Display device and manufacturing method thereof

Abstract

A display device comprises a driving circuit substrate, a plurality of light-emitting element groups, a flat layer and a first light shielding layer. The driving circuit substrate is provided with a plurality of pixel driving structures. Each pixel driving structure comprises a plurality of sub-pixel driving structures. Each sub-pixel driving structure comprises a sub-pixel driving circuit, at least one main connecting pad and at least one connecting pad for repairing. The flat layer is arranged on the driving circuit substrate. The first shading layer is arranged on the flat layer. The plurality of pixel driving structures include a normal pixel driving structure. The plurality of light-emitting element groups include a normal light-emitting element group. The first shading layer comprises a first entity part and a first opening. The first entity portion shields at least one repair pad of the normal pixel driving structure. The first opening is located above the first light-emitting element of the normal light-emitting element group. In addition, the manufacturing method of the display device is also provided.

Description

Technical Field

[0001] The present invention relates to an optoelectronic device and a manufacturing method thereof, and in particular to a display device and a manufacturing method thereof. Background Art

[0002] With the advancement of display technology, the development of the panel industry is no longer just about pursuing large size and high capacity utilization, but is moving towards presenting a higher level of panel image quality. The current trend of panel development is gradually shifting from backlighting to active lighting. The main reason is that active lighting panels have the advantages of being thin, flexible, with a wide color gamut, wide viewing angle, high contrast, and high resolution. They can present excellent panel image quality and are suitable for more diversified product applications. Among various active light-emitting displays, micro-light-emitting diode displays also have advantages that organic light-emitting diode displays do not have, such as local dimming, high brightness, and longer service life. Therefore, they have also become the main development technology of the panel industry in the future.

[0003] In addition to the reflective metal lines of the driving circuit layer of the micro-LED display, due to the difficulty of mass transfer technology, a repair pad is currently pre-set on the substrate. However, generally speaking, the material of the repair pad is metal, which has a high reflectivity, making it difficult to reduce the overall reflectivity of the micro-LED display panel. Summary of the invention

[0004] The invention provides a display device with low reflectivity.

[0005] The invention provides a method for manufacturing a display device, which can manufacture a display device with low reflectivity.

[0006] The display device of the present invention includes a driving circuit substrate, a plurality of light-emitting element groups, a flat layer and a first light-shielding layer. The driving circuit substrate has a plurality of pixel driving structures. Each pixel driving structure includes a plurality of sub-pixel driving structures. Each sub-pixel driving structure includes a sub-pixel driving circuit, at least one main pad and at least one repair pad, and at least one main pad and at least one repair pad are electrically connected to the sub-pixel driving circuit. A plurality of light-emitting element groups are electrically connected to a plurality of pixel driving structures, respectively. Each light-emitting element group includes a first light-emitting element. The flat layer is disposed on the driving circuit substrate and covers the plurality of light-emitting element groups. The first light-shielding layer is disposed on the flat layer. A plurality of pixel driving structures include a normal pixel driving structure. A plurality of light-emitting element groups include a normal light-emitting element group. The normal light-emitting element group is electrically connected to the normal pixel driving structure. The first light-emitting element of the normal light-emitting element group is bonded to at least one main pad of the normal pixel driving structure. The first light-shielding layer includes a first entity portion and a first opening. The first entity portion shields at least one repair pad of the normal pixel driving structure. The first opening is located above the first light-emitting element of the normal light-emitting element group.

[0007] In one embodiment of the above-mentioned display device of the present invention, the multiple sub-pixel driving structures of each of the pixel driving structures include a first sub-pixel driving structure and a second sub-pixel driving structure, and each of the light-emitting element groups further includes a second light-emitting element. The first light-emitting element of the normal light-emitting element group is connected to the at least one main pad of the first sub-pixel driving structure of the normal pixel driving structure, and the second light-emitting element of the normal light-emitting element group is connected to the at least one main pad of the second sub-pixel driving structure of the normal pixel driving structure. The first light-shielding layer further includes a second solid portion and a second opening. The second solid portion shields the at least one repair pad of the second sub-pixel driving structure of the normal pixel driving structure, and the second opening is located above the second light-emitting element of the normal light-emitting element group.

