DISPLAY PANEL, METHOD FOR MANUFACTURING THE SAME, DISPLAY SCREEN AND DISPLAY DEVICE

A display panel, a method for manufacturing the display panel, a display screen, and a display device are provided. The display panel includes a substrate and multiple first wires. The substrate includes a first surface and a second surface that are opposite. The first surface faces a display face of the display panel. The multiple first wires are arranged on a side of the first surface away from the second surface. The second surface includes a first division and a second division. A maximum distance between adjacent first wires in the first division is H1, and a maximum distance between adjacent first wires in the second division is H2. H1 is greater than H2. The distance between adjacent first wires in the first division is increased to be greater than the distance between adjacent first wires in the second division.

The present application claims priority to Chinese Patent Application No. 202311867798.5, titled “DISPLAY PANEL, METHOD FOR MANUFACTURING THE SAME, DISPLAY SCREEN AND DISPLAY DEVICE”, filed on Dec. 29, 2023 with the China National Intellectual Property Administration, which is incorporated herein by reference in its entirety.

FIELD

The present disclosure relates to the field of displays, and in particular to a display panel, a method for manufacturing the display panel, a display screen, a display device and a tiled display apparatus.

BACKGROUND

Seamless tiled displays using Micro LEDs depend on the technology of wiring on side/back surfaces. Wiring on the back surface is formed by photolithography or engraving. How to improve the reliability of wiring on the side/back surface is a problem to be solved urgently.

SUMMARY

A display panel, a method for manufacturing the display panel, a display screen, a display device and a tiled display apparatus are provided according to the present disclosure, to solve a problem that proneness to detachment of a patterned dry film from the display panel during removal of a supporting film affects a product yield in related technology.

A display panel is provided in an aspect of the present disclosure. The display panel includes a substrate and multiple first wires. The substrate includes a first surface and a second surface that are opposite to each other. The first surface faces a display face of the display panel. The multiple first wires are arranged on a side of the first surface away from the second surface. The second surface includes a first division and a second division. A maximum distance between two adjacent first wires in the first division is H1, and a maximum distance between two adjacent first wires in the second division is H2. H1is greater than H2. The distance between adjacent first wires in the first division is increased to be greater than the distance between adjacent first wires in the second division. In this way, an area of a patterned dry film that is formed by the first wires in the first division and attached to the display panel is increased, to reduce a risk of detachment of the patterned dry film during removal of a supporting film, to improve a product yield.

A method for manufacturing the display panel is provided in another aspect of the present disclosure. The method includes: providing a substrate, where the substrate has a first surface and a second surface that are opposite to each other, and the second surface includes a first division and a second division; and forming multiple first wires on the second surface, where a maximum distance between two adjacent first wires in the first division is H1, a maximum distance between two adjacent first wires in the second division is H2, and H1is greater than H2. In the display panel manufactured with the method, the distance between adjacent first wires in the first division on the second surface is increased, to increase an area of a patterned dry film that is formed by the first wires in the first division and attached to the display panel, to reduce a risk of detachment of the patterned dry film during removal of a supporting film, to improve a product yield.

A display screen is further provided in another aspect of the present disclosure. The display screen includes the display panel described above or a display panel manufactured with the method described above. In the display screen, the distance between adjacent first wires in the first division is greater than the distance between adjacent first wires in the second division on the second surface of the display panel. In this way, an area of a patterned dry film that is formed by the first wires in the first division and attached to the display panel is increased, to reduce a risk of detachment of the patterned dry film during removal of a supporting film, to improve a yield of the display screen.

A display device is further provided in another aspect of the present disclosure. The display device includes the display screen described above. In the display device, the distance between adjacent first wires in the first division is greater than the distance between adjacent first wires in the second division on the second surface of the display panel of the display screen. In this way, an area of a patterned dry film that is formed by the first wires in the first division and attached to the display panel is increased, to reduce a risk of detachment of the patterned dry film during removal of a supporting film, to improve a yield of the display device.

A tiled display apparatus is further provided in another aspect of the present disclosure. The tiled display apparatus includes multiple of the display device described above. In the tiled display apparatus, the distance between adjacent first wires in the first division is greater than the distance between adjacent first wires in the second division on the second surface of the display panel of the display screen in each display device. In this way, an area of a patterned dry film that is formed by the first wires in the first division and attached to the display panel is increased, to reduce a risk of detachment of the patterned dry film during removal of a supporting film, to improve a yield of the tiled display apparatus.

The display panel according to the embodiments of the present disclosure includes an active area, a substrate and multiple first wires. The substrate includes a first surface and a second surface that are opposite to each other. The first surface faces a display face of the display panel. The multiple first wires are arranged on a side of the first surface away from the second surface. A maximum distance between two adjacent first wires in the first division is H1, and a maximum distance between two adjacent first wires in the second division is H2. H1is greater than H2. The distance between adjacent first wires in the first division is increased to be greater than the distance between adjacent first wires in the second division. In this way, an area of a patterned dry film that is formed by the first wires in the first division and attached to the display panel is increased, to reduce a risk of detachment of the patterned dry film during removal of a supporting film, to improve a product yield.

