CN117915712A - Transparent display panel and transparent spliced display device - Google Patents

Abstract

The application relates to a transparent display panel and a transparent spliced display device. The transparent display panel comprises a transparent substrate, a plurality of light-emitting units and a first metal layer, wherein the light-emitting units are arranged on one side of the transparent substrate, the light-emitting units are equidistantly arranged in rows along a first direction, and the light-emitting units are arranged in columns along a second direction. The first metal layer comprises a plurality of first conductive lines which are arranged at intervals along the first direction and extend along the second direction, and each light emitting unit is positioned between two adjacent first conductive lines and is electrically connected with the two adjacent first conductive lines respectively. At least one of the two first conductive lines positioned at the edge of the transparent substrate in the first direction is a single first metal line, the rest of the first conductive lines are metal grids formed by a plurality of second metal lines, and the line width of the first metal lines is smaller than the width of the metal grids in the first direction.

Description

Transparent display panel and transparent spliced display device

Technical Field

The invention relates to the technical field of display, in particular to a transparent display panel and a transparent spliced display device.

Background

In the display field, the transparency of the display panel is improved by the design of the elements, the arrangement of the wirings, the composition of the base material, and the like, so that the development of transparent display technology is also mature. The transparent display panel has the characteristics of transparency, thinness and the like, can improve man-machine interaction, and enables information transmission to be presented in a more visual mode. For example, common transparent display devices are LED transparent screens, OLED transparent screens, and the like.

In places such as stations and markets where transparent display devices are applied, there is a high demand for large-sized transparent display devices, and the large-sized transparent display devices at present need to be spliced by a plurality of small-sized display panels, but the large-sized transparent display devices obtained by splicing often have the problem of poor display effect.

Disclosure of Invention

Accordingly, it is necessary to provide a transparent display panel and a transparent tiled display device to improve the display effect of the transparent tiled display device.

An embodiment of a first aspect of the present application provides a transparent display panel. The transparent display panel comprises a transparent substrate, a plurality of light emitting units and a first metal layer. The light emitting units are arranged on one side of the transparent substrate, are equidistantly arranged in rows along a first direction and are arranged in columns along a second direction, and the first direction and the second direction are intersected; the first metal layer is arranged between the light emitting units and the transparent substrate, and comprises a plurality of first conductive circuits which are arranged at intervals along the first direction and extend along the second direction, and each light emitting unit is positioned between two adjacent first conductive circuits and is electrically connected with the two adjacent first conductive circuits respectively; at least one of the two first conductive lines positioned at the edge of the transparent substrate in the first direction is a single first metal line, the rest of the first conductive lines are metal grids formed by a plurality of second metal lines, and the line width of the first metal lines is smaller than the width of the metal grids in the first direction.

In some embodiments, two of the first conductive lines located at the edge of the transparent substrate in the first direction are each a single first metal line, and the remaining plurality of first conductive lines are each the metal mesh composed of a plurality of second metal lines.

In some embodiments, the widths of the plurality of metal grids in the first direction are the same along the first direction.

In some embodiments, the lengths of the plurality of metal grids are all the same along the second direction.

In some embodiments, the metal mesh comprises a plurality of mesh openings, the shape of the mesh openings comprising diamond shapes, square shapes, rectangular shapes.

In some embodiments, the light emitting unit includes a light emitting body, and first and second pads connected with the light emitting body;

One of two adjacent first conductive lines connected with one row of the light emitting units is connected with the first bonding pad so as to provide a first power supply signal for the light emitting body, and the other one is connected with the second bonding pad so as to provide a second power supply signal for the light emitting body.

In some embodiments, the width of the metal mesh in the first direction is equal to or less than 0.8 times the width of the light emitting cells in the first direction, and the line width of the first metal line is equal to or less than 0.3 times the width of the light emitting cells in the first direction.