[0008] In one embodiment of the above-mentioned display device of the present invention, the multiple sub-pixel driving structures of each of the pixel driving structures further include a third sub-pixel driving structure, and each of the light-emitting element groups further includes a third light-emitting element. The third light-emitting element of the normal light-emitting element group is connected to the at least one main pad of the third sub-pixel driving structure of the normal pixel driving structure. The first light-shielding layer further includes a third solid portion and a third opening. The third solid portion shields the at least one repair pad of the third sub-pixel driving structure of the normal pixel driving structure, and the third opening is located above the third light-emitting element of the normal light-emitting element group.

[0009] In one embodiment of the above-mentioned display device of the present invention, the multiple sub-pixel driving structures of each of the pixel driving structures include a second sub-pixel driving structure, and each of the light-emitting element groups further includes a second light-emitting element. The multiple pixel driving structures include a repaired pixel driving structure, and the multiple light-emitting element groups include a repaired light-emitting element group. The repaired light-emitting element group is electrically connected to the repaired pixel driving structure, and the second light-emitting element of the repaired light-emitting element group is connected to the at least one repair pad of the second sub-pixel driving structure of the repaired pixel driving structure. The first light-shielding layer further includes a second opening and a processed opening, and the second opening is located above the at least one main pad of the second sub-pixel driving structure of the repaired pixel driving structure, and the processed opening is located above the at least one repair pad of the second sub-pixel driving structure of the repaired pixel driving structure and the second light-emitting element of the repaired light-emitting element group.

[0010] In one embodiment of the display device of the present invention, the device further comprises:

[0011] A second light shielding layer is disposed on the flat layer and the first light shielding layer, wherein the second light shielding layer includes a light shielding pattern filling the second opening of the first light shielding layer, and the light shielding pattern shields at least one main pad of the second sub-pixel driving structure of the repaired pixel driving structure.

[0012] The manufacturing method of the display device of the present invention includes the following steps: providing a driving circuit substrate having a plurality of pixel driving structures, wherein each pixel driving structure includes a plurality of sub-pixel driving structures, each sub-pixel driving structure includes a sub-pixel driving circuit, at least one main pad and at least one repair pad, and the at least one main pad and the at least one repair pad are electrically connected to the sub-pixel driving circuit; bonding a plurality of light-emitting elements to a plurality of main pads of a plurality of sub-pixel driving structures of a plurality of pixel driving structures; forming a flat layer on the driving circuit substrate to cover the plurality of light-emitting elements; forming a first shading layer on the flat layer, wherein the first shading layer has a plurality of openings, the plurality of openings are located above at least a portion of the plurality of light-emitting elements, and a plurality of solid portions of the first shading layer shield at least a portion of a plurality of repair pads of the plurality of pixel driving structures.

[0013] In one embodiment of the above method of the present invention, it further comprises:

[0014] After the plurality of light-emitting elements are bonded to the plurality of main pads, a detection process is performed to detect whether the plurality of light-emitting elements can be driven by the driving circuit substrate to emit light, wherein in the detection process, it is found that a light-emitting element on the at least one main pad of a sub-pixel driving structure of the pixel driving structure cannot emit light;

[0015] After performing the inspection process and before forming the planar layer, bonding a repairing light emitting element to the at least one repairing pad of the sub-pixel driving structure; and

[0016] A processing opening is formed in the first light shielding layer, wherein the processing opening overlaps with the light emitting element for repair.

[0017] In one embodiment of the above method of the present invention, it further comprises:

[0018] A second light-shielding layer is formed on the first light-shielding layer and the planar layer, wherein the second light-shielding layer includes a light-shielding pattern, the multiple openings include an opening located on at least one main pad of the sub-pixel driving structure of the pixel driving structure, and the light-shielding pattern fills the opening of the first light-shielding layer and shields the at least one main pad of the sub-pixel driving structure of the pixel driving structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figures 1A to 1F The figure is a top view schematically showing a manufacturing process of a display device according to an embodiment of the present invention.

[0020] FIG. 2A to FIG. 2F The figure is a cross-sectional schematic diagram of a manufacturing process of a display device according to an embodiment of the present invention.

[0021] FIG. 3A to FIG. 3F The figure is a cross-sectional schematic diagram of a manufacturing process of a display device according to an embodiment of the present invention.