Reference numerals are listed as follows.

DETAILED DESCRIPTION

It should be noted that the embodiments of the present disclosure and features in the embodiments can be combined with each other without conflict. The present disclosure is described in detail below in conjunction with the embodiments and with reference to the drawings.

The embodiments of the present disclosure are clearly and completely described hereinafter in conjunction with the drawings of the embodiments of the present disclosure. Apparently, the described embodiments are only some embodiments of the present disclosure, rather than all embodiments.

It should be noted that the terms “first”, “second” and the like in the specification, the claims and the drawings of the present disclosure are used to distinguish similar objects rather than to describe a particular sequence or order. It should be understood that the terms used in such a way are interchangeable in proper circumstances to describe the embodiments of the present disclosure. Moreover, the terms such as “include/comprise”, “have” or any other variants thereof are intended to be non-exclusive. For example, a process, method, system, product or device including a series of steps or elements includes not only the expressly listed steps or elements but also other steps or elements that are not enumerated or are inherent for the process, method, system, product or device.

As described in the Background, in the conventional technology, the display panels depend on wiring on side/back surfaces. Wiring on the back surface is implemented by photolithography or engraving. How to improve the reliability of wiring on the side/back surface is a problem to be solved urgently. A display panel, a method for manufacturing the display panel, a display screen, a display device and a tiled display apparatus are provided according to the embodiments of the present disclosure.

A display panel is provided according to an embodiment of the present disclosure. As illustrated inFIG.1andFIG.2, the display panel includes a substrate10and multiple first wires20. The substrate10has a first surface110and a second surface140that are opposite to each other. The first surface110faces a display face of the display panel. The first wires20are arranged on a side, of the first surface110, away from the second surface140. The second surface140includes a first division101and a second division102. A maximum distance between two adjacent first wires20in the first division101is H1, and a maximum distance between two adjacent first wires20in the second division102is H2. H1is greater than H2.

In the above embodiment, the second surface140, of the substrate10, away from the display face of the display panel includes the first division101and the second division102. Regions of the first wires20are hollows formed by patterning a dry film. The distance between adjacent first wires20in the first division101is greater than the distance between adjacent first wires20in the second division102to increase an area of the patterned dry film that is formed by the first wires20in the first division101and attached to the display panel, to reduce a risk of detachment of the patterned dry film during removal of a supporting film, to improve a product yield.

Core principles of the present disclosure are described above. The embodiments of the present disclosure are clearly and completely described hereinafter in conjunction with the drawings in the embodiments of the present disclosure.

FIG.1is a top view of part of a second surface of a display panel. As illustrated inFIG.1andFIG.2, the display panel according to an embodiment of the present disclosure includes the substrate10and the multiple first wires20. The substrate10has the first surface110arranged close to the display face of the display panel. The substrate10further has the second surface140opposite to the first surface110. As illustrated inFIG.1, the second surface140includes the first division101and the second division102. The distance between adjacent first wires20in the first division is H1, and the distance between adjacent first wires in the second division102is H2. H1is greater than H2. Regions of the first wires20are hollows formed by patterning the dry film. In this way, the area of the patterned dry film that is formed by the first wires20in the first division101and attached to the display panel is increased, to reduce a risk of detachment of the patterned dry film during removal of a supporting film, to improve a product yield.

In the above embodiments, as illustrated inFIG.1andFIG.2, the first surface110of the substrate10of the display panel may be provided with a backlight layer112, a light-emitting device111, and a bonding layer113. The second surface140of the substrate10of the display panel may be provided with a connector115. Functional layers can be arranged on the first surface110and the second surface140of the display panel properly according to actual situations, which is not limited in the present disclosure. In a case that another layer is arranged on the second surface140, the first wires20on the second surface140are not in direct contact with the substrate.

In the above embodiments, other functional layers may be arranged on the first surface and the second surface of the substrate. Therefore, in the present disclosure, the first wires20may not be in direct contact with the substrate.

In some embodiments, as illustrated inFIG.1andFIG.2, the multiple first wires are arranged along a first direction X and extend along a second direction Y. The second direction Y intersects with the first direction X.

In the above embodiments, as illustrated inFIG.1andFIG.2, the first wires20on the second surface140of the substrate10of the display panel are arranged along the first direction X and extend along the second direction Y. The first direction X intersects with the second direction Y.

In some embodiments, as illustrated inFIG.1andFIG.2, the multiple first wires are arranged along the first direction X, and the first division101and the second division102are arranged along the first direction.

In the above embodiments, as illustrated inFIG.1andFIG.2, the first division101and the second division102on the second surface140of the substrate10are arranged along the first direction X, and the first wires20in the first division101and the first wires20in the second division102are arranged along the first direction X.

