using a laser cutting process to reduce the impact on the third light-emitting unit E3.

[0067] In this embodiment, after the third light-emitting unit E3 is bonded to the first set of spare pads RP1, the third light-emitting unit E3 and the second light-emitting unit E2 have a pitch p4 in the Y direction. In this embodiment, the pitch p4 is smaller than the pitch p1.

[0068] Based on the above, when a defect is detected in the first light-emitting unit E1, a third light-emitting unit E3 is provided by performing the repair method of this embodiment. The repaired pixel center position O3 (i.e., the center position between the third light-emitting unit E3 and the second light-emitting unit E2) does not have an offset in the Y direction compared to the pixel center position O1 before repair (i.e., the center position O1 of the first light-emitting unit E1 and the second light-emitting unit E2), thus reducing the possibility of a decrease in the display quality of the display device.

[0069] In addition, since the second light-emitting unit E2, which can emit light normally, is retained (i.e., the fourth light-emitting unit E4 is not transferred), the manufacturing cost of the display device can be reduced.

[0070] Figure 4 This is a schematic flowchart illustrating a repair method for a display device according to the fourth embodiment of this disclosure. It should be noted that this flowchart is merely an example and is not intended to limit the steps of the repair method for the display device. Figure 4 The embodiments can be used Figure 2A The component references and partial contents of the embodiments are as follows, wherein the same or similar references are used to represent the same or similar components, and the description of the same technical content is omitted.

[0071] Please refer to Figure 4 This embodiment provides a repair method for a display device 10d. The main differences between display device 10d and display device 10b will be described below.

[0072] In this embodiment, the conductor CL in the display device 10d also includes conductor CL4. Conductor CL4 is also a straight line extending in the X direction, but is not limited thereto. Conductor CL4, conductor CL3, and conductor CL1 are conductive patterns separated from each other. From another perspective, conductors CL2, CL1, CL3, and CL4 are arranged in a staggered manner in the X direction.

[0073] In this embodiment, the display device 10d further includes a fifth light-emitting unit E5. The fifth light-emitting unit E5 is disposed on and electrically connected to the third set of contact pads MP3. Specifically, the fifth light-emitting unit E5 has a fifth electrode E51 and a sixth electrode E52, wherein the fifth electrode E51 is, for example, a p-polarity (anode), and the sixth electrode E52 is, for example, an n-polarity (cathode), but is not limited thereto. Based on this, the fifth electrode E51 of the fifth light-emitting unit E5 and the fourth electrode E22 of the second light-emitting unit E2 have different polarities, such that the fifth light-emitting unit E5, the second light-emitting unit E2, and the first light-emitting unit E1 are connected in series. In this embodiment, the third set of contact pads MP3 includes, for example, contact pads MP31 and MP32 that are separated from each other. In some embodiments, contact pads MP31 and MP32 are arranged along the Y direction, but are not limited thereto.

[0074] In this embodiment, the fifth electrode E51 and the sixth electrode E52 of the fifth light-emitting unit E5 have a third arrangement direction, and the third electrode E21 and the fourth electrode E22 of the second light-emitting unit E2 have a second arrangement direction, and the third arrangement direction is different from the second arrangement direction. Specifically, the third arrangement direction is direction Y, and the second arrangement direction is the opposite direction of direction Y.

[0075] Please continue to refer to Figure 4 A carrier plate 100 is provided, wherein the carrier plate 100 may also include a sixth light-emitting unit E6 to be transferred to a third set of spare pads RP3.

[0076] Please continue to refer to Figure 4 The sixth light-emitting unit E6 is bonded to the third set of spare pads RP3. In some embodiments, the sixth light-emitting unit E6 can be disposed on the third set of spare pads RP3 by mass transfer, so that it is electrically connected to the third set of spare pads RP3. Specifically, the first electrode E61 of the sixth light-emitting unit E6 is electrically connected to the spare pad RP31 in the third set of spare pads RP3, and the second electrode E62 of the sixth light-emitting unit E6 is electrically connected to the spare pad RP32 in the third set of spare pads RP3.