In some embodiments, the transparent display panel further includes a second metal layer disposed on a side of the transparent substrate facing away from the first metal layer, the second metal layer includes a plurality of second conductive traces disposed opposite to each of the first conductive traces along a thickness direction of the transparent substrate, and the first conductive traces are electrically connected to the corresponding second conductive traces through vias.

In some embodiments, the projection of the second conductive trace onto the transparent substrate coincides with the projection of the first conductive trace onto the transparent substrate.

In some embodiments, the transparent display panel further includes a third metal layer disposed on a side of the transparent substrate facing away from the first metal layer, the third metal layer includes two third conductive traces, projections of the two first conductive traces located at edges of the transparent substrate in the first direction on the transparent substrate overlap projections of the two third conductive traces on the transparent substrate, and the third conductive traces are electrically connected to the corresponding first conductive traces through vias.

An embodiment of the second aspect of the present application provides a transparent tiled display device, including at least two transparent display panels according to the first aspect, where at least two transparent display panels are tiled along the first direction. In the application, at least one of two first conductive lines positioned at the edge of the transparent substrate in the first direction is set as a single first metal line, and the rest of the first conductive lines are set as a metal grid formed by a plurality of second metal lines. And the line width of the first metal line is smaller than the width of the metal mesh in the first direction. Like this, a plurality of transparent display panels splice the back along first direction, and the interval between two adjacent light emitting units of concatenation department and the interval of two adjacent light emitting units in the transparent display panel can tend to agree, can reach the same effect of interval between two adjacent light emitting units of concatenation department and the interval of two adjacent light emitting units in the transparent display panel even, and then be favorable to improving transparent splice display device's display effect.

Drawings

Fig. 1 is a schematic structural diagram of a transparent tiled display device in the related art;

FIG. 2 is a schematic diagram of one structure of a transparent display panel according to an embodiment of the application;

FIG. 3 is a schematic diagram of another structure of a transparent display panel according to an embodiment of the application;

FIG. 4 is a schematic structural diagram of a transparent tiled display device formed by stitching a plurality of transparent display panels shown in FIG. 2;

FIG. 5 is a schematic structural diagram of a transparent tiled display device formed by stitching the plurality of transparent display panels shown in FIG. 3;

fig. 6 is a schematic diagram of a connection structure between a light emitting unit located at an edge of a transparent substrate in a first direction and a first metal wire and a metal grid according to an embodiment of the present application;

FIG. 7 is a schematic view of a cross-section along H-H in FIG. 6;

FIG. 8 is a schematic view of another cross-sectional structure along H-H in FIG. 6;

fig. 9 is a schematic view of a further cross-sectional structure along H-H in fig. 6.

The reference numerals are as follows:

1-a transparent tiled display device; 2-a transparent display panel;

10-a transparent substrate; 11-conductive lines;

12-a light emitting unit; 1000-transparent tiled display device;

100-a transparent display panel; 110-a transparent substrate;

120-a light emitting unit; 130-a first metal layer;

131-a first conductive trace; 1311-a first metal line;

1312-a second metal line; 131 a-metal mesh;

1313-mesh; 121-a light-emitting body;

122-a first pad; 123-second bonding pads;

124-third bond pads; 125-fourth bond pads;

140-a second metal layer; 141-a second conductive line;

150-a third metal layer; 151-a third conductive trace;

160-vias.

Detailed Description

In order that the above objects, features and advantages of the invention will be readily understood, a more particular description of the invention will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the invention, whereby the invention is not limited to the specific embodiments disclosed below.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present invention, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.

In the display field, the transparency of the display panel is improved by the design of the elements, the arrangement of the wirings, the composition of the base material, and the like, so that the development of transparent display technology is also mature. The transparent display panel has the characteristics of transparency, thinness and the like, can improve man-machine interaction, and enables information transmission to be presented in a more visual mode. For example, common transparent display devices are LED transparent screens, OLED transparent screens, and the like.