In some embodiments, as illustrated inFIG.1andFIG.2, the second surface140includes a first wiring region120. The first wiring region120includes the first division101and the second division102. The first division101is arranged on a side, of the second division102, close to an edge of the first wiring region120.

In the above embodiments, as illustrated inFIG.1andFIG.2, the second surface140of the substrate10includes the first wiring region120. Both the first division101and the second division102are arranged within the first wiring region120. The first division101is arranged close to an edge of the first wiring region120, and the second division102is arranged close to a center of the first wiring region120. By arranging the first division close the edge of the first wiring region120on the second surface140, the distance between adjacent first wires20in the first division101is increased. Regions of the first wires20are hollows formed by patterning the dry film. In this way, and an area of intervals between adjacent first wires20is increased, to enhance adhesion of the dry film formed between adjacent hollows before removal of the dry film.

In some embodiments, as illustrated inFIG.1, a distance between ends of the adjacent first wires20in the first division101is H1.

In some embodiments, as illustrated inFIG.3, there is a first interval201or a second interval202between adjacent first wires20in the first division101. The first interval201alternates with the second interval202in the first direction X. The first interval201tapers along the second direction, and the second interval202tapers against the second direction.

In the above embodiment, as illustrated inFIG.3, the multiple first wires20in the first wiring region120on the second surface are arranged along the first direction X and extend along the second direction Y. The second direction Y intersects with the first direction X. The multiple first wires20are parallel to each other. There is the first interval201or the second interval202between adjacent first wires20in the first division101. The first interval201alternates with the second interval202in the first direction X, and an average area of the first interval201and the second interval202is greater than an average area of intervals between adjacent first wires20in the second division102. Regions of the first wires20are hollows formed by patterning the dry film, and the area of the patterned dry film that is formed by the first wires20in the first division101and attached to the display panel is increased, to reduce a risk of detachment of the patterned dry film during removal of the supporting film, to improve a product yield. By alternating the first interval201with the second interval202, distances between the first wires20in the first division101are even, to enhance the reliability of the patterned dry film formed by the intervals between the first wires20, to avoid damage to part of the dry film during removal of the dry film resulted from uneven adhesion of different parts of the dry film due to an excessive or insufficient interval between some of the first wires20.

For example, as illustrated inFIG.3, the multiple first wires20are arranged along the first direction X and extend along the second direction Y. The second direction Y intersects with the first direction X. There is the first interval201or the second interval202between adjacent first wires20in the first division101. The first interval201alternates with the second interval202in the first direction X. The first interval201tapers along the second direction Y, and the second interval202tapers against the second direction Y.

In the above embodiments, as illustrated inFIG.3, there is the first interval201or the second interval202between adjacent first wires20on the second surface140of the display panel. The first interval201tapers along the second direction Y, and the second interval202tapers against the second direction Y. The first interval201and the second interval202are arranged along the first direction X in the first division101to uniform an average width of a same interval. Regions of the first wires20are hollows formed by patterning the dry film. In this embodiment, the width of a same interval changes gradually along the second direction Y, and the first interval201alternates with the second interval202, avoiding that the interval between adjacent first wires20occupies too much space at a same end of the second direction Y. The first interval201alternates with the second interval202, and distances between first wires20in the first division101are even, to enhance the reliability of the patterned dry film formed by the first wires20, to avoid damage to part of the dry film during removal of the dry film resulted from uneven adhesion of different parts of the dry film due to an excessive or insufficient interval between some of the first wires20.

For example, as illustrated inFIG.4, there is a first interval201or a second interval202between adjacent first wires20in the first division101included in the first wiring region120on the second surface140of the display panel. An average width, of the first interval201and the second interval202in the first division101, in the first direction X is greater than a distance, between adjacent first wires20in the second division102, in the first direction X. The multiple first wires are parallel to each other. The first interval201alternates with the second interval202. Regions of the first wires20are hollows formed by patterning a dry film. In this way, distances between the first wires20in the first division101are even, to enhance the reliability of the patterned dry film formed by the first wires20, to avoid damage to part of the dry film during removal of the dry film resulted from uneven adhesion of different parts of the dry film due to an excessive or insufficient interval between some of the first wires20.

For example, as illustrated inFIG.5, the display panel includes a drive chip30arranged on the second surface140. Multiple first wires20are arranged along the first direction X and extend along the second direction Y. The first wire20has a first end and a second end in the second direction Y. The first end is close to the edge of the second surface140, and the second end is electrically connected to the drive chip30. A distance between ends of adjacent the first wires20in the first division101is H1, and a distance between ends of the adjacent first wires20in the second division102is H3. H3is less than H1.