[0077] Please continue to refer to Figure 4 After the third light-emitting unit E3, the fourth light-emitting unit E4, and the sixth light-emitting unit E6 are respectively bonded to the first set of spare pads RP1, the second set of spare pads RP2, and the third set of spare pads RP3, the wires electrically connected to the first light-emitting unit E1 (e.g., a portion of the first wire CL1), the wires electrically connected to the second light-emitting unit E2 (e.g., another portion of the first wire CL1), and the wires electrically connected to the fifth light-emitting unit E5 (e.g., a portion of the third wire CL3) can be cut off by laser cutting process to reduce the impact on the third light-emitting unit E3, the fourth light-emitting unit E4, and / or the sixth light-emitting unit E6.

[0078] In this embodiment, the first light-emitting unit E1, the second light-emitting unit E2, and the fifth light-emitting unit E5 belong to the same pixel. The farthest distance d1 and the farthest distance d2 can be the distance between the two farthest edges of the first light-emitting unit E1, the second light-emitting unit E2, and the fifth light-emitting unit E5 in the Y direction, and the distance between the two farthest other edges in the X direction, respectively. For example, referring to... Figure 4The first center position O1 (or the pixel center position O1 before repair) can be the center position of the first light-emitting unit E1 and the fifth light-emitting unit E5, and the second center position O2 can be the center position of the first set of spare pads RP1 and the third set of spare pads RP3. In this embodiment, the first center position O1 and the second center position O2 substantially overlap. Therefore, after transferring the third light-emitting unit E3, the fourth light-emitting unit E4, and the sixth light-emitting unit E6 to the first set of spare pads RP1, the second set of spare pads RP2, and the third set of spare pads RP3, the pixel composed of the third light-emitting unit E3, the fourth light-emitting unit E4, and the sixth light-emitting unit E6 does not have any offset in the X and Y directions compared to the pixel composed of the first light-emitting unit E1, the second light-emitting unit E2, and the fifth light-emitting unit E5. In this embodiment, the distance between the first center position O1 and the second center position in the Y direction is less than or equal to the farthest distance d1, and the distance between the first center position O1 and the second center position O2 in the X direction is less than or equal to the farthest distance d2, thus reducing the possibility of a decrease in the display quality of the display device.

[0079] Furthermore, when a defect is detected, the third light-emitting unit E3, the fourth light-emitting unit E4, and the sixth light-emitting unit E6 can be transferred simultaneously for repair, which can reduce detection time and / or repair time.

[0080] In addition, by using the configuration of the first set of pads MP1 to the third set of pads MP3 and the first set of spare pads RP1 to the third set of spare pads RP3 in this embodiment, the display device 10d can save relatively more layout space.

[0081] Figure 5 This is a schematic flowchart illustrating a repair method for a display device according to the fifth embodiment of this disclosure. It should be noted that this flowchart is merely an example and is not intended to limit the steps of the repair method for the display device. Figure 5 The embodiments can be used Figure 2A The component references and partial contents of the embodiments are as follows, wherein the same or similar references are used to represent the same or similar components, and the description of the same technical content is omitted.

[0082] Please refer to Figure 5 This embodiment provides a repair method for a display device 10e. The main differences between display device 10e and display device 10b will be described below.

[0083] In this embodiment, conductor CL1 is a bent line extending in the X direction. Specifically, conductor CL1 may consist of two straight lines extending in the X direction and one straight line extending in the Y direction, wherein the ends of the straight line extending in the Y direction are each connected to one end of one of the two straight lines extending in the X direction. Conductors CL2 and CL3 are straight lines extending in the X direction, and while conductors CL2 and CL3 are separated by conductor CL1, this is not a limitation.

[0084] In this embodiment, the first electrode E11 and the second electrode E12 of the first light-emitting unit E1 have a first arrangement direction, and the third electrode E21 and the fourth electrode E22 of the second light-emitting unit E2 have a second arrangement direction, and the first arrangement direction and the second arrangement direction are the same. Specifically, both the first arrangement direction and the second arrangement direction are in the Y direction.