[0022] 4A to 4F The figure is a cross-sectional schematic diagram of a manufacturing process of a display device according to an embodiment of the present invention.

[0023] FIG. 5A to FIG. 5F The figure is a cross-sectional schematic diagram of a manufacturing process of a display device according to an embodiment of the present invention.

[0024] Figure 6 FIG. 1 is a schematic diagram of an equivalent circuit of a pixel driving structure of a display device according to an embodiment of the present invention.

[0025] Wherein, the reference numerals are:

[0026] 10: Display Device

[0027] 100: driving circuit substrate

[0028] 110: Base

[0029] 110a: District 1

[0030] 110b: District 2

[0031] 120: Line structure

[0032] 122, 122a, 122b: Main pads

[0033] 124, 124a, 124b: Repair pads

[0034] 200, 200', 200R, 200G, 200G', 200B, 200NG: Light emitting components

[0035] 300: Flat layer

[0036] 400: first light shielding layer

[0037] 400a, 400a-1, 400a-2, 400a-3, 400c: Open

[0038] 400b: Processing opening

[0039] 402, 402-1, 402-2, 402-3: Physical Department

[0040] 500: Second light shielding layer

[0041] 502: Shading pattern

[0042] C: Capacitor

[0043] DL: Data Line

[0044] G200, G200': Light-emitting element group

[0045] GL: Gate Line

[0046] PL: Power line

[0047] PX: Pixel drive structure

[0048] PX1: First pixel driving structure

[0049] PX2: Second pixel driving structure

[0050] SPC: Sub-Pixel Driver Circuit

[0051] SPX, SPX1, SPX2, SPX3: Sub-pixel drive structure

[0052] T1: The first transistor

[0053] T1a, T2a: First end

[0054] T1b, T2b: Second end

[0055] T1c, T2c: control end

[0056] T2: Second transistor

[0057] I-I', II-II', III-III', IV-IV': hatching line DETAILED DESCRIPTION

[0058] Reference will now be made in detail to exemplary embodiments of the present invention, examples of which are illustrated in the accompanying drawings. Whenever possible, the same reference numerals are used in the drawings and the description to refer to the same or like parts.

[0059] It should be understood that when an element such as a layer, film, region, or substrate is referred to as being "on" or "connected to" another element, it may be directly on or connected to another element, or an intermediate element may also exist. In contrast, when an element is referred to as being "directly on" or "directly connected to" another element, there are no intermediate elements. As used herein, "connection" may refer to physical and / or electrical connection. Furthermore, "electrical connection" or "coupling" may refer to the presence of other elements between two elements.

[0060] As used herein, "about", "approximately", or "substantially" include the stated value and the average value within an acceptable deviation range of the particular value determined by one of ordinary skill in the art, taking into account the measurement in question and the particular amount of error associated with the measurement (i.e., the limitations of the measurement system). For example, "about" can mean within one or more standard deviations of the stated value, or within ±30%, ±20%, ±10%, ±5%. Furthermore, as used herein, "about", "approximately", or "substantially" can select a more acceptable deviation range or standard deviation depending on the optical property, etching property or other property, and can apply to all properties without a single standard deviation.

[0061] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the invention belongs. It will be further understood that terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with their meaning in the context of the relevant technology and the present invention, and will not be interpreted as an idealized or overly formal meaning unless explicitly defined as such herein.

[0062] Figures 1A to 1F The figure is a top view schematically showing a manufacturing process of a display device according to an embodiment of the present invention. FIG. 2A to FIG. 2F The figure is a cross-sectional schematic diagram of a manufacturing process of a display device according to an embodiment of the present invention. FIG. 2A to FIG. 2F Corresponding to Figures 1A to 1F Section line I-I'. FIG. 3A to FIG. 3F The figure is a cross-sectional schematic diagram of a manufacturing process of a display device according to an embodiment of the present invention. FIG. 3A to FIG. 3F Corresponding to Figures 1A to 1F Section line II-II'. 4A to 4F The figure is a cross-sectional schematic diagram of a manufacturing process of a display device according to an embodiment of the present invention. 4A to 4F Corresponding to Figures 1A to 1F Section line III-III'. FIG. 5A to FIG. 5F The figure is a cross-sectional schematic diagram of a manufacturing process of a display device according to an embodiment of the present invention. FIG. 5A to FIG. 5F Corresponding to Figures 1A to 1F Section line IV-IV'.