In the above embodiment, as illustrated inFIG.5, the first wires20in the first wiring region120on the second surface140of the display panel are arranged along the first direction X and extend along the second direction Y. The first wire20has the first end and the second end. The first end is connected to the edge of the second surface, and the second end is electrically connected to the drive chip30arranged on the second surface140. There are multiple distances between first ends of adjacent first wires20and multiple distances between second ends of adjacent first wires20. A distance between ends of the adjacent first wires20in the first division101is H1, and a distance between ends of the adjacent first wires20in the second division102is H3. H3is less than H1. The distance H1between ends of adjacent first wires20in the first division101is increased to be greater than the distance H3between ends of adjacent first wires20in the second division102, where H3is less than or equal to H2. Regions of the first wires20are hollows formed by patterning a dry film. In this way, an area of the patterned dry film formed adjacent first wires20is increased, to enhance the adhesion of the patterned dry film in the first division101, and the patterned dry film in the first division101is not prone to be damaged during removal of the supporting film.

In some embodiments, as illustrated inFIG.6, the first wire20in the first division101includes a first segment203and a second segment204that are connected. A distance between at least two adjacent first segments203is H1, and a distance between any two adjacent second segments204is greater than or equal to H2.

In the above embodiment, as illustrated inFIG.6, first segments203of multiple first wires20in the first wiring region120on the second surface140are parallel to each other, and multiple second segments204of the multiple first wires20are not parallel. The multiple first wires20are arranged along the first direction X and extend along the second direction Y.

For example, as illustrated inFIG.6, the first wire20in the first division101on the second surface140includes the first segment203and the second segment204. A distance between adjacent first segments203is equal to the maximum distance H1between adjacent first wires20in the first division101. A distance between any adjacent second segments204is A. A distance between adjacent first wires20in the second division102is H2, and A is greater than or equal to H2.

For example, as illustrated inFIG.7, the first wire20in the first division101on the second surface140includes a first segment203and a second segment204. A distance between adjacent first segments203is equal to the maximum distance H1between adjacent first wires20in the first division101. A distance between any adjacent second segments204is A. A distance between adjacent first wires20in the second division102is H2, and A is greater than or equal to H2. Multiple first segments203arranged in the first division101are the equal in length. The first wires20are arranged along the first direction X and extend along the second direction Y.

For example, as illustrated inFIG.8, the first wire20in the first division101on the second surface140includes a first segment203and a second segment204. A distance between adjacent first segments203is equal to the maximum distance H1between adjacent first wires20in the first division101. A distance between any adjacent second segments204is A. A distance between adjacent first wires20in the second division102is H2, and A is greater than or equal to H2. The multiple first wires20are arranged along the first direction X. Lengths of the multiple first segments203are in descending order along the first direction X. The first wires20are arranged along the first direction X and extend along the second direction Y.

In the above embodiments, the distance between second segments204of adjacent first wires20is increased on a premise of ensuring that the distance H1between at least two adjacent first segments203in the first division101is greater than or equal to the distance H2between any two adjacent second segments204, and A is greater than or equal to H2, further increasing the area of the patterned dry film that is formed by the first wires20in the first division101and attached to the display panel. Regions of the first wires20are hollows formed by patterning the dry film.

In some embodiments, as illustrated inFIG.9, the first wire20in the first division101includes a first segment203. First segments203of multiple first wires20are arranged along the first direction X. The first segments203are inclined relative to the first wires20in the second division102.

In the above embodiments, as illustrated inFIG.9, the first wire20in the first division101on the second surface140of the display panel includes the first segment203. Multiple first segments203in the first division101are arranged along the first direction X. The first segments203are not parallel to the first wires20in the second division102.

In some embodiments, as illustrated inFIG.9, the first segment203has a first side and a second side that are opposite to each other along a direction in which the first segment203extends. Along a direction from the first side to the second side, the first segment203in the first division101is inclined away from the first wires20in the second division102.

In the above embodiment, as illustrated inFIG.9, the first side of the first segment203is closer to the first wires20in the second division102than the second side of the first segment203. The second side of the first segment203is closer to the edge of the first division101than the first side of the first segment203.

In some embodiments, as illustrated inFIG.9, the two sides of the first segment203are connected to a second segment204and a third segment205respectively. Distances each of which is between two adjacent third segments205are equal. Not all distances each of which is between two adjacent second segments204are equal.

In the above embodiments, as illustrated inFIG.9, the first wire20in the first division101on the second surface140of the display panel further includes the second segment204and the third segment205. The second segment204and the third segment205are connected to two sides of the first segment203respectively. In addition, distances each of which is between two adjacent third segments205are equal, and not all distances each of which is between two adjacent second segments204are equal. As illustrated inFIG.9, along the first direction X, a distance between a first second segment204and a second segment204is equal to a distance between the second segment204and a third second segment204, and the distance between the first second segment204and the second segment204is not equal to a distance between the third second segment204and a fourth second segment204.