[0085] In this embodiment, since the arrangement direction of the first electrode E31 and the second electrode E32 of the third light-emitting unit E3 is the same as that of the third electrode E41 and the fourth electrode E42 of the fourth light-emitting unit E4, the third light-emitting unit E3 and the fourth light-emitting unit E4 can be transferred to the first set of spare pads RP1 and the second set of spare pads RP2 simultaneously by performing a transfer process, which can reduce repair time and / or process cost.

[0086] Figure 6 This is a schematic flowchart illustrating a repair method for a display device according to the sixth embodiment of this disclosure. It should be noted that this flowchart is merely an example and is not intended to limit the steps of the repair method for the display device. Figure 6 The embodiments can be used Figure 5 The component references and partial contents of the embodiments are as follows, wherein the same or similar references are used to represent the same or similar components, and the description of the same technical content is omitted.

[0087] Please refer to Figure 6 This embodiment provides a repair method for a display device 10f. The main differences between display device 10f and display device 10e will be described below.

[0088] In this embodiment, the positions of the second set of spare pads RP2 and the second set of spare pads MP2 are interchanged. In other words, the first set of spare pads RP1 and the second set of spare pads MP2 are, for example, disposed between the first set of spare pads MP1 and the second set of spare pads RP2. After the third light-emitting unit E3 and the fourth light-emitting unit E4 are respectively attached to the first set of spare pads RP1 and the second set of spare pads RP2, the pitch p3 and the pitch p1 satisfy the following relationship: p1*0.9≤p3≤p1*1.1. For example, the pitch p3 is equal to the pitch p1. In other words, the size of the pixel composed of the third light-emitting unit E3 and the fourth light-emitting unit E4 can be the same as the size of the pixel composed of the first light-emitting unit E1 and the second light-emitting unit E2.

[0089] In this embodiment, after the third light-emitting unit E3 and the fourth light-emitting unit E4 are respectively bonded to the first set of spare pads RP1 and the second set of spare pads RP2, a portion of the wires electrically connected to the first light-emitting unit E1 (e.g., a portion of the first wire CL1) and a portion of the wires electrically connected to the second light-emitting unit E2 (e.g., a portion of the third wire CL3) can be cut off by laser cutting process to reduce the impact on the third light-emitting unit E3 and / or the fourth light-emitting unit E4.

[0090] In this embodiment, the distance between the first center position O1 and the second center position in the Y direction is less than or equal to the farthest distance d1, and the distance between the first center position O1 and the second center position O2 in the X direction is less than or equal to the farthest distance d2.

[0091] Based on the above, when at least one of the first light-emitting unit E1 and the second light-emitting unit E2 is detected to be defective, the third light-emitting unit E3 and the fourth light-emitting unit E4 are provided by performing the repair method of this embodiment. The pixel composed of the third light-emitting unit E3 and the fourth light-emitting unit E4 does not have an offset in the Y direction compared with the pixel composed of the first light-emitting unit E1 and the second light-emitting unit E2, which can reduce the possibility of the display quality of the display device deteriorating.

[0092] Furthermore, since the size of the pixel composed of the third light-emitting unit E3 and the fourth light-emitting unit E4 is the same as the size of the pixel composed of the first light-emitting unit E1 and the second light-emitting unit E2, the complexity of the process can be reduced.

[0093] Figure 7 This is a schematic flowchart illustrating a repair method for a display device according to the seventh embodiment of this disclosure. It should be noted that this flowchart is merely an example and is not intended to limit the steps of the repair method for the display device. Figure 7 The embodiments can be used Figure 1The component references and partial contents of the embodiments are as follows, wherein the same or similar references are used to represent the same or similar components, and the description of the same technical content is omitted.

[0094] Please refer to Figure 7 This embodiment provides a repair method for a display device 10g. The main differences between the display device 10g and the display device 10a will be described below.

[0095] In this embodiment, the conductor CL1 has an inverted "U" shape when viewed from above, the conductors CL2 and CL3 are straight lines extending in the X direction, and the conductor CL1 is positioned between the conductors CL2 and CL3 in the Y direction, but this is not a limitation.