[0063] Please refer to Figure 1A , Figure 2A , Figure 3A , Figure 4A and Figure 5AFirst, a driving circuit substrate 100 is provided. The driving circuit substrate 100 includes a substrate 110 and a circuit structure 120 disposed on the substrate 110. In some embodiments, the substrate 110 may selectively have a first area 110a and a second area 110b, the circuit structure 120 is disposed on the first area 110a of the substrate 110, the driving circuit substrate 100 is substantially opaque in the first area 110a, the circuit structure 120 is not disposed on the second area 110b of the substrate 110, and the driving circuit substrate 100 is substantially transparent in the second area 110b, but the present invention is not limited thereto.

[0064] Please refer to Figure 1A , Figure 2A , Figure 3A , Figure 4A and Figure 5A The circuit structure 120 of the driving circuit substrate 100 has a plurality of pixel driving structures PX. Each pixel driving structure PX includes a plurality of sub-pixel driving structures SPX. For example, in some embodiments, each pixel driving structure PX may selectively include three sub-pixel driving structures SPX1, SPX2, and SPX3, but the present invention is not limited thereto.

[0065] Figure 6 FIG. 1 is a schematic diagram of an equivalent circuit of a pixel driving structure of a display device according to an embodiment of the present invention. Figure 1A , Figure 2A , Figure 3A , Figure 4A , Figure 5A and Figure 6 Each pixel driving structure PX includes a plurality of sub-pixel driving structures SPX, each sub-pixel driving structure SPX includes a sub-pixel driving circuit SPC (shown in FIG. Figure 6 ), at least one main pad 122 and at least one repair pad 124, wherein the at least one main pad 122 and the at least one repair pad 124 are electrically connected to the same sub-pixel driving circuit SPC.

[0066] For example, in some embodiments, at least one main pad 122 of each sub-pixel driving structure SPX may include a plurality of main pads 122a and 122b that are structurally separated from each other, and at least one repair pad 124 of each sub-pixel driving structure SPX may include a plurality of repair pads 124a and 124b that are structurally separated from each other, wherein one main pad 122a is electrically connected to one repair pad 124a, and another main pad 122b is electrically connected to another repair pad 124b.

[0067] Please refer to Figure 1A and Figure 6In detail, in some embodiments, the circuit structure 120 further includes a plurality of data lines DL, a plurality of gate lines GL, a plurality of power lines PL and a plurality of common lines (not shown), each sub-pixel driving circuit SPC may include a first transistor T1, a second transistor T2 and a capacitor C, a first end T1a of the first transistor T1 is electrically connected to a corresponding data line DL, a control end T1c of the first transistor T1 is electrically connected to a corresponding gate line GL, a second end T1b of the first transistor T1 is electrically connected to a control end T2c of the second transistor T2, a first end T2a of the second transistor T2 is electrically connected to a corresponding power line PL, the capacitor C is electrically connected to the second end T1b of the first transistor T1 and the first end T2a of the second transistor T2, a second end T2b of the second transistor T2 is electrically connected to a main pad 122a and a repair pad 124a, another main pad 122b and another repair pad 124b are electrically connected to a corresponding common line, but the present invention is not limited thereto. In some embodiments, the control terminals T1 c of the first transistors T1 of the sub-pixel driving structures SPX of the same pixel driving structure PX may be selectively electrically connected to the same gate line GL, but the present invention is not limited thereto.

[0068] Please refer to Figure 1B , Figure 2B , Figure 3B , Figure 4B and Figure 5B , then, multiple light-emitting elements 200 are bonded to multiple main pads 122 of multiple sub-pixel driving structures SPX of multiple pixel driving structures PX. Multiple light-emitting elements 200 can be divided into multiple light-emitting element groups G200. Multiple light-emitting element groups G200 are electrically connected to multiple pixel driving structures PX respectively. In some embodiments, each light-emitting element group G200 may include a light-emitting element 200R, a light-emitting element 200G, and a light-emitting element 200B, which are electrically connected to multiple sub-pixel driving structures SPX of the same pixel driving structure PX respectively. In some embodiments, the light-emitting element 200R, the light-emitting element 200G, and the light-emitting element 200B can be used to emit red light, green light, and blue light, respectively, but the present invention is not limited thereto. In some embodiments, the light-emitting element 200 is, for example, a micro light-emitting diode (μLED), but the present invention is not limited thereto.