For example, as illustrated inFIG.9, the first wire20in the first division101includes the first segment203. First segments203of the multiple first wires20are arranged along the first direction X. The first segments203are inclined relative to the first wires20in the second divisions. The first segment203has the first side and the second side that are opposite to each other along the direction in which the first segment203extends. Along the direction from the first side to the second side, the first segment203in the first division101is inclined away from the first wires20in the second division102. Two sides of the first segment203are connected to the second segment204and the third segment205, respectively. Distances each of which is between two adjacent third segments205are equal, and not all distances each of which is between two adjacent second segments204are equal. Regions of the first wires20are hollows formed by patterning a dry film, and a minimum distance between adjacent first segments203, a minimum distance between adjacent second segments204, and a minimum distance between adjacent third segments205are greater than H2and an average distance between adjacent first wires20is increased, to increase an area of the attached patterned dry film formed adjacent first wires20, to enhance the adhesion of the patterned dry film.

In some embodiments, as illustrated inFIG.9, the multiple third segments205are parallel to each other, and the multiple second segments204are parallel to each other.

For example, as illustrated inFIG.9, the first wire20in the first division101includes the first segment203. First segments203of the multiple first wires20are arranged along the first direction X. The first segments203are inclined relative to the first wires20in the second divisions. The first segment203has the first side and the second side that are opposite to each other along the direction in which the first segment203extends. Along the direction from the first side to the second side, the first segment203in the first division101is inclined away from the first wires20in the second division102. Two sides of the first segment203are connected to the second segment204and the third segment205, respectively. Distances each of which is between two adjacent third segments205are equal, and not all distanced each of which is between two adjacent second segments204are equal. The multiple third segments205are parallel to each other, and the multiple second segments204are parallel to each other. Regions of the first wires20are hollows formed by patterning a dry film, and a minimum distance between adjacent first segments203, a minimum distance between adjacent second segments204, and a minimum distance between adjacent third segments205are greater than H2and an average distance between adjacent first wires20is increased, to increase an area of the attached patterned dry film formed by adjacent first wires20. In addition, areas of intervals, between adjacent first wires20, forming the patterned dry film are even, to enhance the adhesion and the reliability of the patterned dry film, to avoid damage to part of the dry film during removal of the dry film resulted from uneven adhesion of different parts of the dry film due to an excessive or insufficient interval between some of the first wires20.

In some embodiments, as illustrated inFIG.1toFIG.9, the multiple first wires in the second division102are arranged in parallel.

In the above embodiments, as illustrated inFIG.1toFIG.9, the multiple first wires20in the second division102on the second surface140of the substrate10are parallel to each other and are arranged along the first direction X.

In some embodiments, as illustrated inFIG.1,FIG.2andFIG.10, the multiple first wires20are arranged along the first direction X, and the substrate10has side surfaces150connecting the first surface110and the second surface140. At least one of the side surfaces150includes a second wiring region130. The second wiring region130includes a third division103and a fourth division104that are arranged along the first direction X. A maximum distance between any two adjacent second wires40in the third division103is H4, and a maximum distance between any two adjacent second wires40in the fourth division104is H5. H4is greater than or equal to H5.

In the above embodiment, as illustrated inFIG.1,FIG.2andFIG.10, the substrate10of the display panel further has multiple side surfaces150connecting the first surface110and the second surface140. At least one of the side surfaces150includes the second wiring region130. The second wiring region130includes the third division103and the fourth division104. The third division103and the fourth division104are arranged along the first direction X. The first direction X is the direction along which the first wires20on the second surface are arranged. The maximum distance between any two adjacent second wires in the third division103is H4, the maximum distance between any two adjacent second wires40in the fourth division104is H5, and H4is greater than or equal to H5. Regions of the second wires40are hollows formed by patterning a dry film. On a premise of increasing the distance between adjacent first wires20in the first division101on the back surface of the display panel, the distance between adjacent second wires40in the third division103on the side surface150of the display panel is not less than the distance between adjacent second wires40in the fourth division104, to increase an area of the patterned dry film that is formed by the second wires40in the third division103connected to the first division101and is attached to the display panel, to enhance the adhesion of the patterned dry film formed by adjacent second wires40on the side surface150.

In the above embodiment, as illustrated inFIG.2, the side surface150of the substrate10of the display panel may be provided with the second wires40and protective adhesive114. Functional layers can be arranged on the side surface of the display panel properly according to actual situations, which is not limited in the present disclosure. In a case that another layer is arranged on the side surface150, the second wires40on the side surface150are not in direct contact with the substrate.

In some embodiments, as illustrated inFIG.10, the second wires40extend along the third direction Z. The third direction Z intersects with the first direction X.

In the above embodiments, as illustrated inFIG.2andFIG.10, the second wires on the side surface150of the display panel are arranged along the first direction X and extend along the third direction Z. The third direction Z intersects with the first direction X. The present disclosure is not limited to a case that the third direction Z is perpendicular to the first direction X as illustrated inFIG.10as long as the third direction Z intersects with the first direction X.