[0096] In this embodiment, the first set of contact pads MP1 and the first set of spare contact pads RP1 are arranged in the X direction, the second set of spare contact pads RP2 and the second set of contact pads MP2 are arranged in the X direction, and the first set of contact pads MP1 and the second set of spare contact pads RP2 are arranged in the Y direction. Based on this, after the third light-emitting unit E3 and the fourth light-emitting unit E4 are each transferred to the first set of spare contact pads RP1 and the second set of spare contact pads RP2, the size of the pixel formed by the third light-emitting unit E3 and the fourth light-emitting unit E4 can be the same as the size of the pixel formed by the first light-emitting unit E1 and the second light-emitting unit E2.

[0097] In this embodiment, after the third light-emitting unit E3 and the fourth light-emitting unit E4 are respectively bonded to the first set of spare pads RP1 and the second set of spare pads RP2, the first wire CL1, which is electrically connected to the first light-emitting unit E1, and the third wire CL3, which is electrically connected to the second light-emitting unit E2, can be cut off by laser cutting process to reduce the impact on the third light-emitting unit E3 and / or the fourth light-emitting unit E4.

[0098] Based on the above, when at least one of the first light-emitting unit E1 and the second light-emitting unit E2 is detected to be defective, the third light-emitting unit E3 and the fourth light-emitting unit E4 are provided by performing the repair method of this embodiment. The pixel composed of the third light-emitting unit E3 and the fourth light-emitting unit E4 is not offset in both the X and Y directions compared with the pixel composed of the first light-emitting unit E1 and the second light-emitting unit E2, which can reduce the possibility of the display quality of the display device deteriorating.

[0099] In addition, since the first electrode E31 and the second electrode E32 of the third light-emitting unit E3 have the same arrangement direction as the third electrode E41 and the fourth electrode E42 of the fourth light-emitting unit E4, the third light-emitting unit E3 and the fourth light-emitting unit E4 can be transferred to the first set of spare pads RP1 and the second set of spare pads RP2 simultaneously by performing a transfer process, which can reduce repair time and / or process cost.

[0100] Furthermore, since the size of the pixel composed of the third light-emitting unit E3 and the fourth light-emitting unit E4 is the same as the size of the pixel composed of the first light-emitting unit E1 and the second light-emitting unit E2, the complexity of the process can be reduced.

[0101] In addition, the first set of pads MP1, the first set of spare pads RP1, the second set of spare pads RP2 and the second set of pads MP2 are arranged in an array to form a rectangular shape, which can improve the utilization rate of multiple light-emitting elements disposed on the carrier plate 100.

[0102] Figure 8 This is a schematic flowchart illustrating a repair method for a display device according to the eighth embodiment of this disclosure. It should be noted that this flowchart is merely an example and is not intended to limit the steps of the repair method for the display device. Figure 8 The embodiments can be used Figure 1 The component references and partial contents of the embodiments are as follows, wherein the same or similar references are used to represent the same or similar components, and the description of the same technical content is omitted.

[0103] Please refer to Figure 8 This embodiment provides a repair method for a display device 20a. The main differences between the display device 20a and the display device 10a will be described below.

[0104] The light-emitting unit E in the display device includes a first group of light-emitting units Ea, a second group of light-emitting units Eb, and a third group of light-emitting units Ec. The wavelength of light emitted by the first group of light-emitting units Ea is greater than the wavelength of light emitted by the second group of light-emitting units Eb, and the wavelength of light emitted by the second group of light-emitting units Eb is greater than the wavelength of light emitted by the third group of light-emitting units Ec. In this embodiment, the first group of light-emitting units Ea is a red light-emitting unit, the second group of light-emitting units Eb is a green light-emitting unit, and the third group of light-emitting units Ec is a blue light-emitting unit, but this is not a limitation. In some embodiments, light-emitting units of the same group are driven by the same driving circuit and driving element, and light-emitting units of different groups are driven by different driving circuits and driving elements.