[0069] Please refer to Figure 1B , Figure 2B , Figure 3B , Figure 4B and Figure 5BThen, a detection process is performed to detect whether the plurality of light-emitting elements 200 can be driven by the driving circuit substrate 100 to emit light. In some embodiments, during the detection process, it is found that a light-emitting element 200NG on a main pad 122 of a sub-pixel driving structure SPX of a pixel driving structure PX cannot emit light normally. Figure 1B , Figure 1C , Figure 2B , Figure 2C , Figure 3B , Figure 3C , Figure 4B , Figure 4C , Figure 5B and Figure 5C Then, in some embodiments, the light emitting element 200NG that cannot emit light normally can be selectively removed, and the repairing light emitting element 200' can be bonded to the repairing pad 124 of the same sub-pixel driving structure SPX.

[0070] Please refer to Figure 1B , Figure 1C , Figure 2B , Figure 2C , Figure 3B , Figure 3C , Figure 4B , Figure 4C , Figure 5B and Figure 5C For example, in some embodiments, the plurality of pixel driving structures PX may include a first pixel driving structure PX1 and a second pixel driving structure PX2. During the aforementioned detection process, it is found that the plurality of light-emitting elements 200 of the first pixel driving structure PX1 can emit light normally. The first pixel driving structure PX1 can be referred to as a normal pixel driving structure, and the light-emitting element group G200 formed by the plurality of light-emitting elements 200 electrically connected to the first pixel driving structure PX1 can be referred to as a normal light-emitting element group. During the aforementioned detection process, it is found that a light-emitting element 200NG of a sub-pixel driving structure SPX of the second pixel driving structure PX2 cannot emit light normally. The light-emitting element 200NG that cannot emit light normally can be removed, and the repair light-emitting element 200' can be bonded to the repair pad 124 of the same sub-pixel driving structure SPX of the second pixel driving structure PX2. Please refer to Figure 1C , Figure 2C , Figure 3C , Figure 4C and Figure 5C The second pixel driving structure PX2 may be referred to as a repaired pixel driving structure, and the light emitting element group G200' consisting of the plurality of light emitting elements 200, 200' electrically connected to the second pixel driving structure PX2 may be referred to as a repaired light emitting element group.

[0071] In some embodiments, the light emitting element 200NG that cannot emit light normally is, for example, a second light emitting element 200G that emits green light, and the repair light emitting element 200' that replaces the light emitting element 200NG that cannot emit light normally is another second light emitting element 200G' that emits green light, but the present invention is not limited thereto.

[0072] Please refer to Figure 1D , Figure 2D , Figure 3D , Figure 4D and Figure 5D Then, a flat layer 300 is formed on the driving circuit substrate 100 to cover the plurality of light emitting elements 200, 200'. The flat layer 300 is disposed on the driving circuit substrate 100 and covers the plurality of light emitting element groups G200, G200'. In some embodiments, the material of the flat layer 300 may be an inorganic material (e.g., silicon oxide, silicon nitride, silicon oxynitride, or a stacked layer of at least two of the above materials), an organic material, or a combination thereof.

[0073] Please refer to Figure 1E , Figure 2E , Figure 3E , Figure 4E and Figure 5E Then, a first light shielding layer 400 is formed on the planar layer 300. The first light shielding layer 400 is disposed on the planar layer 300. The first light shielding layer 400 has a plurality of openings 400a, and the plurality of openings 400a of the first light shielding layer 400 overlap with a plurality of main pads 122 of a plurality of pixel driving structures PX respectively. The plurality of openings 400a of the first light shielding layer 400 are located above the plurality of light emitting elements 200, and the plurality of entity portions 402 of the first light shielding layer 400 shield the plurality of repair pads 124 of the plurality of pixel driving structures PX. Please refer to Figure 1E and Figure 5E In some embodiments, the second pixel driving structure PX2 is repaired, and the light emitting element 200 ′ for repair is temporarily shielded by the solid portion 402 of the first light shielding layer 400 .