When the transparent display device is applied to large-scale fields such as a large-scale stand board of a station, a display window of a mall, etc., a large-area screen is often required for content display. But are limited by the raw materials and process steps of the display screen, it is generally difficult to directly manufacture a large-sized transparent display screen.

Taking a light emitting diode (LIGHT EMITTING diode) transparent display screen as an example, the LED transparent display screen comprises a substrate and LED light emitting sources arranged on the substrate, and cannot directly manufacture a large-size LED transparent display screen under the influence of factors such as substrate manufacturing process, surface mount technology (Surface Mounted Technology, SMT), driving and the like, and a plurality of small display panels are required to be spliced to meet the requirement of a large field.

Fig. 1 is a schematic structural diagram of a transparent tiled display device 1 in the related art. The transparent tiled display device 1 comprises at least two transparent display panels 2. Each transparent display panel 2 includes a transparent substrate 10, a plurality of conductive traces 11 disposed on the transparent substrate 10, and a plurality of light emitting units 12 electrically connected to the conductive traces 11. The plurality of conductive traces 11 are arranged at intervals along the first direction X and extend along the second direction Y, and the plurality of light emitting units 12 are arranged in rows at equal intervals along the first direction X and are arranged in columns along the second direction Y. In order to improve the transmittance of the transparent display panel 2, the plurality of conductive traces 11 are all metal grids.

The transparent tiled display device 1 has the following problems: the distance between two adjacent light emitting units 12 at the splice is greater than the distance between two adjacent light emitting units 12 in each transparent display panel 2 along the first direction X, thereby affecting the display effect after splice. The following will explain specific data.

As shown in fig. 1, in the same transparent display panel 2, it is assumed that the pitch a of two adjacent light emitting units 12 is 5mm. The model of the light emitting unit 12 is selected as, for example, package 1515, and the width b of the light emitting unit 12 in the first direction X is 1.5mm. In order to ensure that the width of the metal grid of the conductive track 11 in the first direction X meets the current requirements of the light emitting unit 12, its width is typically 0.8 times the width of the light emitting unit 12 in the first direction X. I.e. the width c of the metal mesh of the conductive trace 11 in the first direction X is 1.5X 0.8=1.2 mm. Due to the limitation of the dicing accuracy, the dicing distance d between the conductive traces 11 located at the edge of the transparent substrate 10 in the first direction X and the edge of the transparent substrate 10 is about 1mm. Due to the limitation of the splicing process, a splicing interval e of about 0.5mm exists between the transparent substrates 10 of two adjacent transparent display panels 2. Thus, the spacing between two adjacent light emitting units 12 at the splice is about: b/2+c+d+e+c+b/2=6.4 mm (ignoring the connection distance of the conductive line 11 to the light emitting unit 12).

It can be seen that, along the first direction X, the distance between two adjacent light emitting units 12 at the splice is 6.4mm, and the distance between two adjacent light emitting units 12 in each transparent display panel 2 is 5mm, which are different. In addition, due to the limitation of the splicing process and the limitation of the cutting precision, the splicing interval e and the cutting interval e always exist, so that the distance values of the splicing interval e and the cutting interval e cannot be adjusted to be consistent. Furthermore, when the distance between two adjacent light emitting units 12 in each transparent display panel 2 is smaller, the difference between the distance between two adjacent light emitting units 12 at the splice and the distance between two adjacent light emitting units 12 in the transparent display panel 2 is larger. In this way, the transparent tiled display device 1 is made to have a poor display effect at the tiled location.

Based on the above, the embodiment of the application provides a transparent display panel and a transparent spliced display device, so as to improve the display effect of the transparent spliced display device.