[0105] The first group of light-emitting units Ea, the second group of light-emitting units Eb, and the third group of light-emitting units Ec are each disposed on the first group of contact pads MPa, MPb, and MPc, respectively, and are electrically connected to the first group of contact pads MPa, MPb, and MPc. Specifically, in this embodiment, the first group of light-emitting units Ea includes light-emitting units Ea1 and Ea2, the second group of light-emitting units Eb includes light-emitting units Eb1 and Eb2, and the third group of light-emitting units Ec includes light-emitting units Ec1 and Ec2. Light-emitting units Ea1 and Ea2 respectively have electrodes Ea11, Ea12, Ea21, and Ea22; light-emitting units Eb1 and Eb2 respectively have electrodes Eb11, Eb12, Eb21, and Eb22; and light-emitting units Ec1 and Ec2 respectively have electrodes Ec11, Ec12, Ec21, and Ec22.

[0106] In this embodiment, the first set of pads MPa includes pads MPa1 and MPa2, the second set of pads MPb includes pads MPb1 and MPb2, and the third set of pads MPc includes pads MPc1 and MPc2. Pads MPa1 and MPa2 respectively include pads MPa11, MPa12 and MPa21, MPa22 that are separate from each other. Pads MPb1 and MPb2 respectively include pads MPb11, MPb12 and MPb21, MPb22 that are separate from each other. Pads MPc1 and MPc2 respectively include pads MPc11, MPc12 and MPc21, MPc22 that are separate from each other. Electrodes Ea11 and Ea12 of light-emitting unit Ea1 are electrically connected to pads MPa11 and MPa12, respectively, and electrodes Ea21 and Ea22 of light-emitting unit Ea2 are electrically connected to pads MPa21 and MPa22. Electrodes Eb11 and Ea12 of light-emitting unit Eb1 are electrically connected to pads MPb11 and MPb12, and electrodes Eb21 and Eb22 of light-emitting unit Eb2 are electrically connected to pads MPb21 and MPb22. Electrodes Ec11 and Ec12 of light-emitting unit Ec1 are electrically connected to pads MPc11 and MPc12, and electrodes Ec21 and Ec22 of light-emitting unit Ec2 are electrically connected to pads MPc21 and MPc22.

[0107] In this embodiment, the first set of spare pads RPa includes spare pads RPa1 and RPa2, the second set of spare pads RPb includes spare pads RPb1 and RPb2, and the third set of spare pads RPc includes spare pads RPc1 and RPc2. Spare pads RPa1 and RPa2 respectively include spare pads RPa11, RPa12 and spare pads RPa21 and RPa22, which are separate from each other. Spare pads RPb1 and RPb2 respectively include spare pads RPb11, RPb12 and spare pads RPb21 and RPb22, which are separate from each other. Similarly, spare pads RPc1 and RPc2 respectively include spare pads RPc11, RPc12 and spare pads RPc21 and RPc22, which are separate from each other.

[0108] In this embodiment, the conductors CL in the display device 20a include conductors CLa, CLb, CLc, and CLd. In this embodiment, electrodes Ea11, Ea21, Eb11, Eb21, Ec11, and Ec21 are P-type electrodes, and electrodes Ea12, Ea22, Eb12, Eb22, Ec12, and Ec22 are N-type electrodes.

[0109] The conductor CLa includes, for example, conductor CLa1 and conductor CLa2. Conductor CLa1 is electrically connected to pad MPa12 and spare pad RPa12, and conductor CLa2 is electrically connected to pad MPa11, spare pad RPa11, pad MPa22 and spare pad RPa22.

[0110] The conductor CLb includes, for example, conductor CLb1 and conductor CLb2. Conductor CLb1 is electrically connected to pad MPb12 and spare pad RPb12, and conductor CLb2 is electrically connected to pad MPb11, spare pad RPb11, pad MPb22 and spare pad RPb22.

[0111] The conductor CLc includes, for example, conductor CLc1 and conductor CLc2. Conductor CLc1 is electrically connected to pad MPc12 and spare pad RPc12, and conductor CLc2 is electrically connected to pad MPc11, spare pad RPc11, pad MPc22 and spare pad RPc22.

[0112] The conductor CLd is electrically connected, for example, to pad MPa21, spare pad RPa21, pad MPb21, spare pad RPb21, pad MPc21, and spare pad RPc21.