In some embodiments, as illustrated inFIG.10, the third division103and the fourth division104are arranged along the first direction X.

In the above embodiment, as illustrated inFIG.10, the third division103and the fourth division104on the side surface150of the display panel are arranged along the first direction X within the second wiring region130. The third division103is arranged close to the edge of the second wiring region130, and the fourth division104is arranged close to the center of the second wiring region130.

For example, as illustrated inFIG.1,FIG.2andFIG.10, the back surface, i.e., the second surface140, of the display panel includes the first division101and the second division102. The distance between adjacent first wires20in the first division101is H1, the distance between adjacent first wires20in the second division102is H2, and H1is greater than H2. The maximum distance between any two adjacent second wires40in the third division103on the side surface150of the display panel is H4, the maximum distance between any two adjacent second wires40in the fourth division104is H5, and H4is greater than or equal to H5. The regions of the second wires40are hollows formed by patterning the dry film. On a premise of setting the distance between adjacent second wires40in the third division103on the side surface150of the display panel to be not less than the distance between adjacent second wires40in the fourth division104on the side surface150of the display panel, the distance between adjacent second wires40in the third division103on the back surface of the display panel is increased, and an area of the patterned dry film that is formed by second wires40in the third division103and attached to the display panel is increased, to enhance the adhesion of the patterned dry film formed by the second wires40on the side surface150.

In some embodiments, as illustrated inFIG.1,FIG.2andFIG.11, the first division101is connected to the third division103, and the second division102is connected to the fourth division104.

In the above embodiment, as illustrated inFIG.1,FIG.2andFIG.11, in a case of spreading the side surface150and the second surface140(the back surface) of the display panel, the first division101on the second surface140of the display panel is arranged corresponding to the third division103on the side surface150of the display panel, and the first wires20arranged in the first division101are connected to the second wires40arranged in the third division103respectively. The second division102on the second surface140of the display panel is arranged corresponding to the fourth division104on the side surface150of the display panel, and the first wires20in the second division102are connected to the second wires40in the fourth division104respectively.

For example, as illustrated inFIG.2andFIG.11, H4is equal to H1. The back surface, i.e., the second surface140, of the display panel includes the first division101and the second division102. A distance between adjacent first wires20in the first division101is H1, a distance between adjacent first wires20in the second division102is H2, and H1is greater than H2. A maximum distance between any two adjacent second wires40in the third division103on the side surface150of the display panel is H1, and a maximum distance between any two adjacent second wires40in the fourth division104is H1. H1is greater than or equal to H5.

In the above embodiment, both the distance between adjacent second wires40in the third division103and the distance between adjacent second wires40in the fourth division104are be equal to the maximum distance H1between adjacent first wires20in the first division101. Regions of the second wires40are hollows formed by patterning a dry film, and an area of the patterned dry film formed by adjacent second wires40in the third division103is increased, to enhance the adhesion of the patterned dry film formed by adjacent second wires40on the side surface150, and the dry film is not prone to be damaged during removal of the supporting film.

In some embodiments, as illustrated inFIG.12, there is a third interval401or a fourth interval402between adjacent second wires40in the third division103. The third interval401alternates with the fourth interval402along the first direction X. The third interval401tapers against the third direction Z, and the fourth interval402tapers along the third direction Z. The third direction Z intersects with the first direction X.

In the above embodiment, as illustrated inFIG.12, there is the third interval401or the fourth interval402between adjacent second wires40in the second wiring region130on the side surface150of the display panel. The third interval401and the fourth interval402are arranged along the first direction X in the second wiring region130. The third interval401tapers against the third direction Z, and the fourth interval402tapers along the third direction Z. The third direction Z intersects with the first direction X. The present disclosure is not limited to a case that the third direction Z is perpendicular to the first direction X as illustrated inFIG.12.

In some embodiments, as illustrated inFIG.2,FIG.10andFIG.13, the display panel includes the drive chip30or a drive module arranged on the second surface140. The substrate10has side surfaces150connecting the first surface110and the second surface140. The third segments205pass through the side surface150and extend to the second surface140. The second segments204are electrically connected to the drive chip30or the drive module.