An embodiment of the first aspect of the present application proposes a transparent display panel 100. As shown in fig. 2 and 7, the transparent display panel 100 includes a transparent substrate 110, a plurality of light emitting cells 120, and a first metal layer 130. The light emitting units 120 are disposed on one side of the transparent substrate 110, and the light emitting units 120 are arranged in rows along a first direction X at equal intervals and are arranged in columns along a second direction Y, wherein the first direction X and the second direction Y intersect. The first metal layer 130 is disposed between the light emitting units 120 and the transparent substrate 110, and the first metal layer 130 includes a plurality of first conductive traces 131 disposed at intervals along the first direction X and extending along the second direction Y, and each light emitting unit 120 is disposed between two adjacent first conductive traces 131 and electrically connected to the two adjacent first conductive traces 131 respectively. At least one of the two first conductive traces 131 located at the edge of the transparent substrate 110 in the first direction X is a single first metal line 1311, and the remaining plurality of first conductive traces 131 are metal grids 131a formed by a plurality of second metal lines 1312.

In the present application, the transparent substrate 110 is a base material of the transparent display panel 100, and can be used to support the first metal layer 130 and the light emitting unit 120. In some embodiments, the transparent substrate 110 may be glass, transparent polyimide (CPI, colorless Polyimide), or polyethylene terephthalate (PET), or the like.

The plurality of light emitting units 120 may emit light of a plurality of different colors. Specifically, the light emitting unit 120 may be a conventional Light Emitting Diode (LED), a sub-millimeter light emitting diode (Mini LED), a Micro light emitting diode (Micro LED), or the like. Preferably, the light emitting unit 120 may be ICLED of a built-in driving chip. Further, the plurality of light emitting units 120 may include red, green, and blue light emitting diodes to emit three primary colors (R, G, B) of light, such that the three color light emitting units 120 constitute one pixel unit, enabling the transparent display panel 100 to display a full-color image. The plurality of light emitting units 120 are arranged in rows at equal intervals along the first direction X and in columns along the second direction Y. That is, the plurality of light emitting units 120 are arranged in an array, and the intervals between two adjacent light emitting units 120 are equal along the first direction X.

The first metal layer 130 is used to provide a display circuit for the light emitting unit 120. The material of the first metal layer 130 may be selected from Indium Tin Oxide (ITO), indium Zinc Oxide (IZO), tin oxide (SnOx), zinc oxide (ZnOx), indium Zinc Tin Oxide (IZTO), silver (Ag), copper (Cu), carbon nanotubes, graphene, or conductive polymers.

As shown in fig. 2, the first metal layer 130 includes a plurality of first conductive traces 131 spaced apart along the first direction X and extending along the second direction Y. Each light emitting unit 120 is located between two adjacent first conductive traces 131 and is electrically connected to two adjacent first conductive traces 131, respectively. In this way, adjacent two first conductive traces 131 may provide voltage signals to the light emitting cells 120 of one column.

Further, at least one of the two first conductive traces 131 located at the edge of the transparent substrate 110 in the first direction X is a single first metal line 1311, the remaining plurality of first conductive traces 131 are metal grids 131a formed by a plurality of second metal lines 1312, and the line width of the first metal line 1311 is smaller than the width of the metal grids 131a in the first direction X. That is, as shown in fig. 2, one of the first conductive traces 131 located at the edge of the transparent substrate 110 in the first direction X is a single first metal line 1311, and the remaining first conductive traces 131 are metal grids 131a formed by a plurality of second metal lines 1312. Or as shown in fig. 3, two first conductive lines 131 located at the edge of the transparent substrate 110 in the first direction X are each a single first metal line 1311, and the remaining plurality of first conductive lines 131 are each a metal mesh 131a formed by a plurality of second metal lines 1312. In this way, when the plurality of transparent display panels 100 of the present application are spliced in the first direction X, the interval between the adjacent two light emitting units 120 at the splice can be reduced. The following will still be described by specific data.