[0074] In some embodiments, the display device 10 (indicated at Figure 1F , Figure 2F , Figure 3F , Figure 4F and Fig. 5F ) may selectively be a transparent display device, and the first light-shielding layer 400 may selectively further have a plurality of openings 400c, wherein the area of ​​each opening 400c is larger than the area of ​​an opening 400a, and the plurality of light-emitting elements 200 of each pixel driving structure PX are surrounded by the corresponding plurality of openings 400c, and the user's line of sight can view the scene behind the display device 10 through the plurality of openings 400c.

[0075] Please refer to Figure 1F and Fig. 5F In some embodiments, a processing opening 400b is then formed in the first light shielding layer 400, wherein the processing opening 400b overlaps with the repair light emitting element 200'. For example, in some embodiments, a laser etching process can be used to form the processing opening 400b in the first light shielding layer 400, but the present invention is not limited thereto.

[0076] Please refer to Figure 1F and Figure 4F In some embodiments, a second light shielding layer 500 is then formed on the first light shielding layer 400 and the planar layer 300. In some embodiments, the second light shielding layer 500 can be selectively formed by inkjet printing, but the present invention is not limited thereto. Thus, the display device 10 is completed. The second light shielding layer 500 includes a light shielding pattern 502. The plurality of openings 400a of the first light shielding layer 400 include an opening 400a located on the main pad 122 of the sub-pixel driving structure SPX2 of the second pixel driving structure PX2. The light shielding pattern 502 of the second light shielding layer 500 fills the opening 400a of the first light shielding layer 400 and shields the main pad 122 of the sub-pixel driving structure SPX2 of the second pixel driving structure PX2. In this way, the display device 10 can not only use the first light shielding layer 400 to shield the unused repair pad 124, but also shield the discarded main pad 122 through the second light shielding layer 500, so that the reflectivity can be greatly reduced.

[0077] Please refer to Figure 1F , Figure 2F , Figure 3F , Figure 4F and Fig. 5F , the multiple pixel driving structures PX of the display device 10 include a normal pixel driving structure (i.e., a first pixel driving structure PX1). The multiple light-emitting element groups G200 of the display device 10 include a normal light-emitting element group (i.e., a light-emitting element group G200 electrically connected to the first pixel driving structure PX1). The light-emitting element 200R of the normal light-emitting element group (i.e., a light-emitting element group G200 electrically connected to the first pixel driving structure PX1) is connected to the main pad 122 of the sub-pixel driving structure SPX1 of the normal pixel driving structure (i.e., the first pixel driving structure PX1). The light-emitting element 200G of the normal light-emitting element group (i.e., a light-emitting element group G200 electrically connected to the first pixel driving structure PX1) is connected to the main pad 122 of the sub-pixel driving structure SPX2 of the normal pixel driving structure (i.e., the first pixel driving structure PX1). The light emitting element 200G of the normal light emitting element group (ie, a light emitting element group G200 electrically connected to the first pixel driving structure PX1 ) is connected to the main pad 122 of the sub-pixel driving structure SPX3 of the normal pixel driving structure (ie, the first pixel driving structure PX1 ).

[0078] Please refer to Figure 1F and Figure 3F The multiple entity parts 402 of the first light shielding layer 400 include the entity part 402-1 of the repair pad 124 of the sub-pixel driving structure SPX1 that shields the normal pixel driving structure (i.e., the first pixel driving structure PX1), the entity part 402-2 of the repair pad 124 of the sub-pixel driving structure SPX2 that shields the normal pixel driving structure (i.e., the first pixel driving structure PX1), and the entity part 402-3 of the repair pad 124 of the sub-pixel driving structure SPX3 that shields the normal pixel driving structure (i.e., the first pixel driving structure PX1).