[0113] With the above-mentioned configuration of wires CLa, CLb and CLc, the light-emitting unit Ea1 and the light-emitting unit Ea2 are connected in series, the light-emitting unit Eb1 and the light-emitting unit Eb2 are connected in series, and the light-emitting unit Ec1 and the light-emitting unit Ec2 are connected in series.

[0114] Furthermore, through the electrical connection relationship between the aforementioned pads and the spare pads and the corresponding conductors CL, this embodiment can design the conductor CLd as a common anode line to reduce the layout area of ​​the display device 20a. However, in other embodiments, electrodes Ea11, Ea21, Eb11, Eb21, Ec11, and Ec21 can be designed as N poles, and electrodes Ea12, Ea22, Eb12, Eb22, Ec12, and Ec22 can be designed as P poles, so that the conductor CLd can be designed as a common cathode line, which can also reduce the layout area of ​​the display device 20a.

[0115] Please continue to refer to Figure 8 When a defect is detected in the first group of light-emitting units Ea, the second group of light-emitting units Eb, and / or the third group of light-emitting units Ec, the first group of light-emitting units Ea', the second group of light-emitting units Eb', and the third group of light-emitting units Ec' can be respectively bonded to spare pads RPa, spare pad RPb, and spare pad RPc. Specifically, the electrodes Ea11' and Ea12' of light-emitting unit Ea1' are electrically connected to spare pads RPa11 and RPa12, respectively, and the electrodes Ea21' and Ea22' of light-emitting unit Ea2' are electrically connected to spare pads RPa21 and RPa22. The electrodes Eb11' and Ea12' of light-emitting unit Eb1' are electrically connected to spare pads RPb11 and RPb12, and the electrodes Eb21' and Eb22' of light-emitting unit Eb2' are electrically connected to spare pads RPb21 and RPb22. The electrodes Ec11' and Ec12' of the light-emitting unit Ec1' are electrically connected to the spare pads RPc11 and RPc12, and the electrodes Ec21' and Ec22' of the light-emitting unit Ec2' are electrically connected to the spare pads RPc21 and RPc22.

[0116] Please continue to refer to Figure 8 After the first group of light-emitting units Ea', the second group of light-emitting units Eb', and the third group of light-emitting units Ec' are respectively connected to spare pads RPa, spare pad RPb, and spare pad RPc, the wires CLa electrically connected to a portion of the first group of light-emitting units Ea, the wires CLb electrically connected to a portion of the second group of light-emitting units Eb, and the wires CLc electrically connected to a portion of the third group of light-emitting units Ec can be cut off by laser cutting process to reduce the impact of the first group of light-emitting units Ea', the second group of light-emitting units Eb', and / or the third group of light-emitting units Ec'.

[0117] Based on the above, when a defect is detected in at least one of the first group of light-emitting units Ea, the second group of light-emitting units Eb, and the third group of light-emitting units Ec, the first group of light-emitting units Ea', the second group of light-emitting units Eb', and the third group of light-emitting units Ec' are configured using the repair method of this embodiment. Therefore, the pixel composed of the first group of light-emitting units Ea, the second group of light-emitting units Eb, and the third group of light-emitting units Ec does not have any offset in the X and Y directions compared to the pixel composed of the first group of light-emitting units Ea', the second group of light-emitting units Eb', and the third group of light-emitting units Ec'. This design reduces the possibility of a degradation in the display quality of the display device.

[0118] Furthermore, since the light-emitting units Ea1 and Ea2 (light-emitting units Eb1 and Eb2, and light-emitting units Ec1 and Ec2) are connected in series, they can be detected together. Moreover, when a defect is detected, the first group of light-emitting units Ea', the second group of light-emitting units Eb', and / or the third group of light-emitting units Ec' can be transferred simultaneously for repair, which can reduce detection time and / or repair time.