As shown in fig. 4, assuming that, in each transparent display panel 100, the distance a between two adjacent light emitting units 120 is 5mm, and the model of the light emitting unit 120 is selected as, for example, package 1515, the width B of the light emitting unit 120 in the first direction X is 1.5mm. The first metal line 1311 maintains a cutting distance D of 1mm from the edge of the transparent substrate 110 due to the limitation of cutting accuracy. Due to the limitation of the splicing process, the splicing interval E between the transparent substrates 110 of the adjacent two transparent display panels 100 is 0.5mm. As described in the related art shown in fig. 1, the width of the metal mesh 131a in the first direction X is 0.8 times the width of the light emitting unit 120 in the first direction X, that is, the width C thereof is 1.5×0.8=1.2 mm. Since the line width f of the first metal line 1311 is smaller than the width of the metal mesh 131a in the first direction X, the line width f of the first metal line 1311 is smaller than 1.2mm. Let f=0.4 mm, which is one third of the line width f of the first metal line 1311, be the metal mesh 131 a.

As shown in fig. 2 and fig. 4, when one of the first conductive traces 131 located at the edge of the transparent substrate 110 in the first direction X is a single first metal line 1311, the remaining first conductive traces 131 are metal grids 131a formed by a plurality of second metal lines 1312, and the distance between two adjacent light emitting units 120 at the joint is about: b/2+f+d+e+d+c+b/2=5.6 mm.

As shown in fig. 3 and 5, when two first conductive traces 131 located at the edge of the transparent substrate 110 in the first direction X are each a single first metal line 1311, and the remaining first conductive traces 131 are each a metal mesh 131a formed by a plurality of second metal lines 1312, the space between two adjacent light emitting units 120 at the splice is: b/2+f+d+e+d+f+b/2=4.8 mm.

In either case, the distance between two adjacent light emitting units 120 at the splice is significantly reduced in comparison with the related art (6.4 mm) along the first direction X, and is closer to the distance between two adjacent light emitting units 120 in the transparent display panel 100 by 5mm.

Therefore, if the line width f of the first metal line 1311 is selected to be a suitable value, the space between two adjacent light emitting units 120 at the joint may be the same as the space between two adjacent light emitting units 120 in the transparent display panel 100; or the interval between the adjacent two light emitting units 120 at the splice may be smaller than the interval between the adjacent two light emitting units 120 in the transparent display panel 100. When the distance between two adjacent light emitting units 120 at the splice is smaller than the distance between two adjacent light emitting units 120 in the transparent display panel 100, the distance between two adjacent light emitting units 120 at the splice and the distance between two adjacent light emitting units 120 in the transparent display panel 100 can be adjusted to be the same by increasing the cutting distance D, increasing the splice distance E, and the like.

Thus, in the present application, at least one of the two first conductive traces 131 located at the edge of the transparent substrate 110 in the first direction X is provided as a single first metal line 1311, and the remaining plurality of first conductive traces 131 are provided as a metal mesh 131a composed of a plurality of second metal lines 1312. And, the line width of the first metal line 1311 is smaller than the width of the metal mesh 131a in the first direction X. In this way, after the plurality of transparent display panels 100 are spliced along the first direction X, the distance between the two adjacent light emitting units 120 at the splice location and the distance between the two adjacent light emitting units 120 in the transparent display panel 100 may tend to be consistent, and even the same effect as the distance between the two adjacent light emitting units 120 at the splice location and the distance between the two adjacent light emitting units 120 in the transparent display panel 100 may be achieved, thereby being beneficial to improving the display effect of the transparent spliced display device 1000.

In some embodiments, as shown in fig. 3 and 5, two first conductive traces 131 located at the edge of the transparent substrate 110 in the first direction X are each a single first metal line 1311, and the remaining plurality of first conductive traces 131 are each a metal grid 131a formed by a plurality of second metal lines 1312. In this way, when the transparent display panel 100 of the present embodiment is spliced along the first direction X, it is advantageous to further make the pitch between the adjacent two light emitting units 120 at the splice and the pitch between the adjacent two light emitting units 120 in the transparent display panel 100 tend to be uniform. In this way, the display effect of the transparent tiled display device 1000 is advantageously improved.