[0079] Please refer to Figure 1F and Figure 3F , the multiple openings 400a of the first light shielding layer 400 include an opening 400a-1 located above the light emitting element 200R of the normal light emitting element group (i.e., a light emitting element group G200 electrically connected to the first pixel driving structure PX1). The multiple openings 400a-1 of the first light shielding layer 400 include an opening 400a-2 located above the light emitting element 200G of the normal light emitting element group (i.e., a light emitting element group G200 electrically connected to the first pixel driving structure PX1). The multiple openings 400a of the first light shielding layer 400 include an opening 400a-3 located above the light emitting element 200B of the normal light emitting element group (i.e., a light emitting element group G200 electrically connected to the first pixel driving structure PX1).

[0080] Please refer to Figure 1F , Figure 2F , Figure 3F , Figure 4F and Fig. 5F , the plurality of pixel driving structures PX of the display device 10 include a repaired pixel driving structure (ie, a second pixel driving structure PX2). The plurality of light emitting element groups G200 include a repaired light emitting element group (ie, a light emitting element group G200' electrically connected to the second pixel driving structure PX2). Please refer to Figure 1F and Fig. 5F The light emitting element 200' of the repaired light emitting element group (i.e., a light emitting element group G200' electrically connected to the second pixel driving structure PX2) is connected to the repair pad 124 of the sub-pixel driving structure SPX2 of the repaired pixel driving structure (i.e., the second pixel driving structure PX2). Figure 1F and Figure 4FIn some embodiments, the light-emitting element 200R of the repaired light-emitting element group (i.e., a light-emitting element group G200' electrically connected to the second pixel driving structure PX2) is connected to the main pad 122 of the sub-pixel driving structure SPX1 of the repaired pixel driving structure (i.e., the second pixel driving structure PX2), and the light-emitting element 200B of the repaired light-emitting element group (i.e., a light-emitting element group G200' electrically connected to the second pixel driving structure PX2) is connected to the main pad 122 of the sub-pixel driving structure SPX3 of the repaired pixel driving structure (i.e., the second pixel driving structure PX2).

[0081] Please refer to Figure 1F , Figure 4F and Fig. 5F , the first light shielding layer 400 further includes an opening 400a and a processed opening 400b. The opening 400a is located above the main pad 122 of the sub-pixel driving structure SPX2 of the repaired pixel driving structure (i.e., the second pixel driving structure PX2). The processed opening 400b is located above the repair pad 124 of the sub-pixel driving structure SPX2 of the repaired pixel driving structure (i.e., the second pixel driving structure PX2) and the light-emitting element 200' of the repaired light-emitting element group (i.e., a light-emitting element group G200' electrically connected to the second pixel driving structure PX2). Please refer to Figure 1F and Fig. 5F The display device 10 further includes a second light shielding layer 500 disposed on the planar layer 300 and the first light shielding layer 400. The second light shielding layer 500 includes a light shielding pattern 502 filling the opening 400a of the first light shielding layer 400. The light shielding pattern 502 shields the main pad 122 of the sub-pixel driving structure SPX2 of the repaired pixel driving structure (i.e., the second pixel driving structure PX2).

Claims

1. A display device, characterized in that: include: A driving circuit substrate having a plurality of pixel driving structures, wherein each pixel driving structure includes a plurality of sub-pixel driving structures, each sub-pixel driving structure includes a sub-pixel driving circuit, at least one main pad and at least one repair pad, and the at least one main pad and the at least one repair pad are electrically connected to the sub-pixel driving circuit; A plurality of light emitting element groups, respectively electrically connected to the plurality of pixel driving structures, wherein each of the light emitting element groups comprises a first light emitting element; a flat layer, disposed on the driving circuit substrate and covering the plurality of light emitting element groups; and a first light shielding layer, disposed on the flat layer, wherein the plurality of pixel driving structures include a normal pixel driving structure, the plurality of light emitting element groups include a normal light emitting element group, the normal light emitting element group is electrically connected to the normal pixel driving structure, the first light emitting element of the normal light emitting element group is connected to the at least one main pad of the normal pixel driving structure, and the first light shielding layer includes: A first entity portion shielding the at least one repair pad of the normal pixel driving structure; as well as A first opening is located above the first light emitting element of the normal light emitting element group.