[0119] Furthermore, taking the light-emitting unit Ea as an example, through the electrical connection relationship between the aforementioned pads and spare pads and their respective conductors CL, multiple light-emitting units Ea' can be simultaneously transferred to the corresponding spare pads in a single transfer process when a defect is detected, thereby reducing repair time and / or process costs. For example, the electrodes Ea11' and Ea12' of light-emitting unit Ea1' have the same arrangement direction as the electrodes Ea21' and Ea22' of light-emitting unit Ea2'. Therefore, light-emitting units Ea1' and Ea2' can be simultaneously transferred to spare pads RPa1 and RPa2 in a single transfer process. In some embodiments, light-emitting units Eb and Ec can be transferred together with light-emitting unit Ea in a single transfer process, but this is not a limitation.

[0120] Furthermore, through the configuration of the above-mentioned conductors CLa, CLa, CLa, CLa, and CLa, the light emitted by the light-emitting units Ea, Eb, and Ec in a single pixel can have a more uniformly mixed color.

[0121] Figure 9A This is a schematic flowchart of the repair method for the display device according to the ninth embodiment of this disclosure, and Figure 9BThis diagram illustrates the shape of a light-emitting unit according to an embodiment of the present disclosure. It should be noted that this flowchart is merely an example and is not intended to limit the steps of the repair method for the display device. It should also be noted that... Figure 9A as well as Figure 9B The embodiments can be used Figure 8 The component references and partial contents of the embodiments are as follows, wherein the same or similar references are used to represent the same or similar components, and the description of the same technical content is omitted.

[0122] Please refer to Figure 9A as well as Figure 9B This embodiment provides a repair method for a display device 20b. The main differences between display device 20b and display device 20a will be described below.

[0123] In this embodiment, the light-emitting units Ea, Eb, and Ec in the display device 20b have concentric circle shapes, wherein the outer circle portion and the inner circle portion each have different polarities. For example, the outer circle portion of the light-emitting units Ea, Eb, and Ec is the N pole, and the inner circle portion of the light-emitting units Ea, Eb, and Ec is the P pole, but this is not a limitation.

[0124] In this embodiment, taking the first set of pads MPa as an example, the pads MPa1 and MPa2 in the first set of pads MPa include pads MPa11 and MPa12 (e.g., including three pads MPa121, MPa122, and MPa123) and pads MPa21 and MPa22 (e.g., including three pads MPa221, MPa222, and MPa223) that are separated from each other.

[0125] In this embodiment, taking the first set of spare pads RPa as an example, the spare pads RPa1 and RPa2 in the first set of spare pads RPa include spare pads RPa11 and RPa12 (e.g., three spare pads RPa121, RPa122, and RPa123) and spare pads RPa21 and RPa22 (e.g., three spare pads RPa221, RPa222, and RPa223) that are separated from each other.

[0126] In this embodiment, electrodes Ea11, Ea21, Eb11, Eb21, Ec11, and Ec21 are P-type electrodes, and electrodes Ea12, Ea22, Eb12, Eb22, Ec12, and Ec22 are N-type electrodes.

[0127] In this embodiment, taking wires CLa1 and CLa2 as examples, wire CLa1 is electrically connected to pad MPa11 and spare pad RPa11, and wire CLa2 is electrically connected to pad MPa12, spare pad RPa12, pad MPa21 and spare pad RPa21.

[0128] Furthermore, through the electrical connection relationship between the aforementioned pads and the spare pads and the corresponding conductors CL, this embodiment can design the conductor CLd as a common cathode line to reduce the layout area of ​​the display device 20b. However, in other embodiments, electrodes Ea11, Ea21, Eb11, Eb21, Ec11, and Ec21 can be designed as P-type electrodes, and electrodes Ea12, Ea22, Eb12, Eb22, Ec12, and Ec22 can be designed as N-type electrodes, so that the conductor CLd can be designed as a common anode line, which can also reduce the layout area of ​​the display device 20b.

[0129] In summary, when a defect is detected in at least one of the first and second light-emitting units, the third and fourth light-emitting units can be positioned on corresponding spare pads using the repair method of the display device provided in some embodiments of this disclosure. After transferring the third and fourth light-emitting units, the pixels composed of the third and fourth light-emitting units are not offset in at least one direction compared to the pixels composed of the first and second light-emitting units. This design reduces the possibility of a degradation in the display quality of the display device.