In some embodiments, the widths C of the plurality of metal grids 131a in the first direction X are the same along the first direction X as shown in fig. 2 and 3. Thus, the convenience of manufacturing the metal mesh 131a is advantageously improved.

In some embodiments, as shown in fig. 2 and 3, the lengths of the plurality of metal grids 131a are the same along the second direction Y. Thus, the convenience of manufacturing the metal mesh 131a is advantageously improved.

Optionally, the metal mesh 131a includes a plurality of mesh holes 1313, and the shape of the mesh holes 1313 includes diamond, square, rectangle.

In some embodiments, as shown in fig. 6, the light emitting unit 120 includes a light emitting body 121, and first and second pads 122 and 123 connected to the light emitting body 121. One of the adjacent two first conductive traces 131 connected to one row of the light emitting cells 120 is connected to the first pad 122 to provide the first power signal to the light emitting body 121. The other is connected to the second pad 123 to supply a second power signal to the light emitting body 121. The first pad 122 may be a positive pin and the second pad 123 may be a negative pin.

The present embodiment proposes a specific structure of the light emitting unit 120. The light emitting unit 120 is connected to adjacent two first conductive traces 131 through the first and second pads 122 and 123. In this way, the light emitting unit 120 emits light under the driving of the adjacent two first conductive traces 131. It is easily understood that the light emitting unit 120 has other pads as well. For example, as shown in fig. 6, when the light emitting unit 120 is a four pin ICLED, the light emitting unit 120 further includes a third pad 124 and a fourth pad 125 connected to the light emitting body 121. The third pad 124 may be a drive signal input pin and the fourth pad 125 may be a drive signal output pin. Of course, the light emitting unit 120 may also be a six-pin ICLED, and the specific structure is the prior art, which is not described herein.

In the present application, the width of the light emitting unit 120 in the first direction X refers to the width of the light emitting body 121 in the first direction X. In calculating the interval between the adjacent light emitting units 120, since there is a pad connection distance between the light emitting body 121 and the first conductive line 131, the distance is negligible.

In some embodiments, the width of the metal mesh 131a in the first direction X is less than or equal to 0.8 times the width of the light emitting unit 120 in the first direction X, and the line width of the first metal line 1311 is less than or equal to 0.3 times the width of the light emitting unit 120 in the first direction X.

The present embodiment defines the width of the metal mesh 131a in the first direction X and the line width of the first metal line 1311. The width of the metal mesh 131a in the first direction X is set to be 0.8 times or less the width of the light emitting unit 120 in the first direction X. In this way, on one hand, the metal mesh 131a can meet the current requirement of driving the light emitting unit 120, and on the other hand, the width of the metal mesh 131a in the first direction X is not too wide, so that the arrangement density of the light emitting unit 120 is advantageously improved, and the display effect is further improved.

The line width of the first metal line 1311 is set to 0.3 times or less the width of the light emitting unit 120 in the first direction X. In this way, the distance between two adjacent light emitting units 120 at the joint in the first direction X is as small as possible, and the distance between two adjacent light emitting units 120 at the joint and the distance between two adjacent light emitting units 120 in the transparent display panel 100 can be adjusted to be the same by increasing the joint distance E and the cutting distance D, so as to improve the display effect of the transparent joint display device 1000.

In some embodiments, as shown in fig. 8 and referring to fig. 2, the transparent display panel 100 further includes a second metal layer 140 disposed on a side of the transparent substrate 110 facing away from the first metal layer 130. The second metal layer 140 includes a plurality of second conductive traces 141 disposed opposite to each of the first conductive traces 131 in a thickness direction of the transparent substrate 110, and the first conductive traces 131 are electrically connected to the corresponding second conductive traces 141 through the vias 160.