2. The display device according to claim 1, characterized in that The multiple sub-pixel driving structures of each pixel driving structure include a first sub-pixel driving structure and a second sub-pixel driving structure, and each light-emitting element group further includes a second light-emitting element. The first light-emitting element of the normal light-emitting element group is connected to the at least one main pad of the first sub-pixel driving structure of the normal pixel driving structure, and the second light-emitting element of the normal light-emitting element group is connected to the at least one main pad of the second sub-pixel driving structure of the normal pixel driving structure. The first light-shielding layer further includes a second solid portion and a second opening. The second solid portion shields the at least one repair pad of the second sub-pixel driving structure of the normal pixel driving structure, and the second opening is located above the second light-emitting element of the normal light-emitting element group.

3. The display device according to claim 2, characterized in that Each of the multiple sub-pixel driving structures of the pixel driving structure further includes a third sub-pixel driving structure, and each of the light-emitting element groups further includes a third light-emitting element. The third light-emitting element of the normal light-emitting element group is connected to at least one main pad of the third sub-pixel driving structure of the normal pixel driving structure. The first light-shielding layer further includes a third solid portion and a third opening. The third solid portion shields at least one repair pad of the third sub-pixel driving structure of the normal pixel driving structure, and the third opening is located above the third light-emitting element of the normal light-emitting element group.

4. The display device according to claim 1, characterized in that Each of the multiple sub-pixel driving structures of the pixel driving structure includes a second sub-pixel driving structure, and each of the light-emitting element groups further includes a second light-emitting element. The multiple pixel driving structures include a repaired pixel driving structure, and the multiple light-emitting element groups include a repaired light-emitting element group. The repaired light-emitting element group is electrically connected to the repaired pixel driving structure, and the second light-emitting element of the repaired light-emitting element group is connected to the at least one repair pad of the second sub-pixel driving structure of the repaired pixel driving structure. The first light-shielding layer further includes a second opening and a processed opening. The second opening is located above the at least one main pad of the second sub-pixel driving structure of the repaired pixel driving structure, and the processed opening is located above the at least one repair pad of the second sub-pixel driving structure of the repaired pixel driving structure and the second light-emitting element of the repaired light-emitting element group.

5. The display device according to claim 4, characterized in that Also includes: A second light shielding layer is disposed on the flat layer and the first light shielding layer, wherein the second light shielding layer includes a light shielding pattern filling the second opening of the first light shielding layer, and the light shielding pattern shields at least one main pad of the second sub-pixel driving structure of the repaired pixel driving structure.

6. A method for manufacturing a display device, characterized in that: include: A driving circuit substrate is provided, which has a plurality of pixel driving structures, wherein each pixel driving structure includes a plurality of sub-pixel driving structures, each sub-pixel driving structure includes a sub-pixel driving circuit, at least one main pad and at least one repair pad, and the at least one main pad and the at least one repair pad are electrically connected to the sub-pixel driving circuit; Bonding a plurality of light emitting elements to a plurality of main pads of the plurality of sub-pixel driving structures of the plurality of pixel driving structures; forming a flat layer on the driving circuit substrate to cover the plurality of light emitting elements; as well as A first light shielding layer is formed on the flat layer, wherein the first light shielding layer has a plurality of openings, the plurality of openings are located above at least a portion of the plurality of light emitting elements, and the plurality of entity portions of the first light shielding layer shield at least a portion of the plurality of repair pads of the plurality of pixel driving structures.

7. The method for manufacturing a display device according to claim 6, wherein: Also includes: After the plurality of light-emitting elements are bonded to the plurality of main pads, a detection process is performed to detect whether the plurality of light-emitting elements can be driven by the driving circuit substrate to emit light, wherein in the detection process, it is found that a light-emitting element on the at least one main pad of a sub-pixel driving structure of the pixel driving structure cannot emit light; After performing the inspection process and before forming the planar layer, bonding a repairing light emitting element to the at least one repairing pad of the sub-pixel driving structure; and A processing opening is formed in the first light shielding layer, wherein the processing opening overlaps with the light emitting element for repair.

8. The method for manufacturing a display device according to claim 7, wherein: Also includes: A second light-shielding layer is formed on the first light-shielding layer and the planar layer, wherein the second light-shielding layer includes a light-shielding pattern, the multiple openings include an opening located on at least one main pad of the sub-pixel driving structure of the pixel driving structure, and the light-shielding pattern fills the opening of the first light-shielding layer and shields the at least one main pad of the sub-pixel driving structure of the pixel driving structure.

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