For example, as illustrated inFIG.2,FIG.10andFIG.13, the first wires20in the first division101of the display panel each include the first segment203. The first segments203of the multiple first wires20are arranged along the first direction X. The first segments203are inclined relative to the first wires20in the second division102. The first segment203has the first side and the second side that are opposite to each other along the direction in which the first segment203extends. The first segments203are equally spaced on first sides of the first segments203. Along the direction from the first side to the second side, the first segment203in the first division101is inclined away from the first wires20in the second division102. Two sides of the first segment203are connected to the second segment204and the third segment205, respectively. Distances each of which is between two adjacent third segments205are equal, and not all distances each of which is between two adjacent second segments204are equal. The display panel includes the drive chip30or the drive module arranged on the second surface140. The substrate10has the side surfaces150connecting the first surface110and the second surface140. The third segments205pass through the side surface150and extend to the second surface140. The second segments204are electrically connected to the drive chip30or the drive module. Regions of the first wires are hollows formed by patterning the dry film. On a premise of setting the distance between adjacent second wires40in the third division103on the side surface150to be not less than the distance between adjacent second wires40in the fourth division104, the distance between adjacent first segments203, the distance between adjacent second segments204, and the distance between adjacent third segments205of adjacent first wires20in the first division101on the back surface of the display panel are increased, and the area of the patterned dry film that is formed by the first wires20in the first division101and attached to the display panel is increased, to enhance the adhesion of the patterned dry film between adjacent first wires20in the first division101.

In the above embodiment, as illustrated inFIG.13, the second segments204in the first division101of the display panel are electrically connected to the drive chip30or the drive module on the second surface of the display panel. As illustrated inFIG.10, the second wire40in the third division103on the side surface is part of the third segment205, and the third segment205extends to the second surface passing through the side surface.

In some embodiments, the first surface is provided with a signal bonding region, a multiplexer, and a drive circuit. The multiplexer is electrically connected to the signal bonding region and is configured to receive a display control signal transmitted from the signal bonding region. The drive circuit is electrically connected to the multiplexer, and is configured to receive the display control signal and control brightness and color of pixels in the active area of the display panel in response to the display control signal.

In the above embodiment, the first surface is arranged in the display face of the display panel. The first surface is provided with the signal bonding region, the multiplexer, and the drive circuit. The multiplexer is electrically connected to the signal bonding region, and is configured to receive the display control signal transmitted from the signal bonding region. The drive circuit is electrically connected to the multiplexer, and is configured to receive the display control signal and control the brightness and the color of the pixels in the active area of the display panel in response to the display control signal. The active area of the display panel may further be provided with other functional devices or functional regions, which is not limited in the present disclosure.

A method for manufacturing a display panel is further provided according to an embodiment of the present disclosure. As illustrated inFIG.14, the method includes the following steps S100and S200.

In step S100, a substrate is provided. The substrate has a first surface and a second surface that are opposite to each other, and the second surface includes a first division and a second division.

In step S200, multiple first wires are formed on the second surface. A maximum distance H1between two adjacent first wires in the first division is greater than a maximum distance H2between two adjacent first wires in the second division.

In the display panel manufactured with the method described above, the second surface, of the substrate, away from the display face of the display panel includes the first division and the second division. The distance between adjacent first wires in the first division is greater than the distance between adjacent first wires in the second division, to increase an area of the patterned dry film that is formed by the first wires in the first division and attached to the display panel, to reduce a risk of detachment of the patterned dry film during removal of a supporting film, to improve a product yield.

As illustrated inFIG.15, a top view of part of the second surface140of the display panel is taken as an example. Before the dry film is removed, intervals between adjacent first wires20on the second surface140form a dry film50, and the first wires20are patterns in the dry film50. A shape of the first wire20depends on actual situations.

Exemplary embodiments of the method for manufacturing the display panel according to the present disclosure are described in detail below in conjunction with the drawings. However, the exemplary embodiments may be implemented in various forms, and should not be construed as being limited to the embodiments illustrated herein. It should be understood that these embodiments are described to cause the present disclosure to be thorough and complete, and convey a full concept of the exemplary embodiments.

First, step S100is performed. That is, the substrate is provided. The substrate has the first surface and the second surface that are opposite to each other, and the second surface includes the first division and the second division.

A substrate having a first surface and a second surface that are opposite to each other is provided. The second surface includes a first division and a second division. The first surface is arranged close to an active area of the display panel, and the second surface is arranged away from the active area of the display panel.

After the step of providing the substrate, step S200is performed. That is, multiple first wires are formed on the second surface. A maximum distance H1between two adjacent first wires in the first division is greater than a maximum distance H2between two adjacent first wires in the second division.

The multiple first wires are formed on the second surface of the substrate provided in step S100. The maximum distance between two adjacent first wires in the first division is H1, and the maximum distance between two adjacent first wires in the second division is H2. H1is greater than H2. In this way, an area of the patterned dry film formed by adjacent first wires in the first division on the second surface is increased, to reduce a risk of detachment of the patterned dry film during removal of a supporting film, to improve a yield of products.

In some embodiments, the first wires are formed on the second surface by performing the following steps S110and S210.

In step S110, a first mask layer is formed in a first wiring region on the second surface of the substrate.

The first wiring region on the second surface of the substrate is coated with a photoresist layer to form the first mask layer.

In step S210, the first mask layer is etched to form multiple first hollows in the first mask layer. The multiple first hollows are arranged along a first direction and extend along a second direction. The second direction intersects with the first direction. There is a first interval or a second interval between adjacent first hollows in the first division. The first interval alternates with the second interval in the first direction. The first intervals each taper along the second direction, and the second intervals each taper against the second direction. The first wires are formed among the first hollows.