In this embodiment, the transparent display panel 100 further includes a second metal layer 140. Along the thickness direction of the transparent substrate 110, each second conductive trace 141 of the second metal layer 140 is disposed opposite to each first conductive trace 131. That is, the number of the second conductive traces 141 is the same as the number of the first conductive traces 131, and the second conductive traces 141 are connected in one-to-one correspondence with the first conductive traces 131. In this way, in the first aspect, the first conductive line 131 of the metal mesh 131a increases the specific surface area thereof by connecting the second conductive line 141, so that the line width of the second metal line 1312 may be set smaller, which is advantageous for further improving the transmittance of the transparent display panel 100. In the second aspect, at least one of the two first conductive traces 131 located at the edge of the transparent substrate 110 in the first direction X is a single first metal line 1311, and the single first metal line 1311 is relatively high in resistance. By connecting the first conductive trace 131 of the first metal line 1131 structure to the corresponding second conductive trace 141, the specific surface area thereof is increased so that the resistance thereof is reduced. In this way, it is advantageous to ensure the normal operation of the light emitting unit 120 connected to the first conductive line 131 of the first metal wire 1311 structure.

In some embodiments, as shown in fig. 8, the projection of the second conductive trace 141 onto the transparent substrate 110 coincides with the projection of the first conductive trace 131 onto the transparent substrate 110. That is, the shape and size of each second conductive trace 141 are the same as the shape and size of the corresponding first conductive trace 131. For example, if the first conductive line 131 is a first metal line 1311, the second conductive line 141 corresponding to the first conductive line 131 is also a metal line, and has the same size and shape as the first metal line 1311. If the first conductive trace 131 is a metal mesh 131a composed of a plurality of second metal lines 1312, the second conductive trace 141 corresponding to the first conductive trace 131 is also a mesh structure, and the size and shape of the second conductive trace are the same as those of the metal mesh 131 a. Thus, the convenience of manufacturing the second metal layer 140 is advantageously improved.

In some embodiments, as shown in fig. 9 and referring to fig. 2 or 3, the transparent display panel 100 further includes a third metal layer 150 disposed on a side of the transparent substrate 110 facing away from the first metal layer 130, the third metal layer 150 includes two third conductive traces 151, and projections of the two first conductive traces 131 located at edges of the transparent substrate 110 in the first direction X on the transparent substrate 110 overlap with projections of the two third conductive traces 151 on the transparent substrate 110, and the third conductive traces 151 are electrically connected to the corresponding first conductive traces 131 through vias 160.

In this embodiment, the transparent display panel 100 includes the third metal layer 150, and the third metal layer 150 includes only two third conductive traces 151. Further, the projections of the two first conductive traces 131 on the transparent substrate 110 at the edge of the transparent substrate 110 in the first direction X coincide with the projections of the two third conductive traces 151 on the transparent substrate 110. That is, two third conductive traces 151 are also located at two edges of the transparent substrate 110 in the first direction X, and each third conductive trace 151 has the same shape and size as the corresponding first conductive trace 131. In other words, in the present embodiment, the third conductive traces 151 are disposed only under the two first conductive traces 131 located at the edge of the transparent substrate 110 in the first direction X. In this way, on the one hand, the manufacturing difficulty of the third metal layer 150 can be reduced. In the second aspect, since at least one of the two first conductive traces 131 located at the edge of the transparent substrate 110 in the first direction X is one first metal line 1311, the first metal line 1311 has a larger resistance. By connecting the first conductive trace 131 of the first metal line 1131 structure to the corresponding third conductive trace 151, the specific surface area thereof is increased so that the resistance thereof is reduced. In this way, it is advantageous to ensure the normal operation of the light emitting unit 120 connected to the first conductive line 131 of the first metal wire 1311 structure.

An embodiment of the second aspect of the present application proposes a transparent tiled display device 1000. As shown in fig. 4 or fig. 5, the transparent tiled display device 1000 includes at least two transparent display panels 100 according to the first aspect, and at least two transparent display panels 100 are tiled along the first direction X.