[0130] Furthermore, in some embodiments disclosed herein, the first light-emitting unit and the second light-emitting unit are connected in series. Therefore, the first light-emitting unit and the second light-emitting unit can be detected together, and if at least one of them is found to be defective, the third light-emitting unit and the fourth light-emitting unit can be transferred simultaneously for repair. This can reduce the detection time and / or repair time of the display device in some embodiments of this disclosure.

[0131] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A display device, characterized in that, include: First light-emitting unit; Second light-emitting unit; The first wire is electrically connected to the first light-emitting unit and the second light-emitting unit; The first spare pad is electrically connected to the first wire; as well as The second spare pad is electrically connected to the first wire. The first light-emitting unit has a first electrode and a second electrode, the second light-emitting unit has a third electrode and a fourth electrode, the first wire is electrically connected to the second electrode and the third electrode, and the second electrode and the third electrode have different polarities.

2. The display device according to claim 1, further comprising: The second wire is electrically connected to the first electrode of the first light-emitting unit; The third wire is electrically connected to the fourth electrode of the second light-emitting unit; The third spare pad is electrically connected to the second conductor; as well as The fourth spare pad is electrically connected to the third conductor.

3. The display device according to claim 2, wherein the first spare pad and the third spare pad form a first set of spare pads, and the second spare pad and the fourth spare pad form a second set of spare pads. The first light-emitting unit and the second light-emitting unit have a first pitch, and the first set of spare contact pads and the second set of spare contact pads have a second pitch, and the first pitch and the second pitch conform to the following relationship: p1*0.9≤p2≤p1*1.1, Where p1 is the first pitch and p2 is the second pitch.

4. The display device according to claim 3, wherein the first light-emitting unit and the second light-emitting unit have a first central position, the first set of spare pads and the second set of spare pads have a second central position, and the distance between the first central position and the second central position in a first direction is less than or equal to the farthest distance between the first light-emitting unit and the second light-emitting unit in the first direction.

5. The display device according to claim 1, wherein the first electrode and the second electrode have a first arrangement direction, the third electrode and the fourth electrode have a second arrangement direction, and the first arrangement direction is the same as the second arrangement direction.

6. The display device according to claim 1, wherein the first light-emitting unit and the second light-emitting unit are used to provide light of the same color.

7. A method for repairing a display device, characterized in that, The display device includes a first light-emitting unit, a second light-emitting unit, a first set of spare pads, and a second set of spare pads. The first set of spare pads is electrically connected to the first light-emitting unit, and the second set of spare pads is electrically connected to the second light-emitting unit. The repair method includes: A carrier plate is provided, the carrier plate including a third light-emitting unit and a fourth light-emitting unit; The third light-emitting unit is attached to the first set of spare pads; and The fourth light-emitting unit is attached to the second set of spare pads. The first set of spare pads and the second set of spare pads are connected in series after being joined to the third light-emitting unit and the fourth light-emitting unit.

8. The repair method for the display device according to claim 7, wherein after the third light-emitting unit is bonded to the first set of spare pads and the fourth light-emitting unit is bonded to the second set of spare pads, a portion of the first wire is cut off using a laser cutting process.

9. The repair method for a display device according to claim 7, wherein in the steps of bonding the third light-emitting unit to the first set of spare pads and bonding the fourth light-emitting unit to the second set of spare pads, the third light-emitting unit and the fourth light-emitting unit are transferred in a transfer process.

10. The repair method for the display device according to claim 7, wherein the first light-emitting unit and the second light-emitting unit have a first pitch, the first set of spare pads and the second set of spare pads have a second pitch, and the first pitch and the second pitch conform to the following relationship: p1*0.9≤p2≤p1*1.1, Where p1 is the first pitch and p2 is the second pitch.

11. The method for repairing a display device according to claim 7, wherein before the steps of bonding the third light-emitting unit to the first set of spare pads and bonding the fourth light-emitting unit to the second set of spare pads, the first light-emitting unit and the second light-emitting unit are inspected to check whether the first light-emitting unit and / or the second light-emitting unit have defects.

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