Steps such as exposure and development are performed on the first mask layer formed in step S110to form the multiple first hollows, and there is the first interval or the second interval between adjacent first hollows in the first division. The first interval alternates with the second interval in the first direction. The first intervals each taper along the second direction, and the second intervals each taper against the second direction. The first hollows correspond to the first wires.

With the method for manufacturing a display panel, the first hollows and the second hollows are formed by performing photolithography on the dry film made of photoresist. Then, the dry film is peeled off the rigid substrate, and is attached to the side surfaces and the second surface of the display panel through3D adhesion. A metal film is applied and then is peeled off. In this way, the first wires and the second wires are formed, and drive wires on the first surface of the substrate of the display panel extend to the second surface. The dry film is covered with a supporting film. In the manufactured display panel, an area of the dry film formed by the first interval and the second interval between adjacent first hollows in the first division is greater than an area of the dry film formed between adjacent first hollows in the second division, and a risk of detachment of the patterned dry film attached to the second surface of the substrate of the display panel during removal of the supporting film is reduced, to improve a product yield.

In some embodiments, the first wires are formed on the second surface by performing the following steps S120and S220.

In step S120, a first mask layer is formed in the first wiring region on the second surface of the substrate.

The first wiring region on the second surface of the substrate is coated with a photoresist layer to form the first mask layer.

In step S220, the first mask layer is etched to form multiple first hollows in the first mask layer. A distance between ends of the adjacent first hollows in the first division is H1, and a distance between ends of the adjacent first hollows in the second division is H3. H3is less than H1. The first wires are formed among the first hollows.

Steps such as exposure and development are performed on the first mask layer formed in step S110to form the multiple first hollows. A distance between ends of the adjacent first hollows in the first division is H1, and a distance between ends of the adjacent first hollows in the second division is H3. H3is less than H1. The first hollows correspond to the first wires.

In the display panel manufactured with the method described above, an area of the dry film formed between adjacent first hollows in the first division is greater than an area of the dry film formed between adjacent first hollows in the second division to enhance the adhesion of the patterned dry film in the first division, and the patterned dry film in the first division is not prone to be damaged during removal of the supporting film.

In some embodiments, the display panel has side surfaces connecting the first surface and the second surface, and at least one of the side surfaces includes a second wiring region. The second wiring region includes a third division and a fourth division that are arranged along the first direction. The second wires are formed on the side surface by performing the following steps S300and S400.

In step S300, a second mask layer is formed in the second wiring region.

The second wiring region on the side surface of the substrate is coated with a photoresist layer to form the second mask layer.

In step S400, the second mask layer is etched to form multiple second hollows arranged along the first direction in the second mask layer. A maximum distance between any two adjacent second hollows in the third division is H4, and a maximum distance between any two adjacent second hollows in the fourth division is H5. H4is greater than or equal to H5. The second wires are formed among the second hollows.

Steps such as exposure and development are performed on the second mask layer formed in step S300to form the multiple second hollows, and the second hollows are arranged along the first direction. A maximum distance between any two adjacent second hollows in the third division is H4, a maximum distance between any two adjacent second hollows in the fourth division is H5, and H4is greater than or equal to H5. The second wires are formed among the second hollows.

In the above embodiment, the first mask layer and the second mask layer each are a dry film, and the region after removal of the dry films includes regions between adjacent first wires and regions between adjacent second wires.

In the display panel manufactured with the method described above, on a premise that the area of the dry film formed between adjacent first hollows in the first division is greater than the area of the dry film formed between adjacent first hollows in the second division, an area of the dry film formed between adjacent second hollows in the third division is greater than or equal to an area of the dry film formed between adjacent first hollows in the fourth division, further reducing the risk of detachment of the patterned dry film on the side surface during removal of the supporting film.

A display screen is further provided according to an embodiment of the present disclosure. The display screen includes the display panel described above, or a display panel manufactured with the method described above.

A display device is further provided according to an embodiment of the present disclosure. The display device includes the display screen described above.

A tiled display apparatus is further provided according to an embodiment of the present disclosure. The tiled display apparatus includes multiple of the display device described above.

It should be noted that the terms “comprise”, “include”, or any other variants thereof are intended to encompass a non-exclusive inclusion, and a process, method, article, or device including a series of elements includes not only those elements but also elements that are not explicitly listed, or elements that are inherent to such process, method, article, or device. Unless expressively limited otherwise, the statement “comprising (including) a . . . ” does not exclude the case that other identical elements exist in the process, method, product or device.

The embodiments of the present disclosure are described above and the embodiments are not intended to limit the present disclosure. Various modifications and variations to the present disclosure. Any modifications, equivalent substitutions, improvements and the like made within the spirit and the principle of the present disclosure fall within the scope of the claims of the present disclosure.