In the transparent tiled display device 1000 of the present application, at least one of the two first conductive traces 131 located at the edge of the transparent substrate 110 in the first direction X is set as a single first metal line 1311, and the remaining plurality of first conductive traces 131 are set as a metal mesh 131a composed of a plurality of second metal lines 1312. And, the line width of the first metal line 1311 is smaller than the width of the metal mesh 131a in the first direction X. In this way, after the plurality of transparent display panels 100 are spliced along the first direction X, the distance between the two adjacent light emitting units 120 at the splice location and the distance between the two adjacent light emitting units 120 in the transparent display panel 100 may tend to be consistent, and even the same effect as the distance between the two adjacent light emitting units 120 at the splice location and the distance between the two adjacent light emitting units 120 in the transparent display panel 100 may be achieved, thereby being beneficial to improving the display effect of the transparent spliced display device 1000.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples illustrate only a few embodiments of the invention, which are described in detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.

Claims (10)

1. A transparent display panel, comprising:

A transparent substrate;

The light-emitting units are arranged on one side of the transparent substrate, are equidistantly arranged in rows along a first direction and are arranged in columns along a second direction, and the first direction and the second direction are intersected;

The first metal layer is arranged between the light emitting units and the transparent substrate, and comprises a plurality of first conductive circuits which are arranged at intervals along the first direction and extend along the second direction, and each light emitting unit is positioned between two adjacent first conductive circuits and is electrically connected with the two adjacent first conductive circuits respectively;

At least one of the two first conductive lines positioned at the edge of the transparent substrate in the first direction is a single first metal line, the rest of the first conductive lines are metal grids formed by a plurality of second metal lines, and the line width of the first metal lines is smaller than the width of the metal grids in the first direction.

2. The transparent display panel according to claim 1, wherein two of the first conductive lines located at an edge of the transparent substrate in the first direction are each a single one of the first metal lines, and the remaining plurality of the first conductive lines are each the metal mesh composed of a plurality of the second metal lines.

3. The transparent display panel according to claim 2, wherein a plurality of the metal grids have the same width in the first direction along the first direction;

and/or, along the second direction, the lengths of a plurality of metal grids are the same.

4. The transparent display panel according to claim 1, wherein the metal mesh comprises a plurality of mesh openings, and the shape of the mesh openings comprises diamond, square, rectangle.

5. The transparent display panel according to claim 1, wherein the light emitting unit includes a light emitting body and first and second pads connected to the light emitting body;

One of two adjacent first conductive lines connected with one row of the light emitting units is connected with the first bonding pad so as to provide a first power supply signal for the light emitting body, and the other one is connected with the second bonding pad so as to provide a second power supply signal for the light emitting body.

6. The transparent display panel according to claim 1, wherein a width of the metal mesh in the first direction is 0.8 times or less a width of the light emitting unit in the first direction, and a line width of the first metal line is 0.3 times or less a width of the light emitting unit in the first direction.

7. The transparent display panel according to claim 1, further comprising a second metal layer disposed on a side of the transparent substrate facing away from the first metal layer, wherein the second metal layer comprises a plurality of second conductive traces disposed opposite each of the first conductive traces in a thickness direction of the transparent substrate, and the first conductive traces are electrically connected to the corresponding second conductive traces through vias.

8. The transparent display panel according to claim 7, wherein a projection of the second conductive trace onto the transparent substrate coincides with a projection of the first conductive trace onto the transparent substrate.

9. The transparent display panel according to claim 1, further comprising a third metal layer disposed on a side of the transparent substrate facing away from the first metal layer, the third metal layer comprising two third conductive traces, projections of the two first conductive traces on the transparent substrate at edges of the transparent substrate in the first direction coinciding with projections of the two third conductive traces on the transparent substrate, the third conductive traces being electrically connected to the corresponding first conductive traces through vias.

10. A transparent tiled display device, characterized in that it comprises at least two transparent display panels according to any of claims 1-9, at least two of said transparent display panels being tiled along said first direction.